CN219394199U - Novel environment-friendly gas-insulated ring main unit - Google Patents

Abstract

The utility model discloses a novel environment-friendly gas-insulated ring main unit, which comprises a ring main unit body, a mounting frame, a vacuum circuit breaker assembly, a disconnecting switch assembly, a circuit breaker insulation driving shaft, an upper incoming line row and a grounding knife assembly, wherein the vacuum circuit breaker assembly is erected on the mounting frame in the ring main unit body, the disconnecting switch assembly and the circuit breaker insulation driving shaft which can be driven to rotate by an external driving piece are erected on the upper part and the lower part of the mounting frame, the upper incoming line row and the grounding knife assembly which can be rotationally communicated with the disconnecting switch assembly are arranged on the ring main unit body above the disconnecting switch assembly, and the circuit breaker insulation driving shaft is rotationally and directly driven to switch the vacuum circuit breaker assembly. By the mode, the flexible connection installation device reduces complex connection installation parts, saves installation space, is stable in action, is flexibly connected, avoids action stretching damage parts, is compact in structure and reliable in insulation safety distance, and effectively reduces the structural size of the switch cabinet.

Description

Novel environment-friendly gas-insulated ring main unit

Technical Field

The utility model relates to the technical field of electricity, in particular to a novel environment-friendly gas-insulated ring main unit.

Background

The environment-friendly gas is used for replacing SF6 gas in the ring main unit, the insulating property of the environment-friendly gas (N2, dry air and the like) is good, the installation distance of components in the ring main unit needs to be lengthened, the vacuum arc-extinguishing chamber in the ring main unit is mainly installed on the side plate or the bottom plate of the ring main unit in a side-mounted, inverted or transverse mode, the environment-friendly gas in the ring main unit is poor in marginality, other components need to be kept away from, so that the performance is not influenced by the strength of an electric field, the ring main unit needs to be widened and lengthened, the cost is high, more space is occupied, and the design in the ring main unit needs to be optimized.

The Chinese patent with the patent number of 2021232997103 discloses an environment-friendly gas-insulated ring main unit, and a circuit breaker driving shaft drives a vacuum circuit breaker assembly in a vacuum arc-extinguishing chamber to perform closing and isolating actions by driving an insulating pull rod, so that the circuit breaker driving shaft has the advantages of more connecting pieces, complex structure, low transmission reliability and occupation of more space, and complicated structure and complex installation and processing of the patent installation frame 8 for installing each internal assembly.

Based on the defects and shortcomings, the prior art needs to be improved, and a novel environment-friendly gas-insulated ring main unit is designed.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the novel environment-friendly gas-insulated ring main unit, wherein the insulating driving shaft of the circuit breaker directly drives the switch of the vacuum circuit breaker assembly, reduces complex connecting installation parts, saves installation space, has stable action, is flexibly connected and elastically connected, avoids action stretching damage parts, has compact structure and reliable insulating safety distance, and effectively reduces the structural size of the switch cabinet.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a novel environment-friendly gas-insulated looped netowrk cabinet, this kind of novel environment-friendly gas-insulated looped netowrk cabinet include looped netowrk cabinet body, installing frame, vacuum circuit breaker subassembly, isolator subassembly, the insulating drive shaft of circuit breaker, go up inlet wire row and earthing knife subassembly, install the installing frame in the looped netowrk cabinet body, the vacuum circuit breaker subassembly has been erect on the installing frame, installing frame upper portion and lower part have set up can be by external drive spare drive pivoted isolator subassembly and the insulating drive shaft of circuit breaker, install on the looped netowrk cabinet body of isolator subassembly top can rotate the upper inlet wire row and the earthing knife subassembly of switch-on with it, its characterized in that: the vacuum circuit breaker is characterized in that the circuit breaker insulating driving shaft rotates to directly drive a vacuum circuit breaker assembly switch, the vacuum circuit breaker further comprises a soft connection assembly and a lower outlet line, and the lower end of the vacuum circuit breaker assembly is communicated with the lower outlet line at the lower part of the ring main unit body through the soft connection assembly.

Preferably, the radial extension end of the insulating drive shaft of the circuit breaker is provided with an opening clamping groove, the extension end of the lower part of the vacuum circuit breaker assembly is movably inserted and penetrates through the opening clamping groove, the contact spring is sleeved on the contact spring assembly at the lower part of the vacuum circuit breaker assembly above the opening clamping groove, the contact spring assembly at the lower part of the vacuum circuit breaker assembly is linked with the movable contact inside the contact spring assembly at the lower part of the vacuum circuit breaker assembly, and the fixed contact opposite to the movable contact is arranged above the inner part of the vacuum circuit breaker assembly.

Preferably, the axis of the insulating drive shaft of the circuit breaker is made of metal, insulating materials are covered on the metal, umbrella skirts are added, climbing distance is increased to be matched with the mounting frame, and insulation distance and strength are guaranteed.

Preferably, the flexible connection assembly comprises a connecting rod and an elastic connection sheet, wherein the connecting rod and the elastic connection sheet are fixed on the installation frame and are connected with the lower outlet line, one end of the elastic connection sheet is connected with the connecting rod, the other end of the elastic connection sheet is communicated with the contact spring assembly, and the elastic connection sheet is arc-shaped.

Compared with the prior art, the utility model has the beneficial effects that:

the insulating drive shaft of the circuit breaker directly drives the switch and the switch of the vacuum circuit breaker assembly, so that complex connecting installation parts are reduced, the installation space is saved, and the action is stable;

one end of the flexible connection is connected with the vacuum circuit breaker component of the arc extinguishing chamber, and the other end of the flexible connection is directly connected with the lower wire outlet row, so that the structure size is reduced, the flexible connection is realized, and the parts are prevented from being damaged by action and stretching;

the structure designs the grounding position to the other side of the breaker frame, the isolating switch rotates upwards to reach the working position, and rotates downwards to reach the isolating position, so that the structure is compact, the insulating safety distance is reliable, and the structural size of the switch cabinet is effectively reduced.

Drawings

Fig. 1 is a schematic structural diagram of a novel environment-friendly gas-insulated ring main unit.

Fig. 2 is a cross-sectional view of a novel environment-friendly gas-insulated ring main unit.

Fig. 3 is a schematic diagram of a circuit breaker insulation driving shaft structure of the novel environment-friendly gas insulation ring main unit.

Wherein, 1-ring main unit body; 2-mounting a frame; 3-vacuum circuit breaker assembly; 31-contact spring assembly; 32-moving contact; 33-stationary contact; a 4-disconnector assembly; 5-insulating drive shaft of circuit breaker; 50-opening a clamping groove; 51-umbrella skirt; 6-feeding a line row; 7-a grounding knife assembly; 8-a flexible connection assembly; 81-connecting rods; 82-elastic connection pieces; 9-lower outlet row.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to fig. 1 to 3, an embodiment of the present utility model includes:

the utility model provides a novel environment-friendly gas-insulated looped netowrk cabinet, this kind of novel environment-friendly gas-insulated looped netowrk cabinet includes looped netowrk cabinet body 1, mounting frame 2, vacuum circuit breaker subassembly 3, isolator subassembly 4, circuit breaker insulating drive shaft 5, goes up inlet wire row 6 and earthing knife subassembly 7, install mounting frame 2 in the looped netowrk cabinet body 1, the vacuum circuit breaker subassembly 3 has been erect on the mounting frame 2, mounting frame 2 upper portion and lower part have set up can be by external drive spare drive pivoted isolator subassembly 4 and circuit breaker insulating drive shaft 5, install on the looped netowrk cabinet body 1 of isolator subassembly 4 top can rotate the last inlet wire row 6 and earthing knife subassembly 7 of switch-on with it, its characterized in that: the circuit breaker insulating driving shaft 5 rotates to directly drive the vacuum circuit breaker assembly 3 to switch, and further comprises a soft connection assembly 8 and a lower outgoing line row 9, wherein the lower end of the vacuum circuit breaker assembly 3 is communicated with the lower outgoing line row 9 at the lower part of the ring main unit body 1 through the soft connection assembly 8.

The radial extending end of the insulating drive shaft 5 of the circuit breaker is provided with an opening clamping groove 50, a contact spring assembly 31 at the lower part of the vacuum circuit breaker assembly 3 is movably inserted into and penetrates through the opening clamping groove 50, the contact spring assembly 31 is linked with a movable contact 32 in the vacuum circuit breaker assembly 3, and a fixed contact 33 opposite to the movable contact 32 is arranged above the inside of the vacuum circuit breaker assembly 3.

The axle center of the insulating driving shaft 5 of the circuit breaker uses metal materials to ensure the strength, the insulating materials are covered on the metal, meanwhile, umbrella skirts 51 are added, the climbing distance is increased to be matched with the mounting frame 2, and the insulating distance and the strength are ensured.

The flexible connection assembly 8 comprises a connecting rod 81 and an elastic connection sheet 82 which are fixed on the installation frame 2 and connected with the lower wire outlet row 9, one end of the elastic connection sheet 82 is connected with the connecting rod 81, the other end of the elastic connection sheet 82 is communicated with the contact spring assembly 31, and the elastic connection sheet 82 is arc-shaped.

The utility model relates to a novel environment-friendly gas-insulated ring main unit, which comprises the following three states in operation:

closing operation of the ring main unit: the isolating switch assembly 4 is operated to rotate upwards to the upper incoming line row 6, the isolating switch assembly 4 is operated to a working conducting position, the insulating drive shaft 5 of the breaker is operated to drive the contact spring assembly 31 to move upwards, so that the movable contact 32 is driven to move upwards to be communicated with the fixed contact 33, the vacuum breaker assembly 3 of the vacuum arc extinguishing chamber is switched on, and the main loop is conducted;

breaking operation of the circuit breaker: operating the breaker insulating drive shaft 5 to drive the contact spring assembly 31 to move downwards, thereby driving the movable contact 32 to move downwards away from the stationary contact 33, and enabling the vacuum breaker assembly 3 of the vacuum arc extinguishing chamber to break;

isolation grounding operation of ring main unit: the disconnector assembly 4 is operated to rotate to the neutral, to the disconnecting position, to the earthing knife assembly 7, to the earthing position.

The novel environment-friendly gas-insulated ring main unit has the advantages that the insulating driving shaft of the circuit breaker directly drives the switch and the switch of the vacuum circuit breaker assembly, the complex connecting and mounting parts are reduced, the mounting space is saved, the flexible connection is stable, the flexible connection is elastically connected, the parts are prevented from being damaged by action stretching, the structure is compact, the insulating safety distance is reliable, and the structural size of the switch cabinet is effectively reduced.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (4)

1. The utility model provides a novel environment-friendly gas-insulated looped netowrk cabinet, includes looped netowrk cabinet body, installing frame, vacuum circuit breaker subassembly, isolator subassembly, the insulating drive shaft of circuit breaker, goes up inlet wire row and earthing knife subassembly, the internal installing frame that installs of looped netowrk cabinet, the installing frame erects the vacuum circuit breaker subassembly on, installing frame upper portion and lower part have set up can be by external drive spare drive pivoted isolator subassembly and the insulating drive shaft of circuit breaker, install on the looped netowrk cabinet body of isolator subassembly top can rotate the upper inlet wire row and the earthing knife subassembly of switch-on with it, its characterized in that: the vacuum circuit breaker is characterized in that the circuit breaker insulating driving shaft rotates to directly drive a vacuum circuit breaker assembly switch, the vacuum circuit breaker further comprises a soft connection assembly and a lower outlet line, and the lower end of the vacuum circuit breaker assembly is communicated with the lower outlet line at the lower part of the ring main unit body through the soft connection assembly.

2. The novel environment-friendly gas-insulated ring main unit according to claim 1, wherein: the vacuum circuit breaker is characterized in that an opening clamping groove is formed in the radial extending end of the insulating driving shaft of the circuit breaker, the extending end of the lower portion of the vacuum circuit breaker assembly is movably inserted and penetrates through the opening clamping groove, a contact spring is sleeved on the contact spring assembly at the lower portion of the vacuum circuit breaker assembly above the opening clamping groove, the contact spring assembly at the lower portion of the vacuum circuit breaker assembly is in linkage with a movable contact in the vacuum circuit breaker assembly, and a fixed contact opposite to the movable contact is arranged above the inner portion of the vacuum circuit breaker assembly.

3. The novel environment-friendly gas-insulated ring main unit according to claim 2, wherein: the axis of the insulating driving shaft of the circuit breaker is made of metal, insulating materials are covered on the metal, umbrella skirts are added, and the climbing distance is increased to be matched with the mounting frame.

4. A novel environment-friendly gas-insulated ring main unit according to claim 3, wherein: the soft connecting assembly comprises a connecting rod and an elastic connecting piece, wherein the connecting rod and the elastic connecting piece are fixed on the mounting frame and are connected with the lower outgoing line row, one end of the elastic connecting piece is connected with the connecting rod, the other end of the elastic connecting piece is communicated with the contact spring assembly, and the elastic connecting piece is arc-shaped.