CN203384088U - Connecting structure for pump shaft and impeller of concrete volute pump of nuclear power plant - Google Patents
Connecting structure for pump shaft and impeller of concrete volute pump of nuclear power plant Download PDFInfo
- Publication number
- CN203384088U CN203384088U CN201320392381.3U CN201320392381U CN203384088U CN 203384088 U CN203384088 U CN 203384088U CN 201320392381 U CN201320392381 U CN 201320392381U CN 203384088 U CN203384088 U CN 203384088U
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- impeller
- pump
- pump shaft
- nuclear power
- power plant
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Abstract
The utility model belongs to structural design technology of concrete volute pumps, and particularly relates to a connecting structure for a pump shaft and an impeller of a concrete volute pump of a nuclear power plant. One end of the pump shaft connected with the impeller is in a flange form, a screw hole matched with a shaft end flange of the pump shaft is formed in a connecting surface of the impeller, the shaft end flange and the impeller are connected together by the aid of a bolt and a pin, the pin bears torque, and the connecting bolt bears the axial thrust of a water pump and the weight of the impeller. The operational stability of equipment is improved, and the connecting structure is more convenient to manufacture, disassemble, assemble and maintain as compared with a traditional spline joint mode.
Description
Technical field
The utility model belongs to concrete spiral casing pump structure designing technique, is specifically related to the linkage structure of a kind of nuclear power plant concrete spiral casing pump pump shaft and impeller.
Background technique
Nuclear power plant's concrete spiral casing pump is that the capital equipment of cooling water is provided for the steam turbine factory building, and nuclear power plant is generated electricity at full capacity and plays vital effect, and can it steady in a long-termly move the economic benefit that directly affects nuclear power plant.
The flow parameter of nuclear power plant's concrete spiral casing pump is many at 25m
3/ s～33m
3/ s scope.Impeller is as the hydraulic part of concrete spiral casing pump, and by the Energy Transfer of motor, to fluid, for the liquid of flow greatly like this is raised up to specified altitude, impeller size is very large, and diameter is between Φ 2700mm～Φ 3000mm, and weight reaches the 10000kg left and right.Nuclear power plant's concrete spiral casing pump carries fluid mostly to be seawater, and for preventing seawater corrosion, impeller material adopts two phase stainless steel.Pump shaft is the carbon steel materials that adopt more, and the axle sleeve of outer coating stainless steel material is to prevent corrosion, and the diameter of axle is between Φ 350mm～Φ 400mm.
Concrete spiral casing pump in the past, comprise other water pump, and impeller and the form that adopts impeller nut or keyway being connected of pump shaft, be fixed on axle head by impeller nut or keyway by impeller more.For large pump, operation stability is vital.
The model utility content
The purpose of this utility model is to provide the new Joining Structure between a kind of nuclear power plant concrete spiral casing pump pump shaft and impeller, to guarantee the stability of concrete spiral casing pump operation, and is easy for installation and maintenance.
The technical solution of the utility model is as follows: the linkage structure of a kind of nuclear power plant concrete spiral casing pump pump shaft and impeller, the end that pump shaft is connected with impeller is form of flanges, the junction surface of impeller is provided with the screw suitable with the boss of pump shaft, by bolt and pin, boss and impeller is linked together.
Further, the linkage structure of nuclear power plant as above concrete spiral casing pump pump shaft and impeller, wherein, the end that pump shaft is connected with gear-box is the cylinder axle head, by the keyway mode, connects.
The beneficial effects of the utility model are as follows: concrete spiral casing pump pump shaft provided by the utility model and impeller adopt flange connection, bear moment of torsion by pin, bear water pump end thrust and impeller weight by connecting bolt, created a kind of novel pump shaft and impeller Placement.Pump shaft and impeller adopt flange connection, improve pump operation stability, make the equipment and system operation more reliable.The Placement of this pump shaft and impeller is applicable to the concrete spiral casing pump of all size, especially the large-sized concrete volute pump is had more to advantage, can be applied to the above nuclear power generating sets of gigawatt.
The accompanying drawing explanation
The linkage structure schematic diagram that Fig. 1 is the utility model pump shaft and impeller.
In figure, 1. pump shaft; 2. impeller; 3. pin and bolt.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model is connected concrete spiral casing pump pump shaft 1 end with impeller 2 is designed to form of flanges, the junction surface of impeller 2 is provided with the screw suitable with the boss of pump shaft, use bolt and pin 3 that boss and impeller are linked together, allow pin bear moment of torsion, allow connecting bolt bear water pump end thrust and impeller weight.The end that Pump Axle is connected with gear-box is still the cylinder axle head, adopts the keyway Placement, and as rotor part, the centering end is installed.
When the concrete spiral casing pump is installed, first adopt pin to be connected with bolt in the boss of pump shaft and impeller, form pump shaft-impeller assembly, Integral lifting.The horizontal adjustemt of pump shaft-impeller assembly completes by the pad between wear ring under water pump; The Vertical direction centering of pump shaft-impeller assembly completes by the cylinder axle head, tolerance≤0.05mm/m.
Impeller adopts flange to be connected with pump shaft, not only improves stable equipment operation, and compares the manufacturing of being more convenient for, dismounting and maintenance with the keyway Placement.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (2)
1. the linkage structure of nuclear power plant's concrete spiral casing pump pump shaft and impeller, it is characterized in that: the end that pump shaft (1) is connected with impeller (2) is form of flanges, the junction surface of impeller (2) is provided with the screw suitable with the boss of pump shaft (1), by bolt and pin (3), boss and impeller is linked together.
2. the linkage structure of nuclear power plant as claimed in claim 1 concrete spiral casing pump pump shaft and impeller, it is characterized in that: the end that pump shaft is connected with gear-box is the cylinder axle head, by the keyway mode, connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320392381.3U CN203384088U (en) | 2013-07-03 | 2013-07-03 | Connecting structure for pump shaft and impeller of concrete volute pump of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320392381.3U CN203384088U (en) | 2013-07-03 | 2013-07-03 | Connecting structure for pump shaft and impeller of concrete volute pump of nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384088U true CN203384088U (en) | 2014-01-08 |
Family
ID=49872589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320392381.3U Expired - Lifetime CN203384088U (en) | 2013-07-03 | 2013-07-03 | Connecting structure for pump shaft and impeller of concrete volute pump of nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179271A (en) * | 2014-06-02 | 2015-12-23 | 依必安派特穆尔芬根股份有限公司 | Radial or diagonal ventilator |
| CN107743551A (en) * | 2015-06-12 | 2018-02-27 | 阿海珐核能公司 | Pump with loss prevention component |
-
2013
- 2013-07-03 CN CN201320392381.3U patent/CN203384088U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179271A (en) * | 2014-06-02 | 2015-12-23 | 依必安派特穆尔芬根股份有限公司 | Radial or diagonal ventilator |
| CN107743551A (en) * | 2015-06-12 | 2018-02-27 | 阿海珐核能公司 | Pump with loss prevention component |
| CN107743551B (en) * | 2015-06-12 | 2019-07-16 | 阿海珐核能公司 | Pump with loss prevention component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Haizhu Inventor after: Peng Chao Inventor after: Wang Donghai Inventor before: Li Haizhu Inventor before: Peng Chao Inventor before: Wang Dong |
|
| CB03 | Change of inventor or designer information | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI HAIZHU PENG CHAO WANG DONG TO: LI HAIZHU PENG CHAO WANG DONGHAI |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |