CN107039864B

CN107039864B - Adjustable short-circuit piece

Info

Publication number: CN107039864B
Application number: CN201710411795.9A
Authority: CN
Inventors: 宗翔; 刘培慧; 杨国涛; 袁新喜; 胡彦雯; 丁倩; 卓小飞; 李胜强; 陈腾渊; 罗东; 郝雨
Original assignee: State Grid Corp of China SGCC; Liuan Power Supply Co of State Grid Anhui Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Liuan Power Supply Co of State Grid Anhui Electric Power Co Ltd
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2023-04-21
Anticipated expiration: 2037-06-05
Also published as: CN107039864A

Abstract

The invention relates to the field of power test equipment, in particular to an adjustable short circuit piece, which comprises a short circuit piece unit and an insulating shell wrapped outside the short circuit piece unit, wherein the short circuit piece unit comprises a first short circuit piece and a second short circuit piece, the first short circuit piece and the second short circuit piece are arranged at intervals along the length direction of the insulating shell, connecting columns for connecting terminal rows are respectively arranged at the positions of the ends of the first short circuit piece and the second short circuit piece, which are far away from each other, connecting holes are respectively arranged at the positions of the ends of the first short circuit piece and the second short circuit piece, which are close to each other, a notch for exposing the connecting holes is formed in the insulating shell, the first short circuit piece and the second short circuit piece are connected through a transition connecting piece, connecting pins are respectively arranged at the two ends of the transition connecting piece, an insulating layer is coated or wrapped on the transition connecting piece, and the transition connecting piece is arranged on the insulating shell.

Description

Adjustable short-circuit piece

Technical Field

The invention relates to the field of power test equipment, in particular to an adjustable short-connection sheet.

Background

In the design and construction of the transformer substation, the transformer substation is formed by respectively combining parts such as an incoming line, a main transformer high voltage, a main transformer low voltage outgoing line and the like, and each part is called an interval. For example, the line-in interval is formed by combining a line side ground knife, a line side disconnecting link, a switch side ground knife, a switch, a bus side disconnecting link and a bus ground knife from a cable head at the end of a line, and all electrical equipment forms the line-in interval. Typically also transformer spacing, bus spacing, capacitor spacing, etc. All new intervals need to be checked after construction is completed before they can be put into use.

When the extension interval of the transformer substation is checked and accepted, a remote control transmission test needs to be completed, and the remote control refers to a technology for realizing remote opening/closing of a switch or a disconnecting link by issuing an opening/closing instruction through a local background computer or a dispatching monitoring system of the transformer substation. This is one of the technical requirements that modern automation substations must possess. Such problems are encountered during the actual acceptance process: the bus is electrified to run, and the disconnecting link cannot be opened and closed practically. Thus, the remote control transmission test cannot be completed according to the conventional method. But the verification of the remote control loop can be accomplished by means of analog measurement, except that the knife switch itself does not act. The specific implementation process is as follows: when the remote control is switched off, four people are needed to cooperate, one person operates on the indoor monitoring computer and gives a remote control instruction, and the other three people work and cooperate at the switch mechanism box: a person uses the cable core wire short-circuit signal common end and the disconnecting link closing signal terminal to simulate the disconnecting link closing position; the remote control loop is measured by one person by using the on-off gear of the universal meter, the remote control loop is conducted at the moment of issuing a remote control instruction, the universal meter can emit beep, and if the remote control loop is incorrect, the beep cannot be heard; and the handheld interphone of one person can communicate with the person who gives the remote control instruction indoors. When the switch is opened by remote control, the switch is actually at the switch-opening position, so that a switch position signal does not need to be simulated, and one person can be saved. Because the loop is conducted only at one instant given by the remote control command, the remote control test can be completed only by the acquiescing cooperation of all people. The person responsible for simulating the closing position of the disconnecting link cannot have a little relaxation in the whole process when shorting the terminal, otherwise, the remote control fails due to the flickering of the position of the disconnecting link. The five monitoring systems of the background, the main call, the standby call, the D5000 and the special line are remotely controlled once, so that the whole remote control of one disconnecting link is very time-consuming, the operation difficulty of the whole process is high, the labor and time are wasted, and the working efficiency is very low.

Disclosure of Invention

The invention aims to provide an adjustable short circuit piece which is labor-powered and improves working efficiency.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an adjustable short circuit piece, includes short circuit piece unit and parcel at the outside insulating housing of short circuit piece unit, and the short circuit piece unit includes first short circuit piece and second short circuit piece, and first short circuit piece, second short circuit piece are along the length direction interval arrangement of insulating housing, and the end department that first short circuit piece and second short circuit piece kept away from each other is provided with the spliced pole that is used for connecting the terminal row respectively, and the end department that first short circuit piece and second short circuit piece are close to each other is provided with the connecting hole respectively, is equipped with the breach that is used for revealing the connecting hole on the insulating housing, first short circuit piece and second short circuit piece be connected through the transition connection piece, the both ends of transition connection piece are provided with the connecting pin respectively, the outside coating of transition connection piece or parcel have the insulating layer, and the transition connection piece is arranged in the insulating housing, the connecting pin passes the breach and inserts in the connecting hole, first short circuit piece, second short circuit piece, spliced pole, transition connection piece and connecting pin are made by electrically conductive material.

By adopting the technical scheme, the connecting pins at the two ends of the transition connecting piece are respectively inserted into the connecting holes on the first short connecting piece and the second short connecting piece, and the connecting pins are connected into a conductor, and then the connecting columns on the first short connecting piece and the second short connecting piece are respectively connected with the signal public end and the disconnecting link closing signal terminal, so that the simulation disconnecting link is in a closing position. According to the invention, the short-circuit piece is used for replacing a manual short-circuit cable core wire short-circuit signal common end and a disconnecting link closing signal terminal, so that the labor is saved. And the short connection sheet has higher stability and smaller error rate compared with manual short connection, thereby further improving the working efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a cross-sectional view of fig. 1.

Detailed Description

The utility model provides an adjustable short circuit piece, includes short circuit piece unit 10 and wraps up at the outside insulating housing 20 of short circuit piece unit 10, short circuit piece unit 10 includes first short circuit piece 11 and second short circuit piece 12, first short circuit piece 11, second short circuit piece 12 is along the length direction interval arrangement of insulating housing 20, first short circuit piece 11 and second short circuit piece 12 are provided with the spliced pole 14 that is used for connecting the terminal row respectively in the end department that keeps away from each other, first short circuit piece 11 and second short circuit piece 12 are provided with connecting hole 15 respectively in the end department that is close to each other, be equipped with the breach 21 that is used for exposing connecting hole 15 on the insulating housing 20, first short circuit piece 11 and second short circuit piece 12 connect through transition piece 13, the both ends of transition piece 13 are provided with connecting pin 131 respectively, transition piece 13's outside coating or parcel have the insulating layer, transition piece 13 is arranged on insulating housing 20, connecting pin 131 pass breach 21 insert in connecting hole 15, first short circuit piece 11, second short circuit piece 12, spliced pole 14, transition piece 13 and connecting pin 131 are all made by electrically conductive material.

The terminal row is a terminal row provided with a signal public end and a disconnecting link closing signal terminal, when the electric connector is used, the connecting columns 14 on the first short connecting piece 11 and the second short connecting piece 12 are connected with the signal public end and the disconnecting link closing signal terminal respectively, then the connecting pins 131 at two ends of the transition connecting piece 13 are inserted into the connecting holes 15 on the first short connecting piece 11 and the second short connecting piece 12 respectively, and the first short connecting piece 11, the second short connecting piece 12 and the transition connecting piece 13 are connected into a conductor to realize the signal public end and the disconnecting link closing signal terminal, and the disconnecting link is simulated to be in a closing position. After the test is completed, the transition connecting sheet 13 is disconnected, and then the first short connecting sheet 11 and the second short connecting sheet 12 are removed. According to the invention, the short circuit piece is used for replacing the manual short circuit signal public end and the disconnecting link closing signal terminal, so that the manpower is saved. And the short connection sheet has higher stability and smaller error rate compared with manual short connection, thereby further improving the working efficiency.

The insulating housing 20 is provided with a fixing unit for clamping the terminal block 30. The insulating shell 20 is fixed on the terminal strip provided with the disconnecting link closing signal terminal, so that the short-circuit connection sheet is easily fixed, and the short-circuit connection and the disassembly are convenient.

The first and second

short tabs

11 and 12 are coated or wrapped with an insulating layer on the outside. The surface of the first short tab 11/the second short tab 12 can be coated with insulating paint or wrapped with insulating rubber, and the invention is preferably in the latter scheme, so that the insulating effect is better and the safety performance is higher. The insulating layer on the surface of the transition piece 13 can also be coated insulating paint or wrapped insulating rubber.

The first short tab 11 and the second short tab 12 can slide freely along the length of the insulating shell 20, more than two connecting holes 15 are formed in the first short tab 11 and/or the second short tab 12, and a plurality of connecting holes 15 are formed at intervals along the length direction of the first short tab 11 and/or the second short tab 12. The first and

second shorting tabs

11, 12 are both received within the insulating housing 20 when the shorting tabs are not in use, allowing for a reduction in the overall device volume. When the electric knife switch is used, the first short tab 11 and the second short tab 12 are stretched to proper positions, and the connecting pin 131 is clamped in the connecting hole 15, so that the first short tab 11 and the second short tab 12 are lengthened or shortened, the short tabs can be connected between the signal public end and the switch closing signal terminal, and the application range of the short tabs is enlarged.

The fixing unit is a U-shaped clamping groove 40, and the opening size of the U-shaped clamping groove 40 is adjustable. The U-shaped clamping groove 40 comprises a first L-shaped folded plate 41, a second L-shaped folded plate 41 and a locking bolt 43 for connecting the two, a strip-shaped hole 412 which is arranged along the length direction of the first L-shaped folded plate 41 is formed in a first transverse plate 411 of the first L-shaped folded plate 41, a flat opening groove 422 is formed in a second transverse plate 421 of the second L-shaped folded plate 42, the groove depth of the flat opening groove 422 is arranged along the length direction of the second transverse plate 421, the first transverse plate 411 is arranged in the flat opening groove 422 and can slide relatively, a hole 423 for exposing the strip-shaped hole 412 is formed in the second transverse plate 421, and the locking bolt 43 sequentially penetrates through the hole 423 and the strip-shaped hole 412 and is then fixed on the insulating shell 20. The holes 423 can be round holes, bar-shaped holes or bar-shaped grooves. The first transverse plate 411 is pulled to a proper position, the U-shaped clamping groove 40 is clamped on the terminal strip, then the locking bolt 43 is screwed down, the short tab can be fixed, the short tab can be effectively prevented from falling off the terminal strip, and the reliability of connection is improved.

Claims

1. An adjustable shorting tab, characterized by: including short circuit piece unit (10) and parcel at the outside insulating shell (20) of short circuit piece unit (10), short circuit piece unit (10) include first short circuit piece (11) and second short circuit piece (12), first short circuit piece (11), second short circuit piece (12) are along the length direction interval arrangement of insulating shell (20), the end department that first short circuit piece (11) and second short circuit piece (12) kept away from each other is provided with spliced pole (14) that are used for connecting terminal strip (30) respectively, the end department that first short circuit piece (11) and second short circuit piece (12) are close to each other is provided with connecting hole (15) respectively, be equipped with on insulating shell (20) and be used for exposing breach (21) of connecting hole (15), first short circuit piece (11) and second short circuit piece (12) connect through transition piece (13), the both ends of transition piece (13) are provided with connecting pin (131) respectively, the outside coating of transition piece (13) or have insulating layer, transition piece (13) are arranged on insulating shell (20), connecting pin (131) pass and are put in connecting hole (21) and are connected in connecting hole (14), second short circuit piece (12) are connected to the breach (13) respectively The transition connecting piece (13) and the connecting pin (131) are made of conductive materials;

the insulating shell (20) is provided with a fixing unit for clamping the terminal strip (30);

the first short connecting piece (11) and the second short connecting piece (12) can slide freely along the length of the insulating shell (20), more than two connecting holes (15) are formed in the first short connecting piece (11) and/or the second short connecting piece (12), and a plurality of connecting holes (15) are formed in the first short connecting piece (11) and/or the second short connecting piece (12) at intervals along the length direction;

the fixing unit is a U-shaped clamping groove (40), and the opening size of the U-shaped clamping groove (40) is adjustable;

u type draw-in groove (40) include first L type folded plate (41), second L type folded plate (42) and connect locking bolt (43) of both, be equipped with bar hole (412) that arrange along its length direction on first diaphragm (411) of first L type folded plate (41), be equipped with flat mouth groove (422) on second diaphragm (421) of second L type folded plate (42), flat mouth groove (422) groove depth is arranged along the length direction of second diaphragm (421), but first diaphragm (411) are arranged in flat mouth groove (422) and between the two relative slip, second diaphragm (421) on still be equipped with hole (423) that expose bar hole (412), locking bolt (43) pass hole (423) and bar hole (412) in proper order and fix on insulating shell (20) afterwards.