CN203239626U - AP1000 core main pump with long-short vane guiding vanes - Google Patents
AP1000 core main pump with long-short vane guiding vanes Download PDFInfo
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- CN203239626U CN203239626U CN 201320109102 CN201320109102U CN203239626U CN 203239626 U CN203239626 U CN 203239626U CN 201320109102 CN201320109102 CN 201320109102 CN 201320109102 U CN201320109102 U CN 201320109102U CN 203239626 U CN203239626 U CN 203239626U
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Abstract
The utility model relates to an AP1000 core main pump with long-short vane guiding vanes. The designing mode of the guiding vanes is that long vanes and short vanes are at intervals, and the number of the long vanes and the number of the short vanes are equal and are both eleven. The short vanes are placed close to a guiding vane outlet. The short vanes are arranged among the long vanes. Generating and developing of secondary back flow can be effectively avoided. When water loss accidents happen, the AP1000 core main pump operates in a small-flow working condition, when cooling liquid flows through the middle portion of the guiding vanes (4), secondary back flow can be generated, and the short vanes are placed close to the guiding vane outlet to change a flow field, so that generating of secondary back flow is avoided. Accordingly, vibration of the AP1000 core main pump is lowered, service life is prolonged, and meanwhile the efficiency of the core main pump is improved, and safe and stable operation of the core main pump under the working condition of small flow is guaranteed.
Description
Technical field
The present invention relates to a kind of AP1000 nuclear main pump with the deviated splitter vane stator, be used for improving the stator exit flow field, avoid producing secondary back.
Background technique
AP1000 nuclear main pump is the most critical power equipment of guaranteeing nuclear plant safety and reliable operation, belongs to nuclear I level pump, is unique rotating equipment in the nuclear island, also is one of the pressure boundary in a loop.Nuclear main pump long-term stability is moved safely the cooling reactor core and is prevented that the generation of nuclear power plant accident is particularly important, therefore examines the heart that main pump often is called nuclear power station.Nuclear reactor moves in the full power situation, and nuclear main pump inducer ooling channel breaks suddenly and causes the generation of loss of-coolant accident (LOCA) (LOCA) and cause that Main Coolant runs off, and makes the whole decline of whole reactor coolant loop pressure.Loss of-coolant accident (LOCA) refers to that a circuit pressure border produces cut or breaks the accident that a part of or most of freezing mixture is revealed.When cut in the heat pipe section, and break size is when continue increasing, the nuclear main pump will occur to follow simultaneously flow progressively to reduce by the transition transient process of pump operating mode to damped condition at short notice.At low flow rate condition, nuclear main pump fluctuation of service produces secondary back near the stator outlet, causes vibration and the Efficiency Decreasing of pump.Propose a kind of measure that improves nuclear main pump stator exit flow field under the low flow rate condition and seem very necessary.
Summary of the invention
Can avoid producing secondary back near the stator outlet at the low flow rate condition safe and stable operation in order to ensure the nuclear main pump, reduce the vibration of pump, the present invention adopts a kind of AP1000 nuclear main pump with the deviated splitter vane stator.
Realize that the technological scheme that above-mentioned purpose adopts is:
The design of stator is the deviated splitter vane interval, and the deviated splitter vane number equates that the stator deviated splitter vane number average of present embodiment is 11, and short blade is placed on by the stator outlet port, and short blade is set between linear leaf, effectively prevents generation and the development of secondary back.General deviated splitter vane number is respectively got 9～13
The invention has the beneficial effects as follows: work as low flow rate condition, secondary back does not occur in the stator outlet port, reduces the vibration of AP1000 nuclear main pump, has prolonged its working life, has improved simultaneously the efficient of nuclear main pump, and guaranteeing to examine main pump can be at the low flow rate condition safe and stable operation.
Description of drawings
Fig. 1 is the AP1000 nuclear main pump schematic representation of one embodiment of the invention.
Fig. 2 is nuclear main pump hydraulic block diagram, comprises stator, impeller, spherical pump case.
Among the figure: 1. spherical pump case, 2. suction connection, 3. impeller, 4. stator, 5. heat shielding, 6. linear leaf, 7. short blade.
Embodiment
Fig. 1 and Fig. 2 have determined the structural type of AP1000 nuclear main pump in the present embodiment jointly.Rotation by impeller (3) is done work to cooling liquid, and then cooling liquid is discharged to the radially discharge tube of pump case side by stator (4).When loss of-coolant accident (LOCA) occured, AP1000 nuclear main pump moved at low flow rate condition, when cooling liquid is flowed through stator (4) middle part, can produce secondary back, changed the flow field by the short blade that arranges near the stator outlet, thereby avoided the generation of secondary back.Thereby reduce the vibration of AP1000 nuclear main pump, prolonged its working life, improved simultaneously the efficient of nuclear main pump, guaranteeing to examine main pump can be at the low flow rate condition safe and stable operation.
Claims (2)
1. the AP1000 with the deviated splitter vane stator examines main pump, it is characterized in that: stator comprises linear leaf (6), short blade (7), and stator is the design of deviated splitter vane interval, and the deviated splitter vane number equates, and short blade is placed on by the stator outlet port, and short blade is set between linear leaf.
2. the AP1000 with the deviated splitter vane stator according to claim 1 examines main pump, and it is characterized in that: the deviated splitter vane number is respectively got 9～13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109102 CN203239626U (en) | 2013-03-07 | 2013-03-07 | AP1000 core main pump with long-short vane guiding vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109102 CN203239626U (en) | 2013-03-07 | 2013-03-07 | AP1000 core main pump with long-short vane guiding vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239626U true CN203239626U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320109102 Expired - Fee Related CN203239626U (en) | 2013-03-07 | 2013-03-07 | AP1000 core main pump with long-short vane guiding vanes |
Country Status (1)
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| CN (1) | CN203239626U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275880A (en) * | 2015-10-16 | 2016-01-27 | 江苏大学 | Flow mixing type nuclear main pump |
| CN105805044A (en) * | 2016-04-25 | 2016-07-27 | 江苏大学 | Logarithmic spiral line guide vane with long and short blades for nuclear main pump and design method of logarithmic spiral line guide vane |
| CN106567859A (en) * | 2016-11-04 | 2017-04-19 | 江苏大学 | Nuclear main pump spherical pumping chamber |
| CN107100896A (en) * | 2017-05-25 | 2017-08-29 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump with efficient diffuser |
| CN107269587A (en) * | 2017-04-26 | 2017-10-20 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump with resistance to compression pump case |
| WO2018037232A3 (en) * | 2016-08-24 | 2018-04-12 | Rotech Group Limited | Improvements in and relating to underwater excavation apparatus |
| CN108457907A (en) * | 2018-03-28 | 2018-08-28 | 大连理工大学 | One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure and guide vane design method |
| CN110500288A (en) * | 2019-08-15 | 2019-11-26 | 江苏金麟化工机械有限公司 | A kind of MODEL VERTICAL MULTISTAGE PUMP space guide vane body |
| CN111828336A (en) * | 2019-04-15 | 2020-10-27 | 孟想 | Ultra-silent zero-leakage nuclear main pump/fan compressor integrated design scheme |
| CN112196832A (en) * | 2020-10-26 | 2021-01-08 | 江苏大学 | Guide vane body with flow distribution sheet |
| CN115163542A (en) * | 2022-07-28 | 2022-10-11 | 江苏大学 | Nuclear reactor main pump with shedding-inhibiting scroll plate |
-
2013
- 2013-03-07 CN CN 201320109102 patent/CN203239626U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275880A (en) * | 2015-10-16 | 2016-01-27 | 江苏大学 | Flow mixing type nuclear main pump |
| CN105275880B (en) * | 2015-10-16 | 2019-02-05 | 江苏大学 | A kind of mixed-flow core main pump |
| CN105805044A (en) * | 2016-04-25 | 2016-07-27 | 江苏大学 | Logarithmic spiral line guide vane with long and short blades for nuclear main pump and design method of logarithmic spiral line guide vane |
| CN105805044B (en) * | 2016-04-25 | 2019-04-30 | 江苏大学 | Log spiral guide vane and its design method of the one seed nucleus main pump with deviated splitter vane |
| EP4036322A1 (en) * | 2016-08-24 | 2022-08-03 | Rotech Group Limited | Improvements in and relating to underwater excavation apparatus |
| WO2018037232A3 (en) * | 2016-08-24 | 2018-04-12 | Rotech Group Limited | Improvements in and relating to underwater excavation apparatus |
| CN106567859B (en) * | 2016-11-04 | 2019-04-02 | 江苏大学 | One seed nucleus main pump spherical shape pumping chamber |
| CN106567859A (en) * | 2016-11-04 | 2017-04-19 | 江苏大学 | Nuclear main pump spherical pumping chamber |
| CN107269587A (en) * | 2017-04-26 | 2017-10-20 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump with resistance to compression pump case |
| CN107100896A (en) * | 2017-05-25 | 2017-08-29 | 合肥皖化电泵有限公司 | A kind of boiler water circulating pump with efficient diffuser |
| CN108457907A (en) * | 2018-03-28 | 2018-08-28 | 大连理工大学 | One seed nucleus main pump symmetrical expression non-uniform Distribution guide vane structure and guide vane design method |
| CN111828336A (en) * | 2019-04-15 | 2020-10-27 | 孟想 | Ultra-silent zero-leakage nuclear main pump/fan compressor integrated design scheme |
| CN110500288A (en) * | 2019-08-15 | 2019-11-26 | 江苏金麟化工机械有限公司 | A kind of MODEL VERTICAL MULTISTAGE PUMP space guide vane body |
| CN110500288B (en) * | 2019-08-15 | 2024-05-28 | 江苏金麟化工机械有限公司 | Vertical multistage pump space guide vane body |
| CN112196832A (en) * | 2020-10-26 | 2021-01-08 | 江苏大学 | Guide vane body with flow distribution sheet |
| CN115163542A (en) * | 2022-07-28 | 2022-10-11 | 江苏大学 | Nuclear reactor main pump with shedding-inhibiting scroll plate |
| CN115163542B (en) * | 2022-07-28 | 2024-05-03 | 江苏大学 | Nuclear reactor main pump with vortex plate capable of inhibiting falling off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140307 |