CN204145767U - There is the electric heater of explosion prevention function - Google Patents
There is the electric heater of explosion prevention function Download PDFInfo
- Publication number
- CN204145767U CN204145767U CN201420579849.4U CN201420579849U CN204145767U CN 204145767 U CN204145767 U CN 204145767U CN 201420579849 U CN201420579849 U CN 201420579849U CN 204145767 U CN204145767 U CN 204145767U
- Authority
- CN
- China
- Prior art keywords
- electrothermal tube
- electric heater
- protective cover
- controller
- prevention function
- 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
Abstract
The utility model relates to a kind of electric heater with explosion prevention function.It comprises electrothermal tube, has heater strip in electrothermal tube.All there is protective cover at the two ends of described electrothermal tube, and the two ends of electrothermal tube all extend in corresponding protective cover in sealing shape.Be characterized in being positioned on the electrothermal tube outside protective cover and have temperature sensor, temperature sensor is connected with controller by wire.Described heater strip is connected with described controller by wire.The use occasion of this electric heater is unrestricted.
Description
Technical field
The utility model relates to a kind of electric heater, is the electric heater with explosion prevention function that can be used on inflammable and explosive occasion specifically.
Background technology
Electric heater as a kind of be the equipment of heat energy by electric energy conversion, because of its do not pollute, the heat efficiency is high is widely used in the industries such as machinery, chemical industry and medicine.
At present, the electric heater used in industry comprises electrothermal tube, has heater strip in electrothermal tube.There is protective cover at the two ends of described electrothermal tube, and the two ends of electrothermal tube all extend in corresponding protective cover in sealing shape.The heating wire of this electric heater in use in electrothermal tube is directly connected with power supply, and heating wire heats electrothermal tube when being energized.Because traditional electric heater is when heating, heating wire is all the time in work, the temperature of electrothermal tube is constantly raised, when using in containing the space of flammable explosive gas, electrothermal tube surface temperature may be increased to the ignition temperature of flammable explosive gas, thus set off an explosion, so traditional electric heater can not be used in the space containing flammable explosive gas, use occasion is restricted.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electric heater with explosion prevention function, and the use occasion of this electric heater is unrestricted.
For solving the problem, provide following technical scheme:
The electric heater with explosion prevention function of the present utility model, comprises electrothermal tube, has heater strip in electrothermal tube.There is protective cover at the two ends of described electrothermal tube, and the two ends of electrothermal tube all extend in corresponding protective cover in sealing shape.Be characterized in being positioned on the electrothermal tube outside protective cover and have temperature sensor, temperature sensor is connected with controller by wire.Described heater strip is connected with described controller by wire.
Wherein, described electrothermal tube is no less than two, and they are layout parallel to each other.
Take above scheme, have the following advantages:
Be positioned at due to the electric heater with explosion prevention function of the present utility model on electrothermal tube outside protective cover and have temperature sensor.Temperature sensor is connected with controller by wire, and heater strip is connected with described controller by wire.During use, when the pre-set threshold value of the temperature signal value that temperature sensor detects higher than controller, controller controls power supply to be stopped powering to heater strip; When the pre-set threshold value of the temperature signal value that temperature sensor detects lower than controller, controller controls power supply and powers to heater strip.So the pre-set threshold value of controller can be arranged on below the ignition temperature of flammable explosive gas, also can not set off an explosion even if make this electric heater use in containing the space of flammable explosive gas, its use occasion is unrestricted.
Accompanying drawing explanation
Fig. 1 is the structural representation with the electric heater of explosion prevention function of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As described in Figure 1, the electric heater with explosion prevention function of the present utility model, comprises electrothermal tube 1, is provided with heater strip 2 in electrothermal tube 1.The two ends of described electrothermal tube 1 are provided with protective cover 3, and the two ends of electrothermal tube 1 all extend in corresponding protective cover 3 in sealing shape.Be positioned on the electrothermal tube 1 outside protective cover 3 and have temperature sensor 4, temperature sensor 4 is connected with controller 5 by wire.Described heater strip 2 is connected with described controller 5 by wire.In the present embodiment, described electrothermal tube 1 is no less than two, and they are layout parallel to each other.
Described temperature sensor 4 is for detecting electrothermal tube 1 surface temperature and converting the temperature signal detected to electrical signal transfer to controller 5.
Whether described controller 5 powers to heater strip 2 for being connected with power supply and controlling power supply, and when the pre-set threshold value of the temperature signal value that temperature sensor 4 detects higher than controller 5, controller 5 controls power supply to be stopped powering to heater strip 2.When the pre-set threshold value of the temperature signal value that temperature sensor 4 detects lower than controller 5, controller 5 controls power supply and powers to heater strip 2.
Claims (2)
1. there is the electric heater of explosion prevention function, comprise electrothermal tube (1), in electrothermal tube (1), have heater strip (2); There is protective cover (3) at the two ends of described electrothermal tube (1), and the two ends of electrothermal tube (1) all extend in corresponding protective cover (3) in sealing shape; It is characterized in that being positioned on protective cover (3) electrothermal tube outward (1) and have temperature sensor (4), temperature sensor (4) is connected with controller (5) by wire; Described heater strip (2) is connected with described controller (5) by wire.
2. have the electric heater of explosion prevention function as claimed in claim 1, it is characterized in that described electrothermal tube (1) is no less than two, they are layout parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579849.4U CN204145767U (en) | 2014-10-09 | 2014-10-09 | There is the electric heater of explosion prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579849.4U CN204145767U (en) | 2014-10-09 | 2014-10-09 | There is the electric heater of explosion prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145767U true CN204145767U (en) | 2015-02-04 |
Family
ID=52422428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420579849.4U Expired - Fee Related CN204145767U (en) | 2014-10-09 | 2014-10-09 | There is the electric heater of explosion prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145767U (en) |
-
2014
- 2014-10-09 CN CN201420579849.4U patent/CN204145767U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20151009 |
|
| EXPY | Termination of patent right or utility model |