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Leakage alarm protection system for high-pressure hydrogen devices and leakage alarm protection method for high-pressure hydrogen devices

A high-pressure hydrogen and protection system technology, applied in alarms, instruments, etc., can solve problems such as difficulty in determining the location of leaks, lag in detection of leakage accidents, affecting production efficiency, etc., to achieve uniform hydrogen concentration and avoid hydrogen accumulation.

Pending Publication Date: 2021-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to problems such as lagging in the detection of leakage accidents of high-pressure hydrogen equipment and difficulty in determining the location of the leakage, which affects production efficiency

Method used

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  • Leakage alarm protection system for high-pressure hydrogen devices and leakage alarm protection method for high-pressure hydrogen devices
  • Leakage alarm protection system for high-pressure hydrogen devices and leakage alarm protection method for high-pressure hydrogen devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] refer to figure 1 As shown, in the high-pressure hydrogen equipment leakage alarm protection system of this embodiment, the protection object is the high-pressure hydrogen storage tank. The water volume of high-pressure hydrogen storage tank 10 is 1.5m 3 , the pressure is 42MPa, the volume of the shell 20 is 4.5m 3 . In this embodiment, three hydrogen gas concentration detectors are provided, the third hydrogen gas concentration detector 24 is arranged on the top of the high-pressure hydrogen storage tank 10 and the top of the housing 20, the fourth hydrogen gas concentration detector 25 and the fifth hydrogen gas concentration detector 26 They are respectively arranged on the position adjacent to the inlet and outlet pipelines of the high-pressure hydrogen storage tank 10 and on the side wall of the casing 20 . The ventilation device 23 is arranged at the center of the top of the casing 20, and the ventilation rate is adjustable between 5-35 times / hour. The PLC con...

Embodiment 2

[0061] refer to figure 1 As shown, there is no ventilation device. In the high-pressure hydrogen equipment leakage alarm protection system of this embodiment, the protection object is the high-pressure hydrogen storage tank. The volume of the high-pressure hydrogen storage tank is 1m 3 , the pressure is 42MPa, the shell volume is 3.5m 3 . In this embodiment, three hydrogen gas concentration detectors are provided, the third hydrogen gas concentration detector 24 is arranged on the top of the high-pressure hydrogen storage tank 10 and the top of the housing 20, the fourth hydrogen gas concentration detector 25 and the fifth hydrogen gas concentration detector 26 They are respectively arranged on the position adjacent to the inlet and outlet pipelines of the high-pressure hydrogen storage tank 10 and on the side wall of the casing 20 . The PLC controller presets the first threshold to be 0.4vol%, the second threshold to be 1.0vol%, and the third threshold to be 1.6vol%. The...

Embodiment 3

[0063] refer to figure 1 As shown, in the high-pressure hydrogen equipment leakage alarm protection system of this embodiment, the protection object is the high-pressure hydrogen storage tank. The volume of the high-pressure hydrogen storage tank is 2m 3 , the pressure is 42MPa, the shell volume is 7.5m 3 . In this embodiment, three hydrogen gas concentration detectors are provided, the third hydrogen gas concentration detector 24 is arranged on the top of the high-pressure hydrogen storage tank 10, the top of the housing 20, the fourth hydrogen gas concentration detector 25 and the fifth hydrogen gas concentration detector 26 They are respectively arranged on the position adjacent to the inlet and outlet pipelines of the high-pressure hydrogen storage tank 10 and on the side wall of the casing 20 . The ventilation device is arranged on the top of the housing, and the ventilation rate is adjustable between 5 and 35 times per hour. The PLC controller presets the first thres...

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Abstract

The invention discloses a leakage alarm protection system for high-pressure hydrogen devices, and the system comprises a shell which covers a high-pressure hydrogen device, wherein the high-pressure hydrogen device is communicated with the external environment through an inlet and outlet pipeline; a plurality of hydrogen concentration detectors which are arranged in the shell, wherein the positions, arranged in the shell, of the hydrogen concentration detectors are different; and a PLC controller which is in communication connection with the plurality of hydrogen concentration detectors, and when at least one of hydrogen concentration values detected by the plurality of hydrogen concentration detectors is greater than or equal to a first threshold value, triggers a primary linkage alarm action. The invention further discloses a leakage alarm protection method for the high-pressure hydrogen devices. According to the present invention, the shell is arranged outside the high-pressure hydrogen device, leakage accidents of the high-pressure hydrogen device can be quickly found through the hydrogen concentration detectors at different heights, faults are relieved or eliminated in time through linkage alarm actions, and serious safety accidents are avoided.

Description

technical field [0001] The invention relates to the field of safety assurance of high-pressure hydrogen equipment, in particular to an alarm protection system and an alarm protection method for high-pressure hydrogen equipment leakage. Background technique [0002] Fossil energy (coal, oil, natural gas) is a typical primary energy and is non-renewable. With the increasing awareness of environmental protection around the world, environmental pollution caused by the use of coal and petroleum is subject to increasingly strict restrictions. As a green energy in the 21st century, hydrogen energy has many advantages, such as diversified production methods, such as electrolysis of water, photolysis of water, hydrogen produced by chemical plants, etc.; after combustion, only water is produced without secondary pollution; It can be stored in low-temperature liquid hydrogen or in high-pressure gaseous state; it is a renewable energy source. In view of the many advantages of hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/16
CPCG08B21/16
Inventor 刘欢陶彬张健中王振中赵雯晴刘全桢
Owner CHINA PETROLEUM & CHEM CORP
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