CN212750797U

CN212750797U - Multi-station indoor high-voltage vacuum circuit breaker

Info

Publication number: CN212750797U
Application number: CN202022205233.9U
Authority: CN
Inventors: 陈术月; 刘明亮; 张大权; 江义; 甘恩泽
Original assignee: Xinyang Benyue Electric Co ltd
Current assignee: Benyue Electric Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-03-19
Anticipated expiration: 2030-09-30

Abstract

The utility model provides a multistation indoor high-voltage vacuum circuit breaker, including control district, a plurality of stations and link gear, every station all includes isolator, vacuum circuit breaker and earthing switch; the isolating switch comprises a visible isolating fracture, an isolating contact, an insulating connecting rod, a first isolating rotating shaft, a second isolating rotating shaft, an isolating interlocking limiting disc, an isolating interlocking sliding block and a connecting rod which are in linkage design; the vacuum circuit breaker comprises a tripping coil, a manual switching-on and switching-off button, a tripping plate, a connecting plate, a switching-on pawl, a circuit breaker switching-on cam, a switching-on crank arm, a first transmission shaft, a second transmission shaft, a transmission crank arm, a supporting pin, an insulating pull rod and a vacuum arc extinguish chamber which are mutually linked; the earthing switch comprises an earthing operation shaft, an earthing interlocking limit disc, an earthing knife and an outgoing line connecting copper bar. The utility model discloses to collect isolator, vacuum circuit breaker, earthing switch design as an organic whole, not only save space and manufacturing cost, operating performance is reliable, stable moreover.

Description

Multi-station indoor high-voltage vacuum circuit breaker

Technical Field

The utility model belongs to the technical field of electrical equipment, concretely relates to indoor high-pressure vacuum circuit breaker of multistation.

Background

Among the existing electrical equipment, an isolating switch, a vacuum circuit breaker and a grounding switch are generally distributed, so that the existing electrical equipment is inconvenient to install, occupies large space and is heavy in weight, and the requirement of five-prevention interlocking cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art, provide an indoor high-pressure vacuum circuit breaker of multistation, concrete scheme is as follows:

a multi-station indoor high-voltage vacuum circuit breaker comprises a control area positioned on the left side, a plurality of stations positioned in the middle position and a linkage mechanism positioned on the right side, wherein each station comprises a disconnecting switch, a vacuum circuit breaker and a grounding switch which are mutually interlocked; the isolating switch comprises a visible isolating fracture connected with a copper bar at the wire inlet end, and an isolating contact, an insulating connecting rod, a first isolating rotating shaft, a second isolating rotating shaft, an isolating interlocking limiting disc, an isolating interlocking sliding block and a connecting rod which are in linkage design; the first isolation rotating shaft is rotated through the handle, so that the connecting rod drives the second isolation rotating shaft to rotate, and then the insulation connecting rod drives the isolation contact to be opened or closed with the visible isolation fracture; the vacuum circuit breaker comprises a tripping coil, a manual switching-on and switching-off button, a tripping plate, a connecting plate, a switching-on pawl, a circuit breaker switching-on cam, a switching-on crank arm, a first transmission shaft, a second transmission shaft, a transmission crank arm, a supporting pin, an insulating pull rod and a vacuum arc extinguish chamber which are mutually linked; when the fracture of the vacuum circuit breaker needs to be switched on, the switching on of the fracture of the vacuum circuit breaker can be realized through an electric trip coil or a manual switching-on button; when the fracture of the vacuum circuit breaker needs to be opened, the manual opening button is used for opening the fracture of the vacuum circuit breaker; the earthing switch comprises an earthing operation shaft, an earthing interlocking limit disc, an earthing knife and an outgoing line connecting copper bar, and the earthing knife and the outgoing line connecting copper bar are switched off or switched on by rotating the earthing operation shaft through a handle.

Based on the above, the control area comprises a position locking operating handle, a connecting rod, a closing loop electric interlocking stroke switch, a supporting pin, a first connecting plate, a second connecting plate, a first closing locking plate and a second closing locking plate, wherein the position locking operating handle slides up and down in a groove-shaped hole formed in the side panel, when the position locking operating handle slides to the lowest end, the connecting rod abuts against the closing loop electric interlocking stroke switch to cut off an electric closing loop power supply, the electric interlocking of the circuit breaker is realized, and meanwhile, a tripping plate for closing is blocked through the linkage design of the connecting rod, the supporting pin, the first connecting plate, the second connecting plate, the first closing locking plate and the second closing locking plate, so that the mechanical interlocking of the circuit breaker is realized.

Based on the above, link gear including rotate the installation and each other the linkage design the spacing dish of circuit breaker interlocking, keep apart spacing dish of interlocking, the spacing dish of ground connection interlocking and with the spacing dish of circuit breaker interlocking, the interlocking slider of the spacing cooperation installation of the spacing dish of isolation interlocking, be provided with two slotted holes on the interlocking slider, the slotted hole is interior to run through and is equipped with the pin, and the spacing dish of circuit breaker interlocking, the spacing dish of isolation interlocking, the spacing dish of ground connection interlocking rotate along with the conversion of vacuum circuit breaker, isolator, earthing switch branch, closing position respectively.

The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model has the following advantages:

the utility model relates to a section collection isolator, vacuum circuit breaker, earthing switch miniaturized multistation combination switch as an organic whole sets up interlocking device each other, and operating performance is reliable, stable, satisfies "five prevent" interlocking requirement.

Drawings

Fig. 1 is a schematic structural diagram of the middle station of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a right side view of the present invention.

Fig. 4 is a left side view of the present invention.

Fig. 5 is the state diagram of the linkage mechanism when the vacuum circuit breaker, the disconnecting switch and the grounding switch are switched on.

Fig. 6 is a schematic diagram of the state of the linkage mechanism when the vacuum circuit breaker, the disconnecting switch are switched on and the grounding switch is switched off.

In the figure: 1. copper bars at the wire inlet ends; 2. isolated fractures are visible; 3. isolating the contacts; 4. a vacuum arc-extinguishing chamber; 5. an insulating pull rod; 6. a support pin; 7. a transmission crank arm; 8. a second drive shaft; 10. a first drive shaft; 11. an insulating connecting rod; 12. a second isolation rotating shaft; 13. a first isolation rotating shaft; 14. a ground operating shaft; 15. a grounding knife; 16. the outgoing line is connected with the copper bar; 18. a closing loop is electrically interlocked with a travel switch; 19. a position locking operating handle; 20. a connecting rod; 21. a first connecting plate; 22. a first closing locking plate; 23. a switching-on crank arm; 24. a breaker closing cam; 25. closing a brake; 26. a second closing locking plate; 27. a second connecting plate; 28. a trip coil; 29. a releasing plate; 30. a connecting rod; 31. a circuit breaker interlocking limiting disc; 32. interlocking limit sliders; 33. isolating and interlocking limiting discs; 34. a grounding interlocking limiting disc; 35. a manual closing button; 36. and a manual brake-separating button.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

Examples

As shown in fig. 1-6, the present invention provides a multi-station indoor high-voltage vacuum circuit breaker, which comprises a control area on the left side, a plurality of stations in the middle position, and a linkage mechanism on the right side, wherein each station comprises an isolating switch, a vacuum circuit breaker and a grounding switch which are interlocked with each other; the isolating switch comprises a visible isolating fracture 2 connected with a copper bar 1 at a wire inlet end, an isolating contact 3 in linkage design, an insulating connecting rod 11, a first isolating rotating shaft 13, a second isolating rotating shaft 12, an isolating interlocking limiting disc 33, an isolating interlocking sliding block and a connecting rod 30; the first isolation rotating shaft 13 is rotated through the handle, so that the connecting rod 30 drives the second isolation rotating shaft 12 to rotate, and then the insulation connecting rod 11 drives the isolation contact 3 to be switched off or switched on with the visible isolation fracture 2; the vacuum circuit breaker comprises a tripping coil 28, a manual switching-on and switching-off button, a tripping plate 29, a connecting plate, a switching-on pawl 25, a circuit breaker switching-on cam 24, a switching-on connecting lever 23, a first transmission shaft 10, a second transmission shaft 8, a transmission connecting lever 7, a supporting pin 6, an insulating pull rod 5 and a vacuum arc-extinguishing chamber 4 which are mutually linked; when the fracture of the vacuum circuit breaker needs to be switched on, the switching on of the fracture of the vacuum circuit breaker can be realized through the electric trip coil 28 or the manual switching-on button 35; when the fracture of the vacuum circuit breaker needs to be opened, the manual opening button 36 is used for opening the fracture of the vacuum circuit breaker; the grounding switch comprises a grounding operation shaft 14, a grounding interlocking limiting disc 34, a grounding knife 15 and an outgoing line connecting copper bar 16, and the grounding operation shaft 14 is rotated through a handle to realize the switching-off or switching-on of the grounding knife 15 and the outgoing line connecting copper bar.

The control area comprises a position locking operation handle 19, a connecting rod 20, a closing loop electric interlocking stroke switch 18, a supporting pin 6, a first connecting plate, a second connecting plate, a first closing locking plate 22 and a second closing locking plate 26, wherein the position locking operation handle 19 slides up and down in a groove-shaped hole formed in a side panel, when the position locking operation handle slides to the lowest end, the connecting rod 20 abuts against the closing loop electric interlocking stroke switch 18 to cut off the electric closing loop power supply, the electric interlocking of the circuit breaker is realized, and meanwhile, the mechanical interlocking of the circuit breaker is realized by a tripping plate 29 for blocking closing through the linkage design of the connecting rod 20, the supporting pin 6, the first connecting plate 21, the second connecting plate 27, the first closing locking plate 22 and the second closing locking plate 26.

The link gear is including rotating the installation and the spacing dish 31 of circuit breaker interlocking, the spacing dish 33 of isolation interlocking, the spacing dish 34 of ground connection interlocking of linkage design each other and with the spacing dish 31 of circuit breaker interlocking, the interlocking slider of the spacing dish 33 cooperation installation of isolation interlocking, be provided with two slotted holes on the interlocking slider, the slotted hole is interior to run through and is equipped with the pin, and the spacing dish 31 of circuit breaker interlocking, the spacing dish 33 of isolation interlocking, the spacing dish 34 of ground connection interlocking rotate along with the conversion of vacuum circuit breaker, isolator, earthing switch branch, closing position respectively.

The utility model discloses specific theory of operation: when the circuit breaker is powered on, firstly, the grounding switch is rotated to the opening position, the concave arc of the grounding interlocking limiting disc 34 faces the isolating interlocking limiting disc 33, the isolating limiting disc is unlocked to operate the rotating isolating switch to the closing position, meanwhile, the interlocking limiting sliding block 32 slides into the concave arc of the isolating opening limiting disc, the circuit breaker is unlocked by the circuit breaker interlocking limiting disc 31, the locking handle of the operating position is unlocked to the locking position, the circuit breaker is unlocked by the circuit breaker electric circuit, the circuit breaker can be operated to the closing state, and the power-on work is completed

When the circuit breaker is powered off, the circuit breaker is operated to a brake opening position, the interlocking limiting slide block 32 faces the concave arc of the circuit breaker interlocking limiting disc 31, the isolation interlocking limiting disc 33 is unlocked, the disconnecting switch can be operated to the brake opening position at the moment, the concave arc of the isolation interlocking limiting disc 33 faces the grounding interlocking limiting disc 34 at the moment, the grounding interlocking limiting disc 34 is unlocked, the grounding switch can be operated to a brake closing position at the moment, and the power-off work is completed.

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 it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides an indoor high-pressure vacuum circuit breaker of multistation which characterized in that: the device comprises an operation area positioned on the left side, a plurality of stations positioned in the middle and a linkage mechanism positioned on the right side, wherein each station comprises an isolating switch, a vacuum circuit breaker and a grounding switch which are mutually interlocked; the isolating switch comprises a visible isolating fracture connected with a copper bar at the wire inlet end, and an isolating contact, an insulating connecting rod, a first isolating rotating shaft, a second isolating rotating shaft, an isolating interlocking limiting disc, an isolating interlocking sliding block and a connecting rod which are in linkage design; the first isolation rotating shaft is rotated through the handle, so that the connecting rod drives the second isolation rotating shaft to rotate, and then the insulation connecting rod drives the isolation contact to be opened or closed with the visible isolation fracture; the vacuum circuit breaker comprises a tripping coil, a manual switching-on and switching-off button, a tripping plate, a connecting plate, a switching-on pawl, a circuit breaker switching-on cam, a switching-on crank arm, a first transmission shaft, a second transmission shaft, a transmission crank arm, a supporting pin, an insulating pull rod and a vacuum arc extinguish chamber which are mutually linked; when the fracture of the vacuum circuit breaker needs to be switched on, the switching on of the fracture of the vacuum circuit breaker is realized through an electric trip coil or a manual switching-on button; when the fracture of the vacuum circuit breaker needs to be opened, the manual opening button is used for opening the fracture of the vacuum circuit breaker; the earthing switch comprises an earthing operation shaft, an earthing interlocking limit disc, an earthing knife and an outgoing line connecting copper bar, and the earthing knife and the outgoing line connecting copper bar are switched off or switched on by rotating the earthing operation shaft through a handle.

2. A multi-station indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: the control area comprises a position locking operating handle, a connecting rod, a closing circuit electric interlocking travel switch, a supporting pin, a first connecting plate, a second connecting plate, a first closing locking plate and a second closing locking plate, the position locking operating handle slides up and down in a groove-shaped hole formed in the side panel, when the position locking operating handle slides to the lowest end, the connecting rod props against the closing circuit electric interlocking travel switch to cut off an electric closing circuit power supply, electric interlocking of the circuit breaker is achieved, and meanwhile, a tripping plate for closing is blocked through the linkage design of the connecting rod, the supporting pin, the first connecting plate, the second connecting plate, the first closing locking plate and the second closing locking plate, so that mechanical interlocking of the circuit breaker is achieved.

3. A multi-station indoor high-voltage vacuum circuit breaker according to claim 2, characterized in that: the link gear including rotate the installation and each other the spacing dish of circuit breaker interlocking of linkage design, keep apart spacing dish of interlocking, the spacing dish of ground connection interlocking and with the spacing dish of circuit breaker interlocking, the interlocking slider of the spacing dish cooperation installation of isolation interlocking, be provided with two slotted holes on the interlocking slider, the slotted hole is interior to run through and is equipped with the pin, and the spacing dish of circuit breaker interlocking, the spacing dish of isolation interlocking, the spacing dish of ground connection interlocking rotate along with the conversion of vacuum circuit breaker, isolator, earthing switch branch, closing position respectively.