CN116034446A

CN116034446A - High-voltage circuit breaker and method for producing a high-voltage circuit breaker

Info

Publication number: CN116034446A
Application number: CN202180056451.5A
Authority: CN
Inventors: M·巴茨; L·宾纳; R·格林勒; S·赫布纳; V·莱曼; S·林克; D·乌多夫西奇
Original assignee: Siemens Energy Global GmbH and Co KG
Current assignee: Siemens Energy Global GmbH and Co KG
Priority date: 2020-08-12
Filing date: 2021-07-23
Publication date: 2023-04-28
Also published as: WO2022033841A1; DE102020210183A1; EP4169051A1; JP2023537075A

Abstract

The invention relates to a high-voltage circuit breaker (1) and a method for producing a high-voltage circuit breaker (1), comprising at least one vacuum interrupter (2) which is supported by at least one support (3, 4) of the high-voltage circuit breaker (1). At least one vacuum interrupter (2) is connected inseparably to at least one support (3, 4). The inseparable connection is achieved by means of an intermediate piece (7), in particular by electron beam welding of the same material and/or by spraying and/or barrel plating of different materials.

Description

High-voltage circuit breaker and method for producing a high-voltage circuit breaker

Technical Field

The invention relates to a high-voltage circuit breaker and a method for producing a high-voltage circuit breaker, comprising at least one vacuum interrupter which is supported by at least one support of the high-voltage circuit breaker.

Background

High voltage circuit breakers are designed to switch voltages in the voltage range up to 1200 kilovolts and in the current range up to several kiloamps. For example, a high voltage circuit breaker includes a housing having at least one switch contact on a carrier. The housing is, for example, an insulator, in particular made of ceramic, silicone and/or composite material, which is, for example, formed in the form of a cylindrical hollow body, in particular with umbrella-shaped ribs on the outer circumference, in order to lengthen the creepage current. Unlike Live Tank high-voltage circuit breakers, in which the housing is grounded and is made of, for example, a hollow-cylindrical metal Tank, at least one switching contact is arranged inside it.

The switch contact comprises at least two contact members, such as a fixed contact member and a movable contact member, which are made of an electrically conductive material, such as steel, aluminum and/or copper. Alternatively or additionally, the switch contact comprises, for example, at least two movable contacts, wherein the embodiment with two movable contacts is similar to the fixed contact and the movable contact related to the invention and is not described further mainly for the sake of simplicity. The contact piece of the switching contact is arranged in the high-voltage circuit breaker or is supported by a support, in particular in a movable or fixed manner, and is sealed, in particular hermetically, by a housing.

The housing being filled with insulating or switching gas, in particular SF ₆ And/or Clean Air (Clean Air). SwitchThe contacts comprise, for example, rated current and/or arcing contacts and are electrically isolated from the particular equipment (e.g., the driver) of the high voltage circuit breaker and from the environment by the switching gas. Switching gases, e.g. SF ₆ Harmful to the weather and/or may contain toxic components. In order to prevent the switching gases from escaping from the high-voltage circuit breaker, the housing must be hermetically sealed permanently, which is complex, expensive and cost-intensive. At the end of the life cycle of the high voltage circuit breaker, environmentally friendly disposal, in particular of the switching gases, is also expensive and cost-intensive. An environmentally friendly alternative is to use a vacuum tube in the conventional housing described above.

As already mentioned, the use of a conventional housing makes it possible to replace high-voltage circuit breakers in the power network in a simple and cost-effective manner, and to produce high-voltage circuit breakers in a simple and cost-effective manner, in particular in large batches. Replacement of environmentally hazardous switching gases, e.g. SF, with environmentally friendly switching gases, e.g. clean air, i.e. dry, purified air ₆ It is necessary to replace the rated current and arc contact system with a vacuum switching tube in a conventional housing to maintain the necessary insulation distance.

The vacuum interrupter is arranged mechanically stable and electrically conductive inside the housing and is connected between at least two external electrical connections, wherein the electrical connections are formed, for example, in the form of connection flags (Anschlunsfahne) for connecting high-voltage lines, generators and/or consumers.

For example, the construction of vacuum switching tubes for high-voltage circuit breakers is known from EP 0 102 317 A2. The vacuum interrupter comprises a circular, right circular cylindrical shaped housing, the interior of which is evacuated. For example, the housing is composed of two identical, straight cylindrical halves formed of ceramic or ceramic parts, which are joined together at the center of the housing by a metal cylinder or by a metal part with a transition piece. The transition piece is designed as a shielding electrode or shielding means in the housing.

The vacuum interrupter includes at least one electrical contact for switching, the electrical contact having a fixed contact and a movable contact. The contact is formed in a disk shape in the vacuum interrupter and is enclosed in vacuum. The contacts are guided outwards in the form of bolts and are each electrically connected to an external electrical connection, for example in the form of a connection flag of a high-voltage circuit breaker. The movable contact is guided in a movable manner in a vacuum-tight manner by means of a bellows (Faltenbalg) and is supported in the vacuum interrupter.

Upon engagement, the movable contact moves toward the fixed contact until there is mechanical and electrical contact between the contacts. Upon disconnection, the movable contact is moved away from the fixed contact until the electrical contact between the contacts is broken and a sufficient distance to avoid arcing when a voltage is applied. At high voltages, a large distance is required between the contacts. The vacuum interrupter is designed to be long to ensure a sufficient distance inside. The cylindrical half of the housing of the vacuum interrupter, which is formed by a ceramic or ceramic component, is composed of several components, for example, which are connected together by a metal component having a transition piece. The transition piece is accordingly designed as a shielding electrode or shielding device in the housing. The ceramic parts of the housing are connected by metal parts, for example made of copper and/or steel, for example by welding.

The coupling of the contacts of the vacuum interrupter, in particular to the carrier for supporting the contacts, is thus effected by a clamping connection to the drive of the high-voltage circuit breaker and/or to the stationary conductive part. For example, the brackets are made of aluminum and/or steel. Aluminum has a low mass and enables the acceleration of the drive to be transmitted to the movable contact with low energy expenditure and enables the fixed contact to be fixed in the high-voltage circuit breaker with low weight of the carrier in a simple and low-cost manner. The contacts of the vacuum interrupter are made of copper, for example, for high current carrying capacity. The connection of the contact elements to the respective carrier, in particular between the aluminum and copper parts, is produced by a clamping connection. The form-fitting clamping connection comprises two electrical transition positions, which lead to an increase in heat generation and electrical losses in the switch. At very high currents, up to several thousand amperes, very high electrical losses may occur and high temperatures in the switch may lead to damage and/or destruction.

Disclosure of Invention

The object of the present invention is to provide a high-voltage circuit breaker and a method for producing a high-voltage circuit breaker, in particular a high-voltage circuit breaker as described above, which solve the problems as described above. In particular, the object is to provide a high-voltage circuit breaker in which at least one vacuum interrupter is arranged or supported in a mechanically stable manner, which has low electrical losses in the on-state and low heating, in particular at high currents.

According to the invention, the specified technical problem is solved by a high-voltage circuit breaker having the features according to claim 1 and/or by a method for producing a high-voltage circuit breaker, in particular the previously described high-voltage circuit breaker, according to claim 11. Advantageous embodiments of the high-voltage circuit breaker according to the invention and/or of the method according to the invention for producing a high-voltage circuit breaker, in particular the previously described high-voltage circuit breaker, are given in the dependent claims. The subject matter of the independent claims may here be combined with each other and with the features of the dependent claims and with each other.

The high voltage circuit breaker according to the invention comprises at least one vacuum interrupter which is supported by at least one support of the high voltage circuit breaker. The at least one vacuum switching tube is inseparably connected to the at least one support.

Unlike the detachable or releasable clamping connection and/or screw connection, the inseparable connection of the at least one vacuum interrupter to the at least one support enables a high mechanical stability, a good current flow with low transition resistance, whereby in particular in the case of large current flows in the range of up to several kiloamperes, a lower electrical loss and less heat generation and lower temperatures can be achieved. Thus, damage and/or destruction of the high voltage circuit breaker with the vacuum interrupter can be avoided or prevented. The inseparable connection can be produced simply and at low cost, and the high mechanical stability results in a high durability and a life with high reliability of the high-voltage circuit breaker.

The at least one vacuum interrupter may include at least one fixed contact and at least one movable contact, with at least one bracket on one side of the at least one fixed contact and at least one bracket on one side of the at least one movable contact. Alternatively or additionally, two movable contacts may be included. The inseparable connection of the at least one stationary contact and/or the at least one movable contact, respectively, to the carrier achieves the advantages described above.

The at least one vacuum interrupter can be connected inseparably to the at least one support by means of a welded connection, in particular by means of an electron beam welded connection. The welded connection, in particular the electron beam welded connection, has a high mechanical stability, can be produced easily and at low cost, and enables good current flow to be produced on the welded connection, with low electrical losses and low heating, in particular at high currents.

The at least one vacuum interrupter can be connected to the at least one support in an inseparable manner via the intermediate piece. The intermediate piece enables a simple, low-cost, mechanically stable connection of the contact piece of the vacuum interrupter to the carrier, in particular with low transition resistance.

The intermediate part may comprise at least two, in particular exactly two regions, in particular one region made of copper and one region made of aluminum, wherein the two regions are in particular connected to one another in a material-fitting, inseparable manner, in particular by spraying and/or barrel plating. The intermediate piece having the aforementioned characteristics makes it possible to achieve a mechanically stable connection of the contact piece of the vacuum interrupter to the support, in particular with low transition resistance, at low cost.

In particular, the material-matched connection of the two regions, in particular of the aluminum region and of the copper region, produced by sputtering and/or barrel plating, results in a middle part having high mechanical stability and low electrical resistance.

At least one vacuum interrupter, in particular at least one stationary contact and at least one movable contact of the at least one vacuum interrupter, may each be connected to the intermediate part, in particular by electron beam welding, and/or the intermediate part may comprise two regions of different materials, wherein the two regions may be connected to each other in a matched, inseparable manner by means of a spray and/or barrel coating material, and/or the intermediate part may each be connected to the at least one carrier in a non-separable manner, in particular by electron beam welding. The advantages described above are associated with this, in particular with high-voltage circuit breakers having high reliability and durability, with little heating in the case of low electrical losses via the high-voltage circuit breaker in the on-state, and therefore with a low risk of damage and/or destruction of the high-voltage circuit breaker, which is caused by excessive heat which cannot be released into the environment fast enough.

The at least one vacuum interrupter, in particular the at least one stationary contact and the at least one movable contact of the at least one vacuum interrupter, may be made of and/or comprise copper, and/or the intermediate piece may comprise copper areas, which may be inseparably connected with the copper of the vacuum interrupter, in particular by electron beam welding, and/or the support may be made of and/or comprise aluminum, respectively, and/or the intermediate piece may comprise aluminum areas, which may be inseparably connected with the aluminum of the support, in particular by electron beam welding. A stable form-fitting connection between aluminum and copper is difficult to produce. The intermediate piece with two regions (one made of aluminum and one made of copper) can be produced simply and at low cost by spraying and/or barrel plating. In particular, electron beam welding between aluminum and between copper and copper can be achieved simply and at low cost without mechanical loading, for example by sputtering and/or barrel plating. By using intermediate parts, in particular produced by spraying and/or barrel plating, a material-fitted connection of the vacuum interrupter with the support, which has the advantages described above, can be produced simply and inexpensively without mechanical loading and destruction of the vacuum interrupter and/or the support.

High voltage circuit breakers may be designed for switching voltages in the range of several kilovolts to 1200 kilovolts. The advantages described above occur in particular in high-voltage circuit breakers designed for switching the aforementioned current and/or voltage ranges.

The high voltage circuit breaker may comprise a switching gas, in particular SF ₆ And/or clean air, and the vacuum switching tube and/or the at least one support may be spatially surrounded by a switching gas. The vacuum interrupter in a high-voltage circuit breaker can thus be operated more safely and has a good electrical isolation with respect to components which are not provided for the flow of current, in particular for safety reasons.

The at least one support can be designed for mechanically stable arrangement of the vacuum interrupter in the housing, in particular in the closed insulator housing, in particular with a spatially fixed support and/or with a support which is driven in a movable manner, in particular by a drive. This is associated with the advantages of the high-voltage circuit breaker described above, in particular high reliability and long life.

The method according to the invention for producing a high-voltage circuit breaker, in particular the high-voltage circuit breaker described above, comprises at least one vacuum interrupter which is supported by at least one carrier, wherein the at least one vacuum interrupter is connected inseparably to the at least one carrier, in particular by electron beam welding.

At least one vacuum interrupter, in particular at least one fixed contact and at least one movable contact of at least one vacuum interrupter (which in particular comprises copper) may be connected to the intermediate part, in particular by electron beam welding, respectively, and/or the intermediate part may comprise two regions of different materials, in particular copper and aluminum, wherein the two regions may be connected to each other in a matched, inseparable manner by means of a spray and/or barrel coating material, and/or the intermediate part may be connected to at least one carrier (which in particular comprises aluminum) in a inseparable manner, in particular by electron beam welding, respectively.

The copper region of the intermediate piece can be connected correspondingly to the copper of the contact piece of the vacuum interrupter tube, and the aluminum region of the intermediate piece can be connected correspondingly to the aluminum of the support.

The advantages of the method according to claim 11 for manufacturing a high voltage circuit breaker, in particular the high voltage circuit breaker described above, are similar to those of the high voltage circuit breaker according to claim 1 described above, and vice versa.

Drawings

Embodiments of the present invention are schematically illustrated in fig. 1-3 and described in more detail below.

Here the number of the elements to be processed is,

fig. 1 shows schematically a high-voltage circuit breaker 1 according to the invention in a sectional view from one side, which high-voltage circuit breaker 1 has a vacuum interrupter 2 supported by two supports 3 and 4, wherein the contacts of the vacuum interrupter 2 are connected to the supports 3 and 4, respectively, via an intermediate piece 7, and

fig. 2 shows schematically in an enlarged cross-section an intermediate piece 7 between a stationary contact of the vacuum interrupter 2 and the support 3, and

fig. 3 shows schematically in an enlarged cross-section the intermediate piece 7 between the movable contact piece of the vacuum interrupter 2 and the carrier 4, which carrier 4 has the movable contact disk 5 in the fixed carrier sleeve 6.

Detailed Description

Fig. 1 schematically shows a section of a high-voltage circuit breaker 1 according to the invention, viewed from one side, in a sectional view. The high-voltage circuit breaker 1 comprises a vacuum interrupter 2 with two legs 3 and 4. For example, the vacuum interrupter 2 is designed for switching 35kV and/or up to 145kV. For the sake of simplicity, the individual elements or components of the vacuum interrupter 2 are not shown in detail in the figures. The vacuum interrupter 2 is formed, for example, in a cylindrical shape, with electrically conductive contacts, in particular a movable contact and a stationary contact, which are made, for example, of copper, the ends of which protrude from a ceramic evacuated hollow insulator, wherein the hollow insulator is hermetically sealed on the movable contact side by a metal bellows and on the stationary contact side by a stationary metal disk or a stationary metal cover. The vacuum interrupter includes other elements or components, such as shielding electrodes, which are not discussed in further detail.

In fig. 1, the end of the stationary contact forming the left end of the vacuum interrupter 2 is electrically conductively connected to a spatially fixed support 3. This connection is shown enlarged in fig. 2. The fixed support 3 is formed, for example, as a hollow tube with an outwardly directed fixing flange at one end and an internal fixing plate or disk with ventilation holes at the other end. The bracket 3 is made of aluminum, for example. The mechanically stable, electrically conductive connection between the vacuum interrupter 2 (i.e. the contact element, in particular made of copper) and the carrier 3 (in particular made of aluminum) is difficult to establish by means of a conventional, in particular form-fitting, clamping connection. According to the invention, the mechanically stable, material-matched, electrically conductive connection of the contacts of the vacuum interrupter 2 to the carrier 3 is established by a permanent, i.e. inseparable connection.

Inseparable in this case means that the connection does not loosen without breaking the material, unlike a bolt and/or clamping connection which can be repeatedly established and loosened without permanent material breaking. The material-matched, electrically conductive connection of the contacts of the vacuum interrupter 2 to the carrier 3 takes place, for example, by means of an intermediate piece 7, the intermediate piece 7 being produced, for example, by means of sputtering and/or barrel plating (Spreng-und/oder Walz-Plattieren). In particular, two cylindrical disks are joined together by spraying and/or barrel plating, which have the diameter of the copper contact of the vacuum interrupter 2 at one end and the same diameter at the end of the support 3 as the projections on the inner (ventilated) fastening plate or disk. One disc is made of copper, for example, and one disc is made of aluminum, for example. The intermediate piece 7, which consists of two discs, therefore has one side of the first material 8, which is made in particular of copper, and one side of the second material 9, which is made in particular of aluminum. The intermediate piece 7 thus has two

regions

8 and 9 of different materials, in particular copper and aluminum, which are connected to one another in a mechanically stable, well conductive and inseparable manner, for example by spraying and/or barrel plating.

One side of the first material 8 or in particular the region made of copper is mechanically firmly, electrically conductively and inseparably connected to the fixed contact of the vacuum interrupter 2, for example by electron beam welding. One side of the second material 9 or in particular a region made of aluminum is mechanically firmly, electrically well conductively, inseparably connected to the carrier 3, for example by electron beam welding. The welded connection 10, in particular an electron beam welded connection, is mechanically fixed, stable, permanent, i.e. inseparable, and has a low transition resistance or good electrical conductivity. The fixed contact of the vacuum interrupter 2 is thus mechanically fixedly, stably, permanently, i.e. inseparably and electrically conductively connected to the fixed support 3, and large heating or rapid temperature increases at the connection are avoided under high currents, in particular in the range of several kiloamperes, which can lead to damage and/or failure of the high-voltage circuit breaker 1.

In fig. 3, one end of a movable contact of the vacuum interrupter 2 with a support 4 is shown. The support 4 comprises a spatially fixed support sleeve 6 which is formed as a hollow tube, in particular with an outwardly projecting flange on one side, and into which the vacuum interrupter is fittingly inserted and hermetically sealed, for example by means of a seal, and on the other side the end of the movable contact protrudes into the hollow tube. On one side of the support 3, the vacuum interrupter 2 is similarly inserted into the hollow tube in a matched manner, with the ends of the fixed contacts protruding into the hollow tube-shaped support 3, and is hermetically sealed, for example by a seal, as is shown, for example, in fig. 1 and enlarged in fig. 2. Fig. 3 shows the support 4 enlarged with the associated vacuum interrupter 2, wherein the support 4, in addition to the support sleeve 6, also comprises a movable contact device 5, in particular a contact disk or an inner contact sleeve, which is supported in a spatially fixed support sleeve 6 in a movable manner and is connected to the drive, for example, in particular by a drive rod, which is not shown in the figures for the sake of simplicity. The movable contact device 5 can be driven by a drive when switching and can slide in a form-fitting manner during displacement, in particular in the stationary support sleeve 6. The support 4 can thus be driven in a movable manner by means of a drive, i.e. in the fixed support sleeve 6 the movable contact means 5 can be driven in particular by means of the drive when switching.

The end of the movable contact forming the right-hand end of the vacuum interrupter 2 in fig. 1 is electrically conductively connected to the carrier 4, in particular to the movable contact 5. In fig. 3, the connection is shown enlarged. The holder 4 is made of aluminum, for example, that is to say the fixed holder sleeve 6 and/or the movable contact means 5 are made of aluminum. A mechanically stable, electrically conductive connection between the vacuum interrupter 2 (i.e. the movable contact element, in particular made of copper) and the carrier 4 (i.e. the movable contact device 5, in particular made of aluminum) is difficult to establish by means of a conventional, in particular form-fitting, clamping connection. According to the invention, the contact piece of the vacuum interrupter 2 and the carrier 4, in particular the mechanically stable, material-matched, electrically conductive connection with the movable contact device 5, are established by a permanent, i.e. inseparable connection.

In this case, as previously described and as will be further used, inseparable also means that the connection will not be released without breaking the material, unlike a bolt and/or clamping connection which can be repeatedly established and released without permanent material breaking. The contact piece of the vacuum interrupter 2 is connected to the carrier 4, in particular to the material of the movable contact device 5, in an electrically conductive manner, for example, by means of an intermediate piece 7, the intermediate piece 7 being produced, for example, by means of spraying and/or barrel plating. In particular, the two cylindrical disks are joined by spraying and/or barrel plating, which have the diameter of the copper contact of the vacuum interrupter 2 at one end and have the same diameter as the projections on the movable contact device 5, in particular the contact disks or the inner contact sleeve. One disc of the intermediate member 7 is made of copper, for example, and one disc of the intermediate member 7 is made of aluminum, for example. The intermediate piece 7, which consists of two discs, therefore has one side of the first material 8, which is made in particular of copper, and one side of the second material 9, which is made in particular of aluminum. Thus, as described above for the intermediate piece 7 of the support 3, the intermediate piece 7 has two

regions

8 and 9 of different materials, in particular copper and aluminum, which are mechanically stably, electrically well-conductively and inseparably bonded to one another, for example by spraying and/or barrel plating.

One side of the first material 8 or in particular the region made of copper is mechanically firmly, electrically conductively and inseparably connected to the movable contact of the vacuum interrupter 2, for example by electron beam welding. One side of the second material 9 or in particular the region made of aluminum is connected mechanically stably, in a good electrically conductive manner, inseparably to the carrier 4, in particular the movable contact means 5, for example by electron beam welding. The welded connection 10, in particular an electron beam welded connection, is mechanically fixed, stable, permanent, i.e. inseparable, and has a low transition resistance or good electrical conductivity. The movable contact of the vacuum interrupter 2 is thereby mechanically fixedly, stably, permanently, i.e. inseparably and electrically conductively connected to the movable support 4, in particular to the movable contact device 5, and, under high currents, in particular in the range of several kiloamperes, large heating or rapid increases in temperature at the connection are avoided, which can lead to damage and/or failure of the high-voltage circuit breaker 1.

The vacuum interrupter 2, in particular the fixed and movable contacts of the vacuum interrupter 2 (which are made of and/or comprise copper, for example) and the respective intermediate piece 7 (which comprise copper areas, for example) are connected inseparably, in particular by electron beam welding, in particular by areas of the same material. The holders 2 and 3 made of aluminum and/or comprising aluminum are each connected inseparably, in particular inseparably by electron beam welding, with the respective intermediate piece 7 comprising aluminum regions, in particular with regions of the same material. The

regions

8 and 9 of the respective intermediate piece 7 are connected to one another inseparably, in particular by spraying and/or barrel plating, in particular by joining together regions of different materials. Thus, there are vacuum interrupter 2, in particular fixed and movable contacts of vacuum interrupter 2, which have good electrical properties, i.e. high electrical conductivity, and low electrical resistance, through the inseparable connection of the respective intermediate piece 7 to the respective carrier 3 and 4. A good electrical connection through the high-voltage circuit breaker 1 is thereby achieved in the closed state, wherein the risk of intense heat generation, in particular at the connection points, and the risk of damage and/or destruction due to excessive heat generation are minimized. The large mechanical forces during switching or generated by the switching movement are compensated by the inseparable, mechanically fixed, stable mechanical connection of the holders 3 and 4 to the vacuum interrupter 2 and do not lead to damage to the high-voltage circuit breaker 1.

The embodiments described above may be combined with each other and/or with the prior art. The high-voltage circuit breaker 1 can therefore have, for example, a housing, which is not shown in the figures for simplicity, and which is filled with a switching gas, in particular SF ₆ And/or clean air. The housing is, for example, a hollow insulator, in particular, hermetically sealed, which has ribs, in particular on the outer circumference, in order to reduce creepage currents, the hollow insulator being made of ceramic, silicone and/or composite material. Alternatively, the housing is, for example, a hermetically sealed metal can, which is electrically grounded. The support leads out of the housing, for example, from the housing, for electrically connecting the high-voltage circuit breaker 1 to the electrical network, in particular to the generator and/or to the consumer and/or to the power line. Furthermore, the high-voltage circuit breaker 1 has, for example, a carrier for arranging the high-voltage circuit breaker 1 on, for example, a base. Furthermore, the high-voltage circuit breaker has, for example, a drive, in particular a spring-loaded drive, and elements of the kinematic chain, for example, a transmission, and at least one drive rod for driving the movable contact during switching.

The high voltage circuit breaker 1 is equipped with movable contacts and fixed contacts, alternatively or additionally other contacts may be included, and/or at least two movable contacts may be included. The contacts are made of copper. Additionally or alternatively, other materials may be included, such as steel and/or aluminum, and the intermediate piece 7 comprises a first material on the side 8, which is, for example, also steel and/or aluminum. The bracket is made of aluminum. Additionally or alternatively, other materials may be included, such as steel and/or copper, and the intermediate piece 7 comprises a second material on the side 9, the others being, for example, also steel and/or copper. The two different materials of the vacuum interrupter 2 and of the holders 3 and 4 are joined inseparably, in particular by means of an intermediate piece 7 consisting of two circular disks. Alternatively or additionally, other shapes may be selected, such as a cylinder with a square cross-section and/or a hollow body. The two materials of the intermediate piece 7 can be joined and/or in particular continuously transition into one another in a well-defined separation region, for example by material diffusion of the materials into the other material, for example after a heat treatment.

Reference numerals:

1. high-voltage circuit breaker

2. Vacuum switch tube

3. Support for fixing contact side

4. Support for movable contact piece side

5. Movable contact device, in particular contact plate

6. Support sleeve

7. Middleware

8. One side of the first material

9. One side of the second material

10. Welded connection

Claims

1. A high-voltage circuit breaker (1) having at least one vacuum interrupter (2) which is supported by at least one support (3, 4) of the high-voltage circuit breaker (1),

it is characterized in that the method comprises the steps of,

the at least one vacuum interrupter (2) is connected inseparably to the at least one support (3, 4).

2. The high voltage circuit breaker (1) according to claim 1, characterized in that the at least one vacuum interrupter (2) comprises at least one fixed contact and at least one movable contact, with at least one bracket (3) on one side of the at least one fixed contact and at least one bracket (4) on one side of the at least one movable contact.

3. High-voltage circuit breaker (1) according to any of the preceding claims, characterized in that the at least one vacuum interrupter (2) is inseparably connected to the at least one support (3, 4) by a welded connection (10), in particular by an electron beam welded connection (10).

4. High-voltage circuit breaker (1) according to any of the preceding claims, characterized in that the at least one vacuum interrupter (2) is connected inseparably to at least one bracket (3, 4) via an intermediate piece (7), respectively.

5. High-voltage circuit breaker (1) according to claim 4, characterized in that the intermediate piece (7) comprises at least two, in particular exactly two, regions, in particular made of copper and regions made of aluminum, wherein the two regions are in particular connected to one another in a material-fitting, inseparable manner, in particular by spraying and/or barrel plating.

6. High-voltage circuit breaker (1) according to one of the preceding claims, characterized in that the at least one vacuum interrupter (2), in particular the at least one fixed contact and the at least one movable contact of the at least one vacuum interrupter (2), are each connected to the intermediate piece (7), in particular by electron beam welding, and/or the intermediate piece (7) comprises two regions of different materials, wherein the two regions are cooperatively, inseparably connected to each other by a plating and/or barrel plating material, and/or the intermediate piece (7) is each inseparably connected to the at least one support (3, 4), in particular by electron beam welding.

7. High-voltage circuit breaker (1) according to any one of the preceding claims, characterized in that the at least one vacuum interrupter (2), in particular the at least one stationary contact and the at least one movable contact of the at least one vacuum interrupter (2), are made of and/or comprise copper, and/or the intermediate piece (7) comprises a copper region, which is inseparably connected with the copper of the vacuum interrupter (2), in particular by electron beam welding, and/or the support (3, 4) is correspondingly made of and/or comprises aluminum, and/or the intermediate piece (7) comprises an aluminum region, which is inseparably connected with the aluminum of the support (3, 4), in particular by electron beam welding.

8. The high voltage circuit breaker (1) according to any of the preceding claims, characterized in that the high voltage circuit breaker (1) is designed for switching voltages in the range of several kilovolts to 1200 kilovolts.

9. High voltage circuit breaker (1) according to any of the preceding claims, characterized in that the high voltage circuit breaker (1) comprises a switching gas, in particular SF ₆ And/or clean air, and the vacuum interrupter (2) and/or the at least one support (3, 4) are spatially surrounded by the switching gas.

10. High-voltage circuit breaker (1) according to one of the preceding claims, characterized in that at least one support (3, 4) is designed for mechanically stable arrangement of the vacuum interrupter (2) in a housing, in particular a closed insulator housing, in particular with a spatially fixed support (3) and/or with a support (4) which is driven in a movable manner, in particular by a drive.

11. Method for manufacturing a high-voltage circuit breaker (1), in particular a high-voltage circuit breaker (1) according to any of the preceding claims, having at least one vacuum interrupter (2) which is supported by at least one support (3, 4),

it is characterized in that the method comprises the steps of,

the at least one vacuum interrupter (2) is connected to the at least one support (3, 4) in an inseparable manner, in particular by electron beam welding.

12. Method according to claim 11, characterized in that the at least one vacuum interrupter (2), in particular at least one stationary contact and at least one movable contact of the at least one vacuum interrupter (2), are each connected to an intermediate piece (7), in particular by electron beam welding, the at least one stationary contact and the at least one movable contact in particular comprising copper, and/or the intermediate piece (7) comprises two regions of different materials, in particular copper and aluminum, wherein the two regions are connected to each other inseparably by means of a plating and/or barrel plating material fit, inseparably, and/or the intermediate piece (7) is each connected to at least one carrier (3, 4), in particular comprising aluminum, in particular by means of electron beam welding.

13. Method according to claim 12, characterized in that the copper areas of the intermediate piece (7) are each connected with the copper of the contact piece of the vacuum interrupter (2), and the aluminum areas of the intermediate piece (7) are each connected with the aluminum of the bracket (3, 4).