CN205400830U - 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system - Google Patents
300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system Download PDFInfo
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- CN205400830U CN205400830U CN201620169264.4U CN201620169264U CN205400830U CN 205400830 U CN205400830 U CN 205400830U CN 201620169264 U CN201620169264 U CN 201620169264U CN 205400830 U CN205400830 U CN 205400830U
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- cylinder
- pressure cylinder
- fire coal
- heating
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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]
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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
- 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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Abstract
The utility model discloses a 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system, including the steam turbine, the steam turbine includes high pressure cylinder, intermediate pressure cylinder and the low pressure jar that connects gradually, low pressure jar connection generator, connect middle and low voltage jar steam UNICOM valve between intermediate pressure cylinder and the low pressure jar, heating network heater, former heating network heater and the industry steam bleeding system who increases newly is connected to the intermediate pressure cylinder, and the heating network heater who increases newly, former heating network heater connect a heat supply network outlet pipe, and the condenser is connected to the low pressure jar. The beneficial effects of the utility model are that: through the admission of restriction steam turbine low pressure jar, reduce the electric power acting, increase the heating flow that draws gas, thereby improve thermoelectricly than improving heating heating capacity.
Description
Technical field
This utility model belongs to cogeneration system technical field, is specifically related to a kind of improve cogeneration units heat capacity energy-conservation system.
Background technology
At present, thermal power plant cogeneration is always up solving North City heating most one of energy-saving and environmental protection, efficiently feasible mode.In recent years, along with the development of national economy, the raising of universal, the environmental requirement of central heating, large-scale thermal power plant cogeneration unit has been built up in a lot of cities, the north in succession, wherein with 300MW grade unit be maximum.But due to the current electricity serious surplus that supply exceed demand, environmental requirement central heating and city size expand the situation (being probably permanent) that the heat demand caused is uprushed, and solve heating problem almost without possibility by building large-scale Hazards in Power Plant coproduction unit again.Therefore, steam power plant is adapt to present form by Transformation of Unit carries out excavation heat supply potentiality, is also the optimum selection of Future Trend.
Utility model content
For solving the defect that prior art exists, the purpose of this utility model is to provide a kind of 300MW grade fire coal that can improve heat capacity energy-conserving and environment-protective and takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system.
The technical solution of the utility model is: 300MW grade fire coal is taken out solidifying cogeneration units restriction steam discharge and improved for ratio of specific heat system, including steam turbine, described steam turbine includes the high pressure cylinder, intermediate pressure cylinder and the low pressure (LP) cylinder that are sequentially connected with, low pressure (LP) cylinder connects electromotor, mesolow cylinder steam coupling cock is connected between medium pressure cylinder and low pressure (LP) cylinder, intermediate pressure cylinder connects the heat exchangers for district heating, former heat exchangers for district heating and the extraction steam for factories system that newly increase, the heat exchangers for district heating newly increased, former heat exchangers for district heating connect a heat supply network outlet pipe, and low pressure (LP) cylinder connects condenser.
Described condenser connects condenser water replenishing pipeline.
Pumps for hot water supply net is positioned on the pipeline of a described heat supply network.
Described high pressure cylinder connects superheater.
Described high pressure cylinder connects intermediate pressure cylinder by reheater.
Medium pressure cylinder is connected to the heat exchangers for district heating that newly increases and former heat exchangers for district heating by heating bleed steam pipework.
A described heat supply network connects heat supply network water pipe in factory.
The beneficial effects of the utility model are: fire coal is taken out solidifying cogeneration units by restricting turbine low pressure cylinder enter vapour increase heating draw gas, improve hotspot stress thus improving heating ability.Native system is particularly well-suited to 300MW grade fire coal and takes out solidifying heating or have the cogeneration units of industrial steam load or the power plant of similar unit simultaneously.During by calculating unit, restriction low pressure (LP) cylinder flow can increase Heating Load 33.9MW, increases heating area 67.7 ten thousand m2；If heating steam load have 65 tons/time surplus, this surplus is completely used for heating, can increase 38.8MW, increases area of heat-supply service 77.5 ten thousand m2.Native system generally increases Heating Load 72.7MW, increases area of heat-supply service 145.2 ten thousand m2, namely increasing area of heat-supply service is 1/7 to the 1/3 of specified heat capacity.Adopt this therrmodynamic system, although because low pressure (LP) cylinder throttle flow reduces corresponding electric power acting (generated energy) that reduces, but cold source energy reduces, and heating improves so that generatine set heat efficiency improves, and gross coal consumption rate reduces, and total economic benefit is improved.For certain power plant, by calculating, it is possible to decrease gross coal consumption rate 5～7g/kW h；Single unit can create income 943.4 ten thousand yuan, two unit many creation incomes of full factory 1886.8 ten thousand yuan more.
Accompanying drawing explanation
This utility model has accompanying drawing 1 width.
Fig. 1 is structure principle chart of the present utility model.
In figure, accompanying drawing labelling is as follows: 1, high pressure cylinder, and 2, intermediate pressure cylinder, 3, low pressure (LP) cylinder, 4, electromotor, 5, mesolow cylinder steam coupling cock, 6, the heat exchangers for district heating newly increased, 7, condenser, 8, condenser water replenishing pipeline, 9, condenser water replenishing valve, 10, a heat supply network, 11, Make-up Water for Heating System in factory, 12, pumps for hot water supply net, 13, superheater, 14, reheater, 15, extraction steam for factories system, 16, former heat exchangers for district heating.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, this utility model is described further:
300MW grade fire coal is taken out solidifying cogeneration units restriction steam discharge and is improved for ratio of specific heat system, including steam turbine, described steam turbine includes the high pressure cylinder 1, intermediate pressure cylinder 2 and the low pressure (LP) cylinder 3 that are sequentially connected with, low pressure (LP) cylinder 3 connects electromotor 4, mesolow cylinder steam coupling cock 5 is connected between medium pressure cylinder 2 and low pressure (LP) cylinder 3, intermediate pressure cylinder 2 connects the heat exchangers for district heating 6, former heat exchangers for district heating 16 and the extraction steam for factories system 15 that newly increase, the heat exchangers for district heating 6, the former heat exchangers for district heating 16 that newly increase connect heat supply network 10 outlet pipe, and low pressure (LP) cylinder 3 connects condenser 7.
Described condenser 7 connects condenser water replenishing pipeline 8.
Pumps for hot water supply net 12 is positioned on the pipeline of a described heat supply network 10.
Described high pressure cylinder 1 connects superheater 13.
Described high pressure cylinder 1 connects intermediate pressure cylinder 2 by reheater 14.
Medium pressure cylinder 2 is connected to the heat exchangers for district heating 6 and the former heat exchangers for district heating 16 that newly increase by heating bleed steam pipework.
A described heat supply network 10 connects heat supply network water pipe 11 in factory.
300MW grade fire coal is taken out solidifying cogeneration units restriction steam discharge and is improved the method for ratio of specific heat, low pressure (LP) cylinder 3 throttle flow is limited by adjusting mesolow cylinder vapor communication mesolow cylinder steam coupling cock 5 at Heating Period, to the minimum vapour amount that ensure that low pressure (LP) cylinder 3 Heating Period safe operation, (by turbine making, producer provides in minimizing, different because of type and unit capacity), reduce electric power acting, increase heating extraction flow, and then improve heat capacity by increasing hotspot stress.
If extraction steam for factories has surplus, then balance acting is down to heating and draws gas and can increase heat supply after parameter and draw gas, improve heat capacity.
Native system extraction steam for factories amount diminishes compared with original system, and heating is drawn gas and become big compared with original system, and low pressure (LP) cylinder 3 air inflow diminishes compared with original system.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.
Claims (7)
1.300MW grade fire coal is taken out solidifying cogeneration units restriction steam discharge and is improved for ratio of specific heat system, including steam turbine, it is characterized in that, described steam turbine includes the high pressure cylinder (1) being sequentially connected with, intermediate pressure cylinder (2) and low pressure (LP) cylinder (3), low pressure (LP) cylinder (3) connects electromotor (4), mesolow cylinder steam coupling cock (5) is connected between medium pressure cylinder (2) and low pressure (LP) cylinder (3), intermediate pressure cylinder (2) connects the heat exchangers for district heating (6) newly increased, former heat exchangers for district heating (16) and extraction steam for factories system (15), the heat exchangers for district heating (6) newly increased, former heat exchangers for district heating (16) connects heat supply network (10) outlet pipe, low pressure (LP) cylinder (3) connects condenser (7).
2. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterised in that described condenser (7) connects condenser water replenishing pipeline (8).
3. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterised in that pumps for hot water supply net (12) is positioned on the pipeline of a described heat supply network (10).
4. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterised in that described high pressure cylinder (1) connects superheater (13).
5. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterised in that described high pressure cylinder (1) connects intermediate pressure cylinder (2) by reheater (14).
6. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterized in that, medium pressure cylinder (2) is connected to the heat exchangers for district heating (6) and the former heat exchangers for district heating (16) that newly increase by heating bleed steam pipework.
7. 300MW grade fire coal according to claim 1 takes out the restriction steam discharge raising of solidifying cogeneration units for ratio of specific heat system, it is characterised in that a described heat supply network (10) connects heat supply network water pipe (11) in factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620169264.4U CN205400830U (en) | 2016-03-07 | 2016-03-07 | 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620169264.4U CN205400830U (en) | 2016-03-07 | 2016-03-07 | 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205400830U true CN205400830U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620169264.4U Expired - Fee Related CN205400830U (en) | 2016-03-07 | 2016-03-07 | 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system |
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| CN (1) | CN205400830U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111507011A (en) * | 2020-04-26 | 2020-08-07 | 国电南京电力试验研究有限公司 | Method for correcting influence quantity of heat supply extraction steam on sliding pressure operation of steam turbine |
| CN112302747A (en) * | 2020-09-27 | 2021-02-02 | 国家电投集团科学技术研究院有限公司 | Cogeneration system and working method thereof |
| CN114941554A (en) * | 2022-05-09 | 2022-08-26 | 中国船舶重工集团公司第七0三研究所 | Energy cascade system for cogeneration of heating steam and utilization method |
-
2016
- 2016-03-07 CN CN201620169264.4U patent/CN205400830U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111507011A (en) * | 2020-04-26 | 2020-08-07 | 国电南京电力试验研究有限公司 | Method for correcting influence quantity of heat supply extraction steam on sliding pressure operation of steam turbine |
| CN112302747A (en) * | 2020-09-27 | 2021-02-02 | 国家电投集团科学技术研究院有限公司 | Cogeneration system and working method thereof |
| CN112302747B (en) * | 2020-09-27 | 2023-03-14 | 国家电投集团科学技术研究院有限公司 | Cogeneration system and working method thereof |
| CN114941554A (en) * | 2022-05-09 | 2022-08-26 | 中国船舶重工集团公司第七0三研究所 | Energy cascade system for cogeneration of heating steam and utilization method |
| CN114941554B (en) * | 2022-05-09 | 2023-09-08 | 中国船舶重工集团公司第七0三研究所 | Cascade system for heating steam to carry out heat and electricity combined energy and utilization method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20180307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |