FOLD-BACK COAXIAL GAS BOOSTER PUMP AND GAS PRESSURE CREATING METHOD

Title:

FOLD-BACK COAXIAL GAS BOOSTER PUMP AND GAS PRESSURE CREATING METHOD

Document Type and Number:

WIPO Patent Application WO/2014/166259

Kind Code:

A1

Abstract:

Disclosed are a fold-back coaxial gas booster pump and a gas pressure creating method, belonging to the field of gas pressure creation. The fold-back coaxial gas booster pump comprises a primary gas cylinder, a primary piston, a secondary gas cylinder serving as a primary piston connecting rod, a pressure rod, a gas pump cover, a secondary piston and a piston connecting rod, wherein the primary gas cylinder, the secondary gas cylinder and the piston connecting rod are coaxially installed, and the rear end of the piston connecting rod penetrates through a first follow-up one-way valve installed in the primary piston and is fixed on the bottom wall of the primary gas cylinder, so that the two pistons move in opposite directions to boost the pressure. The fold-back coaxial gas booster pump is composed of a two-stage compression gas pump, and can realize two stages of compression during one movement, so that the gas compression reaches a higher pressure range, the gas compression efficiency is improved, the power required for compressing gas is reduced, and the fold-back design enables the product to be miniaturized. The fold-back coaxial gas booster pump is pressure creating equipment which is light in weight, convenient to carry and high in pressure, and is suitable for field instrument calibration.

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WO/2015/070114

INJECTION PUMP SYSTEM AND CONTROL

Inventors:

JIANG WEILI (CN)

Application Number:

PCT/CN2013/087512

Publication Date:

October 16, 2014

Filing Date:

November 20, 2013

Export Citation:

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Assignee:

BEIJING CONST INSTR TECHNOLOGY INC (CN)

International Classes:

F04B37/12; F04B25/04

Foreign References:

CN103233876A	2013-08-07
CN203201743U	2013-09-18
CN101737294A	2010-06-16
JP2009097495A	2009-05-07
CN2170397Y	1994-06-29
CN202517436U	2012-11-07

Other References: