DE2160256C3

DE2160256C3 - Insulated high-voltage connector that can be released under load

Info

Publication number: DE2160256C3
Application number: DE19712160256
Authority: DE
Inventors: Rudolf Dipl.-Ing 4000 Düsseldorf Körber
Original assignee: Feiten & Guilleaume Schaltanlagen 4150 Krefeld GmbH
Current assignee: Feiten & Guilleaume Schaltanlagen 4150 Krefeld GmbH
Filing date: 1971-12-04
Publication date: 1978-02-23

Description

Die als Schieber ausgebildete Betätigungsvorrichtung des Vakuumschalters und eine die Bewegung des Schiebers veranlassende einvulkanisierte Druckblase sind vorteilhafterweise so günstig inneihalb einer Steckvorrichtungshälfte angeordnet, daß die äußeren Abmessungen der Vorrichtung nicht nennenswert beeinflußt werden (Patentanspruch 3). Die ineinandergreifenden Steckvorrichtungsteile aus unterschiedlichen Materialien liegen durch eine leichte Konizität mit dem nötigen Anpreßdruck aufeinander, so daß die Fuge spannungsfest und wasserdicht allen Beanspruchungen eines Unterflureinsatzes gerecht wird (Patentansprüche 4 und 5).The actuating device of the vacuum switch, which is designed as a slide, and the movement of the The vulcanized pressure bladder causing the slide is advantageously so favorable within a Plug device half arranged that the external dimensions of the device are not significant be influenced (claim 3). The interlocking connector parts from different Materials are due to a slight conicity with the necessary contact pressure on each other, so that the joint tension-proof and watertight meets all demands of an underfloor insert (patent claims 4 and 5).

Die Steckvorrichtung bietet ferner im gesteckten Zustand einen absoluten Berührungsschutz, da die leitende Schicht die gesamte geerdete Außenfläche der Steckvorrichtungshäiften umgibt.The plug-in device also offers absolute protection against accidental contact when plugged in, since the conductive layer surrounds the entire grounded outer surface of the connector shafts.

E«n Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgerden näher beschrieben. Es zeigtAn embodiment of the invention is shown in the drawings and will be described in more detail below described. It shows

Fig. 1 eine Hochspannungssteckvorrichtung im gesteckten Zustand, im Schnitt undFig. 1 shows a high-voltage connector in the plugged-in state, in section and

Fig. 2 eine Hochspannungssteckvorrichtung, bei der ein Steckvorrichtungsteil eine Muffe ist, in perspektivischer Ansicht.Fig. 2 shows a high-voltage connector in which a connector part is a sleeve, in perspective view.

Nach Fig. 1 besteht die Hochspannungssteckvorrichtung aus zwei isolierten .Steckvorrichtungshäiften 2 und 3. Die Steckvorrichtungshälfte 2 dient einmal der Aufnahme eines Anschlußkabels J, dessen blanker Leiter in einer Kabelaufnahmearmatur 20 mittels einer Kontaktschraube 23 festgesetzt ist. Mit dieser Kabelaufnahmearmatur ist ein zu einer Kontakttulpe 7 gehörendes Gegenlager 19 verbunden. Die unter Federdruck stehende Kontakttulpe stellt die Verbindung mit einer Gleithülse 6 her, welche im Inneren ein an einem Haltcstift 9 befindliches Schleifkontaktstück 8 enthält. Der Haltestift ist hierbei von einer Druckfeder 15 umgeben, deren eines Ende im Inneren des Schleifkontaktstücks 8 einen Anschlag findet und deren anderes Ende in seiner Ausdehnung durch das Gegenlager 19 für die Kontakttulpe 7 begrenzt wird. Die Gleithülse 6 rastet mit ihrem Ende federnd in einer Einkerbung 16 eines feststehenden Kontaktstücks 4 ein, welches zur Steckvorrichtungshälfte 3 gehört.According to Fig. 1, there is the high-voltage connector from two isolated .Steckvorrichtungshäifte 2 and 3. The connector half 2 is used once Receiving a connection cable J, the bare conductor in a cable receiving fitting 20 by means of a Contact screw 23 is fixed. With this cable fitting a counter bearing 19 belonging to a contact tulip 7 is connected. The contact tulip, which is under spring pressure, establishes the connection with a sliding sleeve 6, which has a sliding contact piece 8 located on a holding pin 9 inside contains. The retaining pin is surrounded by a compression spring 15, one end of which is inside the Sliding contact piece 8 finds a stop and the other end in its extension through the Counter bearing 19 for the contact tulip 7 is limited. The sliding sleeve 6 latches with its end resiliently in a Notch 16 of a stationary contact piece 4 which belongs to the plug-in device half 3.

Die Kabelaufnahmearmatur 20 steht außerdem über eine Verbindungsleitung 10 mit einem feststehenden Kontaktstück 11 eines Vakuumschalters 12 in Verbindung. Das hierzu gehörende bewegliche Kontaktstück 13 des Vakuumschalters ist einmal elektrisch über eine Verbindungsleitung 14 mit dem Haltestift 9 und andererseits mechanisch mit einer Betätigungsvorrichtung verbunden, die aus einem Schieber 17 und einer einvulkanisierten Druckblase 18 besteht.The cable receiving fitting 20 is also via a connecting line 10 with a stationary one Contact piece 11 of a vacuum switch 12 in connection. The associated movable contact piece 13 of the vacuum switch is electrically connected to the retaining pin 9 and via a connecting line 14 on the other hand mechanically connected to an actuating device, which consists of a slide 17 and a vulcanized pressure bladder 18 consists.

Die Steckvorrichtungshälfte 2 ist mit einer öse 5 ausgestattet, die das Abziehen dieser Steckvorrichtungshälfte von der anderen Steckvorrichtungshälfte 3 mit einem geeigneten Werkzeug ermöglicht Die Steckvorrichtungshälfte 3 besitzt einen leicht konisch geformten Stutzen, dessen Außenfläche mit der entsprechenden Innenfläche der Steckvorrichtungshälfte 2 eine spannungsfeste und wasserdichte Trennfuge 21 bildet. Zwischen dem Anschlußkabel 1 und der entsprechenden Steckvorrichtungshälfte 2 befindet sich ebenfalls eine spannungsfeste und wasserdichte Trennfuge, die hier mit 22 bezeichnet ist.The connector half 2 is equipped with an eyelet 5, which allows the pulling off of this connector half from the other connector half 3 with a suitable tool allows the Connector half 3 has a slightly conically shaped nozzle, the outer surface of which with the Corresponding inner surface of the plug-in device half 2, a tension-proof and watertight parting line 21 forms. Between the connecting cable 1 and the corresponding connector half 2 is located also a tension-proof and watertight parting line, which is denoted by 22 here.

Nach Fig. 2 kann die Steckvorrichtungshälfte 3 Teil einer Abzweigmuffe 24 sein. Mit 25 sind die beiden Kabelenden bezeichnet. Von der Steckvorrichtungshälfte 2 sind die öse 5 und das Anschlußkabel 1 dargestelltAccording to Fig. 2, the connector half 3 part a branch sleeve 24. The two cable ends are denoted by 25. From the connector half 2, the eyelet 5 and the connecting cable 1 are shown

Die Wirkungsweise der Hochspannungssteckvorrichtung ist folgende:The high-voltage connector works as follows:

Bei geschlossener Steckvorrichtung umfaßt das Ende der in der Steckvorrichtungshälfte 2 befindlichen Gleithülse das feststehende Kontaktstück 4 der Steck vorrichtungshäJfie 3. Der Hauptstrompfad ist somit über das Anschlußkabel 1, die Kabelaufnahmearmatur 20, das Gegenlager 19 für die Kontakttuipe 7, die Kontakttulpe 7, die Gleithülse 6 und das feststehende Kontaktstück 4 geschlossen. Der hierzu befindliche Nebenstrompfad verläuft von der Kabelaufnahmearmatur 20 über die Verbindungsleitung 10, die Kontaktstükke 11 und 13 des Vakuumschalters 12, die weitere Verbindungsleitung 14 zum Haltestift 9, der über das Schleifkontaktstück 8 mit der Gleithülse 6 in Verbindung steht. Im geschlossenen Zustand fließt somit der Strom über beide Strompfade. Bei der Abziehbewegung wird die Gleithülse 6 aus der Kontakttulpe 7 gelöst und damit der Hauptstrompfad unterbrochen. Von diesem Augenblick an übernimmt für kurze Zeit der Nebenstrompfad den gesamten Strom. Während die Gleithülse 6 bei der weiteren Abziehbewegung noch in der Einkerbung 16 verbleibt, wird das Schleifkontaktstück 8 innerhalb der Gleithülse 6 vom feststehenden Kontaktstück 4 fortbewegt, wobei die Druckfeder 15 bis zur Blockbildung zusammengepreßt wird. Sobald die Blockbildung dieser Druckfeder erreicht ist, sind beide Steckvorrichtungshäiften so weit voneinander getrennt worden, daß der unter der Einwirkung einer einevulkanisierten Druckblase 18 stehende Schieber 17 frei wird und dem Druck nachgeben kann. An dem Schieber 17 ist das bewegliche Kontaktstück 13 des Vakuumschalters 12 angelenkt, das sich bei der Schieberbewegung vom feststehenden Kontaktstück 11 des Vakuumschalters trennt. Damit ist auch der Strom im Nebenstrompfad unterbrochen. Bei weiterer Abziehbewegung erfolgt nunmehr die stromlose Trennung der Gleithülse 6 vom feststehenden Kontaktstück 4.In the closed plug-in device, the end of the sliding sleeve located in the plug-in device half 2 comprises the fixed contact piece 4 of the plug vorrichtungshäJfie 3. The main current path is therefore through the connecting cable 1, the cable mounting part 20, the thrust bearing 19 for the Kontakttuipe 7, the contact tulip 7, the slide sleeve 6 and the fixed contact piece 4 is closed. The associated auxiliary current path runs from the cable fitting 20 via the connecting line 10, the contact pieces 11 and 13 of the vacuum switch 12, the further connecting line 14 to the retaining pin 9, which is connected to the sliding sleeve 6 via the sliding contact piece 8. In the closed state, the current flows through both current paths. During the pull-off movement, the sliding sleeve 6 is released from the contact tulip 7 and the main current path is thus interrupted. From this moment on, the secondary current path takes over the entire current for a short time. While the sliding sleeve 6 still remains in the notch 16 during the further withdrawal movement, the sliding contact piece 8 is moved within the sliding sleeve 6 by the stationary contact piece 4, the compression spring 15 being compressed until the block is formed. As soon as the block formation of this compression spring has been achieved, the two plug-in device halves have been separated from one another so far that the slide 17, which is under the action of a vulcanized pressure bubble 18, is free and can yield to the pressure. The movable contact piece 13 of the vacuum switch 12 is hinged to the slide 17 and separates from the stationary contact piece 11 of the vacuum switch when the slide is moved. This also interrupts the current in the bypass path. In the event of a further withdrawal movement, the sliding sleeve 6 is now separated from the stationary contact piece 4 in a currentless manner.

Die Verbindung der beiden Steckvorricht'ingshälften geschieht in rückläufiger Reihenfolge im spannungslosen Zustand.The connection of the two halves of the plug-in device occurs in reverse order in the de-energized state Status.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims

Patent claims:

1. Insulated high-voltage connector that can be released under load with main contact pieces that open without power and a circuit breaker that takes over the load interruption, characterized in that that as a circuit breaker a vacuum switch, which is in a bypass path is arranged, is used that the movable contact piece (13) of the vacuum switch (12) with an actuating device (17, 18) that is constantly mechanically loaded in the disconnection direction which is then released by the moving parts of the high-voltage connector when the main contact pieces have opened the main current pad.

2. High-voltage connector according to claim I, characterized in that the fixed Contact piece (4) of the fixed connector half is designed as a lead-through bolt is, which at its free end has a notch (16) that the main current path of the other The plug-in device half consists of a retaining pin (9) fixed in the housing, which is inserted at the free end Carrying sliding contact piece (8) and with the other end to the movable contact piece (13) of the Vacuum switch (12) is in connection, from a sliding sleeve (6) surrounding the retaining pin (9) whose inner wall rests against the sliding contact piece (8), the free end of which is connected to the notch (16) of the Contact piece (4) of the fixed connector half cooperating latching device and the other end with one with the fixed contact piece (11) of the vacuum switch (12) and the connecting cable (1) associated contact tulip (7) cooperates, consists and that between the sliding contact piece (8) and that cooperating with the contact tulip (7) At the end of the sliding sleeve (6) a compression spring (15) surrounding the retaining pin (9) is arranged.

3. Hochsoannungssteckvorrichtung according to claim 1 or 2, characterized in that the Actuating device of the vacuum switch (12) one with the movable contact piece (13) in Connected slide (17) has, which by the pressure of a vulcanized pressure bubble (18) in the closed state of the connector against the outer wall of the housing of the stationary Connector half is pressed.

4. High-voltage connector according to one of claims 1 to 3, characterized in that one plug part is made of an elastic plastic and the other plug part is made of a thermoset.

5. High-voltage connector according to one of claims I to 4, characterized in that the outer and inner surfaces of the connector halves (2, 3) with a conductive layer except for the elastic tension-resistant and watertight parting line (21,22) are covered, the inner surfaces connected to the live parts and the outer surfaces are earthed.

6. High-voltage connector according to one of claims 1 to 5, characterized in that the main contact piece of the fixed connector half, designed as a lead-through bolt (3) is the branching part of a branch sleeve (24).

The invention relates to an insulated high-voltage plug device which can be released under load and has a power-free opening Main contact pieces and a circuit breaker that takes over the load interruption. Such a connector is already known from US Pat. No. 3,513,425. The main ingredients of this Plug-in devices are modular, so that they can be used in underground electrical distribution facilities is given in a variety of ways. Essentially, this plug-in device includes two Cable-terminating elements between which a middle piece is pluggable. The center piece is differently designed, depending on the type of shutdown to take place. In addition to a current-limiting and safety function, the shutdown can also take place under load. For this purpose, the middle piece is with a Switch provided with an arc extinguishing agent which prevents the formation of arcing Should keep gas within limits. However, this switch is used to operate the connector switched off, so that two processes, namely switching off and disconnecting the connector, are required are.

The invention is based on the object of developing a high-voltage connector of the type mentioned that switching off the Circuit breaker inevitably takes place when pulling the connector.

According to the invention, this object is achieved in that the circuit breaker is a vacuum switch, which is shown in a secondary current path is arranged, that the movable contact of the vacuum switch is used is in connection with an actuating device that is constantly mechanically loaded in the disconnection direction, which is then released by the moving parts of the high-voltage connector when the Main contact pieces have opened the main current path.

The advantages achieved with the invention consist in particular in the implementation of an extremely space-saving and inexpensive load connector that is durable in use and increased in spite of such Requirements does not pose a threat to those entrusted with the separation movement. It is also an electrical switching device known, in particular as a connector with a Arc extinguishing device is formed (DT-OS 20 58 670). When operating such a switching device under high voltage fault conditions, a Established a circuit in which an electric arc occurs. Since the arc between the surfaces of the arc-extinguishing material of the plug tip and the sleeve has to burn, large amounts of evaporated material, which not only leads to destruction if the capacity of the connector is too low the same lead, but also those entrusted with the handling of such a connector can seriously endanger. To prevent this, a chamber system with a valve is proposed, which together create a sufficient volume for the generated when connecting the connector parts Create gases and the gases generated when the connector parts are disconnected under load hold back.

Further advantageous embodiments of the subject matter of claim 1 are the subclaims refer to.