东方60MW汽轮机说明书

《东方60MW汽轮机说明书》由会员分享，可在线阅读，更多相关《东方60MW汽轮机说明书（18页珍藏版）》请在装配图网上搜索。

1、ProjecContentsS/NSectionDescriptionPagesRemarksClient1Compilation Description121Mam Teclinical Specification and Economic Target1Consu31-1Main Teclinical Specification241-2Teclinical and Economic Target and Promise Conditions1EPC C52General Design Featuies 162-1Operation Features2Equip72-2Mam Steam

2、System and Regenerative Extraction System282-3Steam Contribution and Operation Modes1Docui92-4Water-sprayiiig System for Real- Cylinder1Docui103Constmctional Features of Turbine Proper2113-1Shafting2123-2Cylinder2133-3Steam Fairway AiTangement2143-4Valves and Pipes2153-5Slide Key System and Differen

3、tial Expansion2163-6Turning Geai-2173-7Insulation and Enclosure1183-8Temperatuie and Pressure Momtoiiiig1194Manufacturer Name and Address1(WBK)D60F-000100BSMN60-8.83 Turbine Instruction Manual (Main Turbine)Page 1 of 1Compilation DescriptionN60-8.83 type steam turbme is a 60 MW tuibine model that is

4、 designed and manufactured based on the advanced technologies that are introduced domestically and mternationallv It is a new kind of condensing turbine of impulse type, liigh temperature, pressure and single cylinder. It matches boiler of conespondmg capacity and steam turbine generator to form the

5、rmal generation unit. It is of basic load in electricity grid, and can also regulate the peak.The control system of tliis unit is low pressuie electric regulation.控制系统是低压电液控制This iiistiiiction manual mauily describes tlie general design of the unit and tlie stmctuie of tlie tuibme proper. Please ref

6、er to related teclinical documents provided with the machme for detailed descriptions on related auxiliaries, governing, protection and safety systems, installation and maintenance, stait-up and operation, and vaiious systems If the instmction conflicts with teclinical documents provided, the docume

7、nts shall prevailIn this iiistiiiction the pressures for the thermal system are presented in absolute pressure. The instmction uses legal measurmg units system which can be converted .into engineeiiiig measuring units by means of the following:Force: 1 kgf = 9.8067 N Pressure: 1 kgf / cm2=0.098067 M

8、Pa Heat: 1 kcal = 4.1868 KJNote: definitions of Hleftn and right” sides: Being viewed in the duection from tlie steam turbine towards the generator; the left hand side is defined as the nleftM side whereas the right liand side is defined as the HrightM side. Definitions of nfiontn and nrearM ends: t

9、he end close to the steam tuibme is defined as the HfiontH whereas the end close to the generator is defined as nreaiM end (WBK)D60F-000100BSMN60-8.83 Turbine Instruction Manual (Main Turbine)1 Main Technical Specification and Economic Target(WBK)D60F-0001 OOBSMN60-8.83 Turbine Instruction Manual (V

10、lichnical Specification1 Model: N60-8.83型号：N60-8.832 Type.- impulse high pressure, lugh tempeiatuie, single cylinder, single shaft condensing steam tuibme类型：冲动式、高压、高温、单缸、单轴冷凝汽轮机3 Guarantee output (TMCR condition): 60MW保证输出(TMCR工况)：60 MW4 Maximum power (VWO condition): 64.5MW最大功率(VWO工况)：64.5MW5 Rated

11、 condition (TMCR condition) paraineteis:额定工况参数a) Main steam pressure: 883MPa 主蒸汽压力 8.83NIPab) Maili steam tempeiatuie: 535C 主慕汽温度 535Cc) Main steam flow: 225.8t/h 主蒸汽流量 225.8t/hd) Back pressure: 85kPa 背压 8.5kPae) Inlet tempeiatuie of the cooling water: 30C 冷却水进 口温度 30Cf) Makeup water tempeiatuie: 23

12、5.4C补给水富度 235.4C6 Maximum steam flow: 245t/h 主蒸汽流量 245t/h7 Rotation direction: clockwise when viewed in tlie direction from tuibine to generator转动方向：8 Rated speed : 3000i7nun 额定转速：3000r/nun9 Shafting critical speed: (calculated value):临界转速(计算值)1810r/mni (Steam turbine 1st step) 4160r/niui(Steam turb

13、ine 2nd step) *1679.7r/niin (Generator1st step)* The shaft critical speed of generator refers to tlie data provided by the manufacturing company of thegenerator.N60-8.83 Turbine Instruction Manual (Main Turbine)(WBK)D60F-0001 OOBSM10 Number of stages: 21 stages in total, consisting of 1 governing st

14、age +20 pressuie stages级数：21级，包括一个调节级和20个压力级11 Regenerative extractions: 6 stages consistmg of 2 HP heaters+3 LP heaters+1 deaeiatoi回热抽气：6级，包括2个高压加热器3个低压加热器和除氧器12 Height of the last stage blade: 660mm最后的叶片长度：660mm13 Annular area of the last blade: 4.14 m214 Cooling surface area of the condenser: 400

15、0 m2凝汽器冷却面积：4000 m 215 Points for non-controlliiig extraction: Behind stages No 5. 8, 11, 15, 17, 1916 Overall dmiension of tlie turbine: 8569.5nmix6900nmix3360nun (The height is the distance behveenelevation of the operation floor and atmospheric-piessure-relief valve on tlie rear cylinder.)17 Weig

16、ht of the steam tui bme:141 匚(iiicludmg valves, steam pipes, flame and levelling parallels)18 Maximum liftmg weight:25 tons(fbr lifting upper cylinder assembly during maintenance)38 tons(for liftmg lower cvlmder assembly during installation)19 Maxuuum liftmg height: 6.36m (with respect to the opeiat

17、ion floor) 20.Elevation of the operation floor: 8 m21 Executive standaid of the product: GB 5578-85 Specification for Stationary Steam TurbinesDriving Generator(WBK)D60F-0001 OOBSMN60883 Turbine I挡嗔制刪料瀏強剔曲淋 Target and Promise Conditions1 The rated output 60MW (TMCR condition) (The heat guarantee val

18、ue is 9249 kJ/kW.h)will be guaranteed if the following operation conditions aie met:a) Maili steam pressure: 8.83MPa；b) Maili steam temperature: 535C;c) Main steam flow: 225.8t/h；d) Back pressure: 8.5kPa； Inlet temperatuie of the cooling water: 30cC;e) Makeup water flow: 0%;f) Regenerative extractio

19、n system operates normally and keep steam fairway normal and clean;g) Makeup water pump meets rated paiameteis;h) Efficiency of the generator is no less than 98.33%, rated power factor is 0.8;2. The maximum output, 62.6N1W will be guaranteed if the following operation conditions are met (under the V

20、WO condition):a) Maili steam pressure: 8.83MPa； Maili steam tempeiature: 535CC；b) Main steam flow: 237.1t/h;c) Back pressure: 85kPa： Inlet temperature of the coolmg water: 30C；d) Makeup water flow is： 0%;e) Regenerative extraction system operates normally and keep steam fairway normal and clean;f) M

21、akeup water pump meets rated parameters;g) Efficiency of the generator is no less tliaii 98.33%, rated power factor is 0.8;3. If the thermal evaluation test is not conducted in a timely niamier after the unit is put into operation, an agingdeduction factor for conecting the thermal efficiency shall

22、be considered in accordance with TEC 953-2-90 of International Electiiciaiis ConmutteeThe factors are as follows:a) 0.07%/month during a period of 3-12 months;b) 0.042%/month durmg a period of 13-24 months;Method for acceptance test with respect to the thermo-dynaniic performance, accuracy of the ii

23、istniments used, the revision of the test results and the uncertainty of measured heat rate should meet the American Society of Mechanical Engmeers Standard (ASME PTC6.1).1-2-1(WBK)D60F-000100BSMN60-8.83 Turbine Instruction Manual (Main Turbine)2 General Design Features2-12-1 Operation FeaturesN60-8

24、.83 Turbine Instruction Manual (Main Turbine)(WBK)D60F-0001 OOBSM1 Startup ConditionsThe startup conditions of this unit aie classified based on the umer wall metal temperatuie of the lower body of fiont cylinder after the regulating stage.Cold stait-up: less than 150C;Warm start-up: 15OC-3OOC:Hot s

25、tart-up: 300M00cC;Extreme hot start-up: above 400C;The unit can be stalled up with rated paiameteis or slide paiaineters2 Operation Controlling ModeOperator manual mode (manual); operator auto mode (semi auto); turbine sei人start mode (auto)3 Offset Frequency OperationDuring lifetime, the unit operat

26、ion is continuous and stable in the frequency range of 48.551 Hz Offset frequency operation time lunit of the unit shall conform to the following table.Fiequencv (Hz)Permitted operation timeTotal (niiii)One time (sec)51.5Not allowed51.0-51.5303048.5-51.0Continuous operation48.0-48.530030047.5-48.060

27、6047.0-47.5101047.0Not allowed4 Unit allowable load change rateFrom 100% to 50%T-MCR, not more than 5%TMCR/min; Below 50%T-MCR, not more than 3%T-MCR/nun; Load phase step bemg no more tliaii 10% is allowed5 O tliers5.1 To ensure safe unit operation, the maximum allowed back pressuie is 17.7kPa; maxi

28、mum allowed exliaust temperature is 100cC.5.2 It is not allowed idle running to last more than 15 minutes after load rejection.5.3 The allowed unit minimum load for long-term operation is 18MW, witlun the range of nununum load to 100% N60-8.83 Turbine Instruction Manual (Main Turbine) (WBK)D60F-0001

29、00BSMrated load, the tuibme can operates contmuously and stably1 Maili Steam SystemThe 111am steam system is a unit operation that means one boiler operates witli one steam tuibme under normal conditionThe mam steam, coming from tlie boiler, flows into the mam stop valve tluough a main steam pipe, t

30、hen it goes to four governing valves separately via four main steam mlet pipes, finally flows to the cylinder. The steam, having done work in tlie cylinders, will be exliausted into a condenser tluough tlie rear cylinder.2 Regenerative extraction systemThere are six stages of regenerative extraction

31、 for this unit, consisting of two HP heatei s, one deaerator and tluee LP heaters. Please refer to Figure 2-2-1 Rated Condition Heat Balance Chart.Table 2-2-1 shows all parameter of the extracted steam for the regenerative system when the deaerator is in constantpressuie operation under TMCR conditi

32、on.Extraction Section No123456Heater nameNo.lHPHTRNo.2HPHTRDTRNo.4LPHTRNo.5LPHTRN0.6LPHTRExtraction pomt(belund stage)5811151719Pressure(MPa)3.4661.941.0260.3520.1540.045Pressure loss(MPa)3%3%5%5%5%5%Extraction temperaturefC)416.1342.9269.1160.9112.17&6Flow (t/h)14.11316.7295.0767.88811.26.4Table 2-

33、2-12-1-2N60-8.83 Turbine In孰K詔讪乳孵也谢酹臨鹅尸览皿 System under TMCR ConditioijWBK)D60F.0ooioOBSM| LHIHALPY1 wrpCl1_ m G m If(东方汽轮机有枚公可DDESIGNrwaniEfLDwHEAT RATEr19249 kJ/kVhsRsN3.763 kg/kV.h1017.1H 235.4!r 囂-L 意 8.9H Hg!S6.3H 3266=5氓I9，浸S 一 SI I I 4&.空 M42SL 1;H? HTR;.8 二.6H204出IiS一1874 划c龙CLro5BH 4 W8H2 37

34、A 3T D5 rr451g-2-亠=7工右S3475.三4O*S6HQ3146284.CF仆180.4BISP 535兰3475主 2258M.Gsihonoukviu心宾60W HEAT BALANCE DWG3.466P 3361.8HHI 416.IT1.9恢 3记4.2H 16729.G 34?.9】 邂 29B4.4H 597 269JT 352P 27800H788检 160.9TI54P 26468H11200.6 112.HM5P 2479.9H6400.6 7&612-2-2(WBK)D60F-0001 OOBSMNozzle control, used in this u

35、nit, involves four groups of nozzles Each group of nozzles corresponds to one related governing valve The angles turned of the cams of admission distiibution cam mechanism correspond to the opeimess of the governing valves Figure 2-3-1 shows tlie distiibution of nozzle and the total number of steam

36、passages. When the unit load is less than 25%, the flow is controlled by equilibrated valves of the four goveniiiig valves, and steam shall uiiifornily enter the casing to reduce thermal stress. With the increase of load, No. I to No.IVgoveniing valves are opened in turn to control flow When all fou

37、r governing valves remain fully open, the partial admission rate reaches 62.5%m ImFigure 2-3-1From the Tuibine to the Generator2-4 Water-Spraying System for the Rear CylinderN60-8.83 Turbine Instruction Manual (Main Turbine)(WBK)D60F-0001 OOBSMWhen the unit operates under low load or no load conditi

38、ons, especially high back pressure condition, the temperature of tlie exliausted steam mcreases to overheat the cylinder. As a result, the center height of the bearing will be changed and violent vibration may occurThe water-spraying system, placed at the lower half of the rear cylindei; is used to

39、keep the unit in operation with safety and steadmess under low load or no load condition. It is contiolled automatically When the temperature of any side of the rear cylinder has reached 80 C, the conespondmg circuit will be closed by the bimetallic thermometer to actuate electrical valve so that th

40、e condensate which come from desalination device is sprayed into the rear cylinder tluough atomizing nozzles to decrease temperature of the exliausted steam When temperature of the exliausted steam is below 65C, the circuit will be open and the water spraying is stoppedThe condensate pressure must b

41、e controlled witlim the range of 02940490MPa in advance to obtam a perfect effect of atomization. Water spraying flow is witlim the range of 68t/h The details aie shown in tlie drawing 7BK)D50C.005.4Q. Water Spraying System(WBK)D60F-000100BSMThis is a kind of condensing turbine of unpulse typ Mgh te

42、mperature, pressuie and single cylinder In order to reduce the sti ess on the cylinder and increase the flexibility of the stait-up. shut-down and load changes, the front and MP part of cylinder designed as single tier cvlmder and diapluagm earner stnicture. The mam stop valve is airanged mdependent

43、ly at the front of the turbine on tlie elevation of the operation floor, and connected witli cylinder via pipes. Total length of the unit is 8569.5nmi See Figure 31 for the section view.Maili steam from the boiler HP heater enters the mam stop valve via one 325x28 main steam pipe and then to the 4 n

44、ozzle chambers in front cylinder respectively tluough 4 168x14 admission pipes. After working in 1 single serial goveniiiig stage and 20 pressure stages, the steam is exliausted to condenser from the exliaust chamber in rear cylinder. The 1st section of steam extraction is provided after tlie 5th st

45、age to supply 1# HP heater (N0.1HP HTR), the 2nd section of steam extiaction aie provided after tlie Sth stage to supply #2HP heater (NO.2HP.HTR), the 3iid section of steam extraction are provided after the 11th stage to supply the deaeiator (DTR).Theie is one extiaction pomt respectively after the

46、15tli stage, 17th stage and 19th stage to supply #4, 5 ,6 LP heaters (N0.4LPHTR, N0.5LPHTR. N0.6LP HTR)o7IVI-T4l： 土 IZZLi 匚1I+-The shafting consists of tuibine rotor, generator rotor, mam oil pump rotor connected to tuibine rotor via gear coupling, and exciter rotor behmd the generator.During the pr

47、ocess of the unit operation, the rotors are rotating on the supporting system, which consists of the bearmgs, beaiiiig housings, base plate and foundation. The stability and reliability of the shafting depend not only on the design and manufactiiimg chaiacteristics of vaiious rotors and beaiiiigs, b

48、ut also on such factors as the installation quality, foundation characteristics, operation conditions and load changing 亡tc. The shafting sketch is shown in Figure 3-1-1 J / f f TURBINE ROTOR /A i LZGENERATOR ROTOR/480022855660Kmm uFigure 3-1-1The tuibme rotor and generator rotor use rigid coupling

49、and the bolt .head is embedded in the couplmg in order to reduce noise and blast loss (Figure 3-1-2). The couplmg shall strictly conform to drawings and related teclmical1. Turbine end couplmg 2. Positioning screw 3. Non-retuni screw 4. Cover plate5. Special nut 6. Washer 7 Special bolt 8. Generator end couplmgFigure 3-1-2