CN212207461U

CN212207461U - Wire clamp for CT (current transformer) upwelling test of switch cabinet

Info

Publication number: CN212207461U
Application number: CN202020658558.XU
Authority: CN
Inventors: 袁红艳
Original assignee: Hubei Zhongxuntai Technology Co ltd
Current assignee: Hubei Zhongxuntai Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-22
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a wire clamp for CT (computed tomography) upwash test of a switch cabinet, which comprises a wire clamp body, two clamping pieces, a wire pressing nose and a camera fixing piece, wherein one side of each clamping piece is provided with a connecting rod vertical to the clamping piece, two ends of the other side of the clamp are respectively provided with a bulge, the front ends of the inner sides of the wire clamp arms are respectively provided with a first through hole, the two clamping pieces are respectively arranged at the front ends of the inner sides of the two wire clamp arms, one side of each clamping arm is rotatably attached to the inner side of the corresponding wire clamping arm, the connecting rods of the clamping pieces can rotatably penetrate through the corresponding first through holes, one end of each connecting rod is connected with the middle part of one side of the corresponding clamping piece, the other end of the connecting rod penetrates through the corresponding wire clamping arm, the wire pressing nose and one end of the camera fixing piece are respectively and rotatably connected with the other ends of the two connecting rods, and are connected and fixed with the corresponding connecting rods at any rotating positions thereof through second positioning pieces. The utility model provides a fastener for cubical switchboard CT upwelling is experimental, its simple structure, safe and reliable, easy and simple to handle.

Description

Wire clamp for CT (current transformer) upwelling test of switch cabinet

Technical Field

The utility model relates to a cubical switchboard rises and flows experimental articles for use field. More specifically, the utility model relates to a fastener for cubical switchboard CT rises and flows experiment.

Background

In recent years, with the great increase of social electricity consumption and the rapid development of power grid construction, the requirement on the power supply reliability of a power system is higher and higher, wherein outdoor power equipment is used as an important component part for power transmission and distribution, and the role of the outdoor power equipment in modern power grid and engineering construction is more and more important. A10 kV switch cabinet is an electrical equipment cabinet which is commonly used in the power industry. The primary upflow test is indispensable work for daily protection transmission tests. Particularly, when the CT is replaced and the protection device is checked to work, whether the secondary wiring of the equipment has errors or not and whether the protection fixed value is accurate or not are often judged through a primary current test.

A general 10kV switch cabinet current rise test mode and a work flow are as follows, the start → the removal of a rear cabinet door → the fixation of a current wire clamp of a large current generator at two ends of a CT → the start of a loading current test of the large current generator- → the removal of the current wire clamp- → the installation of the rear cabinet door → the end. However, the 10kV switch cabinet is found to be narrow in internal space during operation, in order to meet safety requirements, leads on two sides of the CT and copper bars are often wrapped by insulating sheaths, and the test wire clamp can only be connected with a CT copper bar fixing nut. The traditional test wire clamp has a large and tight structure for ensuring the through-flow capacity of a contact surface, one person can operate the clamp with one hand very laboriously, a clamping opening is easy to slide, the contact is not tight enough, and the operation in a cabinet is inconvenient. The other method is to temporarily loosen the CT and the open contact connecting copper bar nut, tightly press the wiring nose of the output line of the large-current generator and the CT leading-out end, then carry out the test, and recover after the test is finished. The operation process is complicated, so that the time consumption is long, the working efficiency is low and the labor intensity is high when the upflow test operation is carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fastener for cubical switchboard CT rises and flows experiment, its simple structure, safe and reliable, easy and simple to handle, effectual improvement work efficiency reduces working strength.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a wire clamp for a switch cabinet CT (current transformer) upwash test comprises a wire clamp body, wherein the wire clamp body is an A-shaped clamp consisting of two wire clamp arms, and further comprises two clamping pieces, a wire pressing nose and a camera fixing piece, one side of each clamping piece is provided with a connecting rod perpendicular to the clamping piece, two ends of the other side of each clamping piece are respectively provided with a bulge, the front ends of the inner sides of the wire clamp arms are respectively provided with a first through hole, the two clamping pieces are respectively arranged at the front ends of the inner sides of the two wire clamp arms, one side of each clamping piece is rotatably attached to the corresponding inner side of each wire clamp arm, the connecting rods of the clamping pieces rotatably penetrate through the corresponding first through holes and are fixedly connected with the corresponding wire clamp arms through first positioning pieces arranged on the connecting rods, one end of each connecting rod is connected with the middle part of one side of the corresponding clamping piece, and the other end of each connecting rod penetrates, one end of each of the wire pressing nose and the camera fixing piece is respectively connected with the other end of each of the two connecting rods in a rotating mode, and the wire pressing nose and the camera fixing piece are connected and fixed at any rotating position of the corresponding connecting rod through a second positioning piece.

Preferably, the wire clamp for the CT upwelling test of the switch cabinet is characterized in that the connecting rod is a threaded rod, first bolts are installed on the connecting rod in a threaded mode, the first bolts are screwed to be abutted to the corresponding wire clamp arms, the clamping piece can be fixedly connected with the corresponding wire clamp arms, and the first bolts form the first positioning pieces.

Preferably, a fastener for cubical switchboard CT rises and flows experiment in, all go back the screw thread on the connecting rod and install the second bolt, the one end of line ball nose and camera mounting all be equipped with the through-hole that the connecting rod corresponds, and pass through the through-hole with correspond the connecting rod corresponds and is connected, the one end of line ball nose and camera mounting all is located the correspondence between first bolt and the second bolt, screw up first bolt and second bolt can with line ball nose and camera mounting and correspondence the connecting rod is connected fixedly, the second bolt constitutes the second setting element.

Preferably, in the wire clamp for the CT current rise test of the switch cabinet, the wire pressing nose is an open copper nose.

Preferably, the wire clamp for the switch cabinet CT upflow test further comprises a U-shaped elastic member, the elastic member is disposed between the two wire clamp arms, an opening of the elastic member is disposed toward the front ends of the wire clamp arms, and one end of the elastic member is connected to the rear end of one of the clamping members.

Preferably, in the wire clamp for the CT current rise test of the switch cabinet, the clamping piece is an M-shaped copper sheet.

The utility model discloses a fastener for cubical switchboard CT rises to flow experimental beneficial effect is:

1. the plasticity is good, and the elastic deformation quantity is enough, so that the fastening requirement can be met;

2. the fastening effect is good, the temperature rise of the contact surface is small, and the relevant requirements of operation and use are met;

3. in addition, the thickness, the width and the contact point angle of the clamp opening of the clamp are respectively selected by considering the current-carrying capacity of the fastening clamp;

4. visual operation, so that the operation process is safer, more reliable, easier and more free;

5. the angle between the clamping pieces and the wire clamp arm can be adjusted according to actual requirements, so that the frame opening formed by the two clamping pieces is perpendicular to or parallel to the bolt.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic view of the wire clamp and the bolt when the clamping member is parallel to the wire clamp arm according to the present invention;

fig. 2 is another schematic view of the clamp of the present invention when the clamp is parallel to the clamp arm and the bolt is vertically connected;

FIG. 3 is a schematic view of the clamp of the present invention when the clamp is perpendicular to the clamp arm;

fig. 4 is another schematic view of the clamp of the present invention when the clamp is perpendicular to the clamp arm;

fig. 5 is a schematic structural view of the clamping member of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1-5 show a wire clamp for CT upflow test of switch cabinet, which comprises a wire clamp body, the wire clamp body is an a-shaped clamp composed of two wire clamp arms 1, and further comprises two clamping members 2, a wire pressing nose 3 and a camera fixing member 4, one side of the clamping member 2 is provided with a connecting rod 5 perpendicular to the clamping member, two ends of the other side are respectively provided with a protrusion, the front ends of the inner sides of the wire clamp arms 1 are respectively provided with a first through hole, the two clamping members 2 are respectively arranged at the front ends of the inner sides of the two wire clamp arms 1, one side of each clamping member is rotatably attached to the corresponding inner side of the wire clamp arm 1, the connecting rod 5 of the clamping member 2 rotatably penetrates through the corresponding first through hole and is fixedly connected to the corresponding wire clamp arm 1 through a first positioning member arranged on the connecting rod 5, one end of the connecting rod 5 is connected with the middle part of one side of the clamping piece 2 correspondingly, the other end of the connecting rod passes through the corresponding wire clamping arm 1, one ends of the wire pressing nose 3 and the camera fixing piece 4 are respectively connected with the other end of the connecting rod 5 in a rotating mode, and the connecting rod 5 is connected and fixed at any rotating position of the connecting rod through a second positioning piece and corresponds.

In the embodiment, the wire clamp body adopts the existing A-shaped clamp, the wire pressing nose 3 and the camera fixing piece 4 are respectively arranged at the front ends of the outer sides of the two wire clamp arms 1 of the clamp, the wire and the camera are respectively fixed through the wire pressing nose 3 and the camera fixing piece 4, and the real-time image information of a test part is obtained through the camera; simultaneously, all be equipped with connecting rod 5 in one side of holder 2 in this scheme, the one end and the holder 2 of connecting rod 5 are connected, the other end passes corresponding line arm lock 1 and is connected with line ball nose 3 or camera mounting 4, the one end of line ball nose 3 and camera mounting 4 rotates with the other end of corresponding connecting rod 5 respectively to be connected, and all be connected fixedly at its pivoted optional position through setting element and corresponding connecting rod 5, can adjust the position of the other end of line ball nose 3 and camera mounting 4 according to actual need.

In addition, in the scheme, the clamping pieces 2 are rotatably arranged on the inner sides of the corresponding wire clamping arms 1 and are fixed with the corresponding wire clamping arms 1 at any positions through the first positioning pieces, as shown in fig. 5, a groove matched with a nut of the hexagon bolt is formed between two protrusions of each clamping piece, and the two clamping pieces 2 form clamping openings corresponding to the nut of the hexagon bolt, so that the clamping openings can be clamped on the nut of the hexagon bolt, and the clamping openings can be tightly and tightly combined with the clamped hexagon nut; as shown in fig. 1-2, the clamp 2 is arranged in parallel with the wire clamp arm 1, so that the wire clamp can be fixed on the hexagon bolt at an angle perpendicular to the axis of the hexagon bolt; as shown in fig. 3 to 4, the clip 2 is disposed vertically in parallel with the clip arm 1, so that the clip can be fixed to the hexagon bolt at an angle parallel to the axis of the hexagon bolt.

Preferably, as another embodiment of the present invention, the connecting rod 5 is a threaded rod, the connecting rod 5 is provided with a first bolt 6 through threads, the first bolt 6 is screwed until it is abutted against the corresponding wire clamp arm 1, so that the clamping member 2 can be connected and fixed with the corresponding wire clamp arm 1, and the first bolt 6 constitutes the first positioning member; all go back the threaded mounting on connecting rod 5 and have second bolt 8, the one end of line ball nose 3 and camera mounting 4 all be equipped with the through-hole that connecting rod 5 corresponds, and pass through the through-hole with correspond connecting rod 5 corresponds the connection, the one end of line ball nose 3 and camera mounting 4 all is located the correspondence between first bolt 6 and the second bolt 8, screw up first bolt 6 and second bolt 8 can with line ball nose 3 and camera mounting 4 and corresponding connecting rod 5 is connected fixedly, second bolt 8 constitutes the second setting element.

In this embodiment, by setting the connecting rod 5 as a threaded rod and installing the first bolt 6 and the second bolt 8 on it with threads, the one end of the wire pressing nose 3 and the camera fixing part 4 are both located between the corresponding first bolt 6 and the second bolt 8, and the clamping part 2 and the corresponding wire pressing nose 3 or the camera fixing part 4 can be fixed on the corresponding wire clamping arm 1 by tightening the first bolt 6 and the second bolt 8.

Preferably, as another embodiment of the present invention, the wire pressing nose 3 is an open copper nose.

Preferably, as another embodiment of the present invention, the utility model discloses still include the elastic component 7 of U type, elastic component 7 sets up two between the line arm lock 1, and its opening orientation the front end setting of line arm lock 1, the one end of elastic component 7 and one of them the rear end of holder 2 is connected.

Preferably, as another embodiment of the present invention, the clamping member 2 is an M-shaped copper sheet.

In this embodiment, when the clamping member 2 is manufactured, the strip copper sheet may be stamped into an M shape, and the position between the two protrusions of the strip copper sheet forms the clamping portion of the clamping member 2, and the position between the clamping portions of the two clamping members 2 forms the clamping position.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. A wire clamp for a switch cabinet CT (current transformer) upwash test comprises a wire clamp body, wherein the wire clamp body is an A-shaped clamp consisting of two wire clamp arms (1), and the wire clamp is characterized by further comprising two clamping pieces (2), a wire pressing nose (3) and a camera fixing piece (4), one side of each clamping piece (2) is provided with a connecting rod (5) perpendicular to the clamping piece, two ends of the other side of each clamping piece are respectively provided with a bulge, the front ends of the inner sides of the wire clamp arms (1) are respectively provided with a first through hole, the two clamping pieces (2) are respectively arranged at the front ends of the inner sides of the two wire clamp arms (1), one side of each clamping piece is respectively rotatably attached to the inner sides of the corresponding wire clamp arms (1), the connecting rods (5) of the clamping pieces (2) rotatably penetrate through the corresponding first through holes, and are fixedly connected with the corresponding wire clamp arms (1) through first positioning pieces arranged on the connecting rods (5), the one end of connecting rod (5) with correspond one side middle part of holder (2) is connected, and its other end passes and corresponds line arm lock (1), the one end of line ball nose (3) and camera mounting (4) respectively with two the other end of connecting rod (5) rotates to be connected to all through the second setting element with correspond connecting rod (5) are connected fixedly at its pivoted optional position.

2. The cable clamp for the CT up-flow test of the switch cabinet as claimed in claim 1, wherein the connecting rods (5) are threaded rods, the connecting rods (5) are all threadedly provided with first bolts (6), the first bolts (6) are screwed until the first bolts (6) are abutted against the corresponding wire clamping arms (1), so that the clamping members (2) and the corresponding wire clamping arms (1) can be fixedly connected, and the first bolts (6) form the first positioning members.

3. The wire clamp for the CT up-flow test of the switch cabinet as claimed in claim 2, wherein a second bolt (8) is further installed on each connecting rod (5) in a threaded manner, through holes corresponding to the connecting rods (5) are formed in one ends of the wire pressing nose (3) and the camera fixing piece (4) and are correspondingly connected with the corresponding connecting rods (5) through the through holes, one ends of the wire pressing nose (3) and the camera fixing piece (4) are located between the corresponding first bolt (6) and the corresponding second bolt (8), the wire pressing nose (3) and the camera fixing piece (4) can be fixedly connected with the corresponding connecting rods (5) by screwing the first bolt (6) and the second bolt (8), and the second bolt (8) forms the second positioning piece.

4. A clamp for the CT up-flow test of a switchgear cabinet according to any of claims 1 to 3, characterized in that the clamp nose (3) is an open copper nose.

5. A clamp for a switch cabinet CT upflow test according to any of claims 1 to 3, further comprising a U-shaped elastic member (7), wherein said elastic member (7) is disposed between two of said wire clamp arms (1), the opening of said elastic member is disposed towards the front end of said wire clamp arms (1), and one end of said elastic member (7) is connected with the rear end of one of said clamping members (2).

6. A clamp for a CT up-flow test of a switchgear cabinet according to any of claims 1 to 3, characterized in that said clamping member (2) is a M-shaped copper sheet.