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Combustible Gas Limiting Oxygen Concentration Parameter Measuring Device and Operation Method

A technology for the determination of limiting oxygen concentration and parameters, which is used in measuring devices, fuel testing, instruments, etc. It can solve the problem of no flammable gas limiting oxygen concentration measuring device, etc., and achieve the effect of reasonable structure, stable performance and convenient operation.

Active Publication Date: 2018-05-08
应急管理部天津消防研究所 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no measuring device specifically for the determination of the limit oxygen concentration of combustible gases in my country to achieve rapid oxygen concentration calibration and determination

Method used

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  • Combustible Gas Limiting Oxygen Concentration Parameter Measuring Device and Operation Method
  • Combustible Gas Limiting Oxygen Concentration Parameter Measuring Device and Operation Method
  • Combustible Gas Limiting Oxygen Concentration Parameter Measuring Device and Operation Method

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Embodiment Construction

[0021] like figure 1 , 3 , 4, combustible gas limiting oxygen concentration measuring device, including a fast sealing cap 1, explosion experiment container tank 2, multi-channel precision proportional gas distribution device 3, gas agitator device 4, oxygen concentration detection device 5, ignition Device 6, control unit 7, data acquisition unit 8, computer wireless monitoring system 9 and base 44 constitute, and described explosion experiment container tank 2 is the spherical stainless steel explosion tank of 20 liters, and flat opening at the central position of upper and lower surfaces of the sphere, opening The upper flange 10 and the bottom flange 11 are respectively fixed, the center positions of the front and rear surfaces are flat openings, and observation windows 16 and fixed flanges 17 are respectively installed at the openings, the left and right center positions are flat openings at the center of the surface, and automatic air distribution inlets are respectively...

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Abstract

The invention relates to a device for measuring a limit oxygen concentration parameter of combustible gas and an operating method. The device comprises a quick sealing screw cover, an explosion experiment container tank, a multi-path precision proportional gas distribution device, a gas stirrer device, an oxygen concentration detection device, an igniting device, a control unit, a data acquisition unit, a computer wireless monitoring system and a base, wherein the multi-path precision proportional gas distribution system achieves gas distribution and sample injection so as to achieve measurement of the limit oxygen concentration of the combustible gas at normal temperature and under normal pressure; the gas stirring system is mounted at the inner bottom of the explosion container so as to achieve rapid uniform mixing of the combustible gas in the explosion experiment container tank; the quick sealing screw cover achieves rapid sealing; through increase of the volume fraction of inert gas, the limit air concentration LAC of the combustible gas is measured, and the limit oxygen concentration LOC of the combustible gas to be measured is calculated. The device has the technical effects as follows: the device adopts a modular design, is stable in performance, reasonable in structure, convenient and fast to operate, safe and reliable, and can simultaneously achieve measurement of a variety of explosion parameters.

Description

technical field [0001] The invention relates to an explosion parameter measuring device, in particular to a combustible gas limit oxygen concentration parameter measuring device and an operation method. Background technique [0002] Limiting oxygen concentration and explosion limit are two important parameters that characterize the explosive characteristics of combustible gas (liquid vapor). In many industrial production occasions, the oxygen concentration of flammable gas, flammable vapor or their mixture is regarded as an important safety technical index. The determination of limit oxygen concentration can provide a basis for the control of oxygen concentration in explosive environments, help prevent and reduce flammable gas fire and explosion accidents, and also provide oxygen concentration alarm indications for flammable gas environments and their equipment or containers. [0003] The relevant standards for the determination of the limiting oxygen concentration of combu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/22
CPCG01N33/225
Inventor 任常兴管长勇李晋姜楠张网张欣吕东张琰
Owner 应急管理部天津消防研究所
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