CN204616113U - A kind of super stream overtemperature self protection type electric heat tracing device - Google Patents
A kind of super stream overtemperature self protection type electric heat tracing device Download PDFInfo
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- CN204616113U CN204616113U CN201520243940.3U CN201520243940U CN204616113U CN 204616113 U CN204616113 U CN 204616113U CN 201520243940 U CN201520243940 U CN 201520243940U CN 204616113 U CN204616113 U CN 204616113U
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Abstract
The utility model relates to heater, particularly one super stream overtemperature self protection type electric heat tracing device.Electrically heat tracing overcurrent protection cannot be realized for current electric heat tracing device, other annexes are needed to assist, need unwrapping wire and the defects such as temperature transmitter are installed, disclose a kind of super stream overtemperature self protection type electric heat tracing device, comprise heater strip, positive temperature coefficient thermistor and high temperature resistant heat insulation layer, it is characterized in that: heater strip is arranged on high temperature resistant heat insulation layer, high temperature resistant heat insulation layer is spliced by high temperature resistant sheet material, for being flexibly connected between each sheet material, wherein one block of sheet material arranges binding post, described positive temperature coefficient thermistor prevents super stream from burning out heater strip by binding post the utility model of connecting with heater strip, prevent high temperature fusing heater strip, cost is low, do not need equipment or the system of other auxiliary controls additional, maintenance is convenient, the cost of overhaul is low, fast response time and temperature automatically controlled, the advantages such as regulating power.
Description
Technical field
The utility model relates to heater, particularly one super stream overtemperature self protection type electric heat tracing device.
Background technology
Electric tracing utilizes electric tracing equipment to be heat energy by electric energy conversion exactly, by direct or indirect heat exchange, supplement by the hot equipment of companion by insulation material the heat that loses, and adopt temperature to control, reach and follow the tracks of and control the temperature of medium in the hot equipment of companion, make it to maintain in a reasonable and economic level.At present, self-limiting heating cable is widely used in productive life, but during for high-temperature service, it is slow that existing self-limiting heating cable but exists reaction, the shortcoming of easy burn-out.
Therefore, in high-temperature service, the companion at present heating device that temperature element and heating device and other supplementary controlled systems are formed being applied to high-temperature service is hot.Existing technology adopts control device that is auxiliary, interlocking to realize the protection of electric-heating belt.As shown in Figure 1; when after power supply energising; electric-heating belt is started working; the temperature of electric-heating belt measured in real time by the temperature element of electric-heating belt, and when the temperature of electric-heating belt reaches protection temperature, the contactor controlling electric-heating belt work disconnects; electric-heating belt is quit work; when temperature drops to after below protection temperature, contactor adhesive, electric-heating belt is started working again.
The advantage of this programme:
Achieve the overheat protective function of electric-heating belt.
The shortcoming of this programme:
1, electrically heat tracing overcurrent protection cannot be realized.
2, very exquisite to choosing of point for measuring temperature, and if point for measuring temperature easily burns out temperature element on electric-heating belt surface, poor reliability.
3, other annexes are needed to assist, as PLC (Programmable Logic Device) or DCS (difference control system) system, contactor, temperature transmitter etc., high cost.
4, great in constructing amount, need unwrapping wire and temperature transmitter is installed.
Utility model content
For current technology Problems existing, the utility model provides a kind of super stream overtemperature self protection type electric heat tracing device.
The technical solution adopted in the utility model is: a kind of super stream overtemperature self protection type electric heat tracing device; comprise heater strip, positive temperature coefficient thermistor and high temperature resistant heat insulation layer; heater strip is arranged on high temperature resistant heat insulation layer; high temperature resistant heat insulation layer is spliced by high temperature resistant sheet material; for being flexibly connected between each sheet material; wherein one block of sheet material arranges binding post, described positive temperature coefficient thermistor is connected with heater strip by binding post.
Ptc (abbreviation of Positive Temperature Coefficient); be meant to positive temperature coefficient thermistor: _ ptc thermistor is often called resettable fuse by people again; owing to having unique positive temperature coefficient resistor characteristic, be thus very suitable as over-current protection device.When circuit normally works, the resistance of thermistor is very little, and series connection can not hinder electric current to pass through in circuit; And when there is overcurrent when circuit because fault, thermistor causes temperature to rise due to heating power increase, and when temperature exceedes switch temperature, resistance can increase severely instantaneously, and the electric current in loop is reduced to safety value rapidly.
The high temperature resistant heat insulation layer be spliced by high temperature resistant sheet material can realize bending and folder function, can be applicable to different application scenarios, be particularly suitable for heating and the isothermal holding of various cylindrical filtration tank and pipeline.
Further, the one block of sheet material wherein of corundum plate residing for described positive temperature coefficient thermistor is double-deck corundum plate.
Corundum hardness is only second to diamond, is formed by the crystallization of aluminium oxide, can do abrasive material and refractory material, and fusing point, up to 2000-2030 DEG C, is suitable for the heat insulation of heating device and insulation very much.
Further, described sheet material is corundum plate.
Further, described double-deck corundum plate is bolted.
Further, described bolt is insulated bolt.
Further, described positive temperature coefficient thermistor is arranged between double-deck corundum plate.
Installing this block corundum of thermistor is a two-layer structure, corner bolt is fixed, bolt and heater strip insulation, upper cover can be opened at any time, inner thermistor and the connected mode of binding post are fast slotting mode, replacing after facilitating thermistor to damage, upper cover also has the function compressing thermistor.
The beneficial effect that the utility model brings:
1, can prevent super stream from burning out heater strip;
2, high temperature fusing heater strip can be prevented;
3, cost is low, does not need equipment or the system of other auxiliary controls additional;
4, maintenance is convenient, and the cost of overhaul is low;
5, fast response time;
6, temperature automatically controlled, regulating power.
Accompanying drawing explanation
Fig. 1 is the flow chart that the existing employing for high-temperature service is assisted, the control device of interlocking realizes the protection of electric-heating belt;
Fig. 2 is a kind of structural representation of super stream overtemperature self protection type electric heat tracing device;
Fig. 3 is the structural representation of positive temperature coefficient thermistor;
Fig. 4 is a kind of flow chart of super stream overtemperature self protection type electric heat tracing device.
Embodiment
The high temperature resistant sheet material of the present embodiment is corundum plate.
As shown in Figure 2, after electric-heating belt energising runs, temperature can constantly raise, if the power of control electric-heating belt not in time, electric-heating belt finally can damage because of the melting temperature exceeding heater strip, even has an accident.A kind of super stream overtemperature self protection type electric heat tracing device; comprise heater strip 1, positive temperature coefficient thermistor 2 and high temperature resistant heat insulation layer 3; heater strip 1 is arranged on high temperature resistant heat insulation layer 3; high temperature resistant heat insulation layer 3 is spliced by high temperature resistant sheet material; for being flexibly connected between each sheet material; wherein one block of sheet material arranges binding post 4, described positive temperature coefficient thermistor 2 is connected with heater strip 1 by binding post 4.
The high temperature resistant heat insulation layer 3 be spliced by high temperature resistant sheet material can realize bending and folder function, can be applicable to different application scenarios, be particularly suitable for heating and the isothermal holding of various cylindrical filtration tank and pipeline.Positive temperature coefficient thermistor 2 (selecting high molecular PTC type thermistor) is connected with heater strip, along with the rising of companion's thermal region temperature, the resistance of positive temperature coefficient thermistor 2 sharply can raise by resistance when reaching the temperature value of design temperature point, according to formula P=U
2/ R is known, and voltage is constant, and resistance raises, and power also just reduces, and such produced heat also just reduces, and temperature starts to decline, and when temperature drops to after below design temperature value, thermistor returns to normal resistance, according to formula P=U
2/ R is known, and voltage is constant, and resistance reduces, and power also just raises, and such produced heat also just increases, and temperature starts to rise, periodic duty like this.
Positive temperature coefficient thermistor 2 is installed as shown in Figure 3:
Installing this block corundum plate of positive temperature coefficient thermistor 2 is a two-layer structure, corner bolt is fixed, bolt and heater strip insulation, upper cover can be opened at any time, the connected mode of positive temperature coefficient thermistor 2 and binding post 4 is fast slotting mode, replacing after facilitating thermistor to damage, the corundum plate on upper cover i.e. upper strata also has the function compressing positive temperature coefficient thermistor 2.
Claims (6)
1. a super stream overtemperature self protection type electric heat tracing device; comprise heater strip (1), positive temperature coefficient thermistor (2) and high temperature resistant heat insulation layer (3); it is characterized in that: heater strip (1) is arranged on high temperature resistant heat insulation layer (3); high temperature resistant heat insulation layer (3) is spliced by high temperature resistant sheet material; for being flexibly connected between each sheet material; wherein one block of sheet material arranges binding post (4), described positive temperature coefficient thermistor (2) is connected with heater strip (1) by binding post (4).
2. one according to claim 1 super stream overtemperature self protection type electric heat tracing device, is characterized in that: described sheet material is corundum plate.
3. one according to claim 2 super stream overtemperature self protection type electric heat tracing device, is characterized in that: the residing corundum plate of described positive temperature coefficient thermistor (2) is double-deck corundum plate.
4. one according to claim 3 super stream overtemperature self protection type electric heat tracing device, is characterized in that: described double-deck corundum plate is bolted.
5. one according to claim 4 super stream overtemperature self protection type electric heat tracing device, is characterized in that: described bolt is insulated bolt.
6. one according to claim 3 super stream overtemperature self protection type electric heat tracing device, is characterized in that: described positive temperature coefficient thermistor (2) is arranged between double-deck corundum plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520243940.3U CN204616113U (en) | 2015-04-21 | 2015-04-21 | A kind of super stream overtemperature self protection type electric heat tracing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520243940.3U CN204616113U (en) | 2015-04-21 | 2015-04-21 | A kind of super stream overtemperature self protection type electric heat tracing device |
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| Publication Number | Publication Date |
|---|---|
| CN204616113U true CN204616113U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520243940.3U Active CN204616113U (en) | 2015-04-21 | 2015-04-21 | A kind of super stream overtemperature self protection type electric heat tracing device |
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| CN (1) | CN204616113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959987A (en) * | 2017-11-30 | 2018-04-24 | 江西怡杉环保股份有限公司 | A kind of heater circuit and Related product applied to digestion tube |
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2015
- 2015-04-21 CN CN201520243940.3U patent/CN204616113U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959987A (en) * | 2017-11-30 | 2018-04-24 | 江西怡杉环保股份有限公司 | A kind of heater circuit and Related product applied to digestion tube |
| CN107959987B (en) * | 2017-11-30 | 2023-10-27 | 江西怡杉环保股份有限公司 | Heating circuit applied to digestion tube and related products |
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