CN113309730A - Vertical pipeline pump with uniformly distributed inlet flow field speed - Google Patents
Vertical pipeline pump with uniformly distributed inlet flow field speed Download PDFInfo
- Publication number
- CN113309730A CN113309730A CN202110716200.7A CN202110716200A CN113309730A CN 113309730 A CN113309730 A CN 113309730A CN 202110716200 A CN202110716200 A CN 202110716200A CN 113309730 A CN113309730 A CN 113309730A
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- inlet
- water
- suction chamber
- pipeline
- water suction
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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
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- 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 with uniformly distributed inlet flow field speed, 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; the inlet of the water inlet pipeline and the inlet of the water outlet pipeline are both communicated with the cavity of the water suction chamber in a spiral channel; the bottom of the water inlet pipeline is provided with a flow guide cone structure extending towards 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 partition board which vertically extends along the pipeline, and the tail end of the inlet partition board is connected with the bottom of the diversion cone. The vertical pipeline pump can improve the flow condition, make the velocity distribution of the inlet flow field uniform, improve certain cavitation resistance and efficiency, and minimize hydraulic loss.
Description
Technical Field
The invention relates to a vertical pipeline pump with uniformly distributed inlet flow field speeds, and belongs to the field of vertical pipeline pumps for ships.
Background
The pipeline pump is one of single-stage single-suction or multi-stage centrifugal pumps, belongs to a vertical structure, and can be conveniently installed in the middle of a conveying pipeline to be used as a pressurizing conveying pump because the inlet and the outlet of the pipeline pump are on the same straight line and on the same plane with the shaft center, and the calibers of the inlet and the outlet of most of the pipeline pumps are the same, so that the pipeline pump is widely applied. Most of the traditional pump body inlet structures of the pipeline pumps are of elbow type, the structure is relatively simple, the velocity distribution of liquid flow in an elbow type flow channel is uneven, the hydraulic loss is large, the difference of velocity gradient of the liquid flow flowing to the circumference of an impeller inlet is large, and the cavitation and the efficiency of the pump are influenced to a certain extent.
Disclosure of Invention
The invention aims to provide a vertical pipeline pump with uniformly distributed inlet flow field speed, which can improve the flow condition of the pump, ensure that the inlet flow field speed is uniformly distributed, improve certain cavitation resistance and efficiency and minimize hydraulic loss.
The purpose of the invention is realized by the following technical scheme.
The invention relates to a vertical pipeline pump with uniformly distributed inlet flow field speeds, which comprises a water suction chamber cavity, a water inlet pipeline communicated with the lower end part of the water suction chamber cavity, and a water outlet pipeline communicated with the side wall of the upper end 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 inlet of the water inlet pipeline and the inlet of the water outlet pipeline are both communicated with the cavity of the water suction chamber in a spiral channel;
the bottom of the water inlet pipeline is provided with a flow guide cone structure extending towards the water inlet of the water suction chamber cavity, and the axis of the flow guide cone is superposed with the axis of the water suction chamber cavity;
the middle part of the inner cavity of the water inlet pipeline is provided with an inlet partition board vertically extending along the pipeline, the water inlet pipeline is divided into a left channel and a right channel which are spaced, and the tail end of the inlet partition board is connected with the bottom of the flow guide cone.
The bottom of the water inlet pipeline is also provided with a water suction chamber clapboard extending from the side wall of the diversion cone to the water inlet of the water suction chamber cavity, the extending plane of the water suction chamber clapboard passes through the axis of the diversion cone, and the circumferential angle between the water suction chamber clapboard connected with the diversion cone and the tail end of the inlet clapboard is 90 degrees.
The both sides of room baffle that absorbs water are from last downwardly extending to the inclined plane of inlet channel inner wall, just the room baffle both sides inclined plane that absorbs water with the department of meeting of inlet channel inner wall is the cambered surface transition.
The side of the upper edge of the water suction chamber partition plate, which is connected with the water inlet of the water suction chamber cavity, is higher than the side of the water suction chamber partition plate, which is connected with the side wall of the diversion cone.
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 liquid flows respectively enter the annular channel at the outer side of the diversion 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 improves the flowing condition through the water inlet pipeline with the spiral structure, and ensures that a uniform velocity field is obtained at the inlet of the cavity of the water suction chamber; an inlet partition plate is arranged in the inner cavity of the water inlet pipeline, so that on one hand, turbulence, impact and vortex formation can be prevented when liquid flow enters, the liquid flow is divided into two liquid flows, and on the other hand, the effect of supporting the upper pipe wall and the lower pipe wall can be achieved; the flow guide cone structure eliminates a vortex area at the bottom and guides liquid flow to enter the cavity of the water suction chamber; the partition board of the water suction chamber can stabilize liquid flow and improve the flowing uniformity, and the partition board and the flow guide cone together guide the liquid flow to the water pressing chamber.
Drawings
FIG. 1 is a front view of the vertical tube pump of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
in the figure, 1-water inlet pipe; 2-an inlet baffle; 3-a flow guide cone; 4-a water suction chamber partition; 5-a water outlet pipeline; 6-water absorption chamber cavity.
Detailed Description
The invention will be further explained with reference to the following drawings and examples:
examples
As shown in fig. 1-3, the vertical pipe pump with uniform velocity distribution of the inlet flow field of the present invention comprises a water suction chamber cavity 6, a water inlet pipe 1 communicated with the lower end of the water suction chamber cavity 6, and a water outlet pipe 5 communicated with the upper end side wall of the water suction chamber cavity 6; 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 6; the inlet of the water inlet pipeline 1 and the inlet of the water outlet pipeline 5 are both communicated with the water suction chamber cavity 6 in a spiral channel manner;
the bottom of the water inlet pipeline 1 is provided with a diversion cone 3 structure extending towards the water inlet of the water suction chamber cavity 6, and the axis of the diversion cone 3 is superposed with the axis of the water suction chamber cavity 6;
an inlet partition plate 2 vertically extending along the pipeline is arranged in the middle of the inner cavity of the water inlet pipeline 1, the water inlet pipeline 1 is divided into a left channel and a right channel at intervals, and the tail end of the inlet partition plate 2 is connected with the bottom of the diversion cone 3;
the bottom of the water inlet pipeline 1 is also provided with a water suction chamber partition plate 4 extending from the side wall of the diversion cone 3 to the water inlet of the water suction chamber cavity 6, the extending plane of the water suction chamber partition plate 4 passes through the axis of the diversion cone 3, and the circumferential angle of the water suction chamber partition plate 4 connected with the diversion cone 3 and the tail end of the inlet partition plate 2 is 90 degrees.
The both sides of room baffle 4 that absorb water are from last downwardly extending to the inclined plane of inlet channel inner wall, just 4 both sides inclined plane of room baffle that absorbs water with the department of meeting of inlet channel inner wall is the cambered surface transition.
The side of the upper edge of the water suction chamber partition plate 4 connected with the water inlet of the water suction chamber cavity 6 is higher than the side connected with the side wall of the diversion cone 3.
Claims (4)
1. A vertical pipeline pump with uniformly distributed inlet flow field speed comprises a water suction chamber cavity, a water inlet pipeline communicated with the lower end part of the water suction chamber cavity, and a water outlet pipeline communicated with the side wall of the upper end 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: the inlet of the water inlet pipeline and the inlet of the water outlet pipeline are both communicated with the cavity of the water suction chamber in a spiral channel; the bottom of the water inlet pipeline is provided with a flow guide cone structure extending towards the water inlet of the water suction chamber cavity, and the axis of the flow guide cone is superposed with the axis of the water suction chamber cavity;
the middle part of the inner cavity of the water inlet pipeline is provided with an inlet partition board vertically extending along the pipeline, the water inlet pipeline is divided into a left channel and a right channel which are spaced, and the tail end of the inlet partition board is connected with the bottom of the flow guide cone.
2. A vertical duct pump with uniform velocity distribution in the inlet flow field as defined in claim 1, wherein: the bottom of the water inlet pipeline is provided with a water suction chamber partition plate extending from the side wall of the diversion cone to the water inlet of the water suction chamber cavity, the extending plane of the water suction chamber partition plate passes through the axis of the diversion cone, and the circumferential angle between the water suction chamber partition plate connected with the diversion cone and the tail end of the inlet partition plate is 90 degrees.
3. A vertical duct pump with uniform velocity distribution in the inlet flow field as defined in claim 2, wherein: the both sides of room baffle that absorbs water are from last downwardly extending to the inclined plane of inlet channel inner wall, just the room baffle both sides inclined plane that absorbs water with the department of meeting of inlet channel inner wall is the cambered surface transition.
4. A vertical duct pump with uniform velocity distribution in the inlet flow field as claimed in claim 2 or 3, wherein: the side of the upper edge of the water suction chamber partition plate, which is connected with the water inlet of the water suction chamber cavity, is higher than the side of the water suction chamber partition plate, which is connected with the side wall of the diversion cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716200.7A CN113309730A (en) | 2021-06-24 | 2021-06-24 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716200.7A CN113309730A (en) | 2021-06-24 | 2021-06-24 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113309730A true CN113309730A (en) | 2021-08-27 |
Family
ID=77380528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110716200.7A Pending CN113309730A (en) | 2021-06-24 | 2021-06-24 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113309730A (en) |
Citations (5)
| 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 |
| CN107489655A (en) * | 2017-09-29 | 2017-12-19 | 扬州大学 | Pump installation bell-shaped inflow passage with the suitable flowing plate of activity |
| CN107588008A (en) * | 2017-10-19 | 2018-01-16 | 江苏国泉泵业制造有限公司 | A kind of double outlet multipurpose external-mix self-priming pumps with similar spiral shape suction room |
| CN212225601U (en) * | 2020-05-29 | 2020-12-25 | 山东长志泵业有限公司 | High-efficiency energy-saving centrifugal pump |
| CN112392769A (en) * | 2020-11-30 | 2021-02-23 | 襄阳五二五泵业有限公司 | Reduce hydraulic loss's vertical tubing pump body |
-
2021
- 2021-06-24 CN CN202110716200.7A patent/CN113309730A/en active Pending
Patent Citations (5)
| 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 |
| CN107489655A (en) * | 2017-09-29 | 2017-12-19 | 扬州大学 | Pump installation bell-shaped inflow passage with the suitable flowing plate of activity |
| CN107588008A (en) * | 2017-10-19 | 2018-01-16 | 江苏国泉泵业制造有限公司 | A kind of double outlet multipurpose external-mix self-priming pumps with similar spiral shape suction room |
| CN212225601U (en) * | 2020-05-29 | 2020-12-25 | 山东长志泵业有限公司 | High-efficiency energy-saving centrifugal pump |
| CN112392769A (en) * | 2020-11-30 | 2021-02-23 | 襄阳五二五泵业有限公司 | Reduce hydraulic loss's vertical tubing pump body |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20210827 |