电站风机安装工艺程序procedure FD Fan

PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 1 of 18 REVISION 0 1TITILEInstallation Procedure of Axial Flow Forced Draft Fan2SCOPE OF APPLICATIONThis procedure is to describe the sequences and requirements for installationaxial flow forced draft fan of PLTU 2 NTB 2 X 25 MW CFSPP Project.3OBJECTIVEThis is to assure that the installations of this equipment are following theClient requirements, codes, and specifications, to obtain good qualityworkmanship during the installation works.4REFERENCE4.14.25FAN INSTALLATION SEQUENCE5.1Foundation survey.5.2Install padding.5.3Base on foundation of air inlet box.5.4Assembly bearing train accessories.•Connect oil pipe.•Install bearing thermometer.•Install temperature controller.5.5Install bearing train assembly to inlet box.5.6Alignment bearing train and inlet box assembly.5.7Grout inlet box anchor bolt.5.8Tightening anchor bolt and re-alignment of bearing train and inlet boxassembly.5.9Temporary install diffuser.5.10Grout diffuser anchor bolt.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 2 of 18 REVISION 0 5.11Secondary grout of diffuser anchor bolt.5.12Dismantle diffuser.5.13Torque anchor bolt and check level ness bearing train.5.14Dimensional check and cleaning hub.5.15Install hub.5.16Install blade.5.17Install hydraulic cylinder hub support cover.5.18Install hydraulic cylinder adjustable value core.5.19Setting of spring position.5.20Install and alignment rotating oil sealing.5.21Install diffuser.5.22Install sealing disc.5.23Install motor.5.24Grouting anchor bolt motor.5.25Connect coupling and alignment motor.5.26Secondary grouting of motor.5.27Secondary grouting of diffuser.5.28Install adjustable pull fork.5.29Install adjustable drive unit.5.30Install hydraulic cabinet.5.31Install soundness test adjustable pull fork.5.32Install and adjustment of adjust disc for blade.5.33Install outlet and inlet flexible connection.5.34General inspection.5.35After the completion of oil circulation of oil station and energize theactuator, adjust and regulate the position of the blade with angleadjustment.5.36Test run.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 3 of 18 REVISION 0 6INSTALLATION FLOW CHARTPLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 4 of 18 REVISION 0PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 5 of 18 REVISION 0PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 6 of 18 REVISION 07FOUNDATION SURVEY7.1Inspection for appearance and configuration7.1.1Visual inspection•Make sure the dried and cure states of concrete.•Make sure the surface is free from crack void, inclusion offoreign matter and others.•Make sure the surface is free from the exposure ofaggregate.•Make sure the outside is smooth and free from defects.7.1.2Dimensional inspectionMake sure and record the dimension on the basis of foundationworking diagram (machine foundation drawing).7.1.2.1Measure and make sure the distance between adjacentfoundations.7.1.2.2Measure and make sure the configuration of an anchorhole;PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 7 of 18 REVISION 0•Configuration of surface.•Depth of hole.•Tilt of hole.•Distance in the horizontal direction to the centreline.7.2Foundation accuracy for receivingPLTU 2 NTB 2 X 25 MWCOAL FIRED STEAM POWER PLANTDOC. NOINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 8 of 18 REVISION 0Item to be Investigated Measuring Point AllowablePositionPLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 9 of 18 REVISION 07.3Confirmation of completion of foundation works7.3.1After the completion of foundation correction by the personswho executed foundation works, measure again. After thecompletion of confirmation, perform the foundation receivingand keep the record with it arranged.7.4Foundation chippingAfter the finishing of foundation centring, set to the chipping of aninstallation surface from the place free from the foundation correctionor the place fast in the installation schedule.The installation surface stated here refers to the surface covered bythe base of an apparatus and the frame-shaped with width of 100 to150 m/ m in the peripheral edge and is within the range of grouting.Chipping refers to the working where concrete surface layer is chippedoff unevenly.7.5Install padding plateInstall padding plate on the foundation surface to obtain levelling baseplate fan as according requirement. The Padding installation refers to“Installation Procedure of Padding Plate for Boiler Auxiliary“.8INSTALLATION OF INLET BOX AND BEARING TRAIN8.1Place the inlet box near the foundation and keep direct touch withland.8.2Conduct cleaning on the bottom surface of mounting and top surfaceof padding on the foundation. Ensure both of surface above free fromrust, paint and others foreign material.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 10 of 18 REVISION 08.3Lift the inlet gearbox and placed on the foundation.8.4Install steel crib as temporary support on the front of the inlet box. Itmust be capable of supporting of the weight of the bearing train. Theheight of the crib should be such as that bearing Tran elevationassembled in the inlet box as according drawing design.8.5Place the bearing train on the steel crib and connect bearing oil pipe,set bearing thermometer, temperature controller and speed sensorlead, than put bearing train on the abutment.8.6Assemble cushion on bearing train abutment according to sequence,then set guide pin component on the air inlet box, using position pin tofix bearing train.8.7Set the sealing disc and sealing clearance should accord with drawingrule, the radial run out adjustment less than 0.5 mm.8.8Alignment housing air inlet box, use bearing train to check, whetherrun out of housing surface accord with drawing prescribe. Take thecentre line of fan assembly as reference line, level tolerance of itscentre line is 0,1 mm/ meter, the locate by bearing train centre line.8.9Grout anchor bolts on the air inlet box abutment. After concretecorrection, tightening anchor bolts and re-check bearing train centreand level ness.9INSTALL DIFFUSER9.1Set and align base plate to diffuser support.9.2Install diffuser on the foundation, fix glade abutment to diffusersupports and regulate diffuser position by using two regulating cushionat the same time.9.3Align the diffuser horizontally and vertically refer to bearing traincentre.9.4Grout the diffuser anchor bolt.9.5Conduct secondary grout on the inlet box mounting plate.9.6After concrete concretion, tightening anchor bolt and remove thediffuser around 1 meter along base plate orbit to make rotor assemblyeasier.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 11 of 18 REVISION 0 10INSTALL HUB10.1Conduct cleaning on the hub before installed, make sure the hub freefrom rush and dust.10.2Check the inside diameter of hub and out side diameter of impellershaft refer to drawing design.10.3Install special ear lug on vane shaft, then hoist hub to level height ofbearing box main shaft.Note : Should be use special ear lug from supplied by factory ormade according to drawing 903.202H to hoist hub.10.4Check if key set in main shaft key groove. It is necessary to regulatekey when installing hub hub on main shaft.10.5Anti clench extender should be spread on shaft end.10.6Set hub on shaft and tight it with main shaft, install nut on main shaft,crook anti loosing washer to make nut safe.10.7Heat hub to 500~700equably during assembly, it can bring bigconvenience to hub assembly.11INSTALL VANEAssembly position of vane on hub is arranged by computer program, pleaseinstall according to sequence and marks on vanes and vane shaft strictly.11.1Clean the hub flute, put the Teflon sealing loop in flute, check andmake sure ring can move like a cork and pay attention to ring hatch isat side of impeller outlet.11.2Set vane on vane shaft according to sequence, spread a little graphiteoil on vane bolts and tighten them. Vane bolt tighten torque rule is 45N-m. Other bolts tightening torque rule on appendix 111.3Check the clearance between vane top and housing limit value andregulating following steps ;1.Before measuring the clearance between vane and main airhousing, housing should be connected with air inlet box by bolts.