A power grid grounding body anticorrosion coating performance detection system

Abstract

This invention discloses a performance testing system for the anti-corrosion coating of a power grid grounding electrode, comprising: an L-shaped support member with an arc-shaped groove, a water outlet groove, a vertical groove, a testing groove, and several drainage holes, wherein the water outlet groove is connected to the drainage holes of the arc-shaped groove, the vertical groove, and the testing groove; a testing assembly, comprising a vertical plate, a piston plate, a spring, a traction rope, an alarm device, a conductive device, and a first driving device, wherein the piston plate can slide within the testing groove, the traction rope connects the vertical plate and the piston plate, the alarm device is electrically connected to the conductive device, and the first driving device is used to drive the vertical plate to move up and down within the vertical groove; two side plates; a water supply device; two second driving devices; two third driving devices; several time relays and a controller. In this invention, the degree of damage to the anti-corrosion coating is quantitatively converted into water flow velocity, and then into the change in the equilibrium position of the piston plate under the gravity and spring force, thereby determining the anti-corrosion performance of the anti-corrosion coating on the power grid grounding electrode.

Description

Technical Field

[0001] This invention relates to the field of power grid grounding electrode testing technology, and in particular to a power grid grounding electrode anti-corrosion coating performance testing system. Background Technology

[0002] The power grid grounding electrode is a critical component in the power system, ensuring the safety of personnel and equipment. It is typically buried deep in the soil to discharge fault currents and lightning currents, and to stabilize the system potential. Due to its long-term exposure to the complex soil environment—humid, with varying pH levels and rich in electrolytes—the metal body of the grounding electrode is highly susceptible to electrochemical corrosion. Corrosion significantly reduces the effective cross-sectional area of ​​the grounding electrode, increases its grounding resistance, and in severe cases, can even lead to electrode breakage, causing the grounding system to fail and directly threatening the safe and stable operation of the power grid. To slow down corrosion, anti-corrosion coatings, such as galvanizing, epoxy resin, and asphalt, are usually applied to the surface of the grounding electrode. However, under the influence of long-term soil stress, microbial erosion, construction damage, and natural aging, these coatings may develop defects such as breakage, peeling, and cracks, gradually reducing their protective performance. Therefore, regularly and effectively testing the performance of the anti-corrosion coatings on operating or newly installed grounding electrodes is extremely important for assessing the health status of the grounding grid and developing maintenance strategies. Currently, there is a lack of efficient, automated, and quantitative dedicated testing methods for the performance of coatings on existing grounding electrodes. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a system for testing the performance of anti-corrosion coatings on power grid grounding electrodes.

[0004] The technical solution of this invention: A performance testing system for anti-corrosion coatings of power grid grounding electrodes, comprising: An L-shaped support member is provided with an arc-shaped groove, a water outlet groove, a vertical groove, a detection groove and several drainage holes. The water outlet groove is connected to the arc-shaped groove, the vertical groove, the detection groove and the drainage holes respectively. The detection assembly includes a vertical plate, a piston plate, a spring, a traction rope, an alarm device, a conductive device, and a first driving device. The piston plate can slide within the detection groove. The spring is disposed within the detection groove. The traction rope connects the vertical plate and the piston plate. The alarm device is electrically connected to the conductive device. The first driving device is used to drive the vertical plate to move up and down within the vertical groove. Two side panels; A water supply device, in conjunction with the first drive device, is used to supply water to the area enclosed by one side of the support member, the power grid grounding body, and the two side plates. Two second drive devices are used to drive the side plate to move back and forth to contact or separate from one side of the support member; Two third drive devices are mounted on the second drive device to drive the rotation of the grounding body of the power grid. A plurality of time relays and a controller, wherein the first drive device, the second drive device, the third drive device and the time relays are all electrically connected to the controller.

[0005] Preferably, the support member is provided with a water outlet groove, and the vertical plate is provided with a through groove; the water supply device includes a water tank, and the water tank is provided with a water inlet and a water outlet.

[0006] Preferably, the conductive device includes a conductive rod and two conductive blocks, the two conductive blocks being spaced apart within the support member wall, and the conductive rod being disposed on the piston plate with its bottom capable of sliding within the detection groove.

[0007] Preferably, the first driving device includes a first motor, a rod, and a pull rope. The first motor is mounted on the support member to drive the rod to rotate in both directions, and the pull rope connects the vertical plate and the rod.

[0008] Preferably, the second driving device includes a second motor, a lead screw, a fixed block, and a moving block. The second motor and the fixed block are both mounted on the support member. The second motor is used to drive the lead screw to rotate on the fixed block. The moving block is rotatably connected to the lead screw and is connected to the side plate.

[0009] Preferably, the side plate is provided with a groove; the third driving device includes a third motor, an elastic telescopic rod and a circular abutment plate, the third motor is disposed on the side plate for driving the elastic telescopic rod to rotate, and the elastic telescopic rod is provided with the abutment plate.

[0010] Preferably, it also includes a water baffle plate, which is disposed on the support member.

[0011] The beneficial effects of this invention are as follows: In this invention, the degree of damage to the anti-corrosion coating is quantitatively converted into water flow velocity, and then into the change in the equilibrium position of the piston plate under the gravity and spring force. When the coating is intact, water seepage is slow, the water volume in the detection tank is insufficient, and the circuit is not connected; after the coating is corroded and damaged, water seepage accelerates, the water volume in the detection tank increases rapidly, pushing the piston plate down to connect the circuit and trigger the alarm, thereby judging the anti-corrosion performance of the anti-corrosion coating on the power grid grounding body, and the detection efficiency is high. Attached Figure Description

[0012] Figure 1 This is a front view of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a cross-sectional view of the overall structure of a preferred embodiment of the present invention; Figure 3 yes Figure 2Enlarged view of a portion of point A in the middle; Figure 4 This is a side view of the support member in a preferred embodiment of the present invention; Figure 5 This is a side view of the vertical plate in a preferred embodiment of the present invention; Figure 6 This is a cross-sectional view of the connection between the third driving device and the side plate in a preferred embodiment of the present invention.

[0013] Reference numerals: Support 10, Arc-shaped groove 101, Water outlet groove 102, Vertical groove 103, Detection groove 104, Drainage hole 105, Water outlet groove 106, Vertical plate 2, Through groove 201, Piston plate 3, Spring 4, Traction rope 5, Side plate 6, Groove 601, Water tank 7, Water inlet hole 701, Water outlet hole 702, Conductive rod 8, Conductive block 9, First motor 11, Line rod 12, Pull rope 13, Second motor 14, Lead screw 15, Fixing block 16, Moving block 17, Third motor 18, Elastic telescopic rod 19, Abutment plate 20, Water baffle plate 21. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0015] Reference Figures 1 to 6 A system for testing the performance of anti-corrosion coatings on power grid grounding electrodes, comprising: An L-shaped support member 10 is provided with an arc-shaped groove 101, a water outlet groove 102, a vertical groove 103, a detection groove 104 and several drainage holes 105. The water outlet groove 102 is connected to the arc-shaped groove 101, the vertical groove 103, the detection groove 104 and the drainage holes 105 respectively. The detection assembly includes a vertical plate 2, a piston plate 3, a spring 4, a traction rope 5, an alarm device, a conductive device, and a first driving device. The piston plate 3 can slide within the detection groove 104. The spring 4 is disposed within the detection groove 104. The traction rope 5 connects the vertical plate 2 and the piston plate 3. The alarm device is electrically connected to the conductive device. The first driving device is used to drive the vertical plate 2 to move up and down within the vertical groove 103. Two side panels 6; A water supply device, in conjunction with the first drive device, is used to supply water to the area enclosed by one side of the support member 10, the power grid grounding body, and the two side plates 6. Two second drive devices are used to drive the side plate 6 to move back and forth to contact or separate from one side of the support member 10; Two third drive devices are mounted on the second drive device to drive the rotation of the grounding body of the power grid. Several time relays and a controller are provided. The first driving device, the second driving device, the third driving device, and the time relays are all electrically connected to the controller. In this invention, after the buried power grid grounding electrode is removed and cleaned, it is placed in the arc-shaped groove 101. The first time relay operates. When the first time relay reaches a preset value, it sends a signal to the controller. The controller controls the second driving device, the third driving device, and the second time relay to operate. The second driving device drives the side plate 6 to move closer to the end of the power grid grounding electrode. The third driving device drives the power grid grounding electrode to rotate a certain angle, after which the side plate 6 is in contact with the bottom of the support member 10 and the end of the power grid grounding electrode. When the second time relay reaches a preset value, it sends a signal to the controller. The controller controls the second driving device and the second time relay to operate. The three drive devices stop working, and the first drive device and the third time relay are activated. The first drive device drives the vertical plate 2 to move upward in the vertical groove 103. The vertical plate 2 pulls the traction rope 5, which in turn drives the piston plate 3 to move upward. The water supply device supplies water to one side of the support member 10, the power grid grounding body, and the area enclosed by the two side plates 6. When the third time relay reaches the preset value, it sends a signal to the controller. The controller then activates the first drive device and the fourth time relay. The first drive device drives the vertical plate 2 to move downward in the vertical groove 103. The piston plate 3 moves downward in the detection groove 104 and contacts the spring 4. The piston plate 3 and the vertical plate... A certain length of traction rope 5 is reserved between the support member 10 and the power grid grounding body. Water will slowly flow from the gap between the support member 10 and the grounding body into the water outlet tank 102. When the fourth time relay reaches the preset value, the water volume in the detection tank 104 is insufficient, and the piston plate 3 does not move down to the required depth due to the gravity of the water. The conductive device cannot work, and the alarm device does not emit an alarm signal. The fourth time relay sends a signal to the controller, which controls the second drive device and the first time relay to work. The second drive device drives the side plate 6 away from the support member 10. When the first time relay reaches the preset value, it sends a signal to the controller, which controls the second drive device to work. The drive unit, the third drive unit, and the second time relay operate, repeating the above operations to detect the corrosion degree of the anti-corrosion coating on the entire power grid grounding electrode. When the anti-corrosion coating on the power grid grounding electrode is corroded, the gap between the support member 10 and the power grid grounding electrode will be larger, flowing through the water outlet 102 into the detection tank 104. The water in the detection tank 104 increases rapidly, and the piston plate 3 is subjected to increasing gravity of the water, continuously squeezing the spring 4. At this time, before the fourth time relay reaches the preset value, the alarm device and the conductive device are connected, and the alarm device sounds an alarm, indicating that the anti-corrosion coating of the power grid grounding electrode has been corroded and is not within the acceptable range. Specifically, the alarm device is an electric bell or a flashing light; after the piston plate 3 stops moving upward, the upper end surface of the piston plate 3 is flush with the bottom surface of the water outlet 102, facilitating the drainage of water in the water outlet 102 from the drain hole 105.

[0016] As a preferred embodiment of the present invention, it may also have the following additional technical features: In this embodiment, the support member 10 is provided with a water outlet trough 106, and the vertical plate 2 is provided with a through groove 201; the water supply device includes a water tank 7, which is provided with a water inlet 701 and a water outlet 702. After the vertical plate 2 moves upward in the vertical groove 103, the through groove 201 communicates with the water outlet 106, and the water in the water tank 7 flows through the water outlet 702 into the water outlet trough 106 and is discharged into the area enclosed by the support member 10, the power grid grounding body, and the two side plates 6.

[0017] In this embodiment, the conductive device includes a conductive rod 8 and two conductive blocks 9. The two conductive blocks 9 are spaced apart within the wall of the support member 10. The conductive rod 8 is mounted on the piston plate 3, and its bottom can slide within the detection groove 104. When the gravity acting on the piston plate 3 increases, the conductive rod 8 moves downward a greater distance and comes into contact with the two conductive blocks 9, triggering an alarm and indicating that the anti-corrosion coating of the power grid grounding electrode has been corroded.

[0018] In this embodiment, the first driving device includes a first motor 11, a rod 12, and a pull rope 13. The first motor 11 is mounted on the support member 10 and drives the rod 12 to rotate in both directions. The pull rope 13 connects the vertical plate 2 and the rod 12. When the first motor 11 operates, it drives the rod 12 to rotate, retracting the pull rope 13. The vertical plate 2 moves upward within the vertical groove 103, and the piston plate 3 moves upward within the detection groove 104 until it is flush with the bottom surface of the water outlet 102. The water previously in the water outlet 102 is discharged from the drain hole 105. When the first motor 11 operates, it drives the rod 12 to rotate in the opposite direction, releasing the pull rope 13. The vertical plate 2 and the piston plate 3 return to their original positions. Specifically, the first motor 11 is electrically connected to the controller.

[0019] In this embodiment, the second driving device includes a second motor 14, a lead screw 15, a fixed block 16, and a moving block 17. The second motor 14 and the fixed block 16 are both mounted on the support member 10. The second motor 14 drives the lead screw 15 to rotate on the fixed block 16. The moving block 17 is rotatably connected to the lead screw 15 and connected to the side plate 6. The operation of the second motor 14 drives the lead screw 15 to rotate forward and backward, causing the moving block 17 to move back and forth on the lead screw 15, thereby causing the side plate 6 to move back and forth and contact or separate from one side of the support member 10. Specifically, the second motor 14 is electrically connected to the controller. The second driving device also includes a guide rod, which is disposed between the second motor 14 and the fixed block 16. The moving block 17 is sleeved on the guide rod, enabling the moving block 17 to move linearly. The second motor 14, the lead screw 15, the fixed block 16, the moving block 17, and the guide rod constitute a lead screw mechanism.

[0020] In this embodiment, the side plate 6 is provided with a groove 601; the third driving device includes a third motor 18, an elastic telescopic rod 19, and a circular abutment plate 20. The third motor 18 is mounted on the side plate 6 to drive the elastic telescopic rod 19 to rotate, and the elastic telescopic rod 19 is provided with the abutment plate 20. During the movement of the side plate 6 toward the support member 10, the abutment plate 20 extends out of the groove 601. When the abutment plate 20 contacts the end face of the power grid grounding body, it will squeeze the elastic telescopic rod 19. The two abutment plates 20 clamp the power grid grounding body. The third motor 18 drives the elastic telescopic rod 19 to rotate, which in turn drives the abutment plate 20 to rotate, causing the power grid grounding body to rotate at a certain angle. After the side plate 6 contacts the end face of the power grid grounding body, the abutment plate 20 engages with the groove 601. Specifically, the third motor 18 is electrically connected to the controller; the elastic telescopic rod 19 includes a T-shaped slide rod, a spring and an outer tube. One end of the slide rod is square and can slide inside the outer tube. The spring is set inside the outer tube and the outer tube is connected to the abutment plate 20. The other end of the slide rod is round and is connected to the output end of the third motor 18.

[0021] In this embodiment, a baffle plate 21 is also included, which is disposed on the support member 10. It blocks the water discharged from the water outlet 106 to prevent water from flowing to the right side of the power grid grounding electrode.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for testing the performance of anti-corrosion coatings on power grid grounding electrodes, characterized in that, include: An L-shaped support member (10) is provided with an arc-shaped groove (101), a water outlet groove (102), a vertical groove (103), a detection groove (104), and several drainage holes (105). The water outlet groove (102) is connected to the arc-shaped groove (101), the vertical groove (103), the detection groove (104), and the drainage holes (105) respectively. The detection assembly includes a vertical plate (2), a piston plate (3), a spring (4), a traction rope (5), an alarm device, a conductive device, and a first driving device. The piston plate (3) can slide in the detection groove (104). The spring (4) is disposed in the detection groove (104). The traction rope (5) connects the vertical plate (2) and the piston plate (3). The alarm device is electrically connected to the conductive device. The first driving device is used to drive the vertical plate (2) to move up and down in the vertical groove (103). Two side panels (6); A water supply device, in conjunction with the first drive device, is used to supply water to the area enclosed by one side of the support member (10), the power grid grounding body, and the two side plates (6); Two second drive devices are used to drive the side plate (6) to move back and forth to contact or separate from one side of the support member (10); Two third drive devices are mounted on the second drive device to drive the rotation of the grounding body of the power grid. A plurality of time relays and a controller, wherein the first drive device, the second drive device, the third drive device and the time relays are all electrically connected to the controller.

2. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: The support member (10) is provided with a water outlet groove (106), and the vertical plate (2) is provided with a through groove (201); the water supply device includes a water tank (7), and the water tank (7) is provided with a water inlet (701) and a water outlet (702).

3. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: The conductive device includes a conductive rod (8) and two conductive blocks (9). The two conductive blocks (9) are spaced apart in the wall of the support member (10). The conductive rod (8) is disposed on the piston plate (3) and its bottom can slide in the detection groove (104).

4. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: The first driving device includes a first motor (11), a rod (12) and a pull rope (13). The first motor (11) is mounted on the support (10) to drive the rod (12) to rotate in both directions. The pull rope (13) connects the vertical plate (2) and the rod (12).

5. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: The second driving device includes a second motor (14), a lead screw (15), a fixed block (16), and a moving block (17). The second motor (14) and the fixed block (16) are both mounted on the support member (10). The second motor (14) is used to drive the lead screw (15) to rotate on the fixed block (16). The moving block (17) is rotatably connected to the lead screw (15) and is connected to the side plate (6).

6. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: The side plate (6) is provided with a groove (601); the third driving device includes a third motor (18), an elastic telescopic rod (19) and a circular abutment plate (20). The third motor (18) is provided on the side plate (6) to drive the elastic telescopic rod (19) to rotate. The elastic telescopic rod (19) is provided with the abutment plate (20).

7. The power grid grounding electrode anti-corrosion coating performance testing system according to claim 1, characterized in that: It also includes a baffle plate (21) which is disposed on the support (10).

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