阅读说明：本技术 一种室外变压器用内拉式绝缘套管 (Indoor pull type insulating sleeve for outdoor transformer ) 是由 刘昱瑄 李张傲 于 2021-03-15 设计创作，主要内容包括：本发明公开了一种室外变压器用内拉式绝缘套管,包括瓷套管本体和内拉固定组件,所述瓷套管本体由上至下分别为伞裙部、底座以及伸入变压器内部的尾部,所述内拉固定组件可拆卸连接于所述尾部上,所述尾部插入变压器内部后,通过所述内拉式固定组件,可使得所述瓷套管本体夹紧固定于变压器的壳体上,且夹紧固定后所述底座与变压器壳体外壁间夹设有外部密封环,通过在瓷套管本体尾部镶嵌内嵌环,内嵌环通过螺纹与套筒连接,使得瓷套管底座与抵紧环分别紧贴变压器箱盖外侧壁与箱盖内侧壁,从而固定瓷套管本体。本发明提供的室外变压器用内拉式绝缘套管具有仅需要在变压器内部通过金属件固定套管,以杜绝金属件暴露在空气中腐蚀的效果。(The invention discloses an inner-pulling type insulating sleeve for an outdoor transformer, which comprises a porcelain sleeve body and an inner-pulling fixing assembly, wherein the porcelain sleeve body is respectively provided with an umbrella skirt part, a base and a tail part extending into the transformer from top to bottom, the inner-pulling fixing assembly is detachably connected to the tail part, the porcelain sleeve body can be clamped and fixed on a shell of the transformer through the inner-pulling type fixing assembly after the tail part is inserted into the transformer, an external sealing ring is clamped and fixed between the base and the outer wall of the shell of the transformer, an inner embedded ring is embedded at the tail part of the porcelain sleeve body and connected with a sleeve through threads, so that the porcelain sleeve base and a resisting ring are respectively attached to the outer side wall and the inner side wall of a box cover of the transformer, and the porcelain sleeve body is fixed. The internal pulling type insulating sleeve for the outdoor transformer has the effect that the sleeve is fixed only through the metal piece in the transformer, so that the metal piece is prevented from being exposed in the air and corroded.)

1. The utility model provides an outdoor transformer is with interior formula insulation support that draws which characterized in that: including the porcelain bushing body and the fixed subassembly of internal tension, the porcelain bushing body from top to bottom is umbrella skirt portion (1), base (2) and stretches into inside afterbody (3) of transformer respectively, internal tension fixed subassembly can dismantle connect in on afterbody (3), afterbody (3) insert the inside back of transformer, through the fixed subassembly of internal tension formula can make the porcelain bushing body presss from both sides tightly to be fixed in on the casing of transformer, and presss from both sides tightly to press from both sides after fixing base (2) and the transformer casing outer wall and press from both sides and be equipped with outside sealing ring (4).

2. The inner pull type insulation sleeve for the outdoor transformer according to claim 1, characterized in that: the fixed subassembly of interior pulling includes interior becket (5) and sleeve (6), the annular groove has been seted up to afterbody (3) periphery, interior becket (5) are inlayed and are fixed in the recess, interior becket (5) outer ring surface is provided with the screw thread, just the screw thread is outstanding extremely outside the recess, sleeve (6) inner wall be provided with the screw thread of interior becket (5) looks adaptation.

3. The inner pull type insulation sleeve for the outdoor transformer according to claim 2, characterized in that: the fixed subassembly of interior drawing still includes to support tight ring (7), support tight ring (7) cover is located the periphery of sleeve (6), works as sleeve (6) with when interior abaculus ring (5) meshing is screwed, support tight ring (7) compress tightly transformer shell inner wall.

4. The inner pull type insulation sleeve for the outdoor transformer according to claim 2, characterized in that: the fixing glue used for preventing the relative rotation of the inner embedded ring (5) and the tail part (3) is arranged between the inner embedded ring (5) and the inner wall of the groove.

5. The inner pull type insulation sleeve for the outdoor transformer according to claim 3, characterized in that: the inner sealing ring (8) of the top end face of the abutting ring (7) is used for tightly pressing the inner wall of the transformer, when the sleeve (6) is meshed with the inner embedded ring (5) and is screwed, the outer sealing ring (4) is tightly attached to the outer wall of the transformer, and the inner sealing ring (8) is tightly attached to the inner wall of the transformer.

6. An inner pull type insulation sleeve for an outdoor transformer according to any one of claims 1 to 5, characterized in that: the inner bottom surface of the base (2) is provided with an annular groove for the outer sealing ring (4) to be embedded and fixed.

Technical Field

The invention relates to the technical field of power equipment, in particular to an inner pull type insulating sleeve for an outdoor transformer.

Background

The transformer bushing is a main insulation device outside the transformer box, and the outgoing lines of the transformer winding must penetrate through the insulation bushing to insulate the outgoing lines and the outgoing lines from the transformer shell, and meanwhile, the transformer bushing plays a role in fixing the outgoing lines. The insulating sleeve has the forms of a pure porcelain sleeve, an oil-filled sleeve, a capacitor sleeve and the like due to different voltage grades.

Traditional transformer bushing adopts the bolt formula mostly to compress tightly at the outer fixed connection of case lid, and such mounting means has two drawbacks: firstly, the processing procedure is complicated, and the metal pressure foot bolt reduces the effective insulation distance, thereby causing unnecessary waste; and secondly, the external bolt can be abraded by the antirust paint with a protective effect in the installation process, rust spots are inevitably caused to corrode the oil tank after the external bolt is exposed to the sun and rain, great hidden danger is caused to safety, and the service life of the transformer is influenced.

Disclosure of Invention

Aiming at the problems, the inner pull type insulating sleeve for the outdoor transformer is provided, and the sleeve is only required to be fixed through a metal piece inside the transformer, so that the effect that the metal piece is exposed to the air and corroded is avoided.

The specific technical scheme is as follows:

the utility model provides an indoor formula insulation support that draws for outdoor transformer, includes the porcelain bushing body and draws fixed subassembly in with, the porcelain bushing body is umbrella skirt portion, base and stretches into the inside afterbody of transformer from top to bottom respectively, draw fixed subassembly in can dismantle connect in on the afterbody, the afterbody inserts the inside back of transformer, through draw fixed subassembly in, can make the porcelain bushing body presss from both sides tightly to be fixed in on the casing of transformer, and presss from both sides tightly to fix the back it is equipped with external sealing ring to press from both sides between base and the outer wall of transformer casing.

The internal-pulling type insulating sleeve for the outdoor transformer is characterized in that the internal-pulling fixing component comprises an internal embedded ring and a sleeve, an annular groove is formed in the periphery of the tail portion, the internal embedded ring is embedded and fixed in the groove, threads are arranged on the surface of the outer ring of the internal embedded ring and protrude out of the groove, and threads matched with the internal embedded ring are arranged on the inner wall of the sleeve.

The beneficial effect of above-mentioned scheme: during installation, the sleeve is sleeved at the tail part and is meshed with the embedded ring for screwing.

The internal-pulling type insulating sleeve for the outdoor transformer is characterized in that the internal-pulling fixing component further comprises a butting ring, the butting ring is sleeved on the periphery of the sleeve, and when the sleeve is meshed with the embedded ring and screwed, the butting ring presses the inner wall of the transformer shell.

The beneficial effect of above-mentioned scheme: when the abutting ring is tightly attached to the inner wall of the transformer, the through hole of the porcelain bushing body inserted into the transformer can be closed as much as possible.

The internal pulling type insulating sleeve for the outdoor transformer is further characterized in that fixing glue for preventing the internal embedding ring and the tail part from rotating relatively is arranged between the internal embedding ring and the inner wall of the groove.

The beneficial effect of above-mentioned scheme: the embedded ring is fixedly connected with the inner wall of the groove through the adhesive, so that the embedded ring is prevented from being driven to rotate when the sleeve rotates, and the embedded ring and the groove cannot be screwed tightly.

The internal-pulling type insulating sleeve for the outdoor transformer is characterized in that the internal sealing ring is arranged on the top end face of the abutting ring, when the sleeve is meshed with the embedded ring and screwed, the external sealing ring is tightly attached to the outer wall of the transformer, and the internal sealing ring is tightly attached to the inner wall of the transformer.

The beneficial effect of above-mentioned scheme: the sealing effect is enhanced.

The internal-pulling type insulating sleeve for the outdoor transformer is further characterized in that the inner bottom surface of the base is provided with an annular groove for the external sealing ring to be embedded and fixed.

The beneficial effect of above-mentioned scheme: preventing displacement of the outer sealing ring.

In conclusion, the scheme has the beneficial effects that:

in the pull-in type insulating sleeve for the outdoor transformer, the inner embedded ring is embedded in the tail part of the porcelain sleeve body and is connected with the sleeve through the threads, so that the porcelain sleeve base and the abutting ring are respectively tightly attached to the outer side wall and the inner side wall of the transformer, and the porcelain sleeve body is fixed. The internal pulling type insulating sleeve for the outdoor transformer has the effect that the sleeve is fixed only through the metal piece in the transformer, so that the metal piece is prevented from being exposed in the air and corroded.

Drawings

Fig. 1 is a schematic front view of an installation state of an inner pull type insulation sleeve for an outdoor transformer according to the present invention;

fig. 2 is a schematic front sectional view showing an installation state of an inner pull type insulation sleeve for an outdoor transformer according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

Description of the drawings: 1. an umbrella skirt; 2. a base; 3. a tail portion; 4. an outer seal ring; 5. an embedded ring; 6. a sleeve; 7. a tightening ring; 8. an inner seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following 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.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.

Fig. 1 is a front view structural schematic diagram of an installation state of an inner pull type insulation sleeve for an outdoor transformer according to the present invention, fig. 2 is a front cross-sectional structural schematic diagram of an installation state of an inner pull type insulation sleeve for an outdoor transformer according to the present invention, fig. 3 is an enlarged structural schematic diagram of a point a in fig. 2 according to the present invention, as shown in fig. 1, fig. 2, and fig. 3, the inner pull type insulation sleeve for an outdoor transformer according to the present embodiment: including porcelain bushing body and interior fixed subassembly that draws, the porcelain bushing body is umbrella skirt portion 1, base 2 and stretches into the inside afterbody 3 of transformer from top to bottom respectively, and interior fixed subassembly that draws can dismantle and connect on afterbody 3, and afterbody 3 inserts the inside back of transformer, through interior fixed subassembly that draws, can make the porcelain bushing body press from both sides tightly to be fixed in on the casing of transformer, and press from both sides to press from both sides between fixed back base 2 and the transformer casing outer wall and be equipped with external seal ring 4.

In the above embodiment, the internal pulling fixing component includes the internal ring 5 and the sleeve 6, the outer circumference of the tail portion 3 is provided with the annular groove, the internal ring 5 is embedded and fixed in the groove, the surface of the outer ring of the internal ring 5 is provided with the thread, the thread protrudes out of the groove, and the inner wall of the sleeve 6 is provided with the thread matched with the internal ring 5.

In the above embodiment, the internal pulling fixing component further includes a tightening ring 7, the tightening ring 7 is sleeved on the outer periphery of the sleeve 6, and when the sleeve 6 is engaged with the internal ring 5 and screwed, the tightening ring 7 presses the inner wall of the transformer housing.

In the above embodiment, a fixing glue for preventing the embedded ring 5 and the tail 3 from rotating relatively is arranged between the embedded ring 5 and the inner wall of the groove.

In the above embodiment, the top end face of the abutting ring 7 is provided with the inner sealing ring 8, when the sleeve 6 is engaged with the inner embedded ring 5 and screwed tightly, the outer sealing ring 4 is tightly attached to the outer wall of the transformer, and the inner sealing ring 8 is tightly attached to the inner wall of the transformer.

In the above embodiment, the inner bottom surface of the base 2 is provided with an annular groove for the outer sealing ring 4 to be embedded and fixed.

The theory of operation, when installation porcelain sleeve body, inserts the transformer with porcelain sleeve body afterbody 3 for 6 covers of sleeve are established and afterbody 3 with 6 covers of external sealing ring, make sleeve 6 and 5 meshing of embedded ring, rotate sleeve 6 and screw, hug closely the transformer inner wall until inside sealing ring 8, accomplish the installation promptly.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.