Real-time detection device and method for leakage rate of bottled high-pressure heptafluoropropane fire extinguishing agent

A heptafluoropropane, real-time detection technology, applied in the direction of using liquid/vacuum for liquid tightness measurement, etc., can solve the problems of container corrosion, difficult to measure accurately, large error, etc., and achieve the effect of easy installation

Pending Publication Date: 2021-03-26
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent ZL 200620104737.9 achieves quantitative measurement by exhausting the air with water and collecting the leaked gas. However, this method often causes water vapor to corrode the container
Patent ZL 2015103286630 uses the differential pressure method to measure the leakage of containers and valves. Since the leakage rate of most bottled high-pressure heptafluoropropane is relatively weak, this method has large errors in actual use, and it is difficult to directly measure accurately

Method used

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  • Real-time detection device and method for leakage rate of bottled high-pressure heptafluoropropane fire extinguishing agent
  • Real-time detection device and method for leakage rate of bottled high-pressure heptafluoropropane fire extinguishing agent
  • Real-time detection device and method for leakage rate of bottled high-pressure heptafluoropropane fire extinguishing agent

Examples

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Embodiment 1

[0040] Such as figure 1 , figure 2 As shown, this embodiment is a real-time detection device for bottled high-pressure heptafluoropropane fire extinguishing agent leakage, which is installed on the bottle body 1 to be measured. The described heptafluoropropane fire extinguishing agent leakage detection device consists of a measuring chamber 2 and a vacuum fixed chamber 3 constitute the main part. The fire extinguishing agent delivery pipeline 12 passes through the opening for passing through the measuring cavity 2 and the vacuum fixed cavity 3, closes the left shell 21 of the measuring cavity and the right shell 22 of the measuring cavity, and connects the left shell 31 of the vacuum fixed cavity and the right shell of the vacuum fixed cavity. 32 is closed, so that the third sealing member 73 and the fourth sealing member 74 tightly wrap the fire extinguishing agent delivery pipeline 12, and the fire extinguishing agent delivery pipeline 12 is wrapped by the sealing ring 75,...

Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is that the bottled high-pressure heptafluoropropane fire extinguishing agent leakage detection device has been installed and the known working time is t k . Read the reading of the pressure gauge 51 and compare it with the reference pressure of 20kPa to judge the leakage state of the bottled high-pressure heptafluoropropane fire extinguishing agent; record the heptafluoropropane concentration values ​​detected by the lower gas detection module 62 and the upper gas detection module 64, and calculate got t k The amount of leakage and the leakage rate over time.

[0047] Connect the vacuum pump to the first interface 53, open the first valve 52, extract the gas in the measurement chamber 2, and disconnect the vacuum pump from the first interface 53, so that air enters the measurement chamber 2 Inside; repeat the above pumping steps until the lower gas detection module 62 and the upper gas detection module 64 show t...

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Abstract

The invention discloses a real-time detection device and method for the leakage rate of a bottled high-pressure heptafluoropropane fire extinguishing agent. The device comprises a measurement cavity and a vacuum fixing cavity which are installed on a to-be-measured bottle body, the measurement cavity is formed by closing a measurement cavity left shell and a measurement cavity right shell, and thevacuum fixing cavity is formed by closing a vacuum fixing cavity left shell and a vacuum fixing cavity right shell; and the measuring cavity left shell and the measuring cavity right shell as well asthe vacuum fixing cavity left shell and the vacuum fixing cavity right shell are connected and closed through shell fixing components. The vacuum air pump vacuumizes the measuring cavity and the vacuum fixing cavity by being connected with the first connector and the second connector, and the vacuum fixing cavity and the external environment form a pressure difference so as to be connected to themeasuring bottle body in an adsorption mode. Under the condition that the function of the bottled high-pressure heptafluoropropane is normally achieved, the small leakage amount of the bottled high-pressure heptafluoropropane can be collected for a long time, the accumulated leakage amount of the bottled high-pressure heptafluoropropane can be quantitatively measured, the measurement precision ishigh, and installation and operation are easy and convenient.

Description

technical field [0001] The invention relates to a bottle leakage detection device, in particular to a real-time detection device and method for the leakage of bottled high-pressure heptafluoropropane fire extinguishing agent. Background technique [0002] As a clean and efficient gas fire extinguishing agent, heptafluoropropane has been used in important key places such as communication room, computer room, generator room, power distribution room and precision instrument room. At present, most of the signal control rooms widely distributed along my country's high-speed rail use heptafluoropropane as a fire extinguishing agent. As the control brain of the high-speed rail system operation, the performance guarantee of the fire extinguishing system in the signal control room is of great significance to the safe operation of the entire high-speed rail system. At room temperature, heptafluoropropane is usually bottled and stored in liquid form, and the pressure inside the bottle ...

Claims

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Application Information

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IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 袁焱华卢启钊谢启源张俊
Owner UNIV OF SCI & TECH OF CHINA
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