CN202979319U - Seal structure capable of improving the electrical properties of electric heating tube - Google Patents
Seal structure capable of improving the electrical properties of electric heating tube Download PDFInfo
- Publication number
- CN202979319U CN202979319U CN 201220541230 CN201220541230U CN202979319U CN 202979319 U CN202979319 U CN 202979319U CN 201220541230 CN201220541230 CN 201220541230 CN 201220541230 U CN201220541230 U CN 201220541230U CN 202979319 U CN202979319 U CN 202979319U
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- metal external
- outer pipe
- electric heating
- metal outer
- tube
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Abstract
The utility model provides a seal structure capable of improving the electrical properties of an electric heating tube, which relates to the technical field of electric heating components. The seal structure includes a metal external tube and a leading out rod arranged in the metal external tube, wherein one end of the leading out rod is connected with a heating wire and the other end of the leading out rod extends outside a port of the metal external tube, an insulation filler is arranged between the leading out rod and the metal external tube, a metal external tube end is near to the port of the metal external tube, a first seal layer is arranged between the leading out rod and the metal external tube end, a second seal layer is arranged between the first seal layer in the metal external tube and the insulation filler, the metal external end and the first seal layer are in interference fit in a conical shape, and the first seal layer extends outside the port of the metal external tube. The seal structure solves the technical problems of the prior art that the seal layers of the electric heating tube easily absorb the moisture in the damp environment, resulting into insulation degradation. The seal structure has the following beneficial effects: the structure is simple and reasonable, the manufacture cost is low; the electric heating tube is subjected to double protection by the two seal layers, the insulation performance of the electric heating tube is not reduced, and the safe use of the electric heating tube is ensured.
Description
Technical field
The utility model relates to a kind of technical field of electric heating parts, especially relates to a kind of hermetically-sealed construction of electric heating tube port.
Background technology
Electrothermal tube is widely used in the fields such as household electrical appliances, industrial equipment with its good heat conductivility.The electrothermal tube that generally adopts at present is the tubular metal electrothermal tube.The tubular metal electrothermal tube is made of heater, Insulation stopping, metallic sheath pipe and ejector.The end construction of tubular metal electrothermal tube is poorly sealed close, can cause the insulation resistance of electric heating element to descend, and this is directly connected to the use safety of electrothermal tube.Chinese patent Granted publication CN202261849U, on May 30 2012 Granted publication date, name is called the utility model patent of " end moisture-proof structure of electrothermal tube ", the end moisture-proof structure of disclosed a kind of electrothermal tube.It comprises outer tube and the eduction rod that stretches out from the outer tube end.Be filled with magnesia powder in outer tube.The end portion encloses of outer tube has sealing layer.Be provided with damp-proof layer between sealing layer and magnesia powder.The encapsulating method that this utility model patent adopts can not guarantee the insulation property of electrothermal tube, thus especially under the environment of humidity the easy moisture absorption of electrothermal tube cause that insulation descends, and exists certain potential safety hazard.
Summary of the invention
In prior art, the easy moisture absorption of electrothermal tube sealing layer causes that insulation descends in order to solve, and has the technical problem of potential safety hazard, and the utility model provides a kind of electrothermal tube sealing mode that seals densification, guarantees good insulating performance.
the technical solution of the utility model is: a kind of enclosuring structure that improves the electrothermal tube electrical property, it comprises metal outer pipe, be provided with eduction rod in metal outer pipe, one end of eduction rod is connected with heating wire, the other end of eduction rod stretches out the metal outer pipe port, be provided with Insulation stopping between eduction rod and metal outer pipe, metal outer pipe is the metal outer pipe end near the port, be provided with the first sealing layer between eduction rod and metal outer pipe end, be provided with the second sealing layer between the first sealing layer and Insulation stopping in metal outer pipe, the metal outer pipe end is coniform, metal outer pipe end and the first sealing layer interference fit, the first sealing layer stretches out the metal outer pipe port, guaranteed the creepage distance of electric heating element.The metal outer pipe end is done in order to reducing mode and the first sealing layer interference fit by mechanical external force, and isolated extraneous air enters electrothermal tube inside effectively.
As preferably, the first sealing layer is that polytetrafluoroethylene is hollow cylindrical; Good insulating, high temperature resistant, be difficult for the moisture absorption, long term exposure remains unchanged in the atmosphere performance; Plasticity is good, combines closely with it after metal outer pipe end reducing, has guaranteed that the first sealing layer is reliable.
Compared with prior art, the beneficial effects of the utility model are: simple and reasonable, and low cost of manufacture; Sealing is fine and close, at high temperature still can guarantee good insulation property; The twice sealing layer plays double protection to electrothermal tube inside, guarantees that better the electrothermal tube insulation property can not descend, and guarantees that electrothermal tube uses safety.
Description of drawings
In figure: the 1-eduction rod; 2-the first sealing layer; The 3-metal outer pipe; 4-the second sealing layer; The 5-Insulation stopping; The 6-heating wire; 31-metal outer pipe end.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of enclosuring structure that improves the electrothermal tube electrical property, it comprises metal outer pipe 3, and metal outer pipe 3 is stainless steel tube, is provided with eduction rod 1 in metal outer pipe 3, and eduction rod 1 is metallic conduction structure.One end of eduction rod 1 is connected with heating wire 6, and the other end of eduction rod 1 stretches out metal outer pipe 3 ports.Be provided with Insulation stopping 5 between eduction rod 1 and metal outer pipe 3, Insulation stopping 5 is insulating oxide magnesium powder.Metal outer pipe 3 is metal outer pipe end 31 near the port, and metal outer pipe end 31 is coniform.Be provided with the first sealing layer 2, the first sealing layers 2 between eduction rod 1 and metal outer pipe end 31 and be hollow cylindrical for polytetrafluoroethylene.Be provided with methyl-silicone oil and the magnesia powder polymer architecture that the second sealing layer 4, the second sealing layers 4 form for high temperature polymerization between the first sealing layer 2 and Insulation stopping 5 in metal outer pipe 3.Metal outer pipe end 31 and the first sealing layer 2 interference fit, the first sealing layer 2 stretches out metal outer pipe 3 ports.The center of columned the first sealing layer 2 is hollow-core construction vertically.By the mechanical external force effect, metal outer pipe end 31 reducings, the inwall of the first sealing layer 2 and eduction rod 1 interference fit, the inwall interference fit of the outer wall of the first sealing layer 2 and metal outer pipe end 31.The present embodiment the first sealing layer 2 stretches out four millimeters of metal outer pipe 3 ports.
Claims (2)
1. enclosuring structure that improves the electrothermal tube electrical property, it comprises metal outer pipe (3), be provided with eduction rod (1) in metal outer pipe (3), one end of eduction rod (1) is connected with heating wire (6), the other end of eduction rod (1) stretches out described metal outer pipe (3) port, be provided with Insulation stopping (5) between eduction rod (1) and metal outer pipe (3), it is characterized in that: described metal outer pipe (3) is metal outer pipe end (31) near the port, be provided with the first sealing layer (2) between eduction rod (1) and metal outer pipe end (31), be provided with the second sealing layer (4) between the first sealing layer (2) and Insulation stopping (5) in metal outer pipe (3), described metal outer pipe end (31) is coniform, metal outer pipe end (31) and the first sealing layer (2) interference fit, described the first sealing layer (2) stretches out described metal outer pipe (3) port.
2. a kind of enclosuring structure that improves the electrothermal tube electrical property according to claim 1, it is characterized in that: described the first sealing layer (2) is hollow cylindrical for polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541230 CN202979319U (en) | 2012-10-22 | 2012-10-22 | Seal structure capable of improving the electrical properties of electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541230 CN202979319U (en) | 2012-10-22 | 2012-10-22 | Seal structure capable of improving the electrical properties of electric heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979319U true CN202979319U (en) | 2013-06-05 |
Family
ID=48520334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541230 Expired - Lifetime CN202979319U (en) | 2012-10-22 | 2012-10-22 | Seal structure capable of improving the electrical properties of electric heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979319U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853457A (en) * | 2015-05-07 | 2015-08-19 | 华能无锡电热器材有限公司 | Sealing structure of electric heating pipe and processing method |
| CN104994607A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Positive-temperature-coefficient-thermistor electric heater |
| CN105072713A (en) * | 2015-09-08 | 2015-11-18 | 湖州思创电热科技有限公司 | Heating pipe high temperature-resistant sealing structure and operation method |
| CN109379791A (en) * | 2018-10-29 | 2019-02-22 | 安徽苏立科技股份有限公司 | A kind of electric heating pipe processing technique |
| CN111203922A (en) * | 2020-02-24 | 2020-05-29 | 合肥晞隆光电有限公司 | Method and cutter for excavating insulating filler in electric heating pipe |
-
2012
- 2012-10-22 CN CN 201220541230 patent/CN202979319U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853457A (en) * | 2015-05-07 | 2015-08-19 | 华能无锡电热器材有限公司 | Sealing structure of electric heating pipe and processing method |
| CN104994607A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Positive-temperature-coefficient-thermistor electric heater |
| CN105072713A (en) * | 2015-09-08 | 2015-11-18 | 湖州思创电热科技有限公司 | Heating pipe high temperature-resistant sealing structure and operation method |
| CN109379791A (en) * | 2018-10-29 | 2019-02-22 | 安徽苏立科技股份有限公司 | A kind of electric heating pipe processing technique |
| CN111203922A (en) * | 2020-02-24 | 2020-05-29 | 合肥晞隆光电有限公司 | Method and cutter for excavating insulating filler in electric heating pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |