CN112415234B

CN112415234B - GIS test clamp

Info

Publication number: CN112415234B
Application number: CN202011258498.3A
Authority: CN
Inventors: 高奇思; 李俊文; 刘波; 张霖; 郭天昀; 陈湫林; 靳斌; 李威; 康倢灐
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2023-04-11
Anticipated expiration: 2040-11-12
Also published as: CN112415234A

Abstract

The invention provides GIS testing pliers which comprise an operating handle, a first operating rod and a second operating rod, wherein the first operating rod and the second operating rod are symmetrically arranged; the joint assembly comprises metal joints detachably connected with two ends of the first operating rod and the second operating rod; through the hookup location with operating handle of adjustment metal joint for the test pincers can insert GIS equipment hole, also can press from both sides the outer axle of GIS equipment and test, and metal joint's easy dismounting is swift, to the GIS equipment of different models, utilizes this GIS test pincers can easily test.

Description

GIS test clamp

Technical Field

The invention relates to the technical field of GIS equipment test maintenance, in particular to a pair of GIS equipment test tongs.

Background

The GIS is an English abbreviation of a gas insulated totally-enclosed combined electrical appliance, and consists of a circuit breaker, a disconnecting switch, a grounding switch, a mutual inductor, a lightning arrester, a bus, a connecting piece, an outgoing line terminal and the like, all of the equipment or components are enclosed in a metal grounded shell, and SF6 insulating gas with certain pressure is filled in the equipment or components; at present, a large number of GIS complete sets are used in a transformer substation, and the GIS complete sets have the characteristics of small occupied area, low maintenance cost and the like, loop resistance tests of the GIS complete sets are used as conventional test items at present, the test times are frequent, and only equipment above 110kV of our bureau needs to be tested for nearly one hundred times every year. And because the numerical value of the loop resistance is in the microohm level, the requirement on the accuracy of the test is higher.

The GIS equipment of a plurality of producer designs different models has been put into operation at the transformer substation scene, carry out the in-process of return circuit resistance test at the scene, because the test contact of the GIS equipment of each different model is different, the equipment of part model is because the structure of contact point is special, the unable good contact of traditional test pincers, can't accomplish the test even, consequently, how to solve the wiring problem of GIS equipment loop resistance test, improve staff's work efficiency, it is the problem that present GIS equipment test process seriously needs to be solved to promote GIS equipment test's accuracy.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

Therefore, the technical problem to be solved by the invention is to overcome the defect that GIS equipment of different models cannot be adapted in the prior art, thereby providing a GIS testing clamp.

In order to solve the technical problems, the invention provides the following technical scheme: a GIS testing clamp comprises an operating handle, a clamping device and a clamping device, wherein the operating handle comprises a first operating rod and a second operating rod which are symmetrically arranged, a rotating shaft is arranged in the middle of the first operating rod and the second operating rod, and the first operating rod is rotatably connected with the second operating rod; and the joint assembly comprises metal joints detachably connected with two ends of the first operating rod and the second operating rod.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the whole Y-shaped operating handle, the first operating rod and the first half of the second operating rod form a certain included angle, and the side faces of the rod body of the second half are attached.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the axis of rotation overcoat is equipped with the torsional spring, torsional spring connection first action bars with the second action bars, the torsional spring drives all the time first action bars with the first half of second action bars is kept away from each other, and the latter half is close to each other.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the cross section of the first operating rod and the cross section of the second operating rod are square frames close to an outer opening, the shape of the metal joint corresponds to the shape of the frames, sliding rails are arranged on the inner walls of the first operating rod and the second operating rod, and sliding grooves are correspondingly arranged on the outer wall of the metal joint.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the metal joint tip is provided with female joint, female joint sets up to semi-circular cylinder, and the diameter is 6.4mm.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the side of metal joint is provided with outer axle clamping block, outer axle clamping block sets up to the zigzag.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the metal joint is kept away from the terminal surface of hole joint is provided with the wiring hole, the downthehole bolt that is provided with of wiring.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the top surface that first action bars and second action bars are close to the tip is provided with the locating hole, it is provided with one or more screw hole to correspond the equidistance on the metal joint.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the inside slip of first action bars and second action bars is connected with the gripping handle, the gripping handle is provided with the same the spout and the screw hole, gripping handle side is provided with unsmooth spaced insulating material.

As a preferred scheme of the GIS test clamp of the present invention, wherein: the metal joint material is red copper, and the operating handle material is an insulating material.

The invention has the beneficial effects that: through the hookup location with operating handle of adjustment metal joint for the test pincers can insert GIS equipment hole, also can press from both sides the outer axle of GIS equipment and test, and metal joint's easy dismounting is swift, to the GIS equipment of different models, utilizes this GIS test pincers can easily test.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a schematic view of the overall structure of a testing clamp after a left metal joint is hidden;

FIG. 2 is a schematic structural diagram of the upper half portion of a connecting metal joint for testing the state of an inner hole;

FIG. 3 is a schematic structural diagram of a lower half portion of a connecting metal joint for testing the state of an outer shaft;

FIG. 4 is a schematic view of a metal joint structure;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.

Example 1

The present embodiment provides a GIS test clamp, as shown in fig. 1-4, comprising,

the operating handle 100 comprises a first operating rod 101 and a second operating rod 102 which are symmetrically arranged, a rotating shaft 103 is arranged in the middle of the first operating rod 101 and the second operating rod 102, and the first operating rod 101 is rotatably connected with the second operating rod 102; and the number of the first and second groups,

the joint assembly 200 includes metal joints 201 detachably coupled to both ends of the first and

second levers

101 and 102.

The operating handle 100 is in a shape of a "Y", the first operating rod 101 and the second operating rod 102 form a certain included angle at the upper half part, and the side surfaces of the rod bodies at the lower half part are attached.

The torsion spring 104 is sleeved outside the rotating shaft 103, the torsion spring 104 is connected with the first operating rod 101 and the second operating rod 102, the torsion spring 104 drives the upper half parts of the first operating rod 101 and the second operating rod 102 to be away from each other and the lower half parts of the first operating rod and the second operating rod to be close to each other all the time.

The cross sections of the first operating rod 101 and the second operating rod 102 are square frames with openings close to the outer sides, the shape of the metal joint 201 corresponds to the shape of the frames, sliding rails 101a are arranged on the inner walls of the first operating rod 101 and the second operating rod 102, and sliding grooves 201e are correspondingly arranged on the outer wall of the metal joint 201.

The end of the metal joint 201 is provided with an inner hole joint 201a, and the inner hole joint 201a is a semicircular cylinder with the diameter of 6.4mm.

The side of the metal connector 201 is provided with an outer shaft clamping block 201b, and the outer shaft clamping block 201b is arranged in a zigzag shape.

The end face of the metal joint 201 far away from the inner hole joint 201a is provided with a wiring hole 201c, and a bolt is arranged in the wiring hole 201 c.

The top surfaces of the first operating rod 101 and the second operating rod 102 near the ends are provided with positioning holes 101b, and the metal joint 201 is provided with one or more threaded holes 201d at equal intervals.

The first operating rod 101 and the second operating rod 102 are connected with a grip handle 105 in a sliding manner, the grip handle 105 is provided with a same sliding groove 201e and a threaded hole 201d, and the side surface of the grip handle 105 is provided with insulating materials at concave-convex intervals.

The metal connector 201 is made of red copper, and the operating handle 100 is made of an insulating material.

The implementation mode is as follows: in a conventional state, the lower half parts of the first operating rod 101 and the second operating rod 102 are attached, the included angle of the upper half part is larger than 90 degrees, the first operating rod 101 and the second operating rod 102 are symmetrically arranged, and the two operating rods are called as operating rods; the metal connector 201 is connected to the upper end of the operating rod, one end with an inner hole connector 201a extends out of the operating rod, the metal connector 201 is fixed by a screw penetrating through the positioning hole 101b and the threaded hole 201d, the upper ends of the first operating rod 101 and the second operating rod 102 are always kept separated through the torsion force of the torsion spring 104, the gripping handle 105 is arranged on the lower half portion of the operating rod, the testing clamp can be used for extending into an inner hole of GIS equipment to be tested at the moment, the first operating rod 101 and the second operating rod 102 on the lower half portion are separated by hands, the first operating rod 101 and the second operating rod 102 on the upper half portion are driven to be closed at the moment, when the first operating rod 101 and the second operating rod 102 are closed, the metal connector 201 is closed at the same time, the inner hole connector 201a is combined into a cylinder, the diameter of the cylinder is 6.4mm, the cylinder can extend into the inner hole which is not smaller than M8, the length of the inner hole connector 201a is not smaller than 8mm, the force for pulling the operating rod is not exerted at the moment, the first operating rod 101 and the inner hole of the operating rod 102 can be tested through a wiring hole or a wiring bolt in a wiring hole 201c, and the wiring hole, and the wiring bolt is tested, and the wiring connector 201c is connected to be tested in the inner hole 201 c.

When an outer shaft extending out of the GIS equipment needs to be clamped for testing, screws matched with the positioning holes 101b and the threaded holes 201d are unscrewed, the two metal connectors 201 are taken down, one end of the inner hole connector 201a points to the upper end and slides into the operating rod of the lower half portion, the outer shaft clamping block 201b is arranged close to the inner side, the screws penetrate through the positioning blocks 101b and the threaded holes 201d to fix the metal connectors 201, the grasping handle 105 is also arranged on the upper half portion of the operating rod in a sliding mode, the first operating rod 101 and the second operating rod 102 of the upper half portion are pushed by hands to be close to each other, the first operating rod 101 and the second operating rod 102 of the lower half portion can be separated, the outer shaft clamping block 201b is close to the outer shaft needing to be clamped, the first operating rod 101 and the second operating rod 102 of the lower half portion can be clamped tightly without applying pushing force and receiving the acting force of the torsion spring 104, the first operating rod 101 and the second operating rod 102 of the lower half portion can drive the outer shaft clamping block 201b to clamp the two outer shaft, and then the outer shaft is tested in the wiring hole 201c through winding, or the bolt in the wiring hole 201c is connected for testing.

Has the beneficial effects that: the connecting position of the metal joint and the operating handle is adjusted, so that the testing clamp can be inserted into an inner hole of the GIS equipment and can also be clamped on an outer shaft of the GIS equipment for testing, the metal joint 201 is convenient and quick to disassemble and assemble, and the GIS testing clamp can be used for easily testing GIS equipment of different models; the metal joint 201 can be designed into different models to deal with more different practical scenes; the torsion spring 104 adopts a high-elasticity torsion spring, so that the pressure of a metal contact surface is increased, and the contact resistance is reduced; the diameter of the inner hole joint 201a is 6.4mm after combination, the inner hole joint can extend into an M8 threaded screw at the lowest, and can enter into a depth exceeding 8mm to increase the surface contact area, so that the test data is more stable and credible; the outer shaft clamping block 201b is zigzag in shape, so that the friction force between the outer shaft clamping block and the outer shaft of the GIS equipment can be increased, the clamping is more stable, and the outer shaft clamping block is not easy to fall off; the metal joint 201 is provided with a plurality of threaded holes 201d, so that the extending length of the metal joint 201 can be adjusted to correspond to holes or shafts with different sizes; the grasping handle 105 is convenient for a user to operate, grasping is more comfortable, friction can be increased by concave-convex intervals, and safety can be guaranteed by insulating materials; red copper is selected for use to metal joint 201's material, reduces the damage to GIS equipment screw thread hole to increase the conductivity, insulating material is selected for use to operating handle, can guarantee user safety, guarantees the test data accuracy simultaneously.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a GIS test fixture which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the operating handle (100) comprises a first operating rod (101) and a second operating rod (102) which are symmetrically arranged, a rotating shaft (103) is arranged in the middle of the first operating rod (101) and the second operating rod (102), and the first operating rod (101) is rotatably connected with the second operating rod (102); and (c) a second step of,

a joint assembly (200) comprising a metal joint (201) detachably connected to both ends of the first and second operation levers (101, 102);

the operating handle (100) is integrally Y-shaped, a certain included angle is formed between the first operating rod (101) and the upper half part of the second operating rod (102), and the side surfaces of the rod bodies on the lower half part are attached;

a torsion spring (104) is sleeved outside the rotating shaft (103), the torsion spring (104) is connected with the first operating rod (101) and the second operating rod (102), the torsion spring (104) always drives the upper half parts of the first operating rod (101) and the second operating rod (102) to be away from each other, and the lower half parts of the first operating rod and the second operating rod are close to each other;

the cross sections of the first operating rod (101) and the second operating rod (102) are square frames with openings close to the outer sides, the shape of the metal joint (201) corresponds to the shape of the frames, sliding rails (101 a) are arranged on the inner walls of the first operating rod (101) and the second operating rod (102), and sliding grooves (201 e) are correspondingly arranged on the outer wall of the metal joint (201)

Positioning holes (101 b) are formed in the top surfaces, close to the end parts, of the first operating rod (101) and the second operating rod (102), and one or more threaded holes (201 d) are correspondingly and equidistantly formed in the metal joint (201);

a grabbing handle (105) is connected to the inner portions of the first operating rod (101) and the second operating rod (102) in a sliding mode, the grabbing handle (105) is provided with the same sliding groove (201 e) and the same threaded hole (201 d), and insulating materials at concave-convex intervals are arranged on the side face of the grabbing handle (105);

the metal joint (201) is made of red copper, and the operating handle (100) is made of an insulating material.

2. The GIS test clamp of claim 1, wherein: the end part of the metal joint (201) is provided with an inner hole joint (201 a), the inner hole joint (201 a) is arranged to be a semicircular cylinder, and the diameter of the inner hole joint is 6.4mm.

3. The GIS test clamp of claim 2, wherein: the side of metal joint (201) is provided with outer axle clamp splice (201 b), outer axle clamp splice (201 b) sets up to the zigzag.

4. The GIS test clamp of claim 3 wherein: the terminal surface that metal joint (201) kept away from female coupling (201 a) is provided with wiring hole (201 c), be provided with the bolt in wiring hole (201 c).