Thermocouple cooling protection device

Abstract

The utility model discloses a thermocouple cooling protection device, which comprises a thermocouple body, a protection cover and radiating fins, the thermocouple body is arranged in the protection cover, the bottom of the thermocouple body is provided with a detection end, the outer surface of the thermocouple body is provided with a protection sleeve, the surface of the protection sleeve is fixedly connected with a plurality of heat conducting fins, and the heat conducting fins are arranged in the protection sleeve. A connecting ring is fixedly connected to the position between the protective sleeve and the protective cover, the two sets of cooling fins are symmetrically arranged, the two sets of cooling fins are fixedly connected with the protective cover and penetrate through the protective cover to be fixedly connected with a heat conducting fin, and a cooling pipe is fixedly connected to the outer surface of the protective sleeve. The temperature change of the object to be measured is quickly sensed by the heat-conducting sheet, the obstruction of heat transfer is reduced, the response speed is improved, and the performance of the thermocouple body is effectively protected, so that the temperature of the thermocouple can be reduced, the thermocouple is prevented from being overheated, the service life of the thermocouple is prolonged, and the measurement precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic welding dust removal technology, and in particular to a thermocouple cooling protection device. Background Technology

[0002] The primary function of thermocouples is temperature measurement. They are widely used in temperature monitoring and automatic control of various industrial processes and equipment, and in real-time monitoring of temperature changes in critical components to ensure safe and stable equipment operation. When used in conjunction with a temperature recorder, thermocouples can record the temperature curve of the measured object over time, providing historical data on temperature changes for process analysis and fault diagnosis. They are widely used for temperature regulation and maintenance in various technological processes.

[0003] Thermocouples vary greatly in appearance depending on the application, but their basic structure is largely the same. They typically consist of thermocouples, insulating sheaths, protective tubes, and junction boxes. They are usually used with display instruments, recording instruments, and electronic controllers. However, thermocouples may overheat during use. Thermocouple cooling methods mainly include natural cooling and forced cooling. Natural cooling involves placing the thermocouple at room temperature and allowing it to dissipate heat through natural convection. This method is simple and requires no additional equipment, but the cooling rate is slow and may affect test accuracy. Forced cooling, on the other hand, uses specific equipment, such as a thermocouple cooler, to cool the thermocouple through forced fan circulation. This method offers fast cooling, improving test accuracy and stability, but requires specialized equipment and is relatively expensive. Therefore, to further improve the characteristics of thermocouple cooling protection devices—fast heat transfer and simple equipment—we propose a thermocouple cooling protection device to address the aforementioned issues. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a thermocouple cooling and protection device. By setting two sets of heat sinks on the protective cover of the thermocouple body, and using heat-conducting plates to quickly sense the temperature change of the measured object, and by leaving a certain gap between the heat-conducting plates and the protective cover, the resistance to heat transfer is reduced and the response speed is improved. Combined with the effect of the cooling medium inside the cooling pipe, the heat sinks can quickly dissipate the absorbed heat to the environment and effectively protect the performance of the thermocouple body. This can reduce the temperature of the thermocouple, prevent the thermocouple from overheating, and thus extend its service life and improve measurement accuracy.

[0005] This utility model also provides a thermocouple cooling protection device, comprising: a thermocouple body, a protective cover, and heat sinks. The thermocouple body is located inside the protective cover. A detection end is provided at the bottom of the thermocouple body. A protective sleeve is provided on the outer surface of the thermocouple body. A plurality of heat-conducting plates are fixedly connected to the surface of the protective sleeve. A connecting ring is fixedly connected between the protective sleeve and the protective cover. Two sets of heat sinks are symmetrically arranged. The two sets of heat sinks are fixedly connected to the protective cover and pass through the protective cover to be fixedly connected to the heat-conducting plates. A cooling pipe is fixedly connected to the outer surface of the protective sleeve.

[0006] According to the thermocouple cooling protection device of this utility model, the protective cover is made of ceramic, and a connecting block is fixedly connected to the upper surface of the protective cover. This provides the protective cover with high mechanical strength and good corrosion resistance.

[0007] According to the thermocouple cooling protection device of this utility model, a carbon head is fixedly connected to the upper surface of the connecting block, and the bottom surface of the connecting block is fixedly connected to the heat sink. This is used to improve thermal conductivity and ensure that the thermocouple body can maintain long-term stable measurement even in harsh environments.

[0008] According to the thermocouple cooling protection device of this utility model, a junction box is fixedly connected to the upper surface of the carbon head, and the carbon head is made of silicon carbide. It serves to provide connection terminals and protect the connecting wires.

[0009] According to the thermocouple cooling protection device of this utility model, the cooling tube is spiral-shaped, and the interior of the cooling tube contains a cooling medium, which is heat transfer oil. This allows the cooling medium to evenly surround the thermocouple body, creating a comprehensive cooling effect, avoiding localized overcooling or overheating, and resulting in a more uniform and stable temperature distribution.

[0010] According to the thermocouple cooling protection device of this utility model, an inlet pipe is fixedly connected to the upper end of the cooling pipe, and an outlet pipe is fixedly connected to the other end of the cooling pipe. This facilitates the entry and exit of hot oil into and out of the cooling pipe.

[0011] According to the thermocouple cooling protection device of this utility model, the inlet pipe and the outlet pipe respectively pass through the connecting block and are located above the heat sink, with the inlet pipe positioned higher than the outlet pipe. This is for easy differentiation between the inlet and outlet pipes.

[0012] According to the thermocouple cooling protection device of this utility model, the thermocouple body passes through the connecting block and is connected to the carbon head and junction box, and the length of the heat-conducting plate is less than the length of the connecting ring. This is used to reduce the damage of thermal stress to the heat-conducting plate and its solder joints, thereby improving the reliability of the thermocouple.

[0013] Beneficial effects: By setting two sets of heat sinks on the protective cover of the thermocouple body and using the heat-conducting plate to quickly sense the temperature change of the measured object, and by leaving a certain gap between the heat-conducting plate and the protective cover, the resistance to heat transfer is reduced and the response speed is improved. Combined with the effect of the cooling medium inside the cooling tube, the heat sink can quickly dissipate the absorbed heat to the environment and effectively protect the performance of the thermocouple body. This can reduce the temperature of the thermocouple, prevent the thermocouple from overheating, and thus extend its service life and improve measurement accuracy. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is an overall structural diagram of the thermocouple cooling protection device of this utility model;

[0016] Figure 2 This is a top view of the internal structure of the protective cover of the thermocouple cooling protection device of this utility model;

[0017] Figure 3 This is a structural diagram of the protective cover of the thermocouple cooling protection device of this utility model;

[0018] Figure 4 This is a side view of the thermocouple cooling protection device of this utility model.

[0019] Legend:

[0020] 1. Protective cover; 2. Heat sink; 21. Connecting ring; 22. Heat-conducting plate; 3. Connecting block; 4. Carbon head; 5. Junction box; 6. Detection end; 7. Protective sleeve; 8. Cooling pipe; 801. Liquid inlet pipe; 802. Liquid outlet pipe; 9. Thermocouple body. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4The thermocouple cooling protection device of this utility model includes: a thermocouple body 9, a protective cover 1, and a heat sink 2. The thermocouple body 9 is located inside the protective cover 1 to better protect the thermocouple body 9 from damage. A detection end 6 is provided at the bottom of the thermocouple body 9 for contact with the detected area. A protective sleeve 7 is provided on the outer surface of the thermocouple body 9 to protect the thermocouple body 9 and to transfer the heat of the thermocouple body 9 to the heat sink 2 through the heat-conducting plate 22. Several heat-conducting plates 22 are fixedly connected to the surface of the protective sleeve 7. A connecting ring 21 is fixedly connected between the protective sleeve 7 and the protective cover 1 to fix the heat-conducting plates 22. Two sets of heat sinks 2 are symmetrically arranged. The two sets of heat sinks 2 are fixedly connected to the protective cover 1 and pass through the protective cover 1 to be fixedly connected to the heat-conducting plates 22 to dissipate heat. A cooling pipe 8 is fixedly connected to the outer surface of the protective sleeve 7 to increase the heat transfer area and improve the heat conduction efficiency from the thermocouple body 9 to the cooling medium.

[0023] The protective cover 1 is made of ceramic, which provides it with strong mechanical strength and good corrosion resistance. A connecting block 3 is fixedly connected to the upper surface of the protective cover 1, which serves to connect the protective cover 1 and the carbon head 4. The carbon head 4 is fixedly connected to the upper surface of the connecting block 3. The bottom surface of the connecting block 3 is fixedly connected to the heat sink 2 to improve the thermal conductivity and ensure that the thermocouple body 9 can maintain long-term stable measurement even in harsh environments. A junction box 5 is fixedly connected to the upper surface of the carbon head 4. The carbon head 4 is made of silicon carbide and serves to provide connection terminals and protect the connection wires. The cooling pipe 8 is spiral-shaped and contains a cooling medium, specifically heat transfer oil, which evenly surrounds the thermocouple body 9, providing comprehensive cooling and preventing localized overcooling or overheating. This results in a more uniform and stable temperature distribution. The heat transfer oil also acts as a buffer, mitigating thermal expansion and contraction deformation of the thermocouple body 9 due to temperature changes. An inlet pipe 801 is fixedly connected to the upper end of the cooling pipe 8, and an outlet pipe 802 is fixedly connected to the other end, facilitating the flow of hot oil into and out of the cooling pipe 8 to cool the thermocouple body 9. The inlet pipe 801 and outlet pipe 802 pass through the connecting block 3, located above the heat sink 2. The inlet pipe 801 is positioned higher than the outlet pipe 802 for easy identification. The thermocouple body 9 passes through the connecting block 3 and connects to the carbon head 4 and junction box 5. The length of the heat-conducting plate 22 is shorter than the length of the connecting ring 21 to reduce thermal stress damage to the heat-conducting plate 22 and its solder joints, thus improving the overall reliability of the thermocouple.

[0024] Working principle: When using this thermocouple cooling protection device, the device is installed in a suitable position, and the detection end 6 of the thermocouple body 9 is inserted into the area to be detected. During the use of the device, a spiral cooling pipe 8 is provided on the surface of the protective cover 7 connected to the thermocouple body 1. The cooling pipe 8 contains heat transfer oil, which is transported by the inlet pipe 801 and the outlet pipe 802. The heat transfer oil itself also needs a special container or storage device to hold it. Usually, this heat transfer oil storage device is called an expansion tank. The expansion tank is generally located near the cooling device to provide a centralized heat transfer oil storage space for the entire cooling system. Therefore, the inlet pipe 801 and the outlet pipe 802 are connected to the expansion tank respectively. The flow of hot oil is used to carry away the heat of the thermocouple, and the heat is transferred to the heat sink 2 by the heat conduction plate 22, thereby dissipating the heat and preventing the thermocouple from overheating.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A thermocouple cooling protection device, characterized in that, include: Thermocouple body (9), protective cover (1), heat sink (2), the thermocouple body (9) is located inside the protective cover (1), the bottom of the thermocouple body (9) is provided with a detection end (6), the outer surface of the thermocouple body (9) is provided with a protective sleeve (7), the surface of the protective sleeve (7) is fixedly connected with several heat-conducting plates (22), the protective sleeve (7) and the protective cover (1) are fixedly connected with a connecting ring (21), the heat sink (2) is symmetrically arranged in two sets, the two sets of heat sink (2) are fixedly connected to the protective cover (1) respectively, and are fixedly connected to the heat-conducting plates (22) through the protective cover (1), and the outer surface of the protective sleeve (7) is fixedly connected with a cooling pipe (8).

2. The thermocouple cooling protection device according to claim 1, characterized in that, The protective cover (1) is made of ceramic, and a connecting block (3) is fixedly connected to the upper surface of the protective cover (1).

3. The thermocouple cooling protection device according to claim 2, characterized in that, The upper surface of the connecting block (3) is fixedly connected to a carbon head (4), and the bottom surface of the connecting block (3) is fixedly connected to the heat sink (2).

4. The thermocouple cooling protection device according to claim 3, characterized in that, A junction box (5) is fixedly connected to the upper surface of the carbon head (4), and the material of the carbon head (4) is silicon carbide.

5. The thermocouple cooling protection device according to claim 1, characterized in that, The cooling pipe (8) is spiral in shape, and the interior of the cooling pipe (8) contains a cooling medium, which is heat transfer oil.

6. The thermocouple cooling protection device according to claim 1, characterized in that, The upper end of the cooling pipe (8) is fixedly connected to the liquid inlet pipe (801), and the other end of the cooling pipe (8) is fixedly connected to the liquid outlet pipe (802).

7. The thermocouple cooling protection device according to claim 6, characterized in that, The inlet pipe (801) and outlet pipe (802) pass through the connecting block (3) and are located above the heat sink (2), with the inlet pipe (801) being higher than the outlet pipe (802).

8. The thermocouple cooling protection device according to claim 1, characterized in that, The thermocouple body (9) passes through the connecting block (3) and is connected to the carbon head (4) and junction box (5). The length of the heat-conducting plate (22) is less than the length of the connecting ring (21).

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