CN203399310U - Double-wall heating pipe - Google Patents
Double-wall heating pipe Download PDFInfo
- Publication number
- CN203399310U CN203399310U CN201320495337.5U CN201320495337U CN203399310U CN 203399310 U CN203399310 U CN 203399310U CN 201320495337 U CN201320495337 U CN 201320495337U CN 203399310 U CN203399310 U CN 203399310U
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- Prior art keywords
- outer tube
- tube
- double
- wall heating
- insulating plug
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- Expired - Fee Related
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Abstract
The utility model discloses a double-wall heating pipe, which comprises electrodes, a heating element and an outer pipe, wherein the electrodes are arranged at two ends of the outer pipe respectively, and the heating element is arranged in the outer pipe and electrically connected with the electrodes; and the outer pipe is sleeved with a pipe body contacted with the wall of the outer pipe. The structure disclosed by the utility can enable the heating pipe to be more uniform in heating.
Description
Technical field
The utility model relates to heating tube.
Background technology
Nowadays, the range of application of electric heating tube very extensively, utilize electric heating tube can be direct or indirect liquid is heated.
Present heating tube is mainly comprised of electrode, heating wire and stainless steel tube, and the heating tube of this structure has been owing to having adopted stainless steel tube, therefore, good welding performance when heating tube and rustless steel container welding, the fastness of connection is good.But in use find, the stainless steel tube of individual layer can cause tube wall heat inhomogeneous, particularly, after a part of stainless steel tube is immersed in water, the part of immersion can not redden very soon, therefore, can affect the quality of heating.
Summary of the invention
In order to make heating tube heating more even, the utility model provides a kind of double-layer tube wall heating tube.
For achieving the above object, a kind of double-layer tube wall heating tube, comprises electrode, heater element and outer tube, and electrode is located at the two ends of outer tube, and heater element is established within the outer tube and is electrically connected with electrode; On outer tube, cover has the body contacting with outer tube wall.
Said structure, when heating tube is when working, the heat of heater element is first delivered on outer tube, and a part of heat is delivered on body after transfers within the outer tube, another part heat is radially directly delivered on body within the outer tube, in body, heat also further transmits, like this, can make the heat on body even, thereby make working temperature even, to expand range of application, improve the quality of heating.
As improvement, at the two ends of outer tube, be respectively equipped with insulating plug, electrode is located on insulating plug, to improve the security performance of use.
As specializing, insulating plug is ledge structure; Described outer tube comprises outer tube body and necking end, the large end in contact of the inwall of outer tube body and insulating plug, the little end in contact of necking end and insulator.This structure can firmly be fixed on insulating plug on outer tube, and meanwhile, necking end and outer tube body and insulating plug have played dual sealing property, thereby has improved the sealing of insulating plug and outer tube.
As specializing, described outer tube is aluminum outer tube, and described body is stainless steel body.The heat conductivility of described aluminum outer tube is better than the steering capability of stainless steel body, and therefore, the heat of outer tube can be more even, thereby makes the heat of body more even.And because the thermal coefficient of expansion of outer tube and body is different, be the thermal coefficient of expansion that aluminum outer tube is greater than stainless steel body, under the environment colding and heat succeed each other, stainless steel body has fastening effect to aluminum outer tube, thereby improved the dimensional stability of heating tube, promoted the quality of heating tube; Meanwhile, the good welding performance of stainless steel body and rustless steel container.
As specializing, described heater element is heater strip.
Accompanying drawing explanation
Fig. 1 is the stereogram of double-layer tube wall heating tube.
Fig. 2 is the front view of double-layer tube wall heating tube.
Fig. 3 is the cutaway view of double-layer tube wall heating tube A-A.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
As shown in Figure 1 to Figure 3, double-layer tube wall heating tube comprises electrode 1, heater element 2, outer tube 3, body 4 and insulating plug 5.
As shown in Figure 3, described heater element 2 is heater strip.Described outer tube 3 is aluminum outer tube, and its middle external tube 3 comprises outer tube body 31 and is positioned at the necking end 32 at outer tube body 31 two ends.Described body 4 is stainless steel body, described in be that body 4 is enclosed within on outer tube outer wall and with outer tube body 31 outer walls and contacts.Described insulating plug 5 is ledge structure, insulating plug 5 is located at the two ends of outer tube, wherein the inwall of outer tube body 31 contacts with the large end 51 of insulating plug, necking end 32 contacts with the small end 52 of insulator, played the effect of double-layer seal, thereby improved sealing property, in addition, can also improve the fixedly reliability to insulating plug.Described electrode 1 arranges through insulating plug 5, and heating wire is electrically connected on electrode, is filled with within the outer tube insulating heat-conductive particle, and described insulating heat-conductive particle is magnesia powder particle.
In the utility model, double-layer tube wall heating tube is when work, and the heat of heater strip is first delivered on outer tube 3, and a part of heat is delivered on body 4 after the interior transfers of outer tube 3, another part heat is radially directly delivered on body 4 in outer tube 3, in body 4, heat also further transmits, like this, can make the heat on body even, thereby make working temperature even, to expand range of application, improve the quality of heating.And because aluminum outer tube is greater than the thermal coefficient of expansion of stainless steel body, therefore, stainless steel tube physical efficiency has fastening effect to aluminum outer tube, in addition, the good welding performance of stainless steel body and rustless steel container.
Claims (5)
1. a double-layer tube wall heating tube, comprises electrode, heater element and outer tube, and electrode is located at the two ends of outer tube, and heater element is established within the outer tube and is electrically connected with electrode; It is characterized in that: on outer tube, cover has the body contacting with outer tube wall.
2. double-layer tube wall heating tube according to claim 1, is characterized in that: the two ends at outer tube are respectively equipped with insulating plug, and electrode is located on insulating plug.
3. double-layer tube wall heating tube according to claim 2, is characterized in that: insulating plug is ledge structure; Described outer tube comprises outer tube body and necking end, the large end in contact of the inwall of outer tube body and insulating plug, the little end in contact of necking end and insulator.
4. double-layer tube wall heating tube according to claim 1, is characterized in that: described outer tube is aluminum outer tube, and described body is stainless steel body.
5. double-layer tube wall heating tube according to claim 1, is characterized in that: described heater element is heater strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320495337.5U CN203399310U (en) | 2013-08-14 | 2013-08-14 | Double-wall heating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320495337.5U CN203399310U (en) | 2013-08-14 | 2013-08-14 | Double-wall heating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399310U true CN203399310U (en) | 2014-01-15 |
Family
ID=49910805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320495337.5U Expired - Fee Related CN203399310U (en) | 2013-08-14 | 2013-08-14 | Double-wall heating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399310U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062338A1 (en) * | 2013-10-29 | 2015-05-07 | 广州市拓璞电器发展有限公司 | Heating apparatus |
| CN105987511A (en) * | 2015-02-27 | 2016-10-05 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater heating device and electric water heater |
| CN108896603A (en) * | 2018-07-27 | 2018-11-27 | 中国核动力研究设计院 | A kind of metallic insulation tubular test coupon Experimental Study of Heat Transfer device |
| CN110267376A (en) * | 2019-06-17 | 2019-09-20 | 东莞市金烨电热材料有限公司 | A kind of zinc, aluminium alloy electric melting and heat preservation furnace Special electrical heating element |
-
2013
- 2013-08-14 CN CN201320495337.5U patent/CN203399310U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062338A1 (en) * | 2013-10-29 | 2015-05-07 | 广州市拓璞电器发展有限公司 | Heating apparatus |
| CN105987511A (en) * | 2015-02-27 | 2016-10-05 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater heating device and electric water heater |
| CN108896603A (en) * | 2018-07-27 | 2018-11-27 | 中国核动力研究设计院 | A kind of metallic insulation tubular test coupon Experimental Study of Heat Transfer device |
| CN110267376A (en) * | 2019-06-17 | 2019-09-20 | 东莞市金烨电热材料有限公司 | A kind of zinc, aluminium alloy electric melting and heat preservation furnace Special electrical heating element |
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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: 20140115 Termination date: 20190814 |