WO2019025023A1 - CONNECTABLE IMPLEMENTATION - Google Patents

Abstract

A bushing (1) for insertion into a receptacle (3) located behind a wall (2) and for electrically contacting the receptacle (3), comprising an insulating body (4) with a plug-in section (5) and a head section (6) opposite thereto , wherein in the insulating body (4) a conductor (7) is received, which extends at least from the head portion (6) to the insertion portion (5), wherein the insulating body (4) through a mounting flange (8) is guided through and on both sides of Mounting flange (8) extends so that the male portion (5) and the head portion (6) lie on different sides of the mounting flange (8) is in view of the task to provide a bushing, the problems with high mechanical stability and flexibility in a Implementation of a wall insertable and reversibly firmly connected to the wall, characterized in that the insulating body (4) in one piece from an elastic and el is made of an astomeric material, wherein in the insulating body (4) a field control body (13) is integrated and wherein the field control body (13) in one piece from the insertion portion (5) to the head portion (6) through the mounting flange (8).

Description

 Plug-in implementation

The invention relates to a implementation according to the preamble of

Patent claim 1.

Bushings have a continuous conductor, which is on both sides of a partition, such as a transformer or other equipment as liquid-filled transformers, such. B. switching devices, extends.

Against this background it is known from DE 2 003 751 A, a

To produce implementation in which a hollow body is inserted with a tubular end in an opening of a partition wall. The hollow body and the recorded in this conductor are foamed so that foam engages behind the partition and the hollow body is fixed to the partition.

In practice, however, it is often desirable to quickly dispose a bushing on a wall or partition with a breakthrough,

CONFIRMATION COPY to easily perform tests. After completion of the tests, the implementation should be easily removable again.

Against this background, from DE 196 53 527 C1 discloses a bushing with a centrally continuous conductor or bolt is known in which an insulator body of cast resin, porcelain or silicone extends on one side of a mounting flange. On the other side of the

Mounting flange is provided a footboard. Winding layers of the foot part are designed as filament bandages. When energy is released within the foot part, it is intended to prevent it from bursting in the direction of a transformer. The production of such

Implementation is complicated and expensive, since a transformer-side end must be produced by winding in a complex manner.

To avoid costs, it has become known from DE 1 929 570 U to use a leadthrough with an insulator made of cast resin and to screw an insulating plate onto the insulator. By means of the plate, the bushing is installed in a wall. The plate is housed between seals and can be bolted with a Klemmschraubring. Within the insulator, in turn, a current-carrying conductor is added. However, cast resins and the porcelain mentioned in this document are relatively brittle and fragile. In addition, seals are expensive and must be assembled in a complex manner.

The invention is therefore based on the object to provide a bushing that can be easily inserted into a passage of a wall with high mechanical stability and flexibility and reversibly firmly connected to the wall. The present invention achieves the above-mentioned object by the features of claim 1. According to the invention, it has been recognized that a bushing comprising an elastic and elastomeric material can be easily manufactured by one-piece casting. Such an implementation, unlike the aforementioned prior art solutions, comprises a single one

Insulating body, which performs all functions of electric field control, inside and outside the implementation. The insulating body does not have to have windings made of bandages in the insertion section or does not have to be constructed of windings made of bandages in the insertion section.

As a result, many steps can be saved. In addition, in the present invention eliminates an additionally required

 An insulator body used in aforementioned prior art solutions for receiving wraps from bandages. Ensuring the external dielectric strength, which is achieved in the aforementioned solutions by an insulator body, can be easily reproduced and achieved by appropriate shaping of an integrally cast insulating.

Further, it has been recognized that such an insulating body easily with

Recesses or recesses can be provided to others

To include elements such as field control body or the like during or after its manufacture. The geometric shape of the insulator is easy to implement.

Finally, it has been recognized that an elastic insulating body is mechanically stable and robust and yet can be easily deformed to either to accommodate other components and / or associated with these a wall. The implementation can be easily inserted into a receptacle or in an insulator. The material of the insulating body could be formed as silicone or as ethylene-propylene-diene rubber (EPDM). These materials are easy to cast and bond to other components cohesively. Furthermore, they are elastic, robust and reversibly deformable. The mounting flange could be formed in one or more parts and / or have means for reversible attachment to a wall or adapter plate. As a result, the mounting flange can be modular. A radially inner part could be connected to a field control body, wherein a separate radially outer part is provided with screw means or holes which are tuned to an already fixed fitting. Thus, a radially inner part can be matched to the insulating body and a radially outer part to a fixedly mounted on the wall fitting.

Against this background, it is conceivable that the mounting flange rests on the side of the Einsteckabschnitts on a separate adapter plate and / or connected to this or connectable. By an adapter plate, the Einragtiefe the Einsteckabschnitts and thus the conductor can be adjusted in a recording. As a result, a reliable electrical contacting of the conductor is ensured.

The mounting flange or a part of a mounting flange could be connected to a field control body, wherein the mounting flange or the part and / or the field control body are integrated as a prefabricated component in the insulating body. By this specific embodiment, a field control body can be selected modular, the respective

ruling tensions and equipment characteristics. For example, for different feedthroughs, the

different transformers or other equipment as liquid-filled transformers, such. As switching devices are docked, different field control body can be selected.

The field control body is preferably materially connected to the mounting flange or a part of a mounting flange. Preferably, the field control body is cast or molded onto the mounting flange or said part. The mounting flange or the part can also be connected to the field control body by jamming.

A field control body could be made of an elastomeric and elastic material having conductive or refractive or dissipative and / or limiting properties. The field control body may be made of silicone. Alternatively, the field control body could also be made of a metallic material.

The integrated in the insulating body field control preferably protrudes from

a plug-in section-side end within a receptacle or an insulator into the air surrounding head portion of the insulating body, wherein it is passed through the mounting flange in one piece.

In the mounting flange or a part of a mounting flange, at least one spring means could at least partially be accommodated, which unfolds spring force when expanding in the direction of the insertion section.

By the spring force of the, preferably elastic, field control body can be pressed into a receptacle or an insulator as closely as possible without leaving air gaps between the outer wall of the insulator and the receptacle or the insulator. Against this background, at least one blind hole could be formed in a tubular dome of the mounting flange or a part of a mounting flange which receives the spring or the spring means, wherein the spring or the spring means is or are designed as a tube-like spring package or tubular and in the direction of the Einsteckabschnitts is expandable or are.

Preferably, a plurality of such spring assemblies are arranged parallel to each other in each case in a blind hole or a single diameter-adapted spring element is provided in order to ensure round as possible a gap-free installation of the elastic insulating body on the wall of an insulator. The spring means can be at a bottom of their blind hole

good support on the head section side and its spring force in the direction of the

Exercise insertion section.

At the plug-in section-side end of the integrated field control body, the insulating body could be surrounded by a one-part or multi-part push-push sleeve, which presses the insulating body radially and / or axially against a receptacle or insulator by exerting or exerting spring force in the axial direction on the push-push sleeve , The push-pull sleeve provides a good for the male side ends of the spring means

Abutment and can redirect their spring force, in particular in the radial direction, to press the elastic insulating body gap-free as possible against the wall of the insulator.

Preferably, the push-push sleeve consists of two half-shells. Two

Half shells can be easily wrapped around a field control body and then joined together. The field control body could project radially on the plug-in section-side end and on a plug-in section-side thickening of the insulating body abut radially and axially. As a result, electric fields are controlled particularly well.

The insulating body could be modularly extended at the head section by an insulating body extension, wherein the insulating body extension is positively, force and / or materially connected to the head portion. The

Insulator extension can as a separate component on or to the

Insulator positively slid and / or glued.

Preferably, a special elastomer is used as the adhesive. The

Insulator extension is preferably made of the same material as the insulating body. The insulating body itself is preferably formed tapered in the direction of Isolierkörperverlängerung, wherein the

Insulating body extension can be cylindrical. As a result, a total of slender construction of the implementation is realized on the open air side.

It could be a bevel or chamfers on the insulator and / or provided on the Isolierköperverlängerung. This will be the

Connect, in particular the pushing together, the insulator and the Isolierkörperverlängerung facilitates.

An arrangement could include a transformer or other equipment as a liquid-filled transformer, such. B. a switching device, and a

Implementation of the type described here include. It is conceivable to combine individual features of the implementation and / or the transformer or the other system with each other.

Such an arrangement allows the simple execution of tests or even a permanent connection to the transformer or to said other system. In the drawing show

Fig. 1 is a sectional view of an arrangement having a passage and a

 Includes a wall with an opening, wherein the breakthrough is associated with a permanently mounted fitting, wherein the implementation passes through the breakthrough with its insertion and plugged with its conductor electrically contacting in a receptacle of the valve, Fig. 2 is a detail view of a connection point at which the Insulator of the

 Implementation is glued according to FIG. 1 with an insulating body extension,

3 is a sectional view of a two-part mounting flange, wherein the radially inner part is provided with a field control body and a dome with a blind hole and wherein a radially outer part surrounds the inner part,

Fig. 4 is a perspective view of the insulating body made of silicone, which is connected to a mounting flange, two views of an arrangement, which are provided with a passage, the insulating body with an insulator extension

an exploded view of an assembly comprising a wall with a fitting and a passage, wherein the fitting is associated with an adapter plate which is reversibly connectable to a mounting flange of the implementation, 7 is a side view of the arrangement of FIG. 6, in which a push-push sleeve is shown,

Fig. 8 is a side view of the arrangement of FIG. 7, in which the

 Push-push sleeve is attached, and

9 is a side view of the arrangement of FIG. 8, in which the

 Implementation is inserted. Fig. 1 shows a passage 1 for insertion into a lying behind a wall 2 receptacle 3 and for electrically contacting the same. The bushing 1 is further inserted into an insulator of a fitting 11.

The bushing 1 comprises an insulating body 4 with a plug-in section 5 and a head section 6 opposite thereto, a conductor 7 being received in the insulating body 4 and extending at least from the head section 6 to the plug-in section 5.

The conductor 7 is formed as a pipe or rod made of aluminum or copper. The conductor 7 protrudes from the insertion section 5 and the insulating body 4 out.

The insulating body 4 is guided through a mounting flange 8 and extends on both sides of the mounting flange 8, so that the

Plug-in portion 5 and the head portion 6 lie on different sides of the mounting flange 8.

The insulating body 4 is made of an elastic and elastomeric material. The insulating body 4 is integrally formed. The head portion 6 and the insertion portion 5 are integrally molded or injected. The insulating body 4 is made in one piece from an elastic and elastomeric material, wherein in the insulating body 4, a field control body 13 is integrated with conductive or field-controlling properties and wherein the field control body 13 in one piece from the insertion section 5 to

Head portion 6 extends through the mounting flange 8.

The conductor 7 is in electrically conductive contact with the receptacle 3. The insulating body 4 has radially projecting shielding lips. The mounting flange 8 rests on the side of the Einsteckabschnitts 5 on an adapter plate 10 and is connected thereto. The adapter plate 10 in turn is connected to a fitting 11 which is permanently associated with an opening 12 in the wall 2. The valve 11 is fixedly arranged on the wall 2 and modular with the

Adapter plate 10 connectable, wherein subsequently the

Mounting flange 8 on the adapter plate 11 can be fastened.

The receptacle 3 for the conductor 7 is an integral part of the fitting 11. In that regard, the implementation shown here 1 to an existing fitting 11, especially for test purposes, are easily mounted.

Fig. 2 shows in a detailed view that the insulating body 4 of the bushing 1 is modularly extended at the head portion 6 by a Isolierkörperverlängerung 9, wherein the Isolierkörperverlängerung 9 is materially connected to the head portion 6.

The insulating body extension 9 is connected to the head portion 6 by a

Bonded special elastomer. The insulating body extension 9 is cylindrical, the insulating body 4 is conical. By a Chamfer 9a is a slight mating of the insulating 4 and the Isolierkörperverlängerung 9 possible.

Fig. 3 shows a mounting flange which is formed in several parts, namely a radially inner part 8a and a radially outer part 8b.

The one-piece fastening flange 8 according to FIG. 4 or a part 8 a of a fastening flange according to FIG. 3 is provided with a field control body 13

connected, wherein the one-piece mounting flange 8 or the part 8a and the field control body 13 are integrated as a prefabricated component in the insulating body 4.

The mounting flange 8 of FIG. 4 is formed as a square or rectangular plate. The plate can also be round. The mounting flange 8 has means, namely passages 15, for reversibly securing to the adapter plate 10.

An arrangement showing a wall 2 and a duct 1 is shown in FIG. 5 in two views.

3 and 6 show that in the mounting flange 8 or a part 8a of a mounting flange at least one spring means 6 is at least partially accommodated, which when expanding in the direction of

Insertion section 5 spring force deployed.

Fig. 3 shows concretely that in a tubular dome 8c of the part 8a of a multi-part mounting flange a plurality of blind holes 17 are formed, which can receive the spring means 16. Fig. 6 shows, with reference to a one-piece mounting flange 8, that the spring means 16 are formed as tubular spring assemblies and in the direction of Insertion section 5 are expandable. The region 16a in Fig. 6 is intended to indicate that a plurality of spring means 16 should be arranged parallel to each other. 6 and 1 show that the field control body 13 is surrounded by a pressure sliding sleeve 18 which presses the field control body 13 radially and axially against the insulating body 4 by the spring means 16 in the axial direction on the

Pressure sliding sleeve 18 spring force exerts. FIGS. 1 and 3 show that the field control body 13 projects radially on the insertion-side end and abuts radially and axially on an insertion-side thickening of the insulating body 4.

The bushing 1 described here has an insulating body 4 which, in the region of its passage through the fastening flange 8, is tapered both relative to the plug-in section 5 and to the head section 6. In this way, in combination with the fastening flange 8, it forms a circumferential recess 14 into which a field control body 13 can engage and surround the insulating body 4.

The recess 14 is annular-like or formed as a bore. The

Recess 14 is formed predominantly in a section of the head portion 6 of the insulating body 4, which is free of shield lips. This section is cylindrical.

FIGS. 7 to 9 show arrangements with a transformer in several phases of an assembly. 9 shows a completed arrangement, comprising a transformer 19 with a wall 2, wherein the wall 2 is permanently assigned a fitting 11, and a bushing 1 of the type described here, which is fixed by means of a mounting flange 8 to the fitting 11. Preferably, an adapter plate 10 between the valve 1 and the mounting flange 8 is arranged. The adapter plate 10 is formed as a separate component to the mounting flange 8.

LIST OF REFERENCE NUMBERS

1 implementation

 2 wall

 3 recording

 4 insulator

 5 insertion section

 6 head section

 7 conductors

 8 One-piece mounting flange (multipartly designated as 8a and 8b)

8c dome of 8 or 8a

 9 Insulator extension

 9a chamfer

 10 adapter plate

 11 Valve with holder and insulator

 12 breakthrough

 13 field control body

 14 recess, ringpole-like

 15 passage

 16 spring means

 17 blind hole

 18 push-pull sleeve

 19 transformer

Claims

claims 1. bushing (1) for insertion into a behind a wall (2) lying receptacle (3) and for electrically contacting the receptacle (3) comprising an insulating body (4) with a plug-in portion (5) and a head portion opposite thereto (6 ), in the  Insulating body (4) a conductor (7) is received, which extends at least from the head portion (6) to the insertion portion (5), wherein the insulating body (4) through a mounting flange (8) is guided through and on both sides of the mounting flange (8 ) so that the male portion (5) and the head portion (6) are on different sides of the attachment flange (8),  characterized in that  the insulating body (4) is made in one piece from an elastic and elastomeric material, wherein a field control body (13) is integrated into the insulating body (4) and wherein the field control body (13) is in one piece from the insertion portion (5) to the head portion (6 ) extends through the mounting flange (8). 2. Implementation according to claim 1, characterized in that the  Mounting flange (8, 8a, 8b) is formed in one or more parts and / or means for reversible attachment to a wall (2) or an adapter plate (10). 3. Bushing according to claim 1 or 2, characterized in that the mounting flange (8) rests on the side of the insertion portion (5) on an adapter plate (10) and / or connected thereto or is connectable. Feedthrough according to one of the preceding claims, characterized in that the mounting flange (8) or a part (8a) of a mounting flange is connected to a field control body (13), wherein the mounting flange (8) or the part (8a) and / or the field control body (13) as a prefabricated component in the Insulating body (4) are integrated. Feedthrough according to one of the preceding claims, characterized in that in the mounting flange (8) or a part (8a) of a mounting flange at least one spring means (16) is at least partially received, which unfolds when expanding in the direction of the insertion portion (5) spring force. Bushing according to Claim 5, characterized in that one or more blind holes (17) are or are formed in a tubular dome (8c) of a fastening flange or a part (8a) of a fastening flange, which or which spring means (16) receives or record, wherein the one or more spring means (16) is designed as a tubular spring package or tubular spring assemblies and are and in the direction of the insertion portion (5) is expandable or are. Bushing according to claim 5 or 6, characterized in that the field control body (13) of a one or more parts Pressure sliding sleeve (18) is surrounded, which presses the field control body (13) radially and / or axially against the insulating body (4) by the spring means (16) in the axial direction on the push-push sleeve (18) Spring force exerts. Bushing according to one of the preceding claims, characterized in that the field control body (13) on einsteckabschnittseitigen end projecting radially and on a einsteckabschnittseitigen thickening of the insulating body (4) rests radially and axially. 9. Implementation according to one of the preceding claims, characterized  characterized in that the insulating body (4) is modularly extended at the head section (6) by an insulating body extension (9), wherein the insulating body extension (9) is positively, force and / or materially connected to the head section (6), and / or a chamfer (9a) on the insulating body (4) and / or on the Isolierkörperverlängung (9) is provided. 10. Arrangement comprising a transformer or other system as a liquid-filled transformer, such. B. a switching device, and a bushing according to one of the preceding claims.