CN213981328U - Centrifugal pump impeller for inhibiting air mass retention - Google Patents
Centrifugal pump impeller for inhibiting air mass retention Download PDFInfo
- Publication number
- CN213981328U CN213981328U CN202023181836.6U CN202023181836U CN213981328U CN 213981328 U CN213981328 U CN 213981328U CN 202023181836 U CN202023181836 U CN 202023181836U CN 213981328 U CN213981328 U CN 213981328U
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- Prior art keywords
- centrifugal pump
- pump impeller
- air mass
- inhibiting
- air
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- 230000002401 inhibitory effect Effects 0.000 title claims description 16
- 230000014759 maintenance of location Effects 0.000 title claims description 6
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000000452 restraining effect Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a restrain centrifugal pump impeller that air pocket is detained, including centrifugal pump impeller body, centrifugal pump impeller body is provided with the back shroud, and the back shroud inboard evenly is provided with a plurality of blades along its circumference, and the equal rigid coupling of the suction surface of every blade has 3 at least restraint air pocket spare. The utility model relates to a restrain centrifugal pump impeller that air pocket is detained has solved the high air entrainment rate that exists among the prior art and has detained easy air pocket in the centrifugal pump impeller, leads to the problem that lift and efficiency descend suddenly.
Description
Technical Field
The utility model belongs to the technical field of fluid machinery equipment, concretely relates to restrain centrifugal pump impeller that air pocket is detained.
Background
The centrifugal pump has the characteristics of simple structure, wide range of lift and flow, easy operation and maintenance and the like, and is widely applied to the fields of water conservancy, power plants, agriculture and the like. However, in the process of delivering fluid substances by a pump, there are often multiphase flow conditions such as bubble flow due to the influence of pressure, temperature and other factors. Under the condition of bubble inflow, bubbles are converged and broken in the centrifugal pump, and the bubbles are accumulated to a certain degree to form air pockets or air bags which are retained in an impeller flow channel, so that the lift and the efficiency of the centrifugal pump are influenced, the performance of the centrifugal pump is reduced, and even the safety and the stability of the whole system are influenced. Therefore, the impeller capable of inhibiting the air mass from being retained is designed, and has important significance for crushing the air mass in the impeller under high air content and further improving the lift and the efficiency of the centrifugal pump.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a restrain centrifugal pump impeller that air pocket is detained has solved the high air content that exists among the prior art and has detained the easy air pocket in the centrifugal pump impeller, leads to the problem that lift and efficiency descend suddenly.
The utility model discloses the technical scheme who adopts is a centrifugal pump impeller who restraines air pocket and is detained, including centrifugal pump impeller body, centrifugal pump impeller body is provided with the back shroud, and the back shroud inboard evenly is provided with a plurality of blades along its circumference, and the equal rigid coupling of suction surface of every blade has 3 at least restraines air pocket spare.
The utility model discloses a characteristics still lie in:
the air mass restraining element is a triangular prism.
The distance between one end of the blade close to the air outlet of the rear cover plate and the adjacent air mass restraining piece is not more than 1/5 the length of the suction surface of the blade, and the distance between one end of the blade far away from the air outlet of the rear cover plate and the adjacent air mass restraining piece is not more than 3/5 the length of the suction surface of the blade.
The length of the bottom edge of the air mass restraining member is not greater than 1/15 of the length of the suction surface of the blade.
The spacing between adjacent trapped air mass members is no greater than 1/10 the length of the suction surface of the blade.
The height of the trapped air mass is no greater than 2/3 the height of the vanes.
The length of the edge of the air mass restraining member is not more than 2/5 the length of the suction surface of the blade.
The number of the blades is 4-7.
The utility model has the advantages that:
the utility model relates to a restrain centrifugal pump impeller that air pocket is detained sets up the zigzag structure at impeller blade suction surface, can play the velocity reduction effect of streaming to the motion air pocket on the one hand to reduce the impact pressure that the air pocket of being detained caused to the pump, on the other hand cuts up the air pocket of gathering in the impeller and cuts apart into little air pocket, washes away broken little air pocket through liquid, increases flow area, promotes the through-flow of liquid in the runner, thereby has improved centrifugal pump lift and efficiency.
Drawings
FIG. 1 is a schematic structural view of a centrifugal pump impeller for suppressing air mass retention according to the present invention;
FIG. 2 is a front view of a vane in a centrifugal pump impeller of the present invention for inhibiting air mass retention;
fig. 3 is a plan view of a vane in a centrifugal pump impeller according to the present invention, which suppresses air mass retention.
In the figure, 1 is a rear cover plate, 2 is an air mass restraining component, and 3 is a blade.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a restrain centrifugal pump impeller that air pocket is detained, the structure is as shown in figure 1, including centrifugal pump impeller body, centrifugal pump impeller body is provided with back shroud 1, and 1 inboard its circumference of following of back shroud evenly is provided with a plurality of blades 3, and the equal rigid coupling of suction surface of every blade 3 has 3 at least restraint air pocket spare 2.
Preferably, the air mass suppressing member 2 is a triangular prism.
Preferably, the distance d between one end of the blade 3 close to the air outlet of the rear cover plate 1 and the adjacent air mass restraining member 2 is not more than 1/5 of the length L of the suction surface of the blade 3, and the distance between one end of the blade 3 far away from the air outlet of the rear cover plate 1 and the adjacent air mass restraining member 2 is not more than 3/5 of the length L of the suction surface of the blade 3. As shown in fig. 2 and 3.
Preferably, the length of the bottom side of the air mass 2 is not greater than 1/15 of the length L of the suction surface of the blade 3.
Preferably, the spacing s between adjacent ones of the inhibiting air mass elements 2 is no greater than 1/10 of the length L of the suction surface of the blade 3.
Preferably, the height H of the air mass 2 is not greater than 2/3 of the height H of the blades 3.
Preferably, the length of the edge of the air mass 2 is not greater than 2/5 of the length L of the suction surface of the blade 3.
Preferably, the number of the blades 3 is 4-7.
The utility model relates to a restrain centrifugal pump impeller that air pocket is detained, its theory of operation as follows:
when the centrifugal pump conveys gas-liquid two-phase flow, the impeller rotates clockwise at high speed, the fluid medium rotates with the blades 3 and enters the rear cover plate 1, and the fluid medium generates centrifugal motion under the action of centrifugal force and flows to the outlet along the tangential direction of the circumferential rotation of the impeller. Because the influence of high gas content can be detained the air pocket in the impeller runner, influences the transport of liquid, and the utility model discloses an it is broken that the air pocket that restraines air pocket spare 2 can be detained in the impeller runner, disperses into little air pocket, along with liquid inflow impeller export, no longer blocks up the impeller runner for the flow of the fluid medium in the runner is more smooth, improves its flow velocity, has effectively avoided runner blocking phenomenon.
The utility model relates to a centrifugal pump impeller that restraines air pocket is through setting up the air pocket piece 2 of restraineing at impeller blade suction surface, has effectively reduced the impact pressure that the centrifugal pump receives, will detain the air pocket and break into the little air pocket in the centrifugal pump simultaneously, and the little air pocket is taken away by fluid medium to reach the purpose of transporting the medium; the through-flow of the fluid medium in the flow channel is effectively increased, the lift and the efficiency of the centrifugal pump are improved, and the performance and the operation stability of the centrifugal pump impeller are also enhanced.
Claims (8)
1. The utility model provides a centrifugal pump impeller that restraines air pocket and be detained, its characterized in that, includes centrifugal pump impeller body, centrifugal pump impeller body is provided with back shroud (1), back shroud (1) inboard evenly is provided with a plurality of blades (3) along its circumference, every the equal rigid coupling of suction surface of blade (3) has 3 at least restraines air pocket spare (2).
2. The centrifugal pump impeller for suppressing air mass stagnation according to claim 1, wherein said air mass suppressing member (2) is a triangular prism.
3. The centrifugal pump impeller for inhibiting air mass retention according to claim 2, wherein the end of said vane (3) near the air outlet of the back shroud (1) is spaced from the adjacent air mass inhibiting member (2) by a distance not greater than 1/5 the length of the suction surface of the vane (3), and the end of said vane (3) far from the air outlet of the back shroud (1) is spaced from the adjacent air mass inhibiting member (2) by a distance not greater than 3/5 the length of the suction surface of the vane (3).
4. A centrifugal pump impeller for inhibiting air mass stagnation as claimed in claim 2 wherein said air mass inhibiting member (2) has a length of its bottom side not greater than 1/15 of the length of the suction surface of the vane (3).
5. A centrifugal pump impeller for inhibiting air mass stagnation as claimed in claim 2 wherein the spacing between adjacent said air mass inhibiting members (2) is no greater than 1/10 the length of the suction surface of the vane (3).
6. A centrifugal pump impeller for inhibiting air mass stagnation as claimed in claim 2, characterized in that the height of said air mass inhibiting member (2) is not greater than 2/3 of the height of the vane (3).
7. The centrifugal pump impeller for inhibiting air mass stagnation of claim 2 characterized in that the length of the edge of said air mass inhibiting member (2) is not more than 2/5 of the length of the suction surface of the vane (3).
8. The centrifugal pump impeller for suppressing the stagnation of air mass as recited in claim 1, wherein the number of said blades (3) is 4 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023181836.6U CN213981328U (en) | 2020-12-25 | 2020-12-25 | Centrifugal pump impeller for inhibiting air mass retention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023181836.6U CN213981328U (en) | 2020-12-25 | 2020-12-25 | Centrifugal pump impeller for inhibiting air mass retention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981328U true CN213981328U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023181836.6U Expired - Fee Related CN213981328U (en) | 2020-12-25 | 2020-12-25 | Centrifugal pump impeller for inhibiting air mass retention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981328U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558450A (en) * | 2022-03-16 | 2022-05-31 | 杭州蕴泽环境科技有限公司 | Ship desulfurization system with energy recovery function |
| CN114876858A (en) * | 2022-04-20 | 2022-08-09 | 江苏大学镇江流体工程装备技术研究院 | Vortex generator applied to centrifugal pump |
| CN115929697A (en) * | 2023-01-20 | 2023-04-07 | 江苏大学 | Control structure for improving cavitation flow-induced vibration characteristic of hydrofoil |
-
2020
- 2020-12-25 CN CN202023181836.6U patent/CN213981328U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558450A (en) * | 2022-03-16 | 2022-05-31 | 杭州蕴泽环境科技有限公司 | Ship desulfurization system with energy recovery function |
| CN114876858A (en) * | 2022-04-20 | 2022-08-09 | 江苏大学镇江流体工程装备技术研究院 | Vortex generator applied to centrifugal pump |
| CN115929697A (en) * | 2023-01-20 | 2023-04-07 | 江苏大学 | Control structure for improving cavitation flow-induced vibration characteristic of hydrofoil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210817 |