CN106567859B - One seed nucleus main pump spherical shape pumping chamber - Google Patents
One seed nucleus main pump spherical shape pumping chamber Download PDFInfo
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- CN106567859B CN106567859B CN201610970196.6A CN201610970196A CN106567859B CN 106567859 B CN106567859 B CN 106567859B CN 201610970196 A CN201610970196 A CN 201610970196A CN 106567859 B CN106567859 B CN 106567859B
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- pumping chamber
- main pump
- guider
- core main
- flow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a seed nucleus main pump spherical shape pumping chambers, refer in particular to a kind of core main pump ball-type pumping chamber with pumping chamber guider, belong to field of fluid machinery.The present invention is from control mixed-flow core main pump spherical shape pumping chamber diffuser tail portion return-flow structure, it is proposed a kind of mixed-flow core main pump spherical shape pumping chamber with pumping chamber guider, two panels guide vane is increased close to spherical shell outlet tube tail portion on spherical shell back shroud, constitute pumping chamber guider, the return-flow structure for improving shell outlet tube tail portion, controls the distribution in enclosure interior flow field.It is relatively simple reasonable that its shell structure changes, and is easy to implement on process operation, and effectively reduce the intracorporal hydraulic loss of shell, further improves the performance of core main pump.
Description
Technical field
The present invention relates to a seed nucleus main pump spherical shape pumping chambers, refer in particular to a kind of core main pump ball with pumping chamber guider
Type pumping chamber, belongs to field of fluid machinery.
Background technique
Nuclear reactor primary coolant pump, also known as core main pump are unique high-speed rotating machines in nuclear island, are reactors
Heart.Because of its rigorous service condition, and its long-term continuous failure-free operation is required, therefore the safety and reliability of core main pump is wanted
Significantly larger than common mixed-flow pump has very big difference with common mixed-flow pump so as to cause its structure and design.Especially for guarantor
The spherical shell demonstrate,proving the intensity of pump case and using, internal flow situation complex cause its efficiency than commonly using spiral
The efficiency of the water pump of shape spiral case wants low.
The variation of impeller and guide vane design parameter is focused primarily upon to hydraulic performance for the research of core main pump in recent years
Influence, but the research influenced about pumping chamber on hydraulic performance is actually rare.Xu Shiming, Zhang Dongjun et al. are once to pump case pair
Research was done in the influence of core main pump performance, and in core main pump, guide vane and spherical shell are the carriers of energy conversion, after grasping its matching
Flow behavior can be effectively controlled internal flow loss.Studies have shown that in shell diffuser tail portion, it may appear that one large range of
Low-pressure area causes enclosure interior flow losses to generate reflux at this position.Have to realize to mixed-flow pump internal flow
Effect control to improve the efficiency and stability of energy transport and conversion between hydraulic part and fluid, therefore controls mixed flow pump case
Interior bad fluidal texture is of great significance to the performance for improving pump.
Summary of the invention
The present invention proposes that one kind has from control mixed-flow core main pump spherical shape pumping chamber diffuser tail portion return-flow structure
The mixed-flow core main pump spherical shape pumping chamber of pumping chamber guider, close to spherical shell outlet tube tail portion on spherical shell back shroud
Two panels guide vane is increased, pumping chamber guider is constituted, improves the return-flow structure of shell outlet tube tail portion, controls in shell
The distribution in portion flow field.It is relatively simple reasonable that its shell structure changes, and is easy to implement on process operation, and effectively reduce shell
Intracorporal hydraulic loss further improves the performance of core main pump.
The present invention proposes a kind of core main pump spherical shape pumping chamber with pumping chamber guider.
The spherical pumping chamber with pumping chamber guider includes radial vane, spherical shell and pumping chamber guider, is somebody's turn to do
Pumping chamber guider is located at close to spherical shell outlet tube, and after the gate vane channel A of face shell outlet tube, by two panels water conservancy diversion
Blade is constituted, and guide vane is connected with back shroud, is axially aligned on the outside of the guide vane front end and guide vane back shroud.Water conservancy diversion leaf
The inlet side of piece and the outlet side radially aligned of guide vane.
Advantage for present invention is: from control core main pump spherical shape pumping chamber diffuser tail portion return-flow structure, adopting
The core main pump spherical shape pumping chamber of apparatus pressure water room guider.It is sent out for flowing in outlet tube bottom gate vane channel A near exit
Raw large scale separation, guides the medium flowed out from gate vane channel A by guider, so as to improve the fluidal texture at this position,
The backflow phenomenon for weakening position controls the distribution in enclosure interior flow field, reduces the hydraulic loss in pumping chamber, to reach
The purpose of mixed-flow core main pump efficient operation.In terms of processing, simple operability is also the advantages of it has.
Detailed description of the invention
Fig. 1 is the mixed-flow core main pump shaft schematic cross-section of traditional no pumping chamber guider.
Fig. 2 is the mixed-flow core main pump axial plane schematic diagram of traditional no pumping chamber guider.
Fig. 3 is the core main pump spherical shape pumping chamber shaft section schematic diagram with pumping chamber guider.
Fig. 4 is the core main pump spherical shape pumping chamber axial plane schematic diagram with pumping chamber guider.
1, radial vane；2, spherical shell；3, pumping chamber guider；4, impeller；5, back shroud；6, front shroud；
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 and Fig. 2 gives mixed-flow core main pump shaft section and the central cross-section signal of traditional no pumping chamber guider
Figure.There is figure it is found that traditional mixed-flow core main pump pumping chamber includes radial vane 1 and spherical shell 2.
Fig. 3 and Fig. 4 gives the mixed-flow core main pump spherical shape pumping chamber proposed by the present invention with pumping chamber guider
Shaft section and central cross-section schematic diagram, as seen from the figure: this have the mixed-flow core main pump spherical shape pumping chamber of pumping chamber guider by
Radial vane 1, spherical shell 2 and pumping chamber guider 3 form, which, which is located at, goes out liquid close to spherical shell 2
Near pipe, and after the gate vane channel a of face spherical shell outlet tube, because gate vane channel a is located at outlet tube bottom, flowing exists
Large scale separation occurs herein, the medium a part passed out flows out spherical shell 2 from outlet tube, and another part is then in spherical shape
It is recycled in shell 2.Guider main purpose in the present invention is to reduce the ratio of the medium circulated in spherical shell 2,
To reduce flow losses in spherical shell 2.Pumping chamber guider 3 is made of two panels guide vane, guide vane and back shroud 5
It is connected, is axially aligned on the outside of the guide vane front end and guide vane back shroud 5, the inlet side of guide vane and going out for radial vane 1
Mouth side radially aligned.
Means are calculated to traditional core main pump and the core for matching the spherical pumping chamber with pumping chamber guider using CFD numerical value
Main pump has carried out performance prediction comparison, (the Q/Q at design point0=1.0), using the spherical pumping chamber with pumping chamber guider
Core main pump compare traditional core main pump, lift is basically unchanged, and efficiency increases by 0.75 percentage point.Therefore present invention improves pressures
The fluidal texture of water chamber outlet tube tail portion, reduces the flow losses inside pumping chamber, to further improve core main pump
Performance.
Claims (1)
1. a seed nucleus main pump spherical shape pumping chamber, including radial vane, spherical shell, it is characterised in that: be additionally provided with pumping chamber guiding
Device, the pumping chamber guider are located at close to spherical shell outlet tube, and after the gate vane channel A of face shell outlet tube, by two
Piece guide vane is constituted；The guide vane of pumping chamber guider is connected with back shroud；The guide vane front end of pumping chamber guider
It is axially aligned on the outside of guide vane back shroud；The inlet side of the guide vane of pumping chamber guider and the outlet side of radial vane are radial
Alignment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970196.6A CN106567859B (en) | 2016-11-04 | 2016-11-04 | One seed nucleus main pump spherical shape pumping chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970196.6A CN106567859B (en) | 2016-11-04 | 2016-11-04 | One seed nucleus main pump spherical shape pumping chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106567859A CN106567859A (en) | 2017-04-19 |
| CN106567859B true CN106567859B (en) | 2019-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610970196.6A Active CN106567859B (en) | 2016-11-04 | 2016-11-04 | One seed nucleus main pump spherical shape pumping chamber |
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| Country | Link |
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| CN (1) | CN106567859B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120314A (en) * | 2017-06-02 | 2017-09-01 | 哈尔滨电气动力装备有限公司 | Axle envelope formula core main pump pumping chamber |
| CN109236640B (en) * | 2018-09-28 | 2021-04-06 | 浙江大学 | High-performance vane hydraulic pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB419544A (en) * | 1934-01-12 | 1934-11-14 | G & J Weir Ltd | Improvements in centrifugal pumps |
| US20050254941A1 (en) * | 2004-05-06 | 2005-11-17 | Hitachi Industries Co., Ltd. | Inlet casing and suction passage structure |
| CN203239626U (en) * | 2013-03-07 | 2013-10-16 | 江苏大学 | AP1000 core main pump with long-short vane guiding vanes |
| CN204283996U (en) * | 2014-11-05 | 2015-04-22 | 江苏大学 | A kind of core main pump |
-
2016
- 2016-11-04 CN CN201610970196.6A patent/CN106567859B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB419544A (en) * | 1934-01-12 | 1934-11-14 | G & J Weir Ltd | Improvements in centrifugal pumps |
| US20050254941A1 (en) * | 2004-05-06 | 2005-11-17 | Hitachi Industries Co., Ltd. | Inlet casing and suction passage structure |
| CN203239626U (en) * | 2013-03-07 | 2013-10-16 | 江苏大学 | AP1000 core main pump with long-short vane guiding vanes |
| CN204283996U (en) * | 2014-11-05 | 2015-04-22 | 江苏大学 | A kind of core main pump |
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| Publication number | Publication date |
|---|---|
| CN106567859A (en) | 2017-04-19 |
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