CN201688073U - Variable-pitch electric heat wire distributed electric-melting pipe - Google Patents
Variable-pitch electric heat wire distributed electric-melting pipe Download PDFInfo
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- CN201688073U CN201688073U CN2010202086451U CN201020208645U CN201688073U CN 201688073 U CN201688073 U CN 201688073U CN 2010202086451 U CN2010202086451 U CN 2010202086451U CN 201020208645 U CN201020208645 U CN 201020208645U CN 201688073 U CN201688073 U CN 201688073U
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- melting pipe
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Abstract
The utility model provides a variable-pitch electric heat wire distributed electric-melting pipe, comprising a joint main body, a heating resistance wire buried in the internal wall of the joint main body, and an observing hole and a wiring end which expose out of the joint main body and are respectively positioned at two ends of the joint main body, wherein the terminal is internally provided with a metal wiring terminal; the heating resistance wire is connected with the wiring terminal; the region in which the heating resistance wire is buried is a welding area; and the pitch of the resistance wires at two end parts of the welding area is less than that of the resistance wire of the middle part thereof. In the utility model, the design of variable pitch at the welding area is adopted, therefore, the lost heat at two sides of the welding area of the electric-melting pipe can be compensated, the length of the welding area can be increased effectively, the welding strength of the electric-melting pipe can be improved, the welding quality of the electric-melting pipe can be ensured, and the use safety of the buried pipelines is further improved.
Description
Technical field
The utility model relates to the buried pipeline field, particularly a kind ofly is used to feed water, the electric melting pipe fittings of buried pipeline among the municipal engineering such as combustion gas.
Background technique
At present, the pipeline that be used to feed water, buried pipeline all adopts plastic material mostly among the municipal engineering such as combustion gas.And plastic electrofusion link (abbreviation electric melting pipe fittings) has become a known technology.Electric melting pipe fittings comprises: adapter body is embedded in the heating resistance wire of adapter body inwall, and exposes adapter body and be positioned at the peep hole and the terminal at adapter body two ends.Wherein, the inside of terminal is provided with metal wiring terminal, and heating resistance wire links to each other with wiring terminal.Concrete, peep hole is used to observe welding effect.Wiring terminal is used for connecting the both positive and negative polarity of welding equipment.Heating resistance wire generates heat in welding process, with molten plastic pipe fitting and tubing.
At present, the existing complete twist or big portion of heating resistance wire that is embedded in the adapter body inwall embeds the adapter body inwall.Resistance wire is distributed in the left and right sides with the adapter body axial centre in the face of title.One-sided different, be divided into outside transition zone, the middle welding zone that is embedded with heating resistance wire and three big zones, inner transition district by effect.Wherein, heating resistance wire in the middle welding zone is uniform pitch and distributes, owing to be subjected to this structural limitations, the middle part and the two end part heat transfer performance of middle welding zone have very big difference, cause the middle part and the temperature at two end part that very big drop is arranged, cause the actual welding zone not enough, cause the not enough hidden danger of quality of weld strength.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned prior art, a kind of variable pitch electric heating wire distribution electric melting pipe fittings is provided, the hidden danger of quality that this electric melting pipe fittings can effectively avoid excessive temperature differentials to bring can improve weld strength, makes that the Security of buried pipeline is better.
The technological scheme taked of the utility model is to achieve these goals: a kind of variable pitch electric heating wire distribution electric melting pipe fittings, comprise adapter body, be embedded in the heating resistance wire of adapter body inwall, and expose adapter body and be positioned at the peep hole and the terminal at adapter body two ends, the inside of terminal is provided with metal wiring terminal, heating resistance wire links to each other with wiring terminal, wherein, the zone that is embedded with heating resistance wire is the welding zone, the resistance wire pitch at the two end part of described welding zone is less than the resistance wire pitch at middle part, be that two end part are close, the distribution form that dredge at the middle part, strengthen the welding heat of fringe area, two end part thus, thereby the compensation two end part are because rapid heat dissipation and temperature disadvantage on the low side, thereby effectively increased the length of welding zone, improve the intensity of welding greatly, guaranteed the welding quality of electric melting pipe fittings, further guaranteed the Security of buried pipeline.
Concrete, being shaped as of described electric melting pipe fittings is straight-through, reducing, elbow or threeway.
The beneficial effects of the utility model are: compared to existing technology, the utility model has adopted the design that changes in described welding zone pitch, can compensate both sides, electric melting pipe fittings welding zone dissipated heat, effectively increase welding zone length, improved the weld strength of electric melting pipe fittings, guarantee the welding quality of electric melting pipe fittings, further improved the safety in utilization of buried pipeline.
Description of drawings
Fig. 1 is the overall structure schematic representation of electric melting pipe fittings described in the utility model;
Fig. 2 is the enlarged diagram of the distribution of heating resistance wire described in Fig. 1.
Among the figure: 1 adapter body, 2 heating resistance wires, 3 peep holes, 4 wiring terminals, 5 terminal, A outside transition zone, welding zone in the middle of the B, welding zone, B1 end, welding zone, B2 middle part, C inner transition district.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As shown in Figures 1 and 2, variable pitch electric heating wire distribution electric melting pipe fittings described in the utility model straight-throughly with electric smelting in this example is example but is not limited thereto that described electric melting pipe fittings can also be electric smelting reducing, electric smelting elbow or electric smelting threeway.Be shaped as the electric melting pipe fittings of main body with reducing, elbow, threeway etc., they are the distortion pattern of straight-through main body pipe fitting, and embedded resistance wire intermediate transition zone is with the transition of electric melting pipe fittings shape nature, and welding zone, both sides structure is identical with straight-through class electric melting pipe fittings.
As shown in Figure 1, described electric melting pipe fittings comprises adapter body 1, is embedded in the heating resistance wire 2 of adapter body 1 inwall and exposes adapter body 1 and be positioned at the peep hole 3 and the terminal 5 at adapter body 1 two ends, the inside of terminal 5 is provided with metal wiring terminal 4, and heating resistance wire 2 links to each other with wiring terminal 4.Wherein, adapter body 1 is made for plastics.Heating resistance wire 2 materials are copper wire, and it embeds adapter body 1 inwall twist completely.Heating resistance wire 2 also can most ofly embed adapter body 1 inwall during concrete enforcement, and material can be selected Cuprum alloy or other wire for use.
As shown in Figure 2, heating resistance wire 2 is distributed in the left and right sides with the electric melting pipe fittings axial centre in the face of title.One-sided different by effect, distributed areas are divided into outside transition zone A, middle welding zone B and inner transition district C three big zones.Concrete, be to be embedded with heating resistance wire 2 at middle welding zone B.And at middle welding zone B, be further divided into two ends welding zone B1 and one middle part welding zone B2 totally three sub regions, wherein in the resistance wire pitch in B1 territory, welding zone, two ends pitch less than welding zone, middle part B2, be close, the middle distribution forms of dredging in both sides, strengthen the welding heat in both sides of the edge district thus, thereby the compensation both sides are because rapid heat dissipation and temperature disadvantage on the low side, thereby guaranteed the temperature equalization of pipe fitting welding zone, strengthened weld strength, improved the welding quality of electric melting pipe fittings product, the Security that has further improved buried pipeline.
Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (2)
1. variable pitch electric heating wire distribution electric melting pipe fittings, comprise adapter body, be embedded in the heating resistance wire of adapter body inwall, and expose adapter body and be positioned at the peep hole and the terminal at adapter body two ends, the inside of terminal is provided with metal wiring terminal, and heating resistance wire links to each other with wiring terminal, wherein, the zone that is embedded with heating resistance wire is the welding zone, it is characterized in that: the resistance wire pitch at the two end part of described welding zone is less than the resistance wire pitch at middle part.
2. electric melting pipe fittings according to claim 1 is characterized in that: being shaped as of described electric melting pipe fittings is straight-through, reducing, elbow or threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202086451U CN201688073U (en) | 2010-05-26 | 2010-05-26 | Variable-pitch electric heat wire distributed electric-melting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202086451U CN201688073U (en) | 2010-05-26 | 2010-05-26 | Variable-pitch electric heat wire distributed electric-melting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201688073U true CN201688073U (en) | 2010-12-29 |
Family
ID=43376353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202086451U Expired - Fee Related CN201688073U (en) | 2010-05-26 | 2010-05-26 | Variable-pitch electric heat wire distributed electric-melting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201688073U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542231A (en) * | 2013-10-17 | 2014-01-29 | 王辉 | Energy-saving heat-insulation device of gas delivery system |
| CN109140103A (en) * | 2018-09-05 | 2019-01-04 | 浙江伟星新型建材股份有限公司 | A kind of Fuse Type electric melting pipe fittings |
| CN110360401A (en) * | 2019-04-25 | 2019-10-22 | 优捷特环保科技有限公司 | Flank pillar electric melting pipe fittings |
| CN113276433A (en) * | 2021-05-24 | 2021-08-20 | 浙江工商大学 | Large-diameter PE electric melting pipe fitting structure and size and welding process parameter setting method |
-
2010
- 2010-05-26 CN CN2010202086451U patent/CN201688073U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542231A (en) * | 2013-10-17 | 2014-01-29 | 王辉 | Energy-saving heat-insulation device of gas delivery system |
| CN103542231B (en) * | 2013-10-17 | 2017-01-25 | 王辉 | Energy-saving heat-insulation device of gas delivery system |
| CN109140103A (en) * | 2018-09-05 | 2019-01-04 | 浙江伟星新型建材股份有限公司 | A kind of Fuse Type electric melting pipe fittings |
| CN110360401A (en) * | 2019-04-25 | 2019-10-22 | 优捷特环保科技有限公司 | Flank pillar electric melting pipe fittings |
| CN113276433A (en) * | 2021-05-24 | 2021-08-20 | 浙江工商大学 | Large-diameter PE electric melting pipe fitting structure and size and welding process parameter setting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20190526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |