A disc insulator test auxiliary device

Abstract

The present invention provides a disc-shaped insulator test auxiliary device, comprising: a support frame and a plurality of horizontal load-bearing members erected on the support frame; a plurality of clamping parts and connecting parts are arranged alternately on the support frame along the vertical direction, and each clamping part is located above each corresponding connecting part, for placing each corresponding horizontal load-bearing member; a plurality of hanging parts are provided on each horizontal load-bearing member, for hanging insulators to be tested respectively; a connecting part is arranged under the load-bearing rod, for placing a conductive rod, so that the bottom of the insulator is connected to the conductive rod. The present invention arranges a plurality of clamping parts and connecting parts alternately on the support frame to respectively erect a plurality of load-bearing members and a plurality of conductive rods, thereby hanging the insulator between the load-bearing members and the conductive rod, so as to fix the insulator, which provides great convenience for subsequent tests, and also overcomes the problems of inconvenient and labor-consuming transportation of insulators.

Description

Technical Field

[0001] The invention relates to the technical field of high voltage testing, and in particular to a disc-shaped insulator testing auxiliary device. Background Art

[0002] Disc suspension insulators refer to suspension insulators composed of disc-shaped insulating parts and connecting hardware. The insulating parts are usually made of electrical ceramics and tempered glass. The hardware is generally composed of an iron cap and a needle-shaped steel foot. Therefore, disc suspension insulators are also called cap-foot type suspension insulator strings.

[0003] The disc insulators are mainly tested for quality inspection based on GB / T 1001.1-2003 "Insulators for overhead lines with nominal voltages above 1000V Part 1: Porcelain or glass insulator components for AC systems - Definitions, test methods and criteria" and GB / T 19443-2017 "Insulators for overhead lines with nominal voltages above 1500V - Porcelain or glass insulator string components for DC systems - Definitions, test methods and acceptance criteria". Due to the large number of inspection items and the scattered inspection equipment used, the disc insulators need to be transported to the locations of various inspection equipment for testing.

[0004] According to the standard requirements, a power frequency spark test is required before the disc-shaped porcelain insulator is tested to determine whether the porcelain parts of the disc-shaped porcelain insulator are damaged during transportation. Subsequent tests are carried out after the insulator passes the power frequency spark test. The current power frequency spark test method before the test is to place the single insulators in a row, and place the iron caps directly on the grounding iron plate or place the iron caps on the plastic support tube, so that the insulators are vertical and the steel feet are facing upward. A conductive rod is placed above the steel foot, and the distance between the conductive rod and the steel foot is the distance that can generate power frequency sparks. After the insulator is qualified before the test, it is necessary to perform temperature cycle tests, tension tests, steep wave tests, etc. The insulator needs to be transported to different locations. The current way to transport insulators is mainly to place the insulators in an iron frame for operation, or to carry the insulators manually.

[0005] The above-mentioned power frequency spark test has the following disadvantages: (1) It is difficult to place the insulator cap directly on the grounding plate to make the insulator vertical, and the insulator is easy to fall over; (2) It is fixed with a plastic support tube. Since there are many types of insulator caps, many plastic support tubes are required, and it is inconvenient to find a suitable plastic support tube when using it. Even if the support tube is used, the insulator will tilt; (3) The distance between the conductive rod and each insulator steel foot is different, and auxiliary metal parts need to be placed to make the spark gap meet the requirements.

[0006] There are the following disadvantages to using an iron frame or manually transporting insulators: (1) Since disc-shaped insulators are heavy, a 550kN disc-shaped porcelain insulator weighs about 35kg, and it is laborious to manually place them in the iron frame, take them out, or directly carry them; (2) It is inconvenient to place insulators in the iron frame or take them out; (3) When doing other tests, insulators can only be moved from the ground or the iron frame, which is inconvenient to use auxiliary mechanized equipment. Summary of the invention

[0007] In view of this, the present invention proposes a disc insulator test auxiliary device, which aims to solve the problems of difficult fixation, inconsistent spark gaps, inconvenient insulator transportation, and laborious manual handling during the power frequency spark test of existing disc-shaped porcelain insulators.

[0008] The present invention proposes a disc-shaped insulator test auxiliary device, comprising: a support frame and a plurality of horizontal load-bearing members erected on the support frame; wherein, the support frame is provided with a plurality of clamping parts and connecting parts alternately arranged along the vertical direction, and each of the clamping parts is located above each corresponding connecting part, so as to place each corresponding horizontal load-bearing member; each of the horizontal load-bearing members is provided with a plurality of hanging parts, so as to respectively hang the insulators to be tested; the connecting part is arranged below the load-bearing rod, so as to place the conductive rod, so that the bottom of the insulator is connected to the conductive rod.

[0009] Furthermore, in the above disc-shaped insulator test auxiliary device, the support frame includes: two brackets and a connecting plate arranged in parallel; wherein the connecting plate is located at the bottom of the two brackets and connected to the two brackets.

[0010] Furthermore, in the above disc-shaped insulator test auxiliary device, the bracket includes: a base and a column connected to the base; wherein the column has a plurality of clamping parts spaced apart along the height direction, and a connecting part is provided at a preset position below each clamping part.

[0011] Furthermore, the above-mentioned disc-shaped insulator test auxiliary device also includes: a plurality of first hooks; wherein the top hook body of the first hook is clamped on the hanging portion of the horizontal load-bearing member, and the bottom hook body of the hook is adapted to the shape of the connecting cavity inside the iron cap of the insulator.

[0012] Furthermore, the above disc-shaped insulator test auxiliary device also includes: a plurality of second hooks; wherein the top end of each second hook is clamped with the steel foot of the insulator, and the bottom end of each second hook is connected to the conductive rod.

[0013] Furthermore, in the above-mentioned disc-shaped insulator test auxiliary device, the second hook includes: a connected clamping body, an insulating connector and a hook; wherein, a mounting groove matching the steel foot of the insulator is provided inside the clamping body for clamping with the steel foot of the insulator; the top of the insulating connector is connected to the bottom of the clamping body, and the bottom of the insulating connector is connected to the hook via an elastic connector.

[0014] Furthermore, in the above disc-shaped insulator test auxiliary device, the insulating connector is a frame-like structure with openings at both ends.

[0015] Furthermore, in the above-mentioned disc-shaped insulator test auxiliary device, the horizontal load-bearing member is a rod-shaped structure, on which a plurality of grooves are spaced apart as hanging parts.

[0016] Furthermore, in the above disc-shaped insulator test auxiliary device, lifting ears are provided at both ends of the horizontal load-bearing member to provide lifting points for lifting equipment.

[0017] Furthermore, in the above-mentioned disc-shaped insulator test auxiliary device, the clamping portion is an L-shaped clamping groove, and the connecting portion is a horizontally arranged sleeve.

[0018] In the present invention, a plurality of clamping parts and connecting parts are alternately arranged on the support frame to respectively set up a plurality of load-bearing members and a plurality of conductive rods, thereby achieving the goal of hanging the insulators between the load-bearing members and the conductive rods, so as to facilitate the fixing of the insulators, which provides great convenience for subsequent tests and also overcomes the problems of inconvenient and labor-intensive transportation of insulators. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of a disc insulator test auxiliary device provided in an embodiment of the present invention;

[0021] Figure 2 A partial structural diagram of a support frame in a disc-shaped insulator test auxiliary device provided in an embodiment of the present invention;

[0022] Figure 3 A structural diagram of a first hook provided in an embodiment of the present invention;

[0023] Figure 4 A structural diagram of a second hook provided in an embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the state of the suspended insulator undergoing a power frequency spark test in an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the state of performing a power frequency spark test on an insulator in an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of the state of performing a temperature cycle test on an insulator in an embodiment of the present invention;

[0027] Figure 8 It is another schematic diagram of a state of performing a temperature cycle test on an insulator in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] See also Figure 1 and Figure 2 The disc-shaped insulator test auxiliary device of the embodiment of the present invention comprises: a support frame 1 and a plurality of horizontal load-bearing members 2 erected on the support frame 1; wherein, the support frame 1 is provided with a plurality of clamping portions 11 and connecting portions 12 alternately arranged along the vertical direction, and each of the clamping portions 11 is located above each corresponding connecting portion 12, for placing each corresponding horizontal load-bearing member 2; each of the horizontal load-bearing members 2 is provided with a plurality of hanging portions 21, for respectively hanging insulators 3 to be tested; the connecting portion 12 is arranged below the load-bearing rod, for placing a conductive rod, so that the bottom of the insulator 3 is connected to the conductive rod.

[0030] Specifically, the support frame 1 can be a frame structure that can support the horizontal load-bearing member 2, the insulator 3 suspended on the horizontal load-bearing member 2, and the conductive rod mounted on the connecting portion 12. A plurality of rollers can be provided at the bottom of the support frame 1 to facilitate moving the insulator 3 to be tested to the test site. The clamping portion 11 can be an L-shaped clamping slot, and the connecting portion 12 can be a horizontally arranged sleeve.

[0031] There can be at least one clamping portion 11 on the support frame 1, and there can be at least one connecting portion 12. The clamping portion 11 and the connecting portion 12 on the support frame 1 are arranged alternately, that is to say. When there are multiple clamping portions 11 and connecting portions 12, each clamping portion 11 and each connecting portion 12 can be a group of mounting portions, providing a mounting portion for the horizontal load-bearing member 2 and the conductive rod. In each group of mounting portions, the clamping portion 11 is located above the connecting portion 12, and the insulator 3 is suspended in the area between the clamping portion 11 and the connecting portion 12. The distance between the connecting portion 12 and the clamping portion 11 of two adjacent groups of mounting portions can be determined according to actual conditions.

[0032] There can also be multiple horizontal load-bearing members 2, and multiple groups of insulators 3 can be suspended at the same time. One or more hanging parts 21 are provided on the horizontal load-bearing member 2 to provide hanging points for the insulators 3 to be tested. The horizontal load-bearing member 2 is a straight rod-shaped structure, and multiple grooves are provided thereon as hanging parts 21. The spacing between each groove can be determined according to actual conditions, for example, it can be 30 mm. The groove can be a through groove opened along the width direction of the horizontal load-bearing member 2, and its cross-section can be square. The grooves are arranged at intervals, which is suitable for hanging insulators 3 with different disc diameters and can prevent the insulators 3 from sliding on the load-bearing member.

[0033] In practice, the two ends of the horizontal load-bearing member 2 are provided with lifting ears 22 to provide lifting points for the lifting equipment. The lifting ears 22 can be annular or rectangular frame structures, which are welded to the two ends of the side of the horizontal load-bearing member 2 opposite to the hanging portion 21.

[0034] It can be obviously concluded from the above that the disc-shaped insulator test auxiliary device provided in this embodiment, by arranging multiple clamping parts and connecting parts alternately on the support frame to respectively set up multiple load-bearing members and multiple conductive rods, thereby hanging the insulator between the load-bearing members and the conductive rods, so as to facilitate the fixation of the insulator, which provides great convenience for subsequent tests and also overcomes the problems of inconvenient and labor-consuming transportation of insulators.

[0035] See also Figure 1 and Figure 2 In the above embodiment, more specifically, the support frame 1 includes: two brackets 13 and a connecting plate 14 arranged in parallel; wherein the connecting plate 14 is located at the bottom of the two brackets 13 and connected to the two brackets 13.

[0036] Continue reading Figure 2 More specifically, the bracket 13 includes: a base 131 and a column 132 connected to the base 131; wherein the column 132 has a plurality of clamping portions 11 spaced apart along the height direction, and a connecting portion 12 is provided at a preset position below each clamping portion 11.

[0037] The base 131 may be a plate-like structure, the column 132 may be a cylindrical, square column or other structure, a plurality of rollers 4 may be provided at the bottom of the base 131, the outer surface of the rollers may be made of rubber, and the rollers may be universal wheels to facilitate the movement of the support frame 1.

[0038] The spacing between the clamping portion 11 and the corresponding connecting portion 12 in each set of mounting portions needs to be determined according to the size of the insulator 3, etc. The distance between the connecting portion 12 and the clamping portion 11 in two adjacent sets of mounting portions can be determined according to the test requirements. The clamping portion 11 can be an L-shaped plate structure, one end of which is connected to the column 132 to form a clamping groove structure with the column 132, so as to facilitate the clamping of the horizontal load-bearing member 2 therein. The clamping portions 11 on the two columns 132 are arranged one by one to set the horizontal load-bearing member 2 on the support frame 1. The connecting portion 12 can be a sleeve, which is horizontally connected to the column 132, and a notch can be provided on the sleeve along the axial direction to facilitate the placement of the conductive rod 5. The connecting portions 12 on the two columns 132 are arranged one by one to set the conductive rod 5 on the support frame 1. The two ends of the conductive rod 5 are partially insulated and sleeved in the connecting portion 12 on the support frame 1. The middle part of the conductive rod 5 is a conductor for connecting the steel foot and the high-voltage line 6.

[0039] See also Figure 1 and Figure 3 In the above embodiments, it also includes: a plurality of first hooks 7; wherein the top hook body 71 of the first hook is clamped to the clamping portion 21 of the horizontal load-bearing member 2, and the bottom hook body 72 of the hook is adapted to the shape of the connecting cavity inside the iron cap of the insulator 3.

[0040] Specifically, the number of the first hooks 7 can be determined according to the number of the insulators 3 to be tested. A number of first hooks 7 are hung on the horizontal load-bearing members 2 set up in each group of mounting parts. The first hook 7 can be composed of a top hook body and a bottom hook body, and the top hook body and the bottom hook body can be integrally formed.

[0041] The top hook body 71 may include a bent portion 711 and a connecting rod 712 connected to the bottom thereof, and the bent portion is snap-fitted with the hanging portion 21. The bottom hook body 72 may be composed of a vertical connecting column 721 and a connecting head 722 connected to the lower portion thereof, wherein the lower connecting head may be a disc-shaped structure with upper and lower surfaces being curved surfaces protruding outward. The shape of the vertical connecting column of the bottom hook body is adapted to the opening shape of the iron cap portion of the insulator 3, and a connecting hole is provided on the vertical connecting column, through which the connecting column of the top hook body may be sleeved with the bottom hook body.

[0042] See also Figure 1 and Figure 4, and further includes: a plurality of second hooks 8 ; wherein the top end of each of the second hooks 8 is snap-fitted with the steel foot of the insulator 3 , and the bottom end of each of the second hooks 8 is connected with the conductive rod 5 .

[0043] Furthermore, the second hook 8 includes: a connected snap-on body 81, an insulating connector 82 and a hook 83; wherein the snap-on body 81 is provided with a mounting groove matching the steel foot of the insulator 3 for snapping with the steel foot of the insulator 3; the top of the insulating connector 82 is connected to the bottom of the snap-on body 81, and the bottom of the insulating connector 82 is connected to the hook 83 via an elastic connector 84.

[0044] Specifically, the clamping body 81 is a cylindrical body with an open top and a closed bottom. A connecting hole is provided on the cylindrical body in the vertical direction, and the connecting hole is connected to the hollow part inside the cylindrical body. A vertical notch and an arc-shaped opening are provided on the side wall of the cylindrical body, and the arc-shaped opening is located below the vertical notch and the two are connected. The shapes of the vertical opening and the arc-shaped notch are adapted to the shape of the bottom of the steel foot of the insulator 3. The hook 83 can be a circular hook with a notch, and its diameter is adapted to the outer diameter of the conductive rod 5. The elastic connector 84 can be a metal spring, so that the hook 83 can be hung on the conductive rod 5 when the structural height of the insulator deviates.

[0045] The insulating connector 82 is a frame-like structure with openings at both ends, and the opening direction of the insulating connector 82 is perpendicular to the clamping body 81. For example, the insulating connector 82 is a plastic insulating frame. The elastic connector 84 below the insulating connector 82 serves as a metal conductor. When a power frequency voltage is applied, the insulating connector 82 will generate a power frequency spark, which can be used to determine whether the insulator has defects. Compared with the prior art, no additional metal parts are required to make the spark gap of the insulator 3 meet the test requirements, which is conducive to improving the test efficiency.

[0046] See also Figure 5 - 8. The following describes in detail the use scenarios of the disc insulator 3 test auxiliary device of the present invention with two specific examples:

[0047] 1. Power frequency spark test: Place the test insulators 3 in a row on the ground, put the first hook 7 on the iron cap of the insulator 3, and then hang the first hook 7 on the horizontal load-bearing member 2, and use the overhead crane 101 to lift the insulator 3; hang the horizontal load-bearing member 2 on the support frame 1 and hang the clamping body 81 of the second hook 8 on the steel foot, and hang the hook 83 of the second hook on the conductive rod 5; fix the high-voltage line 6 on the conductive rod 5, ground the support frame 1, and apply high voltage to carry out the power frequency spark test;

[0048] 2. Temperature cycle test: First, hang the insulators 3 on the horizontal load-bearing members 2, and then hoist the horizontal load-bearing members 2 to place each insulator 3 in the transfer rack. Then, lift the insulators 3 on the transfer rack with a crane and place them in the water boiling frame 9. After placing the first layer, add partitions 10 to place the second layer of insulators 3, and then the temperature cycle test can be carried out.

[0049] In summary, in the present invention, a plurality of clamping parts and connecting parts are alternately arranged on the support frame to respectively set up a plurality of load-bearing members and a plurality of conductive rods, thereby achieving the goal of hanging the insulators between the load-bearing members and the conductive rods, so as to facilitate the fixation of the insulators, which provides great convenience for subsequent tests; in addition, since the connecting parts on the support frame are arranged one by one, the distance between the conductive rods and the steel feet of each insulator can be kept consistent, so that the spark gap of each insulator to be tested can be kept consistent without placing additional metal parts, so as to meet the test requirements and greatly improve the test efficiency.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A disc insulator test auxiliary device, characterized in that: include: A support frame, a plurality of first hooks, a second hook of a tow bar, and a plurality of horizontal load-bearing members erected on the support frame; wherein, The support frame is provided with a plurality of clamping parts and connecting parts alternately arranged along the vertical direction, and each of the clamping parts is located at a position opposite to the support frame. The corresponding horizontal load-bearing member is placed above each of the connecting parts; each of the horizontal load-bearing members There are several hanging parts on the top to hang the insulators to be tested respectively; The connecting part is arranged below the load-bearing rod to place the conductive rod, so that the bottom of the insulator is connected to the The conductive rod is connected; The top hook body of the first hook is clamped to the hanging part of the horizontal load-bearing member, and the bottom hook body of the first hook is adapted to the shape of the connecting cavity inside the iron cap of the insulator; the first hook is composed of a top hook body and a bottom hook body; the top hook body includes a bent part and a connecting rod connected to its bottom, and the bent part is clamped to the hanging part; the bottom hook body is composed of a vertical connecting column and a connecting head connected to its lower part, wherein the lower connecting head can be a disc-shaped structure with upper and lower surfaces as curved surfaces protruding outward, and the shape of the vertical connecting column of the bottom hook body is adapted to the opening shape of the iron cap part of the insulator; The top end of each second hook is connected to the steel foot of the insulator, and the bottom end of each second hook is connected to the guide The second hook comprises: a connected card body, an insulating connector and a hook; wherein, The clamping body is provided with a mounting groove matching the steel foot of the insulator for mounting with the steel foot of the insulator. The top of the insulating connector is connected to the bottom of the locking body, and the bottom of the insulating connector is connected to the hook through an elastic connector; the insulating connector is a frame-like structure with openings at both ends; the locking portion is an L-shaped slot, and the connecting portion is a horizontally arranged sleeve.

2. The disc insulator test auxiliary device according to claim 1, characterized in that: The support frame comprises: two A bracket and a connecting plate are arranged in parallel; wherein, The connecting plate is located at the bottom of the two brackets and is connected to the two brackets.

3. The disc insulator test auxiliary device according to claim 2, characterized in that: The support comprises: a base and a column connected to the base; wherein, The column is provided with a plurality of clamping parts at intervals along the height direction, and a connecting rod is provided at a preset position below each clamping part. Connecting part.

4. The disc insulator test auxiliary device according to claim 1, characterized in that: The horizontal load-bearing member is a rod The structure has a plurality of grooves spaced apart thereon as hanging parts.

5. The disc insulator test auxiliary device according to claim 1, characterized in that: The two horizontal load-bearing members There are lifting ears at the ends to provide lifting points for lifting equipment.

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