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System and method for filling centrifugal pump system

A centrifugal pump and pump-filling technology, which is applied to the components, pump, and pump control of the pumping device for elastic fluids, which can solve the problems of incompleteness, excessive gas volume, and inability to pump and pump air for a long time.

Inactive Publication Date: 2020-12-22
辽宁三三工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a pump filling system and a pump filling method for a centrifugal pump system, which solves the problem that the amount of gas in the pipeline cannot be filled for a long time and the centrifugal pump in the filling pump system cannot be filled for a long time. The technical problem of incomplete air extraction

Method used

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  • System and method for filling centrifugal pump system
  • System and method for filling centrifugal pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] refer to figure 1 with figure 2 , a filling pump system of a centrifugal pump system, the centrifugal pump system includes a liquid inlet pipe 3, a centrifugal pump 2 and a liquid outlet pipe 4, the liquid inlet of the centrifugal pump 2 is connected to one end of the liquid inlet pipe 3, and the other end of the liquid inlet pipe 3 Located in the liquid suction pool 1, the liquid outlet of the centrifugal pump 2 is connected with a liquid outlet pipe 4, and the pumping system includes a one-way valve 5 and an air extraction assembly 8;

[0039] The one-way valve 5 is arranged at one end of the liquid outlet pipe, so that the liquid inlet pipe 3, the centrifugal pump 2 and the liquid outlet pipe 4 form a closed space before the centrifugal pump is turned on;

[0040] The air pumping component 8 is connected to the highest point of the centrifugal pump system, and the highest point is close to the side of the centrifugal pump 2, so that the closed space is sucked befor...

Embodiment 2

[0051] The difference from Embodiment 1 is that the height of the gas-liquid separation level gauge 72 is half of the gas-liquid separation connector 71 . When the height of the gas-liquid separation level gauge 72 is 1 / 2 of the gas-liquid separation connector 71, it indicates that the gas in the closed space is completely discharged, and the pumping work of the vacuum pump 9 of the air pumping assembly 8 to the centrifugal pump 2 is stopped. Centrifugal pump 2 and vacuum pump 9 all can work normally.

Embodiment 3

[0053] The difference from Embodiment 1 is that the height of the gas-liquid separation level gauge 72 is two-thirds of the gas-liquid separation connector 71 . When the height of the gas-liquid separation level gauge 72 is two-thirds of the gas-liquid separation connector 71, it indicates that the gas in the closed space is completely discharged. At this time, the centrifugal pump 2 works normally, and the vacuum pump 9 will cause the liquid in the gas-liquid separation connector 71 to directly enter the air inlet of the vacuum pump 9 through the second connecting pipe 11. The vacuum pump 9 is used for pumping air. Liquid will affect the life of vacuum pump 9. In order to avoid this situation, when the height of the gas-liquid separation level gauge 72 is too high, the exhaust valve 73 is opened to overflow and prevent the liquid in the suction pool 1 from affecting the vacuum pump 9 .

[0054] A pump filling method of a centrifugal pump, the method is based on a pump fillin...

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PUM

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Abstract

The invention relates to a system and method for filling centrifugal pump system. The centrifugal pump system comprises a liquid inlet pipe, a centrifugal pump and a liquid outlet pipe. A liquid inletof the centrifugal pump communicates with one end of a liquid inlet pipe, and the other end of the liquid inlet pipe is located in a liquid suction pool. A liquid outlet of the centrifugal pump communicates with a liquid outlet pipe. The pump filling system comprises a check valve and an air extracting assembly. The check valve is arranged at one end of the liquid outlet pipe, so that the liquidinlet pipe, the centrifugal pump and the liquid outlet pipe form a closed space before the centrifugal pump is started. The air extracting assembly communicates with the highest point of the centrifugal pump system, and the highest point is close to one side of the centrifugal pump. The closed space is pumped before startup of the centrifugal pump, so that liquid in the liquid suction pool entersthe centrifugal pump to finish filling of the pump. The system has the beneficial effects that the air extracting assembly is adopted and communicates with the highest point of the centrifugal pump system, and air in the centrifugal pump can be completely exhausted, and is not limited by the height of the centrifugal pump, so that the exhaust air of the vacuum pump is thorough.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a pump filling system and a pump filling method of a centrifugal pump system. Background technique [0002] Before starting the centrifugal pump, the pump casing and the suction port must be filled with liquid. Then start the motor of the centrifugal pump, so that the pump shaft drives the impeller to rotate at a high speed. The liquid enters the pump casing through the suction port of the centrifugal pump. The liquid is thrown to the outer edge of the impeller under the action of centrifugal force, and flows out through the flow channel of the volute pump casing to the liquid outlet of the centrifugal pump. If the centrifugal pump is not injected with liquid in advance before starting, the centrifugal force generated when the gas in the center of the impeller of the centrifugal pump is thrown is small, and the liquid cannot be transported, resulting in gas binding. ...

Claims

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Application Information

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IPC IPC(8): F04D9/04F04D29/00F04D15/00
CPCF04D9/04F04D15/0005F04D15/0088F04D29/007
Inventor 刘艳珍毛建强
Owner 辽宁三三工业有限公司