CN108533340A - Cogeneration units depth peak regulation bypasses heat supply running device and operation method - Google Patents
Cogeneration units depth peak regulation bypasses heat supply running device and operation method Download PDFInfo
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- CN108533340A CN108533340A CN201810472897.6A CN201810472897A CN108533340A CN 108533340 A CN108533340 A CN 108533340A CN 201810472897 A CN201810472897 A CN 201810472897A CN 108533340 A CN108533340 A CN 108533340A
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- 238000000605 extraction Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 7
- 238000003303 reheating Methods 0.000 claims description 6
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- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
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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
- 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
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
- F24D11/004—Central heating systems using heat accumulated in storage masses water heating system with conventional supplementary heat source
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- 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]
Abstract
The present invention relates to a kind of cogeneration units depth peak regulation bypass heat supply running device and operation methods, include a holonomic system of the high, medium and low cylinder pressure of steam turbine, high pressure turbine by regulating valve, low voltage bypass regulating valve, high pressure cylinder steam discharge secondary ventilation regulating valve, low voltage bypass shut-off valve and other various regulating valve compositions.The present invention is adjusted by automatic or manual, is reached the mutual transition process of internal system electrically and thermally, is achieved the purpose that depth peak regulation.The beneficial effects of the invention are as follows：The flexibility that electrically and thermally load changes each other is improved, the ability of depth peak regulation has been reached, in the case where unit cold source energy is constant, by adjusting that can reach minimum electric load to rated capacity 17% hereinafter, flexible and changeable, peak regulation range is big, economic and reliable.
Description
Technical field：
The invention belongs to the cogeneration units heating energy-saving technical fields of electric system, more particularly to cogeneration units
Depth peak regulation bypasses heat supply running device and operation method.
Background technology：
With the development of electric power, China's installed capacity is increasing, and the power generation peak-valley difference of grid requirements is also increasing, fire
Power power plant cogeneration units in winter heat supply when, with the increase of energy saving dynamics, heat consumption is got over after thermal power plant unit reducing energy consumption
Come lower, but the peak modulation capacity of unit is lower and lower, and the supplying thermal condition of unit operation and the electric load of grid requirements form lance
Shield.It is mainly manifested in following two problems：
For a for the most effective high back pressure circulating water heating technology of cogeneration of heat and power, heat consumption is very low, but supplies to hanker necessary
Electricity determining by heat, i.e.,：The how much corresponding electric load of thermic load is exactly how many, can not be adjusted.Limit peak regulation work(of the power grid to unit
Energy.With the popularization of this technology, such unit is more and more, and the peak regulation means of power grid are further restricted, if electric
Load effectively cannot be controlled and be adjusted, and security risk is brought to the safe operation of power grid and unit.
Although the extraction steam unit of b Winter heat supplies may be implemented limited peak regulation, but when the lower electric load of grid requirements,
Many unit pump gas ablities decline, or even are unable to extraction for heat supply completely, affect the heating of winter heat user, also limit power grid
Peak regulating function.With the continuous development of people's livelihood engineering, this restriction is increasing.In this case, the operation side of unit
The serious safety for affecting power grid of formula, when power grid does not need electricity, unit is still to largely send out to meet heating demand
Electricity.For the safety of power grid and unit, power grid has to abandon a large amount of wind-force
The clean energy resource of power generation and solar power generation is formed big to meet the operational safety requirement of thermal power generation unit
Amount burns the difficult situation that coal power generation abandons clean energy resource again, causes the energy waste and environmental pollution of entire society.
Depth peak regulation how is solved thus and can meet the contradiction of heating demand again, is become electric system and is badly in need of the skill solved
Art problem.
Invention content：
The present invention provides a kind of thermoelectricity to make up the deficiencies in the prior art and technical barrier described in background technology
Coproduction unit depth peak regulation bypasses heat supply running device and operation method, is realizing that unit net coal consumption rate is constant and is ensureing that unit is pacified
On the basis of complete, electric load can be greatly lowered, improve thermic load, can also improve electric load, reduce thermic load, increase unit
The flexibility of depth peak regulation.
The present invention is achieved through the following technical solutions：A kind of cogeneration units depth peak regulation bypass heat supply fortune is provided
Luggage is set and operation method, the running gear, including newly increase high pressure cylinder steam discharge secondary ventilation regulating valve 5, high pressure cylinder row
Vapour secondary ventilation non-return valve 6, low voltage bypass shut-off valve 10, mesolow cylinder connection extraction check valve 12 are connected to shutdown with mesolow cylinder
Valve 13 is connected each other between them, and with the low voltage bypass regulating valve 7, high pressure turbine by regulating valve 2, boiler 1, high in original system
Cylinder pressure 19, intermediate pressure cylinder 18, low pressure (LP) cylinder 15 and condenser 17 connect, and constitute a special system with new function；Its feature
It is that in equipment operation the safe operation of equipment can be protected, and can realizes target to be achieved.It is able to by following connection schemes
It realizes：The main-steam outlet of the boiler 1 is separately connected the entrance of high pressure turbine by regulating valve 2 and high pressure cylinder regulating valve 3, described
The outlet of high pressure turbine by regulating valve 2 connects boiler cold section of entrance of 1 reheating, and the outlet of the high pressure cylinder regulating valve 3 connects high pressure cylinder
19 entrance；The outlet of the high pressure cylinder 19 is separately connected the entrance of high pressure cylinder steam discharge secondary ventilation regulating valve 5, high pressure cylinder steam discharge
20 entrance of non-return valve；It is inverse that the outlet of the high pressure cylinder steam discharge secondary ventilation regulating valve 5 is sequentially connected high pressure cylinder steam discharge secondary ventilation
Only 8 entrance of 6 entrance of valve and heat supply shut-off valve；The reheating hot arc steam (vapor) outlet of the boiler 1 is separately connected 4 He of intermediate pressure cylinder regulating valve
The outlet of the entrance of low voltage bypass regulating valve 7, medium pressure cylinder regulating valve 4 connects 18 entrance of intermediate pressure cylinder, the low voltage bypass tune
The outlet of section valve 7 is separately connected heat supply shut-off valve 8, the entrance of low voltage bypass shut-off valve 10 is connected to extraction check valve with mesolow cylinder
12 outlet；Outlet mesolow cylinder connection 13 entrance of shut-off valve of medium pressure cylinder 18 is connected to regulating valve 14 with mesolow cylinder
Entrance；The outlet of the low voltage bypass shut-off valve 10 connects 17 entrance of condenser；The mesolow cylinder connection shut-off valve 13 goes out
Mouth is connected to mesolow cylinder connection 12 entrance of extraction check valve, and the outlet connection of the mesolow cylinder connection extraction check valve 12 supplies
8 entrance of Thermal shutdown valve；The outlet of the heat supply shut-off valve 8 connects external heat supply pipeline；The mesolow cylinder is connected to regulating valve 14
Outlet connection low pressure (LP) cylinder 15 entrance.
Further, the outlet of high pressure cylinder steam discharge secondary ventilation non-return valve 6 is connected to heat supply shut-off valve 8, low voltage bypass
The entrance of shut-off valve 10 is connected to the outlet of extraction check valve 12, low voltage bypass regulating valve 7 with mesolow cylinder.
Further, the outlet of the mesolow cylinder connection extraction check valve 12 is connected to low voltage bypass shut-off valve 10, supplies
The outlet of 8 entrance of Thermal shutdown valve and high pressure cylinder steam discharge secondary ventilation non-return valve 6, low voltage bypass regulating valve 7.
Further, mesolow cylinder connection 13 entrance of shut-off valve be connected to mesolow cylinder connection 14 entrance of regulating valve and
The outlet of intermediate pressure cylinder 18.
Further, increase an attemperator 16 between low voltage bypass shut-off valve (10) and condenser 17.
Further, the entrance of low voltage bypass shut-off valve 10 and 8 entrance of heat supply shut-off valve and high pressure cylinder steam discharge secondary ventilation
The outlet connection of non-return valve 6, low voltage bypass regulating valve 7, mesolow cylinder connection extraction check valve 12.
The operation method of the cogeneration units depth peak regulation bypass heat supply running device, operates in accordance with the following methods：
When needing to reduce electric load：Cannot be reduced again in boiler load, by reduction into high pressure cylinder 19, in
The quantity of steam of cylinder pressure 18 and low pressure (LP) cylinder 15 achievees the purpose that reduce electric load；Boiler generate extra steam by high pressure by
Road regulating valve 2,7 pressure and temperature reducing direct heating of low voltage bypass regulating valve, reach reduction electric load, increase the purpose of thermic load；
When needing to increase electric load：By increase into high pressure cylinder 19, the quantity of steam of intermediate pressure cylinder 18 and low pressure (LP) cylinder 15, increase
Power up load；If quantity of steam is inadequate, high pressure turbine by regulating valve 2 and low voltage bypass regulating valve 7 can be gradually turned down, until all
It closes, then improves boiler load, continue growing electric load.Low voltage bypass shut-off valve 10 is closed always, until supplying
It is opened after the hot phase.The injury to unit directly can be caused by aforesaid operations, in order to avoid injury, passes through above-mentioned connection type
High pressure cylinder steam discharge secondary ventilation regulating valve 5, high pressure cylinder steam discharge secondary ventilation non-return valve 6, low voltage bypass shutdown are adjusted with correct
Valve 10, mesolow cylinder are connected to extraction check valve 12, and mesolow cylinder is connected to shut-off valve 13, can be to avoid this injury.
In the operation of lifting load, in order to avoid the injury to unit, need to adjust each valve and various operations ginseng
Number.When operating each operating parameter, under auto state, automatic monitoring and adjust automatically；Under manual mode, by skill
The operating parameter control specification that art personnel provide is operated and is adjusted.
The present invention technical characteristic be：When load down：It is constant in boiler load, by reduction enter high pressure cylinder and
The throttle flow of intermediate pressure cylinder, and control low pressure (LP) cylinder throttle flow reduce acting, extra heat, pass through high pressure and low voltage bypass regulating valve
Initial station heat supply is sent to after pressure and temperature reducing；
Increase when load up and enter high, intermediate pressure cylinder throttle flow, reduces high pressure and low voltage bypass regulating valve quantity of steam, until
High pressure and low voltage bypass regulating valve Close All, while boiler load can also change, and the peak modulation capacity of unit is made to greatly improve,
Reach the ability of depth peak regulation.
Feature of present invention is embodied as：When load down, by turning down high pressure cylinder regulating valve, opens big high pressure turbine by and adjust
Valve makes boiler load remain unchanged, and adjusts high pressure cylinder steam discharge secondary ventilation valve, keeps high pressure cylinder steam discharge parameter in defined range
It is interior.Intermediate pressure cylinder regulating valve is adjusted, reduces intermediate pressure cylinder throttle flow, makes unit thrust variation in allowed limits.By high pressure
Excess steam is sent into heat supply initial station by for thermal conditioning by road regulating valve and the control of low voltage bypass regulating valve by pressure and temperature reducing
Valve adjusts the heating load into initial station and completes in internal system by the process that electrotransformation is heat.Otherwise operation can complete by
Thermal transition is the process of electricity.
The beneficial effects of the invention are as follows：The method that may be implemented not needing boiler combustion adjustment by above system is realized
The purpose of electric load is adjusted, minimum load can reach 17% or less rated load.Pass through therrmodynamic system internal adjustment and behaviour
Make, so that it may realize internal system electrotransformation at heat or thermal transition at electric process.This process is from maximum load to minimum load
It is flexibly adjustable, if the method for recycling boiler combustion adjustment, can have the function that the further depth peak regulation of unit.It can be with
When avoiding power grid from not needing electricity, due to the limitation of boiler load, there is electric load and drop the passive situation that do not get off.It avoids putting
The clean energy resourcies such as wind-power electricity generation and solar power generation are abandoned, and energy waste phenomenon is caused to occur.
Description of the drawings：
Fig. 1 is the structural diagram of the present invention；
In figure：1, boiler, 2, high pressure turbine by regulating valve, 3, high pressure cylinder regulating valve, 4, intermediate pressure cylinder regulating valve, 5, high pressure cylinder row
Vapour secondary ventilation regulating valve, 6, high pressure cylinder steam discharge secondary ventilation non-return valve, 7, low voltage bypass regulating valve, 8, heat supply shut-off valve, 9,
For heat regulating valve, 10, low voltage bypass shut-off valve, 11, heat supply non-return valve, 12, mesolow cylinder be connected to extraction check valve, 13, in it is low
Cylinder pressure is connected to shut-off valve, 14, mesolow cylinder be connected to regulating valve, 15, low pressure (LP) cylinder, 16, attemperator, 17, condenser, 18, middle pressure
Cylinder, 19, high pressure cylinder, 20, high pressure cylinder steam discharge non-return valve.
Specific implementation mode：
To illustrate the invention the characteristics of, the invention will be further described with reference to the accompanying drawings and examples.
Query graph 1, a kind of cogeneration units depth peak regulation bypass heat supply running device and operation method, the operation fill
It sets, including boiler 1, high pressure turbine by regulating valve 2, high pressure cylinder regulating valve 3, intermediate pressure cylinder regulating valve 4, high pressure cylinder steam discharge secondary ventilation tune
Save valve 5, high pressure cylinder steam discharge secondary ventilation non-return valve 6, low voltage bypass regulating valve 7, heat supply shut-off valve 8, for heat regulating valve 9, low pressure
Bypass shut-off valve 10, heat supply non-return valve 11, mesolow cylinder be connected to extraction check valve 12, mesolow cylinder be connected to shut-off valve 13, in it is low
Cylinder pressure is connected to regulating valve 14, low pressure (LP) cylinder 15, attemperator 16, condenser 17, intermediate pressure cylinder 18, high pressure cylinder 19, high pressure cylinder steam discharge check
Valve 20.
The main-steam outlet of the boiler 1 is separately connected the entrance of high pressure turbine by regulating valve 2 and high pressure cylinder regulating valve 3, institute
Outlet connection boiler cold section of entrance of 1 reheating of high pressure turbine by regulating valve 2 is stated, the outlet of the high pressure cylinder regulating valve 3 connects high pressure
The entrance of cylinder 19；The outlet of the high pressure cylinder 19 is separately connected the entrance of high pressure cylinder steam discharge secondary ventilation regulating valve 5, high pressure cylinder
20 entrance of steam discharge non-return valve；It is logical that the outlet of the high pressure cylinder steam discharge secondary ventilation regulating valve 5 is sequentially connected high pressure cylinder steam discharge auxiliary
8 entrance of 6 entrance of wind non-return valve and heat supply shut-off valve；The reheating hot arc steam (vapor) outlet of the boiler 1 is separately connected intermediate pressure cylinder adjusting
The outlet of the entrance of valve 4 and low voltage bypass regulating valve 7, medium pressure cylinder regulating valve 4 connects 18 entrance of intermediate pressure cylinder, the low pressure
The outlet of bypass valve 7 is separately connected heat supply shut-off valve 8, the entrance of low voltage bypass shut-off valve 10 is connected to steam extraction with mesolow cylinder
The outlet of non-return valve 12；13 entrance of outlet shut-off valve of medium pressure cylinder 18 is connected to entering for regulating valve 14 with mesolow cylinder
Mouthful；The outlet of the low voltage bypass auxiliary shut-off valve 10 connects 17 entrance of condenser；The mesolow cylinder connection shut-off valve 13 goes out
Mouth is connected to mesolow cylinder connection 12 entrance of extraction check valve, and the outlet connection of the mesolow cylinder connection extraction check valve 12 supplies
8 entrance of Thermal shutdown valve；The outlet of the heat supply shut-off valve 8 connects external heat supply pipeline；The mesolow cylinder is connected to regulating valve 14
Outlet connection low pressure (LP) cylinder 15 entrance.The outlet of the low pressure (LP) cylinder 15 is separately connected 17 entrance of condenser.
The outlet of medium pressure cylinder 18 is also connected to regulating valve 14 by mesolow cylinder with the entrance of low pressure (LP) cylinder 15 and connect；It is described
The entrance of mesolow cylinder connection shut-off valve 13 is connected on the entrance of mesolow cylinder connection regulating valve 14.
The heat supply shut-off valve 8 is also sequentially installed with in the connection line of external heat supply pipeline for heat regulating valve 9 and confession
Hot non-return valve 11.
The outlet of the low voltage bypass shut-off valve 10 is also equipped with attemperator with the connecting line of 17 entrance of condenser
16。
The operation method of the cogeneration units depth peak regulation bypass heat supply running device, operates in accordance with the following methods：
When needing to reduce electric load：Cannot be reduced again in boiler load, by reduction into high pressure cylinder 19, in
The quantity of steam of cylinder pressure 18 and low pressure (LP) cylinder 15 achievees the purpose that reduce electric load；Boiler generate extra steam by high pressure by
Road regulating valve 2,7 pressure and temperature reducing direct heating of low voltage bypass regulating valve, reach reduction electric load, increase the purpose of thermic load；
When needing to increase electric load：By increase into high pressure cylinder 19, the quantity of steam of intermediate pressure cylinder 18 and low pressure (LP) cylinder 15, increase
Power up load；If quantity of steam is inadequate, high pressure turbine by regulating valve 2 and low voltage bypass regulating valve 7 can be gradually turned down.Until all
It closes, then improves boiler load, continue growing electric load.Low voltage bypass shut-off valve 10 is closed always.
It in the operation of lifting load, needs to adjust each valve and various operating parameters, operation ginseng each in operation
Number, under auto state, automatic monitoring, and be automatically brought into operation；Under manual mode, the operating parameter that is provided by technical staff
Control specification is operated.It is no that it will cause the damages of equipment.
The advantageous effect of the embodiment of the present invention is：By flexibly adjusting internal electrically and thermally allocation proportion, improve electricity and
The flexibility that thermic load changes each other has reached the ability of depth peak regulation, in the case where unit cold source energy is constant, passes through tune
It is whole to reach high electric load and minimum thermic load, minimum electric load (the 17% or less of rated load) can also be reached
With highest thermic load, flexible and changeable, peak regulation range is big, economic and reliable.
Above example and attached drawing are only used to illustrate the technical scheme of the present invention, and are not limitation of the present invention, reference
Preferred embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, the art
Those of ordinary skill in the essential scope of the present invention variations, modifications, additions or substitutions made without departure from the present invention
Objective, should also belong to the present invention claims.
Claims (7)
1. a kind of cogeneration units depth peak regulation bypasses heat supply running device, it is characterised in that：Including the high pressure cylinder newly increased
Steam discharge secondary ventilation regulating valve (5), high pressure cylinder steam discharge secondary ventilation non-return valve (6), low voltage bypass shut-off valve (10), mesolow cylinder
Connection extraction check valve (12) is connected to shut-off valve (13) with mesolow cylinder, connects each other between them, and low in original system
Press bypass valve (7), high pressure turbine by regulating valve (2), boiler (1), high pressure cylinder (19), intermediate pressure cylinder (18), low pressure (LP) cylinder (15) and
Condenser (17) connects, and constitutes a special system with new function；The main-steam outlet of the boiler (1) is separately connected
The outlet of the entrance of high pressure turbine by regulating valve (2) and high pressure cylinder regulating valve (3), the high pressure turbine by regulating valve (2) connects boiler
(1) cold section of entrance of reheating, the entrance of the outlet connection high pressure cylinder (19) of the high pressure cylinder regulating valve (3)；The high pressure cylinder (19)
Outlet be separately connected the entrance of high pressure cylinder steam discharge secondary ventilation regulating valve (5), high pressure cylinder steam discharge non-return valve (20) entrance；It is described
The outlet of high pressure cylinder steam discharge secondary ventilation regulating valve (5) is sequentially connected high pressure cylinder steam discharge secondary ventilation non-return valve (6) entrance and confession
Thermal shutdown valve (8) entrance；The reheating hot arc steam (vapor) outlet of the boiler (1) is separately connected by intermediate pressure cylinder regulating valve (4) and low pressure
The outlet of the entrance of road regulating valve (7), medium pressure cylinder regulating valve (4) connects intermediate pressure cylinder (18) entrance, the low voltage bypass tune
The outlet of section valve (7) is separately connected heat supply shut-off valve (8), the entrance of low voltage bypass shut-off valve (10) is connected to steam extraction with mesolow cylinder
The outlet of non-return valve (12)；Outlet mesolow cylinder connection shut-off valve (13) entrance and mesolow cylinder of medium pressure cylinder (18)
It is connected to the entrance of regulating valve (14)；The outlet of the low voltage bypass shut-off valve (10) connects condenser (17) entrance；It is low in described
Cylinder pressure connection shut-off valve (13), which exports, is connected to mesolow cylinder connection extraction check valve (12) entrance, and the mesolow cylinder connection is taken out
The outlet of vapour non-return valve (12) connects heat supply shut-off valve (8) entrance；The outlet of the heat supply shut-off valve (8) connects external heating tube
Line；The entrance of the outlet connection low pressure (LP) cylinder (15) of the mesolow cylinder connection regulating valve (14).
2. cogeneration units depth peak regulation according to claim 1 bypasses heat supply running device, it is characterised in that：It is described
High pressure cylinder steam discharge secondary ventilation non-return valve (6) outlet be connected to heat supply shut-off valve (8), low voltage bypass shut-off valve (10) entrance and
Mesolow cylinder is connected to extraction check valve (12), low voltage bypass regulating valve (7) outlet.
3. cogeneration units depth peak regulation according to claim 1 bypasses heat supply running device, it is characterised in that：It is described
Mesolow cylinder connection extraction check valve (12) outlet be connected to low voltage bypass shut-off valve (10), heat supply shut-off valve (8) entrance and
The outlet of high pressure cylinder steam discharge secondary ventilation non-return valve (6), low voltage bypass regulating valve (7).
4. cogeneration units depth peak regulation according to claim 1 bypasses heat supply running device, it is characterised in that：It is described
Mesolow cylinder connection shut-off valve (13) entrance is connected to the outlet of mesolow cylinder connection 14 entrance of regulating valve and intermediate pressure cylinder (18).
5. cogeneration units depth peak regulation according to claim 1 bypasses heat supply running device, it is characterised in that：Low pressure
Bypass the entrance and heat supply shut-off valve (8) entrance and high pressure cylinder steam discharge secondary ventilation non-return valve (6), low voltage bypass of shut-off valve (10)
The outlet connection of regulating valve (7), mesolow cylinder connection extraction check valve (12).
6. a kind of cogeneration units depth peak regulation bypass heat supply running dress according to any one of claims 1 to 5
The operation method set, it is characterised in that：It operates in accordance with the following methods：
When needing to reduce electric load：It cannot be reduced again in boiler load, high pressure cylinder (19), middle pressure entered by reduction
The quantity of steam of cylinder (18) and low pressure (LP) cylinder (15) achievees the purpose that reduce electric load；The extra steam that boiler generates passes through high pressure
Bypass valve (2), low voltage bypass regulating valve (7) pressure and temperature reducing direct heating, reach reduction electric load, increase the mesh of thermic load
's；
When needing to increase electric load：Enter the quantity of steam of high pressure cylinder (19), intermediate pressure cylinder (18) and low pressure (LP) cylinder (15) by increase,
Increase electric load；If quantity of steam is inadequate, it can gradually turn down high pressure turbine by regulating valve (2) and low voltage bypass regulating valve (7) is straight
To Close All, and low voltage bypass shut-off valve (10) is closed always, then improves boiler load, and it is negative to continue growing electricity
Lotus.
7. cogeneration units depth peaking operation method according to claim 5, it is characterised in that：In lifting load
In operation, need to adjust each valve and various operating parameters.When operating each operating parameter, under auto state, system
Automatic monitoring and adjust automatically；Under manual mode, the operating parameter control specification provided by technical staff is operated and is adjusted
It is whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472897.6A CN108533340A (en) | 2018-05-09 | 2018-05-09 | Cogeneration units depth peak regulation bypasses heat supply running device and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472897.6A CN108533340A (en) | 2018-05-09 | 2018-05-09 | Cogeneration units depth peak regulation bypasses heat supply running device and operation method |
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| CN108533340A true CN108533340A (en) | 2018-09-14 |
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| CN201810472897.6A Pending CN108533340A (en) | 2018-05-09 | 2018-05-09 | Cogeneration units depth peak regulation bypasses heat supply running device and operation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373347A (en) * | 2018-09-21 | 2019-02-22 | 国网辽宁省电力有限公司电力科学研究院 | A kind of coal-supplying amount optimal control method of unit bypass heat supply |
| CN109442368A (en) * | 2018-09-21 | 2019-03-08 | 国网辽宁省电力有限公司电力科学研究院 | A kind of bypath system integrated control method promoting thermal power plant unit regulating power |
| CN109556161A (en) * | 2018-10-07 | 2019-04-02 | 联合瑞升（北京）科技有限公司 | A kind of multimachine interconnection exhaust steam residual heat recycling system |
| CN109915221A (en) * | 2019-01-31 | 2019-06-21 | 西安西热节能技术有限公司 | A kind of internal bypass steamer dragging system and method applied to cogeneration units |
| CN113027550A (en) * | 2021-03-22 | 2021-06-25 | 西安热工研究院有限公司 | High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method |
| CN113914948A (en) * | 2021-10-15 | 2022-01-11 | 国能龙源蓝天节能技术有限公司上海分公司 | System and method for realizing deep peak shaving of thermoelectric unit by using bypass heat supply |
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2018
- 2018-05-09 CN CN201810472897.6A patent/CN108533340A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373347A (en) * | 2018-09-21 | 2019-02-22 | 国网辽宁省电力有限公司电力科学研究院 | A kind of coal-supplying amount optimal control method of unit bypass heat supply |
| CN109442368A (en) * | 2018-09-21 | 2019-03-08 | 国网辽宁省电力有限公司电力科学研究院 | A kind of bypath system integrated control method promoting thermal power plant unit regulating power |
| CN109556161A (en) * | 2018-10-07 | 2019-04-02 | 联合瑞升（北京）科技有限公司 | A kind of multimachine interconnection exhaust steam residual heat recycling system |
| CN109915221A (en) * | 2019-01-31 | 2019-06-21 | 西安西热节能技术有限公司 | A kind of internal bypass steamer dragging system and method applied to cogeneration units |
| CN113027550A (en) * | 2021-03-22 | 2021-06-25 | 西安热工研究院有限公司 | High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method |
| CN113027550B (en) * | 2021-03-22 | 2022-08-30 | 西安热工研究院有限公司 | High-low voltage bypass system meeting peak regulation requirement and dynamic optimization control method |
| CN113914948A (en) * | 2021-10-15 | 2022-01-11 | 国能龙源蓝天节能技术有限公司上海分公司 | System and method for realizing deep peak shaving of thermoelectric unit by using bypass heat supply |
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