CN214588570U

CN214588570U - Improved structure of breaker isolating switch

Info

Publication number: CN214588570U
Application number: CN202120842909.7U
Authority: CN
Inventors: 刘建; 陈金伟; 席抒昊; 刘仁和; 刘海利; 刘雪茹; 张瑞宇; 徐婷; 杜平
Original assignee: State Grid Sichuan Electric Power Co Neijiang Power Supply Co
Current assignee: State Grid Sichuan Electric Power Co Neijiang Power Supply Co
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-02
Anticipated expiration: 2031-04-23

Abstract

The utility model provides a circuit breaker isolator's improvement structure. Breaker isolator's improvement structure includes the switch box, the circular telegram board, conductive structure, control key and protection architecture, install the circular telegram board that a plurality of equidistance distributes on the both sides lateral wall of switch box respectively, conductive structure installs on the switch box, and conductive structure includes the insulation board, extension spring and current conducting plate, the upper surface of insulation board passes through the interior roof elastic connection of extension spring with the switch box, and the lower fixed surface of insulation board installs the current conducting plate control key of a plurality of evenly distributed and installs on the switch box, and the control key is by the knob, depression bar and stopper are constituteed, knob fixed mounting is on the depression bar, and the depression bar inserts and establish in the switch box, stopper fixed mounting is on inserting the lateral wall of establishing the end of depression bar, protection architecture installs on the switch box. The utility model provides a circuit breaker isolator's improvement structure has multiple safeguard function, can avoid the advantage of unexpected emergence.

Description

Improved structure of breaker isolating switch

Technical Field

The utility model relates to an isolator technical field especially relates to a circuit breaker isolator's improvement structure.

Background

The isolating switch, namely when in the separated position, the contacts have the insulation distance meeting the specified requirements and obvious disconnection marks; a switching device capable of carrying current in normal loop conditions and current in abnormal conditions (e.g., short circuit) for a specified period of time when in the closed position. The main characteristic of the isolating switch is that it has no arc-extinguishing capability, and can only open and close the circuit under the condition of no load current. Disconnectors for use with various levels of voltage, for changing circuit connections or for isolating lines or equipment from a power source, have no current interrupting capability and are commonly used in conjunction with circuit breakers.

The existing isolating switch structure does not have a structure for preventing a certain part from being damaged and incapable of working, so that the isolating switch is easy to malfunction, and the workload is brought to maintenance personnel.

Therefore, there is a need to provide a new and improved structure of a disconnector for a circuit breaker to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present invention provides an improved structure with multiple protection functions and capable of avoiding accidents.

The utility model provides a circuit breaker isolator's improvement structure includes: the switch box comprises a switch box body, a plurality of electrifying plates, an electric conduction structure, a control key and a protection structure, wherein the side walls of two sides of the switch box body are respectively provided with the plurality of electrifying plates distributed at equal intervals; the control key is arranged on the switch box and used for controlling the communication between the conductive structure and the electrifying plate; the protection structure for preventing malfunction of the tension spring in the conductive structure is installed on the switch box.

Preferably, the control key comprises a knob, a pressing rod and limiting blocks, the knob is fixedly installed on the pressing rod, the pressing rod is inserted into the switch box, and the two limiting blocks which are symmetrically distributed are fixedly installed on the outer side wall of the inserting end of the pressing rod.

Preferably, protection architecture includes roof, top spring, slide, gag lever post, pressure spring and spacing hole, the bottom of roof is through the interior diapire elastic connection of top spring with the switch box, and the both ends of roof have all seted up the slide, the gag lever post insert establish in the slide and with slide sliding connection, and the gag lever post passes through the inside wall elastic connection of pressure spring with the slide, spacing hole sets up on two relative lateral walls on the switch box.

Preferably, a W-shaped rod is installed in the switch box, one end of the W-shaped rod is rotatably connected with the inner side wall of the switch box, and the other end of the W-shaped rod penetrates through the side wall of the switch box and is fixedly provided with a control block.

Preferably, two rectangular through holes which are symmetrically distributed are formed in the top of the switch box, and the inner diameter of each rectangular through hole is equal to the outer diameter of each limiting block.

Preferably, the top of the switch box is provided with a visual window.

Compared with the prior art, the utility model provides a circuit breaker isolator's improvement structure has following beneficial effect:

1. the current-conducting plate in the conductive structure arranged in the utility model plays the role of a bridge for transmitting current, and the conductive structure and the control key are used in a matching way, so that the current-conducting plate is far away from the current-conducting plate, and the connection of the current-conducting plates at two sides is disconnected;

2. the protection structure arranged in the utility model jacks up the current-conducting plate when the current-conducting plate is far away from the current-conducting plate, thereby avoiding the situation that the current-conducting plate moves down due to the loss of the tension spring, and improving the safety of the isolating switch;

3. the utility model discloses the design of the W shape pole that well set up still can be with circuit disconnection under the effect of extension spring loss elasticity, has saved maintenance personal's time, has improved isolator's life, can also replace protection architecture's effect under the circumstances that protection architecture loses the effect.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of an improved structure of a disconnector of a circuit breaker according to the present invention;

FIG. 2 is a side view of the structure of FIG. 1;

fig. 3 is a schematic front view of the structure shown in fig. 1.

Reference numbers in the figures: 1. a switch box; 2. a power-on plate; 3. a conductive structure; 31. an insulating plate; 32. a tension spring; 33. a conductive plate; 4. a control key; 41. a knob; 42. a pressure lever; 43. a limiting block; 5. a protective structure; 51. a top plate; 52. a spring is supported; 53. a slideway; 54. a limiting rod; 55. a pressure spring; 56. a limiting hole; 6. a W-shaped rod; 7. a control block; 8. a rectangular through hole; 9. and (7) mounting the plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of an improved structure of a disconnector of a circuit breaker according to the present invention; FIG. 2 is a side view of the structure of FIG. 1; fig. 3 is a schematic front view of the structure shown in fig. 1. The method comprises the following steps: switch box 1, circular telegram board 2, conducting structure 3, control key 4 and protection architecture 5.

In the specific implementation process, as shown in fig. 1 and 2, a plurality of conducting plates 2 are respectively mounted on two side walls of a switch box 1, the conducting structures 3 are mounted on the switch box 1, each conducting structure 3 comprises an insulating plate 31, a tension spring 32 and a conducting plate 33, the upper surface of the insulating plate 31 is elastically connected with the inner top wall of the switch box 1 through the tension spring 32, and the lower surface of the insulating plate 31 is fixedly provided with a plurality of conducting plates 33 which are uniformly distributed; the control key 4 is arranged on the switch box 1 and used for controlling the communication between the conductive structure 3 and the electrifying plate 2; a protective structure 5 for preventing failure of the tension spring 32 in the conductive structure 3 is mounted on the switch box 1.

It should be noted that: the current is transmitted from one current-carrying plate 2 to the other current-carrying plate through the current-carrying plate 33, and the current-carrying plate 33 serves as a bridge for transmitting the current.

Referring to fig. 1, the control key 4 is composed of a knob 41, a pressing rod 42 and limiting blocks 43, the knob 41 is fixedly installed on the pressing rod 42, the pressing rod 42 is inserted into the switch box 1, and the two symmetrically distributed limiting blocks 43 are fixedly installed on the outer side wall of the insertion end of the pressing rod 42; two rectangular through holes 8 which are symmetrically distributed are formed in the top of the switch box 1, and the inner diameter of each rectangular through hole 8 is equal to the outer diameter of the limiting block 43.

It should be noted that: when the circuit needs to be disconnected, the circuit breaker disconnects the current, the control key 4 is rotated, the limiting block 43 on the control key 4 is located below the rectangular through hole 8, the insulating plate 31 is enabled to lose support, the conductive plate 33 is driven to be far away from the power-on plate 2 under the elastic action of retraction of the tension spring 32, connection of the power-on plates 2 on two sides is disconnected, and the limiting block 43 is popped out of the switch box 1 from the rectangular through hole 8.

Referring to fig. 1, the protection structure 5 includes a top plate 51, a top spring 52, a slide way 53, a limiting rod 54, a pressure spring 55 and a limiting hole 56, the bottom of the top plate 51 is elastically connected to the inner bottom wall of the switch box 1 through the top spring 52, the slide way 53 is opened at both ends of the top plate 51, the limiting rod 54 is inserted into the slide way 53 and slidably connected to the slide way 53, the limiting rod 54 is elastically connected to the inner side wall of the slide way 53 through the pressure spring 55, and the limiting hole 56 is disposed on two opposite side walls of the switch box 1.

It should be noted that: when the conducting plate 33 is far away from the conducting plate 2, the top plate 51 moves upwards under the action of the top spring 52, and when the limiting rod 54 is located at the limiting hole 56, the limiting rod slides into the limiting hole 56 under the action of the elastic force of the pressure spring 55, so that the situation that the conducting plate 33 moves downwards due to the fact that the tension spring 32 loses effect can be avoided, and the safety of the isolating switch is improved.

Referring to fig. 2 and 3, a W-shaped rod 6 is installed in the switch box 1, one end of the W-shaped rod 6 is rotatably connected with the inner side wall of the switch box 1, the other end of the W-shaped rod 6 penetrates through the side wall of the switch box 1 and is fixedly provided with a control block 7, and a visualization window 9 is arranged at the top of the switch box 1.

It should be noted that: when the circuit is disconnected, whether the protection structure 5 plays a role through the limiting hole 56, if not, whether the circuit is disconnected is observed through the visual window 9, if not, the control block 7 is rotated, so that the W-shaped rod 6 rotates, the top plate 51 is jacked up, the current-conducting plate 33 is enabled to be far away from the current-conducting plate 2, the limiting block 43 is pulled out of the switch box 1, the position of the rectangular through hole 8 is staggered, the situation that the current-conducting plate 33 moves downwards is avoided, the design of the W-shaped rod 6 can still disconnect the circuit under the effect that the tension spring 32 loses elasticity, the time of maintenance personnel is saved, the service life of the isolating switch is prolonged, and the W-shaped rod 6 can also replace the effect of the protection structure 5 under the situation that the protection structure 5 loses effect.

The utility model provides a working principle of circuit breaker isolator's improvement structure as follows:

when a circuit needs to be disconnected, the circuit breaker disconnects current, the control key 4 is rotated, the limiting block 43 on the control key 4 is located below the rectangular through hole 8, the insulating plate 31 is driven to lose support, the conductive plate 33 is driven to be far away from the conductive plate 2 under the elastic force action of retraction of the tension spring 32, connection of the conductive plates 2 on two sides is disconnected, the limiting block 43 is ejected out of the switch box 1 from the rectangular through hole 8, the top plate 51 moves upwards under the action of the top spring 52, when the limiting rod 54 is located at the limiting hole 56, the limiting rod slides into the limiting hole 56 under the elastic force action of the pressure spring 55, the situation that the conductive plate 33 moves downwards due to the loss of action of the tension spring 32 can be avoided, and safety of the isolating switch is improved; when the circuit is disconnected, whether the protection structure 5 plays a role through the limiting hole 56, if not, whether the circuit is disconnected is observed through the visual window 9, if not, the control block 7 is rotated, so that the W-shaped rod 6 rotates, the top plate 51 is jacked up, the current-conducting plate 33 is enabled to be far away from the current-conducting plate 2, the limiting block 43 is pulled out of the switch box 1, the position of the rectangular through hole 8 is staggered, the situation that the current-conducting plate 33 moves downwards is avoided, the design of the W-shaped rod 6 can still disconnect the circuit under the effect that the tension spring 32 loses elasticity, the time of maintenance personnel is saved, the service life of the isolating switch is prolonged, and the W-shaped rod 6 can also replace the effect of the protection structure 5 under the situation that the protection structure 5 loses effect.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. An improved structure of a circuit breaker disconnecting switch is characterized by comprising:

the switch box comprises a switch box (1), wherein a plurality of power-on plates (2) which are distributed at equal intervals are respectively installed on the side walls of two sides of the switch box (1);

the conductive structure (3) is installed on the switch box (1), the conductive structure (3) comprises an insulating plate (31), a tension spring (32) and conductive plates (33), the upper surface of the insulating plate (31) is elastically connected with the inner top wall of the switch box (1) through the tension spring (32), and the lower surface of the insulating plate (31) is fixedly provided with a plurality of uniformly distributed conductive plates (33);

the control key (4), the said control key (4) is installed on switch box (1), is used for controlling the connectivity of conducting structure (3) and energizing plate (2);

a protective structure (5) for preventing malfunction of the tension spring (32) in the conductive structure (3), the protective structure (5) being mounted on the switch box (1).

2. The improved structure of the circuit breaker isolating switch according to claim 1, characterized in that the control key (4) is composed of a knob (41), a pressing rod (42) and a limiting block (43), the knob (41) is fixedly installed on the pressing rod (42), the pressing rod (42) is inserted into the switch box (1), and the two symmetrically distributed limiting blocks (43) are fixedly installed on the outer side wall of the insertion end of the pressing rod (42).

3. The improved structure of the disconnector of circuit breaker according to claim 1, wherein the protection structure (5) comprises a top plate (51), a top spring (52), a slide way (53), a limiting rod (54), a pressure spring (55) and a limiting hole (56), the bottom of the top plate (51) is elastically connected with the inner bottom wall of the switch box (1) through the top spring (52), the slide way (53) is respectively arranged at two ends of the top plate (51), the limiting rod (54) is inserted in the slide way (53) and is slidably connected with the slide way (53), the limiting rod (54) is elastically connected with the inner side wall of the slide way (53) through the pressure spring (55), and the limiting hole (56) is arranged on two opposite side walls of the switch box (1).

4. The improved structure of the breaker disconnecting switch according to claim 1, wherein a W-shaped rod (6) is installed in the switch box (1), one end of the W-shaped rod (6) is rotatably connected with the inner side wall of the switch box (1), and the other end of the W-shaped rod (6) passes through the side wall of the switch box (1) and is fixedly installed with a control block (7).

5. The improved structure of the disconnector of circuit breaker according to claim 1, wherein the top of the switch box (1) is provided with two rectangular through holes (8) which are symmetrically distributed, and the inner diameter of each rectangular through hole (8) is equal to the outer diameter of each limiting block (43).

6. The improved structure of a disconnector according to claim 1, characterized in that the top of the box (1) is provided with a visualization window (9).