CN216928337U

CN216928337U - Vacuum load switch

Info

Publication number: CN216928337U
Application number: CN202122880709.3U
Authority: CN
Inventors: 郑杭
Original assignee: Zealwell Electric Co ltd
Current assignee: Zealwell Electric Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-07-08
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a vacuum load switch, which relates to the technical field of circuit equipment and comprises a metal frame and an insulating seat, wherein the metal frame is fixedly connected with the insulating seat, an upper outgoing line is arranged at the top end of one side of the insulating seat, an isolating switch is arranged at the side end of the upper outgoing line, a lower outgoing line is arranged at the top end of the other side of the insulating seat, a tripping plate is arranged on the lower outgoing line, a fuse is arranged at the side end of the insulating seat, a grounding switch is arranged at one side of the metal frame, a vacuum arc-extinguishing chamber is arranged on the metal frame, the grounding switch is arranged between two adjacent vacuum arc-extinguishing chambers, a spring mechanism is arranged on the metal frame, and a control panel is arranged at the side end of the metal frame. The whole device with excellent insulating property and continuous property is suitable for different environments, and the safety of operators and equipment is ensured by the stability and the reliability of the operation of the whole device realized by different mechanical interlocking and electrical interlocking, so that the power utilization safety is ensured.

Description

Vacuum load switch

Technical Field

The utility model relates to the technical field of circuit equipment, in particular to a vacuum load switch.

Background

The vacuum load switch plays a role in rated cut-off in a transmission line and mainly comprises an opening and closing brake action structure for realizing the cut-off and the cut-on of the line, a four-rod interlocking structure for driving the opening and closing brake action structure to act, an interlocking clutch structure and an operation panel structure for providing an operation space for an operator, wherein the four-rod interlocking structure comprises an opening and closing brake operating rod and a load switch operating rod, and the interlocking clutch structure is used for opening or closing the opening and closing brake operating rod to enable the load switch operating rod to be connected or disconnected, so that the operator cannot operate the load switch operating rod in a closing state to ensure the safety. The application number is CN2018201629442 and discloses a vacuum load switch, which comprises a mounting frame, wherein three switch units are arranged on the mounting frame, the three switch units and the mounting frame form a three-phase integrated structure, each switch unit comprises an insulating cylinder, a static contact assembly and a moving contact assembly, the static contact assembly and the moving contact assembly are respectively arranged at the upper end and the lower end of the insulating cylinder, the moving contact assembly is in contact with the inner wall of the insulating cylinder to form an arc extinguish chamber, the insulating cylinder is in a corrugated pipe shape, and an even cover in a conical frustum shape is arranged at the periphery of the insulating cylinder corresponding to the static contact assembly. The existing vacuum switch can not be used in places with serious pollution, and has poor operation stability and reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a vacuum load switch.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a vacuum load switch, includes metal crate, the last insulating seat that is equipped with of metal crate, metal crate and insulating seat fastening connection, insulating seat one side top is equipped with goes out the line, it is equipped with isolator to go out the line side on going out the line, insulating seat opposite side top is equipped with down and is qualified for the next round of competitions, it is equipped with the dropout board to go out to be equipped with down on the line, the insulating seat side is equipped with the fuse, one side of metal crate is equipped with earthing switch, the last one side for earthing switch that is equipped with of metal crate, earthing switch sets up between two adjacent vacuum interrupter, the last spring mechanism that is equipped with of metal crate side, the metal crate side is equipped with control panel.

As a further scheme of the present invention, an upper fuse clip is disposed on one side of the fuse, a lower fuse clip is disposed on the other side of the fuse, and the fuse is connected to the insulating base through the upper fuse clip and the lower fuse clip.

As a still further aspect of the present invention, the upper fuse clip side end is provided with a soft coupling.

As a still further aspect of the present invention, a mechanical interlock is provided on the earthing switch.

As a further aspect of the present invention, the disconnecting switch and the grounding switch are linked, and the disconnecting switch is closed at the same time after the grounding switch is separated.

As a further scheme of the utility model, the isolating switch is of a rotary type, and the isolating switch has an obvious fracture after being switched off.

The vacuum load switch provided by the embodiment of the utility model has the beneficial effects that:

the whole device with excellent insulating property and continuous performance is suitable for different environments, and the safety of operators and equipment is ensured by the stability and reliability of the operation of the whole device realized by different mechanical interlocking and electrical interlocking, so that the power utilization safety is ensured; a mechanical interlock is arranged between the vacuum load switch and the isolating (grounding) switch to prevent misoperation, so that the vacuum load switch can be closed after the isolating switch is closed, and the isolating switch can be opened after the vacuum load switch is closed; the fuse presss from both sides and presss from both sides with lower fuse through last fuse and be connected with insulating seat, and then realizes the quick-connect installation dismantlement work of fuse, goes up the fuse and presss from both sides and be 45 fuse clamps with lower fuse clamp, and then convenient to detach changes whole fuse.

Drawings

Fig. 1 is a schematic structural diagram of a vacuum load switch provided in the present application.

Fig. 2 is a schematic side view of a vacuum load switch.

In the figure: 1. an upper outgoing line; 2. an isolating switch; 3. an insulating base; 4. soft connection; 5. an upper fuse clip; 6. a fuse; 7. a lower fuse clip; 8. a releasing plate; 9. a lower outgoing line; 10. A metal frame; 11. a vacuum arc-extinguishing chamber; 12. a spring mechanism; 13. a control panel; 14. and a grounding switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1 and 2, a structure diagram of a vacuum load switch provided in an embodiment of the present application includes a metal frame 10, the metal frame 10 is provided with an insulating base 3, the metal frame 10 is fastened to the insulating base 3, a top end of one side of the insulating base 3 is provided with an upper outgoing line 1, a side end of the upper outgoing line 1 is provided with an isolation switch 2, a top end of the other side of the insulating base 3 is provided with a lower outgoing line 9, the upper outgoing line 1 and the lower outgoing line 9 are respectively externally connected with a circuit, a tripping plate 8 is provided on the lower outgoing line 9 to further achieve connection of the lower outgoing line 9, a side end of the insulating base 3 is provided with a fuse 6, when a current in the load switch exceeds a predetermined value, a melt is fused by heat generated by itself to break the circuit, a grounding switch 14 is provided on one side of the metal frame 10, a vacuum arc extinguish chamber 11 is provided on one side of the metal frame 10 opposite to the grounding switch 14, a contact capable of generating a transverse magnetic field is applied in the arc extinguish chamber in this embodiment, in the contact of the transverse magnetic field, when the instantaneous current reaches 10KA, the electric arc is in a diffusion type, higher current forms a gathering type electric arc, the grounding switch 14 is arranged between two adjacent vacuum arc-extinguishing chambers 11, the spring mechanism 12 is arranged on the metal frame 10, and the control panel 13 is arranged at the side end of the metal frame 10 and used for controlling the whole load switch.

In a condition of this embodiment, 6 one sides of fuse are equipped with the fuse and press from both sides 5, and 6 opposite sides of fuse are equipped with down the fuse and press from both sides 7, and fuse 6 presss from both sides 5 and lower fuse through last fuse and presss from both sides 7 and be connected with insulating seat 3, and then realize the quick-operation joint installation dismantlement work of fuse 6, goes up the fuse and presss from both sides 5 and press from both sides 7 with lower fuse and be 45 fuse and press from both sides, and then convenient to detach changes whole fuse 6.

Furthermore, the side end of the upper fuse clip 5 is provided with a soft connection 4, the soft connection 4 is a copper braided wire soft connection, and therefore the electric conductivity and the errors during installation of trimming equipment can be improved.

As shown in fig. 1, as a preferred embodiment of the present application, a mechanical interlock is provided on the earthing switch 14 to ensure the interlocking of the earthing switch 14 with the entire load switch during operation.

In one case of the embodiment, the disconnecting switch 2 and the grounding switch 14 are linked, and the disconnecting switch 2 is closed at the same time after the grounding switch 14 is separated, so that the normal operation of the disconnecting switch 2 and the grounding switch 14 is realized.

Furthermore, isolator 2 is the rotation type, has obvious fracture behind the isolator 2 separating brake, and then guarantees the user of service through the clear use state who judges whole device of fracture when using.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The vacuum load switch comprises a metal frame (10) and is characterized in that an insulating seat (3) is arranged on the metal frame (10), the metal frame (10) is fixedly connected with the insulating seat (3), an upper outgoing line (1) is arranged at the top end of one side of the insulating seat (3), an isolating switch (2) is arranged at the side end of the upper outgoing line (1), a lower outgoing line (9) is arranged at the top end of the other side of the insulating seat (3), a tripping plate (8) is arranged on the lower outgoing line (9), a fuse (6) is arranged at the side end of the insulating seat (3), a grounding switch (14) is arranged at one side of the metal frame (10), a vacuum arc extinguish chamber (11) is arranged at one side of the metal frame (10) relative to the grounding switch (14), the grounding switch (14) is arranged between two adjacent vacuum arc extinguish chambers (11), a spring mechanism (12) is arranged on the metal frame (10), and a control panel (13) is arranged at the side end of the metal frame (10).

2. A vacuum load switch according to claim 1, characterized in that the fuse (6) is provided with an upper fuse clamp (5) on one side and a lower fuse clamp (7) on the other side, the fuse (6) being connected to the insulating base (3) via the upper fuse clamp (5) and the lower fuse clamp (7).

3. A vacuum load switch according to claim 2, characterized in that the upper fuse clip (5) is provided with a soft coupling (4) at its lateral end.

4. A vacuum load switch according to claim 1, characterized in that the earthing switch (14) is provided with a mechanical interlock.

5. A vacuum load switch according to claim 1, characterized in that the disconnector (2) is coupled to the earthing switch (14), and the disconnector (2) is closed at the same time as the earthing switch (14) is disconnected.

6. A vacuum load switch according to claim 1, characterized in that the disconnector (2) is of the rotary type, the disconnector (2) having a sharp break after tripping.