CN102022339A - Component cooling water pump for nuclear power plant - Google Patents
Component cooling water pump for nuclear power plant Download PDFInfo
- Publication number
- CN102022339A CN102022339A CN2009101961753A CN200910196175A CN102022339A CN 102022339 A CN102022339 A CN 102022339A CN 2009101961753 A CN2009101961753 A CN 2009101961753A CN 200910196175 A CN200910196175 A CN 200910196175A CN 102022339 A CN102022339 A CN 102022339A
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- pump
- bearing
- housing
- bearing support
- cover
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Abstract
The invention discloses a component cooling water pump for a nuclear power plant, which is a single-stage, single-suction, double-volute and horizontal arm-hanging type centrifugal pump. The pump is characterized in that a pump body is in a radial split-casing double-volute structure, one end of the pump body is provided with a suction inlet, and a pump cover is fixedly connected to the other end of the pump body; the upper side of the pump body is provided with a discharge outlet, and the suction inlet is perpendicular to the discharge outlet; a pump shaft passes through the pump cover and a bearing body; and a shaft seal assembly is composed of box-type mechanical seal components. The component cooling water pump disclosed by the invention has the advantages that the pump body is in a radial split-casing double-volute structure, and the centre line of an impeller is coincide with the centre line of the pump body, therefore, the radial force of the pump in the process of operating can be reduced, the shock resistance is enhanced, the service life is prolonged, and the volume of the pump is reduced; and because a thin-oil self-lubricating system is adopted, the pump can directly start without pre-lubrication, thereby enhancing the operating stability of the pump.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to fluid conveying machine, particularly pump, a kind of specifically used in nuclear power station component cooling pump.
Background technique:
Nuclear power station adopts component cooling pump to cool off various nuclear island heat exchangers, and through heat exchanger by the cooling of essential service water pump, heat load is passed to seawater, thereby between nuclear island heat exchanger and seawater, form barrier, uncontrollably be discharged in the seawater from the radioactive fluid of relevant heat exchanger preventing.The main Safety function of component cooling pump be under normal and accident operating conditions with important station-service safe water pumping system, heat from important, and security-related room, system and equipment be delivered to ultimate heat sink-seawater; Simultaneously, when the heat exchanger that is cooled (contaminated and possible contaminated) contingency was leaked, component cooling pump can prevent that radioactive fluid uncontrollably is discharged in the seawater.The pump housing of existing cooling waterpump adopts double suction middle open type structure, its unreasonable structure, and pump volume is big, produces bigger radial force during operation, and shock resistance is poor, and working life is short, and existing coolant pump needs the external forced lubrication system lubricated simultaneously, and toggle speed is slow.
Summary of the invention:
The purpose of this invention is to provide a kind of component cooling pump that is used for nuclear power station, the described this component cooling pump that is used for nuclear power station will solve the technical problem that prior art nuclear power plant equipment cooling waterpump volume is big, shock resistance is poor, need the external forced lubrication system to lubricate.
This component cooling pump that is used for nuclear power station of the present invention is an one step single sucking, two volutes, the cantilever horizontal centrifugal pump constitutes, described centrifugal pump is by stator module, rotor assembly, bearing unit and gland seal assembly constitute, wherein, described stator module is by the pump housing, pump cover and bearing support constitute, described rotor assembly is by pump shaft, impeller and Oil Guide ring constitute, described bearing unit is by roller bearing, a pair of angular contact ball bearing, front bearing retainer and rear bearing cover constitute, the described pump housing is the two turbocharger housing structures of radially split type, one end of the pump housing is provided with suction port, described pump cover is fixedly connected on the other end of the pump housing, the upside of the pump housing is provided with discharge opening, described suction port is vertical mutually with described discharge opening, described bearing support is fixedlyed connected with pump cover, described pump shaft passes pump cover and described bearing support, one end of pump shaft extends in the pump housing, described roller bearing is arranged on the middle part of pump shaft, described a pair of angular contact ball bearing is arranged on the drive end of pump shaft, described impeller is arranged on the terminal of pump shaft and is positioned at the center position of the pump housing, fix by impeller nut between impeller and the pump shaft, roller bearing is arranged in the bearing support in the described bearing support, angular contact ball bearing is arranged in the bearing housing, described bearing housing is by an end that is bolted to bearing support, described front bearing retainer and rear bearing cover are separately positioned on the two ends of bearing support, described Oil Guide ring is arranged on a side of bearing housing, described gland seal assembly is made of boxlike mechanical seal, and described boxlike mechanical seal is set between the middle part and pump cover of pump shaft.
Further, be provided with oil-through hole in the described bearing housing, the right-hand member inside of bearing support is provided with oil inlet hole, the bearing housing inner space is communicated with by described oil-through hole with bearing support is inner, bearing support left end inside is provided with the oil circuit hole, and bearing support left end shaft bearing inner space is communicated with by described oil circuit hole with bearing support is inner.
Further, the right-hand member of pump shaft is provided with a pump coupling by back-up ring, and the pump shaft between described pump coupling and the angular contact ball bearing is provided with axle sleeve.
Further, the back-to-back setting of described a pair of angular contact ball bearing.
Further, pump cover is connected by bolt with bearing support, also is provided with the pre-connection screw between pump cover and the bearing support.
Working principle of the present invention is: bearing part adopts the thin oil selflubricating, and no forced lubricating system guarantees that pump does not have pre-lubrication and starts fast; Adopt double-shell structure, active balance radial force, make pump work more stable, reduced pump volume simultaneously; Rolling bearing is nested in the bearing housing, has made things convenient for Mounting of Rolling Contact Bearing and dismounting, by screw positioning shaft bearing sleeve; By pump coupling back-up ring mounted pump coupling.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention adopts the radially split type double-shell structure, adopts horizontal type structure, makes impeller center line and pump housing central lines, and the radial force when reducing to move improves shock resistance, increases the service life, and reduces the volume of pump; Adopt the thin oil self lubricating system, make this pump can not have pre-lubrication and directly start, improve the operation stability of pump.
Description of drawings:
Fig. 1 is the structural representation that is used for the component cooling pump of nuclear power station of the present invention.
Embodiment:
Embodiment 1:
As shown in Figure 1, the present invention is used for the component cooling pump of nuclear power station, by stator module, rotor assembly, bearing unit and gland seal assembly constitute, wherein, described stator module is by the pump housing 1, pump cover 5 and bearing support 9 constitute, described rotor assembly is by pump shaft 19, impeller 4 and Oil Guide ring 10 constitute, described bearing unit is by roller bearing 8, angular contact ball bearing 12, front bearing retainer 21 and rear bearing cover 14 constitute, the described pump housing 1 is the two turbocharger housing structures of radially split type, be provided with intermediate section dividing plate 24 in the pump housing 1, the pump housing 1 is the double volute structure, suction port 25 is horizontally placed on the pump housing 1 one ends, pump cover 5 is arranged on the other end of the pump housing 1, pump cover 5 is connected with bearing support 9, discharge opening 26 is arranged on the pump housing 1 upside, suction port 25 is vertical with discharge opening 26, pump shaft 19 passes pump cover 5 and bearing support 9, one end of pump shaft 19 stretches in the pump housing 1, roller bearing 8 is arranged on pump shaft 19 middle parts, the angular contact ball bearing 12 of pairing is arranged on the drive end of pump shaft 19, impeller 4 is fixed in the end of pump shaft 19 by nut 2, between impeller 4 and the pump shaft 19 key 22 is set, impeller 4 center lines and the pump housing 1 central lines, be provided with casing ring 3 between impeller 4 left ends and the pump housing 1, roller bearing 8 is arranged in the bearing support of bearing support 9 left ends, angular contact ball bearing 12 is arranged in the bearing housing 13, bearing housing 13 is fixed in bearing support 9 right-hand members by bolt 11, roller bearing 8 left sides are provided with front bearing retainer 21, bearing housing 13 right sides are provided with rear bearing cover 14, bearing housing 13 left sides are provided with Oil Guide ring 10, gland seal assembly is made of boxlike mechanical seal 6, and it is corresponding with pump cover 5 positions that boxlike mechanical seal 6 is sheathed on pump shaft 19 left ends.
Further, be provided with oil-through hole 23 in the bearing housing 13, bearing support 9 right-hand member inside are provided with oil inlet hole 18, oil-through hole 23 is with bearing housing 13 inner spaces and bearing support 9 internal communication, bearing support 9 left end inside are provided with oil circuit hole 20, oil circuit hole 20 is bearing support left end shaft bearing inner space and bearing support internal communication, and the thin oils in the bearing support 9 can hold lubricatedly to the angle contacting ball journal 12 of roller bearing 8 and pairing like this, do not need the external forced lubrication system.
Further, be provided with pump coupling 16 at the pump shaft right-hand member by back-up ring 17, cover is provided with axle sleeve 15 on the pump shaft between pump coupling 16 and a pair of angular contact ball bearing 12 right sides.
Further, angular contact ball bearing 12 back-to-back settings.
Further, pump cover 5 and bearing support 9 are connected by bolt, also are provided with pre-connection screw 7 between pump cover 5 and the bearing support 9.
Claims (5)
1. component cooling pump that is used for nuclear power station, by one step single sucking, two volutes, the cantilever horizontal centrifugal pump constitutes, described centrifugal pump is by stator module, rotor assembly, bearing unit and gland seal assembly constitute, it is characterized in that: described stator module is by the pump housing, pump cover and bearing support constitute, described rotor assembly is by pump shaft, impeller and Oil Guide ring constitute, described bearing unit is by roller bearing, a pair of angular contact ball bearing, front bearing retainer and rear bearing cover constitute, the described pump housing is the two turbocharger housing structures of radially split type, one end of the pump housing is provided with suction port, described pump cover is fixedly connected on the other end of the pump housing, the upside of the pump housing is provided with discharge opening, described suction port is vertical mutually with described discharge opening, described bearing support is fixedlyed connected with pump cover, described pump shaft passes pump cover and described bearing support, one end of pump shaft extends in the pump housing, described roller bearing is arranged on the middle part of pump shaft, described a pair of angular contact ball bearing is arranged on the drive end of pump shaft, described impeller is arranged on the terminal of pump shaft and is positioned at the center position of the pump housing, fix by impeller nut between impeller and the pump shaft, roller bearing is arranged in the bearing support in the described bearing support, angular contact ball bearing is arranged in the bearing housing, described bearing housing is by an end that is bolted to bearing support, described front bearing retainer and rear bearing cover are separately positioned on the two ends of bearing support, described Oil Guide ring is arranged on a side of bearing housing, described gland seal assembly is made of boxlike mechanical seal, and described boxlike mechanical seal is set between the middle part and pump cover of pump shaft.
2. the component cooling pump that is used for nuclear power station as claimed in claim 1, it is characterized in that: be provided with oil-through hole in the described bearing housing, the right-hand member inside of bearing support is provided with oil inlet hole, the bearing housing inner space is communicated with by described oil-through hole with bearing support is inner, bearing support left end inside is provided with the oil circuit hole, and bearing support left end shaft bearing inner space is communicated with by described oil circuit hole with bearing support is inner.
3. the component cooling pump that is used for nuclear power station as claimed in claim 1 is characterized in that: the right-hand member of pump shaft is provided with a pump coupling by back-up ring, and the pump shaft between described pump coupling and the angular contact ball bearing is provided with axle sleeve.
4. the component cooling pump that is used for nuclear power station as claimed in claim 1 is characterized in that: the back-to-back setting of described a pair of angular contact ball bearing.
5. the component cooling pump that is used for nuclear power station as claimed in claim 1 is characterized in that: pump cover is connected by bolt with bearing support, also is provided with the pre-connection screw between pump cover and the bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101961753A CN102022339A (en) | 2009-09-23 | 2009-09-23 | Component cooling water pump for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101961753A CN102022339A (en) | 2009-09-23 | 2009-09-23 | Component cooling water pump for nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022339A true CN102022339A (en) | 2011-04-20 |
Family
ID=43864008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101961753A Pending CN102022339A (en) | 2009-09-23 | 2009-09-23 | Component cooling water pump for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022339A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953552A (en) * | 2014-04-18 | 2014-07-30 | 陕西科技大学 | Anion exchanger water feed pump |
| CN106593889A (en) * | 2016-12-29 | 2017-04-26 | 镇江福泰克流体技术有限公司 | Centrifugal pump applicable to small and medium flow work conditions |
| CN108661916A (en) * | 2018-04-13 | 2018-10-16 | 陕西科技大学 | A kind of refined feed pump |
| CN108716468A (en) * | 2018-04-13 | 2018-10-30 | 陕西科技大学 | A kind of efficient sealed feed pump |
| JP2019100540A (en) * | 2017-11-29 | 2019-06-24 | テラル株式会社 | Coupling guard and rotational drive device with coupling guard |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025668B2 (en) * | 1997-12-03 | 2000-03-27 | 株式会社酉島製作所 | Centrifugal pump |
| CN1892046A (en) * | 2005-07-07 | 2007-01-10 | 上海东方泵业(集团)有限公司 | Dual-scroll pump |
| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN201173193Y (en) * | 2007-10-23 | 2008-12-31 | 上海凯泉泵业（集团）有限公司 | Coal slurry recycle pump for coal oil |
| CN201187473Y (en) * | 2008-04-07 | 2009-01-28 | 上海凯士比泵有限公司 | Residual heat discharge pump for nuclear power station |
-
2009
- 2009-09-23 CN CN2009101961753A patent/CN102022339A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025668B2 (en) * | 1997-12-03 | 2000-03-27 | 株式会社酉島製作所 | Centrifugal pump |
| CN1892046A (en) * | 2005-07-07 | 2007-01-10 | 上海东方泵业(集团)有限公司 | Dual-scroll pump |
| CN201173193Y (en) * | 2007-10-23 | 2008-12-31 | 上海凯泉泵业（集团）有限公司 | Coal slurry recycle pump for coal oil |
| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN201187473Y (en) * | 2008-04-07 | 2009-01-28 | 上海凯士比泵有限公司 | Residual heat discharge pump for nuclear power station |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953552A (en) * | 2014-04-18 | 2014-07-30 | 陕西科技大学 | Anion exchanger water feed pump |
| CN106593889A (en) * | 2016-12-29 | 2017-04-26 | 镇江福泰克流体技术有限公司 | Centrifugal pump applicable to small and medium flow work conditions |
| JP2019100540A (en) * | 2017-11-29 | 2019-06-24 | テラル株式会社 | Coupling guard and rotational drive device with coupling guard |
| CN108661916A (en) * | 2018-04-13 | 2018-10-16 | 陕西科技大学 | A kind of refined feed pump |
| CN108716468A (en) * | 2018-04-13 | 2018-10-30 | 陕西科技大学 | A kind of efficient sealed feed pump |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110420 |