A temperature measuring device and a measuring method for thermal spraying of pipes

Abstract

The invention discloses a temperature measuring device and a measuring method for thermal spraying of a pipe, belonging to the technical field of temperature measurement. The following scheme is proposed, which comprises a movable base and a thermocouple body, wherein 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 body, when it is necessary to perform thermal spraying treatment on the inner wall of the pipe and measure the temperature of the inner wall of the pipe, the test ends of all the thermocouple bodies are rotated to a state away from the axis of the driving shaft; when it is necessary to perform thermal spraying treatment on the outer wall of the pipe and measure the temperature of the outer wall of the pipe, 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 direction of the test end of the thermocouple body, so that the temperature measuring device can flexibly measure and process the temperature of the outer wall or the inner wall of the pipe, and has strong adaptability.

Description

Technical Field

[0001] The 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 core factor that affects the adhesion and density of the coating, and plays a vital role in the thermal spraying process of pipes. Specifically, the temperature conditions of the particles, substrate, and deposition area directly determine the bonding strength between the coating and the substrate and the density of the coating. Therefore, before thermal spraying the pipe, the operator must use accurate temperature measurement methods to ensure that the coating can be formed under the most suitable temperature conditions, thereby significantly improving the adhesion and density of the coating and ensuring the final coating quality.

[0003] However, the limitations of traditional temperature measuring devices are particularly prominent when faced with complex and changeable pipe shapes and sizes. Especially when measuring the temperature of the inner and outer walls of the pipe, these traditional devices are often unable to flexibly adjust the position of the measuring probe, which will lead to inaccurate measurement results and affect the spraying quality on the one hand, and make the operation process too cumbersome, increase the workload of operators, and reduce efficiency on the other hand. For example, many traditional temperature measuring devices still use fixed or manually adjustable designs, and 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 also may cause deviations in the measurement results due to inaccurate manual operation.

[0004] In addition, traditional temperature measurement devices also have obvious shortcomings in adapting to pipes of different diameters. Due to the different diameters of pipes, traditional fixed measurement probes are often difficult to fit tightly with the pipe surface, which affects the accuracy of the measurement results. To solve this problem, operators usually need to replace probes of different sizes or make complex adjustments, which not only increases the workload, but may also introduce additional measurement errors due to frequent replacement and adjustment, further affecting the accuracy of the temperature measurement results.

[0005] What is more serious is that most traditional temperature measurement devices can only measure the temperature of a certain local position on the surface of the pipe. When the volume of the pipe is large, measuring the temperature at only one place obviously cannot fully reflect the overall temperature condition of the pipe, resulting in one-sidedness and inaccuracy of the temperature measurement results. In extreme cases, such inaccurate temperature measurement results may even cause operators to make wrong judgments, which in turn has an adverse effect on the quality of the pipe processed by thermal spraying. In response to the above problems, the present invention document proposes a temperature measurement device and measurement method for thermal spraying of pipes. Summary of the invention

[0006] In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the present invention proposes a temperature measuring device with the ability to flexibly adjust the direction of the test end of the thermocouple body, which is convenient for the operator to flexibly adjust the measuring probe to measure the temperature of the inner wall or outer wall of the pipe by rotating the test end of the thermocouple body to a position away from or pointing to the axis of the drive shaft according to actual needs. It is not only conducive to accurately measuring the temperature of the inner wall or outer wall of the pipe, but also can achieve measurement of different positions on the surface of the pipe by adjusting the base and the rolling wheel, and is more suitable for temperature measurement of pipes of different diameters. The temperature measuring device and 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:

[0008] A temperature measuring device for thermal spraying of pipes, comprising a mobile base and a thermocouple body, wherein a driving structure and a rotating structure are installed on the mobile base, the thermocouple body is installed on the rotating structure, and the driving structure drives the thermocouple body to rotate through the rotating structure, a pushing structure is arranged on the mobile base, a limiting structure is arranged on the thermocouple body, and the pushing structure adjusts the limiting structure, an adjusting structure for pushing the thermocouple body is arranged on the limiting structure, and a protective structure for protecting itself is installed on the limiting structure;

[0009] 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, and a plurality of groups of teeth are arranged inside the mounting ring, the rotating structure includes a plurality of rotating shafts rotatably connected to the inside of the mobile base, a gear is fixedly connected to the outside of the rotating shaft, the gear is fixedly connected to a group of teeth close to it, and the thermocouple body is slidably connected to the close rotating shaft.

[0010] Preferably, a plurality of slide grooves are arranged on the protective plate, and the rotating shaft passes through adjacent slide grooves.

[0011] Preferably, the pushing structure includes a plurality of 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, a push plate is fixedly connected to the movable rod of the electric push rod, and a plurality of through holes for the rotating shaft to pass through are provided on the push plate.

[0012] 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 an end of the connecting plate away from the second limiting plate is rotatably connected to the pushing plate.

[0013] 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 second limiting plate close thereto.

[0014] 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, 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 a nearby thermocouple body.

[0015] 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.

[0016] 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.

[0017] Preferably, the spring and the telescopic rod are both located inside the first protective cover and the second protective cover that are close to each other, and the spring sleeve is arranged outside the telescopic rod that is close to each other.

[0018] The measuring method of the temperature measuring device for thermal spraying of pipes comprises the following steps:

[0019] S1. When the operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying, the driving motor can be turned on to drive the protective plate to rotate through the driving 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 can be rotated to a state away from the axis of the driving 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 can be rotated to a state pointing to the axis of the driving shaft.

[0020] 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;

[0021] 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 to cause relative displacement between the rotating shaft and the surface of the pipe. 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 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, so that the spring is stretched. With the movement of the mobile base, the rolling wheel continues to rotate until the thermocouple body is in contact with the pipe again, so as to measure the temperature of the second position on the surface of the pipe.

[0022] Compared with the prior art, the present invention provides a temperature measuring device for pipe thermal spraying, which has the following beneficial effects:

[0023] 1. The temperature measuring device for thermal spraying of pipes is provided with a driving structure, a rotating structure and a thermocouple body. When the operator needs to use the temperature measuring device to measure the temperature of the pipe before thermal spraying the pipe, the driving motor can be turned on to drive the protective plate to rotate through the driving 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 driving 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 driving shaft, so that the operator can flexibly adjust the direction of the test end of the thermocouple body, 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.

[0024] 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 suitable for pipes of different diameters.

[0025] 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 closely attached 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 surface of the pipe are relatively displaced. Since the rolling wheel is attached to the surface of the pipe, the rolling wheel automatically rotates at this time, so that the rolling wheel pushes the fixed plate to move close to the second limit plate through the adjustment plate, and the fixed plate drives the thermocouple body to move, so that the thermocouple body is released from the state of being attached to the pipe. At this time, the thermocouple body drives the first limit plate to move. 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 fits the pipe again, so that the temperature of different positions on the pipe surface can be measured again. There is no need for the operator 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 processed 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

[0026] Figure 1 A three-dimensional view of a temperature measuring device for thermal spraying of pipes proposed by the present invention;

[0027] Figure 2 A view of the mobile base, the driving structure, the rotating structure and the thermocouple body connection structure of the present invention;

[0028] Figure 3 A view of the mobile base, the driving motor, the rotating structure and the thermocouple body connection structure of the present invention;

[0029] Figure 4 It is 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;

[0030] Figure 5 A view of the second limit plate, the connecting plate, the adjusting structure and the thermocouple body connecting structure of the present invention;

[0031] 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;

[0032] Figure 7 For the present invention Figure 2 A magnified view of point A;

[0033] Figure 8 For the present invention Figure 5 Enlarged view of point B.

[0034] 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. fixing plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example 1: Reference Figure 1-Figure 3 , a temperature measuring device for thermal spraying of pipes, comprising a mobile base 1 and a thermocouple body 4, a driving structure 2 and a rotating structure 3 are installed on the mobile 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 arranged on the mobile base 1, a limiting structure 6 is arranged 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, and the limiting structure 6 is installed with a protective structure 7 for protecting itself;

[0038] 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 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, and 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.

[0039] In the present invention, a plurality of slide grooves 206 are arranged on the protective plate 203, and the rotating shaft 301 passes through the adjacent slide grooves 206. By setting 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.

[0040] 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 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, and 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 second limiting plate 603 close thereto. 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.

[0041] In the present invention, 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 wheel 802 is 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, 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 to 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, so that the spring 605 is stretched. With the movement of the mobile base 1, the rolling wheel 802 continues to rotate until the thermocouple body 4 is in contact with the pipe again, so as to measure the temperature at different positions on the surface of the pipe again. The operator does not need to manually adjust the position of the thermocouple body 4, which improves the operator's operating convenience and ensures the measurement efficiency. At the same time, it can avoid the friction between the thermocouple body 4 and the pipe when it moves on the surface of the pipe, provide a certain protection for the thermocouple body 4, and ensure the service life of the temperature measuring device.

[0042] Example 2: Reference Figure 1-Figure 8 , a temperature measuring device for thermal spraying of pipes, comprising a mobile base 1 and a thermocouple body 4, a driving structure 2 and a rotating structure 3 are installed on the mobile 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 arranged on the mobile base 1, a limiting structure 6 is arranged 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, and the limiting structure 6 is installed with a protective structure 7 for protecting itself;

[0043] 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 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, and 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.

[0044] In the present invention, a plurality of slide grooves 206 are arranged on the protective plate 203, and the rotating shaft 301 passes through the adjacent slide grooves 206. By setting 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.

[0045] 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 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, and 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 second limiting plate 603 close thereto. 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.

[0046] In the present invention, 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 wheel 802 is 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, 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 to 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, so that the spring 605 is stretched. With the movement of the mobile base 1, the rolling wheel 802 continues to rotate until the thermocouple body 4 is in contact with the pipe again, so as to measure the temperature at different positions on the surface of the pipe again. The operator does not need to manually adjust the position of the thermocouple body 4, which improves the operator's operating convenience and ensures the measurement efficiency. At the same time, it can avoid the friction between the thermocouple body 4 and the pipe when it moves on the surface of the pipe, provide a certain protection for the thermocouple body 4, and ensure the service life of the temperature measuring device.

[0047] In the present invention, the protective structure 7 includes a first protective sleeve 701 fixedly connected to the second limiting plate 603, 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 limiting 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.

[0048] Working principle: before thermal spraying the pipe, when the operator needs to use the temperature measuring device to measure the temperature of the pipe, the driving motor 201 can be turned on, so that the driving motor 201 drives 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.

[0049] 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.

[0050] When the thermocouple body 4 and the rolling wheel 802 are tightly fitted to 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, so that the rolling wheel 802 pushes the fixed plate 804 through the adjustment plate 803 to move close 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, thereby measuring the temperature of the second position on the surface of the pipe.

[0051] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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 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 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) meshes with a group of teeth (205) close to the rotating shaft (301); and the thermocouple body (4) is slidably connected to the close rotating shaft (301); A plurality of slide grooves (206) are provided on the protection plate (203), and the rotating shaft (301) passes through adjacent slide grooves (206); The pushing structure (5) comprises a plurality of mounting rods (501) fixedly connected to the side of the mobile base (1), all the mounting rods (501) being fixedly connected to the same mounting plate (502), an electric push rod (503) being mounted on the mounting plate (502), a push plate (504) being 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 being provided on the push plate (504); 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); an end of the connecting plate (604) away from the second limiting plate (603) is rotatably connected to a push plate (504); a spring (605) is fixedly connected to the first limiting plate (601); an end of the spring (605) away from the first limiting plate (601) is fixedly connected to the second limiting plate (603) closer thereto.

2. A temperature measuring device for thermal spraying of pipes according to claim 1, 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).

3. A temperature measuring device for thermal spraying of pipes according to claim 2, 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.

4. A temperature measuring device for thermal spraying of pipes according to claim 3, 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).

5. A temperature measuring device for thermal spraying of pipes according to claim 4, 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).

6. The measuring method of the temperature measuring device for thermal spraying of pipes according to claim 5, 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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