CN112164537B

CN112164537B - Tripping insulator

Info

Publication number: CN112164537B
Application number: CN202011105048.0A
Authority: CN
Inventors: 徐宣; 蔡延明; 刘锦旭; 陈亦壮; 张仕昌; 黄力; 谭书铭; 陈武栩; 胡庆湘; 刘�文; 朱溪丰; 冯妙忠
Original assignee: Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-10-26
Anticipated expiration: 2040-10-15
Also published as: CN112164537A

Abstract

The invention relates to the technical field of power system operation and maintenance, in particular to a tripping insulator which comprises an insulator body, a tripping device and a unlocking component, wherein the tripping device comprises a first installation part, a second installation part and a connecting part; the unlocking assembly is arranged on the first installation part and can separate the first installation part from the second installation part under the extrusion action of the wire so as to separate the wire from the insulator body. According to the invention, the tripping device is arranged, the wire originally penetrating through the insulator body is arranged in the supporting groove of the tripping device, and when the wind power is too large, the unlocking assembly can separate the first installation part and the second installation part of the tripping device under the extrusion action of the wire, so that the wire is separated from the insulator body, the pole falling or breaking accident caused by the pulling of the wire is avoided, and the time for emergency repair and power restoration is shortened.

Description

Tripping insulator

Technical Field

The invention relates to the technical field of operation and maintenance of power systems, in particular to a tripping insulator.

Background

With the rapid development of electric power technology, users have higher and higher requirements on power supply reliability and emergency repair and rapid power restoration of accidents. Insulators are widely used in overhead power transmission lines because of their sufficient electrical insulation strength and moisture resistance, and are generally installed on the top of electric poles for supporting wires. However, when typhoon arrives at coastal areas temporarily, the electric pole lands and impacts on the front side of the typhoon, and part of the electric pole falls or breaks under the pulling action of the wire, so that great difficulty is caused to the power restoration rush repair, and the repair time is greatly prolonged.

Disclosure of Invention

The invention aims to provide a tripping insulator which automatically trips when an electric pole is impacted by typhoon, so that the accident of pole falling or pole breaking caused by pulling a lead is avoided, and the time of emergency repair and power restoration is shortened.

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

a trip type insulator comprises an insulator body and a trip device, wherein the trip device comprises a first installation part, a second installation part, a connecting part and a trip assembly, the first installation part is connected to the insulator body and clamped with the second installation part to form a supporting groove for supporting a lead;

one end of the connecting part is clamped with the second mounting part, the other end of the connecting part is rotatably connected with the first mounting part, and a limiting part is arranged on the connecting part;

the unlocking assembly comprises:

the tripping limiting stopper is inserted into the limiting part;

one end of the pressure trigger switch can extend into the supporting groove from the side wall of the supporting groove;

the unlocking spring is provided with a first state and a second state, when the unlocking spring is in the first state, the connecting part is clamped with the second mounting part, and the limiting part is inserted with the tripping limiting stopper;

the pressure trigger switch is in sliding fit with the first installation part and can drive the tripping limiting stopper to move to enable the limiting part to be separated from the tripping limiting stopper, and the unlocking spring is switched to the second state from the first state to enable the connecting part to be separated from the second installation part, so that the lead is separated from the insulator body.

Preferably, the unlocking assembly further comprises:

the compression spring is provided with a first compression state and a second compression state, and when the compression spring is in the first compression state, the limiting part is inserted into the tripping limiting device; when the compression spring is in the second compression state, the limiting part is separated from the tripping limiter; the pressure activated switch action is capable of compressing the compression spring to switch the compression spring from the first compressed state to the second compressed state;

the limiting part is connected with the first installation part, the compression spring is arranged on one side, back to the limiting part, of the limiting part, and the limiting part enables the compression spring to be in the first compression state.

Preferably, the unlocking assembly further comprises a tripping component connected with the tripping limiting stopper, the tripping component is arranged between the limiting member and the compression spring, and when the compression spring is in a first compression state, the tripping component abuts against the limiting member;

the pressure trigger switch can push the tripping component to move relative to the first mounting part, so that the tripping component is separated from the limiting part.

Preferably, the unlocking assembly further comprises an adjuster movable relative to the first mounting portion to adjust the amount of compression of the compression spring when in the first compressed state.

Preferably, the adjuster is a bolt, a rod portion of the bolt is in threaded connection with the first mounting portion, and the compression spring is sleeved on the rod portion of the bolt and abuts against a head portion of the bolt.

Preferably, the unlocking assembly further comprises a return spring, and the return spring is clamped between the tripping component and the pressure trigger switch.

Preferably, the pressure trigger switch comprises a cross rod and a vertical rod, the cross rod and the vertical rod are of a T-shaped structure, the reset spring is sleeved on the vertical rod, and two ends of the reset spring are respectively connected to the cross rod and the tripping part.

Preferably, the first state of the unlocking spring is a compressed state, an inserting groove is formed in the tripping limiting stopper, the limiting part is inserted into the tripping limiting stopper, the connecting part comprises two first buckles which are oppositely arranged, two second buckles which are oppositely arranged are arranged on the second mounting part, and the two second buckles are positioned between the two first buckles;

when the unlocking spring is in a first state, the first buckle is clamped with the second buckle; when the unlocking spring is switched from the first state to the second state, the two first buckles move in opposite directions, so that the first buckles are separated from the second buckles.

Preferably, the first state of the unlocking spring is a stretching state, the limiting part is provided with an inserting groove, the limiting part is inserted into the tripping limiter, the connecting part comprises two first buckles which are oppositely arranged, the second mounting part is provided with two second buckles which are oppositely arranged, and the two first buckles are positioned between the two second buckles;

when the unlocking spring is in a first state, the first buckle is clamped with the second buckle; when the unlocking spring is switched from the first state to the second state, the two first buckles move towards opposite directions, so that the first buckles are separated from the second buckles.

Preferably, the first mounting part is inserted into the insulator body.

The invention has the beneficial effects that: according to the invention, the tripping device is arranged, the wire originally penetrating through the insulator body is arranged in the supporting groove of the tripping device, the tripping device comprises the first installation part, the second installation part, the connecting part and the unlocking component, the first installation part and the second installation part are clamped through the connecting part, and the unlocking component can separate the first installation part from the second installation part so as to separate the wire from the tripping device, so that the accidents of pole reversing or pole breaking caused by the pulling of the wire are avoided, and the time of emergency repair and power restoration is shortened.

Drawings

Fig. 1 is a schematic structural diagram of an unlocking assembly according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a trip insulator according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of an unlocking assembly according to a second embodiment of the present invention.

In the figure:

1. an insulator body;

2. a trip device;

21. a first mounting portion;

22. a second mounting portion;

23. an unlocking assembly; 231. tripping a limiter; 232. a pressure trigger switch; 233. an unlocking spring; 234. a limiting member; 235. a compression spring; 236. a trip unit; 237. a regulator; 238. a return spring;

24. a connecting portion; 241. a limiting part.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

The first embodiment is as follows:

as shown in fig. 1-2, the trip type insulator provided by this embodiment includes an insulator body 1 and a trip device 2, where the insulator body 1 is inserted into the trip device 2, where the trip device 2 includes a first installation portion 21, a second installation portion 22, a connection portion 24 and a unlocking component 23, the first installation portion 21 is connected to the insulator body 1, and is clamped with the second installation portion 22 to form a support slot for supporting a wire; one end of the connecting part 24 is clamped with the second mounting part 22, the other end is rotatably connected with the first mounting part 21, and a limiting part 241 is arranged; the unlocking assembly 23 comprises a tripping limiter 231, a pressure trigger switch 232 and an unlocking spring 233, wherein the tripping limiter 231 is inserted into the limiting part 241; one end of the pressure trigger switch 232 can extend into the supporting groove from the side wall of the supporting groove; the unlocking spring 233 has a first state and a second state, when the unlocking spring 233 is in the first state, the connecting part 24 is clamped with the second mounting part 22, and the limiting part 241 is inserted with the tripping limiter 231; the pressure trigger switch 232 is in sliding fit with the first mounting portion 21, and can drive the trip stopper 231 to move so as to separate the limiting portion 241 from the trip stopper 231, and switch the unlocking spring 233 from the first state to the second state, so as to separate the connecting portion 24 from the second mounting portion 22, and separate the first mounting portion 21 from the second mounting portion 22.

According to the invention, the tripping device 2 is arranged, the lead originally penetrating through the insulator body 1 is arranged in the supporting groove of the tripping device 2, the lead swings in the supporting groove under the action of wind force to apply pressure to the pressure trigger switch 232, the pressure trigger switch 232 drives the tripping limiter 231 to act to separate the limiting part 241 from the tripping limiter 231, the unlocking spring 233 is switched from the first state to the second state, the connecting part 24 is separated from the second mounting part 22, so that the lead is separated from the tripping device 2, the pole collapse or pole breakage accident caused by the pulling of the lead is avoided, and the time for emergency repair and power restoration is shortened.

Further, the unlocking assembly 23 further includes a limiting member 234 and a compression spring 235, wherein the compression spring 235 has a first compression state and a second compression state, and when the compression spring 235 is in the first compression state, the limiting member 241 is inserted into the trip limiting stopper 231; when the compression spring 235 is in the second compression state, the limiting part 241 is separated from the trip limiter 231; the pressure trigger switch 232 action can compress the compression spring 235 to switch the compression spring 235 from a first compression state to a second compression state; the limiting member 234 is connected to the first mounting portion 21, the compression spring 235 is disposed on a side of the limiting member 234 opposite to the limiting portion 241, and the limiting member 234 makes the compression spring 235 in a first compression state.

Further, the unlocking assembly 23 further includes a tripping member 236 connected to the tripping limiter 231, the tripping member 236 is disposed between the limiting member 234 and the compression spring 235, and the compression spring 235 can enable the tripping member 236 to abut against the limiting member 234; the pressure trigger switch 232 can push the trip unit 236 to move relative to the first mounting portion 21, so that the trip unit 236 is separated from the limiting member 234, and the trip limiter 231 is separated from the limiting portion 241. Specifically, the trip member 236 abuts the compression spring 235, and in other embodiments, the trip member 236 may be connected to the compression spring 235.

Further, the unlocking assembly 23 further includes an adjuster 237, the adjuster 237 being movable relative to the first mounting portion 21 to adjust the amount of compression of the compression spring 235 when in the first compressed state. The compression amount of the compression spring 235 in the first compression state is adjusted through the adjuster 237, the acting force of the compression spring 235 to the tripping component 236 changes along with the change of the acting force, when the horizontal resolving force of the pressure trigger switch 232 to the acting force of the tripping component 236 is greater than the acting force of the compression spring 235 to the tripping component 236, the tripping component 236 drives the tripping limiter 231 to move towards the compression direction of the compression spring 235, so that the limiting part 241 is separated from the tripping limiter 231, the lead falls off and is separated from the insulator body 1, and the situation that the lead still falls off when wind power is insufficient is avoided.

Specifically, the adjuster 237 is a bolt, a rod portion of the bolt is in threaded connection with the first mounting portion 21, and the compression spring 235 is sleeved on the rod portion of the bolt. By screwing the bolt, the compression amount of the compression spring 235 in the first compression state is adjusted, and the acting force of the compression spring 235 on the trip unit 236 is changed, so that the acting force of the pressure trigger switch 232 which can be borne by the trip unit 236 is changed, and the larger the compression amount of the compression spring 235 is, the larger the acting force of the pressure trigger switch 232 which can be borne by the trip unit 236 is, that is, the larger the wind force which can be borne by the trip device 2 is.

Further, the unlocking assembly 23 further includes a return spring 238, and the return spring 238 is interposed between the trip unit 236 and the pressure trigger switch 232, so that one end of the pressure trigger switch 232 can extend into the supporting groove from the side wall of the supporting groove. When the pressure trigger switch 232 applies force to the trip unit 236, it presses the return spring 238, and if the force is not enough to make the trip unit 236 push the compression spring 235 to continue to compress, which indicates that the wind force is not enough, the pressure trigger switch 232 will return to the original state under the action of the return spring 238.

Further, the pressure trigger switch 232 includes a cross bar and a vertical bar, the cross bar and the vertical bar are in a T-shaped structure, the vertical bar is sleeved with a return spring 238, and two ends of the return spring 238 are respectively connected to the cross bar and the trip unit 236. The vertical post of the pressure activated switch 232 provides a guide for the return spring 238, ensuring that the return spring 238 compresses along the axis of the vertical post. Preferably, the surface of the trip unit 236 facing the return spring 238 is wedge-shaped, so that the vertical rod of the pressure trigger switch 232 is perpendicular to the wedge-shaped surface, ensuring that the force of the pressure trigger switch 232 is better transmitted to the trip unit 236.

Further, the first state of the unlocking spring 233 is a compressed state, an insertion groove is formed in the trip limiter 231, the limiting portion 241 is inserted into the trip limiter 231, the connecting portion 24 includes two first buckles which are oppositely arranged, two second buckles which are oppositely arranged are arranged on the second mounting portion 22, and the two second buckles are located between the two first buckles; when the unlocking spring 233 is in the first state, the first buckle is clamped with the second buckle; when the unlocking spring 233 is switched from the first state to the second state, the two first latches move in opposite directions, so that the first latches are separated from the second latches.

Further, as shown in fig. 3, a second groove is formed in the bottom surface of the trip device 2, and the insulator body 1 is inserted into the second groove, so that the insulator body 1 and the trip device 2 are connected more tightly.

The working process is as follows: by screwing the adjuster 237, the compression amount of the compression spring 235 is adjusted, the maximum wind power which can be borne by the tripping device 2 is set, and when the wind blows, under the action of the wind power, swings in the supporting groove formed by the first mounting part 21 and the second mounting part 22, and applies force to the pressure trigger switch 232 positioned at the side wall of the supporting groove, when the force to which the pressure trigger switch 232 is subjected is greater than the maximum wind force that the trip device 2 can withstand, the pressure trigger switch 232 pushes the trip unit 236 to further compress the compression spring 235, the trip unit 236 drives the trip stopper 231 to move toward the compression direction of the compression spring 235, the trip stopper 231 is separated from the limiting portion 241, under the action of the elastic force of the unlocking spring 233, the two first buckles on the connecting portion 24 move in the opposite directions, so that the first buckles are separated from the second buckles, and the wires in the supporting grooves naturally fall off.

Example two:

the present embodiment provides a tripping insulator, where the unlocking assembly 23 of the tripping insulator is substantially the same as the first embodiment, except that, as shown in fig. 3, the first state of the unlocking spring 233 is a stretching state, the limiting portion 241 forms an insertion groove, the limiting portion 241 is inserted into the tripping limiter 231, the tripping limiter 231 is used to limit the limiting portion 241 to move in an opposite direction, and when the compression spring 235 is in the first compression state, the limiting portion 241 is inserted into the tripping limiter 231; when the compression spring 235 is in the second compressed state, the stopper portion 241 is separated from the trip stopper 231. Correspondingly, the connecting portion 24 of the trip device 2 is also different, the connecting portion 24 includes two first buckles arranged oppositely, the second mounting portion 22 is provided with two second buckles arranged oppositely, and the two first buckles are located between the two second buckles; when the unlocking spring 233 is in the first state, the trip stopper 231 is disposed between the two limiting portions 241, and the first buckle is clamped to the second buckle; when the unlocking spring 233 is switched from the first state to the second state, the trip stopper 231 is pulled out, the trip stopper 231 does not provide the force for the limiting portion 241 to balance the pulling force of the unlocking spring 233 any more, and the first buckle moves in the opposite direction under the pulling force of the unlocking spring 233, so that the first buckle is separated from the second buckle.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A trip type insulator comprises an insulator body (1) and is characterized by further comprising a trip device (2), wherein the trip device (2) comprises a first installation part (21), a second installation part (22), a connecting part (24) and a unlocking part (23), the first installation part (21) is connected to the insulator body (1) and can be clamped with the second installation part (22) to form a supporting groove for supporting a lead;

one end of the connecting part (24) can be clamped with the second mounting part (22), the other end of the connecting part is rotatably connected with the first mounting part (21), and a limiting part (241) is arranged on the connecting part (24);

the unlocking assembly (23) comprises:

the tripping limiting device (231), the tripping limiting device (231) can be plugged with the limiting part (241);

a pressure trigger switch (232), wherein one end of the pressure trigger switch (232) can extend into the supporting groove from the side wall of the supporting groove;

the unlocking spring (233) is provided with a first state and a second state, when the unlocking spring (233) is in the first state, the connecting part (24) is clamped with the second mounting part (22), and the limiting part (241) is inserted into the tripping limiter (231);

pressure trigger switch (232) with first installation department (21) sliding fit can drive trip stopper (231) action makes spacing portion (241) with trip stopper (231) separation, and make unblock spring (233) by first state switches over to the second state, makes connecting portion (24) with second installation department (22) separation, with will first installation department (21) with second installation department (22) separation.

2. The release insulator according to claim 1, wherein the unlocking assembly (23) further comprises:

the compression spring (235) has a first compression state and a second compression state, and when the compression spring (235) is in the first compression state, the limiting part (241) is inserted into the tripping limiting stopper (231); when the compression spring (235) is in the second compression state, the limiting part (241) is separated from the tripping limiter (231); the pressure trigger switch (232) action is capable of compressing the compression spring (235) to switch the compression spring (235) from the first compressed state to the second compressed state;

the limiting part (234), the limiting part (234) with first installation department (21) is connected, compression spring (235) are located limiting part (234) one side of keeping away from limiting part (241), limiting part (234) make compression spring (235) be in first compression state.

3. The trip insulator according to claim 2, wherein said unlocking assembly (23) further comprises a trip member (236) connected to said trip limiter (231), said trip member (236) being disposed between said limiter (234) and said compression spring (235), said trip member (236) abutting said limiter (234) when said compression spring (235) is in a first compressed state;

the pressure trigger switch (232) can push the tripping component (236) to move relative to the first mounting part (21) so as to separate the tripping component (236) from the limiting part (234).

4. A release insulator according to claim 2, characterised in that the unlocking assembly (23) further comprises an adjuster (237), the adjuster (237) being movable relative to the first mounting portion (21) to adjust the amount of compression of the compression spring (235) when in the first compressed state.

5. The release insulator according to claim 4, wherein the adjuster (237) is a bolt, a shaft of the bolt is in threaded connection with the first mounting portion (21), and the compression spring (235) is sleeved on the shaft of the bolt and abuts against a head of the bolt.

6. A trip insulator according to claim 3 characterised in that said unlocking assembly (23) further comprises a return spring (238), said return spring (238) being interposed between said trip member (236) and said pressure trigger switch (232).

7. The trip type insulator according to claim 6, wherein the pressure trigger switch (232) comprises a cross bar and a vertical bar, the cross bar and the vertical bar are in T-shaped structures, the return spring (238) is sleeved on the vertical bar, and two ends of the return spring (238) are respectively connected to the cross bar and the trip part (236).

8. The trip type insulator according to claim 2, wherein the first state of the unlocking spring (233) is a compressed state, an insertion groove is formed in the trip limiting stopper (231), the limiting portion (241) is inserted into the trip limiting stopper (231), the connecting portion (24) comprises two first buckles which are oppositely arranged, two second buckles which are oppositely arranged are arranged on the second mounting portion (22), and the two second buckles are positioned between the two first buckles;

when the unlocking spring (233) is in a first state, the first buckle is clamped with the second buckle; when the unlocking spring (233) is switched from the first state to the second state, the two first buckles move in opposite directions, so that the first buckles are separated from the second buckles.

9. The trip type insulator according to claim 2, wherein the first state of the unlocking spring (233) is a tension state, the limiting portion (241) is formed with an insertion groove, the limiting portion (241) is inserted with the trip limiting stopper (231), the connecting portion (24) comprises two first buckles which are oppositely arranged, the second mounting portion (22) is provided with two second buckles which are oppositely arranged, and the two first buckles are positioned between the two second buckles;

10. A release insulator according to any one of claims 1 to 9, characterised in that the first mounting portion (21) is plugged into the insulator body (1).