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 12 of 18 REVISION 02.Run impeller according to clearance value in record card 1 onappendix 2; ensure the clearance value 2.3 mm ~ 3.5 mm.3.Clearance between vane and housing inner surface should bemeasured by slipping wedge hardwood into vane roots and hubunder the condition that fan stator is cold and stable.Notice: Clear cork after measured.4.To meet item no. 3 requirement, regulate nuts on vane shaft.The minimum radial clearance between vane shaft and hubshould be more than 0.5 mm, the maximum one can not makethe bugle of vane root on hub is more than 0.8 mm.5.Regulating the clearance between vane and main air housing mayinfluence rotor balance, if necessary rebalance rotor.Notice:After air inlet box, main air housing, diffuser are connectedtogether, recheck the clearance between vane top andmain air housing inner surface. It only need to theminimum clearance of the longest vane.12INSTALL HYDRAULIC REGULATORThe following steps refer to drawing .12.1Fix the hydraulic cylinder on bearing shaft by bolts.12.2Fix supporting cover (17) on hub cover, then run hub to makesupporting cover (17) bolt (18) hole aim at hydraulic cylinder bolt (18)hole and tighten bolts (18).12.3Dial to align hydraulic cylinder, fix dial gauge support on main airhousing end, then aim it at regulating valve box left outer round tomeasure run out, at the same time align bearing cover (17). Duringdialling to align, the run out tolerance of hydraulic cylinder is 0.05 mm,tighten bolts and re-check it.12.4Push down regulating valve (05) into regulating valve box (19)carefully; check if spring (09) position is right. Put cuprum gasket afterheating it. Then mount rotary oil seal by using bolts.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 13 of 18 REVISION 0 Notice;The marks on rotary oil seal and regulating valve must beconsistent, tighten bolts (16) carefully and use filler gauge tocheck if bolts have been tightened uniformly on rotary oil sealand regulating valve flange interface, the clearance difference isunder 0.1 mm.12.5Dial to align rotary oil seal, dial gauge should be set as closely aspossible to rotary oil seal cover. When dialling to align, the run outtolerance is 0.05 mm.12.6Mount seal disc between diffuser inner tube and hub support cover.Firstly nuts should be spot-welded, regulate seal radial clearance, itsclearance difference under is under 0,4 mm. Fix seal disc afterregulating clearance.12.7Mount regulating fork (01) on rotary oil seal (02) and its other end oncrank of regulating drive equipment.12.8Set hydraulic regulating oil pipes. Firstly clean every hose and threesteel tubes in diffuser, then connect hoses between hydraulicregulating oil stations before connecting rotary oil seal pipe, firstlyconnect flexible pipe with oil station to be a close loop, start oil pumpand clean pipe system follow the pre-commissioning procedure. Checkif pipe joint have leak. If they have, tighten them or change a new oneif necessary.13INSTALL SERVO MOTORThe following steps refer to drawing no. 255.25H13.1Ensure installation servo driving device as according drawingrequirement.13.2Place the servo motor on its foundation, align the servo motor refer toregulating arm.13.3When the servo motor’s drive arm is rotated 900(start position shownon the drawing no.255.25H). The regulating arm is rotated 450.PLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 14 of 18 REVISION 013.4If the item 13.3 can not reach, it can be solved by regulating theposition of the lug of regulating arm and link length.13.5Grout the servo motor base plate.14VANE ANGLE REGULATING14.1Firstly disassemble a piece of fan, set vane angle regulating panel onvane shaft.14.2Start hydraulic regulating oil station, regulate vane angle by servomotor manual or electric equipment to make the measured angle vaneangle regulating panel is 32.50.14.3Regulate crank of regulating drive equipment to vertical position byjoint bearing and tightened screw thread position and fix fork length.14.4Regulate out side regulating angle displayer to the same angle.14.5Regulate vane angle to 10 0and 55 0,then check if out sidedregulating angle displayer is in synchronization with vane angleregulating panel.15INSTALL FLEXIBLE CONNECTION ASSEMBLY15.1Mount flexible