CN107039864B - adjustable short link - Google Patents

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 link

technical field

The invention relates to the field of electric testing equipment, in particular to an adjustable shorting piece.

Background technique

In the design and construction of the substation, it will be combined according to the incoming line, main transformer high voltage, main transformer low voltage, main transformer, low voltage outgoing line, etc., and each part is called a compartment. For example, the incoming line interval starts from the cable head at the end of the line, and is composed of line-side ground knife, line-side knife gate, switch-side ground knife, switch, busbar side knife gate, and busbar ground knife. All electrical equipment constitutes the incoming line interval. There are usually transformer intervals, busbar intervals, capacitor intervals, etc. All new compartments are subject to acceptance checks after construction is complete before they can be put into use.

The remote control transmission test needs to be completed when the substation expansion interval is accepted. Remote control refers to the technology of realizing remote opening/closing switches or knife switches by issuing opening/closing instructions through the local background computer or dispatching monitoring system of the substation. This is one of the technical requirements that modern automated substations must have. During the actual acceptance process, there will be such a problem: the busbar is running with electricity, and the knife switch cannot be actually opened and closed. In this case, it is impossible to complete the remote control transmission test according to the conventional method. However, the verification of the remote control circuit can be completed by analog measurement, but the knife switch itself does not operate. The specific implementation process is as follows: when the remote control is opened, four people are required to cooperate, one person operates on the indoor monitoring computer and gives the remote control command, and the other three people work together at the knife switch mechanism box: one person short-circuits the signal common terminal with the cable core wire. The knife switch close signal terminal is used to simulate the knife switch close position; one person uses the on-off gear of the multimeter to measure the remote control circuit. If it is correct, the sound of "beep" cannot be heard; there is also a person holding a walkie-talkie to talk to the person who gave the remote control command indoors. When the remote control is opened, since the knife switch is actually in the opening position, there is no need to simulate the position signal of the knife switch, which can save one person. Since the circuit is only turned on at the moment when the remote control command is issued, it requires the tacit cooperation of everyone to complete a remote control test. The person in charge of simulating the closing position of the knife switch should not be a little loose when shorting the terminals, otherwise the remote control will fail due to the flickering of the knife switch position. And because the five monitoring systems of the background, main adjustment, backup adjustment, D5000, and special line all need to be remotely controlled once, it is very time-consuming to complete all the remote control of a knife switch, and the operation of the whole process is difficult, labor-intensive and time-consuming. very low.

Contents of the invention

The purpose of the present invention is to provide a manpower and adjustable shorting piece which improves working efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions: an adjustable shorting piece, comprising a shorting piece unit and an insulating shell wrapped on the outside of the shorting piece unit, the shorting piece unit includes a first shorting piece and a shorting piece The second shorting piece, the first shorting piece and the second shorting piece are arranged at intervals along the length direction of the insulating case, the ends of the first shorting piece and the second shorting piece are respectively provided with terminals for connecting Connecting posts in a row, connecting holes are respectively provided at the ends of the first shorting piece and the second shorting piece close to each other, the insulating shell is provided with a gap for exposing the connecting hole, the first shorting piece and the second shorting piece The two shorting pieces are connected through the transition piece, the two ends of the transition piece are respectively provided with connection pins, the outside of the transition piece is coated or wrapped with an insulating layer, the transition piece is placed on the insulating shell, and the connection pin passes through the The gap is inserted in the connecting hole, and the first shorting piece, the second shorting piece, the connecting post, the transitional connecting piece and the connecting pin are all made of conductive material.

Due to the adoption of the above technical scheme, the connecting pins at both ends of the transition connecting piece are respectively inserted into the connecting holes on the first shorting piece and the second shorting piece, and the three are connected to form a conductor, and then the first shorting piece and the second shorting piece are connected together. The connecting columns on the two shorting pieces are respectively connected with the signal common terminal and the switch close signal terminal, so as to realize the simulation of the close position of the knife switch. The present invention uses a shorting piece instead of manually shorting the cable core wires to short-circuit the signal common end and the knife switch closing signal terminal, saving manpower. Moreover, the shorting piece has higher stability and lower error rate than manual shorting, thereby further improving work efficiency.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is an exploded view of Figure 1;

FIG. 3 is a sectional view of FIG. 1 .

Detailed ways

An adjustable shorting piece, comprising a shorting piece unit 10 and an insulating shell 20 wrapped outside the shorting piece unit 10, the shorting piece unit 10 includes a first shorting piece 11 and a second shorting piece 12, the first A shorting piece 11 and a second shorting piece 12 are arranged at intervals along the length direction of the insulating case 20, and the ends of the first shorting piece 11 and the second shorting piece 12 are respectively provided with terminals for connecting terminal blocks. Connecting column 14, first shorting piece 11 and second shorting piece 12 are respectively provided with connecting hole 15 at the end that is close to each other, is provided with breach 21 for exposing connecting hole 15 on insulating shell 20, described first The shorting link 11 and the second shorting link 12 are connected through the transition connecting piece 13, and the two ends of the transition connecting piece 13 are respectively provided with connecting pins 131, and the exterior of the transition connecting piece 13 is coated or wrapped with an insulating layer, and the transition connection The sheet 13 is placed on the insulating shell 20, the connecting pin 131 is inserted in the connecting hole 15 through the gap 21, the first shorting piece 11, the second shorting piece 12, the connecting column 14, the transition connecting piece 13 and the connecting pin 131 are made of conductive material.

The terminal block refers to the terminal block provided with the signal common terminal and the knife close signal terminal. The gate signal terminals are connected, and then the connecting pins 131 at both ends of the transition connecting piece 13 are respectively inserted into the connecting holes 15 on the first shorting piece 11 and the second shorting piece 12, the first shorting piece 11, the second shorting piece The two shorting pieces 12 and the transition connecting piece 13 are connected to form an electrical conductor to realize the signal common terminal and the closing signal terminal of the knife switch, simulating the closing position of the knife switch. After the test is completed, the transition connecting piece 13 is disconnected, and then the first shorting piece 11 and the second shorting piece 12 are removed. The present invention uses the shorting piece to replace the manual shorting signal common terminal and the knife switch closing signal terminal, saving manpower. Moreover, the shorting piece has higher stability and lower error rate than manual shorting, thereby further improving work efficiency.

The insulating shell 20 is provided with a fixing unit for clamping the terminal block 30 . The insulating case 20 is fixed on the terminal block provided with the signal terminal of the knife close position, so as to realize the easy fixing of the shorting piece, and facilitate the shorting and removal.

The outsides of the first shorting piece 11 and the second shorting piece 12 are coated or wrapped with an insulating layer. The surface of the first shorting piece 11/second shorting piece 12 can be coated with insulating varnish or wrapped with insulating rubber. The latter solution is preferred in the present invention, which has better insulation effect and higher safety performance. The insulating layer on the surface of the transition piece 13 can also be coated with insulating varnish or wrapped with insulating rubber.

Both the first shorting piece 11 and the second shorting piece 12 can slide freely along the length of the insulating shell 20, and the first shorting piece 11 and/or the second shorting piece 12 are provided with more than two shorting pieces. Connection holes 15 , a plurality of connection holes 15 are arranged at intervals along the length direction of the first shorting piece 11 and/or the second shorting piece 12 . When the shorting piece is not in use, both the first shorting piece 11 and the second shorting piece 12 are stored in the insulating case 20, which can reduce the volume of the whole device. When in use, the first shorting piece 11 and the second shorting piece 12 are stretched to a suitable position, and the connecting pin 131 is stuck in the connecting hole 15, thereby realizing the first shorting piece 11 and the second shorting piece The elongation or shortening of 12 ensures that the shorting piece can be connected between the signal common terminal and the switch closing signal terminal, thereby expanding the adaptable range of the shorting piece.

The fixing unit is a U-shaped card slot 40, and the opening size of the U-shaped card slot 40 is adjustable. The U-shaped card slot 40 includes a first L-shaped folded plate 41, a second L-shaped folded plate 41 and a locking bolt 43 connecting the two. The first horizontal plate 411 of the first L-shaped folded plate 41 is provided with The strip-shaped hole 412 arranged along its length direction, the second horizontal plate 421 of the second L-shaped folding plate 42 is provided with a flat groove 422, and the groove depth of the flat groove 422 is arranged along the length direction of the second horizontal plate 421, The first horizontal plate 411 is placed in the flat slot 422 and can slide relatively between the two. The second horizontal plate 421 is also provided with a hole 423 exposing the strip-shaped hole 412. The locking bolts 43 are in turn Be fixed on the insulating case 20 after passing through the hole 423 and the strip hole 412. The hole 423 can be a round hole or a strip-shaped hole or a strip-shaped groove. Pull the first horizontal plate 411 to a suitable position, clamp the U-shaped card slot 40 on the terminal block, and then tighten the locking bolt 43 to realize the fixing of the shorting piece, which can effectively prevent the shorting piece from falling off the terminal block. Improve connection reliability.

Claims (1)

1. An adjustable shorting piece, characterized in that it includes a shorting piece unit (10) and an insulating shell (20) wrapped outside the shorting piece unit (10), and the shorting piece unit (10) includes the first A shorting piece (11) and a second shorting piece (12), the first shorting piece (11) and the second shorting piece (12) are arranged at intervals along the length direction of the insulating shell (20), the first shorting piece Connecting posts (14) for connecting terminal blocks (30) are respectively provided at the ends of the tabs (11) and the second shorting tabs (12) away from each other, the first shorting tab (11) and the second shorting tab Connecting holes (15) are respectively provided at the ends of the pieces (12) close to each other, and a notch (21) for exposing the connecting holes (15) is provided on the insulating case (20), and the first shorting piece (11) ) and the second shorting piece (12) are connected through the transition piece (13), the two ends of the transition piece (13) are respectively provided with connection pins (131), the outer coating of the transition piece (13) or Wrapped with an insulating layer, the transition connecting piece (13) is placed on the insulating shell (20), the connecting pin (131) is inserted into the connecting hole (15) through the gap (21), the first shorting piece (11), The second shorting piece (12), the connecting post (14), the transition connecting piece (13) and the connecting pin (131) are all made of conductive material; The insulating case (20) is provided with a fixing unit for clamping the terminal block (30); Both the first shorting piece (11) and the second shorting piece (12) can slide freely along the length of the insulating shell (20), the first shorting piece (11) and/or the second shorting piece (12) is provided with more than two connecting holes (15), and a plurality of connecting holes (15) are arranged at intervals along the length direction of the first shorting piece (11) and/or the second shorting piece (12); The fixing unit is a U-shaped card slot (40), and the opening size of the U-shaped card slot (40) is adjustable; The U-shaped card slot (40) includes a first L-shaped folded plate (41), a second L-shaped folded plate (42) and a locking bolt (43) connecting the two, the first L-shaped folded plate (41 ) is provided with a strip-shaped hole (412) arranged along its length direction on the first horizontal plate (411), and a flat groove (422) is provided on the second horizontal plate (421) of the second L-shaped folding plate (42) ), the groove depth of the flat groove (422) is arranged along the length direction of the second horizontal plate (421), the first horizontal plate (411) is placed in the flat groove (422) and can slide relatively between them, so The second horizontal plate (421) is also provided with a hole (423) exposing the strip hole (412), and the locking bolt (43) passes through the hole (423) and the strip hole (412) in turn. Be fixed on the insulating shell (20).

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