High-temperature heating rod with sheathed thermocouple

Abstract

The utility model relates to a high-temperature heating rod with a sheathed thermocouple, which belongs to the technical field of high-temperature heating and comprises a shell, two annular grooves are arranged on the outer side of the shell, replaceable temperature measuring components used for detecting heating temperature are mounted in the two annular grooves, and a rotary heating component is fixedly mounted in the shell. According to the utility model, the replacement convenience of the thermocouple main body is significantly improved through the replaceable temperature measurement assembly, and an operator can rapidly position and replace the thermocouple main body without dismounting the whole heating rod or contacting a complex internal structure, thereby not only saving the maintenance cost, but also ensuring the accurate temperature measurement of the thermocouple main body in the annular groove; and meanwhile, the rotary heating assembly is utilized, so that planetary revolution motion of the mineral insulated heating cable in the shell is realized, heat accumulation is effectively avoided, uniform temperature distribution in the shell is ensured, and the heating efficiency and the quality stability of a heated product are improved.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature heating technology, and in particular to a high-temperature heating rod with an armored thermocouple. Background Technology

[0002] High-temperature heating rods are heating devices that convert electrical energy into heat energy to generate high temperatures. They are used in various scenarios such as industry, laboratories, and homes. Traditional high-temperature heating rods commonly suffer from problems in industrial applications, such as the difficulty in fixing, replacing, and maintaining thermocouple detection points. Since thermocouples are usually embedded or sealed within the internal structure of the heating rod, if the temperature sensing element fails or needs calibration, the entire heating rod must be disassembled for repair or replacement, which is time-consuming, labor-intensive, and affects production efficiency. At the same time, conventional static heating methods can easily lead to uneven heat distribution inside the heating rod's outer shell. Localized overheating or cold spots caused by the fixed arrangement of mineral-insulated heating cables can affect heating efficiency and the temperature uniformity and quality stability of the heated products. In addition, the contradiction between reliable thermocouple fixation and accurate temperature measurement in harsh high-temperature environments also restricts the improvement of equipment performance. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, this utility model provides a high-temperature heating rod with armored thermocouple, which has the effects of easy replacement of temperature measuring components and efficient and uniform heating.

[0004] The technical solution adopted by this utility model is as follows: it includes a shell, and two annular grooves are provided on the outer side of the shell. A replaceable temperature measuring component for detecting the heating temperature is installed inside the two annular grooves. A rotating heating component is fixedly installed inside the shell.

[0005] Preferably, in order to quickly and thoroughly inspect and replace the thermocouple body, the replaceable temperature measuring assembly includes a first semi-annular frame and a second semi-annular frame, both of which are disposed inside the annular groove, and the thermocouple body is fixedly installed on the outer side of both the first semi-annular frame and the second semi-annular frame.

[0006] Preferably, for the installation of the magnet holder, both ends of the first semi-annular frame are provided with grooves, and the magnet holder is fixed inside each of the two grooves.

[0007] Preferably, in order to assemble and disassemble the first semi-circular frame and the second semi-circular frame, magnet blocks are fixed at both ends of the second semi-circular frame. The magnet blocks are inserted into the magnet frame and are magnetically attracted to the magnet frame.

[0008] Preferably, for uniform heating, the rotary heating assembly includes two internal gear rings, both of which are fixedly installed on the inner wall of the outer casing. Each internal gear ring has a sun gear and three planet gears inside. The three planet gears are located outside the sun gear and are meshed with both the internal gear ring and the sun gear. A mineral-insulated heating cable is fixedly installed between two planet gears that are not located on the same internal gear ring.

[0009] Preferably, in order to drive the connecting shaft to rotate, a motor is fixedly installed on the inner wall of the bottom of the housing, and the connecting shaft is installed at the output end of the motor.

[0010] Preferably, in order to drive the two sun gears to rotate simultaneously, the other end of the connecting shaft passes through one of the sun gears and is fixedly installed at the bottom of the other sun gear.

[0011] Preferably, in order to heat the material, the mineral-insulated heating cable uses multiple alloy heating wires as the heating core.

[0012] The beneficial effects of this utility model are as follows: By setting an annular groove on the outside of the heating rod shell and installing a replaceable temperature measuring component, and using the magnetic attraction fixing method between the magnet frame in the groove and the magnet block on the second half of the annular frame, the convenience of replacing the thermocouple body is significantly improved. Operators can quickly locate and replace the thermocouple body without disassembling the entire heating rod or contacting the complex internal structure. This not only saves maintenance costs but also ensures that the thermocouple body accurately measures the temperature in the annular groove. At the same time, by using a rotating heating component, the planetary revolution motion of the mineral insulated heating cable is realized within the shell, effectively avoiding heat accumulation, ensuring uniform temperature distribution inside the shell, and improving heating efficiency and the stability of the heated product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the outer shell structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 4 This is a structural breakdown diagram of the replaceable temperature measuring component of this utility model.

[0017] Figure 5 This is a schematic diagram of the rotating heating component of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Outer shell; 2. Replaceable temperature measuring component; 201. First semi-annular frame; 202. Magnet frame; 203. Second semi-annular frame; 204. Magnet block; 205. Thermocouple body; 3. Annular groove; 4. Rotary heating component; 401. Motor; 402. Connecting shaft; 403. Internal gear ring; 404. Sun gear; 405. Planetary gears; 406. Mineral insulated heating cable. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1-5 As shown, this embodiment provides a high-temperature heating rod with an armored thermocouple, including a shell 1. Two annular grooves 3 are provided on the outer side of the shell 1. A replaceable temperature measuring component 2 for detecting the heating temperature is installed inside each of the two annular grooves 3. A rotating heating component 4 is fixedly installed inside the shell 1.

[0021] In actual use, the operator first connects the heating rod to the power supply. The rotating heating component 4 can heat the heating rod evenly. The dynamic change of the heating contact points can avoid local overheating caused by heat accumulation, which improves the heating efficiency and extends the service life of the high-temperature heating rod. The replaceable temperature measuring component 2 can detect the real-time heating temperature. There are two replaceable temperature measuring components 2 located at both ends of the outer shell 1, which allows the temperature at different locations to be detected, improving the accuracy of subsequent thermal calculations.

[0022] As a technical optimization solution of this utility model, specifically as follows: Figure 4 As shown, the replaceable temperature measuring component 2 includes a first semi-annular frame 201 and a second semi-annular frame 203. Both the first semi-annular frame 201 and the second semi-annular frame 203 are disposed inside the annular groove 3. Thermocouple bodies 205 are fixedly installed on the outer sides of both the first semi-annular frame 201 and the second semi-annular frame 203. Thermocouple bodies 205 can measure temperature in real time. Both ends of the first semi-annular frame 201 are provided with grooves, and magnet frames 202 are fixed inside both grooves. Both ends of the second semi-annular frame 203 are fixed with magnet blocks 204. The magnet blocks 204 are inserted into the magnet frames 202 and are magnetically attracted to the magnet frames 202.

[0023] In use, operators can disassemble and assemble the first semi-annular frame 201 and the second semi-annular frame 203 by the magnetic attraction between the magnet block 204 and the magnet frame 202, thereby achieving the effect of quick replacement or repair of the thermocouple body 205. This not only improves work efficiency but also effectively reduces maintenance costs. At the same time, to ensure the stability of the thermocouple body 205 in the annular groove 3, a strong magnetic attraction design is adopted between the magnet block 204 and the magnet frame 202, making it difficult for the thermocouple body 205 to shift during temperature measurement and ensuring the accuracy of temperature measurement.

[0024] As a technical optimization solution of this utility model, specifically as follows: Figure 5 As shown, the rotary heating assembly 4 includes two internal gear rings 403, both of which are fixedly mounted on the inner wall of the outer casing 1. The inner walls of the internal gear rings 403 are provided with teeth. Each internal gear ring 403 contains a sun gear 404 and three planet gears 405. The three planet gears 405 are located outside the sun gear 404 and mesh with both the internal gear ring 403 and the sun gear 404. A mineral-insulated heating cable 406 is fixedly installed between two planet gears 405 that are not located on the same internal gear ring 403. A motor 401 is fixedly mounted on the bottom inner wall of the outer casing 1. A connecting shaft 402 is installed at the output end of the motor 401. The connecting shaft 402 is further... One end passes through one of the sun gears 404 and is fixedly installed at the bottom of the other sun gear 404. The mineral-insulated heating cable 406 uses multiple alloy heating wires as the heating core. The alloy heating wires have high resistivity and melting point, enabling them to work stably in high-temperature environments. At the same time, the alloy heating wires have high heating efficiency, which can quickly convert electrical energy into heat energy, thus improving heating efficiency. Furthermore, the mineral-insulated heating cable 406 uses electrofused crystalline magnesium oxide powder as the thermally conductive insulator and seamless continuous stainless steel or copper tube as the outer sheath, enabling the mineral-insulated heating cable 406 to work for a long time in high-temperature and high-pressure environments, with high stability and service life.

[0025] In use, the motor 401 is started, causing the output end of the motor 401 to drive the connecting shaft 402 to rotate. When the connecting shaft 402 rotates, it drives the two sun gears 404 to rotate synchronously. When the two sun gears 404 rotate, they respectively drive the three planet gears 405 to revolve within the internal gear ring 403. Since the three planet gears 405 are located outside the sun gears 404 and are meshed with both the internal gear ring 403 and the sun gears 404, the three planet gears 405 are evenly distributed at equal angles when they revolve. A mineral-insulated heating cable 406 is fixedly installed between two planet gears 405 that are not located on the same internal gear ring 403. The mineral-insulated heating cable 406 achieves uniform heating of the inside of the outer shell 1 as the planet gears 405 revolve, effectively avoiding heat accumulation, ensuring uniform temperature distribution inside the outer shell 1, and improving heating efficiency and the stability of the heated product quality.

[0026] In addition, the meshing of the planetary gear 405 with the internal gear ring 403 and the sun gear 404 also has a certain self-locking function, which can maintain the stable position of the mineral insulated heating cable 406 when the motor 401 stops working, and prevent it from being displaced due to gravity or other external forces, thus ensuring the safety and reliability of the heating rod.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A high-temperature heating rod with an armored thermocouple, comprising a shell (1), characterized in that: The outer shell (1) has two annular grooves (3) on its outer side. Each of the two annular grooves (3) is equipped with a replaceable temperature measuring component (2) for detecting the heating temperature. A rotating heating component (4) is fixedly installed inside the outer shell (1).

2. A high-temperature heating rod with an armored thermocouple according to claim 1, characterized in that: The replaceable temperature measuring component (2) includes a first semi-annular frame (201) and a second semi-annular frame (203). The first semi-annular frame (201) and the second semi-annular frame (203) are both disposed inside the annular groove (3). Thermocouple bodies (205) are fixedly installed on the outside of the first semi-annular frame (201) and the second semi-annular frame (203).

3. A high-temperature heating rod with an armored thermocouple according to claim 2, characterized in that: The first semi-annular frame (201) has grooves at both ends, and magnet frames (202) are fixed inside the two grooves.

4. A high-temperature heating rod with an armored thermocouple according to claim 3, characterized in that: The second semi-circular frame (203) has magnet blocks (204) fixed at both ends. The magnet blocks (204) are inserted into the magnet frame (202) and are magnetically attracted to the magnet frame (202).

5. A high-temperature heating rod with an armored thermocouple according to claim 1, characterized in that: The rotary heating assembly (4) includes an internal gear ring (403), and there are two internal gear rings (403) which are fixedly installed on the inner wall of the outer shell (1). Each internal gear ring (403) is provided with a sun gear (404) and three planet gears (405). The three planet gears (405) are located outside the sun gear (404) and are meshed with the internal gear ring (403) and the sun gear (404). A mineral-insulated heating cable (406) is fixedly installed between two planet gears (405) that are not located on the same internal gear ring (403).

6. A high-temperature heating rod with an armored thermocouple according to claim 5, characterized in that: A motor (401) is fixedly installed on the bottom inner wall of the outer casing (1), and a connecting shaft (402) is installed at the output end of the motor (401).

7. A high-temperature heating rod with an armored thermocouple according to claim 6, characterized in that: The other end of the connecting shaft (402) passes through one of the sun gears (404) and is fixedly mounted on the bottom of the other sun gear (404).

8. A high-temperature heating rod with an armored thermocouple according to claim 7, characterized in that: The mineral-insulated heating cable (406) uses multiple alloy heating wires as the heating core.

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