CN204321977U

CN204321977U - PT fuse dismantling device

Info

Publication number: CN204321977U
Application number: CN201420808894.2U
Authority: CN
Inventors: 石松; 李少明; 袁新让
Original assignee: Liuzhou Power Supply Bureau of Guangxi Power Grid Co Ltd
Current assignee: Liuzhou Power Supply Bureau of Guangxi Power Grid Co Ltd
Priority date: 2014-12-19
Filing date: 2014-12-19
Publication date: 2015-05-13
Anticipated expiration: 2024-12-19

Abstract

The utility model discloses a kind of PT fuse dismantling device, relate to Electric Manufacture technical field; Comprise a hollow sleeve pipe, described sleeve pipe is provided with the handle assembly that it can be made to rotate, the two ends of described sleeve pipe are respectively equipped with nut, described nut thread is connected with screw mandrel, fixture is respectively arranged with between described nut and described handle assembly, one end of described screw mandrel is stretched in described sleeve pipe through described nut, and its other end arranges and opens clamping plate jaggy; The utility model can solve maintenance or time-consuming, the ineffective problem of replacing 35kV PT fuse in current transformer station.

Description

PT fuse dismantling device

Technical field

The utility model relates to Electric Manufacture technical field, especially a kind of for transformer station's maintenance or the dismantling device changing 35kV PT fuse.

Background technology

PT, also known as induction type voltage transformer, is one of visual plant of transformer station, and people use electromagnetic induction principle, by PT, the high voltage of electrical network main equipment is converted to low-voltage, thus realizes the monitoring to electrical network main equipment, causing body to damage and failure propagation when there is internal fault for preventing 35kV PT inductance coil, fuse need be set in PT power supply side, 35kV PT fuse is generally located on the high support porcelain vase in distance 4 ~ 5 meters, ground, and it is fastening by sleeve pipe retainer ring, during work high above the ground overhead about 3 meters, fuse both sides connect PT and bus by wire, because the reasons such as resonance cause fuse blows in operation, make PT secondary voltage Loss, and the voltage making all route protections of 35kV and main transformer protection gather is abnormal, likely cause false protection or tripping, very large hidden danger is caused to system stable operation, now must have a power failure immediately and change fuse in time by attendant and avoid PT secondary voltage Loss.At present, there are the following problems to change 35kV PT fuse: one, 35kV PT fuse is when normal installed position, contained spring is in compressive state, the elastic force of spring reaches 250N, and the lateral thrust of ordinary people generally only has 220N, therefore single side direction cannot realize the installation of end cap, and therefore changing the built-in fuse of PT needs three people, two operating personnels and a support staff; Two, fuse is originally as circular porcelain structure, and own wt is heavier, and carry out dismounting fuse by dismounting sleeve pipe retainer ring, difficulty is larger; And fuse has the danger of falling from high altitude, fuse is changed in high-altitude at least needs 2 persons on duty to coordinate at height in the air, and work high above the ground risk also increases greatly; Three, because of the restriction of the scope of operation, the one-sided many people operation in high-altitude cannot be realized, cause fuse cannot dismantle in high-altitude, assemble, fuse must be dismantled to ground, a people is auxiliary offsets spring force, people's dismounting fuse, complete the replacing of fuse, waste time and energy.

Summary of the invention

The purpose of this utility model is to provide a kind of PT fuse dismantling device, to solve maintenance or time-consuming, the ineffective problem of replacing 35kV PT fuse in current transformer station.

In order to solve the problem, the technical solution adopted in the utility model is:

A kind of PT fuse dismantling device, comprise a hollow sleeve pipe, described sleeve pipe is provided with the handle assembly that it can be made to rotate, the two ends of described sleeve pipe are respectively equipped with nut, described nut thread is connected with screw mandrel, between described nut and described handle assembly, be respectively arranged with fixture, one end of described screw mandrel is stretched in described sleeve pipe through described nut, and its other end arranges and opens clamping plate jaggy.

In above technical scheme, further scheme is: described runner assembly comprises rotor, ratchet, turning handle and conversion shift fork, described ratchet to be arranged in described rotor and to be sleeved on described sleeve pipe, described conversion shift fork is abutted with described ratchet and is arranged on by pin on described rotor, and described turning handle is threaded with described rotor.

Further: described fixture comprises bearing, fixed head, fixed feet, band and bolt, described bearing is connected with described fixed head by described band, described bolt, described fixed feet is opening semicircle outwardly, its top and described fixed head affixed.

Owing to have employed technique scheme, the utility model compared with prior art has following beneficial effect:

1, the utility model solve high-altitude cannot the problem of single dismounting 35kV PT fuse porcelain bottle sleeve end cap, save manpower, no longer by the restriction in work high above the ground space;

2, the utility model is adopted to change 35kV PT fuse, safety is easy to operate, greatly reduces operating risk, because installed fixture on dismantling device, prevent dismantling device in dismounting fuse process from rocking back and forth, improve the stability in dismounting fuse operation process;

3, whole dismantling device volume is little, lightweight, carries with convenient to use, can eliminate fuse failure in time, increase work efficiency.

Accompanying drawing explanation

Fig. 1 is the utility model top view.

Fig. 2 is the front view of fixture.

Fig. 3 is the front view of handle assembly.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is further described: as shown in Figure 1, a kind of PT fuse dismantling device, comprise a hollow sleeve pipe 5, the middle part of sleeve pipe 5 is provided with the handle assembly 6 that sleeve pipe 5 can be made to rotate, as shown in Figure 3, runner assembly 6 comprises rotor 6-2, ratchet (not shown), turning handle 6-1 and conversion shift fork 6-3, ratchet to be arranged in rotor 6-2 and to be sleeved on the cylindrical of sleeve pipe 5, conversion shift fork 6-3 abuts with ratchet and is arranged on rotor 6-2 by pin, and turning handle 6-1 is threaded with rotor 6-2.

The two ends of sleeve pipe 5 have been threaded nut 3 respectively, and the internal thread of nut 3 is divided into two sections that vary in size, and wherein large one section is regular screw threads, is connected with the external screw thread of sleeve pipe 5; Little one section is T-shaped screw thread, and one end of screw mandrel 2 is stretched in sleeve pipe 5 through nut 3, and its other end arranges and opens clamping plate 1 jaggy, and clamping plate notch size is as the criterion with the binding post just sticking into 35kV PT fuse porcelain bottle sleeve body end and cover face; Fixture 4 is respectively arranged with near the inner side of nut 3, as shown in Figure 2, fixture 4 comprises bearing 4-1, fixed head 4-2, fixed feet 4-3, band 4-4 and bolt 4-5, wherein the shape of fixed feet 4-3 is opening semicircle outwardly, bearing 4-1 is connected on fixed head 4-2 by band 4-4, bolt 4-5, and semi-circular top and the fixed head 4-2 of fixed feet 4-3 are welded and fixed; Bearing 4-1 is arranged on the cylindrical of sleeve pipe 5, the inner ring of its middle (center) bearing 4-1 and sleeve pipe 5 interference fit, and the distance of two fixtures 4 is suitable, and when guaranteeing to use, two fixed feet 4-3 can just be stuck in the circular groove of 35kV PT fuse porcelain vase.

During use, first adjust the distance between two fixtures 4, make the fixed feet 4-3 of fixture 4 be stuck in the circular groove of 35kV PT fuse porcelain vase; Pull the turning handle 6 of handle assembly 6, turning handle 6 drives rotor 6-2 to be rotated by ratchet straps moving sleeve 5 and nut 3, the forward or reverse of rotor 6-2 is controlled by conversion shift fork 6-3, now, the screw mandrel 2 at two ends will screw in opposite directions simultaneously or screw out sleeve 5, finally make the opening of clamping plate 1 stick into 35kV PT fuse porcelain bottle sleeve body end and cover on the binding post in face; Then just can change 35kV PT fuse, after replacing fuse completes, pull turning handle 6, PT fuse dismantling device is exited.

Claims

1. a PT fuse dismantling device, it is characterized in that: comprise a hollow sleeve pipe (5), described sleeve pipe (5) is provided with the handle assembly (6) that it can be made to rotate, the two ends of described sleeve pipe (5) are respectively equipped with nut (3), described nut (3) has been threaded screw mandrel (2), fixture (4) is respectively arranged with between described nut (3) and described handle assembly (6), one end of described screw mandrel (2) is stretched in described sleeve pipe (5) through described nut (3), and its other end arranges and opens clamping plate jaggy (1).

2. PT fuse dismantling device according to claim 1, it is characterized in that: described runner assembly (6) comprises rotor (6-2), ratchet, turning handle (6-1) and conversion shift fork (6-3), described ratchet to be arranged in described rotor (6-2) and to be sleeved on described sleeve pipe (5), described conversion shift fork (6-3) is abutted with described ratchet and is arranged on by pin on described rotor (6-2), and described turning handle (6-1) is threaded with described rotor (6-2).

3. PT fuse dismantling device according to claim 1 and 2, it is characterized in that: described fixture (4) comprises bearing (4-1), fixed head (4-2), fixed feet (4-3), band (4-4) and bolt (4-5), described bearing (4-1) is connected with described fixed head (4-3) by described band (4-4), described bolt (4-5), described fixed feet (4-3) is opening semicircle outwardly, its top and described fixed head (4-2) affixed.