CN203848709U - Dual-backpressure condenser water chamber communication pipe structure of large-size thermal power plant - Google Patents
Dual-backpressure condenser water chamber communication pipe structure of large-size thermal power plant Download PDFInfo
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- CN203848709U CN203848709U CN201420281551.5U CN201420281551U CN203848709U CN 203848709 U CN203848709 U CN 203848709U CN 201420281551 U CN201420281551 U CN 201420281551U CN 203848709 U CN203848709 U CN 203848709U
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- communication pipe
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Abstract
A dual-backpressure condenser water chamber communication pipe structure of a large-size thermal power plant comprises a communication pipe body which is horizontally arranged in a straight through mode, and a low flow resistance casing pipe is perpendicularly arranged on the communication pipe body. Through the utilization of the dual-backpressure condenser water chamber communication pipe structure of the large-size thermal power plant, the straight through connection of a dual-backpressure condenser water chamber communication pipe is achieved, the original design mode that the communication pipe winds around a turbine platform column is optimized, the design of the communication pipe is optimized, the length of the communication pipe and the area occupied for arranging the communication pipe are reduced, and the consumed materials of the communication pipe for each unit can be saved by around 30 t; meanwhile, the circulating water communication pipe flow resistance is lowered by more than 80 percent, and 30*104 kWh plant power is saved each year.
Description
Technical field
The utility model design belongs to large-size thermal power plant design field, relates to a kind of large-size thermal power plant double pressure condenser hydroecium communicating tube structure.
Background technology
Double pressure condenser is the conventional condensing equipment of large turbo-type generator group, its hydroecium communicating pipe is because caliber is large, so take up an area more while arranging, be generally hydroecium communicating pipe between two or more condensers and avoid turbine block pillar, need to walk around pillar be circular layout (referring to Fig. 1).Like this, not only make communicating pipe pipeline long, take more factory building arrangement areas, and due to the needs pillar that detours, thereby cause local resistance to strengthen, and tend to cause circulating pump head to promote, strengthen operation power consumption, service life communicating pipe is short; And while detouring pillar communicating pipe, need to use eight 90 ° of weld ells, manufacturing cost is higher.
In prior art, every 600MW unit, by DN2220 communicating pipe 65m (containing 8 elbows), needs the about 49.35t of steel.And after use the utility model, every unit, by DN2440 communicating pipe 22m (containing 2 elbows), needs the about 18.22t of steel, add two casing wt 1.38t, total weight is 19.6t.Every unit can be saved steel 49.35-19.6=29.75t, every unit communicating pipe prioritization scheme can save the about 30t of steel.
Use the utility model, due to communicating pipe length minimizing, saved communicating pipe and arranged floor space, be conducive to the integral arrangement of steam turbine building.
Utility model content
The technical problems to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, provide a kind of and be conducive to reduce communicating pipe local resistance, and the large-size thermal power plant double pressure condenser hydroecium communicating tube structure of long service life.
A large-size thermal power plant double pressure condenser hydroecium communicating tube structure, comprises communicating pipe body, the straight-through layout of described communicating pipe body level, communicating pipe body be provided with vertically arranged low flow resistance sleeve pipe.
Further, it is wing, circular or oval that the cross section of described low flow resistance sleeve pipe can be, preferably oval.When casing profile is wing, flow resistance is little, but relative length longer dimension, processed complex; When casing profile is circular, although processing is simple, take communicating pipe flow area larger, so flow resistance is also relatively large; When casing profile is oval, easy to process, and flow resistance is less.
Further, the beeline between the internal face of described low flow resistance sleeve pipe and the incline of steel column is 7-14mm, preferably 10mm.
Further, the height value of described low flow resistance sleeve pipe is than the large 12-18mm of external diameter of communicating pipe body, and preferred 15mm, to facilitate welding.
Further, the inside nominal diameter of described communicating pipe can be enlarged to DN2440mm by original DN2220mm.
Before using the utility model, in turbine block pillar both sides, also stiffener can be set, to strengthen turbine block pillar in the moment of inertia of short-axis direction.
Use the utility model, realized straight-through connection of double pressure condenser hydroecium communicating pipe, double pressure condenser communicating pipe can directly be passed turbine block pillar, and turbine block pillar is placed in low flow resistance sleeve pipe, and communicating pipe is by low flow resistance casing off turbine block pillar.Like this, be not only conducive to reduce the length of communicating pipe, be only existing communicating pipe length 34%, save communicating pipe material consumption and floor space; Also help the usage quantity that reduces by 90 ° of weld ells, 90 ° of weld ell quantity are reduced to two by eight, only need 90 ° of weld ells be set respectively in communicating pipe inlet and outlet.And the inside nominal diameter of communicating pipe can be enlarged to DN2440mm by original DN2220mm, is beneficial to reduce recirculated water flow velocity, and recirculated water flow velocity can be reduced to 1.95m/s from original 2.23m/s.Due to the existence of low flow resistance sleeve pipe, communicating pipe local resistance can reduce more than 80%.In addition, use the utility model, also help and reduce water circulating pump power 60kW, year saving station service 30 * 10
4kWh, little power consumption.
Accompanying drawing explanation
Fig. 1 is existing communicating pipe and turbine block pillar arrangement top view;
Fig. 2 is the utility model communicating pipe and turbine block pillar arrangement top view;
Fig. 3 is the partial enlarged drawing of communicating pipe shown in Fig. 2 and turbine block pillar arrangement;
Fig. 4 is communicating pipe and turbine block pillar arrangement stereogram.
The specific embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
Embodiment 1:
With reference to Fig. 2, Fig. 3 and Fig. 4, a kind of large-size thermal power plant double pressure condenser hydroecium communicating tube structure, comprises communicating pipe body 1, the straight-through layout of described communicating pipe body 1 level, communicating pipe body 1 be provided with vertically arranged low flow resistance sleeve pipe 2.
The cross section of low flow resistance sleeve pipe is oval.
Beeline between the internal face of low flow resistance sleeve pipe and the incline of steel column is 10mm.
The height value of oval low flow resistance sleeve pipe is than the large 15mm of external diameter of communicating pipe body, to facilitate welding.
Communicating pipe, body 1 inside nominal diameter was enlarged to DN2440mm by original DN2220mm, to reduce recirculated water flow velocity.
Before using the utility model, in turbine block pillar 3 both sides, also stiffener 4 can be set, to strengthen turbine block pillar 3 in the moment of inertia of short-axis direction.
Use the utility model, realized straight-through connection of double pressure condenser hydroecium communicating pipe, double pressure condenser communicating pipe, turbine block pillar was placed in oval low flow resistance sleeve pipe directly through turbine block pillar, and communicating pipe is by oval low flow resistance casing off turbine block pillar.
The utility model compared with prior art, communicating pipe flow resistance at least can reduce by 0.289 mH
2o, mean resistance reduces approximately 80%, good energy-conserving effect.
By resistance, at least reduce 0.289mH
2the conservative estimation of O, is equivalent to every external unit water circulating pump shaft power of communicating pipe and reduces about 60(kW), by unit annual utilization hours 5000h, can save station service 30 * 10 every year
4kWh.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is:
The cross section of described low flow resistance sleeve pipe is wing.
Beeline between the internal face of described low flow resistance sleeve pipe and the incline of steel column is 8mm.
The height value of described low flow resistance sleeve pipe is than the large 12mm of external diameter of communicating pipe body.
All the other are with embodiment 1.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is:
The cross section of described low flow resistance sleeve pipe is circular.
Beeline between the internal face of described low flow resistance sleeve pipe and the incline of steel column is 13mm.
The height value of described low flow resistance sleeve pipe is than the large 18mm of external diameter of communicating pipe body.
All the other are with embodiment 1.
Claims (7)
1. a large-size thermal power plant double pressure condenser hydroecium communicating tube structure, comprises communicating pipe body, it is characterized in that, the straight-through layout of described communicating pipe body level, communicating pipe body be provided with vertically arranged low flow resistance sleeve pipe.
2. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 1, is characterized in that, the cross section of described low flow resistance sleeve pipe is wing, circular or oval.
3. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 1 and 2, is characterized in that, the beeline between the internal face of described low flow resistance sleeve pipe and the incline of steel column is 7-14mm.
4. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 3, is characterized in that, the beeline between the internal face of described low flow resistance sleeve pipe and the incline of steel column is 10mm.
5. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 1 and 2, is characterized in that, the height value of described low flow resistance sleeve pipe is than the large 12-18mm of external diameter of communicating pipe body.
6. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 5, is characterized in that, the height value of described low flow resistance sleeve pipe is than the large 15mm of external diameter of communicating pipe body.
7. large-size thermal power plant double pressure condenser hydroecium communicating tube structure according to claim 1 and 2, is characterized in that, the inside nominal diameter of described communicating pipe is DN2440mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281551.5U CN203848709U (en) | 2014-05-29 | 2014-05-29 | Dual-backpressure condenser water chamber communication pipe structure of large-size thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281551.5U CN203848709U (en) | 2014-05-29 | 2014-05-29 | Dual-backpressure condenser water chamber communication pipe structure of large-size thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848709U true CN203848709U (en) | 2014-09-24 |
Family
ID=51561716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420281551.5U Expired - Fee Related CN203848709U (en) | 2014-05-29 | 2014-05-29 | Dual-backpressure condenser water chamber communication pipe structure of large-size thermal power plant |
Country Status (1)
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| CN (1) | CN203848709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813511A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | A kind of pair of back pressure, double-flow condenser seawater communicating pipe |
| CN107524484A (en) * | 2017-08-11 | 2017-12-29 | 上海电气电站设备有限公司 | The low flow resistance double pressure condenser of hydroecium among a kind of merging |
-
2014
- 2014-05-29 CN CN201420281551.5U patent/CN203848709U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813511A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | A kind of pair of back pressure, double-flow condenser seawater communicating pipe |
| CN107524484A (en) * | 2017-08-11 | 2017-12-29 | 上海电气电站设备有限公司 | The low flow resistance double pressure condenser of hydroecium among a kind of merging |
| CN107524484B (en) * | 2017-08-11 | 2019-07-23 | 上海电气电站设备有限公司 | A kind of low flow resistance double pressure condenser of merging centre water chamber |
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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: CHINA ENERGY ENGINEERING GROUP HUNAN ELECTRIC POWE Free format text: FORMER NAME: HUNAN ELECTRIC POWER PROSPECTING DESIGN INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410007 No. 471 West labour Road, Hunan, Changsha Patentee after: HUNAN ELECTRIC POWER DESIGN INSTITUTE OF CHINA ENERGY EGINEERING Corp.,Ltd. Address before: 410007 No. 471 West labour Road, Hunan, Changsha Patentee before: Hunan Electric Power Design Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 |