Outer ring type efficient start system for self-priming pump and start method thereof

A high-efficiency start-up and self-priming pump technology, which is applied to components, pumps, and drive pumps of pumping devices for elastic fluids, can solve problems such as high manufacturing and operating costs, and poor applicability of jet-type self-priming pumps. Easy processing, obvious energy saving effect, and improved fluidity

Active Publication Date: 2012-12-26
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] This kind of self-priming pump has the advantages of high efficiency and short self-priming time, but due to its high manufacturing and operating costs, and the need to set up other additional conditions for use such as an air source on the site, the applicability of the jet-type self-priming pump is poor. , so this kind of self-priming pump is generally less used

Method used

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  • Outer ring type efficient start system for self-priming pump and start method thereof
  • Outer ring type efficient start system for self-priming pump and start method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] like figure 1 As shown, the rated flow rate of the main pump is 12.5m 3 / h, rated head 32m, self-priming height 5m. The outer ring type high-efficiency start-up system in this embodiment does not contain a control device, and only an overflow pipe 10 is provided on the gas-liquid separation tank 9 .

[0075] 1) Close the pump inlet regulating valve 3 and the pump outlet regulating valve 7, open the tank inlet regulating valve 8 and the tank outlet regulating valve 1, start the main pump 5, and make the water circulate between the main pump 5 and the gas-liquid separation tank 9;

[0076] 2) When the tank outlet regulating valve 1 is fully open, gradually adjust the opening of the tank inlet regulating valve 8 so that the third pressure detection device 6 displays the rated pressure value of the main pump as 0.32MPa;

[0077] 3) Then gradually adjust the opening of the tank outlet regulating valve 1 to adjust the pressure value displayed by the second pressure detectio...

Embodiment 2

[0080] like figure 2 As shown, the rated flow rate of the main pump is 12.5m 3 / h, rated head 32m, self-priming height 5m. The outer ring type high-efficiency start-up system in this embodiment includes a control device, and a liquid level detection device is installed on the gas-liquid separation tank 9 . The pump inlet regulating valve 3, the pump outlet regulating valve 7, the tank inlet regulating valve 8 and the tank outlet regulating valve 1 are all electric regulating valves, and are all electrically connected to the signal output end of the control device 14; the first pressure detection The signal output ends of the device 2, the second pressure detection device 4, the third pressure detection device 6, and the liquid level detection device are all electrically connected to the signal input end of the control device 14; the main pump 5 can be started by the control device 14, or manually start up.

[0081] 1), the control device 14 closes the pump inlet regulating...

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Abstract

The invention belongs to the technical field of a self-priming pump, and particularly relates to an outer ring type efficient start system for the self-priming pump and a start method thereof. The outer ring type efficient start system comprises a main pump which is communicated with a water pool, a pump inlet adjusting valve, a pump outlet adjusting valve, a gas-liquid separation device, a first pressure detecting device, a second pressure detecting device and a third pressure detecting device. All the parts of the invention form a vacuum adjusting system together. The vacuum adjusting system is used to facilitate circular flow of liquid in a circular pipeline outside the pump and enable a water inlet pipeline of the main pump to be in a vacuum state so that gas and liquid can be absorbed into the main pump, the gas absorbed into the main pump is exhausted in the gas-liquid separation device, and eventually the main pump achieves self-priming to complete start process. The outer ring type efficient start system for the self-priming pump and the start method thereof are simple in structure, quick in start, simple in main pump flow channel and convenient to process, flowability of the flow channel is greatly improved, the main pump needs no other auxiliary systems so that loss inside the pump is avoided, and accordingly operation efficiency of the main pump is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of self-priming pumps, and in particular relates to an outer ring type high-efficiency starting system for self-priming pumps and a starting method thereof. Background technique [0002] Ordinary centrifugal pumps do not have a self-priming function. When the impeller of the centrifugal pump is above the liquid level, the centrifugal pump needs to be pre-filled with liquid before each start of the centrifugal pump. Therefore, it is very inconvenient to start and use the ordinary centrifugal pump. . [0003] The self-priming pump is designed and improved through structural design, so that no irrigation is required before the pump is started (except for the first start), and the normal operation of the pump is achieved by sucking up the liquid by the pump itself after a short period of operation. [0004] At present, self-priming pumps can be divided into the following categories according to their working pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D9/02F04D29/00
Inventor 刘广兵蒋青操松林吴生盼王蔷薇庞雷
Owner HEFEI GENERAL MACHINERY RES INST
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