CN203412813U - Pump with double-layer sleeve type inlet and outlet channels - Google Patents
Pump with double-layer sleeve type inlet and outlet channels Download PDFInfo
- Publication number
- CN203412813U CN203412813U CN201320518685.XU CN201320518685U CN203412813U CN 203412813 U CN203412813 U CN 203412813U CN 201320518685 U CN201320518685 U CN 201320518685U CN 203412813 U CN203412813 U CN 203412813U
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- CN
- China
- Prior art keywords
- pump
- runner
- inner tube
- stator
- impeller
- 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 - Lifetime
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Abstract
The utility model discloses a pump with double-layer sleeve type inlet and outlet channels. The pump comprises an outer pipe (1), an inner pipe (4) and an impeller (3), wherein the inner pipe (4) is arranged inside the outer pipe (1), and the impeller (3) is connected with a pump shaft and arranged inside the inner pipe (4). An annular cavity between the outer pipe (1) and an inner pipe (2) forms the first pump inlet and outlet channel, and the inner pipe (2) forms the second pump inlet and outlet channel communicated with the first pump inlet and outlet channel. Due to the adoption of the structure, the pump is simple and compact in overall structure and convenient to obtain. Pump inlet and outlet pipelines are omitted, and therefore a fluid system is arranged compactly, and meanwhile the potential hazard that the long pipelines are damaged is eliminated.
Description
Technical field
The utility model relates to a kind of pump, specifically a kind of pump with Double-layer sleeve-type import and export runner.
Background technique
Nuclear-energy plant reactor coolant pump adopts the scroll casing type pump housing or the torispherical pump housing conventionally, and by fed sheet of a media, by axial suction, radially discharge, inlet pipeline, outlet conduit are two independent pipelines, all as the pressure boundary of reactor coolant loop.Said structure is because pump inlet pipeline, outlet conduit are dispersed placement form, and pipeline takes up room greatly, cannot realize the compact Layout of pump and fluid system, has the hidden danger that piping failure accident occurs simultaneously when there is the outside destroy such as earthquake.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of pump that Double-layer sleeve-type is imported and exported runner that has is provided, energy compact Layout when it is connected with fluid system, and can eliminate the hidden danger of piping failure accident.
The purpose of this utility model is achieved through the following technical solutions: a kind of pump with Double-layer sleeve-type import and export runner, comprise outer tube, inner tube and impeller, and within the outer tube, described impeller is connected with pump shaft and is arranged in inner tube in described inner tube setting; Ring cavity between described outer tube and inner tube forms the first pump and imports and exports runner, and the second pump that forms connection the first pump import and export runner in described inner tube is imported and exported runner.During this programme application, be connected with the container of fluid system, in the container being connected, also need to arrange sleeve structure.The utility model, when specifically arranging, can be set to concentric or eccentric scheme according to the structural requirement outer tube of the fluid system container being connected with pump and inner tube, and outer tube and inner tube can require to be designed to different cross section shape according to hydraulic performance.Wherein, the structural type of impeller, blade quantity, sense of rotation adopt existing Hydraulic Design Method design to determine, outer tube and inner tube sectional shape are determined by existing Hydraulic Design Method design according to flow, lift, the definite impeller type (as centrifugal pump, mixed flow pump, axial-flow pump) of rotating speed.During the utility model application, runner imported and exported by the first pump and the second pump import and export runner all can be used as inlet channel or outlet flow, when the first pump is imported and exported runner as inlet channel, the second pump is imported and exported runner as outlet flow, and the first pump is while importing and exporting runner as outlet flow, the second pump is imported and exported runner as inlet channel.If the first pump is imported and exported runner as inlet channel, during pump operation, fluid is imported and exported runner from the first pump and is sucked, through 180 ° turn round and by the supercharging of impeller convection cell after from the second pump, import and export runner and discharge; If the second pump is imported and exported runner as inlet channel, during pump operation, fluid is imported and exported runner from the second pump and is sucked, and after the supercharging of impeller convection cell, through 180 °, turns round and from the first pump, imports and exports runner and discharge.
In order to improve pump, import and export the mobile stability of fluid, in the runner of described the first pump import and export runner and the transition of the second pump import and export runner, be provided with the first stator, described the second pump is imported and exported in runner and is provided with the second stator, the first stator is all connected with inner tube with the second stator, in the runner region of described impeller between the first stator and the second stator.
For the ease of install arranging, as preferably, the termination of described inner tube one end and the region between pump body structure form the transition runner that the first pump is imported and exported runner and the second pump import and export runner.
Compared with prior art, the utlity model has following beneficial effect: (1) import and export runner of the present utility model adopts Double-layer sleeve-type to import and export scheme, in the utility model when application, can be realized with other containers of fluid system and being directly connected, thereby realizes the compact Layout of pump and fluid system.
(2) the utility model has been cancelled the import and export pipeline of pump, has eliminated the hidden danger that damaged accident appears in pipeline.
(3) the utility model has been cancelled the pump shell structure of conventional pump, and structure is simplified, and weight, size reduce.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structural representation;
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram.
In accompanying drawing, the corresponding name of reference character is called: 1, outer tube, the 2, first stator, 3, impeller, 4, inner tube, the 5, second stator.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.
Embodiment
As shown in Figures 1 and 2, a kind of pump with Double-layer sleeve-type import and export runner, comprise pump body structure, outer tube 1, inner tube 4, impeller 3, the first stator 2 and the second stator 5, wherein, outer tube 1 is connected with pump body structure, inner tube 4 is arranged in outer tube 1, and the first stator 2 is straight stator, and the second stator 5 is space curved surface stator.Ring cavity between outer tube 1 and inner tube 2 forms the first pump and imports and exports runner, and the interior formation of inner tube 2 is connected the second pump import and export runner that the first pump is imported and exported runner.The termination of inner tube 4 one end and the region between pump body structure form the transition runner that the first pump is imported and exported runner and the second pump import and export runner, be that outer tube 1 is provided with the corner of inner tube 4 transition runner that the first pump is imported and exported runner and the second pump import and export runner, the first stator 2 is arranged in this transition runner, the second stator 5 is arranged on the second pump and imports and exports in runner, and the first stator 2 is all connected with inner tube 4 with the second stator 5.Impeller 3 is connected with pump shaft, and impeller 3 is arranged in inner tube 4 and in the runner region between the first stator 2 and the second stator 5.Wherein, in the present embodiment, the specific speed of pump is 550, according to specific speed, by existing Hydraulic Design Method, determines that impeller 3 preferably adopts four-bladed mixed-flow impeller.
The present embodiment middle external tube 1 adopt equal diameter, etc. wall thickness cylindrical structure, there is preferably hydraulic performance, and be convenient to manufacturing.Inner tube 4 inwalls adopt with the cross section diameter of impeller 3 structure matching and expand gradually then diminishing structure, and inner tube 4 outer walls, for waiting outer gauge structure, meet hydraulic performance requirement and are convenient to manufacturing.
During the present embodiment application, the first pump is imported and exported runner as inlet channel, and the second pump is imported and exported runner as outlet flow.During pump operation, pump shaft impeller 3 is along overlooking counterclockwise rotation, fluid is sucked from outer tube 1 and the ring cavity of inner tube 4, at outer tube 1 with the corner of inner tube 4 by the first stator 2 current stabilizations, to control prewhirling of impeller 3 entrance flow fields, fluid enters after inner tube 4, by impeller 3 convection cell acting adherence pressures, then entering the second stator 5 in inner tube 4 is pressure energy by a part of kinetic transformation of fluid, improves the hydraulic efficiency of pump, and last fluid is discharged from inner tube.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other mode of executions that draw under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (3)
1. have Double-layer sleeve-type and import and export a pump for runner, it is characterized in that: comprise outer tube (1), inner tube (4) and impeller (3), described inner tube (4) is arranged in outer tube (1), described impeller (3) is connected with pump shaft and is arranged in inner tube (4); Ring cavity between described outer tube (1) and inner tube (2) forms the first pump and imports and exports runner, and the second pump that forms connection the first pump import and export runner in described inner tube (2) is imported and exported runner.
2. a kind of pump that Double-layer sleeve-type is imported and exported runner that has according to claim 1, it is characterized in that: in the runner of described the first pump import and export runner and the transition of the second pump import and export runner, be provided with the first stator (2), described the second pump is imported and exported in runner and is provided with the second stator (5), the first stator (2) is all connected with inner tube (4) with the second stator (5), and described impeller (3) is positioned at the runner region between the first stator (2) and the second stator (5).
3. a kind of pump that Double-layer sleeve-type is imported and exported runner that has according to claim 2, is characterized in that: the termination of described inner tube (4) one end and the region between pump body structure form the transition runner that the first pump is imported and exported runner and the second pump import and export runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518685.XU CN203412813U (en) | 2013-08-23 | 2013-08-23 | Pump with double-layer sleeve type inlet and outlet channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518685.XU CN203412813U (en) | 2013-08-23 | 2013-08-23 | Pump with double-layer sleeve type inlet and outlet channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412813U true CN203412813U (en) | 2014-01-29 |
Family
ID=49975702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320518685.XU Expired - Lifetime CN203412813U (en) | 2013-08-23 | 2013-08-23 | Pump with double-layer sleeve type inlet and outlet channels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438025A (en) * | 2013-08-23 | 2013-12-11 | 中国核动力研究设计院 | Pump with double-layer sleeve-type inlet and outlet flow channels |
-
2013
- 2013-08-23 CN CN201320518685.XU patent/CN203412813U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438025A (en) * | 2013-08-23 | 2013-12-11 | 中国核动力研究设计院 | Pump with double-layer sleeve-type inlet and outlet flow channels |
| CN103438025B (en) * | 2013-08-23 | 2017-02-15 | 中国核动力研究设计院 | Pump with double-layer sleeve-type inlet and outlet flow channels |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |