A water leakage prevention device for a water supply pipe of a water source well of a thermal power plant

Abstract

A kind of water source well upper water pipe leak-proof device of thermal power plant, it is characterized in that, including: track walking mechanism, track folding mechanism, autorotation mechanism, repair mechanism, detection inductor and expandable ring structure;It walks on pipeline by track walking mechanism, simultaneously autorotation mechanism autorotation drives detection inductor to detect whether there is leakage in all directions, when detecting that there is leakage, the repair mechanism in this device can automatically repair leakage, this device integrates detection and repair, avoids the problem that pipeline is too high and manual repair cannot be carried out, also avoids the problem that pipeline leakage is not discovered in time, so that manual is greatly saved, and work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair, and in particular to a leak prevention device for water pipes above water source wells in thermal power plants. Background Technology

[0002] In the pipe repair industry, pipe repair devices can only be manually installed to repair pipes after a leak is discovered. For example, Chinese invention patent No. 202021086970.5 discloses a rapid repair device for sewage pipes used in sewage treatment, including an installation plate. A repair semi-circular sleeve is fixedly connected to the inner side of the installation plate. Metal sheets are welded to both ends of the repair semi-circular sleeve. A rubber sealing gasket is installed inside the repair semi-circular sleeve. Sealing and leak-sealing patches are connected to both ends of the inner side of the repair semi-circular sleeve near the metal sheets. This utility model relates to the field of sewage pipe technology. Through the repair semi-circular sleeve and the rubber sealing gasket, it is easy to squeeze the ruptured part of the sewage pipe to achieve a preliminary seal. Then, through the metal sheet, the guide groove, the liquid inlet hole, and the guide hole, it is easy to apply glue to the inner side of the plastic sheet. It can bond the plastic sheet to the sewage pipe, and the excess glue can be further sealed through the sealing and leak-sealing patch. This structure has a good sealing effect and avoids the leakage caused by the increased water pressure in the sewage pipe after rapid repair by traditional repair devices, which would reduce the sealing effect.

[0003] Through research on the aforementioned pipe repair device, it was found that it cannot automatically detect whether a pipe is leaking or automatically repair leaks. Therefore, we urgently need to invent a device that can automatically detect whether a pipe is leaking and automatically repair leaks to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a leak-proof device for water pipes in thermal power plant water source wells. The device uses a tracked walking mechanism to move up and down the pipe, while a rotating mechanism drives a detection sensor to detect leaks in all directions. When a leak is detected, the device's repair mechanism automatically repairs the leak. This device integrates detection and repair, avoiding the problem of pipes being too high for manual repair and preventing delayed leak detection, thus greatly saving manpower and improving work efficiency.

[0005] The technical solution used in this invention is: a leak prevention device for water pipes above water source wells in thermal power plants, comprising: a tracked walking mechanism, a track retraction mechanism, a rotation mechanism, a repair mechanism, a detection sensor, and an expandable ring structure;

[0006] The self-rotating mechanism has an outer ring at each of its upper and lower ends. The outer ring is fitted onto a large gear shaft, which is connected to an expandable ring structure. Three track-walking mechanisms are mounted on the expandable ring structure, arranged in a triangular symmetrical pattern. An electric cylinder in the track retraction mechanism is mounted on a support column in the track-walking mechanism. The electric cylinder can control the retraction and unfolding of the track by extending and retracting. The expandable ring structure also has a repair mechanism. Three detection sensors are provided on the surface of the outer ring. The detection sensors can follow the self-rotating mechanism to check for damage in various directions of the pipe wall. When the detection sensors detect damage to the pipe wall, the repair mechanism repairs the damaged area by rotating.

[0007] Furthermore, the aforementioned anti-leakage device for water pipes above water source wells in thermal power plants is characterized in that the tracked walking mechanism includes: a support column, a track, a motor, a drive wheel, a driven wheel, a belt, an axle, a power wheel, a support wheel, a drag wheel, a torsion spring, and extension rods; the upper and lower ends of the support column are respectively mounted on upper and lower expandable circular structures; the motor is fixed to the upper end of the support column and is connected to the drive wheel; a belt is provided between the drive wheel and the driven wheel; the driven wheel and the upper power wheel share the same axle, through which power is transmitted from the driven wheel to the power wheel; a power wheel is also provided on the lower side of the support column, which only provides support for the track; four extension rods are mounted on the support column, each extension rod having a support wheel at its end; the support wheels are arranged at equal intervals; a torsion spring is provided on the surface of the extension rod, and the other two ends of the torsion spring are respectively engaged with the protrusions of the support column and the extension rod; three drag wheels are also mounted on the support column.

[0008] Furthermore, the aforementioned anti-leakage device for water pipes in a thermal power plant water source well is characterized in that the track retraction mechanism includes: a slide rod, a bent lever, a straight lever, and an electric cylinder; the electric cylinder is mounted on the surface of a support column, and its top end is connected to the slide rod to control the slide rod's up and down movement; four straight levers are evenly arranged on the slide rod; the bent lever is fixed to the support column at its middle position and its end is connected to the slide rod.

[0009] Furthermore, the aforementioned anti-leakage device for water pipes above water source wells in thermal power plants is characterized in that the self-rotating mechanism comprises: a column, an outer ring, a large gear shaft, a second motor, a small gear, and an outer wall support wheel; the self-rotating mechanism has three columns in the middle, each column is equipped with two outer wall support wheels, the upper and lower ends of the columns are respectively connected to the outer ring, the outer ring is fitted on the large gear shaft, the second motor is mounted on the outer ring, the second motor is connected to the small gear, and the teeth of the small gear mesh with the teeth of the large gear shaft.

[0010] Furthermore, the aforementioned leak-proof device for water pipes in thermal power plant water source wells is characterized in that the repair mechanism comprises: a mounting plate, a cylinder, a third motor, a slider extension rod, a second driving wheel, a second driven wheel, a second belt, a second electric cylinder, a fourth motor, a first gear, a second gear, a double-axis lead screw slide, a blade, a particle clamping bar, a limiting block, a smoothing clamping bar, and repair tape; the upper and lower ends of the mounting plate are respectively mounted on upper and lower expandable circular structures, and each of the upper and lower ends of the mounting plate is provided with a cylinder, the other end of which is connected to the middle part of the slider extension rod. The connection is as follows: one end of the slider extension rod is hinged to the mounting plate, and the other end is equipped with a particle clamping rod and a smooth clamping rod. A motor three is installed on the slider extension rod, and the motor three is connected to the driving wheel two. A belt two is provided between the driving wheel two and the driven wheel two. A limit block is provided between the driven wheel two and the mounting plate. The limit block is connected to the slider extension rod and the electric cylinder two respectively. The motor four is mounted on the mounting plate and connected to gear one. Gear one and gear two mesh. Gear two is mounted on a double optical axis lead screw slide. A blade is provided on the double optical axis lead screw slide.

[0011] Furthermore, the aforementioned anti-leakage device for water pipes in thermal power plant water source wells is characterized in that a power wheel that does not provide power is provided on the lower side of the track walking mechanism. Since the diameter of the power wheel is larger than that of the towing wheel, the presence of a power wheel on the lower side of the track walking mechanism can more effectively increase the contact area with the track and more effectively support the track.

[0012] Furthermore, the aforementioned anti-leakage device for water pipes in a thermal power plant water source well is characterized in that the torsion spring not only resets the support wheel, but also provides shock absorption when the tracked walking mechanism encounters small stones stuck to the pipe during its up-and-down movement.

[0013] Furthermore, the aforementioned anti-leakage device for water pipes in a thermal power plant water source well is characterized in that the sliding rod itself can cooperate with the support column in the track walking mechanism to form a limit, preventing the sliding rod from sliding too far.

[0014] Because the present invention adopts the above-described technical solution, the present invention has the following advantages:

[0015] (1) By setting up a tracked walking mechanism, a self-rotating mechanism and a detection sensor, the present invention can replace manual labor and periodically detect whether the water pipe of the water source well of the thermal power plant is leaking. During the detection, the detection sensor can detect the water pipe of the water source well of the thermal power plant in all directions through the up and down movement of the tracked walking mechanism and the rotation of the self-rotating mechanism.

[0016] (2) When the water pipe of the water source well of the thermal power plant leaks, the location can be located in time, saving repair time;

[0017] (3) When the detection sensor detects a leak in the water pipe of the water source well of the thermal power plant, the leak can be directly repaired by the repair mechanism without the need for manual climbing to the designated location for repair, thus saving manpower. Attached Figure Description

[0018] Figure 1 This is an isometric side view of the overall structure of the present invention.

[0019] Figure 2 This is a side view of the overall mechanism of the present invention.

[0020] Figure 3 This is a top view of the overall structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the tracked walking mechanism of the present invention.

[0022] Figure 5 This is a schematic diagram of the track retraction mechanism of the present invention.

[0023] Figure 6 This is an isometric side view of the rotation mechanism of the present invention.

[0024] Figure 7 This is a detailed view of the repair mechanism of the present invention.

[0025] Figure 8 This is a detailed view of the repair mechanism of the present invention.

[0026] Figure 9 This is a detailed view of the repair mechanism of the present invention.

[0027] Figure 10 This is a detailed view of the expandable annular structure of the present invention.

[0028] Reference numerals: 1- Tracked walking mechanism; 2- Track retraction mechanism; 3- Rotation mechanism; 4- Repair mechanism; 5- Detection sensor; 6- Expandable ring structure; 101- Support column; 102- Track; 103- Motor 1; 104- Drive wheel 1; 105- Driven wheel 1; 106- Belt 1; 107- Axle; 108- Drive wheel; 109- Support wheel; 110- Tractor wheel; 111- Torsion spring; 112- Extension rod; 201- Slide rod; 202- Bent lever; 203- Straight lever; 204- Electric cylinder 1; 301- Column; 302- Outer ring; 303- Large gear Shaft; 304-Motor II; 305-Pinary Gear; 306-External Wall Support Wheel; 401-Mounting Plate; 402-Cylinder; 403-Motor III; 404-Slider Extension Rod; 405-Driving Wheel II; 406-Driven Wheel II; 407-Belt II; 408-Electric Cylinder II; 409-Motor IV; 410-Gear I; 411-Gear II; 412-Double-Axis Lead Screw Slide Table; 413-Blade; 414-Particle Clamping Rod; 415-Limit Block; 416-Smooth Clamping Rod; 417-Repair Tape; 601-Slider; 602-Tripartite Ring; 603-Spring; 604-Connecting Bracket. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; however, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Examples, such as Figure 1-9As shown, a leak-proof device for water pipes above a thermal power plant's water source well includes: a tracked walking mechanism 1, a track retraction mechanism 2, a rotation mechanism 3, a repair mechanism 4, a detection sensor 5, and an expandable ring structure 6. The rotation mechanism 3 has an outer ring 302 at each of its upper and lower ends, which is fitted onto a large gear shaft 303. The large gear shaft 303 is connected to the expandable ring structure 6. Three tracked walking mechanisms 1 are mounted on the expandable ring structure 6, arranged in a triangular symmetrical pattern. An electric cylinder 204 in the track retraction mechanism 2 is mounted on a support column 101 in the tracked walking mechanism 1. The electric cylinder 204 controls the retraction and extension of the track 102 through extension and retraction. The expandable ring structure 6 also includes a repair mechanism. 4. The outer ring 302 is equipped with three detection sensors 5. When the water pipe of the power plant's water source well needs to be inspected, the track 102 in the track walking mechanism 1 is in contact with the water pipe. With the help of the friction between the track 102 and the water pipe, it can move up and down. While the track walking mechanism 1 is moving up and down, the motor 304 in the self-rotation mechanism 3 drives the small gear 305 to rotate. At this time, the large gear shaft 303 cannot rotate. Therefore, the small gear 305 can drive the outer ring 302 to rotate. The rotation of the outer ring 302 can drive the detection sensors 5 to rotate. At this time, the detection sensors 5 can not only rotate 360° to detect, but also detect up and down. It can completely detect whether the entire surface of the water pipe of the water source well is leaking. When the detection sensor 5 detects that there is damage to the pipe wall, the repair mechanism 4 repairs the damaged part by rotating.

[0031] In one optional embodiment of the present invention, such as Figure 4As shown, except for the same parts as in the previous embodiment, the tracked walking mechanism 1 includes: a support column 101, a track 102, a motor 103, a drive wheel 104, a driven wheel 105, a belt 106, an axle 107, a power wheel 108, a support wheel 109, a trailing wheel 110, a torsion spring 111, and an extension rod 112; the upper and lower ends of the support column 101 are respectively mounted on the upper and lower expandable circular structures 6, and the motor 103 is fixed to the upper end of the support column 101. Track 103 is connected to drive wheel 104. A belt 106 connects drive wheel 104 and driven wheel 105. Driven wheel 105 shares the same axle 107 with the upper drive wheel 108. Power is transmitted from driven wheel 105 to drive wheel 108 via this axle 107. A drive wheel 108 is also located under support column 101. This drive wheel 108 only supports track 102. Because the drive wheel 108 has a larger diameter than the track roller 110, The tracked walking mechanism 1 has a drive wheel 108 on its lower side, which can more effectively increase the contact area with the track 102. Four extension rods 112 are mounted on the support column 101, and each extension rod 112 has a support wheel 109 at its end. The support wheels 109 are arranged at equal intervals. A torsion spring 111 is provided on the surface of each extension rod 112, and the other two ends of the torsion spring 111 are respectively engaged with the protrusions of the support column 101 and the extension rod 112. Three trailing wheels 110 are also mounted on the support column 101. When the tracked walking mechanism 1 needs to move up and down, the support wheel 109 supports the track 102 to fit against the pipe and generate friction. The trailing wheel 110 ensures that the track 102 is in a taut state. The motor 103 rotates, driving the drive wheel 104 to move. The drive wheel 104 transmits power to the driven wheel 105 through the belt 106. The driven wheel 104 transmits power to the drive wheel 108. The drive wheel 108 generates friction with the track 102, enabling the tracked walking mechanism 1 to move up and down.

[0032] In one optional embodiment of the present invention, such as Figure 4-5As shown, except for the same parts as in the previous embodiment, the track retraction mechanism 2 includes: a slide rod 201, a bent lever 202, a straight lever 203, and an electric cylinder 204. The electric cylinder 204 is mounted on the surface of the support column 101, and its top end is connected to the slide rod 201 to control the up-and-down sliding of the slide rod 201. Four straight levers 203 are evenly arranged on the slide rod 201. The middle position of the bent lever 202 is fixed on the support column 101, and its end is connected to the slide rod 201. When the track 102 needs to be retracted, the electric cylinder 204 in the track retraction mechanism 2 is activated. The electric cylinder 204 pushes the slide rod 201 upward, and the straight lever 203 on the slide rod 201 drives the extension rod 112 to move upward. At this time, the support wheel 109 moves upward with the extension rod 112. At this time, the track 102 is no longer in contact with the pipe, and the slide rod 201 moves upward. The bending lever 202 on the other side is activated, pressing down on the track 102 on the other side to keep it taut and prevent it from falling off. The sliding rod 201 can cooperate with the support column 101 in the track walking mechanism 1 to form a limit. When the limit is triggered, the track retraction mechanism 2 can retract the track 102. When the track 102 needs to be unfolded, the electric cylinder 204 drives the sliding rod 201 to slide downward. At this time, the torsion spring 111 returns to its deformation, driving the extension rod 112 to move downward. The support wheel 109 lifts the track again, and the bending lever 202 on the other side is activated, no longer pressing down on the track 102 on the other side. When the limit is triggered, the track 102 re-fits the pipe, and the track 102 is fully unfolded. The torsion spring 111 can not only unfold the track 102 by deformation, but also produce a shock absorption effect when the track walking mechanism 1 moves up and down.

[0033] In one optional embodiment of the present invention, such as Figure 6 As shown, except for the same parts as in the previous embodiment, the rotation mechanism 3 includes: a column 301, an outer ring 302, a large gear shaft 303, a second motor 304, a small gear 305, and an outer wall support wheel 306; the rotation mechanism 3 has three columns 301 in the middle, each column 301 is equipped with two outer wall support wheels 306, the upper and lower ends of the columns 301 are respectively connected to the outer ring 302, the outer ring 302 is fitted on the large gear shaft 303, the second motor 304 is mounted on the outer ring 302, the second motor 304 is connected to the small gear 305, and the small gear... The teeth of wheel 305 mesh with the teeth of the large gear shaft 303. When the water pipe of the power plant's water source well needs to be inspected, the motor 304 in the self-rotating mechanism 3 drives the small gear 305 to rotate. At this time, the large gear shaft 303 cannot rotate, so the small gear 305 can drive the outer ring 302 to rotate. When repair is needed, the outer wall support wheel 306 in the self-rotating mechanism 3 supports the inner cement wall outside the pipe to keep the equipment balanced. At this time, the outer ring 302 cannot rotate, so the small gear 305 can drive the large gear shaft 303 to rotate, thereby driving the internal structure to rotate.

[0034] In one optional embodiment of the present invention, such as Figure 7-9 The embodiment shown includes a repair mechanism 4 comprising: a mounting plate 401, a cylinder 402, a third motor 403, a slider extension rod 404, a second driving wheel 405, a second driven wheel 406, a second belt 407, a second electric cylinder 408, a fourth motor 409, a first gear 410, a second gear 411, a double-axis lead screw slide 412, a blade 413, a particle clamping rod 414, a limiting block 415, a smooth clamping rod 416, and repair tape 417; the upper and lower ends of the mounting plate 401 are respectively mounted on the upper and lower expandable... On the annular structure 6, a cylinder 402 is provided at each of the upper and lower ends of the mounting plate. The other end of the cylinder 402 is connected to the middle part of the slider extension rod 404. One end of the slider extension rod 404 is hinged to the mounting plate 401, and the other end is equipped with a particle clamping rod 414 and a smooth clamping rod 416. A motor 3 403 is installed on the slider extension rod 404. The motor 3 403 is connected to the driving wheel 2 405. A belt 2 407 is provided between the driving wheel 2 405 and the driven wheel 2 406. The driven wheel 2 406 is connected to the mounting plate. A limiting block 415 is provided between 401, and the limiting block 415 is connected to the slider extension rod 404 and the electric cylinder 408 respectively. The motor 409 is mounted on the mounting plate 401 and connected to the gear 410. The gear 410 meshes with the gear 411. The gear 411 is mounted on the double optical axis lead screw slide 412, and the double optical axis lead screw slide 412 is provided with a blade 413. When the track retraction mechanism 2 completes the retraction of the track 102, the cylinder 402 is activated, and the cylinder 402 pushes... The slider extends rod 404, pushing the repair tape 417 between the smooth clamping rod 416 and the granular clamping rod 414 to the side of the water pipe, and attaching the repair tape 417 to the water pipe. When the self-rotating mechanism rotates, it will drive the repair mechanism 4 to rotate. At this time, the repair tape 417 can be pasted around the pipe wall. When the leak is blocked, the motor 409 is activated, driving the gear 1 410 and gear 2 411 to move. After gear 2 411 moves, the double optical axis lead screw slide 412 drives the blade 413 to slide and cut the repair tape 417.

[0035] In one optional embodiment of the present invention, such as Figure 7-9In the embodiment shown, a motor 3 403 is mounted on the slider extension rod 404. The motor 3 403 is connected to the driving wheel 2 405. A belt 2 407 is provided between the driving wheel 2 405 and the driven wheel 2 406. A limiting block 415 is provided between the driven wheel 2 406 and the mounting plate 401. The limiting block 415 is connected to the slider extension rod 404 and the electric cylinder 2 408 respectively. When the electric cylinder 2 408 moves backward, it will drive the limiting block 415 to slide backward. The limiting block 415 will drive the driven wheel 2 406, the motor 3 403 on the slider extension rod 404, the driving wheel 2 405, the belt 2 407 and the particle clamping rod 414 to move backward. At this time, the distance between the particle clamping rod 414 and the smooth clamping rod 416 increases, so that a thicker repair tape 417 can be used.

[0036] In one optional embodiment of the present invention, such as Figure 1-10 The illustrated embodiment shows that the expandable annular structure 6 includes: sliders 601, trisection rings 602, springs 603, and connecting brackets 604. The expandable annular structure 6 has three sliders 601, arranged in three equal parts and connected to the large gear shaft 303. The other end of each slider 601 is connected to the middle position of the trisection rings 602. Connecting brackets 604 connect the trisection rings 602. Springs 603 are provided at the connection points of the trisection rings 602. When the tracked walking mechanism 1 moves up and down... When encountering a water pipe interface, the water pipe interface will first contact the slider 601. After contact with the slider 601, the slider 601 is subjected to force and moves outward. The slider 601 drives the tri-sectioned ring 602 to move outward. The connecting bracket 604 between the tri-sectioned rings 602 compresses the spring 603, and the spring 603 undergoes corresponding deformation to ensure that the equipment can pass through. After passing through the water pipe interface, the spring will restore its deformation, driving the tri-sectioned ring 602 to retract inward, and the expandable ring structure 6 returns to its original shape.

[0037] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

Claims

1. A leak-proof device for water pipes above water source wells in thermal power plants, characterized in that, include: Tracked walking mechanism (1), track retraction mechanism (2), rotation mechanism (3), repair mechanism (4), detection sensor (5), and expandable ring structure (6). The self-rotating mechanism (3) has an outer ring (302) at each of its upper and lower ends. The outer ring (302) is fitted onto the large gear shaft (303). The large gear shaft (303) is connected to the expandable ring structure (6). The expandable ring structure (6) is equipped with three track walking mechanisms (1). The track walking mechanisms (1) are arranged in a triangular symmetrical manner on the expandable ring structure (6). The electric cylinder (204) in the track retraction mechanism (2) is installed on the track walking mechanism (2). On the support column (101) in 1), the electric cylinder (204) can control the retraction and unfolding of the track (102) by telescoping. The expandable ring structure (6) is also equipped with a repair mechanism (4). The outer ring (302) has three detection sensors (5) on its surface. The detection sensors (5) can follow the rotation mechanism (3) to check whether there is damage in each direction of the pipe wall. When the detection sensor (5) detects that there is damage in the pipe wall, the repair mechanism (4) repairs the damaged area by rotating. The repair mechanism (4) includes: a mounting plate (401), a cylinder (402), a third motor (403), a slider extension rod (404), a second driving wheel (405), a second driven wheel (406), a second belt (407), a second electric cylinder (408), a fourth motor (409), a first gear (410), a second gear (411), a double-axis lead screw slide (412), a blade (413), a particle clamping rod (414), a limiting block (415), a smooth clamping rod (416), and repair tape (417). The upper and lower ends of the mounting plate (401) are respectively mounted on the upper and lower expandable ring structures (6). Each end of the mounting plate is provided with a cylinder (402). The other end of the cylinder (402) is connected to the middle part of the slider extension rod (404). One end of the slider extension rod (404) is connected to the mounting plate (401). The hinge is connected to the other end, and a particle clamping rod (414) and a smooth clamping rod (416) are installed on the other end. A motor three (403) is installed on the slider extension rod (404). The motor three (403) is connected to the driving wheel two (405). A belt two (407) is provided between the driving wheel two (405) and the driven wheel two (406). A limiting block (415) is provided between the driven wheel two (406) and the mounting plate (401). The limiting block (415) is connected to the slider extension rod (404) and the electric cylinder two (408) respectively. The motor four (409) is mounted on the mounting plate (401) and connected to the gear one (410). The gear one (410) meshes with the gear two (411). The gear two (411) is mounted on the double optical axis screw slide (412). A blade (413) is provided on the double optical axis screw slide (412).

2. The anti-leakage device for water supply pipes in thermal power plant water source wells according to claim 1, characterized in that, The tracked walking mechanism (1) includes: a support column (101), a track (102), a motor (103), a drive wheel (104), a driven wheel (105), a belt (106), an axle (107), a power wheel (108), a support wheel (109), a torsion wheel (110), a torsion spring (111), and an extension rod (112); the upper and lower ends of the support column (101) are respectively mounted on the upper and lower expandable ring structures (6), the motor (103) is fixed to the upper end of the support column (101), the motor (103) is connected to the drive wheel (104), a belt (106) is provided between the drive wheel (104) and the driven wheel (105), and the driven wheel (105) is connected to the upper power wheel (108). 08) They share the same axle (107), through which power is transmitted from the driven wheel (105) to the drive wheel (108). The support column (101) also has a drive wheel (108) on its lower side. This drive wheel (108) only provides support for the track (102). The support column (101) is equipped with four extension rods (112). Each extension rod (112) has a support wheel (109) at its end. The support wheels (109) are arranged at equal distances. The extension rod (112) is provided with a torsion spring (111). The other two ends of the torsion spring (111) are respectively locked on the bosses of the support column (101) and the extension rod (112). The support column (101) is also equipped with three towing wheels (110).

3. The anti-leakage device for water pipes above water source wells in thermal power plants according to claim 2, characterized in that, The track retraction mechanism (2) includes: a slide rod (201), a curved lever (202), a straight lever (203), and an electric cylinder (204); the electric cylinder (204) is installed on the surface of the support column (101), and the top of the electric cylinder (204) is connected to the slide rod (201) to control the slide rod (201) to slide up and down. Four straight levers (203) are evenly arranged on the slide rod (201). The curved lever (202) is fixed in the middle position on the support column (101) and its end is connected to the slide rod (201).

4. The anti-leakage device for water supply pipes in thermal power plant water source wells according to claim 1, characterized in that, The self-rotating mechanism (3) includes: a column (301), an outer ring (302), a large gear shaft (303), a second motor (304), a small gear (305), and an outer wall support wheel (306); the self-rotating mechanism (3) has three columns (301) in the middle, and each column (301) is equipped with two outer wall support wheels (306). The upper and lower ends of the column (301) are respectively connected to the outer ring (302). The outer ring (302) is fitted on the large gear shaft (303). The second motor (304) is mounted on the outer ring (302). The second motor (304) is connected to the small gear (305). The teeth of the small gear (305) mesh with the teeth of the large gear shaft (303).

5. The anti-leakage device for water supply pipes in thermal power plant water source wells according to claim 2, characterized in that, The tracked walking mechanism (1) has a power wheel (108) that does not provide power on its lower side. Since the power wheel (108) has a larger diameter than the towing wheel (110), the presence of a power wheel (108) on the lower side of the tracked walking mechanism (1) can more effectively increase the contact area with the track (102) and more effectively support the track (102).

6. The anti-leakage device for water supply pipes in thermal power plant water source wells according to claim 2, characterized in that, The torsion spring (111) can not only reset the support wheel (109), but also provide shock absorption when the track walking mechanism (1) encounters small stones stuck on the pipe when it moves up and down.

7. The anti-leakage device for water supply pipes in thermal power plant water source wells according to claim 3, characterized in that, The slide bar (201) of the track retraction mechanism (2) can cooperate with the support column (101) in the track walking mechanism (1) to form a limit and prevent the slide bar (201) from sliding too much.

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