Thermal power plant thermotechnical cable temperature detection device
By introducing a walking mechanism and an intermittent temperature monitoring component into the thermal power plant's thermal cable temperature detection device, the problem of frequent device movement required in existing technologies has been solved, achieving high efficiency and accuracy in cable temperature detection and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU CHINA RESOURCES POWER CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-05
AI Technical Summary
Existing thermal power plant thermal cable temperature detection devices require constant movement of the device when performing temperature detection at multiple locations on the cable, resulting in time-consuming and labor-intensive operation and affecting the normal operation of the cable.
A temperature detection device for thermal power plant cables was designed, comprising an open detection box at the top and a traveling mechanism. It has a built-in intermittent temperature monitoring component that can intermittently contact the cable to measure the temperature during movement. Combined with an elastic clamping component and a locking structure, it ensures the accuracy and convenience of detection.
This technology enables temperature detection at different locations on the cable without the need for moving the device, improving detection accuracy and efficiency, reducing operation time, and not affecting the normal operation of the cable.
Smart Images
Figure CN224202583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable testing technology, and in particular to a temperature detection device for thermal power plant cables. Background Technology
[0002] As a crucial base for electricity production, the operational efficiency and safety of thermal power plants directly impact the stability and reliability of the nation's energy supply. Within the complex systems of thermal power plants, thermal cables play a vital role in transmitting electricity and control signals. They are ubiquitous throughout the plant, connecting essential equipment such as generators, transformers, and control rooms. Because the operating environment of thermal power plants is typically harsh, including high temperatures, high pressures, and strong electromagnetic fields, these environmental factors pose significant challenges to the performance and lifespan of thermal cables. Therefore, regular temperature monitoring of thermal cables is essential for timely detection and handling of potential overheating issues, which is crucial for fire prevention and ensuring the safe operation of equipment.
[0003] However, existing thermal power plant cable temperature detection devices can usually only detect the temperature at a single location on the cable at a time. To improve accuracy, it is usually necessary to detect the temperature at multiple locations on the cable, which requires constantly moving the entire detection device. This process involves repeated disassembly and reassembly of the cable, which is time-consuming and labor-intensive, causing many problems for the temperature detection work of thermal power plant cables.
[0004] Based on this, a temperature detection device for thermal power plant cables was developed to solve the above-mentioned technical problems. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a temperature detection device for thermal power plant thermal cables, which effectively overcomes the defects of the prior art.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0007] A temperature detection device for thermal power plant cables includes a detection box with an open top. The top of the detection box is provided with a cover for opening or closing it. Both ends of the detection box are provided with through holes extending upward to their upper ends. Inside the detection box, at the bottom, there is a traveling mechanism that reciprocates between the two ends of the detection box. The traveling mechanism is provided with an intermittent temperature monitoring component, which is used to intermittently contact and measure the temperature of the cable above during the movement of the traveling mechanism.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the outer surface of the lid is provided with a handle.
[0010] Furthermore, a long, straight cable holder is provided between the two through holes of the detection box. The bottom of the cable holder is provided through the detection channel extending toward both ends of the detection box. The upper part of the cable holder is open. The intermittent temperature monitoring component contacts the cable above through the detection channel and measures the temperature.
[0011] Furthermore, the inner side of the aforementioned cover is provided with an elastic clamping component that matches the aforementioned cable placement rack. The elastic clamping component is used to elastically press against the upper part of the cable when the cover is closed.
[0012] Furthermore, the aforementioned elastic clamping assembly includes a long, straight pressure plate, which is arranged parallel to the inner side of the box cover and extends toward both ends of the detection box. The pressure plate is connected to the box cover by a plurality of elastic elements spaced apart along its length.
[0013] Furthermore, the intermittent temperature monitoring component includes two rollers, a gantry frame, a rotating shaft, a floating plate, and an elastic floating element. The two rollers are spaced apart and coaxially connected to the rotating shaft. Both ends of the rotating shaft are mounted to the upper end of the traveling mechanism via shaft brackets that are rotatably fitted to it. The upper part of the gantry frame spans above the rotating shaft, and its lower end is mounted to the upper end of the traveling mechanism. The rims of the two rollers have symmetrically arranged arc-shaped notches on their sides that are close to each other. The floating plate has a rectangular cross-section, and its upper part is provided with an arc surface that matches the notches. Both ends of the floating plate are close to the two rollers. The lower end is mounted on the upper end of the gantry frame via the aforementioned elastic floating member. A temperature detection probe is provided in the middle of the upper end of the floating plate. The outer edges of the two rollers are provided with anti-slip strips and are respectively supported on both sides of the lower end of the detection channel at the bottom of the cable placement frame. The two rollers are used to roll along the bottom of the cable placement frame when the traveling mechanism moves. During the rolling process, the two ends of the floating plate bounce upward and embed into the above-passing notch, so that the temperature detection probe protrudes above the roller and contacts the cable, or is pressed downward by the rim of the roller to the inside, thereby separating it from the cable.
[0014] Furthermore, one side of the lid is hinged to the long side of the upper part of the test box, and the other side of the lid is provided with a locking structure for locking with the test box in its closed state.
[0015] Furthermore, the locking structure includes buckles at both ends on the other side of the lid, with tightening knobs threaded onto the buckles. When the lid is closed, the buckles are pressed against the other side of the test box, and the tightening knobs are turned under external force to abut or separate from the other side of the test box.
[0016] Furthermore, the aforementioned walking mechanism includes a lead screw, a lead screw nut, and a motor. The two ends of the lead screw are rotatably assembled with the two end side walls of the aforementioned detection box, the lead screw nut is screwed onto the lead screw and contacts the bottom wall of the aforementioned detection box, the drive shaft of the motor and one end of the lead screw are coaxially mounted with pulleys, and belts are wrapped around the two pulleys. The aforementioned intermittent temperature monitoring component is mounted on the upper end of the lead screw nut.
[0017] Furthermore, the aforementioned detection box is equipped with a power supply inside and a controller on its outer surface, with the controller connected to the power supply and the motor respectively.
[0018] The advantages of this utility model are: the structure is reasonably designed, and it can detect the temperature at different positions of the cable passing through the detection device, which can effectively ensure the accuracy of the detection. There is no need to move the entire detection device, so the detection operation is time-saving and labor-saving, and it does not affect the normal operation of the cable, which brings more convenience to the temperature detection of thermal cables in thermal power plants. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the thermal power plant thermal cable temperature detection device of this utility model.
[0020] Figure 2 This is a schematic diagram of the thermal power plant thermal cable temperature detection device of this utility model after opening the box cover and removing one side wall of the detection box.
[0021] Figure 3 This is a schematic diagram of the elastic clamping component in the thermal power plant thermal cable temperature detection device of this utility model;
[0022] Figure 4 This is a schematic diagram of the intermittent temperature monitoring component in the thermal power plant thermal cable temperature detection device of this utility model.
[0023] Figure 5 This is a schematic diagram of the walking mechanism in the thermal power plant thermal cable temperature detection device of this utility model.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1. Detection box; 2. Walking mechanism; 3. Intermittent temperature monitoring component; 4. Cable rack; 5. Elastic clamping component; 11. Box cover; 12. Tightening knob; 21. Lead screw; 22. Lead screw nut; 23. Motor; 31. Roller; 32. Portal frame; 33. Rotating shaft; 34. Floating plate; 35. Elastic floating component; 36. Temperature detection probe; 51. Pressure plate; 52. Elastic component; 111. Through hole; 112. Buckle plate; 311. Notch. Detailed Implementation
[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0027] Example
[0028] like Figure 1 and 2 As shown, the thermal power plant thermal cable temperature detection device of this embodiment includes a detection box 1 with an open top. The top of the detection box 1 is provided with a cover 11 for opening or closing it. The two ends of the detection box 1 are respectively provided with through holes 111 extending upward to their upper ends. The lower part of the inside of the detection box 1 is provided with a traveling mechanism 2 that moves back and forth between the two ends of the detection box 1. The traveling mechanism 2 is provided with an intermittent temperature monitoring component 3. The intermittent temperature monitoring component 3 is used to intermittently contact the cable above and measure its temperature during the movement of the traveling mechanism 2.
[0029] In this embodiment, the thermal power plant thermal cable temperature detection device is used by placing the detection box 1 in a suitable position, opening the box cover 11, inserting the thermal power plant thermal cable, and ensuring that both ends of the cable pass through the through holes 111 at both ends of the detection box 1. Then, the box cover 11 is closed, and the walking mechanism 2 is operated to move from one end of the detection box 1 to the other. During this movement, the intermittent temperature monitoring component 3 intermittently contacts and measures the temperature of the cable above. In other words, as the walking mechanism 2 moves, the intermittent temperature monitoring component 3 measures the temperature of different positions on the cable at regular intervals. The entire device effectively ensures accurate detection results without requiring the entire detection device to be moved, saving time and effort during the detection operation, and does not affect the normal operation of the cable, bringing considerable convenience to the temperature detection work of thermal power plant thermal cables.
[0030] In this embodiment, a handle is provided on the outer surface of the lid 11. By holding the handle (represented by c in the figure), the entire detection box 1 can be easily moved, effectively improving flexibility and making operation convenient and quick.
[0031] In this embodiment, the detection box 1 is a rectangular box with through holes 111 on both side walls along its length.
[0032] In a preferred embodiment, a long straight cable holder 4 is provided between the two through holes 111 at both ends of the detection box 1. The bottom of the cable holder 4 is provided through the detection channel (f in the figure) extending toward both ends of the detection box 1. The upper part of the cable holder 4 is open. The intermittent temperature monitoring component 3 contacts the cable above through the detection channel and measures the temperature.
[0033] In the above implementation scheme, the cable placement rack 4 is used to hold the cable. It is designed as a groove-shaped component with a semi-circular arc cross section. The bottom has a through strip hole (that is, a detection channel) along the length direction. After the cable is placed into the cable placement rack 4, its two ends naturally pass through the through holes 111 at both ends of the detection box 1. During the detection process with the movement mechanism 2, the intermittent temperature monitoring component 3 can contact the cable and measure the temperature through the detection channel.
[0034] As a preferred implementation method, such as Figure 3 As shown, the inner side of the cover 11 is provided with an elastic clamping component 5 that matches the cable placement rack 4. The elastic clamping component 5 is used to elastically press against the upper part of the cable when the cover 11 is closed.
[0035] In the above implementation scheme, the elastic clamping component 5 is designed to extend into the cable placement rack 4 after the box cover 11 is closed, and make elastic contact with the cable, applying a downward elastic pressure to the cable, thereby making the cable as close as possible to the detection channel, clamping and fixing the cable, preventing the cable from detaching from the cable placement rack 4 during the detection process, and preventing it from being pushed upward. When the intermittent temperature monitoring component 3 measures the temperature, it can effectively contact the cable and effectively measure the temperature.
[0036] In this embodiment, the elastic clamping assembly 5 includes a long, straight pressure plate 51. The pressure plate 51 is arranged parallel to the inner side of the cover 11 and extends toward both ends of the detection box 1. The pressure plate 51 is connected to the cover 11 by a plurality of elastic elements 52 spaced apart along its length. The width of the pressure plate 51 is slightly smaller than the width between the inner walls on both sides of the cable placement rack 4. The plurality of elastic elements 52 at the lower end can press against the upper part of the cable, so that the cable maintains a "pressed" posture and effectively contacts the intermittent temperature monitoring assembly 3 for temperature measurement.
[0037] In this embodiment, the elastic element 52 can be a spring.
[0038] As a preferred implementation method, such as Figure 4As shown, the intermittent temperature monitoring component 3 includes two rollers 31, a gantry frame 32, a rotating shaft 33, a floating plate 34, and an elastic floating element 35. The two rollers 31 are spaced apart and coaxially connected to the rotating shaft 33. The two ends of the rotating shaft 33 are respectively mounted on the upper end of the traveling mechanism 2 via shaft brackets (e in the figure) that are rotatably assembled with it. The upper part of the gantry frame 32 spans above the rotating shaft 33, and the lower end is mounted on the upper end of the traveling mechanism 2. The two rollers 31 have symmetrical arc-shaped notches 311 on the side where their rims are close to each other. The floating plate 34 has a rectangular cross-section, and its upper part is provided with an arc surface adapted to the notch 311. The two ends of the floating plate 34 are respectively close to the two rollers 31. The aforementioned rollers 31 are mounted on the upper end of the gantry frame 32 via the aforementioned elastic floating member 35. A temperature detection probe 36 is provided in the middle of the upper end of the aforementioned floating plate 34. The outer edges of the two rollers 31 are provided with anti-slip strips and are respectively supported on both sides of the lower end of the detection channel at the bottom of the cable placement frame 4. The two rollers 31 are used to roll along the bottom of the cable placement frame 4 when the walking mechanism 2 moves. During the rolling process of the rollers 31, the two ends of the aforementioned floating plate 34 bounce upward and embed into the aforementioned notch 311 that passes above, thereby causing the temperature detection probe 36 to protrude above the rollers 31 and contact the cable, or be pressed downward by the rim of the aforementioned rollers 31 to the inside, thereby separating it from the cable.
[0039] In the above implementation scheme, when the traveling mechanism 2 drives the two rollers 31 and the gantry frame 32 to move along the length of the cable, the cable is located above the two rollers 31. The rollers 31 roll along the bottom sides of the detection channel. During the rolling process, the relative position of the rollers 31 and the floating plate 34 changes. When the notch 311 of the roller 31 moves above the corresponding end of the floating plate 34, since the elastic floating member 35 always applies an upward elastic force to the floating plate 34, when the notch 311 is directly opposite the end of the floating plate 34, the two ends of the floating plate 34 are not constrained by the rim and will bounce upward and extend into the channel. In the notch 311, the temperature probe 36 moves upward through the detection channel and contacts the cable to measure the temperature. As the roller 31 continues to roll, the notch 311 gradually moves away from the end of the floating plate 34. The rim of the roller 31 presses downward against the end of the floating plate 34, causing the end of the floating plate 34 to be pressed against the inner side of the rim. The temperature probe 36 then descends and detaches from the cable. After the roller 31 rotates one revolution, the notch 311 rotates back to the end of the floating plate 34, the floating plate 34 bounces upward, and the temperature probe 36 measures the temperature again. This process repeats, completing intermittent temperature measurement. The entire design is ingenious; a temperature measurement can be performed with each revolution of the roller 31. As the traveling mechanism 2 moves, temperature measurement of the cable can be performed at intervals.
[0040] In this embodiment, the lower part of the two end walls of the notch 311 of the roller 31 is chamfered (h in the figure), which can prevent the end walls of the notch 311 from "getting stuck" when they come into contact with and are pressed against the upper surface of the floating plate 34. More specifically, when the floating plate 34 "floats" into the notch 311, the lower part of the two end walls of the notch 311 is above the corresponding side of the upper surface of the floating plate 34.
[0041] In this embodiment, the elastic floating member 35 includes a guide rod that extends vertically through the upper end of the portal frame 32, and a spring is sleeved on the guide rod. The two ends of the spring are respectively connected to the upper end of the portal frame 32 and the lower end of the floating plate 34.
[0042] It is important to emphasize that the width of the rim of roller 31 is slightly larger than the circular connecting plate between the inner rings of the rim of roller 31. In other words, the length of floating plate 34 is less than the distance between the middle connecting plates of the two rollers 31, but greater than the distance between the rims of the two rollers 31. This way, when the notch 311 passes above the corresponding end of floating plate 34, floating plate 34 can bounce upward.
[0043] In this embodiment, one side of the cover 11 is hinged to the upper long side of the detection box 1, and the other side of the cover 11 is provided with a locking structure for locking with the detection box 1 in its closed state. This facilitates the opening and locking of the cover 11 after it is closed.
[0044] In a preferred embodiment, the locking structure includes buckle plates 112 disposed at both ends on the other side of the cover 11. Tightening knobs 12 are threadedly connected to the buckle plates 112. When the cover 11 is closed, the buckle plates 112 are pressed against the other side of the detection box 1. The tightening knobs 12 are used to be turned under external force until they abut against or separate from the other side of the detection box 1.
[0045] In the above implementation, after the cover 11 is closed, the buckle plate 112 will be located at both ends on one side of the detection box 1. Then, by operating the tightening knob 12 to pre-tighten, the screw part connected to the tightening knob 12 will abut against one side of the detection box 1, thereby locking the two together. Alternatively, limiting holes adapted to the tightening knob 12 can be provided at both ends on one side of the detection box 1, and the screw part of the tightening knob 12 can be embedded in the limiting hole.
[0046] As a preferred implementation method, such as Figure 5As shown, the aforementioned walking mechanism 2 includes a lead screw 21, a lead screw seat 22, and a motor 23. The two ends of the lead screw 21 are rotatably assembled with the two end side walls of the aforementioned detection box 1, respectively. The lead screw seat 22 is screwed onto the lead screw 21 and contacts the bottom wall of the aforementioned detection box 1. The drive shaft of the motor 23 and one end of the lead screw 21 are coaxially mounted with pulleys, and belts are wrapped around the two pulleys. The aforementioned intermittent temperature monitoring component 3 is mounted on the upper end of the lead screw seat 22.
[0047] In the above implementation scheme, the motor 23 drives the lead screw 21 to rotate through the belt and pulley, thereby causing the lead screw nut 22 to move linearly along the lead screw 21, which in turn drives the temperature detection probe 36 to move along the length of the cable. The walking mechanism 2 has a simple structure design, flexible operation, and stable operation.
[0048] In this embodiment, the detection box 1 is equipped with a power supply (a in the figure) inside and a controller (b in the figure) on its outer surface. The controller is connected to the power supply and the motor 23 respectively.
[0049] In this embodiment, the temperature detection probe 36 is connected to the controller, which has a display screen located on one outer surface of the detection box 1.
[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0053] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A temperature detection device for thermal power plant cables, characterized in that: The device includes an open-top testing box (1), with a lid (11) on the top for opening or closing. Both ends of the testing box (1) have through holes (111) extending upward to their upper ends. Inside the testing box (1), a walking mechanism (2) is provided that moves back and forth between the two ends of the testing box (1). An intermittent temperature monitoring component (3) is provided on the walking mechanism (2). The intermittent temperature monitoring component (3) is used to intermittently contact the cable above and measure the temperature during the movement of the walking mechanism (2).
2. The temperature detection device for thermal power plant cables according to claim 1, characterized in that: The outer surface of the box lid (11) is provided with a handle.
3. The temperature detection device for thermal power plant cables according to claim 1, characterized in that: A long, straight cable holder (4) is provided between the two through holes (111) of the detection box (1). The bottom of the cable holder (4) is provided through the detection channel extending toward both ends of the detection box (1). The upper part of the cable holder (4) is open. The intermittent temperature monitoring component (3) contacts the cable above through the detection channel and measures the temperature.
4. The temperature detection device for thermal cables in thermal power plants according to claim 3, characterized in that: The inner side of the cover (11) is provided with an elastic clamping component (5) that matches the cable placement rack (4). The elastic clamping component (5) is used to elastically press against the upper part of the cable when the cover (11) is closed.
5. The temperature detection device for thermal power plant cables according to claim 4, characterized in that: The elastic clamping assembly (5) includes a long straight pressure plate (51), which is arranged parallel to the inner side of the box cover (11) and extends toward both ends of the detection box (1). The pressure plate (51) is connected to the box cover (11) by a plurality of elastic elements (52) spaced apart in its length direction.
6. The temperature detection device for thermal power plant cables according to claim 3, characterized in that: The intermittent temperature monitoring component (3) includes two rollers (31), a gantry frame (32), a rotating shaft (33), a floating plate (34), and an elastic floating element (35). The two rollers (31) are spaced apart and coaxially connected to the rotating shaft (33). The two ends of the rotating shaft (33) are respectively mounted on the upper end of the traveling mechanism (2) through shaft brackets that are rotatably assembled with it. The upper part of the gantry frame (32) spans above the rotating shaft (33), and the lower end is mounted on the upper end of the traveling mechanism (2). The two rollers (31) have symmetrical arc-shaped notches (311) on the side where their rims are close to each other. The floating plate (34) has a rectangular cross-section, and its upper part is provided with an arc surface that matches the notch (311). The two ends of the floating plate (34) are respectively close to the two rollers (31). Rollers (31) are mounted on the upper end of the gantry frame (32) via the elastic floating member (35) at the lower end. A temperature detection probe (36) is provided in the middle of the upper end of the floating plate (34). Anti-slip strips are provided on the outer edges of the two rollers (31), and they are respectively supported on the lower ends of the detection channel at the bottom of the cable placement frame (4). The two rollers (31) are used to roll along the bottom of the cable placement frame (4) when the walking mechanism (2) moves. During the rolling process of the rollers (31), the two ends of the floating plate (34) bounce upward and embed into the notch (311) that passes above, so that the temperature detection probe (36) protrudes above the roller (31) and contacts the cable, or is squeezed downward by the rim of the roller (31) to the inside, thereby separating from the cable.
7. The temperature detection device for thermal power plant cables according to claim 1, characterized in that: The lid (11) is hinged to the upper long side of the detection box (1) on one side, and the lid (11) is provided with a locking structure on the other side for locking with the detection box (1) in its closed state.
8. The temperature detection device for thermal power plant cables according to claim 7, characterized in that: The locking structure includes buckles (112) at both ends of the other side of the cover (11). A tightening knob (12) is threaded onto the buckle (112). When the cover (11) is closed, the buckle (112) is pressed against the other side of the test box (1). The tightening knob (12) is used to be turned under external force until it abuts or separates from the other side of the test box (1).
9. A temperature detection device for thermal power plant cables according to any one of claims 1 to 8, characterized in that: The walking mechanism (2) includes a lead screw (21), a lead screw seat (22), and a motor (23). The two ends of the lead screw (21) are rotatably assembled with the two side walls of the detection box (1). The lead screw seat (22) is screwed onto the lead screw (21) and contacts the bottom wall of the detection box (1). The drive shaft of the motor (23) and one end of the lead screw (21) are coaxially mounted with pulleys. A belt is wrapped around the two pulleys. The intermittent temperature monitoring component (3) is mounted on the upper end of the lead screw seat (22).
10. A temperature detection device for thermal power plant cables according to claim 9, characterized in that: The detection box (1) is equipped with a power supply and a controller on its outer surface. The controller is connected to the power supply and the motor (23) respectively.