An emergency plugging method for a cryogenic liquid tank car

A technology of low-temperature liquid and plugging method, which is applied in container filling method, container discharge method, gas/liquid distribution and storage, etc., and can solve problems such as poor fluidity of paraffin, impossibility of large leakage hole plugging, and danger of liquefied natural gas leakage , to achieve the effect of preventing heating and gasification, preventing leakage, and low requirements
CN104295896BInactive Publication Date: 2016-12-28CHINESE PEOPLES ARMED POLICE FORCE ACAD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE PEOPLES ARMED POLICE FORCE ACAD
Publication Date
2016-12-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of the rapid field leakage stoppage, and particularly relates to an emergency leakage stoppage method for a low temperature liquid tank truck. A glue injection gun point is connected with the front end of a glue injection gun. The rear end of the glue injection gun is connected with a device like a common air pump or a hydraulic pump. A polydimethylsiloxane leakage stoppage agent is injected into a leakage point through a glue injection pipe. When the polydimethylsiloxane is discharged from an air discharge duct, the injection of the polydimethylsiloxane leakage stoppage agent is stopped. The glue injection gun point is detached from the glue injection gun body, leaving the glue injection gun point in the leak so as to complete the leakage stoppage. The glue injection gun point used in the leakage stoppage process comprises a glue injection pipe, a thermal insulation layer, a quick connector and an air discharge duct. The method of the invention has the beneficial effects that the leakage stoppage for a leak with an irregular shape in a bent pipe can be realized; without drilling in a tank body, no permanent damage is caused to the tank body, so that it is convenient to repair the tank body; and leakage stoppage for low temperature liquid can also be realized.
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Description

technical field

[0001] The invention belongs to the technical field of on-site fast leak plugging, in particular to an emergency leak plugging method for a low-temperature liquid tank truck. Background technique

[0002] A cryogenic liquid tanker is a vehicle used to transport cryogenic liquids. Cryogenic liquids include liquefied natural gas (-162°C) and liquid oxygen (-183°C). It is very dangerous in the event of leakage in the tanker carrying liquefied natural gas and liquid oxygen during transportation, and there is an urgent need for a method that can quickly and effectively plug the leakage at the accident site. The existing technology mainly includes two kinds of magnetic plugging technology and mechanical plugging technology. The disadvantage of these plugging devices is that the geometric shape of the plugging device must match the geometric shape of the leak point, because the geometric shape of the leak point is various , especially the leakage point with irregu...

Claims

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