Self-cooling high-efficiency wear-resistant thermocouple device

Abstract

The utility model relates to the technical field of thermocouples, in particular to a self-cooling high-efficiency wear-resistant thermocouple device. The thermocouple comprises a thermocouple body, the tail of the thermocouple body is sleeved with a loop bar, and one side of the loop bar is provided with a plurality of protection devices. By rotating the junction box cover and the junction box seat, the convex wedge body and the concave wedge body are tightly clamped, so that the junction box cover and the junction box seat are sealed, substances such as water vapor are prevented from entering the cavity, the metal plate is folded upwards to enable the protective sleeve to be in contact with a measurement medium for measurement, and after measurement is completed, the device is taken out from the measurement medium, so that the measurement is completed. The contact area of the device and air is increased by unfolding the metal plates, so that the protective sleeve is cooled more quickly, the protective sleeve is wrapped by the metal plates by folding the metal plates downwards, the surface of the protective sleeve is prevented from being collided or covered by impurities, the service life of the device is effectively prolonged, and the service life of the device is prolonged. And the measurement precision of subsequent use is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, and more specifically, to a self-cooling and highly wear-resistant thermocouple device. Background Art

[0002] For the real-time on-line measurement of the temperature of a heating furnace or high-temperature molten liquid, when the front end of the temperature-measuring thermocouple is in a high-temperature waste gas environment or immersed in high-temperature molten liquid, the scouring, corrosion, and high temperature of the environmental substances will damage the protective sleeve of the temperature-measuring thermocouple. During storage, it is easy for the surface of the protective sleeve to become uneven or covered with impurities, which greatly affects its temperature and heat conductivity, and affects the measurement accuracy and service life of the thermocouple. Therefore, the use cost of traditional thermocouples is very expensive. At the same time, the existing thermocouples are cooled by natural cooling exposed to the air after use, and the cooling speed is slow, which affects the working efficiency. Summary of the Utility Model

[0003] The purpose of the present utility model is to provide a self-cooling and highly wear-resistant thermocouple device to solve the problems raised in the above background art.

[0004] To achieve the above object, the present utility model provides a self-cooling and highly wear-resistant thermocouple device, including a thermocouple main body. The thermocouple main body includes a protective sleeve, and two thermal electrodes are fixedly connected in the protective sleeve. A sleeve rod is sleeved on the protective sleeve, and the protective sleeve is tightly inserted into the sleeve rod. A plurality of protection devices are arranged on the side of the sleeve rod away from the protective sleeve. The protection device includes a plurality of connecting blocks, and the connecting blocks are fixedly installed on the outer side wall of the sleeve rod up and down. Both sides of the connecting block are hinged with connecting rods through pins, and one side of the connecting rod away from the sleeve rod is hinged with the connecting block through a pin. A metal plate is arranged on the side of the connecting rod away from the sleeve rod, and the side of the metal plate close to the sleeve rod is fixedly connected with the connecting blocks arranged up and down.

[0005] As a further improvement of the technical solution, the metal plate is set in a crescent shape, and the metal plate is longer than the sleeve rod.

[0006] As a further improvement of the technical solution, a plurality of protection devices are arranged in a circular array around the sleeve rod, and the protection devices are folded towards the sleeve rod.

[0007] As a further improvement of the technical solution, a junction box seat is arranged on the side of the protective sleeve away from the sleeve rod, and a plurality of convex wedges are fixedly installed on the junction box seat. A plurality of cylindrical protrusions are arranged on the side of the convex wedge away from the junction box cover.

[0008] As a further improvement of the technical solution, a junction box cover is arranged on the side of the junction box seat away from the protective sleeve, and a wire hole is opened on the junction box cover.

[0009] As a further improvement of the technical solution, several concave wedges are fixedly installed near the junction box cover on the junction box base. A number of cylindrical grooves are provided on the side of the concave wedge away from the junction box base, and the concave wedge and the convex wedge are clamped with each other.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] In this self-cooling and highly wear-resistant thermocouple device, the wire passes through the wire hole provided in the junction box cover and is connected to an external device. The junction box cover and the junction box base are rotated to make the convex wedge and the concave wedge tightly clamped, so as to seal between the junction box cover and the junction box base, avoiding the entry of substances such as water vapor into the cavity and damaging the thermal electrode and electronic components. By folding up the metal plate, the tail of the protection sleeve is exposed, and the temperature of the medium is measured by contacting the protection sleeve with the measuring medium. The measured data is transmitted to the external device through the wire. After use, the device is taken out of the measuring medium. By unfolding the metal plate, the contact area between the device and the air is increased, so that the protection sleeve cools faster. By folding down several metal plates, the metal plates wrap the protection sleeve, avoiding the surface of the protection sleeve from being bumped or covered by impurities, effectively prolonging the service life of the device and ensuring the measurement accuracy of subsequent use. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the utility model;

[0013] Figure 2 is the structural schematic diagram of the thermocouple main body of the utility model;

[0014] Figure 3 is the structural schematic diagram of the thermocouple main body of the utility model.

[0015] The meanings of each label in the figure are as follows:

[0016] 1. Thermocouple main body; 11. Protection sleeve; 12. Junction box base; 13. Convex wedge; 14. Concave wedge; 15. Junction box cover;

[0017] 2. Protection device; 21. Metal plate; 22. Connecting block; 23. Link rod;

[0018] 3. Sleeve rod. Detailed Implementation Modes

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] Embodiment 1

[0022] Please refer to Figures 1 - 3 As shown, this embodiment provides a self-cooling and highly wear-resistant thermocouple device, which includes a thermocouple main body 1. The thermocouple main body 1 includes a protective sleeve 11. Two thermo-electrodes are fixedly connected in the protective sleeve 11. By joining the two ends of the thermo-electrodes with two different compositions in the protective sleeve 11 to form a loop, when the temperatures of the two joints are different, an electromotive force will be generated in the loop, converting thermal energy into electrical energy, and using the generated thermo-electromotive force to measure the temperature. When in use, the protective sleeve 11 is placed in the measuring container. One side of the protective sleeve 11 is fixedly installed with a junction box seat 12. A junction box cover 15 is arranged on the side of the junction box seat 12 away from the protective sleeve 11. A cavity is formed by sealing the junction box seat 12 and the junction box cover 15. Electronic components, wires, etc. are placed in the cavity. A wire hole is opened on the side wall of the junction box cover 15, and the wire passes through the wire hole and is connected to an external device. A plurality of convex wedges 13 are fixedly installed on one side of the convex wedge body 13 close to the junction box cover 15. A plurality of cylindrical protrusions are arranged on the side of the convex wedge body 13 away from the junction box cover 15. A plurality of concave wedges 14 are fixedly installed on one side of the junction box cover 15 close to the convex wedge body 13. A plurality of cylindrical grooves are opened on the side of the concave wedge 14 away from the junction box seat 12. Through the corresponding protrusions and grooves provided by the convex wedge body 13 and the concave wedge body 14, when in use, by rotating the junction box seat 12 and the junction box cover 15, the convex wedge body 13 and the concave wedge body 14 are tightly clamped together, so that the junction box seat 12 and the junction box cover 15 can be quickly sealed, effectively improving the usability of the device.

[0023] A sleeve rod 3 is sleeved on the protective sleeve 11. The heat on the protective sleeve 11 is transferred to the sleeve rod 3 through the close contact between the sleeve rod 3 and the protective sleeve 11. The sleeve rod 3 has a larger contact area with the air, thereby increasing the self-cooling speed of the device. On one side of the sleeve rod 3, there are several protection devices 2. The protection devices 2 are arranged in an annular array around the sleeve rod 3. The protection devices 2 are folded towards the sleeve rod 3. By unfolding the annularly arranged protection devices 2, the contact area between the device and the air is further increased to improve the heat dissipation speed of the protective sleeve 11. By folding the protection devices 2 to wrap the protective sleeve 11, damage or contamination of the protective sleeve 11 is avoided. The protection device 2 includes several connecting blocks 22. The connecting blocks 22 are fixedly installed at both ends of the sleeve rod 3 in an up-and-down arrangement. A connecting rod 23 is hinged to the side wall of the connecting block 22 through a pin. On the side of the connecting rod 23 away from the sleeve rod 3, there is a metal plate 21. On the side of the metal plate 21 close to the sleeve rod 3, connecting blocks 22 are fixedly installed in an up-and-down arrangement. The metal plate 21 is hinged to the connecting rod 23 through the connecting block 22, so that the metal plate 21 is folded towards the sleeve rod 3, so that the crescent-shaped long metal plate 21 wraps the head or tail of the protective sleeve 11 when folded. When using the device, the tail of the protective sleeve 11 is exposed by folding the metal plate 21 upwards, so as to facilitate temperature measurement. When the device is used up, the metal plate 21 is unfolded to increase the contact area between the device and the air, thereby increasing the self-cooling speed of the device. When the device needs to be put away, the metal plate 21 is folded towards the tail of the protective sleeve 11, so that the metal plate 21 wraps the protective sleeve 11, avoiding the surface of the protective sleeve 11 from becoming uneven or being covered by impurities due to friction and collision during storage, effectively prolonging the service life of the device and avoiding affecting the measurement accuracy during subsequent reuse.

[0024] When the self-cooling and highly wear-resistant thermocouple device of this embodiment is specifically used, the electric wire passes through the wire hole of the junction box cover 15 and is connected to an external device. By rotating the junction box cover 15 and the junction box seat 12, the convex wedge 13 and the concave wedge 14 are tightly clamped, so that the junction box cover 15 and the junction box seat 12 are sealed, avoiding moisture and other substances from entering the cavity and damaging the thermoelectrode and electronic components. By folding the metal plate 21 upwards, the tail of the protective sleeve 11 is exposed. The temperature of the medium is measured by the contact between the protective sleeve 11 and the measuring medium. The measured data is transmitted to the external device through the electric wire. After use, the device is taken out of the measuring medium. By unfolding the metal plate 21, the contact area between the device and the air is increased, so that the protective sleeve 11 cools faster. By folding several metal plates 21 downwards, the metal plates 21 wrap the protective sleeve 11, avoiding the surface of the protective sleeve 11 from being knocked or covered by impurities, effectively prolonging the service life of the device and ensuring the measurement accuracy of subsequent use.

[0025] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-cooling, high-efficiency, wear-resistant thermocouple device, comprising a thermocouple body (1), wherein the thermocouple body (1) comprises a protective sleeve (11), wherein two thermoelectrodes are fixedly connected in the protective sleeve (11), and a sleeve rod (3) is sleeved on the protective sleeve (11), wherein: The protective sleeve (11) is tightly inserted into the sleeve rod (3); a plurality of protective devices (2) are arranged on the side of the sleeve rod (3) away from the protective sleeve (11); the protective devices (2) include a plurality of connecting blocks (22); the connecting blocks (22) are fixedly mounted on the outer side walls of the sleeve rod (3) from top to bottom; connecting rods (23) are hinged on both sides of the connecting blocks (22) via latches; the side of the connecting rod (23) away from the sleeve rod (3) is hinged to the connecting block (22) via latches; a metal plate (21) is arranged on the side of the connecting rod (23) away from the sleeve rod (3); the side of the metal plate (21) close to the sleeve rod (3) is fixedly connected to the connecting blocks (22) arranged above and below.

2. The self-cooling, high-efficiency, wear-resistant thermocouple device according to claim 1, characterized in that: The metal plate (21) is configured to be crescent-shaped, and the metal plate (21) is longer than the sleeve rod (3).

3. The self-cooling, high-efficiency, wear-resistant thermocouple device according to claim 1, characterized in that: A plurality of the protective devices (2) are arranged in an annular array around the sleeve rod (3), and the protective devices (2) are folded towards the sleeve rod (3).

4. The self-cooling, high-efficiency, wear-resistant thermocouple device according to claim 1, characterized in that: A junction box seat (12) is provided on the side of the protective sleeve (11) away from the sleeve rod (3), a plurality of convex wedges (13) are fixedly mounted on the junction box seat (12), and a plurality of cylindrical protrusions are provided on the side of the convex wedges (13) away from the junction box cover (15).

5. The self-cooling, high-efficiency, wear-resistant thermocouple device according to claim 4, characterized in that: A junction box cover (15) is provided on a side of the junction box seat (12) away from the protective sleeve (11), and a wire hole is provided on the junction box cover (15).

6. The self-cooling, high-efficiency, wear-resistant thermocouple device according to claim 5, characterized in that: The junction box cover (15) is fixedly mounted with a plurality of concave wedges (14) close to the junction box seat (12); a plurality of cylindrical grooves are formed on a side of the concave wedges (14) away from the junction box seat (12); and the concave wedges (14) and the convex wedges (13) are mutually engaged.

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