CN206246877U - Double-walled pipe flange, adpting flange and double-wall pipe - Google Patents
Double-walled pipe flange, adpting flange and double-wall pipe Download PDFInfo
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- CN206246877U CN206246877U CN201621276765.9U CN201621276765U CN206246877U CN 206246877 U CN206246877 U CN 206246877U CN 201621276765 U CN201621276765 U CN 201621276765U CN 206246877 U CN206246877 U CN 206246877U
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- walled pipe
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Abstract
This application provides a kind of double-walled pipe flange, adpting flange and double-wall pipe, the double-walled pipe flange, including flange body, flange body includes multiple bolts hole of the distributions such as central through hole, the multiple air vents in point distributions such as the peripheral radial directions of central through hole and the periphery radial direction in air vent, annular projection is additionally provided with one flange face of flange body, the edge for connecting outer tube of annular projection is located between air vent and bolt hole.The adpting flange includes the first flange and second flange that concentric laminating is set, and first flange, second flange are above-mentioned double-walled pipe flange, and first flange and second flange are bolted.The double-wall pipe, including the concentric outer tube being arranged and inner tube, also including above-mentioned adpting flange.The application had both met the connection request of hazardous gas air supply system double-wall pipe, and the security performance of system is ensured again, and at utmost ensured the smoothness and sealing of each pipeline connection.
Description
Technical field
The disclosure relates generally to flange, and in particular to Naval Architecture and Ocean Engineering field, more particularly to a kind of for dangerous gas
The double-walled pipe flange of body air supply system, adpting flange and double-wall pipe.
Background technology
Liquefied natural gas (LNG) is the admixture of gas based on hydrocarbon, and main component is methane, explosion limit
(and air ratio) is 5~15%；The LNG of liquid is -164 DEG C.
With the rise of oil price and the international regulations requirement more and more higher environmentally friendly to sea-freight, LNG is dropping as marine fuel
Low cost, reduction airborne release, particularly NOx, CO2, SOx and particle (flue dust) discharge aspect it is with the obvious advantage, have green
The title of the energy.The powered ship with LNG as fuel enjoys favor in recent years.
To meet with the requirement of gas fuel powered ship intrinsic safety type cabin design, LNG air supply system pipelines are generally used
Outer tube ventilation, the double-walled pipeline structure pattern of inner tube supply.In view of air supply system in connection equipment (combustion gas valve member unit, gas
Body engine machine etc.) when the requirement that need to overhaul and dismantle, take the double-walled pipe flange of special construction to be attached more.Because LNG is supplied
The requirement of gas security of system is very high, and inner and outer pipes should ensure that airtight, natural gas leaking be prevented, while air supply system is for outer tube
Ventilation have strict demand, flange must ensure good ventilation effect, when inner tube is leaked outer tube also can by force
Ventilation, discharges fuel gas in time, to avoid great security incident.
At present, domestic natural gas fuels and energy ship is using the few of flange pattern double-wall pipe air supply system, only CNOOC
The representational LNG Power Vessels of several, 6500P tugboats etc., substantially use the technology of external (watt Ceylon, sieve sieve).Remaining
Interior pipe flange connection, the form of outer tube welding being taken LNG powered ship air supply system double-wall pipes, for example more：Domestic certain inland river dissipates
Goods cargo ship, double-wall pipe connection combustion gas valve member unit (GVU) when, inner tube is connected with GVU inner valve members using form of flanges, outer tube and
The reserved ventilation duct mouth of pipe butt welding of GVU housings collar.This double-wall pipe type of attachment, inner and outer pipe is each connected, it is ensured that outer tube
The smoothness of ventilation, but double-wall pipe is to carry out when local overhauling, replacement or disengaging equipment, it may appear that inconvenience is disassembled, in addition it is broken
Situation about tearing open, so as to cause man-hour to expand, the normal of influence air supply system is used.
Utility model content
In view of drawbacks described above of the prior art or deficiency, are made that the utility model.
In a first aspect, the utility model provides a kind of double-walled pipe flange, including：In the flange sheet of hollow ring structure
Body, the flange body include for connect inner tube central through hole, the central through hole periphery radially etc. point distribution it is many
Multiple bolts hole of point distribution such as individual air vent and the periphery radial direction in the air vent, on a flange face of the flange body
Be additionally provided with the annular projection for connecting outer tube, the edge for connecting outer tube of the annular projection be located at the air vent and
Between the bolt hole.
Preferably, the air vent is mounting hole.
Preferably, the bolt hole is identical with the air vent number, and the bolt hole and the air vent are radially
One by one just to distribution.
Preferably, the flange face in the flange body back to the annular projection is binding face, on the binding face
It is provided with two annular grooves concentric with the central through hole；
Along the radial direction of the flange body, the one of annular groove in two annular grooves is located at the ventilation
The inner side in hole, another annular groove is located between the air vent and the bolt hole, and ring is equipped with two annular grooves
Shape sealing ring.
Second aspect, the utility model additionally provides a kind of adpting flange, including the first flange that concentric laminating is set
And second flange, the first flange is above-mentioned double-walled pipe flange, and the second flange is above-mentioned double-walled pipe flange；Along described
The axial direction of one flange and the second flange, multiple air vents of the first flange and the multiple of the second flange are led to
Air holes is just right one by one, and the first flange and the second flange are bolted.
The third aspect, the utility model also includes a kind of double-wall pipe, including the concentric outer tube being arranged and inner tube, also includes
Above-mentioned adpting flange, wherein the central through hole of the first flange and the second flange is connected with said inner tube, it is described
The edge of the annular projection of the edge of the annular projection of first flange and the second flange is connected with the outer tube.
Compared with prior art, the technical scheme that the utility model is provided, is connected by the central through hole of double-walled pipe flange
Inner tube, the edge connection outer tube of the annular projection on double-walled pipe flange is easy to operate；In addition by first flange and the second method
Adpting flange and the double-wall pipe comprising adpting flange that orchid is formed, the air vent radial direction decile of two flanges and vertically one by one just
It is right, both meeting the connection request of hazardous gas air supply system double-wall pipe, in the case of ensureing security of system energy again, maximum journey
Degree ensures patency and the ventilation requirement of outer tube, it is to avoid adpting flange is outer because bolt hole dislocation causes air vent to laminate influence
The problem of pipe ventilation.Furthermore it is preferred that the air-tightness that two O-ring seals further ensure flange connection is set, adpting flange
Simple structure, install convenient shortens construction period, reduces construction cost.
Brief description of the drawings
By the detailed description made to non-limiting example made with reference to the following drawings of reading, the application other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the double-walled pipe flange that the utility model embodiment one is provided；
Fig. 2 is the sectional view in A-A directions in Fig. 1；
Fig. 3 is the adpting flange mounted in pairing mode schematic diagram that the utility model embodiment two is provided；
Fig. 4 is the installation explosive view of the double-wall pipe that the utility model embodiment three is provided.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining relevant utility model, rather than the restriction to the utility model.Further need exist for explanation
, for the ease of description, the part related to utility model is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the structural representation of the double-walled pipe flange that the utility model embodiment one is provided.Fig. 2 is A-A directions in Fig. 1
Sectional view.
As depicted in figs. 1 and 2, embodiment of the present utility model provides a kind of double-walled pipe flange, including in open circles
The flange body 1 of ring structure, flange body 1 is including the central through hole 2 for connecting inner tube, in central through hole periphery radial direction decile
Multiple bolts hole 4 of point distribution such as multiple air vents 3 of distribution and the periphery radial direction in air vent, a flange face of flange body
On be additionally provided with annular projection 5 for connecting outer tube, the edge 6 for connecting outer tube of annular projection is located at air vent 3 and spiral shell
Between keyhole 4.As shown in figure 1, multiple air vents are into a circle arrangement, multiple bolts hole are arranged into a circle.
Further, air vent 3 is preferably mounting hole, and ventilation effect is good, can ensure pipeline between outer tube and inner tube
Ensure the requirement of ventilation while smoothness.
Further, bolt hole is identical with the number of air vent, and bolt hole and air vent are radially one by one just to distribution,
When ensureing to form adpting flange subsequently through two double-walled pipe flanges, being capable of two double-wall pipes of most directly perceived, maximally effective guarantee
The air vent of flange is just right, most intuitively, the maximally effective patency for ensureing pipeline between outer tube and inner tube.
Further, in flange body back to annular projection a flange face be binding face, binding face be provided with two with
The concentric annular groove of central through hole；Along the radial direction of flange body, the one of annular groove in two annular grooves
Positioned at the inner side of air vent, another annular groove is located between air vent and bolt hole, and ring is equipped with two annular grooves
Shape sealing ring.As depicted in figs. 1 and 2, two annular grooves are inner ring connected in star 7 and external annular groove 8, inner ring connected in star 7
In the inner side of air vent, external annular groove 8 is located between air vent and bolt hole.Such setting can realize two double-wall pipes
Sealing is anti-when the binding face of flange is contacted loses heart.
Fig. 3 is the adpting flange mounted in pairing mode schematic diagram that the utility model embodiment two is provided.As shown in figure 3, this practicality
New embodiment two provides a kind of adpting flange, including the first flange 9 and second flange 10 that concentric laminating is set, first
Flange includes the double-walled pipe flange as described in above-mentioned embodiment, and second embodiment includes the double-walled tube method as described in above-mentioned embodiment
It is blue；Along the radial direction of adpting flange, multiple air vents of first flange and multiple air vents of second flange are just right one by one, the first method
Blue and second flange is connected by bolt 11.In the adpting flange that second embodiment is provided in the utility model, first flange is such as
Structure shown in Fig. 1 and Fig. 2, without in addition to two annular grooves, other are and first flange except at its binding face for second flange
Structure it is consistent.
As shown in figure 3, with reference to Fig. 1 and Fig. 2, the air vent of first flange is identical with the number of bolt hole, and bolt hole and
Air vent is radially one by one just to distribution；The air vent of second flange is identical with the number of bolt hole, and bolt hole and air vent
Radially one by one just to distribution；Along the axial direction of adpting flange, multiple ventilations of multiple air vents and second flange of first flange
Hole is just right one by one, effectively prevent what adpting flange valid circulation area caused by bolt hole dislocation causes air vent to laminate was reduced
Problem, farthest ensures the patency of pipeline between outer tube and inner tube.
Wherein, the number of first flange and second flange upper bolt hole is 6, namely realizes first by 6 bolts
Being brought into close contact between flange and second flange, it is main if the quantity of the bolt hole on each flange is very few (such as 2~5)
The laminating degree at each position has certain shortcoming between flange and secondary flange, the problem that air-tightness is poor is caused, if each flange
On bolt hole quantity it is excessive (such as 7,8 or more), the structure of adpting flange can be caused more complicated, install cumbersome；
Equally, the number of the air vent in first flange and second flange is also 6, and such setting disclosure satisfy that wanting for ventilation
Ask, and simple structure.
Certainly, adpting flange of the present utility model is not limited to the structure shown in Fig. 3, and first flange and second flange can
To be the double-walled pipe flange shown in Fig. 1 and Fig. 2, two are equipped with the binding face of first flange and the binding face of second flange
Annular groove, the air-tightness between two flanges is improved by the O-ring seal on two flange binding faces；Or, the first method
Annular groove is not opened up on the binding face of blue and second flange, and Gask-O-Seal realization can be set between two flanges
Sealing between two flanges.
Fig. 4 is the installation explosive view of the double-wall pipe that the utility model embodiment three is provided, and with reference to Fig. 3, is further described
The utility model provide adpting flange in hazardous gas air supply system with the connected mode of two-tube (inner and outer tubes).
First the central through hole in first flange 9 connects inner tube 12, and outer tube is connected at the edge of the annular projection of first flange 9
13；The central through hole in second flange 10 connects inner tube 12 again, and outer tube 13 is connected at the edge of the annular projection of second flange 10；
First flange 9 and second flange 10 are connected finally by bolt 11, two annulars is wherein offered on the binding face of first flange 9 recessed
Groove, by the inner ring shape sealing ring 14 on the binding face of first flange 9 and outer O-ring seal 15 seal first flange and
The binding face of second flange.
The adpting flange that the utility model is provided includes first flange and second flange, air vent radial direction of two flanges etc.
Point, number it is identical, both meeting the connection request of hazardous gas air supply system double-wall pipe, ensure again security of system can situation
Under, at utmost ensure patency and the ventilation requirement of outer tube, it is to avoid adpting flange causes air vent because of bolt hole dislocation
Laminate the problem of influence outer tube ventilation.In addition, binding face two O-ring seals of setting in first flange are further ensured that
The air-tightness of flange connection.The connecting flange structure is simple, and install convenient shortens construction period, reduces construction cost.
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art
Member is it should be appreciated that involved utility model scope in the application, however it is not limited to the particular combination of above-mentioned technical characteristic
Technical scheme, while should also cover not departing from the case that the utility model conceives, by above-mentioned technical characteristic or its be equal to
Other technical schemes that feature is combined and is formed.Such as features described above has with (but not limited to) disclosed herein
The technical scheme that the technical characteristic for having similar functions is replaced mutually and formed.
Claims (6)
1. a kind of double-walled pipe flange, including in the flange body of hollow ring structure, it is characterised in that the flange body includes
For connecting the central through hole of inner tube, in multiple air vents of point distributions such as central through hole periphery radial direction and in the ventilation
Multiple bolts hole of point distribution are radially waited in the periphery in hole, are additionally provided with for connecting outer tube on a flange face of the flange body
Annular projection, the edge for connecting outer tube of the annular projection is located between the air vent and the bolt hole.
2. double-walled pipe flange according to claim 1, it is characterised in that the air vent is mounting hole.
3. double-walled pipe flange according to claim 1, it is characterised in that the bolt hole and the air vent number phase
Together, and the bolt hole and the air vent radially one by one just to distribution.
4. according to any described double-walled pipe flanges of claim 1-3, it is characterised in that back to the ring in the flange body
The raised flange face of shape is binding face, and the binding face is provided with two annular grooves concentric with the central through hole；
Along the radial direction of the flange body, the one of annular groove in two annular grooves is located at the air vent
Inner side, another annular groove is located between the air vent and the bolt hole, annular is equipped with two annular grooves close
Seal.
5. a kind of adpting flange, it is characterised in that including：First flange and second flange that concentric laminating is set, described the
One flange is the double-walled pipe flange as described in claim 1-4 is any, and the second flange is as described in claim 1-4 is any
Double-walled pipe flange；Along the first flange and the axial direction of the second flange, multiple air vents of the first flange
Multiple air vents with the second flange are just right one by one, and the first flange and the second flange are bolted.
6. a kind of double-wall pipe, including the concentric outer tube being arranged and inner tube, it is characterised in that also including as claimed in claim 5
Adpting flange, wherein
The central through hole of the first flange and the second flange is connected with said inner tube, the ring-type of the first flange
Raised edge and the edge of the annular projection of the second flange are connected with the outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276765.9U CN206246877U (en) | 2016-11-25 | 2016-11-25 | Double-walled pipe flange, adpting flange and double-wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276765.9U CN206246877U (en) | 2016-11-25 | 2016-11-25 | Double-walled pipe flange, adpting flange and double-wall pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246877U true CN206246877U (en) | 2017-06-13 |
Family
ID=59000787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621276765.9U Active CN206246877U (en) | 2016-11-25 | 2016-11-25 | Double-walled pipe flange, adpting flange and double-wall pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246877U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825871A (en) * | 2018-06-20 | 2018-11-16 | 韦伟 | A kind of petroleum pipeline mounting process |
| CN112032432A (en) * | 2020-08-20 | 2020-12-04 | 中船动力研究院有限公司 | Double-layer pipe flange |
| CN113280654A (en) * | 2021-05-27 | 2021-08-20 | 张文军 | Sleeve type heat dissipation device |
-
2016
- 2016-11-25 CN CN201621276765.9U patent/CN206246877U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825871A (en) * | 2018-06-20 | 2018-11-16 | 韦伟 | A kind of petroleum pipeline mounting process |
| 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 |
| CN113280654A (en) * | 2021-05-27 | 2021-08-20 | 张文军 | Sleeve type heat dissipation device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |