CN209026340U - A kind of double-wall pipe with ventilation function - Google Patents
A kind of double-wall pipe with ventilation function Download PDFInfo
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- CN209026340U CN209026340U CN201821742877.8U CN201821742877U CN209026340U CN 209026340 U CN209026340 U CN 209026340U CN 201821742877 U CN201821742877 U CN 201821742877U CN 209026340 U CN209026340 U CN 209026340U
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- ventilation
- flange
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- double
- wall pipe
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Abstract
A kind of double-wall pipe with ventilation function, including inner and outer tubes, it is characterized by: the both ends of the inner and outer tubes are fixedly connected with a flange jointly respectively, the flange includes interstitial hole, ventilation hole and the bolt hole for connection, said inner tube and the interstitial hole are tightly connected, the outer tube is placed on except said inner tube and is sealedly attached on the flange, the annular space for ventilation is formed between said inner tube and outer tube, the ventilation hole is connected to the annular space, and the bolt hole is distributed on the flange of the outer tube peripheral side.The utility model realizes being isolated for fuel gas pipeline and free surrounding space, avoid the risk that fuel gas pipeline breakage leads to gas leakage to ambient enviroment, it ensure that the ventilation function of double-wall pipe simultaneously, have the advantages that connection flexibly, dismounting and it is easy to maintenance, convenient for prefabricated and standardized production, can be used for the gas supply pipeline of gaseous propellant engine.
Description
Technical field
The utility model relates to a kind of supply lines for delivery of fuel gas, and in particular to a kind of double with ventilation function
Wall pipe, belongs to field of mechanical technique.
Background technique
Manufacturing method before the gaspipe of dual fuel engine peculiar to vessel is usually the side for welding whole pipeline
Formula is attached, and is linked together whole pipeline.But this structure is not easy to the prefabricated of pipe fitting, less convenient for the dismounting of pipeline and
Maintenance.
Utility model content
The purpose of this utility model is that overcome the defect of existing gaspipe, provide a kind of with ventilation function
Double-wall pipe, by being attached with the flange of ventilation hole, attaching is at whole gas supply pipeline, both easy to disassemble and replacement,
The ventilation for realizing space between inner and outer pipe again achievees the effect that connection is flexible, facilitates Prefabrication.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of double-wall pipe with ventilation function, including inner and outer tubes, it is characterised in that: the inner and outer tubes
Both ends are fixedly connected with a flange jointly respectively, which includes interstitial hole, ventilation hole and the bolt hole for connection, described
Inner tube and the interstitial hole are tightly connected, and the outer tube is placed on except said inner tube and is sealedly attached on the flange, described
The annular space for ventilation is formed between inner tube and outer tube, the ventilation hole is connected to the annular space, the bolt pore size distribution
In on the flange of the outer tube peripheral side.
Further, the lateral surface of the flange offers the ring-shaped groove of all ventilation holes of connection.
Further, on the flange inner circumferential side and peripheral side of ring-shaped groove be separately provided for placing it is O-shaped close
The ring seal slot of seal.
Further, the quantity of the ventilation hole and bolt hole is multiple, and the quantity and size of the ventilation hole are according to logical
The demand of air quantity is arranged.
Compared with prior art, the utility model has the beneficial effects that
1) setting of ventilation hole connects the airspace between each section of double-wall pipe inner and outer pipes on flange, guarantees
The ventilation function of double-wall pipe, can also be changed size, the quantity of ventilation hole according to the demand of ventilation quantity.
2) structure of double-wall pipe realizes being isolated for fuel gas pipeline and free surrounding space, and avoiding fuel gas pipeline breakage causes to fire
Risk of the gas leakage to ambient enviroment.
3) flanged (FLGD) double-wall pipe is used, allows whole gaspipe according to field demand, is divided into many sections and carries out
It connects, flanged joint is used between each section, change whole gaspipe using the connection type of welding, keep connection cleverer
It lives, dismount and repair more convenient.
4) double-wall pipe is convenient to carry out in factory prefabricated, realizes the standardized production of pipe fitting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structure enlargement diagram of flange.
In figure,
1-inner tube, 2-outer tubes, 3-flanges, 4-annular spaces, 31-interstitial holes, 32-ventilation holes, 33-annular ditch
Slot, 34-bolts hole, 35-ring seal slots.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but this cannot be limited with this
The protection scope of utility model.
Referring to Fig. 1, it includes inner tube 1 and outer tube 2 that diagram, which has the double-wall pipe of ventilation function, the inner tube 1 and outer tube 2
Both ends be separately connected a flange 3, which is fixedly connected with the flange 3 with outer tube 2 jointly.
Referring to Fig. 1, the flange 3 includes interstitial hole 31, multiple ventilation holes 32 and multiple bolts hole 34.
Said inner tube 1 and the interstitial hole 31 are tightly connected, and are used for delivery of fuel gas；The outer tube 2 is placed on said inner tube 1
Except and be hermetically connected on the flange 3, between said inner tube 1 and outer tube 2 formed for ventilation annular space 4.
One side double-wall pipe structure realizes being isolated for fuel gas pipeline and peripheral space, and avoiding fuel gas pipeline breakage leads to gas leakage
Into ambient enviroment；Another aspect annular space 4 also assures the ventilation function of double-wall pipe.
The ventilation hole 32 is connected to the annular space 4, the quantity of the ventilation hole 32 be it is multiple, quantity and size are according to leading to
The demand of air quantity is arranged.The lateral surface of the flange 3 offers ring-shaped groove 33, and the ring-shaped groove 33 is by all ventilation holes 32
Connection.
The inner circumferential side and peripheral side of the ring-shaped groove 33 are respectively arranged with a ring seal slot 35, the ring seal slot 35
For placing O-ring seal, it is ensured that the inside of inner tube 1 and annular space 4, annular space 4 with can be reliably close outside outer tube 2
Envelope.
The bolt hole 34 is distributed on the flange 3 of 2 peripheral side of outer tube, for the connection of each section of double-wall pipe, connection
The interstitial hole 31 of each section of double-wall pipe, inner tube 1, ring-shaped groove 33, ventilation hole 32, annular space 4, ring seal slot 35 etc. are mutual afterwards
Corresponding connection.
Connection for the double-wall pipe of different tube diameters, can be by the interstitial hole 31 and ventilation hole 32 of the two panels flange 3 of docking
Isostructural size and arrangement are adjusted, so that the interstitial hole 31 of both sides, the ring-shaped groove 33 of ventilation, ring seal slot
35, bolt hole 34 etc. corresponds to each other connection.
Flange connection allows whole gas supply pipeline to be divided into many segments according to field demand to be attached, respectively
Flanged joint is directly used between segment, makes to connect that more flexible, installation is very convenient, is also convenient for dismounting, the replacement of double-wall pipe.This
Kind sectional double-wall pipe is also more convenient prefabricated in factory, only needs simply connection installation at the scene, is conducive to double-walled
The standardized production of pipe.
The double-wall pipe with ventilation function can be used for the gas supply pipeline of gaseous propellant engine.
Above-mentioned case study on implementation is not used to limit the scope of the utility model, and protection scope required by the utility model is not
It is only limitted to above-mentioned case study on implementation, also should include other to the obvious equivalent transformation of the utility model and alternative solution.
Claims (4)
1. a kind of double-wall pipe with ventilation function, including inner and outer tubes, it is characterised in that: the two of the inner and outer tubes
End is fixedly connected with a flange jointly respectively, which includes interstitial hole, ventilation hole and the bolt hole for connection, it is described in
Pipe is tightly connected with the interstitial hole, and the outer tube is placed on except said inner tube and is sealedly attached on the flange, described interior
The annular space for ventilation is formed between pipe and outer tube, the ventilation hole is connected to the annular space, and the bolt hole is distributed in
On the flange of the outer tube peripheral side.
2. the double-wall pipe according to claim 1 with ventilation function, it is characterised in that: the lateral surface of the flange is opened
Ring-shaped groove equipped with all ventilation holes of connection.
3. the double-wall pipe according to claim 2 with ventilation function, it is characterised in that: ring-shaped groove on the flange
Inner circumferential side and peripheral side be separately provided for place O-ring seal ring seal slot.
4. the double-wall pipe according to claim 1 with ventilation function, it is characterised in that: the ventilation hole and bolt hole
Quantity be it is multiple, the quantity and size of the ventilation hole are arranged according to the demand of ventilation quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742877.8U CN209026340U (en) | 2018-10-26 | 2018-10-26 | A kind of double-wall pipe with ventilation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742877.8U CN209026340U (en) | 2018-10-26 | 2018-10-26 | A kind of double-wall pipe with ventilation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026340U true CN209026340U (en) | 2019-06-25 |
Family
ID=66907203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821742877.8U Active CN209026340U (en) | 2018-10-26 | 2018-10-26 | A kind of double-wall pipe with ventilation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765312A (en) * | 2020-07-02 | 2020-10-13 | 中车大连机车车辆有限公司 | Double-layer gas pipeline and connecting structure and manufacturing method thereof |
| GB2612347A (en) * | 2021-10-29 | 2023-05-03 | Lachlan Ivett Jonathon | A centring cap for CSST sleeving |
-
2018
- 2018-10-26 CN CN201821742877.8U patent/CN209026340U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765312A (en) * | 2020-07-02 | 2020-10-13 | 中车大连机车车辆有限公司 | Double-layer gas pipeline and connecting structure and manufacturing method thereof |
| GB2612347A (en) * | 2021-10-29 | 2023-05-03 | Lachlan Ivett Jonathon | A centring cap for CSST sleeving |
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