ES1299474U - A circuit breaker-disconnector-earthing switch assembly (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

An assembly (1) circuit breaker-disconnector-earthing switch comprising a housing (2) made of dielectric material, in which a subassembly (3) of disconnector-earthing switch and a subassembly (4) are arranged) of vacuum circuit breakers connected in series with each other, characterized in that the assembly (1) comprises a subassembly (5) of rotating electrical joint that forms an electrical connection in series between the subassembly (3) of earthing disconnector-switch and the disconnector subassembly (4); and the subassembly (3) of the earthing switch-disconnector comprises - a chamber (31) in which a rotating pin (32) of dielectric material is arranged, wherein the axis (O32) of rotation of the rotating pin (32) coincides with the axis (O5) of rotation of the subassembly (5) of rotating electrical joint. - a rotatable conductive connection element (33) arranged in the chamber (31) and in the rotatable plug (32) and at one end electrically connected via the first axial contact (331) to the rotatable electrical joint subassembly (5) and in the other end provided with the second rotating radial contact (332) protruding from the rotating pin (32) in the non-parallel direction with respect to the axis (O32) of rotation of the rotating pin (32). - at least two insulating partitions (321) made of dielectric material and protruding from the rotary plug (32) and surrounding the second radial rotary contact (332) in the plane (P1-P1) perpendicular to the axis (O32) of rotation of the rotary plug (32), wherein the insulating baffles (321) define with respect to each other on the side of the second radial rotary contact (332) a protruding angle (α), which preferably does not exceed 110°; - a toothed wheel (322), preferably a worm, connected to the rotating pin (32) and rotatable about the axis (O32) of rotation of the rotating pin (32). - a reception output contact (61) and a grounding contact (62) (62) that protrude inward from the internal surface of the chamber (31) in the plane of rotation of the second rotating radial contact (332) of the rotatable conductor connection element (33) and which can be connected to the second rotatable radial contact (332) at specific angular positions of this rotatable contact (332). - An electrical terminal (63) for receiving output and an electrical grounding terminal (64) connected respectively to the contact (61) for receiving output and to the contact (62) for grounding. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

A circuit breaker-disconnector-earthing switch assembly

This utility model refers to a grounding switch-disconnector-switch assembly that comprises a housing made of dielectric material, in which a grounding switch-disconnector subassembly and a vacuum circuit breaker subassembly are arranged. connected in series with each other.

The integration of an automatic vacuum circuit breaker and an earthing switch-disconnector assembly in one form of the above described circuit breaker-disconnector-earthing switch assembly is known in the prior art.

For example, publication WO0133593A1 describes such a circuit breaker-disconnector-earthing switch assembly comprising a disconnector that is placed in an SF6 gas protected environment and functions as a line/earth switch, and a vacuum circuit breaker that is connected in series with the disconnector and that can be used both as a line circuit breaker to protect the line, and as a grounding switch with closing capacity.

Object of the invention

The object of the present invention is to provide an innovative alternative earthing switch-disconnector assembly having a relatively simple but reliable construction.

Compendium of the utility model

According to the present utility model, an earthing switch-disconnector assembly of the type mentioned at the outset is provided, comprising a housing made of dielectric material, in which a grounding switch-disconnector subassembly and a subset of vacuum circuit breakers connected in series with each other, and characterized in that

The circuit breaker-disconnector-earthing switch assembly comprises a rotary electrical joint subassembly that forms a series electrical connection between the earthing disconnector-switch subassembly and the vacuum circuit breaker subassembly; and

the subassembly of the earthing switch-disconnector comprises

- a chamber in which a rotary pin of dielectric material is arranged, wherein the axis of rotation of the rotary pin coincides with the axis of rotation of the rotary electrical joint subassembly

- a rotatable conductive connection element arranged in the chamber and in the rotatable plug and, at one end, electrically connected via the first axial contact to the rotatable electrical joint subassembly and, at the other end, provided with a second rotatable radial contact that protrudes from the rotating pin in the direction not parallel to the axis of rotation of the rotating pin

- at least two insulating partitions made of dielectric material and protruding from the rotating plug and surrounding and separating the second radial rotary contact in the plane perpendicular to the axis of rotation of the rotating plug, wherein the insulating partitions define each other in the side of the second radial rotary contact a projecting angle, which is preferably not more than 110°;

- a toothed wheel, preferably a worm, connected to the rotating pin and rotatable about the axis of rotation of the rotating pin

- a receiving output contact and a grounding contact which protrude inwardly from the inner surface of the chamber in the plane of rotation of the second rotating radial contact of the rotating conductor connecting element and which can be connected to the second radial contact rotary at specific angular positions of this rotary contact

- an electrical output receiving terminal and an electrical grounding terminal connected respectively to the output receiving contact and to the grounding contact.

The dielectric rotatable plug may preferably comprise a radial protrusion protruding from its lateral surface, from which the second radial rotatable contact protrudes.

In some preferred embodiments of the present utility model, the receive output contact and/or the ground contact may each comprise two component contacts, wherein the second radial rotary contact is inserted between the component contacts on the direction of the axis of rotation of the rotating pin.

The rotary electrical joint subassembly of the circuit breaker-disconnector-earthing switch assembly may preferably comprise an intermediate conductive element electrically connected to a stationary contact of the vacuum circuit breaker subassembly and comprising an opening located concentrically with respect to the axis of rotation of the rotatable pin and provided with a radial annular recess, wherein a conductive coil spring is arranged in the radial annular recess and makes contact with a surface of the radial annular recess and makes contact with the first axial contact of the rotatable conductive connecting element located in the opening of the conductive intermediate element.

According to the present utility model, it is preferable that the rotatable plug comprises an insulating collar made of dielectric material and circumferentially surrounds the rotatable electrical joint subassembly.

The axis of rotation of the rotary plug of the circuit breaker-disconnector-earthing switch assembly preferably coincides with the longitudinal axis of the contacts of the vacuum circuit breaker subassembly.

The toothed wheel preferably forms a monolithic element together with the rotating plug and is arranged in the chamber of the earthing switch-disconnector subassembly.

The housing of the circuit breaker-disconnector-earthing switch assembly can preferably be provided with a channel in which a driving worm is arranged and coupled with the toothed wheel, preferably the worm, of the rotating plug.

The chamber of the earthing switch-switch subassembly is preferably provided with an outlet on the opposite side relative to the circuit breaker subassembly, where the outlet is preferably closed with a cover, preferably with a rotatable cover.

The housing of the circuit breaker-disconnector-earthing switch assembly can preferably comprise a monolithic body made of an electrical insulating resin, preferably of an epoxy resin, and even more preferably of a two-component epoxy resin such as, for example, the commercially available Huntsman CW229-3/HW229-1 two component epoxy resin.

The circuit breaker-disconnector-grounding switch assembly according to the utility model has a simple and reliable construction, its use and maintenance are easy, and it does not require the use of SF6 insulation. The assemblies of the present utility model can be easily arranged in a larger number (for example, in a number of three assemblies) on a common mounting base, thus forming integrated multiple circuit breaker-disconnector-earthing-switch units. phases (for example, triphasic). The toothed wheels of all the earthing circuit breaker-disconnector-switch assemblies of the present utility model that form said integrated unit can be driven by means of a single common drive worm.

Brief description of the drawings

The utility model will be described and explained below in connection with the embodiments presented in the attached drawings in which:

Fig. 1 shows an axonometric view of the first embodiment of the circuit breaker-grounding switch assembly of the present utility model,

Fig. 2 shows an axonometric cross-sectional view of the first embodiment from Fig. 1 in a connection position of a connecting conductor element with a grounding contact,

Fig. 3 shows a longitudinal cross section of the first embodiment of Fig. 1 in a connection position of a conductive connection element with a grounding contact,

Fig. 4 shows a cross section of the first embodiment of Fig. 1 made in the plane P1-P1 shown in Fig. 3 in a connection position of a conductive connection element with a grounding contact,

Fig. 5 shows a cross section of the first embodiment of Fig. 1 made in the plane P2-P2 shown in Fig. 3 in a connection position of a conductive connection element with a grounding contact,

Fig. 6 shows a cross section of the first embodiment of Fig. 1 made in the plane P2-P2 depicted in Fig. 3 in a neutral position with complete disconnection of a conductive connecting element,

Fig. 7 shows a cross section of the first embodiment of Fig. 1 realized in the plane P2-P2 represented in Fig. 3 in a connection position of a conductive connection element with a receiving output contact,

Fig. 8 shows a longitudinal cross section of the second embodiment of the circuit breaker-disconnector-grounding switch assembly of the present utility model in a connection position of a conductive connection element with a grounding contact,

The fig. 9 shows a cross section of the second embodiment of fig. 8 made in the plane P1-P1 represented in FIG. 8 in a position of a connection of a conductive connection element with a grounding contact,

Fig. 10 shows a longitudinal cross section of the third embodiment of the circuit breaker-disconnector-grounding switch assembly of the present utility model in a connection position of a conductive connection element with a grounding contact.

Detailed Description of the Preferred Embodiments

The first embodiment of the circuit breaker-disconnector-grounding switch assembly of the present utility model, as shown in Figs. 1-7, comprises a housing 2 made of dielectric material in the form of a monolithic body made of an electrical insulating resin (for example, an epoxy resin, such as the commercially available two-component epoxy resin Huntsman CW229-3/HW229 -1), in which an earthing disconnector-switch subassembly 3 and a disconnector subassembly 4 connected in series with each other are arranged. The vacuum circuit breaker subassembly 4 is fully integrated in a resin material of the housing body 21 2, in which the connection ends of its stationary contact 41 and its movable contact 42 protrude outside the housing body 21 2. The subassembly 4 of circuit breaker with its stationary contact 41 and by means of a subassembly 5 of rotary electrical joint, it is electrically connected in series with the subassembly 3 of earthing disconnector-switch. The movable contact 42 is movable relative to the stationary contact 41 along the longitudinal axis O4 of the vacuum breaker subassembly 4. The earthing switch-disconnector subassembly 3 comprises a chamber 31, in which a rotatable conductor connection element 33 is arranged and connects in its specific angular positions the stationary contact 41 of the earthing switch-disconnector subassembly 4 to a receive output contact 61 connected to an electrical receive output terminal 63 or, alternatively, to a ground contact 62 connected to an electrical ground terminal 64. The rotatable conductor connection element 33 is integrated in a rotatable plug 32 made of dielectric material, wherein a first axial contact 331 of the rotatable conductor connection element 33 protrudes from the rotatable plug 32 along its longitudinal axis O32, and a second radial rotatable contact 332 of the rotatable conductor connection element 33 protrudes from a radial protrusion 323 of the rotatable plug 32 in the direction not parallel to the axis O32 of rotation of the rotatable plug 32. The first axial contact 331 and the second contact rotatable radial 332 constitute the opposite end portions of rotatable conductor connecting element 33 . The first axial contact 331 of the rotary conductive connection element 33 is electrically conductively connected to the rotary electrical joint subassembly 5 . Whereas the second radial rotary contact 332 moves in a circle as a result of a rotation of the rotary plug 32 with the rotary conductive connection element 33 about the axis of rotation O32. During this circling movement, the second radial rotary contact 332 can move to the position of an electrical contact with the receive output contact 61 and to another position of an electrical contact with the grounding contact 62, in which the contacts 61 and 62 project opposite each other into the inner surface of the chamber 31 in the plane P1-P1 of rotation of the second radial rotary contact 332 of the rotary conductor connecting element 33. The receiving output contact 61 and the ground contact 62 each comprise two component contacts 611,621, wherein the second radial rotary contact 332 of the rotatable conductor connection element 33 is inserted between the component contacts 611,621 in the direction of the axis O32 of rotation of the rotary plug 32. In this first embodiment of the circuit breaker-earthing switch assembly 1, the axis O32 of rotation of the rotating plug 32 with the rotating conductor connection element 33 coincides with the longitudinal axis O4 of the contacts 41,42 of the subassembly 4 of the vacuum breaker. The rotary electrical joint subassembly 5 comprises a conductive intermediate element 51 on the one hand electrically connected to the stationary contact of the vacuum circuit breaker subassembly 4 and on the other hand electrically connected to the first axial contact 331 of the rotating conductive connection element 33 . The electrical connection of the conductive intermediate element 51 with the stationary contact 41 of the vacuum circuit breaker subassembly 4 is made by contacting these elements directly with each other by means of a screw connection. While the electrical connection of the conductive intermediate element 51 with the first axial contact 331 of the rotatable conductive connection element 33 is made by means of a helical spring conductor 53 arranged in a radial annular recess 521 formed in an opening 52 formed in the conductive intermediate element 51. The opening 522 with the radial annular recess 521 is concentric with respect to the axis O32 of rotation of the rotating pin 32 and the first axial contact 331 of the rotatable conductive connection element 33 is inserted into this opening 522 in such a way that a coil spring 53 arranged in the radial annular recess 521 is in electrically conductive contact on its inner side with this first axial contact 331 of the conductive connection element 33 rotatable and is in electrically conductive contact on its eternal side with the surface of the radial annular recess 521. As a result, the axis O32 of rotation of the rotatable plug 32 and of the rotatable conductive connecting element 33 coincides with the axis of rotation O5 of the rotary electrical joint subassembly 5. Two longitudinal insulating partitions 321 made of dielectric material protrude radially from the rotary plug 32 and extend along the axis of the rotary plug 32 and surround and separate the second radial rotary contact 332 in the plane P1-P1 which is perpendicular to with respect to the axis O32 of rotation of the rotary pin 32. These two insulating partitions 321 define with respect to each other on the side of the second radial rotary contact 332 a projecting angle a, which preferably does not exceed 110°. In addition, the earthing switch-switch subassembly 3 comprises a wheel 322 for an endless screw connected to the rotating plug 32 above the longitudinal insulating partitions 312 and concentrically with respect to the axis O32 of rotation of the rotating plug 32. The worm wheel 322 serves to control the angular position of the rotary plug 32 and thus the switching state of the second rotary radial contact 332 of the rotary conductor connection element 33 with respect to the receiving output contact 61 and the ground contact 62. The teeth of the worm wheel 322 are accessible from the exterior of the chamber 31 through the outlet of the chamber 31 on the opposite side relative to the vacuum breaker subassembly 4 to allow the worm wheel 322 to end meshes with a suitable drive control element not shown in Figs. 1-7. The rotary pin 32 comprises an insulating collar 324 of dielectric material located opposite the worm wheel 322 and circumferentially surrounding the rotary electrical joint subassembly 5 . In this first embodiment, the rotating pin 32, its radial protrusion 323, the longitudinal insulating partitions 321, the worm wheel 322 and the insulating collar 324 form a single monolithic dielectric element made of an electrical insulating resin, for example of a epoxy resin, such as for example the commercially available Huntsman CW229-3/HW229-1 two-component epoxy resin.

The second embodiment of the circuit breaker-disconnector-earthing switch assembly 1, as shown in Figs. 8-9, comprises the rotating pin 32 provided with four insulating partitions 321, 3211, including two additional insulating partitions 3211 - which are additional compared to the first embodiment of Figs. 1-7 - which are arranged symmetrically to the insulating partitions 321 surrounding the second radial rotary contact 332 of the rotary conductive connection element 33 relative to the plane passing through the axis O32 of rotation of the rotary plug 32 and which is perpendicular to relative to the protruding direction of the second radial rotary contact 332. In this second embodiment, the second radial rotary contact 332 of the rotary conductive connection element 33 protrudes directly from the rotary pin 32, which is not provided with any radial projection, from which in the first embodiment the second radial rotary contact protrudes.

Fig. 10 shows the third embodiment of the circuit breaker-disconnector-earthing switch assembly 1. In this third embodiment, the axis O32 of rotation of the rotary plug 32 with the rotary conductive connection element 33 coincides with the axis O5 of rotation of the rotary electrical joint subassembly 5, but does not coincide with the longitudinal axis O4 of the contacts 41 42 of the vacuum breaker subassembly 4 and is perpendicular to this longitudinal axis O4. The output of camera 31 of the subset of The earthing switch-switch located on the opposite side of the vacuum circuit breaker subassembly 4 is, in this third embodiment, closed with a rotatable cover 24. The cover 24 forms the housing 2 together with the body 3 and defines the channel 22 in the housing, where the drive worm 23 is arranged in the channel 22 and cooperates with the wheel 322 for the endless screw of the rotating pin. 32 arranged in the chamber 31. Furthermore, a cylindrical cavity 241 is formed on the inner side of the cover 24, in which the end of the rotary pin 32 is engaged in this cavity. Furthermore, additionally in relation to the first and second embodiments, the body 21 of the housing 2 in the third embodiment comprises a mounting protrusion 25 protruding downwards from the bottom of the body 21 and is provided with a threaded mounting opening 251 which allows the 1 circuit breaker-disconnector-earthing switch assembly to be mounted on a base that is not shown in the drawings.

The above-presented embodiments of the present utility model and the attached drawings are merely exemplary and should not be construed as limiting the scope of utility model protection defined in the claims. It is obvious to a skilled technician to create a number of other variants of the present utility model, including new variants that constitute combinations of the described embodiments of the present utility model. Figures are not necessarily to scale and some features may be exaggerated or minimized to better illustrate this utility model. However, these and other factors should not be considered as a limitation of the spirit of the utility model, whose scope of protection is indicated in the attached claims.

numerical references

1 circuit breaker-disconnector-earthing switch assembly 2 housing

21 body

22 channel

23 drive worm

24 cap

241 cavity

25 boss mount

251 mounting opening

3 earthing switch-disconnector subassembly

31 camera

32 swivel pin

321 insulating partition

3211 additional insulating partition

322 worm wheel

323 radial boss

324 insulating collar

33 connecting element rotating conductor

331 first axial contact

332 second rotating radial contact

4 Vacuum Circuit Breaker Subassembly

41 stationary contact

42 moving contact

5 rotary electrical joint subassembly

51 conductive intermediate element

52 opening

521 radial annular recess

53 coil spring

61 receiver output contact

611 component contact

62 ground contact

621 component contact

63 receiving output electrical terminal

64 electrical grounding terminal

O32 axis of rotation of the rotary pin (32)

O5 axis of rotation of the subassembly (5) of the rotary electrical joint

O4 longitudinal axis of the contacts (41, 42) of the subassembly (4) of the vacuum circuit breaker P plane perpendicular to the axis of rotation of the rotating plug (32) at an outgoing angle between the insulating partitions (321) on the side of the second radial rotary contact (332)

Claims (10)

1. An assembly (1) circuit breaker-disconnector-earthing switch comprising a housing (2) of dielectric material, in which a subassembly (3) of disconnector-earthing switch and a subassembly (4) are arranged ) of vacuum circuit breakers connected in series with each other, characterized by The assembly (1) comprises a rotary electrical joint subassembly (5) that forms an electrical connection in series between the earthing switch-disconnector subassembly (3) and the disconnector subassembly (4); and the subassembly (3) of the earthing switch-disconnector comprises - a chamber (31) in which a rotating pin (32) of dielectric material is arranged, wherein the axis (O32) of rotation of the rotating pin (32) coincides with the axis (O5) of rotation of the subassembly (5 ) rotary electrical joint - a rotatable conductive connection element (33) arranged in the chamber (31) and in the rotatable plug (32) and at one end electrically connected via the first axial contact (331) to the rotatable electrical joint subassembly (5) and in the other end provided with the second rotating radial contact (332) protruding from the rotating pin (32) in the non-parallel direction with respect to the axis (O32) of rotation of the rotating pin (32) - at least two insulating partitions (321) made of dielectric material and protruding from the rotary plug (32) and surrounding the second radial rotary contact (332) in the plane (P1-P1) perpendicular to the axis (O32) of rotation of the rotary plug (32), wherein the insulating baffles (321) define with respect to each other on the side of the second radial rotary contact (332) a protruding angle (a), which preferably does not exceed 110°; - a toothed wheel (322), preferably a worm, connected to the rotating pin (32) and rotatable about the axis (O32) of rotation of the rotating pin (32) - a reception output contact (61) and a grounding contact (62) (62) that protrude inward from the internal surface of the chamber (31) in the plane of rotation of the second rotating radial contact (332 ) of the rotatable conductor connection element (33) and which can be connected to the second rotatable radial contact (332) at specific angular positions of this rotatable contact (332) - An electrical terminal (63) for receiving output and an electrical grounding terminal (64) connected respectively to the contact (61) for receiving output and to the contact (62) for grounding. 2. The circuit breaker-disconnector-earthing switch assembly (1) according to claim 1, characterized in that the dielectric rotary plug (32) comprises a radial protuberance (323) from which the second radial rotary contact (332) protrudes. . 3. The circuit breaker-disconnector-grounding switch assembly (1) according to claim 1 or 2, characterized in that the receiving output contact (61) and/or the grounding contact (62) each comprise two component contacts (611,621), in which the second radial rotary contact (332) is inserted between the component contacts (611,621) in the direction of the axis (O32) of rotation of the rotary pin (32). 4. The circuit breaker-disconnector-earthing switch assembly (1) according to claim 1 or 2 or 3, characterized in that the rotary electrical joint subassembly (5) comprises an intermediate conductive element (51) electrically connected to a contact stationary (41) of the vacuum circuit breaker subassembly (4) and comprising an opening (52) located concentrically with respect to the axis (O32) of rotation of the rotating pin (32) and provided with a radial annular recess (521), wherein a conductive coil spring (53) is arranged in the radial annular recess (521) and contacts a surface of the radial annular recess (521) and contacts the first axial contact (331) of the rotatable conductive connection element (33). located in the opening (52) of the conductive intermediate element (51). 5. The earthing circuit breaker-disconnector-switch assembly (1) according to any one of the previous claims 1 to 4, characterized in that the rotating plug (32) comprises an insulating collar (324) made of dielectric material and circumferentially surrounding the subassembly (5) of rotating electrical joint. 6. The circuit breaker-disconnector-earthing switch assembly (1) according to any one of the previous claims 1-5, characterized in that the axis (O32) of rotation of the rotating plug (32) coincides with the longitudinal axis ( O4) of the contacts (41, 42) of the subassembly (4) vacuum circuit breaker. 7. The earthing circuit breaker-disconnector-switch assembly (1) according to any of the previous claims 1-6, characterized in that the toothed wheel (322) forms a monolithic element together with the rotating plug (32) and is arranged in the chamber (31) of the grounding disconnector-switch subassembly (3). 8. The earthing circuit breaker-disconnector-switch assembly (1) according to any of the preceding claims 1-7, characterized in that the housing (2) is provided with a channel (22) in which a screw is arranged. worm (23) driving and coupled with the toothed wheel (322), preferably the worm, of the rotating pin (32). 9. The circuit breaker-disconnector-earthing switch assembly (1) according to any one of the preceding claims 1-8, characterized in that the chamber (31) of the earthing disconnector-switch subassembly is provided with a hole for outlet on the opposite side with respect to the circuit breaker subassembly (4), wherein the outlet opening is preferably closed with a cover (24) preferably with a rotatable cover. 10. The earthing circuit breaker-disconnector-switch assembly (1) according to any one of the preceding claims 1-9, characterized in that the housing (2) comprises a monolithic body (21) made of an electrically insulating resin, preferably from an epoxy resin, and even more preferably from a two-component epoxy resin.