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Centrifugal pump capable of reducing internal pressure pulsation

An internal pressure, centrifugal pump technology, applied in the field of centrifugal pumps, can solve problems such as unstable flow of centrifugal pumps, and achieve the effects of avoiding adverse effects, good effect and convenient operation.

Inactive Publication Date: 2021-02-26
潘碧琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing centrifugal pumps have certain disadvantages when they are in use. Unstable flow is prone to occur inside the centrifugal pump, forming a large pressure pulsation, which brings certain adverse effects on the centrifugal pump body and supporting facilities. Therefore, we propose a Centrifugal pumps to reduce internal pressure pulsations

Method used

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  • Centrifugal pump capable of reducing internal pressure pulsation
  • Centrifugal pump capable of reducing internal pressure pulsation
  • Centrifugal pump capable of reducing internal pressure pulsation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 and figure 2 As shown, a centrifugal pump that can reduce internal pressure pulsation includes a base 1. There are reserved mounting holes in the structure of the base 1, and the number of reserved mounting holes is four groups. The reserved mounting holes and bolts and other fasteners are used to fix the base 1. A pump body 4 and a motor 5 are arranged above the base 1. A first support column 2 is installed between the pump body 4 and the base 1 through bolts. The motor 5 and the The second support column 3 is installed between the base 1 by bolts. The first support column 2 and the second support column 3 respectively support the pump body 4 and the motor 5. The side of the pump body 4 away from the motor 5 is welded An input pipeline 6 is fixedly installed, and an output pipeline 8 is fixedly installed on the outer wall of the pump body 4 through welding.

Embodiment 2

[0022] On the basis of Embodiment 1, such as figure 1 As shown, one end of the input pipeline 6 is fixedly installed with a first flange 7 by welding, the side of the first flange 7 is provided with a first sealing ring, and the top of the output pipeline 8 is fixedly installed with a second flange by welding 9. The top of the second flange 9 is provided with a second sealing ring to improve the sealing effect after the butt joint.

Embodiment 3

[0024] On the basis of Embodiment 1, such as figure 1 , figure 2 and image 3 As shown, the outer wall of the pump body 4 is provided with a pressure relief valve 10, the pressure relief valve 10 is composed of a connecting pipe 11, a fixed seat 12, a supporting pipe body 13, a first valve body 14, a second valve body 15, a third flange 16. The fourth flange 17, spring 18, piston 19 and one-way valve 20 are composed. The fixed seat 12 is fixedly connected with the outer wall of the pump body 4 through bolts. The pressure relief valve 10 can reduce the internal pressure pulsation of the centrifugal pump and avoid excessive pressure. The pressure pulsation of the centrifugal pump itself and supporting facilities have adverse effects.

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PUM

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Abstract

The invention discloses a centrifugal pump capable of reducing internal pressure pulsation. The centrifugal pump comprises a base, wherein four sets of reserved mounting hole positions are formed in the structure of the base; a pump body and a motor are arranged above the base; a first supporting column is fixedly mounted between the pump body and the base through a bolt; a second supporting column is fixedly mounted between the motor and the base through a bolt; and an input pipeline is fixedly mounted on one side, away from the motor, of the pump body through welding. According to the centrifugal pump capable of reducing internal pressure pulsation disclosed by the invention, when pressure pulsation is generated inside the pump body of the centrifugal pump and pressure exceeds a threshold value of a pressure release valve, a piston is pushed and a spring is forced to shrink; when the position of the piston is higher than a mounting height of a connecting pipe, fluid is automaticallydischarged, passes through the connecting pipe and reenters the input pipeline, so that pressure release is completed; and in this way, internal pressure pulsation of the centrifugal pump is reduced,so that adverse effects, on the centrifugal pump and supporting facilities, of too high pressure pulsation are avoided.

Description

technical field [0001] The invention relates to the field of centrifugal pumps, in particular to a centrifugal pump capable of reducing internal pressure pulsation. Background technique [0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated when the impeller rotates. Centrifugal pumps work by rotating the impeller to cause the water to move centrifugally. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows through the volute pump casing. The pressure water pipeline flowing into the water pump. The existing centrifugal pumps have certain disadvantages when they are in use. Unstable flow is prone to occur inside the centrifugal pump, forming a large pressure pulsation, which brings certain adverse effects on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/00F04D15/00F04D29/62F04D29/42F04D29/08F04D29/66
CPCF04D1/00F04D15/00F04D15/0005F04D15/0077F04D29/628F04D29/426F04D29/086F04D29/669
Inventor 潘碧琼
Owner 潘碧琼