A 35kV and above arrester test tool

Abstract

The utility model discloses a 35kV and above arrester test fixture, which belongs to the technical field of arrester test devices, and aims to solve the problem that the existing arrester test fixture can only complete the test of a single-size arrester and has a small scope of application. It includes a base, a fixed seat is arranged in front of the insulating support on the base, the output end of the double-axis cylinder arranged on both sides of the fixed seat is connected to the fixed clamp, a barcode scanning gun is installed on the rotating platform, a second connecting plate is installed on the top of the insulating support, the insulating support sleeve is provided with a shaft sleeve, a first connecting plate is installed on the shaft sleeve, the first connecting plate is connected to a pressure-equalizing ring through a pin shaft, a spiral compression spring is sleeved on the pin shaft, a mechanical control valve is installed on the top of the pressure-equalizing ring, a double-spiral telescopic air pipe is also installed between the first connecting plate and the second connecting plate, the telescopic lead pipe arranged on the first connecting plate is connected to a DC power supply, and a power assembly is installed on the base. The utility model is applicable to a 35kV and above arrester test fixture.

Description

Technical Field

[0001] The utility model belongs to the technical field of arrester testing devices, and in particular relates to a 35kV and above arrester testing tool. Background Art

[0002] Lightning arresters are used to protect power lines and electrical equipment in power systems from high transient overvoltages, operating overvoltages, and power frequency transient overvoltages during lightning strikes, and to limit the follow-on time and often the follow-on value. Lightning arresters are sometimes also called overvoltage protectors or overvoltage limiters. Lightning arresters are connected between cables and the earth, usually in parallel with the protected equipment, and can effectively protect electrical equipment. When electrical equipment is operating at normal operating voltage, the lightning arrester will not take effect and will be considered as an open circuit to the ground; when high voltage appears and endangers the insulation of the protected equipment, the lightning arrester will immediately operate to direct the high voltage impact current to the earth, thereby limiting the voltage amplitude and protecting power lines and equipment; when the overvoltage disappears, the lightning arrester quickly returns to its original state, allowing the electrical equipment to operate normally.

[0003] During the production process, the arrester needs to be tested with high voltage to check whether its quality is up to standard. The existing arrester test fixture has a relatively simple structure and can only test arresters of a single size, so its application scope is relatively small. Utility Model Content

[0004] The utility model aims to provide a 35kV and above arrester test tool to solve the problem that the existing arrester test tool can only complete the test of a single size arrester and has a small application range.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A 35kV and above lightning arrester test tool, comprising a base, two insulating pillars are arranged on the base, a fixed seat is arranged on the base in front of the insulating pillar, two-axis cylinders are arranged on both sides of the fixed seat, the output end of the double-axis cylinder is connected to a fixed clamping claw, a connecting column is arranged at the center of the fixed seat, a rotating platform is sleeved on the connecting column, a barcode scanning gun is installed on the rotating platform, a second connecting plate is installed on the top of the insulating pillar, a shaft sleeve is sleeved on the insulating pillar below the second connecting plate, a first connecting plate is installed on the shaft sleeve, and the first connecting The plate is connected to a pressure-equalizing ring through a pin shaft, a spiral compression spring is sleeved on the pin shaft, a mechanically controlled valve is installed on the top of the pressure-equalizing ring, a double-helix telescopic air pipe is also installed between the first connecting plate and the second connecting plate, one end of the double-helix telescopic air pipe is connected to the air inlet end of the mechanically controlled valve, and the other end of the double-helix telescopic air pipe is connected to an air source, a telescopic lead tube is arranged on the first connecting plate above the pressure-equalizing ring, the telescopic lead tube passes through the second connecting plate and is connected to a DC power supply, and a power component for driving the first connecting plate to move up and down along the height direction of the insulating pillar is also installed on the base.

[0007] Furthermore, the power assembly includes a servo motor arranged on the base, the output end of the servo motor is transmission-connected to a lower pulley, an upper pulley is arranged on the lower surface of the second connecting plate between two insulating pillars, belts are sleeved on the upper pulley and the lower pulley, a movable plate is installed on the belt, and the movable plate is connected to the first connecting plate through a cross plate.

[0008] Furthermore, a reduction motor is installed in the base, and a driving end of the reduction motor is transmission-connected to the rotating platform.

[0009] Furthermore, the telescopic lead tube is an aluminum foil tube.

[0010] Furthermore, the material of the pressure equalizing ring is rust-proof aluminum plate.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. In the utility model, after the arrester to be tested is placed on the fixed seat, the reduction motor drives the rotating platform to rotate so that the barcode scanner on the rotating platform scans the QR code at the bottom of the arrester, which is convenient for recording the arrester test information. The dual-axis cylinder controls the fixed clamp to fix the arrester to prevent the arrester from tipping over during the test. The servo motor of the power assembly drives the lower pulley to rotate, and the lower pulley cooperates with the upper pulley to drive the movable plate on the belt to rise and fall. The movable plate is connected to the first connecting plate through the cross plate, so that the first connecting plate is synchronously lifted and lowered along the height direction of the insulating support, and then drives the equalizing ring to rise and fall, so as to test the arrester of different heights. The insulating support can isolate the 400kV DC high-voltage power supply while serving as the lifting guide mechanism of the equalizing ring, reducing or isolating the leakage current. The telescopic lead tube is used to connect with the DC power supply, introduce the high voltage of the DC power supply into the equalizing ring, and the telescopic lead tube can be adjusted to adjust the length when the equalizing ring rises and falls to ensure the normal operation of the equipment, and the telescopic lead tube made of aluminum foil can effectively reduce corona. The voltage-equalizing ring introduces high-voltage DC electricity into the upper flange end of the arrester to test the arrester. Since the voltage-equalizing ring is made of rust-proof aluminum plate, it can effectively improve the high-voltage electric field environment. A pin is provided on the upper part of the voltage-equalizing ring, and a spiral compression spring is sleeved on the pin, so that the contact between the voltage-equalizing ring and the arrester is soft contact during the test. While ensuring effective electrical contact between the voltage-equalizing ring and the upper flange end of the arrester during the test, it will not cause damage to the arrester. The double-helix telescopic air pipe provides an air source for the machine-controlled valve, and can be extended and retracted when the voltage-equalizing ring is raised or lowered so as to supply an air source to the machine-controlled valve without being affected by height changes. Through the above design, the test fixture can be applied to arresters of different sizes, which effectively solves the problem that the existing arrester test fixture can only complete the test of arresters of a single size and has a small scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work, including:

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure 3 It is a side view of the utility model;

[0017] Figure 4 This is an enlarged schematic diagram of point A of the utility model;

[0018] Markings in the figure: 1-base, 2-insulating support, 3-power assembly, 31-servo motor, 32-lower pulley, 33-upper pulley, 34-belt, 35-movable plate, 36-cross plate, 4-first connecting plate, 5-equalizing ring, 6-rotating platform, 7-dual-axis cylinder, 71-fixed clamp, 8-second connecting plate, 9-barcode scanning gun, 10-sleeve, 11-telescopic lead tube, 12-reduction motor, 13-double-helix telescopic air pipe, 14-pin shaft, 15-helical compression spring, 16-machine-controlled valve, 17-fixed seat, 171-connecting column. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only simplified descriptions for the convenience of describing the present utility model, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] A 35kV and above lightning arrester test tool, comprising a base, two insulating pillars are arranged on the base, a fixed seat is arranged on the base in front of the insulating pillar, two-axis cylinders are arranged on both sides of the fixed seat, the output end of the double-axis cylinder is connected to a fixed clamping claw, a connecting column is arranged at the center of the fixed seat, a rotating platform is sleeved on the connecting column, a barcode scanning gun is installed on the rotating platform, a second connecting plate is installed on the top of the insulating pillar, a shaft sleeve is sleeved on the insulating pillar below the second connecting plate, a first connecting plate is installed on the shaft sleeve, and the first connecting The plate is connected to a pressure-equalizing ring through a pin shaft, a spiral compression spring is sleeved on the pin shaft, a mechanically controlled valve is installed on the top of the pressure-equalizing ring, a double-helix telescopic air pipe is also installed between the first connecting plate and the second connecting plate, one end of the double-helix telescopic air pipe is connected to the air inlet end of the mechanically controlled valve, and the other end of the double-helix telescopic air pipe is connected to an air source, a telescopic lead tube is arranged on the first connecting plate above the pressure-equalizing ring, the telescopic lead tube passes through the second connecting plate and is connected to a DC power supply, and a power component for driving the first connecting plate to move up and down along the height direction of the insulating pillar is also installed on the base.

[0026] Furthermore, the power assembly includes a servo motor arranged on the base, the output end of the servo motor is transmission-connected to a lower pulley, an upper pulley is arranged on the lower surface of the second connecting plate between two insulating pillars, belts are sleeved on the upper pulley and the lower pulley, a movable plate is installed on the belt, and the movable plate is connected to the first connecting plate through a cross plate.

[0027] Furthermore, a reduction motor is installed in the base, and a driving end of the reduction motor is transmission-connected to the rotating platform.

[0028] Furthermore, the telescopic lead tube is an aluminum foil tube.

[0029] Furthermore, the material of the pressure equalizing ring is rust-proof aluminum plate.

[0030] During the implementation of the utility model, after the arrester to be tested is placed on the fixed seat, the reduction motor drives the rotating platform to rotate so that the barcode scanner on the rotating platform scans the QR code at the bottom of the arrester, which is convenient for recording the arrester test information. The dual-axis cylinder controls the fixed clamp to fix the arrester to prevent the arrester from tipping over during the test. The servo motor of the power assembly drives the lower pulley to rotate, and the lower pulley cooperates with the upper pulley to drive the movable plate on the belt to rise and fall. The movable plate is connected to the first connecting plate through the cross plate, so that the first connecting plate is synchronously lifted and lowered along the height direction of the insulating support, and then drives the equalizing ring to rise and fall, so as to test the arrester of different height sizes. The insulating support can isolate the 400kV DC high-voltage power supply while serving as the lifting guide mechanism of the equalizing ring, reducing or isolating the leakage current. The telescopic lead tube is used to connect with the DC power supply, introduce the high voltage electricity of the DC power supply into the equalizing ring, and the telescopic lead tube can be adjusted to adjust the length when the equalizing ring rises and falls, ensuring the normal operation of the equipment, and the telescopic lead tube made of aluminum foil can effectively reduce corona. The voltage-equalizing ring introduces high-voltage DC electricity into the upper flange end of the arrester to test the arrester. Since the voltage-equalizing ring is made of rust-proof aluminum plate, it can effectively improve the high-voltage electric field environment. A pin is provided on the upper part of the voltage-equalizing ring, and a spiral compression spring is sleeved on the pin, so that the contact between the voltage-equalizing ring and the arrester is soft contact during the test. While ensuring effective electrical contact between the voltage-equalizing ring and the upper flange end of the arrester during the test, it will not cause damage to the arrester. The double-helix telescopic air pipe provides an air source for the machine-controlled valve, and can be extended and retracted when the voltage-equalizing ring is raised or lowered so as to supply an air source to the machine-controlled valve without being affected by height changes. Through the above design, the test fixture can be applied to arresters of different sizes, which effectively solves the problem that the existing arrester test fixture can only complete the test of arresters of a single size and has a small scope of application.

[0031] Example 1

[0032] A 35kV and above lightning arrester test tool, comprising a base, two insulating pillars are arranged on the base, a fixed seat is arranged on the base in front of the insulating pillar, two-axis cylinders are arranged on both sides of the fixed seat, the output end of the double-axis cylinder is connected to a fixed clamping claw, a connecting column is arranged at the center of the fixed seat, a rotating platform is sleeved on the connecting column, a barcode scanning gun is installed on the rotating platform, a second connecting plate is installed on the top of the insulating pillar, a shaft sleeve is sleeved on the insulating pillar below the second connecting plate, a first connecting plate is installed on the shaft sleeve, and the first connecting The plate is connected to a pressure-equalizing ring through a pin shaft, a spiral compression spring is sleeved on the pin shaft, a mechanically controlled valve is installed on the top of the pressure-equalizing ring, a double-helix telescopic air pipe is also installed between the first connecting plate and the second connecting plate, one end of the double-helix telescopic air pipe is connected to the air inlet end of the mechanically controlled valve, and the other end of the double-helix telescopic air pipe is connected to an air source, a telescopic lead tube is arranged on the first connecting plate above the pressure-equalizing ring, the telescopic lead tube passes through the second connecting plate and is connected to a DC power supply, and a power component for driving the first connecting plate to move up and down along the height direction of the insulating pillar is also installed on the base.

[0033] Example 2

[0034] Based on Example 1, the power assembly includes a servo motor arranged on a base, the output end of the servo motor is transmission-connected to a lower pulley, an upper pulley is arranged on the lower surface of the second connecting plate between two insulating pillars, belts are sleeved on the upper pulley and the lower pulley, a movable plate is installed on the belt, and the movable plate is connected to the first connecting plate through a cross plate.

[0035] Example 3

[0036] On the basis of the above embodiment, a reduction motor is installed in the base, and the driving end of the reduction motor is transmission-connected to the rotating platform.

[0037] Example 4

[0038] Based on the above embodiment, the telescopic lead tube is an aluminum foil tube.

[0039] Example 5

[0040] On the basis of the above-mentioned embodiment, the material of the pressure equalizing ring is rust-proof aluminum plate.

[0041] The above is the embodiment of the utility model. The above is the preferred embodiment of the utility model. If the preferred implementation methods in each preferred embodiment are not obviously self-contradictory or based on a preferred implementation method, each preferred implementation method can be arbitrarily superimposed and used in combination. The embodiments and specific parameters in the embodiments are only for the purpose of clearly describing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model. The patent protection scope of the utility model is still subject to its claims. All equivalent structural changes made by using the description and drawings of the utility model should be included in the protection scope of the utility model.

Claims

1. A 35kV and above arrester test tool, characterized in that: It includes a base, two insulating pillars are arranged on the base, a fixed seat is arranged on the base in front of the insulating pillar, double-axis cylinders are arranged on both sides of the fixed seat, the output end of the double-axis cylinder is transmission-connected with a fixed clamp, a connecting column is arranged in the center of the fixed seat, a rotating platform is sleeved on the connecting column, a barcode scanning gun is installed on the rotating platform, a second connecting plate is installed on the top of the insulating pillar, a shaft sleeve is sleeved on the insulating pillar below the second connecting plate, a first connecting plate is installed on the shaft sleeve, the first connecting plate is connected with a pressure-equalizing ring through a pin shaft, a spiral compression spring is sleeved on the pin shaft, a machine-controlled valve is installed on the top of the pressure-equalizing ring, a double-helix telescopic air pipe is also installed between the first connecting plate and the second connecting plate, one end of the double-helix telescopic air pipe is connected to the air inlet end of the machine-controlled valve, and the other end of the double-helix telescopic air pipe is connected to an air source, a telescopic lead pipe is arranged on the first connecting plate above the pressure-equalizing ring, and the telescopic lead pipe passes through the second connecting plate and is connected to a DC power supply, and a power component for driving the first connecting plate to move up and down along the height direction of the insulating pillar is also installed on the base.

2. A 35kV and above arrester test tool according to claim 1, characterized in that: The power assembly includes a servo motor arranged on a base, the output end of the servo motor is transmission-connected to a lower pulley, an upper pulley is arranged on the lower surface of the second connecting plate between two insulating pillars, belts are sleeved on the upper pulley and the lower pulley, a movable plate is installed on the belt, and the movable plate is connected to the first connecting plate through a transverse plate.

3. A 35kV and above arrester test tool according to claim 1, characterized in that: A reduction motor is installed in the base, and a driving end of the reduction motor is transmission-connected to the rotating platform.

4. A 35kV and above arrester test tool according to claim 1, characterized in that: The telescopic lead tube is an aluminum foil tube.

5. A 35kV and above arrester test tool according to claim 1, characterized in that: The material of the pressure equalizing ring is rust-proof aluminum plate.

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