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CO2 pressure reducer overall calibration method

A pressure reducer, the overall technology, applied in the direction of instruments, measuring fluid pressure, liquid/fluid solid measurement, etc., can solve problems such as instrument failures, and achieve the effect of avoiding failures

Inactive Publication Date: 2012-04-11
CRRC SHIJIAZHUANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no CO 2 An effective method for the overall verification of the pressure reducer, the general enterprise requires CO 2 CO of pressure reducer 2 table for periodic verification, CO 2 Table installed in CO 2 The valve body of the pressure reducer can only be verified after disassembly according to the conventional method, and the disassembly process often causes the failure of the instrument, so there is an urgent need for a CO 2 Method for verification of pressure reducer as a whole

Method used

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Embodiment Construction

[0022] Such as figure 1 As shown, the CO described in the present invention 2 The overall verification method of the pressure reducer, the steps are as follows:

[0023] First, connect the output end of the high-pressure gas source 1 to the intake valve 4 of the oxygen inhaler calibrator 2, and connect the outlet valve 5 of the oxygen inhaler calibrator 2 to the CO 2 The high pressure input end of the pressure reducer 3 is connected, and the CO 2 The low-pressure output end of the pressure reducer 3 is connected with the standard flow meter 6 of the oxygen inhaler calibrator 2, and the measurement upper limit of the standard flow meter is 25 L or 30 L.

[0024] Then start the verification, the verification steps are as follows:

[0025] CO first 2 Overall appearance and tightness inspection of the pressure reducer 3;

[0026] Then CO 2 The verification of the pressure gauge of the pressure reducer 3, the verification steps are as follows:

[0027] A. Check the zero valu...

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Abstract

The invention discloses a CO2 pressure reducer overall calibration method. The method comprises the following steps of: firstly connecting an output end of a high-pressure gas source with a gas inlet valve of an oxygen inhalator calibration instrument, connecting a gas outlet valve of the oxygen inhalator calibration instrument with a high-pressure input end of a CO2 pressure reducer, and connecting a low-pressure output end of the CO2 pressure reducer with a standard flow meter of the oxygen inhalator calibration instrument; then calibrating with the following steps of: firstly checking the overall appearance and tightness of the CO2 pressure reducer; then calibrating a pressure meter of the CO2 pressure reducer, and finally calibrating the CO2 flow meter. The CO2 pressure reducer overall calibration method provided by the invention can perform the overall calibration on the CO2 pressure reducer by using the oxygen inhalator calibration instrument without detaching the CO2 pressure reducer, thereby avoiding the fault; and besides calibrating the instrument pressure parameter, the CO2 pressure reducer overall calibration method further can be used for calibrating the flow parameter, is convenient and practical and meanwhile, can be used for the overall calibration of an industrial gas pressure reducer such as an argon pressure reducer and the like.

Description

technical field [0001] The invention relates to a test method, especially a CO 2 Integral verification method for pressure reducer, applicable to CO 2 Verification field of pressure reducer. Background technique [0002] CO 2 The pressure reducer is a decompression instrument for bottled gas, and it is also a CO 2 The necessary supporting equipment for the shielded welding machine is used to reduce the high-pressure gas to low-pressure gas and keep the pressure and flow of the output gas stable. Currently, there is no CO 2 An effective method for the overall verification of the pressure reducer, the general enterprise requires CO 2 CO of pressure reducer 2 table for periodic verification, CO 2 Table installed in CO 2 The valve body of the pressure reducer can only be verified after disassembly according to the conventional method, and the disassembly process often causes the failure of the instrument, so there is an urgent need for a CO 2 The method of checking the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L27/00G01F25/00
Inventor 李宗亮
Owner CRRC SHIJIAZHUANG CO LTD
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