AK-LWQ气体涡轮流量计说明书

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LLQ型腰轮说明书(2)

LLQ型腰轮说明书(2)

其中: ---标准状况下的体积流量(Nm3/h) ---当时实际工作状况下的体积流量(m3/h) P---当时管道中气体的实际绝对压力,若计量过程中压力有波动,则为 管道中气体实际平均绝对压力(Pa) P=+B ---当时压力计读出的气体平均表压(Pa) B---当时当地的大气压力 T---当时管道中气体的实际绝对温度(K),若计量过程中温度有波 动,则为管道中气体实际平均绝对温度 T=t+273.15K t---当时温度计读出的气体平均摄氏温度(℃) 七、智能流量积算仪功能 7.1智能流量积算仪内部构成由温度、压力检测模拟通道、流量传感器 通道以及微处理单元组成,并配有外输出各种信号接口。智能流量积算 仪中的CPU按照气态方程进行温压补偿,并自动进行压缩因子修正,气 态方程如下: 上式中:——未经修正的体积流量(m3/h)
一、概述 气体腰轮流量计作为容积式计量仪表已有一百多年的历史,以其精 度高、量程范围宽、体积小重量轻,安装维修方便、使用可靠、耐久的 使用寿命等特点,广泛应用于天然气、煤制气、惰性气体、空气等气体 的流量计量,是国内外城市燃气、油田化工,科学研究等部门理想的流 量计量装置。 二、工作原理 LLQ系列气体腰轮流量计,主要由壳体、共轭转子和计数装置等部 件构成。装于计量室内的一对共轭转子在流通气体的出入口压差(P 入>P出)作用下,通过精密加工的调校齿轮使轮子保持正确的相对位置.转 子间、转子与壳体、转子与墙板间保持最佳工作间隙,实现了连续的无 接触密封。转子第转动一周,则输出四倍计量室有效容积的气体,转子 的转数通过磁性密封联轴装置及减速机构,传递到积算指示计数器,从 而显示输出气体的累计体积量。其计量过程和工作原理如图1所示(图 中仅表示了四分之一周期)。
图3过渡管加工图 表2

涡轮流量计说明书

涡轮流量计说明书
(3) 累计流量:自动扩大显示精度,累计流量值可清零。
(4) 仪表系数:现场可置入。
(5) 掉电保护:仪表系数、累计流量值掉电保持十年不丢。
4.2三点系数双排液晶显示仪置数方法:(仅限授权工程师操作)
打开仪表前盖,同时按 键和F键,仪表进入置数状态,此时上排首位数字显示1,表示此时可设置第一点的仪表系数。上排的后四位可设置对应点的传感器输出脉冲频率值,下排八位可设置该点的仪表系数值。
DN50—DN200口径的传感器为法兰连接, 最大工作压力为2.5Mpa;
DN4—DN10口径的传感器带有前后直管段、过滤器。
DN15以上口径的传感器我公司可配套前后直管段。
DN25-DN40口径的传感器也可制作成法兰连接,但需在订货时说明。
(2) 介质温度:-20~+120℃。
(3) 环境温度:-20~+55℃。
红线
——
24V+
黑(绿)线
——
0V
图(五)
四、LWGYB型涡轮流量传感器
LWGYB型现场显示涡轮传感器是在LWGY基本型涡轮流量传感器的基础上,采用电池供电,增加了现场显示功能。该流量计是采用先进的超低功耗单片微机技术研制的传感器与显示积算一体化的新型流量测量仪表。与传统的涡轮流量传感器配二次仪表组成的测量系统相比,它具有体积小、重量轻、显示读数直观、清晰、可靠性高、不受外界电源影响、抗雷击、成套成本低等明显优点。可广泛应用于石油、化工、轻工、食品等行业的液体流量测量。本产品性能优越,达到国际同类产品的先进水平。
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九、订货须知·········································
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本产品依据JB/T 9246—1999机械行业标准设计制造

(产品管理)LWQ系列气体涡轮流量计产品说明书-无纸记录仪有纸记录

(产品管理)LWQ系列气体涡轮流量计产品说明书-无纸记录仪有纸记录

(产品管理)LWQ系列气体涡轮流量计产品说明书-无纸记录仪有纸记录□燃气计量专用仪表□油气回收系统专用仪表□始动流量低,可达0.5m3/h,适合贸易结算□高精确度,壹般可达±1.5%R、±1.0%R□重复性好,短期重复性可达0.05%-0.2%□温度、压力实时补偿,直接显示标准状态下流量概述——————————————LWQ型气体涡轮流量传感器是吸取了国内外流量仪表先进技术经过优化设计,综合了气体力学、流体力学、电磁学等理论而自行研制开发的新壹代高精度、高可靠性的气体精密计量仪表,具有出色的低压和高压计量性能,多种信号输出方式以及对流体扰动的低敏感性,广泛适用于天然气、煤制气、液化气、轻烃气等气体的计量。

该类涡轮流量产品本身不具备现场显示功能,仅将流量信号以脉冲信号的方式远传输出。

仪表价格低廉,集成度高,体积小巧,特别适用于和二次显示仪、PLC、DCS等计算机控制系统配合使用。

该类涡轮流量计均为防爆产品,防爆等级为:ExdIIBT6。

产品特点——————————————·优质合金涡轮,具有更高的稳流和耐腐蚀作用·进口优质专用轴承,使用寿命长·计量室和通气室隔绝,保证了仪表的安全性·流量范围宽(Qmax/Qmin≥20:1),重复性好,精度高(可达1.0级),压力损失小,始动流量低,可达0.6m3/h·仪表具有防爆及防护功能,防爆标志为ExdⅡBT6、ExiaⅡCT6,防护等级为IP65技术参数——————————————2.测量范围及工作压力公称通径型号标准量扩展耐压安装方式DN25 LWQ-25□——W3 0.5-4 4.0 法兰(螺纹)——W4 0.7-7 4.0——W5 1.5-15 4.0S1 3-30 W1 1.5-30 4.0S2 4-40 W2 2-40 4.0DN40 LWQ-40□S1 5-50 W1 2.5-50 4.0 法兰(螺纹)S2 8-80 W2 4-80 4.0DN50 LWQ-50□S1 10-100 W1 5-100 4.0 法兰S2 15-150 W2 8-150 4.0 法兰DN65 LWQ-65□S 15-200 W 10-200 1.6 法兰DN80 LWQ-80□S 15-300 W1 10-300 1.6 法兰W2 15-350 1.6 法兰DN100 LWQ-100□S 20-400 W1 15-400 1.6 法兰W2 20-500 1.6 法兰DN125 LWQ-125□S 20-800 W1 18-800 1.6 法兰W2 20-900 1.6 法兰DN150 LWQ-150□S 50-1000 W1 25-1000 1.6 法兰W2 50-1200 1.6 法兰DN200 LWQ-200□S 150-2000 W 80-2500 1.6 法兰DN250 LWQ-250□S 200-3000 W 150-3500 1.6 法兰DN300 LWQ-300□S 250-4000 W 200-4000 1.6 法兰仪表分类——————————————1.按仪表功能分类LWQ系列气体涡轮流量计可分为3大类,即:□气体涡轮流量传感器/变送器□智能壹体化气体涡轮流量计□智能温压补偿壹体化气体涡轮流量计2.功能说明■气体涡轮流量传感器/变送器该类涡轮流量产品本身不具备现场显示功能,仅将流量信号远传输出。

LW系列涡轮流量仪表产品使用说明书

LW系列涡轮流量仪表产品使用说明书

LW系列涡轮流量仪表产品使用说明书目录一、概述 (2)二、 LWBY型液体涡轮流量传感器 (2)三、LWBY型液体涡轮流量变送器 (8)四、LWBY型现场显示涡轮流量计 (9)五、运输、贮存 (11)六、开箱及检查 (11)七、订货须知 (11)八、常见故障和排除 (12)LW系列涡轮流量仪表一、概述LW系列涡轮流量仪表包括LWGY型液体涡轮流量传感器、LWBY型液体涡轮流量变送器和LWSY型现场显示涡轮流量计等,属于速度式流量仪表。

本系列仪表适用于清洁或基本清洁的单项液体的测量,单独或相关设备配套,可用来测量封闭管道中的体积流量或总量。

具有结构简单、轻巧、精确度高、复现性好、反应灵敏、安装维护使用方便等特点,广泛应用于石油、化工、供水、食品、制药及科研试验等行业,是流量计量和节能的理想仪表。

二、LWGY型液体涡轮流量传感器LWGY型液体涡轮流量传感器是LW系列涡轮流量仪表中的基本产品,它将管道中液体的流量转换成电脉冲信号、并经过显示仪表或计算机系统处理来完成对管道中液体流量的测量或总量计量。

1结构特征与工作原理1.1结构特征:传感器主要有传感组件、信号检测器和放大器组成,(见图1)。

其轴承系统为硬质合金,提高耐磨性、保证产品精度;其中:放大器分两线制和三线制两处形式。

1.2工作原理当流体流经仪表时,推动表内叶轮旋转,然后通过叶轮与信号检测器之间的磁耦合,将流体的流速转换为电脉冲信号输出,通过放大器放大整形并传输给显示仪表,即达到对流体的体积流量或总量的测量目的。

在一定的流量范围内,脉冲频率f与流经传感器的液体的体积流量Q成正比。

流量方程式为:Q=f/K式中:f—脉冲频率K—传感器的仪表系数【1/L】由“校验单”给出。

2.基本参数及性能标准2.1本传感器执行专业标准(JB/T9246-1999涡轮流量传感器)2.3 使用环境:环境温度 -20~+55℃相对温度 5%~95%大气压力 86~106Kpa2.4被测流体温度普通型 -20~+120℃防爆型 -20~70℃2.5 防爆标志:dⅡBT52.6 输入信号:两线制输出输出低电平I≈3mAOL≈13mA(方波)输出高电平IOH负载电阻R(包括线路阻抗)在100~500Ω范围内(根据所配置的显示仪表或其它接收装置输入信号的要求,选择合适的R值.)三线制输出:V≥5V (方波)OP-P2.7电源供电两线制:+24VDC三线制:+12VDC~+24VDC2.8传输距离:1Km3.连接结构及尺寸:3.1 螺纹连接结构见图2,连接尺寸见表23.2 法兰连接结构见图3,连接尺寸见表2法兰结构及尺寸执行(JB79-59,JB81-59,JB82-59)标准.4.安装通常情况下传感器应为水平安装,正常的管线配置如图41.入口2.阀门3.过滤器4.消气器5.整流器6.涡轮流量传感器7.后直管段8.旁通管段图4 系统配置图图中各部分的作用分述如下:消失器:用来消除流体中的游离气体,避免游离气体占有的体积造成测量误差。

LWGY涡轮流量计 使用说明书

LWGY涡轮流量计 使用说明书

LWGY系列涡轮流量计使用说明书lnstruction Manual目录LWGY系列涡轮流量计说明书(1-14)一、概述 (2)二、产品特点 (2)三、工作原理 (2)四、主要技术参数………………………………………………3-4五、外形尺寸……………………………………………………4-6六、安装要求……………………………………………………6-7七、使用要求……………………………………………………7-8八、LWGYA型涡轮流量传感器介绍 (8)九、LWGYB型涡轮流量计介绍 (9)十、LWGYC型涡轮流量计介绍 (9)十一、LWGYD型涡轮流量变送器介绍..............................10-11 十二、LL-05型智能流量积算器操作说明........................12-14 十三、维修和常见故障 (15)十四、运输、储存 (15)十五、开箱注意事项 (16)十六、订货须知 (16)十七、使用期限 (16)插入式流量计说明书(15-27)一、概述 (17)二、产品特点 (18)三、原理及基本公式 (18)四、主要参数……………………………………………………18-20五、结构及各零件名称(B型)…………………………………20-23六、确定传感器仪表系数KDS的方法…………………………23-24七、维修 (24)八、配套显示仪表………………………………………………24-28九、一般故障及排除方法………………………………………28-30十、保修 (30)一、概述LWGY 涡轮流量计是本厂采用国外先进技术生产制造的,是液体计量最理想的流量计之一。

它具有结构简单、精确度高、安装维修使用方便等特点。

该产品广泛用于石油、化工、冶金、供水、造纸、环保、食品等领域,可靠测量水、纯水、自来水、无杂质的污水、柴油、汽油和低粘度的原油等液体的体积流量。

与具有定量功能的显示仪表配套使用,可以进行自动定量控制、上下限报警等用途。

英文版气体涡轮流量计说明书0501

英文版气体涡轮流量计说明书0501

LWGQ Gas turbine flowmeter使用说明书湖北南控仪表科技有限公司(鄂H制00000124号)1.The generalizabilityLWGQ series gas turbine flowmeter is learned the flow meter at home and abroad advanced technology optimized design, the comprehensive gas mechanics, fluid mechanics, electromagnetism theory by itself to set temperature, pressure, flow sensor is developed and in the integration of intelligent flow totalizer.especially for a new generation of high precision, high reliability gas precision measuring instrument, has a good performance of low pressure and high pressure measurement, multiple way signal output and low sensitivity to the fluid disturbance, is widely used in natural gas, coal gas, liquefied gas and light hydrocarbon gas and gas metering.According to the product by the national anti-explosive products quality inspection department GB3836.2000 the explosive gas environment with electrical equipment part 1: general requirements ", GB3836.2-2000 "explosive gas environment with electrical equipment part 2: flameproof" d ", "and GB3836.4-2000" explosive gas environment with electrical equipment part 4: "I" intrinsically safe "standard inspection, explosion-proof marks for Exd ⅡBT6 (flameproof), Exia ⅡCT6 (Ann). Applicable to contain A and B ⅡⅡ, ⅡC T1 ~ T4 explosive gas mixture temperature classes 0 (only this type) 1, 2, area for the dangerous sites.2.Product features⏹High quality alloy turbine, have higher steady flow and corrosion effect⏹Imported high quality bearing, long service life⏹Measuring room from ventilation chamber, guarantee the safety of the instrument⏹Can be detected by measuring the temperature, pressure, and flow of the gas, can flow automatic trackingcompensation, and displays a standard condition (Pb = 101.325 KPa, Tb = 101.325 K) of gas volume cumulant; Can be real-time query temperature and pressure values⏹Wide range of flow rate (Q max/Q min≥20:1), good repeatability, high precision (up to 1.0), small pressure loss,initiating flow rate is low, can reach 0.6m3/h⏹Intelligent instrument coefficient more nonlinear correction⏹Built-in pressure, temperature sensors, high safety performance, compact structure, beautiful shape⏹Instruments with explosion protection and protective functions, marks for Exd ⅡBT6, Exia ⅡCT6, protectiongrade reaches IP65⏹System low power consumption, section 3.2 V10AH lithium batteries can be use more than 3 years in a row⏹Instrument coefficient, the cumulative flow value power lost decade is not lost3. The working principle ofWhen the fluid flows into the flow of time, under the action of air inlet special-purpose integrated rectifier rectifier and accelerate, due to the turbine blades and the direction of flow at an Angle, the turbine rotational torque, after overcoming friction torque and fluid resistance moment, the turbine to spin. Within the scope of a certain flow, turbine rotating angular velocity is proportional to the fluid volume flow. According to the principle of electromagnetic induction, the use of magnetic sensor signal from coaxial rotation during induction out with fluid volume flow is proportional to the pulse signal, the signal after amplification, filtering, plastic with temperature and pressure sensor signal into micro processing unit of intelligent flow totalizer.especially for processing, and the volume of a gas flow rate and total directly display on the LCD screen.4.Technical parameters:4.1 The basic parameters:4.1.1Table 1specifications Nominal diameter(mm)Flow range(m3/h)Pick up traffic(m3/h)Pressure of work(MPa)Type of installationLWGQ-25 25 (1") 2.5-25 0.6 4.0 Flange (thread)LWGQ-40 40(1.5")5-50 0.8 4.0 Flange (thread)LWGQ-50 50(2")10-100 1 4.0 FlangeLWGQ-80 80(3")20-400 2.5 1.6 FlangeLWGQ-100 100(4") 32-650 2.5 1.6 FlangeLWGQ-150 150(6")50-1000 4 1.6 FlangeLWGQ-200 200(8")130-2500 8 1.6 FlangeLWGQ-250 250(10")200-4000 12 1.6 FlangeLWGQ-300 300(12") 320-6500 16 1.6 Flange4.1.2 Level of accuracy: 1.0, 1.54.1.3Conditions of use:◆The environment temperature:-30℃~+60℃;◆The atmospheric pressure:86KPa~106KPa;◆Medium temperature:-30℃~+80℃;◆Relative humidity:5%~95%4.2Electrical performance indicators:Table 2specifications Display and output Power supply LWGQ- N Low voltage pulse level 1 v or less, high level 5 v, or three wire system External power DC12V-24VLWGQ-A (4 ~ 20 mA) standard linear analog signal corresponds to (0 ~ Qmax) m3 / h standardvolume flow, two wire systemExternal power DC24VLWGQ-B With multipoint correction precision, at the same time show the instantaneous flow andcumulative flow double row liquid crystal display (LCD), as follows:Q XXXX Four instantaneous flow rate(m3/h)XXXXXXXX Eight cumulative flow(m3)Note: the total flow rate since 00.000000 counting, automatic expanding display precision,maximum down to 999999.99. Accumulative total flow rate value can be zero, instrumentcoefficient, the cumulative flow value power lost decade is not lost.3.2 V10AH lithium batteriesLWGQ-C In LWGQ - B (the scene display type) on the basis of adding 4-20 madc current output External power DC24VLWGQ-D In LWGQ - B (the scene display type) with temperature and pressure sensors, flow forautomatic compensation correction arithmetic for different condition. Can query, such astemperature, pressure, battery at the same time. Can output high frequency, low frequencyvoltage pulse signal, and 4-20 madc two wire current signal.3.2 V10AH lithium battery orDC24V power supply4.3Model system:Table 3Model Explain LWGQ □□□Meter Type N Basic, pulse outputA Current output typeB The display typeC Display output type (scene shows + current output)D Temperature, pressure compensation typeMeter diameter25 25mm 40 40mm 50 50mm 65 65mm 80 80mm 100 100mm 150 150mm 200 200mm 250 250mm 300 300mmSensor material NBasic material, high quality aluminum alloy. (the highest pressure: 1.0MPa)S Stainless steel material. (high pressure anti-corrosion type)For example, the model is: LWGQ - C - 50 s of the gas turbine flowmeter, said:Meter diameter of 50 mm, display, output way of live shows, output current sensor is made of stainless steel high pressure gas turbine flow meter.5.Overall dimensionsFlow meter appearance is shown in figure 1, the specific sizes are shown in table4Figure 1Note : as shown in figure 1 as temperature pressure compensation type instrument appearance. With all the model instrument sensor part of the machine and high caliber size.Table 4Model Nominaldiameter mm L D H K n d Bolt specification Conventional pressure MPaLWGQ-25 25 150 115 236 85 4 φ14 M12×50 4.0LWGQ-40 40 150 150 266 110 4 φ18 M16×55 LWGQ-50 50 150 165 285 125 4 φ18 M16×60 LWGQ-65 65 240 185 300 145 4 φ18 M16×65 1.6LWGQ-80 80 240 200 319 160 8 φ18 M16×70 LWGQ-100 100 300 220 337 180 8 φ18 M16×80 LWGQ-150 150 450 285 395 240 8 φ22 M20×80LWGQ-200 200 500 340 448 295 12 φ22 M20×90 LWGQ-250 250 500 403 495 355 12 φ26 M24×90 LWGQ-30030050046054841012φ26M24×1006.Selection of flowmeter6.1 When users in the selection, should according to the nominal pipe pressure, medium to high pressure, medium temperature, medium composition, flow range and signal output requires reasonable selection of flowmeter type specification.6.2 In order to make the use of the flowmeter performance is the best, the use of the flowmeter flow range should be within the scope of Qmax (20% ~ 20%) is more appropriate.6.3 Meter factory of signal output mode: working condition of the pulse signal output (three-wire system), the standard traffic signal output or RS - 485 communication (IC) output. If you want have other output function, when ordering, please .6.4 Selection of instanceKnown to the actual working pressure of a gas pipeline pressure) (table 0.8 MPa to 1.2 MPa, mediumtemperature range is 5 ℃ ~ + 40 ℃, the throughput of 3000 ~ 8000 nm3 / h (standard of traffic), without taking into consideration under the condition of gas composition, requirement of the specifications of the flowmeter.Analysis: the description given in table 1 flow range for the working condition of flow range, and in this case theflow range is given in the standard condition flow range, therefore, must according to the gas side Mr. Cheng will flow in the conversion of flow condition, and then choose the appropriate diameter. Gas equation is as follows : 2Z gb bb bF C Q =ZZ T P T P Q =Q······ Type in the :Q b —— Standard of flow ,m 3/h ;Q —— Working condition of traffic ,m 3/h ;C * —— Scaling factor. (look-up table, a table is only for type selection reference when conversion)gbz Z Z =F —— Gas compressibility factor, according to China national petroleum corporation SY/T 6143-1996 standard.The data in table b is for reference only, the data according to the true relative density of natural gas Gr = 0.600, nitrogen and carbon dioxide mole fraction were calculated as 0.00, when the medium pressure below 0.5 MPa, Zb/deal in mid-december, = 1.00 estimate. Calculation ::① when the pressure of the medium low temperature (0.8 MPa), high (+ 40 ℃) when (in the gas peak), should have the biggest case volume flow (can not consider the effect of FZ, model selection of the local atmospheric pressure of 101.325 kPa):Namely 965.472=293.1540+273.15×800+101.325101.325×8000=T T ·P P Q =Q b b maxb max m 3/h Estimation of or use the following formula (type, C * as the conversion factor, check appendix table a):960.38=8.338000=C Q =Q bmax max m 3/h ② Medium pressure was highest (1.2 MPa), the lowest temperature (5 ℃) (in gas trough), should have aminimum standard of volume flow :Namely 213.51=293.155273.15×1200+101.325101.325×3000=Q min m 3/hEstimation of or use the following formula : 214.3=14.03000=C Q =Q bmin min m 3/h Selection :learn from the above estimates that want to choose the flowmeter its working flow range is (213.5 ~ 965.472m3 / h), by table 1 check, choose the meter models for LWGQ - 150.According to the gas equation of scaling factor C * valuesTable aC * P T MPa0.01 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65(℃)-20 1.27 1.70 2.30 2.87 3.34 4.02 4.59 5.16 5.73 6.30 6.87 7.44 8.02 8.59 -15 1.25 1.70 2.26 2.82 3.38 3.94 4.50 5.06 5.62 6.18 6.74 7.30 7.86 8.42 -10 1.22 1.66 2.21 2.76 3.31 3.86 4.41 4.96 5.51 6.60 6.61 7.16 7.71 8.26 -5 1.20 1.63 2.17 2.71 3.25 3.79 4.33 4.87 5.41 5.95 6.49 7.03 7.57 8311 0 1.18 1.60 2.13 2.66 3.19 3.72 4.25 4.78 5.31 5.84 6.37 6.90 7.43 7.96 51.16 1.572.09 2.613.13 3.654.17 4.695.21 5.736.25 6.777.29 7.81 10 1.14 1.55 2.06 2.57 3.08 3.59 4.10 4.61 5.12 5.63 6.14 6.66 7.17 7.68 15 1.12 1.52 2.02 2.52 3.03 3.53 4.03 4.53 5.03 5.54 6.04 6.54 7.04 7.54 20 1.10 1.49 1.99 2.48 2.97 3.47 3.96 4.45 4.95 5.44 5.93 6.43 6.92 7.42 25 1.08 1.47 1.95 2.44 2.92 3.41 3.89 4.38 4.86 5.35 5.84 6.32 6.81 7.29 30 1.06 1.44 1.92 2.40 2.88 3.35 3.83 4.31 4.78 5.26 5.74 6.22 6.69 7.17 35 1.05 1.42 1.89 2.36 2.83 3.30 3.77 4.24 4.71 5.18 5.65 6.12 6.58 7.05 40 1.03 1.40 1.86 2.32 2.78 3.25 3.71 4.17 4.63 5.095.566.02 6.48 6.9445 1.01 1.38 1.83 2.29 2.74 3.19 3.65 4.10 4.56 5.01 5.47 5.92 6.38 6.83 50 1.00 1.35 1.80 2.25 2.70 3.15 3.59 4.04 4.49 4.94 5.38 5.83 6.28 6.73C* T P MPa0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.20 1.40 1.60 2.00 2.50 3.00 4.00(℃) -20 9.16 9.73 10.3 10.9 11.4 12.0 12.6 14.9 17.2 19.4 24.0 29.7 35.4 46.9 -15 8.98 9.54 10.1 10.7 11.2 11.8 12.3 14.6 16.8 19.1 23.6 29.1 34.8 46.0 -10 8.81 9.36 9.91 10.5 11.0 11.6 12.1 14.3 16.5 18.7 23.1 28.6 34.1 45.1 -5 8.65 9.19 9.72 10.3 10.8 11.3 11.9 14.0 16.2 18.4 22.7 28.1 34.5 44.3 0 8.49 9.20 9.55 10.1 10.6 11.1 11.7 13.8 15.9 18.0 22.3 27.6 32.9 43.4 5 8.33 8.86 9.38 9.90 10.4 10.9 11.5 13.5 15.6 17.7 21.9 27.1 32.3 42.1 10 8.19 8.70 9.21 9.72 10.2 10.7 11.3 13.3 15.3 17.4 21.5 26.6 31.7 41.9 15 8.05 8.55 9.05 9.55 10.1 10.6 11.1 13.1 15.1 17.1 21.1 26.1 31.1 41.2 20 7.91 8.40 8.90 9.39 9.88 10.4 10.9 12.8 14.8 16.8 20.7 25.7 30.6 40.5 25 7.78 8.26 8.75 9.23 9.72 10.2 10.7 12.6 14.6 16.5 20.4 25.2 30.6 39.8 30 7.65 8.12 8.60 9.08 9.56 10.0 10.5 12.4 14.3 16.2 20.1 24.8 30.1 39.1 35 7.52 7.99 8.46 8.93 9.40 9.87 10.3 12.2 14.1 16.0 19.7 24.4 29.6 38.5 40 7.40 7.87 8.33 8.79 9.25 9.71 10.3 12.0 13.9 15.7 19.4 24.0 29.1 37.9 45 7.29 7.47 8.20 8.65 9.11 9.56 10.3 11.8 13.7 15.5 19.1 23.7 28.6 37.3 50 7.17 7.62 8.07 8.52 8.96 9.11 9.86 11.7 13.4 15.2 18.8 23.3 27.8 36.7Note::1.The value in the table to the local atmospheric pressure of 101.325 KPa to calculate;2.Pressure for the tableFz values of gas compressibility factorTable a tFz ℃)P(M P a)-20 -15 -10 -5 0 5 10 15 20 250.50 1.0088 1.0083 1.0078 1.0073 1.0069 1.0065 1.0061 1.0058 1.0054 1.00511.00 1.0180 1.0169 1.0159 1.0149 1.0140 1.0132 1.0124 1.0117 1.0110 1.01031.50 1.0276 1.0258 1.0242 1.0227 1.0213 1.0200 1.0188 1.0176 1.0166 1.01562.00 1.0375 1.0351 1.0328 1.0307 1.0287 1.0269 1.0252 1.0237 1.0222 1.02092.50 1.0479 1.0446 1.0416 1.0389 1.0363 1.0340 1.0318 1.0298 1.0280 1.02633.00 1.0587 1.0546 1.0508 1.0473 1.0441 1.0412 1.0385 1.0360 1.0337 1.03163.50 1.0700 1.0649 1.0602 1.0560 1.0521 1.0485 1.0453 1.0423 1.0396 1.03704.00 1.0818 1.0756 1.0699 1.0648 1.0602 1.0506 1.0521 1.0486 1.0454 1.04254.50 1.0941 1.0866 1.0799 1.0739 1.0685 1.0635 1.0591 1.0550 1.0513 1.04795.00 1.1069 1.0980 1.0902 1.0831 1.0768 1.0712 1.0660 1.0614 1.0571 1.05335.50 1.1201 1.1089 1.1006 1.0926 1.0853 1.0789 1.0730 1.0678 1.0630 1.05876.00 1.0339 1.1218 1.1113 1.1021 1.0939 1.0866 1.0800 1.0741 1.0688 1.06406.50 1.0480 1.1342 1.1222 1.1117 1.1025 1.0943 1.0870 1.0805 1.0746 1.06937.00 1.1624 1.1467 1.1332 1.1214 1.1111 1.1020 1.0943 1.0867 1.0803 1.07457.50 1.1770 1.1593 1.1442 1.1311 1.1197 1.1097 1.1008 1.0929 1.0859 1.07968.00 1.1917 1.1719 1.1551 1.1407 1.1282 1.1172 1.1075 1.0990 1.0913 1.08457.Install and use7.1 The installation of the flowmeter • Before installation, the pipe must purge clean to prevent residual iron affect the normal operation of flowmeter. •Before installation, the use of tiny air blows the turbine, the turbine can flexible rotation, no random noise, counter rotating is normal, uninterrupted card lag phenomenon, the flowmeter can be used to install. • Flow meter in the middle of the flange and pipe flanges to add sealing washer.•Meter shall be equipped with filters, temperament is dirty places should be equipped with oil filter, before you place an order, can order to me at the same time, it is strictly prohibited to filter and flowmeter directly connected. • Meter shall be added by the valve before, during, and after installation. • Flange joint pipe Canon place there should be no protrusions.•Flow meter installed, it is strictly prohibited in the import and export directly for welding flange, so as not to burn out flowmeter internal parts. •Meter should be installed in easy maintenance, strong electromagnetic interference and mechanical vibration and thermal radiation effects ; •Flowmeter is unfavorable with frequent interruptions in the flow and strong pulsation flow or pressure pulsation of the occasion ; •Flow meter outdoor installation, should be the upper cover, to prevent rain water immersion and strong sunlight affect the service life of the meter ; •Flow meter can be installed in horizontal or vertical, the fluid flow direction should be consistent with the direction of the logo on the shell, should guarantee the upstream of the flow meter is not less than 10 dn straight pipe, after the table is not less than 5 dn straight pipe. •In order not to affect the normal fluid transportation, it is suggested that according to the figure 2 by-pass pipe installation, must close the by-pass pipe valve when normal use.tFz ℃)P (M P a )30 35 40 45 50 55 60 65 70 75 0.50 1.00481.0046 1.0043 1.0041 1.0039 1.0036 1.0034 1.0032 1.0031 1.0029 1.00 1.0097 1.0092 1.0087 1.0082 1.0077 1.0073 1.0069 1.0065 1.0061 1.0058 1.50 1.0147 1.0138 1.0130 1.0123 1.0116 1.0109 1.0103 1.0097 1.0091 1.00862.00 1.0197 1.0185 1.0174 1.0164 1.0154 1.0145 1.0137 1.0129 1.0121 1.0114 2.50 1.0247 1.0231 1.0217 1.0204 1.0192 1.0181 1.0170 1.0160 1.0151 1.01423.00 1.0297 1.0278 1.0261 1.0245 1.0230 1.0216 1.0203 1.0191 1.0180 1.0169 3.50 1.0347 1.0325 1.0305 1.0286 1.0268 1.0252 1.0236 1.0222 1.0208 1.01964.00 1.0397 1.0372 1.0348 1.0326 1.0305 1.0286 1.0269 1.0252 1.0236 1.0222 4.50 1.0447 1.0418 1.0391 1.0366 1.0343 1.0321 1.0301 1.0282 1.0264 1.02475.00 1.0497 1.0464 1.0434 1.0405 1.0379 1.0355 1.0332 1.0311 1.0291 1.0272 5.50 1.0547 1.0510 1.0476 1.0444 1.0415 1.0388 1.0363 1.0339 1.0317 1.02976.00 1.0596 1.0555 1.0517 1.0483 1.0450 1.0420 1.0393 1.0367 1.0343 1.0320 6.50 1.0644 1.0599 1.0558 1.0520 1.0485 1.0452 1.0422 1.0394 1.0368 1.03437.00 1.0692 1.0643 1.0598 1.0557 1.0519 1.0483 1.0451 1.0420 1.0392 1.0365 7.50 1.0738 1.0686 1.0637 1.0593 1.0552 1.0514 1.0478 1.0446 1.0415 1.03878.001.07481.07271.06751.06271.05831.05431.05051.04701.04381.0407旁通管线前直管段≥10D N流量计过滤器气流入口后直管段≥5D N 图2 旁通管道安装图•In pipeline construction, should consider to install the expansion pipe or bellows, lest cause serious tension or the flowmeter ;• Should ensure that pipe connected to the flow meter of the entry and exit coaxial, and prevent the washer and weld, into the pipe or you will disrupt the flow profile ;• When external power is adopted, the meter must be reliable grounding, but not with the high voltage system common ground; Pipeline installation or maintenance may, at the time of the ground and flowmeter lap welding system ;• Pipeline installation of sealing pressure testing, flowmeter pressure sensor should be paid attention to are the highest pressure (that is, the maximum pressure of medium) on the calibration certificate, so as not to damage the pressure sensor.7.2 The use of the flowmeter 7.2.1 Matters needing attention •The maximum leakage pressure in low pressure table :≤1.0Mpa ,t emperature pressure compensation type leakage pressure no more than three times the upper limit value of the pressure sensor. High pressure casing according to 1.2 times the rated flow pressure leak detection. •After installation leak test and installation shall comply with the following rules : ① Turn off gas valve and the inlet valve.② Slightly open vent valve, and then slowly open the inlet valve, make the table start slowly, then slowly open the vent valve, make the reach normal operation state, to prevent sudden start, damage to the core.③ At the time of stopping air, need to close the vent valve, then close the inlet valve, each time you start all should abide by the rules.•Flow meter installed after use, not to touch the bolt, screw, nut fasteners, such as to avoid danger such as leakage, damage.•Flow meter movement (temperament clean) should be once every six months for cleaning maintenance;(temperament is dirtier) should be cleaning maintenance once a month.•If the movement after breakdown maintenance, to be put into use, sealing test should be carried out according to the maximum pressure first. And to the oil in the note number T4 precision instrument movement or transformer oil. 7.2.1 LWGQ(basic) wiring instructions:V + red line, green line for power V -, yellow line as the signal wire, metal wire is shielded wire.7.2.2 LWGQ-A (type) output current: two wire output current;7.2.3LWGQ-B\Ctype gas turbine operating instructions1、Panel displayOn the instantaneous flow, discharge cumulative flow; "Settings" indicating instrument SettingsThe top right corner there is hidden dry reed pipe is used to reset the cumulative flow, the function can be through the parameter configuration2、Parameter tablesymbol name Value range address noteoA 0~9999 100(H) Note 1 passwordParameters of group 1 (password by "code" : menu password)symbol name Value range The default value address note in-d 0~4 3 :0000.0 110(H) Note 2 The instantaneous flow decimal point positionP-d 0~4 4 :00000. 111(H) Note 2 The flow coefficient of the decimal point positionPLuA 60~99999 360 112(H)A number of pulse flow metering unitF-H 0~1 1 113(H) Note 3 The instantaneous flow metering unit of timeFLtr 1~20 1 114(H) Note 4 Digital filtering time constantcHo 0~99999 50 115(H)Small signal thresholdin-A -999.99~999.99 unit:Hz 116(H)Zero valueFi 0.0001~9.9999 1.0000 117(H)Full revised(Not to take effect)c-b 0:oFF∕1:on 0:OFF 118(H) Note 5 Line function to chooseParameters in group 2 (password by "code" : menu password)symbol name value range the default value address note cLr1 0:oFF∕1:on 1 :ON 120(H) Note 8“▼”key manually resetcLr2 0:oFF∕1:on 1 :ON 121(H) Note 8 Dry reed pipe manually resetcodE 0~9999 1111 122(H) Note 1 Menu passwordLov 0~99999999 0 123(H)Initial value(Not to take effect)Group 3 parameters (password by "code" : menu password)symbol name value range address note Line 1 point measurements0~99999 130(H)Line 1 point measurements0~99999 131(H)Line 2 point measurements0~99999 132(H)Line 3 point measurements0~99999 133(H)Line 3 point measurements0~99999 134(H)Line 4 point measurements0~99999 135(H)Line 4point measurements0~99999 136(H)Line 5 point measurements0~99999 137(H)Line 5 point measurements0~99999 138(H)Line 6 point measurements0~99999 139(H)Line 6point measurements0~99999 13A(H)Line 6 point measurements0~99999 13B(H)Line 7 point measurements0~99999 13C(H)Line 7point measurements0~99999 13D(H)Line 8point measurements0~99999 13E(H)Line 8point measurements0~99999 13F(H)Note 1: password is set with level 1 menu password parameters "code" is the same, can enter each parameter Settings; See the back of the instructions detailed setting method.Note 2: 0 ~ 4 sequence corresponds to:0.0000,00.000,000.00,0000.0,00000.Note 3: 0, 1, respectively: l/m ,m3/hNote 4: used to overcome the signal showed fluctuations caused by unstable, the larger the value set, the stronger the effect, but the slower reflect to the change of the input signal.Note 5:0 (OFF) : close polyline correction; 1 (on) : use line correctionNote 6: only when c - b set to on, can enter line correction parameter setNote7: 0 (OFF) : banned manual reset; 1 (on) : allow manual reset3、Parameter Settings:(in-d)――The instantaneous flow decimal point location selectionAccording to the sensor maximum range to choose from(P-d),(PLuA)――According to the maximum range of the sensor, determine the instantaneous flow instrument showsbottom represent flow value, namely a flow measurement units. Again according to the average flow coefficient, to determine a flow unit of measurement of the pulse number.(F-H)――The instantaneous flow metering unit of timeCan respectively by the hour, minute and unit for cumulative rise, cubic meters,mutual collocation,、closelyrelated with, parameter Settings(FLtr)――Digital filtering time constantUsed to overcome the signal showed fluctuations caused by unstable, the larger the value set, the stronger the effect, but the slower reflect to the change of the input signal.(cHo)――Small signal threshold, the factory is set to 0If the instantaneous flow rate is less than the threshold value, then press 0 processing(in-A)――Zero value, factory Settings is commonly 0(Fi)――Full revised, factory Settings is 1.0000Through zero with revised correction instrument sampling, (of the input pulse meter rarely use this parameter), in which the parameters of "Fi" not to take effect(Lov)――Initial valueCumulative flow after reset or exceed the limit that the starting value, it is not effective4、8Section line operation functionWhen due to the nonlinear error of flow sensor, measurement accuracy can not meet the requirement of the application, can consider to use the 8 section of line operation function of instrument.Will instrument group 1 parameter in parameter is set to 1,open the function of line operation, 8 period ofline of value by ~ 、 and ~ this 16 parameters setting,Sensor data table usually has two forms, one kind is the instantaneous flow rate and frequency table, can be used directly. Another kind is the instantaneous flow and flow coefficient table, need to flow in the conversion coefficient of frequency, such as the flow coefficient of the 20 m3 / h when 17810 pulses/frequency of 20 x 17810÷3600 = 98.94 Hz~ :Said from low to high frequency values of each point~ :Said with ~ various frequency values corresponding to the instantaneous flow valuesFrequency values of the decimal point position set by parameters of group 1, should pay attention to theinstantaneous flow values measuring unit of time should be consistent with the parameter selection of5、The number of unit impulse SettingsPulse output flow sensor generally provides maximum range and the average flow coefficient, flow and the flow coefficient under different flow rate or the corresponding pulse frequency. Due to the nonlinear sensor has certain, when high precision required, 8 section polyline function available instrument.When using the instrument of 8 section polyline function, has nothing to do with,parameters.8 of general application, do not use the instrument line function, according to the maximum range and the average flow coefficient and parameters.First of all, based on maximum range, determine the instantaneous flow instrument shows bottom represent flow value, namely a flow measurement units. Again according to the average flow rate coefficient, to determine a flow unit of measurement of the pulse number.Example: the flow sensor range from 0.1 to 0.1 m3 / h, flow coefficient for an average of 19932 pulses/m3Instrument the instantaneous flow rate by ☐.☐☐☐m3∕h according to the flow metering unit 1 is 0.001 m3, corresponding to the pulse number is 19932×0.001=19.93≈19.93 Should be set= 00.00, = 19.936、The key that NameExplainThe measured value display window• Liquid crystal display various instrument information The operation key Set the button●• Measurement mode, press enter setup state•Settings, press, according to the code into the correspondingparameter set or return to the measurement stateleft-click◄• Invalid measurement condition• Settings, press into the current state parameter changes • Modify current parameters change state ,Mobile changes Identify buttonMOD• Invalid measurement condition• Set state, the order to choose the other parameters•The current parameter modification conditions, deposited in themodified parameter valueIncrease the button▲• Invalid measurement condition• Current parameter modification condition, increase the type parametervalues or change SettingsReduce the button▼•Measurement condition, the total flow rate reset (related to theparameters)•Current parameter modification condition, reduce the type parameter values or change Settings7、Parameter setup instructions Password method① Press ● key, enter setup status, the line shows②Press ◄ enter a state of parameter modification,in ▲ button 、 ▼ button 、 ◄ button Cooperation will discharge the password value is amended as "level 1 menu password" or "secondary menu password" parameter values ③Press the MOD button, the password set up, right into the corresponding menu groups ★ Password when the power on the instrument will be reset automatically 8、Parameter setting method① Prior to set the parameters according to the above method to set the password, the password is set correctly, the instrument will enter the corresponding menu groups② Press the MOD order select need to set parameters, display parameters on the symbol, discharge shows the current parameter values③ Press ◄ enter a state of parameter modification, flashing for modification④ Move through the ◄ key changes, ▲ button 、 ▲ button 、Increase or decrease in value, the parameter is modified to desired values⑤ Press MOD keys, deposited in the modified parameter values, and go to the next parameter Repeat step ② ~ ⑤,the other parameters can be set up this groupEnter the Settings for 1 minute without key, the instrument will automatically return to the state of measurement and password reset To exit setup:In the condition of setting, press ● key until the return to measuring condition。

智能气体涡轮流量计 使用说明书

智能气体涡轮流量计 使用说明书

智能气体涡轮流量计使用说明书目录一、概述 (1)二、主要特征 (1)三、技术性能 (1)四、选型与安装 (3)五、安装注意事项 (7)注意!●安装使用前,请仔细阅读本说明书理解各项内容,以便能正确的安装、电路连接、运行操作和保养维护等。

●本说明书应保存在实际最终使用人的手中。

●本说明书保存到流量计报废为止。

●本产品技术规范可能发生变化,恕不另行通知。

一、概述LWQ型气体涡轮流量计是一种精确测量气体流量的速度式流量仪表,具有结构简单轻巧、计量精度高、重复性好、测量范围宽、安装维修方便等优点。

广泛应用于石油、化工、冶金、航空、科研等部门及工业领域中多种气体,如天然气、城市煤气、丙烷、丁烷、空气、氮气等气体的测量。

由于仪表精度高、重复性好,故适用于贸易计量及工业过程检测。

气体涡轮流量计在线测量时,其介质密度随温度和压力变化而变化,为精确测量,必须同时跟踪检测介质的温度和压力,并将不同工况下的体积流量换算成标准状态或约定状态下的体积流量。

由于该型流量计集温度、压力、流量传感器于一体,在线跟踪检测介质温度和压力并进行自动补偿、压缩因子修正运算,因此具有优良的低压和高压计量性能,特别适用于各种单相气体的测量,如天然气等气体的精确计量。

根据用户的不同要求,共公司客提供不同精度等级的涡轮流量计。

二、主要特征a)精度高、重复性好、压力损失小、抗震性能好;b)采用优质轴承,摩擦阻力小,密封性好,手名称;c)集微处理器、流量传感器、高精度温度、压力传感器于一体,直接测量被测气体的流量、温度、压力,并自动进行流量跟踪补偿和压缩因子修正运算;d)仪表具有脉冲信号、模拟信号输出,可通过RS485通讯接口或采用GPRS系统,直接实现计算机数据的集中采集和实时管理;e)功耗低,可用内电池供电,也可外接电源;f)具有实时数据存储功能,可防止更换电池或突然掉电时数据丢失,在停电状态下,内部数据可永久保存;g)可与IC卡预付费系统配套使用,便于贸易结算;h)防爆产品其防爆标志位ExibIIBT4,ExibIIBT6三、技术性能3.1执行标准GB/T18940-2003《封闭管道中气体流量的测量涡轮流量计》3.2精度等级1.0级:Qmax-0.2max±1.0%0.2Qmax-min±2.0%1.5级:Qmax-0.2max±1.5%0.2Qmax-min±3.0%未特殊注明产品,按照1.5级精度出厂,其余精度,订货时,需要特殊说明定制。

LWQ气体涡轮流量计说明书

LWQ气体涡轮流量计说明书

1.概述LWQ系列气体涡轮流量计是吸取了国内外流量仪表先进技术经过优化设计,综合了气体力学、流体力学、电磁学等理论而自行研制开发的集温度、压力、流量传感器和智能流量积算仪于一体的新一代高精度、高可靠性的气体精密计量仪表,具有出色的低压和高压计量性能,多种信号输出方式以及对流体扰动的低敏感性,广泛适用于天然气、煤制气、液化气、轻烃气等气体的计量。

该产品经国家防爆产品质检部门按GB3836.2000《爆炸性气体环境用电气设备第1部:通用要求》,GB3836.2-2000《爆炸性气体环境用电气设备第2部分:隔爆型“d”》和GB3836.4-2000《爆炸性气体环境用电气设备第4部分:本质安全型“i”》标准检验合格,防爆标志为ExdⅡBT6(隔爆型)、ExiaⅡCT6(本安型)。

适用于含有ⅡA、ⅡB、ⅡC类T1~T4温度组别爆炸性气体混合物的0(仅本安型)1、2区危险场所。

2.产品特点⏹优质合金涡轮,具有更高的稳流和耐腐蚀作用⏹进口优质专用轴承,使用寿命长⏹计量室与通气室隔绝,保证了仪表的安全性⏹可检测被测气体的温度、压力和流量,能进行流量自动跟踪补偿,并显示标准状态下(P b=101.325KPa,T b=293.15K)的气体体积累积量;可实时查询温度压力数值⏹流量范围宽(Q max/Q min≥20:1),重复性好,精度高(可达1.0级),压力损失小,始动流量低,可达0.6m3/h ⏹智能化仪表系数多点非线性修正⏹内置式压力、温度传感器,安全性能高、结构紧凑、外形美观⏹仪表具有防爆及防护功能,防爆标志为ExdⅡBT6、ExiaⅡCT6,防护等级为IP65⏹系统低功耗工作,一节3.2V10AH锂电池可连续使用3年以上⏹仪表系数、累计流量值掉电十年不丢3. 工作原理当流体流入流量计时,在进气口专用一体化整流器的作用下得到整流并加速,由于涡轮叶片与流体流向成一定角度,此时涡轮产生转动力矩,在克服摩擦力矩和流体阻力矩后,涡轮开始旋转。

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AK-LWQ系列金湖奥科仪表有限公司气体涡轮流量计说明金湖奥科仪表有限公司1.概述AK-LWQ系列气体涡轮流量计是吸取了国内外流量仪表先进技术经过优化设计,综合了气体力学、流体力学、电磁学等理论而自行研制开发的集温度、压力、流量传感器和智能流量积算仪于一体的新一代高精度、高可靠性的气体精密计量仪表,具有出色的低压和高压计量性能,多种信号输出方式以及对流体扰动的低敏感性,广泛适用于天然气、煤制气、液化气、轻烃气等气体的计量。

该产品经国家防爆产品质检部门按GB3836.2000《爆炸性气体环境用电气设备第1部:通用要求》,GB3836.2-2000《爆炸性气体环境用电气设备第2部分:隔爆型“d”》和GB3836.4-2000《爆炸性气体环境用电气设备第4部分:本质安全型“i”》标准检验合格,防爆标志为ExdⅡBT6(隔爆型)、ExiaⅡCT6(本安型)。

适用于含有ⅡA、ⅡB、ⅡC 类T1~T4温度组别爆炸性气体混合物的0(仅本安型)1、2区危险场所。

2.产品特点⏹优质合金涡轮,具有更高的稳流和耐腐蚀作用⏹进口优质专用轴承,使用寿命长⏹计量室与通气室隔绝,保证了仪表的安全性⏹可检测被测气体的温度、压力和流量,能进行流量自动跟踪补偿,并显示标准状态下(P b=101.325KPa,T b=293.15K)的气体体积累积量;可实时查询温度压力数值⏹流量范围宽(Q max/Q min≥20:1),重复性好,精度高(可达1.0级),压力损失小,始动流量低,可达0.6m3/h⏹智能化仪表系数多点非线性修正⏹内置式压力、温度传感器,安全性能高、结构紧凑、外形美观⏹仪表具有防爆及防护功能,防爆标志为ExdⅡBT6、ExiaⅡCT6,防护等级为IP65⏹系统低功耗工作,一节3.2V10AH锂电池可连续使用3年以上⏹仪表系数、累计流量值掉电十年不丢3. 工作原理当流体流入流量计时,在进气口专用一体化整流器的作用下得到整流并加速,由于涡轮叶片与流体流向成一定角度,此时涡轮产生转动力矩,在克服摩擦力矩和流体阻力矩后,涡轮开始旋转。

在一定的流量范围内,涡轮旋转的角速度与流体体积流量成正比。

根据电磁感应原理,利用磁敏传感器从同轴转动的信号轮上感应出与流体体积流量成正比的脉冲信号,该信号经放大、滤波、整形后与温度、压力传感器信号一起进入智能流量积算仪的微处理单元进行运算处理,并把气体的体积流量和总量直接显示于LCD屏上4.技术参数:4.1 基本参数:4.1.1表14.1.2 精度等级:1.0级、1.5级 4.1.3 使用条件:◆ 环境温度:-30℃~+60℃; ◆ 大气压力:86KPa ~106KPa ; ◆ 介质温度:-30℃~+80℃; ◆ 相对湿度:5%~95%4.2 电气性能指标:表24.3 表3仪表口径为50mm ,显示、输出方式为现场显示加电流输出,传感器材质为不锈钢的高压气体涡轮流量计。

5.外形尺寸流量计外形如图1所示,具体尺寸见表4图1注:图1所示为温压补偿型仪表外形。

同口径所有型号仪表传感器部分以及整机高度尺寸一致。

表46.流量计的选型6.1 用户在选型时,应根据管道公称压力、介质最高压力、介质温度、介质组分情况、流量范围及信号输出要求合理选择流量计的型号规格。

6.2 为使流量计的使用性能最佳,流量计的使用流量范围应在(20%~80%)Q max 范围内比较合适。

6.3 流量计出厂时的信号输出方式:工况脉冲信号输出(三线制)、标准流量信号(IC 卡)输出或RS-485通讯输出。

若要求有其它输出功能,请在订货时说明。

6.4 选型实例已知某一供气管线的实际工作压力为(表压)0.8MPa ~1.2MPa ,介质温度范围为-5℃~+40℃,供气量为3000~8000Nm 3/h(标况流量),在不考虑天然气组分的情况下,要求确定流量计的规格型号。

分析:说明书表1中给出的流量范围为工况流量范围,而本例中给出的流量范围是标况流量范围,因此,必须 根据气态方程先将标况流量换算成工况流量,然后再选择合适的口径。

气态方程式如下: 2Z gb b b bF C Q =Z Z T P T P Q =Q······式中:Q b —— 标况流量,m 3/h ; Q —— 工况流量,m 3/h ;C * —— 换算系数;(查表a ,表中数据仅供选型换算时参考) gbz Z Z =F —— 气体压缩因子,按中国石油天然气总公司SY/T 6143-1996标准计算。

表b 中的数据仅供参考,其数据按天然气的真实相对密度Gr=0.600,氮气和二氧化碳摩尔分数均为0.00计算所得,当介质压力低于0.5MPa 时,均可按Z b /Z g =1.00估算。

计算:① 当介质压力最低(0.8MPa )、温度最高(+40℃)时(处于供气峰期),应具有最大标况体积流量(选型时可暂不考虑F Z 的影响,当地大气压取101.325kPa ):即 965.472=293.1540+273.15×800+101.325101.325×8000=T T ·P P Q =Q b b maxb max m 3/h 或用下列公式进行估算 (式中, C *为换算系数,查附录表a):960.38=8.338000=C Q =Q bmax max m 3/h ② 介质压力最高(1.2MPa )、温度最低(-5℃)时(处于供气低谷),应具有最小标况体积流量: 即 213.51=293.155273.15×1200+101.325101.325×3000=Q min m 3/h或用下列公式进行估算: 214.3=14.03000=C Q =Q bmin min m 3/h 选型:从以上估算结果得知,要选择的流量计其工况流量范围为(213.5~965.472 )m 3/h,由表1查得,应选流量计型号为LWQ-150。

按气态方程计算的换算系数C值*注: 1. 表中数值以当地大气压为101.325KPa进行计算;2.压力为表压力气体压缩因子Fz值表b7.安装与使用7.1 流量计的安装•安装前,管道须吹扫干净,以防残渣铁屑影响流量计的正常运转。

•安装前,用微小气流吹动涡轮时,涡轮能转动灵活,并没有无规则的噪音,计数器转动正常,无间断卡滞现象,则流量计可安装使用。

•流量计安装时法兰和管道法兰中间要加密封垫圈。

•流量计前应加装过滤器,气质较脏的场合应加装油过滤器,用户订货前,可同时向我公司订货,严禁过滤器和流量计直接相连。

•流量计在安装时前后均应加截至阀门。

•法兰盘连接处管道内经处不应该有突起相连接。

•流量计安装时,严禁在其进出口法兰处直接进行电焊,以免烧坏流量计内部零件。

•流量计应安装在便于维修、无强电磁场干扰、无机械振动以及热辐射影响的场所;•流量计不宜用在流量频繁中断和有强烈脉动流或压力脉动的场合;•流量计室外安装时,上部应有遮盖物,以防雨水浸入和烈日曝晒影响流量计使用寿命;•流量计可水平或垂直安装,流体流动方向应与壳体上标识的方向一致,在流量计的上游应保证有不小于10Dn 的直管段,表后不小于5Dn的直管段。

•为了不影响流体正常输送,建议按图2安装旁通管路,在正常使用时必须关闭旁通管道阀门•在管道施工时,应考虑安装伸缩管或波纹管,以免对流量计造成严重的拉伸或断裂;•应确保管道与流量计入口和出口的连接同轴,并防止垫圈和焊缝突入管道内,否则会扰乱流动剖面;•采用外电源时,流量计必须有可靠接地,但不得与强电系统共用地线;在管道安装或检修时,不得把电焊系统的地线与流量计搭接;•管道安装完毕进行密封性试压时,应注意流量计压力传感器所能承受的最高压力(即检定证书上介质最大压力),以免损坏压力传感器。

7.2 流量计的使用7.2.1 注意事项•中低压表最大检漏压力:≤1.0Mpa,温压补偿型检漏压力不超过压力传感器上限值的3倍。

高压表壳按额定流量的1.2倍压力检漏。

•安装后检漏及安装使用中应遵守如下规定:①先关闭出气阀门和进气阀门。

②微微开启出气阀门,再缓慢打开进气阀门,使表缓慢启动,然后再缓慢打开出气阀门,使达到正常运行状态,要防止骤然启动,损坏表芯。

③在停气的时候,需关闭出气阀门,然后再关闭进气阀门,每次启动时均应遵守上述规定。

•流量计安装使用后,不得随意触及螺栓、螺钉及螺母等紧固件,以免发生漏气、损坏等危险。

•流量计机芯(气质干净)应每半年进行清洗维护一次;(气质较脏)应每月进行清洗维护一次。

•如果机芯经分解维修后,重新投入使用,需按最大压力先进行密封试验。

并向机芯内注T4号精密仪表油或变压器油。

7.2.1 LWQ(基本型)接线说明:红色线为V+,绿色线为电源V-,黄色线为信号线,金属线为屏蔽线。

7.2.2 LWQ-A (电流输出型):二线制电流输出;7.2.3 LWQ-B(现场显示型)智能积算仪多点系数修正置数方法(仅限授权工程师操作):打开仪表前盖,按F键,仪表进入置数状态,此时上排首位数字显示“1”,表示此时可设置第一点的仪表系数。

上排的后四位可设置对应点的传感器输出脉冲频率值,下排八位可设置该点的仪表数值。

首先最高位闪烁,按键,该位加1至所需数值,按位移键,闪烁位右移,再用键选择该位数值……,当闪烁位移至最后一位后,按键,可重新置入该参数。

仪表系数格式为XXXXXX.XX。

检查无误后按下F键,仪表进入工作状态,上排显示瞬时流量,下排显示八位累计流量。

在工作状态下,按F键和键,累计总量可清零注:智能型为6点K值修正,温度压力补偿型3点K值修正。

7.2.4 LWQ-C(显示输出型)智能积算仪多点系数修正置数方法(仅限授权工程师操作):开仪表前盖,同时按下F键和键,仪表进入置数状态。

此时上排首位数字为1,其余四位置入此点的传感器频率值,下排可置入此点仪表系数,仪表系数格式为XXXXXX.XX 。

首先最高位闪烁,按键,该位加1至所需数值,按移位键,闪烁位右移,再用键选择该位数值……,当闪烁位移至最后一位后,按键,可重新置入该参数;检查无误后按下F键,可进入下一组系数的设定,上排首位显示2,其余同上;设置完六点仪表系数后,继续按F键,仪表设置第七个参数——满度流量。

此时下排置入20mA对应的流量满度值,比如25mm仪表对应40m3/h,此时就可置入40;设置完参数,检查无误后,再同时按下F键和键则回到工作状态,上排显示瞬时流量,下排显示八位累计流量。

在工作状态下,同时按F键和键,累计总量可清零。

仪表再出厂前均已调整好参数,一般不需要再调。

7.2.5 LWQ-D(温压补偿型)智能积算仪各级参数说明及手操器使用说明7.2.5.1 积算仪显示数据说明7.2.5.2 积算仪内部接线7.2.5.3 智能积算仪可供用户调整各级参数说明参数01:电流输出时的最大流量参数02:脉冲当量1(仪表系数6点修正第一系数值)参数03:分段频率1(仪表系数6点修正第一频率值)参数04:脉冲当量2(仪表系数6点修正第二系数值)参数05:分段频率2(仪表系数6点修正第二频率值)参数06:脉冲当量3(仪表系数6点修正第三系数值)参数07:分段频率3(仪表系数6点修正第三频率值)参数08:脉冲当量4(仪表系数6点修正第四系数值)参数09:分段频率4(仪表系数6点修正第四频率值)参数10:脉冲当量5(仪表系数6点修正第五系数值)参数11:分段频率5(仪表系数6点修正第五频率值)参数12:脉冲当量6(仪表系数6点修正第六系数值)参数13:压力量程上限值参数14:当地大气压参数15:RS485通讯时本地编号参数16:控制字。

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