Temperature measuring device for pipe thermal spraying and measuring method thereof

Abstract

The invention discloses a temperature measuring device for pipe thermal spraying and a measuring method thereof, belongs to the technical field of temperature measurement, and provides the following scheme that the temperature measuring device comprises a movable base and a thermocouple body, a driving structure and a rotating structure are installed on the movable base, and the thermocouple body is installed on the rotating structure; by arranging the driving structure, the rotating structure and the thermocouple bodies, when the inner wall of a pipe needs to be subjected to thermal spraying treatment and the temperature of the inner wall of the pipe needs to be measured, the testing ends of all the thermocouple bodies are rotated to the state deviating from the axis of the driving shaft, and when the outer wall of the pipe needs to be subjected to thermal spraying treatment, the testing ends of all the thermocouple bodies are rotated to the state deviating from the axis of the driving shaft; when the temperature of the outer wall of the pipe is measured, the test ends of all the thermocouple bodies are rotated to a state pointing to the axis of the driving shaft, so that an operator can flexibly adjust the orientation of the test ends of the thermocouple bodies, and the temperature measuring device can flexibly measure the temperature of the outer wall or the inner wall of the pipe. And the adaptability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature measurement, and in particular to a temperature measuring device and a measuring method thereof for thermal spraying of pipes. Background Art

[0002] Temperature is a key factor influencing coating adhesion and density, playing a crucial role in the pipe thermal spraying process. Specifically, the temperature conditions of the particles, substrate, and deposition area directly determine the bond strength between the coating and the substrate, as well as the coating's density. Therefore, before thermal spraying pipes, operators must utilize precise temperature measurement to ensure that the coating forms under optimal temperature conditions. This significantly improves coating adhesion and density, ensuring the ultimate coating quality.

[0003] However, the limitations of traditional temperature measuring devices are particularly prominent when faced with complex and ever-changing pipe shapes and sizes. Especially when measuring the temperature of the inner and outer walls of pipes, these traditional devices are often unable to flexibly adjust the position of the measuring probe. On the one hand, this will lead to inaccurate measurement results and affect the spraying quality. On the other hand, it will make the operation process too cumbersome, increase the workload of operators, and reduce efficiency. For example, many traditional temperature measuring devices still use a fixed or manually adjustable design, which cannot flexibly adjust the direction of the probe according to the temperature measurement requirements of the inner and outer walls of the pipe. When the operator needs to measure the temperature of the inner and outer walls of the pipe, he has to adjust it manually, which not only greatly reduces the temperature measurement efficiency, but may also lead to deviations in the measurement results due to inaccurate human operation.

[0004] Furthermore, traditional temperature measurement devices have significant shortcomings when it comes to adapting to pipes of varying diameters. Due to the varying diameters of pipes, traditional fixed measurement probes often struggle to achieve a close fit with the pipe surface, compromising the accuracy of measurement results. To address this, operators often need to replace probes of different sizes or perform complex adjustments. This not only increases workload but can also introduce additional measurement errors due to frequent replacement and adjustments, further impacting the accuracy of temperature measurements.

[0005] More seriously, most traditional temperature measurement devices can only measure the temperature at a specific location on the pipe surface. When the pipe is large, measuring the temperature at only one location clearly cannot fully reflect the overall temperature of the pipe, resulting in one-sided and inaccurate temperature measurements. In extreme cases, such inaccurate temperature measurements may even lead operators to make incorrect judgments, negatively impacting the quality of the thermally sprayed pipe. To address these issues, this invention proposes a temperature measurement device and method for thermal spraying pipes. Summary of the Invention

[0006] To address the shortcomings and deficiencies in the above-mentioned prior art, the present invention proposes a temperature measuring device capable of flexibly adjusting the orientation of the test end of the thermocouple body. This allows the operator to flexibly adjust the measuring probe to measure the temperature of the inner or outer wall of the pipe by rotating the test end of the thermocouple body to a position away from or toward the axis of the drive shaft according to actual needs. This device is not only conducive to accurately measuring the temperature of the inner or outer wall of the pipe, but also allows measurement of different positions on the surface of the pipe by adjusting the base and the rolling wheel, making it more suitable for measuring the temperature of pipes of different diameters. This temperature measuring device and its measurement method for thermal spraying of pipes have strong adaptability and flexibility, are easy to operate, safe and reliable, and highly efficient.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A temperature measuring device for thermal spraying of pipes, comprising a movable base and a thermocouple body, wherein a driving structure and a rotating structure are mounted on the movable base, the thermocouple body is mounted on the rotating structure, and the driving structure drives the thermocouple body to rotate via the rotating structure, the movable base is provided with a pushing structure, the thermocouple body is provided with a limiting structure, and the pushing structure adjusts the limiting structure, the limiting structure is provided with an adjusting structure for pushing the thermocouple body, and the limiting structure is provided with a protective structure for protecting itself; The driving structure includes a driving motor installed on a mobile base, and a driving shaft rotatably connected to the inside of the mobile base. The output end of the driving motor is fixedly connected to the driving shaft, and a protective plate is fixedly connected to the end of the driving shaft. A mounting ring is fixedly connected to the protective plate. Several groups of teeth are arranged inside the mounting ring. The rotating structure includes several rotating shafts rotatably connected to the inside of the mobile base. Gears are fixedly connected to the outside of the rotating shafts. The gears are fixedly connected to a group of teeth close to each other, and the thermocouple body is slidably connected to the close rotating shaft.

[0008] Preferably, the protective plate is provided with a plurality of slide grooves, and the rotating shaft passes through adjacent slide grooves.

[0009] Preferably, the pushing structure includes several mounting rods fixedly connected to the side of the mobile base, all of the mounting rods are fixedly connected to the same mounting plate, an electric push rod is installed on the mounting plate, and a pushing plate is fixedly connected to the movable rod of the electric push rod, and the pushing plate is provided with several through holes for the rotating shaft to pass through.

[0010] Preferably, the limiting structure includes a first limiting plate fixedly connected to the outer wall of the thermocouple body, a telescopic rod fixedly connected to the first limiting plate, and an end of the telescopic rod away from the first limiting plate is fixedly connected to a second limiting plate, the second limiting plate is rotatably connected to a connecting plate, and the end of the connecting plate away from the second limiting plate is rotatably connected to the pushing plate.

[0011] Preferably, a spring is fixedly connected to the first limiting plate, and one end of the spring away from the first limiting plate is fixedly connected to the adjacent second limiting plate.

[0012] Preferably, the adjustment structure includes a vertical plate fixedly connected to the second limit plate, the vertical plate is rotatably connected to two rolling wheels, the rolling wheels are fixedly connected to an adjustment plate, and the two adjustment plates are rotatably connected to the same fixed plate at one end away from the rolling wheels, and the fixed plate is fixedly connected to the adjacent thermocouple body.

[0013] Preferably, the vertical plate is located between the two rolling wheels, and the two adjustment plates are located on the sides of the two rolling wheels that are away from each other.

[0014] Preferably, the protective structure includes a first protective sleeve fixedly connected to the second limiting plate, a second protective sleeve is slidably connected inside the first protective sleeve, and the second protective sleeve is fixedly connected to the adjacent first limiting plate.

[0015] Preferably, the spring and the telescopic rod are both located inside the adjacent first protective sleeve and the second protective sleeve, and the spring sleeve is arranged outside the adjacent telescopic rod.

[0016] The measuring method of the temperature measuring device for pipe thermal spraying comprises the following steps: S1. When the operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying, the drive motor can be turned on to drive the protective plate to rotate through the drive shaft. When the protective plate drives the mounting ring to rotate, the gear drives the thermocouple body to rotate through the rotating shaft under the cooperation of the teeth. When the inner wall of the pipe needs to be thermally sprayed and the temperature of the inner wall of the pipe needs to be measured, the test ends of all the thermocouple bodies are rotated to a state away from the axis of the drive shaft. When the outer wall of the pipe needs to be thermally sprayed and the temperature of the outer wall of the pipe needs to be measured, the test ends of all the thermocouple bodies are rotated to a state pointing to the axis of the drive shaft. S2. The operator can adjust the electric push rod. When the electric push rod performs telescopic movement, it drives the push plate to move on the outer wall of the rotating shaft, so that the push plate drives all the second limit plates to move closer to or away from each other through the connecting plate. Under the elastic force of the spring, the first limit plate can drive the thermocouple body to move synchronously; S3. When the thermocouple body and the rolling wheel are tightly fitted to the surface of the pipe, the thermocouple body works and can directly measure the temperature of the pipe. After one measurement is completed, the mobile base moves, so that the rotating shaft and the pipe surface are relatively displaced. Since the rolling wheel is in contact with the pipe surface, the rolling wheel automatically rotates at this time, so that the rolling wheel pushes the fixed plate through the adjustment plate to move closer to the second limit plate. The fixed plate drives the thermocouple body to move, so that the thermocouple body is released from the contact state with the pipe. At this time, the thermocouple body drives the first limit plate to move, so that the first limit plate moves away from the second limit plate, thereby stretching the spring. As the mobile base moves, the rolling wheel continues to rotate until the thermocouple body is in contact with the pipe again, thereby measuring the temperature of the second position on the pipe surface.

[0017] Compared with the prior art, the present invention provides a temperature measurement device for pipe thermal spraying, which has the following beneficial effects: 1. The temperature measuring device for thermal spraying of pipes is provided with a drive structure, a rotating structure and a thermocouple body. When an operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying the pipe, the drive motor can be turned on, so that the drive motor drives the protective plate to rotate through the drive shaft. When the protective plate drives the mounting ring to rotate, the gear drives the thermocouple body to rotate through the rotating shaft under the cooperation of the teeth. When the inner wall of the pipe needs to be thermally sprayed and the temperature of the inner wall of the pipe needs to be measured, the test ends of all the thermocouple bodies are rotated to a state away from the axis of the drive shaft. When the outer wall of the pipe needs to be thermally sprayed and the temperature of the outer wall of the pipe needs to be measured, the test ends of all the thermocouple bodies are rotated to a state pointing to the axis of the drive shaft. This allows the operator to flexibly adjust the direction of the test ends of the thermocouple bodies, so that the temperature measuring device can flexibly measure the temperature of the outer wall or inner wall of the pipe, and has strong adaptability.

[0018] 2. The temperature measuring device for thermal spraying of pipes is provided with a pushing structure and a limiting structure, so that the operator can adjust the electric push rod. When the electric push rod performs telescopic movement, it drives the pushing plate to move on the outer wall of the rotating shaft, so that the pushing plate drives all the second limiting plates to move closer to or away from each other through the connecting plate. Under the elastic force of the spring, the first limiting plate can drive the thermocouple body to move synchronously, so that the temperature measuring device can be applied to pipes of different diameters.

[0019] 3. The temperature measuring device for thermal spraying of pipes is provided with an adjustment structure. When the thermocouple body and the rolling wheel are in close contact with the surface of the pipe, the thermocouple body works and can directly measure the temperature of the pipe. After one measurement is completed, the mobile base moves so that the rotating shaft and the surface of the pipe are relatively displaced. Since the rolling wheel is in contact with the surface of the pipe, the rolling wheel automatically rotates at this time, so that the rolling wheel pushes the fixed plate to move closer to the second limit plate through the adjustment plate. The fixed plate drives the thermocouple body to move, so that the thermocouple body is released from the contact state with the pipe. At this time, the thermocouple body drives the first limit plate to Movement causes the first limit plate to move away from the second limit plate, thereby stretching the spring. As the mobile base moves, the rolling wheel continues to rotate until the thermocouple body is in contact with the pipe again, thereby measuring the temperature at different positions on the pipe surface. The operator does not need to manually adjust the position of the thermocouple body, which improves the operator's operating convenience, ensures measurement efficiency and accuracy, and thus ensures the quality of the pipe produced by subsequent thermal spraying. At the same time, it can avoid friction between the thermocouple body and the pipe when it moves on the pipe surface, provide a certain protection for the thermocouple body, and ensure the service life of the temperature measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional view of a temperature measuring device for thermal spraying of pipes proposed by the present invention; Figure 2 A view of the mobile base, driving structure, rotating structure and thermocouple body connection structure of the present invention; Figure 3 A view of the connecting structure of the movable base, the driving motor, the rotating structure and the thermocouple body of the present invention; Figure 4 A view of the push plate, the limiting structure, the protective structure, the adjusting structure and the thermocouple body connection structure of the present invention; Figure 5 A view of the second limiting plate, connecting plate, adjusting structure and thermocouple body connecting structure of the present invention; Figure 6 A view of the connection structure of the vertical plate, the rolling wheel, the adjustment plate and the fixed plate of the present invention; Figure 7 For the present invention Figure 2 A magnified view of point A; Figure 8 For the present invention Figure 5 Enlarged view of point B.

[0021] In the figure: 1. Mobile base; 2. Driving structure; 201. Driving motor; 202. Driving shaft; 203. Protective plate; 204. Mounting ring; 205. Teeth; 206. Slide groove; 3. Rotating structure; 301. Rotating shaft; 302. Gear; 4. Thermocouple body; 5. Pushing structure; 501. Mounting rod; 502. Mounting plate; 503. Electric push rod; 504. Pushing plate; 6. Limiting structure; 601. First limiting plate; 602. Telescopic rod; 603. Second limiting plate; 604. Connecting plate; 605. Spring; 7. Protective structure; 701. First protective cover; 702. Second protective cover; 8. Adjusting structure; 801. Vertical plate; 802. Rolling wheel; 803. Adjusting plate; 804. Fixed plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] Example 1: Reference Figure 1-Figure 3 A temperature measuring device for thermal spraying of pipes includes a movable base 1 and a thermocouple body 4. A driving structure 2 and a rotating structure 3 are installed on the movable base 1. The thermocouple body 4 is installed on the rotating structure 3, and the driving structure 2 drives the thermocouple body 4 to rotate through the rotating structure 3. A pushing structure 5 is provided on the movable base 1. A limiting structure 6 is provided on the thermocouple body 4, and the pushing structure 5 adjusts the limiting structure 6. The limiting structure 6 is provided with an adjusting structure 8 for pushing the thermocouple body 4. The limiting structure 6 is installed with a protective structure 7 for protecting itself; The driving structure 2 includes a driving motor 201 installed on the mobile base 1, and a driving shaft 202 rotatably connected to the inside of the mobile base 1. The output end of the driving motor 201 is fixedly connected to the driving shaft 202, and the end of the driving shaft 202 is fixedly connected to a protective plate 203, and a mounting ring 204 is fixedly connected to the protective plate 203. A plurality of groups of teeth 205 are arranged inside the mounting ring 204. The rotating structure 3 includes a plurality of rotating shafts 301 rotatably connected to the inside of the mobile base 1. A gear 302 is fixedly connected to the outside of the rotating shaft 301. The gear 302 is fixedly connected to a group of teeth 205 adjacent to the rotating shaft 301. The thermocouple body 4 is slidably connected to the adjacent rotating shaft 301.

[0025] In the present invention, a plurality of slide grooves 206 are provided on the protective plate 203, and the rotating shaft 301 passes through the adjacent slide grooves 206. By providing the slide grooves 206 and setting the rotating shaft 301 to pass through the adjacent slide grooves 206, the rotating shaft 301 is prevented from intercepting the rotation of the mounting ring 204, thereby ensuring that the driving motor 201 can drive the protective plate 203 and the mounting ring 204 to rotate through the driving shaft 202.

[0026] In the present invention, the pushing structure 5 includes a plurality of mounting rods 501 fixedly connected to the side of the mobile base 1, all of the mounting rods 501 are fixedly connected to the same mounting plate 502, the mounting plate 502 is installed with an electric push rod 503, the movable rod of the electric push rod 503 is fixedly connected to a pushing plate 504, and the pushing plate 504 is provided with a plurality of through holes for the rotating shaft 301 to pass through. The limiting structure 6 includes a first limiting plate 601 fixedly connected to the outer wall of the thermocouple body 4, the first limiting plate 601 is fixedly connected to a telescopic rod 602, and the end of the telescopic rod 602 away from the first limiting plate 601 is fixedly connected to a second limiting plate 603, the second limiting plate 603 is rotatably connected to a connecting plate 604, and the connecting plate 604 is away from the second limiting plate One end of the positioning plate 603 is rotatably connected to the pushing plate 504, and a spring 605 is fixedly connected to the first limiting plate 601. The end of the spring 605 away from the first limiting plate 601 is fixedly connected to the adjacent second limiting plate 603. By setting the pushing structure 5 and the limiting structure 6, the operator can adjust the electric push rod 503. When the electric push rod 503 performs telescopic movement, it drives the pushing plate 504 to move on the outer wall of the rotating shaft 301, so that the pushing plate 504 drives all the second limiting plates 603 to move closer to or away from each other through the connecting plate 604. Under the elastic force of the spring 605, the first limiting plate 601 can drive the thermocouple body 4 to move synchronously, so that the temperature measuring device can be suitable for pipes of different diameters.

[0027] In the present invention, the adjustment structure 8 includes a vertical plate 801 fixedly connected to the second limit plate 603, and two rolling wheels 802 are rotatably connected to the vertical plate 801. The rolling wheel 802 is fixedly connected to the adjustment plate 803. The ends of the two adjustment plates 803 away from the rolling wheel 802 are rotatably connected to the same fixed plate 804. The fixed plate 804 is fixedly connected to the adjacent thermocouple body 4. The vertical plate 801 is located between the two rolling wheels 802, and the two adjustment plates 803 are located on the side of the two rolling wheels 802 away from each other. By setting the adjustment structure 8, when the thermocouple body 4 and the rolling wheel 802 are tightly fitted with the surface of the pipe, the thermocouple body 4 works and can directly measure the temperature of the pipe. After one measurement is completed, the mobile base 1 moves, so that the rotating shaft 301 and the surface of the pipe are relatively displaced. Since the rolling wheel 802 is in contact with the surface of the pipe, the rolling wheel 802 automatically rotates at this time. As a result, the rolling wheel 802 pushes the fixed plate 804 to move closer to the second limit plate 603 through the adjustment plate 803, and the fixed plate 804 drives the thermocouple body 4 to move, so that the thermocouple body 4 is released from the contact state with the pipe. At this time, the thermocouple body 4 drives the first limit plate 601 to move, so that the first limit plate 601 moves away from the second limit plate 603, thereby stretching the spring 605. As the mobile base 1 moves, the rolling wheel 802 continues to rotate until the thermocouple body 4 is in contact with the pipe again, thereby measuring the temperature at different positions on the pipe surface. There is no need for the operator to manually adjust the position of the thermocouple body 4, which improves the operator's operating convenience and ensures measurement efficiency. At the same time, it can avoid the thermocouple body 4 from rubbing against the pipe when moving on the pipe surface, provide a certain protection for the thermocouple body 4, and ensure the service life of the temperature measuring device.

[0028] Example 2: Reference Figures 1-8 A temperature measuring device for thermal spraying of pipes includes a movable base 1 and a thermocouple body 4. A driving structure 2 and a rotating structure 3 are installed on the movable base 1. The thermocouple body 4 is installed on the rotating structure 3, and the driving structure 2 drives the thermocouple body 4 to rotate through the rotating structure 3. A pushing structure 5 is provided on the movable base 1. A limiting structure 6 is provided on the thermocouple body 4, and the pushing structure 5 adjusts the limiting structure 6. The limiting structure 6 is provided with an adjusting structure 8 for pushing the thermocouple body 4. The limiting structure 6 is installed with a protective structure 7 for protecting itself; The driving structure 2 includes a driving motor 201 installed on the mobile base 1, and a driving shaft 202 rotatably connected to the inside of the mobile base 1. The output end of the driving motor 201 is fixedly connected to the driving shaft 202, and the end of the driving shaft 202 is fixedly connected to a protective plate 203, and a mounting ring 204 is fixedly connected to the protective plate 203. A plurality of groups of teeth 205 are arranged inside the mounting ring 204. The rotating structure 3 includes a plurality of rotating shafts 301 rotatably connected to the inside of the mobile base 1. A gear 302 is fixedly connected to the outside of the rotating shaft 301. The gear 302 is fixedly connected to a group of teeth 205 adjacent to the rotating shaft 301. The thermocouple body 4 is slidably connected to the adjacent rotating shaft 301.

[0029] In the present invention, a plurality of slide grooves 206 are provided on the protective plate 203, and the rotating shaft 301 passes through the adjacent slide grooves 206. By providing the slide grooves 206 and setting the rotating shaft 301 to pass through the adjacent slide grooves 206, the rotating shaft 301 is prevented from intercepting the rotation of the mounting ring 204, thereby ensuring that the driving motor 201 can drive the protective plate 203 and the mounting ring 204 to rotate through the driving shaft 202.

[0030] In the present invention, the pushing structure 5 includes a plurality of mounting rods 501 fixedly connected to the side of the mobile base 1, all of the mounting rods 501 are fixedly connected to the same mounting plate 502, the mounting plate 502 is installed with an electric push rod 503, the movable rod of the electric push rod 503 is fixedly connected to a pushing plate 504, and the pushing plate 504 is provided with a plurality of through holes for the rotating shaft 301 to pass through. The limiting structure 6 includes a first limiting plate 601 fixedly connected to the outer wall of the thermocouple body 4, the first limiting plate 601 is fixedly connected to a telescopic rod 602, and the end of the telescopic rod 602 away from the first limiting plate 601 is fixedly connected to a second limiting plate 603, the second limiting plate 603 is rotatably connected to a connecting plate 604, and the connecting plate 604 is away from the second limiting plate One end of the positioning plate 603 is rotatably connected to the pushing plate 504, and a spring 605 is fixedly connected to the first limiting plate 601. The end of the spring 605 away from the first limiting plate 601 is fixedly connected to the adjacent second limiting plate 603. By setting the pushing structure 5 and the limiting structure 6, the operator can adjust the electric push rod 503. When the electric push rod 503 performs telescopic movement, it drives the pushing plate 504 to move on the outer wall of the rotating shaft 301, so that the pushing plate 504 drives all the second limiting plates 603 to move closer to or away from each other through the connecting plate 604. Under the elastic force of the spring 605, the first limiting plate 601 can drive the thermocouple body 4 to move synchronously, so that the temperature measuring device can be suitable for pipes of different diameters.

[0031] In the present invention, the adjustment structure 8 includes a vertical plate 801 fixedly connected to the second limit plate 603, and two rolling wheels 802 are rotatably connected to the vertical plate 801. The rolling wheel 802 is fixedly connected to the adjustment plate 803. The ends of the two adjustment plates 803 away from the rolling wheel 802 are rotatably connected to the same fixed plate 804. The fixed plate 804 is fixedly connected to the adjacent thermocouple body 4. The vertical plate 801 is located between the two rolling wheels 802, and the two adjustment plates 803 are located on the side of the two rolling wheels 802 away from each other. By setting the adjustment structure 8, when the thermocouple body 4 and the rolling wheel 802 are tightly fitted with the surface of the pipe, the thermocouple body 4 works and can directly measure the temperature of the pipe. After one measurement is completed, the mobile base 1 moves, so that the rotating shaft 301 and the surface of the pipe are relatively displaced. Since the rolling wheel 802 is in contact with the surface of the pipe, the rolling wheel 802 automatically rotates at this time. As a result, the rolling wheel 802 pushes the fixed plate 804 to move closer to the second limit plate 603 through the adjustment plate 803, and the fixed plate 804 drives the thermocouple body 4 to move, so that the thermocouple body 4 is released from the contact state with the pipe. At this time, the thermocouple body 4 drives the first limit plate 601 to move, so that the first limit plate 601 moves away from the second limit plate 603, thereby stretching the spring 605. As the mobile base 1 moves, the rolling wheel 802 continues to rotate until the thermocouple body 4 is in contact with the pipe again, thereby measuring the temperature at different positions on the pipe surface. There is no need for the operator to manually adjust the position of the thermocouple body 4, which improves the operator's operating convenience and ensures measurement efficiency. At the same time, it can avoid the thermocouple body 4 from rubbing against the pipe when moving on the pipe surface, provide a certain protection for the thermocouple body 4, and ensure the service life of the temperature measuring device.

[0032] In the present invention, the protective structure 7 includes a first protective sleeve 701 fixedly connected to the second limit plate 603, and a second protective sleeve 702 is slidably connected inside the first protective sleeve 701. The second protective sleeve 702 is fixedly connected to the adjacent first limit plate 601. The spring 605 and the telescopic rod 602 are both located inside the adjacent first protective sleeve 701 and the second protective sleeve 702, and the spring 605 is sleeved on the outside of the adjacent telescopic rod 602. By arranging the first protective sleeve 701 and the second protective sleeve 702, the spring 605 and the telescopic rod 602 can be shielded and protected to prevent damage to them by foreign objects, thereby ensuring that the rolling wheel 802 can normally push the thermocouple body 4 to move, so that the temperature measuring device can stably measure and process the temperature at different positions on the surface of the pipe.

[0033] Working principle: When the operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying, the driving motor 201 can be turned on to make the driving motor 201 drive the protective plate 203 to rotate through the driving shaft 202. When the protective plate 203 drives the mounting ring 204 to rotate, the gear 302 drives the thermocouple body 4 to rotate through the rotating shaft 301 with the cooperation of the teeth 205. When the inner wall of the pipe needs to be thermally sprayed and the temperature of the inner wall of the pipe needs to be measured, the test ends of all the thermocouple bodies 4 are rotated to a state away from the axis of the driving shaft 202. When the outer wall of the pipe needs to be thermally sprayed and the temperature of the outer wall of the pipe needs to be measured, the test ends of all the thermocouple bodies 4 are rotated to a state pointing to the axis of the driving shaft 202. The operator can adjust the electric push rod 503. When the electric push rod 503 performs telescopic movement, it drives the push plate 504 to move on the outer wall of the rotating shaft 301, so that the push plate 504 drives all the second limit plates 603 to move closer to or away from each other through the connecting plate 604. Under the elastic force of the spring 605, the first limit plate 601 can drive the thermocouple body 4 to move synchronously. When the thermocouple body 4 and the rolling wheel 802 are tightly fitted with the surface of the pipe, the thermocouple body 4 works and can directly measure the temperature of the pipe. After one measurement is completed, the mobile base 1 moves, so that the rotating shaft 301 and the pipe surface are relatively displaced. Since the rolling wheel 802 is in contact with the pipe surface, the rolling wheel 802 automatically rotates at this time, so that the rolling wheel 802 pushes the fixed plate 804 through the adjustment plate 803 to move closer to the second limit plate 603. The fixed plate 804 drives the thermocouple body 4 to move, so that the thermocouple body 4 is released from the contact state with the pipe. At this time, the thermocouple body 4 drives the first limit plate 601 to move, so that the first limit plate 601 moves away from the second limit plate 603, thereby stretching the spring 605. As the mobile base 1 moves, the rolling wheel 802 continues to rotate until the thermocouple body 4 is in contact with the pipe again, so that the temperature of the second position on the pipe surface is measured again.

[0034] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A temperature measuring device for thermal spraying of pipes, comprising a movable base (1) and a thermocouple body (4), characterized in that: The movable base (1) is provided with a driving structure (2) and a rotating structure (3); the thermocouple body (4) is installed on the rotating structure (3); the driving structure (2) drives the thermocouple body (4) to rotate via the rotating structure (3); the movable base (1) is provided with a pushing structure (5); the thermocouple body (4) is provided with a limiting structure (6); the pushing structure (5) adjusts the limiting structure (6); the limiting structure (6) is provided with an adjusting structure (8) for pushing the thermocouple body (4); and the limiting structure (6) is provided with a protective structure (7) for protecting itself; The driving structure (2) comprises a driving motor (201) mounted on a mobile base (1), and a driving shaft (202) rotatably connected to the inside of the mobile base (1); the output end of the driving motor (201) is fixedly connected to the driving shaft (202), and a protective plate (203) is fixedly connected to the end of the driving shaft (202); a mounting ring (204) is fixedly connected to the protective plate (203); a plurality of groups of teeth (205) are arranged inside the mounting ring (204); the rotating structure (3) comprises a plurality of rotating shafts (301) rotatably connected to the inside of the mobile base (1); a gear (302) is fixedly connected to the outside of the rotating shaft (301); the gear (302) is fixedly connected to a group of teeth (205) close to the outside of the rotating shaft (301); the thermocouple body (4) is slidably connected to the close rotating shaft (301).

2. A temperature measuring device for thermal spraying of pipes according to claim 1, characterized in that: A plurality of slide grooves (206) are provided on the protection plate (203), and the rotating shaft (301) passes through adjacent slide grooves (206).

3. A temperature measuring device for thermal spraying of pipes according to claim 2, characterized in that: The pushing structure (5) comprises a plurality of mounting rods (501) fixedly connected to the side of the movable base (1); all the mounting rods (501) are fixedly connected to the same mounting plate (502); an electric push rod (503) is mounted on the mounting plate (502); a push plate (504) is fixedly connected to the movable rod of the electric push rod (503); and a plurality of through holes for the rotating shaft (301) to pass through are provided on the push plate (504).

4. A temperature measuring device for thermal spraying of pipes according to claim 3, characterized in that: The limiting structure (6) comprises a first limiting plate (601) fixedly connected to the outer wall of the thermocouple body (4); a telescopic rod (602) is fixedly connected to the first limiting plate (601); an end of the telescopic rod (602) away from the first limiting plate (601) is fixedly connected to a second limiting plate (603); a connecting plate (604) is rotatably connected to the second limiting plate (603); and an end of the connecting plate (604) away from the second limiting plate (603) is rotatably connected to the pushing plate (504).

5. A temperature measuring device for thermal spraying of pipes according to claim 4, characterized in that: A spring (605) is fixedly connected to the first limiting plate (601), and one end of the spring (605) away from the first limiting plate (601) is fixedly connected to the second limiting plate (603) closer to the first limiting plate (601).

6. A temperature measuring device for thermal spraying of pipes according to claim 5, characterized in that: The adjustment structure (8) includes a vertical plate (801) fixedly connected to the second limit plate (603), the vertical plate (801) is rotatably connected to two rolling wheels (802), the rolling wheels (802) are fixedly connected to an adjustment plate (803), and the ends of the two adjustment plates (803) away from the rolling wheels (802) are rotatably connected to the same fixed plate (804), and the fixed plate (804) is fixedly connected to a nearby thermocouple body (4).

7. A temperature measuring device for thermal spraying of pipes according to claim 6, characterized in that: The vertical plate (801) is located between the two rolling wheels (802), and the two adjustment plates (803) are located on a side of the two rolling wheels (802) that is away from each other.

8. A temperature measuring device for thermal spraying of pipes according to claim 7, characterized in that: The protective structure (7) comprises a first protective sleeve (701) fixedly connected to the second limiting plate (603), a second protective sleeve (702) being slidably connected inside the first protective sleeve (701), and the second protective sleeve (702) being fixedly connected to the adjacent first limiting plate (601).

9. A temperature measuring device for thermal spraying of pipes according to claim 8, characterized in that: The spring (605) and the telescopic rod (602) are both located inside the adjacent first protective sleeve (701) and the second protective sleeve (702), and the spring (605) is sleeved outside the adjacent telescopic rod (602).

10. The measuring method of the temperature measuring device for thermal spraying of pipes according to claim 9, characterized in that: The following steps are involved: S1. When the operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying, the driving motor (201) can be turned on so that the driving motor (201) drives the protection plate (203) to rotate via the driving shaft (202). When the protection plate (203) drives the mounting ring (204) to rotate, the gear (302) drives the thermocouple body (4) to rotate via the rotating shaft (301) with the cooperation of the teeth (205). When thermal spraying is required on the inner wall of the pipe and the temperature of the inner wall of the pipe is measured, the test ends of all the thermocouple bodies (4) are rotated to a state away from the axis of the driving shaft (202). When thermal spraying is required on the outer wall of the pipe and the temperature of the outer wall of the pipe is measured, the test ends of all the thermocouple bodies (4) are rotated to a state pointing to the axis of the driving shaft (202). S2. The operator can adjust the electric push rod (503). When the electric push rod (503) performs telescopic movement, it drives the push plate (504) to move on the outer wall of the rotating shaft (301), so that the push plate (504) drives all the second limit plates (603) to move closer to or away from each other through the connecting plate (604). Under the elastic force of the spring (605), the first limit plate (601) can drive the thermocouple body (4) to move synchronously; S3. When the thermocouple body (4) and the rolling wheel (802) are in close contact with the surface of the pipe, the thermocouple body (4) works to directly measure the temperature of the pipe. After one measurement is completed, the movable base (1) moves so that the rotating shaft (301) and the surface of the pipe are relatively displaced. Since the rolling wheel (802) is in close contact with the surface of the pipe, the rolling wheel (802) automatically rotates, so that the rolling wheel (802) pushes the fixed plate (804) to move closer to the second limit plate (603) through the adjustment plate (803). The fixed plate (804) drives the thermocouple body (4) to move, so that the thermocouple body (4) is released from the state of being in contact with the pipe. At this time, the thermocouple body (4) drives the first limit plate (601) to move, so that the first limit plate (601) moves away from the second limit plate (603), thereby stretching the spring (605). As the movable base (1) moves, the rolling wheel (802) continues to rotate until the thermocouple body (4) is in contact with the pipe again, so that the temperature of the second position on the surface of the pipe is measured again.

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