connection before mounting clip ring.15.2Mounting clip ring, pay attention do not mount clip ring out of ringer.15.3Tighten clip ring bolt by uniformly, pay attention to the tightness ofbolts is uniform.15.4Keep free end of clip ring do not damage flexible connection.15.5If exposure of flexible connection in danger caused by machine, suchas flying weld spatter during welding, so flexible connection must becovered with suitable material, until unit starting.15.6During flexible connection assembly, the least size is 200 mm, andtrack dry by cementation agent supplied with machine.16INSTALL MOTOR AND COUPLING ASSEMBLY16.1Put the motor unit near the foundation.PLTU 2 NTB 2 X 25 MWCOAL FIRED STEAM POWER PLANTDOC. NOINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 15 of 18 REVISION 016.2Clean the motor unit, ensure free from oil, grease, burr, etc, on thebottom base plate surface.16.3Base on foundation of the motor unit.16.4Align motor position by centreline of bearing train.16.5Ensure the contact surface of motor base plate to padding platearound 75%.16.6Conduct first stages grout the anchor bolt of motor around ¾ heightof anchor bolt.16.7Prior to alignment of motor unit, the shim 3~4 mm shall be pre-setbetween motor and base plate of motor unit.16.8Assemble a half coupling to motor shaft and a half other to bearingtrain shaft.16.9Dial to align coupling centreline and motor end coupling as fan endcoupling reference, axes line degree tolerance of motor is 0.025 mm.Clearance between two coupling surface is uniform, its error is under0.10 mm.17TEST RUNAfter all parts have been assembled and fan assembling size is passed test,fan and motor base finish secondary grouting and all anchor bolts have beentightened, fan should be test run for 8 ~ 10 hours, to prove the test runningcondition of all fan parts accord with request.18ERECTION RECORDNO WORK ITEM REQUIREMENTINSPECTED BYCS BI PLN1.Foundation survey See item 7.2 X X X2.Paddinga. Elevation -2 ~ 0 mm X X Xb. Level ness0,5 mm/m X X X3.BearingPLTU 2 NTB 2 X 25 MWCOAL FIRED STEAM POWER PLANT DOC. NOINSTALLATION PROCEDURE OF AXIAL FLOW FORCED DRAFT FANISSUANCE DATE: Unit Issuing : ConstructionApproved By : Site ManagerPage 16 of 18REVISION 0a. Visual cleaningX b. Level ness Not exceed than 0.1mm/mX X X c. Centreline 0,5 mm X X X 4.Inlet boxa. Centre line3 mm X X X b. Torque anchor bolt 45 N-M X X X 5.Diffusera. Level ness 0.2 mm/m X X Xb. Centre line3 mmX X X c. Torque anchor bolt See appendix 2X X X 6.Huba. Torque hub bolts See appendix 2 XXX7.Vane assembly a. Vane bolts torque 45 N-Mb. C learance deviation around rotary oil seal and regulating valve interfaceNot exceed 0.1mmX X Xc. Radial clearance between vane shaft and hub 0,5mm< …< 0.8 mm X X Xd. Clearance between vane and main air house.2.3 ~3.5 mm X X X 8.Hydraulic Regulator a. Radial run out of hydraulic tank Max. 0.05 mm XX X b. Clearance rotary oil seal and regulating flange interface Not exceed than o.1 mm X X X c. Radial run out rotary oil seal Max. 0.05 mm X X X d. Radial clearance difference between diffuser inner tube and hub support cover. Not exceed 0.4 mm XXX9.Servo Motor a. Torque of servo motor 50 NMX X XPLTU 2 NTB 2 X 25 MWDOC. NOCOAL FIRED STEAM POWER PLANTINSTALLATION PROCEDURE OFAXIAL FLOW FORCED DRAFT FAN ISSUANCE DATE:Unit Issuing : Construction Approved By : Site Manager Page 17 of 18 REVISION 0 APPENDIX 1TORQUE REQUIREMENT OF BOLT TIGHTNINGGrade bolt 4.68.812.912.9Gradenut 4.6 4.6 4.6 8.8Meter M6 0.6 0.9 1.2 1.5Kilogram.FootPound.4.3 6.5 8.7 10.9MeterKilogram.M8 1.5 2.2 2.9 3.8FootPound.10.9 15.9 21.0 27.5MeterKilogram.M10 2.8 4.4 5.5 7.4FootPound.20.3 31.9 39.8 53.6M12 5.07.59.512.5Kilogram. MeterFoot36.2 54.3 68.8 90.5Pound.MeterKilogram.M16 12.0 18.5 23.5 31.0FootPound.86.9 134 170 224MeterKilogram.M20 24.0 36.0 45.0 60.0Pound.Foot174 261 326 435Kilogram.Meter M24 40.0 60.0 75.0 100Foot290 435 544 725Pound.PLTU 2 NTB 2 X 25 MWCOAL FIRED STEAM POWER PLANT DOC. NOINSTALLATION PROCEDURE OF AXIAL FLOW FORCED DRAFT FANISSUANCE DATE: Unit Issuing : ConstructionApproved By : Site ManagerPage 18 of 18REVISION 0APPENDIX 2Record CardThe scheme of measuring pot seen from air inlet end scheme。