CN207279109U - A kind of double-skin duct connecting device - Google Patents
A kind of double-skin duct connecting device Download PDFInfo
- Publication number
- CN207279109U CN207279109U CN201721191460.2U CN201721191460U CN207279109U CN 207279109 U CN207279109 U CN 207279109U CN 201721191460 U CN201721191460 U CN 201721191460U CN 207279109 U CN207279109 U CN 207279109U
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- gasket
- flange
- tube
- double
- connecting device
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Abstract
It the utility model is related to a kind of assembling pipe joint, more particularly to a kind of double-skin duct connecting device, including inner tube and the outer tube being socketed in outside inner tube, inner flange is fixed with inner tube, outward flange disk is fixed with outer tube, the first gasket in a ring is equipped between inner flange and outward flange disk, first annular baffle is fixed with the outer wall of inner tube, the second ring baffle is fixed with the inner wall of outer tube, the second gasket in a ring is folded between first annular baffle and the second ring baffle.The purpose of this utility model is to provide a kind of double-skin duct connecting device, has the characteristics that to improve bimetallic tube junction sealing effect.The utility model has the advantages that：Leak-proof sealing effect of the bimetallic tube at connecting interface can be not only improved, also has the characteristics that connection structure is easily installed, and connection structure stability maintenance is higher, and service life is longer.
Description
Technical field
A kind of assembling pipe joint is the utility model is related to, more particularly to a kind of double-skin duct connecting device.
Background technology
Pipeline connection is technology relatively common and universal in modern industrial technology.General pipeline is connected as directly welding
Connection, or connected by connector.Flange is also a kind of very universal application as the middleware that pipeline connects.Flange connects
Connect i.e. two pipelines, pipe fitting or equipment, be first individually fixed on a ring flange, flange gasket is added between two ring flanges,
It is bolted connection together, so as to complete to connect.Connected at present using the mostly single-layer pipeline of flanged joint.
Notification number is that the Chinese utility model of CN201209733Y discloses a kind of double-skin duct connecting device, it is intended that is solved
For flowing different fluid in Double layer pipeline between interlayer and inner tube, and connection when outer tube can not be welded directly with inner tube is asked
Topic, concrete technical scheme are：Inner flange is welded and fixed on inner pipe, and outward flange disk, inside and outside flange are welded and fixed on outer tube
Gasket is equipped between disk, inside and outside ring flange is bolted to connection.
The inside and outside ring flange and the fit clearance of inner tube used in above-mentioned double-skin duct connecting device, and gasket
Aging, can influence the sealing effect of interlayer surrounded by inner and outer pipe, cause liquid in interlayer to leak out.
Utility model content
The purpose of this utility model is to provide a kind of double-skin duct connecting device, has and improves the sealing of bimetallic tube junction
The characteristics of effect.
The above-mentioned purpose of the utility model technical scheme is that：A kind of double-skin duct connection dress
Put, including inner tube and the outer tube that is socketed in outside inner tube, be fixed with inner flange in inner tube, outward flange is fixed with outer tube
Disk, is equipped with the first gasket in a ring, is fixed with the outer wall of inner tube first annular between inner flange and outward flange disk
Baffle, is fixed with the second ring baffle on the inner wall of outer tube, is folded between first annular baffle and the second ring baffle and is in
Second gasket of annular.
By using above-mentioned technical proposal, when inner flange and outward flange disk are locked using bolt, inner flange with
Outward flange disk is close to each other, and inner flange drives inner tube, and pipe depths is moved further out, is fixed at this time on outer wall of inner tube
First annular baffle is moved closer to the second ring baffle being fixed on outer tube wall, and compresses the second gasket, the first ring
Shape baffle, the second ring baffle, the second gasket form first of sealing and anti-leakage structure, inner flange, outward flange disk, first close
Packing forms second sealing and anti-leakage structure, and dual-seal leakage-proof structure improves the sealing effect of bimetallic tube junction.
Preferably, the second gasket both sides are equipped with first annular protrusion, are all provided with first annular baffle, the second ring baffle
There is the annular groove with first annular male cooperation.
By using above-mentioned technical proposal, when the second gasket is deformed, first annular protrusion riddles annular
In groove, the fitted seal effect of the second gasket and first annular baffle or the second ring baffle can be improved.
Preferably, the opposite side of inner flange and outward flange disk is respectively equipped with the first groove, the second groove, the first gasket
It is located between the first groove and the second groove, the cross sectional shape of the first gasket is isosceles trapezoid, and the bottom of isosceles trapezoid is tight
By inner tube.
By using above-mentioned technical proposal, since the cross sectional shape of the first gasket is isosceles trapezoid, and the first groove with
The spatial form and the form fit of the first gasket that second groove surrounds, when inner flange and outward flange disk are close to each other,
First groove, the second groove extrude the two sides of the first gasket respectively, by the first gasket to perpendicular to interior tube axis direction
Extruding, makes the first gasket be pressed on outer wall of inner tube.
Preferably, garter spring is equipped between inner flange and outward flange disk, garter spring hoop is on the first gasket.
By using above-mentioned technical proposal, when tightening garter spring, the first gasket to extruding on outer wall of inner tube, is made the by garter spring
One gasket is riddled between inner flange and outward flange disk, the fit clearance of inner flange and the first gasket, outward flange disk
It is substantially reduced with the fit clearance of the first gasket, improves sealing effect.
Preferably, inner flange is bolted with outward flange disk, and bolt is equipped with threaded hole, is equipped with and uses in threaded hole
It is vertical with bolt in the housing screw for pushing the first gasket, housing screw.
By using above-mentioned technical proposal, spiral shell is beaten on the circle bolt for connecting fixed inner flange, outward flange disk
After pit, housing screw is screwed into threaded hole, the first gasket is pushed by multiple housing screws, so that the first gasket
It is close on outer wall of inner tube.
Preferably, the opposite side of inner flange and outward flange disk is fixed with the second ring for depressing the first gasket
Shape is raised, and the second annular protrusion is pressed on the corner angle at the top of the first gasket, and the second annular protrusion is tilted to inner tube direction.
By using above-mentioned technical proposal, since the second annular protrusion is tilted to inner tube direction, when inner flange, outer
When ring flange moves towards, inner flange is pressed downward the first gasket with the second annular protrusion on outward flange disk, makes first
Gasket presses on outer wall of inner tube, and the fit clearance of the first gasket and inner flange, outward flange disk has reduced, from
And improve liquid-leakage preventing effect.
Preferably, a circle membrane waterproofing is equipped with outer tube, membrane waterproofing one end is gluing on outward flange disk, and the other end is gluing
In on outer wall of inner tube.
By using above-mentioned technical proposal, membrane waterproofing, waterproof are pasted in the interlayer of inner tube and outer tube using seccotine
Film layer keeps apart the liquid in one end and interlayer of outer tube fixed flange, can further improve outer tube fixed flange one end
Liquid-leakage preventing effect.
In conclusion the utility model has the advantages that：
1. first annular baffle, the second ring baffle, the second gasket form first of sealing and anti-leakage structure, inner flange
Disk, outward flange disk, the first gasket composition second sealing and anti-leakage structure, dual-seal leakage-proof structure improve bimetallic tube even
Leak-proof sealing effect at connection interface；
2. the ring flange used, garter spring etc. are common connector simple in structure, quick and easy for installation, and these are connected
Part connective stability is higher, and service life is longer.
Brief description of the drawings
Fig. 1 is the overall structure diagram of double-skin duct connecting device in embodiment 1；
Fig. 2 is the semi-cutaway of double-skin duct connecting device in embodiment 1；
Fig. 3 is A portions enlarged drawing in Fig. 2；
Fig. 4 is B portions enlarged drawing in Fig. 2；
Fig. 5 is the structure diagram of garter spring in embodiment 2；
Fig. 6 is the semi-cutaway of double-skin duct connecting device in embodiment 2；
Fig. 7 is the semi-cutaway of double-skin duct connecting device in embodiment 3；
Fig. 8 is the semi-cutaway of double-skin duct connecting device in embodiment 4.
Reference numeral：1st, inner tube；2nd, outer tube；3rd, inner flange；31st, the first groove；4th, outward flange disk；41st, the second groove；
5th, the first gasket；6th, the second gasket；61st, first annular protrusion；7th, first annular baffle；71st, annular groove；8th, the second ring
Shape baffle；9th, garter spring；10th, housing screw；11st, the second annular protrusion；12nd, membrane waterproofing；13rd, bolt；14th, interlayer.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment 1
A kind of double-skin duct connecting device, as shown in Figure 1 and Figure 2, including inner tube 1 and outer tube 2, inner tube 1 are inserted in outer tube 2
And formed with interlayer 14 between 2 inner wall of 1 outer wall of inner tube and outer tube.Liquid, such bimetallic tube are connected with interlayer 14, inner tube 1
Road structure is relatively conventional in heat exchanger.
Now using one end of identical 4 closed sandwich 14 of inner flange 3 and outward flange disk of size, it is specially：
The second ring baffle 8 is first welded and fixed on 2 inner wall of outer tube, is then welded and fixed the first ring on 1 outer wall of inner tube
Shape baffle 7, and with strength glue rubber system, the second gasket 6 in a ring on first annular baffle 7, then by inner tube 1
It is inserted into outer tube 2, the second ring baffle 8 is pressed on the second gasket 6, be finally welded and fixed outward flange disk in 2 end of outer tube
4, and the first gasket 5 is filled between outer ring flange 4 and inner flange 3；
First annular 7 and second ring baffle 8 of baffle is vertical with the axis of inner tube 1, wherein first annular baffle 7 is fixed
Stretch on the part in outer tube 2 in inner tube 1, when inner flange 3 and outward flange disk 4 are locked with bolt 13, make first close
When packing 5 is crushed out of shape, the second ring baffle 8 can extrude the second gasket 6 on first annular baffle 7 just.
As shown in figure 3, the both sides of the second gasket 6 are integrally formed with first annular raised 61, and first annular baffle 7
Offer annular groove 71 with the opposite side of the second ring baffle 8, the position of annular groove 71, shape with it is first annular convex
Play 61 to match, first annular raised 61 are caught in annular groove 71.
As shown in figure 4, central the first groove 31 for offering annular respectively of 4 opposite side of inner flange 3 and outward flange disk,
Second groove 41, the first groove 31 is identical with the shape of the second groove 41 and position correspondence, the first groove 31 and the second groove 41
The shape surrounded and the form fit of the first gasket 5.The cross sectional shape of first gasket 5 is isosceles trapezoid, and isosceles trapezoid
Larger bottom surface is close to inner tube 1, when inner flange 3 and outward flange disk 4 are close to each other, the first groove 31, the second groove 41
The two sides of the first gasket 5 are extruded respectively, and the first gasket 5 is extruded to perpendicular to 1 axis direction of inner tube, makes the first sealing
Pad 5 is pressed on 1 outer wall of inner tube.
As shown in figure 4, all process threaded hole, screw thread on the every bolt 13 of connection inner flange 3 and outward flange disk 4
Hole is between inner flange 3 and outward flange disk 4, and threaded hole is vertical with bolt 13.Housing screw 10 is screwed into threaded hole,
The bottom of housing screw 10 is against the top of the first gasket 5.The use of flat housing screw 10 is optimal, relative to the pressure at sharp bottom
Tight screw 10, flat housing screw 10, which can produce the first gasket 5, preferably compresses effect.
Embodiment 2
A kind of double-skin duct connecting device, as shown in Figure 5, Figure 6, as different from Example 1, does not use on bolt 13
Open threaded hole, and be screwed into threaded hole the mode of housing screw 10 to compress the first gasket 5, but inner flange 3 with
A garter spring 9 is bound round between outward flange disk 4, after the bolt by tightening 9 end of garter spring tightens garter spring 9, garter spring 9 can tie tight first close
Packing 5.
Embodiment 3
A kind of double-skin duct connecting device, as shown in fig. 7, as different from Example 1, not using and opening spiral shell on bolt 13
Pit, and the mode of housing screw 10 is screwed into threaded hole to compress the first gasket 5, but in inner flange 3 and outer method
Integrally formed with the second annular protrusion 11 on the opposite side of blue disk 4, one end that the second annular protrusion 11 protrudes from ring flange is inclined
The first gasket 5 is tiltedly directed toward, and the second annular protrusion 11 and place ring flange are concentric.From section, the second annular protrusion 11
The one end for protruding above ring flange is preferably pressed on the corner angle at the top of the first gasket 5.
When fixing inner flange 3 and outward flange disk 4 using bolt 13, inner flange 3 is moved towards with outward flange disk 4,
The second annular protrusion 11 being butted at this time on 5 top corner angle of the first gasket can push the first gasket 5.
Embodiment 4
A kind of double-skin duct connecting device, as shown in figure 8, on the basis of embodiment 1, surrounds by inner tube 1 and outer tube 2
Interlayer 14 in add membrane waterproofing 12, by the use of fluid-tight plastic foil as membrane waterproofing 12, with seccotine by membrane waterproofing 12
One end around being pasted on outward flange disk 4, the other end is around being pasted on the outer wall of inner tube 1.
This specific embodiment is only explanation to the utility model, it is not the limitation to the utility model, ability
Field technique personnel as needed can make the present embodiment the modification of no creative contribution after this specification is read, but
As long as all protected in the right of the utility model be subject to Patent Law.
Claims (7)
1. a kind of double-skin duct connecting device, including inner tube（1）Be socketed in inner tube（1）Outer outer tube（2）, inner tube（1）It is upper solid
Surely it is equipped with inner flange（3）, outer tube（2）On be fixed with outward flange disk（4）, inner flange（3）With outward flange disk（4）Between set
There is the first gasket in a ring（5）, it is characterised in that：Said inner tube（1）Outer wall on be fixed with first annular baffle
（7）, outer tube（2）Inner wall on be fixed with the second ring baffle（8）, first annular baffle（7）With the second ring baffle（8）It
Between be folded with the second gasket in a ring（6）.
A kind of 2. double-skin duct connecting device according to claim 1, it is characterised in that：Second gasket（6）Two
Side is equipped with first annular protrusion（61）, first annular baffle（7）, the second ring baffle（8）On be equipped with and first annular protrusion
（61）The annular groove of cooperation（71）.
A kind of 3. double-skin duct connecting device according to claim 1, it is characterised in that：The inner flange（3）With it is outer
Ring flange（4）Opposite side be respectively equipped with the first groove（31）, the second groove（41）, the first gasket（5）It is recessed to be located in first
Groove（31）With the second groove（41）Between, the first gasket（5）Cross sectional shape be isosceles trapezoid, the bottom of isosceles trapezoid abuts
Inner tube（1）.
A kind of 4. double-skin duct connecting device according to claim 3, it is characterised in that：The inner flange（3）With it is outer
Ring flange（4）Between be equipped with garter spring（9）, garter spring（9）Bind round in the first gasket（5）On.
A kind of 5. double-skin duct connecting device according to claim 3, it is characterised in that：The inner flange（3）With it is outer
Ring flange（4）Pass through bolt（13）Connection, bolt（13）Threaded hole is equipped with, is equipped with threaded hole for depressing the first gasket
（5）Housing screw（10）, housing screw（10）With bolt（13）Vertically.
A kind of 6. double-skin duct connecting device according to claim 3, it is characterised in that：The inner flange（3）With it is outer
Ring flange（4）Opposite side be fixed with for depressing the first gasket（5）The second annular protrusion（11）, the second convex annular
Rise（11）It is pressed on the first gasket（5）On the corner angle at top, the second annular protrusion（11）To inner tube（1）Direction tilts.
A kind of 7. double-skin duct connecting device according to claim 1, it is characterised in that：The outer tube（2）Inside it is equipped with one
Enclose membrane waterproofing（12）, membrane waterproofing（12）One end is gluing in outward flange disk（4）On, the other end is gluing in inner tube（1）On outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721191460.2U CN207279109U (en) | 2017-09-15 | 2017-09-15 | A kind of double-skin duct connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721191460.2U CN207279109U (en) | 2017-09-15 | 2017-09-15 | A kind of double-skin duct connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207279109U true CN207279109U (en) | 2018-04-27 |
Family
ID=61981250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721191460.2U Expired - Fee Related CN207279109U (en) | 2017-09-15 | 2017-09-15 | A kind of double-skin duct connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207279109U (en) |
-
2017
- 2017-09-15 CN CN201721191460.2U patent/CN207279109U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 Termination date: 20200915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |