CN202431031U - Low-position layout structure for steam feed pump of large fuel electric plant - Google Patents
Low-position layout structure for steam feed pump of large fuel electric plant Download PDFInfo
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- CN202431031U CN202431031U CN201220031708XU CN201220031708U CN202431031U CN 202431031 U CN202431031 U CN 202431031U CN 201220031708X U CN201220031708X U CN 201220031708XU CN 201220031708 U CN201220031708 U CN 201220031708U CN 202431031 U CN202431031 U CN 202431031U
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- 239000000446 fuel Substances 0.000 title abstract 2
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 235000011470 Adenanthera pavonina Nutrition 0.000 description 1
- 241000428378 Lopa Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
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Abstract
A low-position layout structure for a steam feed pump of a large fuel electric plant is characterized in that a front-mounted pump and a main pump of a steam feed pump unit are arranged in a zero-meter layer of a deoxidization chamber and are in driving connection with a feed pump steam turbine respectively; and a steam exhaust port of the feed pump steam turbine is connected up to a main condenser. The utility model has the advantages of two conventional layout schemes, not only is the auxiliary power ratio reduced, and the economical efficiency of operation is good, but also the arrangement height of a deaerator is not required to increased; and in addition, the steam feed pump unit is arranged in the zero-meter layer of the deoxidization chamber, so that the span of a steam room can be reduced by about 3 meters, that is, the span is optimized from 31.5 meters of the original design to 28.5 meters, further, the volume of a main power house is reduced by 20,000 m<3>, and then the economic benefits are remarkable.
Description
Technical field
What the present invention relates to is the steam feed pump low level arrangement of 300MW and above large-size thermal power plant, belongs to the steam power station design field.
Background technology
Steam power station 1000MW unit 2 * 50% capacity steam feed pump group fore pump arrangements mainly contain two kinds at present, and a kind of is the disalignment steam feed pump, and promptly the fore pump of steam feed pump group is arranged in the 0m layer, with independent motor driven; Another kind is coaxial steam feed pump group, and promptly the fore pump of steam feed pump group and main pump are arranged in the running layer with layer, all utilizes feed pump turbine to drive.The advantage of first kind of scheme is that fore pump arranges that absolute altitude is low, absolute altitude that can corresponding reduction oxygen-eliminating device, and shortcoming then is to increase station service power consumption rate, performance driving economy is poor.The advantage of second kind of scheme is to reduce station service power consumption rate, and performance driving economy is good.Every unit station service can reduce 1360KW, amount to and save 3,000,000 yuan of annual operating costs, but coal consumption simultaneously will increase 0.39g/KW.h, and amounting to increases by 1,720,000 yuan of annual running costs approximately, and actual total annual operating cost can reduce by 1,280,000 yuan.But it is high that shortcoming is the fore pump position, and the absolute altitude of corresponding reduction oxygen-eliminating device also must be raised about 13 meters, corresponding main building volume increase～13000m3, and by 300 yuan of calculating of every cubic metre of volume, two unit gross investments increase by 3,900,000 yuan; Two kinds of arrangements respectively have pluses and minuses.
Summary of the invention
The objective of the invention is to be to overcome the deficiency that prior art exists, and a kind of steam feed pump low level arrangement of the large-size thermal power plant that on the basis of two kinds of arrangements of prior art, forms is provided.
The objective of the invention is to accomplish through following technical scheme; This arrangement is: the fore pump of steam feed pump group and main pump are arranged in 0 meter layer of deaerator bay with layer; And said fore pump drives with feed pump turbine respectively with main pump and links to each other, and the steam discharge interface of said feed pump turbine upwards is connected to main condenser.
The present invention has had the advantage of two kinds of conventional arrangements of prior art concurrently, has both reduced station service power consumption rate, has good performance driving economy, simultaneously also need oxygen-eliminating device not arranged that absolute altitude raises.And; Owing to the steam feed pump group is arranged in 0 meter layer of deaerator bay; Just can reduce about 3 meters of the span of steam turbine building, be optimized to 28.5 meters by intrinsic 31.5 meters, further reduce main building volume～20000m3; By 300 yuan of calculating of every cubic metre of volume, two unit gross investments can be practiced thrift 6,000,000 yuan.Three kinds of scheme expenses relatively see the following form:
Description of drawings
Fig. 1 is a steam feed pump low level arrangement sketch map of the present invention.
The specific embodiment
To combine accompanying drawing that the present invention is done detailed introduction below: shown in Figure 1; Arrangement of the present invention is: the fore pump of steam feed pump group and main pump 1 are arranged in 0 meter layer of deaerator bay with layer; And said fore pump drives with feed pump turbine 2 respectively with main pump 1 and links to each other, and the steam discharge interface of said feed pump turbine 2 upwards is connected to main condenser 3.
Upwards steam discharge of the present invention is furnished with strict requirement to feed pump turbine axle envelope, oil return pipe, hydrophobic etc.; Warp repeatedly exchanges with Hangzhoupro vapour, eastern vapour, factory of Shanghai Automobile Factory; Sum up if with Equipment Foundations be lifted to that about 1～2m arranges on the ground, enough big drain port be set on the exhaust casing, grease-box is arranged in zero meter and just can properly settles this type problem; And part 300MW units such as domestic existing Zou County, Huaiyin, Lopa Nationality sulphur, packet header, Nantong adopt little steam turbine of steam discharge and operational excellence on 100% capacity at present; The little steam turbine of steam discharge was supplied on east vapour oozed northern three phase projects in the Huaneng Group; There is the little steam turbine order of steam discharge achievement on three phase of Nantong, the Huaneng Group project in Shanghai Automobile Factory; Hangzhoupro vapour also has each four of the U.S. and Korea S, state's electricity cloth to connect the little steam turbine order of steam discharge achievement on 660MW ultra supercritical 100% capacity, and therefore the little steam turbine exhaust mode that makes progress is a mature and reliable.But steam feed pump group low level arrangement is hydrophobic at feed pump turbine, and the design of lubricating oil return and maintenance lifting will be noted.
1. ensure to the discrepancy in elevation between the hydrophobic collector of water pump turbine body and associated conduit and condenser, make hydrophobicly can get into the condenser draining system smoothly.The water level of general requirements condenser dewatering capacity-enlarging device or hot well is lower than about 1 meter of feed pump turbine inner casing minimum point, otherwise is easy to generate hydrophobic not smooth problem.This engineering feed pump turbine exhaust casing drain port is a minimum point, and absolute altitude is 2.038m, and this interface absolute altitude of condenser dewatering capacity-enlarging device is 0.98m, and hydrophobic difference in height is about 2.038-0.98=1.058m.
2. the feed pump turbine fuel tank arranges that near the steam feed pump group its absolute altitude is lower than the installation absolute altitude of steam feed pump group so that produce the water level discrepancy in elevation, makes oil return flow into fuel tank by deadweight smoothly to reduce the return line resistance.This engineering feed pump fuel tank leans near two feed pump turbines under being arranged in the B colonnade.The about 1.65m of the absolute altitude of tank drainback mouth, feed pump turbine center line absolute altitude 3.396m.The oil return difference in height is about 3.396-1.65=1.746m.
3. conventional steam feed pump group is arranged in the scheme of steam turbine building running layer and can utilizes the steam turbine building driving to realize installation, the maintenance lifting of steam feed pump group.Fore pump and main pump with the steam feed pump group is arranged in 0 meter layer of deaerator bay with layer now; Then can't utilize the steam turbine building driving again; Therefore our the deaerator bay intermediate layer (7.1 meters) above the steam feed pump group has been designed and has enough been satisfied the perforate that the maintenance lifting is installed; And below deaerator bay running layer (15.5 meters) Vierendeel girder, designed track and electric block, realize installation, the maintenance lifting of steam feed pump group.
Can guarantee that through above design the postpone of steam feed pump group low level cloth moves safely and reliably, simultaneously can practice thrift a large amount of initial costs and operating cost, be worth in the design of from now on large-size thermal power plant, extensively adopting.
Claims (1)
1. the steam feed pump low level arrangement of a large-size thermal power plant; It is characterized in that this arrangement is: the fore pump of steam feed pump group and main pump are arranged in 0 meter layer of deaerator bay with layer; And said fore pump drives with feed pump turbine respectively with main pump and links to each other, and the steam discharge interface of said feed pump turbine upwards is connected to main condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220031708XU CN202431031U (en) | 2012-02-01 | 2012-02-01 | Low-position layout structure for steam feed pump of large fuel electric plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220031708XU CN202431031U (en) | 2012-02-01 | 2012-02-01 | Low-position layout structure for steam feed pump of large fuel electric plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431031U true CN202431031U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220031708XU Expired - Lifetime CN202431031U (en) | 2012-02-01 | 2012-02-01 | Low-position layout structure for steam feed pump of large fuel electric plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821574A (en) * | 2014-03-14 | 2014-05-28 | 中国电力工程顾问集团华东电力设计院 | Single reheat pressurizing steam turbine thermodynamic system |
| CN105155880A (en) * | 2014-12-29 | 2015-12-16 | 浙江省电力设计院 | One-supporting-one multi-axis combined cycle thermal generator set combined workshop low-position arrangement structure |
| CN105179030A (en) * | 2015-08-28 | 2015-12-23 | 杭州汽轮机股份有限公司 | Upward exhaust type welded turbine condensing exhaust hood |
| CN105822098A (en) * | 2015-11-26 | 2016-08-03 | 中国能源建设集团浙江省电力设计院有限公司 | Power island arrangement structure of one-driving-one multi-shaft gas turbine extraction condensing backpressure unit combined cycle power plant |
-
2012
- 2012-02-01 CN CN201220031708XU patent/CN202431031U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821574A (en) * | 2014-03-14 | 2014-05-28 | 中国电力工程顾问集团华东电力设计院 | Single reheat pressurizing steam turbine thermodynamic system |
| CN103821574B (en) * | 2014-03-14 | 2016-05-18 | 中国电力工程顾问集团华东电力设计院有限公司 | Single reheat supercharging steam turbine therrmodynamic system |
| CN105155880A (en) * | 2014-12-29 | 2015-12-16 | 浙江省电力设计院 | One-supporting-one multi-axis combined cycle thermal generator set combined workshop low-position arrangement structure |
| CN105179030A (en) * | 2015-08-28 | 2015-12-23 | 杭州汽轮机股份有限公司 | Upward exhaust type welded turbine condensing exhaust hood |
| CN105822098A (en) * | 2015-11-26 | 2016-08-03 | 中国能源建设集团浙江省电力设计院有限公司 | Power island arrangement structure of one-driving-one multi-shaft gas turbine extraction condensing backpressure unit combined cycle power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUANENG POWER INTERNATIONAL, INC. Effective date: 20141205 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qian Haiping Inventor after: Xu Hongbo Inventor after: Guang Xu Inventor after: Ding Yanxiang Inventor after: Zhang Weiling Inventor after: Zhou Yinfang Inventor after: Ren Yuanyuan Inventor after: Zhang Youxin Inventor after: Shi Weidong Inventor before: Qian Haiping Inventor before: Xu Hongbo Inventor before: Guang Xu Inventor before: Ding Yanxiang Inventor before: Zhang Weiling Inventor before: Zhou Yinfang Inventor before: Ren Yuanyuan |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: QIAN HAIPING XU HONGBO GUANG XU DING YANXIANG ZHANG WEILING ZHOU YINFANG REN YUANYUAN TO: QIAN HAIPING XU HONGBO GUANG XU DING YANXIANG ZHANG WEILING ZHOU YINFANG REN YUANYUAN ZHANG YOUXIN SHI WEIDONG |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141205 Address after: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee after: Zhejiang Electric Power Design Inst. Patentee after: Huaneng Power International,Inc. Address before: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee before: Zhejiang Electric Power Design Inst. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee after: CHINA ENERGY ENGINEERING GROUP ZHEJIANG ELETERIC POWER DESIGN INSTITUTE Co.,Ltd. Patentee after: Huaneng Power International,Inc. Address before: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee before: Zhejiang Electric Power Design Inst. Patentee before: Huaneng Power International,Inc. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |