CN201714677U - Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant - Google Patents
Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant Download PDFInfo
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- CN201714677U CN201714677U CN 201020250395 CN201020250395U CN201714677U CN 201714677 U CN201714677 U CN 201714677U CN 201020250395 CN201020250395 CN 201020250395 CN 201020250395 U CN201020250395 U CN 201020250395U CN 201714677 U CN201714677 U CN 201714677U
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- pump
- impeller
- heat removal
- residual heat
- nuclear power
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Abstract
The utility model relates to a pump for nuclear power plants, in particular to a residual heat removal pump of a nucleus secondary pump for a pressurized water reactor nuclear power plant, which comprises a shell, an impeller, a pump cover, a sealing box body, a bearing body, a shaft and a bearing bracket, wherein the pump cover is fixed on the shell, one end of the bearing body is fixed on the pump cover, and the other end thereof is supported by the bearing bracket; one end of the shaft is installed on the bearing body, and the other end thereof is penetrated through the pump cover and is provided with the impeller; and the sealing box body is installed on the pump cover and is sleeved on the shaft, and a cooling cavity is formed between the sealing box body and the pump cover. The utility model is a horizontal, single stage, single absorption and back opening door type centrifugal pump, and is supported by a center line. The pump adopts a horizontal absorption and vertical discharge structure, a rotor is of a cantilever structure, the pump does not need to dismantle connection pipes at an inlet and an outlet when in overhaul, so the overhaul is more convenient, and the occupied area is reduced.
Description
Technical field
The utility model relates to the used in nuclear power station pump, and specifically a kind of pressurized-water reactor nuclear power plant is with examining the two stage pump residual heat removal pump.
Background technique
Along with the fast development of China's economic construction and the adjustment of energy policy; the development nuclear power is the only way of guaranteeing Chinese energy safety, optimization China energy resource structure, protection environment, alleviating the scarce coal contradiction of the few electricity in the southeastern coastal areas, electric power sustainable development, in China very wide nuclear power market is arranged.The nuclear power cause of China will be developed faster at initial stage 21st century, and nuclear power generating sets will be developed into 4,000 ten thousand kilowatts of the year two thousand twenties (account for the total installation of generating capacity of generating electricity at that time 4%) by present 8,700,000 kilowatts.
But at present, the nuclear pump market of China is still based on import, and residual heat removal pump is unique nuclear two stage pump that is arranged within the nuclear island except that main pump.By the independent development residual heat removal pump, progressively grasp the designed productive capacity of pressurized-water reactor nuclear power plant two stage pump, the development of promotion China nuclear power cause, to become problem demanding prompt solution.
The model utility content
It is a kind of simple in structure that the purpose of this utility model is to provide, and the pressurized-water reactor nuclear power plant of being convenient to operate, safeguard is with examining the two stage pump residual heat removal pump.The structural type of this residual heat removal pump is horizontal, single-stage, single suction, back opening door centrifugal pump.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises housing, impeller, pump cover, sealed letter body, bearing support, axle and bearing support support, and wherein pump cover is fixed on the housing, and an end of described bearing support is fixed on the pump cover, and the other end is by the bearing support stent support; One end of described axle is installed on the bearing support, and the other end is penetrated and be provided with impeller by pump cover; Described sealed letter body is installed on the pump cover, and is set on the axle, forms cooling chamber between sealed letter body and the pump cover.
Wherein: level is provided with suction port and the outlet vertical with this suction port on the described housing; Described axle is a cantilevered axle, and an end of axle supports, is installed on the bearing support by roller bearing and double-row angular contact bal bearing; The outside of described bearing support is provided with whole cooling jacket; The outside of described impeller is provided with stator radially, and this stator directly extends to impeller outlet by the entrance channel of impeller, becomes an integral body with shell combination; On the described impeller, be respectively equipped with the choma of adjusting axle axial force size in the front and back of blade; The rear portion of described impeller is provided with multiple tracks and reduces the seal ring that particle in the medium enters Seal cage.
Advantage of the present utility model and good effect are:
1. the utility model is horizontal, single-stage, single suction, back opening door centrifugal pump, the center line supporting; Pump employing level sucks, vertical discharging structure, and rotor is a cantilever structure, and pump need not unload the import and export of pump and take over when maintenance, make that maintenance is convenient, and floor space reduces.
2. impeller outer of the present utility model is provided with radially stator, and stator directly extends to impeller outlet by the impeller eye runner, is combined into an integral body with pump case, makes liquid stabilising enter annular delivery chamber uniformly, improves flowing state.
3. choma is set before and after the impeller of the present utility model, adjusts the size of axial force, make pump shaft generally be in tension state, improve the rigidity of axle, axial force is born by the angular contact ball bearing of the paired mounting of drive end.
4. impeller of the present utility model rear portion is provided with multiple-sealed ring, and particle enters Seal cage in the medium to reduce.
5. pump cover of the present utility model and sealed letter body place are provided with double seal, are provided with the leakage peep hole therebetween.
6. the characteristic of hydraulic model net positive suction head height of the present utility model, efficient high imbedibility, wide operating range.
7. there is the condition of high temperature in the utility model working state, reduces the additional force of its interface, and all pressure-bearings of pump and supporting member adopt symmetric design, and are provided with the symmetry properties that axially and radially guarantees its expansion.
8. the whole cooling jacket of the utility model bearing support arranged outside can reduce bearing temperature, has improved the intensity of bearing support simultaneously.
9. the utility model fed sheet of a media does not have and leaks, and all have the junction plane Seal Design height that contacts reliable with medium.
10. the utility model anti-seismic performance is good, all can keep the integrity and the performability of pump between earthquake period and after the earthquake.
Description of drawings
Fig. 1 is an internal structure schematic representation of the present utility model;
Fig. 2 is the structural representation of residual heat removal pump pump group;
Wherein: 1 is housing, and 2 is axis head nut, and 3 is stator, and 4 is impeller, 5 is pump cover, and 6 is the sealed letter body, and 7 are mechanical seal, and 8 is roller bearing, 9 is bearing support, and 10 is cooling jacket, and 11 is axle, and 12 is double-row angular contact bal bearing, 13 is bearing gland, and 14 is the bearing support support, and 15 is motor, and 16 is coupling shield, 17 is coupling, and 18 is residual heat removal pump, and 19 is the pump base plate, 20 is electric baseboard, and 21 is suction port, and 22 are outlet.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Every cover residual heat removal system is provided with two residual heat removal pump groups, and as shown in Figure 2, every residual heat removal pump group comprises residual heat removal pump 18, motor 15 and coupling 17.Residual heat removal pump 18 is the single-stage cantilever pump, residual heat removal pump 18 is installed in respectively on pump base plate 19 and the electric baseboard 20 with motor 15, pump base plate 19 and electric baseboard 20 dispose hanger, horizontal adjustment screw and stone bolt, are distorted when transmitting load or vibrate preventing.Be connected by coupling 17 between residual heat removal pump 18 and the motor 15, coupling 17 is a diaphragm coupling, and shaft coupling in the middle of the middle adapted when maintenance dismounting bearing and mechanical seal, need not dismantled motor, like this as long as jack shaft is taken off; Outside coupling 17, be provided with detachable, totally enclosed coupling shield 16, the safety when being used for guaranteeing the operation of pump group.
As shown in Figure 1, the structural type of residual heat removal pump of the present utility model is horizontal, single-stage, single suction, back opening door centrifugal pump, comprises housing 1, axis head nut 2, stator 3, impeller 4, pump cover 5, sealed letter body 6, mechanical seal 7, roller bearing 8, bearing support 9, cooling jacket 10, axle 11, angular contact ball bearing 12, bearing gland 13, bearing support support 14, suction port 21 and exports 22.A tight side at housing 1, sealed letter body 6 is fixed on the pump cover 5 described pump cover 5 by stud, forms a cooling chamber with pump cover 5, is provided with mechanical seal 7 between sealed letter body 6 and the axle 11; One end of bearing support 9 is fixed by bolts on the pump cover 5, and the other end is supported by bearing support support 14, and bearing support support 14 is fixed on the bearing support 9 bearing at end glands 13; The outside of bearing support 9 is provided with whole cooling jacket 10, when reducing bearing temperature, also can improve the intensity of bearing support; Described axle 11 is a cantilevered axle, and an end of axle 11 supports, is installed on the bearing support 9 by roller bearing 8 and double-row angular contact bal bearing 12, and the other end is penetrated by pump cover 5; Described impeller 4 is installed in the other end of axle 11 by axis head nut 2; From suction port, impeller 4 turns clockwise.The outside of impeller 4 is provided with stator 3 radially, and this stator 3 directly extends to impeller outlet by the entrance channel of impeller, is combined into an integral body with housing 1, makes liquid stabilising enter annular delivery chamber equably, can improve the flowing state of liquid.The front and back of impeller 4 are respectively equipped with choma, can adjust axle 11 axial force sizes, make axle 11 be in tension state, improve the rigidity of axle 11; The axial force of axle 11 is born by the angular contact ball bearing of the paired mounting of drive end.The rear portion of impeller 4 is provided with multiple-sealed ring, and particle enters Seal cage in the medium to reduce.Pump is that level sucks, vertical discharging structure, promptly is respectively equipped with suction port 21 and exports 22 on housing 1, and suction port 21 is horizontally disposed with, and outlet 22 is vertical with suction port 21.
Working principle of the present utility model is:
The load distribution of residual heat removal pump of the present utility model has radial and axial both direction, radial load: the radial force of pump all balances in theory, but can be in actual moving process because hydraulic action produce slight radial force, this radial force and rotor deadweight are supported by roller bearing 8 and are born; Thrust load: impeller 4 is provided with equalizing orifice, balances a part of axial force, and remaining axial force is born by the angular contact ball bearing 12 of the paired mounting of drive end.
Self-circulating machine sealing is adopted in shaft sealing of the present utility model, carries out self-loopa flushing cooling by the pump fed sheet of a media, joins for cooler, has reduced the probability that leaks of fed sheet of a media.
Pump cover of the present utility model and sealed letter body place are provided with double seal, are provided with the leakage peep hole therebetween; The characteristic of hydraulic model net positive suction head height of the present utility model, efficient high imbedibility, wide operating range; All pressure-bearings of the present utility model and supporting element all adopt symmetric design, and are provided with the symmetry properties that axially and radially guarantees its expansion; All have the junction plane that contacts to be Seal Design with medium.
The fundamental performance parameter of residual heat removal pump of the present utility model such as following table:
The material of residual heat removal pump of the present utility model is:
Housing is Z2CN18-10
Pump cover is Z2CN18-10
Stator is Z5CND13-04
Impeller is Z5CND13-04
Axle is for being Z5CND16-04
Nut is X12Cr13
Double-screw bolt is X6CrNiCu17-14.
Claims (7)
1. a pressurized-water reactor nuclear power plant is with examining the two stage pump residual heat removal pump, it is characterized in that: comprise housing (1), impeller (4), pump cover (5), sealed letter body (6), bearing support (9), axle (11) and bearing support support (14), wherein pump cover (5) is fixed on the housing (1), one end of described bearing support (9) is fixed on the pump cover (5), and the other end is supported by bearing support support (14); One end of described axle (11) is installed on the bearing support (9), and the other end penetrates and be provided with impeller (4) by pump cover (5); Described sealed letter body (6) is installed on the pump cover (5), and is set on the axle (11), forms cooling chamber between sealed letter body (6) and the pump cover (5).
2. by the described pressurized-water reactor nuclear power plant of claim 1 nuclear two stage pump residual heat removal pump, it is characterized in that: described housing (1) is gone up level and is provided with suction port (21) and the outlet (22) vertical with this suction port (21).
3. by the described pressurized-water reactor nuclear power plant of claim 1 nuclear two stage pump residual heat removal pump, it is characterized in that: described axle (11) supports, is installed on the bearing support (9) by roller bearing (8) and double-row angular contact bal bearing (12) for cantilevered axle a, end of axle (11).
4. by claim 1 or 3 described pressurized-water reactor nuclear power plants nuclear two stage pump residual heat removal pump, it is characterized in that: the outside of described bearing support (9) is provided with whole cooling jacket (10).
5. by the described pressurized-water reactor nuclear power plant of claim 1 nuclear two stage pump residual heat removal pump, it is characterized in that: the outside of described impeller (4) is provided with stator (3) radially, this stator (3) directly extends to impeller outlet by the entrance channel of impeller, is combined into an integral body with housing (1).
6. by the described pressurized-water reactor nuclear power plant of claim 1 nuclear two stage pump residual heat removal pump, it is characterized in that: on the described impeller (4), be respectively equipped with the choma of adjusting axle (11) axial force size in the front and back of blade.
By the described pressurized-water reactor nuclear power plant of claim 1 with nuclear two stage pump residual heat removal pump, it is characterized in that: the rear portion of described impeller (4) is provided with multiple tracks and reduces the seal ring that particle in the medium enters Seal cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020250395 CN201714677U (en) | 2010-07-07 | 2010-07-07 | Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020250395 CN201714677U (en) | 2010-07-07 | 2010-07-07 | Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714677U true CN201714677U (en) | 2011-01-19 |
Family
ID=43460673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020250395 Expired - Lifetime CN201714677U (en) | 2010-07-07 | 2010-07-07 | Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714677U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606534A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Waste heat discharge pump for nuclear power plant |
| CN103195742A (en) * | 2013-04-12 | 2013-07-10 | 上海阿波罗机械股份有限公司 | Mechanical seal for residual heat removal pump |
| CN103321939A (en) * | 2013-05-31 | 2013-09-25 | 哈尔滨电气动力装备有限公司 | Testing device for forced circulation pump hydraulic model for 600MW thermal power plant ultra-supercritical boiler |
| CN104929984A (en) * | 2015-07-10 | 2015-09-23 | 南阳新威机电有限公司 | Nuclear power system and residual heat removal pump thereof |
| CN112922850A (en) * | 2021-03-30 | 2021-06-08 | 上海凯泉泵业（集团）有限公司 | Vertical volute type single-stage centrifugal pump for nuclear power |
| CN114198313A (en) * | 2021-12-07 | 2022-03-18 | 中国船舶重工集团公司第七一九研究所 | Integrated form pump station |
-
2010
- 2010-07-07 CN CN 201020250395 patent/CN201714677U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606534A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Waste heat discharge pump for nuclear power plant |
| CN103195742A (en) * | 2013-04-12 | 2013-07-10 | 上海阿波罗机械股份有限公司 | Mechanical seal for residual heat removal pump |
| CN103195742B (en) * | 2013-04-12 | 2016-04-20 | 上海阿波罗机械股份有限公司 | A kind of mechanical seal for residual heat removal pump |
| CN103321939A (en) * | 2013-05-31 | 2013-09-25 | 哈尔滨电气动力装备有限公司 | Testing device for forced circulation pump hydraulic model for 600MW thermal power plant ultra-supercritical boiler |
| CN104929984A (en) * | 2015-07-10 | 2015-09-23 | 南阳新威机电有限公司 | Nuclear power system and residual heat removal pump thereof |
| CN112922850A (en) * | 2021-03-30 | 2021-06-08 | 上海凯泉泵业（集团）有限公司 | Vertical volute type single-stage centrifugal pump for nuclear power |
| CN114198313A (en) * | 2021-12-07 | 2022-03-18 | 中国船舶重工集团公司第七一九研究所 | Integrated form pump station |
| CN114198313B (en) * | 2021-12-07 | 2024-04-16 | 中国船舶重工集团公司第七一九研究所 | Integrated pump station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG BLOWER WORKS GROUP CORPORATION Free format text: FORMER OWNER: SHENYANG BLOWER WORKS GROUP CO., LTD. Effective date: 20110906 Owner name: SHENYANG TOUPING MACHINERY CO., LTD. CHINA NUCLEAR Free format text: FORMER OWNER: SHENYANG TOUPING MACHINERY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Xuejun Inventor after: Dai Jishuang Inventor after: Long Xiangpeng Inventor after: Yu Hongchang Inventor after: Hou Jinfu Inventor after: Gao Guohong Inventor after: Yan Qiang Inventor after: Han Baohua Inventor before: Long Xiangpeng Inventor before: Yu Hongchang Inventor before: Hou Jinfu Inventor before: Gao Guohong Inventor before: Yan Qiang Inventor before: Han Baohua |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 110142 SHENYANG, LIAONING PROVINCE TO: 110869 SHENYANG, LIAONING PROVINCE Free format text: CORRECT: INVENTOR; FROM: LONG XIANGPENG YU HONGCHANG HOU JINFU GAO GUOHONG YAN QIANG HAN BAOHUA TO: WANG XUEJUN DAI JISHUANG LONG XIANGPENG YU HONGCHANG HOU JINFU GAO GUOHONG YAN QIANG HAN BAOHUA |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110906 Address after: 110869 Shenyang economic and Technological Development Zone, Liaoning development road, a No. 16 Co-patentee after: Shenyang Turbo Machinery Co., Ltd. Patentee after: Shenyang Blower Works Group Corporation Co-patentee after: China Nuclear Power Engineering Co., Ltd. Co-patentee after: Shenyang Blower Works Group Nuclear Power Pump Co., Ltd. Address before: 110142, No. 16, development road, Shenyang economic and Technological Development Zone, Liaoning, China Co-patentee before: Shenyang Turbo Machinery Co., Ltd. Patentee before: Shenyang Blower Works Group Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
|
| CX01 | Expiry of patent term |