CN105673101A - Turbine with deep peak regulation function and thermodynamic system - Google Patents

Turbine with deep peak regulation function and thermodynamic system Download PDF

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Publication number
CN105673101A
CN105673101A CN201610007552.4A CN201610007552A CN105673101A CN 105673101 A CN105673101 A CN 105673101A CN 201610007552 A CN201610007552 A CN 201610007552A CN 105673101 A CN105673101 A CN 105673101A
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China
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steam
pressure
cylinder
valve
exhaust
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CN201610007552.4A
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CN105673101B (en
Inventor
杨德荣
宁志刚
李王斌
杨文�
王灵梅
孟恩隆
魏君波
朱振荣
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Shanxi Zhangdian science and Technology Research Institute (Co., Ltd.)
Shanxi University
703th Research Institute of CSIC
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Electric Technology Research Center Shanxi Zhangze Power Co Ltd
Shanxi University
703th Research Institute of CSIC
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Application filed by Electric Technology Research Center Shanxi Zhangze Power Co Ltd, Shanxi University, 703th Research Institute of CSIC filed Critical Electric Technology Research Center Shanxi Zhangze Power Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00General layout or general methods of operation of complete plants
    • F01K13/02Controlling, e.g. stopping or starting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18Combinations of steam boilers with other apparatus

Abstract

The invention relates to the field of thermal power generation, in particular to a turbine with a deep peak regulation function and a thermodynamic system. The turbine comprises an intermediate-pressure cylinder, a synchronous automatic clutch, a high-pressure cylinder, a low-pressure cylinder, an intermediate-pressure by-pass valve and the like, wherein the intermediate-pressure cylinder, the synchronous automatic clutch, the high-pressure cylinder and the low-pressure cylinder are connected with one another through a coupler and connected with a power generator through the output end of a low-pressure rotor. During deep peak regulation of a unit, a high-pressure steam inlet regulation valve and an intermediate-pressure steam inlet regulation valve are closed, the intermediate-pressure cylinder is cut off through the synchronous automatic clutch, the high-pressure cylinder is vacuumized through a vent valve, a high-pressure by-pass valve and the intermediate-pressure by-pass valve of the unit are opened, steam from a boiler directly enters the low-pressure cylinder for acting, the unit is maintained to operate with low power output, and the purpose of deep peak regulation of the unit is achieved.

Description

A kind of steam turbine with degree of depth peak regulating function and therrmodynamic system
Technical field
The present invention relates to field of thermal power, be specially a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system.
Background technology
In current China generating capacity, fired power generating unit constitutes about 70%, generating general layout based on thermoelectricity will not change within period considerably long from now on, thermoelectricity is as the main force of generating, also it is the main peak regulation hands section in electrical network simultaneously, owing to not being specifically designed to the fired power generating unit of peak regulation, the substantially all participation peak regulation of all of fired power generating unit, in the heat supply phase, many thermal power plant unit are more had to lose peak modulation capacity, the consequence caused is, substantial amounts of 600MW on the one hand, 1000MW extra-supercritical unit needs to participate in peak regulation, the advantage that its efficiency is high can not be not fully exerted, on the other hand, deficiency due to peak load regulation network ability, substantial amounts of wind-powered electricity generation has to often abandon wind, clean energy resource wastes, investment can not get effective return.
Summary of the invention
The present invention is to solve the problems referred to above, it is provided that a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system.
The present invention adopts the following technical scheme that realization: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder, synchronize automatic clutch, first thrust bearing, second thrust bearing, intermediate pressure by-pass valve, high pressure steam discharge ventilation valve, high-pressure admission regulates valve, in be pressed into steam control valve, high pressure exhaust check valve, middle pressure vapour butterfly valve, steam exhaust device, in shaft system of unit, intermediate pressure cylinder, high pressure cylinder, low pressure (LP) cylinder is sequentially connected with, and arranges synchronization automatic clutch between intermediate pressure cylinder and high pressure cylinder, is provided with the first thrust bearing at intermediate pressure cylinder steam admission side, steam admission side at high pressure cylinder is provided with the second thrust bearing, the admission end that main steam line regulates valve and high pressure cylinder by high-pressure admission connects, the exhaust steam end of high pressure cylinder is connected by high pressure exhaust check valve and the pipeline to boiler reheater, main steam line and the pipeline to boiler reheater are connected by high pressure bypass valve, the exhaust steam end of high pressure cylinder is connected by high pressure steam discharge ventilation valve and steam exhaust device, the admission end being pressed into steam control valve and intermediate pressure cylinder from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder is connected by the admission end of middle pressure vapour butterfly valve and low pressure (LP) cylinder, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve and low pressure (LP) cylinder, the exhaust steam end of low pressure (LP) cylinder and steam exhaust device connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve and steam exhaust device.
The present invention can also adopt the following technical scheme that realization: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high intermediate pressure cylinder, low pressure (LP) cylinder, synchronize automatic clutch, first thrust bearing, second thrust bearing, intermediate pressure by-pass valve, high-pressure admission regulates valve, in be pressed into steam control valve, high pressure exhaust check valve, middle pressure vapour butterfly valve, steam exhaust device, in shaft system of unit, high intermediate pressure cylinder and low pressure (LP) cylinder connect, synchronization automatic clutch is set between high intermediate pressure cylinder and low pressure (LP) cylinder, high pressure exhaust region at high intermediate pressure cylinder is provided with the first thrust bearing, it is provided with the second thrust bearing in the close automatic clutch side that synchronizes of low pressure (LP) cylinder, the high-pressure admission end that main steam line regulates valve and high intermediate pressure cylinder by high-pressure admission connects, the high pressure exhaust steam end of high intermediate pressure cylinder is connected by high pressure exhaust check valve and the pipeline to boiler reheater, main steam line and the pipeline to boiler reheater are connected by high pressure bypass valve, the middle pressure admission end being pressed into steam control valve and high intermediate pressure cylinder from the reheaing steam pipe of boiler reheater in passing through connects, the middle pressure exhaust steam end of high intermediate pressure cylinder is connected by the admission end of middle pressure vapour butterfly valve and low pressure (LP) cylinder, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve and low pressure (LP) cylinder, the exhaust steam end of low pressure (LP) cylinder and steam exhaust device connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve and steam exhaust device.
The present invention can also adopt the following technical scheme that realization: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder, intermediate pressure by-pass valve, high pressure steam discharge ventilation valve, high-pressure admission regulates valve, in be pressed into steam control valve, high pressure exhaust check valve, middle pressure vapour butterfly valve, steam exhaust device, reheated steam temperature-decreased pressure reducer, middle pressure vapour ventilation valve, in shaft system of unit, high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder is sequentially connected with, the admission end that main steam line regulates valve and high pressure cylinder by high-pressure admission connects, the exhaust steam end of high pressure cylinder is connected by high pressure exhaust check valve and the pipeline to boiler reheater, main steam line is connected by high pressure bypass valve and the pipeline to boiler reheater, the exhaust steam end of high pressure cylinder is connected by high pressure steam discharge ventilation valve and steam exhaust device, the admission end being pressed into steam control valve and intermediate pressure cylinder from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder is connected by the admission end of middle pressure vapour butterfly valve and low pressure (LP) cylinder, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve and low pressure (LP) cylinder, reheaing steam pipe from boiler reheater is connected by the extraction line of reheated steam temperature-decreased pressure reducer and intermediate pressure cylinder, the exhaust steam end of intermediate pressure cylinder is connected by middle pressure vapour ventilation valve and steam exhaust device, the exhaust steam end of low pressure (LP) cylinder and steam exhaust device connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve and steam exhaust device.
Above-mentioned a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, steam exhaust device is applicable to Direct Air-cooled Unit, is condenser when suitable in wet type cooling unit and indirect air cooling unit.
The invention provides a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, during degree of depth peak regulation, high-pressure admission regulate valve and in be pressed into steam control valve close, high pressure cylinder passes through high pressure steam discharge ventilation valve evacuation, unit high pressure bypass valve and intermediate pressure by-pass valve are opened, steam from boiler is directly entered low pressure (LP) cylinder acting, maintains unit in relatively low operation of exerting oneself, reaches the purpose of unit degree of depth peak regulation.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of embodiment two.
Fig. 3 is the structural representation of embodiment three.
In figure: 1-high pressure cylinder, 2-intermediate pressure cylinder, 3-low pressure (LP) cylinder, 4-electromotor, 5-synchronizes automatic clutch, 6-the first thrust bearing, 7-the second thrust bearing, 8-high pressure bypass valve, 9-intermediate pressure by-pass valve, 10-low voltage bypass valve, 11-high pressure steam discharge ventilation valve, 12-high-pressure admission regulates valve, is pressed into steam control valve in 13-, 14-high pressure exhaust check valve, pressure vapour butterfly valve in 15-, 16-steam exhaust device, 17-reheated steam temperature-decreased pressure reducer, pressure vapour ventilation valve in 18-, 19-extraction check valve.
Detailed description of the invention
Embodiment one: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high pressure cylinder 1, intermediate pressure cylinder 2, low pressure (LP) cylinder 3, electromotor 4, synchronize automatic clutch 5, first thrust bearing 6, second thrust bearing 7, intermediate pressure by-pass valve 9, high pressure steam discharge ventilation valve 11, high-pressure admission regulates valve 12, in be pressed into steam control valve 13, high pressure exhaust check valve 14, middle pressure vapour butterfly valve 15, steam exhaust device 16, in shaft system of unit, intermediate pressure cylinder 2, high pressure cylinder 1, low pressure (LP) cylinder 3, electromotor 4 is sequentially connected with, synchronization automatic clutch 5 is set between intermediate pressure cylinder 2 and high pressure cylinder 1, steam admission side at intermediate pressure cylinder 2 arranges the first thrust bearing 6, steam admission side at high pressure cylinder 1 arranges the second thrust bearing 7, the admission end that main steam line regulates valve 12 and high pressure cylinder 1 by high-pressure admission connects, the exhaust steam end of high pressure cylinder 1 is connected by high pressure exhaust check valve 14 and the pipeline to boiler reheater, main steam line is connected by high pressure bypass valve 8 and the pipeline to boiler reheater, the exhaust steam end of high pressure cylinder 1 is connected by high pressure steam discharge ventilation valve 11 and steam exhaust device 16, the admission end being pressed into steam control valve 13 and intermediate pressure cylinder 2 from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder 2 is connected by the admission end of middle pressure vapour butterfly valve 15 and low pressure (LP) cylinder 3, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve 9 and low pressure (LP) cylinder 3, exhaust steam end and the steam exhaust device 16 of low pressure (LP) cylinder 3 connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve 10 and steam exhaust device 16.
When unit is properly functioning, high pressure bypass valve 8(effect is that main steam passes through its pressure and temperature reducing, it is returned directly to boiler reheater) without high pressure cylinder, intermediate pressure by-pass valve 9(effect is that reheated steam passes through its pressure and temperature reducing, it is directly entered low pressure (LP) cylinder) without intermediate pressure cylinder, low voltage bypass valve 10(effect is that reheated steam passes through its pressure and temperature reducing, not by intermediate pressure cylinder and low pressure (LP) cylinder, it is directly entered steam exhaust device) it is in closed mode, synchronize automatic clutch 5 and be in engagement state, it is incorporated into the power networks by steam turbine drawing generator 4, it is completely the same with the steam turbine operation mode of prior art that (namely main steam enters high pressure cylinder acting, high pressure cylinder steam discharge returns to boiler reheater, reheated steam enters intermediate pressure cylinder acting, intermediate pressure cylinder steam discharge enters low pressure (LP) cylinder acting, exhaust steam enters steam exhaust device). when unit needs degree of depth peak regulation, progressively reduce boiler output, steam turbine is exerted oneself and is also gradually lowered accordingly, cylinder load is cut when what unit output was reduced to setting, first the operation of excision high pressure cylinder is completed, progressively open high pressure bypass valve, progressively close high-pressure admission and regulate valve 12 and high pressure exhaust check valve 14, open high pressure steam discharge ventilation valve 11, high pressure cylinder 1 evacuation, keep main steam pressure stable, cut and cylinder process to keep speed faster, prevent air blast friction from causing exhaust temperature of HP to raise, cause unit tripping, after having switched, high pressure rotor constant speed under vacuum conditions rotates, do not do work, air blast rubbing action is also more weak, high pressure cylinder is out of service, main steam returns to boiler reheater by high pressure bypass valve 8, after reheating, reheated steam enters intermediate pressure cylinder acting.Then boiler output is reduced further, complete the operation of excision intermediate pressure cylinder, it is pressed into steam control valve 13 and middle pressure vapour butterfly valve 15 in progressively closing, after valve closes entirely, do not had steam to do work due to intermediate pressure cylinder, synchronize automatic clutch 5 progressively to disengage, middle pressure rotor is gradually lowered rotating speed, jiggering is put into (if the band synchronizing automatic clutch transfers to making middle pressure rotor be in low speed rotation state after stationary rotor, then need not put into jiggering), intermediate pressure cylinder is out of service, progressively open intermediate pressure by-pass valve simultaneously, keep reheat pressure stable, reheated steam enters low pressure (LP) cylinder by intermediate pressure by-pass valve and continues acting, cut cylinder to have operated. depending on low pressure (LP) cylinder exhaust temperature situation, can reducing boiler output further, reduce low pressure (LP) cylinder load, when low pressure (LP) cylinder exhaust temperature allows, unit output can reduce as far as possible, to reach the purpose of degree of depth peak regulation. by the pressure and temperature reducing function of intermediate pressure by-pass valve, mating of boiler reheater outlet vapor parameter and low pressure (LP) cylinder steam inlet condition can well be realized, when unit needs increase to exert oneself, it is also possible to promote main steam and reheated steam parameter easily, in order to the input again of high pressure cylinder and intermediate pressure cylinder. when steam turbine realizes degree of depth peak regulation, it is necessary to boiler low load stable combustion, coal-powder boiler needs to arrange the steady combustion equipment such as plasma or Gasifying Small Oil Gun, and CFBB amount of stored heat is big, low-load combustion-stabilizing ability is strong, is more suitable for degree of depth peak regulation.
