CN212725072U

CN212725072U - Interlocking device of isolation circuit breaker cabinet on SF6 full-insulation ring main unit

Info

Publication number: CN212725072U
Application number: CN202021808615.4U
Authority: CN
Inventors: 张国徽; 陶文庸; 马开春; 赵飞; 牛晓冬; 陈欢; 王志
Original assignee: Jiangsu Daye Intelligent Electrical Co ltd
Current assignee: Jiangsu Daye Intelligent Electrical Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-03-16
Anticipated expiration: 2030-08-26

Abstract

The utility model provides an SF6 full insulation looped netowrk cabinet isolation circuit breaker interlocking device, including the looped netowrk cabinet body, isolator mechanism and circuit breaker mechanism are installed respectively from top to bottom in the looped netowrk cabinet body, install the continuous link plate of separating between isolator mechanism and the circuit breaker mechanism, the last secondary shaft cover of installing of isolator mechanism, the continuous link plate of separating can move from top to bottom along the secondary shaft cover, be connected with the second extension spring with the circuit breaker mechanism top in the middle of the continuous link plate of separating, the continuous link plate bottom of separating is provided with hanging door drive assembly, install through the isolation operation axle between continuous link plate of separating and the isolator mechanism, keep away from on the isolator mechanism and separate the one end installing support of continuous link plate, install the square pole that can reciprocate and the interlocking piece that can move from side to side on the support, install elastic component between square pole and interlocking piece and the support, install the ground baffle between isolator, the utility model discloses simple structure, it is multiple functional, transmission efficiency is high, simple to operate, strong adaptability.

Description

Interlocking device of isolation circuit breaker cabinet on SF6 full-insulation ring main unit

Technical Field

The utility model relates to a looped netowrk cabinet interlocking technical field especially relates to an SF6 full insulation looped netowrk is last to keep apart circuit breaker cabinet interlock.

Background

At present, most SF6 full-insulation ring main units in the market have relatively perfect interlocking, but still have a plurality of interlocking, especially the mechanical lower door interlocking is not perfect enough, and the long-term operation reliability needs to be improved.

Used inlet wire operating device of SF6 all insulation looped netowrk cabinet, the lower door interlock that matches is common to be stay cord formula mechanism, and the stay cord is the nylon materials, because the use place probably is in the area that high low temperature change is great, and long-time operation stay cord has ageing phenomenon, and both ends connect the crimping not really to loosen and take off, all can lead to lower door interlock inefficacy, consequently, we have provided an interlock of isolating circuit breaker cabinet on SF6 all insulation looped netowrk cabinet and have been used for solving above-mentioned problem.

Disclosure of Invention

The to-be-solved technical problem of the utility model is overcome the defect that prior art exists, the utility model provides a SF6 full insulation looped netowrk is isolation circuit breaker cabinet interlock on cabinet, the utility model discloses simple structure, it is multiple functional, transmission efficiency is high, the modularized design, simple to operate, strong adaptability.

In order to solve the technical problem, the utility model discloses a technical scheme is: an interlocking device of an isolation circuit breaker cabinet on an SF6 full-insulation ring main unit comprises a ring main unit body, an isolation mechanism and a circuit breaker mechanism, wherein the isolation mechanism and the circuit breaker mechanism are respectively installed inside the ring main unit body from top to bottom, a separating linkage plate is installed between the isolation mechanism and the circuit breaker mechanism, a second shaft sleeve is installed on the isolation mechanism, the separating linkage plate can move up and down along the second shaft sleeve, a second tension spring is connected between the middle of the separating linkage plate and the top of the circuit breaker mechanism, a hanging door transmission assembly is arranged at the bottom of the separating linkage plate, the separating linkage plate and the isolation mechanism are installed through an isolation operation shaft, a support is installed at one end of the isolation mechanism far away from the separating linkage plate, a square rod capable of moving up and down and a linkage piece capable of moving left and right are installed on the support, an elastic assembly is installed between the square rod and the linkage piece and the support, the isolation mechanism is characterized in that a grounding operation shaft is arranged on one side, close to the grounding baffle, in the isolation mechanism, a stirring plate is arranged at one end of the grounding operation shaft, a handle is arranged at the other end of the grounding operation shaft, the stirring plate is of a triangular structure, and a stirring column is arranged at each corner.

Further, the hanging door transmission assembly comprises a first cam and a second cam, the first cam and the second cam are installed on the isolation mechanism through a connecting shaft, a guide plate installed on the ring main body is arranged under the first cam, a second hanging door pull rod capable of moving up and down is installed on the guide plate, a third spring is sleeved on the second hanging door pull rod, a second hanging door buckle is installed on the second hanging door pull rod, and a split pin limiting the third spring is arranged on the second hanging door pull rod.

Furthermore, a grounding baffle is arranged between the isolation mechanism and the support, and a grounding shifting plate capable of moving left and right is arranged on one side, close to the isolating interlocking plate, of the isolation mechanism.

Furthermore, an electromagnet fixing plate is installed on one side, away from the support, of the grounding shifting plate, and an electromagnet is installed at the top of the electromagnet fixing plate.

Further, the hanging door connecting assembly comprises a pulling plate and a first hanging door pull rod, the pulling plate is fixed at the bottom of the square rod, the first hanging door pull rod is installed at the bottom of the pulling plate, and a first hanging door buckle is installed on the first hanging door pull rod.

Furthermore, the elastic component comprises a first spring and a second spring, the square rod is sleeved with the first spring, and the interlocking piece is sleeved with the second spring.

Furthermore, the connecting lock piece is close to one end of the grounding shifting plate and is provided with a shifting piece located under the shifting plate, a first tension spring connected with the isolating mechanism is arranged on the shifting piece, and a lock piece for limiting the second spring is fixed on the interlocking piece.

Furthermore, a first shaft sleeve is installed on the isolation mechanism, and the grounding baffle can move up and down along the first shaft sleeve.

Furthermore, a travel switch is installed on the inner wall of the support, an interlocking transverse plate is fixed to the top of the square rod, and the interlocking transverse plate is attached to a contact on the travel switch.

The utility model discloses a SF6 full insulation looped netowrk is isolated circuit breaker cabinet interlock on cabinet compares with prior art, the beneficial effects of the utility model include:

1. the utility model discloses a rigid connection guarantees the reliability of lower door interlocking action, does not receive the environmental impact, and long-term operation reliability is strong.

2. The utility model discloses a mechanical parts assembles simply, simple structure, and is multiple functional, and transmission efficiency is high, and complete logic structure prevents that the switch from electrified, the maloperation condition.

Drawings

The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:

fig. 1 schematically shows an internal structure diagram of an interlocking device of an isolation circuit breaker cabinet on an SF6 fully insulated ring main unit according to an embodiment of the present invention;

fig. 2 schematically shows a partial front view of an interlock device of an isolation circuit breaker cabinet on an SF6 fully insulated ring main unit in a grounding open state according to an embodiment of the present invention;

fig. 3 schematically shows a partial rear view of an interlock device of an isolation circuit breaker cabinet on an SF6 fully insulated ring main unit in a grounding open state according to an embodiment of the present invention;

fig. 4 schematically shows a partial rear view of an interlock device of an isolation circuit breaker cabinet on an SF6 fully insulated ring main unit in a grounding and closing state according to an embodiment of the present invention;

reference numbers in the figures: 1-isolation operating shaft, 2-grounding baffle, 3-interlocking transverse plate, 4-first spring, 5-bracket, 6-square rod, 7-pulling plate, 8-first shaft sleeve, 9-grounding operating shaft, 10-travel switch, 11-interlocking piece, 12-locking piece, 13-second spring, 14-pulling piece, 15-first tension spring, 16-pulling plate, 17-isolation mechanism, 18-first cam, 19-first door hanging pull rod, 20-first door hanging buckle, 21-second door hanging buckle, 22-second door hanging pull rod, 23-third spring, 24-opening pin, 25-guide plate, 26-second cam, 27-second shaft sleeve, 28-circuit breaker mechanism, 29-second tension spring, 30-isolating interlocking plate, 31-electromagnet fixing plate, 32-electromagnet, 33-grounding shifting plate and 34-ring main body 34.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

An embodiment according to the present invention is shown in conjunction with fig. 1-4. An interlocking device of an isolation circuit breaker cabinet on an SF6 full-insulation ring main unit comprises a ring main unit 34, an isolation mechanism 17 and a circuit breaker mechanism 28, wherein the isolation mechanism 17 and the circuit breaker mechanism 28 are respectively installed inside the ring main unit 34 from top to bottom, a separating and interlocking plate 30 is installed between the isolation mechanism 17 and the circuit breaker mechanism 28, a second shaft sleeve 27 is installed on the isolation mechanism 17, the separating and interlocking plate 30 can move up and down along the second shaft sleeve 27, a second tension spring 29 is connected between the middle of the separating and interlocking plate 30 and the top of the circuit breaker mechanism 28, a door hanging transmission assembly is arranged at the bottom of the separating and interlocking plate 30, the separating and interlocking plate 30 and the isolation mechanism 17 are installed through an isolation operation shaft 1, a support 5 is installed at one end of the isolation mechanism 17 far away from the separating and interlocking plate 30, a square rod 6 capable of moving up and down and an interlocking piece 12 capable of moving left and right are installed on the support 5, elastic assemblies are, the bottom of the square rod 6 is connected with a hanging door connecting component.

The hanging door transmission component comprises a first cam 18 and a second cam 26, the first cam 18 and the second cam 26 are installed on an isolation mechanism 17 through a connecting shaft, a guide plate 25 installed on a ring main body 34 is arranged right below the first cam 18, a second hanging door pull rod 22 capable of moving up and down is installed on the guide plate 25, a third spring 23 is sleeved on the second hanging door pull rod 22, a second hanging door buckle 21 is installed on the second hanging door pull rod 22, a split pin 24 for limiting the third spring 23 is arranged on the second hanging door pull rod 22, the first cam 18 and the second cam 26 are driven to rotate through the transmission component to provide downward force for the second hanging door pull rod 22, upward resilience force is generated through resilience of the third spring 23, a grounding baffle plate 2 is installed between the isolation mechanism 17 and a support 5, a grounding shifting plate 33 capable of moving left and right is installed on one side, close to a breaking and linking lock plate 30, of the isolation mechanism 17, the grounding operation shaft 9 is shielded by the grounding baffle 2, and the grounding operation shaft 9 is shielded by the grounding shifting plate 33, so that the external grounding switch is blocked.

An electromagnet fixing plate 31 is arranged on one side of a grounding shifting plate 33 far away from a support 5, an electromagnet 32 is arranged at the top of the electromagnet fixing plate 31 and is used for preventing an earthing switch from being operated in a charged state, a hanging door connecting assembly comprises a pulling plate 7 and a first hanging door pulling rod 19, the pulling plate 7 is fixed at the bottom of a square rod 6, the first hanging door pulling rod 19 is arranged at the bottom of the pulling plate 7, a first hanging door buckle 20 is arranged on the first hanging door pulling rod 19, the pulling plate 7 drives the first hanging door pulling rod 19 and the first hanging door buckle 20 to move up and down for interlocking, an elastic assembly comprises a first spring 4 and a second spring 13, the square rod 6 is sleeved with the first spring 4, the connecting plate 12 is sleeved with the second spring 13, the square rod 6 and the connecting plate 12 return to the original position when not subjected to external force through the first spring 4 and the second spring 13, a shifting plate 14 positioned right below the shifting plate 16 is arranged at one end, the shifting piece 14 is provided with a first tension spring 15 connected with the isolation mechanism 17, the locking piece 12 for limiting the second spring 13 is fixed on the locking piece 12, the locking piece 12 is connected through the shifting piece 14, and the shifting piece 14 is reset when not receiving external force through the first tension spring 15.

The inside ground connection operating axis 9 that is close to ground connection baffle 2 side of isolator mechanism 17 installs, ground connection operating axis 9 one end installs stirring board 16, the handle is installed to the other end, stirring board 16 is the triangle-shaped structure, and all be equipped with the stirring post on every angle, it rotates to drive ground connection operating axis 9 through the handle, ground connection operating axis 9 rotates and drives stirring board 16 and rotate, isolator mechanism 17 is last to install first axle sleeve 8, ground connection baffle 2 can reciprocate along first axle sleeve 8, make things convenient for ground connection baffle 2 to reciprocate along it through first axle sleeve 8, travel switch 10 is installed to support 5 inner walls, 6 tops of square bar are fixed with interlocking diaphragm 3, interlocking diaphragm 3 laminates with the contact on travel switch 10 mutually, suppress travel switch 10 contacts through interlocking diaphragm 3, break-make to internal circuit through travel switch 10.

In this embodiment, when the ground connection is closed, through the application of force to the handle, the handle drives the stirring plate 16 to rotate through the ground connection operation shaft 9, the stirring plate 16 drives the stirring piece 14 to move left along with the rotation, the stirring piece 14 drives the interlocking piece 11 and the locking plate 12 to move left together, the locking plate 12 removes the restriction to the square bar 6 at this moment, the square bar 6 can move up and down, when the square bar 6 moves down, the interlocking transverse plate 3 presses the contact of the travel switch 10, simultaneously, the ground connection baffle 2 is driven to remove the shielding to the ground connection operation shaft 9, when the square bar 6 moves up, the travel switch 10 is released, the pull plate 7 limits the travel of the square bar 6, and the shielding to the ground connection operation shaft 9 by the ground connection baffle 2 is completed simultaneously.

The looped network cabinet body 34 is close to the first hanging door buckle 20 and is provided with a lower door, when high-voltage switch equipment is hung in the lower door, the dead weight of the lower door enables the first hanging door buckle 20 and the second hanging door buckle 21 to respectively drive the first hanging door pull rod 19 and the second hanging door pull rod 22 to move downwards, the pull plate 7, the square rod 6, the interlocking transverse plate 3 and the grounding baffle plate 2 to move downwards, the interlocking transverse plate 3 presses the travel switch 10, the electrical contact is connected, the high-voltage switch equipment is enabled to enter a preparation state, the isolating and linking plate 30 is located at the upper end of a movable range under the stirring of the second cam 26, the isolating and linking plate 30 blocks not only the isolating operation shaft 1 but also the grounding shifting plate 33 from stirring rightwards, the grounding shifting plate 33 blocks the grounding operation shaft 9 of the grounding shaft, and further blocks the opening of an external grounding knife. When the circuit breaker is opened, the second cam 26 and the first cam 18 rotate counterclockwise, the second cam 26 removes the limitation on the isolating interlocking plate 30, the isolating interlocking plate 30 moves downwards under the pulling force of the second tension spring 29, the isolating interlocking plate 30 removes the limitation on the isolating operation shaft 1 and the grounding shifting plate 33, the top end of the first cam 18 limits the second door hanging pull rod 22, at the moment, the second door hanging pull rod 22 cannot move upwards, the lower door is locked, and the grounding switch opening operation can be performed at the moment.

When the switch is grounded and opened, the pulling plate 16 rotates to remove the limitation on the pulling piece 14, the pulling piece 14 returns to the original position under the pulling force of the first tension spring 15, the limitation on the interlocking piece 11 is further removed, the interlocking piece 11 and the locking piece 12 return to the original position under the elastic force of the second spring 13, and the locking piece 12 is inserted into the groove of the square rod 6, so that the upward movement of the square rod 6 is limited, and the lower door is locked.

When the switch is in a working state, the separating interlocking plate 30 is positioned at the upper end of the movable range under the shifting of the second cam 26, the separating interlocking plate 30 blocks the separating operation shaft 1, and blocks the grounding shifting plate 33 to be incapable of shifting rightwards, so that the isolating switch is locked, the top end of the first cam 18 relieves the limitation on the second hanging door pull rod 22, but the aim of locking the lower door is still fulfilled due to the limitation of the grounding switch on the square rod 6.

During power failure operation, after the circuit breaker is disconnected, the isolation interlocking plate 30 releases the limitation on the isolation operation shaft 1 and the grounding shifting plate 33 under the pulling force of the second tension spring 29, meanwhile, the first cam 18 locks the lower door through the second door hanging pull rod 22, the isolation switch opening and grounding switch closing operations are sequentially carried out, when the grounding switch is closed, the limitation on the first door hanging pull rod 19 is released through interlocking, the first cam 18 locks the lower door through the second door hanging pull rod 22 at the moment, finally, the circuit breaker is closed, the grounding loop is conducted, the first cam 18 locks the lower door through the second door hanging pull rod 22, at the moment, the power failure operation is completed, and the lower door can be overhauled after being taken out.

The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.

Claims

1. The utility model provides an isolation circuit breaker cabinet interlock on SF6 full insulation looped netowrk cabinet, its characterized in that, includes looped netowrk cabinet body (34), isolation mechanism (17) and circuit breaker mechanism (28) are installed respectively from top to bottom to inside of looped netowrk cabinet body (34), install between isolation mechanism (17) and circuit breaker mechanism (28) and separate interlocking board (30) absolutely, install second shaft sleeve (27) on isolation mechanism (17), separate interlocking board (30) absolutely and can follow second shaft sleeve (27) and reciprocate absolutely, separate in the middle of interlocking board (30) and be connected with second extension spring (29) with circuit breaker mechanism (28) top, separate interlocking board (30) bottom and be provided with hanging door drive assembly absolutely, separate through isolation operating axis (1) installation between interlocking board (30) and isolation mechanism (17) absolutely, keep away from on isolation mechanism (17) and separate interlocking board (30) one end installing support (5), install square pole (6) that can reciprocate and can remove interlocking piece (12) about moving on support (5), install elastic component between square pole (6) and interlocking piece (12) and support (5), square pole (6) bottom is connected with hanging a coupling assembling, ground connection operating axis (9) are installed to isolator (17) inside being close to ground baffle (2) one side, and ground connection operating axis (9) one end is installed and is dialled board (16), and the handle is installed to the other end, dials board (16) and be the triangle-shaped structure, and all is equipped with on every angle and stirs the post.

2. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 1, wherein the hanging door transmission assembly includes a first cam (18) and a second cam (26), the first cam (18) and the second cam (26) are installed on the isolating mechanism (17) through a connecting shaft, a guide plate (25) installed on the ring main unit (34) is arranged right below the first cam (18), a second hanging door pull rod (22) capable of moving up and down is installed on the guide plate (25), a third spring (23) is sleeved on the second hanging door pull rod (22), a second hanging door buckle (21) is installed on the second hanging door pull rod (22), and an opening pin (24) for limiting the third spring (23) is arranged on the second hanging door pull rod (22).

3. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 1, wherein an earthing baffle (2) is installed between the isolating mechanism (17) and the bracket (5), and an earthing dial plate (33) capable of moving left and right is installed on one side of the isolating mechanism (17) close to the isolating interlock plate (30).

4. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 3, wherein the electromagnet fixing plate (31) is installed on one side of the grounding shifting plate (33) far away from the bracket (5), and the electromagnet (32) is installed on the top of the electromagnet fixing plate (31).

5. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 1, wherein the hanging door connecting assembly includes a pulling plate (7) and a first hanging door pulling rod (19), the pulling plate (7) is fixed at the bottom of the square rod (6), the first hanging door pulling rod (19) is installed at the bottom of the pulling plate (7), and the first hanging door buckle (20) is installed on the first hanging door pulling rod (19).

6. The interlocking device of the isolating circuit breaker cabinet on the SF6 full insulation ring main unit as claimed in claim 1, wherein the elastic component includes a first spring (4) and a second spring (13), the square bar (6) is sleeved with the first spring (4), and the connecting plate (12) is sleeved with the second spring (13).

7. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 1, wherein the connecting lock piece (12) near one end of the grounding shifting plate (33) is installed with a shifting piece (14) located right below the shifting plate (16), the shifting piece (14) is provided with a first tension spring (15) connected with the isolating mechanism (17), and the connecting lock piece (12) for limiting the second spring (13) is fixed on the interlocking piece (12).

8. The interlocking device of the isolating circuit breaker cabinet on the SF6 full insulation ring main unit as claimed in claim 1, wherein the isolating mechanism (17) is installed with a first shaft sleeve (8), and the grounding baffle (2) can move up and down along the first shaft sleeve (8).

9. The interlocking device of the isolating circuit breaker cabinet on the SF6 fully insulated ring main unit as claimed in claim 1, wherein travel switch (10) is installed on the inner wall of the bracket (5), an interlocking transverse plate (3) is fixed on the top of the square rod (6), and the interlocking transverse plate (3) is attached to the contact on the travel switch (10).