CN105042259A - Double-wall expansion joint and installation method - Google Patents
Double-wall expansion joint and installation method Download PDFInfo
- Publication number
- CN105042259A CN105042259A CN201510446894.1A CN201510446894A CN105042259A CN 105042259 A CN105042259 A CN 105042259A CN 201510446894 A CN201510446894 A CN 201510446894A CN 105042259 A CN105042259 A CN 105042259A
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- Prior art keywords
- flange
- adpting flange
- double
- face
- pair
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a double-wall expansion joint which comprises a corrugated pipe, a pair of connecting flanges, a flow guide pipe, a pair of inner connecting pipes, an outer sleeve pipe, a pair of double-wall pipe flanges and a plurality of O-shaped sealing rings which are respectively embedded in the outer end faces of the connecting flanges and the peripheral faces of the connecting flanges, wherein two ends of the corrugated pipe are respectively fixedly connected with the inner ends of the pair of connecting flanges through the inner connecting pipes, and the outer sleeve pipe is sleeved on the pair of connecting flanges. The double-wall pipe flange is fixedly connected with the corresponding connecting flange, and the inner hole of the outer sleeve pipe, the peripheral surface of the corrugated pipe and the inner end surfaces of the pair of connecting flanges form a double-wall expansion joint annular cavity. The method of the invention comprises the following steps: 1) the two ends of the corrugated pipe are in full-welding connection with the inner connecting pipe and the inner end of the connecting flange. 2) The outer sleeve is sleeved on a pair of connecting flanges. 3) And respectively embedding the O-shaped sealing rings into a corresponding pair of connecting flanges, and then butting the double-wall pipe flange and the connecting flanges, wherein the vent holes of the double-wall pipe flange and the connecting flanges are communicated. The invention has simple structure, easy processing, convenient operation of the installation method and avoids the danger of gas leakage.
Description
Technical field
The present invention relates to a kind of double-walled expansion joint for connecting hazardous gas conveyance conduit, especially to the double-walled expansion joint of motor delivery of fuel gas, also relating to the installation method of double-walled expansion joint, belonging to shipbuilding technical field.
Background technique
Along with the international and domestic requirement to ship energy saving reduction of discharging is more and more higher, particularly International Maritime Organization Abgasgesetz IMOTierIII implementation date is day by day approaching, the clean air power fuel being representative with LNG fuel comes into one's own day by day, and the application on boats and ships is also increasing.But generally belong to hazardous gas as the combustion gas of engine power fuel, each Classification society explicitly calls for all natural gas transport pipelines arranged in cabin to adopt double-walled construction, its inner tube is used for transport gas, outer cavity is for ventilating or being full of the inert gas of pressure higher than gas pressure in inner tube, the danger occurred to avoid natural gas leaking.But the processing more complicated of double-walled pipeline, operation is difficulty also, especially the processing of double-walled expansion joint and assembling, the mode of the outer bellows-welding of the general employing of existing double-walled expansion joint on flange, such processing method is unfavorable for the operation to internal layer bellows, operating process is loaded down with trivial details, also higher to the requirement of operator.
Summary of the invention
The object of this invention is to provide a kind of structure simple, processing fitting operation is convenient, reliability is high, the better double-walled expansion joint of versatility and installation method.
The present invention is achieved by the following technical programs:
A kind of double-walled expansion joint, comprise bellows, a pair adpting flange, honeycomb duct, a pair inner connecting tube, outer sleeve, a pair double wall pipe flange and several seal ring, described honeycomb duct is arranged in bellows; Bellows two ends are fixedly connected with a pair adpting flange the inner respectively by inner connecting tube, inner tube one end and external pipe one end are fixedly connected with double wall pipe flange one end respectively, several O-ring seals is embedded in several end face annular groove of adpting flange exterior edge face and the radial groove of adpting flange outer circumferential face respectively, outer sleeve is enclosed within a pair adpting flange, the O-ring seals in the radial groove of the respective corresponding adpting flange of outer sleeve endoporus side face two ends extruding; Double wall pipe flange is fixedly connected with corresponding adpting flange by multiple fastening screw trip bolt of radial equipartition, and double wall pipe flange exterior edge face is resisted against on adpting flange exterior edge face, and the O-ring seals in the end face annular groove of squeeze flow flange exterior edge face; Outer sleeve endoporus, bellows outer circumferential face and a pair adpting flange interior edge face form double-walled expansion joint toroidal cavity.
Object of the present invention can also be realized further by following technical measures.
Aforesaid double-walled expansion joint, wherein said adpting flange radial direction is provided with a circle adpting flange vent, and double wall pipe flange outer end is provided with the circle double wall pipe flange vent corresponding with adpting flange vent position.
Aforesaid double-walled expansion joint, wherein double wall pipe flange the inner is provided with the ventilation annular groove communicated with double wall pipe flange vent, and double-walled expansion joint toroidal cavity is communicated with the double wall pipe outer lumen between inner tube and external pipe by a circle adpting flange vent, a circle double wall pipe flange vent, ventilation annular groove successively.
Aforesaid double-walled expansion joint, the O-ring seals in two end face annular grooves of wherein adpting flange exterior edge face lays respectively at outside in radial direction that adpting flange one encloses vent.
Aforesaid double-walled expansion joint, wherein outer sleeve length A is greater than the distance B between the radial groove at a pair adpting flange two ends, and outer sleeve end face is less than adpting flange exterior edge face to adpting flange end face annular groove outer rim distance D to double wall pipe end face of flange distance C.
An installation method for double-walled expansion joint, comprises the following steps:
1) be first connected with inner connecting tube one end full weld respectively at bellows two ends, the exterior edge face then adpting flange with tapped blind hole is enclosed within the inner connecting tube the other end outwardly, is connected with inner connecting tube the other end full weld;
2) then honeycomb duct is injected in bellows, larger for honeycomb duct end is connected with adpting flange endoporus one end full weld;
3) outer sleeve is enclosed within a pair adpting flange, makes outer sleeve endoporus side face two ends extrude O-ring seals in the radial groove of a pair adpting flange; Outer sleeve endoporus, bellows outer circumferential face and a pair adpting flange exterior edge face form double-walled expansion joint toroidal cavity;
4) then inner to termination, inner tube one end and double wall pipe flange full weld is connected, then the termination, external pipe one end be enclosed within outside inner tube is connected with double wall pipe flange full weld;
5) O-ring seals of different size is embedded respectively in corresponding a pair adpting flange radial groove separately with in two end face annular grooves of a pair adpting flange, then a pair double wall pipe end face of flange welded with inner tube termination and external pipe termination is docked with the adpting flange at bellows two ends respectively, the radial circle unthreaded hole of double wall pipe flange aims at the tapped blind hole of each self-corresponding adpting flange end face, meanwhile, multiple double wall pipe flange vent also aims at multiple adpting flange vent; Multiple fastening screw trip bolt through unthreaded hole, is screwed in the tapped blind hole of adpting flange end face successively; The O-ring seals of double wall pipe flange exterior edge face extruding opposite side adpting flange end face, completes the installation of double-walled expansion joint.
Structure of the present invention is simple, be easy to processing, installation method is easy to operate, only need the bellows in double-walled expansion joint be fixedly connected with integral by a pair inner connecting tube with the adpting flange full weld at two ends, corresponding O-ring seals is loaded onto in exterior edge face and the outer radial periphery face of the adpting flange then at two ends, again the outer sleeve that seamless steel pipe is made is enclosed within adpting flange and namely makes double-walled expansion joint, outer sleeve is without the need to welding with the adpting flange at two ends, also without the need to adopting bellows manufacture, manufacture cost of the present invention is reduced.The installation of bellows and outer sleeve is independent of each other, and does not affect the normal axial and radial displacement compensate function of the present invention simultaneously.Circle adpting flange vent and the double wall pipe flange vent communicated with each other is respectively equipped with in adpting flange and double wall pipe flange radially outer edge, double-walled expansion joint toroidal cavity and double wall pipe outer lumen are communicated, between double-walled expansion joint inner chamber and double-walled expansion joint toroidal cavity, and sealed against one anotherly between the outer lumen of double wall pipe and interior tube chamber not leak, avoid the danger that gas leakage occurs, meet the code requirement of Classification society.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is the sectional view that the present invention is connected with double wall pipe.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As depicted in figs. 1 and 2, the present invention includes bellows 1, a pair adpting flange 2, honeycomb duct 3, a pair inner connecting tube 4, outer sleeve 5, a pair double wall pipe flange 6 and several O-ring seals 7, the honeycomb duct 3 of one end radial dilatation Cheng great Duan is arranged in bellows 1.Bellows 1 two ends are fixedly connected with a pair inner full weld of adpting flange 2 respectively by inner connecting tube 4, meet the requirement of gas seal.Inner tube 8 is enclosed within external pipe 9, inner tube 8 one end and external pipe 9 one end are fixedly connected with double wall pipe flange 6 one end full weld respectively, 2 O-ring seals 7 are embedded in 2 end face annular grooves 21 of adpting flange 2 exterior edge face and the radial groove 22 of adpting flange 2 outer circumferential face respectively, outer sleeve 5 is enclosed within a pair adpting flange 2, outer sleeve 5 length A is greater than the distance B between the radial groove 22 at a pair adpting flange 2 two ends, outer sleeve 5 end face is less than adpting flange 3 exterior edge face to adpting flange 2 end face annular groove outer rim distance D to double wall pipe flange 6 end face distance C, to ensure axial displacement compensate function of the present invention, O-ring seals 11 in the radial groove 22 of the respective corresponding adpting flange 2 of outer sleeve 5 endoporus side face two ends extruding simultaneously, meet gas seal requirement.Outer sleeve 5 endoporus that seamless steel pipe is made is smooth, and can move axially by trace on a pair adpting flange 2, its displacement distance is subject to the restriction of double wall pipe flange 6 end face.Due to the C<D in Fig. 2, therefore, outer sleeve 5 can not disengage with O-ring seals 11, guarantees gas seal function.
Double wall pipe flange 6 is fixedly connected with corresponding adpting flange 2 by multiple fastening screw trip bolts 61 of radial equipartition, and double wall pipe flange 6 exterior edge face is resisted against on adpting flange 2 exterior edge face, and the O-ring seals 7 in 2 end face annular grooves of squeeze flow flange 2 exterior edge face.Outer sleeve 5 endoporus, bellows 1 outer circumferential face and a pair adpting flange 2 interior edge face form double-walled expansion joint toroidal cavity 100.
Adpting flange 2 radial direction is provided with a circle adpting flange vent 23.Double wall pipe flange 6 outer end is provided with a circle and the double wall pipe flange vent 62 corresponding with adpting flange vent 23 position.Double wall pipe flange 6 the inner is provided with the ventilation annular groove 63 communicated with double wall pipe flange vent 62, and double-walled expansion joint toroidal cavity 100 encloses double wall pipe flange vent 62 by a circle adpting flange vent 23, successively, ventilation annular groove 63 communicates with the double wall pipe outer lumen 200 between inner tube 8 and external pipe 9.
O-ring seals 7 in two end face annular grooves 21 of adpting flange 2 exterior edge face is positioned at the radial direction outside of a circle adpting flange vent 23.Double-walled expansion joint toroidal cavity 100 can be made to communicate with double wall pipe outer lumen 200 and sealing gas not occur to leak.
Installation method of the present invention comprises the following steps:
1) be first connected with inner connecting tube 4 one end full weld respectively at bellows 1 two ends, the exterior edge face then adpting flange 2 with tapped blind hole 24, towards on overcoat inner connecting tube 4 the other end, is connected with inner connecting tube 4 the other end full weld.
2) then honeycomb duct 3 is injected in bellows 1, larger for honeycomb duct end 31 is connected with the adpting flange 2 endoporus right-hand member full weld of right-hand member of the present invention.
3) outer sleeve 5 is enclosed within a pair adpting flange 2, makes outer sleeve endoporus 51 side face two ends extrude O-ring seals 7 in the radial groove 22 of a pair adpting flange 2; Outer sleeve endoporus, bellows 1 outer circumferential face and a pair adpting flange 2 exterior edge face form double-walled expansion joint toroidal cavity 100.
4) then termination, inner tube 8 one end is connected with the inner full weld of double wall pipe flange 6, then the termination, external pipe 9 one end be enclosed within outside inner tube 8 is connected with double wall pipe flange 6 full weld;
5) O-ring seals 7 of different size is embedded respectively in the respective radial groove of corresponding a pair adpting flange 6 22 and in two end face annular grooves 21 of a pair adpting flange 2, then a pair double wall pipe flange 6 end face welded with inner tube 8 termination and external pipe termination 9 is docked with the adpting flange 2 at bellows 1 two ends respectively, the unthreaded hole 64 of the radial circle of double wall pipe flange 6 aims at the tapped blind hole 24 of each self-corresponding adpting flange end face, meanwhile, multiple double wall pipe flange vent 62 also aims at multiple adpting flange vent 23; Multiple fastening screw trip bolt 61 through unthreaded hole 64, is screwed in the tapped blind hole 24 of adpting flange 2 end face successively, and the O-ring seals 7 of double wall pipe flange 6 exterior edge face extruding opposite side adpting flange 2 end face, completes installation of the present invention.
As mentioned above, the present invention installs very convenient.Ensure the sealing between air in hazardous gas in inner tube 8 and double wall pipe outer lumen 200, meanwhile, double-walled expansion joint toroidal cavity 100 communicates with double wall pipe outer lumen 200, can ensure that in double wall pipe outer lumen 200, air completely cuts off with extraneous.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (7)
1. a double-walled expansion joint, comprise bellows, a pair adpting flange and honeycomb duct, described honeycomb duct is arranged in bellows; It is characterized in that: also comprise a pair inner connecting tube, outer sleeve, a pair double wall pipe flange and several O-ring seals, bellows two ends are fixedly connected with a pair adpting flange the inner respectively by inner connecting tube, inner tube one end and external pipe one end are fixedly connected with double wall pipe flange one end respectively, several O-ring seals is embedded in several end face annular groove of adpting flange exterior edge face and the radial groove of adpting flange outer circumferential face respectively, outer sleeve is enclosed within a pair adpting flange, the O-ring seals in the radial groove of the respective corresponding adpting flange of outer sleeve endoporus side face two ends extruding; Double wall pipe flange is fixedly connected with corresponding adpting flange by multiple fastening screw trip bolt of radial equipartition, and double wall pipe flange exterior edge face is resisted against on adpting flange exterior edge face, and the O-ring seals in the end face annular groove of squeeze flow flange exterior edge face; Outer sleeve endoporus, bellows outer circumferential face and a pair adpting flange interior edge face form double-walled expansion joint toroidal cavity.
2. double-walled expansion joint as claimed in claim 1, is characterized in that: adpting flange radial direction is provided with a circle adpting flange vent.
3. double-walled expansion joint as claimed in claim 1, is characterized in that: double wall pipe flange outer end is provided with the circle double wall pipe flange vent corresponding with adpting flange vent position.
4. double-walled expansion joint as claimed in claim 1, it is characterized in that: double wall pipe flange the inner is provided with the ventilation annular groove communicated with double wall pipe flange vent, double-walled expansion joint toroidal cavity is communicated with the double wall pipe outer lumen between inner tube and external pipe by a circle adpting flange vent, a circle double wall pipe flange vent, ventilation annular groove successively.
5. double-walled expansion joint as claimed in claim 1, is characterized in that: the O-ring seals in two end face annular grooves of adpting flange exterior edge face lays respectively at the interior outside of radial direction that adpting flange one encloses vent.
6. double-walled expansion joint as claimed in claim 1, it is characterized in that: outer sleeve length A is greater than the distance B between the radial groove at a pair adpting flange two ends, outer sleeve end face is less than adpting flange exterior edge face to adpting flange end face annular groove outer rim distance D to double wall pipe end face of flange distance C.
7. an installation method for double-walled expansion joint as claimed in claim 1, is characterized in that: comprise the following steps:
1) be first connected with inner connecting tube one end full weld respectively at bellows two ends, the exterior edge face then adpting flange with tapped blind hole is enclosed within the inner connecting tube the other end outwardly, is connected with inner connecting tube the other end full weld;
2) then honeycomb duct is injected in bellows, larger for honeycomb duct end is connected with adpting flange endoporus one end full weld;
3) outer sleeve is enclosed within a pair adpting flange, makes outer sleeve endoporus side face two ends extrude O-ring seals in the radial groove of a pair adpting flange; Outer sleeve endoporus, bellows outer circumferential face and a pair adpting flange exterior edge face form double-walled expansion joint toroidal cavity;
4) then inner to termination, inner tube one end and double wall pipe flange full weld is connected, then the termination, external pipe one end be enclosed within outside inner tube is connected with double wall pipe flange full weld;
5) O-ring seals of different size is embedded respectively in corresponding a pair adpting flange radial groove separately with in two end face annular grooves of a pair adpting flange, then a pair double wall pipe end face of flange welded with inner tube termination and external pipe termination is docked with the adpting flange at bellows two ends respectively, the radial circle unthreaded hole of double wall pipe flange aims at the tapped blind hole of each self-corresponding adpting flange end face, meanwhile, multiple double wall pipe flange vent also aims at multiple adpting flange vent; Multiple fastening screw trip bolt through unthreaded hole, is screwed in the tapped blind hole of adpting flange end face successively; The O-ring seals of double wall pipe flange exterior edge face extruding opposite side adpting flange end face, completes the installation of double-walled expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510446894.1A CN105042259B (en) | 2015-07-28 | 2015-07-28 | Double-wall expansion joint and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510446894.1A CN105042259B (en) | 2015-07-28 | 2015-07-28 | Double-wall expansion joint and installation method |
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| CN105042259A true CN105042259A (en) | 2015-11-11 |
| CN105042259B CN105042259B (en) | 2017-03-08 |
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| CN201510446894.1A Active CN105042259B (en) | 2015-07-28 | 2015-07-28 | Double-wall expansion joint and installation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287011A (en) * | 2016-08-29 | 2017-01-04 | 浙江奇爱管业有限公司 | A kind of high Anti-leakage type gas bellows |
| CN107966281A (en) * | 2016-10-20 | 2018-04-27 | 苏州思创西玛控制系统有限公司 | A kind of low noise valve fire resisting pattern experimental rig |
| CN110375120A (en) * | 2019-07-02 | 2019-10-25 | 亚达管道系统股份有限公司 | Double-wall pipe with free wxpansion section |
| CN111255971A (en) * | 2020-01-15 | 2020-06-09 | 中国航发沈阳发动机研究所 | Annular cavity expansion compensator |
| CN112032432A (en) * | 2020-08-20 | 2020-12-04 | 中船动力研究院有限公司 | Double-layer pipe flange |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287011A (en) * | 2016-08-29 | 2017-01-04 | 浙江奇爱管业有限公司 | A kind of high Anti-leakage type gas bellows |
| CN107966281A (en) * | 2016-10-20 | 2018-04-27 | 苏州思创西玛控制系统有限公司 | A kind of low noise valve fire resisting pattern experimental rig |
| CN110375120A (en) * | 2019-07-02 | 2019-10-25 | 亚达管道系统股份有限公司 | Double-wall pipe with free wxpansion section |
| CN111255971A (en) * | 2020-01-15 | 2020-06-09 | 中国航发沈阳发动机研究所 | Annular cavity expansion compensator |
| CN111255971B (en) * | 2020-01-15 | 2021-11-19 | 中国航发沈阳发动机研究所 | Annular cavity expansion compensator |
| CN112032432A (en) * | 2020-08-20 | 2020-12-04 | 中船动力研究院有限公司 | Double-layer pipe flange |
| CN112032432B (en) * | 2020-08-20 | 2022-04-15 | 中船动力研究院有限公司 | Double-layer pipe flange |
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| Publication number | Publication date |
|---|---|
| CN105042259B (en) | 2017-03-08 |
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Address after: 212211 No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |