CN202545343U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN202545343U CN202545343U CN2012202134083U CN201220213408U CN202545343U CN 202545343 U CN202545343 U CN 202545343U CN 2012202134083 U CN2012202134083 U CN 2012202134083U CN 201220213408 U CN201220213408 U CN 201220213408U CN 202545343 U CN202545343 U CN 202545343U
- Authority
- CN
- China
- Prior art keywords
- impeller
- pump
- main shaft
- channel
- centrifugal pump
- 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 - Fee Related
Links
Images
Abstract
The utility model relates to a centrifugal pump which comprises a pump body, an impeller and a main shaft, wherein the main shaft is arranged in the pump body; the impeller is fixed on the main shaft; an suction chamber is connected to an impeller inlet; the pump body is provided with a cavity containing the impeller; a balance hole is an L-shaped channel formed by a horizontal hole channel and a vertical hole channel; the horizontal hole channel of the balance hole is arranged on the contact surface between the impeller and the main shaft; the vertical hole channel of the balance hole is arranged on the impeller; the inlet of the balance hole is arranged on the back of the impeller root; the vertical hole channel of the balance hole extends to an outlet channel position at the cambered bending part of the pump liquid flow channel; and the balance hole is communicated with the outlet channel. The utility model avoids the problem of lower pump efficiency due to poor balance hole structure arranged in the existing centrifugal pump, and can enhance the cavitation property and hydraulic efficiency of the centrifugal pump.
Description
One, technical field:
The utility model relates to the rotating equipment centrifugal pump of the fed sheet of a media of petrochemical enterprise widespread usage, what be specifically related to is a kind of centrifugal pump.
Two, background technique:
Centrifugal pump generally comprises the pump housing, impeller, suction chamber, main shaft, is provided with main shaft in the pump housing, and impeller is fastened on the main shaft; Suction chamber is connected impeller inlet, and the pump housing has the cavity that holds impeller, for equilibrium centrifugation pump axial force; Through on impeller, opening equalizing orifice; Like this, not only can equilibrium centrifugation pump axial force, the reliability of centrifugal pump is improved.The equalizing orifice of existing centrifugal pump is out the straight hole on impeller; The import of equalizing orifice is at the back side of impeller, and the outlet of equalizing orifice communicates with the inlet channel of centrifugal pump liquid chunnel arc bending place, and is as shown in Figure 1; Pump liquid chunnel 4 is curved by inlet channel, arc, that outlet passage 5 forms runners; Flow direction in the inlet channel is level basically, and after bending through arc, the flow direction in the outlet passage is exactly vertical basically; Because flow direction and centrifugal pump entrance point flow in the equalizing orifice 3 are in the opposite direction; Flow in the equalizing orifice 3 can produce pump inlet end flow flow condition interferes, and has reduced the cavitation performance and the hydraulic efficiency of centrifugal pump, and the overall performance of pump is descended.
Three, summary of the invention:
The purpose of the utility model provides a kind of centrifugal pump, and this centrifugal pump is used to solve the problem that the axial force balance hole that has centrifugal pump now reduces pump efficiency.
The utility model solves the technological scheme that its technical problem adopted: this centrifugal pump comprises the pump housing, impeller, main shaft, is provided with main shaft in the pump housing, and impeller is fastened on the main shaft, and suction chamber is connected impeller inlet, and the pump housing has the cavity that holds impeller; Equalizing orifice is the L type passage that is formed by horizontal hole and vertical channel; The horizontal hole of equalizing orifice is arranged on the surface of contact of impeller and main shaft; The vertical channel of equalizing orifice is arranged on the impeller; The inlet of equalizing orifice is arranged on the back side of impeller root, and the vertical channel of equalizing orifice extends to the outlet passage position of pump liquid chunnel arc bending place, and equalizing orifice communicates with outlet passage.
Beneficial effect:
1, the utility model is in operation process; Flow direction in the equalizing orifice upwards; Centrifugal pump entrance point flow direction also makes progress behind the arc bending place through the pump liquid chunnel; Flow in the equalizing orifice directly imports in the outlet passage of pump liquid chunnel, has avoided horizontal flow and the problem that the different pump efficiencys that cause of the interior flow direction of centrifugal pump liquid chunnel reduce in the former equalizing orifice, and has improved the cavitation performance and the hydraulic efficiency of centrifugal pump.
2, the utility model axial force of equilibrium centrifugation pump effectively is improved the mechanical efficiency of centrifugal pump.
Four, description of drawings:
Fig. 1 is the structural representation of existing centrifugal pump equalizing orifice;
Fig. 2 is the structural representation of the utility model.
1 impeller, 2 main shafts, 3 equalizing orifices, 4 liquid chunnels, 5 outlet passages.
Five, embodiment:
Below in conjunction with accompanying drawing the utility model is done further explanation:
As shown in Figure 2, this centrifugal pump comprises the pump housing, impeller 1, main shaft 2, is provided with main shaft 2 in the pump housing; Impeller 1 is fastened on the main shaft 2; Suction chamber is connected impeller 1 import, and equalizing orifice 3 is the L type passages that formed by horizontal hole and vertical channel, and the horizontal hole of equalizing orifice 3 is arranged on the surface of contact of impeller 1 and main shaft 2; The vertical channel of equalizing orifice 3 is arranged on the impeller 1; The vertical channel of equalizing orifice 3 extends to outlet passage 5 positions of pump liquid chunnel 4 arc bending places, and pump liquid chunnel arc bending place connects as one the inlet channel of pump liquid chunnel 4 and the outlet passage 5 of pump liquid chunnel, through L type passage; Flow is flowed through to be confined to behind the equalizing orifice 3 upwards and is flowed, and has avoided the problem of the different pump efficiencys reductions that cause of flow direction in horizontal flow and the centrifugal pump liquid chunnel in the traditional equalizing orifice; The inlet of equalizing orifice 3 is arranged on the back side of impeller 1 root, and equalizing orifice 3 outlets are the jointing place of the outlet passage 5 of equalizing orifice vertical channel and pump liquid chunnel arc bending place.
During the utility model running, centrifugal pump entrance point flow process pump liquid chunnel arc is upwards to flow behind the bending place; The liquid that the inlet in self balancing hole 3 flows into, the flow direction also makes progress behind the vertical channel of equalizing orifice 3, when two bursts of flows are converged; All continue upwards to flow; Well balance the axial force of centrifugal pump, make the good reliability of centrifugal pump, correspondingly also prolonged the life-span of centrifugal pump.
Claims (1)
1. centrifugal pump, it is characterized in that: this centrifugal pump comprises the pump housing, impeller (1), main shaft (2), is provided with main shaft (2) in the pump housing, and impeller (1) is fastened on the main shaft (2), and suction chamber is connected impeller (1) import, and the pump housing has the cavity that holds impeller (1); Equalizing orifice (3) is the L type passage that is formed by horizontal hole and vertical channel; The horizontal hole of equalizing orifice (3) is arranged on the surface of contact of impeller (1) and main shaft (2); The vertical channel of equalizing orifice (3) is arranged on the impeller (1); The inlet of equalizing orifice (3) is arranged on the back side of impeller (1) root, and the vertical channel of equalizing orifice (3) extends to outlet passage (5) position of pump liquid chunnel arc bending place, and equalizing orifice (3) communicates with outlet passage (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202134083U CN202545343U (en) | 2012-05-05 | 2012-05-05 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202134083U CN202545343U (en) | 2012-05-05 | 2012-05-05 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545343U true CN202545343U (en) | 2012-11-21 |
Family
ID=47165986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202134083U Expired - Fee Related CN202545343U (en) | 2012-05-05 | 2012-05-05 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545343U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277334A (en) * | 2013-06-04 | 2013-09-04 | 江苏大学 | Axial force balance device for centrifugal residual heat removal pump for nuclear power |
| KR20140108389A (en) * | 2013-02-26 | 2014-09-11 | 현대중공업 주식회사 | Centrifugal pump having balancing holes |
| RU2550564C2 (en) * | 2013-05-06 | 2015-05-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | Centrifugal pump |
| CN106194822A (en) * | 2016-09-15 | 2016-12-07 | 浙江理工大学 | A kind of centrifugal pump closed type impeller and method for designing thereof |
| WO2021133413A1 (en) * | 2019-12-23 | 2021-07-01 | Halliburton Energy Services, Inc. | A gas resistant impeller having lower upthrust for use with a centrifugal pump |
| CN116816684A (en) * | 2023-08-29 | 2023-09-29 | 成都永益泵业股份有限公司 | Horizontal centrifugal pump mechanical seal cavity capable of preventing medium particles from accumulating and wearing and horizontal centrifugal pump |
-
2012
- 2012-05-05 CN CN2012202134083U patent/CN202545343U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140108389A (en) * | 2013-02-26 | 2014-09-11 | 현대중공업 주식회사 | Centrifugal pump having balancing holes |
| RU2550564C2 (en) * | 2013-05-06 | 2015-05-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | Centrifugal pump |
| CN103277334A (en) * | 2013-06-04 | 2013-09-04 | 江苏大学 | Axial force balance device for centrifugal residual heat removal pump for nuclear power |
| CN103277334B (en) * | 2013-06-04 | 2016-05-25 | 江苏大学 | A kind of nuclear power goes out balance unit for pump axial force with centrifugal type residual hot type |
| CN106194822A (en) * | 2016-09-15 | 2016-12-07 | 浙江理工大学 | A kind of centrifugal pump closed type impeller and method for designing thereof |
| CN106194822B (en) * | 2016-09-15 | 2024-03-08 | 浙江理工大学 | Closed impeller of centrifugal pump and design method thereof |
| WO2021133413A1 (en) * | 2019-12-23 | 2021-07-01 | Halliburton Energy Services, Inc. | A gas resistant impeller having lower upthrust for use with a centrifugal pump |
| US11293445B2 (en) | 2019-12-23 | 2022-04-05 | Halliburton Energy Services, Inc. | Gas resistant impeller having lower upthrust for use with a centrifugal pump |
| CN116816684A (en) * | 2023-08-29 | 2023-09-29 | 成都永益泵业股份有限公司 | Horizontal centrifugal pump mechanical seal cavity capable of preventing medium particles from accumulating and wearing and horizontal centrifugal pump |
| CN116816684B (en) * | 2023-08-29 | 2023-11-17 | 成都永益泵业股份有限公司 | Horizontal centrifugal pump mechanical seal cavity capable of preventing medium particles from accumulating and wearing and horizontal centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202545343U (en) | Centrifugal pump | |
| CN203527141U (en) | Center water cooling structure of mechanical spindle | |
| CN203783910U (en) | Waterpower oil-submerged pump | |
| CN204677444U (en) | A kind of multistage centrifugal pump | |
| CN201554693U (en) | Self-balancing section horizontal pumping device | |
| CN202500816U (en) | Open type rotary jet pump | |
| CN202579208U (en) | Improved magnetic pump | |
| CN201627724U (en) | Vertical multi-stage centrifugal pump | |
| CN201546966U (en) | Centrifugal pump | |
| CN204783724U (en) | Water pump under multistage multiple exit liquid | |
| CN202673696U (en) | Middle-high concentration paper pulp centrifugal pump | |
| CN204041528U (en) | A kind of multistage pump of automatically balancing axial force | |
| CN101718282B (en) | Centrifugal pump | |
| CN102913478A (en) | Multilevel centrifuging vortex type novel impeller structure of single impeller | |
| CN202545285U (en) | Impeller three-flow-direction configuration electric submersible pump connecting section with pressure relief holes | |
| CN202157969U (en) | Multi-stage multi-outlet suspension arm type centrifugal pump | |
| CN201953652U (en) | High pressure hydraulic vane pump | |
| CN204041533U (en) | A kind of axially single-ended suction bilateral discharge opeing impeller | |
| CN201428648Y (en) | Multi-outlet volute shell of pump | |
| CN203770154U (en) | Centrifugal pump | |
| CN202883466U (en) | Four-suction middle open centrifugal pump | |
| CN202991644U (en) | Vertical single-stage single-suction submersible centrifugal pump body with symmetric dual-outlet volute chambers | |
| CN204327522U (en) | Single suction entrance double suction self balancing submersible pump | |
| CN103016404A (en) | Symmetric double-outlet vortex chamber pump body of vertical single-stage single-suction submerged centrifugal pump | |
| CN203879759U (en) | Large-flow high-lift multi-stage shield pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20130505 |