CN207990589U - A kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system - Google Patents
A kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system Download PDFInfo
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- CN207990589U CN207990589U CN201721539681.4U CN201721539681U CN207990589U CN 207990589 U CN207990589 U CN 207990589U CN 201721539681 U CN201721539681 U CN 201721539681U CN 207990589 U CN207990589 U CN 207990589U
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Abstract
The utility model discloses a kind of wide loads of new vapour source of fired power generating unit heater to put forward effect and out of stock technological system comprising boiler, boiler is interior to be equipped with boiler superheater, economizer and SCR denitration system, further includes：The air intake of jet type heat pump, jet type heat pump passes through piping connection boiler superheater and extracted steam from turbine Vapor outlet respectively；High-pressure heater, the air intake of high-pressure heater is by the venthole of piping connection jet type heat pump, and for the water inlet of high-pressure heater by piping connection oxygen-eliminating device, the water outlet of high-pressure heater passes through piping connection economizer.The utility model solves that partial load condition feed temperature is relatively low cannot meet contradiction of the Denitration in Boiler to flue-gas temperature minimum requirements, pass through this system, not only make unit that there is the ability in underload period Effec-tive Function, and requirement of the unit underload period denitrating system to flue-gas temperature is preferably met, really realize power station and the energy-saving and environment-friendly upgrading of group group.
Description
Technical field
The utility model is related to a kind of wide load high-pressure heaters of fired power generating unit, and in particular to a kind of fired power generating unit heater
The new wide load of vapour source carries effect and out of stock technological system.
Background technology
Under present economic conditions, the contradiction that electric power production capacity is more than market power demand becomes increasingly conspicuous, and most of unit is real
The remote off-design point of border operating point, high load capacity are reduced to underrun, and unit needs the ability of wide Load Regulation operation, because
This, answers environmental protection pressure and policy requirements, and it is imperative to implement energy saving upgrading to power plant units.Most due to boiler design
Low steady combustion load is generally in 30%~40%BMCR.But when unit operation is in 50%BMCR or less will appear SCR reactors into
Mouthful smoke temperature is minimum less than catalyst put into operation temperature the case where some power plant of more than 50%BMCR loads when also to will appear smoke temperature inclined
Low situation cause denitrating system efficiency decline in addition it is out of service, reduce the operational percentage of denitrating system.In order to keep SCR de-
Nitre system should be able to be continuous between any operating mode that boiler minimum steady is fired between load and BMCR (boiler maximum continuous rating)
Safe operation needs to improve feed temperature, promotes economizer exit smoke temperature, ensures the minimum temperature that puts into operation of denitrating system at 295 DEG C
Left and right.
Utility model content
The utility model puies forward effect to solve the above-mentioned problems, to provide a kind of wide load of new vapour source of fired power generating unit heater
And out of stock technological system.
In order to achieve the above objectives, the technical solution of the utility model is as follows：
A kind of wide load of new vapour source of fired power generating unit heater puies forward effect and out of stock technological system, the fired power generating unit heater are new
It includes boiler that the wide load of vapour source, which puies forward effect and out of stock technological system, and boiler superheater, economizer and SCR denitration are equipped in the boiler
System passes through boiler superheater, economizer and SCR denitration system, the fired power generating unit heating successively into the cigarette vapour in boiler
The wide load of the new vapour source of device puies forward effect and out of stock technological system further includes：
The air intake of jet type heat pump, the jet type heat pump is taken out by piping connection boiler superheater and steam turbine respectively
Vapour Vapor outlet；
High-pressure heater, the air intake of the high-pressure heater are described by the venthole of piping connection jet type heat pump
The water inlet of high-pressure heater saves coal by piping connection oxygen-eliminating device, the water outlet of the high-pressure heater by piping connection
Device.
In a preferred embodiment of the utility model, power is equipped between the jet type heat pump and boiler superheater
Steam inlet isolating valve.
In a preferred embodiment of the utility model, the jet type heat pump and extracted steam from turbine Vapor outlet it
Between be equipped with sucking steam inlet isolating valve.
In a preferred embodiment of the utility model, the venthole of the jet type heat pump is exported equipped with jet port
Isolating valve.
High add is equipped in a preferred embodiment of the utility model, between the high-pressure heater and jet type heat pump
Import isolating valve.
In a preferred embodiment of the utility model, the air intake of the high-pressure heater is also associated with by pipeline
Height plus steam extraction source.
High add is equipped in a preferred embodiment of the utility model, between the high-pressure heater and high plus steam extraction source
Steam extraction isolating valve.
The utility model has the beneficial effects that：
The utility model solves partial load condition feed temperature, and relatively low cannot to meet Denitration in Boiler minimum to flue-gas temperature
It is required that contradiction, by this system, the ability for not only making unit have underload Effec-tive Function and preferably meets unit
Power station and the energy-saving and environment-friendly upgrading of group group are really realized in the requirement of underload denitration.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 1, the wide load of the new vapour source of fired power generating unit heater provided by the utility model carries effect and out of stock technological system,
It includes boiler 100, jet type heat pump 200 and high-pressure heater 300.
Boiler superheater 110, economizer 120 and SCR denitration system 130 are equipped in boiler 100, into boiler 100
Cigarette vapour can pass through boiler superheater 110 and economizer 120 successively first, then using denitrating system 130 carry out denitration.
Jet type heat pump 200, is equipped with the first air intake and the second air intake above, and the first air intake is direct by pipeline
Boiler superheater 110 is connected, jet type heat pump 200 can directly extract the boiler overheating steam that boiler superheater 110 generates
It is used as power steam, the boiler overheating steam of suction can generate high speed steam flow shape by the adjustable nozzle of jet type heat pump 200
At vacuum area.
Second air intake can be taken out steam turbine by piping connection extracted steam from turbine Vapor outlet, jet type heat pump 200
Decatize vapour is extracted into inside it, and forms heating live steam vapour source with the boiler overheating steam of suction, and jet type heat pump 200 is by formation
The heating new vapour source of vapour can transport by pipeline to high-pressure heater 300.
High-pressure heater 300, water inlet are for hyperbaric heating by piping connection oxygen-eliminating device 400, oxygen-eliminating device 400
Device 300 supplies water, water outlet by piping connection economizer 120, the water after the heating of high-pressure heater 300 can transport to
Economizer 120.
The air intake of high-pressure heater 300 passes through the venthole of piping connection jet type heat pump 200, jet type heat pump 200
Heating vapour vapour source can be transported in high-pressure heater 300, heating vapour vapour source can convey the water come to oxygen-eliminating device 400 and add
Heat, to improve the feed temperature that high-pressure heater 300 is conveyed to economizer 120 so that the heat exchange temperature and pressure of economizer 120 drop
Low, water supply declines in the caloric receptivity of 120 each sections of economizer, and outlet smoke temperature increases, that is, increases the reaction of SCR denitration system 130
Temperature, and improve the operation characteristic of SCR denitration system 130.
The wide load of the new vapour source of fired power generating unit heater of above-mentioned formation carry effect and out of stock technological system can substitute completely it is existing
The water supply of height plus steam extraction heating high-pressure heater, can also be used as high plus steam extraction supplement vapour source, to promote the wide load tune of unit
Feed temperature when section ensures unit heat economy.
In addition, the air intake of high-pressure heater 300 is also connected with high plus steam extraction source 310 by pipeline, when jet type heat pump 200
When not working, high-pressure heater 300 also can be heated directly by extracting high plus steam extraction, or when jet type heat pump 200 sprays
When the heating vapour vapour source penetrated is inadequate, supplement can be extracted from height plus steam extraction source 310.
Furthermore high plus steam extraction isolating valve 311 is equipped between high-pressure heater and high plus steam extraction source 310, in hyperbaric heating
Mouthful isolating valve 320 is added equipped with height between device 300 and jet type heat pump 200, mouth is added by height plus steam extraction isolating valve 311 and height
Heating vapour vapour source or high plus steam extraction may be selected in isolating valve 320.
Power steam import isolating valve 210, power steam are equipped between jet type heat pump 200 and boiler superheater 110
Import isolating valve 210 can control the output of the boiler overheating steam between jet type heat pump 200 and boiler superheater 110.
Sucking steam inlet isolating valve 220 is equipped between jet type heat pump 200 and extracted steam from turbine Vapor outlet,
Sucking steam inlet isolating valve 220 can control the supplement of extracted steam from turbine steam.
It is equipped with jet port on the venthole of jet type heat pump 200 and exports isolating valve 230, jet port exports isolating valve 230
The output of heating vapour vapour source in controllable jet type heat pump 200.
By the setting of above structure, the application need not increase heater, can directly be carried out to original high-pressure heater
Filling, improves feed temperature, and system is not changed significantly, reduced investment outlay.
In addition, the application has used jet type heat pump steam supply, by low pressure vapour source boost in pressure, low-quality vapour source is expanded
The relatively low cold steam extraction again of quality is more utilized in use scope.
Furthermore the application strengthens system backheat, and the efficiency of cycle is made to further increase, dropped in entire therrmodynamic system load
In the case of low, height plus throttle flow are supplemented, so that feed temperature is restored to and increases load condition, in equal conditions
Under, entire therrmodynamic system cycle efficieny increases.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system, the fired power generating unit heater live steam
It includes boiler that the wide load in source, which puies forward effect and out of stock technological system, and boiler superheater, economizer and SCR denitration system are equipped in the boiler
System passes through boiler superheater, economizer and SCR denitration system, which is characterized in that the thermoelectricity successively into the cigarette vapour in boiler
The wide load of the new vapour source of unit heat device puies forward effect and out of stock technological system further includes：
The air intake of jet type heat pump, the jet type heat pump is steamed by piping connection boiler superheater and extracted steam from turbine respectively
Vapour venthole；
The air intake of high-pressure heater, the high-pressure heater passes through the venthole of piping connection jet type heat pump, the high pressure
The water inlet of heater passes through piping connection economizer by piping connection oxygen-eliminating device, the water outlet of the high-pressure heater.
2. a kind of wide load of new vapour source of fired power generating unit heater according to claim 1 carries effect and out of stock technological system,
It is characterized in that, power steam import isolating valve is equipped between the jet type heat pump and boiler superheater.
3. a kind of wide load of new vapour source of fired power generating unit heater according to claim 1 carries effect and out of stock technological system,
It is characterized in that, sucking steam inlet isolating valve is equipped between the jet type heat pump and extracted steam from turbine Vapor outlet.
4. a kind of wide load of new vapour source of fired power generating unit heater according to claim 1 carries effect and out of stock technological system,
It is characterized in that, the venthole of the jet type heat pump is equipped with jet port and exports isolating valve.
5. a kind of wide load of new vapour source of fired power generating unit heater according to claim 1 carries effect and out of stock technological system,
It is characterized in that, a mouthful isolating valve is added equipped with height between the high-pressure heater and jet type heat pump.
6. a kind of wide load of new vapour source of fired power generating unit heater according to claim 1 carries effect and out of stock technological system,
It is characterized in that, the air intake of the high-pressure heater is also associated with high plus steam extraction source by pipeline.
7. a kind of wide load of new vapour source of fired power generating unit heater according to claim 6 carries effect and out of stock technological system,
It is characterized in that, high plus steam extraction isolating valve is equipped between the high-pressure heater and high plus steam extraction source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721539681.4U CN207990589U (en) | 2017-11-17 | 2017-11-17 | A kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721539681.4U CN207990589U (en) | 2017-11-17 | 2017-11-17 | A kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system |
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| Publication Number | Publication Date |
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| CN207990589U true CN207990589U (en) | 2018-10-19 |
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| CN201721539681.4U Active CN207990589U (en) | 2017-11-17 | 2017-11-17 | A kind of wide load of new vapour source of fired power generating unit heater carries effect and out of stock technological system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754343A (en) * | 2022-04-11 | 2022-07-15 | 峰和轻碳(北京)设计研究院有限公司 | Wide-load denitration system and adjusting method considering stable combustion performance of boiler |
-
2017
- 2017-11-17 CN CN201721539681.4U patent/CN207990589U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754343A (en) * | 2022-04-11 | 2022-07-15 | 峰和轻碳(北京)设计研究院有限公司 | Wide-load denitration system and adjusting method considering stable combustion performance of boiler |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211009 Address after: Room a2-3063, 58 Fumin Branch Road, Hengsha Township, Chongming District, Shanghai, 201914 (Shanghai Hengtai Economic Development Zone) Patentee after: Shanghai Jingchen Electric Power Technology Center Address before: 232001 Pingfang 9-2, laolongan Dongquan village, tianjia'an District, Huainan City, Anhui Province Patentee before: Cheng Jinrui |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211028 Address after: 5 / F, 277 Huqingping Road, Minhang District, Shanghai, 201105 Patentee after: BOCO (Shanghai) Power Engineering Control Co., Ltd Address before: Room a2-3063, 58 Fumin Branch Road, Hengsha Township, Chongming District, Shanghai, 201914 (Shanghai Hengtai Economic Development Zone) Patentee before: Shanghai Jingchen Electric Power Technology Center |