Detection device of direct current grounding protection system

Abstract

The utility model relates to the technical field of ground protection system detection, and discloses a DC ground protection system detection device comprising a mounting plate and a detector, the outer wall of the mounting plate is fixedly provided with the detector, the side wall of the mounting plate is slidably connected with a slide plate, and the slide plate is provided with the detector. A sleeve is fixedly mounted on the inner wall of the sliding plate, a grounding rod is clamped to the inner wall of the sleeve, a connector is clamped to the inner wall of the sleeve, a cylinder is fixedly mounted on the side wall of the mounting plate, a grounding wire is wound around the outer wall of the cylinder, and one end of the grounding wire is fixedly mounted in the detector. The other end of the grounding wire is fixedly installed at the top of the connector, limiting grooves are formed in the outer wall of the grounding rod and the outer wall of the connector, according to the detection device of the direct current grounding protection system, the connector and the grounding rod can be rapidly installed or disassembled through the arrangement of the disassembling and assembling mechanism, the structure is simple, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of detection of grounding protection systems, in particular to a detection device for a DC grounding protection system. Background Art

[0002] Energy storage power stations are established to regulate peak and valley electricity consumption. They generally come in two forms: pumped hydropower stations and ultra-large battery packs. They store electricity that would otherwise be wasted during low-peak hours and release it back into the grid during peak hours, solving energy problems. To ensure the safety of staff working at energy storage power stations, grounding protection equipment is usually installed on the DC equipment in these stations.

[0003] The existing detection device of the DC grounding protection system realizes the purpose of removing and replacing the grounding rod by cooperating with the plug-in rod and the socket. However, when the grounding rod needs to be installed with the wire, the lower fixing plate on the grounding rod needs to be connected with the upper fixing plate on the wire. At the same time, the sockets on the two sets of fixing plates need to be kept in a concentric state so that the plug-in rod can pass through the two sets of fixing plates to achieve the fixing effect, which makes installation inconvenient. Utility Model Content

[0004] The purpose of the present utility model is to provide a detection device for a DC grounding protection system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection device for a DC grounding protection system, comprising a mounting plate and a detector, wherein the outer wall of the mounting plate is fixedly mounted with a detector, and the detector controls the DC grounding protection system detection device through RS485 signals, controls the simulated grounding fault control board and the sudden current control board, to test the system status of the DC grounding protection device under different working conditions, thereby determining the functional characteristics of the DC grounding protection device, and the detector uses a highly sensitive anti-interference type sensor, which can improve the sensitivity and anti-interference ability of the fault simulation detection device, so as to more accurately simulate the grounding fault, and the detector applies DSP digital transmission technology, through microcomputer-based DC insulation online fault simulation, and detects the fault point, thereby realizing the online fault of the DC system and improving the accuracy of fault judgment, and the detector uses a resistance control board and a capacitance control board to simulate the fault point, which can achieve the resistance value and capacitance value. The numerical value is controllable, and the detection efficiency is improved compared with the test environment manually built in the laboratory, and the switching cycle is greatly shortened. The side wall of the mounting plate is slidably connected to a slide, and the inner wall of the slide is fixedly installed with a sleeve, and the sleeve and the connector are both made of conductive metal materials, and the inner wall of the sleeve is clamped with a grounding rod, and the inner wall of the sleeve is clamped with a connector, and the side wall of the mounting plate is fixedly installed with a cylinder, and a grounding wire is wound around the outer wall of the cylinder, one end of the grounding wire is fixedly installed inside the detector, and the other end of the grounding wire is fixedly installed on the top of the connector, and the outer walls of the grounding rod and the connector are both provided with limiting grooves, and a disassembly and assembly mechanism is provided on the sleeve, and the connector and the grounding rod can be easily disassembled and assembled by setting the disassembly and assembly mechanism, and a reinforcement mechanism is provided inside the grounding rod, and the pull-out resistance of the grounding rod can be improved by setting the reinforcement mechanism, and the inner wall of the slide is threaded with a bolt, and the disassembly and assembly mechanism includes:

[0006] A limiting rod, the limiting rod being hinged to the inner wall of the sleeve, and a torsion spring being provided at the hinge between the limiting rod and the sleeve;

[0007] a collar rotatably connected to the outer wall of the sleeve;

[0008] The inclined plane block is fixedly mounted on the inner wall of the collar, and the limiting rod can be squeezed by arranging the inclined plane block.

[0009] Preferably, the reinforcement mechanism includes a pressure plate, and the pressure plate is slidably connected to the inner wall of the ground rod.

[0010] Preferably, an inclined plate is fixedly installed on the side wall of the pressure plate, and an anchor rod is slidably connected to the inner wall of the inclined plate. The end of the anchor rod away from the inclined plate passes through the grounding rod, and the anchor rod is slidably connected to the penetration point of the grounding rod. The grounding rod can be reinforced by setting the anchor rod.

[0011] Preferably, a push rod is fixedly installed on the top of the pressure plate, and the end of the push rod away from the pressure plate passes through the grounding rod and fits into the bottom of the connector. The push rod is slidably connected to the penetration point of the grounding rod, and the pressure plate can be squeezed by setting the push rod.

[0012] Preferably, a spring is sleeved on the outer wall of the push rod, one end of the spring is fixedly mounted on the top of the pressure plate, and the other end of the spring is fixedly mounted on the inner wall of the grounding rod. By setting the spring, the pressure plate can be driven to slide and reset.

[0013] Preferably, there are two groups of disassembly and assembly mechanisms, and the two groups of disassembly and assembly mechanisms are mirror-imaged on the outer wall of the sleeve with the slide as the central axis, one end of the limit rod is attached to the inner wall of the limit groove, and the other end of the limit rod is attached to the inner wall of the ring.

[0014] Compared with the prior art, the present invention provides a detection device for a DC grounding protection system, which has the following beneficial effects:

[0015] 1. The detection device of the DC grounding protection system can quickly install or disassemble the connector and the grounding rod through the setting of the disassembly and assembly mechanism. It has a simple structure and is easy to use.

[0016] 2. The detection device of the DC grounding protection system can improve the pull-out resistance of the grounding rod by setting a reinforcement mechanism, so that the grounding rod can be stably inserted into the soil, and further the grounding rod can be stably put into use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the connector and the grounding rod of the present invention in a docking state;

[0019] Figure 3 This is a schematic diagram of the overall structure of the reinforcement mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the collar of the utility model;

[0021] Figure 5 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0022] Figure 6 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B.

[0023] In the figure: 1. Mounting plate; 2. Slide plate; 3. Sleeve; 4. Grounding rod; 5. Connector; 6. Cylinder; 7. Grounding wire; 8. Limiting groove; 9. Disassembly and assembly mechanism; 91. Limiting rod; 92. Ring; 93. Inclined block; 94. Torsion spring; 10. Reinforcement mechanism; 101. Pressure plate; 102. Inclined plate; 103. Anchor rod; 104. Push rod; 105. Spring; 11. Bolt; 12. Detector. DETAILED DESCRIPTION

[0024] like Figure 1-6 As shown, the utility model provides a technical solution: a detection device for a DC grounding protection system, comprising a mounting plate 1 and a detector 12, wherein the outer wall of the mounting plate 1 is fixedly mounted with the detector 12, the side wall of the mounting plate 1 is slidably connected with a slide plate 2, the inner wall of the slide plate 2 is fixedly mounted with a sleeve 3, the inner wall of the sleeve 3 is clamped with a grounding rod 4, the inner wall of the sleeve 3 is clamped with a connector 5, the side wall of the mounting plate 1 is fixedly mounted with a cylinder 6, the outer wall of the cylinder 6 is wound with a grounding wire 7, one end of the grounding wire 7 is fixedly mounted inside the detector 12, the other end of the grounding wire 7 is fixedly mounted on the top of the connector 5, the detector 12 is electrically connected to the connector 5 through the grounding wire 7, the interior of the detector 12 is composed of a resistance control board, a capacitance control board, and a sudden current board, and is controlled by a communication method The resistance control board, the capacitance control board, and the sudden current control board are made. The grounding wire 7 can be reeled up by using the cylinder 6. The outer walls of the grounding rod 4 and the connector 5 are provided with a limit groove 8. The limit rod 91 is used in conjunction with the limit groove 8 to fix the connector 5 or the grounding rod 4 inside the sleeve 3. A disassembly and assembly mechanism 9 is provided on the sleeve 3. The disassembly and assembly mechanism 9 is provided with two groups. The two groups of disassembly and assembly mechanisms 9 are mirror-imaged on the outer wall of the sleeve 3 with the slide plate 2 as the central axis. By providing two groups of disassembly and assembly mechanisms 9, the connector 5 and the grounding rod 4 can be conveniently disassembled and assembled. A reinforcement mechanism 10 is provided inside the grounding rod 4. By providing the reinforcement mechanism 10, the pull-out resistance of the grounding rod 4 can be improved, so that the grounding rod 4 can be stably inserted into the soil. The inner wall of the slide plate 2 is threadedly connected with a bolt 11.

[0025] The above-mentioned disassembly and assembly mechanism 9 includes a limit rod 91, a ring 92, a sloped block 93, and a torsion spring 94; the limit rod 91 is hinged on the inner wall of the sleeve 3, and a torsion spring 94 is provided at the hinge between the limit rod 91 and the sleeve 3. The elasticity of the torsion spring 94 can drive the limit rod 91 to rotate and reset, so that the limit rod 91 can enter the interior of the limit groove 8. One end of the limit rod 91 is attached to the inner wall of the limit groove 8, and the other end of the limit rod 91 is attached to the inner wall of the ring 92. The ring 92 is rotatably connected to the outer wall of the sleeve 3, and the sloped block 93 is fixedly installed on the inner wall of the ring 92. Rotating the ring 92 causes the sloped block 93 on its inner wall to squeeze the limit rod 91, so that the limit rod 91 rotates on the inner wall of the sleeve 3.

[0026] The above-mentioned reinforcement mechanism 10 includes a pressure plate 101, an inclined plate 102, an anchor rod 103, a push rod 104, and a spring 105; the pressure plate 101 is slidably connected to the inner wall of the ground rod 4, and the side wall of the pressure plate 101 is fixedly installed with the inclined plate 102. When the pressure plate 101 moves downward, it will drive the inclined plate 102 to move downward synchronously. The inner wall of the inclined plate 102 is slidably connected with the anchor rod 103. The end of the anchor rod 103 away from the inclined plate 102 passes through the ground rod 4. The anchor rod 103 is slidably connected to the penetration point of the ground rod 4. When the inclined plate 102 moves downward, it squeezes the anchor rod 103, so that the anchor rod 103 slides outward on the inner wall of the ground rod 4. At this time, the anchor rod 103 will be horizontally inserted into the soil. The anchor rod 103 can be used to improve The grounding rod 4 has a tensile strength that allows the grounding rod 4 to be stably inserted into the soil. A push rod 104 is fixedly installed on the top of the pressure plate 101. The end of the push rod 104 away from the pressure plate 101 passes through the grounding rod 4 and fits into the bottom of the connector 5. The push rod 104 is slidably connected to the penetration of the grounding rod 4. The connector 5 will squeeze the push rod 104 during the insertion into the sleeve 3, so that the push rod 104 drives the pressure plate 101 to slide downward on the inner wall of the grounding rod 4. The outer wall of the push rod 104 is sleeved with a spring 105. One end of the spring 105 is fixedly installed on the top of the pressure plate 101, and the other end of the spring 105 is fixedly installed on the inner wall of the grounding rod 4. The pressure plate 101 will stretch the spring 105 when it moves downward.

[0027] Working principle: Rotate the collar 92 to squeeze the inclined block 93 on its inner wall to squeeze the limiting rod 91, so that the limiting rod 91 rotates on the inner wall of the sleeve 3 and compresses the torsion spring 94, so that the limiting rod 91 gradually disengages from the limiting groove 8. When the limiting rod 91 is completely out of the limiting groove 8, the grounding rod 4 and the connector 5 can be pulled out from the inside of the sleeve 3, or the grounding rod 4 and the connector 5 can be inserted into the inside of the sleeve 3, thereby completing the installation or removal of the grounding wire 7 and the grounding rod 4. The structure is simple and easy to use.

[0028] When the device needs to be put into use, the ring 92 below the sleeve 3 is rotated to make the inclined block 93 on its inner wall squeeze the limit rod 91, so that the limit rod 91 rotates on the inner wall of the sleeve 3 and compresses the torsion spring 94. At this time, the grounding rod 4 is inserted into the interior of the sleeve 3, and then the ring 92 is rotated in the opposite direction to make the inclined block 93 on the inner wall of the ring 92 stop squeezing the limit rod 91. At this time, the elasticity of the torsion spring 94 can drive the limit rod 91 to rotate and reset, so that the limit rod 91 can enter the interior of the limit groove 8. At this time, the grounding rod 4 can be fixed inside the sleeve 3 by using the limit rod 91 to cooperate with the limit groove 8. Then, the slide plate 2 is slid downward to make the slide plate 2 drive the sleeve 3 to move downward, so that the sleeve 3 drives the grounding rod 4 to move downward and insert into the soil. The sleeve 3 is then turned to the left by the user, and the collar 92 is rotated to release the inclined surface block 93 on the inner wall of the sleeve 3, thereby squeezing the limiting rod 91 and causing the limiting rod 91 to rotate on the inner wall of the sleeve 3 and compressing the torsion spring 94. At this time, the connector 5 is inserted into the interior of the sleeve 3, and the collar 92 is then rotated in the opposite direction to stop the inclined surface block 93 on the inner wall of the collar 92 from squeezing the limiting rod 91. At this time, the elasticity of the torsion spring 94 can drive the limiting rod 91 to rotate and reset, thereby allowing the limiting rod 91 to enter the interior of the limiting groove 8. At this time, the limiting rod 91 can be used to cooperate with the limiting groove 8 to fix the connector 5 in the interior of the sleeve 3, thereby completing the installation of the connector 5, so that the grounding wire 7 and the grounding rod 4 can be installed together. The connector 5 will squeeze the top when inserted into the sleeve 3. Rod 104, so that the top rod 104 drives the pressure plate 101 to slide downward on the inner wall of the grounding rod 4, and at the same time, the pressure plate 101 will stretch the spring 105. When the pressure plate 101 moves downward, it will drive the inclined plate 102 to move downward synchronously. When the inclined plate 102 moves downward, it will squeeze the anchor rod 103, so that the anchor rod 103 slides outward on the inner wall of the grounding rod 4. At this time, the anchor rod 103 will be inserted into the soil horizontally. The use of the anchor rod 103 can improve the tensile strength of the grounding rod 4, so that the grounding rod 4 can be stably inserted into the soil, and then the grounding rod 4 can be stably put into use. When the grounding rod 4 is put into use, the detector 12 controls the DC grounding protection system detection device through the RS485 signal to control the simulated grounding fault control board and mutation current control board to test the system status of the DC grounding protection device under different working conditions, so as to determine the functional characteristics of the DC grounding protection device, and the detector 12 uses a high-sensitivity anti-interference sensor, which can improve the sensitivity and anti-interference ability of the fault simulation detection device to more accurately simulate the grounding fault. The detector 12 applies DSP digital transmission technology, through microcomputer-based DC insulation online fault simulation, and detects the fault point, to achieve online fault of the DC system and improve the accuracy of fault judgment. The detector 12 uses a resistance control board and a capacitance control board to simulate the fault point, and can make the resistance value and capacitance value controllable. The detection efficiency is improved compared with the test environment manually built in the laboratory, and the switching cycle is greatly shortened.

[0029] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A detection device for a DC grounding protection system, comprising a mounting plate (1) and a detector (12), wherein the detector (12) is fixedly mounted on an outer wall of the mounting plate (1), and characterized in that: The side wall of the mounting plate (1) is slidably connected to a slide plate (2), the inner wall of the slide plate (2) is fixedly mounted with a sleeve (3), the inner wall of the sleeve (3) is clamped with a grounding rod (4), the inner wall of the sleeve (3) is clamped with a connector (5), the side wall of the mounting plate (1) is fixedly mounted with a cylinder (6), the outer wall of the cylinder (6) is wound with a grounding wire (7), one end of the grounding wire (7) is fixedly mounted inside the detector (12), and the other end of the grounding wire (7) is fixedly mounted on the top of the connector (5), the outer walls of the grounding rod (4) and the connector (5) are both provided with a limiting groove (8), a disassembly mechanism (9) is provided on the sleeve (3), a reinforcement mechanism (10) is provided inside the grounding rod (4), the inner wall of the slide plate (2) is threadedly connected with a bolt (11), and the disassembly mechanism (9) comprises: A limiting rod (91), the limiting rod (91) being hinged to the inner wall of the sleeve (3), and a torsion spring (94) being provided at the hinge between the limiting rod (91) and the sleeve (3); a collar (92) rotatably connected to the outer wall of the sleeve (3); An inclined surface block (93) is fixedly mounted on the inner wall of the collar (92).

2. The detection device of a DC grounding protection system according to claim 1, characterized in that: The reinforcement mechanism (10) comprises a pressure plate (101), and the pressure plate (101) is slidably connected to the inner wall of the ground rod (4).

3. The detection device of a DC grounding protection system according to claim 2, characterized in that: An inclined plate (102) is fixedly mounted on the side wall of the pressure plate (101), an anchor rod (103) is slidably connected to the inner wall of the inclined plate (102), an end of the anchor rod (103) away from the inclined plate (102) penetrates the grounding rod (4), and the anchor rod (103) is slidably connected to the penetration point of the grounding rod (4).

4. The detection device of a DC grounding protection system according to claim 2, characterized in that: A push rod (104) is fixedly mounted on the top of the pressure plate (101), and one end of the push rod (104) away from the pressure plate (101) passes through the grounding rod (4) and fits on the bottom of the connector (5), and the push rod (104) is slidably connected to the penetration point of the grounding rod (4).

5. The detection device of a DC grounding protection system according to claim 4, characterized in that: The outer wall of the push rod (104) is sleeved with a spring (105), one end of the spring (105) is fixedly mounted on the top of the pressure plate (101), and the other end of the spring (105) is fixedly mounted on the inner wall of the grounding rod (4).

6. The detection device of a DC grounding protection system according to claim 1, characterized in that: The disassembly and assembly mechanism (9) is provided with two groups. The two groups of disassembly and assembly mechanisms (9) are mirror-imaged on the outer wall of the sleeve (3) with the slide plate (2) as the central axis. One end of the limiting rod (91) is fitted on the inner wall of the limiting groove (8), and the other end of the limiting rod (91) is fitted on the inner wall of the collar (92).

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