CN200947679Y - Explosion-proof electric heater with double-spiral structure - Google Patents
Explosion-proof electric heater with double-spiral structure Download PDFInfo
- Publication number
- CN200947679Y CN200947679Y CNU2006201392010U CN200620139201U CN200947679Y CN 200947679 Y CN200947679 Y CN 200947679Y CN U2006201392010 U CNU2006201392010 U CN U2006201392010U CN 200620139201 U CN200620139201 U CN 200620139201U CN 200947679 Y CN200947679 Y CN 200947679Y
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- CN
- China
- Prior art keywords
- heating element
- electric heating
- resistance wire
- double
- electric heater
- 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 - Lifetime
Links
- 238000005485 electric heating Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 36
- 238000004880 explosion Methods 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Resistance Heating (AREA)
Abstract
The utility model belongs to an electric heater unit's spare part, concretely relates to explosion-proof electric heater of double helix structure, its characteristics are: compared with a single spiral armored electric heating element, the armored electric heating element with the parallel double-winding structure has the advantages that the number of the heating elements is increased by 1 time, and the power density of the electric heating element can be greatly reduced under the same power. In addition, the spiral resistance wire is adopted, so that the diameter of the resistance wire is thickened, the resistance wire is not easy to fuse, fatigue stretching fracture caused by expansion with heat and contraction with cold is avoided, the area of the heating material can be increased under the condition of the same volume, the power density of the resistance wire is reduced, and the service life of the electric heating element is prolonged. The heating device is mainly used for auxiliary heating of the voltage stabilizer of the nuclear power plant, and can also be used for heating high-temperature and high-pressure containers of chemical engineering and petroleum.
Description
Technical field
The utility model belongs to a kind of parts of electric calorifie installation, is specifically related to a kind of tubular electrical heating element.
Background technology
Application number is 93210559.9 patent application; a kind of " two protection tube anti-explosion electric heater " disclosed; it comprises the metal casing pipe; be located at the metal bar in the metal casing pipe; armoured electric heating element on the metal bar; and being filled in softer metals between metal casing pipe and the armoured electric heating element, armoured electric heating element is made up of small diameter metal tube whose, resistance wire and insulating barrier.Wherein, said armoured electric heating element is a single-screw armouring element, and its inner resistance wire is a raw silk rings.Though this electric heater has good heat conduction, insulation and explosion-proof performance, but for powerful anti-explosion electric heater, single-screw armouring element is few because of its heating element radical, and power density is big, and the resistance wire of raw silk rings structure very easily fuses and tension failure element weak point in useful life.
Summary of the invention
It is big that the purpose of this utility model provides a kind of heating power, the double-stranded anti-explosion electric heater of long service life.
The utility model is achieved in that a kind of double-stranded anti-explosion electric heater, it comprises the metal casing pipe, be located at the metal bar in the metal casing pipe, armoured electric heating element on the metal bar, be filled in the softer metals between metal casing pipe and the armoured electric heating element, armoured electric heating element is by small diameter metal tube whose, resistance wire and insulating barrier are formed, wherein, said armoured electric heating element is the double wrap structure armoured electric heating element in parallel that is formed on the metal bar by two electrical heating elements parallel connections, and its inner resistance wire is a helical structure.
Advantage of the present utility model is to adopt the armoured electric heating element of double wrap structure in parallel, compare with the single-screw armoured electric heating element, armoured electric heating element quantity increases by 1 times, in the use in parallel of same involucrum outlet port, gross power is identical but can reduce the surperficial power load of armoured electric heating element and be attached thereto the current capacity of the conducting rod that connects, and prolongs the useful life of electrical heating elements.Adopt ressitance spiral in addition, both can make the footpath chap of resistance wire silk, the tired tension failure that makes it difficult fusing and avoid causing because of expanding with heat and contract with cold, can under the volume same case, increase the area of exothermic material again, thereby greatly reduce the power density of resistance wire, prolonged the useful life of electric heating element equally.
Description of drawings
Fig. 1 is a double-stranded anti-explosion electric heater structural representation provided by the utility model.
Among the figure, 1 metal casing pipe, 2 armoured electric heating elements, 3 resistance wires, 4 insulating barriers, 5 softer metals, 6 metal bars, 7 small diameter metal tube whose.
Embodiment
As shown in Figure 1, a kind of double-stranded anti-explosion electric heater, it comprises metal casing pipe 1, be located at the metal bar 6 in the metal casing pipe 1, armoured electric heating element 2 on the metal bar 6, be filled in the softer metals 5 between metal casing pipe 1 and the armoured electric heating element 2, armoured electric heating element 2 is by small diameter metal tube whose 7, resistance wire 3 and insulating barrier 4 are formed, wherein, said armoured electric heating element 2 is the double wrap structure armoured electric heating elements in parallel that formed on the metal bar 6 by two electrical heating elements parallel connections, and its inner resistance wire 3 is a helical structure.
In the present embodiment, ressitance spiral 3 materials are Cr20Ni80, and insulating barrier 4 materials are 99% high purity magnesium oxide powder, and softer metals 5 is nickel powder or red copper powder.
The experiment proved that the utility model exchanges not have under the high pressure resistant intensity 2000V/Lmin in cold conditions and punctures or the flashover phenomenon.Shown in it and background technology performance relatively see Table.
Double-stranded anti-explosion electric heater provided by the utility model is mainly used in the assistant heating of nuclear power plant's pressurizer, also can be used for the heating of chemical industry, oil high temperature, high-pressure bottle.
Background technology and the utility model performance comparison sheet
| Sequence number | Project name | Background technology | The utility model | |
| 1 | Useful life | 〉=5000 hours | 〉=10000 | |
| 2 | Reliability | On the low side | High | |
| 3 | Heat conductivility | Excellent | Excellent | |
| 4 | Insulation property | Excellent | Excellent | |
| 5 | Internal structure | Heater is a single-screw armouring element; The internal resistance silk is the raw silk rings structure | Heater is a double helix armouring element; The internal resistance silk is a helical structure | |
| 6 | Explosion-proof | Excellent | Excellent | |
| 7 | Operating pressure | ≤22.3MPa | ≤22.3Mpa | |
| 8 | Long-term serviceability temperature | 360℃ | 360℃ | |
| 9 | Single power | ≤12kW | ≤24kW | |
| 10 | Single 24kW accelerated life test result | ≤ 40 hours | ≤ 162 hours |
Claims (1)
1. double-stranded anti-explosion electric heater, it comprises metal casing pipe (1), be located at the metal bar (6) in the metal casing pipe (1), armoured electric heating element (2) on the metal bar (6), be filled in the softer metals (5) between metal casing pipe (1) and the armoured electric heating element (2), armoured electric heating element (2) is by small diameter metal tube whose (7), resistance wire (3) and insulating barrier (4) are formed, it is characterized in that: said armoured electric heating element (2) is to go up the double wrap structure armoured electric heating element in parallel that forms by two electrical heating elements parallel connections around metal bar (6), and its inner resistance wire (3) is a helical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201392010U CN200947679Y (en) | 2006-09-05 | 2006-09-05 | Explosion-proof electric heater with double-spiral structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201392010U CN200947679Y (en) | 2006-09-05 | 2006-09-05 | Explosion-proof electric heater with double-spiral structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200947679Y true CN200947679Y (en) | 2007-09-12 |
Family
ID=38734738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201392010U Expired - Lifetime CN200947679Y (en) | 2006-09-05 | 2006-09-05 | Explosion-proof electric heater with double-spiral structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200947679Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378419A (en) * | 2011-11-03 | 2012-03-14 | 关德鑫 | High-efficiency energy-saving heater |
| CN103327666A (en) * | 2012-03-23 | 2013-09-25 | 成都酷玩网络科技有限公司 | Electric heating device capable of rapidly conducting heat and efficiently conducting heating |
| CN105657873A (en) * | 2014-08-27 | 2016-06-08 | 陈亮 | Double-winding resistance wire and manufacture process for making same into heating tube |
-
2006
- 2006-09-05 CN CNU2006201392010U patent/CN200947679Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378419A (en) * | 2011-11-03 | 2012-03-14 | 关德鑫 | High-efficiency energy-saving heater |
| CN103327666A (en) * | 2012-03-23 | 2013-09-25 | 成都酷玩网络科技有限公司 | Electric heating device capable of rapidly conducting heat and efficiently conducting heating |
| CN105657873A (en) * | 2014-08-27 | 2016-06-08 | 陈亮 | Double-winding resistance wire and manufacture process for making same into heating tube |
| CN105657873B (en) * | 2014-08-27 | 2019-04-23 | 陈亮 | A kind of manufacture craft of double wrap silk structural resistance silk production heating tube |
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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: 20070912 |
|
| EXPY | Termination of patent right or utility model |