CN110056402A - Steam surplus energy utility for coal-fired thermal power unit power peak regulation couples extraction for heat supply system and adjusting method - Google Patents
Steam surplus energy utility for coal-fired thermal power unit power peak regulation couples extraction for heat supply system and adjusting method Download PDFInfo
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- CN110056402A CN110056402A CN201910229910.XA CN201910229910A CN110056402A CN 110056402 A CN110056402 A CN 110056402A CN 201910229910 A CN201910229910 A CN 201910229910A CN 110056402 A CN110056402 A CN 110056402A
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- 238000000605 extraction Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/44—Use of steam for feed-water heating and another purpose
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of steam surplus energy utilities for coal-fired thermal power unit power peak regulation to couple extraction for heat supply system and adjusting method, belongs to cogeneration of heat and power technical field.The system includes: steam turbine high-pressure cylinder, reheater, Steam Turbine Through IP Admission, turbine low pressure cylinder, steam generator, pressure matcher, oxygen-eliminating device, No. two feed pumps and industrial heat user；Steam generator is using the hot steam again from reheater as heat source, the low temperature feedwater from oxygen-eliminating device is heated to produce high steam, as the high-pressure steam source of pressure matcher, the extraction steam for factories from Steam Turbine Through IP Admission is driven, produces steam required for industrial heat user.The present invention realizes the power peak regulation of coal-fired thermal power unit so that coal-fired thermal power unit effectively meets extraneous steam supply demand in high and low load operation Shi Junneng by the coupling of pressure matcher and steam generator and original extraction steam for factories mode.It can be seen that the present invention is worth with biggish practice.
Description
Technical field
The invention belongs to cogeneration of heat and power technical fields, and in particular to a kind of steam for coal-fired thermal power unit power peak regulation
Surplus energy utility couples extraction for heat supply system and adjusting method.
Background technique
Currently, for having been carried out the steam power plant of extraction steam for factories central heating in early days, since heat supply process is simply extensive, energy
Amount loss is serious, so that the comprehensive energy utilization efficiency of steam power plant can not further increase, many has carried out industrial heating
Steam power plant does not realize profit, or even the case where lose.Causing this phenomenon main cause is exactly unit heat supply design
It is all by operating condition design, and in actual operation, unit load fluctuation frequently, when especially unit is in underrun, is
Meet steam parameter needed for industrial heating, usually all using modes such as throttlings, caused energy loss is extremely serious, thus
Causing thermoelectricity unit cannot achieve profit.
Currently, the main patented technology in the field: (1) mesolow connection butterfly valve adjusts joint hot press mesolow industry steam supply
Method and system " patent No. 201610320911.1 " and (2) novel heat-power cogeneration steam turbine " patent No.
200810013170.8 ", there is following technical limitations, first is that the degree of superheat of high parameter steam is underutilized, two
Be the high and low pressure steam of hot press or pressure matcher temperature parameter it is non-adjustable, hot press or pressure matcher can not be promoted
Efficiency numbers.Therefore, which throws away in terms of improving efficiency has some limitations.
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
Reliably, the steam surplus energy utility coupling extraction for heat supply system and adjusting method of coal-fired thermal power unit power peak regulation are advantageously implemented.
Technical solution used by the present invention solves the above problems is: a kind of steaming for coal-fired thermal power unit power peak regulation
Vapour surplus energy utility couples extraction for heat supply system, which is characterized in that it includes: steam turbine high-pressure cylinder, reheater, presses in steam turbine
Cylinder, turbine low pressure cylinder, steam generator, pressure matcher, oxygen-eliminating device, No. two feed pumps and industrial heat user, the steamer
The steam drain of machine high pressure cylinder and the air intake of reheater connect, and the venthole of the reheater passes through hot steam pipe and steam turbine again
The air intake of intermediate pressure cylinder connects, and No.1 valve is equipped in heat again steam pipe, and the steam drain of the Steam Turbine Through IP Admission is logical
The air intake for spending mesolow communicating pipe and turbine low pressure cylinder connects, and is equipped with hydraulic pressure butterfly valve on mesolow communicating pipe, institute
The venthole for stating reheater also passes through the heat high temperature air intake of steam branch pipe and steam generator connection again, and in hot steam branch again
No. two valves are installed on pipe, the low temperature venthole of the steam generator is connect by the first steam pipe with industrial steam supply pipe,
And No. five valves are installed on the first steam pipe, the low temperature water inlet of the steam generator passes through feed pipe and oxygen-eliminating device
Water outlet connection, and No. three valves and No. two feed pumps, the steam are sequentially installed with along water flowing direction on feed pipe
The high pressure venthole of generator is connected by the high-pressure admission mouth of high-pressure steam pipe and pressure matcher, and on high-pressure steam pipe
No. four valves are installed, the extraction steam for factories mouth of the Steam Turbine Through IP Admission is connect by extraction steam for factories pipe with industrial steam supply pipe, and
No. six valves are installed on extraction steam for factories pipe, the extraction steam for factories mouth of the Steam Turbine Through IP Admission also pass through extraction steam for factories branch pipe with
The low pressure admission mouth of pressure matcher connects, and No. seven valves are equipped on extraction steam for factories branch pipe, the pressure matcher
Middle extrusion steam ports is connect by the second steam pipe with industrial steam supply pipe, and No. eight valves are equipped on the second steam pipe, described
The steam output end of industrial steam supply pipe is connect with industrial heat user.
Furthermore, oxygen-eliminating device of the low temperature feedwater from coal-fired thermal power unit needed for the steam generator utilizes
The boiler feedwater of low pressure regenerative steam heating in oxygen-eliminating device Jing Guo Steam Turbine Through IP Admission reduces steam generation as low temperature feedwater
The high parameter steam energy consumed in device.
Furthermore, the steam generator using the heat from reheater again steam as heat source, by heat come
High steam is produced from the low temperature feedwater of oxygen-eliminating device.
Furthermore, the pressure matcher is using the high steam driving from steam generator in steam turbine
The extraction steam for factories of cylinder pressure, middle pressure steam needed for producing industrial heat user.
Furthermore, extraction steam for factories of the steam needed for the industrial heat user from Steam Turbine Through IP Admission, pressure
The middle pressure steam of orchestration production and the hot steam again after steam generator desuperheat.
The adjusting side of the steam surplus energy utility coupling extraction for heat supply system for coal-fired thermal power unit power peak regulation
Method is as follows:
When coal-fired thermal power unit heavy-duty service, at this time:
No.1 valve and hydraulic pressure butterfly valve are opened, opens and adjusts No. six valves, the extraction steam for factories of Steam Turbine Through IP Admission passes sequentially through
Extraction steam for factories pipe and industrial steam supply pipe are delivered to industrial heat user；
When coal-fired thermal power performing low-load running of machine set, at this time:
Close No. six valves, open hydraulic pressure butterfly valve, open and adjust No.1 valve, No. two valves, No. three valves, No. four valves,
No. five valves, No. seven valves and No. eight valves, by heat, steam branch pipe is delivered to steam hair to steam to the heat from reheater again again
Raw device, heats the low temperature feedwater from oxygen-eliminating device to produce high steam, the heat after steam generator desuperheat again steam according to
Secondary the first steam pipe and the industrial steam supply pipe of passing through is delivered to industrial heat user, and the high steam that steam generator generates passes through high pressure
Steam pipe enters pressure matcher, and the extraction steam for factories from Steam Turbine Through IP Admission is driven to produce middle pressure steam, pressure matcher
The middle pressure steam of generation passes sequentially through the second steam pipe and industrial steam supply pipe is delivered to industrial heat user.
The adjusting side of the above-mentioned steam surplus energy utility coupling extraction for heat supply system for coal-fired thermal power unit power peak regulation
In method:
During coal-fired thermal power unit participates in power peak regulation, when coal-fired thermal power unit heavy-duty service, merely with steam turbine
The extraction steam for factories of intermediate pressure cylinder is as steam needed for industrial heat user, when coal-fired thermal power performing low-load running of machine set, merely with pressure
The middle pressure steam that power adaptation produces and the hot steam again after steam generator desuperheat are as steaming needed for industrial heat user
Vapour.
Compared with prior art, the present invention having the following advantages that and effect: rationally, structure is simple, reliable performance for design, closes
Reason couples extraction for heat supply system designed for the steam surplus energy utility of coal-fired thermal power unit power peak regulation, to realize: (1) utilizing
Steam produces high steam to heat from reheater again, sufficiently recycles the degree of superheat of hot steam again；(2) using in oxygen-eliminating device
The boiler feedwater of low pressure regenerative steam heating by Steam Turbine Through IP Admission is reduced and is consumed in steam generator as low temperature feedwater
High parameter steam energy；(3) by adjusting the high steam parameter of steam generator production, the parameter with pressure matcher is realized
Matching, further increases the performance of pressure matcher；(4) pass through pressure matcher and steam generator and original extraction steam for factories side
The coupling of formula is realized coal-fired so that coal-fired thermal power unit effectively meets extraneous steam supply demand in high and low load operation Shi Junneng
The power peak regulation of thermoelectricity unit.It can be seen that the present invention is worth with biggish practice.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
Fig. 2 is the heat regenerative system structural schematic diagram of coal-fired thermal power unit 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.
Referring to Fig. 1 to Fig. 2, the steam surplus energy utility for coal-fired thermal power unit power peak regulation in the present embodiment, which couples, to be taken out
Vapour heating system, it includes: steam turbine high-pressure cylinder 1, reheater 2, Steam Turbine Through IP Admission 3, turbine low pressure cylinder 4, steam generation
Device 5, pressure matcher 6,7, No. two feed pumps 8 of oxygen-eliminating device and industrial heat user 9, the steam drain and reheating of steam turbine high-pressure cylinder 1
The air intake of device 2 connects, and by heat, steam pipe 22 is connect the venthole of reheater 2 with the air intake of Steam Turbine Through IP Admission 3 again, and
No.1 valve 11 is installed in heat again steam pipe 22, the steam drain of Steam Turbine Through IP Admission 3 passes through mesolow communicating pipe 21 and vapour
The air intake of turbine low pressure (LP) cylinder 4 connects, and hydraulic pressure butterfly valve 12 is equipped on mesolow communicating pipe 21, the venthole of reheater 2
Also by heat, steam branch pipe 23 is connect with the high temperature air intake of steam generator 5 again, and is equipped in heat again steam branch pipe 23
The low temperature venthole of No. two valves 13, steam generator 5 is connect by the first steam pipe 26 with industrial steam supply pipe 30, and first
No. five valves 16 are installed, the low temperature water inlet of steam generator 5 passes through the water outlet of feed pipe 24 and oxygen-eliminating device 7 on steam pipe 26
Mouth connection, and No. three valves 14 and No. two feed pumps 8, steam generation are sequentially installed with along water flowing direction on feed pipe 24
The high pressure venthole of device 5 is connect by high-pressure steam pipe 25 with the high-pressure admission mouth of pressure matcher 6, and in high-pressure steam pipe 25
On No. four valves 15 are installed, the extraction steam for factories mouth of Steam Turbine Through IP Admission 3 is connected by extraction steam for factories pipe 27 and industrial steam supply pipe 30
It connects, and No. six valves 17 is installed on extraction steam for factories pipe 27, the extraction steam for factories mouth of Steam Turbine Through IP Admission 3 also passes through extraction steam for factories
Branch pipe 28 is connect with the low pressure admission mouth of pressure matcher 6, and No. seven valves 18, pressure are equipped on extraction steam for factories branch pipe 28
The middle extrusion steam ports of adaptation 6 is connect by the second steam pipe 29 with industrial steam supply pipe 30, and is installed on the second steam pipe 29
There are No. eight valves 19, the steam output end of industrial steam supply pipe 30 is connect with industrial heat user 9.
In the present embodiment, oxygen-eliminating device 7 of the low temperature feedwater needed for steam generator 5 from coal-fired thermal power unit utilizes
The boiler feedwater of low pressure regenerative steam heating in oxygen-eliminating device 7 Jing Guo Steam Turbine Through IP Admission 3 reduces steam hair as low temperature feedwater
The high parameter steam energy consumed in raw device 5；Steam is as heat source again using the heat from reheater 2 for steam generator 5, by adding
Low temperature feedwater of the heat from oxygen-eliminating device 7 produces high steam.
In the present embodiment, pressure matcher 6 is using the high steam driving from steam generator 5 in steam turbine
The extraction steam for factories of cylinder pressure 3, middle pressure steam needed for producing industrial heat user 9.This is because coal-fired thermal power performing low-load running of machine set
When Steam Turbine Through IP Admission 3 extraction steam for factories pressure lower than coal-fired thermal power unit declared working condition run when Steam Turbine Through IP Admission 3 work
Industry extraction pressure is unable to satisfy the demand of industrial heat user 9.
In the present embodiment, extraction steam for factories of the steam needed for industrial heat user 9 from Steam Turbine Through IP Admission 3, pressure
The middle pressure steam that orchestration 6 produces and the hot steam again after 5 desuperheat of steam generator.
The adjusting method that the present embodiment is related to is as follows:
When coal-fired thermal power unit heavy-duty service, at this time: opening No.1 valve 11 and hydraulic pressure butterfly valve 12, open and adjust No. six
Valve 17, the extraction steam for factories of Steam Turbine Through IP Admission 3 passes sequentially through extraction steam for factories pipe 27 and industrial steam supply pipe 30 is delivered to industrial heat
User 9；
When coal-fired thermal power performing low-load running of machine set, at this time: closing No. six valves 17, open hydraulic pressure butterfly valve 12, open and adjust
The valve 14, four of valve 13, three 16, No. seven valves 18 of the valve of valve 15, five of No.1 valve 11, two and No. eight valves
19, by heat, steam branch pipe 23 is delivered to steam generator 5 to steam to the heat from reheater 2 again again, heats from oxygen-eliminating device 7
Low temperature feedwater produces high steam, and steam passes sequentially through 26 He of the first steam pipe to the heat after 5 desuperheat of steam generator again
Industrial steam supply pipe 30 is delivered to industrial heat user 9, and the high steam that steam generator 5 generates enters pressure by high-pressure steam pipe 25
Power adaptation 6 drives the extraction steam for factories from Steam Turbine Through IP Admission 3 to produce middle pressure steam, the middle pressure that pressure matcher 6 generates
Steam passes sequentially through the second steam pipe 29 and industrial steam supply pipe 30 is delivered to industrial heat user 9.
In the carrying out practically method of the present embodiment, during coal-fired thermal power unit participates in power peak regulation, work as coal fuel heating
When motor group heavy-duty service, merely with the extraction steam for factories of Steam Turbine Through IP Admission 3 as steam needed for industrial heat user 9, when
When coal-fired thermal power performing low-load running of machine set, merely with the middle pressure steam of the production of pressure matcher 6 and by 5 desuperheat of steam generator
Hot steam again afterwards is as steam needed for industrial heat user 9.
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 (7)
1. a kind of steam surplus energy utility for coal-fired thermal power unit power peak regulation couples extraction for heat supply system, which is characterized in that
It includes: steam turbine high-pressure cylinder (1), reheater (2), Steam Turbine Through IP Admission (3), turbine low pressure cylinder (4), steam generator
(5), pressure matcher (6), oxygen-eliminating device (7), No. two feed pumps (8) and industrial heat user (9), the steam turbine high-pressure cylinder (1)
Steam drain connect with the air intake of reheater (2), the venthole of the reheater (2) passes through heat steam pipe (22) and steamer again
The air intake of machine intermediate pressure cylinder (3) connects, and is equipped with No.1 valve (11) in heat again steam pipe (22), presses in the steam turbine
The steam drain of cylinder (3) is connect by mesolow communicating pipe (21) with the air intake of turbine low pressure cylinder (4), and is connected in mesolow
It is equipped with hydraulic pressure butterfly valve (12) on pipe (21), the venthole of the reheater (2) also passes through heat steam branch pipe (23) and steam again
The high temperature air intake of generator (5) connects, and No. two valves (13) are equipped in heat again steam branch pipe (23), the steam hair
The low temperature venthole of raw device (5) is connect by the first steam pipe (26) with industrial steam supply pipe (30), and in the first steam pipe (26)
On No. five valves (16) are installed, the low temperature water inlet of the steam generator (5) passes through feed pipe (24) and oxygen-eliminating device (7)
Water outlet connection, and No. three valves (14) and No. two feed pumps are sequentially installed with along water flowing direction on feed pipe (24)
(8), the high pressure venthole of the steam generator (5) passes through the high-pressure admission of high-pressure steam pipe (25) and pressure matcher (6)
Mouth connection, and No. four valves (15) are installed on high-pressure steam pipe (25), the extraction steam for factories mouth of the Steam Turbine Through IP Admission (3)
It is connect by extraction steam for factories pipe (27) with industrial steam supply pipe (30), and No. six valves is installed on extraction steam for factories pipe (27)
(17), it is low with pressure matcher (6) also to pass through extraction steam for factories branch pipe (28) for the extraction steam for factories mouth of the Steam Turbine Through IP Admission (3)
It is pressed into steam ports connection, and No. seven valves (18) are installed on extraction steam for factories branch pipe (28), the middle pressure of the pressure matcher (6)
Venthole is connect by the second steam pipe (29) with industrial steam supply pipe (30), and No. eight valves are equipped on the second steam pipe (29)
The steam output end of door (19), the industry steam supply pipe (30) is connect with industrial heat user (9).
