CN207514469U - A kind of bilayer electric melting pipe fittings - Google Patents
A kind of bilayer electric melting pipe fittings Download PDFInfo
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- CN207514469U CN207514469U CN201721474591.1U CN201721474591U CN207514469U CN 207514469 U CN207514469 U CN 207514469U CN 201721474591 U CN201721474591 U CN 201721474591U CN 207514469 U CN207514469 U CN 207514469U
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- tube
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- binding post
- outer tube
- inner tube
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Abstract
The utility model discloses a kind of double-deck electric melting pipe fittings, it is related to electric melting pipe fittings field, including inner tube, outer tube and two binding posts, the both ends of the outer tube outer wall are respectively provided with a binding post storage tank, each the corresponding outer tube wall of binding post storage tank is respectively provided with a columnar connection boss, and the end face that said inner tube is close to two connection boss is set on outer tube bore, and set with outer coaxial tube, two binding posts connect boss with two and correspond, and binding post is set through connection boss and inner pipe wall.The utility model proposes a kind of double-deck electric melting pipe fittings for being used to connecting into petroleum pipeline into double-deck pipe fitting to solve the problems, such as more difficult monitored, the more difficult discovery leakage point of the polyethylene tube of current individual layer.
Description
Technical field
The utility model is related to electric melting pipe fittings field more particularly to a kind of double-deck electric melting pipe fittings.
Background technology
The laying of petroleum pipeline be petroleum pipeline construction in be essential and particularly important process, at present, polyethylene
The engineering that pipe fitting is attached petroleum pipeline laying is increasing.Polyethylene tube has service life length, will not get rusty
Advantage.The polyethylene tube used in existing work progress is often individual layer pipe fitting, and the polyethylene tube of individual layer is using process
If it find that oil is revealed, it is more difficult to monitored, also more difficult discovery leakage point, and oil leakage can cause larger environment dirty
Dye, seriously it will cause combustion explosions, are brought great potential safety hazard to people's life.
If the polyethylene tube in petroleum pipeline can be arranged to bilayer, inner tube is used for oil transportation, inner tube and outer tube
Between cavity be divided into one section of one-part form closed cavity, and pressurize gas is filled in closed cavity, it is empty by monitoring different closings
The air pressure change of intracavitary pressurize gas will be that maintenance personnel monitors petroleum pipeline and searching to judge whether petroleum pipeline leaks
Leakage point brings great convenience.
Invention content
In order to solve, the polyethylene tube of current individual layer is more difficult monitored, more difficult to find asking for leakage point to the utility model
Topic proposes a kind of double-deck electric melting pipe fittings for being used to connecting into petroleum pipeline into double-deck pipe fitting.
To achieve these goals, the utility model uses following technical scheme：A kind of bilayer electric melting pipe fittings, including interior
Pipe, outer tube and two binding posts, the binding post is followed successively by from top to bottom connects electric section, the first retaining section, limit convex rim segment and the
Several annular flanges, the first retaining section are equipped in two retaining sections, the first retaining section and the second retaining section in an axial direction
On several annular flanges be integrally formed upright pyramidal structure, several annular flanges in the second retaining section are integrally formed
Inverted pyramidal structure；The both ends of the outer tube outer wall are respectively provided with a binding post storage tank, and each binding post storage tank corresponds to
Outer tube wall be respectively provided with a columnar connection boss, the end face that said inner tube is close to two connection boss is set in outer tube
Chamber, and set with outer coaxial tube；Two binding posts connect boss with two and correspond, and binding post is through connection boss and inner tube
Tube wall is set, and the second retaining section of binding post is located in inner pipe wall, and the defining flange section of binding post is located at outer wall of inner tube and company
Between connecing raised head face, the first retaining section of binding post is located in connection boss, and the electric section that connects of binding post is housed positioned at binding post
In slot, and connect and outer tube outer surface is not extended out at the top of electric section；The both ends of said inner tube inner wall are respectively equipped with the first welding area and
Two welding areas, are equipped with the first heating wire in first welding area, equipped with the second heating wire in second welding area, described the
One end is electrically connected between one heating wire and the second heating wire, and the other end is connect respectively with a binding post.
Preferably, further including two locking jacking blocks, the locking jacking block is set between inner tube and outer tube, on locking jacking block
End is close to outer wall of inner tube, and lower end is close to outer tube wall, and two locking jacking blocks connect boss with two and correspond, and set respectively
In two connection boss opposite sides.
Preferably, the outer tube wall or outer wall of inner tube are equipped with limit protrusion, the locking jacking block is equipped with and limiting
The matched limit card slot of protrusion.
Preferably, described two connection outside the boss are equipped with rigid anchor ear.
Preferably, the outer tube outer wall is equipped with locating flange.
Therefore, the utility model has the advantages that：1st, it is set on each binding post there are two pagoda joint structure,
It effectively prevent falling off between inside and outside pipe fitting, meanwhile, inner and outer pipes are matched for detachable dismounting, can be chosen various sizes of inner tube and be carried out
Assembling, for different occasions；2nd, double-deck electric melting pipe fittings solve the coaxially connected technical barrier of size polyethylene pipe；3rd, binding post
Less than outer tube outer wall design, after outer tube outer sheath jointed tubular workpieces, binding post storage tank can be closed, can protect binding post not by
Corrosion, but further leakage protection has been done in pairs of posts junction.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the enlarged drawing at A in Fig. 1.
Fig. 3 is the enlarged drawing at B in Fig. 1.
Fig. 4 is the structure diagram of binding post in the utility model.
Fig. 5 is the structure diagram of locking jacking block in the utility model.
Fig. 6 is the structure diagram of locking another angle of jacking block in the utility model.
Fig. 7 is the structure diagram of the utility model use state.
1：Outer tube；2：Inner tube；3：Binding post；301：Connect electric section；302：First retaining section；303：Limit convex rim segment；304：
Second retaining section；4：Connect boss；5：Binding post storage tank；6：Rigid anchor ear；7：First welding area；8：Second welding area；9：
First heating wire；10：Second heating wire；11：Locking jacking block；12：Locating flange；13：Limit protrusion；14：Limit card slot；15：
Extension tube attached；16：Inner connecting tube.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.
A kind of bilayer electric melting pipe fittings, referring to Fig. 1 to Fig. 7, including inner tube 2,1, two binding post 3 of outer tube and two locking tops
Block 11, the binding post 3 is followed successively by from top to bottom connects electric section 301, the first retaining section 302,303 and second retaining of limit convex rim segment
Section 304, as shown in figure 4, being equipped with several annular flanges, institute in an axial direction in the first retaining section 302 and the second retaining section 304
Upright pyramidal structure is integrally formed in several annular flanges stated in the first retaining section 302, if in the second retaining section 304
Inverted pyramidal structure is integrally formed in dry annular flange；The both ends of 1 outer wall of outer tube are respectively provided with a binding post storage tank 5,
Each 5 corresponding 1 inner wall of outer tube of binding post storage tank is respectively provided with a columnar connection boss 4, described two to connect outside boss 4
Side is equipped with rigid anchor ear 6, and the lower face that said inner tube 2 is close to two connection boss 4 is set on 1 inner cavity of outer tube, and same with outer tube 1
Axis is set；Two binding posts 3 connect boss 4 with two and correspond, and binding post 3 is set through connection boss 4 with 2 tube wall of inner tube
It puts, the second retaining section 304 of binding post 3 is located in 2 tube wall of inner tube, and the inversion pyramidal structure in the second retaining section 304 can be prevented
Only inner tube 2 comes off with binding post 3；The limit convex rim segment 303 of binding post 3 is located between 4 end face of 2 outer wall of inner tube and connection boss,
Limit convex rim segment 303 limits when being installed for binding post 3 so that connects electric section 301, the first retaining section 302 and the second retaining section 304
Installation site is accurate；First retaining section 302 of binding post 3 is located in connection boss 4, the upright tower in the first retaining section 302
Structure can prevent outer tube 1 from coming off with binding post 3, and the electric section 301 that connects of binding post 3 is located in binding post storage tank 5, and connect electric section
301 top does not extend out 1 outer surface of outer tube, after 1 outside socket extension tube attached of outer tube, can close binding post storage tank 5, can
Binding post 3 is protected not to be corroded, but 3 junction of pairs of posts done it is further leakage protection, even if having gas or liquid from
Binding post junction is revealed, and can not be leaked out from binding post storage tank 5, as shown in Figure 2.The both ends of 2 inner wall of said inner tube
The first welding area 7 and the second welding area 8 are respectively equipped with, the first heating wire 9 is equipped in first welding area 7, described second is molten
It connects and the second heating wire 10 is equipped in area 8, one end is electrically connected between 9 and second heating wire 10 of the first heating wire, the other end point
It is not electrically connected with a binding post 3.The locking jacking block 11 is set between inner tube 2 and outer tube 1, locking 11 upper end of jacking block and inner tube
2 outer walls are close to, and lower end is close to 1 inner wall of outer tube, and two locking jacking blocks 11 connect boss 4 with two and correspond, and are respectively arranged on
Two 4 opposite sides of connection boss.1 inner wall of outer tube is equipped with limit protrusion 13, and the locking jacking block 11 is equipped with and limiting
Raised 13 matched limit card slots 14, as shown in Figure 5, Figure 6, locking jacking block 11 is used to support inner tube 2, prevents inner tube 2 because of gravity
It comes off with binding post 3,1 outer wall of outer tube is equipped with locating flange 12, and the locating flange 12 installs the time limit for extension tube attached 15
Position, as shown in Figure 3.
In use, as shown in fig. 7, being first respectively inserted into an inner connecting tube 16 in the port at 2 both ends of inner tube so that two inscribed
The port outer wall of pipe 16 is located at the first welding area 7 and the second welding area 8 of inner tube 2 respectively, and two binding posts 3 are connected electro-fusion welding
Machine, energization welding treat that inner connecting tube 16 and 2 welding of inner tube finish；An extension tube attached 15 is respectively arranged on the outside of 1 both ends of outer tube again, profit
With the welding area in extension tube attached 15 and heating wire by outer tube 1 and 15 welding of extension tube attached.Inner tube 2 is used for oil transportation, inner tube 2
Cavity is divided into one section of one-part form closed cavity between outer tube 1, and pressurize gas is filled in closed cavity, and is put into pressure prison
Module is controlled, the pressure of pressurize gas is less than the pressure of oil in inner tube 2, by the gas for monitoring pressurize gas in different closed cavities
Buckling, to judge whether petroleum pipeline leaks, if outer tube 1 is revealed, the air pressure change in closed cavity reduces；If inner tube
2 leakages, oil will flow to the closed cavity between inner tube 2 and outer tube 1 from inner tube 2 so that air pressure becomes larger in closed cavity.By
This brings great convenience as it can be seen that double-deck pipe fitting will be maintenance personnel's monitoring petroleum pipeline and searching leakage point.
Claims (5)
1. a kind of bilayer electric melting pipe fittings, including inner tube（2）, outer tube（1）And two binding posts（3）, it is characterised in that：The wiring
Column（3）It is followed successively by from top to bottom and connects electric section（301）, the first retaining section（302）, limit convex rim segment（303）And the second retaining section
（304）, the first retaining section（302）With the second retaining section（304）On be equipped with several annular flanges in an axial direction, described first
Retaining section（302）On several annular flanges upright pyramidal structure, the second retaining section is integrally formed（304）On it is several
Inverted pyramidal structure is integrally formed in annular flange；The outer tube（1）The both ends of outer wall are respectively provided with a binding post storage tank
（5）, each binding post storage tank（5）Corresponding outer tube（1）Inner wall is respectively provided with a columnar connection boss（4）, said inner tube
（2）It is close to two connection boss（4）End face be set on outer tube（1）Inner cavity, and and outer tube（1）Coaxial arrangement；Two binding posts（3）
Boss is connect with two（4）It corresponds, binding post（3）Through connection boss（4）With inner tube（2）Tube wall is set, binding post（3）
The second retaining section（304）Positioned at inner tube（2）In tube wall, binding post（3）Limit convex rim segment（303）Positioned at inner tube（2）Outer wall
With connecting boss（4）Between end face, binding post（3）The first retaining section（302）Positioned at connection boss（4）It is interior, binding post（3）'s
Connect electric section（301）Positioned at binding post storage tank（5）It is interior, and connect electric section（301）Top do not extend out outer tube（1）Outer surface；It is described
Inner tube（2）The both ends of inner wall are respectively equipped with the first welding area（7）With the second welding area（8）, first welding area（7）Inside it is equipped with
First heating wire（9）, second welding area（8）Inside it is equipped with the second heating wire（10）, first heating wire（9）With the second electricity
Heated filament（10）Between one end be electrically connected, the other end respectively with a binding post（3）Connection.
2. a kind of double-deck electric melting pipe fittings according to claim 1, it is characterised in that：Further include two locking jacking blocks（11）,
The locking jacking block（11）Set on inner tube（2）With outer tube（1）Between, locking jacking block（11）Upper end and inner tube（2）Outer wall is close to, under
End and outer tube（1）Inner wall is close to, two locking jacking blocks（11）Boss is connect with two（4）It corresponds, is respectively arranged on two companies
Connect boss（4）Opposite side.
3. a kind of double-deck electric melting pipe fittings according to claim 2, it is characterised in that：The outer tube（1）Inner wall or inner tube（2）
Outer wall is equipped with limit protrusion（13）, the locking jacking block（11）It is equipped with and limit protrusion（13）Matched limit card slot（14）.
4. a kind of double-deck electric melting pipe fittings according to claim 1, it is characterised in that：Described two connection boss（4）Outside
It is equipped with rigid anchor ear（6）.
5. a kind of double-deck electric melting pipe fittings according to claim 1, it is characterised in that：The outer tube（1）Outer wall is equipped with positioning
Flange（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474591.1U CN207514469U (en) | 2017-11-08 | 2017-11-08 | A kind of bilayer electric melting pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721474591.1U CN207514469U (en) | 2017-11-08 | 2017-11-08 | A kind of bilayer electric melting pipe fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514469U true CN207514469U (en) | 2018-06-19 |
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ID=62537757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721474591.1U Active CN207514469U (en) | 2017-11-08 | 2017-11-08 | A kind of bilayer electric melting pipe fittings |
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| Country | Link |
|---|---|
| CN (1) | CN207514469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457162A (en) * | 2020-04-17 | 2020-07-28 | 中船黄埔文冲船舶有限公司 | Double-layer pipe connecting structure and double-layer pipe connecting method |
| CN115342236A (en) * | 2022-08-19 | 2022-11-15 | 上海外高桥造船海洋工程有限公司 | Cabin penetrating device of LNG ship and installation method thereof |
-
2017
- 2017-11-08 CN CN201721474591.1U patent/CN207514469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457162A (en) * | 2020-04-17 | 2020-07-28 | 中船黄埔文冲船舶有限公司 | Double-layer pipe connecting structure and double-layer pipe connecting method |
| CN115342236A (en) * | 2022-08-19 | 2022-11-15 | 上海外高桥造船海洋工程有限公司 | Cabin penetrating device of LNG ship and installation method thereof |
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