CN208619183U - Supercritical generating sets steam extraction heat regenerative system with steam condenser - Google Patents
Supercritical generating sets steam extraction heat regenerative system with steam condenser Download PDFInfo
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Abstract
The supercritical generating sets steam extraction heat regenerative system with steam condenser that the utility model discloses a kind of, including eight non-adjustment steam extractions, the inside of eight non-adjustment steam extractions are sequentially installed with the non-adjustment steam extraction of level-one, the non-adjustment steam extraction of second level, the non-adjustment steam extraction of three-level, the non-adjustment steam extraction of level Four, the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions from left to right, and the non-adjustment steam extraction of the level-one, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level are connected with alone high-pressure heater.The utility model is by installing externally arranged steam cooler in the corresponding high-pressure heater of the non-adjustment steam extraction of three-level, reduced using the water supply of the non-adjustment steam extraction of level-one corresponding high-pressure heater outlet the corresponding high-pressure heater of the non-adjustment steam extraction of three-level into the vapour degree of superheat, reduce heat transfer temperature difference, irreversible heat exchange loss is reduced, the heat-economy of unit is improved.
Description
Technical field
It is specifically a kind of to have steam the utility model relates to 350MW supercritical generating sets steam extraction heat regenerative system field
The supercritical generating sets steam extraction heat regenerative system of cooler.
Background technique
Feed-water heater is using steam turbine intermediate extraction come the steam-water heat exchanging Unit of heating boiler feed water, also known as backheat
Heater, feed-water heater include Gao ﹑ low-pressure heater and oxygen-eliminating device, the water lateral pressure between condenser and oxygen-eliminating device compared with
Low is low-pressure heater, and the higher water lateral pressure after feed pump is high-pressure heater, and feed-water heater is passed by carbonated drink
Hot mode can be divided into surface-type and two kinds hybrid, and low-pressure heater mostly uses surface-type, and high-pressure heater is all made of surface-type,
Surface heater is divided into incense coil tubular type and two kinds of U-tube formula by structure type, and U-tube formula is according to water inlet position and arrangement
It is divided into vertical and horizontal, just vertical and two kinds of side-stand type is divided into according to water inlet pipe position again, for the item constant in extraction pressure
The leaving water temperature that heater is improved under part is equipped with superheated steam cooling section and hydrophobic in the heater of large capacity resuperheat unit
Cooling section, by using in 350MW supercritical generating sets steam extraction heat regenerative system.
But the 350MW supercritical generating sets steam extraction heat regenerative system heat transfer temperature difference of existing exemplary configurations is higher, causes
Irreversible heat exchange loss is excessive, and the heat regenerative system thermal efficiency is lower, to keep the heat-economy of unit relatively low, while actually answering
It is larger with middle net coal consumption rate.
Utility model content
The purpose of this utility model is to provide a kind of supercritical generating sets steam extraction backheat system with steam condenser
System, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions:
A kind of supercritical generating sets steam extraction heat regenerative system with steam condenser, including eight non-adjustment steam extractions, institute
Stating the inside of eight non-adjustment steam extractions, to be sequentially installed with the non-adjustment steam extraction of level-one, the non-adjustment steam extraction of second level, three-level from left to right non-
It is non-to adjust steam extraction, the non-adjustment steam extraction of level Four, the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades
Steam extraction is adjusted, the non-adjustment steam extraction of the level-one, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level are connected with alone high pressure and add
Hot device, the non-adjustment steam extraction of level Four are connected with oxygen-eliminating device, the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment steam extractions, seven grades it is non-
Adjustment steam extraction and eight grades of non-adjustment steam extractions are respectively connected with low-pressure heater, and the corresponding high pressure of the non-adjustment steam extraction of three-level adds
The side of hot device is equipped with externally arranged steam cooler.
As a further solution of the present invention: the non-adjustment steam extraction of level Four is other than for oxygen-eliminating device steam supply, also for
Feed pump turbine and Auxiliary Steam steam supply.
The non-adjustment steam extraction of the level-one, the non-adjustment steam extraction of second level and three-level as a further solution of the present invention,
The high-pressure heater that non-adjustment steam extraction is correspondingly connected with is horizontal, U-tube, double-flow structure.
The non-adjustment steam extraction of the level-one, the non-adjustment steam extraction of second level and three-level as a further solution of the present invention,
The inside for the high-pressure heater that non-adjustment steam extraction is correspondingly connected with is made of steam cooling section, condensation section and hydrophobic cooling section.
As a further solution of the present invention, the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment steam extractions, seven grades it is non-
The low-pressure heater that adjustment steam extraction and eight grades of non-adjustment steam extractions are correspondingly connected with is horizontal, full solder type structure.
As a further solution of the present invention, the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment steam extractions, seven grades it is non-
The inside for the low-pressure heater that adjustment steam extraction and eight grades of non-adjustment steam extractions are correspondingly connected with is made of condensation section and hydrophobic cooling section.
Described seven grades non-adjustment steam extractions and the corresponding company of eight grades of non-adjustment steam extractions as a further solution of the present invention,
The low-pressure heater connect is the compound heater for sharing a shell, and horizontal type structure is arranged in the throat of condenser.
Do not have inside the oxygen-eliminating device that the non-adjustment steam extraction of the level Four is correspondingly connected with as a further solution of the present invention,
There is installation drain cooler.
Compared with prior art, the utility model has the beneficial effects that the utility model is exemplary configurations in heat regenerative system
On the basis of, heat regenerative system is optimized, is steamed by installing external in the corresponding high-pressure heater of the non-adjustment steam extraction of three-level
Vapour cooler, it is corresponding to reduce the non-adjustment steam extraction of three-level using the water supply of the corresponding high-pressure heater outlet of the non-adjustment steam extraction of level-one
High-pressure heater into the vapour degree of superheat, reduce heat transfer temperature difference, reduce irreversible heat exchange and lose, steam extraction is made full use of to overheat
Enthalpy improves the heat regenerative system thermal efficiency by improving feed temperature, to make the heat-economy of unit improve, and in practical application
In can reduce about 0.4 gram/kilowatt hour of net coal consumption rate.
Detailed description of the invention
Fig. 1 is the therrmodynamic system structural schematic diagram of the utility model.
Fig. 2 is the corresponding heat balance diagram of therrmodynamic system of the utility model.
Fig. 3 is that the utility model optimizes front and back comparison diagram.
Specific embodiment
Please refer to Fig. 1~3, in the utility model embodiment, a kind of supercritical generating sets with steam condenser are taken out
The inside of vapour heat regenerative system, including eight non-adjustment steam extractions, eight non-adjustment steam extractions is sequentially installed with the non-tune of level-one from left to right
Whole steam extraction, the non-adjustment steam extraction of second level, the non-adjustment steam extraction of three-level, the non-adjustment steam extraction of level Four, the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment
Steam extraction, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions, the non-adjustment steam extraction of level-one, the non-adjustment steam extraction of second level and the non-adjustment of three-level
Steam extraction is connected with alone high-pressure heater, and the non-adjustment steam extraction of level-one, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level are corresponding
The high-pressure heater of connection is horizontal, U-tube, double-flow structure, and internal by steam cooling section, condensation section and hydrophobic cold
But section forms, and the non-adjustment steam extraction of level Four is also feed pump turbine and Auxiliary Steam steam supply other than for oxygen-eliminating device steam supply,
The non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are respectively to be connected with low pressure
Heater, what the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions were correspondingly connected with
Low-pressure heater is horizontal, full solder type structure, and inside is made of condensation section and hydrophobic cooling section, wherein seven grades of non-tune
The low-pressure heater that whole steam extraction and eight grades of non-adjustment steam extractions are correspondingly connected with is the compound heater for sharing a shell, horizontal type structure
It is arranged in the throat of condenser, is fitted without drain cooler, three-level inside the oxygen-eliminating device that the non-adjustment steam extraction of level Four is correspondingly connected with
The non-side for adjusting the corresponding high-pressure heater of steam extraction is equipped with externally arranged steam cooler.
The working principle of the utility model is: non-by using the non-adjustment steam extraction of level-one, the non-adjustment steam extraction of second level and three-level
The high-pressure heater that is correspondingly connected with of adjustment steam extraction is horizontal, U-tube, double-flow structure, and it is internal by steam cooling section, it is solidifying
Tie section and hydrophobic cooling section composition, while the non-adjustment steam extraction of level Four is other than for oxygen-eliminating device steam supply, also for feed pump turbine with
Auxiliary Steam steam supply；And then it is non-using the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades
The low-pressure heater that adjustment steam extraction is correspondingly connected with is horizontal, full solder type structure, and internal by condensation section and hydrophobic cooling
Duan Zucheng, wherein the low-pressure heater that seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are correspondingly connected with is to share a shell
Compound heater, horizontal type structure are arranged in the throat of condenser, do not have inside the oxygen-eliminating device that the non-adjustment steam extraction of level Four is correspondingly connected with
Drain cooler is installed, by installing externally arranged steam cooler in the corresponding high-pressure heater of the non-adjustment steam extraction of three-level, is utilized
Level-one is non-to adjust the water supply that the corresponding high-pressure heater of steam extraction exports to reduce the corresponding high-pressure heater of the non-adjustment steam extraction of three-level
Into the vapour degree of superheat, reduce heat transfer temperature difference, reduce irreversible heat exchange loss, make full use of steam extraction to cross heat content, given by raising
Coolant-temperature gage improves the heat regenerative system thermal efficiency, so that the heat-economy of unit be made to improve, and can reduce power supply in practical applications
About 0.4 gram/kilowatt hour of coal consumption.
Claims (8)
1. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser, including eight non-adjustment steam extractions, special
Sign is: the inside of eight non-adjustment steam extractions is sequentially installed with the non-adjustment steam extraction of level-one from left to right, the non-adjustment of second level is taken out
The non-adjustment steam extraction of vapour, three-level, the non-adjustment steam extraction of level Four, the non-adjustment steam extraction of Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions
With eight grades of non-adjustment steam extractions, the non-adjustment steam extraction of the level-one, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level are connected alone
There is a high-pressure heater, the non-adjustment steam extraction of level Four is connected with oxygen-eliminating device, and the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment are taken out
Vapour, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are respectively to be connected with low-pressure heater, the non-adjustment steam extraction pair of three-level
The side for the high-pressure heater answered is equipped with externally arranged steam cooler.
2. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: the non-adjustment steam extraction of level Four also supplies other than for oxygen-eliminating device steam supply for feed pump turbine and Auxiliary Steam
Vapour.
3. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: the non-high-pressure heater for adjusting steam extraction, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level and being correspondingly connected with of the level-one
It is horizontal, U-tube, double-flow structure.
4. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: the non-high-pressure heater for adjusting steam extraction, the non-adjustment steam extraction of second level and the non-adjustment steam extraction of three-level and being correspondingly connected with of the level-one
Inside by steam cooling section, condensation section and hydrophobic cooling section form.
5. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are corresponding connects
The low-pressure heater connect is horizontal, full solder type structure.
6. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: the non-adjustment steam extraction of the Pyatyi, six grades of non-adjustment steam extractions, seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are corresponding connects
The inside of the low-pressure heater connect is made of condensation section and hydrophobic cooling section.
7. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1 or 6,
Be characterized in that: the low-pressure heater that seven grades of non-adjustment steam extractions and eight grades of non-adjustment steam extractions are correspondingly connected with is to share a shell
Compound heater, horizontal type structure is arranged in the throat of condenser.
8. a kind of supercritical generating sets steam extraction heat regenerative system with steam condenser according to claim 1, special
Sign is: being fitted without drain cooler inside the oxygen-eliminating device that the non-adjustment steam extraction of level Four is correspondingly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043258.XU CN208619183U (en) | 2018-06-29 | 2018-06-29 | Supercritical generating sets steam extraction heat regenerative system with steam condenser |
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| CN201821043258.XU CN208619183U (en) | 2018-06-29 | 2018-06-29 | Supercritical generating sets steam extraction heat regenerative system with steam condenser |
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| CN208619183U true CN208619183U (en) | 2019-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590787A (en) * | 2018-06-29 | 2018-09-28 | 神华国华广投（柳州）发电有限责任公司 | Supercritical generating sets steam extraction heat regenerative system with steam condenser |
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2018
- 2018-06-29 CN CN201821043258.XU patent/CN208619183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590787A (en) * | 2018-06-29 | 2018-09-28 | 神华国华广投（柳州）发电有限责任公司 | Supercritical generating sets steam extraction heat regenerative system with steam condenser |
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Address after: 545600 No. 168, Jianzhong West, Luzhai County, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Guoneng guangtou Liuzhou Power Generation Co.,Ltd. Address before: 545600 No. 168, Jianzhong West, Luzhai County, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: SHENHUA GUOHUA GUANGTOU (LIUZHOU) POWER GENERATION Co.,Ltd. |