CN112392769A - Reduce hydraulic loss's vertical tubing pump body - Google Patents
Reduce hydraulic loss's vertical tubing pump body Download PDFInfo
- Publication number
- CN112392769A CN112392769A CN202011395232.3A CN202011395232A CN112392769A CN 112392769 A CN112392769 A CN 112392769A CN 202011395232 A CN202011395232 A CN 202011395232A CN 112392769 A CN112392769 A CN 112392769A
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- Prior art keywords
- water
- suction chamber
- pipeline
- inlet
- water inlet
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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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing 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 invention discloses a vertical pipeline pump body for reducing hydraulic loss, which comprises a water suction chamber cavity, a water inlet pipeline and a water outlet pipeline, wherein the water suction chamber cavity is provided with a water inlet pipe and a water outlet pipe; a diversion cone structure extends inwards from the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity; the middle part of the inner cavity of the water inlet pipeline is provided with an inlet clapboard which extends along the pipeline and divides the pipeline into two channels; the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity, is provided with a water suction chamber partition plate which extends from the water inlet of the water suction chamber cavity to the diversion cone, the upper end of the water suction chamber partition plate is an upper inclined plane which extends from the water inlet of the water suction chamber cavity to the middle part of the diversion cone, and the two sides of the water suction chamber partition plate are side inclined planes which extend downwards from the upper inclined plane to the inner wall of the water inlet pipeline. The vertical pipeline pump body of the invention improves the flow of fluid at the inlet of the impeller, eliminates the vortex at the bottom, reduces the hydraulic loss and improves the efficiency of the pump.
Description
Technical Field
The invention relates to a vertical pipeline pump body for reducing hydraulic loss, and belongs to the field of vertical pipeline pumps.
Background
The pipeline pump is one of single-stage single-suction or multi-stage centrifugal pumps, belongs to a vertical structure, can be conveniently installed in the middle of a conveying pipeline to be used as a pressurizing conveying pump, and is widely applied. The structure of the traditional pipeline pump comprises a water suction chamber cavity, a water inlet pipeline communicated with the axial lower end part of the water suction chamber cavity, and a water outlet pipeline communicated with the side wall of the water suction chamber cavity; the connecting line of the inlet center of the water inlet pipeline and the outlet center of the water outlet pipeline is vertical to the axis of the cavity of the water suction chamber; therefore, the water inlet pipeline in the traditional pipeline pump adopts a 90-degree elbow structure, the difference of the curvatures of the inner side and the outer side of the water inlet pipeline of the structure is large, so that the liquid flow has uneven speed distribution in a bent pipe type flow channel, the hydraulic loss is large, the speed difference of the liquid flow flowing to the circumference of the inlet of the impeller is large, the pressure distribution is uneven, the pressure difference exists, and certain influence is exerted on the cavitation and the efficiency of the pump.
Disclosure of Invention
The invention aims to solve the problems that the speed distribution of liquid flow in a bent pipe type flow channel is uneven, the hydraulic loss is large, the speed difference of the liquid flow flowing to the periphery of an impeller inlet is large, the pressure distribution is uneven, and pressure difference exists, so that cavitation and efficiency of a pump are influenced to a certain extent because a water inlet pipeline in a traditional pipeline pump adopts a 90-degree bent pipe structure. Therefore, the vertical pipeline pump body capable of reducing hydraulic loss is provided.
The purpose of the invention is realized by the following technical scheme.
The invention discloses a vertical pipeline pump body capable of reducing hydraulic loss, which comprises a water suction chamber cavity, a water inlet pipeline communicated with the axial lower end part of the water suction chamber cavity, and a water outlet pipeline communicated with the side wall of the water suction chamber cavity; the connecting line of the inlet center of the water inlet pipeline and the outlet center of the water outlet pipeline is vertical to the axis of the cavity of the water suction chamber;
a diversion cone structure extends inwards from the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity;
an inlet partition plate which extends along the pipeline and divides the pipeline into two channels is arranged in the middle of the inner cavity of the water inlet pipeline, the plate surface extending direction of the inlet partition plate passes through the axis of the water absorption chamber cavity, and the tail end part of the inlet partition plate is an inclined surface extending from the water inlet of the water absorption chamber cavity to the middle of the flow guide cone;
the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity, is provided with a water suction chamber partition plate which extends from the water inlet of the water suction chamber cavity to the diversion cone, the upper end of the water suction chamber partition plate is an upper inclined plane which extends from the water inlet of the water suction chamber cavity to the middle part of the diversion cone, and the two sides of the water suction chamber partition plate are side inclined planes which extend downwards from the upper inclined plane to the inner wall of the water inlet pipeline.
The upper edge of the starting end of the inlet partition plate is located at 1/2 of the total length of the upper end of the inner cavity of the water inlet pipeline, and the distance between the lower edge of the starting end of the inlet partition plate and the inlet of the water inlet pipeline is smaller than the distance between the upper edge of the starting end of the inlet partition plate and the inlet of the water inlet pipeline.
The inclined plane at the tail end of the inlet partition plate and the upper inclined plane of the water suction chamber partition plate are symmetrical relative to the axis of the water suction chamber cavity.
Working process
After the pump body is provided with the impeller, the impeller rotates to enable liquid flow media to enter from the inlet of the water inlet pipeline, the liquid flow media are firstly cut into two liquid flows through the inlet partition plate, and the inlet partition plate prevents rotational flow from being disordered and impacted and forms vortex; two streams of liquid flow respectively enter the semi-spiral water suction chambers on two sides of the flow guide cone after passing through the inlet partition plate; then, under the guidance of a partition plate of the water suction chamber, two liquid flows enter the cavity of the water suction chamber in a forward prerotation manner and are finally discharged from a water outlet pipeline communicated with the side wall of the cavity of the water suction chamber.
Advantageous effects
The vertical pipeline pump body of the invention improves the flow of fluid at the inlet of the impeller, the velocity distribution of the liquid flow field is uniform without impact, the fluid enters the impeller in a forward prewhirl mode, the vortex at the bottom is eliminated, the relative velocity is reduced, the cavitation resistance of the pump is improved, the hydraulic loss is reduced, and the efficiency of the pump is improved.
Drawings
FIG. 1 is a sectional view showing the structure of a pump body of a vertical pipe pump according to the present invention;
FIG. 2 is a top cross-sectional view of the vertical tube pump body of the present invention at the inlet tube;
in the figure, 1-inlet duct; 2-an inlet baffle; 3-a water suction chamber partition; 4-a water absorption chamber cavity; 5-an outlet pipe; 11-a guide cone.
Detailed Description
The invention will be further described with reference to the following figures and examples:
examples
As shown in fig. 1, the vertical pipe pump body for reducing hydraulic loss of the present invention comprises a water suction chamber cavity 4, a water inlet pipe 1 communicated with the axial lower end of the water suction chamber cavity 4, and a water outlet pipe 5 communicated with the side wall of the water suction chamber cavity 4; the connecting line of the inlet center of the water inlet pipeline 1 and the outlet center of the water outlet pipeline 5 is vertical to the axis of the water suction chamber cavity 4;
as shown in fig. 2, a diversion cone 11 structure extends inwards from the inner wall of the inner cavity of the water inlet pipe 1, which is opposite to the water inlet of the water suction chamber cavity 4;
an inlet partition plate 2 which extends along the pipeline and divides the pipeline into two channels is arranged in the middle of the inner cavity of the water inlet pipeline 1, the plate surface of the inlet partition plate 2 extends across the axis of the water suction chamber cavity 4, and the tail end of the inlet partition plate 2 is an inclined surface which extends from the water inlet of the water suction chamber cavity 4 to the middle of the diversion cone 11;
the inner wall of the inner cavity of the water inlet pipeline 1, which is opposite to the water inlet of the water suction chamber cavity 4, is provided with a water suction chamber partition plate 3 extending from the water inlet of the water suction chamber cavity 4 to the diversion cone 11, the upper end of the water suction chamber partition plate 3 is an upper inclined plane extending from the water inlet of the water suction chamber cavity 4 to the middle of the diversion cone 11, and the two sides of the water suction chamber partition plate are side inclined planes extending downwards from the upper inclined plane to the inner wall of the water inlet pipeline 1.
The upper edge of the starting end of the inlet partition board 2 is located at 1/2 of the total length of the upper end of the inner cavity of the water inlet pipeline 1, and the distance between the lower edge of the starting end of the inlet partition board 2 and the inlet of the water inlet pipeline 1 is less than the distance between the upper edge of the starting end of the inlet partition board 2 and the inlet of the water inlet pipeline 1.
The inclined plane of the tail end of the inlet partition plate 2 and the upper inclined plane of the water suction chamber partition plate 3 are symmetrical relative to the axis of the water suction chamber cavity 4.
After the pump body is provided with the impeller, the impeller rotates to enable liquid flow media to enter from an inlet of the water inlet pipeline 1, the liquid flow media are firstly cut into two liquid flows through the inlet partition plate 2, and the inlet partition plate 2 prevents rotational flow from being disordered and impacting and forms vortex; two streams of liquid flow respectively enter the semi-spiral water suction chambers at two sides of the guide cone 11 after passing through the inlet partition plate 2; then, under the guidance of the baffle plate 3 of the water suction chamber, two liquid flows enter the cavity 4 of the water suction chamber in a positive prerotation mode and are finally discharged from a water outlet pipeline 5 communicated with the side wall of the cavity 4 of the water suction chamber.
Claims (3)
1. A vertical pipeline pump body for reducing hydraulic loss comprises a water suction chamber cavity, a water inlet pipeline communicated with the axial lower end part of the water suction chamber cavity, and a water outlet pipeline communicated with the side wall of the water suction chamber cavity; the connecting line of the inlet center of the water inlet pipeline and the outlet center of the water outlet pipeline is vertical to the axis of the cavity of the water suction chamber;
the method is characterized in that: a diversion cone structure extends inwards from the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity;
an inlet partition plate which extends along the pipeline and divides the pipeline into two channels is arranged in the middle of the inner cavity of the water inlet pipeline, the plate surface extending direction of the inlet partition plate passes through the axis of the water absorption chamber cavity, and the tail end part of the inlet partition plate is an inclined surface extending from the water inlet of the water absorption chamber cavity to the middle of the flow guide cone;
the inner wall of the inner cavity of the water inlet pipeline, which is opposite to the water inlet of the water suction chamber cavity, is provided with a water suction chamber partition plate which extends from the water inlet of the water suction chamber cavity to the diversion cone, the upper end of the water suction chamber partition plate is an upper inclined plane which extends from the water inlet of the water suction chamber cavity to the middle part of the diversion cone, and the two sides of the water suction chamber partition plate are side inclined planes which extend downwards from the upper inclined plane to the inner wall of the water inlet pipeline.
2. The vertical tube pump body for reducing hydraulic loss of claim 1, wherein: the upper edge of the starting end of the inlet partition plate is located at 1/2 of the total length of the upper end of the inner cavity of the water inlet pipeline, and the distance between the lower edge of the starting end of the inlet partition plate and the inlet of the water inlet pipeline is smaller than the distance between the upper edge of the starting end of the inlet partition plate and the inlet of the water inlet pipeline.
3. The vertical tube pump body for reducing hydraulic loss of claim 1, wherein: the inclined plane at the tail end of the inlet partition plate and the upper inclined plane of the water suction chamber partition plate are symmetrical relative to the axis of the water suction chamber cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395232.3A CN112392769A (en) | 2020-11-30 | 2020-11-30 | Reduce hydraulic loss's vertical tubing pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395232.3A CN112392769A (en) | 2020-11-30 | 2020-11-30 | Reduce hydraulic loss's vertical tubing pump body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112392769A true CN112392769A (en) | 2021-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011395232.3A Pending CN112392769A (en) | 2020-11-30 | 2020-11-30 | Reduce hydraulic loss's vertical tubing pump body |
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| CN (1) | CN112392769A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309730A (en) * | 2021-06-24 | 2021-08-27 | 襄阳五二五泵业有限公司 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
-
2020
- 2020-11-30 CN CN202011395232.3A patent/CN112392769A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309730A (en) * | 2021-06-24 | 2021-08-27 | 襄阳五二五泵业有限公司 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
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