Pipeline repair temperature monitor with anti-pull-off structure
By designing a temperature monitoring instrument with an anti-pull-out structure, the problems of optical fiber detachment and bending were solved, achieving stable clamping and bending control of the optical fiber, and ensuring the accuracy of temperature acquisition and the stability of the signal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-04
- Publication Date
- 2026-04-03
AI Technical Summary
In existing temperature monitoring instruments, the sensing fiber is prone to detachment and excessive bending at the PLC temperature controller wiring terminal, affecting the accuracy of temperature acquisition.
A temperature monitoring instrument with an anti-pull-out structure was designed, comprising a fixing component and a buffer component. The optical fiber is clamped and positioned by the cooperation of the pad and the fixing component, the bending angle of the optical fiber is limited by the buffer component, the clamping force is evenly distributed by the expansion pad, and a positioning mechanism is set to prevent the optical fiber from shaking.
It effectively prevents optical fiber from falling off and bending damage, improves the adaptability and temperature measurement accuracy of optical fiber, ensures signal transmission stability, and monitors the stress state of optical fiber in real time, reducing the risk of optical fiber damage.
Smart Images
Figure CN121783369A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of temperature detection technology, specifically a temperature monitoring instrument for pipe repair with an anti-pull-out structure. Background Technology
[0002] CIPP pipeline repair technology, a key process in trenchless repair, relies heavily on precise temperature control during the lining curing process. The overall repair quality depends heavily on real-time, continuous monitoring of the heating temperature in various areas within the pipeline to ensure uniform resin curing. Currently, portable temperature monitoring instruments with integrated PLC temperature controllers are commonly used in this process, collecting temperature signals via optical fibers laid within the pipeline. However, in actual construction sites, especially in long-distance or complex pipeline repair operations, the connection stability and anti-interference protection of the optical fibers at the monitoring instrument's output port are severely inadequate. During the laying and dragging process of tens or even hundreds of meters, the optical fibers are easily subjected to unpredictable lateral tension or sudden pulling, causing them to detach from the PLC temperature controller's wiring terminals. Currently, a clamping mechanism using bolts and clips is typically used to fix the optical fibers to the PLC temperature controller surface to prevent detachment. However, this clamping method not only has poor adaptability to optical fiber diameters, but also allows the area near the bolts and clips to easily bend beyond a threshold during movement, thus affecting the accuracy of temperature acquisition. Summary of the Invention
[0003] The technical problem to be solved by this invention is how to reduce the bending amplitude of the optical fiber in the area near the clamping mechanism while avoiding the detachment of the optical fiber from the PLC temperature controller terminal.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a temperature monitoring instrument for pipe repair with an anti-pull-out structure, comprising a base box and a cover. The cover is hinged to the side of the base box via a hinge shaft to achieve open-close protection. A PLC temperature controller is installed inside the base box for processing temperature signals. A display is installed inside the cover. An anti-drop structure is detachably installed on the outside of the base box. The anti-drop structure includes a pad, a fixing component, and a buffer component. The pad cooperates with the fixing component. The buffer component is located on the side of the fixing component away from the cover. The wiring terminals of the PLC temperature controller are equipped with a sensing optical fiber, which is detachably connected to the PLC temperature controller. When using CIPP pipe repair technology, workers can pass the sensing optical fiber sequentially through the fixing component and the buffer component, and then evenly lay the sensing optical fiber inside the pipe. This allows for accurate collection of temperature data from various areas of the pipe during the repair process, ensuring... Regarding heating performance, this invention features an anti-detachment structure compared to current pipe repair temperature monitors. The combination of a pad and a fixing component clamps and positions sensing optical fibers of different diameters, preventing poor contact between the sensing optical fiber and the PLC temperature controller's wiring terminals due to pulling. Additionally, the buffer component allows workers to easily monitor the bending angle of the sensing optical fiber after it exits the fixing component, preventing damage or interference with temperature measurement accuracy due to excessive bending during pulling. Finally, this invention includes a placement cavity on the PLC temperature controller, with a positioning mechanism on its side. After use, workers can remove the sensing optical fiber from the PLC temperature controller, wind it into a coil, and place it in the placement cavity. The positioning mechanism then positions the sensing optical fiber, preventing it from shaking during temperature monitor movement.
[0005] Furthermore, the fixing assembly includes a guide rod, a movable block, a second threaded block, a screw, and a pressure plate. The screw is located at the end of the guide rod away from the base box. The movable block is located on the guide rod, and the second threaded block is located on the screw. The movable block and the second threaded block are connected by a threaded tube, wherein one end of the threaded tube is fixed to the movable block, and the other end of the threaded tube is slidably installed inside the second threaded block. The pressure plate is located on the side of the movable block and is aligned with the pad. When the sensing fiber is laid, it will pass through the area between the pressure plate and the pad. At this time, the operator can rotate the second threaded block to drive the threaded tube, the movable block, and the pressure plate to move towards the pad. The pressure plate and the pad clamp the sensing fiber to prevent it from falling off the terminal of the PLC temperature controller due to pulling during the laying process.
[0006] Furthermore, the threaded tube is provided with a first threaded block, and the first threaded block is provided with an annular groove on the side near the movable block. The movable block is provided with a first cavity, and a piston is also provided in the first cavity. A connecting rod is provided at the end of the piston near the first threaded block, and the end of the connecting rod away from the piston is a T-shaped structure that extends into the annular groove. The pressure plate is provided with a second cavity, and a second expansion pad is provided at the end of the second cavity near the pad. The first cavity and the second cavity are connected. After the pressure plate and the pad clamp the sensing fiber, the operator can continue to rotate the first threaded block as needed. The first threaded block drives the connecting rod to push the piston towards the bottom box. At this time, the air in the first cavity will be squeezed into the second cavity, causing the second expansion pad to expand. The second expansion pad wraps around the outer periphery of the sensing fiber, thus overcoming the problem of poor clamping stability caused by line contact or point contact when encountering sensing fibers of different diameters in the existing clamping method, and the problem of local pressure concentration damaging the sensing fiber.
[0007] Furthermore, a third cavity is provided within the pad. A first expansion pad and an air duct are provided at the end of the third cavity near the pressure plate (a sealing ring can be installed in the air duct as needed). An air duct is provided at the end of the pressure plate near the pad, and the air duct is aligned with the air duct. After the pressure plate and pad clamp the sensing fiber, the air duct extends into the air duct. When the operator rotates the first threaded block to compress the air in the first cavity into the second cavity, some air in the first cavity simultaneously enters the third cavity due to the air duct extending into the air duct, causing the first expansion pad to expand. Through the dual cooperation of the first and second expansion pads, the present invention can evenly distribute the clamping force to the entire contact surface of the sensing fiber's outer periphery, improving the adaptability and clamping stability for sensing fibers of different diameters, and effectively protecting the sensing fiber's outer jacket from damage due to localized pressure concentration, further ensuring the structural integrity and signal transmission stability of the sensing fiber during wiring and operation.
[0008] Furthermore, the buffer assembly includes a fixed frame, a mounting base, a connecting frame, and a second pulley. The mounting base is mounted on the fixed frame. One end of the connecting frame is connected to the mounting base via a limiting module, and the other end of the connecting frame is connected to the second pulley. When the sensing fiber is laid and moved, if the area of the sensing fiber near the fixed assembly bends, it will cause the connecting frame and the second pulley to deflect synchronously. The limiting module reduces the bending angle of the sensing fiber on the one hand, and on the other hand, it can quantitatively detect the bending angle of the sensing fiber so that the staff can know in real time whether the bending angle of the sensing fiber is within the allowable range.
[0009] Furthermore, the mounting base is provided with a mounting cavity, and the limiting module is disposed in the mounting cavity. The limiting module includes a ring rod, a rotating shaft, and a limiting block. The rotating shaft is connected to the connecting frame, and the limiting block is disposed on the rotating shaft. The ring rod passes through the limiting block and is wrapped with a limiting spring on its outer side. When the sensing optical fiber bends near the area of the fixed component, the connecting frame and the second pulley will deflect synchronously and drive the limiting block to squeeze the limiting spring. The limiting spring restricts and buffers the movement amplitude of the connecting frame, the second pulley, and the sensing optical fiber.
[0010] Furthermore, a piezoelectric element is provided on the side of the limiting block near the limiting spring. The piezoelectric element is connected to the display via a signal converter. When the limiting block squeezes the limiting spring, it will simultaneously squeeze the piezoelectric element. The piezoelectric element converts the mechanical pressure it receives into an electrical signal. This electrical signal is conditioned by the signal converter and then transmitted to the display. At this time, the operator can visually observe the signal change of the piezoelectric element on the display, thereby judging the magnitude of the external force on the sensing fiber and the bending amplitude near the fixed component area, so that the operator can take timely intervention measures as needed.
[0011] Furthermore, a first pulley is provided on the outside of the base box. The first pulley is located between the fixed component and the buffer component. After the sensing optical fiber is led out from the fixed component, it first passes around the first pulley and then extends to the second pulley of the buffer component. The first pulley and the second pulley form a cooperative guiding structure, which makes the optical fiber wiring path more regular and avoids the optical fiber from being excessively bent or directly rubbing against the equipment housing.
[0012] Furthermore, the placement cavity is provided with several lifting slots, each of which is equipped with a positioning mechanism. The positioning mechanism includes a lifting block and a compression spring. The lifting block is movably installed in the lifting slot via the compression spring, which provides a continuous elastic pressing force to the lifting block. After the invention is used, the operator can manually lift the lifting block upwards and then place the sensing optical fiber into the placement cavity. At this time, the lifting block is released, and under the action of the compression spring, the lifting block will press the sensing optical fiber tightly, thereby preventing the sensing optical fiber from shaking in the placement cavity during the movement of the invention, thus extending the service life of the sensing optical fiber.
[0013] Furthermore, since the diameter of sensing optical fibers of different lengths after being wound into a loop will vary considerably, the present invention provides a telescopic block at the end of the lifting block away from the lifting groove, and an adjusting bolt at the end of the telescopic block near the lifting block. The distance between the telescopic block and the lifting block is controlled by adjusting the bolt to adapt to the positioning of sensing optical fibers of different lengths.
[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention features a detachable anti-detachment structure, fundamentally solving the problem of loosening or detachment of the sensing fiber from the PLC temperature controller wiring terminal due to accidental pulling during installation and use. The anti-detachment structure mainly consists of a fixing component and a buffer component. Through the cooperation of the fixing component and the pad, the sensing fiber is actively clamped and fixed. Furthermore, the double cooperation between the fixing component and the first and second expansion pads inside the pad evenly distributes the clamping force across the entire contact surface of the sensing fiber. This improves the compatibility and clamping stability of sensing fibers of different diameters, effectively protecting the sensing fiber sheath from damage due to localized pressure concentration, and further ensuring the structural integrity and signal transmission of the sensing fiber during wiring and operation. Regarding transmission stability, this invention uses a buffer component to elastically limit the bending amplitude of the optical fiber, preventing internal damage or decreased temperature measurement accuracy due to excessive bending. Furthermore, when the optical fiber is subjected to lateral tension or bending, its mechanical action is converted into a visualized electrical signal in real time and fed back to the display. This allows staff to intuitively grasp the stress state and bending degree at the fiber outlet, enabling timely intervention in the early stages of abnormal situations (such as excessive external force or bending exceeding limits), transforming passive response into proactive prevention. This significantly reduces the risk of fiber damage due to improper operation or accidental contact. Finally, this invention also includes a positioning mechanism that adjusts the length based on the diameter of the sensing fiber after it is wound into a loop. This positioning mechanism positions the sensing fiber after use, preventing the sensing fiber from shaking inside the cavity during the movement of the temperature monitor. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram showing the positions of the pad and the first pulley of the present invention; Figure 3 This is a schematic diagram of the appearance of the fixing component of the present invention; Figure 4 This is a cross-sectional view of the fixed component of the present invention; Figure 5 This is a schematic diagram of the pressure plate structure of the present invention; Figure 6 This is a schematic diagram of the pad structure of the present invention; Figure 7 This is a schematic diagram of the buffer component structure of the present invention; Figure 8 This is a schematic diagram of the limiting module structure of the present invention; Figure 9 This is a schematic diagram of the positioning mechanism of the present invention.
[0016] In the diagram: 1. Base box; 11. Pad block; 111. First expansion pad; 112. Air vent; 12. First pulley; 2. PLC temperature controller; 21. Housing cavity; 22. Telescopic block; 23. Lifting block; 3. Display; 4. Box cover; 5. Fixing assembly; 51. Guide rod; 52. Movable block; 521. Piston; 5211. Connecting rod; 53. Threaded pipe; 54. First threaded block; 55. Second threaded block; 56. Screw; 57. Pressure plate; 571. Second expansion pad; 572. Air vent; 6. Buffer assembly; 61. Fixing frame; 62. Mounting base; 621. Ring rod; 63. Connecting frame; 631. Rotating shaft; 632. Limiting block; 64. Second pulley. Detailed Implementation
[0017] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Example: Figures 1-9As shown, this invention provides a technical solution: a temperature monitoring instrument for pipe repair with an anti-pull-out structure, including a base box 1 and a cover 4. The cover 4 is hinged to the side of the base box 1 via a hinge shaft to achieve open-close protection. A PLC temperature controller 2 is installed inside the base box 1 for processing temperature signals. A display 3 is installed inside the cover 4. An anti-detachment structure is detachably installed on the outside of the base box 1, including a pad 11, a fixing component 5, and a buffer component 6. The pad 11 cooperates with the fixing component 5, and the buffer component 6 is located on the side of the fixing component 5 away from the cover 4. The wiring terminals of the PLC temperature controller 2 are equipped with a sensing optical fiber, which is detachably connected to the PLC temperature controller 2. When using CIPP pipe repair technology, workers can pass the sensing optical fiber sequentially through the fixing component 5 and the buffer component 6, and then evenly lay the sensing optical fiber inside the pipe. This allows for accurate collection of temperature data from various areas of the pipe during the repair process, ensuring heating effectiveness. Compared to current temperature monitoring instruments for pipeline repair, this invention features an anti-detachment structure. The pad 11, in conjunction with the fixing component 5, clamps and positions sensing optical fibers of different diameters, preventing poor contact between the sensing optical fiber and the wiring terminal of the PLC temperature controller 2 due to pulling. Furthermore, the buffer component 6 allows operators to easily monitor the bending angle of the sensing optical fiber after it exits the fixing component 5, preventing damage or interference with temperature measurement accuracy due to excessive bending during pulling. Finally, this invention also includes a mounting cavity 21 on the PLC temperature controller 2, with a positioning mechanism on its side. After use, operators can remove the sensing optical fiber from the PLC temperature controller 2, wind it into a coil, and then place it in the mounting cavity 21. The positioning mechanism positions the sensing optical fiber, preventing it from shaking during movement of the temperature monitoring instrument.
[0019] like Figures 1-4 As shown, the fixing assembly 5 includes a guide rod 51, a movable block 52, a second threaded block 55, a screw 56, and a pressure plate 57. The screw 56 is located at the end of the guide rod 51 away from the base box 1. The movable block 52 is located on the guide rod 51, and the second threaded block 55 is located on the screw 56. The movable block 52 and the second threaded block 55 are connected by a threaded tube 53, wherein one end of the threaded tube 53 is fixed to the movable block 52, and the other end of the threaded tube 53 is slidably installed in the second threaded block 55. The pressure plate 57 is located on the side of the movable block 52 and is aligned with the pad 11. When the sensing fiber is laid, it will pass through the area between the pressure plate 57 and the pad 11. At this time, the operator can rotate the second threaded block 55 to drive the threaded tube 53, the movable block 52, and the pressure plate 57 to move towards the pad 11. The pressure plate 57 and the pad 11 clamp the sensing fiber to prevent the sensing fiber from falling off the terminal of the PLC temperature controller 2 due to pulling during the laying process.
[0020] like Figures 4-5 As shown, a first threaded block 54 is provided on the threaded tube 53. An annular groove is provided on the side of the first threaded block 54 near the movable block 52. A first cavity is provided inside the movable block 52, and a piston 521 is also provided inside the first cavity. A connecting rod 5211 is provided at the end of the piston 521 near the first threaded block 54. The end of the connecting rod 5211 away from the piston 521 has a T-shaped structure and extends into the annular groove. A second cavity is provided inside the pressure plate 57. A second expansion gasket 571 is provided at the end of the second cavity near the pad block 11. The first cavity and the second cavity are connected. When the pressure plate 57 and the pad block... After clamping the 11 pairs of sensing optical fibers, the operator can continue to rotate the first threaded block 54 as needed. The first threaded block 54 drives the connecting rod 5211 to push the piston 521 towards the bottom box 1. At this time, the air in the first cavity will be squeezed into the second cavity, causing the second expansion pad 571 to expand. The second expansion pad 571 wraps around the outer periphery of the sensing optical fiber, thus overcoming the problem of poor clamping stability caused by line contact or point contact when encountering sensing optical fibers of different diameters in the existing clamping method, and the problem of local pressure concentration damaging the sensing optical fiber.
[0021] like Figures 4-6 As shown, a third cavity is provided inside the pad 11. A first expansion pad 111 and an air duct 112 are provided at the end of the third cavity near the pressure plate 57 (a sealing ring can be installed in the air duct 112 as needed). An air duct 572 is provided at the end of the pressure plate 57 near the pad 11, and the air duct 572 is aligned with the air duct 112. After the pressure plate 57 and the pad 11 clamp the sensing optical fiber, the air duct 572 extends into the air duct 112. When the operator rotates the first threaded block 54 to compress the air in the first cavity into the second cavity, due to… The air duct 572 extends into the air duct 112, so some of the air in the first cavity will enter the third cavity simultaneously, causing the first expansion pad 111 to expand. Through the double cooperation of the first expansion pad 111 and the second expansion pad 571, the present invention can evenly distribute the clamping force to the entire contact surface of the outer periphery of the sensing fiber, which not only improves the adaptability and clamping stability of sensing fibers of different diameters, but also effectively protects the sensing fiber jacket from damage due to local pressure concentration, further ensuring the structural integrity and signal transmission stability of the sensing fiber during wiring and operation.
[0022] like Figure 7As shown, the buffer assembly 6 includes a fixed frame 61, a mounting base 62, a connecting frame 63, and a second pulley 64. The mounting base 62 is mounted on the fixed frame 61. One end of the connecting frame 63 is connected to the mounting base 62 through a limiting module, and the other end of the connecting frame 63 is connected to the second pulley 64. When the sensing fiber is laid and moved, if the area of the sensing fiber close to the fixed assembly 5 is bent, it will cause the connecting frame 63 and the second pulley 64 to deflect synchronously. The limiting module reduces the bending angle of the sensing fiber on the one hand, and on the other hand, the limiting module can quantitatively detect the bending angle of the sensing fiber so that the staff can know in real time whether the bending angle of the sensing fiber is within the allowable range.
[0023] like Figure 8 As shown, the mounting base 62 has a mounting cavity, and the limiting module is set in the mounting cavity. The limiting module includes a ring rod 621, a rotating shaft 631, and a limiting block 632. The rotating shaft 631 is connected to the connecting frame 63, and the limiting block 632 is set on the rotating shaft 631. The ring rod 621 passes through the limiting block 632 and a limiting spring is wound around its outer side. When the sensing optical fiber bends near the area of the fixing component 5, the connecting frame 63 and the second pulley 64 will deflect synchronously and drive the limiting block 632 to squeeze the limiting spring. The limiting spring restricts and buffers the movement amplitude of the connecting frame 63, the second pulley 64, and the sensing optical fiber.
[0024] like Figure 8 As shown, a piezoelectric element is provided on the side of the limiting block 632 near the limiting spring. The piezoelectric element is connected to the display 3 through a signal converter. When the limiting block 632 squeezes the limiting spring, it will squeeze the piezoelectric element simultaneously. The piezoelectric element converts the mechanical pressure it receives into an electrical signal. This electrical signal is conditioned by the signal converter and then transmitted to the display 3. At this time, the staff can directly observe the signal change of the piezoelectric element through the display 3, and then judge the magnitude of the external force on the sensing fiber and the bending amplitude of the area near the fixed component 5, so that the staff can take timely intervention measures as needed.
[0025] like Figures 1-2 As shown, a first pulley 12 is also provided on the outside of the base box 1. The first pulley 12 is located between the fixed component 5 and the buffer component 6. After the sensing optical fiber is led out from the fixed component 5, it first passes around the first pulley 12 and then extends to the second pulley 64 of the buffer component 6. The first pulley 12 and the second pulley 64 form a cooperative guiding structure, which makes the optical fiber wiring path more regular and avoids the optical fiber from being excessively bent or directly rubbing against the equipment housing.
[0026] like Figure 9As shown, the mounting cavity 21 is provided with several lifting slots, and each lifting slot is provided with a positioning mechanism. The positioning mechanism includes a lifting block 23 and a compression spring. The lifting block 23 is movably installed in the lifting slot through the compression spring. The compression spring provides a continuous elastic pressing force to the lifting block 23. When the present invention is finished, the staff can manually lift the lifting block 23 upward and then place the sensing optical fiber in the mounting cavity 21. At this time, the lifting block 23 is released. Under the action of the compression spring, the lifting block 23 will press the sensing optical fiber tightly, thereby preventing the sensing optical fiber from shaking in the mounting cavity 21 during the movement of the present invention, so as to extend the service life of the sensing optical fiber.
[0027] like Figure 9 As shown, since the diameter of sensing optical fibers of different lengths after being wound into a loop will vary greatly, the present invention provides a telescopic block 22 at the end of the lifting block 23 away from the lifting groove, and an adjusting bolt is provided at the end of the telescopic block 22 close to the lifting block 23. The distance between the telescopic block 22 and the lifting block 23 is controlled by adjusting the bolt so as to adapt to the positioning of sensing optical fibers of different lengths.
[0028] The working principle of this invention is as follows: Before operation, the sensing optical fiber is led out from the fixed component 5, then passes around the first pulley 12, and extends to the second pulley 64 of the buffer component 6. Finally, the sensing optical fiber is evenly laid in the pipe. During the laying process, by rotating the second threaded block 55, the threaded pipe 53, the movable block 52, and the pressure plate 57 are driven to move towards the pad 11. The pressure plate 57 and the pad 11 clamp the sensing optical fiber to prevent it from falling off the terminal of the PLC temperature controller 2 due to pulling during laying. After the pressure plate 57 and the pad 11 clamp the sensing optical fiber, the operator can rotate the first threaded block 54 as needed to make the first threaded block 54 rotate as needed. The expansion pads 111 and 571 expand and wrap around the outer periphery of the sensing fiber to ensure clamping stability. In addition, if the sensing fiber bends near the fixing component 5, the operator can visually judge the bending range of the fixing component 5 through the limiting module and the display 3, so that the operator can take timely intervention measures as needed. Finally, after the temperature monitor is used, the operator can remove the sensing fiber from the PLC temperature controller 2, wind it into a loop, and then place the sensing fiber into the mounting cavity 21. The positioning mechanism positions the sensing fiber to prevent the sensing fiber mounting cavity 21 from shaking during the movement of the temperature monitor.
[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A temperature monitoring instrument for pipe repair with an anti-pull-out structure, comprising a base box (1) and a cover (4), wherein the cover (4) is movably hinged to the side end of the base box (1) via a hinge shaft, characterized in that: A PLC temperature controller (2) is installed inside the bottom box (1), and a display (3) is installed inside the box cover (4). An anti-drop structure is detachably installed on the outside of the bottom box (1). The anti-drop structure includes a pad (11), a fixing component (5), and a buffer component (6). The pad (11) cooperates with the fixing component (5). The buffer component (6) is located on the side of the fixing component (5) away from the box cover (4). The terminal of the PLC temperature controller (2) is provided with a sensing optical fiber. The sensing optical fiber passes through the fixing component (5) and the buffer component (6) in sequence. The PLC temperature controller (2) is provided with a mounting cavity (21). A positioning mechanism is provided on the side of the mounting cavity (21).
2. The temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 1, characterized in that: The fixing component (5) includes a guide rod (51), a movable block (52), a second threaded block (55), a screw (56), and a pressure plate (57). The screw (56) is located at the end of the guide rod (51) away from the bottom box (1). The movable block (52) is located on the guide rod (51). The second threaded block (55) is located on the screw (56). The movable block (52) and the second threaded block (55) are connected by a threaded tube (53). The pressure plate (57) is located on the side of the movable block (52) and is aligned with the pad block (11).
3. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 2, characterized in that: The threaded tube (53) is provided with a first threaded block (54), and the first threaded block (54) is provided with an annular groove on the side near the movable block (52). The movable block (52) is provided with a first cavity, and a piston (521) is provided in the first cavity. A connecting rod (5211) is provided at the end of the piston (521) near the first threaded block (54). The end of the connecting rod (5211) away from the piston (521) is a T-shaped structure and extends into the annular groove. A second cavity is provided in the pressure plate (57), and a second expansion liner (571) is provided at the end of the second cavity near the pad block (11). The first cavity and the second cavity are connected.
4. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 3, characterized in that: The pad (11) is provided with a third cavity. The third cavity is provided with a first expansion pad (111) and an air guide hole (112) at one end near the pressure plate (57). The pressure plate (57) is provided with an air guide pipe (572) at one end near the pad (11). The air guide pipe (572) is aligned with the air guide hole (112).
5. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 1, characterized in that: The buffer assembly (6) includes a fixed frame (61), a mounting base (62), a connecting frame (63), and a second pulley (64). The mounting base (62) is mounted on the fixed frame (61). One end of the connecting frame (63) is connected to the mounting base (62) through a limiting module, and the other end of the connecting frame (63) is connected to the second pulley (64).
6. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 5, characterized in that: The mounting base (62) is provided with a mounting cavity, and the limiting module is set in the mounting cavity. The limiting module includes a ring rod (621), a rotating shaft (631) and a limiting block (632). The rotating shaft (631) is connected to the connecting frame (63), and the limiting block (632) is set on the rotating shaft (631). The ring rod (621) passes through the limiting block (632) and a limiting spring is wound around its outer side.
7. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 6, characterized in that: The limiting block (632) has a piezoelectric element on the side near the limiting spring, and the piezoelectric element is connected to the display (3) through a signal converter.
8. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 1, characterized in that: The outer side of the base box (1) is also provided with a first pulley (12), which is located between the fixing component (5) and the buffer component (6).
9. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 1, characterized in that: The placement cavity (21) is provided with a number of lifting slots, and each lifting slot is provided with a positioning mechanism. The positioning mechanism includes a lifting block (23) and a compression spring. The lifting block (23) is movably installed in the lifting slot by the compression spring.
10. A temperature monitoring instrument for pipe repair with an anti-pull-out structure according to claim 9, characterized in that: The lifting block (23) is provided with a telescopic block (22) at the end away from the lifting groove. The telescopic block (22) is provided with an adjusting bolt at the end near the lifting block (23). The distance between the telescopic block (22) and the lifting block (23) is controlled by adjusting the bolt.