Liquid gasifying and flow control device for measuring combustion limit of combustible liquid steam

A technology of combustion limit and flow control, applied in the direction of material flash point, investigation stage/state change, etc., can solve the problems of existence, difficult gas form of flammable liquid vapor, and high temperature flow control process cannot be solved, and achieves good safety, Low cost and simple results

Inactive Publication Date: 2014-03-05
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

Because it is difficult for flammable liquid vapor to exist in the form of gas under normal temperature conditions, and the related high-temperature flow control process has not been able to solve the problem.

Method used

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  • Liquid gasifying and flow control device for measuring combustion limit of combustible liquid steam

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Embodiment

[0030] A liquid vaporization and flow control device for the determination of the flammability limit of flammable liquid vapor, its structure schematic diagram is as follows figure 1 As shown, the device includes a combustion limit measuring tube 1, an observation window 2 installed at both ends of the measuring tube 1, a safety valve 3, an ignition electrode 4, a heating and temperature control device 5, a vacuum pressure gauge 6, an AC power supply 7, and a high-voltage transformer 8 , High temperature valve 9, air replenishment device 10, flammable vapor storage pipe 11, vacuum pump 12, liquid injection port 13, liquid storage pipe 14. The ignition electrode 4 goes deep into the inside of the measuring tube through one end of the measuring tube 1 , and provides different ignition energies by adjusting the high-voltage transformer 8 . The liquid storage pipe 14 is used to store various liquids (gas falls through this step), and the upper part is equipped with a safety valve ...

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Abstract

The invention provides a liquid gasifying and flow control device for measuring the combustion limit of combustible liquid steam. The liquid gasifying and flow control device comprises a liquid storage pipe, a gas storage pipe, a measuring pipe, a heating and temperature-control device, ignition equipment, a high-temperature-resistant pipeline, a vacuum pressure gauge, a high-temperature-resistant valve and a vacuum pump, wherein the liquid storage pipe, the gas storage pipe and the measuring pipe are connected in sequence by pipelines; the liquid storage and the measuring pipe are respectively provided with a safety valve. The liquid gasifying and flow control device provided by the invention has the advantages that the promotion is high, not only can multiple combustible liquid steam be measured, but also the measurement under different pressures can be carried out simultaneously.

Description

technical field [0001] The invention belongs to the technical field of measuring the combustion limit of flammable liquid vapor, in particular, the invention relates to a liquid gasification and flow control device for measuring the combustion limit of flammable liquid vapor. Background technique [0002] Flammable vapors (both flammable gases and flammable liquid vapors) have two flammability limits in air. The lower limit is the minimum ratio of gas to air required for combustible steam to burn in air; the upper limit is the maximum concentration of air and steam. Only when the concentration of vapor in the mixed gas is between the upper and lower limits is it flammable. [0003] The principle of the combustible gas combustion limit measuring device is to mix the gas to be tested with air in a certain proportion, ignite it in a glass reaction tube, observe its flammability, and then measure the concentration range of its combustion. However, for the determination of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/52G01N25/12
Inventor 汪箭丁超周德闯陈钦佩
Owner UNIV OF SCI & TECH OF CHINA
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