Anti-corrosion thermocouple

Abstract

The utility model provides an anti-corrosion thermocouple, which relates to the technical field of thermocouples and comprises a mounting plate, fixing rods are symmetrically and fixedly connected to the top of the mounting plate, first mounting blocks are fixedly connected to the tops of the two fixing rods, and motors are fixedly connected to the tops of the first mounting blocks. When the cleaning device is used, the output end of the motor drives the threaded rod to rotate in the forward direction, so that when threads on the surface of an internal threaded block move downwards, two connecting rods can slide downwards between a limiting plate and a mounting plate synchronously, and when a second mounting block is pushed to move downwards, a cleaning block fixed to the inner side of the second mounting block can slide downwards in a manner of being attached to the outer surface of a protective sleeve; according to the utility model, the corrosion liquid adhering to the surface of the protected sleeve is downwards extruded and cleaned, so that the residual corrosion liquid on the surface of the protected sleeve vertically and downwards drips, the phenomenon that the thermocouple wire in the protected sleeve is corroded after the residual corrosion liquid on the surface continuously corrodes and penetrates the protected sleeve is avoided, and the anti-corrosion effect of the thermocouple is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to an anti-corrosion thermocouple. Background Art

[0002] A thermocouple is a commonly used temperature measuring element in temperature measuring instruments. It directly measures temperature and converts the temperature signal into a thermal electromotive force signal. The basic principle of thermocouple temperature measurement is that a closed loop is composed of two conductors of different compositions. When there is a temperature gradient at both ends, there will be current passing through the loop. At this time, there are electromotive force and thermal electromotive force between the two ends. The two homogeneous conductors of different compositions are the thermal electrodes. The end with higher temperature is the working end, and the end with lower temperature is the free end. The free end is usually at a certain constant temperature. Since a thermocouple is a passive sensor and does not require an external power supply during measurement, it is very convenient to use. Therefore, thermocouples are extremely widely used.

[0003] In the prior art, as a temperature testing tool, the thermocouple needs to be in contact with corrosive liquids frequently during the testing process. However, the existing thermocouple only simply sleeved a protective sleeve on its surface. After contacting the corrosive liquid, the corrosive liquid contaminated on the surface of the protective sleeve is likely to continuously corrode it, and then corrode the internal thermocouple wire, resulting in poor anti-corrosion effect. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that the existing thermocouple only simply sleeved a protective sleeve on its surface. After contacting the corrosive liquid, the corrosive liquid contaminated on the surface of the protective sleeve is likely to continuously corrode it, and then corrode the internal thermocouple wire, resulting in poor anti-corrosion effect, and to propose an anti-corrosion thermocouple.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an anti-corrosion thermocouple, comprising: a mounting plate, on the top of the mounting plate, fixing rods are symmetrically and fixedly connected, on the top of both fixing rods, first mounting blocks are fixedly connected, on the top of the first mounting block, a motor is fixedly connected, the output end of the motor rotates through the outer surface of the first mounting block, the output end of the motor is fixedly connected with a threaded rod, on the outer surface of the threaded rod, an internally threaded block is rotationally connected by threads, on the bottom of the internally threaded block, connecting rods are symmetrically and fixedly connected, on the bottom of both connecting rods, second mounting blocks are fixedly connected, and a cleaning block is arranged on the inner surface of the second mounting block.

[0006] Preferably, a thermocouple junction box is arranged at the center of the top of the mounting plate, and a protective sleeve is arranged at the center of the bottom of the thermocouple junction box.

[0007] Preferably, the outer surface of the protective sleeve fixedly penetrates through the outer surface of the mounting plate and extends downward, and the outer surface of the protective sleeve fits the inner surface of the cleaning block.

[0008] Preferably, limiting plates are fixedly connected to the outer surfaces of both fixing rods, and the inner surface of the limiting plate is rotatably connected to the outer surface of the threaded rod.

[0009] Preferably, the outer surface of the connecting rod is slidably connected to the inner surfaces of the limiting plate and the mounting plate respectively, and the second mounting block is located below the mounting plate.

[0010] Preferably, a protective shell is fixedly connected to the top edge of the mounting plate, and a sealing cover is arranged on the top of the protective shell.

[0011] Preferably, the outer surface of the sealing cover is threadedly rotatably connected to the inner surface of the protective shell, and wire harness holes are symmetrically opened on the top of the sealing cover.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. In the present utility model, during use, when the output end of the motor drives the threaded rod to rotate forward, such that when the internally threaded block moves downward in a threaded manner on its surface, the two connecting rods will synchronously slide down between the limiting plate and the mounting plate. When pushing the second mounting block downward, the cleaning block fixed inside it will slide down along the outer surface of the protective sleeve, squeezing the corrosive liquid contaminated on the surface of the protective sleeve downward, causing the residual corrosive liquid on its surface to drip vertically downward, avoiding the continuous corrosion and penetration of the protective sleeve by more residual corrosive liquid on its surface and then causing corrosion to the thermocouple wire inside, thereby improving the anti-corrosion effect of the thermocouple.

[0014] 2. In the present utility model, during use, by fixedly connecting a protective shell to the top of the mounting plate, and a sealing cover is threadedly rotatably connected to the inner surface near the top of the protective shell, it plays a protective role to prevent dust from entering, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of an anti-corrosion type thermocouple proposed by the present utility model;

[0016] Figure 2 is a partial structural schematic diagram of an anti-corrosion type thermocouple proposed by the present utility model;

[0017] Figure 3 is a structural schematic diagram of the second mounting block of an anti-corrosion type thermocouple proposed by the present utility model;

[0018] Figure 4 is a cross-sectional view of the protective shell of an anti-corrosion type thermocouple proposed by the present utility model.

[0019] Legend: 1. mounting plate; 2. protective case; 3. sealing cover; 4. thermocouple junction box; 5. protective sleeve; 6. fixing rod; 7. first mounting block; 8. motor; 9. internal thread block; 10. threaded rod; 11. connecting rod; 12. second mounting block; 13. cleaning block; 14. limiting plate; 15. wire harness hole. Detailed implementation

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0022] Embodiment 1: As Figures 1-4 shown, the present invention provides an anti-corrosion thermocouple, comprising: a mounting plate 1, fixing rods 6 are symmetrically and fixedly connected to the top of the mounting plate 1, first mounting blocks 7 are fixedly connected to the tops of the two fixing rods 6, a motor 8 is fixedly connected to the top of the first mounting block 7, the output end of the motor 8 rotatably penetrates the outer surface of the first mounting block 7, a threaded rod 10 is fixedly connected to the output end of the motor 8, an internal thread block 9 is threadedly and rotatably connected to the outer surface of the threaded rod 10, connecting rods 11 are symmetrically and fixedly connected to the bottom of the internal thread block 9, second mounting blocks 12 are fixedly connected to the bottoms of the two connecting rods 11, a cleaning block 13 is arranged on the inner surface of the second mounting block 12, a thermocouple junction box 4 is arranged at the center of the top of the mounting plate 1, a protective sleeve 5 is arranged at the center of the bottom of the thermocouple junction box 4, the outer surface of the protective sleeve 5 fixedly penetrates the outer surface of the mounting plate 1 and extends downward, the outer surface of the protective sleeve 5 is in fit with the inner surface of the cleaning block 13, limiting plates 14 are fixedly connected to the outer surfaces of the two fixing rods 6, the inner surface of the limiting plate 14 is rotatably connected to the outer surface of the threaded rod 10, the outer surfaces of the connecting rods 11 are respectively slidably connected to the inner surfaces of the limiting plate 14 and the mounting plate 1, and the second mounting block 12 is located below the mounting plate 1.

[0023] The effect achieved by the entire Embodiment 1 is that after the thermocouple measurement is completed, the motor 8 fixedly connected to the top of the first mounting block 7 is started, and the output end of the motor 8 rotates forward, driving the threaded rod 10 to rotate clockwise within the limiting plate 14. The limiting plate 14 is fixedly connected to the outer surface of the two fixing rods 6 near the middle position. The internally threaded block 9 moves downward along the surface of the threaded rod 10, causing the two connecting rods 11 to slide synchronously between the limiting plate 14 and the inner wall of the mounting plate 1. When driving the second mounting block 12 to move downward, the cleaning block 13 provided on its inner side will slide along the outer surface of the protective sleeve 5, squeezing the corrosive liquid contaminated on its surface downward, causing it to drip downward along the outer surface of the protective sleeve 5, playing a cleaning role, and avoiding the continuous corrosion and penetration of the protective sleeve 5 by more corrosive liquid on its surface, and then causing corrosion to the thermocouple wire inside, improving the anti-corrosion effect of the thermocouple.

[0024] Embodiment 2: As Figures 1-4 shown, a protective shell 2 is fixedly connected to the top edge of the mounting plate 1. A sealing cover 3 is provided on the top of the protective shell 2. The outer surface of the sealing cover 3 is rotationally connected to the inner surface of the protective shell 2 by threads. Wire harness holes 15 are symmetrically opened on the top of the sealing cover 3.

[0025] The effect achieved by the entire Embodiment 2 is that during use, the wire harness holes 15 are symmetrically opened on the top of the sealing cover 3, facilitating the wire harness to pass through and connect to the thermocouple junction box 4. By fixedly connecting the protective shell 2 to the top of the mounting plate 1 and rotationally connecting the sealing cover 3 to the inner surface of the protective shell 2 near the top by threads, a protective effect is achieved, preventing dust from entering, and it has high practicality.

[0026] Working principle: After the thermocouple measurement is completed, the motor 8 fixedly connected to the top of the first mounting block 7 is started, and the output end of the motor 8 rotates forward, driving the threaded rod 10 to rotate clockwise within the limiting plate 14. The limiting plate 14 is fixedly connected to the outer surface of the two fixing rods 6 near the middle position. The internally threaded block 9 moves downward along the surface of the threaded rod 10, causing the two connecting rods 11 to slide synchronously between the limiting plate 14 and the inner wall of the mounting plate 1. When driving the second mounting block 12 to move downward, the cleaning block 13 provided on its inner side will slide along the outer surface of the protective sleeve 5, squeezing the corrosive liquid contaminated on its surface downward, causing it to drip downward along the outer surface of the protective sleeve 5, playing a cleaning role, and avoiding the continuous corrosion and penetration of the protective sleeve 5 by more corrosive liquid on its surface, and then causing corrosion to the thermocouple wire inside. The wire harness holes 15 are symmetrically opened on the top of the sealing cover 3, facilitating the wire harness to pass through and connect to the thermocouple junction box 4. By fixedly connecting the protective shell 2 to the top of the mounting plate 1 and rotationally connecting the sealing cover 3 to the inner surface of the protective shell 2 near the top by threads, a protective effect is achieved, preventing dust from entering, and it has high practicality.

[0027] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An anti-corrosion thermocouple, characterized in that, Including: An installation plate (1), at the top of the installation plate (1), fixing rods (6) are symmetrically and fixedly connected. At the top of both fixing rods (6), first mounting blocks (7) are fixedly connected. At the top of the first mounting blocks (7), a motor (8) is fixedly connected. The output end of the motor (8) rotatably penetrates the outer surface of the first mounting block (7). The output end of the motor (8) is fixedly connected with a threaded rod (10). An internally threaded block (9) is in threaded rotational connection with the outer surface of the threaded rod (10). At the bottom of the internally threaded block (9), connecting rods (11) are symmetrically and fixedly connected. At the bottom of both connecting rods (11), second mounting blocks (12) are fixedly connected. A cleaning block (13) is arranged on the inner surface of the second mounting block (12).

2. The anti-corrosion thermocouple according to claim 1, characterized in that: At the center of the top of the installation plate (1), a thermocouple junction box (4) is arranged. At the center of the bottom of the thermocouple junction box (4), a protective sleeve (5) is arranged.

3. The anti-corrosion thermocouple according to claim 2, characterized in that: The outer surface of the protective sleeve (5) fixedly penetrates the outer surface of the installation plate (1) and extends downward. The outer surface of the protective sleeve (5) is in contact with the inner surface of the cleaning block (13).

4. The anti-corrosion thermocouple according to claim 3, characterized in that: Limit plates (14) are fixedly connected to the outer surfaces of both fixing rods (6). The inner surface of the limit plate (14) is in rotational connection with the outer surface of the threaded rod (10).

5. The anti-corrosion thermocouple according to claim 4, characterized in that: The outer surfaces of the connecting rods (11) are respectively in sliding connection with the inner surfaces of the limit plates (14) and the installation plate (1). The second mounting block (12) is located below the installation plate (1).

6. The anti-corrosion thermocouple according to claim 5, characterized in that: At the edge of the top of the installation plate (1), a protective shell (2) is fixedly connected. A sealing cover (3) is arranged on the top of the protective shell (2).

7. The anti-corrosion thermocouple according to claim 6, wherein: The outer surface of the sealing cover (3) is in threaded rotational connection with the inner surface of the protective shell (2). Wire harness holes (15) are symmetrically formed in the top of the sealing cover (3).

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