CN201904925U - Organic and inorganic double-layer sealing structure for metal tubular electric heating element pipe opening - Google Patents
Organic and inorganic double-layer sealing structure for metal tubular electric heating element pipe opening Download PDFInfo
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- CN201904925U CN201904925U CN2010206820764U CN201020682076U CN201904925U CN 201904925 U CN201904925 U CN 201904925U CN 2010206820764 U CN2010206820764 U CN 2010206820764U CN 201020682076 U CN201020682076 U CN 201020682076U CN 201904925 U CN201904925 U CN 201904925U
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Abstract
The utility model discloses an organic and an inorganic double-layer sealing structure for an metal tubular electric heating element pipe opening, which consists of an inorganic layer and an organic layer, wherein the inorganic layer is sintered and cured on the inner wall of an electric heating element sleeve pipe opening, and the organic layer is coated on the outer side of the inorganic layer. The organic and inorganic double-layer sealing structure solves the problem of reduced insulation resistance because the electric heating element pipe opening can not be completely sealed, through the adoption of the double-layer structure with the combination of the inorganic layer and the organic layer, the characteristic that the heat expansion factor of inorganic materials is similar to the heat expansion factor of heating pipe materials can be used, and the characteristics of good elasticity and good sealing performance of organic materials can also be sufficiently utilized, so good sealing performance is integrally reached, meanwhile, the product quality is also improved, the service life of an electric heating element is obviously prolonged, the normal operation of large-size equipment using electric heating elements is ensured, the fault occurrence rate of equipment is further reduced, and the safety is also further improved.
Description
Technical field
The utility model relates to the electrical heating elements of tubular metal, is specially a kind of two machine double-layer sealing structures of the tubular metal electrical heating elements mouth of pipe.
Background technology
Tubular electrical heating element is widely used in the electrical engineering, because the lectrothermal alloy wire of element internal must keep insulation with the outside, therefore need seal element.At present when electrical heating elements is sealed, mostly adopt organic or inorganic material direct sealing, wherein the organic material of Cai Yonging mostly is silicon rubber, but silicon rubber wears out after using a period of time easily, therefore the silicon rubber of sealing part is easy to generate crackle, can not keep combining closely with the metal mouth of pipe, can cause mouth of pipe moisture to enter like this, cause insulation resistance to descend; And because the working temperature of electrical heating elements is usually at 200-400 ℃, and the normal temperature of using of silicon rubber is about 250 ℃, and silicon rubber also is difficult to keep the effect of insulated enclosure under this condition of high temperature.Also have at present and adopt inorganic material that electrical heating elements is directly sealed, as enamel, but because inorganic material self fragility is big, elasticity is relatively poor, sealing effectiveness is undesirable, also causes seal failure easily.
The utility model content
At above-mentioned deficiency of the prior art, the purpose of this utility model is to solve the problem that tubular electrical heating element causes heating element to lose efficacy owing to seal failure, and provides a kind of ferrule the good tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures.
The technical solution of the utility model: the tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures is characterized in that the inorganic layer that is set on the electrical heating elements sleeve pipe mouth of pipe inwall by sintering constitutes with the organic layer that is coated on the described inorganic layer outside.
The sealed electrical heating element mouth of pipe fully after the two machine double-layer sealing structures of the present utility model encapsulation, inorganic layer be interior, and the coefficient of expansion approaching by itself and tubing is consistent with heating tubing under the condition of high temperature, breaks thereby prevent to seal; Described organic layer is at skin, and by its elasticity and sealing preferably, line up carries out second layer sealing, and can be able to combine with the mouth of pipe is complete, and simultaneously because the protection of outer field organic layer, the inorganic layer of internal layer has avoided because the fracture phenomena that fragility causes.
With respect to prior art, the utlity model has following beneficial effect:
Two machine double-layer sealing structures of the present utility model have solved the electrical heating elements mouth of pipe owing to can not seal the problem that causes insulation resistance to descend fully, by the double-decker that adopts inorganic layer and organic layer to combine, can utilize the thermal coefficient of expansion and the more approaching characteristics of heating tubing thermal coefficient of expansion of inorganic material, can make full use of the organic material good springiness again, the characteristic of good airproof performance, thereby comprehensively reach good sealing effectiveness, also improved product quality simultaneously, make obviously increase the useful life of electrical heating elements, ensured the normal operation of using the main equipment of electrical heating elements, and then having reduced the rate of breakdown of equipment, fail safe also further improves.
Description of drawings
Fig. 1 is the structure cutaway view of the utility model tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures.
Among the figure, 1-electrical heating elements, 2-inorganic layer, 3-organic layer, 4-sleeve pipe.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of two machine double-layer sealing structures of the tubular metal electrical heating elements mouth of pipe, comprise inorganic layer 2 and organic layer 3, the material of described inorganic layer 2 can be enamel, during making the mode of enamel by sintering is set on the mouth of pipe inwall of metal sleeve 4 of electrical heating elements 1, the mouth of pipe inwall place at described metal sleeve behind the sintering forms inorganic layer 2; The material of described organic layer 3 can be selected silicon rubber or epoxy resin for use, after finishing the making of inorganic layer 2, the silicon rubber or the epoxy resin that will be used to make organic layer 3 again are coated in inorganic layer 2, apply the back and just form organic layer 3 at the outer surface of inorganic layer 2, described organic layer 3 covers inorganic layer 2 fully.
The utility model is by the acting in conjunction of inorganic layer 2 and organic layer 3, reached good sealing function, solved for a long time that electrical heating elements seals difficult problem, and then provide better solution for equipment construction period such as nuclear power station and all long engineering project of element resting period.
Need to prove; above embodiment is only in order to illustrate the technical solution of the utility model but not the restriction technologies scheme; although the applicant has done detailed description with reference to preferred embodiment to the utility model; those of ordinary skill in the art is to be understood that; those are made amendment to technical solutions of the utility model or are equal to replacement; and do not break away from the aim and the scope of the technical program, all should be encompassed in the middle of the claimed scope of the utility model.
Claims (3)
1. the tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures is characterized in that, are set in the inorganic layer (2) on electrical heating elements (1) the sleeve pipe mouth of pipe inwall and the organic layer (3) that is coated on the described inorganic layer (2) constitutes by sintering.
2. the tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures according to claim 1 is characterized in that the material of described inorganic layer (2) is an enamel.
3. the tubular metal electrical heating elements mouth of pipe two machine double-layer sealing structures according to claim 1 is characterized in that the material of described organic layer (3) is silicon rubber or epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206820764U CN201904925U (en) | 2010-12-27 | 2010-12-27 | Organic and inorganic double-layer sealing structure for metal tubular electric heating element pipe opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206820764U CN201904925U (en) | 2010-12-27 | 2010-12-27 | Organic and inorganic double-layer sealing structure for metal tubular electric heating element pipe opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904925U true CN201904925U (en) | 2011-07-20 |
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ID=44275517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206820764U Expired - Lifetime CN201904925U (en) | 2010-12-27 | 2010-12-27 | Organic and inorganic double-layer sealing structure for metal tubular electric heating element pipe opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201904925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109561530A (en) * | 2018-12-12 | 2019-04-02 | 重庆金鸿电气工程有限公司 | A kind of critical heat flux density test Special electrical heating pipe and its manufacturing method |
-
2010
- 2010-12-27 CN CN2010206820764U patent/CN201904925U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109561530A (en) * | 2018-12-12 | 2019-04-02 | 重庆金鸿电气工程有限公司 | A kind of critical heat flux density test Special electrical heating pipe and its manufacturing method |
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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 |
Granted publication date: 20110720 |
|
| CX01 | Expiry of patent term |