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Method and device for calibrating flow of gas combustibility test

A technology of calibration device and calibration method, applied in measurement device, test/calibration device, liquid/fluid solid measurement, etc. Operability, saving experiment time, low cost effect

Inactive Publication Date: 2010-04-21
SHANGHAI RES INST OF CHEM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Oxygen analyzer will be interfered by the gas to be measured, which will make the measurement result inaccurate, the operation of gas chromatography is cumbersome, the metering pump method and the vacuum method in the national standard are poor in operability, and the measurement error is large for the case of low explosion limit

Method used

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  • Method and device for calibrating flow of gas combustibility test
  • Method and device for calibrating flow of gas combustibility test
  • Method and device for calibrating flow of gas combustibility test

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Embodiment

[0028] A flow calibration method and device for a gas combustibility test, the structure of which is as follows figure 1 As shown, the calibration device includes a manual glass rotameter 1, a gas mixing bottle 2, a three-way valve 3, a volumetric calibration flowmeter 4, an electric regulating valve 5 and an electric flowmeter 6, a manual glass rotameter 1 and an electric flowmeter. The flowmeter 6 is set on the panel of the gas combustion test flow calibration device. The manual glass rotameter 1 is connected to the reaction tube 7 through a pipeline. The reaction tube 7 is provided with a ball valve 8. The positive displacement calibration flowmeter 4 is set on the gas combustion chamber. On the panel of the flow calibration device for the performance test, the gas mixing bottle 2 is connected to the manual glass rotameter 1 and the volumetric calibration flowmeter 4 through the three-way valve 3, and the gas can enter the volumetric calibration flowmeter 4 through the three...

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Abstract

The invention relates to a method and a device for calibrating the flow of a gas combustibility test. The method comprises the following steps: introducing a gas into a manual glass rotameter or an electric flow meter; adjusting the flow of the gas, and recording the volume of the gas passing through a volume calibrating flow meter in certain time by a stopwatch; and acquiring a flow calibration curve of the gas by using the reading values of the flow meter as abscissas and the values of the actual flow as ordinates. The calibrating device comprises the flow meter, the calibrating flow meter, a gas mixing cylinder, a three-way valve and an electric control valve, wherein the flow meter and the calibrating flow meter are designed on a panel of the device; the gas mixing cylinder is connected with the flow meter and the calibrating flow meter; and the three-way valve is arranged between the gas mixing cylinder and the calibrating flow meter. The method and the device simplify the testing device and the operation steps and improve the operability of the test, have the advantages of small equipment volume, low cost, compact device structure, simple operation and low operation cost, save the testing time, improve the working efficiency, and have wide application and good security.

Description

technical field [0001] The invention relates to a flow calibration method and device, in particular to a flow calibration method and device for a gas combustion test. Background technique [0002] The mixed gas of flammable gas and air is not all flammable. Only when the concentration of flammable gas in the mixed gas is within a certain appropriate range, it has the possibility of burning. This appropriate concentration range is called the flammability range. The upper and lower limits of the concentration range are collectively referred to as the flammability limits. [0003] For the determination of gas flammability and its combustion limit, most of the method definitions and literature reports are carried out at normal temperature and pressure. Among them, the detection method introduced in the ISO 10156-1996 standard is a dynamic quantitative gas distribution method. The gas to be measured is mixed with air and then ignited in a glass reaction tube to observe its flamm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00G01N31/12
Inventor 章明洪刘刚张小沁朱涛
Owner SHANGHAI RES INST OF CHEM IND
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