CN212783213U

CN212783213U - Horizontal vacuum circuit breaker for gas-insulated switchgear

Info

Publication number: CN212783213U
Application number: CN202021750373.8U
Authority: CN
Inventors: 夏强
Original assignee: Chongqing Chongkai Electrical Co ltd
Current assignee: Chongqing Chongkai Electrical Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-03-23
Anticipated expiration: 2030-08-20

Abstract

The utility model provides a horizontal vacuum circuit breaker for an inflating cabinet, which comprises a driving mechanism, a sealing plate, a push rod, an insulating rod, a vacuum arc extinguish chamber and a base; the driving mechanism is arranged at the outer side of the inflatable cabinet, and a sealing plate is arranged between the driving mechanism and the inflatable cabinet; one end of the push rod is in transmission connection with the driving mechanism, the other end of the push rod penetrates through the sealing plate and then extends into the inflatable cabinet, and the driving mechanism is used for driving the push rod to do telescopic motion; one end of the push rod, which is far away from the driving mechanism, is connected with the vacuum arc-extinguishing chamber through an insulating rod; the vacuum arc extinguish chamber is connected with the bottom plate of the gas charging cabinet in a sliding way through the base, and an insulating seat is also arranged between the vacuum arc extinguish chamber and the base; the vacuum arc extinguish chamber is provided with a moving contact at one end far away from the insulating rod, a fixed contact is arranged in the gas charging cabinet, and the driving mechanism drives the push rod to enable the moving contact to be in contact with or separated from the fixed contact so as to complete the switching-on or switching-off operation of the circuit breaker. This application, through arranging the horizontal level of circuit breaker, simple structure, simple to operate has satisfied the transformer substation operation demand.

Description

Horizontal vacuum circuit breaker for gas-insulated switchgear

Technical Field

The utility model relates to a cubical switchboard technical field, concretely relates to aerify horizontal vacuum circuit breaker for cabinet.

Background

The traditional 10kV sulfur hexafluoride inflatable switch cabinet circuit breaker adopts side-mounted longitudinal arrangement, is influenced by the structural size of the circuit breaker, the structural size of a disconnecting switch and accessories, and can only achieve 900A/25kA of maximum current parameters of the circuit breaker. The operation current parameter of a switch cabinet required by the operation of the existing transformer substation system needs to reach 2500A/31.5kA, and the traditional side-mounted longitudinally-arranged circuit breaker can not meet the operation requirement of the transformer substation.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a pair of aerify horizontal vacuum circuit breaker for cabinet has solved the technical problem that traditional side dress longitudinal arrangement's circuit breaker can not satisfy the transformer substation operation demand.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a horizontal vacuum circuit breaker for an inflatable cabinet comprises a driving mechanism, a sealing plate, a push rod, an insulating rod, a vacuum arc extinguish chamber and a base; the driving mechanism is arranged on the outer side of the inflatable cabinet, and the sealing plate is arranged between the driving mechanism and the inflatable cabinet; one end of the push rod is in transmission connection with a driving mechanism, the other end of the push rod penetrates through the sealing plate and then extends into the inflatable cabinet, and the driving mechanism is used for driving the push rod to do telescopic motion; one end of the push rod, which is far away from the driving mechanism, is connected with the vacuum arc-extinguishing chamber through the insulating rod; the vacuum arc extinguish chamber is connected with the bottom plate of the gas charging cabinet in a sliding manner through the base, and an insulating seat is arranged between the vacuum arc extinguish chamber and the base; the vacuum arc extinguish chamber is provided with a moving contact at one end far away from the insulating rod, a fixed contact is arranged in the gas charging cabinet, and the driving mechanism drives the push rod to enable the moving contact to be in contact with or separated from the fixed contact so as to complete the switching-on or switching-off operation of the circuit breaker.

Optionally, a connecting sleeve is arranged at one end, close to the push rod, of the insulating rod, a first round hole is formed in one surface, close to the push rod, of the connecting sleeve, the first round hole is connected with the periphery of the push rod in a sliding mode, a second round hole is formed in one surface, close to the insulating rod, of the connecting sleeve, the second round hole is connected with the insulating rod in a threaded mode, the aperture of the first round hole is smaller than that of the second round hole, and the first round hole is communicated with the second round hole through a; the push rod is close to insulator spindle one end and is equipped with the fastening cap, the fastening cap includes screw rod portion and end cap portion, screw rod portion and push rod tip threaded connection, end cap portion sets up in the bell mouth, just end cap portion periphery is equipped with the outer conical surface.

Optionally, the tapered bore has a taper angle of 50-120 degrees.

Optionally, the outer conical surface is coated with a soft chromium layer.

Optionally, vacuum interrupter is close to insulator spindle one end and is equipped with the extension rod, the extension rod also passes through with the insulator spindle the adapter sleeve with the fastening cap is connected.

Optionally, the bottom of the base is provided with a roller, the top surface of the bottom plate is provided with a sliding groove, and the roller is connected with the sliding groove in a sliding manner.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model provides a horizontal vacuum circuit breaker for an inflating cabinet, which comprises a driving mechanism, a sealing plate, a push rod, an insulating rod, a vacuum arc extinguish chamber and a base; the driving mechanism is arranged on the outer side of the inflatable cabinet, and the sealing plate is arranged between the driving mechanism and the inflatable cabinet; one end of the push rod is in transmission connection with a driving mechanism, the other end of the push rod penetrates through the sealing plate and then extends into the inflatable cabinet, and the driving mechanism is used for driving the push rod to do telescopic motion; one end of the push rod, which is far away from the driving mechanism, is connected with the vacuum arc-extinguishing chamber through the insulating rod; the vacuum arc extinguish chamber is connected with the bottom plate of the gas charging cabinet in a sliding manner through the base, and an insulating seat is arranged between the vacuum arc extinguish chamber and the base; the vacuum arc extinguish chamber is provided with a moving contact at one end far away from the insulating rod, a fixed contact is arranged in the gas charging cabinet, and the driving mechanism drives the push rod to enable the moving contact to be in contact with or separated from the fixed contact so as to complete the switching-on or switching-off operation of the circuit breaker. This application, through arranging the horizontal level of circuit breaker, simple structure, simple to operate has satisfied the transformer substation operation demand.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of a horizontal vacuum circuit breaker for an air-filled cabinet;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic structural view of the connecting sleeve and the fastening cap;

reference numerals:

1-a driving mechanism, 2-a sealing plate, 3-an insulating rod, 4-a vacuum arc-extinguishing chamber, 5-a bottom plate and 6-a base;

11-push rod, 31-connecting sleeve, 32-fastening cap, 41-moving contact, 42-incoming line row, 43-extension rod, 51-chute, 61-insulating seat and 62-roller;

311-a first round hole, 312-a conical hole, 313-a second round hole, 321-a screw part, 322-a cap part and 323-an outer conical surface.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1, the present invention provides a horizontal vacuum circuit breaker for an air-filled cabinet, which includes a driving mechanism 1, a sealing plate 2, a push rod 11, an insulating rod 3, a vacuum arc-extinguishing chamber 4 and a base 6. The driving mechanism 1 is arranged outside the inflatable cabinet, and the driving mechanism 1 can adopt a VS1 universal mechanism. The sealing plate 2 is arranged between the driving mechanism 1 and the inflating cabinet, and the sealing plate 2 and the inflating cabinet are connected and sealed in a bolt and rubber sealing ring mode, so that the annual air leakage rate of the inflating cabinet is lower than 0.5%. One end of the push rod 11 is in transmission connection with the driving mechanism 1, the other end of the push rod 11 penetrates through the sealing plate 2 and then extends into the interior of the gas-filled cabinet, and the driving mechanism 1 is used for driving the push rod 11 to do telescopic motion. One end, far away from the driving mechanism 1, of the push rod 11 is connected with the vacuum arc-extinguishing chamber 4 through the insulating rod 3. Vacuum interrupter 4 passes through base 6 and aerifys 5 sliding connection of bottom plate of cabinet, still be equipped with insulating seat 61 between vacuum interrupter 4 and the base 6. The circuit breaker is characterized in that a wire inlet bar 42 is arranged at one end, close to the insulating rod 3, of the vacuum arc extinguish chamber 4, a moving contact 41 is arranged at one end, far away from the insulating rod 3, of the vacuum arc extinguish chamber 4, a fixed contact (not shown) is arranged in the gas-filled cabinet, and the driving mechanism 1 drives the push rod 11 to enable the moving contact 41 to be in contact with or separated from the fixed contact, so that the switching-on or switching-off operation. Specifically, the driving mechanism 1 drives the push rod 11 to extend rightward, and the insulating rod 3 and the insulating base 61 are used for transferring force to push the base 6 and the vacuum arc-extinguishing chamber 4 arranged on the base to move rightward, so that the moving contact 41 is contacted with the static contact, and the closing operation of the circuit breaker is completed; when the brake is required to be opened, the driving mechanism 1 drives the push rod 11 to contract leftwards, and the insulating rod 3 and the insulating base 61 are used for force transmission to pull the base 6 and the vacuum arc-extinguishing chamber 4 arranged on the base to move leftwards, so that the movable contact 41 is separated from the fixed contact.

As a further improvement to the above scheme, please refer to fig. 2-3, a connection sleeve 31 is disposed at one end of the insulation rod 3 close to the push rod 11, a first circular hole 311 is disposed at one side of the connection sleeve 31 close to the push rod 11, the first circular hole 311 is slidably connected with the periphery of the push rod 11, a second circular hole 313 is disposed at one side of the connection sleeve 31 close to the insulation rod 3, the second circular hole 313 is in threaded connection with the insulation rod 3, the aperture of the first circular hole 311 is smaller than that of the second circular hole 313, and the first circular hole 311 is communicated with the second circular hole 313 through a tapered hole 312; the end, close to the insulating rod 3, of the push rod 11 is provided with a fastening cap 32, the fastening cap 32 comprises a screw rod portion 321 and an end cap portion 322, the screw rod portion 321 is in threaded connection with the end portion of the push rod 11, the end cap portion 322 is arranged in the tapered hole 312, and the periphery of the end cap portion 322 is provided with an outer conical surface 323. When the circuit breaker is switched on, the push rod 11 extends rightward to enable the end cap part 322 of the fastening cap 32 to be abutted against the insulating rod 3, and further the base 6 and the upper vacuum arc-extinguishing chamber 4 are pushed to move rightward; when the circuit breaker is opened, the push rod 11 is retracted leftwards, so that the outer conical surface 323 of the fastening cap 32 is abutted to the inner conical surface of the conical hole 312, and the base 6 and the upper vacuum arc-extinguishing chamber 4 are pulled leftwards. When the connecting sleeve 31 is pulled, the design of the conical surface enables the load to be shared by the hole wall of the first round hole 311, the hole wall of the second round hole 313 and the hole wall of the tapered hole 312, the risk that the load is concentrated on the hole wall of the first round hole 311 to cause the hole wall of the first round hole 311 to be pulled apart is reduced, and the reliability of the connecting sleeve 31 is improved. Preferably, the conical angle of the conical hole 312 is 50-120 degrees, and the inner conical surface and/or the outer conical surface 323 is coated with a soft chrome layer. Due to manufacturing tolerances, the taper of the tapered bore 312 and the taper of the outer conical surface 323 of the outer circumference of the cap portion 322 are difficult to maintain consistent, and are easily deformed and tightly abutted by soft chrome plating so that the inner conical surface and the outer conical surface 323 are easily pressed and deformed when in contact. Obviously, the connection structure of the insulating rod 3 and the vacuum interrupter 4 can refer to the connection structure of the insulating rod 3 and the push rod 11, that is, the vacuum interrupter 4 is provided with an extension rod 43 near one end of the insulating rod 3, and the extension rod 43 and the insulating rod 3 are also connected through the connecting sleeve 31 and the fastening cap 32.

As a further improvement to the above scheme, the bottom of the base 6 is provided with a roller 62, the top surface of the bottom plate 5 is provided with a sliding groove 51, the roller 62 is slidably connected with the sliding groove 51, the friction resistance is reduced by the connection between the roller 62 and the sliding groove 51, and the accuracy of the stroke track of the movable contact 41 is ensured by the sliding groove 51.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides an aerify horizontal vacuum circuit breaker for cabinet which characterized in that: comprises a driving mechanism (1), a sealing plate (2), a push rod (11), an insulating rod (3), a vacuum arc-extinguishing chamber (4) and a base (6); the driving mechanism (1) is arranged on the outer side of the inflatable cabinet, and the sealing plate (2) is arranged between the driving mechanism (1) and the inflatable cabinet; one end of the push rod (11) is in transmission connection with the driving mechanism (1), the other end of the push rod (11) penetrates through the sealing plate (2) and then extends into the inflatable cabinet, and the driving mechanism (1) is used for driving the push rod (11) to do telescopic motion; one end, far away from the driving mechanism (1), of the push rod (11) is connected with the vacuum arc-extinguishing chamber (4) through the insulating rod (3); the vacuum arc-extinguishing chamber (4) is connected with a bottom plate (5) of the gas-filled cabinet in a sliding way through a base (6), and an insulating seat (61) is arranged between the vacuum arc-extinguishing chamber (4) and the base (6); one end, far away from the insulating rod (3), of the vacuum arc extinguish chamber (4) is provided with a moving contact (41), a fixed contact is arranged in the gas charging cabinet, and the driving mechanism (1) drives the push rod (11) to enable the moving contact (41) to be in contact with or separated from the fixed contact, so that the switching-on or switching-off operation of the circuit breaker is completed.

2. The horizontal vacuum circuit breaker for the gas-filled cabinet according to claim 1, characterized in that: one end, close to the push rod (11), of the insulating rod (3) is provided with a connecting sleeve (31), one surface, close to the push rod (11), of the connecting sleeve (31) is provided with a first round hole (311), the first round hole (311) is in sliding connection with the periphery of the push rod (11), one surface, close to the insulating rod (3), of the connecting sleeve (31) is provided with a second round hole (313), the second round hole (313) is in threaded connection with the insulating rod (3), the aperture of the first round hole (311) is smaller than that of the second round hole (313), and the first round hole (311) is communicated with the second round hole (313) through a conical hole (312); push rod (11) are close to insulator spindle (3) one end and are equipped with fastening cap (32), fastening cap (32) are including screw rod portion (321) and end cap portion (322), screw rod portion (321) and push rod (11) tip threaded connection, end cap portion (322) set up in bell mouth (312), just end cap portion (322) periphery is equipped with outer conical surface (323).

3. The horizontal vacuum circuit breaker for the gas-filled cabinet according to claim 2, characterized in that: the taper angle of the tapered hole (312) is 50-120 degrees.

4. The horizontal vacuum circuit breaker for the gas-filled cabinet according to claim 3, characterized in that: the outer conical surface (323) is coated with a soft chromium layer.

5. The horizontal vacuum circuit breaker for the gas-filled cabinet according to claim 4, characterized in that: vacuum interrupter (4) are close to insulator spindle (3) one end and are equipped with extension rod (43), extension rod (43) also pass through with insulator spindle (3) adapter sleeve (31) with fastening cap (32) are connected.

6. The horizontal vacuum circuit breaker for the gas-filled cabinet according to any one of claims 2 to 5, wherein: the base (6) bottom is equipped with gyro wheel (62), bottom plate (5) top surface is equipped with spout (51), gyro wheel (62) with spout (51) sliding connection.