CN219911162U - Self-adjusting constant flow water supply device in pump set - Google Patents
Self-adjusting constant flow water supply device in pump set Download PDFInfo
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- CN219911162U CN219911162U CN202321070546.5U CN202321070546U CN219911162U CN 219911162 U CN219911162 U CN 219911162U CN 202321070546 U CN202321070546 U CN 202321070546U CN 219911162 U CN219911162 U CN 219911162U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
The utility model provides a self-interacting constant flow water supply device in pump package, includes by feeding pump, MD pump and the pump package that the feeding pump outlet pipe that connects between feeding pump delivery port and MD pump water sucking mouth constitutes, its special character is: the water feeding pump water outlet pipe is provided with a flow regulating valve corresponding to the water feeding pump water outlet, the water feeding pump water outlet pipe is provided with a bypass pipeline at the rear end of the water feeding valve water outlet, and the bypass pipeline is provided with a drainage valve. The utility model eliminates the problem of flow attenuation of the MD pump, ensures that the MD pump discharges water with constant flow, fully plays the capacities of the water pump and the motor, and achieves the high-efficiency and rapid water discharge effect; the problem of cavitation of the flow of the MD pump is solved, the suction height of the MD pump is not limited by cavitation, the effective volume of a mine sump can be maximized, and the mine drainage safety is improved; the flow of the pump set is automatically regulated by utilizing the switch value change of the bypass pipeline and the drain valve without external force, and the purpose of constant flow drainage without cavitation of the pump set is achieved by the pump.
Description
Technical Field
The utility model relates to a device capable of realizing automatic adjustment and constant flow water supply in a pump set formed by a water feeding pump and an MD pump, in particular to a self-adjusting constant flow water supply device in the pump set.
Background
The water supply and drainage system of the water pump is widely applied, is closely related to industrial and agricultural production and people life, is an electromechanical product which covers the aspects of society widely, the total installed quantity of the water pump in the whole country is over ten millions, and the abrasion-resistant multistage water pump used in the coal mine only has hundreds of thousands, and the total quantity is not high, but the power consumption of the water pump is very large, and the power consumption of the water pump in one year accounts for about 20% of the power consumption in the whole country.
The efficiency of the water pump is generally low, and mainly has two reasons, namely, the water pump is used for supplying water under negative pressure (in a vacuumizing mode) and has serious cavitation problem; secondly, even if water is supplied by positive pressure (a water feeding pump is arranged at the front end of a main drainage pump), the problem of flow attenuation in the water supply process exists. The flow attenuation of the water pump is caused by two reasons, namely, the lift and the cavitation of the water pump.
The curve H-Q curve of the corresponding relation between the flow and the lift of the water pump shows that the flow, the lift, the power and the efficiency value of the water pump are in dynamic change when the water pump operates. For a particular pump, once designed and manufactured, the cavitation margin must be a fixed value. That is, once the flow rate, head, motor speed of the water pump is determined, its necessary cavitation margin is determined. Therefore, the necessary cavitation allowance of the water pump exists objectively and cannot be overcome by the water pump, and the cavitation phenomenon of the water pump exists in a harmful way.
In general, most water pumps are supplied with water under negative pressure (the water pump is installed on a bottom plate of a pump house near a water absorbing well, a vacuum pumping device is used for forming negative pressure in a pump body, then liquid enters the pump body under the action of atmospheric pressure, the water pump starts to run, the liquid is conveyed to a set place or height), high water level is started, and low water level is stopped. Although there are definite parameters on the water pump nameplate, in practice its flow, lift, power, efficiency values are dynamically changed. This can be demonstrated by the performance profile of the water pump. The efficiency of the design point of the water pump is highest; the flow of the large flow point is increased, the lift is reduced, the shaft power is increased, and the efficiency is reduced; the small flow point is that the lift is increased, and the flow, power and efficiency are reduced. For convenience, drivers of pump rooms of enterprises often open the water outlet end regulating valves of the water pumps completely, so that the water pumps run at a flow larger than a large flow point. As a result, the necessary cavitation margin of the water pump is continuously increased, namely the suction stroke is reduced, and as a result, the cavitation phenomenon of the water pump is serious, the drainage speed is slowed down, and the pump efficiency is excessively reduced.
Through the analysis, in order to improve the efficiency of the water pump, the problems of water pump suction and flow rate attenuation must be solved, and the problem of cavitation is solved. The problem is solved by mainly adding the water feeding pump, and if the negative pressure water supply of the water pump is changed into positive pressure water supply, the cavitation problem can be solved.
Although the cavitation problem can be solved by additionally arranging the water feeding pump at the front end of the MD pump, the problem of constant flow rate cannot be solved. The water supply pump water conservancy model is in a structure form with large flow and low lift, and the water supply pump has the structural characteristics that the flow of high water level (the lift of the water supply pump is low at the moment) is large, even the flow exceeds a design point greatly, so that the main drainage pump motor has the possibility of overcurrent; as the liquid level drops, the main drain pump flow begins to decay, and if the drain height is 9 meters, the decay amplitude of the flow may be 5% or more.
Disclosure of Invention
The utility model aims to solve the technical problems in the prior art and provides a self-adjusting constant flow water supply device in a pump set.
The technical scheme of the utility model is as follows: the utility model provides a self-interacting constant flow water supply device in pump package, includes by feeding pump, MD pump and the pump package that the feeding pump outlet pipe that connects between feeding pump delivery port and MD pump water sucking mouth constitutes, its special character is: the water feeding pump water outlet pipe is provided with a flow regulating valve corresponding to the water feeding pump water outlet, the water feeding pump water outlet pipe is provided with a bypass pipeline at the rear end of the water feeding valve water outlet, and the bypass pipeline is provided with a drainage valve.
Further, the bypass pipeline is composed of a horizontal section and a vertical section, the drain valve is arranged on the horizontal section, and the water outlet end of the bypass pipeline is positioned at the lower end of the vertical section.
Further, a pressure gauge is arranged on the water outlet pipe of the water feeding pump corresponding to the front end of the MD pump.
Further, the water outlet end of the bypass pipeline is communicated with a water well.
Further, the leakage valve is a one-way valve and comprises a valve body, a valve cover, a rocker hinged at the inlet of the valve body and a valve clack arranged on the rocker, wherein the valve clack is obliquely arranged at the inlet of the valve body. When the pressure in the water outlet pipe of the water feeding pump is large, the valve clack is opened, and when the pressure is small, the switching value of the valve clack is reduced, so that constant flow output is achieved.
Further, the horizontal inclination angle of the valve clack is 2-5 degrees.
The beneficial effects of the utility model are as follows:
1. the problem of flow attenuation of the MD pump is solved, the MD pump is enabled to drain with constant flow, the capacities of the water pump and the motor are fully exerted, and the efficient and rapid drainage effect is achieved.
2. The problem of cavitation of the flow of the MD pump is solved, the suction height of the MD pump is not limited by cavitation, the effective volume of a mine sump can be maximized, and the mine drainage safety is improved.
3. The flow of the pump set is automatically regulated by utilizing the switch value change of the bypass pipeline and the drain valve without external force, and the purpose of constant flow drainage without cavitation of the pump set is achieved by the pump.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a connection structure between a water outlet pipe and a bypass pipeline of the water feeding pump in fig. 1.
In the figure: the device comprises a water feeding pump-1, a flow regulating valve-2, a water feeding pump water outlet pipe-3, a pressure gauge-4, an MD pump-5, a bypass pipeline-6, a drainage valve-7 and an MD pump water sucking port-501.
Detailed Description
In order that the technical problems to be solved, the technical solutions adopted and the technical effects achieved by the present utility model may be more easily understood and appreciated, the present utility model is further described below in connection with specific embodiments.
As shown in the figure, the self-adjusting constant flow water supply device in the pump group comprises a pump group consisting of a water feeding pump 1, an MD pump 5 and a water feeding pump water outlet pipe 3 connected between the water outlet of the water feeding pump 1 and the water sucking port 501 of the MD pump, wherein a flow regulating valve 2 is arranged on the water feeding pump water outlet pipe 3 corresponding to the water feeding pump water outlet, a bypass pipeline 6 is arranged on the water feeding pump water outlet pipe 3 and positioned at the rear end of the water outlet of the flow regulating valve 2, a drainage valve 7 is arranged on the bypass pipeline 6, and a pressure gauge 4 is arranged on the water feeding pump water outlet pipe 3 corresponding to the front end of the MD pump 5.
Further, the water outlet end of the bypass pipeline 6 is communicated with a water well.
Further, the bypass pipeline 6 is composed of a horizontal section 601 and a vertical section 602, the bleeder valve 7 is arranged on the horizontal section 601, and the water outlet end of the bypass pipeline 6 is positioned at the lower end of the vertical section 602.
Further, the relief valve 7 is a one-way valve and comprises a valve body 701, a valve cover 702, a rocker 703 hinged at the inlet of the valve body 701 and a valve clack 704 mounted on the rocker 703, wherein the valve clack 704 is obliquely arranged at the inlet of the valve body 701. When the pressure in the water outlet pipe 3 of the water feeding pump is large, the valve clack 704 is opened, and when the pressure is reduced, the switching value of the valve clack 704 is reduced until the valve clack is closed, so that the purpose of constant flow output of the pump group is achieved.
Further, the horizontal inclination of the flap 704 is 2-5 °.
The above is only a specific embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a self-interacting constant flow water supply installation in pump package, includes by feeding pump, MD pump and connect the pump package that constitutes of feeding pump outlet pipe between feeding pump delivery port and MD pump water sucking mouth, characterized by: the water feeding pump water outlet pipe is provided with a flow regulating valve corresponding to the water feeding pump water outlet, the water feeding pump water outlet pipe is provided with a bypass pipeline at the rear end of the water feeding valve water outlet, and the bypass pipeline is provided with a drainage valve.
2. A self-regulating constant flow water supply device in a pump stack according to claim 1, characterized in that: the bypass pipeline is composed of a horizontal section and a vertical section, the bleeder valve is arranged on the horizontal section, and the water outlet end of the bypass pipeline is positioned at the lower end of the vertical section.
3. A self-regulating constant flow water supply device in a pump stack according to claim 1, characterized in that: and a pressure gauge is arranged on the water outlet pipe of the water feeding pump corresponding to the front end of the MD pump.
4. A self-regulating constant flow water supply device in a pump stack according to claim 1, characterized in that: the water outlet end of the bypass pipeline is communicated with a water well.
5. A self-regulating constant flow water supply device in a pump stack according to claim 1, characterized in that: the leakage valve is a one-way valve and comprises a valve body, a valve cover, a rocker hinged at the inlet of the valve body and a valve clack arranged on the rocker, wherein the valve clack is obliquely arranged at the inlet of the valve body.
6. A self-regulating constant flow water supply device in a pump stack as claimed in claim 5, wherein: the horizontal inclination angle of the valve clack is 2-5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321070546.5U CN219911162U (en) | 2023-05-07 | 2023-05-07 | Self-adjusting constant flow water supply device in pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321070546.5U CN219911162U (en) | 2023-05-07 | 2023-05-07 | Self-adjusting constant flow water supply device in pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911162U true CN219911162U (en) | 2023-10-27 |
Family
ID=88434763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321070546.5U Active CN219911162U (en) | 2023-05-07 | 2023-05-07 | Self-adjusting constant flow water supply device in pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911162U (en) |
-
2023
- 2023-05-07 CN CN202321070546.5U patent/CN219911162U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20240204 Address after: 121000, No. 10B-38, Fujin Jiayuan, Lingnan Xili, Taihe District, Jinzhou City, Liaoning Province Patentee after: Zhang Hanxi Country or region after: China Address before: 121116 No. 5, Qilihe Industrial Park, Yi County, Jinzhou City, Liaoning Province Patentee before: JINZHOU HEAVY WATER PUMP Co.,Ltd. Country or region before: China |