CN101749267A - Spent fuel water tank cooling pump of pressure water reactor nuclear power plant - Google Patents
Spent fuel water tank cooling pump of pressure water reactor nuclear power plant Download PDFInfo
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- CN101749267A CN101749267A CN200810229287A CN200810229287A CN101749267A CN 101749267 A CN101749267 A CN 101749267A CN 200810229287 A CN200810229287 A CN 200810229287A CN 200810229287 A CN200810229287 A CN 200810229287A CN 101749267 A CN101749267 A CN 101749267A
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- impeller
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- bearing
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Abstract
The invention relates to a spent fuel water tank cooling pump of a pressure water reactor nuclear power plant, which comprises a pump body, an impeller nut, an impeller, a pump cover, a pump shaft, a rolling bearing and a bearing frame, wherein a mechanical oil seal is arranged between a front bearing press cover, a back bearing press cover and the pump shaft, a chuck arranged between the impeller and the impeller nut is fixed in key grooves of the impeller and the pump shaft through pins, the chuck and the impeller nut are fixed through convex teeth, and in addition, grooves and O-shaped sealing rings are respectively arranged between the chuck and the matched end surface of the impeller and between the chuck and the matched end surface of the impeller nut. Support legs of the bearing frame adopt an integral casting method, wherein two rib plates are vertical to the axial line direction and respectively extend to the position of the bearing and the position of an oil tank, and the other two rib plates are parallel to the axial line and both extend to the position of the outer wall of the oil tank. The invention has the characteristics of convenient installation and maintenance, good sealing effect, safe and stable equipment operation, long service life, good vibration resistance performance and the like.
Description
Affiliated technical field the present invention relates to a kind of coolant pump equipment, particularly a kind of spent fuel water tank cooling pump of pressure water reactor nuclear power plant that is applicable to running in the nuclear power station.
Background technique is present, there is following shortcoming in the widely used spentnuclear fuel tank cooling pump of pressure of domestic pressurized-water reactor nuclear power plant: because the structure that the bearing protection structure adopts bearing gland and dustproof dish to match, can not effectively prevent oil leakage, the cleaning environment of nuclear power generating equipment can't effectively be ensured.Between impeller and impeller nut, adopt one deck " O " RunddichtringO structure, little to the Security of impeller hub sealing; Because impeller nut does not have anti-loose structure, when reversing, impeller can not form effective protection, simultaneously so there is potential safety hazard to the loosening of impeller nut.The bearing bracket stand leg is an adjustable structure, can't satisfy shockproof requirements in running.
Summary of the invention the object of the present invention is to provide the spent fuel water tank cooling pump of pressure water reactor nuclear power plant of a kind of good sealing effect, device security running.
For achieving the above object, spent fuel water tank cooling pump of pressure water reactor nuclear power plant of the present invention comprises the pump housing, impeller nut, impeller, pump cover, pump shaft, rolling bearing, bearing bracket stand, is provided with mechanical oil sealing between front and back bearings gland and pump shaft; Be arranged at chuck between impeller and the impeller nut by dowel fixes in the keyway of impeller and pump shaft, fix by double wedge between chuck and the impeller nut; And chuck is provided with groove and " O " RunddichtringO respectively with between end face that impeller, impeller nut match.The leg of bearing bracket stand adopts the cast inblock mode, and wherein two gussets and axial direction are perpendicular, extend to rear bearing place and fuel tank place respectively; Two other gusset and parallel axes all extend to fuel tank outer wall place.
After adopting said structure,, solved the oil leakage problem effectively owing to adopt the stable mechanical oil sealing of performance structure.Change the mounting structure of impeller nut, set up anti-loose structure, improved the Security and the reliability of equipment operation.Strengthen the shock resistance of the pump housing simultaneously, can satisfy the job requirement of existing nuclear power station.
Advantage of the present invention is: installation and maintenance convenience, good sealing effect, safe and stable equipment operation, long service life, anti-seismic performance is good.
Description of drawings Fig. 1 is the overall structure schematic representation of spent fuel water tank cooling pump of pressure water reactor nuclear power plant of the present invention.
Embodiment is described further spent fuel water tank cooling pump of pressure water reactor nuclear power plant of the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, spent fuel water tank cooling pump of pressure water reactor nuclear power plant of the present invention, the pump housing 1 is arranged, impeller nut 2, chuck 4, impeller 7, pump cover 8, pump shaft 15, bearing gland 13 and 18, front roll bearing 14 and rear rolling bearing 17, bearing bracket stand 16, wherein the pump shaft 15 that can link to each other with motor passes bearing bracket stand 16 successively, pump cover 8, front end links to each other with impeller 7, have in the chamber between the bearing bracket stand of lubricant oil and the pump shaft front roll bearing 14 and two rear rolling bearings 17 are installed, all be equipped with at the position corresponding and be fixed on bearing bracket stand go forward bearing gland 13 and rear bearing gland 18 with bearing, front and back bearings gland 13 and 18 and pump shaft 15 between mechanical oil sealing 12 is installed; Bearing bracket stand is fixed on the pump housing 1 by fastening piece, in the pump cover side of bearing bracket stand mechanical seal parts 11 is installed.Be installed in the protective shaft sleeve 10 on the pump shaft, be processed with groove structure, " O " RunddichtringO 9 is installed between the two with the impeller hub end face corresponding with it.The chuck 4 that is installed between impeller 7 and the impeller nut 2 is fixed in the keyway of impeller 7 and pump shaft 15 by pin 6, fixes by double wedge between chuck 4 and the impeller nut 2; And chuck is processed with groove and " O " RunddichtringO 3,5 is installed respectively with between end face that impeller 7, impeller nut 2 match.The leg of bearing bracket stand 16 adopts the cast inblock mode, and wherein two gusset 16-1,16-2 and axial direction are perpendicular, extend to rear bearing place and fuel tank 19 places respectively; Two other gusset and parallel axes all extend to fuel tank outer wall place.
Owing to adopt the stable mechanical oil sealing of performance structure, solved the oil leakage problem effectively.Change the mounting structure of impeller nut, adopted multi-layer sealedly, improved sealing effect; Set up anti-loose structure, improved the Security and the reliability of equipment operation.Increase the shock resistance structure of the pump housing, can satisfy the job requirement of existing nuclear power station.
The characteristics such as the present invention has installation and maintenance convenience, good sealing effect, safe and stable equipment operation, long service life, and anti-seismic performance is good.
Claims (1)
1. spent fuel water tank cooling pump of pressure water reactor nuclear power plant, comprise the pump housing (1), impeller nut (2), impeller (7), pump cover (8), pump shaft (15), rolling bearing (14) and (17), bearing bracket stand (16), it is characterized in that: between front and back bearings gland (13) and (18) and pump shaft (15), be provided with mechanical oil sealing (12); The chuck (4) that is arranged between impeller (7) and the impeller nut (2) is fixed in the keyway of impeller (7) and pump shaft (15) by pin (6), fixes by double wedge between chuck (4) and the impeller nut (2); And chuck is provided with groove and " O " RunddichtringO (3), (5) respectively with between end face that impeller (7), impeller nut (2) match, the leg of bearing bracket stand (16) adopts the cast inblock mode, wherein two gussets and axial direction are perpendicular, extend to rear bearing place and fuel tank place respectively; Two other gusset and parallel axes all extend to fuel tank outer wall place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229287A CN101749267A (en) | 2008-11-30 | 2008-11-30 | Spent fuel water tank cooling pump of pressure water reactor nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229287A CN101749267A (en) | 2008-11-30 | 2008-11-30 | Spent fuel water tank cooling pump of pressure water reactor nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749267A true CN101749267A (en) | 2010-06-23 |
Family
ID=42476742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810229287A Pending CN101749267A (en) | 2008-11-30 | 2008-11-30 | Spent fuel water tank cooling pump of pressure water reactor nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749267A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116320A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN102146935A (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Essential service water pump for nuclear power station |
| CN102852820A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious sand pump capable of being idled and connected in series |
| CN103573692A (en) * | 2013-11-01 | 2014-02-12 | 江苏大学 | Impeller and guide vane structure of multi-stage self-priming centrifugal pump |
| CN103821755A (en) * | 2014-03-06 | 2014-05-28 | 大连深蓝泵业有限公司 | Normal afterheat discharging pump for third-generation AP1000 advanced pressurized water reactor nuclear power station |
| CN104314828A (en) * | 2014-09-19 | 2015-01-28 | 安徽金龙机械有限公司 | Chemical process pump |
| CN110325744A (en) * | 2017-02-28 | 2019-10-11 | 株式会社荏原制作所 | The maintaining method of pump installation and pump installation |
-
2008
- 2008-11-30 CN CN200810229287A patent/CN101749267A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116320A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN102146935A (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Essential service water pump for nuclear power station |
| CN102852820A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious sand pump capable of being idled and connected in series |
| CN102852820B (en) * | 2011-06-27 | 2016-01-20 | 王喜冬 | Cemented carbide idle running can be connected amphibious husky pump |
| CN103573692A (en) * | 2013-11-01 | 2014-02-12 | 江苏大学 | Impeller and guide vane structure of multi-stage self-priming centrifugal pump |
| CN103573692B (en) * | 2013-11-01 | 2016-03-23 | 江苏大学 | A kind of Multifunctional self sucking centrifugal pump impeller vane structure |
| CN103821755A (en) * | 2014-03-06 | 2014-05-28 | 大连深蓝泵业有限公司 | Normal afterheat discharging pump for third-generation AP1000 advanced pressurized water reactor nuclear power station |
| CN104314828A (en) * | 2014-09-19 | 2015-01-28 | 安徽金龙机械有限公司 | Chemical process pump |
| CN110325744A (en) * | 2017-02-28 | 2019-10-11 | 株式会社荏原制作所 | The maintaining method of pump installation and pump installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100623 |