CN2445314Y

CN2445314Y - Hand piston manometer fitted with supercharger

Info

Publication number: CN2445314Y
Application number: CN 00226121
Authority: CN
Inventors: 刘伟巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-23
Filing date: 2000-02-23
Publication date: 2001-08-29
Anticipated expiration: 2010-02-23

Abstract

The utility model provides a hand piston manometer fitted with a supercharger, which is characterized in that the pressurization part of the utility model is composed of a hand pump and a supercharger. An operator can use small force to rotate the hand pump to pressurize the supercharger, and the supercharger can output very high pressure intensity to carry out high-voltage testing for a pressure measuring instrument. The hand piston manometer has the advantages of labour-saving operation and good sealing performance, and easily realizes the testing for a high range pressure measuring instrument.

Description

The hand-rail type piston manometer of supercharger is housed

The utility model relates to a kind of hand-rail type piston manometer that is used for the detected pressures measurement instrument, particularly a kind of hand-rail type piston manometer that supercharger is housed.

Existing hand-rail type piston manometer is to pressurize to system with wobble pump, and when detecting high pressure, the rotation wobble pump need be used very big strength, and this has caused certain difficulty for the testing of pressure measuring instruments.

The purpose of this utility model is that a kind of improved hand-rail type piston manometer will be provided, it is equipped with a supercharger, the operator can pressurize to supercharger with little strength rotation wobble pump, just can make the very high pressure of supercharger output, in order to realize the high pressure detection to pressure measuring instruments.

The utility model is achieved in that wobble pump is connected by the booster cavity of first stop valve with plunger shaft, pressure measuring instruments and the supercharger of piston manometer; Be connected with the low-pressure cavity of supercharger and the lubricating cup that has a stop valve respectively by second stop valve.Open lubricating cup stop valve and second stop valve, the fluid in the lubricating cup just can enter in the wobble pump plunger shaft.Open first stop valve, close second stop valve, available wobble pump is given the oil-filled pressurization of booster cavity of plunger shaft, pressure measuring instruments and the supercharger of piston manometer, and promotion supercharger plunger is pushed into the piston cylinder bottom with intensifier piston.Close first stop valve and lubricating cup stop valve, open second stop valve, available wobble pump is given the oil-filled pressurization of low-pressure cavity of supercharger, promotes the plunger compression booster cavity volume of supercharger, and booster cavity pressure is increased.By force balance principle as can be known, the ratio of the piston area of supercharger and ram area equals the booster cavity pressure of supercharger and the ratio of low-pressure cavity pressure.Therefore, the operator can just can make the booster cavity of supercharger produce very high pressure with little strength rotation wobble pump by the low-pressure cavity pressurization to supercharger, detects with the high pressure of realization to pressure measuring instruments.

The utility model makes the pressure detection operation very laborsaving, and has improved the sealing property of piston manometer and the serviceable life of wobble pump owing to adopted supercharger on the hand-rail type piston manometer.

Below in conjunction with accompanying drawing principle of work of the present utility model is done with detailed explanation.

Accompanying drawing is a fundamental diagram of the present utility model.

With reference to accompanying drawing, earlier stop valve [3], [4], [5] are opened, screw out wobble pump screw rod [1], the fluid in the lubricating cup [6] is entered in the plunger shaft [2] of wobble pump.Then, close stop valve [4], wobble pump screw rod [1] is screwed in, the fluid in the wobble pump plunger shaft [2] is pressed in the booster cavity [9] of plunger shaft [7], pressure measuring instruments [8] and supercharger of piston manometer, be its oil-filled pressurization, and intensifier piston [11] is pushed into the bottom.When need are used the supercharger supercharging, close stop valve [3], [5], open stop valve [4], wobble pump screw rod [1] is continued to screw in, fluid in the wobble pump plunger shaft [2] is pressed in the supercharger low-pressure cavity [12], promotes intensifier piston [11] and plunger [10] and moves, and the plunger of supercharger [10] is pressed into the fluid in the booster cavity [9] in the plunger shaft [7] and pressure measuring instruments [8] of piston manometer, give its supercharging, to realize high pressure detection to pressure measuring instruments.

Claims

A kind of hand-rail type piston manometer that is used for the detected pressures measurement instrument, the pressures partially that it is characterized in that this hand-rail type piston manometer is made up of a wobble pump and a supercharger, and the plunger shaft of wobble pump [2] is connected by the booster cavity [9] of stop valve [3] with plunger shaft [7], manometer [8] and the supercharger of piston manometer; The plunger shaft of wobble pump [2] is connected with the low-pressure cavity [12] of supercharger and stop valve [5], lubricating cup [6] respectively by stop valve [4].