CN2730068Y - Explosion-proof electric heating device - Google Patents
Explosion-proof electric heating device Download PDFInfo
- Publication number
- CN2730068Y CN2730068Y CN 200420108476 CN200420108476U CN2730068Y CN 2730068 Y CN2730068 Y CN 2730068Y CN 200420108476 CN200420108476 CN 200420108476 CN 200420108476 U CN200420108476 U CN 200420108476U CN 2730068 Y CN2730068 Y CN 2730068Y
- Authority
- CN
- China
- Prior art keywords
- explosion
- metal tube
- proof
- electric heating
- heating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005485 electric heating Methods 0.000 title abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 239000011777 magnesium Substances 0.000 claims abstract description 10
- 238000004880 explosion Methods 0.000 claims abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003889 chemical engineering Methods 0.000 abstract 2
- 239000003208 petroleum Substances 0.000 abstract 2
- 206010000369 Accident Diseases 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Abstract
The utility model relates to an explosion-proof electric heating device for the production process of petroleum and chemical engineering, comprising an explosion-proof metal pipe 1, an insulated heat conductive magnesium cover 2, an inner metal pipe 3, a resistance wire 4, a ring metal plate 5, a fixed flange 6, and an explosion-proof junction box 8. The electric heating device has reasonable design, novel structure, and reliable operation. The electric heating function can be realized during the production process of petroleum and chemical engineering when the electric heating device is used. In particular, the electric arc is prevented from generating on condition of an electric breakdown fault. The utility model can effectively prevent the explosion and a fire accident, and guarantees the safe production.
Description
Technical field:
The utility model relates to a kind of explosion-proof type electric heater unit that is used for oil, chemical process.
Background technology:
Need to adopt the electric heater unit that has explosion-proof performance in a large number in oil, chemical production equipment and the technological process.At present, the magnesium core that the magnesium oxide that the electric heater unit of oil, chemical enterprise The field adopts resistance wire to place to have insulating heat-conductive is usually made, close then being fixed in the metal tube, the electrical heating elements that is made into are welded as a whole with being connected with flange, constitute electric heater unit.This kind electric heater unit under normal circumstances service behaviour and explosion-proof performance still can; but wherein the magnesium core insulation wears out when the electrical breakdown fault takes place after using certain hour; because fault point and fault current are indefinite; the time lengthening of feasible control protection switch fault trip; the fault element fault point forms the short circuit of electric arc continuation in heat medium; blast easily, accident such as fire, cause serious threat to safety in production.
Summary of the invention:
The purpose of this utility model is to provide a kind of and is taking place can to prevent to produce electric arc under the electrical breakdown failure condition, thereby effectively prevents to explode, explosion-proof type electric heater unit that accident such as fire takes place.
The utility model is to realize like this.This kind electric heater unit is made up of explosion-proof metal tube, insulating heat-conductive magnesium cover, interior metal tube, resistance wire, annular metal sheet, mounting flange, binding post and anti-explosion terminal box, be metal tube in " U " shape is housed in the explosion-proof metal tube of " U " shape tubulose, be provided with insulating heat-conductive magnesium cover therebetween, in the interior metal tube resistance wire be housed; Uncovered end of explosion-proof metal tube and mounting flange are welded as a whole, and interior metal tube end is welded with the annular metal sheet that is used for work grounding, and the binding post that the resistance wire interior with being arranged on pipe is connected is equipped with in the outside, and the mounting flange lateral surface is equipped with anti-explosion terminal box.During use, the heating element of this device is partly placed heated medium, can normally move after the energising, realize heating function.When above-mentioned electrical breakdown fault takes place in heating element, even the control power supply can not trip immediately, because fault is limited in the magnesium cover, the insulating heat-conductive effect of magnesium cover and the protective action of explosion-proof metal tube, make the heat of electric heating element can only be dispersed in the heated medium, and can not produce electric arc, thereby restriction, prevented the generation of blast, fire incident.
The utility model is reasonable in design, novel structure, reliable operation, utilize it in oil, chemical process, to realize electric heating function, particularly taking place to prevent under the electrical breakdown failure condition that electric arc from producing, prevent that effectively blast, fire incident from taking place, ensure safety in production, be suitable for and apply.
Description of drawings:
Accompanying drawing is a general structure schematic diagram of the present utility model.
Embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of explosion-proof metal tube 1, insulating heat-conductive magnesium cover 2, interior metal tube 3, resistance wire 4, annular metal sheet 5, mounting flange 6, binding post 7 and anti-explosion terminal box 8, its structure, assembled relation are as follows: U " metal tube 3 in " U " shape is housed in the explosion-proof metal tube 1 of shape tubulose; be provided with insulating heat-conductive magnesium cover 2 therebetween, in the interior metal tube 3 resistance wire 4 be housed; Explosion-proof metal tube 1 a uncovered end and mounting flange 6 are welded as a whole, interior metal tube 3 ends are welded with the annular metal sheet 5 that is used for work grounding, the binding post 7 that the resistance wire 4 interior with being arranged on pipe is connected is equipped with in the outside, and mounting flange 6 lateral surfaces are equipped with anti-explosion terminal box 8.Wherein, explosion-proof metal tube 1, interior metal tube 3 are the U that two group length are identical, diameter is different " the shape pipe.Insulating heat-conductive magnesium cover 2 also can adopt the sleeve pipe of magnesium oxide making by filling fixed the forming of magnesium oxide of town between explosion-proof metal tube 1 and interior metal tube 3.
Claims (1)
1, a kind of explosion-proof type electric heater unit, form by explosion-proof metal tube (1), insulating heat-conductive magnesium cover (2), interior metal tube (3), resistance wire (4), annular metal sheet (5), mounting flange (6), binding post (7) and anti-explosion terminal box (8), it is characterized in that: be U " " U " interior metal tube (3) is housed in the explosion-proof metal tube (1) of shape tubulose; be provided with insulating heat-conductive magnesium cover (2) therebetween, resistance wire (4) is housed in the interior metal tube (3); Uncovered end of explosion-proof metal tube (1) and mounting flange (6) are welded as a whole, interior metal tube (3) end is welded with the annular metal sheet (5) that is used for work grounding, the binding post (7) that the resistance wire (4) interior with being arranged on pipe is connected is equipped with in the outside, and mounting flange (6) lateral surface is equipped with anti-explosion terminal box (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108476 CN2730068Y (en) | 2004-10-21 | 2004-10-21 | Explosion-proof electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108476 CN2730068Y (en) | 2004-10-21 | 2004-10-21 | Explosion-proof electric heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730068Y true CN2730068Y (en) | 2005-09-28 |
Family
ID=35048841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420108476 Expired - Fee Related CN2730068Y (en) | 2004-10-21 | 2004-10-21 | Explosion-proof electric heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730068Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909371B (en) * | 2010-02-05 | 2012-05-23 | 江苏裕兴电器有限公司 | Explosion-proof electric heater |
| CN103776253A (en) * | 2014-01-24 | 2014-05-07 | 上海威捷制衣机械有限公司 | Mixed heating system used for pre-shrinking machine |
| CN106559926A (en) * | 2016-11-28 | 2017-04-05 | 镇江恒安防爆电器有限公司 | A kind of new type explosion proof electric heating tube |
| CN106793202A (en) * | 2016-11-28 | 2017-05-31 | 镇江恒安防爆电器有限公司 | A kind of anti-explosion heating pipe |
| CN109041305A (en) * | 2018-08-21 | 2018-12-18 | 镇江裕太防爆电加热器有限公司 | A kind of U-shaped electric heating tube production method |
-
2004
- 2004-10-21 CN CN 200420108476 patent/CN2730068Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909371B (en) * | 2010-02-05 | 2012-05-23 | 江苏裕兴电器有限公司 | Explosion-proof electric heater |
| CN103776253A (en) * | 2014-01-24 | 2014-05-07 | 上海威捷制衣机械有限公司 | Mixed heating system used for pre-shrinking machine |
| CN106559926A (en) * | 2016-11-28 | 2017-04-05 | 镇江恒安防爆电器有限公司 | A kind of new type explosion proof electric heating tube |
| CN106793202A (en) * | 2016-11-28 | 2017-05-31 | 镇江恒安防爆电器有限公司 | A kind of anti-explosion heating pipe |
| CN106559926B (en) * | 2016-11-28 | 2020-01-21 | 镇江恒安防爆电器有限公司 | Explosion-proof electric heating pipe |
| CN109041305A (en) * | 2018-08-21 | 2018-12-18 | 镇江裕太防爆电加热器有限公司 | A kind of U-shaped electric heating tube production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |