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Reciprocating piston pump with improved air inlet valve

A piston pump, reciprocating technology, applied to the components of the pumping device for elastic fluids, variable displacement pump components, pump components, etc., can solve the problems of vaporization, reducing pumping efficiency, etc.

Inactive Publication Date: 2015-01-14
WESTPORT POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is especially important when the fluid being pumped is liquefied gas, as too much pressure drop can cause vaporization of the liquefied gas and reduce pumping efficiency

Method used

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  • Reciprocating piston pump with improved air inlet valve
  • Reciprocating piston pump with improved air inlet valve
  • Reciprocating piston pump with improved air inlet valve

Examples

Experimental program
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Embodiment Construction

[0022] Figure 1 to Figure 3 The pump assembly 100 shown in includes a reciprocating pump connected by a shaft to a drive. One example of an application of such a pump assembly is for the delivery of liquefied gas (such as LNG) to be consumed as fuel in an internal combustion engine. Because LNG is stored at low temperatures, the piston pump is shown at what is referred to herein as the cold end 110 , and the drive at the opposite end is referred to herein as the warm end 112 . Although the disclosed pump is described with respect to this particular application, it should be understood that the same improvements can be employed with other pumps operating with fluids being pumped at temperatures close to their boiling point, and the pressure drop in the pumping apparatus Used when the fluid can be vaporized.

[0023] figure 1 and figure 2 Shown are perspective and cross-sectional views of a pump assembly 100 comprising a drive unit 116 at a warm end 112, an intake tube 118...

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PUM

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Abstract

The invention relates to a reciprocating piston pump. The reciprocating piston pump comprises an air inlet valve with a valve component, wherein the valve component can move between an open position on which a head part of the valve component is spaced apart from a valve seat and a closing position on which the head part of the valve component contacts the valve seat through the fluid force. The valve component comprises a valve rod, and the valve rod does not block the fluid flowing by an inlet of the valve. When the valve is closed, the head part, which is contacted with the valve seat, of the valve component is in a spherical shape or a docked conical shape. The valve component is made of a polymer material. The valve component can be brought to the close position by the air inlet valve without adopting a bias component.

Description

technical field [0001] The present disclosure relates to a reciprocating piston pump with an improved intake valve arrangement. Background technique [0002] Reciprocating piston pumps are used to transfer fluids in a variety of applications. In order to improve pump performance, there is a need to reduce pressure losses caused by blockages and restrictions in the fluid flow area, especially around the pump inlet and outlet. This is especially important when the fluid being pumped is liquefied gas, because too much pressure drop can cause vaporization of the liquefied gas and reduce pumping efficiency. When too much liquefied gas is boiled off, the pump will stop. Reciprocating piston pumps are being used in automotive applications, for example, to deliver fuel such as liquefied natural gas (LNG) to internal combustion engines. In some systems fueled with gaseous fuels, the piston pump must deliver fuel at a pressure of at least about 3000 psi and sometimes as high as 400...

Claims

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Application Information

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IPC IPC(8): F04B53/10
Inventor R·A·萨恩斯任子元閤明洲
Owner WESTPORT POWER
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