Embodiment two: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high intermediate pressure cylinder 1a, low pressure (LP) cylinder 3, electromotor 4, synchronize automatic clutch 5, first thrust bearing 6, second thrust bearing 7, high-pressure admission regulates valve 12, in be pressed into steam control valve 13, high pressure exhaust check valve 14, middle pressure vapour butterfly valve 15, steam exhaust device 16, in shaft system of unit, high intermediate pressure cylinder 1a, low pressure (LP) cylinder 3, electromotor 4 is sequentially connected with, synchronization automatic clutch 5 is set between high intermediate pressure cylinder 1a and low pressure (LP) cylinder 3, high pressure exhaust region at high intermediate pressure cylinder 1a arranges the first thrust bearing 6, at low pressure (LP) cylinder 3, second thrust bearing 7 is set near the side synchronizing automatic clutch 5, the high-pressure admission end that main steam line regulates valve 12 and high intermediate pressure cylinder 1a by high-pressure admission connects, the high pressure exhaust steam end of high intermediate pressure cylinder 1a is connected by high pressure exhaust check valve 14 and the pipeline to boiler reheater, main steam line is connected by high pressure bypass valve 8 and the pipeline to boiler reheater, the middle pressure admission end being pressed into steam control valve 13 and high intermediate pressure cylinder 1a from the reheaing steam pipe of boiler reheater in passing through connects, the middle pressure exhaust steam end of high intermediate pressure cylinder 1a is connected by the admission end of middle pressure vapour butterfly valve 15 and low pressure (LP) cylinder 3, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve 9 and low pressure (LP) cylinder 3, exhaust steam end and the steam exhaust device 16 of low pressure (LP) cylinder 3 connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve 10 and steam exhaust device 16.
When unit is properly functioning, high pressure bypass valve 8, intermediate pressure by-pass valve 9, low voltage bypass valve 10 are in closed mode, synchronize automatic clutch 5 and be in engagement state, steam turbine drawing generator be incorporated into the power networks, completely the same with the steam turbine operation mode of prior art. when unit needs degree of depth peak regulation, progressively reduce boiler output, steam turbine is exerted oneself and is also gradually lowered accordingly, cylinder load is cut when what unit output was reduced to setting, progressively open high pressure bypass valve 8 and intermediate pressure by-pass valve 9, progressively close high-pressure admission and regulate valve 12 and high pressure exhaust check valve 14, it is pressed into steam control valve 13 and middle pressure vapour butterfly valve 15 in progressively closing, after valve closes entirely, do not had steam to do work due to high intermediate pressure cylinder, synchronize automatic clutch 5 progressively to disengage, High inter case is gradually lowered rotating speed, jiggering is put into (if the band synchronizing automatic clutch transfers to making High inter case be in low speed rotation state after stationary rotor, then need not put into jiggering), high intermediate pressure cylinder 1a is out of service, cut cylinder to have operated, main steam returns to boiler reheater by high pressure bypass valve 8, after reheating, reheated steam enters low pressure (LP) cylinder by intermediate pressure by-pass valve 9 and continues acting, handoff procedure to keep main steam pressure and reheated steam pressure stability as far as possible.Depending on low pressure (LP) cylinder exhaust temperature situation, can reducing boiler output further, reduce low pressure (LP) cylinder load, when low pressure (LP) cylinder exhaust temperature allows, unit output can reduce as far as possible, to reach the purpose of degree of depth peak regulation.
Embodiment three: a kind of steam turbine with degree of depth peak regulating function and therrmodynamic system, including high pressure cylinder 1, intermediate pressure cylinder 2, low pressure (LP) cylinder 3, electromotor 4, high pressure steam discharge ventilation valve 11, high-pressure admission regulates valve 12, in be pressed into steam control valve 13, high pressure exhaust check valve 14, middle pressure vapour butterfly valve 15, steam exhaust device 16, reheated steam temperature-decreased pressure reducer 17, middle pressure vapour ventilation valve 18, extraction check valve 19, in shaft system of unit, high pressure cylinder 1, intermediate pressure cylinder 2, low pressure (LP) cylinder 3, electromotor 4 is sequentially connected with, the admission end that main steam line regulates valve 12 and high pressure cylinder 1 by high-pressure admission connects, the exhaust steam end of high pressure cylinder 1 is connected by high pressure exhaust check valve 14 and the pipeline to boiler reheater, main steam line is connected by high pressure bypass valve 8 and the pipeline to boiler reheater, the exhaust steam end of high pressure cylinder 1 is connected by high pressure steam discharge ventilation valve 11 and steam exhaust device 16, the admission end being pressed into steam control valve 13 and intermediate pressure cylinder 2 from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder 2 is connected by the admission end of middle pressure vapour butterfly valve 15 and low pressure (LP) cylinder 3, reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve 9 and low pressure (LP) cylinder 3, reheaing steam pipe from boiler reheater is connected by the extraction line of reheated steam temperature-decreased pressure reducer 17 and intermediate pressure cylinder 2, the extraction line of intermediate pressure cylinder 2 connects also by extraction check valve 19 and high-pressure heater, the exhaust steam end of intermediate pressure cylinder 2 is connected by middle pressure vapour ventilation valve 18 and steam exhaust device 16, exhaust steam end and the steam exhaust device 16 of low pressure (LP) cylinder 3 connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve 10 and steam exhaust device 16.
When unit is properly functioning, high pressure bypass valve 8, intermediate pressure by-pass valve 9, low voltage bypass valve 10, reheated steam temperature-decreased pressure reducer 17 are in closed mode, steam turbine drawing generator be incorporated into the power networks, completely the same with the steam turbine operation mode of prior art. when unit needs degree of depth peak regulation, progressively reduce boiler output, steam turbine is exerted oneself and is also gradually lowered accordingly, cylinder load is cut when what unit output was reduced to setting, first the operation of excision high pressure cylinder is completed, progressively open high pressure bypass valve 8, progressively close high-pressure admission and regulate valve 12 and high pressure exhaust check valve 14, open high pressure steam discharge ventilation valve 11, high pressure cylinder evacuation, keep main steam pressure stable, cut and cylinder process to keep speed faster, prevent air blast friction from causing exhaust temperature of HP to raise, cause unit tripping, after having switched, high pressure rotor constant speed under vacuum conditions rotates, do not do work, air blast rubbing action is also more weak, high pressure cylinder is out of service, main steam returns to boiler reheater by high pressure bypass valve, after reheating, reheated steam enters intermediate pressure cylinder acting. then boiler output is reduced further, complete the operation of excision intermediate pressure cylinder, it is pressed into steam control valve 13 and middle pressure vapour butterfly valve 15 in progressively closing, open middle pressure vapour ventilation valve 18, intermediate pressure cylinder evacuation, progressively open reheated steam temperature-decreased pressure reducer 17, cooling steam is sent into intermediate pressure cylinder from extraction line, depending on steam parameter after middle pressure stripping temperature and intermediate pressure cylinder temperature change adjustment reheated steam temperature-decreased pressure reducer, intermediate pressure cylinder is out of service, progressively open intermediate pressure by-pass valve simultaneously, keep reheat pressure stable, reheated steam enters low pressure (LP) cylinder by intermediate pressure by-pass valve and continues acting, cut cylinder to have operated. depending on low pressure (LP) cylinder exhaust temperature situation, can reducing boiler output further, reduce low pressure (LP) cylinder load, when low pressure (LP) cylinder exhaust temperature allows, unit output can reduce as far as possible, to reach the purpose of degree of depth peak regulation. by the pressure and temperature reducing function of intermediate pressure by-pass valve, mating of boiler reheater outlet vapor parameter and low pressure (LP) cylinder steam inlet condition can well be realized, when unit needs increase to exert oneself, it is also possible to promote main steam and reheated steam parameter easily, in order to the input again of high pressure cylinder and intermediate pressure cylinder.

Claims (4)

1. a steam turbine with degree of depth peak regulating function and therrmodynamic system, it is characterized in that including high pressure cylinder (1), intermediate pressure cylinder (2), low pressure (LP) cylinder (3), synchronize automatic clutch (5), first thrust bearing (6), second thrust bearing (7), intermediate pressure by-pass valve (9), high pressure steam discharge ventilation valve (11), high-pressure admission regulates valve (12), in be pressed into steam control valve (13), high pressure exhaust check valve (14), middle pressure vapour butterfly valve (15), steam exhaust device (16), in shaft system of unit, intermediate pressure cylinder (2), high pressure cylinder (1), low pressure (LP) cylinder (3) is sequentially connected with, synchronization automatic clutch (5) is set between intermediate pressure cylinder (2) and high pressure cylinder (1), it is provided with the first thrust bearing (6) at intermediate pressure cylinder (2) steam admission side, steam admission side at high pressure cylinder (1) is provided with the second thrust bearing (7), the admission end that main steam line regulates valve (12) and high pressure cylinder (1) by high-pressure admission connects, the exhaust steam end of high pressure cylinder (1) is connected by high pressure exhaust check valve (14) and the pipeline to boiler reheater, main steam line and the pipeline to boiler reheater are connected by high pressure bypass valve (8), the exhaust steam end of high pressure cylinder (1) is connected by high pressure steam discharge ventilation valve (11) and steam exhaust device (16), the admission end being pressed into steam control valve (13) and intermediate pressure cylinder (2) from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder (2) is connected by the admission end of middle pressure vapour butterfly valve (15) and low pressure (LP) cylinder (3), reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve (9) and low pressure (LP) cylinder (3), the exhaust steam end of low pressure (LP) cylinder (3) and steam exhaust device (16) connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve (10) and steam exhaust device (16).
2. a steam turbine with degree of depth peak regulating function and therrmodynamic system, it is characterized in that including high intermediate pressure cylinder (1a), low pressure (LP) cylinder (3), synchronize automatic clutch (5), first thrust bearing (6), second thrust bearing (7), intermediate pressure by-pass valve (9), high-pressure admission regulates valve (12), in be pressed into steam control valve (13), high pressure exhaust check valve (14), middle pressure vapour butterfly valve (15), steam exhaust device (16), in shaft system of unit, high intermediate pressure cylinder (1a) and low pressure (LP) cylinder (3) connect, synchronization automatic clutch (5) is set between high intermediate pressure cylinder (1a) and low pressure (LP) cylinder (3), high pressure exhaust region at high intermediate pressure cylinder (1a) is provided with the first thrust bearing (6), it is provided with the second thrust bearing (7) in the close automatic clutch side that synchronizes of low pressure (LP) cylinder (3), the high-pressure admission end that main steam line regulates valve (12) and high intermediate pressure cylinder (1a) by high-pressure admission connects, the high pressure exhaust steam end of high intermediate pressure cylinder (1a) is connected by high pressure exhaust check valve (14) and the pipeline to boiler reheater, main steam line and the pipeline to boiler reheater are connected by high pressure bypass valve (8), the middle pressure admission end being pressed into steam control valve (13) and high intermediate pressure cylinder (1a) from the reheaing steam pipe of boiler reheater in passing through connects, the middle pressure exhaust steam end of high intermediate pressure cylinder (1a) is connected by the admission end of middle pressure vapour butterfly valve (15) and low pressure (LP) cylinder (3), reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve (9) and low pressure (LP) cylinder (3), the exhaust steam end of low pressure (LP) cylinder (3) and steam exhaust device (16) connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve (10) and steam exhaust device (16).
3. a steam turbine with degree of depth peak regulating function and therrmodynamic system, it is characterized in that including high pressure cylinder (1), intermediate pressure cylinder (2), low pressure (LP) cylinder (3), intermediate pressure by-pass valve (9), high pressure steam discharge ventilation valve (11), high-pressure admission regulates valve (12), in be pressed into steam control valve (13), high pressure exhaust check valve (14), middle pressure vapour butterfly valve (15), steam exhaust device (16), reheated steam temperature-decreased pressure reducer (17), middle pressure vapour ventilation valve (18), in shaft system of unit, high pressure cylinder (1), intermediate pressure cylinder (2), low pressure (LP) cylinder (3) is sequentially connected with, the admission end that main steam line regulates valve (12) and high pressure cylinder (1) by high-pressure admission connects, the exhaust steam end of high pressure cylinder (1) is connected by high pressure exhaust check valve (14) and the pipeline to boiler reheater, main steam line is connected by high pressure bypass valve (8) and the pipeline to boiler reheater, the exhaust steam end of high pressure cylinder (1) is connected by high pressure steam discharge ventilation valve (11) and steam exhaust device (16), the admission end being pressed into steam control valve (13) and intermediate pressure cylinder (2) from the reheaing steam pipe of boiler reheater in passing through connects, the exhaust steam end of intermediate pressure cylinder (2) is connected by the admission end of middle pressure vapour butterfly valve (15) and low pressure (LP) cylinder (3), reheaing steam pipe from boiler reheater is connected by the admission end of intermediate pressure by-pass valve (9) and low pressure (LP) cylinder (3), reheaing steam pipe from boiler reheater is connected by the extraction line of reheated steam temperature-decreased pressure reducer (17) and intermediate pressure cylinder (2), the exhaust steam end of intermediate pressure cylinder (2) is connected by middle pressure vapour ventilation valve (18) and steam exhaust device (16), the exhaust steam end of low pressure (LP) cylinder (3) and steam exhaust device (16) connect, reheaing steam pipe from boiler reheater is connected by low voltage bypass valve (10) and steam exhaust device (16).
4. a kind of therrmodynamic system with degree of depth peak regulating function according to claim 1 or 2 or 3, it is characterised in that steam exhaust device (16), suitable in Direct Air-cooled Unit, is condenser when suitable in wet type cooling unit or indirect air cooling unit.
CN201610007552.4A 2016-01-07 2016-01-07 A kind of steam turbine and therrmodynamic system with depth peak regulating function Active CN105673101B (en)

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CN106988795A (en) * 2017-04-14 2017-07-28 高文松 A kind of turbine system
CN107035439A (en) * 2017-06-27 2017-08-11 中国船舶重工集团公司第七�三研究所 A kind of condensing turbine exhaust casing cooling system
CN107060918A (en) * 2017-04-14 2017-08-18 贵州电网有限责任公司电力科学研究院 A kind of many low pressure (LP) cylinder steam turbine generator set system optimization device and methods
CN107559056A (en) * 2017-08-30 2018-01-09 联合瑞升(北京)科技有限公司 A kind of increasing steam turbine system and adjusting method with AGC functions
CN108019246A (en) * 2016-10-31 2018-05-11 中国电力工程顾问集团华北电力设计院有限公司 Suitable for the therrmodynamic system and its peak regulating method of thermal power plant unit depth peak regulation
CN108561196A (en) * 2018-03-06 2018-09-21 辽宁东方发电有限公司 Fired power generating unit cuts off the safety protection system and method for low pressure (LP) cylinder operation
CN108661726A (en) * 2018-07-24 2018-10-16 华能国际电力股份有限公司 A kind of low pressure cylinder cooling system that thermal power plant unit low pressure (LP) cylinder zero is contributed
CN108678821A (en) * 2018-05-11 2018-10-19 华电能源股份有限公司富拉尔基发电厂 A kind of steam turbine start and stop peak regulation heating system for realizing the decoupling of fired power generating unit thermoelectricity
CN108868921A (en) * 2018-07-12 2018-11-23 广西电网有限责任公司电力科学研究院 A kind of large size pure condensed steam formula Turbo-generator Set heating system and heat supply method
CN109113818A (en) * 2017-06-26 2019-01-01 中国电力工程顾问集团华北电力设计院有限公司 A kind of enhancing power plant flexibility therrmodynamic system
CN109184831A (en) * 2018-10-17 2019-01-11 中国船舶重工集团公司第七0三研究所 It a kind of energy supply side can multipotency switching, the hot energy storage multipotency supply system of decoupling type
CN109469522A (en) * 2018-12-12 2019-03-15 西安热工研究院有限公司 A kind of steam exhaust cooling system and steam exhaust cooling means
CN111042880A (en) * 2018-10-12 2020-04-21 上海明华电力技术工程有限公司 Wide-load high-efficiency steam turbine set with high-pressure cylinders coaxially arranged in separate cylinders
CN111042881A (en) * 2018-10-12 2020-04-21 上海明华电力技术工程有限公司 Wide-load high-efficiency steam turbine generator unit with part of cylinders capable of being cut off
CN111102024A (en) * 2019-12-17 2020-05-05 浙江浙能技术研究院有限公司 High-pressure-rise RB (radio frequency) comprehensive control device and method based on boiler following strategy
CN112555803A (en) * 2020-12-08 2021-03-26 西安热工研究院有限公司 Thermoelectric generator set feed water bypass and variable main reheat steam temperature wide-range adjusting system
CN112610292A (en) * 2020-12-11 2021-04-06 北京前沿动力科技股份有限公司 Deep peak regulation power generation system
CN113027550A (en) * 2021-03-22 2021-06-25 西安热工研究院有限公司 High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method
CN113027553A (en) * 2021-03-22 2021-06-25 西安热工研究院有限公司 System for improving unit operation economy and flexibility
CN113503194A (en) * 2021-08-11 2021-10-15 山东大学 Full-load deep peak regulation device and method for steam turbine
CN114635762A (en) * 2022-02-23 2022-06-17 杭州汽轮机股份有限公司 Emergency shutdown system of negative-pressure steam-admission condensing steam turbine
CN114687815A (en) * 2022-04-24 2022-07-01 中国船舶重工集团公司第七0三研究所 Simple low-pressure cylinder cooling steam system of double-low-pressure-cylinder zero-output steam turbine set
CN114991894A (en) * 2022-04-27 2022-09-02 东方电气集团东方汽轮机有限公司 Turbine system with high load rate at full operation section of limited volume working medium and operation method

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CN108019246A (en) * 2016-10-31 2018-05-11 中国电力工程顾问集团华北电力设计院有限公司 Suitable for the therrmodynamic system and its peak regulating method of thermal power plant unit depth peak regulation
CN106988795A (en) * 2017-04-14 2017-07-28 高文松 A kind of turbine system
CN107060918A (en) * 2017-04-14 2017-08-18 贵州电网有限责任公司电力科学研究院 A kind of many low pressure (LP) cylinder steam turbine generator set system optimization device and methods
CN106949445B (en) * 2017-04-26 2022-11-15 西安西热节能技术有限公司 Fused salt heat storage type peak regulation system and method for coal-fired power generating unit
CN106949445A (en) * 2017-04-26 2017-07-14 西安西热节能技术有限公司 A kind of Thermal generation unit fuse salt heat storage type peak regulation system and method
CN109113818A (en) * 2017-06-26 2019-01-01 中国电力工程顾问集团华北电力设计院有限公司 A kind of enhancing power plant flexibility therrmodynamic system
CN107035439A (en) * 2017-06-27 2017-08-11 中国船舶重工集团公司第七�三研究所 A kind of condensing turbine exhaust casing cooling system
CN107035439B (en) * 2017-06-27 2023-09-12 中国船舶重工集团公司第七�三研究所 Rear cylinder cooling system of condensing steam turbine
CN107559056A (en) * 2017-08-30 2018-01-09 联合瑞升(北京)科技有限公司 A kind of increasing steam turbine system and adjusting method with AGC functions
CN107559056B (en) * 2017-08-30 2023-09-08 联合瑞升(北京)科技有限公司 Steam turbine increasing system with AGC function and adjusting method
CN108561196A (en) * 2018-03-06 2018-09-21 辽宁东方发电有限公司 Fired power generating unit cuts off the safety protection system and method for low pressure (LP) cylinder operation
CN108561196B (en) * 2018-03-06 2024-02-20 辽宁东方发电有限公司 Safety protection system and method for cutting off operation of low-pressure cylinder of thermal power generating unit
CN108678821A (en) * 2018-05-11 2018-10-19 华电能源股份有限公司富拉尔基发电厂 A kind of steam turbine start and stop peak regulation heating system for realizing the decoupling of fired power generating unit thermoelectricity
CN108868921A (en) * 2018-07-12 2018-11-23 广西电网有限责任公司电力科学研究院 A kind of large size pure condensed steam formula Turbo-generator Set heating system and heat supply method
CN108661726B (en) * 2018-07-24 2023-09-01 华能国际电力股份有限公司 Low-pressure cylinder cooling system with zero output of low-pressure cylinder of heat supply unit
CN108661726A (en) * 2018-07-24 2018-10-16 华能国际电力股份有限公司 A kind of low pressure cylinder cooling system that thermal power plant unit low pressure (LP) cylinder zero is contributed
CN111042881A (en) * 2018-10-12 2020-04-21 上海明华电力技术工程有限公司 Wide-load high-efficiency steam turbine generator unit with part of cylinders capable of being cut off
CN111042880B (en) * 2018-10-12 2024-04-05 上海明华电力科技有限公司 Wide-load efficient turbine unit with high-pressure cylinders coaxially distributed in separate cylinders
CN111042880A (en) * 2018-10-12 2020-04-21 上海明华电力技术工程有限公司 Wide-load high-efficiency steam turbine set with high-pressure cylinders coaxially arranged in separate cylinders
CN109184831B (en) * 2018-10-17 2023-10-20 中国船舶重工集团公司第七0三研究所 Energy supply side multi-energy switching and decoupling type heat energy storage multi-energy supply system
CN109184831A (en) * 2018-10-17 2019-01-11 中国船舶重工集团公司第七0三研究所 It a kind of energy supply side can multipotency switching, the hot energy storage multipotency supply system of decoupling type
CN109469522A (en) * 2018-12-12 2019-03-15 西安热工研究院有限公司 A kind of steam exhaust cooling system and steam exhaust cooling means
CN111102024A (en) * 2019-12-17 2020-05-05 浙江浙能技术研究院有限公司 High-pressure-rise RB (radio frequency) comprehensive control device and method based on boiler following strategy
CN112555803A (en) * 2020-12-08 2021-03-26 西安热工研究院有限公司 Thermoelectric generator set feed water bypass and variable main reheat steam temperature wide-range adjusting system
CN112555803B (en) * 2020-12-08 2022-11-22 西安热工研究院有限公司 Thermoelectric unit feedwater bypass and become owner reheat steam temperature wide region adjustment system
CN112610292A (en) * 2020-12-11 2021-04-06 北京前沿动力科技股份有限公司 Deep peak regulation power generation system
CN113027550A (en) * 2021-03-22 2021-06-25 西安热工研究院有限公司 High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method
CN113027550B (en) * 2021-03-22 2022-08-30 西安热工研究院有限公司 High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method
CN113027553A (en) * 2021-03-22 2021-06-25 西安热工研究院有限公司 System for improving unit operation economy and flexibility
CN113503194B (en) * 2021-08-11 2023-02-24 山东大学 Full-load deep peak regulation device and method for steam turbine
CN113503194A (en) * 2021-08-11 2021-10-15 山东大学 Full-load deep peak regulation device and method for steam turbine
CN114635762A (en) * 2022-02-23 2022-06-17 杭州汽轮机股份有限公司 Emergency shutdown system of negative-pressure steam-admission condensing steam turbine
CN114635762B (en) * 2022-02-23 2024-03-29 杭州汽轮动力集团股份有限公司 Emergency shutdown system of negative pressure steam inlet condensing steam turbine
CN114687815A (en) * 2022-04-24 2022-07-01 中国船舶重工集团公司第七0三研究所 Simple low-pressure cylinder cooling steam system of double-low-pressure-cylinder zero-output steam turbine set
CN114991894B (en) * 2022-04-27 2023-07-04 东方电气集团东方汽轮机有限公司 Turbine system with limited volume working medium full-operation section and high load rate and operation method
CN114991894A (en) * 2022-04-27 2022-09-02 东方电气集团东方汽轮机有限公司 Turbine system with high load rate at full operation section of limited volume working medium and operation method

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