CN221200831U

CN221200831U - Protective detachable lightning arrester

Info

Publication number: CN221200831U
Application number: CN202323109814.2U
Authority: CN
Inventors: 刘永刚; 朱坤鹏
Original assignee: SHANGHAI GOODRUN ELECTRIC POWER TECHNOLOGY CO LTD
Current assignee: SHANGHAI GOODRUN ELECTRIC POWER TECHNOLOGY CO LTD
Priority date: 2023-11-16
Filing date: 2023-11-16
Publication date: 2024-06-21
Anticipated expiration: 2033-11-16

Abstract

The utility model provides a protective detachable lightning arrester, which comprises a base and a lightning arrester body. The base comprises a mounting plate, a supporting seat and a post insulator, wherein one ends of the supporting seat and the post insulator are respectively fixed at two ends of the mounting plate, a hook frame is fixed at the other end of the supporting seat, and an elastic contact is arranged at the other end of the post insulator. The lightning arrester body comprises a lightning arrester core body, one end of the lightning arrester core body is fixedly provided with a rotating bracket, the rotating bracket is rotationally connected with a hook frame, the other end of the lightning arrester core body is relatively provided with an electrified contact and a pull ring, the pull ring is rotationally arranged on the lightning arrester core body, a lock catch is arranged at the position, close to the lightning arrester core body, of the pull ring, the lock catch is provided with a first state and a second state, the electrified contact is meshed with the elastic contact in the first state, the lock catch is in a locking state, the electrified contact is separated from the elastic contact in the second state, the lock catch is in a release state, and the high-voltage side access end has no metal bare dew point, so that full protection is achieved.

Description

Protective detachable lightning arrester

Technical Field

The utility model relates to the technical field of power equipment, in particular to a protective detachable lightning arrester.

Background

Lightning arresters are important devices of substations for protecting equipment from lightning shock waves, typically connected between live conductors and ground, in parallel with the protected equipment. When the overvoltage value reaches the specified action voltage, the lightning arrester immediately acts, charges flow, the overvoltage amplitude is limited, and the equipment insulation is protected; after the voltage value is normal, the lightning arrester is quickly restored to the original state again, so that the normal power supply of the system is ensured.

The prior Chinese patent with publication number CN210896805U discloses a multi-chamber gap lightning arrester structure with an external air gap, which comprises a ball head hanging ring, a multi-chamber assembly, a connecting insulator assembly, an insulating wire and a puncture wire clamp; the multi-chamber assembly is respectively and fixedly connected with the ball head hanging ring and the connecting insulator assembly, the connecting insulator assembly is connected with the puncture wire clamp through an insulated wire, and when the multi-chamber assembly is installed and used, the ball head hanging ring is fixed on the tower cross arm; when the puncture clamp is clamped on the distribution line, the insulated wire is connected with the distribution line in an equipotential manner.

The arrester among the prior art is direct to be installed on the shaft tower cross arm, in case break down or ageing after having a power failure of need, maintenance personal overhead operation changes, increases working strength and occupational risk, increases cost of maintenance.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to provide a protective detachable lightning arrester.

The utility model provides a protective detachable lightning arrester, which comprises a base and a lightning arrester body. The base comprises a mounting plate, a supporting seat and a post insulator, wherein one ends of the supporting seat and the post insulator are respectively fixed at two ends of the mounting plate, a hook frame is fixed at the other end of the supporting seat, and an elastic contact is arranged at the other end of the post insulator. The lightning arrester body comprises a lightning arrester core body, one end of the lightning arrester core body is fixedly provided with a rotating support, the rotating support is connected with a hook frame in a rotating mode, the other end of the lightning arrester core body is relatively provided with an electrified contact and a pull ring, the pull ring is rotatably arranged on the lightning arrester core body, a lock catch is arranged at the position, close to the lightning arrester core body, of the pull ring and is provided with a first state and a second state, in the first state, the electrified contact is meshed with an elastic contact, the lock catch is in a locking state, in the second state, the electrified contact is separated from the elastic contact, and the lock catch is in a tripping state.

Preferably, in the first state, the latch is fastened to the wire inlet side of the post insulator.

Preferably, the line access end of the lightning arrester comprises a quick-plug insulation plug, and the line inlet side of the post insulator is plugged with the quick-plug insulation plug.

Preferably, the elastic contact is electrically connected with the quick-plug insulation plug.

Preferably, the lightning arrester core body is externally coated with an outer insulation protection layer, and the electrified contact is electrically connected with the lightning arrester core body through an electric conductor coated in the outer insulation protection layer.

Preferably, the rotating bracket is electrically connected with the lightning arrester core.

Preferably, a grounding wire is arranged at one end of the supporting seat fixed with the hook frame, the mounting plate is grounded, and the grounding wire is electrically connected with the mounting plate.

Preferably, the hook frame, the pull ring and the lock catch are all coated with the insulating layer.

Preferably, a socket is formed at one end of the post insulator provided with the elastic contact, and the elastic contact is arranged in the socket.

Preferably, a rotating shaft is arranged on the rotating bracket, and the hook frame is hinged with the rotating shaft.

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the utility model, the rotary support is rotatably connected with the hook frame, and the semi-open rotary support structure is adopted, so that the opening state and the closing state of the lightning arrester body can be changed under the action of external force, the opening and closing operation is conveniently realized, the live overhaul and the replacement of the lightning arrester are facilitated, the smoothness of a circuit is facilitated, and the working intensity of power maintainers is greatly reduced;

2. According to the utility model, the lock catch is arranged on the pull ring, a certain rotation margin is provided for pulling, and the lock catch can be driven to do a certain swinging angle when the pull ring is pulled, so that the locking or releasing state can be realized;

3. According to the utility model, the quick-plug type full-insulation protection plug is arranged as the high-voltage line access end, and the hook frame, the pull ring and the lock catch are coated with the insulation layer, so that no metal is exposed on the surface, and the full-closed working environment is realized.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

Fig. 1 is a schematic view of the utility model mainly showing the arrester in a latched state and a tripped state.

In the figure:

Pull ring 32 of mounting plate 11

Spring contact 33 of post insulator 12

Outer insulation layer 34 of support base 13

Hook 14 arrester core 35

Rotary bracket 36 of quick-plug insulating plug 21

Lock catch 31

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

As shown in fig. 1, the protective detachable lightning arrester provided by the utility model comprises a base and a lightning arrester body. The base includes mounting panel 11, supporting seat 13 and pillar insulator 12, and the one end of supporting seat 13 and pillar insulator 12 is fixed respectively at the both ends of mounting panel 11, is fixed with hook 14 on the other end of supporting seat 13, is provided with elastic contact 33 on the other end of pillar insulator 12. The arrester body includes arrester core 35, and the one end of arrester core 35 is fixed with runing rest 36, and runing rest 36 rotates with hook 14 to be connected, and the other end of arrester core 35 is provided with electrified contact and pull ring 32 relatively, and pull ring 32 rotationally sets up on arrester core 35, and pull ring 32 is close to arrester core 35 department and is provided with hasp 31, and hasp 31 has first state and second state, in first state electrified contact and elastic contact 33 meshing, hasp 31 are in the locking state, and electrified contact and elastic contact 33 separation in the second state, hasp 31 are in the tripping state.

The utility model adopts a semi-open type rotary support structure, the rotary bracket 36 is matched with the hook frame 14, the lightning arrester body can freely rotate under the action of external force, and the lightning arrester body can be taken down by the rotary bracket 36 or is rotationally connected with the hook frame 14 by using an operating rod (also called a collar rod). The rotary bracket 36 is connected with the hook frame 14, and in the locking state of the lock catch 31, the electrified contact of the lightning arrester body is completely meshed with the elastic contact 33 of the post insulator 12 and is in a closing state; in the disengaged state of the shackle 31, the live contact of the arrester body is separated from the elastic contact 33 of the post insulator 12, and is in the open state. According to the utility model, the lightning arrester body can be directly taken and placed through the collar rod, the opening and closing operation is conveniently realized, the live overhaul and the replacement of the lightning arrester are realized, the smoothness of a circuit is ensured, the working intensity of power maintenance personnel is greatly reduced, and the environmental applicability is stronger.

In a possible embodiment, in the first state, the latch 31 is fastened to the line-in side of the post insulator 12, the live contact of the lightning arrester body is completely engaged with the elastic contact 33 of the post insulator 12, and the lightning arrester is in the closed state. In the second state, the lock catch 31 is tripped from the wire inlet side of the post insulator 12, the live contact of the lightning arrester body is separated from the elastic contact 33 of the post insulator 12, and the lightning arrester is in a switching-off state.

Specifically, the line access end of the lightning arrester includes a quick-plug insulating plug 21, the line-incoming side of the post insulator 12 is plugged into the quick-plug insulating plug 21, and the elastic contact 33 of the post insulator 12 is electrically connected to the quick-plug insulating plug 21. The quick-plug insulation plug 21 is a quick-plug full-insulation anti-loose plug (see patent 201820190379.0 about the quick-plug insulation plug 21) which is used as an access end when a lightning arrester is accessed to a line, the incoming line side of the post insulator 12 adopts a special plug-in structure, can be connected with a closed insulation plug in a full-closed mode and is fixed by adopting a reverse wire structure, insulating layers are coated outside the hook frame 14, the pull ring 32 and the lock catch 31, the hook frame 14, the pull ring 32 and the lock catch 31 are cast by adopting insulating materials, no metal is exposed on the surface, and a full-closed working environment is achieved.

Specifically, the outer insulation protection layer 34 is coated on the outer side of the lightning arrester core 35, and the live contact is electrically connected with the lightning arrester core 35 through an electric conductor coated in the outer insulation protection layer 34. The lightning arrester core 35 is coated with a composite insulating material and cured to form, so that the external insulation electrical strength and the outdoor protection performance are met. The lightning arrester core 35 and the high-voltage contacts are coated by anti-aging composite insulating materials, the pull ring 32 and the lock catch 31 are made of outdoor ultraviolet-proof insulating materials, and the high-voltage wire access end is made of a quick-plug type all-insulation protection plug, so that the metal bare dew point of the high-voltage wire access end is avoided, the full protection is realized, the problem that charged bodies are exposed in the atmosphere is solved, and the problems of foreign matter lap joint, short circuit grounding and corrosion caused by coastal severe environments caused by ice and snow, rainwater, strong wind, beasts and the like can be effectively prevented.

Specifically, the lower end of the post insulator 12 is fixed on the mounting plate 11 through a bolt, a socket is arranged at one end of the post insulator 12 provided with an elastic contact 33, the elastic contact 33 is arranged in the socket, and the elastic contact 33 arranged in the socket at the upper end of the post insulator 12 is meshed with the live contact of the lightning arrester body to conduct electricity, and is communicated with the quick-plug insulation connector through an electric conductor. The lower extreme of supporting seat 13 passes through the bolt fastening on mounting panel 11, and the supporting seat 13 upper end fixedly connected with coupler rack 14 and earth connection are provided with the earth connection on the one end of supporting seat 13 that is fixed with coupler rack 14, and the earth connection is connected with mounting panel 11 electricity, and mounting panel 11 ground connection switches on with mounting panel 11, is equipped with ground hole or ground bolt on the mounting panel 11. The lower extreme of arrester core 35 is fixed with runing rest 36, and runing rest 36 is connected with arrester core 35 electricity, switches on with arrester core 35 earthing terminal, is provided with the swivel axis on the runing rest 36, and hook frame 14 articulates the swivel axis, and the electrified contact of arrester core 35 upper end switches on with arrester core 35 through the electric conductor cladding in composite insulation material, and the pull ring 32 of concreting in arrester core 35 upper end has certain gyration margin, can drive hasp 31 and do certain swing angle.

Principle of operation

The rotating bracket 36 at the lower end of the lightning arrester core 35 is matched with the shaft nest of the hook frame 14, and can rotate freely under the action of external force. The lightning conductor core 35 can be removed by means of a swivel bracket 36 or placed in the hinge socket of the hook 14 using an operating lever (also called a collar rod).

Before use, the lightning arrester base is pre-installed on a line tower bracket and is connected to a line through a quick-plug type all-insulation anti-loose plug.

When in use, the front end of the collar rod is inserted into the annular hole of the rotary bracket 36, the rotary shaft of the rotary bracket 36 is placed into the shaft nest of the hook frame 14, the collar rod is used for supporting the pull ring 32, the shaft nest of the hook frame 14 or the rotary shaft of the rotary bracket 36 is used as the rotation center, the lightning arrester body is lifted upwards, the electrified contact of the lightning arrester body is fully meshed with the elastic contact 33 of the post insulator 12, and the lock catch 31 is locked.

When the brake is separated, the pull ring 32 is pulled by the collar rod, the pull ring 32 firstly pulls the lock catch 31 to release, the lightning arrester body takes the rotating shaft of the rotating bracket 36 as the rotating center and is dragged along with the collar rod, and the electrified contact of the lightning arrester body is separated from the elastic contact 33 of the post insulator 12, so that the brake separation is realized.

If the lightning arrester body needs to be replaced, the lightning arrester body can be directly taken and put through the collar rod.

The utility model adopts the semi-open rotary supporting structure, and the lightning arrester body is directly taken and placed through the collar rod, thereby being convenient for realizing the opening and closing operation, being capable of realizing the electrified overhaul and the replacement of the lightning arrester, ensuring the smoothness of a circuit, greatly reducing the working intensity of power maintenance personnel and having stronger environmental applicability. When in closing, the lightning arrester can realize locking, and misoperation in the running process is prevented.

In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the utility model and the features of the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. A protective, removable arrester, comprising:

The base comprises a mounting plate (11), a supporting seat (13) and a pillar insulator (12), wherein one ends of the supporting seat (13) and the pillar insulator (12) are respectively fixed at two ends of the mounting plate (11), a hook frame (14) is fixed at the other end of the supporting seat (13), and an elastic contact (33) is arranged at the other end of the pillar insulator (12);

The lightning arrester body, the lightning arrester body includes lightning arrester core (35), the one end of lightning arrester core (35) is fixed with runing rest (36), runing rest (36) are connected with hook frame (14) rotation, the other end of lightning arrester core (35) is provided with electrified contact and pull ring (32) relatively, pull ring (32) rotationally set up on lightning arrester core (35), pull ring (32) are close to lightning arrester core (35) department and are provided with hasp (31), hasp (31) have first state and second state, in the first state, electrified contact and elastic contact (33) meshing, hasp (31) are in the blocking state, in the second state, electrified contact and elastic contact (31) separation, hasp (31) are in the tripping state.

2. The protective detachable arrester according to claim 1, characterized in that in the first state the catch (31) is fastened to the incoming side of the post insulator (12).

3. The protective detachable lightning arrester according to claim 2, characterized in that the line access end of the lightning arrester comprises a quick-plug insulation plug (21), and the line-in side of the post insulator (12) is plugged into the quick-plug insulation plug (21).

4. A protective detachable arrester according to claim 3, characterized in that the spring contact (33) is electrically connected to the quick-connect insulating plug (21).

5. A protective detachable arrester according to claim 1, characterized in that the arrester core (35) is covered with an outer insulation shield (34), the live contact being electrically connected to the arrester core (35) by an electrical conductor covered in the outer insulation shield (34).

6. A protective detachable arrester according to claim 1, characterized in that the swivel bracket (36) is electrically connected to the arrester core (35).

7. The protective detachable lightning arrester according to claim 1, characterized in that a grounding wire is provided on one end of the supporting seat (13) to which the hook frame (14) is fixed, the mounting plate (11) is grounded, and the grounding wire is electrically connected with the mounting plate (11).

8. The protective detachable lightning arrester according to claim 1, characterized in that the hook (14), the pull ring (32) and the lock catch (31) are all covered with an insulating layer.

9. A protective detachable arrester according to claim 1, characterized in that the post insulator (12) provided with the spring contact (33) is provided with a socket at one end, the spring contact (33) being arranged in the socket.

10. A protective detachable lightning arrester according to claim 1, characterized in that the swivel bracket (36) is provided with a swivel axis, the hook (14) being hinged to the swivel axis.