2. the steam surplus energy utility according to claim 1 for coal-fired thermal power unit power peak regulation couples extraction for heat supply system
System, which is characterized in that oxygen-eliminating device (7) of the low temperature feedwater needed for the steam generator (5) from coal-fired thermal power unit.
3. the steam surplus energy utility according to claim 2 for coal-fired thermal power unit power peak regulation couples extraction for heat supply system
System, which is characterized in that the steam generator (5) using the hot steam again from reheater (2) as heat source, by heat come
High steam is produced from the low temperature feedwater of oxygen-eliminating device (7).
4. the steam surplus energy utility according to claim 1 for coal-fired thermal power unit power peak regulation couples extraction for heat supply system
System, which is characterized in that the pressure matcher (6) comes from steam turbine using the high steam driving from steam generator (5)
The extraction steam for factories of intermediate pressure cylinder (3), middle pressure steam needed for production industrial heat user (9).
5. the steam surplus energy utility according to claim 1 for coal-fired thermal power unit power peak regulation couples extraction for heat supply system
System, which is characterized in that steam needed for the industrial heat user (9) comes from the extraction steam for factories of Steam Turbine Through IP Admission (3), pressure
The middle pressure steam of orchestration (6) production and the hot steam again after steam generator (5) desuperheat.
6. a kind of steam surplus energy utility coupling according to any one of claims 1 to 5 for coal-fired thermal power unit power peak regulation
Close the adjusting method of extraction for heat supply system, which is characterized in that its adjusting method is as follows:
When coal-fired thermal power unit heavy-duty service, at this time:
No.1 valve (11) and hydraulic pressure butterfly valve (12) are opened, opens and adjusts No. six valves (17), the work of Steam Turbine Through IP Admission (3)
Industry steam extraction passes sequentially through extraction steam for factories pipe (27) and industrial steam supply pipe (30) is delivered to industrial heat user (9)；
When coal-fired thermal power performing low-load running of machine set, at this time:
No. six valves (17) are closed, opens hydraulic pressure butterfly valve (12), opens and adjust No.1 valve (11), No. two valves (13), three
Number valve (14), No. four valves (15), No. five valves (16), No. seven valves (18) and No. eight valves (19) come from reheater (2)
Heat again steam by heat again steam branch pipe (23) be delivered to steam generator (5), heating come from oxygen-eliminating device (7) low temperature feedwater
High steam is produced, steam passes sequentially through the first steam pipe (26) and industry to the heat after steam generator (5) desuperheat again
Steam supply pipe (30) is delivered to industrial heat user (9), steam generator (5) generate high steam by high-pressure steam pipe (25) into
Enter pressure matcher (6), driving comes from the extraction steam for factories of Steam Turbine Through IP Admission (3) to produce middle pressure steam, pressure matcher (6)
The middle pressure steam of generation passes sequentially through the second steam pipe (29) and industrial steam supply pipe (30) is delivered to industrial heat user (9).
7. the steam surplus energy utility according to claim 6 for coal-fired thermal power unit power peak regulation couples extraction for heat supply system
The adjusting method of system, it is characterised in that:
During coal-fired thermal power unit participates in power peak regulation, when coal-fired thermal power unit heavy-duty service, merely with steam turbine
The extraction steam for factories of intermediate pressure cylinder (3) is as steam needed for industrial heat user (9), when coal-fired thermal power performing low-load running of machine set, only
Using the middle pressure steam of pressure matcher (6) production and the heat after steam generator (5) desuperheat, steam is warm as industry again
Steam needed for user (9).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631112A (en) * | 2019-09-11 | 2019-12-31 | 上海发电设备成套设计研究院有限责任公司 | Steam energy storage peak shaving system and method for heat supply unit |
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