CN218349654U - Anti-interference temperature transmitter - Google Patents
Anti-interference temperature transmitter Download PDFInfo
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- CN218349654U CN218349654U CN202222114228.6U CN202222114228U CN218349654U CN 218349654 U CN218349654 U CN 218349654U CN 202222114228 U CN202222114228 U CN 202222114228U CN 218349654 U CN218349654 U CN 218349654U
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- protection tube
- thermocouple
- temperature transmitter
- temperature
- junction box
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Abstract
The utility model discloses an anti-interference temperature transmitter, including terminal box and temperature-sensing assembly, the inside of terminal box is provided with the converter subassembly, temperature-sensing assembly connects in the bottom of converter subassembly, temperature-sensing assembly includes thermocouple, insulation support, last protection tube, lower protection tube and heat conduction copper sheet, the bottom outer wall cover of thermocouple is equipped with insulation support, and the outside of thermocouple is provided with the protection tube, the bottom threaded connection who goes up the protection tube has lower protection tube, insulation support's inside is run through there is the heat conduction copper sheet. This anti-interference temperature transmitter, thermocouple are based on permeable lower protection tube of heat conduction copper sheet and insulation support and accurate temperature measurement to avoid having the difference in temperature to produce, and lower protection tube and insulation support can play safeguard function and anti-interference effect, and the dismouting of being convenient for of lower protection tube and insulation support is convenient for overhaul the thermocouple moreover.
Description
Technical Field
The utility model relates to a temperature transmitter technical field specifically is an anti-interference temperature transmitter.
Background
The temperature transmitter adopts a thermocouple and a thermal resistor as temperature measuring elements, signals output by the temperature measuring elements are transmitted to a transmitter module, the signals are converted into 4-20 mA current signals 0-5V/0-10V voltage signals which are in linear relation with the temperature after being processed by circuits such as voltage stabilizing filtering, operational amplification, nonlinear correction, V/I conversion, constant current and reverse protection, RS485 digital signals are output, namely the temperature transmitter converts the signals of the thermocouple into current signals, and the current signals are connected to a secondary instrument, so that the corresponding temperature is displayed.
As in application No.: CN202123160890.7, the utility model discloses a strong integrated temperature transmitter of interference immunity, include: the temperature sensor comprises a junction box, a protection tube arranged at the bottom of the junction box, an instrument cover arranged at the top of the junction box, an electrical outlet arranged on the side wall of the junction box, and a temperature sensor arranged on the protection tube, wherein a heat dissipation port is formed in the lower end of the inner side wall of the junction box, a converter assembly is arranged in the junction box, a thermocouple is arranged in the protection tube, and an insulating sleeve is arranged at the top of the thermocouple. The instrument cover of the integrated temperature transmitter with strong anti-interference performance is connected with the junction box through threads, so that the integrated temperature transmitter can be very conveniently disassembled and assembled, and is convenient to maintain and replace internal parts; the arrangement of the heat dissipation port can effectively dissipate heat of the junction box, and prolong the service life of the temperature transmitter; the temperature sensor and the insulating sleeve are arranged to ensure the stability of temperature measurement.
Temperature transmitters similar to the above-mentioned application currently suffer from the following disadvantages:
the thermocouple is located the protective tube, and the thermocouple top is provided with insulation support to this plays dries by fire anti-interference effect in signal of telecommunication transmission process, with improvement temperature measurement stability, but protective tube and insulation support influence the temperature transfer easily, lead to the thermocouple measured the temperature and have the difference in temperature with actual temperature.
Therefore, in view of the above, a temperature transmitter with anti-interference function is proposed by improving the existing structure and defects, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anti-interference temperature transmitter to solve the problem of proposing in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an anti-interference temperature transmitter, includes terminal box and temperature sensing subassembly, the inside of terminal box is provided with the converter subassembly, the temperature sensing subassembly is connected in the bottom of converter subassembly, the temperature sensing subassembly includes thermocouple, insulation support, upper shield pipe, lower protection tube and heat conduction copper sheet, the bottom outer wall cover of thermocouple is equipped with insulation support, and the outside of thermocouple is provided with the upper shield pipe, the bottom threaded connection of upper shield pipe has the lower protection tube, insulation support's inside is run through there is the heat conduction copper sheet.
Furthermore, the heat conduction copper sheet still runs through the lower protection tube, and insulation support passes through heat conduction copper sheet and lower protection tube fixed connection.
Furthermore, the top of the upper protection pipe is fixedly connected with the bottom of the junction box, and the inner wall of the upper protection pipe is not in contact with the outer wall of the thermocouple.
Furthermore, the top of the junction box is connected with a box cover through threads, and a spring rod is embedded into the bottom of the inner wall of the junction box.
Furthermore, the top of the spring rod is fixedly connected with the bottom of the converter assembly, and the spring rod is located around the bottom of the converter assembly.
Furthermore, the converter assembly is elastically connected with the junction box through a spring rod, and the outer wall of the converter assembly is not in contact with the inner wall of the junction box.
Furthermore, heat dissipation holes are formed in the periphery of the middle of the junction box, and heat dissipation pipes penetrate through the heat dissipation holes.
Further, the outer wall of cooling tube is provided with reset spring, and the cooling tube passes through reset spring and terminal box elastic connection.
The utility model provides an anti-interference temperature transmitter possesses following beneficial effect:
the thermocouple is based on permeable lower protection tube of heat conduction copper sheet and insulation support and accurate temperature measurement to avoid there being the difference in temperature to produce, and lower protection tube and insulation support can play safeguard function and anti-interference effect, and the dismouting of being convenient for of lower protection tube and insulation support is convenient for overhaul the thermocouple moreover.
1. The utility model discloses, the heat conduction copper sheet can see through lower protection tube with ambient temperature and transmit to insulation support inside to the accurate temperature measurement of thermocouple, and the later stage makes it carry insulation support through the heat conduction copper sheet through rotatory lower protection tube and breaks away from the thermocouple bottom, lower protection tube and upper shield pipe separation simultaneously, so that the thermocouple bottom exposes, so that the later stage is overhauld, and the thermocouple plays safeguard function and anti-interference function through lower protection tube, upper shield tube and insulation support's parcel, with guarantee temperature measurement stability.
2. The utility model discloses, twist to change and take off the lid so that the inside converter subassembly of terminal box exposes, draw the cooling tube outward this moment and make reset spring shrink to make the cooling tube tip leave converter subassembly surface, the spring beam extends and the lifting converter subassembly this moment, makes the circuit board of converter subassembly and electronic component's contact department shift up, so that the staff overhauls the test.
3. The utility model discloses, can loosen the cooling tube when overhauing the converter subassembly after moving up, reset spring extends this moment and makes the cooling tube tip be located converter subassembly bottom and supports, so that the maintainer application of force, avoid the converter subassembly to take place to rock, and the cooling tube tip is located converter subassembly surface during converter subassembly function, make the spring beam keep contracting form, in order to prevent that the converter subassembly from rocking, and the spring beam keeps when contracting form converter subassembly bottom still with the contact of terminal box inner wall, make converter subassembly bottom unsettled and be convenient for the heat dissipation.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a lower protection tube of an anti-interference temperature transmitter according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the junction box of the anti-interference temperature transmitter of the present invention;
fig. 3 is the utility model relates to an anti-interference temperature transmitter's cooling tube spatial structure schematic diagram.
In the figure: 1. a junction box; 2. a converter assembly; 3. a temperature sensing assembly; 301. a thermocouple; 302. an insulating sleeve; 303. an upper protection tube; 304. a lower protection tube; 305. a thermally conductive copper sheet; 4. a box cover; 5. a spring lever; 6. heat dissipation holes; 7. a radiating pipe; 8. a return spring.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-2, an anti-interference temperature transmitter includes a terminal box 1 and a temperature sensing assembly 3, a converter assembly 2 is disposed inside the terminal box 1, the temperature sensing assembly 3 is connected to the bottom of the converter assembly 2, the temperature sensing assembly 3 includes a thermocouple 301, an insulating sleeve 302, an upper protection tube 303, a lower protection tube 304 and a heat conducting copper sheet 305, the insulating sleeve 302 is sleeved on the outer wall of the bottom end of the thermocouple 301, the upper protection tube 303 is disposed outside the thermocouple 301, the bottom of the upper protection tube 303 is connected with the lower protection tube 304 through a thread, a heat conducting copper sheet 305 penetrates through the inside of the insulating sleeve 302, the heat conducting copper sheet 305 also penetrates through the lower protection tube 304, the insulating sleeve 302 is fixedly connected with the lower protection tube 304 through the heat conducting copper sheet 305, the top of the upper protection tube 303 is fixedly connected with the bottom of the terminal box 1, and the inner wall of the upper protection tube 303 is not in contact with the outer wall of the thermocouple 301;
the operation is as follows, the bottom of the thermocouple 301 is covered by the insulating sleeve 302, the thermocouple 301 is entirely located inside the upper protection tube 303 and the lower protection tube 304, and the upper protection tube 303 and the lower protection tube 304 are connected by screw threads, when the temperature transmitter is operated, the external temperature is transmitted to the inside of the insulating sleeve 302 through the lower protection tube 304 by the heat conducting copper sheet 305, so as to be sensed by the thermocouple 301, the thermocouple 301 measures the external temperature and transmits the external temperature to the converter assembly 2, the converter assembly 2 converts the signal into a current signal and transmits the current signal to the instrument through a connecting line to be displayed in a digital form, wherein the upper protection tube 303 and the lower protection tube 304 play a protection role on the thermocouple 301, the insulating sleeve 302 can prevent the electric signal from being interfered in the transmission process, and the heat conducting copper sheet 305 can transmit the external temperature to the inside of the insulating sleeve 302 through the lower protection tube 304, so that the thermocouple 301 measures the temperature accurately, and the lower protection tube 304 is separated from the bottom of the thermocouple 301 by rotating the lower protection tube 304 to carry the insulating sleeve 302 through the heat conducting copper sheet 305, and the lower protection tube 304 is separated from the bottom of the thermocouple 301, so that the bottom of the thermocouple 301 is exposed, so as to be repaired later.
As shown in fig. 1-3, a box cover 4 is connected to the top of the junction box 1 through a thread, a spring rod 5 is embedded into the bottom of the inner wall of the junction box 1, the top of the spring rod 5 is fixedly connected with the bottom of the converter assembly 2, the spring rod 5 is located around the bottom of the converter assembly 2, the converter assembly 2 is elastically connected with the junction box 1 through the spring rod 5, the outer wall of the converter assembly 2 is not in contact with the inner wall of the junction box 1, heat dissipation holes 6 are formed around the middle of the junction box 1, heat dissipation pipes 7 penetrate through the heat dissipation holes 6, return springs 8 are arranged on the outer walls of the heat dissipation pipes 7, and the heat dissipation pipes 7 are elastically connected with the junction box 1 through the return springs 8;
the operation is as follows, when the temperature transmitter works, the spring rod 5 is in a contraction shape, the radiating pipe 7 extends out of the junction box 1 along the radiating hole 6 through the return spring 8, so that the bottom of the radiating pipe 7 is in surface contact with the converter assembly 2, at the moment, the spring rod 5 keeps in the contraction shape, so as to prevent the converter assembly 2 from shaking, when the spring rod 5 keeps in the contraction shape, the bottom of the converter assembly 2 is still not in contact with the inner wall of the junction box 1, so that the bottom of the converter assembly 2 is suspended and the heat is convenient to dissipate, the heat is discharged through the radiating pipe 7, when the converter assembly 2 needs to be overhauled in the later period, the box cover 4 is screwed and taken down, then the radiating pipe 7 is pulled outwards to enable the return spring 8 to shrink, so that the end of the radiating pipe 7 leaves the surface of the converter assembly 2, at the moment, the spring rod 5 extends to lift the converter assembly 2, so that the contact point of the circuit board and the electronic element of the converter assembly 2 moves upwards, so that the worker can overhaul and test can be carried out, and the radiating pipe 7 can be loosened when the converter assembly 2 is overhauled, at the moment, and the end of the radiating pipe 7 is located at the bottom of the converter assembly 2 to support the radiator, so as to avoid the application of the maintainer.
In summary, as shown in fig. 1-3, when the temperature transmitter is used, firstly, when the temperature transmitter works, the spring rod 5 is contracted, and the heat dissipation pipe 7 extends towards the inside of the junction box 1 through the return spring 8 along the heat dissipation hole 6, so that the bottom of the heat dissipation pipe 7 contacts with the surface of the converter assembly 2, and at this time, the spring rod 5 keeps contracted to prevent the converter assembly 2 from shaking;
and the bottom of the converter component 2 still does not contact with the inner wall of the junction box 1 when the spring rod 5 keeps a contracted state, so that the bottom of the converter component 2 is suspended to facilitate heat dissipation, and heat is discharged through the heat dissipation pipe 7;
then the bottom of the thermocouple 301 is wrapped by an insulating sleeve 302, the thermocouple 301 is entirely positioned inside the upper protection tube 303 and the lower protection tube 304, the upper protection tube 303 and the lower protection tube 304 are in threaded connection, when the temperature transmitter operates, the external temperature is transmitted to the inside of the insulating sleeve 302 through the lower protection tube 304 through the heat conducting copper sheet 305, so that the external temperature is sensed by the thermocouple 301, the thermocouple 301 measures the external temperature and transmits the external temperature to the converter assembly 2, and the converter assembly 2 converts the signal into a current signal and transmits the current signal to the instrument through a connecting line to be displayed in a digital form;
the upper protection tube 303 and the lower protection tube 304 play a role in protecting the thermocouple 301, the insulating sleeve 302 can prevent electric signals from being interfered in the transmission process, the heat-conducting copper sheet 305 can transmit the external temperature to the inside of the insulating sleeve 302 through the lower protection tube 304 so that the thermocouple 301 can accurately measure the temperature, the lower protection tube 304 is rotated in the later period to enable the lower protection tube 304 to carry the insulating sleeve 302 through the heat-conducting copper sheet 305 to be separated from the bottom of the thermocouple 301, and meanwhile, the lower protection tube 304 is separated from the upper protection tube 303 so that the bottom of the thermocouple 301 is exposed and convenient to overhaul in the later period;
at last the later stage need overhaul converter subassembly 2 when, twist earlier and change and take off lid 4, then draw the cooling tube 7 outward and make reset spring 8 shrink, thereby make 7 tip of cooling tube leave converter subassembly 2 surfaces, spring beam 5 extends and lifting converter subassembly 2 this moment, make converter subassembly 2's circuit board shift up with electronic component's contact department, so that the staff overhauls the test, and can loosen cooling tube 7 when overhauing the converter subassembly 2 after shifting up, reset spring 8 extends and makes 7 tip of cooling tube be located converter subassembly 2 bottom in order to support it this moment, so that the maintainer application of force, avoid converter subassembly 2 to take place to rock.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides an anti-interference temperature transmitter, includes terminal box (1) and temperature sensing subassembly (3), its characterized in that: the inside of terminal box (1) is provided with converter subassembly (2), temperature sensing subassembly (3) are connected in the bottom of converter subassembly (2), temperature sensing subassembly (3) include thermocouple (301), insulating sleeve (302), go up protection tube (303), lower protection tube (304) and heat conduction copper sheet (305), the bottom outer wall cover of thermocouple (301) is equipped with insulating sleeve (302), and the outside of thermocouple (301) is provided with protection tube (303), the bottom threaded connection of going up protection tube (303) has lower protection tube (304), the inside of insulating sleeve (302) is run through there is heat conduction copper sheet (305).
2. The tamper resistant temperature transmitter of claim 1 wherein the thermally conductive copper sheet (305) further extends through the lower protective tube (304) and the insulating sleeve (302) is fixedly connected to the lower protective tube (304) by the thermally conductive copper sheet (305).
3. The tamper resistant temperature transmitter of claim 1, wherein the top of the upper protection tube (303) is fixedly connected with the bottom of the junction box (1), and the inner wall of the upper protection tube (303) is not in contact with the outer wall of the thermocouple (301).
4. The anti-interference temperature transmitter of claim 1, characterized in that the top of the junction box (1) is connected with a box cover (4) through screw threads, and a spring rod (5) is embedded in the bottom of the inner wall of the junction box (1).
5. The tamper resistant temperature transmitter of claim 4, wherein the top of the spring bar (5) is fixedly connected to the bottom of the converter assembly (2), and the spring bar (5) is located around the bottom of the converter assembly (2).
6. The temperature transmitter of claim 4, wherein the converter assembly (2) is elastically connected to the junction box (1) through a spring rod (5), and the outer wall of the converter assembly (2) is not in contact with the inner wall of the junction box (1).
7. The anti-interference temperature transmitter of claim 1, wherein heat dissipation holes (6) are formed around the middle of the junction box (1), and a heat dissipation pipe (7) penetrates through the heat dissipation holes (6).
8. The tamper resistant temperature transmitter of claim 7, wherein the outer wall of the radiating pipe (7) is provided with a return spring (8), and the radiating pipe (7) is elastically connected with the junction box (1) through the return spring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222114228.6U CN218349654U (en) | 2022-08-11 | 2022-08-11 | Anti-interference temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222114228.6U CN218349654U (en) | 2022-08-11 | 2022-08-11 | Anti-interference temperature transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218349654U true CN218349654U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222114228.6U Active CN218349654U (en) | 2022-08-11 | 2022-08-11 | Anti-interference temperature transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN218349654U (en) |
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2022
- 2022-08-11 CN CN202222114228.6U patent/CN218349654U/en active Active
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