CN205938242U - Double -wall pipe inner tube is to removable outer tube of interface welding seam department - Google Patents
Double -wall pipe inner tube is to removable outer tube of interface welding seam department Download PDFInfo
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- CN205938242U CN205938242U CN201620872305.6U CN201620872305U CN205938242U CN 205938242 U CN205938242 U CN 205938242U CN 201620872305 U CN201620872305 U CN 201620872305U CN 205938242 U CN205938242 U CN 205938242U
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- outer tube
- tube
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- inner tube
- removable outer
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Abstract
The utility model discloses a double -wall pipe inner tube is to removable outer tube of interface welding seam department, including inner tube, outer tube, outer pipe flange, removable outer tube, there is inner tube butt weld between the inner tube, outer pipe box in interior outside of tubes, removable outer tube is by two half round tube composition of removable outer tube to through sealed filling up, outside the fastener is fixed in the outer tube, is provided with on the removable outer tube and observes the hole, outer pipe flange sets up in removable outer tube both sides, removable outer tube and outer pipe flange through sealedly fill up, the fastener is fixed, removable outer tube is managed or the return bend for straight type, the utility model discloses dismantling the outer tube, repairing the inner tube to the interface welding seam, recover the in -process of outer tube again, can not produce in granule such as welding slag gets into the cavity that inner tube and outer tube formed, also do not having the circumstances of on -the -spot cutting to the outer tube, also need not to make again the outer tube, only need with the outer tube of pulling down reinstallate restore to the throne can, work is simple, reliable, convenient.
Description
Technical field
The utility model is the pipeline conveying LNG fuel with regard to LNG fuels and energy ship, more specifically, is with regard to LNG combustion
A kind of removable outer tube of the double-wall pipe inner tube docking port commissure of material Power Vessel.
Background technology
Liquefied natural gas（Abbreviation LNG）It is a kind of compressible, inflammable liquid, there is colorless and odorless, nontoxic, non-corrosiveness
Feature.LNG, as a kind of environmental protection, economy, safe novel energy, can effectively reduce the discharge of NOX, SOX, have very
Significantly environmental benefit.
At present in the ship built, greatly all adopt double fuel power, and the confession for conveying LNG fuel in cabin
Air pipe, is required to be designed to double-walled form of tubes, i.e. inner and outer tubes.Inner tube Main Function is conveying LNG fuel, and outer tube is main
Function as second layer protection and whether detection inner tube leaks.The conventional design of double-wall pipe, has two kinds of patterns, one be inner tube and
It is full of the inert gas that pressure is higher than gas pressure in inner tube between outer tube（Malleation nitrogen charging）Once, detect inert gas pressure
Reduce, report to the police immediately；Two is equipped with drawing-in type blower fan between inner and outer tubes, and fan outlet is arranged in outdoor safety region, and
Blower fan has the ventilation ability being not less than 30 times per hour, once finding that at fan inlet, blast uprises, reports to the police immediately.
The double-wall pipe of conveying LNG fuel, once revealing, will produce the larger fuel gas of harmfulness in machinery space.Therefore it is double
The weldquality of wall pipe inner tube is most important.Once gas leakage warning, weld seam leakage to inner tube carries out reparation to be become
Top priority.
Convey the double-wall pipe of LNG fuel at present, inner tube adopts butt welding, and all weld seams 100% are detected a flaw；Outer tube type of attachment
Do not limit, but adopt Type of Welding as far as possible, reduce leak source；Inner tube is fixed with outer tube by elasticity or fixed support.In order to just
Welding at the docking ports such as the straight length of inner tube, elbow and correlation are applied for checking and examination work, and outer tube is typically made outside butt welding Half formula
Pipe（As Fig. 1）Or bushing type outer tube（As Fig. 2）Or docking welding of elbow outer tube（As Fig. 3）.Once inner tube gas is detected on ship
Leakage, wants to repair inner tube docking port weld seam, can only be by cutting outer tube.But so can bring about following difficulty：Cutting outer tube
During once there being welding slag to enter in the cavity that inner tube and outer tube are formed, because other positions are all welded to connect, scarfing cinder works
Extremely difficult；After inner tube weld seam is repaired, originally remove outer tube and cannot reuse, need again to do a set of Half formula straight tube
Outer tube or Half formula sleeve pipe outer tube or Half formula elbow outer tube, the repair amount of therefore outer tube is very big.
Utility model content
The purpose of this utility model is to provide a kind of removable outer tube of double-wall pipe inner tube docking port commissure.
The technical solution adopted in the utility model is：
A kind of removable outer tube of double-wall pipe inner tube docking port commissure, including inner tube, outer tube, outer pipe flange, removable
Outer tube, has inner tube butt weld between said inner tube, described outer tube is placed on outside inner tube, and described removable outer tube is removable by two
Outer tube semi-circular tube forms, and is fixed on outside outer tube by sealing gasket, securing member, and described removable outer tube is provided with peep hole,
Described outer pipe flange is arranged at removable outer tube both sides, and described removable outer tube and outer pipe flange are solid by sealing gasket, securing member
Fixed.
Described removable outer tube is straight type pipe or bend pipe.
Advantage of the present utility model：Dismantling outer tube, the process repaired inner tube docking port weld seam, again recover outer tube again
In, the particles such as welding slag will not be produced and enter in the cavity that inner tube is formed with outer tube, also there is not the situation of on-site cutting to outer tube,
Reset it is only necessary to reinstall the outer tube pulled down without remaking outer tube, work is simple, reliability, facility.
Brief description
With reference to the accompanying drawings and detailed description the utility model is described in further detail.
Fig. 1 is the non-disconnectable formula of outer tube-butt welding Half formula outer tube schematic diagram；
Fig. 2 is the non-disconnectable formula of outer tube-bushing type outer tube schematic diagram；
Fig. 3 is the non-disconnectable formula of outer tube-docking welding of elbow outer tube schematic diagram；
Fig. 4 be the utility model outer tube removable-straight length removable outer tube schematic diagram；
Fig. 5 be the utility model outer tube removable-straight length removable outer tube side view；
Fig. 6 be the utility model outer tube removable-elbow pipeline section removable outer tube schematic diagram；
Fig. 7 be the utility model outer tube removable-schematic diagram of straight length removable outer tube semi-circular tube.
Wherein：1st, outer tube；1.1st, outer tube straight tube；2nd, inner tube；2.1st, inner pipe straight；2.2nd, interior pipe bend；3rd, outer pipe flange；
4th, removable outer tube；4.1st, Half formula outer tube；4.2nd, sleeve pipe；4.3rd, outer pipe bend；4.4th, the removable outer tube of elbow pipeline section；5th, interior
Pipe butt weld；6th, peep hole；7th, sealing gasket；8th, securing member；9th, Half formula outer tube butt weld；9.1st, outer tube butt weld；
10th, removable outer tube semi-circular tube.
Specific embodiment
As shown in figs. 4-7, a kind of removable outer tube of double-wall pipe inner tube docking port commissure, including inner tube 2, outer tube 1, outer
Pipe flange 3, removable outer tube 4, have inner tube butt weld 5 between inner tube 2, outer tube 1 is placed on outside inner tube 2, and removable outer tube 4 is by two
Individual removable outer tube semi-circular tube 10 forms, and is fixed on outside outer tube 1 by sealing gasket 7, securing member 8, and removable outer tube 4 is arranged
There is peep hole 6, outer pipe flange 3 is arranged at removable outer tube 4 both sides, removable outer tube 4 and outer pipe flange 3 pass through sealing gasket 7, tight
Firmware 8 is fixing, and removable outer tube 4 is straight type pipe or bend pipe.
The utility model, during dismantling outer tube, reparation inner tube docking port weld seam, again recovering outer tube again, will not produce
The particles such as raw welding slag enter in the cavity that inner tube is formed with outer tube, also there is not the situation of on-site cutting to outer tube, without weight
New production outer tube resets it is only necessary to reinstall the outer tube pulled down, and work is simple, reliability, facility.
Claims (2)
1. a kind of removable outer tube of double-wall pipe inner tube docking port commissure it is characterised in that：Including inner tube, outer tube, outer tube method
Blue, removable outer tube, has inner tube butt weld between said inner tube, described outer tube is placed on outside inner tube, described removable outer tube by
Two removable outer tube semi-circular tube compositions, and be fixed on outside outer tube by sealing gasket, securing member, described removable outer tube is arranged
Have peep hole, described outer pipe flange is arranged at removable outer tube both sides, described removable outer tube and outer pipe flange pass through sealing gasket,
Securing member is fixed.
2. a kind of double-wall pipe inner tube docking port commissure according to claim 1 removable outer tube it is characterised in that：Institute
Stating removable outer tube is straight type pipe or bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620872305.6U CN205938242U (en) | 2016-08-12 | 2016-08-12 | Double -wall pipe inner tube is to removable outer tube of interface welding seam department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620872305.6U CN205938242U (en) | 2016-08-12 | 2016-08-12 | Double -wall pipe inner tube is to removable outer tube of interface welding seam department |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205938242U true CN205938242U (en) | 2017-02-08 |
Family
ID=57920894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620872305.6U Active CN205938242U (en) | 2016-08-12 | 2016-08-12 | Double -wall pipe inner tube is to removable outer tube of interface welding seam department |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205938242U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747655A (en) * | 2017-11-06 | 2018-03-02 | 惠生（南通）重工有限公司 | A kind of double-deck supply tube-connecting part of generator for LNG surface units |
| CN108412735A (en) * | 2018-04-25 | 2018-08-17 | 张家港富瑞深冷科技有限公司 | A kind of adiabatic pump shell structure for low temperature immersed pump |
| CN108644517A (en) * | 2018-08-06 | 2018-10-12 | 天津长瑞大通流体控制系统有限公司 | The flange seal nested structure and encapsulating method of highly pressurised liquid baffle type pipe connections |
| CN111779987A (en) * | 2020-06-28 | 2020-10-16 | 潍坊新力蒙水产技术有限公司 | Liquid injection type display conveying pipe |
| CN111794879A (en) * | 2020-06-28 | 2020-10-20 | 潍坊新力蒙水产技术有限公司 | High-pressure gas fuel vacuum sectional air inlet pipe |
-
2016
- 2016-08-12 CN CN201620872305.6U patent/CN205938242U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747655A (en) * | 2017-11-06 | 2018-03-02 | 惠生（南通）重工有限公司 | A kind of double-deck supply tube-connecting part of generator for LNG surface units |
| CN108412735A (en) * | 2018-04-25 | 2018-08-17 | 张家港富瑞深冷科技有限公司 | A kind of adiabatic pump shell structure for low temperature immersed pump |
| CN108644517A (en) * | 2018-08-06 | 2018-10-12 | 天津长瑞大通流体控制系统有限公司 | The flange seal nested structure and encapsulating method of highly pressurised liquid baffle type pipe connections |
| CN111779987A (en) * | 2020-06-28 | 2020-10-16 | 潍坊新力蒙水产技术有限公司 | Liquid injection type display conveying pipe |
| CN111794879A (en) * | 2020-06-28 | 2020-10-20 | 潍坊新力蒙水产技术有限公司 | High-pressure gas fuel vacuum sectional air inlet pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |