CN202166044U - Drainage system of supercritical once-through boiler - Google Patents
Drainage system of supercritical once-through boiler Download PDFInfo
- Publication number
- CN202166044U CN202166044U CN2011202058973U CN201120205897U CN202166044U CN 202166044 U CN202166044 U CN 202166044U CN 2011202058973 U CN2011202058973 U CN 2011202058973U CN 201120205897 U CN201120205897 U CN 201120205897U CN 202166044 U CN202166044 U CN 202166044U
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- CN
- China
- Prior art keywords
- communicated
- enlarging device
- steam turbine
- dewatering capacity
- boiler
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Abstract
The utility model discloses a drainage system of a supercritical once-through boiler, solving the problems of high equipment investment and complex control logics of the existing device. The drainage system comprises a vertical drainage flash tank (2), a water seal device (8), a turbine drainage flash tank (9) and a main turbine condenser (10), wherein the vertical drainage flash tank (2) is fixedly arranged above the main turbine condenser (10), and communicated with the once-through boiler of a supercritical unit through a drainage pipeline (1); a three-way joint (11) is arranged at the bottom of the vertical drainage flash tank (2); and one output port of the three-way joint (11) is communicated with the turbine drainage flash tank (9) and the main turbine condenser (10), while the other output port thereof is communicated with a waste water pool (5) through a waste water shutoff valve (4). The drainage system achieves the purposes of simplified system, saved investment and simple and reliable operation, and thereby is suitable for popularization and application in the supercritical once-through boiler.
Description
Technical field
The utility model relates to a kind of thermal power plant supercritical unit direct current cooker and starts draining system.
Background technology
In recent years, the supercritical unit of big capacity, high parameter became main force's unit of China's thermoelectricity market development because of many advantages such as it is efficient, energy-saving and environmental protection.And the startup draining system of supercritical unit direct current cooker plays important effect to the safe operation of unit.When domestic most supercritical unit direct current cooker starts; The higher hydrophobic entering air suspended type of boiler of pressure starts the dewatering capacity-enlarging device and carries out dilatation; Hydrophobic after the dilatation drained when water quality is defective, the qualified back of water quality through the boiler startup drainage pump with the hydrophobic steam turbine dewatering capacity-enlarging device that pumps into; To reclaim working medium, reduce the loss.The shortcoming of this system's setting is: system complex, and equipment investment is big, and control logic is complicated; What the boiler startup drainage pump was carried is saturation water, and pressure has fluctuation to be prone to cavitation slightly, and drainage pump running environment is abominable; Hydrophobic quantitative changeization is big and wayward startup stage that the drain tank water level receiving, and protection acts frequently.
Summary of the invention
The utility model provides a kind of draining system of supercritical once-through boiler to solve the system complex that existing apparatus exists, and equipment investment is big, control logic complicated technology problem.
The utility model overcomes the above problems through following scheme:
A kind of draining system of supercritical once-through boiler; Comprise vertical dewatering capacity-enlarging device, water seal arrangement, steam turbine dewatering capacity-enlarging device and main steam turbine condenser; Described vertical dewatering capacity-enlarging device is fixedly installed on the top of main steam turbine condenser, and vertical dewatering capacity-enlarging device is communicated with the supercritical unit direct current cooker through hydrophobic pipeline, is provided with threeway in the bottom of vertical dewatering capacity-enlarging device; A delivery outlet of threeway is provided with the qualified drain water piping of water quality; Another delivery outlet of threeway is provided with the waste water hydrophobic pipeline, and the waste water hydrophobic pipeline is communicated with wastewater disposal basin through the waste water shut-off valve, and the drain water piping that water quality is qualified is communicated with water seal arrangement through the qualified shut-off valve of water quality; Water seal arrangement is communicated with steam turbine dewatering capacity-enlarging device, and steam turbine dewatering capacity-enlarging device is communicated with the main steam turbine condenser.
When water quality was relatively poor, the waste water shut-off valve was opened, and the shut-off valve that water quality is qualified turn-offs, and waste water is drained in the wastewater disposal basin (5).
The present invention has cancelled the supercritical unit direct current cooker to start drainage pump, control valve, reaches the simplification system, reduces investment outlay, moves simple and reliable purpose, is adapted at applying in the supercritical once-through boiler.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Specific embodiment
A kind of draining system of supercritical once-through boiler; Comprise vertical dewatering capacity-enlarging device 2, water seal arrangement 8, steam turbine dewatering capacity-enlarging device 9 and main steam turbine condenser 10; Described vertical dewatering capacity-enlarging device 2 is fixedly installed on the top of main steam turbine condenser 10; Vertical dewatering capacity-enlarging device 2 is communicated with the supercritical unit direct current cooker through hydrophobic pipeline 1; Be provided with threeway 11 in the bottom of vertical dewatering capacity-enlarging device 2, a delivery outlet of threeway 11 is provided with the qualified drain water piping of water quality 6, and another delivery outlet of threeway 11 is provided with waste water hydrophobic pipeline 3; Waste water hydrophobic pipeline 3 is communicated with wastewater disposal basin 5 through waste water shut-off valve 4; The drain water piping 6 that water quality is qualified is communicated with water seal arrangement 8 through the qualified shut-off valve 7 of water quality, and water seal arrangement 8 is communicated with steam turbine dewatering capacity-enlarging device 9, and steam turbine dewatering capacity-enlarging device 9 is communicated with main steam turbine condenser 10.
When water quality was relatively poor, waste water shut-off valve 4 was opened, and precision processing shut-off valve 7 turn-offs, and waste water is drained in the wastewater disposal basin 5.
The present invention is that the cancellation supercritical once-through boiler starts drainage pump; Air suspended type is started the dewatering capacity-enlarging device and drain tank unites two into one, adopt vertical dewatering capacity-enlarging device, boiler startup is hydrophobic to be started in the dewatering capacity-enlarging device after the dilatation at air suspended type; Utilize the differential static pressure between dewatering capacity-enlarging device and the main steam turbine condenser; Get into the main steam turbine condenser through water seal arrangement from row, dewatering capacity-enlarging device water level need not to start drainage pump and control valve according to differential static pressure self-regulation.Problems such as it is complicated to have solved existing supercritical once-through boiler startup draining system, and initial cost is big, and operating cost is high, service condition is abominable, protection acts frequently.
The supercritical unit direct current cooker start hydrophobic by the road 1, get into vertical dewatering capacity-enlarging device 2 dilatations; Hydrophobicly when water quality is relatively poor drain in the wastewater disposal basin 5 through waste water hydrophobic pipeline 3, waste water shut-off valve 4; When water quality satisfied requiring of condensate precision processing influent quality, precision processing drain water piping 6, precision processing shut-off valve 7, water seal arrangement 8, to steam turbine dewatering capacity-enlarging device 9 got into main steam turbine condenser 10 at last.
Claims (1)
1. the draining system of a supercritical once-through boiler; Comprise vertical dewatering capacity-enlarging device (2), water seal arrangement (8), steam turbine dewatering capacity-enlarging device (9) and main steam turbine condenser (10); It is characterized in that; Described vertical dewatering capacity-enlarging device (2) is fixedly installed on the top of main steam turbine condenser (10); Vertical dewatering capacity-enlarging device (2) is communicated with the supercritical unit direct current cooker through hydrophobic pipeline (1); Be provided with threeway (11) in the bottom of vertical dewatering capacity-enlarging device (2), a delivery outlet of threeway (11) is provided with the qualified drain water piping of water quality (6), and another delivery outlet of threeway (11) is provided with waste water hydrophobic pipeline (3); Waste water hydrophobic pipeline (3) is communicated with wastewater disposal basin (5) through waste water shut-off valve (4); The drain water piping that water quality is qualified (6) is communicated with water seal arrangement (8) through precision processing shut-off valve (7), and water seal arrangement (8) is communicated with steam turbine dewatering capacity-enlarging device (9), and steam turbine dewatering capacity-enlarging device (9) is communicated with main steam turbine condenser (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202058973U CN202166044U (en) | 2011-06-18 | 2011-06-18 | Drainage system of supercritical once-through boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202058973U CN202166044U (en) | 2011-06-18 | 2011-06-18 | Drainage system of supercritical once-through boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166044U true CN202166044U (en) | 2012-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202058973U Expired - Lifetime CN202166044U (en) | 2011-06-18 | 2011-06-18 | Drainage system of supercritical once-through boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166044U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270275A (en) * | 2017-07-21 | 2017-10-20 | 袁雄俊 | A kind of energy-saving flash vessel disappears white system |
| CN110107880A (en) * | 2019-05-23 | 2019-08-09 | 中国电力工程顾问集团西南电力设计院有限公司 | The anti-recirculated water in thermal power plant flows backward the system into condenser |
-
2011
- 2011-06-18 CN CN2011202058973U patent/CN202166044U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270275A (en) * | 2017-07-21 | 2017-10-20 | 袁雄俊 | A kind of energy-saving flash vessel disappears white system |
| CN110107880A (en) * | 2019-05-23 | 2019-08-09 | 中国电力工程顾问集团西南电力设计院有限公司 | The anti-recirculated water in thermal power plant flows backward the system into condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CEEC SHANXI ELECTRIC POWER EXPLORATION + DESIGN IN Free format text: FORMER NAME: SHANXI ELECTRIC POWER EXPLORATION + DESIGN INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: 030001 Yingze street, Shanxi, No. 255, No. Patentee after: CEEC Shanxi Electric Power Exploration & Design Institute Address before: 030001 No. 255, Yingze Avenue, Yingze District, Shanxi, Taiyuan Patentee before: Shanxi Electric Power Exploration & Design Institute |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP SHANXI ELECTRIC POW Free format text: FORMER NAME: CEEC SHANXI ELECTRIC POWER EXPLORATION + DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 030001 Yingze street, Shanxi, No. 255, No. Patentee after: Co., Ltd of Chinese energy construction group Shanxi Electric Power Exploration & Design Institute Address before: 030001 Yingze street, Shanxi, No. 255, No. Patentee before: CEEC Shanxi Electric Power Exploration & Design Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |