Batch withstand voltage detection method for insulating rods

Abstract

The invention discloses a batch withstand voltage detection method for insulating rods, and belongs to the technical field of power systems. A batch withstand voltage detection method for insulating rods comprises the following steps: S1, during withstand voltage detection of the insulating rods, placing a plurality of insulating rods in different detection positions of detection equipment in sequence; s2, each detection position of the inspection equipment clamps and positions the insulating rod matched with the detection position; s3, enabling the inspection equipment to be connected with the ground wire and a high-voltage test wire of the withstand voltage test equipment; s4, insulating rod voltage-withstanding equipment inspection is carried out by utilizing voltage-withstanding test equipment, and sectional type transverse detection of the insulating rod is realized; according to the invention, the inspection equipment clamps and positions the insulating rod quickly after placing the insulating rod, the operation is simple and quick, and the inspection efficiency of the insulating rod is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and particularly to a method for batch withstand voltage detection of insulating rods. Background Art

[0002] For high-voltage electrical equipment operating in the power grid, when there are insulation defects inside due to factors such as poor manufacturing, aging, and external force damage, it will cause equipment failures or insulation accidents, seriously affecting the normal operation of the power grid. To prevent such major safety accidents, the current traditional practice is to regularly cut off power for preventive tests and maintenance after the equipment is put into operation, so as to detect insulation defects inside the equipment in a timely manner. However, the test conditions of the power-off preventive test are quite different from the operating state. The dielectric loss test is usually carried out at a voltage of 10 kV, which cannot correctly diagnose the insulation condition of high-voltage equipment under operating conditions, and it is even more difficult to detect defects that develop between two preventive tests, which will directly affect the test effect of the preventive test.

[0003] At present, domestic high-voltage insulation live tests mainly focus on several aspects such as zinc oxide arresters and capacitive equipment. More and more on-line monitoring devices have been put into operation, and whether their working status is normal is directly related to the assessment of the safety of the power grid system. Therefore, the detection and inspection of such on-line monitoring devices are extremely urgent.

[0004] The insulating rod is one of the commonly used safety tools. Safety tools such as insulating rods must be subjected to regular power frequency withstand voltage tests at regular intervals to ensure that the insulation performance meets the requirements and eliminate potential safety hazards. When the existing insulating rods are calibrated, most of them use the method of calibrating one by one for each single rod, and the calibration efficiency is relatively low. The Chinese invention with the application number CN202111455756.1 in the prior art discloses an insulating rod calibration system and a calibration method, including a fixed insulating support device, a left movable grounding device, and a right movable grounding device, which can complete the sectional calibration of multiple groups of insulating rods, greatly improving the calibration efficiency of insulating rods and being applicable to application occasions with voltage levels of experimental instruments and laboratory space limitations. However, in its specific operation steps, it is necessary to first adjust the two movable grounding devices to be symmetrically distributed relative to the fixed insulating support device, then control the clamping part to open, then place the multiple insulating rods to be calibrated into the corresponding insulating rod clamps in sequence, and then control the clamping part to clamp and position the insulating rods placed in the insulating rod clamps. The entire process of placing and positioning the insulating rods is relatively cumbersome, resulting in a still low calibration efficiency of the insulating rods. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art, and a method for batch withstand voltage detection of insulating rods is proposed.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A batch voltage withstand detection method for insulating rods, comprising the following steps:

[0008] S1: When performing voltage withstand detection on insulating rods, place multiple insulating rods in different detection positions of the inspection equipment in sequence;

[0009] S2: Each detection position of the inspection equipment clamps and positions the insulating rod that matches it;

[0010] S3: Connect the inspection equipment to the ground wire and the high-voltage test wire of the voltage withstand test equipment;

[0011] S4: Use the voltage withstand test equipment to check the voltage withstand equipment of the insulating rod, and realize segmented horizontal detection of the insulating rod.

[0012] Preferably, the inspection equipment includes a base and multiple groups of inspection parts arranged on the base. Each group of inspection parts includes a fixed insulating support structure and two identical mobile grounding structures. A displacement component for driving the two mobile grounding structures to move relative to each other is arranged on the base. A positioning component for positioning the insulating rod is arranged on each mobile grounding structure. A voltage withstand test equipment wiring terminal is arranged at the top of the fixed insulating support structure. The positioning component on each mobile grounding structure includes a grounding shell. A ground wire connecting piece is arranged at the lower end of the grounding shell. The grounding shell is connected with a grounding electrode through the ground wire connecting piece.

[0013] Preferably, the displacement component includes a bidirectional screw rotatably connected to the base, two insulating sliders threadedly connected to the bidirectional screw and slidably connected inside the base, and a driving motor arranged on the base and used for driving the bidirectional screw to rotate. The two insulating sliders are respectively connected to the two groups of mobile grounding structures in a one-to-one correspondence.

[0014] Preferably, the fixed insulating support structure includes an insulating bracket fixedly connected to the base and an arc-shaped cross arm arranged on the top of the insulating bracket. The voltage withstand test equipment wiring terminal is arranged at the front end of the arc-shaped cross arm. The arc-shaped cross arm is electrically connected to the voltage withstand test equipment wiring terminal.

[0015] Preferably, the mobile grounding structure includes a moving plate connected to the insulating slider and a grounding bracket arranged on the moving plate. The grounding shell is fixedly arranged on the top of the grounding bracket.

[0016] Preferably, the positioning component includes a first elastic telescopic rod and a second elastic telescopic rod fixedly arranged inside the grounding shell. One end of the first elastic telescopic rod far from the inner wall of the grounding shell is connected with a lower clamp seat sliding horizontally inside the grounding shell. One end of the second elastic telescopic rod far from the inner wall of the grounding shell is connected with an upper clamp seat sliding vertically inside the grounding shell.

[0017] Preferably, a wedge block is fixedly arranged on the lower clamping seat, a force receiving block which is movably abutted against the wedge block is fixedly arranged on the upper clamping seat, and a movable groove for the wedge block to move is formed in the force receiving block.

[0018] Preferably, a connecting rod is fixedly arranged on the force receiving block, a lifting plate is connected to one end of the connecting rod away from the force receiving block, an auxiliary support seat is fixedly arranged on the lifting plate, and the height of the bottom inner wall of the auxiliary support seat is the same as that of the bottom inner wall of the arc-shaped cross arm.

[0019] Preferably, the heights of multiple inspection parts on the base decrease sequentially from back to front. The base is connected with a storage box for placing insulating rods through a connecting plate. The height of the front end of the bottom opening of the storage box is higher than that of the rear end. A material guiding inclined plate is fixedly arranged on the side of the auxiliary support seat.

[0020] Preferably, the ground wire connecting piece includes a ground wire connecting bolt arranged on the grounding shell. One end of the ground wire is sleeved on the ground wire connecting bolt through an annular ground wire connecting sleeve. A pressing nut is threadedly connected to the ground wire connecting bolt, and the other end of the ground wire is connected to a grounding electrode.

[0021] Compared with the prior art, the present invention provides a method for batch withstand voltage detection of insulating rods, which has the following beneficial effects:

[0022] 1. In this method for batch withstand voltage detection of insulating rods, while adjusting the distance between the two movable grounding structures and the fixed insulating support structure, automatic positioning of the insulating rods is completed, realizing segmented horizontal detection of the insulating rods. The operation is simple and convenient, which is convenient for improving the detection efficiency.

[0023] 2. In this method for batch withstand voltage detection of insulating rods, when the lower clamping seats of the upper positioning components on the two movable grounding structures are simultaneously stressed, when the displacement component still drives the grounding shell to move towards the fixed insulating support structure, the lower clamping seat cannot move continuously, the first elastic telescopic rod is compressed, the force receiving block moves relative to the wedge block, and the force receiving block drives the upper clamping seat to move downward. The upper clamping seat cooperates with the lower clamping seat to clamp and position the end of the insulating rod, realizing rapid automatic clamping and positioning of the insulating rod.

[0024] 3. In this method for batch withstand voltage detection of insulating rods, by arranging a storage box and an auxiliary support seat, the insulating rod at the bottom of the storage box first falls on the arc-shaped cross arm and the auxiliary support seat directly below, and then other insulating rods slide on the top of the insulating rods that have already fallen and placed, and slide down along the material guiding inclined plate to the arc-shaped cross arm of the next inspection part, realizing rapid lowering of multiple insulating rods to be detected. The operation is simple and fast, improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the present invention Figure 1 ;

[0026] Figure 2 Schematic structure of the present invention Figure 2 ;

[0027] Figure 3 Of the present invention Figure 2 Partial enlarged schematic structure diagram of part A in

[0028] Figure 4 Schematic cross-sectional structure diagram of the present invention

[0029] Figure 5 Schematic structure diagram of the inspection part of the present invention

[0030] Figure 6 Schematic cross-sectional structure diagram of the grounding housing of the present invention

[0031] Figure 7 Schematic structure diagram of the auxiliary support base and the arc-shaped cross arm of the present invention

[0032] In the figure: 1, base; 2, fixed insulation support structure; 201, insulation bracket; 202, arc-shaped cross arm; 3, mobile grounding structure; 301, moving plate; 302, grounding bracket; 4, insulating rod; 5, wiring terminal of the withstand voltage test equipment; 6, grounding housing; 601, first elastic telescopic rod; 602, second elastic telescopic rod; 603, lower clamping seat; 604, upper clamping seat; 7, bidirectional screw; 701, insulating slider; 702, driving motor; 8, wedge block; 9, force-receiving block; 901, movable groove; 902, connecting rod; 10, lifting plate; 1001, auxiliary support base; 11, storage box; 12, guide chute; 13, ground wire connector. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Example: Refer to Figure 1 、 Figure 2 and Figure 4 , a method for batch withstand voltage detection of insulating rods, comprising the following steps:

[0037] S1: When performing the withstand voltage detection of the insulating rod 4, place a plurality of insulating rods 4 in different detection positions of the inspection equipment in sequence;

[0038] S2: Each detection position of the inspection equipment clamps and positions the insulating rod 4 matching it;

[0039] S3: Connect the inspection equipment to the ground wire and the high-voltage test wire of the withstand voltage test equipment;

[0040] S4: Use the withstand voltage test equipment to check the withstand voltage equipment of the insulating rod 4 to realize the segmented horizontal detection of the insulating rod 4.

[0041] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , as a preferred technical solution of the present invention, the inspection equipment includes a base 1 and multiple groups of inspection parts arranged on the base 1. Each group of inspection parts includes a fixed insulating support structure 2 and two sets of movable grounding structures 3 with the same structure. A displacement component for driving the two sets of movable grounding structures 3 to move relative to each other is arranged on the base 1. A positioning component for positioning the insulating rod 4 is arranged on each set of movable grounding structures 3. A withstand voltage test equipment wiring terminal 5 is arranged at the top of the fixed insulating support structure 2. The positioning component on each set of movable grounding structures 3 includes a grounding housing 6. A ground wire connecting piece 13 is arranged at the lower end of the grounding housing 6. The grounding housing 6 is connected with a grounding electrode through the ground wire connecting piece 13.

[0042] Furthermore, the displacement component includes a bidirectional screw 7 rotatably connected to the base 1, two insulating sliders 701 threadedly connected to the bidirectional screw 7 and slidably connected inside the base 1, and a driving motor 702 arranged on the base 1 and used to drive the bidirectional screw 7 to rotate. The two insulating sliders 701 are respectively connected to the two sets of movable grounding structures 3 in a one-to-one correspondence.

[0043] Furthermore, the fixed insulation support structure 2 includes an insulation bracket 201 fixedly connected to the base 1 and an arc-shaped cross arm 202 arranged at the top of the insulation bracket 201. The wiring terminal 5 of the withstand voltage test equipment is arranged at the front end of the arc-shaped cross arm 202, and the arc-shaped cross arm 202 is electrically connected to the wiring terminal 5 of the withstand voltage test equipment.

[0044] Furthermore, the movable grounding structure 3 includes a moving plate 301 connected to the insulation slider 701 and a grounding bracket 302 arranged on the moving plate 301. The grounding shell 6 is fixedly arranged on the top of the grounding bracket 302.

[0045] Furthermore, the ground wire connecting member 13 includes a ground wire connecting bolt arranged on the grounding shell 6. One end of the ground wire is sleeved on the ground wire connecting bolt through an annular ground wire connecting sleeve. A compression nut is threadedly connected to the ground wire connecting bolt, and the other end of the ground wire is connected to the grounding electrode; the compression nut can ensure the reliable connection between the ground wire and the ground wire connecting member 13 to eliminate safety risks.

[0046] Specifically, when performing the withstand voltage test on the insulating rod 4, the insulating rod 4 is placed on the arc-shaped cross arm 202. Subsequently, the driving motor 702 is controlled to operate. The output shaft of the driving motor 702 drives the bidirectional screw 7 to rotate. The insulating sliders 701 on both sides of the bidirectional screw 7 approach each other. The insulating sliders 701 drive the movable grounding structures 3 on both sides to approach each other, so that the movable grounding structures 3 on both sides are respectively abutted against the two ends of the insulating rod 4. The distance between each movable grounding structure 3 and the fixed insulation support structure 2 is half of the length of the insulating rod 4 to be tested. During this period, the positioning components at the ends of the movable grounding structures 3 automatically clamp and fix the ends of the insulating rod 4. The ground wire connecting member 13 and the wiring terminal 5 of the withstand voltage test equipment are respectively connected to the ground wire and the high-voltage test wire of the withstand voltage test equipment. The withstand voltage test equipment is used to check the withstand voltage equipment of the insulating rod 4, realizing the segmented horizontal detection of the insulating rod 4.

[0047] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , as a preferred technical solution of the present invention, the positioning component includes a first elastic telescopic rod 601 and a second elastic telescopic rod 602 fixedly arranged in the grounding shell 6. One end of the first elastic telescopic rod 601 away from the inner wall of the grounding shell 6 is connected to a lower clamping seat 603 that slides horizontally in the grounding shell 6. One end of the second elastic telescopic rod 602 away from the inner wall of the grounding shell 6 is connected to an upper clamping seat 604 that slides vertically in the grounding shell 6.

[0048] Furthermore, a wedge-shaped block 8 is fixedly arranged on the lower clamping seat 603, and a force-receiving block 9 that is movably abutted against the wedge-shaped block 8 is fixedly arranged on the upper clamping seat 604. An activity groove 901 for the movement of the wedge-shaped block 8 is opened on the force-receiving block 9.

[0049] Specifically, after the insulating rod 4 to be detected is placed on the arc-shaped cross arm 202, the displacement assembly drives the two mobile grounding structures 3 on both sides to approach each other. The two mobile grounding structures 3 simultaneously abut against the end of the insulating rod 4, or one of the mobile grounding structures 3 abuts against one end of the insulating rod 4 first. When one of the mobile grounding structures 3 abuts against one end of the insulating rod 4 first, the mobile grounding structure 3 in contact with the insulating rod 4 pushes the insulating rod 4 to slide on the arc-shaped cross arm 202 through the positioning assembly. After the other end of the insulating rod 4 abuts against the mobile grounding structure 3 on the other side, the lower clamping seats 603 of the positioning assemblies on the upper sides of the two mobile grounding structures 3 are simultaneously stressed. When the displacement assembly still drives the grounding housing 6 to move towards the fixed insulating support structure 2, the lower clamping seat 603 cannot continue to move, the first elastic telescopic rod 601 is compressed, and the force-bearing block 9 moves relative to the wedge-shaped block 8, causing the force-bearing block 9 to drive the upper clamping seat 604 to move downward. The upper clamping seat 604 cooperates with the lower clamping seat 603 to clamp and position the end of the insulating rod 4, so as to realize the automatic positioning of the insulating rod 4 while adjusting the distance between the two mobile grounding structures 3 and the fixed insulating support structure 2. The operation is simple and convenient, which is conducive to improving the detection efficiency.

[0050] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As a preferred technical solution of the present invention, a connecting rod 902 is fixedly provided on the force-bearing block 9. One end of the connecting rod 902 away from the force-bearing block 9 is connected to a lifting plate 10. An auxiliary support seat 1001 is fixedly provided on the lifting plate 10. The height of the bottom inner wall of the auxiliary support seat 1001 is the same as the height of the bottom inner wall of the arc-shaped cross arm 202.

[0051] Furthermore, the heights of multiple inspection parts on the base 1 decrease sequentially from back to front. The base 1 is connected by a connecting plate to a storage box 11 for placing the insulating rod 4. The height of the front end of the bottom opening of the storage box 11 is higher than the height of the rear end. A material guiding inclined plate 12 is fixedly provided on the side of the auxiliary support seat 1001.

[0052] Specifically, when multiple insulating rods 4 need to be detected, the multiple insulating rods 4 to be detected are placed in the storage bin 11. The insulating rods 4 automatically fall under their own gravity. The insulating rod 4 at the bottom of the storage bin 11 first falls on the arc-shaped cross arm 202 and the auxiliary support base 1001 directly below. Subsequently, the other insulating rods 4 slide down on the top of the insulating rods 4 that have already fallen and placed, and slide down along the guide chute 12 to the arc-shaped cross arm 202 of the next inspection part, realizing the rapid lowering of the multiple insulating rods 4 to be detected. The operation is simple and fast, improving the inspection efficiency. The setting of the auxiliary support base 1001 facilitates the insulating rod 4 to fall obliquely relative to one end of the arc-shaped cross arm 202 when falling. After the positioning component clamps the end of the insulating rod 4, the downward-moving upper clamp seat 604 drives the moving plate 301 to move downward through the connecting rod 902, and then the moving plate 301 drives the auxiliary support base 1001 to move downward, avoiding the contact between the auxiliary support base 1001 and the insulating rod 4 during the withstand voltage test detection and improving the accuracy of the inspection results.

[0053] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An insulation rod batch withstand voltage detection method, characterized in that It includes the following steps: S1: When performing the withstand voltage test on the insulating rod (4), place multiple insulating rods (4) in different detection positions of the test equipment in sequence; S2: Each detection position of the test equipment clamps and positions the insulating rod (4) that matches it; S3: Connect the ground wire of the test equipment and the high-voltage test wire of the withstand voltage test equipment; S4: Use the withstand voltage test equipment to check the withstand voltage equipment of the insulating rod (4) to achieve segmented lateral detection of the insulating rod (4).

2. The method for batch withstand voltage detection of an insulating rod according to claim 1, characterized in that, The test equipment includes a base (1) and multiple groups of test parts arranged on the base (1). Each group of the test parts includes a fixed insulating support structure (2) and two groups of mobile grounding structures (3) with the same structure. A displacement component for driving the relative movement of the two groups of mobile grounding structures (3) is arranged on the base (1). A positioning component for positioning the insulating rod (4) is arranged on each group of the mobile grounding structures (3). A withstand voltage test equipment wiring terminal (5) is arranged at the top of the fixed insulating support structure (2). The positioning component on each group of the mobile grounding structures (3) includes a grounding housing (6). A ground wire connecting piece (13) is arranged at the lower end of the grounding housing (6). The grounding housing (6) is connected with a grounding electrode through the ground wire connecting piece (13).

3. A method for batch withstand voltage detection of an insulating rod according to claim 2, characterized in that, The displacement component includes a bidirectional screw rod (7) rotatably connected to the base (1), two insulating sliders (701) threadedly connected to the bidirectional screw rod (7) and slidably connected inside the base (1), and a driving motor (702) arranged on the base (1) and used for driving the rotation of the bidirectional screw rod (7). The two insulating sliders (701) are respectively connected to the two groups of mobile grounding structures (3) in a one-to-one correspondence.

4. A method for batch withstand voltage detection of an insulating rod according to claim 3, characterized in that, The fixed insulating support structure (2) includes an insulating bracket (201) fixedly connected to the base (1) and an arc-shaped cross arm (202) arranged at the top of the insulating bracket (201). The withstand voltage test equipment wiring terminal (5) is arranged at the front end of the arc-shaped cross arm (202). The arc-shaped cross arm (202) is electrically connected to the withstand voltage test equipment wiring terminal (5).

5. A method for batch withstand voltage detection of an insulating rod according to claim 3, characterized in that, The mobile grounding structure (3) includes a moving plate (301) connected to the insulating slider (701) and a grounding bracket (302) arranged on the moving plate (301). The grounding housing (6) is fixedly arranged at the top of the grounding bracket (302).

6. The method for batch withstand voltage detection of an insulating rod according to claim 5, characterized in that, The positioning component includes a first elastic telescopic rod (601) and a second elastic telescopic rod (602) fixedly arranged inside the grounding housing (6). One end of the first elastic telescopic rod (601) far from the inner wall of the grounding housing (6) is connected with a lower clamping seat (603) sliding horizontally inside the grounding housing (6). One end of the second elastic telescopic rod (602) far from the inner wall of the grounding housing (6) is connected with an upper clamping seat (604) sliding vertically inside the grounding housing (6).

7. A method for batch withstand voltage detection of an insulating rod according to claim 6, characterized in that, A wedge block (8) is fixedly arranged on the lower clamping seat (603). A force-receiving block (9) fixedly arranged on the upper clamping seat (604) is movably abutted against the wedge block (8). An activity groove (901) for the movement of the wedge block (8) is arranged on the force-receiving block (9).

8. A method for batch withstand voltage detection of an insulating rod according to claim 7, characterized in that, A connecting rod (902) is fixedly provided on the force-bearing block (9). One end of the connecting rod (902) far from the force-bearing block (9) is connected to a lifting plate (10). An auxiliary support base (1001) is fixedly provided on the lifting plate (10). The height of the bottom inner wall of the auxiliary support base (1001) is the same as the height of the bottom inner wall of the arc-shaped cross arm (202).

9. A method for batch withstand voltage detection of an insulating rod according to claim 8, characterized in that, The heights of multiple inspection parts on the base (1) decrease sequentially from the rear to the front. The base (1) is connected with a storage box (11) for placing an insulating rod (4) through a connecting plate. The height of the front end of the bottom opening of the storage box (11) is higher than that of the rear end. A material guiding inclined plate (12) is fixedly provided on the side of the auxiliary support base (1001).

10. A method for batch withstand voltage detection of an insulating rod according to claim 2, characterized in that, The ground wire connector (13) includes a ground wire connecting bolt provided on the grounding housing (6). One end of the ground wire is sleeved on the ground wire connecting bolt through an annular ground wire connecting sleeve. A compression nut is threadedly connected to the ground wire connecting bolt. The other end of the ground wire is connected to a grounding electrode.

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