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A fire extinguishing system at the flange connection of a hydrogen pipeline

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, hydrogen leakage at flange joints, and untimely fire extinguishing, and achieve the effect of improving the success rate

Active Publication Date: 2021-12-10
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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  • A fire extinguishing system at the flange connection of a hydrogen pipeline

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Effect test

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 in particular relates to a fire extinguishing system at a flange connection of a hydrogen pipeline. The system comprises: a nitrogen injection device for injecting nitrogen to the flange connection along the radial direction of the flange; Fire-fighting foam spraying device for spraying fire-fighting foam to flange joint; temperature monitoring device for monitoring temperature above flange joint; and control device for monitoring temperature of said temperature monitoring device>preset Control the nitrogen injection device and / or the fire-fighting foam injection device to open if the value is set. The system provided by the invention can monitor and automatically extinguish the hydrogen leakage and fire at the flange connection in real time, and the system is matched with dual extinguishing agents (nitrogen, fire-fighting foam), which can provide double protection for extinguishing and improve the success rate of extinguishing.

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 Patents(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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