CN201368052Y - Boric acid transfer pump used in PWR nuclear power plant - Google Patents
Boric acid transfer pump used in PWR nuclear power plant Download PDFInfo
- Publication number
- CN201368052Y CN201368052Y CNU2008202203227U CN200820220322U CN201368052Y CN 201368052 Y CN201368052 Y CN 201368052Y CN U2008202203227 U CNU2008202203227 U CN U2008202203227U CN 200820220322 U CN200820220322 U CN 200820220322U CN 201368052 Y CN201368052 Y CN 201368052Y
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- CN
- China
- Prior art keywords
- impeller
- pump
- chuck
- flange neck
- bearing bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a boric acid transfer pump used in a PWR nuclear power plant, which comprises a pump body, an impeller nut, an impeller, a pump bonnet, a sealing component, a bearing bracket, a rolling beating and a pump shaft. Mechanical oil seals are additionally arranged between front and back bearing gland bushes and the pump shaft; a mechanical oil seal is arranged on the side of the bearing bracket on the pump body on which the pump bonnet is arranged; a chuck arranged between the impeller and the impeller nut is fixed in a key slot between the impeller and the pump shaft through a pin; the chuck and the impeller nut are fixed with each other through convex teeth; O-shaped seal rings are respectively arranged on the joint surface of the impeller nut and the chuck and the joint surface of the chuck and the impeller; each of the entrance flange neck and the exit flange neck of the pump body is provided with four reinforcing ribs which are perpendicular to each other; horizontal ribbed plates and one vertical rib plate at the entrance flange neck extend to the outer ring of the flange which connects the pump body with the bearing bracket, and the other vertical ribbed plate extends upward to the exit flange neck; one ribbed plate at the exit flange neck extends upward to the entrance flange neck; and the rest three ribbed plates all extend to the outer ring of the flange which connects the pump body with the bearing bracket.
Description
Affiliated technical field
The utility model relates to a kind of liquid delivery pump, especially a kind of pressurized-water reactor nuclear power plant boric acid transfer pump for the nuclear power station use.
Background technique
Can't satisfy the working environment requirement of nuclear power station at present as the common boric acid transfer pump of routine, tracing it to its cause, mainly there are the following problems: the intensity at pump case pressure-bearing position can not satisfy the shockproof requirements of working environment; The safeguard structure that pump body inner shaft holds is undesirable, is prone to the situation that oil leakage and extraneous medium immerse; Impeller nut does not have anti-loose structure, can not prevent that impeller from becoming flexible and guaranteeing the sealing of pump shaft.
Summary of the invention
The purpose of this utility model is to provide a kind of pressurized-water reactor nuclear power plant boric acid transfer pump that can satisfy nuclear power station working environment requirement stable performance, safety.
For achieving the above object, the utility model pressurized-water reactor nuclear power plant boric acid transfer pump comprises the pump housing, impeller nut, impeller, pump cover, sealed member, bearing bracket stand, rolling bearing, pump shaft, wherein between forward and backward bearing gland and pump shaft, set up mechanical oil sealing, the pump cover side that is fixed in the bearing bracket stand on the pump housing is provided with the mechanical seal parts, be socketed on the protective shaft sleeve of pump shaft and the impeller hub end face that is in contact with it between be provided with " O " RunddichtringO; 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; The fitting surface that reaches between chuck and the impeller between impeller nut and the chuck is respectively equipped with " O " RunddichtringO; Inlet outside the pump housing and outlet(discharge) flange neck place respectively establish four orthogonal stiffening ribs, wherein a gusset of the gusset of inlet flange neck place substantially horizontal and Vertical direction extends to the flange cylindrical place of the pump housing and bearing bracket stand connection, and another gusset on the Vertical direction extends upwardly to outlet(discharge) flange neck place; One gusset at outlet(discharge) flange neck place extends upwardly to outlet(discharge) flange neck place, and all the other tibet cinnamon bark plates all extend to the flange cylindrical place of the pump housing and bearing bracket stand connection.
After adopting said structure, owing to changed the sealing configuration that pump body inner shaft holds, can prevent from that lubricant oil in the bearing from overflowing with introduced contaminants to enter, improve its working life.Between impeller and impeller nut, set up chuck, avoided producing and become flexible, guaranteed the sealing of pump shaft again, prevent crevice corrosion.Respectively set up four stiffening ribs at neck flange place, pump housing entry and exit, to pump housing footing with and supporting surface carry out suitable reinforcement, satisfy its shockproof requirements.
Characteristics of the present utility model are: usability is stable, and is easy to maintenance, and whole shock resistance strengthens, and is applicable to the requirement of nuclear power station working environment.
Description of drawings
Fig. 1 is the whole subdivision structural representation of the utility model pressurized-water reactor nuclear power plant boric acid transfer pump.
The pump housing schematic appearance along Way in of Fig. 2 for showing as Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, 2, the utility model pressurized-water reactor nuclear power plant boric acid transfer pump has the pump housing 1, impeller nut 2, impeller 7, pump cover 8, sealed member 11, bearing bracket stand 13, rolling bearing 14, pump shaft 16, the pump shaft 16 that wherein links to each other with motor passes bearing bracket stand 13 successively, pump cover 8, front end links to each other with impeller 7.Be marked with in the chamber between the bearing bracket stand of lubricant oil and the pump shaft two rolling bearings 14 are installed, at bearing bracket stand and above-mentioned two rolling bearing corresponding parts bearing gland 15 is installed, between forward and backward bearing gland 15 and pump shaft 16, increase mechanical oil sealing 12 is installed, the pump cover side that is fixed in the bearing bracket stand 13 on the pump housing 1 by link is equipped with mechanical seal parts 11, be socketed on the protective shaft sleeve 10 of pump shaft and the impeller hub end face that is in contact with it between be provided with " O " RunddichtringO 9; The chuck 3 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 3 and the impeller nut 2; Fitting surface is respectively equipped with " O " RunddichtringO 4,5 between impeller nut and the chuck and between chuck and the impeller; Each fixed four orthogonal stiffening rib of inlet outside the pump housing 1 and outlet(discharge) flange neck place, wherein a gusset 1-4 of gusset 1-1, the 1-3 of the substantially horizontal at inlet flange neck place and Vertical direction extends to the flange cylindrical place of the pump housing and bearing bracket stand connection, and another gusset 1-2 on the Vertical direction extends upwardly to outlet(discharge) flange neck place; The one gusset 1-2 at outlet(discharge) flange neck place extends upwardly to outlet(discharge) flange neck place, and all the other tibet cinnamon bark plate 1-5,1-6,1-7 all extend to the flange cylindrical place of the pump housing and bearing bracket stand connection.Owing to changed the sealing configuration of bearing, can prevent from that lubricant oil in the bearing from overflowing with introduced contaminants to enter, improved working life.Set up chuck between impeller and impeller nut, it is loosening to avoid it to produce, and has guaranteed the sealing of pump shaft again, prevents crevice corrosion.Respectively set up four stiffening ribs at neck flange place, pump housing entry and exit, to pump housing footing with and supporting surface carry out suitable reinforcement, satisfy its shockproof requirements.
It is stable, easy to maintenance to the utlity model has serviceability, long service life, and whole shock resistance strengthens Etc. characteristics, be applicable to the requirement of nuclear power station working environment.
Claims (1)
1, a kind of pressurized-water reactor nuclear power plant boric acid transfer pump, comprise the pump housing (1), impeller nut (2), impeller (7), pump cover (8), sealed member (11), bearing bracket stand (13), rolling bearing (14), pump shaft (16), it is characterized in that: between forward and backward bearing gland (15) and pump shaft (16), set up mechanical oil sealing (12), the pump cover side that is fixed in the bearing bracket stand (13) on the pump housing (1) is provided with mechanical seal parts (11), be socketed on the protective shaft sleeve (10) of pump shaft and the impeller hub end face that is in contact with it between be provided with " O " RunddichtringO (9); The chuck (3) 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 (3) and the impeller nut (2); Fitting surface is respectively equipped with " O " RunddichtringO (4), (5) between impeller nut and the chuck and between chuck and the impeller; Inlet outside the pump housing (1) and outlet(discharge) flange neck place respectively establish four stiffening ribs, wherein inlet flange neck place establishes four orthogonal stiffening ribs, the gusset (1-4) of the gusset of substantially horizontal (1-1), (1-3) and Vertical direction extends to the flange cylindrical place of the pump housing and bearing bracket stand connection, and the gusset on the Vertical direction (1-2) extends upwardly to outlet(discharge) flange neck place; The orthogonal distribution on horizontal plane of the gusset at outlet(discharge) flange neck place, gusset (1-2) extends upwardly to outlet(discharge) flange neck place, and all the other tibet cinnamon bark plates (1-5), (1-6), (1-7) all extend to the flange cylindrical place of the pump housing and bearing bracket stand connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202203227U CN201368052Y (en) | 2008-11-30 | 2008-11-30 | Boric acid transfer pump used in PWR nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202203227U CN201368052Y (en) | 2008-11-30 | 2008-11-30 | Boric acid transfer pump used in PWR nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368052Y true CN201368052Y (en) | 2009-12-23 |
Family
ID=41486945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202203227U Expired - Fee Related CN201368052Y (en) | 2008-11-30 | 2008-11-30 | Boric acid transfer pump used in PWR nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201368052Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635575A (en) * | 2012-03-27 | 2012-08-15 | 上海阿波罗机械股份有限公司 | Pump body for boric acid recycling pump |
| CN102889241A (en) * | 2012-03-27 | 2013-01-23 | 上海阿波罗机械股份有限公司 | Pump body for PCS (passive containment cooling system) recirculating pump |
| CN110425177A (en) * | 2019-09-10 | 2019-11-08 | 浙江日井泵业股份有限公司 | A kind of impeller anti-wear structure on water pump |
-
2008
- 2008-11-30 CN CNU2008202203227U patent/CN201368052Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635575A (en) * | 2012-03-27 | 2012-08-15 | 上海阿波罗机械股份有限公司 | Pump body for boric acid recycling pump |
| CN102889241A (en) * | 2012-03-27 | 2013-01-23 | 上海阿波罗机械股份有限公司 | Pump body for PCS (passive containment cooling system) recirculating pump |
| CN110425177A (en) * | 2019-09-10 | 2019-11-08 | 浙江日井泵业股份有限公司 | A kind of impeller anti-wear structure on water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Cuiping Document name: Review of business letter |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |