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On-sit calibrating method and apparatus for gas meter for household use

A gas meter and household technology, applied in measuring devices, testing/calibration devices, instruments, etc., can solve the problems of long verification time and high cost, and achieve the effects of intuitive judgment, wide application range and high measurement accuracy

Inactive Publication Date: 2009-02-04
别振丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Using this method for verification, the gas meter used by the user needs to be removed and sent to the standard measurement room for long verification time and high cost

Method used

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  • On-sit calibrating method and apparatus for gas meter for household use
  • On-sit calibrating method and apparatus for gas meter for household use
  • On-sit calibrating method and apparatus for gas meter for household use

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Experimental program
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Effect test

Embodiment Construction

[0038] exist figure 1 Among them, the requirements of the verification device: the accuracy of the standard gas meter is 1 / 3 higher than that of the meter to be calibrated and the standard meter with an automatic reading device. The accuracy is delivered by the national authorized standard measurement room value. 2. The graduation value of the thermometer is ≤0.2℃. 3 Pressure gauge resolution ≤ 10Pa.

[0039] Gas inlet pipe 1, meter front valve 2, user gas meter 3, meter rear valve 4 and stove front valve 9 are user gas facilities. The pressure gauge 5 in front of the gauge, the thermometer 6, the standard gas gauge 7 and the pressure gauge 8 behind the gauge are verification devices. Kitchen range switch 10, kitchen range nozzle 11, flow regulator 16, kitchen range burner comprise 17, small fire burner 13, medium fire burner 14, large fire burner 15 are user's kitchen range 12.

[0040] The gas inlet pipe 1 is connected to the inlet of the user gas meter 3 through the met...

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Abstract

The invention discloses an on-spot detecting method and a device of a family in-use gas meter. In the method, a meter front manometer, a thermograph, a standard gas meter and a meter back manometer are connected in series between a user gas meter and a cooker; a meter front valve and a meter back valve are opened and a stove front valve is closed for safety detection; after the safety detection, the stove front stove is opened, the stove is ignited, a small fire combustion mouth is ignited, a flow adjusting device is adjusted to a smallest flame for detecting the basic small flow error, then the small fire combustion mouth and a middle fire combustion mouth are ignited, the flow adjusting device is adjusted to a middle flame for detecting the basic middle flow error, and simultaneously the small fire combustion mouth, the middle fire combustion mouth and a large fire combustion are ignited, the flow adjusting device is adjusted to a large flame for detecting the basic large flow error, and an air through flow is over 50 liter in every detection. The device and the method can in-site detect the safety and the basic error of the family gas meter under in-use environment. The device and the method have the advantages of quick speed, short time, low cost, easy operation, safety and accuracy.

Description

technical field [0001] The invention relates to an on-site verification method for the safety and basic error of a gas meter in household use. Background technique [0002] For gas meters used in households, only the first compulsory verification is required, and the gas meters are used within a limited period and replaced when due. The service life of gas meters using artificial gas, liquefied petroleum gas, etc. as a medium generally does not exceed 6 years. The service life of gas meters using natural gas as the medium generally does not exceed 10 years. On-site verification methods for the key indicators of safety and basic errors of household gas meters in use have been being explored. [0003] The known gas meter verification method is carried out in a standard measurement room according to the requirements of JJG577-2005 "National Metrology Verification Regulations" (implemented on June 20, 2006). This method requires: [0004] 1 Establish a standard measurement r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 别振丽
Owner 别振丽
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