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Pulsation damping device, screw pump and liquid pressure pulsation adjusting method

A pulsation damping, screw pump technology, used in liquid fuel engines, gas/liquid distribution and storage, rotary piston/oscillating piston pump combinations, etc., can solve problems such as poor versatility, eliminate pulsation or reduce pressure pulsation The effect of amplitude, increased pressure cushioning, increased versatility and flexibility of application

Pending Publication Date: 2020-11-10
无锡唯勒科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of poor pressure pulsation reduction effect and poor versatility of the pulsation damper in the prior art, the present invention provides a pulsation damper, which can meet the pressure pulsation absorption requirements of fluids with different viscosities, can improve the versatility, and at the same time Significantly reduces pressure pulsation amplitude

Method used

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  • Pulsation damping device, screw pump and liquid pressure pulsation adjusting method
  • Pulsation damping device, screw pump and liquid pressure pulsation adjusting method

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Embodiment Construction

[0026] See figure 1 , a pulsation damping device, which includes a housing 1, an air inlet 2, an elastic diaphragm 3 installed in the housing 1, the air inlet 2 is used to connect with an external air source, the housing 1 is a split structure, It includes a convex upper shell 11, an I-shaped middle shell 12, and a concave lower shell 13 distributed sequentially from top to bottom. The middle part of the upper shell 11 has a first through hole 110 communicating with the air inlet 2, The middle part of the lower casing 13 is provided with a second through hole 130 communicating with the liquid conveying pipeline. In this embodiment, the liquid conveying pipeline is the pump body 10 of the screw pump. See figure 2 ;

[0027] Inside the housing 1 , there are T-shaped slots at the joints between the upper housing 11 and the middle housing 12 , and between the middle housing 12 and the lower housing 13 .

[0028] Diaphragm 3 comprises two, respectively is the first diaphragm 31,...

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Abstract

The invention discloses a pulsation damping device, a screw pump and a liquid pressure pulsation adjusting method. The pressure pulsation absorption requirements of fluids with different viscosities can be met, the universality can be improved, and the pressure pulsation amplitude can be greatly reduced at the same time. The pulsation damping device comprises a shell, an air inlet and elastic membranes arranged in the shell; the shell is of a split structure, the elastic membranes are arranged in the shell, the number of the membranes is at least two, every two adjacent membranes are fixed inthe shell at intervals and divide the shell into at least three cavities which are not in communication with one another; an air inlet is in communication with the upper cavity, the lower cavity is incommunication with a liquid conveying pipeline, and a pressure regulating valve is arranged between the air inlet and the upper cavity; and the screw pump comprises a pump body, a feeding port, a discharging port, a screw and a screw driving device, and the pulsation damping device is installed at the top end of the pump body. The method for adjusting the liquid pressure pulsation in the screw pump through the pulsation damping device is adopted, and the gas pressure in the upper cavity is adjusted through the pressure adjusting valve according to the liquid pressure pulsation amplitude in the pump body.

Description

technical field [0001] The invention relates to the technical field of a pulsation damper or a screw pump, in particular to a pulsation damper capable of effectively reducing the amplitude of liquid pressure pulsation, a screw pump using the pulsation damper, and a method for adjusting liquid pressure pulsation. Background technique [0002] The pulsation damper is a pressure vessel that eliminates liquid pressure pulsation or flow pulsation. It is used in the transportation of fluid substances because of its functions of stabilizing fluid pressure and flow, eliminating vibration, and increasing pump volume efficiency. In actual processing In production, the choice of pulsation damper is determined after comprehensive calculation and analysis based on parameters such as flow rate, pressure, pump type, pulsation elimination rate, pipeline fluid composition, pipeline fluid density, and pipeline fluid viscosity. [0003] At present, commonly used pulsation dampers include airba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/05F16F13/10F17D1/20F04C14/24F04C15/00F04C2/107F04C11/00F04C13/00
CPCF16L55/05F16F13/101F16F13/102F16F13/103F16F13/105F17D1/20F04C14/24F04C15/00F04C15/0049F04C2/107F04C11/008F04C13/002F04C2270/185F04C2270/145F04C2270/125
Inventor 何宏
Owner 无锡唯勒科技有限公司
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