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Fire extinguishing system of hydrogen pipeline flange joint

A fire extinguishing system and connection technology, which is applied in the field of fire extinguishing systems at the flange joints of hydrogen pipelines, can solve problems such as hydrogen leakage, untimely fire extinguishing, unusable pipeline connections, etc., and achieve the effect of improving the success rate

Active Publication Date: 2019-04-12
山东京博众诚清洁能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the reaction conditions required by the hydrogenation reaction are generally high, ordinary pipelines cannot withstand the high pressure state, so the current hydrogen pipelines in the refinery are mostly made of metal, and due to the requirements of the production process, welding valves cannot be used at the joints of the pipelines, so only The form of valve and flange connection is adopted, which leads to irregular installation or long-term use, and hydrogen leakage is very easy to occur at the flange connection
[0003] After the hydrogen gas leaks, the high-speed outflowing hydrogen gas will rub against the pipeline to generate static electricity. Since hydrogen gas is an extremely flammable gas, the static electrodes generated by friction can easily ignite the hydrogen gas, causing the hydrogen gas to leak and catch fire.
Moreover, since the flame of hydrogen combustion is light blue, it is not easy to be detected by the naked eye under sunlight, which leads to the failure of timely extinguishment of hydrogen leakage and fire, resulting in irreversible safety accidents

Method used

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  • Fire extinguishing system of hydrogen pipeline flange joint

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Embodiment

[0050] 1) Introduction of fire extinguishing system:

[0051] This embodiment provides a fire extinguishing system at the flange joint of the hydrogen pipeline, refer to the following figure 1 The fire extinguishing system of this embodiment is described:

[0052] The fire extinguishing system provided by this embodiment is installed around the flange connection of the hydrogen pipeline. The flange connection includes an upper flange surface 12 and a lower flange surface 13 arranged on the hydrogen pipeline 11. The two flange surfaces pass through 16 14 bolts are connected and fixed, and 16 bolts 14 are evenly distributed along the flange circumferential direction.

[0053] The fire extinguishing system provided in this embodiment includes 8 nitrogen injection devices 15 , 8 fire fighting foam injection devices 16 , a temperature monitoring device 17 and a control device 18 .

[0054] In this embodiment, 8 nitrogen injection devices 15 are evenly distributed along the flange...

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Abstract

The invention belongs to the field of safety production, and particularly relates to a fire extinguishing system of a hydrogen pipeline flange joint. The fire extinguishing system comprises a nitrogeninjection device used for injecting nitrogen to the flange joint in the radial direction of the flange, a fire foam injection device used for injecting fire foam to the flange joint in the radial direction of the flange, a temperature monitoring device used for monitoring the temperature above the flange joint, and a control device used for controlling the nitrogen injection device and / or the fire foam injection device to start when the monitored temperature detected by the temperature monitoring device is greater than a preset value. The fire extinguishing system can monitor and automatically extinguish a hydrogen leakage fire at flange joint in real time. A double-extinguishing agent (nitrogen and fire foam) is matched with the system to use, so that double-protection is provide for fire extinguishing, and the success rate of fire extinguishing is improved.

Description

technical field [0001] The invention belongs to the field of safe production, and in particular relates to a fire extinguishing system for a hydrogen pipeline flange joint. Background technique [0002] The transportation of hydrogen in the refinery unit is limited by the physical properties of hydrogen (critical temperature -234.8°C, critical pressure 1664.8kPa), and large-scale use can only be carried out by pipeline. Because the reaction conditions required by the hydrogenation reaction are generally high, ordinary pipelines cannot withstand the high pressure state, so the current hydrogen pipelines in the refinery are mostly made of metal, and due to the requirements of the production process, welding valves cannot be used at the joints of the pipelines, so only The form of valve and flange connection is adopted, which leads to irregular installation or long-term use, and hydrogen leakage is very easy to occur at the flange connection. [0003] After the hydrogen gas le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C37/38A62C31/00A62C31/12
CPCA62C31/00A62C31/12A62C37/38
Inventor 吕帅栾波
Owner 山东京博众诚清洁能源有限公司
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