CN104295896B - A kind of cryogenic liquid urgent blocking method of groove tank car - Google Patents
A kind of cryogenic liquid urgent blocking method of groove tank car Download PDFInfo
- Publication number
- CN104295896B CN104295896B CN201310296160.0A CN201310296160A CN104295896B CN 104295896 B CN104295896 B CN 104295896B CN 201310296160 A CN201310296160 A CN 201310296160A CN 104295896 B CN104295896 B CN 104295896B
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- Prior art keywords
- glue injection
- injecting
- gun head
- polydimethylsiloxane
- injection gun
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Abstract
The invention belongs to on-the-spot fast blockage technical field, particularly relate to a kind of cryogenic liquid urgent blocking method of groove tank car, glue injection gun head be connected with the front end of colloid-injecting gun, colloid-injecting gun rear end connects the devices such as conventional air pump or hydraulic pump；By injected rubber hose, polydimethylsiloxane sealing agent is injected leakage point；Stop when discharging polydimethylsiloxane from air discharge duct injecting polydimethylsiloxane sealing agent；Glue injection gun head being unloaded from injecting glue gun body, make glue injection gun head stay on leak, leak stopping completes.Glue injection gun head in Process of Leaking Stoppage, including injected rubber hose, heat-insulation layer, snap joint, air discharge duct.The invention have the benefit that the leak being capable of having bend pipe etc. random geometry blocks；Need not hole on tank body, also tank body will not be caused permanent damage, it is simple to the reparation of tank body；Cryogenic liquid can be carried out leak stopping.
Description
Technical field
The invention belongs to on-the-spot fast blockage technical field, particularly relate to a kind of urgent leak stopping side of cryogenic liquid groove tank car
Method.
Background technology
Low temperature tanker is the vehicle for shipping cryogenic liquid.Cryogenic liquid include liquefied natural gas (-162 DEG C) and
Liquid oxygen (-183 DEG C) etc..The tank car of shipment liquefied natural gas and liquid oxygen once occurs leakage to be extremely to endanger in transport process
Danger, be badly in need of a kind of can the method for quick effectively leak stopping in the scene of the accident.Prior art mainly includes magnetic blocking technology and machine
Tool power leakage stopping technology two kinds, the shortcoming of these device for plugging is that the geometry of device for plugging must be with the geometry of leakage point
Match, owing to the geometry of leakage point is varied, particularly there is the leakage point of random geometry, in certain journey
The application of this kind of device for plugging is limited on degree.
In United States Patent (USP) US2817218, Sterling Beckwith invented a kind of application paraffin to groove in 1954
Car carries out the method for leak stopping.After leakage point position determines, tank car tank body bores an aperture, leak stopping liquid pressing is injected
In inner pressurd vessel.Room temperature paraffin is injected in inner pressurd vessel by aperture pressurization, and at sufficient pressure, paraffin is with liquid even solid-state
It is pressed into leakage point, spreads near leakage position in inner pressurd vessel, form permanent stopper after condensation and leakage point is blocked up
Leakage.After contacting with cryogenic liquid, low temperature may insure that paraffin keeps solid-state to block leakage point.Although can be to irregular geometry
The leakage point of shape carries out effective leak stopping, but first this method has the disadvantage in that, paraffin is exactly solid-state at normal temperatures, institute
To use paraffin as low temperature sealing agent, the poor fluidity of paraffin, it is necessary to paraffin could be pressed into by the biggest pressure.Next, by
Limit, so the capillary leak of thermal insulating liner can only be carried out leak stopping, it is impossible to right as the performance of low temperature sealing agent in paraffin
Gross leak hole carries out leak stopping.Again, this method requires to bore an aperture on tank car tank body, if producing fire in boring procedure
Flower, this is extremely dangerous when liquefied natural gas occurs leakage.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of cryogenic liquid urgent blocking method of groove tank car, its feature
It is to include following process:
Glue injection gun head being connected with the front end of colloid-injecting gun, colloid-injecting gun rear end connects the devices such as conventional air pump or hydraulic pump；
By injecting glue gun barrel, polydimethylsiloxane sealing agent is injected leakage point, inject during polydimethylsiloxane used
Pressure more than tank interior pressure；
Stop when discharging polydimethylsiloxane from air discharge duct injecting polydimethylsiloxane sealing agent；
Glue injection gun head is unloaded from colloid-injecting gun, makes glue injection gun head stay on leak, play the effect of sealing-plug, now
Leak stopping completes.
Glue injection gun head during a kind of above-mentioned blocking method, it is characterised in that include injecting glue gun barrel, heat-insulation layer, quickly
Joint, air discharge duct, described injecting glue gun barrel one end is connected with described snap joint, and described injecting glue gun barrel outsourcing has described heat-insulation layer,
Described air discharge duct is had on described heat-insulation layer.
Described air discharge duct is arranged on the surface of described heat-insulation layer.
Described injecting glue gun barrel is the tubule being made of metal.
Described heat-insulation layer is made by being incubated and have certain elastic material.
The material of described heat-insulation layer is cold resistant rubber.
The invention have the benefit that use polydimethylsiloxane (i.e. silicone oil) is sealing agent, polydimethylsiloxane
After flowing diffusion, it is full of leakage hole inside circumference, is formed after contacting with cryogenic liquid and there is some strength and elastic solid,
And then play the purpose of plug leak mouth, have an advantage in that: 1, the polydimethylsiloxane after solidification and the paraffin phase under low temperature
Ratio has certain elasticity, can block cryogenic liquid leakage reliably, so polydimethylsiloxane is more preferable than paraffin
Low temperature sealing agent；2, good fluidity.The fusing point of polydimethylsiloxane is lower about 110 DEG C than paraffin, and at normal temperatures, paraffin is
Solid and polydimethylsiloxane is liquid, the mobility of polydimethylsiloxane is substantially better than paraffin, the requirement to colloid-injecting gun
Low, required injection pressure is the least, and the most under cryogenic, polydimethylsiloxane has more preferable mobility, can be deeply
Block inside cryogenic liquid tank lorry leak, flow in the leak of any shape, spread, not by leak shape
Impact such that it is able to the leak realizing having bend pipe etc. random geometry blocks；3, tasteless, nontoxic, without rotten
Erosion property, do not fire, pressue device is required low, harmless to environment and personnel, and low price；4, polydimethylsiloxane has good
Good thermal insulation, is not only able to prevent leaking of cryogenic liquid, moreover it is possible to stops cryogenic liquid to heat up and gasifies；5, at cryogenic liquid quilt
After removing tank body, polydimethylsiloxane reverts to oily liquids again, tank body will not be caused permanent damage, it is not required that
Tank body is holed, it is simple to the reparation of tank body；6, Process of Leaking Stoppage uses special glue injection gun head, simple to operate, and due to
Need not boring, it is possible to realize fast blockage, in case of emergency plugging time is short, reduces cryogenic liquid leakage and causes
Harm；7, Process of Leaking Stoppage good airproof performance, prevents leakage, due to the setting of air discharge duct, can easily judge leak whether by
Polydimethylsiloxane fills up, and the heat-insulation layer that injecting glue gun barrel outsourcing has has heat insulating ability and has certain elasticity, and heat insulating ability makes
Polydimethylsiloxane will become solid to block injecting glue gun barrel by premature condensation in injecting glue gun barrel, has certain elastic material and makes
Obtain glue injection gun head and can be pressed into leak, prevent polydimethylsiloxane from outflowing, do not produce spark simultaneously.The present invention can be to liquefaction
The cryogenic liquids such as natural gas (-162 DEG C) and liquid oxygen (-183 DEG C) carry out leak stopping, and are only used for low-temperature atmosphere-pressure (atmospheric pressure)
The leak stopping of tank body, it is impossible to for the leak stopping of normal temperature high voltage tank body.
Accompanying drawing explanation
Fig. 1 is the structural representation of glue injection gun head of the present invention；
Fig. 2 is the side view of glue injection gun head of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further explained explanation.
In figure, 1. air discharge duct, 2. injecting glue gun barrel, 3. heat-insulation layer, 4. snap joint.
As shown in Figure 1 and Figure 2, polydimethylsiloxane is utilized to carry out the concrete of the cryogenic liquid urgent blocking method of groove tank car
Process is: glue injection gun head be connected with the front end of colloid-injecting gun, and colloid-injecting gun rear end connects the devices such as conventional air pump or hydraulic pump；Logical
Crossing injecting glue gun barrel 2 and polydimethylsiloxane sealing agent is injected leakage point, when injecting polydimethylsiloxane, pressure used should compare
Tank interior pressure is big；Stop when discharging polydimethylsiloxane from air discharge duct 1 injecting polydimethylsiloxane sealing agent；
Now explanation leak is filled up by polydimethylsiloxane, glue injection gun head is unloaded from colloid-injecting gun, makes glue injection gun head stay
On leak, playing the effect of sealing-plug, now leak stopping completes.
The glue injection gun head of the above-mentioned cryogenic liquid urgent leak stopping of groove tank car, including air discharge duct 1, injecting glue gun barrel 2, heat-insulation layer 3,
Snap joint 4, injecting glue gun barrel 2 one end is connected with snap joint 4, is surrounded by heat-insulation layer 3, the row of having on heat-insulation layer 3 outside injecting glue gun barrel 2
Air drain 1, air discharge duct 1 is arranged on the surface of heat-insulation layer 3, and injecting glue gun barrel 2 is the tubule being made of metal, and heat-insulation layer 3 is by being incubated
And there is certain elastic material make.The material of heat-insulation layer 3 specifically can use cold resistant rubber.
It is real that the present invention uses above method and glue injection gun head that the container equipped with liquid nitrogen (-196 DEG C) is simulated leak stopping
Testing, experiment uses the heat-insulation layer that elastomeric material makes, and when injecting polydimethylsiloxane, pressure ratio tank interior pressure used is big,
And air discharge duct is arranged on the surface of heat-insulation layer, experiment proves that polydimethylsiloxane solidifies after meeting with liquid nitrogen in leak
Become white solid, liquid nitrogen leakage reliably can be blocked.
The present invention is only used for the leak stopping of low-temperature atmosphere-pressure (atmospheric pressure) tank body, it is impossible to blocking up for normal temperature high voltage tank body
Leakage.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example, it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng, within all should still belonging to the patent covering scope of the present invention.
Claims (6)
1. the cryogenic liquid urgent blocking method of groove tank car, it is characterised in that include following process:
Glue injection gun head being connected with the front end of colloid-injecting gun, colloid-injecting gun rear end connects conventional air pump or hydraulic pump；
By injected rubber hose (2), polydimethylsiloxane sealing agent is injected leakage point；
Stop when discharging polydimethylsiloxane from air discharge duct (1) injecting polydimethylsiloxane sealing agent；
With snap joint (4), glue injection gun head is unloaded from colloid-injecting gun, make glue injection gun head stay on leak, play sealing-plug
Effect, now leak stopping completes.
The cryogenic liquid urgent blocking method of groove tank car the most according to claim 1, it is characterised in that inject poly dimethyl silicon
Pressure used during oxygen alkane is more than the internal pressure of tank body.
The glue injection gun head used in the cryogenic liquid urgent blocking method of groove tank car the most according to claim 1, its feature exists
In including injected rubber hose (2), heat-insulation layer (3), snap joint (4), air discharge duct (1), described injected rubber hose (2) one end quickly connects with described
Head (4) connects, and described injected rubber hose (2) outsourcing has described heat-insulation layer (3), described heat-insulation layer (3) has described air discharge duct (1).
Glue injection gun head the most according to claim 3, it is characterised in that described air discharge duct (1) is arranged on described heat-insulation layer (3)
Surface.
Glue injection gun head the most according to claim 3, it is characterised in that described injected rubber hose (2) is the tubule being made of metal.
Glue injection gun head the most according to claim 3, it is characterised in that described heat-insulation layer (3) is by being incubated and having resilient material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296160.0A CN104295896B (en) | 2013-07-16 | 2013-07-16 | A kind of cryogenic liquid urgent blocking method of groove tank car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296160.0A CN104295896B (en) | 2013-07-16 | 2013-07-16 | A kind of cryogenic liquid urgent blocking method of groove tank car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104295896A CN104295896A (en) | 2015-01-21 |
| CN104295896B true CN104295896B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310296160.0A Expired - Fee Related CN104295896B (en) | 2013-07-16 | 2013-07-16 | A kind of cryogenic liquid urgent blocking method of groove tank car |
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| CN (1) | CN104295896B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985386B (en) * | 2015-07-09 | 2017-07-21 | 安徽淮化股份有限公司 | A kind of leakage craft leakage mending method of gas reservoir |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927787A (en) * | 1973-06-22 | 1975-12-23 | Mitsubishi Heavy Ind Ltd | Hatch construction in a low temperature liquid tank |
| CN2443785Y (en) * | 2000-11-08 | 2001-08-22 | 居焕兴 | High pressure leaking stoppage glue injecting gun |
| CN1311410A (en) * | 2000-11-08 | 2001-09-05 | 居焕兴 | Belt type leaking stopper |
| CN2734346Y (en) * | 2004-09-02 | 2005-10-19 | 中国科学院西安光学精密机械研究所 | Glue injecting device |
| CN201100507Y (en) * | 2007-11-19 | 2008-08-13 | 桐昆集团浙江恒盛化纤有限公司 | A novel steam three-pass leakage blocking industrial device |
| CN101260287A (en) * | 2008-04-18 | 2008-09-10 | 大连三达奥克化学股份有限公司 | Vehicle-carrying air-conditioning refrigerating system plugging agent |
| CN201351790Y (en) * | 2009-02-26 | 2009-11-25 | 北京管通科技开发有限责任公司 | Detachable glue injecting nozzle |
| CN201720169U (en) * | 2010-07-09 | 2011-01-26 | 上海海鹰粘接科技有限公司 | Injection type leaking stoppage device with pressure |
| CN203628267U (en) * | 2013-07-16 | 2014-06-04 | 中国人民武装警察部队学院 | Glue injecting gun head |
-
2013
- 2013-07-16 CN CN201310296160.0A patent/CN104295896B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927787A (en) * | 1973-06-22 | 1975-12-23 | Mitsubishi Heavy Ind Ltd | Hatch construction in a low temperature liquid tank |
| CN2443785Y (en) * | 2000-11-08 | 2001-08-22 | 居焕兴 | High pressure leaking stoppage glue injecting gun |
| CN1311410A (en) * | 2000-11-08 | 2001-09-05 | 居焕兴 | Belt type leaking stopper |
| CN2734346Y (en) * | 2004-09-02 | 2005-10-19 | 中国科学院西安光学精密机械研究所 | Glue injecting device |
| CN201100507Y (en) * | 2007-11-19 | 2008-08-13 | 桐昆集团浙江恒盛化纤有限公司 | A novel steam three-pass leakage blocking industrial device |
| CN101260287A (en) * | 2008-04-18 | 2008-09-10 | 大连三达奥克化学股份有限公司 | Vehicle-carrying air-conditioning refrigerating system plugging agent |
| CN201351790Y (en) * | 2009-02-26 | 2009-11-25 | 北京管通科技开发有限责任公司 | Detachable glue injecting nozzle |
| CN201720169U (en) * | 2010-07-09 | 2011-01-26 | 上海海鹰粘接科技有限公司 | Injection type leaking stoppage device with pressure |
| CN203628267U (en) * | 2013-07-16 | 2014-06-04 | 中国人民武装警察部队学院 | Glue injecting gun head |
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| Publication number | Publication date |
|---|---|
| CN104295896A (en) | 2015-01-21 |
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