CN219026392U - Preheating device used before thermocouple welding - Google Patents
Preheating device used before thermocouple welding Download PDFInfo
- Publication number
- CN219026392U CN219026392U CN202223026914.4U CN202223026914U CN219026392U CN 219026392 U CN219026392 U CN 219026392U CN 202223026914 U CN202223026914 U CN 202223026914U CN 219026392 U CN219026392 U CN 219026392U
- Authority
- CN
- China
- Prior art keywords
- thermocouple
- constant temperature
- preheating
- heat conduction
- heating device
- 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.)
- Active
Links
Images
Landscapes
- Control Of Temperature (AREA)
Abstract
The utility model relates to the technical field of preheating devices before thermocouple welding, in particular to a preheating device before thermocouple welding, which is characterized by comprising a shell, a heat conduction constant temperature device, a thermocouple fixing device and a heating device; a heat conduction constant temperature device is arranged in the shell; a heating device is arranged in the heat conduction constant temperature device; a thermocouple fixing device is arranged in the heating device; the heat preservation devices are filled between the shell and the heat conduction constant temperature device, between the heating device and the heat conduction constant temperature device, between the thermocouple fixing device and the heating device and inside the thermocouple fixing device. The device mainly utilizes the silicon carbide rod to generate heat when being electrified, and the device transmits the heat to the thermocouple, so that the thermocouple with the length not more than 40cm is preheated before welding, the preliminary temperature before welding is reached, and the effect of batch preheating treatment is achieved.
Description
Technical Field
The utility model relates to the technical field of preheating devices before thermocouple welding, in particular to a preheating device before thermocouple welding.
Background
The thermocouple belongs to a commonly used temperature measuring element in a temperature measuring instrument, and can directly measure the temperature, convert a temperature signal into a thermoelectromotive force signal and convert the thermoelectromotive force signal into the temperature of a measured medium through a secondary instrument. The thermocouple is usually composed of main parts such as a hot electrode, a protective sleeve, an insulating sleeve, a junction box and the like, and is matched with a display instrument, a recording instrument and the like for use. Because the thermocouple needs to be welded and sealed at the hot end in the processing process, the material can be deformed at high temperature by directly welding the thermocouple to be processed at room temperature, the performance of the shell material can be influenced, so that the thermoelectric property is changed, the temperature measurement of the thermocouple is further caused to generate errors, and when the errors exceed the allowable range, the thermocouple cannot be reused and is invalid, so that the thermocouple must be strictly processed according to the process flow in the processing process.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a preheating device for a thermocouple before welding, and the thermocouple is heated by a silicon carbide rod to reach the expected welding processing temperature.
The technical scheme adopted for solving the technical problems is as follows: the preheating device before thermocouple welding is characterized by comprising a shell, a heat conduction constant temperature device, a thermocouple fixing device and a heating device; a heat conduction constant temperature device is arranged in the shell; a heating device is arranged in the heat conduction constant temperature device; a thermocouple fixing device is arranged in the heating device; the heat preservation devices are filled between the shell and the heat conduction constant temperature device, between the heating device and the heat conduction constant temperature device, between the thermocouple fixing device and the heating device and inside the thermocouple fixing device.
According to another embodiment of the utility model, the shell is a cuboid structure made of high-temperature resistant metal material in a sealing mode.
According to another embodiment of the present utility model, the heat-conducting constant temperature device is further comprised of a cylindrical structure, which is welded from stainless steel having a thermal conductivity of less than 40W/m·k and thermodynamic isotropy.
According to another embodiment of the present utility model, the heating device is further comprised of a plurality of silicon carbide rods in an energized state.
According to another embodiment of the present utility model, the silicon carbide rods are arranged circumferentially, and the number of the silicon carbide rods is at most 6.
According to another embodiment of the present utility model, the thermocouple fixing device is a cylindrical structure, and at most 50 circular preheating thermocouples arranged transversely are placed inside the thermocouple fixing device.
According to another embodiment of the utility model, the heat preservation device is further made of high temperature resistant cotton.
The utility model has the beneficial effects that the silicon carbide rod is electrified to generate heat, and the device transfers the heat to the thermocouple, so that the thermocouple with the length not more than 40cm is preheated before welding, the preliminary temperature before welding is reached, and the effect of batch preheating treatment is achieved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a side cross-sectional view of the present utility model.
In the figure, 1, a shell, 2, a heat conduction constant temperature device, 3, a thermocouple fixing device, 4, a heating device, 5, a heat preservation device, 6 and a silicon carbide rod.
Detailed Description
Fig. 1 is a schematic structural view of the present utility model, and a preheating device used before thermocouple welding is characterized by comprising a shell 1, a heat conduction constant temperature device 2, a thermocouple fixing device 3 and a heating device 4; a heat conduction constant temperature device 2 is arranged in the shell 1; a heating device 4 is arranged in the heat conduction constant temperature device 2; a thermocouple fixing device 3 is arranged in the heating device 4; the heat preservation device 5 is filled between the shell 1 and the heat conduction constant temperature device 2, between the heating device 4 and the heat conduction constant temperature device 2, between the thermocouple fixing device 3 and the heating device 4 and inside the thermocouple fixing device 3 to prevent temperature loss and reduce heat dissipation.
Specifically, the casing 1 can be stably placed on a horizontal plane, and in order to prevent the temperature in the box body from rising too fast and further affecting the measurement accuracy, the outside of the device is filled with materials such as aluminum silicate or light refractory bricks; the heating device 4 is positioned in the heat conduction constant temperature device 2, the heating temperature is controlled through current, and the rest part is filled by the heat preservation device 5; the thermocouple fixing device 3 is mainly a circular concave hole, 50 thermocouple jacks can be placed in the thermocouple fixing device, and the gaps of the thermocouple fixing device are filled with heat preservation devices 5.
According to another embodiment of the present utility model, the casing 1 is a cuboid structure made of a high temperature resistant metal material in a sealing manner, the casing 1 is concise and smooth, has a metallic luster, can be stably placed, does not have a rollover phenomenon, and has perfect tightness to prevent a high temperature scald phenomenon.
According to another embodiment of the present utility model, the heat-conducting thermostatic device 2 is further made of stainless steel welded with thermal conductivity smaller than 40W/m·k and with thermodynamic isotropy, and has a cylindrical structure.
According to another embodiment of the utility model, the heating device 4 is further composed of a plurality of silicon carbide rods 6 in an energized state.
According to another embodiment of the utility model, it is further provided that the silicon carbide rods 6 are arranged in a circle, the number of which is at most 6, and which are capable of transmitting temperatures of more than 400 ℃.
According to another embodiment of the present utility model, the thermocouple fixing device 3 is a cylindrical structure, and at most 50 circular preheating thermocouples which are transversely arranged are placed inside the thermocouple fixing device.
According to another embodiment of the utility model, the heat preservation device 5 is further made of high temperature resistant cotton.
In a specific operation process, the shell 1 is placed on a horizontal plane, a silicon carbide rod 6 in the heating device 4 provides a heat source, current is conducted to reach a certain temperature and is transmitted into a preheating thermocouple in the thermocouple fixing device 3, the temperature around the thermocouple fixing device 3 is stabilized through the heat conducting constant temperature device 2, and the preheating thermocouple is heated to a desired temperature.
The above description is illustrative of the utility model and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, changes or equivalents may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. The preheating device used before thermocouple welding is characterized by comprising a shell (1), a heat conduction constant temperature device (2), a thermocouple fixing device (3) and a heating device (4); a heat conduction constant temperature device (2) is arranged in the shell (1); a heating device (4) is arranged in the heat conduction constant temperature device (2); a thermocouple fixing device (3) is arranged in the heating device (4); the heat preservation device (5) is filled between the shell (1) and the heat conduction constant temperature device (2), between the heating device (4) and the heat conduction constant temperature device (2), between the thermocouple fixing device (3) and the heating device (4) and inside the thermocouple fixing device (3).
2. The preheating device for the thermocouple according to claim 1, wherein the housing (1) has a rectangular parallelepiped structure made of a high-temperature-resistant metal material by sealing.
3. The preheating device for thermocouple welding according to claim 1, characterized in that the thermally conductive thermostatic device (2) is made of a stainless steel weld having a thermal conductivity of less than 40W/m-K and having thermodynamic isotropy, and is of cylindrical structure.
4. The preheating device for thermocouple welding according to claim 1, characterized in that the heating device (4) is constituted by several silicon carbide rods (6) in the energized state.
5. The preheating device for thermocouple welding according to claim 4, wherein the silicon carbide rods (6) are circumferentially arranged, in a number of at most 6.
6. The preheating device for the thermocouple according to claim 1, wherein the thermocouple fixing device (3) has a cylindrical structure, and at most 50 circular preheating thermocouples which are transversely arranged are simultaneously placed inside the device.
7. Preheating device for thermocouple welding according to claim 1, characterized in that the insulating device (5) is made of high temperature resistant cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026914.4U CN219026392U (en) | 2022-11-15 | 2022-11-15 | Preheating device used before thermocouple welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223026914.4U CN219026392U (en) | 2022-11-15 | 2022-11-15 | Preheating device used before thermocouple welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219026392U true CN219026392U (en) | 2023-05-16 |
Family
ID=86292050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223026914.4U Active CN219026392U (en) | 2022-11-15 | 2022-11-15 | Preheating device used before thermocouple welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219026392U (en) |
-
2022
- 2022-11-15 CN CN202223026914.4U patent/CN219026392U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3038951A (en) | Fast acting totally expendable immersion thermocouple | |
| CN104596661A (en) | Temperature-measuring armored thermocouple | |
| US2152153A (en) | Thermocouple | |
| CN219026392U (en) | Preheating device used before thermocouple welding | |
| KR20190053386A (en) | Insulation Socket for Heat Loss Prevention of Aerodynamic Heating Evaluation Device | |
| CN111337535A (en) | Heat pipe heat transfer performance testing device and testing method thereof | |
| CN107014513B (en) | Sleeve type platinum resistor temperature sensing device | |
| US3247714A (en) | Pyrometer | |
| CN104359570A (en) | Temperature sensor | |
| CN102944332B (en) | Protective tube for detecting high-temperature tungsten-rhenium thermocouple | |
| US2525439A (en) | Thermocouple | |
| Murthy et al. | Radiative Calibration of Heat Flux Sensors at NIST: An Overview | |
| JPH08316533A (en) | Thermoelectric conversion performance evaluation method and device | |
| Raj et al. | Temperature measurements in a laboratory scale furnace for manufacturing of silicon carbide through Acheson process | |
| RU154027U1 (en) | DEVICE FOR FASTENING SOFT HEAT-INSULATING MATERIALS FOR MEASURING HEAT CONDUCTIVITY AT HIGH TEMPERATURES | |
| CN209623895U (en) | A kind of fast-response platinum resistance temperature sensor | |
| US4411859A (en) | Gamma sensor having combined thermal bridge and centering means | |
| CN205540349U (en) | Temperature control device | |
| Kim et al. | Temperature measurement with radiation correction for very high temperature gas | |
| US2472808A (en) | Thermocouple junction with radiation shield | |
| De Corso et al. | Measurement of total emissivities of gas-turbine combustor materials | |
| CN218955960U (en) | Calibrating device for thermocouple detection | |
| RU2780306C1 (en) | High temperature thermocouple calibration system | |
| US2584616A (en) | Thermocouple device | |
| CN109827337A (en) | A kind of very fast electrothermal tube of accurate temperature control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |