CN215578092U

CN215578092U - Oil leakage prevention sealing mechanism for low-voltage terminal of special transformer

Info

Publication number: CN215578092U
Application number: CN202120850769.8U
Authority: CN
Inventors: 唐秧发
Original assignee: Hunan Hongye Transformer Co ltd
Current assignee: Hunan Hongye Transformer Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2022-01-18
Anticipated expiration: 2031-04-24

Abstract

The utility model discloses an oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer, which utilizes a sealing plate to fix a low-voltage outlet terminal in an overhead manner and is connected with the low-voltage outlet plate for sealing, so that the current of the low-voltage outlet terminal is prevented from entering the outlet plate and a sealing extrusion plate, the insulating and fixing functions are realized, and the installation stability is improved.

Description

Oil leakage prevention sealing mechanism for low-voltage terminal of special transformer

Technical Field

The utility model relates to the technical field of sealing structures, in particular to an oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer.

Background

The low-voltage terminal of the special transformer is an important component for leading out a low-voltage power supply in the special transformer to a power grid, most of the existing low-voltage terminals of special transformers are hermetically mounted by coating an epoxy resin insulating layer on the outer part of a terminal post and matching a pressing plate cover and a sealing ring, however, in this mounting method, the terminal post is mostly only in single close contact with the seal ring, and is sealed and fixed by the extrusion of the seal ring, so that the stability of the terminal post after installation is very poor, and the epoxy resin insulation layer outside the terminal post is used for a long time due to the expansion and contraction of the terminal post, therefore, the epoxy resin insulating layer is easy to damage, so that the problems of electric leakage and oil leakage reduction due to sealing performance can be caused, and therefore an oil leakage prevention sealing mechanism for the low-voltage terminal of the special transformer is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an oil leakage prevention sealing mechanism for special transformer low pressure terminal, includes the low pressure outlet plate, sealed stripper plate is installed to the upper end of low pressure outlet plate, the upper end spiro union of sealed stripper plate has the extrusion cover, the seal cover has been cup jointed to the inside wall of extrusion cover, the shrink cover has been cup jointed to the lower extreme that the lateral wall of seal cover is located the extrusion cover, the low pressure outlet terminal has been cup jointed to the inside wall of seal cover.

Preferably, the low pressure outlet plate package rubbing board body, the last fixed surface of plate body installs a plurality of clamping screw, clamping screw's lateral wall spiro union has set screw, the socket has been seted up to the upper surface of plate body, and the socket cup joints with low pressure leading-out terminal mutually, a plurality of chamfer grooves have been seted up to the inside wall of socket.

Preferably, sealed stripper plate includes and extrudees the piece with chamfer groove matched with chamfer, and chamfer extrusion piece extrudees with low pressure leading-out terminal mutually, the upper end laminating of chamfer extrusion piece has the insulation board, the mounting panel has been cup jointed to the lateral wall of insulation board, the outer fringe laminating that the bottom surface of mounting panel is located the insulation board has sealed the pad, the upper surface of mounting panel runs through the hole of cup jointing that cup joints mutually with the screw rod, the upper end fixed mounting of mounting panel has the thread bush, the bottom surface of thread bush runs through there is the patchhole, and the extrusion chamfer has been seted up to the upper end of patchhole.

Preferably, the extrusion sleeve comprises a cylinder, the outer side wall of the cylinder is provided with a thread screwed with the thread sleeve, the middle of the cylinder is provided with a through hole, the bottom surface of the cylinder is provided with an extrusion groove, and the upper end of the cylinder is fixedly provided with a rotating block.

Preferably, the seal cover includes the sealed tube, the lateral wall and the clearing hole of sealed tube cup joint mutually, the inside wall and the low pressure terminal that goes out of the line of sealed tube cup joint mutually, the lower extreme integrated into one piece of sealed tube has sealed chamfer ring, and sealed chamfer ring and extrusion chamfer cooperate.

Preferably, the shrink sleeve includes the toper ring, and the toper ring cup joints with the sealed tube mutually, the shrink groove has evenly been seted up to the upper end and the lower extreme of toper ring, the bottom surface of toper ring extrudees with the upper end of sealed chamfer ring mutually, the upper end and the extrusion groove of toper ring extrude mutually.

Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to an oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer, which utilizes a sealing plate to fix a low-voltage outlet terminal in an overhead manner and is connected with the low-voltage outlet terminal for sealing, thereby preventing the current of the low-voltage outlet terminal from entering the outlet plate and a sealing extrusion plate, realizing the function of insulation fixing and improving the installation stability.

Drawings

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

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic view of the structure of the shrinkable sleeve of the present invention.

In the figure: the low-voltage outlet plate comprises a low-voltage outlet plate 1, a plate body 11, a fixing screw 12, a fixing screw 13, a sleeve opening 14, a chamfer groove 15, a sealing extrusion plate 2, a chamfer extrusion block 21, an insulating plate 22, a mounting plate 23, a sealing gasket 24, a sleeve hole 25, a thread sleeve 26, an insertion hole 27, an extrusion chamfer 28, an extrusion sleeve 3, a column body 31, a thread 32, a through hole 33, an extrusion groove 34, a rotating block 35, a sealing sleeve 4, a sealing pipe 41, a sealing chamfer ring 42, a shrinkage sleeve 5, a tapered ring 51, a shrinkage groove 52 and a low-voltage outlet terminal 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an oil leakage prevention sealing mechanism for special transformer low pressure terminal, includes low pressure outlet plate 1, and sealed stripper plate 2 is installed to the upper end of low pressure outlet plate 1, and the upper end spiro union of sealed stripper plate 2 has extrusion sleeve 3, and extrusion sleeve 3's inside wall has cup jointed seal cover 4, and the lower extreme that the lateral wall of seal cover 4 is located extrusion sleeve 3 has cup jointed shrink sleeve 5, and seal cover 4's inside wall has cup jointed low pressure outlet terminal 6.

Particularly, low pressure outlet plate 1 includes plate body 11, and the last fixed surface of plate body 11 installs a plurality of clamping screw 12, and clamping screw 12's lateral wall spiro union has set screw 13, and plate body 11's upper surface has seted up socket 14, and socket 14 cup joints with low pressure outlet terminal 6 mutually, and a plurality of chamfer grooves 15 have been seted up to socket 14's inside wall.

The mounting plate 23 is mounted on the plate body 11 by the fixing screw 12 and the fixing screw 13.

The diameter of the socket 14 is larger than the diameter of the low voltage outlet terminal 6 to prevent the low voltage outlet terminal 6 from contacting the plate body 11.

Particularly, sealed stripper plate 2 includes chamfer extrusion piece 21 with chamfer groove 15 matched with, and chamfer extrusion piece 21 extrudees with low pressure leading-out terminal 6 mutually, the upper end laminating of chamfer extrusion piece 21 has insulation board 22, insulation board 22's lateral wall has cup jointed mounting panel 23, the outer fringe laminating that mounting panel 23's bottom surface is located insulation board 22 has sealed the pad 24, mounting panel 23's upper surface runs through the hole 25 that cup joints mutually with clamping screw 12, mounting panel 23's upper end fixed mounting has thread bush 26, thread bush 26's bottom surface runs through has patchhole 27, and extrusion chamfer 28 has been seted up to patchhole 27's upper end.

The chamfer extrusion block 21 is made of insulating hard high-temperature resistant material, such as a mica plate.

After the mounting plate 23 is fixed on the low-voltage outlet plate 1, the chamfer extrusion block 21 is extruded to descend in the chamfer groove 15, so that the chamfer extrusion block 21 is clamped on the low-voltage outlet terminal 6, and the function of fixing the low-voltage outlet terminal 6 is achieved.

The upper end of the chamfer extrusion block 21 is attached to an insulating plate 22 (the insulating plate 22 is annular), and the middle part of the insulating plate 22 is tightly sleeved with the low-voltage outlet terminal 6, so that the mounting plate 23 is not contacted with the low-voltage outlet terminal 6, and the insulating purpose is achieved.

The diameter of the insertion hole 27 is larger than the diameter of the low-voltage outlet terminal 6.

Specifically, the extrusion sleeve 3 includes a column 31, a thread 32 screwed with the threaded sleeve 26 is formed on an outer side wall of the column 31, a through hole 33 is formed in a middle portion of the column 31, an extrusion groove 34 is formed on a bottom surface of the column 31, and a rotating block 35 is fixedly mounted on an upper end of the column 31.

When the cylinder 31 is rotated, the cylinder 31 is lowered by the screw engagement of the threaded sleeve 26 and the threads 32.

The rotation block 35 is used to facilitate rotation of the cylinder 31.

Specifically, the sealing sleeve 4 includes a sealing tube 41, an outer side wall of the sealing tube 41 is sleeved with the through hole 33, an inner side wall of the sealing tube 41 is sleeved with the low-voltage outlet terminal 6, a sealing chamfer ring 42 is integrally formed at a lower end of the sealing tube 41, and the sealing chamfer ring 42 is matched with the extrusion chamfer 28.

The sealing tube 41 is sleeved in the through hole 33 to insulate and separate the low-voltage outlet terminal 6 from the column 31, thereby preventing the current from being conducted to the column 31.

Specifically, the shrink sleeve 5 includes a tapered ring 51, the tapered ring 51 is sleeved with the sealing tube 41, the upper end and the lower end of the tapered ring 51 are uniformly spaced to form a shrink groove 52, the bottom surface of the tapered ring 51 is pressed against the upper end of the sealing chamfered ring 42, and the upper end of the tapered ring 51 is pressed against the pressing groove 34.

When the cylinder 31 descends, the pressing groove 34 on the cylinder 31 presses the tapered ring 51 to shrink the tapered ring 51, and when the tapered ring 51 shrinks, the sealing tube 41 is pressed to make the sealing tube 41 and the low-voltage outlet terminal 6 closely attached, and when the cylinder 31 descends, the tapered ring 51 also descends, and when the tapered ring 51 descends, the sealing chamfer ring 42 is pressed to make the sealing chamfer ring 42 enter the pressing chamfer 28, so that the insertion hole 27 and the low-voltage outlet terminal 6 are sealed to prevent oil leakage.

The working principle is as follows: the utility model utilizes the sealing plate 2 to fix the low-voltage outlet terminal 6 in an overhead manner, and simultaneously connects and seals with the low-voltage outlet plate 1, thereby preventing the current of the low-voltage outlet terminal 6 from entering the outlet plate 1 and the sealing extrusion plate 2, realizing the function of insulation fixing, and improving the installation stability of the low-voltage outlet terminal.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil leak protection sealing mechanism for special transformer low pressure terminal, includes low pressure outlet plate (1), its characterized in that: sealed stripper plate (2) are installed to the upper end of low pressure outlet plate (1), the upper end spiro union of sealed stripper plate (2) has extrusion cover (3), seal cover (4) have been cup jointed to the inside wall of extrusion cover (3), shrink cover (5) have been cup jointed to the lower extreme that the lateral wall of seal cover (4) is located extrusion cover (3), low pressure leading-out terminal (6) have been cup jointed to the inside wall of seal cover (4).

2. The oil leakage prevention sealing mechanism for the low-voltage terminal of the special transformer as claimed in claim 1, wherein: low pressure outlet plate (1) is including plate body (11), the last fixed surface of plate body (11) installs a plurality of clamping screw (12), the lateral wall spiro union of clamping screw (12) has set screw (13), cup joint (14) have been seted up to the upper surface of plate body (11), and cup joint (14) and low pressure leading-out terminal (6) cup joint mutually, a plurality of chamfer grooves (15) have been seted up to the inside wall of cup joint (14).

3. An oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer according to claim 2, characterized in that: sealed stripper plate (2) include with chamfer groove (15) matched with chamfer extrusion piece (21), and chamfer extrusion piece (21) extrudees with low pressure leading-out terminal (6) mutually, the upper end laminating of chamfer extrusion piece (21) has insulation board (22), mounting panel (23) have been cup jointed to the lateral wall of insulation board (22), the outer fringe laminating that the bottom surface of mounting panel (23) is located insulation board (22) has sealed pad (24), the upper surface of mounting panel (23) runs through has cup joint hole (25) that cup joints mutually with clamping screw (12), the upper end fixed mounting of mounting panel (23) has thread bush (26), the bottom surface of thread bush (26) runs through has patchhole (27), and the upper end of patchhole (27) has seted up extrusion chamfer (28).

4. An oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer according to claim 3, characterized in that: the extrusion cover (3) comprises a cylinder (31), threads (32) which are screwed with the thread cover (26) are arranged on the outer side wall of the cylinder (31), a through hole (33) is formed in the middle of the cylinder (31), an extrusion groove (34) is formed in the bottom surface of the cylinder (31), and a rotating block (35) is fixedly arranged at the upper end of the cylinder (31).

5. The oil leakage prevention sealing mechanism for the low-voltage terminal of the special transformer is characterized in that: seal cover (4) are including sealed tube (41), the lateral wall and clearing hole (33) of sealed tube (41) cup joint mutually, the inside wall and the low pressure outlet terminal (6) of sealed tube (41) cup joint mutually, the lower extreme integrated into one piece of sealed tube (41) has sealed chamfer ring (42), and sealed chamfer ring (42) and extrusion chamfer (28) cooperate.

6. An oil leakage prevention sealing mechanism for a low-voltage terminal of a special transformer according to claim 5, characterized in that: shrink sleeve (5) are including toper ring (51), and toper ring (51) cup joint mutually with sealed tube (41), shrink groove (52) have been seted up to the upper end and the even interval of lower extreme of toper ring (51), the bottom surface of toper ring (51) extrudees with the upper end of sealed chamfer ring (42) mutually, the upper end and the extrusion groove (34) of toper ring (51) extrude mutually.