CN108278433A - A kind of attachment device of double wall high-pressure gas pipelines - Google Patents
A kind of attachment device of double wall high-pressure gas pipelines Download PDFInfo
- Publication number
- CN108278433A CN108278433A CN201711464897.3A CN201711464897A CN108278433A CN 108278433 A CN108278433 A CN 108278433A CN 201711464897 A CN201711464897 A CN 201711464897A CN 108278433 A CN108278433 A CN 108278433A
- Authority
- CN
- China
- Prior art keywords
- flange
- rear venting
- double wall
- endoporus
- attachment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
- F16L39/005—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for concentric pipes
-
- 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
- F16L23/00—Flanged joints
- F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
- F16L23/08—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
A kind of attachment device of double wall high-pressure gas pipelines, including preceding ventilation flange, rear venting flange, a pair of of Hafu-type cutting ferrule, T-type sealing ring, inner seal ring and exterior seal ring, wherein, the center of preceding ventilation flange and rear venting flange is equipped with endoporus in an axial direction, it is equipped with multiple exit orifice in an axial direction around the endoporus, preceding ventilation flange after docking is held tightly to form inner and outer pipes integral structure by a pair of of Hafu-type cutting ferrule by bolt and nut with rear venting flange, the endoporus of preceding ventilation flange is connected to the inner tube to be formed and convey main medium with the endoporus of rear venting flange, the exit orifice of preceding ventilation flange is connected to the outer tube to form the secondary medium of conveying with the exit orifice of rear venting flange.The present invention has small, it is easy for installation, connect the advantages that safe and reliable, it can be in the fields such as natural gas extraction and conveying, chemical industry, shipping industry, aerospace, for realizing the connection of the double wall pipeline of conveying high-pressure fuel gas or toxic and harmful gas under the indoor or poor environment of ventilation.
Description
Technical field
The present invention relates to for high pressure fuel gas or the pipe of toxic and harmful gas conveying under the indoor or poor environment of ventilation
Road attachment device is specifically designed a kind of attachment device of double wall high-pressure gas pipelines, belongs to chemical technology field.
Background technology
With the development of international trade and shipping, using oil product as the discharge pair of the exhaust gas of the boat diesel engine of fuel
The pollution of current environment is increasingly severe, in order to realize that energy-saving and emission-reduction, dual fuel engine technology obtain more and more passes
Note.Marine low speed dual fuel engine refers to that can not only use fuel oil (diesel oil/heavy oil) to be used as fuel, while can also use combustion
Marine main engine of the gas (natural gas) as fuel.
For the dual fuel engine using Diesel cycles, the combustion gas used is high-pressure natural gas (30MPa), by ship
Oceangoing ship auxiliary system exports high-pressure natural gas, by burning in pipeline to dual fuel engine.According to classification society rule,
Such high-pressure natural gas conveyance conduit must use double-wall structure, inner tube conveying high-pressure natural gas, outer tube to carry out forced ventilation,
It is equipped with hydrocarbon object concentration sensor at ventilation opening, whether there is gas leakage for real-time monitoring tubular road.
The various ways such as welding, flanged joint or threaded connection may be used in the connection type of double wall pipeline, wherein welding
It connects that mode is the most reliable, but in view of the installation of pipeline and opens and inspect, it is necessary to dismountable connection type such as flange or screw thread be added.
Due to being conveying high-pressure natural gas, the requirement for being detachably connected position be must zero leakage, therefore flanged joint phase
It is more extensive for being threadedly coupled application.
For conventional high pressure W.N flange, pipeline pressure higher grade, then flange outer diameter is bigger, flange is thicker, connection
Number of bolts is more；In addition to this, since conveyance conduit is using double-wall structure, connect in inner tube high pressure W.N flange
The place of connecing must increase the combined type outer tube case that can be opened and inspect, and for connecting outer tube, which need to form sealing space, prevent
The case where issuable inner tube high pressure gas leakage is diffused into exterior space, while the outer tube case must also have enough thickness
Degree and intensity, caused high pressure gas impact when resisting inner tube local damage.
Using the split type connection structure of this inner and outer pipe, direct result be exactly pipeline junction volume it is big, from it is great,
Sealing surface is more, leads to that junction connection reliability is low, easily reveals combustion gas, is high to space requirement, installing and open and inspect inconvenience.
Invention content
The technical problem to be solved by the present invention is to overcome that existing high pressure gas double wall pipe connection type volume is big, peace
The deficiencies of dress and maintenance open and inspect inconvenience, have a risk of leakage, provides a kind of attachment device of double wall high-pressure gas pipelines, passes through
It is integrally connected formula structure using inner and outer pipes, keeps the structure of attachment device more compact, structural strength is improved, reduces volume, reduces
Sealing surface reaches the purpose of increasing connection reliability, reducing installation difficulty and the requirement to installation space, raising operating efficiency.
Based on above-mentioned purpose, technical solution provided by the invention is as follows：
A kind of attachment device of double wall high-pressure gas pipelines comprising preceding ventilation flange, rear venting flange, a pair of of Hough
The center of formula cutting ferrule, T-type sealing ring, inner seal ring and exterior seal ring, the preceding ventilation flange and rear venting flange is equipped with along axis
To endoporus, be equipped with multiple exit orifice in an axial direction around the endoporus, the pair of Hafu-type cutting ferrule will pass through by bolt and nut
Preceding ventilation flange after interface docking is held tightly to form inner and outer pipes integral structure with rear venting flange, flange of divulging information before described
Endoporus is connected to the inner tube to be formed and convey main medium with the endoporus of rear venting flange, the exit orifice and rear venting method of flange of divulging information before described
Blue exit orifice is connected to the outer tube to form the secondary medium of conveying.
Further, the center of the interface of the rear venting flange is equipped with the central channel around the endoporus, to
The T-type sealing ring and inner seal ring be sealed to the main medium is set in the central channel, which is nested in institute
It states between the periphery of T-type sealing ring and the cell wall of the central channel.
Further, the seal groove for surrounding the exit orifice is provided on the interface of the rear venting flange, to
The exterior seal ring being sealed to the secondary medium is embedded in the seal groove.
Further, the preceding ventilation flange is equipped with the several location holes being evenly arranged in ring week, the rear venting method
Orchid is equipped with two dowel holes being symmetrically distributed on ring week, and two dowel hole passes through two positioning pins and different location holes
Mating realizes that positioning of the preceding ventilation flange with rear venting flange in different location is docked, it is ensured that ventilation flange before described
The exit orifice proper alignment of exit orifice and rear venting flange.
Further, the periphery of the preceding ventilation flange and rear venting flange is equipped with male cone (strobilus masculinus), the pair of Hafu-type
The inner wall of cutting ferrule is equipped with close inner conical surface of the card with the male cone (strobilus masculinus).
Further, the outside of the preceding ventilation flange and rear venting flange is equipped with inner tube extension and outer tube extends
Portion, the outer tube extension are shorter than said inner tube extension, the end of said inner tube extension and outer tube extension be equipped with for
The groove of external double wall pipeline welding.
Further, the main medium is high pressure fuel gas or toxic and harmful gas, and the pair medium is for strong
Make the inert protective gas or air of ventilation.
Compared with existing high pressure gas double wall pipe attachment device, the present invention has following advantages：
1, compact-sized, disclosure risk is low --- and inner and outer pipes integrated device, compact-sized, reliability greatly improves；Together
When inner tube use T-type seal ring seal, for outer tube using sealing ring sealing, good seal performance reduces disclosure risk.
2, easy for installation, small --- only 9 kinds altogether of package unit component, it is only necessary to which double-wall pipe can be completed in several steps
It is reliably connected, while volume and installation space at least reduce half relative to existing high pressure gas double-walled pipe connection.
3, connection reliability is high, installation facility --- T-type sealing ring is installed by central channel, it is therefore prevented that close in installation process
The occurrence of seal ring drops out or loses；Inner tube high-pressure gas pressure is bigger, and sealing surface fitting is tighter, T-type seal ring seal effect
Fruit is better；The setting of multiple location holes, it is ensured that the high-efficient simple of ventilation flange exit orifice is to just；A pair of of Hafu-type cutting ferrule makes described
Attachment device structural integrity is more preferable, at the same it is convenient to overhaul when dismounting installation.
Description of the drawings
Fig. 1 is the explosive view of structure of the invention.
Fig. 2 is the sectional arrangement drawing of the present invention.
Fig. 3 is the installation diagram of T-type sealing ring and inner seal ring of the present invention.
Fig. 4 is the outline drawing of ventilation flange and rear venting flange before the present invention.
Fig. 5 is the outline drawing of the present invention.
In figure,
1-preceding ventilation flange, 11-forward flange endoporus, 12-forward flange exit orifice, 13-location holes,
14-outer tube extensions, 2-rear venting flanges, 21-rear flange endoporus, 22-rear flange exit orifice,
23-dowel holes, 24-inner tube extensions, 25-seal grooves, 26-central channels,
3-Hafu-type cutting ferrules, 4-T-type sealing rings, 41-interior sealing ring recess, 5-inner seal rings,
6-exterior seal rings, 7-positioning pins, 8-bolts, 9-nuts.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
It please referring to Fig.1, it is illustrated that the attachment device of double wall high-pressure gas pipelines is connected in double wall high-pressure gas pipelines,
Including preceding ventilation flange 1, rear venting flange 2, a pair of of Hafu-type cutting ferrule 3, T-type sealing ring 4, inner seal ring 5 and exterior seal ring 6.
Referring to Fig. 4, ventilation flange 1 is equipped with forward flange endoporus 11 in an axial direction before described, the forward flange endoporus 11 is surrounded
Around be equipped with multiple forward flange exit orifice 12 in an axial direction；The rear venting flange 2 is equipped with rear flange endoporus 21 in an axial direction, encloses
Multiple rear flange exit orifice 22 in an axial direction are equipped with around the rear flange endoporus 21；Ventilation flange 1 and rear venting method before described
Orchid 2 is docked by interface.Referring to Fig. 1, the pair of Hafu-type cutting ferrule 3 will be led to before after docking by bolt 8 and nut 9
Wind flange 1 forms inner and outer pipes integral structure with the holding of rear venting flange 2, referring to Fig. 2, the preceding ventilation flange 1 is with after
The divulge information periphery of flange 2 is equipped with male cone (strobilus masculinus), and the inner wall of the pair of Hafu-type cutting ferrule 3 is equipped with inner conical surface, by the inner conical surface with
The close card of male cone (strobilus masculinus) is matched, and so that rear venting flange, rear venting flange and a pair of of Hafu-type cutting ferrule 3 is tightly formed compact rigidity whole
Body.After ventilation flange 1 is docked with rear venting flange 2 before described, referring to Fig. 2, the forward flange endoporus 11 and rear flange endoporus
21 connections, form the inner tube for conveying main medium, which is high pressure fuel gas or toxic and harmful gas；Outside the forward flange
Hole 12 is connected to the outer tube for forming the secondary medium of conveying with rear flange exit orifice 22, which is to protect gas for force ventilated inertia
Body or air.
Referring to Fig. 4, the preceding ventilation flange 1 is equipped with the several location holes 13 being evenly arranged in ring week, it is logical after described
Wind flange 2 is equipped with two dowel holes 23 being symmetrically distributed on ring week, and two dowel hole 23 is by two positioning pins 7 and not
Same location hole 13 is coupled, and realizes that positioning of the preceding ventilation flange 1 with rear venting flange 2 in different location is docked, it is ensured that institute
The proper alignment for stating forward flange exit orifice 12 and rear flange exit orifice 22, is shown in Fig. 2.
The center of the interface of the rear venting flange 2 is equipped with the central channel 26 around the rear flange endoporus 21, asks
Refering to Fig. 3, to be sealed to the main medium, they are set to described together for the T-type sealing ring 4 and inner seal ring 5
In central channel 26, the periphery of the T-type sealing ring 4 is equipped with interior sealing ring recess 41, and the inner seal ring 5 is nested in the inner seal ring
In slot 41, and between the periphery and the cell wall of the central channel 26 of the T-type sealing ring 4.
The seal groove 25 for surrounding the rear flange exit orifice 22, institute are provided on the interface of the rear venting flange 2
The exterior seal ring 6 stated is to be sealed the secondary medium, in the seal groove 25.
Referring to Fig. 2, the outside of the preceding ventilation flange 1 and rear venting flange 2 is equipped with inner tube extension 24 and outer tube
Extension 14, the outer tube extension 14 shorter than said inner tube extension 24, said inner tube extension 24 and outer tube extension 14
End is equipped with the groove for being welded with external double wall pipeline.
The installation method of attachment device of the present invention is as follows：
In the double wall that the inner tube extension 24 of preceding ventilation flange 1 and rear venting flange 2 is connected with needs respectively first
Pipe is welded, the double wall for then connecting the outer tube extension 14 of preceding ventilation flange 1 and rear venting flange 2 with needs respectively
The outer tube of pipe is welded.
After the completion of the tests such as weld dressing and flaw detection, inner seal ring 5 is first sleeved on to the inner seal ring of 4 periphery of T-type sealing ring
It in slot 41, is then fitted into together in the central channel 26 of rear venting flange 2, then exterior seal ring 6 is packed into the sealing of rear venting flange 2
In slot 25, while positioning pin 7 being fitted into the dowel hole 23 of rear venting flange 2, the setting angle of ventilation flange 1 before adjusting,
Make two positioning pins 7 match to access in suitable location hole 13, it is ensured that the forward flange exit orifice 12 is accurate right with rear flange exit orifice 22
Just, the mounted in pairing mode of ventilation flange 1 and rear venting flange 2 before completing.
Lubricating grease finally is applied on a pair of of Hafu-type cutting ferrule 3 and the contact conical surface of preceding ventilation flange 1 and rear venting flange 2,
A pair of of Hafu-type cutting ferrule 3 of installation and in order and torque demand tightens bolt 8 and nut 9 successively, to complete described device
Installation, is shown in Fig. 5.
The equivalence changes and modification that all contents according to this specification are made, belong to the technical scope of the present patent application；
The present invention claims protection domain be not limited only to above-described embodiment, also the invention obviously should be converted and be replaced including other
For scheme.
Claims (7)
1. a kind of attachment device of double wall high-pressure gas pipelines, it is characterised in that：The attachment device include preceding ventilation flange,
Rear venting flange, a pair of of Hafu-type cutting ferrule, T-type sealing ring, inner seal ring and exterior seal ring, divulge information before described flange and rear venting
The center of flange is equipped with endoporus in an axial direction, and multiple exit orifice in an axial direction, the pair of Hafu-type cutting ferrule are equipped with around the endoporus
Preceding ventilation flange after being docked by interface by bolt and nut is held tightly to form inner and outer pipes integral type knot with rear venting flange
The endoporus of structure, flange of divulging information before described is connected to the inner tube to be formed and convey main medium with the endoporus of rear venting flange, divulges information before described
The exit orifice of flange is connected to the outer tube to form the secondary medium of conveying with the exit orifice of rear venting flange.
2. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：The rear venting method
The center of blue interface is equipped with the central channel around the endoporus, to the T-type sealing ring being sealed to the main medium
It is set in the central channel with inner seal ring, which is nested in the periphery of the T-type sealing ring and the central channel
Between cell wall.
3. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：In the rear venting
The seal groove for surrounding the exit orifice is provided on the interface of flange, it is embedding to the exterior seal ring that is sealed to the secondary medium
It is placed in the seal groove.
4. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：The preceding ventilation method
Orchid is equipped with the several location holes being evenly arranged in ring week, and the rear venting flange is equipped with two positioning being symmetrically distributed on ring week
Pin hole, two dowel hole are coupled by two positioning pins from different location holes, realize the preceding ventilation flange and rear venting
Flange is docked in the positioning of different location, it is ensured that the exit orifice proper alignment of the exit orifice and rear venting flange of ventilation flange before described.
5. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：The preceding ventilation method
The blue periphery with rear venting flange is equipped with male cone (strobilus masculinus), and the inner wall of the pair of Hafu-type cutting ferrule is equipped with close card and matches the male cone (strobilus masculinus)
Inner conical surface.
6. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：The preceding ventilation method
Blue and rear venting flange outside is equipped with inner tube extension and outer tube extension, which is shorter than said inner tube extension
The end of portion, the outer tube extension and inner tube extension is equipped with the groove for being welded with external double wall pipeline.
7. the attachment device of double wall high-pressure gas pipelines as described in claim 1, it is characterised in that：The main medium is
High pressure fuel gas or toxic and harmful gas, the pair medium is for force ventilated inert protective gas or air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464897.3A CN108278433A (en) | 2017-12-28 | 2017-12-28 | A kind of attachment device of double wall high-pressure gas pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464897.3A CN108278433A (en) | 2017-12-28 | 2017-12-28 | A kind of attachment device of double wall high-pressure gas pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108278433A true CN108278433A (en) | 2018-07-13 |
Family
ID=62802685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464897.3A Withdrawn CN108278433A (en) | 2017-12-28 | 2017-12-28 | A kind of attachment device of double wall high-pressure gas pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021001059A1 (en) * | 2019-07-01 | 2021-01-07 | Vetco Gray Scandinavia As | Two flow, subsea, hydrocarbon fluid flow path connecting concentric hub and use of such a hub |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732414A (en) * | 1986-11-18 | 1988-03-22 | Junio Inaba | Joint for coaxial pipe |
| CN201050652Y (en) * | 2007-06-01 | 2008-04-23 | 成都植源机械科技有限公司 | Self-tightening type flange |
| US20100270788A1 (en) * | 2008-04-03 | 2010-10-28 | Mitsubishi Heavy Industries, Ltd. | Connecting structure of double tube and assembling or disassembling method of double tube |
| CN203743678U (en) * | 2013-10-09 | 2014-07-30 | 中国石油大学(北京) | Sealing element for deep-water pipeline connector |
| CN104847981A (en) * | 2015-06-12 | 2015-08-19 | 上海中船三井造船柴油机有限公司 | Connecting apparatus of dual-wall high-pressure gas pipelines |
-
2017
- 2017-12-28 CN CN201711464897.3A patent/CN108278433A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732414A (en) * | 1986-11-18 | 1988-03-22 | Junio Inaba | Joint for coaxial pipe |
| CN201050652Y (en) * | 2007-06-01 | 2008-04-23 | 成都植源机械科技有限公司 | Self-tightening type flange |
| US20100270788A1 (en) * | 2008-04-03 | 2010-10-28 | Mitsubishi Heavy Industries, Ltd. | Connecting structure of double tube and assembling or disassembling method of double tube |
| CN203743678U (en) * | 2013-10-09 | 2014-07-30 | 中国石油大学(北京) | Sealing element for deep-water pipeline connector |
| CN104847981A (en) * | 2015-06-12 | 2015-08-19 | 上海中船三井造船柴油机有限公司 | Connecting apparatus of dual-wall high-pressure gas pipelines |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021001059A1 (en) * | 2019-07-01 | 2021-01-07 | Vetco Gray Scandinavia As | Two flow, subsea, hydrocarbon fluid flow path connecting concentric hub and use of such a hub |
| GB2599868A (en) * | 2019-07-01 | 2022-04-13 | Vetco Gray Scandinavia As | Two flow, subsea, hydrocarbon fluid flow path connecting concentric hub and use of such a hub |
| GB2599868B (en) * | 2019-07-01 | 2023-03-01 | Vetco Gray Scandinavia As | Two flow, subsea, hydrocarbon fluid flow path connecting concentric hub and use of such a hub |
| AU2020300634B2 (en) * | 2019-07-01 | 2023-05-11 | Vetco Gray Scandinavia As | Two flow, subsea, hydrocarbon fluid flow path connecting concentric hub and use of such a hub |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180713 |