CN2727532Y - Electrothermal molten coupler cover for insulating tube - Google Patents
Electrothermal molten coupler cover for insulating tube Download PDFInfo
- Publication number
- CN2727532Y CN2727532Y CN 200420029590 CN200420029590U CN2727532Y CN 2727532 Y CN2727532 Y CN 2727532Y CN 200420029590 CN200420029590 CN 200420029590 CN 200420029590 U CN200420029590 U CN 200420029590U CN 2727532 Y CN2727532 Y CN 2727532Y
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- CN
- China
- Prior art keywords
- electrothermal
- molten
- electric heat
- heat welding
- coupler cover
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an electrothermal molten coupler cover for insulating tubes comprising an electrothermal molten coupler cover which forms welding seams at axial direction and at radical direction and a metal wire which is fixedly embedded in the periphery of the inner wall of the electrothermal molten coupler cover in welding process. An overline hole is arranged on the electrothermal molten coupler cover. The metal wire is connected with the power conducting wire which penetrates the overline hole by the connecting terminal board. The electrothermal molten coupler cover is also provided with a supporting block threaded hole which is connected with the supporting block screw buckle supporting the hollow part of the electrothermal molten coupler cover. Because the electrothermal molten coupler cover for insulating tubes with the structure causes a plurality of metal wires to be parallel connected with the connecting terminal board, the electrothermal molten coupler cover for insulating tube is provided with uniform metal wires conduction. The electrothermal molten coupler cover for insulating tube simultaneously causes all the seams to form a closed-loop during the heating process to raise the air impermeability of the joint. So, the electrothermal molten coupler cover has the advantages of uniform heating, large heating area and fast heating speed. The electrothermal molten coupler cover is fixedly fused with the thermal insulating bushing. The hollow part of the electrothermal molten coupler cover has good rigidity and firm bonding performance. The welding stress does not exist at the fusion point.
Description
Technical field
The utility model relates to the thermal insulation pipe electric heat welding headgear that a kind of heat supply pipeline thermal insulation pipe connects usefulness.
Background technique
At present, along with the popularization of country to central heat supply, the city warming generally adopts central heat supply, and the coverage area of its heat supply pipeline is also just more and more wider.Be mainly used in district heating outer net pipeline, the heat supply pipeline that promptly forms central heat supply is to be with thermal insulation pipe one that the steel pipe of thermal insulation layer and thermal insulation casing constitutes being formed by connecting successively successively by the outside.The connection of thermal insulation pipe at first is that the steel pipe that will two exposes on the joint thermal insulation pipes is by being weldingly connected, and then use the material electrical fusion joint identical to wrap electrical fusion joint and thermal insulation casing to be welded together, thereby make successively the thermal insulation pipe formation heat supply pipeline that fuses by electric heat welding in two ends of saving thermal insulation casings with thermal insulation casing.Electrical fusion joint normally is embedded in two electric heating wire the periphery of electrical fusion joint inboard, and the outside of the termination of electric heating wire being stretched out electrical fusion joint, the termination of two electric heating wire that will stretch out during use is screwed in together and directly is connected with power supply, to the electrical fusion joint heating, itself and thermal insulation casing are welded together.But heat is little because electric heating wire directly is connected with power supply, and heat is big greatly because of the electric current of its two ends to make electric heating wire, and the electric current of intermediate section is little for the electric fusion joint of this structure, causes electrical fusion joint and thermal insulation casing bonding inhomogeneous.And because of being formed with the part of hollow after the welding between two joint thermal insulation casings and the electrical fusion joint, the welding of this hollow part is also insecure.Also, also caused welding insecure because the thickness of two sides of electrical fusion joint formation overlap joint is identical.
The model utility content
Technical problem to be solved in the utility model is, a kind of homogeneous heating is provided, and electric heat welding headgear and thermal insulation casing welding are firm, and the welding area is big, the thermal insulation pipe electric heat welding headgear that the hollow part welding is firm.
The technological scheme that the utility model adopted is: a kind of thermal insulation pipe electric heat welding headgear, include: when melting welding, form axially and the electric heat welding headgear of longitudinal ream and the wire of fixedly embedded electric heat welding headgear inner peripheral wall, electrical fusion joint puts and has cable-through hole, wire is connected with the power lead that runs through cable-through hole by terminal board, and electrical fusion joint puts the support block spiral shell that also has and support electric heat welding headgear hollow part and links the support block screw that connects.
The utility model is connected in parallel on many wire on the terminal board owing to adopt said structure, has the wire conduction evenly, makes all seam crossings form a closed loop synchronously in heating process simultaneously, has improved the tightness of joint.Therefore, electric heat welding headgear homogeneous heating and heating area are big, and rate of heating is fast, and electric heat welding headgear and thermal insulation casing welding are firm, and there is not welding stress in electric heat welding headgear hollow part good rigidly and bonding firm in its fusion place.
Description of drawings
Fig. 1 is the inner peripheral surface structural representation that electric heat welding headgear of the present utility model launches;
Fig. 2 is the outer circumferential face structural representation that electric heat welding headgear of the present utility model launches;
Fig. 3 is that the A of Fig. 2 is to schematic representation;
Fig. 4 is that the B of Fig. 2 is to schematic representation;
Fig. 5 is that the C of Fig. 2 is to schematic representation;
Fig. 6, Fig. 7 are the support blocks of electric heat welding headgear of the present utility model;
Fig. 8 is the schematic representation after electric heat welding headgear of the present utility model and the thermal insulation casing welding;
Fig. 9 is the A-A sectional view of Fig. 8;
Figure 10 is the B-B sectional view of Fig. 8.
Wherein:
1: steel pipe 2: outer sleeve
3: electric heat welding headgear 4: power lead
5: thermal insulation layer 6: support block
7: wire 8: cable-through hole
9: terminal board 10: the support block screw
11: take mouthful inclined-plane 12: retaining screw
13: support block base 14: weld seam
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.
As shown in Figure 1, thermal insulation pipe electric heat welding headgear, include: when melting welding, form axially and the electric heat welding headgear 3 of longitudinal ream 14 and the wire 7 of fixedly embedded electric heat welding headgear 3 inner peripheral surface peripheries, have cable-through hole 8 on the electric heat welding headgear 3, wire 7 is connected with the power lead 4 that runs through cable-through hole 8 by terminal board 9, its wire 7 is provided with the connection that is in parallel more than 3, and wire 7 is a sinusoidal shape.Many wire are connected in parallel on the terminal board 9, have guaranteed conduction evenly, homogeneous heating.Support block 6 spiral shells that also have and support electric heat welding headgear 3 on the electric heat welding headgear 3 link the support block screw 10 that connects.
As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, electric heat welding headgear 3 forms weld seam 14 with the melting welding of the dual-side overlaid of electric heat welding headgear 3 overlap joint when melting welding, the two ends of a side in the dual-side of its overlaid overlap joint be ramp shaped take mouthful inclined-plane 11.Promptly only on the face of weld of electric heat welding headgear 3, form inclined-plane 10, and taking mouthful former pipe thickness of place's maintenance joints sleeve 3, increased the rigidity at electric heat welding headgear 3 middle parts.
As Fig. 6, shown in Figure 7, support block 6 be by with electric heat welding headgear 3 on support block screw 10 spiral shells link the retaining screw 12 that connects, and the support block base that links to each other with retaining screw 12 one 13 constitutes.As shown in figure 10, support block 6 is arranged in the hollow position of lap-joint of electric heat welding headgear 3, has guaranteed the reliability of its hollow part weld bond.
When the utility model is installed at the construction field (site), at first the steel pipe that two joints are exposed on the thermal insulation pipes is by being weldingly connected, and then the use material electric heat welding headgear identical with thermal insulation casing wraps the end at two joint thermal insulation casings, and the retaining screw that will support the support block upper end of electric heat welding headgear is screwed in the inboard support block screw that is provided with of electric heat welding headgear, make the dual-side overlaid overlap joint of electric heat welding headgear, give the wire that is positioned at electric heat welding headgear inner circle wall periphery energising by power lead and terminal board, the periphery of electric heat welding headgear is heated, thereby electric heat welding headgear and thermal insulation casing are welded together, and then make successively the thermal insulation pipe formation heat supply pipeline that fuses.
Claims (5)
1. thermal insulation pipe electric heat welding headgear, include: when melting welding, form axially and the electric heat welding headgear (3) of longitudinal ream (14) and the wire (7) of fixedly embedded electric heat welding headgear (3) inner peripheral surface periphery, have cable-through hole (8) on the electric heat welding headgear (3), it is characterized in that, wire (7) is connected with the power lead that runs through cable-through hole (8) (4) by terminal board (9), and support block (6) spiral shell that also has and support electric heat welding headgear (3) on the electric heat welding headgear (3) links the support block screw (10) that connects.
2. thermal insulation pipe electric heat welding headgear according to claim 1 is characterized in that described wire (7) is provided with the connection that is in parallel more than 3, and wire (7) is a sinusoidal shape.
3. thermal insulation pipe electric heat welding headgear according to claim 1, it is characterized in that, described support block (6) be by with electric heat welding headgear (3) on support block screw (10) spiral shell link the retaining screw (12) that connects, and the support block base (13) that links to each other with retaining screw (12) one constitutes.
4. thermal insulation pipe electric heat welding headgear according to claim 1, it is characterized in that, described electric heat welding headgear (3) is when melting welding, the melting welding of the dual-side overlaid of electric heat welding headgear (3) overlap joint is formed weld seam (14), the two ends of a side in the dual-side of its overlaid overlap joint be ramp shaped take a mouthful inclined-plane (11).
5. thermal insulation pipe electric heat welding headgear according to claim 1 is characterized in that, described support block (6) is arranged in the hollow position of lap-joint of electric heat welding headgear (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029590 CN2727532Y (en) | 2004-08-23 | 2004-08-23 | Electrothermal molten coupler cover for insulating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029590 CN2727532Y (en) | 2004-08-23 | 2004-08-23 | Electrothermal molten coupler cover for insulating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2727532Y true CN2727532Y (en) | 2005-09-21 |
Family
ID=35043546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029590 Expired - Fee Related CN2727532Y (en) | 2004-08-23 | 2004-08-23 | Electrothermal molten coupler cover for insulating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2727532Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451426C (en) * | 2007-04-25 | 2009-01-14 | 钟世全 | Low-carbon steel heating wire PE electric melting pipe fittings |
| CN107270009A (en) * | 2017-08-08 | 2017-10-20 | 浙江海祖管业有限公司 | A kind of PE pipelines saddle type electric melting connection piece and preparation method thereof |
-
2004
- 2004-08-23 CN CN 200420029590 patent/CN2727532Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451426C (en) * | 2007-04-25 | 2009-01-14 | 钟世全 | Low-carbon steel heating wire PE electric melting pipe fittings |
| CN107270009A (en) * | 2017-08-08 | 2017-10-20 | 浙江海祖管业有限公司 | A kind of PE pipelines saddle type electric melting connection piece and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |