CN104295896A - An emergency leakage stoppage method for a low temperature liquid tank truck - Google Patents
An emergency leakage stoppage method for a low temperature liquid tank truck Download PDFInfo
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- CN104295896A CN104295896A CN201310296160.0A CN201310296160A CN104295896A CN 104295896 A CN104295896 A CN 104295896A CN 201310296160 A CN201310296160 A CN 201310296160A CN 104295896 A CN104295896 A CN 104295896A
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- glue injection
- injection gun
- gun head
- leakage stoppage
- silicone polymer
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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.
Description
Technical field
The invention belongs to on-the-spot instantaneous leaking-stopping technical field, particularly relate to the urgent blocking method of a kind of cryogenic liquide groove tank car.
Background technique
Low temperature tanker is the vehicle for loading and transporting cryogenic liquide.Cryogenic liquide comprises LNG Liquefied natural gas (-162 DEG C) and liquid oxygen (-183 DEG C) etc.Shipment LNG Liquefied natural gas and the tank car of liquid oxygen in transport process once it is very dangerous for occurring to leak, be badly in need of a kind of can the method for effectively leak stopping fast in scene of the accident.Prior art mainly comprises magnetic blocking technology and mechanical force leakage stopping technology two kinds, the shortcoming of these leakage-baffling device is that the geometrical shape of leakage-baffling device must match with the geometrical shape of leakage point, because the geometrical shape of leakage point is varied, particularly there is the leakage point of random geometry, limit the application of this kind of leakage-baffling device to a certain extent.
In US Patent No. 2817218, Sterling Beckwith invented in 1954 and a kind ofly applies paraffin carries out leak stopping method to tank car.After leakage point position is determined, tank car tank body bores an aperture, leak stopping liquid pressing is injected inner container.Normal temperature paraffin injects inner container by aperture pressurization, and at sufficient pressure, paraffin is pressed into leakage point so that liquid state is even solid-state, spreads in inner container near leakage position, forms permanent stopper and carry out leak stopping to leakage point after condensation.After contacting with cryogenic liquide, low temperature can guarantee that paraffin keeps solid-state to block leakage point.Although effective leak stopping can be carried out to the leakage point of random geometry, but this method exists following shortcoming: first, paraffin is exactly solid-state at normal temperatures, so adopt paraffin as low temperature blocking agent, the poor fluidity of paraffin, must could be pressed into paraffin by very large pressure.Secondly, because the performance of paraffin as low temperature blocking agent limits, so leak stopping can only be carried out to the capillary leak of thermal insulating liner, leak stopping can not be carried out to gross leak hole.Again, this method requires to bore an aperture on tank car tank body, if produce spark in boring procedure, this occurs when leaking in LNG Liquefied natural gas is very dangerous.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the urgent blocking method of a kind of cryogenic liquide groove tank car, it is characterized in that comprising following process:
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 oil hydraulic pump;
By injecting glue gun barrel, dimethyl silicone polymer blocking agent is injected leakage point, during injection dimethyl silicone polymer, pressure used is greater than tank interior pressure;
Stop when discharging dimethyl silicone polymer from air vent injecting dimethyl silicone polymer blocking agent;
Glue injection gun head unloaded from colloid-injecting gun, make glue injection gun head stay on Leak hole, play the effect of sealing plug, now leak stopping completes.
Glue injection gun head in a kind of above-mentioned blocking method process, it is characterized in that comprising injecting glue gun barrel, thermal insulation layer, rapid pipe joint, air vent, described injecting glue gun barrel one end is connected with described rapid pipe joint, and the outsourcing of described injecting glue gun barrel has described thermal insulation layer, and described thermal insulation layer has described air vent.
Described air vent is arranged on directly over described thermal insulation layer.
Described injecting glue gun barrel is the tubule be made of metal.
Described thermal insulation layer is made by being incubated and having certain flexible material.
The material of described thermal insulation layer is cold resistant rubber.
Beneficial effect of the present invention is: use dimethyl silicone polymer (i.e. silicone oil) to be blocking agent, dimethyl silicone polymer is full of leakage hole inside circumference after diffuses flow, formed after contacting with cryogenic liquide and there is some strength and flexible solid, and then play the object of shutoff leakage hole, its advantage is: the dimethyl silicone polymer after 1, solidifying has certain elasticity with the paraffin phase ratio under low temperature, reliable shutoff can be carried out, so dimethyl silicone polymer is low temperature blocking agent more better than paraffin to cryogenic liquid leakage; 2, good fluidity.The fusing point of dimethyl silicone polymer is lower than paraffin about 110 DEG C, at normal temperatures, paraffin is solid and dimethyl silicone polymer is liquid, the mobility of dimethyl silicone polymer is obviously better than paraffin, low to the requirement of colloid-injecting gun, required injection pressure is also little, particularly under cryogenic, dimethyl silicone polymer has better mobility, cryogenic liquid tank lorry Leak hole inside can be goed deep into and carry out shutoff, flow in the Leak hole of any shape, diffusion, not by the impact of Leak hole shape, thus the Leak hole that can realize having bend pipe etc. random geometry carries out shutoff, 3, tasteless, nontoxic, non-corrosiveness, do not fire, require low to pressurization device, to environment and personnel harmless, and low price, 4, dimethyl silicone polymer has good adiabaticity, not only can prevent leaking of cryogenic liquide, cryogenic liquide can also be stoped to heat up and gasify, 5, after cryogenic liquide is removed tank body, dimethyl silicone polymer reverts to oily liquids again, can not cause permanent damage to tank body, does not also need to hole on tank body, is convenient to the reparation of tank body, 6, Process of Leaking Stoppage uses special glue injection gun head, simple to operate, and owing to not needing boring, so can realize instantaneous leaking-stopping, in case of emergency plugging time is short, reduces the harm that cryogenic liquid leakage causes, 7, Process of Leaking Stoppage good airproof performance, Leakage prevention, due to the setting of air vent, easily can judge whether Leak hole is filled up by dimethyl silicone polymer, the thermal insulation layer that the outsourcing of injecting glue gun barrel has has heat insulating ability and has certain elasticity, and heat insulating ability makes dimethyl silicone polymer will solid be become to block injecting glue gun barrel by premature condensation in injecting glue gun barrel, has certain flexible material and makes glue injection gun head to be pressed into Leak hole, prevent dimethyl silicone polymer from outflowing, do not produce spark simultaneously.The present invention can carry out leak stopping to cryogenic liquides such as LNG Liquefied natural gas (-162 DEG C) and liquid oxygen (-183 DEG C), and can only be used for the leak stopping of low-temperature atmosphere-pressure (barometric pressure) tank body, can not be used 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.
Embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the present invention.
In figure, 1. air vent, 2. injecting glue gun barrel, 3. thermal insulation layer, 4. rapid pipe joint.
As shown in Figure 1 and Figure 2, the detailed process utilizing dimethyl silicone polymer to carry out the urgent blocking method of cryogenic liquide groove tank car 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 oil hydraulic pump; By injecting glue gun barrel 2, dimethyl silicone polymer blocking agent is injected leakage point, during injection dimethyl silicone polymer, pressure used should be larger than tank interior pressure; Stop when discharging dimethyl silicone polymer from air vent 1 injecting dimethyl silicone polymer blocking agent; Now illustrate that Leak hole is filled up by dimethyl silicone polymer, glue injection gun head unloaded from colloid-injecting gun, make glue injection gun head stay on Leak hole, play the effect of sealing plug, now leak stopping completes.
The glue injection gun head of the urgent leak stopping of above-mentioned cryogenic liquide groove tank car, comprise air vent 1, injecting glue gun barrel 2, thermal insulation layer 3, rapid pipe joint 4, injecting glue gun barrel 2 one end is connected with rapid pipe joint 4, thermal insulation layer 3 is surrounded by outside injecting glue gun barrel 2, thermal insulation layer 3 has air vent 1, air vent 1 is arranged on directly over thermal insulation layer 3, and injecting glue gun barrel 2 is the tubules be made of metal, and thermal insulation layer 3 is made by being incubated and having certain flexible material.The material of thermal insulation layer 3 specifically can adopt cold resistant rubber.
The present invention adopts above method and glue injection gun head to carry out simulated leaking stoppage experiment to the container that liquid nitrogen (-196 DEG C) is housed, the thermal insulation layer that experiment uses rubber material to make, during injection dimethyl silicone polymer, pressure ratio tank interior pressure used is large, and air vent is arranged on directly over thermal insulation layer, experiment proves that the dimethyl silicone polymer after coagulation that meets with liquid nitrogen in Leak hole becomes white solid, can leak carry out reliable shutoff to liquid nitrogen.
The present invention can only be used for the leak stopping of low-temperature atmosphere-pressure (barometric pressure) tank body, can not be used for the leak stopping of normal temperature high voltage tank body.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (9)
1. the urgent blocking method of cryogenic liquide groove tank car, is characterized in that comprising following process:
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 oil hydraulic pump;
By injected rubber hose (2), dimethyl silicone polymer blocking agent is injected leakage point;
Stop injecting dimethyl silicone polymer blocking agent when discharging dimethyl silicone polymer from air vent (1);
Glue injection gun head unloaded from colloid-injecting gun with rapid pipe joint (4), make glue injection gun head stay on Leak hole, play the effect of sealing plug, now leak stopping completes.
2. the urgent blocking method of cryogenic liquide groove tank car according to claim 1, when it is characterized in that injecting dimethyl silicone polymer, pressure used is greater than the internal pressure of tank body.
3. the glue injection gun head used in an above-mentioned urgent blocking method, it is characterized in that comprising injected rubber hose (2), insulation cushion (3), rapid pipe joint (4), air vent (1), described injected rubber hose (2) one end is connected with described rapid pipe joint (4), described injected rubber hose (2) outsourcing has described insulation cushion (3), and described insulation cushion (3) has described air vent (1).
4. glue injection gun head according to claim 3, is characterized in that described air vent (1) is arranged on directly over described insulation cushion (3).
5. glue injection gun head according to claim 3, is characterized in that described air vent (1) is square groove.
6. glue injection gun head according to claim 3, is characterized in that described injected rubber hose (2) is the tubule be made of metal.
7. glue injection gun head according to claim 3, is characterized in that described insulation cushion (3) is by be incubated and soft material is made.
8. glue injection gun head according to claim 3, is characterized in that the material of described insulation cushion (3) is the one in rubber or polystyrene or timber.
9. glue injection gun head according to claim 3, is characterized in that described rapid pipe joint (4) is syringe adapter.
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 true CN104295896A (en) | 2015-01-21 |
| CN104295896B CN104295896B (en) | 2016-12-28 |
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Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN104295896B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985386A (en) * | 2015-07-09 | 2015-10-21 | 安徽淮化股份有限公司 | Gas tank leakage repair method |
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 injection 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 injection 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985386A (en) * | 2015-07-09 | 2015-10-21 | 安徽淮化股份有限公司 | Gas tank leakage repair method |
| 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 |
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| Publication number | Publication date |
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| CN104295896B (en) | 2016-12-28 |
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Granted publication date: 20161228 Termination date: 20190716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |