CN112053924A - Multi-station indoor high-voltage vacuum circuit breaker - Google Patents

Abstract

The invention provides a multi-station indoor high-voltage vacuum circuit breaker, which includes a control area, a plurality of stations and a linkage mechanism, each station includes an isolation switch, a vacuum circuit breaker and a grounding switch; the isolation switch includes a visible isolation fracture, Isolation contacts, insulating connecting rods, first isolation rotating shaft, second isolation rotating shaft, isolation interlocking limit plate, isolation interlocking slider and connecting rod designed in linkage; Opening and closing button, trip plate, connecting plate, closing brake, circuit breaker closing cam, closing crank arm, first drive shaft, second drive shaft, drive crank arm, support pin, insulating rod, vacuum extinguisher Arc chamber; grounding switch includes grounding operation shaft, grounding interlock limit plate, grounding knife and outgoing wire connecting copper bar. The present invention integrates the isolation switch, the vacuum circuit breaker and the grounding switch, which not only saves space and manufacturing cost, but also has reliable and stable operation performance.

Description

A multi-station indoor high-voltage vacuum circuit breaker

technical field

The invention belongs to the technical field of electrical equipment, and in particular relates to a multi-station indoor high-voltage vacuum circuit breaker.

Background technique

Among the existing electrical equipment, isolation switches, vacuum circuit breakers and grounding switches are generally distributed, which are inconvenient to install, occupy space, and are heavy, and cannot meet the requirements of five-proof interlocking.

SUMMARY OF THE INVENTION

The purpose of the present invention is to aim at the deficiencies of the prior art, provide a kind of multi-position indoor high-voltage vacuum circuit breaker, and the concrete scheme is as follows:

A multi-station indoor high-voltage vacuum circuit breaker includes a control area on the left, a plurality of stations in the middle, and a linkage mechanism on the right, and each of the stations includes an interlocking isolation switch , vacuum circuit breaker and grounding switch; the isolating switch includes a visible isolation fracture connected to the copper bar at the incoming line, an isolation contact designed in linkage, an insulating connecting rod, a first isolation shaft, a second isolation shaft, an isolation interlock limit Bit plate, isolation interlocking slider and connecting rod; rotating the first isolation shaft through the handle makes the connecting rod drive the second isolation shaft to rotate, and then the insulating rod drives the isolation contact and the visible isolation fracture to open or close; so The vacuum circuit breaker includes a trip coil, a manual opening and closing button, a trip plate, a connecting plate, a closing latch, a circuit breaker closing cam, a closing arm, a first transmission shaft, a second transmission Shaft, transmission arm, support pin, insulating rod, vacuum interrupter; when the break of the vacuum circuit breaker needs to be closed, the electric trip coil or manual closing button can be used to realize the closing of the break of the vacuum circuit breaker; When the fracture of the vacuum circuit breaker needs to be opened, the manual opening button can realize the opening of the fracture of the vacuum circuit breaker; the grounding switch includes a grounding operation shaft, a grounding interlock limit plate, a grounding knife and an outlet connecting copper bar. Rotate the grounding operation shaft to realize the opening or closing of the grounding knife and the connected copper bar.

Based on the above, the control area includes a position locking operating handle, a connecting rod, a closing circuit electrical interlocking travel switch, a support pin, a first connecting lever, a second connecting lever, a first closing lock plate and a second closing lock The operating handle for position locking slides up and down in the slot-shaped hole set on the side panel. When sliding to the lowest end, the connecting rod bears against the electrical interlocking travel switch of the closing circuit to cut off the power supply of the electric closing circuit and realizes the electrical interlocking of the circuit breaker. At the same time, the mechanical linkage of the circuit breaker is realized by the linkage design of the connecting rod, the support pin, the first connecting plate, the second connecting plate, the first closing locking plate and the second closing locking plate to block the trip plate for closing. Lock.

Based on the above, the linkage mechanism includes a circuit breaker interlock limit disk, an isolation interlock limit disk, a ground interlock limit disk, and an interlock limit disk with the circuit breaker, which are rotatably installed and designed in linkage with each other. The interlocking slider is fitted with the isolation interlocking limit plate, the interlocking slider is provided with two slot-shaped holes, and a pin is penetrated through the slot-shaped holes. The locking limit disk and the grounding interlocking limit disk rotate with the switching of the opening and closing positions of the vacuum circuit breaker, the isolating switch and the grounding switch respectively.

The present invention has outstanding substantive features and remarkable progress relative to the prior art, specifically, the present invention has the following advantages:

The present invention is a miniaturized multi-position combination switch integrating isolating switch, vacuum circuit breaker and grounding switch. Interlocking mechanisms are arranged between each other, the operation performance is reliable and stable, and it meets the requirements of "five-proof" interlocking.

Description of drawings

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

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

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

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

FIG. 5 is a state schematic diagram of the linkage mechanism when the vacuum circuit breaker and the isolating switch are opened and the grounding switch is closed in the present invention.

6 is a state schematic diagram of the linkage mechanism when the vacuum circuit breaker, the isolating switch are closed, and the grounding switch is open in the present invention.

In the figure: 1. Incoming copper bar; 2. Visible isolation fracture; 3. Isolation contact; 4. Vacuum interrupter; 5. Insulation rod; 6. Support pin; 7. Transmission arm; 8. Second Drive shaft; 10. First drive shaft; 11. Insulation connecting rod; 12. Second isolation shaft; 13. First isolation shaft; 14. Grounding operation shaft; 15. Grounding knife; 16. Outgoing wire connecting copper bar; 19. Position locking operating handle; 20. Connecting rod; 21. The first connecting plate; 22. The first closing locking plate; 23. The closing arm; 24. The circuit breaker closing Cam; 25. Closing latch; 26. Second closing locking plate; 27. Second connecting plate; 28. Trip coil; 29. Trip plate; 30. Connecting rod; 31. Circuit breaker interlock limit 32. Interlock limit slider; 33. Isolation interlock limit plate; 34. Ground interlock limit plate; 35. Manual closing button; 36. Manual opening button.

Detailed ways

The technical solutions of the present invention will be further described in detail below through specific embodiments.

Example

As shown in FIGS. 1-6 , the present invention provides a multi-station indoor high-voltage vacuum circuit breaker, which includes a control area on the left, a plurality of stations in the middle, and a linkage mechanism on the right. Each The stations all include interlocking isolating switches, vacuum circuit breakers and earthing switches; the isolating switches include a visible isolating fracture 2 connected to the copper bar 1 at the incoming line end, an isolating contact 3 designed in linkage, and an insulating connecting rod. 11. The first isolation shaft 13, the second isolation shaft 12, the isolation interlock limit plate 33, the isolation interlock slider and the connecting rod 30; the first isolation shaft 13 is rotated by the handle so that the connecting rod 30 drives the second isolation shaft 12 Rotate, and then make the insulating connecting rod 11 drive the opening or closing of the isolation contact 3 and the visible isolation fracture 2; the vacuum circuit breaker includes a trip coil 28, a manual opening and closing button, and a trip plate 29 which are arranged in linkage with each other. , connecting plate, closing brake 25, circuit breaker closing cam 24, closing arm 23, first drive shaft 10, second drive shaft 8, drive arm 7, support pin 6, insulating rod 5, vacuum extinguisher Arc chamber 4; when the break of the vacuum circuit breaker needs to be closed, the electric trip coil 28 or the manual closing button 35 can be used to realize the closing of the break of the vacuum circuit breaker; when the break of the vacuum circuit breaker needs to be opened, manually The opening button 36 realizes the opening of the fracture of the vacuum circuit breaker; the grounding switch includes the grounding operation shaft 14, the grounding interlock limit plate 34, the grounding knife 15 and the outlet connecting copper bar 16, which is realized by rotating the grounding operation shaft 14 by the handle. The grounding knife 15 is opened or closed with the occurrence of connecting copper bars.

The above-mentioned control area includes the position locking operation handle 19, the connecting rod 20, the closing circuit electrical interlocking travel switch 18, the support pin 6, the first connecting lever, the second connecting lever, the first closing lock plate 22 and the second closing The locking plate 26 and the position locking operating handle 19 slide up and down in the slot-shaped hole provided on the side panel. When sliding to the lowest end, the connecting rod 20 resists the closing circuit electrical interlocking travel switch 18 to cut off the power supply of the electric closing circuit and realizes the circuit breaker At the same time, through the linkage design of the connecting rod 20, the support 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 closing use is blocked. The trip plate 29 realizes the mechanical interlocking of the circuit breaker.

The linkage mechanism includes a circuit breaker interlock limit disk 31, an isolation interlock limit disk 33, a ground interlock limit disk 34, and an interlock limit disk 31 with the circuit breaker, which are rotatably installed and designed in linkage with each other. 2. The interlocking slider installed with the isolation interlocking limit plate 33, the interlocking slider is provided with two slot-shaped holes, the slot-shaped holes are provided with pins, and the circuit breaker interlocking limit plate 31 , The isolation interlock limit plate 33 and the grounding interlock limit plate 34 rotate with the switching of the opening and closing positions of the vacuum circuit breaker, the isolating switch, and the grounding switch respectively.

The specific operation principle of the present invention: when the power is turned on, the grounding switch is first rotated to the opening position, the concave arc of the grounding interlock limit disk 34 faces the isolation interlock limit disk 33, and the isolation limit disk can be unlocked and rotated. The isolating switch is brought to the closing position, and the interlocking limit slider 32 slides into the concave arc of the isolating opening limit plate. At this time, the circuit breaker interlocking limit plate 31 is unlocked from the operating position, and the locking handle is in the locking position. When the circuit breaker can be operated to the closed state, the power-on work is completed

When power off operation, first operate the circuit breaker to the opening position, the interlock limit slider 32 is concave arc against the circuit breaker interlock limit plate 31, the isolation interlock limit plate 33 is unlocked, and the rotation can be operated at this time. When the isolating switch is at the opening position, the concave arc of the isolating interlocking limit plate 33 faces the grounding interlocking limit plate 34, and the grounding interlocking limit plate 34 is unlocked. At this time, the grounding switch can be operated to the closing position, and the power is turned off. Work done.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand: The specific embodiments of the invention are modified or some technical features are equivalently replaced; without departing from the spirit of the technical solutions of the present invention, all of them should be included in the scope of the technical solutions claimed in the present invention.

Claims (3)

1. A multi-station indoor high-voltage vacuum circuit breaker is characterized in that: comprising a control area located on the left side, a plurality of stations located in the middle position and a linkage mechanism located on the right side, and each described station includes Interlocking isolating switch, vacuum circuit breaker and grounding switch; the isolating switch includes a visible isolating fracture connected to the copper bar at the incoming line, an isolating contact designed in linkage, an insulating connecting rod, a first isolating shaft, a second isolating Rotating shaft, isolation interlocking limit plate, isolation interlocking slider and connecting rod; the first isolation rotating shaft is rotated by the handle so that the connecting rod drives the second isolation rotating shaft to rotate, and then the insulating rod drives the separation between the isolation contact and the visible isolation fracture. The vacuum circuit breaker includes a trip coil, a manual opening and closing button, a trip plate, a connecting plate, a closing latch, a circuit breaker closing cam, a closing arm, a first Drive shaft, second drive shaft, drive arm, support pin, insulating rod, vacuum interrupter; when the break of the vacuum circuit breaker needs to be closed, the vacuum circuit breaker can be realized through the electric trip coil or the manual closing button The closing of the fracture; when the fracture of the vacuum circuit breaker needs to be opened, the manual opening button realizes the opening of the fracture of the vacuum circuit breaker; the grounding switch includes the grounding operation shaft, the grounding interlock limit plate, the grounding knife and the outlet. Connect the copper bar, and turn the grounding operation shaft through the handle to realize the opening or closing of the grounding knife and the connected copper bar. 2. The multi-position indoor high-voltage vacuum circuit breaker according to claim 1, wherein the control area comprises a position locking operating handle, a connecting rod, a closing circuit electrical interlocking travel switch, a support pin, a first The chain pull, the second chain pull, the first closing locking plate and the second closing locking plate, the position locking operation handle slides up and down in the grooved hole set on the side panel, when sliding to the lowest end, the connecting rod withstands the closing The circuit electrical interlocking travel switch cuts off the power supply of the electric closing circuit to realize the electrical interlocking of the circuit breaker. The interlocking design of the blocking plate blocks the tripping plate for closing to realize the mechanical interlocking of the circuit breaker. 3. The multi-position indoor high-voltage vacuum circuit breaker according to claim 2, wherein the linkage mechanism comprises a circuit breaker interlocking limit plate, an isolation interlocking limit plate, which are rotatably installed and designed in linkage with each other. disk, grounding interlocking limit disk, and interlocking slider installed in cooperation with the circuit breaker interlocking limit disk and the isolation interlocking limit disk, the interlocking slider is provided with two slot-shaped holes, so There are pins running through the slot-shaped holes, the circuit breaker interlock limit plate, the isolation interlock limit plate, and the grounding interlock limit plate respectively change with the opening and closing positions of the vacuum circuit breaker, isolation switch, and grounding switch. And turn.

Images