CN204554200U - A kind of low-carbon steel heating wire PE electric melting pipe fittings - Google Patents
A kind of low-carbon steel heating wire PE electric melting pipe fittings Download PDFInfo
- Publication number
- CN204554200U CN204554200U CN201520261921.3U CN201520261921U CN204554200U CN 204554200 U CN204554200 U CN 204554200U CN 201520261921 U CN201520261921 U CN 201520261921U CN 204554200 U CN204554200 U CN 204554200U
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- Prior art keywords
- heating wire
- pipe fitting
- wire winding
- electric melting
- pipe fittings
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- Lining Or Joining Of Plastics Or The Like (AREA)
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Abstract
The utility model discloses a kind of low-carbon steel heating wire PE electric melting pipe fittings, causing because there is transition wire between two windings the problem that transition wire peripheral plastic overtemperature even burns for solving prior art.The utility model comprises PE pipe fitting and is compounded in the heating wire winding of PE pipe fitting inner wall, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal.Two separate heating wire windings that the utility model electric melting pipe fittings adopts, do not have transition wire between two heating wire windings, thus fundamentally eliminate peripheral plastic overtemperature because transition wire causes, damage the Welding Problems of even burning; Be specially adapted to heavy caliber PE electric melting pipe fittings.
Description
Technical field
The utility model belongs to electric melting pipe fittings technical field, relates to a kind of low-carbon steel heating wire PE electric melting pipe fittings specifically.
Background technique
Polyethylene (PE) pipeline welds (welding) property, (heat-melting butt-joint, electric smelting connection) easy to connect, splitting resistance, environmental protection, health, the advantage such as recyclable because it is unique and good, become the optimal selection of city gas transmission network, mesolow water pipe.Along with popularizing of PE pressure piping application, PE electric melting pipe fittings is with its easy construction, and the application that welding reliably obtains widely, particularly gas field use have been popularized, and also starts extensive use in water supply field.
Such as application number be 200820205745.1 utility model patent disclose a kind of electric melting pipe fittings, comprise pipe fitting, electric heating wire is provided with at pipe fitting inner wall, two latches are provided with at pipe fitting outer wall, copper pin is respectively arranged with in latch, the two ends of electric heating wire are connected respectively to corresponding copper pin, and one of them copper pin is also provided with the identification cap with pipe fitting welding parameter information; Electric heating wire is copper cash, and it is rectangular PE layer that this copper cash outer surface is coated with one deck seven cross section, is spirally arranged on the inwall of pipe fitting by the copper cash with PE layer, then on inwall, be provided with one deck PE layer.
Application number be 20102063353.2 utility model patent disclose a kind of electric melting pipe fittings, comprise sleeve, sleeve lining is embedded with helical electric heating wire, sleeve outer wall is provided with two protecting covers, the wiring terminal embedded in sleeve wall is placed in protecting cover, and the two ends of electric heating wire are connected respectively on wiring terminal, and sleeve has groove, bottom portion of groove is equipped with the observation post that a top flushes with groove mouth, and observation post becomes to be integrated with sleeve; Electric heating wire is 0.4 ± 0.1mm from the distance of sleeve lining; Protecting cover is also stamped protective hat; Electric heating wire is copper wire; Electric heating wire is Contra wire.
Application number be 201110337599.4 patent of invention disclose a kind of electric melting pipe fittings containing electric heating wire and manufacture method thereof, comprise copper electrode, metallic shim, resistance wire, copper insert, lining framework, electrode protection cover, peep hole block, peep hole post, main pipe body, the resistance wire in copper electrode connection pipe fitting and external electro-fusion welding machine; Metallic shim is compressed on resistance wire, and makes resistance wire be electrically connected copper electrode; Resistance wire is embedded in the outside of lining framework, heating power during for welding, and melts the face of weld of tubing, part, reaches welding effect, be electric heating wire; Copper insert embeds in lining framework, by screw-thread fit, is fixed on by copper electrode on lining framework; Respectively there is a reeded wrapping wire region of length of tape at lining framework two ends, the width of groove is greater than be wound around resistance wire, the spacing of groove is identical, and the metallic shim that lining framework two ends are arranged and copper insert can will realize electrical connection reliably between resistance wire and copper electrode, guarantee the stable of pipe fitting electrical property.
Application number is that the patent of invention of 201210095121.X discloses a kind of heavy caliber electric melting pipe fittings, it comprises PE electric smelting pipe, PE electric smelting pipe is provided with thermal resistance wire and wiring terminal, the middle part load segment of PE electric smelting pipe be provided with pipe wall internal diameters from the circularity diminished gradually from two ends to centre correction section, the inwall in the neutral position of PE electric smelting pipe is provided with positive stop lug boss.
Application number be 201320303814.3 utility model patent disclose a kind of electric melting pipe fittings, comprise a main pipe body and some wiring terminals for electric fusion welding, main pipe body comprises a sidewall, and some wiring terminals are embedded in sidewall; The top end of wiring terminal is lower than the outer surface of sidewall; The quantity of wiring terminal is two, and those wiring terminals are located at the two ends of sidewall respectively; The inwall of main pipe body is formed with the resistance wire be electrically connected with wiring terminal; The outer surface at sidewall two ends is also formed with respectively one for inclined-plane conveniently stripped during injection moulding electric melting pipe fittings; Each inclined-plane is provided with a boss, and the outer surface of boss and the flush with outer surface of sidewall, wiring terminal is located in boss.
Application number be 201420265910.8 utility model patent disclose a kind of electric melting pipe fittings, it comprises the main pipe body of a hollow, some terminal be located in main pipe body, some wiring terminals, some resistance wires, wiring terminal is located in terminal, comprise the external part and a mounting end that are connected with each other, the bottom of mounting end is provided with an open ports, the bottom of open ports is provided with one along the axially extended straight hole of wiring terminal, the aperture of straight hole is less than the external diameter of resistance wire, one end of resistance wire and straight hole are interference fit, the top loop of mounting end is provided with some anti-pull-off projections.
PE electric melting pipe fittings is for connecting PE pipe, the heating wire of existing PE electric melting pipe fittings be all use sub-thread red copper wire to cross to mould rear evenly winding combined on pipe fitting, during welding PE pipe, PE pipe is inserted in PE electric melting pipe fittings, with welding equipment, copper cash is energized, under big current, utilize the heating of copper cash to melt PE pipe and PE electric melting pipe fittings surface of contact plastics, reach PE pipe and merge the object of welding with PE pipe fitting.
But adopt the PE electric melting pipe fittings of red copper wire to there is following problem: 1, copper cash high cost, specification is the red copper wire existing market price 7.6 ten thousand yuan/ton of 1 square millimeter, time the highest be 8.6 ten thousand yuan/ton, be processed into the mistake directly used and mould rear cost price at about 100,000 yuan/ton; Cause copper heating wire to account for 10-15% of overall cost in whole pipe fitting, make PE electric melting pipe fittings cost of production high, and due to heating wire be expendable consumed product, can not recycling in pipeline service life.2, red copper wire is crossed be moulded single line, because winding turns is many, between winding, spacing is less, after plastics are heated and melt, copper cash warpage, mobile all may cause turn-to-turn short circuit, and red copper wire elongation percentage is larger in high temperature environments, in heating process after buckling deformation, easily contact with adjacent winding and cause short circuit, cause whole pipe to weld unsuccessfully, considerably increase the unsuccessful rate of welding.3, the tensile strength of red copper wire is at 200-220N, and copper cash is easily broken in process of production, once rupture, causes product directly to be scrapped again.4, the current-carrying of red copper wire own is larger, produce the condition of same heat in energising under, using the single line winding of the red copper wire of 1 square millimeter will reach welding requirements needs welding machine to provide the electric current of 40A, just heating effect can be reached, add the production difficulty of welding equipment, also waste electric energy, power consumption is higher.
For the problems referred to above, application number be 20071009823.8 utility model patent disclose a kind of low-carbon steel heating wire PE electric melting pipe fittings, comprise PE pipe fitting and the heating wire being compounded in PE pipe fitting inner wall, heating wire is two low carbon steel heating wires arranged side by side, heating wire is through annealing softening, surface finish, multilayer copper facing corrosion protection, anti-oxidant treatment moulds filtration with crossing, cross and mould rear two heating wire uniform diameter side by side and be around in and be compound in PE pipe fitting inner wall, heating wire section area is 0.5-5 square millimeters, filtration treatment evenly wraps up 2-5 millimeters thick outward at arranged side by side two heating wires, the plastics identical with PE pipe fitting.
But, prior art also exists following problem, in prior art, two windings are all adopt transition wire to link together, during electrified regulation, transition wire and winding generate heat simultaneously, under big current effect, heating wire body temperature reaches more than 500 DEG C, after long-time, exposed transition wire will cause the serious overtemperature of its peripheral plastic even to burn, particularly for heavy caliber PE pipe fitting, more than winding spacing 150mm, the transition wire having more than 150mm length between two windings is exposed to pipe fitting inner wall on the surface, more easily cause the problem that the serious overtemperature of peripheral plastic even burns.
In prior art, owing to lacking heavy caliber electric melting pipe fittings, make the end face adopted between heavy caliber pipe and tubing to welding manner, this welding manner is only pipe thickness area due to its bonding area, thus cause bonding area too small and the stress that larger use pressure and pipe deforming produce cannot be born, thus also just determine its can only be applied in 1.0MPa pressure within low-pressure scope, also just determine its can only among a small circle in use.Low-carbon steel heating wire PE electric melting pipe fittings of the present utility model has filled up the blank about heavy caliber electric melting pipe fittings in prior art, bonding area does not limit by wall thickness, random lengths can be designed as required, ensure the join strength of heavy caliber pipe, thus make heavy caliber pipe can apply to more wide field.
And the low carbon steel heating wire that heating wire of the present utility model adopts, the tensile strength of low carbon steel heating wire is at 250-330N, and not easy-rupturing in process of production, reduces production cost, improve the application area of heavy caliber pipe simultaneously.
Preferably, the heating wire of described heating wire winding is two low carbon steel heating wires arranged side by side, due to two-wire winding arranged side by side, fewer than single line one times of the double-wound transformer number of same width, mild steel wire good thermal stability in addition, being heated at the same temperature, comparatively copper cash is low for elongation percentage, test proof can effectively reduce short circuit probability more than 80%, improves and is welded into power and welding useful area, reduce welding difficulty, be welded into power and can reach 99.9%, be especially more suitable for large and medium-sized pipe fitting and produce.
The utility model can be set to directly as required, threeway, elbow etc., those skilled in the art can understand and understand, and does not repeat them here.Accompanying drawing 1 of the present utility model is direct structural representation just.
Further, the heating wire of heating wire winding 2 of the present utility model is coated with the plastic layer of material identical with PE pipe fitting 1.
Preferably, the thickness after the heating wire coating plastic layer of described heating wire winding 2 is 2.2-2.5mm.
Preferably, the heating wire diameter of heating wire winding 2 is 1.5-1.7mm.
Model utility content
The utility model causes because there is transition wire between two windings the problem that transition wire peripheral plastic overtemperature even burns in order to solve prior art, and a kind of low-carbon steel heating wire PE electric melting pipe fittings is provided, adopt two groups of independently heating wire windings, there is no the design of transition wire, thus fundamentally eliminate the problem that the transition wire peripheral plastic overtemperature that causes because of transition wire even burns.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of low-carbon steel heating wire PE electric melting pipe fittings, comprise PE pipe fitting and be compounded in the heating wire winding of PE pipe fitting inner wall, it is characterized in that, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal.
The heating wire of described heating wire winding is two low carbon steel heating wires arranged side by side.
The heating wire of described heating wire winding is coated with the plastic layer of material identical with PE pipe fitting.
Thickness after the heating wire coating plastic layer of described heating wire winding is 2.2-2.5mm.
The heating wire diameter of described heating wire winding is 1.5-1.7mm.
Compared with prior art, the utility model has following beneficial effect:
Low-carbon steel heating wire PE electric melting pipe fittings of the present utility model, comprise the heating wire winding that PE pipe fitting is compounded in PE pipe fitting inner wall, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal.The heating wire winding that electric melting pipe fittings of the present utility model two of adopting are separate, does not have transition wire between two heating wire windings, thus fundamentally eliminates peripheral plastic overtemperature because transition wire causes, damages the Welding Problems of even burning.Be specially adapted to heavy caliber PE electric melting pipe fittings, because the transition wire of prior art Large diameter PE electric melting pipe fittings is longer, more easily cause the Welding Problems such as seepage, damage, burning.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment;
Mark in figure: 1, PE pipe fitting, 2, heating wire winding, 3, attachment post.
Embodiment
Below in conjunction with embodiment, the utility model will be further described, and described embodiment is only the utility model part embodiment, is not whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art, not making other embodiments used obtained under creative work prerequisite, belongs to protection domain of the present utility model.
By reference to the accompanying drawings, for the structural representation of the utility model one embodiment, low-carbon steel heating wire PE electric melting pipe fittings of the present utility model, comprise PE pipe fitting 1 and be compounded in the heating wire winding 2 of PE pipe fitting inner wall, described heating wire winding 2 comprises the heating wire winding 2 being separately positioned on PE pipe fitting 1 two ends, that is to say, the two ends of PE pipe fitting 1 are respectively arranged with a heating wire winding 2, the heating wire winding 2 at PE pipe fitting 1 two ends is separate, that is to say be arranged on PE pipe fitting 1 two ends heating wire winding 2 between do not linked together by transition wire, the two ends of each heating wire winding 2 are all connected with wiring terminal 3.The heating wire winding that electric melting pipe fittings of the present utility model two of adopting are separate, does not have transition wire between two heating wire windings, thus fundamentally eliminates peripheral plastic overtemperature because transition wire causes, damages the Welding Problems of even burning.Be specially adapted to heavy caliber PE electric melting pipe fittings, because the transition wire of prior art Large diameter PE electric melting pipe fittings is longer, more easily cause the Welding Problems such as seepage, damage, burning.
For the structural design of attachment post 3 and the connection of attachment post 3 and heating wire winding 2, those skilled in the art can understand and understand, and does not repeat them here.
Embodiment one
The low-carbon steel heating wire PE electric melting pipe fittings of the present embodiment, comprise PE pipe fitting and be compounded in the heating wire winding of PE pipe fitting inner wall, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal.
Embodiment two
The low-carbon steel heating wire PE electric melting pipe fittings of the present embodiment, comprise PE pipe fitting and be compounded in the heating wire winding of PE pipe fitting inner wall, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal; The heating wire of described heating wire winding is two low carbon steel heating wires arranged side by side.
Embodiment three
The low-carbon steel heating wire PE electric melting pipe fittings of the present embodiment, comprise PE pipe fitting and be compounded in the heating wire winding of PE pipe fitting inner wall, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal; The heating wire of described heating wire winding is two low carbon steel heating wires arranged side by side; The heating wire of described heating wire winding is coated with the plastic layer of material identical with PE pipe fitting.
Embodiment four
On the basis of embodiment three, the thickness after the heating wire coating plastic layer of the heating wire winding of the present embodiment is 2.2-2.5mm.
Embodiment five
On the basis of above-mentioned any embodiment, the heating wire diameter of the heating wire winding of the present embodiment is 1.5-1.7mm.
Claims (5)
1. a low-carbon steel heating wire PE electric melting pipe fittings, comprise PE pipe fitting and be compounded in the heating wire winding of PE pipe fitting inner wall, it is characterized in that, described heating wire winding comprises the heating wire winding being separately positioned on PE pipe fitting two ends, the heating wire winding at PE pipe fitting two ends is separate, and the two ends of each heating wire winding are all connected with wiring terminal.
2. low-carbon steel heating wire PE electric melting pipe fittings according to claim 1, is characterized in that, the heating wire of described heating wire winding is two low carbon steel heating wires arranged side by side.
3. low-carbon steel heating wire PE electric melting pipe fittings according to claim 1 and 2, is characterized in that, the heating wire of described heating wire winding is coated with the plastic layer of material identical with PE pipe fitting.
4. low-carbon steel heating wire PE electric melting pipe fittings according to claim 3, is characterized in that, the thickness after the heating wire coating plastic layer of described heating wire winding is 2.2-2.5mm.
5. low-carbon steel heating wire PE electric melting pipe fittings according to claim 4, is characterized in that, the heating wire diameter of described heating wire winding is 1.5-1.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261921.3U CN204554200U (en) | 2015-04-28 | 2015-04-28 | A kind of low-carbon steel heating wire PE electric melting pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261921.3U CN204554200U (en) | 2015-04-28 | 2015-04-28 | A kind of low-carbon steel heating wire PE electric melting pipe fittings |
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| Publication Number | Publication Date |
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| CN204554200U true CN204554200U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520261921.3U Expired - Fee Related CN204554200U (en) | 2015-04-28 | 2015-04-28 | A kind of low-carbon steel heating wire PE electric melting pipe fittings |
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| CN (1) | CN204554200U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806839A (en) * | 2015-04-28 | 2015-07-29 | 成都市团结模具制造厂 | Low carbon steel heating wire PE (polyethylene) electric melt pipe fitting |
| CN109027490A (en) * | 2018-08-29 | 2018-12-18 | 浙江伟星新型建材股份有限公司 | It is a kind of for connecting the electric melting pipe fittings of unlike material tubing |
| CN113300293A (en) * | 2021-05-14 | 2021-08-24 | 陈扬仕 | MPP cable pipe convenient to butt fusion installation |
-
2015
- 2015-04-28 CN CN201520261921.3U patent/CN204554200U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806839A (en) * | 2015-04-28 | 2015-07-29 | 成都市团结模具制造厂 | Low carbon steel heating wire PE (polyethylene) electric melt pipe fitting |
| CN109027490A (en) * | 2018-08-29 | 2018-12-18 | 浙江伟星新型建材股份有限公司 | It is a kind of for connecting the electric melting pipe fittings of unlike material tubing |
| CN113300293A (en) * | 2021-05-14 | 2021-08-24 | 陈扬仕 | MPP cable pipe convenient to butt fusion installation |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20170428 |