CN109855147A - A kind of combined cycle power plant and its operation method coupled based on heat supply with power peak regulation - Google Patents
A kind of combined cycle power plant and its operation method coupled based on heat supply with power peak regulation Download PDFInfo
- Publication number
- CN109855147A CN109855147A CN201910108096.6A CN201910108096A CN109855147A CN 109855147 A CN109855147 A CN 109855147A CN 201910108096 A CN201910108096 A CN 201910108096A CN 109855147 A CN109855147 A CN 109855147A
- Authority
- CN
- China
- Prior art keywords
- steam
- valves
- pressure
- turbine
- heat
- 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.)
- Granted
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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 present invention relates to a kind of combined cycle power plants and its operation method coupled based on heat supply with power peak regulation, belong to cogeneration of heat and power technical field.The present invention includes gas turbine group and vapor wheel unit；Based on cascaded utilization of energy principle, the Integrated design of different steam extraction modes is carried out, combined cycle unit thermoelectricity decoupling service ability is effectively increased, has ensured resident's heating demand；Steam hold over system has also been coupled simultaneously, has not only realized cooperate with matching of the combined cycle unit power peak regulation with heat supply, but also has increased power peak regulation ability of the combined cycle unit when pure condensate operating condition is run；After having used the present invention, while depth excavation combined cycle unit external heat capacity, effectively reduce the acting capacity loss in heat supplying process, in addition, meet the power peak regulation Policy Demand of current rigorous again, the depth peak modulation capacity for realizing fired power generating unit, meets demand of the power grid to peak load regulation conscientiously, is worth with practice higher.
Description
Technical field
The invention belongs to cogeneration of heat and power technical fields, and in particular to a kind of to be followed based on combining of coupling of heat supply and power peak regulation
Loop device and its operation method.
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.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally, performance
The combined cycle power plant and its operation method reliably coupled based on heat supply with power peak regulation.
Technical solution used by the present invention solves the above problems is: a kind of to be combined based on heat supply with what power peak regulation coupled
Circulator 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 generator,
The exhaust outlet of the gas turbine blower and the air inlet of gas-turbine combustion chamber connect, the row of the gas-turbine combustion chamber
Port is connect with the air inlet of gas turbine turbine, and the exhaust outlet of the gas turbine turbine passes through smoke discharge pipe and waste heat pot
The gas inlet of furnace connects, and the gas turbine turbine drives the first electrical power generators, and gas turbine turbine and 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, the second hair
Motor, condenser, condensate pump, gland heater, oxygen-eliminating device, the first reducing-and-cooling plant, the second reducing-and-cooling plant, third
Reducing-and-cooling plant, steam accumulator, work device, power-equipment, heat exchangers for district heating, hydrophobic changes the 4th reducing-and-cooling plant
Hot device and pumps for hot water supply net, the steam turbine high-pressure cylinder, Steam Turbine Through IP Admission and turbine low pressure cylinder are coaxially connected, and drive the
Two 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 connect with the water inlet of the water inlet of low-pressure drum and HP steam drum simultaneously
It connects, the venthole of the low-pressure drum and the air intake of low-pressure superheater connect, and venthole and the height of the HP steam drum press through
The air intake of hot device connects, and the air intake of the steam turbine high-pressure cylinder is connected by the venthole of high-pressure steam pipe and high-pressure superheater
It connects, and No.1 valve is installed in the air intake of steam turbine high-pressure cylinder, the steam drain of the steam turbine high-pressure cylinder is steamed again by cold
The connection of the air intake of steam pipe and reheater, and No. four valves, the venthole of the reheater are installed in the air intake of reheater
By heat, steam pipe and the air intake of Steam Turbine Through IP Admission are connected again, and are equipped with No. six valves in the air intake of Steam Turbine Through IP Admission
The steam drain of door, the Steam Turbine Through IP Admission is connected by the air intake of communicating pipe and turbine low pressure cylinder, and low in steam turbine
The air intake of cylinder pressure is equipped with hydraulic pressure butterfly valve, and one end of the communicating pipe and low pressure steam pipe connects, and in low pressure steam pipe
One end is equipped with No. nine valves, and the venthole of the low-pressure superheater and the other end of low pressure steam pipe connect, and steam in low pressure
The other end of steam pipe is equipped with No. ten valves, and the steam drain of the turbine low pressure cylinder is connect with condenser, boiler feed pipe
Water inlet end is connect with condenser, and the water outlet of the boiler feed pipe and the water inlet of smoke-gas preheater connect, and give in boiler
Be sequentially installed with condensate pump, gland heater and oxygen-eliminating device along water flowing direction on water pipe, high steam bypass into vapour
End is connect with high-pressure steam pipe, and the steam output end of the high steam bypass is connect with the admission end of the first middle pressure steam branch pipe, and
No. two valves, the first reducing-and-cooling plant and No. three valves are sequentially installed with along steam flow direction in high steam bypass
Door, the steam output end of the first middle pressure steam branch pipe are connect with the air intake of third reducing-and-cooling plant, and are pressed and steamed in first
Ten No. two valves are installed, the admission end of cold steam by-pass again is connect with cold steam pipe again, by the cold steam again on vapour branch pipe
The steam output end on road is connect with the admission end of the first middle pressure steam branch pipe, and No. five valves are equipped in cold steam by-pass again, heat
Steam pipe is connect the admission end of steam by-pass again with heat again, the hot steam output end of steam by-pass and the first middle pressure steam branch pipe again
Admission end connection, and heat is sequentially installed with No. seven valves along steam flow direction in steam by-pass again, the second desuperheat subtracts
The admission end of pressure device and No. eight valves, low-pressure steam bypass is connect with low pressure steam pipe, and the low-pressure steam bypass goes out vapour
End is connect with the admission end of heating extraction steam pipe, and is equipped with ride on Bus No. 11 valve, the heating extraction steam pipe in low-pressure steam bypass
Steam output end and the air intake of heat exchangers for district heating connect, and two No. ten valves are installed on heating extraction steam pipe, the third subtracts
The venthole of warm decompressor is connect with the admission end of heating extraction steam pipe, and is equipped in the venthole of third reducing-and-cooling plant
Ten No. three valves, the admission end of the second middle pressure steam branch pipe are connect with the admission end of the first middle pressure steam branch pipe, and in second
Ten No. four valves and the 4th reducing-and-cooling plant are sequentially installed with along steam flow direction on pressure steam branch pipe, in described second
The air intake of the steam output end and work device of pressing steam branch pipe connects, the venthole of work device and the admission end of heating extraction steam pipe
Connection, and ten No. seven valves and ten No. eight valves are separately installed in the air intake of work device and venthole, the heat supply network adds
The hydrophobic outlet of hot device and the hydrophobic import of the high temperature of hydrophobic heat exchanger connect, and the hydrophobic outlet of the low temperature of hydrophobic heat exchanger passes through hydrophobic
Pipe is connect with the water inlet of condensate pump, and two ride on Bus No. 11 valves are equipped on drain pipe, heat supply network return pipe and hydrophobic heat exchange
The water at low temperature side-entrance of device connects, and 20 No. two valves and pumps for hot water supply net are equipped on heat supply network return pipe, described hydrophobic
The water side-entrance of the water at low temperature side outlet and heat exchangers for district heating of heat exchanger connects, and the water side outlet and heat supply network of heat exchangers for district heating supply water
Pipe connection, and 20 No. three valves are installed on heat supply network water supplying pipe.
Furthermore, the steam output end of the second middle pressure steam branch pipe is also connect with the air intake of steam accumulator, is steamed
The venthole of vapour storage heater is connect with the admission end of heating extraction steam pipe, and is pacified respectively in the air intake of steam accumulator and venthole
Equipped with ten No. five valves and ten No. six valves.
Furthermore, the oxygen-eliminating device is subtracted with the steam output end of low-pressure steam bypass, third simultaneously by deoxygenation extraction steam pipe
Venthole, the venthole of steam accumulator of warm decompressor are connected with the venthole of work device, and on deoxygenation extraction steam pipe
Ten No. nine valves are installed.
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, pumps for hot water supply net or condensate pump.
Furthermore, the third reducing-and-cooling plant, steam accumulator and work device are to be connected in parallel, simultaneously
Required steam is provided for oxygen-eliminating device and heat exchangers for district heating.
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.
The operation method of the combined cycle power plant coupled based on heat supply with power peak regulation is as follows:
When unit is in pure condensate operating condition, when unregulated power peak regulation demand:
Only open No.1 valve, No. four valves, No. six valves, hydraulic pressure butterfly valve, No. nine valves, No. ten valves, ride on Bus No. 11 valve and
Ten No. nine valves, combined cycle unit does not carry out heat supply externally, and the deoxygenation steam of oxygen-eliminating device is from the low of low-pressure superheater
Press filling；
When unit is in pure condensate operating condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, steam accumulation of heat is mainly carried out by steam accumulator, is lowered into
The steam flow of steam turbine acting, at this time:
No. five valves and ten No. four valves are opened, are directly entered the 4th pressure and temperature reducing dress from the steam discharge of steam turbine high-pressure cylinder
It sets, is delivered to steam accumulator progress accumulation of heat by opening ten No. five valves after pressure and temperature reducing；
Alternatively, opening ten No. four valves, No. seven valves and No. eight valves, second is first passed through from the hot steam again of reheater and is subtracted
Warm decompressor carries out primary pressure and temperature reducing, then carries out secondary pressure and temperature reducing by the 4th reducing-and-cooling plant, finally by
It opens ten No. five valves and is delivered to steam accumulator progress accumulation of heat；
Alternatively, opening ten No. four valves, No. two valves and No. three valves, the main steam from high-pressure superheater first passes through first
Reducing-and-cooling plant carries out primary pressure and temperature reducing, then carries out pressure and temperature reducing by the 4th reducing-and-cooling plant, finally by beating
It opens ten No. five valves and is delivered to steam accumulator progress accumulation of heat；
B, when unit needs to increase externally output electric load, steam heat release is mainly carried out by steam accumulator, increases and enters
The steam flow of steam turbine acting, at this time:
Ten No. five valves are closed, ten No. six valves are opened, steam accumulator externally carries out steam heat release；At this point, closing ride on Bus No. 11
Valve, opens ten No. nine valves, and steam accumulator provides deoxygenation steam for oxygen-eliminating device；
Alternatively, opening simultaneously ride on Bus No. 11 valve and ten No. nine valves, steam accumulator not only provided deoxygenation steam for oxygen-eliminating device, but also was
Turbine low pressure cylinder provides low pressure filling, to increase the steam flow to do work into turbine low pressure cylinder；
When unit is in supplying thermal condition, when unregulated power peak regulation demand:
Two No. ten valves, two ride on Bus No. 11 valves, 20 No. two valves and 20 No. three valves are opened, hydrophobic heat exchanger benefit is first passed through
Primary heating is carried out to the heat supply network return water from heat supply network return pipe with heating steam drainage, then heating is utilized by heat exchangers for district heating
Steam carries out reheating to the heat supply network return water from hydrophobic heat exchanger, then exports external heat supply by heat supply network water supplying pipe；
At this point, providing heating steam for heat exchangers for district heating, the specific operation method is as follows:
Open ride on Bus No. 11 valve, using from the low pressure filling of low-pressure superheater or the steam discharge of Steam Turbine Through IP Admission as heat supply network
Heating steam required for heater；
Alternatively, opening ten No. two valves and ten No. four valves (64), middle pressure steam enters third reducing-and-cooling plant by desuperheat
Low-pressure steam is formed after decompression, and heat exchangers for district heating is then delivered to by heating extraction steam pipe；
Alternatively, opening ten No. four valves, ten No. seven valves and ten No. eight valves, middle pressure steam is introduced into the 4th reducing-and-cooling plant
Primary pressure and temperature reducing is carried out, forms low-pressure steam after being done work subsequently into work device driving power-equipment, then by heating
Extraction steam pipe is delivered to heat exchangers for district heating；
When unit is in supplying thermal condition, when having power peak regulation demand:
A, when unit needs to reduce externally output electric load, steam accumulation of heat is mainly carried out by steam accumulator, is lowered into
The steam flow of steam turbine acting, concrete operations are as follows:
Ten No. five valves are opened, close ten No. six valves, steam is also delivered to after the 4th reducing-and-cooling plant pressure and temperature reducing
Steam accumulator carries out accumulation of heat, to increase the steam flow into the 4th reducing-and-cooling plant, is lowered into steam turbine acting
Steam flow；
B, when unit needs to increase externally output electric load, steam heat release is mainly carried out by steam accumulator, increases and enters
The steam flow of steam turbine acting, concrete operations are as follows:
Ten No. five valves are closed, ten No. six valves are opened, steam accumulator externally carries out steam heat release；At this point, being also turn off 11
Number valve, ten No. two valves, ten No. three valves, ten No. four valves, ten No. seven valves and ten No. eight valves, needed for heat exchangers for district heating
The heating steam source wanted is only steam accumulator.
In the operation method of the above-mentioned combined cycle power plant coupled based on heat supply with power peak regulation:
There is provided middle pressure steam for third reducing-and-cooling plant and the 4th reducing-and-cooling plant, the specific operation method is as follows:
No. five valves are opened, are subtracted using the steam discharge from steam turbine high-pressure cylinder directly as third reducing-and-cooling plant and the 4th
The middle pressure steam source of warm decompressor；
Alternatively, opening No. seven valves and No. eight valves, steam passes through shape after the second reducing-and-cooling plant to the heat from reheater again
At the lower steam of pressure and temperature, come as the middle pressure steam of third reducing-and-cooling plant and the 4th reducing-and-cooling plant
Source；
Alternatively, No. two valves and No. three valves are opened, after the main steam from high-pressure superheater passes through the first reducing-and-cooling plant
The lower steam of pressure and temperature is formed, is come as the middle pressure steam of third reducing-and-cooling plant and the 4th reducing-and-cooling plant
Source.
In the operation method of the above-mentioned combined cycle power plant coupled based on heat supply with 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 steam turbine
The steam discharge of intermediate pressure cylinder, secondly the steam discharge of Selection utilization work device, the desuperheat of last Selection utilization third reducing-and-cooling plant subtract
Press steam；
When unit provides middle pressure steam for third reducing-and-cooling plant and the 4th reducing-and-cooling plant, preferential Selection utilization steamer
The high pressure steam discharge of machine high pressure cylinder, the hot steam again of next Selection utilization reheater, the main steaming of last Selection utilization high-pressure superheater
Vapour.
Compared with prior art, the present invention having the following advantages that and effect: structure is simple, design rationally, reliable performance, base
In cascaded utilization of energy principle, the Integrated design of different steam extraction modes is carried out, effectively increases the decoupling of combined cycle unit thermoelectricity
Service ability has ensured resident's heating demand；Steam hold over system has also been coupled simultaneously, has both realized combined cycle unit electric power tune
The matching that cooperates at peak and heat supply, and increase power peak regulation ability of the combined cycle unit when pure condensate operating condition is run；This is used
After invention, while depth excavation combined cycle unit external heat capacity, the acting in heat supplying process is effectively reduced
Capacity loss is realized the depth peak modulation capacity of fired power generating unit, is cut in addition, meeting the power peak regulation Policy Demand of current rigorous again
Demand of the power grid to peak load regulation is met in fact, is worth with practice higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the combined cycle power plant coupled based on heat supply with power peak regulation in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
The combined cycle power plant coupled based on heat supply with power peak regulation referring to Fig. 1, in the present embodiment, comprising: combustion gas wheel
Unit and vapor wheel unit；
Gas turbine group includes gas turbine blower 1, gas-turbine combustion chamber 2, gas turbine turbine 3 and the first generator 4,
The exhaust outlet of gas turbine blower 1 is connect with the air inlet of gas-turbine combustion chamber 2, the exhaust outlet of gas-turbine combustion chamber 2
It is connect with the air inlet of gas turbine turbine 3, the exhaust outlet of gas turbine turbine 3 passes through smoke discharge pipe 31 and waste heat boiler 5
Gas inlet connection, gas turbine turbine 3 drives the power generation of the first generator 4, and gas turbine turbine 3 is calmed the anger with gas turbine
Machine 1 is coaxially connected；
Vapor wheel unit includes waste heat boiler 5, steam turbine high-pressure cylinder 6, Steam Turbine Through IP Admission 7, the hair of turbine low pressure cylinder 8, second
Motor 9, condenser 10, condensate pump 11, gland heater 12, oxygen-eliminating device 13, the first reducing-and-cooling plant 14, the second desuperheat subtract
Pressure device 15, third reducing-and-cooling plant 16, the 4th reducing-and-cooling plant 17, steam accumulator 18, work device 19, power are set
Standby 20, heat exchangers for district heating 21, hydrophobic heat exchanger 22 and pumps for hot water supply net 23, steam turbine high-pressure cylinder 6, Steam Turbine Through IP Admission 7 and vapour
Turbine low pressure (LP) cylinder 8 is coaxially connected, and drives the power generation of the second generator 9, and 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 water outlet of smoke-gas preheater 501
It is connect simultaneously with the water inlet of the water inlet of low-pressure drum 502 and HP steam drum 504, the venthole and low pressure of low-pressure drum 502
The air intake of superheater 503 connects, and the venthole of HP steam drum 504 is connect with the air intake of high-pressure superheater 506, and steam turbine is high
The air intake of cylinder pressure 6 is connect by high-pressure steam pipe 33 with the venthole of high-pressure superheater 506, and in steam turbine high-pressure cylinder 6
Air intake is equipped with No.1 valve 51, and the steam drain of steam turbine high-pressure cylinder 6 is by cold steam pipe again 34 and reheater 505 into vapour
Mouth connection, and No. four valves 54 are installed in the air intake of reheater 505, the venthole of reheater 505 passes through hot steam pipe again
35 connect with the air intake of Steam Turbine Through IP Admission 7, and are equipped with No. six valves 56, steamer in the air intake of Steam Turbine Through IP Admission 7
The steam drain of machine intermediate pressure cylinder 7 passes through to be connect communicating pipe 36 with the air intake of turbine low pressure cylinder 8, and in turbine low pressure cylinder 8
Air intake is equipped with hydraulic pressure butterfly valve 59, connect with one end of low pressure steam pipe 37 communicating pipe 36, and the one of low pressure steam pipe 37
End is equipped with No. nine valves 60, and the venthole of low-pressure superheater 503 is connect with the other end of low pressure steam pipe 37, and steams in low pressure
The other end of steam pipe 37 is equipped with No. ten valves 61, and the steam drain of turbine low pressure cylinder 8 is connect with condenser 10, boiler feed pipe
32 water inlet end is connect with condenser 10, and the water outlet of boiler feed pipe 32 is connect with the water inlet of smoke-gas preheater 501, and
Condensate pump 11, gland heater 12 and oxygen-eliminating device 13, high pressure are sequentially installed with along water flowing direction on boiler feed pipe 32
The admission end of steam by-pass 38 is connect with high-pressure steam pipe 33, the steam output end and the first middle pressure steam branch pipe of high steam bypass 38
42 admission end connection, and No. two valves 52, first are sequentially installed with along steam flow direction in high steam bypass 38
Reducing-and-cooling plant 14 and No. three valves 53, the steam output end of the first middle pressure steam branch pipe 42 and third reducing-and-cooling plant 16 into
Steam ports connection, and is equipped with ten No. two valves 63 on the first middle pressure steam branch pipe 42, the admission end of cold steam by-pass again 39 with
Cold steam pipe again 34 connects, and the steam output end of cold steam by-pass again 39 is connect with the admission end of the first middle pressure steam branch pipe 42, and
No. five valves 55 are installed, steam pipe 35 is connect the admission end of steam by-pass 40 heat again with heat again, heat in cold steam by-pass again 39
The steam output end of steam by-pass 40 is connect with the admission end of the first middle pressure steam branch pipe 42 again, and heat again in steam by-pass 40 along
Steam flow direction is sequentially installed with No. seven valves 57, the second reducing-and-cooling plant 15 and No. eight valves 58, low-pressure steam bypass
41 admission end is connect with low pressure steam pipe 37, and the steam output end of low-pressure steam bypass 41 and the admission end of heating extraction steam pipe 45 connect
It connects, and ride on Bus No. 11 valve 62 is installed in low-pressure steam bypass 41, the steam output end and heat exchangers for district heating 21 of heating extraction steam pipe 45
Air intake connection, and two No. ten valves 71, the venthole of third reducing-and-cooling plant 16 are installed on heating extraction steam pipe 45
It is connect with the admission end of heating extraction steam pipe 45, and ten No. three valves 64 is installed in the venthole of third reducing-and-cooling plant 16,
The admission end of second middle pressure steam branch pipe 43 is connect with the admission end of the first middle pressure steam branch pipe 42, and in the second middle pressure steam branch
Ten No. four valves 65 and the 4th reducing-and-cooling plant 17, the second middle pressure steam are sequentially installed with along steam flow direction on pipe 43
The steam output end of branch pipe 43 is connect with the air intake of work device 19, the venthole of work device 19 and heating extraction steam pipe 45 into vapour
End connection, and ten No. seven valve 68 and ten No. eight valves 69 are separately installed in the air intake of work device 19 and venthole, heat
The hydrophobic outlet of net heater 21 is connect with the hydrophobic import of the high temperature of hydrophobic heat exchanger 22, and the low temperature of hydrophobic heat exchanger 22 is hydrophobic out
Mouth is connect by drain pipe 46 with the water inlet of condensate pump 11, and two ride on Bus No. 11 valves 72 are equipped on drain pipe 46, heat
Net return pipe 47 is connect with the water at low temperature side-entrance of hydrophobic heat exchanger 22, and 20 No. two valves are equipped on heat supply network return pipe 47
Door 73 and pumps for hot water supply net 23, the water at low temperature side outlet of hydrophobic heat exchanger 22 are connect with the water side-entrance of heat exchangers for district heating 21, heat
The water side outlet of net heater 21 is connect with heat supply network water supplying pipe 48, and 20 No. three valves are equipped on heat supply network water supplying pipe 48
74。
The steam output end of second middle pressure steam branch pipe 43 is also connect with the air intake of steam accumulator 18, steam accumulator 18
Venthole is connect with the admission end of heating extraction steam pipe 45, and is separately installed with ten in the air intake of steam accumulator 18 and venthole
No. five valve 66 and ten No. six valves 67.
Oxygen-eliminating device 13 bypasses 41 steam output end, third reducing-and-cooling plant by deoxygenation extraction steam pipe 44 with low-pressure steam simultaneously
16 venthole, the venthole of steam accumulator 18 connect with the venthole of work device 19, and pacify on deoxygenation extraction steam pipe 44
Equipped with ten No. nine valves 70.
Work device 19 drives power-equipment 20 to do work, and work device 19 is back pressure machine or screw expander, power
Equipment 20 is generator, pumps for hot water supply net or condensate pump.
Third reducing-and-cooling plant 16, steam accumulator 18 and work device 19 be connected in parallel, while be oxygen-eliminating device
13 and heat exchangers for district heating 21 required steam is provided.
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 carrying out practically method of the present embodiment is as follows:
When unit is in pure condensate operating condition, when unregulated power peak regulation demand:
Only open the valve 54, six of No.1 valve 51, four valve 56, the valve 60, ten of hydraulic pressure butterfly valve 59, nine valve 61,
Ride on Bus No. 11 valve 62 and ten No. nine valve 70, combined cycle unit does not carry out heat supply externally, and the deoxygenation steam of oxygen-eliminating device 13 comes
From in the low pressure filling of low-pressure superheater 503；
When unit is in pure condensate operating condition, when having power peak regulation demand:
A, unit need reduce externally output electric load when, steam accumulation of heat is mainly carried out by steam accumulator 18, reduce into
Enter the steam flow of steam turbine acting, at this time:
No. five valve 55 and ten No. four valves 65 are opened, the 4th desuperheat is directly entered from the steam discharge of steam turbine high-pressure cylinder 6 and subtracts
Pressure device 17 is delivered to the progress accumulation of heat of steam accumulator 18 by opening ten No. five valves 66 after pressure and temperature reducing；
Alternatively, opening ten No. four valves, 65, No. seven valves 57 and No. eight valves 58, the hot steam again from reheater 505 is first
Primary pressure and temperature reducing is carried out by the second reducing-and-cooling plant 15, then carries out secondary desuperheat by the 4th reducing-and-cooling plant 17
Decompression is delivered to the progress accumulation of heat of steam accumulator 18 finally by ten No. five valves 66 are opened；
Alternatively, ten No. four valves, 65, No. two valves 52 and No. three valves 53 are opened, from the main steam of high-pressure superheater 506
It first passes through the first reducing-and-cooling plant 14 and carries out primary pressure and temperature reducing, then carry out desuperheat by the 4th reducing-and-cooling plant 17 and subtract
Pressure is delivered to the progress accumulation of heat of steam accumulator 18 finally by ten No. five valves 66 are opened；
B, unit need increase externally output electric load when, steam heat release is mainly carried out by steam accumulator 18, increase into
Enter the steam flow of steam turbine acting, at this time:
Ten No. five valves 66 are closed, ten No. six valves 67 are opened, steam accumulator 18 externally carries out steam heat release；At this point, closing
Ride on Bus No. 11 valve 62, opens ten No. nine valves 70, and steam accumulator 18 is that oxygen-eliminating device 13 provides deoxygenation steam；
Alternatively, opening simultaneously ride on Bus No. 11 valve 62 and ten No. nine valve 70, steam accumulator 18 both provided deoxygenation for oxygen-eliminating device 13
Steam, and low pressure filling is provided for turbine low pressure cylinder 8, to increase the steam flow to do work into turbine low pressure cylinder 8；
When unit is in supplying thermal condition, when unregulated power peak regulation demand:
Two No. ten valves 71, two ride on Bus No. 11 valves, 72,20 No. two valve 73 and 20 No. three valves 74 are opened, are first passed through hydrophobic
Heat exchanger 22 carries out primary heating to the heat supply network return water from heat supply network return pipe 47 using heating steam drainage, then is added by heat supply network
Hot device 21 carries out reheating to the heat supply network return water from hydrophobic heat exchanger 22 using heating steam, then by heat supply network water supplying pipe 48
Export external heat supply；
At this point, providing heating steam for heat exchangers for district heating 21, the specific operation method is as follows:
Ride on Bus No. 11 valve 62 is opened, is made using the steam discharge of low pressure filling or Steam Turbine Through IP Admission 7 from low-pressure superheater 503
For heating steam required for heat exchangers for district heating 21；
Alternatively, opening ten No. two valve 63 and ten No. four valves 64, middle pressure steam enters third reducing-and-cooling plant 16 by subtracting
Low-pressure steam is formed after temperature decompression, heat exchangers for district heating 21 is then delivered to by heating extraction steam pipe 45；
Alternatively, opening ten No. four valves, 65, ten No. seven valve 68 and ten No. eight valves 69, middle pressure steam is introduced into the 4th desuperheat and subtracts
Pressure device 17 carries out primary pressure and temperature reducing, forms low pressure after driving power-equipment 20 to be done work subsequently into work device 19 and steams
Vapour, then heat exchangers for district heating 21 is delivered to by heating extraction steam pipe 45；
When unit is in supplying thermal condition, when having power peak regulation demand:
A, unit need reduce externally output electric load when, steam accumulation of heat is mainly carried out by steam accumulator 18, reduce into
Enter the steam flow of steam turbine acting, concrete operations are as follows:
It opens ten No. five valves 66, closes ten No. six valves 67, steam is also after 17 pressure and temperature reducing of the 4th reducing-and-cooling plant
The progress accumulation of heat of steam accumulator 18 is delivered to be lowered into increase the steam flow into the 4th reducing-and-cooling plant 17
The steam flow of steam turbine acting；
B, unit need increase externally output electric load when, steam heat release is mainly carried out by steam accumulator 18, increase into
Enter the steam flow of steam turbine acting, concrete operations are as follows:
Ten No. five valves 66 are closed, ten No. six valves 67 are opened, steam accumulator 18 externally carries out steam heat release；At this point, also closing
The small or closing valve 63,13 of ride on Bus No. 11 valve 62,12 valve 64,14 valve 68 and ten of valve 65,17
No. eight valves 69, heating steam source required for heat exchangers for district heating 21 are mainly steam accumulator 18 or only steam accumulator
18。
In the carrying out practically method of the present embodiment:
There is provided middle pressure steam for third reducing-and-cooling plant 16 and the 4th reducing-and-cooling plant 17, the specific operation method is as follows:
No. five valves 55 are opened, using the steam discharge from steam turbine high-pressure cylinder 6 directly as 16 He of third reducing-and-cooling plant
The middle pressure steam source of 4th reducing-and-cooling plant 17；
Alternatively, opening No. seven valves 57 and No. eight valves 58, steam is filled the heat from reheater 505 by the second pressure and temperature reducing again
The lower steam of pressure and temperature is formed after setting 15, as third reducing-and-cooling plant 16 and the 4th reducing-and-cooling plant 17
Middle pressure steam source；
Alternatively, opening No. two valves 52 and No. three valves 53, the main steam from high-pressure superheater 506 passes through the first pressure and temperature reducing
The lower steam of pressure and temperature is formed after device 14, as third reducing-and-cooling plant 16 and the 4th reducing-and-cooling plant 17
Middle pressure steam source.
In the carrying out practically method of the present embodiment:
When unit be heat exchangers for district heating 21 heating steam is provided when, the low pressure filling of preferential Selection utilization low-pressure superheater 503 or
The steam discharge of Steam Turbine Through IP Admission 7, the steam discharge of next Selection utilization work device 19, last Selection utilization third reducing-and-cooling plant
16 pressure and temperature reducing steam；
When unit is third reducing-and-cooling plant 16 and the 4th reducing-and-cooling plant 17 provides middle pressure steam, preferential Selection utilization
The high pressure steam discharge of steam turbine high-pressure cylinder 6, the hot steam again of next Selection utilization reheater 505, last Selection utilization high pressure superheater
The main steam of device 506.
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 59, other valves all have the function of truncation.
In the carrying out practically method of the present embodiment, in supplying thermal condition, the valvular aperture regulation of institute is followed by combining
The DCS control system of ring unit, which remotely operates, to be completed；In addition, the refill flow of the combined cycle unit feed water system of boiler mainly by
Steam accumulator 18 carries out storing exothermic steam flow to determine.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (9)
1. a kind of combined cycle power plant coupled based on heat supply with power peak regulation characterized by comprising gas turbine group and steaming
Steam Turbine；
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 the gas turbine turbine (3) drives the
One generator (4) power generation, and gas turbine turbine (3) and gas turbine blower (1) are 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), the second generator (9), condenser (10), condensate pump (11), gland heater (12), oxygen-eliminating device (13), first subtract
Warm decompressor (14), the second reducing-and-cooling plant (15), third reducing-and-cooling plant (16), the 4th reducing-and-cooling plant
(17), steam accumulator (18), work device (19), power-equipment (20), heat exchangers for district heating (21), hydrophobic heat exchanger (22) and
Pumps for hot water supply net (23), the steam turbine high-pressure cylinder (6), Steam Turbine Through IP Admission (7) and turbine low pressure cylinder (8) are coaxially connected,
And driving the second generator (9) power generation, 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-gas preheater (501)
Water outlet is connect with the water inlet of the water inlet of low-pressure drum (502) and HP steam drum (504) simultaneously, the low-pressure drum
(502) venthole is connect with the air intake of low-pressure superheater (503), and the venthole of the HP steam drum (504) is pressed through with height
The air intake of hot device (506) connects, and the air intake of the steam turbine high-pressure cylinder (6) passes through high-pressure steam pipe (33) and high pressure superheater
The venthole of device (506) connects, and is equipped with No.1 valve (51), the steam turbine in the air intake of steam turbine high-pressure cylinder (6)
The steam drain of 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 No. four valves (54) are installed, the venthole of the reheater (505) passes through heat steam pipe (35) and steam turbine again
The air intake of intermediate pressure cylinder (7) connects, and is equipped with No. six valves (56), the steamer in the air intake of Steam Turbine Through IP Admission (7)
The steam drain of machine intermediate pressure cylinder (7) is connect by communicating pipe (36) with the air intake of turbine low pressure cylinder (8), and in steam turbine low-pressure
The air intake of cylinder (8) is equipped with hydraulic pressure butterfly valve (59), and the communicating pipe (36) connect with one end of low pressure steam pipe (37), and
One end of low pressure steam pipe (37) is equipped with No. nine valves (60), the venthole and low-pressure steam of the low-pressure superheater (503)
The other end connection of (37) is managed, and No. ten valves (61) are installed in the other end of low pressure steam pipe (37), the 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), the pot
The water outlet of furnace feed pipe (32) is connect with the water inlet of smoke-gas preheater (501), and along dampening on boiler feed pipe (32)
Flow direction is sequentially installed with condensate pump (11), gland heater (12) and oxygen-eliminating device (13), and high steam bypasses (38)
Admission end is connect with high-pressure steam pipe (33), the steam output end and the first middle pressure steam branch pipe (42) of the high steam bypass (38)
Admission end connection, and be sequentially installed with No. two valves (52), the along steam flow direction in high steam bypass (38)
One reducing-and-cooling plant (14) and No. three valves (53), the steam output end of the first middle pressure steam branch pipe (42) subtract with third desuperheat
The air intake of pressure device (16) connects, and ten No. two valves (63) are equipped on the first middle pressure steam branch pipe (42), cold to steam again
The admission end of vapour bypass (39) is connect with cold steam pipe again (34), is pressed in the steam output end and first of the cold steam by-pass again (39)
The admission end of steam branch pipe (42) connects, and No. five valves (55) are equipped on cold steam by-pass again (39), and heat is again by steam
Steam pipe (35) is connect the admission end on road (40) again with heat, the steam output end and the first middle pressure steam of the hot steam by-pass (40) again
The admission end of branch pipe (42) connects, and is sequentially installed with No. seven valves along steam flow direction in heat again steam by-pass (40)
(57), the second reducing-and-cooling plant (15) and No. eight valves (58), low-pressure steam bypass the admission end and low pressure steam pipe of (41)
(37) it connects, the steam output end of the low-pressure steam bypass (41) is connect with the admission end of heating extraction steam pipe (45), and is steamed in low pressure
It is equipped with ride on Bus No. 11 valve (62) in vapour bypass (41), steam output end and heat exchangers for district heating (21) of the heating extraction steam pipe (45)
Air intake connection, and two No. ten valves (71) are installed on heating extraction steam pipe (45), the third reducing-and-cooling plant (16)
Venthole connect with the admission end of heating extraction steam pipe (45), and be equipped with ten in the venthole of third reducing-and-cooling plant (16)
No. three valves (64), the admission end of the second middle pressure steam branch pipe (43) are connect with the admission end of the first middle pressure steam branch pipe (42),
And ten No. four valves (65) and the 4th desuperheat are sequentially installed with along steam flow direction on the second middle pressure steam branch pipe (43)
The steam output end of decompressor (17), the second middle pressure steam branch pipe (43) is connect with the air intake of work device (19), acting
The venthole of equipment (19) is connect with the admission end of heating extraction steam pipe (45), and in the air intake and venthole of work device (19)
Ten No. seven valves (68) and ten No. eight valves (69) are separately installed with, the hydrophobic outlet of the heat exchangers for district heating (21) is changed with hydrophobic
The hydrophobic import connection of the high temperature of hot device (22), the hydrophobic outlet of the low temperature of hydrophobic heat exchanger (22) pass through drain pipe (46) and condensed water
The water inlet connection for pumping (11), and is equipped with two ride on Bus No. 11 valves (72) on drain pipe (46), heat supply network return pipe (47) and dredges
The water at low temperature side-entrance of water- to-water heat exchanger (22) connects, and 20 No. two valves (73) and heat are equipped on heat supply network return pipe (47)
The water at low temperature side outlet of net circulating pump (23), the hydrophobic heat exchanger (22) is connect with the water side-entrance of heat exchangers for district heating (21),
The water side outlet of heat exchangers for district heating (21) is connect with heat supply network water supplying pipe (48), and is equipped with 23 on heat supply network water supplying pipe (48)
Number valve (74).
2. the combined cycle power plant according to claim 1 coupled based on heat supply with power peak regulation, which is characterized in that described
The steam output end of second middle pressure steam branch pipe (43) is also connect with the air intake of steam accumulator (18), and steam accumulator (18) goes out
Steam ports is connect with the admission end of heating extraction steam pipe (45), and is separately installed in the air intake of steam accumulator (18) and venthole
Ten No. five valves (66) and ten No. six valves (67).
3. the combined cycle power plant according to claim 1 coupled based on heat supply with power peak regulation, which is characterized in that described
Oxygen-eliminating device (13) bypasses steam output end, the third reducing-and-cooling plant of (41) by deoxygenation extraction steam pipe (44) with low-pressure steam simultaneously
(16) venthole of venthole, steam accumulator (18) is connected with the venthole of work device (19), and in deoxygenation extraction steam pipe
(44) ten No. nine valves (70) are installed on.
4. the combined cycle power plant according to claim 1 coupled based on heat supply with power peak regulation, which is characterized in that described
Work device (19) driving power-equipment (20) is done work, and work device (19) is back pressure machine or screw expander, and power is set
Standby (20) are generator, pumps for hot water supply net or condensate pump.
5. the combined cycle power plant according to claim 1 coupled based on heat supply with power peak regulation, which is characterized in that described
Third reducing-and-cooling plant (16), steam accumulator (18) and work device (19) be connected in parallel, while be oxygen-eliminating device
(13) and heat exchangers for district heating (21) provides required steam.
6. the combined cycle power plant according to claim 1 coupled based on heat supply with power peak regulation, which is characterized in that described
The admission end of second middle pressure steam branch pipe (43) also bypasses steam output end, the cold steam by-pass again (39) of (38) with high steam simultaneously
Steam output end connected with the steam output end of heat steam by-pass (40) again.
7. a kind of fortune of such as combined cycle power plant of any of claims 1-6 coupled based on heat supply with power peak regulation
Row method, which is characterized in that the operation method is as follows:
When unit is in pure condensate operating condition, when unregulated power peak regulation demand:
Only open No.1 valve (51), No. four valves (54), No. six valves (56), hydraulic pressure butterfly valve (59), No. nine valves (60), ten
Number valve (61), ride on Bus No. 11 valve (62) and ten No. nine valves (70), combined cycle unit do not carry out heat supply, and oxygen-eliminating device externally
(13) low pressure filling of the deoxygenation steam from low-pressure superheater (503)；
When unit is in pure condensate operating condition, when having power peak regulation demand:
A, it when unit needs to reduce externally output electric load, mainly by steam accumulator (18) Lai Jinhang steam accumulation of heat, reduces
The steam flow to do work into steam turbine, at this time:
No. five valves (55) and ten No. four valves (65) are opened, the steam discharge from steam turbine high-pressure cylinder (6) is directly entered the 4th
Reducing-and-cooling plant (17) is delivered to steam accumulator (18) progress by opening ten No. five valves (66) after pressure and temperature reducing
Accumulation of heat；
Alternatively, opening ten No. four valves (65), No. seven valves (57) and No. eight valves (58), the heat from reheater (505)
Steam first passes through the second reducing-and-cooling plant (15) and carries out primary pressure and temperature reducing again, then passes through the 4th reducing-and-cooling plant (17)
Secondary pressure and temperature reducing is carried out, is delivered to steam accumulator (18) progress accumulation of heat finally by ten No. five valves (66) are opened；
Alternatively, ten No. four valves (65), No. two valves (52) and No. three valves (53) are opened, from high-pressure superheater (506)
Main steam first pass through the first reducing-and-cooling plant (14) and carry out primary pressure and temperature reducing, then pass through the 4th reducing-and-cooling plant
(17) pressure and temperature reducing is carried out, is delivered to steam accumulator (18) progress accumulation of heat finally by ten No. five valves (66) are opened；
B, when unit needs to increase externally output electric load, mainly by steam accumulator (18) Lai Jinhang steam heat release, increase
The steam flow to do work into steam turbine, at this time:
Ten No. five valves (66) are closed, ten No. six valves (67) are opened, steam accumulator (18) externally carries out steam heat release；This
When, it closes ride on Bus No. 11 valve (62), opens ten No. nine valves (70), steam accumulator (18) is that oxygen-eliminating device (13) provide deoxygenation steaming
Vapour；
Alternatively, opening simultaneously ride on Bus No. 11 valve (62) and ten No. nine valves (70), steam accumulator (18) is both oxygen-eliminating device (13)
Deoxygenation steam is provided, and provides low pressure filling for turbine low pressure cylinder (8), is done work to increase into turbine low pressure cylinder (8)
Steam flow；
When unit is in supplying thermal condition, when unregulated power peak regulation demand:
No. tri- two No. ten valves (71), two ride on Bus No. 11 valves (72), 20 No. two valve (73) He Ershi valves (74) are opened, first
Primary heating is carried out to the heat supply network return water from heat supply network return pipe (47) using heating steam drainage by hydrophobic heat exchanger (22),
Reheating is carried out to the heat supply network return water from hydrophobic heat exchanger (22) using heating steam by heat exchangers for district heating (21) again, so
External heat supply is exported by heat supply network water supplying pipe (48) afterwards；
At this point, providing heating steam for heat exchangers for district heating (21), the specific operation method is as follows:
It opens ride on Bus No. 11 valve (62), utilizes the low pressure filling or Steam Turbine Through IP Admission (7) from low-pressure superheater (503)
Steam discharge is as heating steam required for heat exchangers for district heating (21)；
Alternatively, ten No. two valves (63) of opening and ten No. four valves (64), middle pressure steam enter third reducing-and-cooling plant (16)
Low-pressure steam is formed after pressure and temperature reducing, and heat exchangers for district heating (21) are then delivered to by heating extraction steam pipe (45)；
Alternatively, opening ten No. four valves (65), ten No. seven valves (68) and ten No. eight valves (69), middle pressure steam is introduced into the 4th
Reducing-and-cooling plant (17) carries out primary pressure and temperature reducing, does work subsequently into work device (19) driving power-equipment (20)
After form low-pressure steam, then heat exchangers for district heating (21) are delivered to by heating extraction steam pipe (45)；
When unit is in supplying thermal condition, when having power peak regulation demand:
A, it when unit needs to reduce externally output electric load, mainly by steam accumulator (18) Lai Jinhang steam accumulation of heat, reduces
The steam flow to do work into steam turbine, concrete operations are as follows:
Ten No. five valves (66) are opened, ten No. six valves (67) are closed, after the 4th reducing-and-cooling plant (17) pressure and temperature reducing
Steam is also delivered to steam accumulator (18) and carries out accumulation of heat, to increase the steam stream into the 4th reducing-and-cooling plant (17)
Amount is lowered into the steam flow of steam turbine acting；
B, when unit needs to increase externally output electric load, mainly by steam accumulator (18) Lai Jinhang steam heat release, increase
The steam flow to do work into steam turbine, concrete operations are as follows:
Ten No. five valves (66) are closed, ten No. six valves (67) are opened, steam accumulator (18) externally carries out steam heat release；This
When, it is also turn off ride on Bus No. 11 valve (62), ten No. two valves (63), ten No. three valves (64), ten No. four valves (65), ten No. seven valves
Door (68) and ten No. eight valves (69), heating steam source required for heat exchangers for district heating (21) is only steam accumulator (18).
8. the operation method of the combined cycle power plant according to claim 7 coupled based on heat supply with power peak regulation, special
Sign is,
The concrete operation method of middle pressure steam is provided such as third reducing-and-cooling plant (16) and the 4th reducing-and-cooling plant (17)
Under:
No. five valves (55) are opened, using the steam discharge from steam turbine high-pressure cylinder (6) directly as third reducing-and-cooling plant
(16) and the middle pressure steam source of the 4th reducing-and-cooling plant (17)；
Alternatively, opening No. seven valves (57) and No. eight valves (58), steam passes through the second desuperheat to the heat from reheater (505) again
Decompressor (15) forms the lower steam of pressure and temperature afterwards, subtracts as third reducing-and-cooling plant (16) and the 4th desuperheat
The middle pressure steam source of pressure device (17)；
Alternatively, opening No. two valves (52) and No. three valves (53), the main steam from high-pressure superheater (506) subtracts by first
Warm decompressor (14) forms the lower steam of pressure and temperature afterwards, as third reducing-and-cooling plant (16) and the 4th desuperheat
The middle pressure steam source of decompressor (17).
9. the operation method of the combined cycle power plant according to claim 7 coupled based on heat supply with power peak regulation, special
Sign is,
When unit is that heat exchangers for district heating (21) provide 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 (19), last Selection utilization third desuperheat
The pressure and temperature reducing steam of decompressor (16)；
It is preferential to select when unit is third reducing-and-cooling plant (16) and the 4th reducing-and-cooling plant (17) provides middle pressure steam
Using the high pressure steam discharge of steam turbine high-pressure cylinder (6), the hot steam again of next Selection utilization reheater (505), last Selection utilization
The main steam of high-pressure superheater (506).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108096.6A CN109855147B (en) | 2019-02-02 | 2019-02-02 | Combined cycle device based on heat supply and power peak regulation coupling and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108096.6A CN109855147B (en) | 2019-02-02 | 2019-02-02 | Combined cycle device based on heat supply and power peak regulation coupling and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109855147A true CN109855147A (en) | 2019-06-07 |
| CN109855147B CN109855147B (en) | 2023-04-28 |
Family
ID=66897666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910108096.6A Active CN109855147B (en) | 2019-02-02 | 2019-02-02 | Combined cycle device based on heat supply and power peak regulation coupling and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109855147B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247410A (en) * | 2019-06-11 | 2019-09-17 | 中国神华能源股份有限公司 | A kind of peak regulation processing method of thermal power plant unit, apparatus and system |
| CN110566295A (en) * | 2019-07-27 | 2019-12-13 | 华电电力科学研究院有限公司 | Double-unit coupling peak shaving method and device based on power plant electricity and heat load cooperative scheduling |
| CN111219702A (en) * | 2020-01-16 | 2020-06-02 | 华电电力科学研究院有限公司 | System safety protection device for heat supply during shutdown of steam turbine and operation method thereof |
| CN112833378A (en) * | 2020-12-28 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Reheating system capable of improving heat supply capacity |
| CN113007765A (en) * | 2021-02-26 | 2021-06-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
| CN113638807A (en) * | 2021-09-15 | 2021-11-12 | 西安热工研究院有限公司 | Heating system and method for bypass auxiliary cylinder cutting of gas-steam combined cycle unit |
| CN114017149A (en) * | 2021-09-18 | 2022-02-08 | 华能国际电力江苏能源开发有限公司南通电厂 | Heat supply steam source matching system and method under deep peak regulation working condition |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH613255A5 (en) * | 1976-11-25 | 1979-09-14 | Sulzer Ag | System for the utilisation of waste heat from a gas flow to drive electrical generators |
| CN1807860A (en) * | 2005-01-20 | 2006-07-26 | 华南理工大学 | Smoke low-temperature residual heat utilization system with natural gas cooling-heating combined power device and operating method thereof |
| US20120137698A1 (en) * | 2009-07-13 | 2012-06-07 | Sjoedin Mats | Cogeneration plant and cogeneration method |
| CN103644004A (en) * | 2013-12-20 | 2014-03-19 | 上海电气电站设备有限公司 | Double-turbine and combined cycle heat and power combined supply system |
| DE102012110579A1 (en) * | 2012-11-05 | 2014-05-08 | Esi Gmbh | System for generating process steam, has expansion arrangement to perform expansion of partial stream on lower pressure level, and steam engine to drive generator to produce electric power by high pressurized partial steam |
| US20170131037A1 (en) * | 2015-02-12 | 2017-05-11 | Tsinghua University | Combined heating power and cooling apparatus with energy storage type adapted to an active distribution network and its method |
| US20180223699A1 (en) * | 2015-01-08 | 2018-08-09 | Tsinghua University | Gas-steam combined cycle centralized heat supply device and heat supply method |
| CN108709216A (en) * | 2018-05-28 | 2018-10-26 | 华北电力大学 | A kind of Combined cycle gas-steam turbine and decarbonization system combining heating system |
-
2019
- 2019-02-02 CN CN201910108096.6A patent/CN109855147B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH613255A5 (en) * | 1976-11-25 | 1979-09-14 | Sulzer Ag | System for the utilisation of waste heat from a gas flow to drive electrical generators |
| CN1807860A (en) * | 2005-01-20 | 2006-07-26 | 华南理工大学 | Smoke low-temperature residual heat utilization system with natural gas cooling-heating combined power device and operating method thereof |
| US20120137698A1 (en) * | 2009-07-13 | 2012-06-07 | Sjoedin Mats | Cogeneration plant and cogeneration method |
| DE102012110579A1 (en) * | 2012-11-05 | 2014-05-08 | Esi Gmbh | System for generating process steam, has expansion arrangement to perform expansion of partial stream on lower pressure level, and steam engine to drive generator to produce electric power by high pressurized partial steam |
| CN103644004A (en) * | 2013-12-20 | 2014-03-19 | 上海电气电站设备有限公司 | Double-turbine and combined cycle heat and power combined supply system |
| US20180223699A1 (en) * | 2015-01-08 | 2018-08-09 | Tsinghua University | Gas-steam combined cycle centralized heat supply device and heat supply method |
| US20170131037A1 (en) * | 2015-02-12 | 2017-05-11 | Tsinghua University | Combined heating power and cooling apparatus with energy storage type adapted to an active distribution network and its method |
| CN108709216A (en) * | 2018-05-28 | 2018-10-26 | 华北电力大学 | A kind of Combined cycle gas-steam turbine and decarbonization system combining heating system |
Non-Patent Citations (2)
| Title |
|---|
| 俞聪;周崇波;: "复合余热回收利用技术在热电厂的应用及热经济性分析" * |
| 刘祥源,李宇红,武小兵,叶大均: "燃气轮机热电冷联产***的优化设计与运行" * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247410A (en) * | 2019-06-11 | 2019-09-17 | 中国神华能源股份有限公司 | A kind of peak regulation processing method of thermal power plant unit, apparatus and system |
| CN110247410B (en) * | 2019-06-11 | 2021-05-28 | 中国神华能源股份有限公司 | Peak regulation processing method, device and system for heat supply unit |
| CN110566295A (en) * | 2019-07-27 | 2019-12-13 | 华电电力科学研究院有限公司 | Double-unit coupling peak shaving method and device based on power plant electricity and heat load cooperative scheduling |
| CN110566295B (en) * | 2019-07-27 | 2021-11-26 | 华电电力科学研究院有限公司 | Double-unit coupling peak shaving method and device based on power plant electricity and heat load cooperative scheduling |
| CN111219702A (en) * | 2020-01-16 | 2020-06-02 | 华电电力科学研究院有限公司 | System safety protection device for heat supply during shutdown of steam turbine and operation method thereof |
| CN111219702B (en) * | 2020-01-16 | 2021-04-13 | 华电电力科学研究院有限公司 | System safety protection device for heat supply during shutdown of steam turbine and operation method thereof |
| CN112833378A (en) * | 2020-12-28 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Reheating system capable of improving heat supply capacity |
| CN113007765A (en) * | 2021-02-26 | 2021-06-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
| CN113007765B (en) * | 2021-02-26 | 2022-03-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
| CN113638807A (en) * | 2021-09-15 | 2021-11-12 | 西安热工研究院有限公司 | Heating system and method for bypass auxiliary cylinder cutting of gas-steam combined cycle unit |
| CN114017149A (en) * | 2021-09-18 | 2022-02-08 | 华能国际电力江苏能源开发有限公司南通电厂 | Heat supply steam source matching system and method under deep peak regulation working condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109855147B (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109855147A (en) | A kind of combined cycle power plant and its operation method coupled based on heat supply with power peak regulation | |
| CN103452611B (en) | Combined-cycle combined heat and power system | |
| CN109826681A (en) | A kind of the industrial 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 | |
| CN109869204A (en) | A kind of heat supply for Combined cycle gas-steam turbine unit and power peak regulation coupled system and its operation method | |
| CN103644004B (en) | The cogeneration system of a kind of pair of turbine, combined cycle | |
| CN206267896U (en) | Combined cycle two-shipper condensing-back pressure formula is drawn gas cogeneration system | |
| CN109854315A (en) | A kind of heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction | |
| CN109869786A (en) | A kind of extraction for heat supply integrated system and its operation method for combined cycle unit power peak regulation | |
| CN109854316A (en) | A kind of combined cycle heat supply based on energy cascade utilization and power peak regulation coupled system and its operation method | |
| CN109854319A (en) | A kind of matched combined cycle extraction for heat supply integrated system of coupling pressure and its operation method | |
| CN106194297A (en) | The double branch road heating system of a kind of cogeneration turbine | |
| CN112856363B (en) | System and method for improving heat supply steam parameters of deep peak shaving heat supply unit | |
| 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 | |
| CN203499735U (en) | Combined cycle co-generation system | |
| CN209726304U (en) | A kind of extraction for heat supply integrated system for combined cycle unit power peak regulation | |
| CN209621420U (en) | A kind of heat supply for Combined cycle gas-steam turbine unit and power peak regulation coupled system | |
| CN209724435U (en) | A kind of solidifying pumping back coupling steam extraction integrated system for thermoelectricity unit power peak regulation | |
| CN214660400U (en) | Multistage steam extraction back pressure type small steam turbine grading heat regeneration and heating system | |
| CN112833378B (en) | Reheating system capable of improving heat supply capacity | |
| CN210179723U (en) | Combined cycle device based on heat supply and electric power peak regulation coupling | |
| CN106194431A (en) | Gas turbine presurized water reactor steam turbine combined cycle without separator | |
| 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 | |
| CN210088955U (en) | Combined cycle device for steam extraction integration and heat storage peak regulation coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |