A testing device for surge arrester processing

Abstract

This invention discloses a testing device for surge arrester manufacturing, relating to the field of surge arrester testing technology. It includes a testing platform, a base fixedly connected to the upper surface of the platform's axis, and two sets of supports fixedly connected to the front and rear sides of the base. The base contains a stabilizing mechanism for fixing the bottom position of the surge arrester and a temperature regulating device simulating the actual test environment temperature. This testing device for surge arrester manufacturing, through its mounting mechanism, temperature regulating device, voltage simulation device, and positioning mechanism, can simulate the actual operating conditions of a surge arrester. Multiple temperature sensors are distributed along the axial and radial directions of the surge arrester to test temperature changes at different locations, enabling the detection of potential faults such as localized overheating, improving the authenticity and reliability of test results. It can also fix different types of surge arresters, improving the stability of the surge arrester during testing and enhancing the accuracy of test data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning arrester testing, and particularly relates to a testing device for lightning arrester processing. BACKGROUND

[0002] In a power system, a lightning arrester is used to protect electrical equipment from high transient overvoltage and limit the current flow time. The lightning arrester needs to be tested in the production and processing process to ensure the overall quality and performance of the lightning arrester, including thermal performance. The thermal performance is crucial to the operation reliability of the lightning arrester. Most existing testing devices use traditional single-point temperature measurement, which cannot comprehensively reflect the temperature distribution inside the lightning arrester, is prone to miss local overheating hazards, and is difficult to simulate complex and variable actual operating environments, resulting in deviations between the test results and actual working conditions. In addition, different models of lightning arresters have different sizes, which can easily affect the stability of the lightning arrester during testing, thereby affecting the accuracy of the lightning arrester test data. SUMMARY

[0003] The main purpose of the present application is to provide a testing device for lightning arrester processing, which can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: A testing device for lightning arrester processing, comprising a testing platform, a base fixedly connected to the upper surface of the axis of the testing platform, and two groups of supports fixedly connected to the front and rear sides of the base, wherein the inside of the base is provided with a stabilizing mechanism for fixing the bottom end position of the lightning arrester and a temperature adjusting device for simulating the temperature of the live testing environment, the upper surface of the base is provided with a positioning mechanism for fixing lightning arresters of different thicknesses above the stabilizing mechanism, the upper surface of the base is provided with a fixed cover plate, the outer side of the fixed cover plate is detachably connected with a support rod, the support rod is symmetrically provided with four groups, a positioning hole is formed in the axis of the upper surface of the fixed cover plate, and a closed shell is detachably connected between the fixed cover plate and the base, wherein the inside of the closed shell is provided with a mounting mechanism for distributing a plurality of temperature sensors in the axial and radial directions of the lightning arrester between the fixed cover plate and the base, and the right side of the base is provided with a voltage simulation device for simulating direct current voltage, alternating current voltage and impulse voltage on the upper surface of the testing platform.

[0005] Preferably, the inside of the mounting mechanism is provided with an infrared temperature sensor for testing the temperature of the lightning arrester, the infrared temperature sensor is provided with a plurality of infrared temperature sensors, the wire tail end of the infrared temperature sensor extends to the outside of the base, and the end is provided with a conversion device for recording and analyzing and processing the test data of the infrared temperature sensor on the upper surface of the base.

[0006] Preferably, the mounting mechanism includes multiple rings disposed on the upper surface of the base, and a slot is formed on the inner surface of the ring. The probe of the infrared temperature sensor is detachably connected to the slot. Movable mechanisms for connecting multiple rings are provided on the outer surface of the rings on the left and right sides of the base, and two sets of movable mechanisms are symmetrically arranged.

[0007] Preferably, the movable mechanism includes a support plate fixedly connected to the outer surface of the ring, a limiting groove is formed on the bottom front part of the support plate, a traction rope is provided on the upper surface of the base below the support plate, the first end of the traction rope passes through the support plate and the end is detachably connected to the bottom surface of the fixed cover plate, and a ball is fixedly connected to the outer surface of the traction rope inside the limiting groove.

[0008] Preferably, a slot is formed inside the base below the support plate, and a reel is provided inside the slot. The end of the traction rope passes through the upper surface of the base and is wrapped around the outer side of the reel. The support rod is a multi-stage telescopic rod, and a cylinder is provided inside the telescopic rod. Multiple fixing brackets are fixedly connected to the surface of the closed shell.

[0009] Preferably, a plurality of retaining rings are fixedly connected to the inner side of the ring, and a second groove is provided on the left side of the base at the connection between the support plate and the ring, and a guide wheel is rotatably connected inside the second groove on the inner side of the support plate.

[0010] Preferably, the stabilizing mechanism includes a cavity formed inside the base, a fixed block fixedly connected to the bottom surface of the cavity, a movable block slidably connected to the left side of the fixed block inside the cavity, mounting grooves being formed at the bottom of both the movable block and the fixed block, a screw threadedly connected inside the mounting groove, a push plate fixedly connected to the left side of the movable block on the outer side of the screw, one end of the screw threadedly connected to the mounting groove on the fixed block, and the other end of the screw passing through the movable block and the base and fixedly connected to a rotating block at the end.

[0011] Preferably, the positioning mechanism includes an arc-shaped block slidably connected to the top surface of the cavity, and four sets of arc-shaped blocks are symmetrically arranged. A semi-arc groove is opened on the outer side of the arc-shaped block, and a ring spring is sleeved on the outer side of the four sets of arc-shaped plates inside the semi-arc groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, through the installation mechanism, temperature regulation equipment and voltage simulation equipment, the coordinated operation of the temperature regulation equipment and voltage simulation equipment can simulate various temperature and voltage conditions that the surge arrester may encounter in actual operation. At the same time, the installation mechanism distributes multiple temperature sensors in the axial and radial directions of the surge arrester to test the temperature changes at different locations of the surge arrester, which can detect potential fault hazards such as local overheating, and make the test results more realistic and reliable.

[0013] 2. In this invention, the installation and positioning mechanisms enable the fixing and testing of surge arresters of different lengths and thicknesses, thereby improving the stability of the surge arresters during the testing process and the accuracy of the surge arrester test data. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the testing device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the testing device of the present invention; Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 yes Figure 2 Enlarged view of a section at point B in the middle; Figure 5 This is a schematic diagram of the base structure of the present invention; Figure 6 This is a schematic diagram of the installation mechanism of the present invention; Figure 7 yes Figure 2 Enlarged view of a section at point C; Figure 8 This is a schematic diagram of the internal structure of the ring of the present invention; Figure 9 This is a schematic diagram of the support plate structure of the present invention.

[0015] In the picture: 1. Test platform; 11. Base; 12. Bracket; 2. Stabilizing mechanism; 21. Cavity; 22. Fixed block; 23. Movable block; 24. Mounting slot; 25. Screw; 26. Push plate; 27. Rotating block; 3. Positioning mechanism; 31. Arc block; 32. Semi-arc groove; 33. Ring spring; 4. Fixed cover plate; 41. Support rod; 42. Positioning hole; 5. Enclosed shell; 51. Fixed frame; 6. Mounting mechanism; 61. Ring; 62. Slot; 7. Movable mechanism; 71. Support plate; 72. Limiting groove; 73. Traction rope; 74. Ball; 8. Slot No. 1; 81. Winding wheel; 82. Snap ring; 83. Slot No. 2; 84. Guide wheel; 9. Voltage simulation equipment; 91. Infrared temperature sensor; 92. Conversion equipment. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] A testing device for surge arrester manufacturing includes a testing platform 1, a base 11 fixedly connected to the upper surface of the test platform 1's axis, and two sets of brackets 12 fixedly connected to the front and rear sides of the base 11. The base 11 contains a stabilizing mechanism 2 for fixing the bottom position of the surge arrester and a temperature regulating device simulating the actual test environment temperature. Above the stabilizing mechanism 2, on the top surface of the base 11, is a positioning mechanism 3 for fixing surge arresters of different thicknesses. A fixed cover plate 4 is located above the base 11. Support rods 41 are detachably connected to the outer side of the fixed cover plate 4, and four sets of support rods 41 are symmetrically arranged. A positioning hole 42 is opened at the axis of the upper surface of the fixed cover plate 4. A closed shell 5 is detachably connected between the fixed cover plate 4 and the base 11. Inside the closed shell 5, between the fixed cover plate 4 and the base 11, is an installation mechanism 6 for distributing multiple temperature sensors around the surge arrester. On the right side of the base 11, on the upper surface of the test platform 1, is a voltage simulation device 9 for simulating DC voltage, AC voltage, and impulse voltage.

[0018] like Figures 1-2 As shown, the base 11 is fixedly connected to the axis of the test platform 1, and two sets of brackets 12 are symmetrically arranged on the front and rear sides of the base 11. One end of the bracket 12 is fixedly connected to the outer side of the base 11, and the other end of the bracket 12 is fixedly connected to the upper surface of the test platform 1. A fixed cover plate 4 is provided above the base 11. The fixed cover plate 4 consists of a fixed frame and a cover plate. The cover plate is detachably connected to the fixed frame. Four sets of support rods 41 are symmetrically distributed on the outer side of the fixed frame. The top of the support rod 41 is detachably connected to the outer side of the fixed frame, and the bottom of the support rod 41 is fixedly connected to the upper surface of the test platform 1. A closed shell 5 is detachably connected between the fixed cover plate 4 and the base 11. The three structures of the closed shell 5, the fixed cover plate 4, and the base 11 surround each other to form a test space. The base 11, the closed shell 5, and the fixed cover plate 4 are made of heat insulation material, such as polyurethane heat insulation material, which can reduce the interference of the external ambient temperature on the temperature inside the test space.

[0019] A temperature regulation device is installed inside the base 11. The temperature regulation device includes a heating component and a cooling component. The heating component consists of multiple heating wires, which are evenly distributed on the inner wall of the enclosed shell 5. The temperature inside the test space is adjusted by controlling the current of the heating wires. At the same time, the cooling component uses a semiconductor cooling chip, which is installed on the base 11 and the fixed cover plate 4 to reduce the temperature inside the test space. In addition, a circulating fan is also provided inside the base 11 to promote air circulation in the test space and facilitate a more uniform temperature distribution. Therefore, the temperature regulation device simulates the ambient temperature of the surge arrester in real-world conditions.

[0020] like Figure 2 He Ru Figures 6-9As shown, the mounting mechanism 6 can distribute multiple temperature sensors along the axial and radial directions of the surge arrester to test temperature changes at different locations of the surge arrester. The mounting mechanism 6 includes a ring 61 set on the upper surface of the base 11. The movable mechanism 7 distributes multiple rings 61 vertically inside the test space. The multiple rings 61 are evenly distributed. The slot 62 is opened on the inner surface of the ring 61 and is annular. The temperature sensor can be an infrared temperature sensor 91. The probes of multiple infrared temperature sensors 91 are evenly and detachably connected to the inside of the slot 62. The wires of the infrared temperature sensors 91 pass through small holes in the slot 62 and are laid along the inside of the ring 61. The tail of the wire of each infrared temperature sensor 91 passes through the base 11 and extends to the outside. The end of the tail is electrically connected to the conversion device 92. The conversion device 92 can record and analyze the data tested by the infrared temperature sensors 91 and can transmit the collected data to the control device through the data transmission line. like Figure 2 As shown, the movable mechanism 7 is arranged on the left and right sides of the base 11 and there are two sets of them symmetrically. The movable mechanism 7 includes a support plate 71 fixedly connected to the outer surface of the ring 61. The front part of the support plate 71 is provided with a limiting groove 72 and a traction rope 73. The limiting groove 72 is opened on the bottom front part of the support plate 71. The traction rope 73 passes through multiple limiting grooves 72. A ball 74 is fixedly connected to the surface of the traction rope 73 inside the limiting groove 72. The ball 74 contacts the inside of the limiting groove 72, so that the traction rope 73 supports the ring 61 in the test space through the support plate 71, thereby realizing that multiple rings 61 are arranged vertically. like Figures 2-3 As shown, the support rod 41 can actually be set as a multi-stage telescopic rod, with a cylinder inside the telescopic rod to control the increase or decrease in height. The enclosed shell 5 is made of polyurethane rubber, giving it extensibility. Multiple fixing brackets 51 are evenly distributed on the surface of the enclosed shell 5 to maintain its shape and improve the stability of the test space. Heating wires can also be placed inside the fixing brackets 51. Meanwhile, a slot 8 is formed inside the base 11 below the support plate 71. A winding wheel 81 is installed inside the slot 8, with protrusions on both the front and rear sides of the winding wheel 81. The wheel 81 is fixedly connected to the inside of the base 11 by a protrusion, and the end of the traction rope 73 passes through the upper surface of the base 11 and is wound around the outer surface of the wheel 81. A torsion spring is provided at the axis of the wheel 81, which enables the wheel 81 to wind up the traction rope 73. When stationary, multiple rings 61 are vertically overlapping. When the fixed cover plate 4 is pulled upward, the rings 61 are moved by the traction rope 73 and the support plate 71, so that a gap appears between adjacent rings 61. The vertical lengths of the closed shell 5 and the support rod 41 also change, which is convenient for testing surge arresters of different lengths.

[0021] like Figure 3As shown, a drive wheel is provided at the connection point between the wire of the infrared temperature sensor 91 and the base 11, and a winding and unwinding mechanism is provided on the outside of the test platform 1. When multiple rings 61 are close together, the winding and unwinding mechanism can winding up the wire of the infrared temperature sensor 91. When multiple rings 61 are far apart, the winding and unwinding mechanism can unwind the wire of the infrared temperature sensor 91, thereby avoiding damage to the infrared temperature sensor 91. like Figures 7-9 As shown, a second groove 83 is provided on the left side of the base 11 at the connection between the support plate 71 and the ring 61. The second groove 83 is opened on the ring 61. Inside the second groove 83, a guide wheel 84 is rotatably connected to the inside of the support plate 71. The guide wheel 84 is used to guide the bending of the wire of the infrared temperature sensor 91, so as to facilitate the movement of the wire of the infrared temperature sensor 91 inside the slot 62. like Figures 6-9 As shown, multiple retaining rings 82 are evenly arranged on the inner surface of the ring 61 to fix the wires of the infrared temperature sensor 91 inside the retaining groove 62.

[0022] like Figure 5 As shown, the stabilizing mechanism 2 includes a cavity 21 formed inside the base 11. A fixed block 22 and a movable block 23 are provided on the bottom surface of the cavity 21. Both the movable block 23 and the fixed block 22 have mounting grooves 24 on their bottoms. One end of a screw 25 passes through the base 11 and extends to the outside, and a rotating block 27 is fixedly connected to this end. The other end of the screw 25 passes through the mounting groove 24 of the movable block 23 and extends into the mounting groove 24 of the fixed block 22. The movable block 23 is slidably connected inside the cavity 21. The bottom surface of the fixed block 22... The movable block 23 is fixedly connected to the bottom surface of the cavity 21. A push plate 26 is fixedly connected to the left side of the screw 25 on the outer side of the movable block 23. The push plate 26 is located inside the cavity 21. When the surge arrester is inserted into the base 11, the rotating block 27 is rotated, causing the screw 25 to rotate and move towards the right side of the base 11. At the same time, the push plate 26 pushes the movable block 23 to move, thereby reducing the distance between the movable block 23 and the fixed block 22. This allows the top of the movable block 23 and the top of the fixed block 22 to clamp the terminals at the bottom of the surge arrester.

[0023] like Figure 2 and Figure 5 As shown, the positioning mechanism 3 includes an arc-shaped block 31 slidably connected to the top surface of the cavity 21. Four sets of arc-shaped blocks 31 are symmetrically arranged, and the four sets of arc-shaped blocks 31 are evenly arranged around the axis of the base 11. The outer side of the arc-shaped block 31 is provided with a semi-arc groove 32. The outer side of the four sets of arc-shaped plates is fitted with a ring spring 33 inside the semi-arc groove 32. When the surge arrester is inserted into the base 11, the bottom of the surge arrester pushes the four sets of arc-shaped blocks 31 to expand outward. The ring spring 33 is elastic and has the effect of converging the four sets of arc-shaped plates towards the axis of the base 11, so that the inner side of the arc-shaped plates can fix the bottom of the surge arrester. It can also be used for surge arresters of different thicknesses. like Figures 2-4 As shown, a positioning hole 42 is provided at the center of the upper surface of the fixed cover plate 4. The positioning hole 42 is fitted with the terminal at the top of the surge arrester. The positioning hole 42 can be circular or rectangular, etc., so as to further stabilize the surge arrester inside the test space and improve the accuracy of the test data.

[0024] like Figure 1 As shown, a voltage simulation device 9 is installed on the upper surface of the test platform 1 on the right side of the base 11. This device includes an AC voltage generator, a DC voltage generator, and an impulse voltage generator. The AC voltage generator and the DC voltage generator are used to simulate the power frequency voltage and DC voltage during normal operation. The impulse voltage generator can generate lightning impulse voltage and switching impulse voltage. Therefore, by switching different voltage generators and cooperating with the voltage regulating device, various types and amplitudes of voltage can be provided to the surge arrester to simulate various overvoltage conditions in actual operation. The positioning hole 42 is equipped with a terminal receiver, which fits into the top terminal of the surge arrester. Similarly, the top inner sides of the movable block 23 and the fixed block 22 are also equipped with terminal receivers, which fit into the bottom terminal of the surge arrester. The terminal receivers at both locations are connected to the voltage simulation device 9 via wires to simulate various overvoltage conditions.

[0025] It should be noted that the testing device is equipped with a matching control device. The control device can be remotely connected to the temperature regulation device, voltage simulation device 9, infrared temperature sensor 91, and conversion device 92. The control device is set on a computer or tablet computer. The operator can input test parameters, such as test voltage type, amplitude, test time, and target temperature, through the touch screen. At the same time, the control device automatically controls the operation of the temperature regulation device and voltage simulation device 9 according to the preset parameters, and receives the data collected by the conversion device 92 in real time. It analyzes and processes the data and displays the temperature change curve and voltage waveform during the test on the display screen. When an abnormal temperature or other fault is detected, the control device will immediately issue an alarm signal and stop the test.

[0026] It should be noted that this invention is a testing device for surge arrester manufacturing, such as... Figures 1-9As shown, during use, the surge arrester to be tested is inserted into the base 11. The rotating block 27 is rotated so that the top of the movable block 23 and the top of the fixed block 22 clamp the terminals at the bottom of the surge arrester. At the same time, the four sets of arc-shaped blocks 31 fix the bottom of the surge arrester under the action of the ring spring 33. Then, the fixed frame is pulled upward so that the ring 61 drives the probe of the infrared temperature sensor 91 to be distributed axially and radially on the surge arrester. Then, the cover plate is closed and the terminals at the top of the surge arrester are located in the positioning hole 42. Then, the test parameters are set through the touch screen. According to the preset parameters and rules, the control equipment controls the operation of the temperature adjustment equipment and the voltage simulation equipment 9. At the same time, the test process is monitored and managed. When an abnormal situation occurs, corresponding measures are taken in time to ensure the safety of the test process and the accuracy of the data.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for lightning arrester manufacturing, comprising a testing platform (1), a base (11) fixedly connected to the upper surface of the test platform (1) axis, and two sets of supports (12) fixedly connected to the front and rear sides of the base (11), characterized in that: The base (11) is equipped with a stabilizing mechanism (2) for fixing the bottom position of the surge arrester and a temperature regulating device for simulating the actual test environment temperature. Above the stabilizing mechanism (2), a positioning mechanism (3) for fixing surge arresters of different thicknesses is provided on the top surface of the base (11). A fixed cover plate (4) is provided on the top of the base (11). A support rod (41) is detachably connected to the outer side of the fixed cover plate (4). Four sets of support rods (41) are symmetrically arranged. A positioning hole (42) is provided at the center of the upper surface of the fixed cover plate (4). A closed shell (5) is detachably connected between the fixed cover plate (4) and the base (11). Inside the closed shell (5), between the fixed cover plate (4) and the base (11), an installation mechanism (6) is provided for distributing multiple temperature sensors on the axial and radial sides of the surge arrester. On the right side of the base (11), a voltage simulation device (9) for simulating DC voltage, AC voltage and impulse voltage is provided on the upper surface of the test platform (1).

2. The testing device for surge arrester manufacturing according to claim 1, characterized in that: The installation mechanism (6) is equipped with an infrared temperature sensor (91) for testing the temperature of the surge arrester. Multiple infrared temperature sensors (91) are provided. The end of the wire of the infrared temperature sensor (91) extends to the outside of the base (11), and the end is provided with a conversion device (92) on the upper surface of the base (11) for recording and analyzing the test data of the infrared temperature sensor (91).

3. The testing device for surge arrester manufacturing according to claim 2, characterized in that: The mounting mechanism (6) includes a ring (61) disposed on the upper surface of the base (11). Multiple rings (61) are provided. A slot (62) is provided on the inner surface of the ring (61). The probe of the infrared temperature sensor (91) is detachably connected to the slot (62). Movable mechanisms (7) for connecting multiple rings (61) are provided on the outer surface of the rings (61) on both sides of the base (11). Two sets of movable mechanisms (7) are symmetrically arranged.

4. The testing device for surge arrester manufacturing according to claim 3, characterized in that: The active mechanism (7) includes a support plate (71) fixedly connected to the outer surface of the ring (61). A limiting groove (72) is provided on the bottom front of the support plate (71). A traction rope (73) is provided on the upper surface of the base (11) below the support plate (71). The first end of the traction rope (73) passes through the support plate (71) and the end is detachably connected to the bottom surface of the fixed cover plate (4). A ball (74) is fixedly connected inside the limiting groove (72) on the outer surface of the traction rope (73).

5. A testing device for surge arrester manufacturing according to claim 4, characterized in that: The support plate (71) has a slot (8) inside the base (11) below it. A reel (81) is installed inside the slot (8). The end of the traction rope (73) passes through the upper surface of the base (11) and is wrapped around the outer side of the reel (81). The support rod (41) is a multi-stage telescopic rod. A cylinder is installed inside the telescopic rod. Multiple fixing brackets (51) are fixedly connected to the surface of the closed shell (5).

6. The testing device for surge arrester manufacturing according to claim 5, characterized in that: Multiple retaining rings (82) are fixedly connected to the inner side of the ring (61). A second groove (83) is provided on the left side of the base (11) at the connection between the support plate (71) and the ring (61). A guide wheel (84) is rotatably connected inside the second groove (83) on the inner side of the support plate (71).

7. The testing device for surge arrester manufacturing according to claim 1, characterized in that: The stabilizing mechanism (2) includes a cavity (21) opened inside the base (11). A fixed block (22) is fixedly connected to the bottom surface of the cavity (21). A movable block (23) is slidably connected to the left side of the fixed block (22) inside the cavity (21). An installation groove (24) is opened at the bottom of both the movable block (23) and the fixed block (22). A screw (25) is threadedly connected inside the installation groove (24). A push plate (26) is fixedly connected to the left side of the movable block (23) on the outer side of the screw (25). One end of the screw (25) is threadedly connected to the installation groove (24) on the fixed block (22). The other end of the screw (25) passes through the movable block (23) and the base (11) and is fixedly connected to a rotating block (27).

8. A testing device for surge arrester manufacturing according to claim 1, characterized in that: The positioning mechanism (3) includes an arc-shaped block (31) slidably connected to the top surface of the cavity (21). Four sets of arc-shaped blocks (31) are symmetrically arranged. A semi-arc groove (32) is opened on the outer side of the arc-shaped block (31). A ring spring (33) is sleeved inside the semi-arc groove (32) on the outer side of the four sets of arc-shaped plates.

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