CN203056338U - A secondary short-circuit sealing device for substation voltage transformers - Google Patents

Abstract

A secondary short circuit wire sealing device for a voltage transformer of a transformer substation relates to the field of transformer substation maintenance, in particular to a short circuit wire sealing device for the voltage transformer. The utility model provides a current voltage transformer short circuit seal the chuck can't press from both sides on insulating secondary line core of being qualified for the next round of competitions, must tear the problem of head open when installing the short circuit seal. Every terminal row side plug comprises a bolt, first fixation nut and second fixation nut, and two fixation nuts all close on the bolt soon, and three-phase short circuit seal line comprises three short circuit seal line inserted sheet, short circuit seal line and ground terminal, and wherein three short circuit seal line inserted sheet all links to each other with ground terminal through the short circuit seal line, and a short circuit seal line inserted sheet is corresponding with a terminal row side plug, short circuit seal line inserted sheet inserts between the first fixation nut and the second fixation nut of corresponding terminal row side plug, first fixation nut and second fixation nut compress tightly short circuit seal line inserted sheet. The utility model is suitable for an overhaul of transformer substation's voltage transformer.

Description

A secondary short-circuit sealing device for substation voltage transformers

technical field

The utility model relates to the field of substation maintenance, in particular to a short circuit sealing device for a voltage transformer.

Background technique

For inspection and maintenance of voltage transformers in substations, it is necessary to install short-circuit sealing wires at the terminal block of the secondary outgoing line. Since the wires are fully insulated and there is no place for installing short-circuit sealing wire chucks, the two-circuit sealing wires must be installed every time the short-circuit sealing wires are installed. The secondary wire head is removed from the terminal block, and then the short-circuit sealing wire is connected to the removed wire end wire core. The operation is cumbersome, and it is easy to cause phase connection error during recovery, which brings inconvenience and safety hazards to the operation.

Utility model content

The purpose of the utility model is to solve the problem that the clamp of the existing voltage transformer short-circuit sealing line cannot be clamped on the insulated secondary outgoing line core, and the head must be disassembled when installing the short-circuit sealing line. Substation voltage transformer secondary short-circuit sealing device.

The utility model is composed of three terminal row side plugs and three-phase short-circuit sealing wires.

Each terminal block side plug is composed of a bolt, a first fixing nut and a second fixing nut, wherein the first fixing nut and the second fixing nut are both screwed on the bolt,

The three-phase short-circuit seal is composed of three short-circuit seal inserts, short-circuit seal and grounding terminal, among which three short-circuit seal inserts are connected to the ground terminal through short-circuit seal, one short-circuit seal insert is connected to a Corresponding to the side plug, the short-circuit sealing wire insertion piece is inserted between the first fixing nut and the second fixing nut of the corresponding terminal block side plug, and the first fixing nut and the second fixing nut connect the short-circuit sealing wire insertion piece Press tight.

When the device described in the utility model is used in practice, the three terminal row side plugs are respectively fixed on the three-phase terminals of the terminal row of the voltage transformer, and when the voltage transformer of the substation is overhauled, it is only necessary to short-circuit the three-phase The three short-circuit sealing wire inserts of the sealing wire are respectively connected to the three terminal row side plugs to realize the electrical connection of the short-circuit sealing wire, thereby achieving the purpose of not having to disassemble the head when installing the short-circuit sealing wire. The above-mentioned substation voltage transformer secondary short-circuit sealing device is convenient and simple to operate.

Description of drawings

Fig. 1 is a schematic structural view of a secondary short-circuit sealing device for a substation voltage transformer described in Embodiment 1;

Fig. 2 is a schematic structural view of the three-phase short-circuit sealing line described in the first embodiment.

Detailed ways

Specific embodiment 1: Referring to Fig. 1 and Fig. 2 to illustrate this embodiment, a substation voltage transformer secondary short-circuit sealing device described in this embodiment is composed of three terminal block side plugs and a three-phase short-circuit sealing line ,

Each terminal block side plug is composed of a bolt 1-1, a first fixing nut 1-2 and a second fixing nut 1-3, wherein the first fixing nut 1-2 and the second fixing nut 1-3 are screwed on Bolt 1-1 on,

The three-phase short-circuit seal is composed of three short-circuit seal inserts 2-1, short-circuit seal 2-2 and grounding terminal 2-3, wherein the three short-circuit seal inserts 2-1 pass through the short-circuit seal 2-2 Connected to the ground terminal 2-3, a short-circuit sealing line insert 2-1 corresponds to a terminal block side plug, and the short-circuit sealing line insert 2-1 is inserted into the first fixing nut 1 of the corresponding terminal block side plug Between -2 and the second fixing nut 1-3, the first fixing nut 1-2 and the second fixing nut 1-3 compress the short-circuit sealing wire insertion piece 2-1.

When the device described in this embodiment is used in practice, the three terminal block side plugs are respectively fixed on the three-phase terminals of the terminal block of the voltage transformer. The three short-circuit sealing wire inserts 2-1 of the sealing wire are respectively connected to the three terminal block side plugs, so as to realize the electrical connection of the short-circuit sealing wire.

Embodiment 2: The difference between this embodiment and the secondary short-circuit sealing device of a substation voltage transformer described in Embodiment 1 is that the three short-circuit sealing inserts 1-1 are all U-shaped inserts. piece.

Claims (2)

1. A substation voltage transformer secondary short-circuit sealing device is characterized in that it is composed of three terminal block side plugs and a three-phase short-circuit sealing line, Each terminal block side plug consists of a bolt (1-1), the first fixing nut (1-2) and the second fixing nut (1-3), in which the first fixing nut (1-2) and the second fixing nut The nuts (1-3) are all screwed on the bolts (1-1), The three-phase short-circuit seal is composed of three short-circuit seal inserts (2-1), short-circuit seal (2-2) and grounding terminal (2-3), of which three short-circuit seal inserts (2-1) They are all connected to the grounding terminal (2-3) through the short-circuit sealing wire (2-2), and one short-circuit sealing wire insertion piece (2-1) corresponds to a terminal block side plug, and the short-circuit sealing wire insertion piece (2- 1) Insert between the first fixing nut (1-2) and the second fixing nut (1-3) of the corresponding terminal block side plug, the first fixing nut (1-2) and the second fixing nut ( 1-3) Press the short-circuit seal (2-1) tightly. 2. A secondary short-circuit sealing device for substation voltage transformers according to claim 1, characterized in that the three short-circuit sealing inserts (1-1) are all U-shaped inserts.

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