CN105390831B - Secondary outlet sleeve for quick-disconnect switch of voltage transformer and connecting method - Google Patents

Abstract

The invention discloses a secondary outlet sleeve for a quick release switch of a voltage transformer and a connection method thereof, and relates to a sleeve and a connection method, in particular to a secondary outlet sleeve and a connection method for a quick release switch of a voltage transformer. The present invention solves the problem that the existing secondary outgoing line installation and short circuit sealing operation is complex and easily leads to wrong phase connection. The invention comprises an insulating jacket, a thermal insulation inner jacket and an auxiliary handle. The insulating jacket is set on the thermal insulation jacket, the outer wall of the thermal insulation inner jacket is bonded to the inner wall of the insulating inner jacket, and the insulating jacket and the thermal insulation inner jacket form an insulating sleeve. , the auxiliary handle is arranged on the outer wall of the insulating jacket. The invention belongs to the field of power systems.

Description

A secondary outlet sleeve for quick opening switch of voltage transformer and connection method

technical field

The invention relates to a sleeve and a connection method, in particular to a secondary outlet sleeve for a voltage transformer quick opening switch and a connection method, belonging to the field of power systems.

Background technique

When the voltage transformer of the substation is overhauled, it is necessary to install a short-circuit sealing wire on the secondary outlet of the quick-opening switch. Since the wire is a ring insulation sheath, there is no place reserved for installing a short-circuit sealing wire clamp. Every time a short-circuit sealing wire is installed, the short-circuit sealing wire must be The secondary wire head is disassembled from the quick-open switch, and the three-phase wires are short-circuited to seal the wires to connect the joints. The operation is complicated, which easily leads to wrong phase connections and brings safety hazards to the operation of the equipment.

Contents of the invention

In order to solve the problem that the existing secondary outgoing line installation is complicated in short-circuit sealing operation and easily leads to wrong phase connection, the present invention further proposes a secondary outgoing line sleeve and a connection method for a quick opening switch of a voltage transformer.

The technical solution adopted by the present invention to solve the above problems is: the sleeve of the present invention includes an insulating jacket, a thermal insulation inner jacket and an auxiliary handle, the insulating jacket is set on the thermal insulation inner jacket, the outer wall of the thermal insulation inner jacket and the inner side of the insulating inner jacket The walls are bonded together, the insulating jacket and the thermal insulation inner jacket form an insulating sleeve, and the auxiliary handle is arranged on the outer wall of the insulating jacket.

The concrete steps of method of the present invention are as follows:

Step 1. Peel off the insulating sheath of the secondary outlet of the voltage transformer secondary quick release switch and the three phases respectively to expose the wire core;

Step 2: Set one insulating sleeve outside each wire core of the secondary outlet of the secondary quick opening switch of the voltage transformer. The length of the insulating sleeve is longer than that of the secondary quick opening switch of the voltage transformer. The wire core part of the wire;

Step 3: Fix and connect each wire core of the secondary outgoing line of the secondary quick opening switch of the voltage transformer to the terminal block respectively.

The beneficial effects of the present invention are: the present invention provides insulation protection for the secondary wiring when the voltage transformer is in normal operation, and when the voltage transformer is overhauled, when the secondary outlet of the quick-opening switch needs to be installed with a short-circuit seal, the insulation The jacket is lifted upwards to expose the core of the secondary outgoing line and the short-circuit sealing line can be installed.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention, Fig. 2 is a schematic diagram of the overall structure of the present invention after the compression sleeve is removed, Fig. 3 is a schematic diagram of the installation position of the insulating sleeve when the voltage transformer is in normal operation, and Fig. 4 is the overhaul of the voltage transformer Schematic diagram of the position when the insulating sleeve is lifted.

Detailed ways

Specific embodiment 1: This embodiment is described in conjunction with Fig. 1 to Fig. 2. A secondary outlet sleeve for a quick opening switch of a voltage transformer described in this embodiment includes an insulating outer casing 1, an insulating inner casing 2 and an auxiliary handle 3. The insulating jacket 1 is set on the insulating inner jacket 2, the outer wall of the insulating inner jacket 2 is bonded to the inner wall of the insulating inner jacket 1, the insulating jacket 1 and the insulating inner jacket 2 form an insulating sleeve, and the auxiliary handle 3 is set on the insulating sleeve. On the outer wall of jacket 1.

Specific embodiment two: This embodiment is described in conjunction with Fig. 1 and Fig. 2. The auxiliary handle 3 used for the secondary outlet sleeve of the voltage transformer quick-disconnect switch described in this embodiment is a strip-shaped elastic strip, and the elastic The upper end of the batten is fixedly connected with the outer wall of the insulating jacket 1 . Other components and connections are the same as those in the first embodiment.

Specific embodiment three: This embodiment is described in conjunction with Fig. 1 and Fig. 2. A secondary outlet sleeve for a voltage transformer quick-opening switch described in this embodiment also includes a compression sleeve 4, and the compression sleeve 4 is set On insulating jacket 1. After the pressing sleeve 4 is fitted on the insulating sleeve, the auxiliary handle 3 is pressed tightly against the outer wall of the insulating jacket 1 . Other compositions and connections are the same as those in Embodiment 1 or 2.

Specific Embodiment 4: This embodiment is described in conjunction with Fig. 1 and Fig. 2. A secondary outlet sleeve for a voltage transformer quick-opening switch described in this embodiment is characterized in that: the insulating outer sleeve 1 and the thermal insulation inner sleeve 2 The length is 10cm to 50cm. With such arrangement, the length of the insulating outer jacket 1 and the thermal insulation inner jacket 2 can completely wrap the wire core. Other components and connections are the same as those in the first embodiment.

Specific embodiment five: This embodiment is described in conjunction with Fig. 3 and Fig. 4. A connection method for the secondary outlet of the voltage transformer quick opening switch described in this embodiment is realized through the following steps:

Step 1. Peel off the insulating sheath of the secondary outlets of the secondary quick-opening switch of the voltage transformer and the three phases respectively to expose the wire core;

Step 2: Set one insulating sleeve outside each wire core of the secondary outlet 5 of the secondary quick opening switch of the voltage transformer, and the length of the insulating sleeve is longer than the secondary outlet of the secondary quick opening switch of the voltage transformer 5 The exposed wire core part;

Step 3: Fix and connect each wire core of the secondary outgoing line 5 of the secondary quick opening switch of the voltage transformer to the terminal 6 respectively.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but as long as they do not depart from the technical solution of the present invention, according to the technical content of the present invention Within the spirit and principles of the present invention, any simple modifications, equivalent replacements and improvements made to the above embodiments still fall within the scope of protection of the technical solutions of the present invention.

Claims (2)

1. A secondary outlet sleeve for a quick opening switch of a voltage transformer, which includes an insulating jacket (1), an insulating inner jacket (2) and an auxiliary handle (3), and the insulating jacket (1) is set on the insulating inner jacket ( 2), the outer wall of the thermal insulation inner cover (2) is bonded to the inner wall of the insulating inner cover (1), the insulating outer cover (1) and the thermal insulation inner cover (2) form an insulating sleeve, and the auxiliary handle (3) It is arranged on the outer wall of the insulating jacket (1); it is characterized in that: the auxiliary handle (3) is a strip-shaped elastic strip, and the upper end of the elastic strip is fixedly connected with the outer wall of the insulating jacket (1); the compression sleeve The cylinder (4) is set on the insulating jacket (1); the lengths of the insulating jacket (1) and the thermal insulation inner jacket (2) are both 10cm to 50cm. 2. A method for utilizing the sleeve described in claim 1 to carry out a secondary outlet of a voltage transformer quick opening switch, characterized in that, said a kind of connection method for the secondary outlet of a voltage transformer quick opening switch is as follows Steps to achieve: Step 1. Peel off the insulating sheath of the three phases of the secondary outlet of the secondary quick opening switch of the voltage transformer (5), respectively, to expose the wire core; Step 2: Set one insulating sleeve outside each core of the secondary outlet (5) of the secondary quick opening switch of the voltage transformer, and the length of the insulating sleeve is longer than that of the second quick opening switch of the voltage transformer. The wire core part exposed by the secondary outlet (5); Step 3: Fix and connect each wire core of the secondary outgoing line (5) of the secondary quick opening switch of the voltage transformer to the connecting terminal (6).