CN209726304U - A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation - Google Patents
A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation Download PDFInfo
- Publication number
- CN209726304U CN209726304U CN201920186740.7U CN201920186740U CN209726304U CN 209726304 U CN209726304 U CN 209726304U CN 201920186740 U CN201920186740 U CN 201920186740U CN 209726304 U CN209726304 U CN 209726304U
- Authority
- CN
- China
- Prior art keywords
- steam
- heat
- valves
- pipe
- connect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model relates to a kind of extraction for heat supply integrated systems for combined cycle unit power peak regulation, including gas turbine group and vapor wheel unit, based on cascaded utilization of energy principle, carry out the Integrated design of different steam extraction modes, combined cycle unit thermoelectricity decoupling service ability is effectively increased, has ensured resident's heating demand；In addition, coupling hot water hold over system simultaneously also in heating system and the feed water system of boiler, cooperate with matching of the combined cycle unit power peak regulation with heat supply has not only been realized, but also increase power peak regulation ability of the combined cycle unit when pure condensate operating condition is run.After having used the utility model, while depth excavation combined cycle unit external heat capacity, the acting capacity loss in heat supplying process is effectively reduced.The power peak regulation Policy Demand for especially meeting current rigorous realizes the depth peak modulation capacity of fired power generating unit, meets demand of the power grid to peak load regulation conscientiously, is worth with practice higher.
Description
Technical field
The utility model belongs to cogeneration of heat and power technical field, and in particular to a kind of for combined cycle unit power peak regulation
Extraction for heat supply integrated system.
Background technique
Currently, China's policy gradually payes attention to the popularization of new energy, the ratio of fired power generating unit is reduced, so that the hair of fired power generating unit
Exhibition faces a severe test.Currently, to improve the comprehensive energy utilization efficiency of fired power generating unit, and strive for more gas-to electricity hours
Number, depth excavate the heat capacity of fired power generating unit, increasingly obtain the attention of various circles of society.Gas cogeneration is a kind of heat
The energy utilization type that energy, electric energy produce simultaneously, high-grade thermal energy is used to generate electricity by it, and low-grade thermal energy is used for heat supply,
Not only the utilization efficiency of the energy had been improved, but also has reduced environmental pollution, had been had in terms of energy-saving and reduce disposal of pollutants very big
Application value.
Currently, the main problems faced of gas cogeneration central heating system is that hotspot stress is relatively low, conventional combustion gas thermoelectricity
Thermoelectricity ratio caused by coproduction combination, which has, centainly limits to, and advanced, high conversion efficiency unit, hotspot stress is got over
Small, by taking 100,000 kW units as an example, hotspot stress is 0.7 or so.Under the severe situation for especially facing Present Thermal Power depth peak regulation,
Unit is often run with running on the lower load, and the external heat capacity of unit is lower at this time, thus causes serious shadow to for thermal safety
It rings.However, the prior art such as patent " a kind of cogeneration system of combined cycle (patent No. 201310401252.0) ", is benefit
With external heat supply after height row's steam extraction pressure and temperature reducing, which is: (1) not considering that the cascade utilization of energy, direct desuperheat subtract
The acting capacity loss of pressure is larger；(2) thermoelectricity depth peak regulation needs are not considered, and to meet extraneous heat supply, unit need to be with high load capacity
Operation, peak load regulation ability are poor.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally,
The extraction for heat supply integrated system for combined cycle unit power peak regulation of reliable performance.
The technical scheme in the invention for solving the above technical problem is: one kind being used for combined cycle unit power peak regulation
Extraction for heat supply integrated system characterized by comprising gas turbine group and vapor wheel unit；
The gas turbine group includes gas turbine blower, gas-turbine combustion chamber, gas turbine turbine and the first hair
Motor, the exhaust outlet of the gas turbine blower and the air inlet of gas-turbine combustion chamber connect, the gas turbine combustion
The exhaust outlet of room is connect with the air inlet of gas turbine turbine, the exhaust outlet of the gas turbine turbine by smoke discharge pipe with
The gas inlet of waste heat boiler connects, and the gas turbine turbine drives the first electrical power generators, and gas turbine turbine and combustion
Gas-turbine compressor is coaxially connected；
The vapor wheel unit includes waste heat boiler, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, turbine low pressure cylinder,
Two generators, condenser, condensate pump, hot water heat exchanger, gland heater, oxygen-eliminating device, the first reducing-and-cooling plant, second subtract
Warm decompressor, third reducing-and-cooling plant, work device, power-equipment, heat exchangers for district heating, hydrophobic heat exchanger, heat supply network circulation
Pump, first circulation pump, hot water heat accumulator, second circulation pump and radiator, the steam turbine high-pressure cylinder, Steam Turbine Through IP Admission and vapour
Turbine low pressure (LP) cylinder is coaxially connected, and drive the second electrical power generators, the waste heat boiler include smoke-gas preheater, low-pressure drum,
Low-pressure superheater, HP steam drum, reheater and high-pressure superheater, the water outlet of the smoke-gas preheater simultaneously with low-pressure drum
Water inlet is connected with the water inlet of HP steam drum, and the venthole of the low-pressure drum and the air intake of low-pressure superheater connect, institute
The air intake of the venthole and high-pressure superheater of stating HP steam drum connects, and the air intake of the steam turbine high-pressure cylinder is steamed by high pressure
The connection of the venthole of steam pipe and high-pressure superheater, and No.1 valve, the steamer are installed in the air intake of steam turbine high-pressure cylinder
The steam drain of machine high pressure cylinder is connected by the air intake of cold steam pipe again and reheater, and is equipped with four in the air intake of reheater
Number valve, by heat, steam pipe and the air intake of Steam Turbine Through IP Admission connect the venthole of the reheater again, and in steam turbine
The air intake of intermediate pressure cylinder is equipped with No. six valves, and the steam drain of the Steam Turbine Through IP Admission passes through communicating pipe and turbine low pressure cylinder
Air intake connection, and hydraulic pressure butterfly valve is installed in the air intake of turbine low pressure cylinder, the communicating pipe and low pressure steam pipe
One end connection, and ten No. four valves are installed in one end of low pressure steam pipe, the venthole and low pressure of the low-pressure superheater steam
The other end of steam pipe connects, and is equipped with ten No. five valves, the row of the turbine low pressure cylinder in the other end of low pressure steam pipe
Steam ports is connect with condenser, and the water inlet end of boiler feed pipe is connect with condenser, the water outlet of the boiler feed pipe and flue gas
The water inlet of preheater connects, and is sequentially installed with condensate pump, hot water heat exchange along water flowing direction on boiler feed pipe
The admission end of device, gland heater and oxygen-eliminating device, high steam bypass is connect with high-pressure steam pipe, the high steam bypass
Steam output end is connect with the admission end of the first middle pressure steam branch pipe, and is successively pacified in high steam bypass along steam flow direction
Equipped with No. two valves, the first reducing-and-cooling plant and No. three valves, the steam output end of the first middle pressure steam branch pipe subtracts with third
The air intake of warm decompressor connects, and No. nine valves are equipped on the first middle pressure steam branch pipe, cold steam by-pass again into
Vapour end is connect with cold steam pipe again, and the steam output end of the cold steam by-pass again is connect with the admission end of the first middle pressure steam branch pipe,
And No. five valves are installed in cold steam by-pass again, steam pipe is connect the admission end of steam by-pass heat again with heat again, the heat
The steam output end of steam by-pass is connect with the admission end of the first middle pressure steam branch pipe again, and along steam stream in heat again steam by-pass
Dynamic direction is sequentially installed with No. seven valves, the second reducing-and-cooling plant and No. eight valves, the admission end of low-pressure steam bypass with it is low
Steam pipe connection is pressed, the steam output end of the low-pressure steam bypass is connect with the admission end of heating extraction steam pipe, and by low-pressure steam
Road is equipped with ten No. three valves, and the steam output end of the heating extraction steam pipe and the air intake of heat exchangers for district heating connect, and in heating
Ten No. seven valves are installed, the venthole of the third reducing-and-cooling plant and the admission end of heating extraction steam pipe connect on extraction steam pipe
It connects, and No. ten valves, the admission end and first of the second middle pressure steam branch pipe is installed in the venthole of third reducing-and-cooling plant
The admission end of middle pressure steam branch pipe connects, and is equipped with ride on Bus No. 11 valve on the second middle pressure steam branch pipe, presses in described second
The steam output end of steam branch pipe and the air intake of work device connect, and the venthole of work device and the admission end of heating extraction steam pipe connect
It connects, and ten No. two valves, the hydrophobic outlet of the heat exchangers for district heating and hydrophobic heat exchanger is installed in the venthole of work device
High temperature hydrophobic import connection, the hydrophobic outlet of the low temperature of hydrophobic heat exchanger connected by the water inlet of drain pipe and condensate pump,
And ten No. eight valves are installed on drain pipe, the water at low temperature side-entrance connection of heat supply network return pipe and hydrophobic heat exchanger, and dredging
The water at low temperature side-entrance of water- to-water heat exchanger is equipped with 30 No. four valves, and ten No. nine valves and heat supply network are equipped on heat supply network return pipe
The water side-entrance of circulating pump, the water at low temperature side outlet and heat exchangers for district heating of the hydrophobic heat exchanger connects, the water of heat exchangers for district heating
Side outlet is connect with heat supply network water supplying pipe, and is separately installed with 35 on the water side outlet and heat supply network water supplying pipe of heat exchangers for district heating
The Single port of number valve and two No. ten valves, the hot water heat accumulator is low with one end of accumulation of heat low temperature water pipe and the first accumulation of heat simultaneously
One end of warm branch pipe connects, and the another port of hot water heat accumulator is connect with one end of accumulation of heat high-temperature conduit, the accumulation of heat water at low temperature
The other end of pipe and the water at low temperature side-entrance of hydrophobic heat exchanger connect, and first circulation pump is equipped on accumulation of heat low temperature water pipe,
The first circulation pump is provided with the bypass of accumulation of heat low temperature, and divides in import, outlet and accumulation of heat the low temperature bypass of first circulation pump
20 No. three valves, 20 No. two valves and two ride on Bus No. 11 valves, the other end of the first accumulation of heat low temperature branch pipe are not installed
It is connect with the high-temperature water side outlet of hot water heat exchanger, and 20 No. seven valves is installed on the first accumulation of heat low temperature branch pipe, it is described
The other end of accumulation of heat high-temperature conduit is connect with heat supply network water supplying pipe, and second circulation pump is equipped on accumulation of heat high-temperature conduit, described
Second circulation pump is provided with the bypass of accumulation of heat high temperature, and pacifies respectively in import, outlet and accumulation of heat the high temperature bypass of second circulation pump
Equipped with 20 No. four valves, 20 No. five valves and 20 No. six valves, the outlet of second circulation pump also with the first accumulation of heat
One end of high temperature branch pipe connects, and the high-temperature water side-entrance of the other end and hot water heat exchanger of the first accumulation of heat high temperature branch pipe connects, and
20 No. eight valves are installed on the first accumulation of heat high temperature branch pipe.
Furthermore, the oxygen-eliminating device is subtracted with the steam output end of low-pressure steam bypass, third simultaneously by deoxygenation extraction steam pipe
The venthole of warm decompressor, the venthole of work device connect with heating extraction steam pipe, and are equipped with ten on deoxygenation extraction steam pipe
No. six valves.
Furthermore, the work device driving power-equipment does work, and work device is that back pressure machine or screw rod are swollen
Swollen machine, power-equipment are the equipment such as generator, condensate pump, pumps for hot water supply net, first circulation pump and second circulation pump.
Furthermore, the third reducing-and-cooling plant is connected in parallel with work device, while being oxygen-eliminating device and heat
Steam required for net heater provides.
Furthermore, the admission end of the second middle pressure steam branch pipe simultaneously also with high steam bypass steam output end,
The steam output end of cold steam by-pass again is connected with the steam output end of hot steam by-pass again.
Furthermore, the water at low temperature side of the hot water heat exchanger is provided with feed pipe bypass, and in hot water heat exchanger
20 No. nine valves, three No. ten valves and three are separately installed in water at low temperature side-entrance, water at low temperature side outlet and feed pipe bypass
Ride on Bus No. 11 valve.
Furthermore, one end of the hot water heat accumulator is also connect with one end of the second accumulation of heat low temperature branch pipe, and second stores
The other end of hot low temperature branch pipe and the water outlet of radiator connect, and are equipped with 30 No. three valves on the second accumulation of heat low temperature branch pipe
Door；The outlet of second circulation pump is also connect with one end of the second accumulation of heat high temperature branch pipe, the second accumulation of heat high temperature branch pipe it is another
End is connect with the water inlet of radiator, and is equipped with 30 No. two valves on the second accumulation of heat high temperature branch pipe.
The operation method of the above-mentioned extraction for heat supply integrated system for combined cycle unit power peak regulation is as follows:
When unit is in pure condensate operating condition, when unregulated power peak regulation demand, operate as follows:
Only open No.1 valve, No. four valves, No. six valves, ten No. three valves, hydraulic pressure butterfly valve, ten No. four valves, 15
Number valve, ten No. six valves and three ride on Bus No. 11 valves, combined cycle unit do not carry out heat supply, and the deoxygenation steam of oxygen-eliminating device externally
From the low pressure filling of low-pressure superheater or the steam discharge of Steam Turbine Through IP Admission；
When unit is in pure condensate operating condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, then the steaming of steam turbine acting is lowered by steam extraction accumulation of heat
Steam flow amount carries out accumulation of heat by hot water heat accumulator at this time, operates as follows:
Open ten No. three valves and ten No. seven valves, using from low-pressure superheater low pressure filling or steam turbine in press
The steam discharge of cylinder is as heating steam required for heat exchangers for district heating；Open simultaneously 20 No. two valves, 20 No. three valves, 20
No. six valves, 30 No. four valves and 30 No. five valves, by first circulation pump by the water at low temperature from hot water heat accumulator according to
Secondary be delivered in hydrophobic heat exchanger and heat exchangers for district heating is heated, and enters back into hot water heat accumulator after formation high-temperature water and is stored；
Or No. nine valves, No. ten valves and ten No. seven valves are opened, middle pressure steam enters third reducing-and-cooling plant warp
Low-pressure steam is formed after crossing pressure and temperature reducing, heat exchangers for district heating is then delivered to by heating extraction steam pipe；Open simultaneously 20 No. two valves
Door, 20 No. three valves, 20 No. six valves, 30 No. four valves and 30 No. five valves, from utilization hot water heat accumulator
Water at low temperature sequentially enters hydrophobic heat exchanger and heat exchangers for district heating is heated, and enters back into hot water heat accumulator after formation high-temperature water and is deposited
Storage；
Or ride on Bus No. 11 valve, ten No. two valves and ten No. seven valves are opened, it is dynamic that middle pressure steam enters work device driving
Low-pressure steam is formed after the acting of power equipment, then heat exchangers for district heating is delivered to by heating extraction steam pipe；Open simultaneously 20 No. two valves,
20 No. three valves, 20 No. six valves, 30 No. four valves and 30 No. five valves, from the low temperature using hot water heat accumulator
Water sequentially enters hydrophobic heat exchanger and heat exchangers for district heating is heated, and enters back into hot water heat accumulator after formation high-temperature water and is stored；
B, when unit needs to increase externally output electric load, steam extraction accumulation of heat is no longer carried out at this time, to increase into steamer
The steam flow of machine acting, carries out heat release to hot water heat accumulator at this time, operates as follows:
20 No. four valves, 20 No. seven valves and 20 No. eight valves are opened, hot water will be come from by second circulation pump
The high-temperature water of storage heater is delivered to hot water heat exchanger and carries out heat release, opens simultaneously 20 No. nine valves and three No. ten valves, closes
Three ride on Bus No. 11 valves, boiler feedwater are introduced into hot water heat exchanger and are heated by the high-temperature water from hot water heat accumulator；
Or 20 No. four valves, 30 No. two valves and 30 No. three valves are opened, it will be come from by second circulation pump
The high-temperature water of hot water heat accumulator is delivered to radiator and carries out heat release；
When unit is in supplying thermal condition, when unregulated power peak regulation demand, operate as follows:
Only open No.1 valve, No. four valves, No. six valves, ten No. three valves, hydraulic pressure butterfly valve, ten No. four valves, 15
Number valve, ten No. six valves, ten No. seven valves, ten No. nine valves, two No. ten valves, three ride on Bus No. 11 valves, 30 No. four valves
With 30 No. five valves, combined cycle unit is external merely with the low pressure filling of low-pressure superheater or the steam discharge of Steam Turbine Through IP Admission
Heat supply, and the deoxygenation steam of oxygen-eliminating device is from the low pressure filling of low-pressure superheater or the steam discharge of Steam Turbine Through IP Admission；
When unit is in supplying thermal condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, then the steaming of steam turbine acting is lowered by steam extraction accumulation of heat
Steam flow amount carries out accumulation of heat by hot water heat accumulator at this time, operates as follows:
Open ten No. three valves and ten No. seven valves, using from low-pressure superheater low pressure filling or steam turbine in press
The steam discharge of cylinder is as heating steam required for heat exchangers for district heating；Open ten No. nine valves, two No. ten valves, 30 No. four valves
With 30 No. five valves, the hot net water from heat supply network return pipe sequentially enters hydrophobic heat exchanger and heat exchangers for district heating is heated, shape
It is externally confessed at heat supply network water supplying pipe is passed through after high temperature hot net water；Open simultaneously 20 No. two valves, 20 No. three valves and 20
Water at low temperature from hot water heat accumulator is successively delivered to hydrophobic heat exchanger by first circulation pump and heat supply network heats by No. six valves
It is heated in device, enters back into hot water heat accumulator after formation high-temperature water and stored；
Or No. nine valves, No. ten valves and ten No. seven valves are opened, middle pressure steam enters third reducing-and-cooling plant warp
Low-pressure steam is formed after crossing pressure and temperature reducing, heat exchangers for district heating is then delivered to by heating extraction steam pipe；Open ten No. nine valves, 20
Number valve, 30 No. four valves and 30 No. five valves, the hot net water from heat supply network return pipe sequentially enter hydrophobic heat exchanger and
Heat exchangers for district heating is heated, and is externally confessed after forming high temperature hot net water by heat supply network water supplying pipe；Open simultaneously 20 No. two valves,
20 No. three valves and 20 No. six valves, from sequentially entering hydrophobic heat exchanger and heat supply network using the water at low temperature of hot water heat accumulator
Heater is heated, and is entered back into hot water heat accumulator after formation high-temperature water and is stored；
Or ride on Bus No. 11 valve, ten No. two valves and ten No. seven valves are opened, it is dynamic that middle pressure steam enters work device driving
Low-pressure steam is formed after the acting of power equipment, then heat exchangers for district heating is delivered to by heating extraction steam pipe；Open ten No. nine valves, two No. ten
Valve, 30 No. four valves and 30 No. five valves, the hot net water from heat supply network return pipe sequentially enter hydrophobic heat exchanger and heat
Net heater is heated, and is externally confessed after forming high temperature hot net water by heat supply network water supplying pipe；Open simultaneously 20 No. two valves, two
Ten No. three valves and 20 No. six valves, sequentially enter hydrophobic heat exchanger from the water at low temperature using hot water heat accumulator and heat supply network add
Hot device is heated, and is entered back into hot water heat accumulator after formation high-temperature water and is stored；
B, when unit needs to increase externally output electric load, steam extraction accumulation of heat is no longer carried out at this time, while utilizing hot water accumulation of heat
Device heat release carrys out external heat supply, to increase the steam flow to do work into steam turbine, operates as follows:
Ten No. seven valves are closed, stop using the steam extraction of unit opening ten No. nine valves, two No. ten at this time come external heat supply
Valve, two ride on Bus No. 11 valves, 20 No. four valves and 20 No. five valves, will be from hot water heat accumulator by second circulation pump
High-temperature water is delivered to the external heat supply of heat supply network water supplying pipe；
Or 20 No. four valves, 20 No. seven valves and 20 No. eight valves are opened, it will be come from by second circulation pump
The high-temperature water of hot water heat accumulator is delivered to hot water heat exchanger and carries out heat release, opens simultaneously 20 No. nine valves and three No. ten valves,
Three ride on Bus No. 11 valves are closed, boiler feedwater is introduced into hot water heat exchanger and is heated by the high-temperature water from hot water heat accumulator；
Or 20 No. four valves, 30 No. two valves and 30 No. three valves are opened, it will be come from by second circulation pump
The high-temperature water of hot water heat accumulator is delivered to radiator and carries out heat release.
In the operation method of the above-mentioned extraction for heat supply integrated system for combined cycle unit power peak regulation:
When unit has power peak regulation demand, the operation of middle pressure steam is provided for third reducing-and-cooling plant and work device
Steps are as follows:
No. five valves are opened, directly as third reducing-and-cooling plant and are done using the steam discharge from steam turbine high-pressure cylinder
The middle pressure steam source of function equipment；
Alternatively, opening No. seven valves and No. eight valves, steam passes through the second reducing-and-cooling plant to the heat from reheater again
The lower steam of pressure and temperature, the middle pressure steam source as third reducing-and-cooling plant and work device are formed afterwards；
Alternatively, opening No. two valves and No. three valves, the main steam from high-pressure superheater is filled by the first pressure and temperature reducing
It postpones to form the lower steam of pressure and temperature, the middle pressure steam source as third reducing-and-cooling plant and work device；
When unit unregulated power peak regulation demand, the exothermic selection method of hot water heat accumulator is as follows:
In pure condensate operating condition, simultaneous selection open radiator and open hot water heat exchanger, or selection open radiator and
The one of which of hot water heat exchanger is opened, the external heat release of hot water heat accumulator is used for；
In supplying thermal condition, simultaneous selection is by the external heat supply of heat supply network water supplying pipe, unlatching radiator and opens hot water heat exchange
Device, or the external heat supply of selection heat supply network water supplying pipe, the one of which for opening radiator and unlatching hot water heat exchanger, store for hot water
The hot external heat release of device.
In the operation method of the above-mentioned extraction for heat supply integrated system for combined cycle unit power peak regulation:
When unit provides heating steam for heat exchangers for district heating, the low pressure filling of preferential Selection utilization low-pressure superheater or vapour
The steam discharge of turbine intermediate pressure cylinder, secondly the steam discharge of Selection utilization work device, last Selection utilization third reducing-and-cooling plant subtract
Warm throttled steam；
When unit provides middle pressure steam for third reducing-and-cooling plant and work device, preferential Selection utilization steam turbine is high
The high pressure steam discharge of cylinder pressure, the hot steam again of next Selection utilization reheater, the main steam of last Selection utilization high-pressure superheater；
In pure condensate operating condition, preferential selection opens hot water heat exchanger to be used for the external heat release of hot water heat accumulator, secondly selects
Radiator is opened to be used for the external heat release of hot water heat accumulator；
In supplying thermal condition, preferential selection is used for the external heat release of hot water heat accumulator by the external heat supply of heat supply network water supplying pipe,
Secondly selection opens hot water heat exchanger to be used for the external heat release of hot water heat accumulator, and finally selection is opened radiator and stored to be used for hot water
The hot external heat release of device.
The utility model compared with prior art, has the following advantages that and effect: structure is simple, and rationally, performance can for design
It leans on, is based on cascaded utilization of energy principle, carries out the Integrated design of different steam extraction modes, effectively increase combined cycle unit thermoelectricity
Service ability is decoupled, has ensured resident's heating demand；In addition, coupling hot water simultaneously also in heating system and the feed water system of boiler
Hold over system had not only realized cooperate with matching of the combined cycle unit power peak regulation with heat supply, but also increased combined cycle unit in pure condensate
Power peak regulation ability when operating condition is run.After having used the utility model, the external heat supply of combined cycle unit is excavated in depth
While ability, the acting capacity loss in heat supplying process is effectively reduced.Especially meet the power peak regulation political affairs of current rigorous
Plan demand realizes the depth peak modulation capacity of fired power generating unit, meets demand of the power grid to peak load regulation conscientiously, has real higher
Border applying value.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
The extraction for heat supply integrated system for combined cycle unit power peak regulation referring to Fig. 1, in the present embodiment, comprising:
Gas turbine group and vapor wheel unit；
Gas turbine group includes gas turbine blower 1, gas-turbine combustion chamber 2, gas turbine turbine 3 and the first power generation
The exhaust outlet of machine 4, gas turbine blower 1 is connect with the air inlet of gas-turbine combustion chamber 2, the row of gas-turbine combustion chamber 2
Port is connect with the air inlet of gas turbine turbine 3, and the exhaust outlet of gas turbine turbine 3 passes through smoke discharge pipe 31 and waste heat pot
The gas inlet of furnace 5 connects, and gas turbine turbine 3 drives the power generation of the first generator 4, and gas turbine turbine 3 and gas turbine
Compressor 1 is coaxially connected；
Vapor wheel unit includes waste heat boiler 5, steam turbine high-pressure cylinder 6, Steam Turbine Through IP Admission 7, turbine low pressure cylinder 8,
Two generators 9, condenser 10, condensate pump 11, hot water heat exchanger 12, gland heater 13, oxygen-eliminating device 14, the first pressure and temperature reducing
Device 15, the second reducing-and-cooling plant 16, third reducing-and-cooling plant 17, work device 18, power-equipment 19, heat exchangers for district heating
20, hydrophobic heat exchanger 21, pumps for hot water supply net 22, first circulation pump 23, hot water heat accumulator 24, second circulation pump 25 and radiator
26, steam turbine high-pressure cylinder 6, Steam Turbine Through IP Admission 7 and turbine low pressure cylinder 8 are coaxially connected, and drive the power generation of the second generator 9,
Waste heat boiler 5 includes smoke-gas preheater 501, low-pressure drum 502, low-pressure superheater 503, HP steam drum 504,505 and of reheater
High-pressure superheater 506, the water outlet of smoke-gas preheater 501 simultaneously with the water inlet of low-pressure drum 502 and HP steam drum 504 into
Mouth of a river connection, the venthole of low-pressure drum 502 connect with the air intake of low-pressure superheater 503, the venthole of HP steam drum 504 and
The air intake of high-pressure superheater 506 connects, and the air intake of steam turbine high-pressure cylinder 6 passes through high-pressure steam pipe 33 and high-pressure superheater
506 venthole connection, and No.1 valve 61, the steam discharge of steam turbine high-pressure cylinder 6 are installed in the air intake of steam turbine high-pressure cylinder 6
Mouth is connect by cold steam pipe again 34 with the air intake of reheater 505, and is equipped with No. four valves in the air intake of reheater 505
64, by heat, steam pipe 35 is connect the venthole of reheater 505 with the air intake of Steam Turbine Through IP Admission 7 again, and in steam turbine
The air intake of cylinder pressure 7 is equipped with No. six valves 66, and the steam drain of Steam Turbine Through IP Admission 7 passes through communicating pipe 36 and turbine low pressure cylinder
8 air intake connection, and hydraulic pressure butterfly valve 74, communicating pipe 36 and low pressure steam pipe are installed in the air intake of turbine low pressure cylinder 8
37 one end connection, and be equipped with ten No. four valves 75 in one end of low pressure steam pipe 37, the venthole of low-pressure superheater 503 with
The other end of low pressure steam pipe 37 connects, and is equipped with ten No. five valves 76 in the other end of low pressure steam pipe 37, and steam turbine is low
The steam drain of cylinder pressure 8 is connect with condenser 10, and the water inlet end of boiler feed pipe 32 is connect with condenser 10, boiler feed pipe 32
Water outlet is connect with the water inlet of smoke-gas preheater 501, and is sequentially installed on boiler feed pipe 32 along water flowing direction
Condensate pump 11, hot water heat exchanger 12, gland heater 13 and oxygen-eliminating device 14, the admission end and high pressure of high steam bypass 38 steam
Steam pipe 33 connects, and the steam output end of high steam bypass 38 is connect with the admission end of the first middle pressure steam branch pipe 42, and steams in high pressure
No. two valves 62, the first reducing-and-cooling plant 15 and No. three valves are sequentially installed with along steam flow direction in vapour bypass 38
63, the steam output end of the first middle pressure steam branch pipe 42 is connect with the air intake of third reducing-and-cooling plant 17, and is pressed and steamed in first
No. nine valves 69 are installed, the admission end of cold steam by-pass again 39 is connect with cold steam pipe again 34, cold steam again on vapour branch pipe 42
The steam output end of bypass 39 is connect with the admission end of the first middle pressure steam branch pipe 42, and is equipped with No. five in cold steam by-pass again 39
Valve 65, steam pipe 35 is connect the admission end of steam by-pass 40 heat again with heat again, the hot steam output end of steam by-pass 40 and first again
The admission end of middle pressure steam branch pipe 42 connects, and is sequentially installed with No. seven along steam flow direction in heat again steam by-pass 40
Valve 67, the second reducing-and-cooling plant 16 and No. eight valves 68, the admission end and low pressure steam pipe 37 of low-pressure steam bypass 41 connect
It connects, the steam output end of low-pressure steam bypass 41 is connect with the admission end of heating extraction steam pipe 45, and is installed in low-pressure steam bypass 41
There are ten No. three valves 73, the steam output end of heating extraction steam pipe 45 is connect with the air intake of heat exchangers for district heating 20, and in heating extraction steam pipe
Ten No. seven valves 78 are installed on 45, the venthole of third reducing-and-cooling plant 17 is connect with the admission end of heating extraction steam pipe 45,
And No. ten valves 70, the admission end of the second middle pressure steam branch pipe 43 and are installed in the venthole of third reducing-and-cooling plant 17
The admission end of one middle pressure steam branch pipe 42 connects, and ride on Bus No. 11 valve 71 is equipped on the second middle pressure steam branch pipe 43, and second
The steam output end of middle pressure steam branch pipe 43 is connect with the air intake of work device 18, the venthole and heating extraction steam pipe of work device 18
45 admission end connection, and be equipped with ten No. two valves 72 in the venthole of work device 18, heat exchangers for district heating 20 it is hydrophobic go out
Mouth is connect with the hydrophobic import of the high temperature of hydrophobic heat exchanger 21, and the hydrophobic outlet of the low temperature of hydrophobic heat exchanger 21 is by drain pipe 46 and coagulates
The water inlet connection of pump 11 is born water, and ten No. eight valves 79 are installed on drain pipe 46, heat supply network return pipe 47 and hydrophobic heat exchange
The water at low temperature side-entrance of device 21 connects, and installs respectively in the water at low temperature side-entrance of hydrophobic heat exchanger 21 and heat supply network return pipe 47
There are 30 No. four valves, 95, ten No. nine valves 80 and pumps for hot water supply net 22, the water at low temperature side outlet and heat supply network of hydrophobic heat exchanger 21
The water side-entrance of heater 20 connects, and the water side outlet of heat exchangers for district heating 20 is connect with heat supply network water supplying pipe 48, and heats in heat supply network
30 No. five valve 96 and two No. ten valves 81, hot water accumulation of heat are separately installed on the water side outlet and heat supply network water supplying pipe 48 of device 20
The Single port of device 24 is connect with one end of one end of accumulation of heat low temperature water pipe 49 and the first accumulation of heat low temperature branch pipe 53 simultaneously, hot water accumulation of heat
The another port of device 24 is connect with one end of accumulation of heat high-temperature conduit 51, the other end and hydrophobic heat exchanger 21 of accumulation of heat low temperature water pipe 49
Water at low temperature side-entrance connection, and first circulation pump 23 is installed on accumulation of heat low temperature water pipe 49, first circulation pump 23 is provided with
Accumulation of heat low temperature bypass 50, and 23 are separately installed in the import in first circulation pump 23, outlet and accumulation of heat low temperature bypass 50
Number 84,20 No. two valves 83 of valve and two ride on Bus No. 11 valves 82, the other end and hot water of the first accumulation of heat low temperature branch pipe 53 exchange heat
The high-temperature water side outlet of device 12 connects, and is equipped with 20 No. seven valves 88, accumulation of heat high temperature on the first accumulation of heat low temperature branch pipe 53
The other end of water pipe 51 is connect with heat supply network water supplying pipe 48, and second circulation pump 25 is equipped on accumulation of heat high-temperature conduit 51, and second
Circulating pump 25 is provided with accumulation of heat high temperature bypass 52, and divides in the import in second circulation pump 25, outlet and accumulation of heat high temperature bypass 52
20 No. four valves, 85,20 No. five valve 86 and 20 No. six valves 87 are not installed, the outlet of second circulation pump 25 also with
One end of first accumulation of heat high temperature branch pipe 54 connects, the other end of the first accumulation of heat high temperature branch pipe 54 and the high-temperature water of hot water heat exchanger 12
Side-entrance connection, and 20 No. eight valves 89 are installed on the first accumulation of heat high temperature branch pipe 54.
Oxygen-eliminating device 14 bypasses 41 steam output end, third reducing-and-cooling plant by deoxygenation extraction steam pipe 44 with low-pressure steam simultaneously
17 venthole, the venthole of work device 18 and heating extraction steam pipe 45 connect, and are equipped with 16 on deoxygenation extraction steam pipe 44
Number valve 77.
Work device 18 drives power-equipment 19 to do work, and work device 18 is back pressure machine or screw expander, power
Equipment 19 is generator, condensate pump 11, pumps for hot water supply net 22, first circulation pump 23 or second circulation pump 25.
Third reducing-and-cooling plant 17 is connected in parallel with work device 18, while being oxygen-eliminating device 14 and heat exchangers for district heating 20
Steam required for providing.
The admission end of second middle pressure steam branch pipe 43 simultaneously also with the steam output end of high steam bypass 38, cold steam by-pass again
39 steam output end is connected with the steam output end of hot steam by-pass 40 again.
The water at low temperature side of hot water heat exchanger 12 be provided with feed pipe bypass 55, and the water at low temperature side of hot water heat exchanger 12 into
20 No. nine valves, 90, three No. ten valves 91 and 31 are separately installed in mouth, water at low temperature side outlet and feed pipe bypass 55
Number valve 92.
One end of hot water heat accumulator 24 is also connect with one end of the second accumulation of heat low temperature branch pipe 57, the second accumulation of heat low temperature branch pipe 57
The other end connect with the water outlet of radiator 26, and 30 No. three valves 94 are installed on the second accumulation of heat low temperature branch pipe 57；
The outlet of second circulation pump 25 is also connect with one end of the second accumulation of heat high temperature branch pipe 56, the other end of the second accumulation of heat high temperature branch pipe 56
It is connect with the water inlet of radiator 26, and 30 No. two valves 93 is installed on the second accumulation of heat high temperature branch pipe 56.
In the present embodiment, carrying out practically method is as follows:
When unit is in pure condensate operating condition, when unregulated power peak regulation demand, operate as follows:
Only open 66, ten No. three valves 73 of the valve 64, six of No.1 valve 61, four valve, hydraulic pressure butterfly valve 74,14
The valve 77 of valve 76,16 of valve 75,15 and three ride on Bus No. 11 valves 92, combined cycle unit do not carry out heat supply externally,
And the deoxygenation steam of oxygen-eliminating device 14 is from the low pressure filling of low-pressure superheater 503 or the steam discharge of Steam Turbine Through IP Admission 7；
When unit is in pure condensate operating condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, then the steaming of steam turbine acting is lowered by steam extraction accumulation of heat
Steam flow amount carries out accumulation of heat by hot water heat accumulator 24 at this time, operates as follows:
Open ten No. three valve 73 and ten No. seven valves 78, using from low-pressure superheater 503 low pressure filling or vapour
The steam discharge of turbine intermediate pressure cylinder 7 is as heating steam required for heat exchangers for district heating 20；Open simultaneously 20 No. two valves 83,20
No. three valve 95 and 30 No. five valves 96 of valve 87,34 of valve 84,26, in the future by first circulation pump 23
It is successively delivered in hydrophobic heat exchanger 21 and heat exchangers for district heating 20 and is heated from the water at low temperature of hot water heat accumulator 24, form high-temperature water
After enter back into hot water heat accumulator 24 and stored；
Or 69, No. ten valve 70 and ten No. seven valves 78 of No. nine valves are opened, middle pressure steam enters third pressure and temperature reducing
Device 17 forms low-pressure steam after pressure and temperature reducing, is then delivered to heat exchangers for district heating 20 by heating extraction steam pipe 45；It beats simultaneously
Open 20 No. two valves 83,23,87,30 No. four valve 95 and 30 No. five valves of valve of valve 84,26
96, hydrophobic heat exchanger 21 is sequentially entered from the water at low temperature using hot water heat accumulator 24 and heat exchangers for district heating 20 is heated, and is formed
Hot water heat accumulator 24 is entered back into after high-temperature water to be stored；
Or 71, ten No. two valve 72 and ten No. seven valves 78 of ride on Bus No. 11 valve are opened, middle pressure steam enters work device
18 driving power-equipments 19 form low-pressure steam after doing work, then are delivered to heat exchangers for district heating 20 by heating extraction steam pipe 45；It beats simultaneously
Open 20 No. two valves 83,23,87,30 No. four valve 95 and 30 No. five valves of valve of valve 84,26
96, hydrophobic heat exchanger 21 is sequentially entered from the water at low temperature using hot water heat accumulator 24 and heat exchangers for district heating 20 is heated, and is formed
Hot water heat accumulator 24 is entered back into after high-temperature water to be stored；
B, when unit needs to increase externally output electric load, steam extraction accumulation of heat is no longer carried out at this time, to increase into steamer
The steam flow of machine acting, carries out heat release to hot water heat accumulator 24 at this time, operates as follows:
20 No. four valves, 85,20 No. seven valve 88 and 20 No. eight valves 89 are opened, it will by second circulation pump 25
High-temperature water from hot water heat accumulator 24 is delivered to hot water heat exchanger 12 and carries out heat release, opens simultaneously 20 No. nine valves 90 and three
No. ten valves 91, close three ride on Bus No. 11 valves 92, and boiler feedwater is introduced into hot water heat exchanger 12 by from hot water heat accumulator 24
High-temperature water heating；
Or 20 No. four valves, 85,30 No. two valve 93 and 30 No. three valves 94 are opened, it is pumped by second circulation
High-temperature water from hot water heat accumulator 24 is delivered to radiator 26 by 25 carries out heat release；
When unit is in supplying thermal condition, when unregulated power peak regulation demand, operate as follows:
Only open 66, ten No. three valves 73 of the valve 64, six of No.1 valve 61, four valve, hydraulic pressure butterfly valve 74,14
80, two No. ten valves 81,30 of valve of valve 78,19 of valve 77,17 of valve 76,16 of valve 75,15
92,30 No. four valve 95 and 30 No. five valves 96 of No.1 valve, combined cycle unit is low merely with low-pressure superheater 503
Filling or the external heat supply of steam discharge of Steam Turbine Through IP Admission 7 are pressed, and the deoxygenation steam of oxygen-eliminating device 14 is from low-pressure superheater 503
The steam discharge of low pressure filling or Steam Turbine Through IP Admission 7；
When unit is in supplying thermal condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, then the steaming of steam turbine acting is lowered by steam extraction accumulation of heat
Steam flow amount carries out accumulation of heat by hot water heat accumulator 24 at this time, operates as follows:
Open ten No. three valve 73 and ten No. seven valves 78, using from low-pressure superheater 503 low pressure filling or vapour
The steam discharge of turbine intermediate pressure cylinder 7 is as heating steam required for heat exchangers for district heating 20；Open ten No. nine valves, 80, two No. ten valves
81,30 No. four valve 95 and 30 No. five valves 96, the hot net water from heat supply network return pipe 47 sequentially enters hydrophobic heat exchanger
21 and heat exchangers for district heating 20 be heated, formed after high temperature hot net water and externally confessed by heat supply network water supplying pipe 48；Open simultaneously 20
83,20 No. three valve 84 and 20 No. six valves 87 of No. two valves will come from hot water heat accumulator 24 by first circulation pump 23
Water at low temperature be successively delivered in hydrophobic heat exchanger 21 and heat exchangers for district heating 20 and be heated, enter back into hot water storage after forming high-temperature water
Hot device 24 is stored；
Or 69, No. ten valve 70 and ten No. seven valves 78 of No. nine valves are opened, middle pressure steam enters third pressure and temperature reducing
Device 17 forms low-pressure steam after pressure and temperature reducing, is then delivered to heat exchangers for district heating 20 by heating extraction steam pipe 45；Open ten
No. nine valve 95 and 30 No. five valves 96 of valve 81,34 of valve 80,20, the heat supply network from heat supply network return pipe 47
Water sequentially enters hydrophobic heat exchanger 21 and heat exchangers for district heating 20 is heated, right by heat supply network water supplying pipe 48 after formation high temperature hot net water
It confesses outside；20 No. two valves, 83,20 No. three valve 84 and 20 No. six valves 87 are opened simultaneously, comes from and utilizes hot water accumulation of heat
The water at low temperature of device 24 sequentially enters hydrophobic heat exchanger 21 and heat exchangers for district heating 20 is heated, and enters back into hot water storage after forming high-temperature water
Hot device 24 is stored；
Or 71, ten No. two valve 72 and ten No. seven valves 78 of ride on Bus No. 11 valve are opened, middle pressure steam enters work device
18 driving power-equipments 19 form low-pressure steam after doing work, then are delivered to heat exchangers for district heating 20 by heating extraction steam pipe 45；Open ten
No. nine valve 95 and 30 No. five valves 96 of valve 81,34 of valve 80,20, the heat supply network from heat supply network return pipe 47
Water sequentially enters hydrophobic heat exchanger 21 and heat exchangers for district heating 20 is heated, right by heat supply network water supplying pipe 48 after formation high temperature hot net water
It confesses outside；20 No. two valves, 83,20 No. three valve 84 and 20 No. six valves 87 are opened simultaneously, comes from and utilizes hot water accumulation of heat
The water at low temperature of device 24 sequentially enters hydrophobic heat exchanger 21 and heat exchangers for district heating 20 is heated, and enters back into hot water storage after forming high-temperature water
Hot device 24 is stored；
B, when unit needs to increase externally output electric load, steam extraction accumulation of heat is no longer carried out at this time, while utilizing hot water accumulation of heat
24 heat release of device carrys out external heat supply, to increase the steam flow to do work into steam turbine, operates as follows:
Ten No. seven valves 78 are turned down or closed, reduce or stop opening ten at this time using the steam extraction of unit come external heat supply
80, two No. ten valves 81 of No. nine valves, two ride on Bus No. 11 valves, 82,20 No. four valve 85 and 20 No. five valves 86 pass through
High-temperature water from hot water heat accumulator 24 is delivered to the external heat supply of heat supply network water supplying pipe 48 by two circulating pumps 25；
Or 20 No. four valves, 85,20 No. seven valve 88 and 20 No. eight valves 89 are opened, it is pumped by second circulation
High-temperature water from hot water heat accumulator 24 is delivered to hot water heat exchanger 12 by 25 carries out heat release, opens simultaneously 20 No. nine valves 90
With three No. ten valves 91, three ride on Bus No. 11 valves 92 are closed, boiler feedwater is introduced into hot water heat exchanger 12 by from hot water heat accumulator
24 high-temperature water heating；
Or 20 No. four valves, 85,30 No. two valve 93 and 30 No. three valves 94 are opened, it is pumped by second circulation
High-temperature water from hot water heat accumulator 24 is delivered to radiator 26 by 25 carries out heat release.
In above-mentioned operation method:
When unit has power peak regulation demand, middle pressure steam is provided for third reducing-and-cooling plant 17 and work device 18
Operating procedure is as follows:
No. five valves 65 are opened, using the steam discharge from steam turbine high-pressure cylinder 6 directly as third reducing-and-cooling plant
17 and work device 18 middle pressure steam source；
Alternatively, opening No. seven valves 67 and No. eight valves 68, steam is subtracted the heat from reheater 505 by the second desuperheat again
The lower steam of pressure and temperature, the middle pressure as third reducing-and-cooling plant 17 and work device 18 are formed after pressure device 16
Steam source；
Alternatively, opening No. two valves 62 and No. three valves 63, the main steam from high-pressure superheater 506 passes through the first desuperheat
The lower steam of pressure and temperature is formed after decompressor 15, as in third reducing-and-cooling plant 17 and work device 18
Press steam source；
When unit unregulated power peak regulation demand, the exothermic selection method of hot water heat accumulator 24 is as follows:
In pure condensate operating condition, simultaneous selection opens radiator 26 and opens hot water heat exchanger 12, or heat dissipation is opened in selection
Device 26 and the one of which for opening hot water heat exchanger 12 are used for the external heat release of hot water heat accumulator 24；
In supplying thermal condition, simultaneous selection is by the external heat supply of heat supply network water supplying pipe 48, unlatching radiator 26 and opens hot water
Heat exchanger 12, or the selection external heat supply of heat supply network water supplying pipe 48, open radiator 26 and open wherein the one of hot water heat exchanger 12
Kind, it is used for the external heat release of hot water heat accumulator 24.
When unit is that heat exchangers for district heating 20 provides heating steam, the low pressure of preferential Selection utilization low-pressure superheater 503 is mended
The steam discharge of vapour or Steam Turbine Through IP Admission 7, the steam discharge of next Selection utilization work device 18, last Selection utilization third pressure and temperature reducing
The pressure and temperature reducing steam of device 17；
When unit is third reducing-and-cooling plant 17 and work device 18 provides middle pressure steam, preferential Selection utilization steamer
The high pressure steam discharge of machine high pressure cylinder 6, the hot steam again of next Selection utilization reheater 505, last Selection utilization high-pressure superheater 506
Main steam；
In pure condensate operating condition, to be used for the external heat release of hot water heat accumulator 24, secondly preferential selection opens hot water heat exchanger 12
Selection opens radiator 26 to be used for the external heat release of hot water heat accumulator 24；
In supplying thermal condition, preferential selection is externally put by the external heat supply of heat supply network water supplying pipe 48 to be used for hot water heat accumulator 24
Heat, secondly selection opens hot water heat exchanger 12 to be used for the external heat release of hot water heat accumulator 24, and finally radiator 26 is opened in selection
For the external heat release of hot water heat accumulator 24.
Radiator 26 in the present embodiment can use water-cooling pattern, can also use air-cooled mode.
In the carrying out practically method of the present embodiment, all valves all have the function of adjusting pipeline fluid flow；Except liquid
It presses except butterfly valve 74, other valves all have the function of truncation.
In the carrying out practically method of the present embodiment, in the operation of different operating conditions, the valvular aperture regulation of institute passes through connection
The DCS control system for closing Cycle Unit, which remotely operates, to be completed；The storage emission capacity and storage Exotherm Time of hot water heat accumulator 24 need same
When consider power peak regulation depth requirements, the external heat capacity of unit and unit steam extraction integrated system regulating power etc. it is comprehensive because
Usually determine.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (7)
1. a kind of extraction for heat supply integrated system for combined cycle unit power peak regulation characterized by comprising gas turbine
Group and vapor wheel unit；
The gas turbine group includes gas turbine blower (1), gas-turbine combustion chamber (2), gas turbine turbine (3) and
The exhaust outlet of one generator (4), the gas turbine blower (1) is connect with the air inlet of gas-turbine combustion chamber (2), described
The exhaust outlet of gas-turbine combustion chamber (2) is connect with the air inlet of gas turbine turbine (3), the gas turbine turbine (3)
Exhaust outlet is connect by smoke discharge pipe (31) with the gas inlet of waste heat boiler (5), and gas turbine turbine (3) and combustion gas wheel
Machine compressor (1) is coaxially connected；
The vapor wheel unit includes waste heat boiler (5), steam turbine high-pressure cylinder (6), Steam Turbine Through IP Admission (7), steam turbine low-pressure
Cylinder (8), condenser (10), condensate pump (11), hot water heat exchanger (12), gland heater (13), removes the second generator (9)
Oxygen device (14), the first reducing-and-cooling plant (15), the second reducing-and-cooling plant (16), third reducing-and-cooling plant (17), acting
Equipment (18), power-equipment (19), heat exchangers for district heating (20), hydrophobic heat exchanger (21), pumps for hot water supply net (22), first circulation pump
(23), hot water heat accumulator (24), second circulation pump (25) and radiator (26), press in the steam turbine high-pressure cylinder (6), steam turbine
Cylinder (7) and turbine low pressure cylinder (8) are coaxially connected, and the waste heat boiler (5) includes smoke-gas preheater (501), low-pressure drum
(502), low-pressure superheater (503), HP steam drum (504), reheater (505) and high-pressure superheater (506), the smoke pre-heating
The water outlet of device (501) is connect with the water inlet of the water inlet of low-pressure drum (502) and HP steam drum (504) simultaneously, described low
Pressure drum (502) venthole connect with the air intake of low-pressure superheater (503), the venthole of the HP steam drum (504) and
The air intake of high-pressure superheater (506) connects, and the air intake of the steam turbine high-pressure cylinder (6) passes through high-pressure steam pipe (33) and high
The venthole connection of superheater (506) is pressed, and is equipped with No.1 valve (61) in the air intake of steam turbine high-pressure cylinder (6), it is described
The steam drain of steam turbine high-pressure cylinder (6) is connect by cold steam pipe again (34) with the air intake of reheater (505), and in reheater
(505) air intake is equipped with No. four valves (64), and the venthole of the reheater (505) passes through hot steam pipe (35) and vapour again
The air intake of turbine intermediate pressure cylinder (7) connects, and is equipped with No. six valves (66) in the air intake of Steam Turbine Through IP Admission (7), described
The steam drain of Steam Turbine Through IP Admission (7) is connect by communicating pipe (36) with the air intake of turbine low pressure cylinder (8), and in steam turbine
The air intake of low pressure (LP) cylinder (8) is equipped with hydraulic pressure butterfly valve (74), and the communicating pipe (36) connect with one end of low pressure steam pipe (37),
And ten No. four valves (75) are installed in one end of low pressure steam pipe (37), the venthole of the low-pressure superheater (503) with it is low
The other end connection of steam pipe (37) is pressed, and ten No. five valves (76) are installed in the other end of low pressure steam pipe (37), it is described
The steam drain of turbine low pressure cylinder (8) is connect with condenser (10), and the water inlet end of boiler feed pipe (32) and condenser (10) are even
It connects, the water outlet of the boiler feed pipe (32) is connect with the water inlet of smoke-gas preheater (501), and in boiler feed pipe (32)
On along water flowing direction be sequentially installed with condensate pump (11), hot water heat exchanger (12), gland heater (13) and oxygen-eliminating device
(14), the admission end of high steam bypass (38) is connect with high-pressure steam pipe (33), and the high steam bypass (38) goes out vapour
End connect with the admission end of the first middle pressure steam branch pipe (42), and high steam bypass (38) on along steam flow direction according to
It is secondary that No. two valves (62), the first reducing-and-cooling plant (15) and No. three valves (63), the first middle pressure steam branch pipe are installed
(42) steam output end is connect with the air intake of third reducing-and-cooling plant (17), and is installed on the first middle pressure steam branch pipe (42)
There are No. nine valves (69), the admission end of cold steam by-pass again (39) is connect with cold steam pipe again (34), the cold steam by-pass again
(39) steam output end is connect with the admission end of the first middle pressure steam branch pipe (42), and is equipped with five on cold steam by-pass again (39)
Number valve (65), steam pipe (35) is connect the admission end of steam by-pass (40) heat again with heat again, hot steam by-pass (40) again
Steam output end connect with the admission end of the first middle pressure steam branch pipe (42), and flowed again along steam in steam by-pass (40) in heat
Direction is sequentially installed with No. seven valves (67), the second reducing-and-cooling plant (16) and No. eight valves (68), low-pressure steam bypass
(41) admission end is connect with low pressure steam pipe (37), the steam output end of the low-pressure steam bypass (41) and heating extraction steam pipe (45)
Admission end connection, and low-pressure steam bypass (41) on ten No. three valves (73) are installed, the heating extraction steam pipe (45)
Steam output end is connect with the air intake of heat exchangers for district heating (20), and ten No. seven valves (78) are equipped on heating extraction steam pipe (45),
The venthole of the third reducing-and-cooling plant (17) is connect with the admission end of heating extraction steam pipe (45), and in third pressure and temperature reducing
The venthole of device (17) is equipped with No. ten valves (70), the admission end and the first middle pressure steam of the second middle pressure steam branch pipe (43)
The admission end of branch pipe (42) connects, and is equipped with ride on Bus No. 11 valve (71) on the second middle pressure steam branch pipe (43), described second
The steam output end of middle pressure steam branch pipe (43) is connect with the air intake of work device (18), the venthole of work device (18) and heating
The admission end of extraction steam pipe (45) connects, and is equipped with ten No. two valves (72), the heat supply network in the venthole of work device (18)
The hydrophobic outlet of heater (20) is connect with the hydrophobic import of high temperature of hydrophobic heat exchanger (21), and the low temperature of hydrophobic heat exchanger (21) is dredged
Water out is connect by drain pipe (46) with the water inlet of condensate pump (11), and ten No. eight valves are equipped on drain pipe (46)
Door (79), heat supply network return pipe (47) are connect with the water at low temperature side-entrance of hydrophobic heat exchanger (21), and in hydrophobic heat exchanger (21)
Water at low temperature side-entrance is equipped with 30 No. four valves (95), and ten No. nine valves (80) and heat are equipped on heat supply network return pipe (47)
The water at low temperature side outlet of net circulating pump (22), the hydrophobic heat exchanger (21) is connect with the water side-entrance of heat exchangers for district heating (20),
The water side outlet of heat exchangers for district heating (20) is connect with heat supply network water supplying pipe (48), and in the water side outlet and heat of heat exchangers for district heating (20)
30 No. five valves (96) and two No. ten valves (81) are separately installed on net water supplying pipe (48), the hot water heat accumulator (24)
Single port is connect with one end of one end of accumulation of heat low temperature water pipe (49) and the first accumulation of heat low temperature branch pipe (53) simultaneously, hot water heat accumulator
(24) another port is connect with the one end of accumulation of heat high-temperature conduit (51), the other end of the accumulation of heat low temperature water pipe (49) with it is hydrophobic
The water at low temperature side-entrance of heat exchanger (21) connects, and first circulation pump (23) is equipped on accumulation of heat low temperature water pipe (49), described
First circulation pump (23) is provided with accumulation of heat low temperature bypass (50), and in import, outlet and the accumulation of heat low temperature of first circulation pump (23)
20 No. three valves (84), 20 No. two valves (83) and two ride on Bus No. 11 valves (82) are separately installed in bypass (50), it is described
The other end of first accumulation of heat low temperature branch pipe (53) is connect with the high-temperature water side outlet of hot water heat exchanger (12), and low in the first accumulation of heat
20 No. seven valves (88), the other end and heat supply network water supplying pipe of the accumulation of heat high-temperature conduit (51) are installed on warm branch pipe (53)
(48) it connects, and second circulation pump (25) is installed on accumulation of heat high-temperature conduit (51), the second circulation pump (25) is provided with
Accumulation of heat high temperature bypasses (52), and is separately installed in import, outlet and accumulation of heat the high temperature bypass (52) of second circulation pump (25)
No. six 20 No. four valves (85), 20 No. five valve (86) He Ershi valves (87), the outlet of the second circulation pump (25)
It is also connect with one end of the first accumulation of heat high temperature branch pipe (54), the other end and hot water heat exchanger of the first accumulation of heat high temperature branch pipe (54)
(12) high-temperature water side-entrance connection, and 20 No. eight valves (89) are installed on the first accumulation of heat high temperature branch pipe (54).
2. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In steam output end, third desuperheat of the oxygen-eliminating device (14) by deoxygenation extraction steam pipe (44) simultaneously with low-pressure steam bypass (41) subtract
The venthole of pressure device (17), the venthole of work device (18) and heating extraction steam pipe (45) connection, and in deoxygenation extraction steam pipe
(44) ten No. six valves (77) are installed on.
3. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In the work device (18) is back pressure machine or screw expander, and power-equipment (19) is generator, condensate pump (11), heat
Net circulating pump (22), first circulation pump (23) or second circulation pump (25).
4. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In the third reducing-and-cooling plant (17) is to be connected in parallel with work device (18), for adding for oxygen-eliminating device (14) and heat supply network
Steam required for hot device (20) provides.
5. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In the admission end of the second middle pressure steam branch pipe (43) also bypasses steam output end, the cold steam again of (38) with high steam simultaneously
The steam output end for bypassing (39) is connected with the steam output end of hot steam by-pass (40) again.
6. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In the water at low temperature side of the hot water heat exchanger (12) is provided with feed pipe bypass (55), and the low temperature in hot water heat exchanger (12)
20 No. nine valves (90), three No. ten valves are separately installed in water side-entrance, water at low temperature side outlet and feed pipe bypass (55)
(91) and three ride on Bus No. 11 valves (92).
7. the extraction for heat supply integrated system according to claim 1 for combined cycle unit power peak regulation, feature exist
In one end of the hot water heat accumulator (24) is also connect with one end of the second accumulation of heat low temperature branch pipe (57), the second accumulation of heat low temperature branch
The other end of pipe (57) is connect with the water outlet of radiator (26), and is equipped with 33 on the second accumulation of heat low temperature branch pipe (57)
Number valve (94)；The outlet of the second circulation pump (25) is also connect with one end of the second accumulation of heat high temperature branch pipe (56), and second stores
The other end of hot high temperature branch pipe (56) is connect with the water inlet of radiator (26), and is installed on the second accumulation of heat high temperature branch pipe (56)
There are 30 No. two valves (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920186740.7U CN209726304U (en) | 2019-02-02 | 2019-02-02 | A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920186740.7U CN209726304U (en) | 2019-02-02 | 2019-02-02 | A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209726304U true CN209726304U (en) | 2019-12-03 |
Family
ID=68682703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920186740.7U Active CN209726304U (en) | 2019-02-02 | 2019-02-02 | A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209726304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869786A (en) * | 2019-02-02 | 2019-06-11 | 华电电力科学研究院有限公司 | A kind of extraction for heat supply integrated system and its operation method for combined cycle unit power peak regulation |
| CN114810249A (en) * | 2022-04-07 | 2022-07-29 | 西安热工研究院有限公司 | Thermoelectric decoupling system and method for heat supply unit |
-
2019
- 2019-02-02 CN CN201920186740.7U patent/CN209726304U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869786A (en) * | 2019-02-02 | 2019-06-11 | 华电电力科学研究院有限公司 | A kind of extraction for heat supply integrated system and its operation method for combined cycle unit power peak regulation |
| CN109869786B (en) * | 2019-02-02 | 2023-07-18 | 华电电力科学研究院有限公司 | Steam extraction and heat supply integrated system for power peak regulation of combined cycle unit and operation method of steam extraction and heat supply integrated system |
| CN114810249A (en) * | 2022-04-07 | 2022-07-29 | 西安热工研究院有限公司 | Thermoelectric decoupling system and method for heat supply unit |
| CN114810249B (en) * | 2022-04-07 | 2024-02-20 | 西安热工研究院有限公司 | Thermoelectric decoupling system and method for heat supply unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103452611B (en) | Combined-cycle combined heat and power system | |
| CN109855147A (en) | A kind of combined cycle power plant and its operation method coupled based on heat supply with power peak regulation | |
| CN103644004B (en) | The cogeneration system of a kind of pair of turbine, combined cycle | |
| CN109869786A (en) | A kind of extraction for heat supply integrated system and its operation method for combined cycle unit power peak regulation | |
| CN109869204A (en) | A kind of heat supply for Combined cycle gas-steam turbine unit and power peak regulation coupled system and its operation method | |
| CN109826681A (en) | A kind of the industrial heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction | |
| CN206267896U (en) | Combined cycle two-shipper condensing-back pressure formula is drawn gas cogeneration system | |
| CN109854316A (en) | A kind of combined cycle heat supply based on energy cascade utilization and power peak regulation coupled system and its operation method | |
| CN109854315A (en) | A kind of heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction | |
| CN109798157A (en) | A kind of solidifying pumping back coupling steam extraction integrated system and its operation method for thermoelectricity unit power peak regulation | |
| CN203685319U (en) | Double-turbine combined-cycle combined heat and power supplying system | |
| CN109869784A (en) | It is a kind of to integrate the combined cycle power plant and its operation method that couple with accumulation of heat peak regulation for steam extraction | |
| CN109854319A (en) | A kind of matched combined cycle extraction for heat supply integrated system of coupling pressure and its operation method | |
| CN106499455A (en) | Combined-cycle power plant's soda pop backheat and fuel heating integrated put forward effect system | |
| CN210179723U (en) | Combined cycle device based on heat supply and electric power peak regulation coupling | |
| CN209726304U (en) | A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation | |
| CN203499735U (en) | Combined cycle co-generation system | |
| CN209621420U (en) | A kind of heat supply for Combined cycle gas-steam turbine unit and power peak regulation coupled system | |
| CN112833378B (en) | Reheating system capable of improving heat supply capacity | |
| CN210178429U (en) | Heating system for steam extraction integration of gas-steam combined cycle unit | |
| CN210088955U (en) | Combined cycle device for steam extraction integration and heat storage peak regulation coupling | |
| CN109763869A (en) | A kind of accumulation of heat coupling steam extraction integrated system and its operation method for combined cycle energy cascade utilization | |
| CN206190339U (en) | Two branch road heating system of cogeneration steam turbine | |
| CN209724435U (en) | A kind of solidifying pumping back coupling steam extraction integrated system for thermoelectricity unit power peak regulation | |
| CN113175360A (en) | Bus pipe connection system for improving deep peak shaving low-pressure cylinder efficiency and operation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |