CN101560967B - Drainage system of feed pump turbine arranged at low position - Google Patents
Drainage system of feed pump turbine arranged at low position Download PDFInfo
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- CN101560967B CN101560967B CN2009103027734A CN200910302773A CN101560967B CN 101560967 B CN101560967 B CN 101560967B CN 2009103027734 A CN2009103027734 A CN 2009103027734A CN 200910302773 A CN200910302773 A CN 200910302773A CN 101560967 B CN101560967 B CN 101560967B
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Abstract
The invention discloses a drainage system of a feed pump turbine arranged at low position, comprising a steam feed pump group (4) and a feed pump turbine drainage tank (8) positioned below the steam feed pump group (4); an ejector (10) is connected at the bottom of the feed pump turbine drainage tank (8) through a drainage pipe (7); the ejector (10) is connected to a condenser (6) through the drainage pipe (7); a steam balance pipe (9) is arranged above the feed pump turbine drainage tank (8); the steam balance pipe (9) is communicated with the steam side of the condenser (6); one end of the ejector (10) which is not connected with the condenser (6) is connected with a pneumatic adjusting valve (11) through the drainage pipe (7); and the inner wall of the feed pump turbine drainage tank (8) is provided with a water level height sensor which is electrically connected with the pneumatic adjusting valve (11). The steam feed pump group has lower elevation, convenient installation and easy control.
Description
Technical field
The present invention relates to the improvement of feed pump turbine draining system by it.
Background technique
The draining system of the feed pump turbine that power plant uses, the conventional design of its steam feed pump group is to adopt high-order the layout, as shown in Figure 1: steam feed pump group 4 has comprised the front-mounted pump 3, feed water pump 2 and the feed pump turbine 1 that connect successively, about 15 meters of steam feed pump group 4 road clearances, be connected to development unit 5 before the vapour condenser 6 by drain water piping 7, development unit 5 liftoff about 0.3 meter, in the drain water piping of this higher drop, water can flow to vapour condenser 6 by gravity flow.Its major defect is: can only rely on height fall hydrophobic, can't control hydrophobic, the position of steam feed pump group 4 is too high, has increased mounting hardness and cost, can't satisfy the engine request that can't adopt conventional system to be provided with because of the unit transformation simultaneously.
Summary of the invention
It is lower, easy for installation to the purpose of this invention is to provide a kind of steam feed pump group absolute altitude, the feed pump turbine draining system that is easy to control.
The feed pump turbine draining system that low level of the present invention is arranged is achieved by following technical proposals:
The feed pump turbine draining system that low level is arranged, comprised the front-mounted pump 3 that connects by successively, the steam feed pump group 4 that feed water pump 2 and feed pump turbine 1 are formed, also comprise the feed pump turbine drain tank 8 that is positioned at steam feed pump group 4 belows, steam feed pump group 4 is connected by drain water piping 7 with feed pump turbine drain tank 8, hydrophobic flowing automatically to earlier in the feed pump turbine drain tank 8, hydrophobic maintenance certain height in the feed pump turbine drain tank 8, the bottom of feed pump turbine drain tank 8 connects sparger 10 by drain water piping 7, sparger 10 is connected to vapour condenser 6 by drain water piping 7, sparger 10 provides power, and the water that comes of feed pump turbine drain tank 8 is ejected in the vapour condenser 6.
For guaranteeing the stable operation of this draining system, steam equalizing pipe 9 is set above feed pump turbine drain tank 8, and steam equalizing pipe 9 is communicated with vapour condenser 6 vapour sides, is used in time the saturated vapour of feed pump turbine drain tank 8 tops being drained, the balance that keep-ups pressure is kept the negative pressure operation.
An end that is not connected with vapour condenser 6 at sparger 10 connects pneumatic control valve 11 by drain water piping 7, feed pump turbine drain tank 8 inwalls have a height of water level sensor, this sensor is electrically connected with pneumatic control valve 11, the height of water level sensor converts height of water level to electrical signal, this SC sigmal control is regulated the aperture of pneumatic control valve 11, change the pressure and the flow of sparger 10 inlet power water, thereby thereby make the hydrophobic changes in flow rate that is pulled away keep feed pump turbine drain tank 8 middle water levels certain.
Simultaneously, more than design can also comprise that the steam feed pump group 4 that many groups are made up of the front-mounted pump 3, feed water pump 2 and the feed pump turbine 1 that connect successively is connected by drain water piping 7 with feed pump turbine drain tank 8.A plurality of spargers 10 that are connected with the bottom of feed pump turbine drain tank 8 by drain water piping 7, a plurality of spargers 10 are connected to vapour condenser 6 by drain water piping 7.
The feed pump turbine draining system that this low level is arranged, it is characterized in that: described steam feed pump group (4) absolute altitude 1m-4m, feed pump turbine drain tank (8) absolute altitude is lower than steam feed pump group (4) 1m-6m, vapour condenser (6) absolute altitude 0m.
The feed pump turbine draining system that low level of the present invention is arranged compared with prior art has following good effect: its steam feed pump group absolute altitude of feed pump turbine draining system that this low level is arranged is lower, easy for installation, is easy to control.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural drawing of feed pump turbine draining system conventional design;
Fig. 2 is the structural drawing of the feed pump turbine draining system of low level layout.
Embodiment
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The feed pump turbine draining system that low level is as shown in Figure 2 arranged comprises: feed pump turbine 1, feed water pump 2, front-mounted pump 3, drain water piping 7, feed pump turbine drain tank 8, steam equalizing pipe 9, sparger 10, pneumatic control valve 11.
Wherein, the front-mounted pump 3 of Lian Jieing, feed water pump 2 and feed pump turbine 1 are formed steam feed pump group 4 successively, steam feed pump group 4 designed elevation 2.2m, also comprise the feed pump turbine drain tank 8 that is positioned at steam feed pump group 4 belows, feed pump turbine drain tank 8 is positioned at underground, its designed elevation is negative 1.6m
Steam feed pump group 4 is connected by drain water piping 7 with feed pump turbine drain tank 8, hydrophobic flowing automatically to earlier in the feed pump turbine drain tank 8, hydrophobic maintenance certain height in the feed pump turbine drain tank 8, the bottom of feed pump turbine drain tank 8 connects sparger 10 by drain water piping 7, sparger 10 is connected to vapour condenser 6 by drain water piping 7, sparger 10 provides power, and the water that comes of feed pump turbine drain tank 8 is ejected in the vapour condenser 6, and vapour condenser 6 is located immediately at ground.
An end that is not connected with vapour condenser 6 at sparger 10 connects pneumatic control valve 11 by drain water piping 7, feed pump turbine drain tank 8 inwalls have a height of water level sensor, this sensor is electrically connected with pneumatic control valve 11, the height of water level sensor converts height of water level to electrical signal, this SC sigmal control is regulated the aperture of pneumatic control valve 11, change the pressure and the flow of sparger 10 inlet power water, thereby thereby make the hydrophobic changes in flow rate that is pulled away keep feed pump turbine drain tank 8 middle water levels certain.For guaranteeing the stable operation of this draining system, steam equalizing pipe 9 is set above feed pump turbine drain tank 8, and steam equalizing pipe 9 is communicated with vapour condenser 6 vapour sides, is used in time the saturated vapour of feed pump turbine drain tank 8 tops being drained, the balance that keep-ups pressure is kept the negative pressure operation.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the feed pump turbine draining system arranged of low level, comprised the front-mounted pump (3) that connects by successively, the steam feed pump group (4) that feed water pump (2) and feed pump turbine (1) are formed, it is characterized in that: also comprise the feed pump turbine drain tank (8) that is positioned at steam feed pump group (4) below, steam feed pump group (4) is connected by drain water piping (7) with feed pump turbine drain tank (8), the bottom of feed pump turbine drain tank (8) connects sparger (10) by drain water piping (7), and sparger (10) is connected to vapour condenser (6) by drain water piping (7).
2. the feed pump turbine draining system that low level according to claim 1 is arranged, it is characterized in that: in the top of feed pump turbine drain tank (8) steam equalizing pipe (9) is set, steam equalizing pipe (9) is communicated with vapour condenser (6) vapour side.
3. the feed pump turbine draining system that low level according to claim 1 is arranged, it is characterized in that: an end that is not connected with vapour condenser (6) at sparger (10) connects pneumatic control valve (11) by drain water piping (7), feed pump turbine drain tank (8) inwall has a height of water level sensor, and this sensor is electrically connected with pneumatic control valve (11).
4. the feed pump turbine draining system that low level according to claim 1 is arranged, it is characterized in that: also comprise at least one group of other steam feed pump group, this at least one group other steam feed pump group is made up of the other front-mounted pump that connects successively, other feed water pump and other feed pump turbine, and is connected with described feed pump turbine drain tank by drain water piping.
5. the feed pump turbine draining system that low level according to claim 1 is arranged, it is characterized in that: described steam feed pump group (4) absolute altitude 1m-4m, feed pump turbine drain tank (8) absolute altitude is lower than steam feed pump group (4) 1m-6m, vapour condenser (6) absolute altitude 0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103027734A CN101560967B (en) | 2009-05-31 | 2009-05-31 | Drainage system of feed pump turbine arranged at low position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103027734A CN101560967B (en) | 2009-05-31 | 2009-05-31 | Drainage system of feed pump turbine arranged at low position |
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| CN101560967A CN101560967A (en) | 2009-10-21 |
| CN101560967B true CN101560967B (en) | 2011-06-22 |
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| CN2009103027734A Active CN101560967B (en) | 2009-05-31 | 2009-05-31 | Drainage system of feed pump turbine arranged at low position |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845973B (en) * | 2010-04-30 | 2012-08-15 | 中广核工程有限公司 | Vertical pipe drainage system for turbine condenser |
| CN102322307A (en) * | 2011-06-18 | 2012-01-18 | 山西省电力勘测设计院 | Condensed water automatic discharging system of water-feeding pump steam turbine of direct air cooling unit |
| CN103397917B (en) * | 2013-08-13 | 2016-01-13 | 中国电力工程顾问集团华东电力设计院有限公司 | The back pressure type small turbine drive feed-water pump of frequency conversion generator speed governing and method |
| CN103398005B (en) * | 2013-08-13 | 2016-08-10 | 中国电力工程顾问集团华东电力设计院有限公司 | The pure condensate formula small turbine drive feed-water pump of frequency conversion generator speed governing and method |
| CN109709832B (en) * | 2017-10-25 | 2021-11-05 | 中国船舶重工集团公司第七一九研究所 | Control system and method for drain box of marine nuclear power platform |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201507411U (en) * | 2009-05-31 | 2010-06-16 | 中国电力工程顾问集团西南电力设计院 | Low-position drainage system for steam turbine of feed-water pump |
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2009
- 2009-05-31 CN CN2009103027734A patent/CN101560967B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201507411U (en) * | 2009-05-31 | 2010-06-16 | 中国电力工程顾问集团西南电力设计院 | Low-position drainage system for steam turbine of feed-water pump |
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| CN101560967A (en) | 2009-10-21 |
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Owner name: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST Free format text: FORMER NAME: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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Address after: 610000 No. 18 Dongfeng Road, Sichuan, Chengdu Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610000 No. 18 Dongfeng Road, Sichuan, Chengdu Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |