Servo-valve pilot stage and a two-stage including such a stage2
施耐德电气 Logix 520MD 系列数字定位器 FCD LGENTB0520-01 09 09
TECHNICAL BULLETIN Logix 520MD SeriesDigital PositionerFCD LGENTB0520-01 09/09IntroductionThe Logix 520MD Series combines superior positioning and tuning functions with convenient setup and powerful, easy to use diagnostic tools unlike other positioners that have only one gain. The Logix 520MD positioner uses a multi-variable variable gain tuning algorithm. This allows the positioner to make large step changes with minimal overshoot, while achieving the resolution to respond to very small step changes.The Auto-tune procedure cycles the actuator to produce a measured response and selects gain values that provide appropriate actuator performance. The Auto-tune function includes a gain modifier selector that can be used to increase or decrease the calculated gain in order to achieve optimal performance. By setting the Auto-tune on/off DIP switch, the tuning mode can be changed from auto to manual. The Logix 520MD Series positioners provide several preset gain settings with a locally adjustable gain set selector directly from the user interface on the positioner. If custom settings are desired, tuning sets can be modified with a handheld or with ValveSight™ software, to accommodate a wide range of actuator sizes and types.The 520MD, 521MD and 522MD models• Three versions:BasicAdvanced (Advanced includes pressure sensors)Pro (Pro includes pressure sensors and full featured valve diagnostics)• HART Command 1, 3, 9, 33 & 48• Burst Mode available for continuous data transmission• Position command with analog 4-20 mA loop current• Final value of command after characterization• Supply pressure (Advanced +Pro)• Stem position in percent• Onboard temperature sensor to measure local positioner ambient temperature• Stroke speed limiter (configurable through HART or ValveSight™)• Step test, friction test, HRL, data logger• DTM Available2Features and Benefits3Principle of OperationThe Logix 520MD positioner is a digital positioner with various options. The positioner consists of three main modules:1. The microprocessor based electronic control module includes direct local user interface switches2. The piezo valve based electro-pneumatic converter module3. The infinite resolution valve position sensor.The basic positioner operation is best understood by referring to Figure 1. The complete control circuit is powered by the two-wire, 4-20 mA command signal. The analog 4-20 mA command is passed to the microprocessor, where it is compared to the measured valve stem position. The control algorithm in the processor performs control calculations and produces an output command to the piezo valve, which drives the pneumatic amplifier. The position of the pilot valve in the pneumatic amplifier is measured and relayed to the inner loop control circuit. This two-stage control pro-vides for more responsive and tighter control than is possible with a single stage control algorithm.The pneumatic amplifier controls the airflow to the actuator. The change of pressure and volume of the air in the actua-tor causes the valve to stroke. As the valve approaches the desired position, the difference between the commanded position and the measured position becomes smaller and the output to the piezo is decreased. This, in turn, causes the pilot valve to close and the resulting flow to decrease, which slows the actuator movement as it approaches the new commanded position. When the valve actuator is at the desired position, the pneumatic amplifier output is held at zero, which holds the valve in a constant position.Figure 1: Logix 520MD Principle of Operation45The Logix 520MD for HART ApplicationsComplete local configuration• Local status and alert messages • T uning (Auto-tune function and manual adjustment)• Jog buttons to manually adjust 100% position • Easy-to-install 4-20 mA analog feedback card optionFigure 3: Logix 520MD SeriesFigure 2: ValveSight ™ Dashboard for Logix 522MDAdvanced DTM and Pro diagnostics6ValveSight™ FDT/DTM TechnologyFlowserve’s ValveSight™ DTM software helps manage field devices by combining the features of field network hardware and the Hart 500MD communication protocols using FDT/DTM technology with the Logix 500MD series positioners. ValveSight™ is a complete software package, featuring a unique and easy to understand health status of the device that shows not only problems, but also the magnitude of developing problems.ValveSight™ also has configuration and calibration screens to fully support the Logix 500MD positioner family. Addition-ally, the user can access customized reports for all configuration, calibration and event data. Flowserve’s ValveSight™ DTM opens a ‘window’ to the device and allows immediate views with live feedback on all active device sensors includ-ing valve stem position, control signal, friction, response time and other important system metrics.ValveSight™ DTM software enables communication between the software and field device networks using the HART or FF protocol and provides access to the 24/7 diagnostic information from field devices. Using FDT/DTM technology maintenance personnel can access any Logix 500MD series positioner on the network from a single workstation. Addi-tionally, the software has the capability to store configuration and calibration history and view event logs for each digitalpositioner accessible through the network.71Limited function. No health information - 2 Limited function. No pressure monitoring informationSpecifications8910DimensionsFigure 4: Dimensional Drawing of the Logix 520MD Series Digital Positioner11All data subject to change without notice ©03.2009 Flowserve Corporation. Flowserve and Kämmer are registered trademarks of Flowserve CorporationYour contact:Flowserve Headquarters 5215 N. O'Connor Blvd.Suite 2300Irving, Tx. 75039Phone: +1 972 443 6500Flowserve Corporation Flow Control1350 N. Mt. Springs Parkway Springville, UT 84663 USAPhone: +1 801 489 8611 Fax: +1 801 489 3719Flowserve (Austria) GmbHControl Valves - Villach Operation Kasernengasse 6 9500 Villach AustriaPhone: +43 (0)4242 41181 0 Fax: +43 (0)4242 41181 50Flowserve Australia Pty Ltd.14 Dalmore DriveScoresby, Victoria 311212AustraliaPhone: 61 7 32686866Fax: 61 7 32685466China585, Hanwei Plaza 7 Guanghau Road Beijing, China 100004Phone: +86 10 6561 1900Flowserve India Controls Pvt. Ltd Plot # 4, 1A, E.P .I.P , Whitefield Bangalore Kamataka India 560 066Phone: +91 80 284 10 289Fax: +91 80 284 10 286Flowserve Essen GmbH Manderscheidtstr. 19 45141 Essen GermanyPhone: +49 (0)201 8919 5 Fax: +49 (0)201 8919 662Flowserve S.A.S.7, Avenue del la Libération - BP 60 63307 Thiers Cedex FrancePhone: +33 (0)4 73 80 42 66 Fax: +33 (0)4 73 80 14 24Flowserve Pte Ltd.12 Tuas Avenue 20Singapore 638824SingaporePhone: 65 6868 4600Fax: 65 6862 4940NAF ABGelbgjutaregatan 2 SE-581 87 Linköping SwedenPhone: +46 (0)13 31 61 00 Fax: +46 (0)13 13 60 54Kämmer Valves INC.1300 Parkway View Drive Pittsburgh, Pa 15205USATel.: +1 412 787 8803Fax: +1 412 787 1944。
CG2V-6 8, 10 Series; CG5V-6 8, 20 Series 双阶段压力限制或控
GB-2323ACG2V-6/8, 10 Series; CG5V-6/8, 20 Series Maximum pressure350 bar . . . . . . . . . .(5000 psi)Maximum ow 400 L/min. . . . . . . . . . . . . (106 USgpm)Mounting face to ISO 6264:CG*V-6 valves AR-06-2-A . . . . . . . . . . . . CG*V-8 valves AS-08-2-A. . . . . . . . . . . General DescriptionThese two-stage valves are used to limit or control pressure by directing up to the total system uid ow to reservoir when system pressure reaches the setting of the valve. System actuators are thus protected against overload.Each relief valve incorporates a vent port that can be connected to a separate pilot control valve to remotely control or unload system pressure.Two types of valve are presented in this catalog:CG2V-***, 10 series: relief/sequencevalve with integral manual adjustment of pressure setting.CG5V-***, 20 series: relief valve with solenoid operated pilot valve for loading/unloading.A third type, KCG-*, 10 series, with proportional pilot control valve, is described in catalog 2324.Features and Bene tsClose matching to application requirements from choice of four adjustment control ranges covering 3 to 350 bar (44 to 5000 psi).Electrical on/o load from solenoid controlled models.Remote parallel control by other pilot valves connected to “vent” port.High machine productivity resulting from full system ow being available for work output until system pressure is very close to valve setting.Pressure override optimized without detriment to other performance parameters.Excellent repeatability and stable performance from cartridge-type design of mainstage parts.Low o -load power wastage.International mounting interfaces.Low installed cost and spacerequirement from high power/size ratios (more than double that of many conventional designs).Pressure Relief and Sequence ValvesVickers by Danfoss®Pressure ReliefAF439975160003en-000101Side drain portIf a valve with an integral, reverse free- ow check is required, use a type RCG valve, as in catalog 429.BFor Valves with Manual Adjustment Only(F3-)CG2V-***-1*123411(-1)5For Valves with Manual Adjustment Plus Electrical Load/Unload(F3-)CG5V- ***12349-D(-*)-(V)M-***(-L)-*5-2*67810112Functional SymbolsRelief valve, manually adjusted,CG2V-***-1* modelSequence valve, manually adjusted,CG2V-***-1-1* modelSolenoid controlled relief valve, pilots internally drained, CG5V-***-D-2* modelModel Codes3Operating DataData is typical with oil at 22 cSt (106 SUS) and at 50 C (122F)4VentingSystem pressure can be dropped to near-zero by connecting vent port X to reservoir through a suitable pilot valve, e.g:5Control Data for CG2V ValvesManual adjustment of pressure setting described in “Installation Dimensions ”.Hydraulic Remote ControlRemote adjustment of pressure setting can be made by a pilot relief valve,substituted for the vent valve in the diagram. Suitable pilot relief valves are described in catalogs 411 (type C-175valves) and 409 (type CGR-02 valves).Control Data for CG5V Valves Vent FunctionThe solenoid operated pilot valve isVickers by Danfoss model type DG4V-3S, with spool type “0B ” (ref. catalog 2015). When the solenoid is de-energized, the CG5V relief valve is unloaded by venting the pilot drain to port T. Note that any back pressure at port T is additive to the minimum possible unloaded pressure,and is also additive to the on-load pressure setting.When the solenoid is energized the pilot ow is blocked to bring the relief valve on load. For this function port X would normally be blocked (e.g. no connection from the mounting face). Further remote control pressure settings are possible by connecting port X to suitable pilot relief valves via other DG4V-3S type directional control valves.1106Hydraulic FluidsAll valves can be used with:Antiwear hydraulic oils (class L-HM)Invert emulsions (class L-HFB)Water glycol (class L-HFC)Phosphate ester (class L-HFD), adding “F3-” pre x at model code .The extreme viscosity range is from 500 to 13 cSt (2270 to 70 SUS) but the recommended range is 54 to 13 cSt (245 to 70 SUS).For further information about uids see “Technical Information ” lea et 920.Temperature LimitsMinimum ambient: –20C (–4F)Maximum ambient:For CG2V valves: 70C (158F)For CG5V valves with coils listed inmodel code and at 110% of rated voltage:Coil type and frequencyMax. ambient temperature Dual frequency coils at 50 Hz at 60 Hz65 C (149F)65 C (149F)Single frequency (50 Hz) coils at 50 Hz 65C (149F)DC coils70 C (158F)Fluid temperatures (all models)PetroleumoilWater-containing Min.–20C (–4F)+10C (+50F)Max.*+70C (+158F)+54C (+129F)*To obtain optimum service life from bothuid and hydraulic system, 65 C (150F)normally is the maximum temperature except for water-containing uids.For synthetic uids consult uid manufacturer or Danfossrepresentative where limits are outside those of petroleum oil.Whatever the actual temperature range, ensure that viscosities stay within the limits speci ed in the “Hydraulic Fluids ” section.Contamination Control RequirementsRecommendations on contamination control methods and the selection of products to control uid condition areincluded in Vickers by Danfoss publication 9132 or 561,“Vickers by Danfoss Guide to Systemic Contamination Control ”. The book alsoincludes information on the Vickers by Danfoss concept of “ProActive Maintenance ”.The following recommendations are based on ISO cleanliness levels at2m, 5 m and 15 m. For products in this catalog the recommended levels are:Up to 210 bar (3050 psi)19/17/14. . . . . Above 210 bar (3050 psi)19/17/14. . . .Installation Dimensions in mm (inches)Micrometer Adjustment Options:“K” or “M” in Model Code“K” FeatureTo adjust pressure setting, insert key and turn clockwise. Turn micrometer knob clockwise to increase pressure setting; counter-clockwise to decrease setting. When the key is removed the knob can spin freely without a ecting the pressure setting.47Model A B C D E rad.Ø F (dia)G CG*V-658,0(2.3)35,0(1.4)68,0(2.7)35,0(1.4)12,0(0.5)20,0(0.78)79,0(3.1)CG*V-842,0(1.7)39,0(1.54)83,0(3.3)30,0(1.2)16,0(0.63)26,0(1.02)103,0(4.1)Model H Ø J (dia)K L M(AC coils)M(DC coils)CG*V-682,0(3.23)13,5(0.53)176,0(7.0)20,0(0.78)160,0(6.3)170,0(6.7)CG*V-8106,0(4.2)17,0(0.7)183,0(7.2)25,0(1.0)169,0(6.65)179,0(7.1)CG5V ModelsWith TypeFor dimensions “B” and “M”, see previous page.Connectors”.With Type “F” Coil Connection(“F(T)J” or “F(T)W” at model code )8Codes“FTJ” and “FTW”: lead wires connected into terminal For dimensions “B” and “M”, see previous page.strip suitable for M3 terminals on customer connection.89(0.24) deep min.remote port is not to be used10Mounting Surfaces, ISO 6264AR-06-2-A AS-08-2-AWhen a subplate is not used a raised pad must be provided for mounting. The pad must be at within0,001 mm/100 mm (0.0001/10) and smooth within 0,8 m (32 in).Dimensional tolerances are0,2 mm (0.008) except where indicated.Port functionsP =Pressure inlet T =Outlet to reservoirX =Vent, or remote pilot control portSize AB C D EF HJ K L AR-0680 (3.2)13,1 (0.5)53,8 (2.12)13,1 (0.5)47,5 (1.87)22,1 (0.87)22,1 (0.87)0 (0)13,1 (0.5)53,8 (2.12)AS-08118 (4.7)35,0 (1.4)66,7 (2.63)16,3 (0.7)55,6 (2.19)33,4 (1.35)11,1 (0.44)23,8 (0.94)16,0 (0.63)70,0 (2.76)Size M N Ø P (dia)Q Ø T (dia)Ø X (dia)Y thread x min. full thread depth Tolerance on bolt and pin locations 0,1 (0.004).These ISO standard dimensions can be used, but improved ow paths to and from valve are obtained by using 48,0 (1.89) instead of 47,5 (1.87), and 22,6 (0.89) instead of 22,1 (0.87).ISO standard does not give UNC bolt sizes. These are recommended equivalents to metric sizes speci ed in the standard.Installation DataMounting Attitude Unrestricted.SubplatesFor CG*V-6 valves see typeCGVM-6-10-R on previous page.For CG*V-8 valves consult your Vickers representative.Mounting Bolts/TorquesFor CG*V-6 valves: bolt kit BKCG2V-6.Bolts should be torqued to 103-127 Nm (76-94 lbf ft), with threads lubricated.For CG*V-8 valves: bolt kit BKCG2V-8.Bolts should be torqued to 257-315 Nm (190-232 lbf ft), with threads lubricated.Mass (approx.)CG2V-63,5 kg (7.7 lb). . . . . . . . . . . . . . . CG2V-84,4 kg (9.7 lb). . . . . . . . . . . . . . . CG5V-6:With AC solenoid 5,0 kg (11 lb). . . . . . . . With DC solenoid 5,2 kg (11.5 lb). . . . . . CG5V-8:AC solenoid 5,9 kg (13 lb). . . . . . . . . . . . DC solenoid 6,1 kg (13.5 lb). . . . . . . . . .Electrical Plugs and Connectors 8For CG5V valves with type F(T)J or F(T)W coils, see model code8For “FTJ ” or “FTW ” at model code 1.For DC coils the +ve lead(s) must be connected to the terminal(s) marked +. When using 3-wire incoming leads to double solenoid valves (i.e. common neutral) the inner pair of terminals must be linked. 2.For correct light indication of energized solenoid ensure that solenoid leads are correctly connected: light terminals are common with each outer pair of solenoid terminals according to the side with + mark.8For “FTJL ” or “FTWL ” at model code +89T11Plugs for ISO 4400 (DIN 43650) Type Coil ConnectionFor CG5V valves with type “U” coils(model code )The cable entry on these plugs can berepositioned at 90 intervals byreassembly of the contact holder relative to the plug housing. The cable entry isPg11 for cable Ø 6-10 mm (0.24-0.4).Terminal Strip and LightsOrdering ProcedureValves, subplates and bolt kits should beordered by full model code designation.Order plugs by part number.Order plugs separately by part number.Voltage Part number Gray (Sol.A)Black (Sol.B)Without indicator light –710776710775With indicator light12- 24V 100-125V 200-240V 977467977469977471977466977468977470Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electric components. We specialize in providing state-of-the-art technology and solutions marine sector. Building on our extensive applications expertise, we work closely with you to ensure exceptional performance for a broad range of applications. We help you and other customers around the world speed up system development, reduce costs and bring vehicles and vessels to market faster.Danfoss Power Solutions – your strongest partner in mobile hydraulics and mobile Go to for further product information.outstanding performance. And with an extensive network of Global Service Partners, we also provide you with comprehensive global service for all of our components.Local address:Danfoss Power Solutions GmbH & Co. OHG Krokamp 35D-24539 Neumünster, Germany Phone: +49 4321 871 0Danfoss Power Solutions ApS Nordborgvej 81DK-6430 Nordborg, Denmark Phone: +45 7488 2222Danfoss Power Solutions (US) Company 2800 East 13th Street Ames, IA 50010, USA Phone: +1 515 239 6000Danfoss Power Solutions Trading (Shanghai) Co., Ltd.Building #22, No. 1000 Jin Hai Rd Jin Qiao, Pudong New District Shanghai, China 201206Phone: +86 21 2080 6201Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products agreed.All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.© Danfoss | September 2022•Cartridge valves •DCV directional control valves •Electric converters •Electric machines •Electric motors •Gear motors •Gear pumps •Hydraulic integrated circuits (HICs)•Hydrostatic motors •Hydrostatic pumps •Orbital motors •PLUS+1® controllers •PLUS+1® displays •PLUS+1® joysticks and pedals •PLUS+1® operator interfaces •PLUS+1® sensors •PLUS+1® software •PLUS+1® software services,support and training •Position controls and sensors •PVG proportional valves •Steering components and systems•Telematics Hydro-Gear Daikin-Sauer-Danfoss 。
Pilot Operated Pressure Relief Valves Series R R
8The pressure relief valve series R consists of a manual adjustment pilot stage and a cartridge main stage.The pressure relief valve series RS consists of a manual adjusted pilot stage with a directional valve for an electri-cally controlled vent function and a cartridge main part.The R/RS*E model codes embrace the pilot valves, cov-ers and cartridges that are also offered as separate items. See combination examples for details.Features• Pilot operated with manual adjustment• Cavity and mounting pattern according to ISO 7368• 6 pressure stages• 2 switching types (series RS*E)• 2 adjustment modes - Hand knob- Acorn nut with lead seal • 6 sizes, NG16 to NG63NotePort X only usable for remote control.R25E RS25ERS*ESeries R / RS*E8Ordering CodeCodeNominal size16NG1625NG2532NG3240NG4050NG5063NG63relief valve spring Code Seal N NBR VFPMsize ment (pilot internal,drain external)mounting ISO 7368Design series (not required for ordering)Design series (not required for ordering)stages typeCode Spool type omit Standard S07with poppet sealsrelief valve with elec. un-loading spring size ment (pilot int.,drain ext.)mounting ISO 7368stages type Code Spool type omit Standard S07with poppet seals type plug Code Options omit Standard Swith slow unloading 1) To be used in combination with rectifier plugs at 120 VAC / 230 VAC power supply.Code Solenoid K 12 V J 24 V U 1)98 V G 1)205 VCodeSeal N NBR VFPMCode Switching type1Solenoid not activated, unpress. circulation 9Solenoid activated, unpress. circulationR*ERS*ECode Pressure stages 07up to 70 bar 10up to 105 bar 17up to 175 bar 21up to 210 bar 25up to 250 bar 35up to 350 barCode Nominal size16NG1625NG2532NG3240NG4050NG5063NG63Code Pressure stages 07up to 70 bar 10up to 105 bar 17up to 175 bar 21up to 210 bar 25up to 250 bar 35up to 350 bar Code AdjustmentS Hand knob (standard)A Acorn nut with lead sealCode Adjustment S Hand knob (standard)A Acorn nut with lead sealSeries R / RS*E8Technical DataR*ERS*ESeries R / RS*E8Characteristic Curvesp/Q performance curve 1)1) The performance curves are measured with external drain. For internal drain the tank pressure has to be added to curve.All characteristic curves measured with HLP46 at 50 °C.20406080100Nominal flow Q [%]500100300150200250350450400P r e s s u r e p [b a r ]Series R / RS*E8Dimensions1) NG40 without adaptor plate.2) Width 79 mm.Dimensions R*E NG16 - NG32NG40 - NG63 1)Series R / RS*E8Dimensions1) NG40 without adaptor plate.2) Width 79 mm.Dimensions RS*E NG16 - NG32NG40 - NG63 1)。
VTS操作人员英语培训教材(中英文)珍藏版
船舶交通管理中心VTS标准用语培训（中英文）课程框架VTS标准用语（中英文）具体教学大纲目录第一章VTS 通信协议VTS communication protocols (1)第二章总则GENERAL (2)2.1 程序 procedure (2)2.1.1 交换程序 exchange procedure (2)2.1.2 广播程序 Broadcast procedure (3)2.1.3 遇险、紧急和安全通信程序Distress , urgency andsafety communication procedures (4)2.2 VTS 标准用语信文标题的应用 (7)2.2.1 指示（INSTRUCTION） (8)2.2.2建议（ADVICE） (8)2.2.3警告（WARNING） (8)2.2.4信息（INFORMATION） (9)2.2.5询问（QUESTION） (9)2.2.6回答（ANSWER） (9)2.2.7请求（REQUEST） (10)2.2.8意图（INTENTION） (10)第三章VTS标准通信用语VTS standard communication phrases (10)第四章常见用语 (10)4.1信号强度 Signal strength (10)4.2 选择工作频道 selecting working channel (11)4.3 改正 corrections (11)4.4 重复repetition (11)4.5数字Numbers (12)4.6位置 Positions (12)4.7方位Bearings (13)4.8 航向 courses (14)4.9距离distances (14)4.10 速度Speed (14)4.11时间Times (15)4.12 地理名称geographical names (15)第五章通信范例 (15)5.1动态报告 Movement Report (15)5.2 作业报告 Operation Report (17)5.3分道通航制 TSS (20)5.4碰撞 COLLISION (23)5.5搁浅 Grounding (26)5.6失火 FIRE (30)5.7油污染 OIL POLLUTION (33)5.8遇险通信 DISTRESS COMMUNICATION (35)5.9搜寻救助 SEARCH AND RESCUE (36)5.10医疗援助 MEDICAL ASSISTANCE (40)第六章词汇VOCABULARY (43)6.1船舶规范 (43)6.2 船舶结构 SHIP’S STRUCTURE (44)6.3 操纵设备 MANOEUVERING FACILITIES (45)6.4 安全设备SAFETY EQUIPMENT (47)6.5 船舶定线制和报告制 SHIP’S ROUTING AND REPORTING SYSTEM (50)6.6 航行和操纵NAVIGATING AND MANOEUVERING (51)6.7航标 AIDS TO NAVIGATION (53)6.8 气象和水文状况 METEOROLOGICAL AND HYDROLOGICAL CONDITIONS (53)6.9 港口设施和海岸特征 PORT FACILITIES ANDE COAST FEATURES (54)6.10 搜寻救助 SEARCH AND RESCUE (55)6.11医疗MEDICAL SECTION (56)第七章字母和数字的拼读 (57)第一章 VTS 通信协议 VTS communication protocols作为一个通信系统，必须制定协议，以保证VTS的信息是：As a communication system, protocols need to be developed to ensure that VTS messages are:清晰的；Clear;简明的；Simple, and仅包含必要的信息。
VALVE MEMBER FOR PILOT OPERATED VALVES
专利名称：VALVE MEMBER FOR PILOT OPERATED VALVES发明人：JAMES P. FROMFIELD申请号：AU4598279申请日：19790412公开号：AU4598279A公开日：19791011专利内容由知识产权出版社提供摘要：A valve member including a flexible diaphragm movable into and out of engagement with a valve seat to close and open the valve, respectively. A rigid support plate rests against the face of the diaphragm opposite the face which engages the valve seat. A stem projects from the plate, through a hole in the diaphragm and into the orifice surrounded by the valve seat. The diaphragm and plate are not rigidly secured together, so that the entire diaphragm is free to flex with respect to the support plate. A pilot passageway may extend completely through the plate and stem. The stem is long enough such that the lower end of the pilot passageway is below the plane of the valve seat even when the valve is open. An abutment, such as an outwardly projecting bead, on the lower end of the stem prevents accidental separation of the plate and diaphragm before they are assembled with a valve.申请人：AUTOMATIC SWITCH COMAPNY更多信息请下载全文后查看。
FESTO VZWF 迷你型螺纹口径2-2方向气动阀门说明书
Solenoid valves VZWF, force pilot operated, NPTKey features and overview FunctionNormally closed solenoid valve with diaphragm and forced lifting. When the solenoid is energised, the differential pressure from the secondary side of the diaphragm is reduced via the servo hole. The effective differential pressure lifts the diaphragm away from the valve seat. If there is no differential pressure, the diaphragm is lifted directly by the solenoid. The valve opens and closes without a differential pressure between the inlet and outlet.General Application Design Advantages-N-Connecting thread1/4 NPT … 2 NPT -M-Flow rate Kv1.8 … 28 m3/h Suitable for closed applicationssuch as cooling or filling systemsVacuumLiquid gasBottling systemsDiaphragm valvesForced lifting of the valvediaphragm2/2-way valve, normally closedChoice of sealing materials fordifferent fields of applicationsMedium pressure 0 bar or higher-H-NoteThe valves are suitable for vacuumwith Pabs 100 mbar. Pleaseensure the direction of flow corresponds to the direction of the arrow.Subject to change – 2017/02 2è Internet: /catalogue/...Type codesVZWF–B–L–M22C–N14–135–V–2AP4–10–R1 TypeVZWF Solenoid valve, force pilot operatedProduct version–StandardB Optimised functionType of directional control valveL In-line valveValve functionM22C2/2-way valve, normally closedProcess valve connectionN141/4 NPTN383/8 NPTN121/2 NPTN343/4 NPTN1 1 NPTN114 1 1/4 NPTN112 1 1/2 NPTN2 2 NPTNominal size (DN)13513.5 mm27527.5 mm40040 mm50050 mmSealing material–Standard (NBR)E EPDMV FPMNominal operating voltage124 V DC2A110 V AC/50-60 Hz3A230 V AC/50-60 HzElectrical connectionP4Plug socket, 3-pinMedium pressure6Max. 6 bar10Max. 10 barCorrosion protection–Standard (brass)R1Stainless steelè Internet: /catalogue/...2017/02 – Subject to change3Technical data – Connecting thread 1/4 NPT … 1 NPTGeneral technical dataProcess valve connection1/4 NPT3/8 NPT1/2 NPT3/4 NPT 1 NPTNominal size (DN)13.513.513.527.527.5Valve function2/2-way, single solenoid, closedDesign Diaphragm valve, force pilot operatedType of mounting In-line installationActuation type ElectricManual override NoneMounting position Solenoid verticalSealing principle SoftDirection of flow Non-reversibleMax. viscosity[mm2/s]22Protection class IP 65Product weight[g]1000 15004è Internet: /catalogue/...Subject to change – 2017/02Technical data – Connecting thread 1/4 NPT … 1 NPTOperating and environmental conditionsProcess valve connection1/4 NPT3/8 NPT1/2 NPT3/4 NPT 1 NPTSwitching time on[ms]130275Switching time off[ms]180290Standard nominal flow rate[l/min]1920 2350 2660 8020 11750Flow rate[m3/h] 1.8 2.2 2.57.511Process valve nominal pressure (PN)40Differential pressure[bar]0Medium pressure2)[bar]0 ... 100 (6)Medium Compressed air in accordance with ISO 85731:2010 [7:–:–]Inert gasesMineral oilWaterNeutral liquidsFurther media upon requestAmbient temperature[°C]–10 … +35 °CTemperature of medium[°C]–10 … +80 °CLeak rate to EN 12266-1ACorrosion resistance class3CRC1)Stainless steel1)Corrosion resistance class CRC 3 to Festo standard FN 940070High corrosion stress. Outdoor exposure under moderate corrosive conditions. External visible parts with primarily functional requirements for the surface and which are in direct contact with a normal industrial environment.2)The valves are suitable for vacuum with Pabs 100 mbar. Please ensure the direction of flow corresponds to the direction of the arrow.MaterialsSolenoid valves Material numberHousing Brass casting CW617NStainless steel casting 1.4581Screws High-alloy stainless steel 1.4301Seals NBR–FPM–EPDM–Note on materials Contains PWIS (paint-wetting impairment substances)RoHS-compliantè Internet: /catalogue/...2017/02 – Subject to change5Technical data – Connecting thread 1/4 NPT … 1 NPTElectrical dataVZWF- … 1VZWF- … 2A VZWF- … 3AElectrical connection Plug to EN 175301-803 type A, square designCE mark as per EU Pressure Equipment Directive–Yes YesCoil characteristics Direct current DC[V]24––Alternating current AC[V]–110230[W]11––Switching power[VA]–1918Holding power[VA]–1615[Hz]–50, 6050, 60Permissible voltage fluctuations[%]_10B1B2D1D2H1H2H3H4L1L2L3L4L5T1T2ßVZWF-B-L-M22C-N14-135-…48301/4 NPT M410186427926758252112427 VZWF-B-L-M22C-N14-135-…-R144301/4 NPT M410186427946758252112427 VZWF-B-L-M22C-N38-135-…48303/8 NPT M410186427926758252112427 VZWF-B-L-M22C-N38-135-…-R144303/8 NPT M410186427946758252112427 VZWF-B-L-M22C-N12-135-…48301/2 NPT M410186427926758252112427 VZWF-B-L-M22C-N12-135-…-R144301/2 NPT M410186427946758252112427 VZWF-B-L-M22C-N34-275-…70303/4 NPT M6120964271069658402816641 VZWF-B-L-M22C-N1-275-…7030 1 NPT M61209642710696584028166416è Internet: /catalogue/...Subject to change – 2017/02Technical data – Connecting thread 1/4 NPT … 1 NPTè Internet: /catalogue/...2017/02 – Subject to change7Technical data – Connecting thread 1 1/4 NPT … 2 NPTGeneral technical dataProcess valve connection 1 1/4 NPT 1 1/2 NPT 2 NPTNominal size (DN)404050Valve function2/2-way, single solenoid, closedDesign Diaphragm valve, force pilot operatedType of mounting In-line installationActuation type ElectricManual override NoneMounting position Solenoid verticalSealing principle SoftDirection of flow Non-reversibleMax. viscosity[mm2/s]22Protection class IP 65Product weight[g]4500 65008è Internet: /catalogue/...Subject to change – 2017/02Technical data – Connecting thread 1 1/4 NPT … 2 NPTOperating and environmental conditionsProcess valve connection 1 1/4 NPT 1 1/2 NPT 2 NPTSwitching time on[ms]6201220Switching time off[ms]1140 2140Standard nominal flow rate[l/min]21370 23500 29900Flow rate[m3/h]2022.528Process valve nominal pressure (PN)40Differential pressure[bar]0Medium pressure2)[bar]0 ... 100 (6)Medium Compressed air in accordance with ISO 85731:2010 [7:–:–]Inert gasesMineral oilWaterNeutral liquidsFurther media upon requestAmbient temperature[°C]–10 … +35 °CTemperature of medium[°C]–10 … +80 °CLeak rate to EN 12266-1ACorrosion resistance class3CRC1)Stainless steel1)Corrosion resistance class CRC 3 to Festo standard FN 940070High corrosion stress. Outdoor exposure under moderate corrosive conditions. External visible parts with primarily functional requirements for the surface and which are in direct contact with a normal industrial environment.2)The valves are suitable for vacuum with Pabs 100 mbar. Please ensure the direction of flow corresponds to the direction of the arrow.MaterialsSolenoid valves Material numberHousing Brass casting CW617NStainless steel casting 1.4581Screws High-alloy stainless steel 1.4301Seals NBR–FPM–EPDM–Note on materials Contains PWIS (paint-wetting impairment substances)RoHS-compliantè Internet: /catalogue/...2017/02 – Subject to change9Subject to change – 2017/0210è Internet: /catalogue/...Technical data – Connecting thread 1 1/4 NPT … 2 NPT Electrical dataVZWF- (1)VZWF- … 2AVZWF- … 3A Electrical connectionPlug to EN 175301-803 type A, square design CE mark as per EU Pressure Equipment Directive –Yes Yes Coil characteristics Direct current DC[V]24––Alternating current AC[V]–110230[W]30––Switching power [VA]–3030Holding power[VA]–3030[Hz]–50, 6050, 60Permissible voltage fluctuations [%]_10B1B2D1D2H1H2H3H4L1L2L3L4L5T1T2ßVZWF-L-M22C-N114-400-…9663 1 1/4 NPT 205173591714814076––22–58VZWF-L-M22C-N112-400-…9663 1 1/2 NPT 205173591714814076––22–58VZWF-L-M22C-N2-500-…112632 NPTM6218179591715916876605525670M6M6Solenoid valves VZWF, force pilot operated, NPTTechnical data – Connecting thread 1 1/4 NPT … 2 NPTè Internet: /catalogue/...2017/02 – Subject to change11。
SunHydraulicsTechnicalTips-SequenceValves
Sun Hydraulics Technical TipsSequence ValvesAPPLICATIONSSequence CartridgesSun sequence cartridges are normally closed pressure control elements designed to modulate flow from port 1 (inlet) to port 2 (outlet) (like a relief valve) as long as the pressure at port 1 exceeds the pressure setting plus the back pressure at port 3 (the control chamber drain). Unlike relief valves, sequence valves generate a constant pressure at the inlet port irrespective of the pressure on the outlet port. When pressures at port 1 and port 2 both exceed the setting of the valve, the valve goes “full open”, or “sequences”. This function is achieved by draining the spring chamber separately to tank. Sequence valves can be used to sense pressure (port 1) in one circuit and then open and supply oil to a secondary circuit (port 2) at a predetermined pressure.• A typical application would be when maintained clamping pressure is required in the primary circuit while work is being performed in the secondary circuit.• A sequence valve can be used as an accurate pressure limiting valve where there is varying back pressure on the tank port.• Another application would be to maintain a minimum “pilot pressure” in an open flow circuit. (Unlike a relief valve, the “full open” feature of a sequence valve, above its setting, tends to eliminate parasitic losses in the system at working pressures. (See Figure 1 on page 2.)• A sequence valve can also function as an adjustable bypass pressure compensator. (See Figure 2 on page 2.)Sun Hydraulics’ sequence valves have flow capacities up to 120 gpm (460 L/min) and are fully adjustable over a range of operating pressures up to 5000 psi (350 bar) (6000 psi [420 bar] intermittent). (Air piloted versions have lower pressure ranges.) Prior to shipping, all Sun sequence valves are factory pressure set with a flow of 4 gpm (16 L/min).NOTE: All Sun three port sequence cartridges are functionally interchangeable (i.e. same flow path and same cavities for a given frame size).This drawing is not a real circuit and is intended for descriptiononly.Design Concepts and FeaturesThree Port Direct Acting Pressure Generating Sequence Cartridges —SX*A and SC*A (with reverse flow check)The performance parameters optimized in Sun’s SX*A and SC*A sequence valves are:• Suitable for use in load holding applications.• Reverse flow from port 2 to port 1 is blocked. (Use SC*A with reverse flow check if reverse flow is required.)• Low hysteresis (reseats at 90% of valve setting) and very low leakage (10 drops per minute at reseat).• There is no pilot flow from the drain port, but this port must not be plugged, as this could cause malfunction.• Fast opening and closing (2 ms typical response time).• Insensitivity to varying oil temperature and oil-borne contami-nation.• Reliable cold oil closing and exceptional hot oil stability (no oscillation).• Rugged, robust, construction withstands high pressure shocks or back pressure.• The pressure override curve is steeper than pilot operated versions.NOTE: See General Sequence Valve Note on page 3.Two Port Direct Acting Pressure Regulating Sequence Cartridges – SXCB and SCCB (with reverse flow check)The performance parameters for Sun’s SXCB and SCCB sequence valves are the same as the SX*A and SC*A valves, except there is no port 3; the spring chamber is referenced to atmosphere. Additional performance parameters include:• Two port sequence valves are only available in Series 1 frame size (15 gpm/60L/min).• Over a period of time, external fluid “weepage” may occur.(Approximately 1 drop per 4000 cycles)Three Port Pilot Operated Pressure Regulating Sequence Cartridges – RS*CSun’s RS*C balanced piston, two stage, sequence cartridge valves are optimized to operate over a wide flow range, up to 120 gpm (460 L/min). Performance parameters include:• Flatter pressure override curve as compared to direct acting versions.• Stable operation.• The pilot orifice is protected by a 150 micron stainless steel filter screen. (Continued on page 3.)These drawings are not real circuits and are intended fordescription only.(Continued from page 2.) • The minimum pressure setting is determined by the mainspool bias spring, which establishes the lowest pressure atwhich pilot flow will open the main spool. • Reverse flow from port 2 to port 1 is blocked. (If reverse flow is required, use an external check or an SC*A with reverse flow check.) • Low hysteresis and low spool leakage between port 1 and port 2 and is frame size dependant (approximately 2-5 in 3/min per 1000 psi [32-82 cc/min per 70 bar]).• Pilot flow out of port 3 will be about 20 in 3/min (0,33 L/min) with 1000 psi (70 bar) at port 1. The actual pilot flow isdependent on the pressure at port 1 and will rise and fall inrelation to this pressure. (Go to Sun’s web site to view performance graphs on individual RS*C product pages.)• Valve may be “blocked” by shutting off the pilot flow at port 3 (with a two-way valve, for instance), thus causing the valve to remain closed even at its set point. If port 3 is then “vented” to drain, the valve will operate normally, opening at its set point.NOTE: See General Sequence Valve Note at bottom of page.Three Port Pilot Operated Pressure RegulatingSequence Cartridges – RS*SSun’s RS*S balanced poppet , two stage, sequence cartridges have similar features to the RS*C series except a poppet replaces the spool in the main stage. The modified performance parameters include:• Slightly higher hysteresis (+/- 2%). • Pressure override curve greater than RS*C balanced pistonvalve, but lower than direct acting versions.• Seated poppet design achieves very low leakage (10 drops/min at reseat). • Poppet design almost eliminates cavitation erosion that can occur in manifolds adjacent to the valve discharge holes.• RS*S sequence valves are only available in Series 4 size(120 gpm/460 L/min).NOTE: See General Sequence Valve Note at bottom of page.Three Port Pilot Operated Kick-Down Sequence Cartridges – SQ*BSun’s SQ*B balanced piston kick-down sequence cartridges shift completely open after the pressure setting for port 1 is attained. The valve will stay open as long as the pressure at port 1 (inlet) exceeds the pressure at port 2 (outlet). Performance parameters of Sun’s kick-down sequence valves include:• Very accurate trigger point (valve setting). • Typical response time of 40 ms.• At nominal full flow(s), pressure drop is very low, reducing heat generation. (Approximately 50 psi (4 bar) for SQEB at 10 gpm (40 L/min.)• Low spool leakage in closed mode (before reaching “trigger point”) from port 1 to port 2 or port 2 to port 1. (Leakage is frame size dependant and varies approximately 2-5 in 3/min per 1000 psi [32-82 cc/min per 70 bar].)• If reverse flow is desired, a separate free flow check is required.• Once opened, the valve can only be reset by stopping allflow through the valve. Centering or reversing the directional valve will usually reset the sequence valve. • Should not be used in load holding applications. • Pilot flow out port 3 of 20 in 3/min (0,33 L/min), and will riserelative to the pressure rise on port 1. (See individual valve performance graphs on Sun’s web site.) • The pilot orifice is protected by a 150 micron stainless steelfilter screen.NOTE: See General Sequence Valve Note at bottom of page.Three Port Air Controlled Pilot Operated Sequence Cartridges — RS*ESun’s RS*E balanced piston sequence valves use compressedair over a diaphragm instead of an adjustable spring to provideremote control of the valve pressure setting. Performance parameters/features include: • Hydraulic pressure setting is directly proportional to air pressure setting (pilot ratio equals 20:1; i.e. 10 psi (0,7 bar) air pressure is equal to a 200 psi (14 bar) valve setting).• Maximum operating pressure = 2000 psi (140 bar). • Maximum air pressure should not exceed 150 psi (10 bar). • Most other performance characteristics are similar to RS*C relief valves. • The pressure at port 3 determines minimum setting and must not exceed 1000 psi (70 bar).May be useful as an explosion proof valve where remote pressure control is required.Four Port Pilot Operated Vented Relief (Sequence) Cartridges – RV*D (Also see Tech Tips for Relief Valves)Sun’s RV*D balanced piston , two stage, vented, pressure regulating cartridges provide both a drain port (port 4) plus a remote pilot port (port 3). These cartridges combine the features of pilot operated, vented, relief valves with those of pilot oper-ated sequence valves. Performance parameters include:• With drain port (port 4) connected to tank, the valve is insensitive to any back pressure on port 2.• Can be used as a dual pressure sequence valve by connect-ing the pilot (port 3) to a remote, selectable, pilot source. (The main stage pressure setting must be set higher than that of the remote relief.)• Valve may be “blocked” by shutting off the pilot flow at port 4. As with the RS*C sequence valves previously described, if port 3 is then “vented” to drain, the valve will operate nor-mally, opening at its set point.• Any pressure at the drain port (port 4), is directly additive to pressure setting at the inlet (port 1).General Sequence Valve Note:Any pressure at port 3 (drain) is directly additive to the pressure setting at port 1 (inlet).FunctionDescriptionNominal CapacityModelCavitySymbol3 PortDirect Acting without Re-verse Flow Check15 gpm (60 L/min.) 30 gpm (120 L/min.)SXCA SXEAT-11A T-2A3 PortDirect Acting with Reverse Flow Check 15 gpm (60 L/min.) 30 gpm (120 L/min.)60 gpm (240 L/min.) 120 gpm (480 L/min.) SCCA SCEA SCGA SCIA T-11A T-2A T-17A T-19A2 PortDirect Acting without Re-verse Flow Check15 gpm (60 L/min.) SXCB T-13A2 PortDirect Acting with Reverse Flow Check15 gpm (60 L/min. ) SCCB T-13A3 PortPilot Operated, Balanced Piston7.5 gpm (30 L/min.) 15 gpm (60 L/min.) 30 gpm (120 L/min.) 60 gpm (240 L/min.) 120 gpm (480 L/min.) RSBC RSDC RDFC RSHC RSJC T-163A T-11A T-2A T-17A T-19A3 PortPilot Operated, Balanced Poppet120 gpm (480 L/min.) RSJS T-19ASequence Valve Overview3 PortKick-Down7.5 gpm (30 L/min.)15 gpm (60 L/min.) 30 gpm (120 L/min.) 60 gpm (240 L/min.) 120 gpm (480 L/min.)SQBB SQDB SQFB SQHB SQJBT-163A T-11A T-2A T-17A T-19A3 PortPilot Operated, Balanced Piston, Air Controlled30 gpm (120 L/min.) 60 gpm (240 L/min.) 120 gpm (480 L/min.) RSFE RSHE RSJE T-2A T-17A T-19AFunctionDescriptionNominal CapacityModelCavitySymbolSequence Valve Overview (continued)。
PILOT VALVE
专利名称：PILOT VALVE 发明人：ESKIL AURELL 申请号：AU4518179申请日：19790316公开号：AU4518179A 公开日：19790920专利内容由知识产权出版社提供摘要：A pilot valve is described for control of a pulse valve for e.g. production of pulses of compressed air. The pilot valve comprises a housing having an inlet and an outlet, a movable valve element disposed inside the housing, and means for switching said valve element between a closed and an open position, said inlet and outlet communicating in the open position. At least a portion of the interior of the housing presents in one plane a circular shape, the outlet being formed as a radial slot from this portion around at least a part of the periphery. The valve element is designed as a flexible disc which in the closed position is located in said plane to seal the slot with its outer edge at the inner side of the housing. Said means are arranged to switch the valve element to the open position by giving the disc a curved shape so that the outer edge no longer covers the slot.申请人：SVENSKA FLAKTFABRIKEN, AB更多信息请下载全文后查看。