CN212808584U

CN212808584U - On-load tap-changer model tool of power transformer

Info

Publication number: CN212808584U
Application number: CN202021718149.0U
Authority: CN
Inventors: 王�锋; 张兴兵; 刘曙光; 温慧玲
Original assignee: Shandong Linglong Electromechanical Co Ltd
Current assignee: Shandong Linglong Electromechanical Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-26
Anticipated expiration: 2030-08-18

Abstract

The utility model belongs to power transformer high pressure shunting lead wire frock field, concretely relates to power transformer on-load tapping switch model frock, the power distribution box comprises a box body, the left end fixedly connected with junction box of box, the upper end contact of junction box is connected with the ring flange, the lower extreme fixedly connected with shunting model of ring flange, there is the gear terminal upper end of shunting model through threaded connection, the lower extreme fixedly connected with tube of shunting model, the lower extreme fixedly connected with base of tube, the lower extreme fixedly connected with sleeve of base, telescopic inside sliding connection has the shock absorber rod, telescopic inside contact is connected with the spring. The utility model discloses a mode of establishing sleeve, shock-absorbing rod and spring is added to the lower extreme at its shunting model, makes it can not receive great impact force when hoist and mount, makes its component that can protect its upper end when hoist and mount repeatedly, reduces the influence of impact force to it.

Description

On-load tap-changer model tool of power transformer

Technical Field

The utility model relates to a power transformer high pressure tapping lead wire frock technical field specifically is a power transformer on-load tapping switch model frock.

Background

In the production process of large and medium-sized power transformers with the voltage of 35kV or below, particularly in the high-voltage tapping lead process of the power transformers, strict requirements are provided for the length of the high-voltage tapping lead and the installation sequence of gear binding posts of the high-voltage tapping lead; the high-voltage tapping lead is too long, so that the high-voltage tapping lead is wasted, and the production cost is high; the high-voltage tapping lead is too short, so that the high-voltage tapping lead cannot be connected with a gear binding post of the on-load tapping switch; if the installation sequence of the gear binding posts of the high-voltage tapping lead is wrong, when the voltage of a power grid fluctuates, the on-load tapping switch cannot complete normal gear switching, and meanwhile, the on-load tapping switch can be burnt, so that in order to ensure the accuracy of the length of the high-voltage tapping lead and the installation sequence of the gear binding posts of the high-voltage tapping lead, the on-load tapping switch must be firstly hoisted on a specified position of a power transformer body in the high-voltage tapping lead process of the power transformer, and the overall quality of the high-voltage tapping lead of the power transformer and the requirement of normal operation of the power transformer after operation are ensured.

When the on-load tap-changer cannot be purchased in a factory on time, a power transformer on-load tap-changer model tool can be adopted for replacement, the power transformer on-load tap-changer model tool can be pre-installed in a junction box, when the tap-changer model is used, the power transformer on-load tap-changer model tool is only required to be repeatedly used for ensuring a replacement product required by production, a component at the upper end of the power transformer on-load tap-changer model tool is loosened due to impact force during hoisting, the power transformer on-load tap-changer model tool needs to be dismantled at the later stage, so that the number of upper.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power transformer on-load tap-changer model frock has solved the not hard up, the high-pressure pin connection of component and has demolishd inconvenient problem after the model receives the impact in hoist and mount process.

In order to achieve the above object, the utility model provides a following technical scheme: a power transformer on-load tap-changer model tool comprises a box body, wherein a junction box is fixedly connected to the left end of the box body, a flange plate is connected to the upper end of the junction box in a contact manner, a tap model is fixedly connected to the lower end of the flange plate, a gear binding post is connected to the upper end of the tap model through threads, a bobbin is fixedly connected to the lower end of the tap model, a base is fixedly connected to the lower end of the bobbin, a sleeve is fixedly connected to the lower end of the base, a shock absorption rod is slidably connected to the inner portion of the sleeve, a spring is connected to the inner portion of the sleeve in a contact manner, the shock absorption rod is connected to the lower end of the spring in a contact manner, a junction box is fixedly connected to the inner portion of the box body, a high-voltage wire rod is connected to, the inside contact of gear terminal is connected with high-voltage lead, the connecting hole has been seted up to the inside of gear terminal, the lower extreme fixedly connected with screw thread post of gear terminal.

Preferably, the lower end of the sleeve is connected with a first screw rod through threads, the outer side of the damping rod is connected with the first screw rod in a contact manner, and the first screw rods are distributed on the left side and the right side of the lower end of the sleeve.

Preferably, the lower end of the shock-absorbing rod is fixedly connected with a rubber pad, and the lower end of the rubber pad is in contact connection with the lower end of the inner wall of the junction box.

Preferably, the left end of the box body is provided with a first wire port, and the right end of the junction box is provided with a second wire port.

Preferably, the upper end of the box body is fixedly connected with an input column, and the lower end of the box body is fixedly connected with a bottom foot.

Preferably, the upper end fixedly connected with hoisting ring of ring flange, the inside of ring flange is rotated and is connected with screw rod two, the upper end of junction box has screw rod two through threaded connection.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a mode of establishing sleeve, shock-absorbing rod and spring is added to the lower extreme at its shunting model, makes it can not receive great impact force when hoist and mount, makes its component that can protect its upper end when hoist and mount repeatedly, reduces the influence of impact force to it.

2. The utility model discloses a be connected the mode of bolted connection for the ring flange rather than the junction box to convenient to detach is provided with the connecting hole in the inside of gear terminal, can pass the high-pressure lead wire from inside, then screws solid fixed ring, can be quick fix its high-pressure lead wire, and it is also more convenient to dismantle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a bottom view of the gear terminal of fig. 1 according to the present invention;

fig. 3 is an enlarged view of the structure of part a of fig. 1 according to the present invention;

fig. 4 is an enlarged view of the structure of the part B of fig. 1 according to the present invention.

In the figure: 1. a box body; 2. a junction box; 3. a flange plate; 4. tapping the model; 5. a gear binding post; 6. a bobbin; 7. a base; 8. a sleeve; 9. a shock-absorbing lever; 10. a spring; 11. a first screw rod; 12. a rubber pad; 13. a first wire port; 14. a second line port; 15. a wire frame; 16. a high voltage line pole; 17. a fixing ring; 18. a high voltage lead; 19. connecting holes; 20. a threaded post; 21. an input column; 22. footing; 23. hoisting a ring; 24. and a second screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, a power transformer on-load tap-changer model tool comprises a box body 1, a junction box 2 is fixedly connected to the left end of the box body 1, a flange 3 is connected to the upper end of the junction box 2 in a contact manner, a tap model 4 is fixedly connected to the lower end of the flange 3, a plurality of gear terminals 5 are arranged at the upper end of the tap model 4, the gear terminals 5 are connected to the upper end of the tap model 4 through threads, a bobbin 6 is fixedly connected to the lower end of the tap model 4, a base 7 is fixedly connected to the lower end of the bobbin 6, a sleeve 8 is fixedly connected to the lower end of the base 7, a shock-absorbing rod 9 is slidably connected inside the sleeve 8, a spring 10 is connected to the inner portion of the sleeve 8 in a contact manner, the spring 10 can reduce impact force through elastic deformation, the shock-absorbing rod 9 is connected to the lower end of the, the upper end fixedly connected with high-voltage lead 18 of high-voltage line pole 16, there is solid fixed ring 17 outside gear terminal 5 through threaded connection, and the internal contact of gear terminal 5 is connected with high-voltage lead 18, and connecting hole 19, the lower extreme fixedly connected with screw post 20 of gear terminal 5 have been seted up to gear terminal 5's inside.

Referring to fig. 3, the lower end of the sleeve 8 is connected with a first screw rod 11 through threads, the outer side of the damping rod 9 is connected with the first screw rod 11 in a contact manner, the first screw rods 11 are distributed on the left side and the right side of the lower end of the sleeve 8, and the first screw rods 11 limit the damping rod 9 to prevent the damping rod from slipping.

Referring to fig. 3, a rubber pad 12 is fixedly connected to the lower end of the shock-absorbing rod 9, the lower end of the rubber pad 12 is in contact connection with the lower end of the inner wall of the junction box 2, and the rubber pad 12 can prevent the bottom surface of the junction box 2 from being damaged in the hoisting process.

Referring to fig. 1, a first wire port 13 is formed at the left end of the box body 1, a second wire port 14 is formed at the right end of the connection box 2, and the first wire port 13 and the second wire port 14 are convenient for connecting a high-voltage lead 18.

Referring to fig. 1, an input column 21 is fixedly connected to the upper end of the box 1, a bottom foot 22 is fixedly connected to the lower end of the box 1, and the bottom foot 22 is made of a rubber material and has a certain insulation property, so that the leakage of the transformer can be avoided.

Referring to fig. 1, the upper end of the flange 3 is fixedly connected with a hoisting ring 23, the inside of the flange 3 is rotatably connected with a second screw 24, the upper end of the junction box 2 is connected with the second screw 24 through threads, and the tapping model 4 can be hoisted through the hoisting ring 23.

The utility model discloses the concrete implementation process as follows: the hanging hook of the crane is hung at the ring position of the hoisting ring 23, the crane is controlled to hoist the tapping model 4 to the upper end of the junction box 2 and put down through the crane, when the crane is lowered, the rubber pad 12 at the lower end of the shock absorption rod 9 is firstly contacted with the bottom surface of the interior of the junction box 2, then when the crane continues to fall, the spring 10 is compressed, the production line can be elastically deformed, the falling impact force is absorbed, the impact on the tapping model 4 can be reduced, when the crane is dismounted, the high-voltage lead 18 passes through the first wire opening 13 and the second wire opening 14, one end of the high-voltage lead 18 passes through the connecting hole 19 at the upper end of the gear binding post 5, then the high-voltage lead 18 is fixed through screwing the fixing ring 17, and after the fixing is finished, the screw rod second 24 of the flange 3 is screwed, so that dust cannot enter the.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power transformer on-load tap-changer model frock, includes box (1), its characterized in that: the left end fixedly connected with junction box (2) of box (1), the upper end contact of junction box (2) is connected with ring flange (3), the lower extreme fixedly connected with shunting model (4) of ring flange (3), there is gear terminal (5) upper end of shunting model (4) through threaded connection, the lower extreme fixedly connected with bobbin (6) of shunting model (4), the lower extreme fixedly connected with base (7) of bobbin (6), the lower extreme fixedly connected with sleeve (8) of base (7), the inside sliding connection of sleeve (8) has shock attenuation pole (9), the inside contact of sleeve (8) is connected with spring (10), the lower extreme contact of spring (10) is connected with shock attenuation pole (9), the inside fixedly connected with junction box (15) of box (1), there is high-voltage line pole (16) upper end through bolted connection of junction box (15), the upper end fixedly connected with high-voltage lead (18) of high-voltage line pole (16), there is solid fixed ring (17) outside gear terminal (5) through threaded connection, the inside contact of gear terminal (5) is connected with high-voltage lead (18), connecting hole (19) have been seted up to the inside of gear terminal (5), lower extreme fixedly connected with screw thread post (20) of gear terminal (5).

2. The on-load tap-changer model tool of the power transformer of claim 1, characterized in that: the lower end of the sleeve (8) is connected with a first screw rod (11) through threads, the outer side of the shock absorption rod (9) is connected with the first screw rod (11) in a contact mode, and the first screw rods (11) are distributed on the left side and the right side of the lower end of the sleeve (8).

3. The on-load tap-changer model tool of the power transformer of claim 1, characterized in that: the lower end of the shock absorption rod (9) is fixedly connected with a rubber pad (12), and the lower end of the rubber pad (12) is in contact connection with the lower end of the inner wall of the junction box (2).

4. The on-load tap-changer model tool of the power transformer of claim 1, characterized in that: the left end of the box body (1) is provided with a first wire port (13), and the right end of the junction box (2) is provided with a second wire port (14).

5. The on-load tap-changer model tool of the power transformer of claim 1, characterized in that: the upper end of the box body (1) is fixedly connected with an input column (21), and the lower end of the box body (1) is fixedly connected with a footing (22).

6. The on-load tap-changer model tool of the power transformer of claim 1, characterized in that: the upper end fixedly connected with hoisting ring (23) of ring flange (3), the inside of ring flange (3) is rotated and is connected with screw rod two (24), there is screw rod two (24) upper end through threaded connection of junction box (2).