CN201934387U - Pump shell structure of high-efficiency centrifugal pump - Google Patents
Pump shell structure of high-efficiency centrifugal pump Download PDFInfo
- Publication number
- CN201934387U CN201934387U CN 201020654754 CN201020654754U CN201934387U CN 201934387 U CN201934387 U CN 201934387U CN 201020654754 CN201020654754 CN 201020654754 CN 201020654754 U CN201020654754 U CN 201020654754U CN 201934387 U CN201934387 U CN 201934387U
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- pump
- volute
- water absorption
- chamber
- absorption chamber
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Abstract
The utility model relates to a fluid machine, i.e. a pump shell structure of a centrifugal pump, in particular to a pump shell structure of a single-stage centrifugal pump, which comprises a water absorption chamber and a double-volute pressurized water chamber. The pump shell structure is characterized in that the water absorption chamber has a semi-spiral structure, the cross-sectional area of the water absorption chamber is uniformly increased along the circumferential direction, and the double-volute pressurized water chamber adopts a spiral water absorption chamber and comprises two symmetric single volutes with spacing of 180 degrees. The utility model has the advantages that the water absorption chamber adopts the semi-spiral structure, so that fluid can flow into an impeller at a relatively constant speed, and water losses caused by fluid pre-whirling are eliminated. Since the double-volute pressurized water chamber adopts the spiral water absorption chamber, the special radial force of a single-volute pump is eliminated. At non-optimal operating points, the efficiency of the double-volute structure is 3-5 percent higher than the efficiency of the single-volute structure, the range of the high-efficiency zone of the pump is enlarged, the operating efficiency of the pump is increased, significant effect can be achieved, the power cost can be reduced, and the requirements of energy conservation and environmental protection can be satisfied.
Description
Technical field
The utility model relates to a kind of fluid machinery, i.e. the pump shell structure of centrifugal pump, particularly a kind of single stage centrifugal pump pump shell structure.
Background technique
In existing single-stage pump pump shell structure, the pump case of single-stage pump is that the spirality pumping chamber by annular suction chamber and single spiral case constitutes.Liquid is that the form with sudden enlargement enters annular space in annular suction chamber, transfers to the form of sudden contraction again afterwards axially entering impeller, has to impact and whirlpool loses when entering impeller, and the loss of liquid in this process is bigger.Because the operating conditions of pump is more complicated and changeable, during optimal working point when the operating conditions off-design, the pumping chamber of single worm frame will produce the radial force that acts on impeller, this radial force can cause the vibration of rotor part, quicken the wearing and tearing of seal ring and axle sleeve, even axle is destroyed because of tired.
Summary of the invention
Pump case to existing single stage centrifugal pump of the present utility model improves, and its objective is the hydraulic loss that reduces annular suction chamber and single volute pumping chamber, reduces the vibration and the noise of pump in service, improves the working efficiency and the running stability of pump.The utility model designs a kind of efficient centrifugal pump pump shell structure, comprise suction chamber and double volute pumping chamber, it is characterized in that: suction chamber adopts the half-spiral structure, it is big that suction chamber cross-sectional area along the circumferential direction evenly becomes, the double volute pumping chamber is the spirality suction chamber, by two single spiral cases be separated by 180 the degree be symmetrical arranged.The utility model has the advantages that suction chamber adopts the half-spiral structure, flow velocity is more even when making liquid enter impeller, has eliminated the hydraulic loss that liquid is prewhirled and caused.The spirality pumping chamber of double volute structure has been eliminated the distinctive radial force of single volute pump, and when non-optimal working point, the efficient of double volute structure is higher more than 3% ~ 5% than single spiral case, has enlarged the scope in the efficient district of pump.Improved the working efficiency of pump, and effect is remarkable, has reduced electric cost, meets energy conservation and environment protection.
Description of drawings
Below in conjunction with accompanying drawing and example the utility model is elaborated.
Accompanying drawing 1 is a single-stage pump pump shell structure schematic representation of the present utility model, and Fig. 2 is a suction chamber floor map among Fig. 1,
Fig. 3 is a double volute pumping chamber floor map, and Fig. 4 is the AA sectional drawing of Fig. 3.
Embodiment
It is big that suction chamber cross-sectional area along the circumferential direction evenly becomes, so before liquid enters impeller, because area of passage changes evenly, the change in flow even variation, and transfer to gradually and axially enter impeller, vortex eliminated, improve the mobility status of liquid, reduced hydraulic loss.
And the double volute pumping chamber adopts the spirality suction chamber, promptly by two single spiral cases be separated by 180 the degree be symmetrical arranged, make the mutual balance of the radial force that acts on the impeller, the radial force of pump in whole operating range is almost nil, has also enlarged the scope of the efficient Operational Zone of pump simultaneously through evidence.
Claims (1)
1. efficient centrifugal pump pump shell structure, comprise suction chamber and double volute pumping chamber, it is characterized in that: suction chamber adopts the half-spiral structure, it is big that suction chamber cross-sectional area along the circumferential direction evenly becomes, the double volute pumping chamber is the spirality suction chamber, by two single spiral cases be separated by 180 the degree be symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020654754 CN201934387U (en) | 2010-12-13 | 2010-12-13 | Pump shell structure of high-efficiency centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020654754 CN201934387U (en) | 2010-12-13 | 2010-12-13 | Pump shell structure of high-efficiency centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934387U true CN201934387U (en) | 2011-08-17 |
Family
ID=44445906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020654754 Expired - Fee Related CN201934387U (en) | 2010-12-13 | 2010-12-13 | Pump shell structure of high-efficiency centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934387U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN103758787A (en) * | 2014-01-07 | 2014-04-30 | 钱向阳 | Pump inflow runner |
| CN106762784A (en) * | 2016-12-06 | 2017-05-31 | 芜湖市容川机电科技股份有限公司 | Spheroidal graphite cast-iron drilling platforms high pressure cylinders |
| CN107100856A (en) * | 2017-06-08 | 2017-08-29 | 江苏河海给排水成套设备有限公司 | A kind of heavy duty detergent high suction depth formula dry type double entry pump |
| CN107477031A (en) * | 2017-09-20 | 2017-12-15 | 四川宇康供水设备有限公司 | A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump |
| CN112343863A (en) * | 2020-11-26 | 2021-02-09 | 上海凯泉泵业（集团）有限公司 | Volute structure |
-
2010
- 2010-12-13 CN CN 201020654754 patent/CN201934387U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN102966601B (en) * | 2012-12-11 | 2015-08-12 | 江苏大学 | A kind of pump semi-spiral suction chamber Hydraulic Design Method |
| CN103758787A (en) * | 2014-01-07 | 2014-04-30 | 钱向阳 | Pump inflow runner |
| CN103758787B (en) * | 2014-01-07 | 2017-01-04 | 钱向阳 | A kind of pump inflow runner |
| CN106762784A (en) * | 2016-12-06 | 2017-05-31 | 芜湖市容川机电科技股份有限公司 | Spheroidal graphite cast-iron drilling platforms high pressure cylinders |
| CN107100856A (en) * | 2017-06-08 | 2017-08-29 | 江苏河海给排水成套设备有限公司 | A kind of heavy duty detergent high suction depth formula dry type double entry pump |
| CN107100856B (en) * | 2017-06-08 | 2024-01-09 | 江苏河海给排水成套设备有限公司 | High-efficient formula dry-type double suction pump that absorbs highly |
| CN107477031A (en) * | 2017-09-20 | 2017-12-15 | 四川宇康供水设备有限公司 | A kind of anti-cavitation hydraulic chamber suitable for centrifugal pump |
| CN112343863A (en) * | 2020-11-26 | 2021-02-09 | 上海凯泉泵业（集团）有限公司 | Volute structure |
| CN112343863B (en) * | 2020-11-26 | 2024-05-14 | 上海凯泉泵业（集团）有限公司 | Volute structure |
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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: 20110817 Termination date: 20181213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |