CN2916448Y - Dry type explosion-prevention electric heater - Google Patents
Dry type explosion-prevention electric heater Download PDFInfo
- Publication number
- CN2916448Y CN2916448Y CN 200620090917 CN200620090917U CN2916448Y CN 2916448 Y CN2916448 Y CN 2916448Y CN 200620090917 CN200620090917 CN 200620090917 CN 200620090917 U CN200620090917 U CN 200620090917U CN 2916448 Y CN2916448 Y CN 2916448Y
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- CN
- China
- Prior art keywords
- explosion
- heating element
- case
- heater
- 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 - Fee Related
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Abstract
A dry type explosion-proof heater is provided, which comprises a protection case and an explosion-proof switch positioned at one side of the case. A bracket on which a PTC heating element is provided is arranged in the case, and the PTC heating element is connected with the explosion-proof switch through a high temperature resistant cable; a heat radiating window is arranged on the case. Convection principle is applied to the heater to enable heat produced by PTC heating element in the case to rise naturally and radiate to equipment measuring house, ensuring equipment in the measuring house working normally in winter. The heater is characterized in that: oil leakage and short circuit can be avoided as PTC heating element is used as heating element, safe temperature required by explosion gas dangerous occasion can be achieved without temperature controller, and service life of the heater is extended.
Description
Technical field:
The utility model relates to a kind of heater, specifically a kind of explosion-proof electric heater of dry type that equipment metering room uses in oilfield surface construction.
Background technology:
Domestic explosion-proof electric heater all adopts the oil medium type structure at present, reaches safe serviceability temperature with temperature controller.But the product of industrial use, the explosion-proof electric heater that uses of petrochemical industry particularly, need run without interruption for a long time, the general explosion-proof electric heater of band temperature controller that uses is frequent because of variation of ambient temperature, have a strong impact on the service life of product, maintenance capacity increases, and breaking down at temperature controller, back electric heater temperature is uncontrollable will bring serious potential safety hazard.And the oil medium type structure, because the working time is long, the sealing gasket in the electric heater is aging easily, and also carbonization easily of the working solution in the oily spit of fland, leakage of oil and short circuit phenomenon also take place easily.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides the explosion-proof electric heater of dry type that a kind of long service life, no leakage of oil and short circuit phenomenon take place.
The purpose of this utility model is to realize like this, it comprises protection cabinet and places the flame-proof switch of this casing one side, it is characterized in that: be provided with support in casing, support is provided with the PTC calandria, and this PTC calandria connects with flame-proof switch through the high-temperature insulation cable; Casing is provided with the heat radiation window.Utilize convective principles, make to be installed in the heat nature fast rise that PTC calandria in the protection cabinet produces, be dispersed into equipment metering room, make it to guarantee the equipment operate as normal in the equipment metering room in winter by the heat radiation window.
The utility model has the advantages that and utilize the PTC calandria that make it not have leakage of oil and short circuit phenomenon to take place, no temperature controller also can reach in the required safe temperature in damp hazardous area, prolongs the service life of electric heater as heating element heater.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A view.
The specific embodiment:
With reference to the accompanying drawings, the utility model is made of protection cabinet 4, PTC calandria 3, flame-proof switch 1 and high-temperature insulation cable 2.Protection cabinet 4 is provided with heat radiation window 6, and PTC calandria 3 places on the support 5 in the protection cabinet 4, and PTC calandria 3 has four and is divided into two groups, connects with flame-proof switch 1 by high-temperature insulation cable 2, and what of heat are artificially controlled as required.
Claims (1)
1, the explosion-proof electric heater of a kind of dry type, it comprises protection cabinet and the flame-proof switch that places this casing one side, and it is characterized in that: be provided with support in casing, support is provided with the PTC calandria, and this PTC calandria connects with flame-proof switch through the high-temperature insulation cable; Casing is provided with the heat radiation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090917 CN2916448Y (en) | 2006-05-23 | 2006-05-23 | Dry type explosion-prevention electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090917 CN2916448Y (en) | 2006-05-23 | 2006-05-23 | Dry type explosion-prevention electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2916448Y true CN2916448Y (en) | 2007-06-27 |
Family
ID=38187361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090917 Expired - Fee Related CN2916448Y (en) | 2006-05-23 | 2006-05-23 | Dry type explosion-prevention electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2916448Y (en) |
-
2006
- 2006-05-23 CN CN 200620090917 patent/CN2916448Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 |