Isolation type thunder and lightning suppression device

Abstract

The invention relates to the field of lightning suppression devices, in particular to an isolated lightning suppression device which comprises an insulator, a lightning protection device with a built-in fuse tube is arranged at the side end of the insulator, and a rainproof cover and a rotating frame are connected between the upper end and the lower end of the lightning protection device and the insulator respectively. The rotating frame comprises a shell connected with the bottom end of the insulator, a rotating shaft is rotationally connected to the shell, an auxiliary hook and an auxiliary plate are connected to the upper end and the side end of the rotating shaft respectively, a limiting hoop is connected between the auxiliary hook and the bottom end of the lightning protection device, and an anti-explosion connector is installed on the auxiliary plate; the explosion-proof connector comprises a fusing column, the upper end and the lower end of the fusing column are connected with a binding post and a heat conduction column respectively, and the lower end of the insulator is connected with a magnetic ring lightning protection structure through a movable arm. Thunder and lightning can be conveniently suppressed through the magnetic ring, and the explosion-proof connector can be disconnected in a non-destructive manner under the condition of low-intensity thunder and lightning, so that frequent replacement of the explosion-proof connector is avoided.

Description

Technical Field

[0001] The present invention relates to an isolated lightning suppression device, in particular to an isolated lightning suppression device applied in the field of lightning suppression devices. Background Art

[0002] Modern lightning suppression devices have been developed into two types: active and passive. Passive devices, such as lightning rods and lightning strips, mainly guide lightning currents by providing a low-impedance path. Active devices, such as drop-out circuit breakers, protect circuits by actively breaking circuits and isolating lightning waves through breaking circuits and insulating parts.

[0003] The main application areas of these devices include military facilities, airports, high-rise buildings, power transmission systems, and inflammable and explosive places. They ensure the safety of personnel and stable operation of equipment by reducing the direct impact of lightning on critical infrastructure.

[0004] In order to solve the problem of single lightning suppression means in lightning suppression devices, a certain lightning suppression device on the market adopts a design that combines a magnetic ring with a circuit breaker, and has a certain market share.

[0005] Chinese invention patent CN115376766B discloses a magnetic ring insulator for suppressing the propagation of lightning waves on a transmission line, including a fixing assembly, the fixing assembly includes an arc-shaped clamping member, a fixing member and a connecting member, the arc-shaped clamping member is connected to the fixing member, and the fixing member is connected to the connecting member; an insulating assembly, the insulating assembly includes an insulator, a clamp and a magnetic ring, the clamp is connected to the magnetic ring, the insulator cooperates with the arc-shaped clamping member, and the clamp is connected to the connecting member. This device can suppress the propagation of lightning waves on the transmission line in thunderstorms through the coordinated use of insulators and magnetic rings, so that the secondary equipment on the transmission line is protected from the harm of lightning overvoltage intrusion and the problem of frequent line tripping.

[0006] In the prior art, lightning suppression devices have a single means of suppressing lightning, which is not easy to effectively deal with lightning conditions of different intensities and durations. In addition, in devices with a single means of suppressing lightning, the triggering threshold of the circuit breaker is low, which easily leads to frequent maintenance and replacement of the fuse structure therein, which is very troublesome and wastes resources. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the lightning suppression device in the prior art has a single means of suppressing lightning, which is not easy to effectively deal with lightning conditions of different intensities and durations, and in the device with a single means of suppressing lightning, the triggering threshold of the circuit breaker is low, which easily leads to frequent maintenance and replacement of the fuse structure therein, which is very troublesome and wastes resources.

[0008] In order to solve the above problems, the present invention provides an isolated lightning suppression device, including an insulator, a lightning arrester is arranged at the side end of the insulator, a fuse tube 21 is arranged in the lightning arrester 2, and a rainproof cover and a rotating frame are respectively connected between the upper and lower ends of the lightning arrester and the insulator; the rotating frame includes a shell connected to the bottom end of the insulator, a rotating shaft is rotatably connected to the shell, an auxiliary hook and an auxiliary plate are respectively connected to the upper end and the side end of the rotating shaft, a limiting hoop is connected between the auxiliary hook and the bottom end of the lightning arrester, and an explosion-proof connector is installed on the auxiliary plate;

[0009] The explosion-proof connector includes a fuse column, the upper and lower ends of which are respectively connected to a terminal post and a heat-conducting column, the top of which is plugged with a docking socket for docking with a lightning arrester, and the bottom of the docking socket is supported by the fuse column, a conductive wire is connected to the heat-conducting column, and the lower end of the insulator is connected to a magnetic ring lightning protection structure through a movable arm;

[0010] The magnetic ring lightning protection structure includes a mounting frame, a plurality of buckles are installed on the mounting frame, a magnetic ring body is clamped in the buckles, a heat-conducting connection block is installed on the top of the mounting frame, and a heat-conducting sheet connected to the heat-conducting connection block is laid on the inner wall of the mounting frame;

[0011] An adjusting frame is connected between the insulator and the rotating frame, and the adjusting frame includes a main frame plate, an insulating cylinder is installed on the main frame plate, a movable cylinder connected to the rotating frame is inserted at the lower end of the insulating cylinder, a heat-conducting pipe is connected between the bottom end of the movable cylinder and the heat-conducting connecting block, the heat-conducting pipe extends into the insulating cylinder, and the insulating cylinder is filled with thermal expansion liquid, and a piston ring is installed at one end of the movable cylinder located in the main frame plate.

[0012] In the above-mentioned lightning suppression device based on isolation technology, lightning suppression can be achieved conveniently through the magnetic ring, and in the case of low-intensity lightning, the explosion-proof connector can be disconnected non-destructively to avoid frequent replacement of the explosion-proof connector.

[0013] As a further improvement of the present application, a sliding frame is installed at one end of the rotating frame close to the insulator, a limiting guide rail matching the sliding frame is installed at the bottom end of the main frame plate, and a bracket is installed at the bottom end of the limiting guide rail.

[0014] As a further improvement of the present application, when the sliding frame descends onto the bracket, the terminal is separated from the lightning arrester.

[0015] As a further improvement of the present application, a through hole matching the terminal is provided on the auxiliary plate, the terminal and the through hole slide relative to each other, and the distance between the bottom end of the limiting hoop and the surface of the auxiliary plate matches the maximum movable distance of the sliding frame.

[0016] As another improvement of the present application, the bottom end of the terminal is connected to a wire clamp via a soft wire, and a cable is passed between the wire clamp and the magnetic ring lightning protection structure.

[0017] As another improvement of the present application, a slot is provided on the inner wall of the insulation cylinder, and a block matching the slot is fixedly connected to the outer wall of the piston ring. When the movable cylinder is in the initial position, the piston ring is engaged with the slot, and a return spring is connected between the piston ring and the top of the inner wall of the insulation cylinder.

[0018] As another improvement of the present application, the heat pipe is made of flexible material, and a buffer is provided at the connection between the movable arm and the magnetic ring lightning protection structure. The buffer includes a sleeve connected to the movable end of the movable arm, and a movable column connected to the magnetic ring lightning protection structure is slidably provided in the sleeve, and a compression spring is connected between the movable column and the inner wall of the sleeve.

[0019] As another improvement of the present application, the bottom end of the lightning arrester is connected to a vertical docking part, a docking groove matching the docking seat is opened at the lower end of the vertical docking part, an arc extinguishing cavity for installing the arc extinguishing grid is provided at the front end of the docking groove, a docking column is installed at the bottom end of the fuse tube, one end of the docking column is inserted into the docking seat, and a supporting spring is connected between the docking column and the top end of the docking seat. After the explosion-proof connector is completely lowered with the rotating frame, the conductive end of the docking seat is located in the arc extinguishing cavity.

[0020] In summary, it is convenient to suppress lightning through magnetic rings, and when the intensity of lightning is low, or the lightning wave lasts for a long time, the explosion-proof connector can be disconnected non-destructively through the adjustment frame, so that the lightning arrester of the lightning suppression device falls and disconnects, and the triggering threshold of the circuit breaker can be set to a higher value, so that the explosion-proof connector is not easily triggered by low-intensity lightning, avoiding frequent replacement of the explosion-proof connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0022] Figure 2 It is a front view of the first and second embodiments of the present application;

[0023] Figure 3 It is a cross-sectional view of the first and second embodiments of the present application;

[0024] Figure 4 for Figure 3 The structural diagram at A in the middle;

[0025] Figure 5 for Figure 3 The structural diagram at B in the middle;

[0026] Figure 6 for Figure 3 Schematic diagram of the structure at C in the middle;

[0027] Figure 7 This is a schematic diagram of the descending state of the rotating frame of the first and second embodiments of the present application;

[0028] Figure 8 This is a schematic diagram of the disconnected state of the lightning arrester in the first and second embodiments of the present application.

[0029] Description of the numbers in the figure:

[0030] 1 insulator; 2 lightning arrester; 21 fuse tube; 22 docking column; 23 docking column; 3 rain cover; 4 rotating frame; 41 shell; 411 sliding frame; 42 shaft; 43 auxiliary hook; 44 auxiliary plate; 5 explosion-proof connector; 51 fuse column; 52 terminal; 521 docking seat; 53 thermal conductive column; 6 magnetic ring lightning protection structure; 61 mounting frame; 62 buckle; 63 magnetic ring body; 64 thermal conductive connecting block; 7 adjustment frame; 71 main frame plate; 711 limit guide rail; 72 thermal insulation tube; 73 movable tube; 74 thermal conductive pipe. DETAILED DESCRIPTION

[0031] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1 - Figure 8 The invention shows an isolated lightning suppression device, comprising an insulator 1, a lightning arrester 2 is arranged at the side end of the insulator 1, and a fuse tube 21 is arranged in the lightning arrester 2; a rainproof cover 3 and a rotating frame 4 are respectively connected between the upper and lower ends of the lightning arrester 2 and the insulator 1; an upper contact is installed at the upper end of the lightning arrester 2, a contact spring matching the upper contact is installed on the rainproof cover 3, a fastening bolt is plugged on the upper contact, a spring is arranged at the contact spring, one end of the spring is located between the fastening bolt and the rainproof cover 3, and the other end is located between the upper contact and the contact spring. When the fastening bolt is fixed and stable, the spring presses the contact spring, one end of the fastening bolt is plugged on the rainproof cover 3, and the other end is connected to the fuse in the fuse tube 21. When the fastening bolt loses the fuse tightening force, the fastening bolt loosens on the rainproof cover 3, thereby causing the spring to release the contact spring, so that the contact spring pushes the upper contact, and the lightning arrester 2 is assisted to fall.

[0034] A wiring terminal is provided at the top of the rainproof cover 3, and the upper contact is electrically connected to the wiring terminal;

[0035] The rotating frame 4 includes a housing 41 connected to the bottom end of the insulator 1, a rotating shaft 42 is rotatably connected to the housing 41, an auxiliary hook 43 and an auxiliary plate 44 are respectively connected to the upper end and the side end of the rotating shaft 42, a limiting hoop is connected between the auxiliary hook 43 and the bottom end of the lightning arrester 2, and an explosion-proof connector 5 is installed on the auxiliary plate 44;

[0036] The explosion-proof connector 5 includes a fuse column 51, and the upper and lower ends of the fuse column 51 are respectively connected to a terminal 52 and a heat-conducting column 53. The top of the terminal column 52 is plugged with a docking seat 521 that is docked with the lightning arrester 2, and the bottom of the docking seat 521 is supported by the fuse column 51. One end of the fuse column 51 is inserted into the terminal column 52 and supports the docking seat 521. After the fuse column 51 is melted, the part of the fuse column 51 inserted into the terminal column 52 falls down, and then the docking seat 521 is not supported. A conductive wire is connected to the heat-conducting column 53, and the lower end of the insulator 1 is connected to a magnetic ring lightning protection structure 6 through a movable arm; after the fuse column 51 is overheated and melted, the docking seat 521 slides downward and is disconnected from the lightning arrester 2;

[0037] The magnetic ring lightning protection structure 6 includes a mounting frame 61, on which a plurality of buckles 62 are mounted, and a magnetic ring body 63 is clamped in the buckles 62, a heat-conducting connecting block 64 is mounted on the top of the mounting frame 61, and a heat-conducting sheet connected to the heat-conducting connecting block 64 is laid on the inner wall of the mounting frame 61;

[0038] An adjusting frame 7 is connected between the insulator 1 and the rotating frame 4. The adjusting frame 7 includes a main frame plate 71, on which a heat-insulating tube 72 is installed. A movable tube 73 connected to the rotating frame 4 is inserted at the lower end of the heat-insulating tube 72. A heat-conducting pipe 74 is connected between the bottom end of the movable tube 73 and the heat-conducting connecting block 64. The heat-conducting pipe 74 extends into the heat-insulating tube 72. The heat-insulating tube 72 is filled with a thermal expansion liquid. A piston ring is installed at one end of the movable tube 73 located in the main frame plate 71.

[0039] A sliding frame 411 is installed at one end of the rotating frame 4 close to the insulator 1, a limiting guide rail 711 matching the sliding frame 411 is installed at the bottom end of the main frame plate 71, and a bracket is installed at the bottom end of the limiting guide rail 711.

[0040] The bottom end of the terminal 52 is connected to a threading clamp via a soft wire, and a cable is passed between the threading clamp and the magnetic ring lightning protection structure 6 .

[0041] A slot is provided on the inner wall of the insulation tube 72 , and a block matching the slot is fixedly connected to the outer wall of the piston ring. When the movable tube 73 is in the initial position, the piston ring is engaged with the slot, and a return spring is connected between the piston ring and the top of the inner wall of the insulation tube 72 .

[0042] The heat pipe 74 is made of flexible material, and a buffer is arranged at the connection between the movable arm and the magnetic ring lightning protection structure 6. The buffer includes a sleeve connected to the movable end of the movable arm, and a movable column connected to the magnetic ring lightning protection structure 6 is slidably arranged in the sleeve, and a compression spring is connected between the movable column and the inner wall of the sleeve.

[0043] When the present embodiment is working, the magnetic ring body 63 in the magnetic ring lightning protection structure 6 suppresses the lightning wave. If the intensity of the lightning wave after suppression is still greater than the trigger setting threshold of the circuit breaker, the fuse in the fuse column 51 and the fuse tube 21 will be blown due to the high-intensity lightning wave. At this time, the upper contact at the upper end of the lightning arrester 2 loses the tightening force of the fuse and is separated from the rain cover 3 under the action of the lightning arrester 2's own gravity and the upper contact spring, so that the circuit is disconnected.

[0044] If the intensity of the lightning wave is lower than the trigger setting threshold of the circuit breaker and lasts for a long time, the heat energy generated by the magnetic ring body 63 suppressing the lightning wave will be transferred to the inside of the heat insulation tube 72 through the heat conduction pipe 74, thereby causing the heat expansion liquid in the heat insulation tube 72 to expand due to the heat, thereby increasing the hydraulic pressure of the heat insulation tube 72, thereby pushing the piston ring downward, separating the clamping block on the piston ring from the clamping groove, and then the limit of the rotating frame 4 is released, and the rotating frame 4 descends along the limit guide rail 711, thereby causing the auxiliary hook 43 to drive the explosion-proof connector 5 to descend, thereby disconnecting the explosion-proof connector 5 from the lightning arrester 2, thereby realizing non-destructive disconnection of the explosion-proof connector 5, and easily avoiding the hidden dangers of line failure and accelerated equipment aging caused by continuous low-intensity lightning waves;

[0045] Moreover, the non-destructive disconnection facilitates the reconnection of the explosion-proof connector 5 , and the explosion-proof connector 5 can be reset by resetting the rotating frame 4 , which is convenient for maintenance.

[0046] This solution combines the dual lightning protection mechanism of the magnetic ring lightning protection structure 6 and the fuse column 51. The magnetic ring body 63 can effectively suppress lightning waves. When the intensity of the lightning wave exceeds the trigger setting threshold of the circuit breaker, the fuse column 51 will melt, realizing the circuit breaking of the lightning arrester 2, thereby effectively protecting the equipment and lines from lightning damage, thereby realizing dual lightning protection.

[0047] At the same time, this solution adopts a non-destructive circuit breaking design: for continuous low-intensity lightning waves, the solution uses the effect of thermal expansion liquid to push the rotating frame 4 down, disconnecting the explosion-proof connector 5 from the lightning arrester 2, and realizing non-destructive circuit breaking. This design not only avoids the hidden dangers of line failure, but also slows down the aging of equipment, and facilitates subsequent reconnection and maintenance.

[0048] A circuit breaker reset mechanism is also provided: the design of the adjustment frame 7 and the heat insulation tube 72 realizes the flexible adjustment and reset of the rotating frame 4. When the lightning wave disappears or weakens, the rotating frame 4 and the explosion-proof connector 5 can be easily reset through the reset mechanism to restore the normal operation of the equipment.

[0049] This solution is compact and easy to install and maintain: the entire device has a compact structure and the components are tightly connected, which not only reduces the floor space, but also facilitates installation and maintenance. At the same time, the explosion-proof connector 5 can be disconnected and reset through simple operations, which improves maintenance efficiency.

[0050] Second implementation method:

[0051] Figure 3 - Figure 7 As shown, the bottom end of the lightning arrester 2 is connected to the vertical docking part, the lower end of the vertical docking part is provided with a docking groove matching the docking seat 521, the front end of the docking groove is provided with an arc extinguishing cavity for installing the arc extinguishing grid, the bottom end of the fuse tube 21 is installed with a docking column 22, one end of the docking column 22 is inserted into the docking seat 521, and a supporting spring 23 is connected between the docking column 22 and the top of the docking seat 521, and after the explosion-proof connector 5 is completely lowered with the rotating frame 4, the conductive end of the docking seat 521 is located in the arc extinguishing cavity;

[0052] The length directions of the vertical docking portion, the docking seat 521 and the docking column 22 are all consistent with the moving direction of the movable cylinder 73, ensuring that the docking column 22 descends in the same direction when the movable cylinder 73 descends; and after the docking column 22 descends, the support spring 23 plays a role in supporting the lightning arrester 2, thereby ensuring that after the docking column 22 descends, the upper contact at the upper end of the lightning arrester 2 maintains contact with the spring sheet;

[0053] When the sliding frame 411 is lowered onto the bracket, the terminal 52 is separated from the lightning arrester 2. A through hole matching the terminal 52 is provided on the auxiliary plate 44, and the terminal 52 slides relative to the through hole, and the distance between the bottom end of the limit hoop and the surface of the auxiliary plate 44 matches the maximum movable distance of the sliding frame 411.

[0054] After the terminal 52 of this embodiment is lowered with the rotating frame 4, the terminal 52 is still located in the lightning arrester 2. At this time, if the intensity of the lightning wave increases, the explosion-proof connector 5 can also be melted, and then the explosion-proof connector 5 is separated from the rain cover 3, so that the lightning arrester 2 falls;

[0055] In this embodiment, after the explosion-proof connector 5 is disconnected from the lightning arrester 2, the lightning arrester 2 can still be dropped when the lightning intensity is higher than the trigger setting threshold of the circuit breaker, so that maintenance personnel can quickly identify the position of the disconnected lightning arrester 2.

[0056] In summary, the present embodiment realizes the convenience of suppressing lightning through magnetic rings, and in the case of low-intensity lightning, or when the lightning wave lasts for a long time, the explosion-proof connector 5 can be non-destructively disconnected by adjusting the frame 7, so that the lightning arrester 2 of the lightning suppression device falls and disconnects, and the triggering threshold of the circuit breaker can be set to a higher value, so that the explosion-proof connector 5 is not easily triggered by low-intensity lightning, thereby avoiding frequent replacement of the explosion-proof connector 5.

[0057] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An isolated lightning suppression device, comprising an insulator (1), a lightning arrester (2) is arranged at the side end of the insulator (1), a fuse tube (21) is arranged in the lightning arrester (2), and a rainproof cover (3) and a rotating frame (4) are respectively connected between the upper and lower ends of the lightning arrester (2) and the insulator (1); characterized in that: The rotating frame (4) comprises a shell (41) connected to the bottom end of the insulator (1), a rotating shaft (42) is rotatably connected to the shell (41), an auxiliary hook (43) and an auxiliary plate (44) are respectively connected to the upper end and the side end of the rotating shaft (42), a limiting hoop is connected between the auxiliary hook (43) and the bottom end of the lightning arrester (2), and an explosion-proof connector (5) is installed on the auxiliary plate (44); The explosion-proof connector (5) comprises a fuse column (51), the upper and lower ends of the fuse column (51) are respectively connected to a terminal column (52) and a heat-conducting column (53), the top end of the terminal column (52) is plugged with a docking seat (521) docked with the lightning arrester (2), the bottom end of the docking seat (521) is supported by the fuse column (51), the heat-conducting column (53) is connected to a conductive wire, and the lower end of the insulator (1) is connected to a magnetic ring lightning protection structure (6) via a movable arm; The magnetic ring lightning protection structure (6) comprises a mounting frame (61), a plurality of buckles (62) are mounted on the mounting frame (61), a magnetic ring body (63) is clamped inside the buckles (62), a heat-conducting connecting block (64) is mounted on the top of the mounting frame (61), and a heat-conducting sheet connected to the heat-conducting connecting block (64) is laid on the inner wall of the mounting frame (61); An adjustment frame (7) is connected between the insulator (1) and the rotating frame (4), and the adjustment frame (7) comprises a main frame plate (71). A heat insulating cylinder (72) is installed on the main frame plate (71). A movable cylinder (73) connected to the rotating frame (4) is inserted at the lower end of the heat insulating cylinder (72). A heat conducting pipe (74) is connected between the bottom end of the movable cylinder (73) and the heat conducting connecting block (64). The heat conducting pipe (74) extends into the heat insulating cylinder (72). The heat insulating cylinder (72) is filled with a thermal expansion liquid. A piston ring is installed at one end of the movable cylinder (73) located in the main frame plate (71).

2. The isolated lightning suppression device according to claim 1, characterized in that: A sliding frame (411) is installed at one end of the rotating frame (4) close to the insulator (1), a limiting guide rail (711) matching the sliding frame (411) is installed at the bottom end of the main frame plate (71), and a bracket is installed at the bottom end of the limiting guide rail (711).

3. The isolated lightning suppression device according to claim 2, characterized in that: When the sliding frame (411) descends onto the bracket, the terminal (52) is separated from the lightning arrester (2).

4. The isolated lightning suppression device according to claim 3, characterized in that: The auxiliary plate (44) is provided with a through hole matching the terminal (52), the terminal (52) and the through hole slide relative to each other, and the distance between the bottom end of the limiting hoop and the surface of the auxiliary plate (44) matches the maximum movable distance of the sliding frame (411).

5. The isolated lightning suppression device according to claim 1, characterized in that: The bottom end of the terminal (52) is connected to a wire clamp via a soft wire, and a cable is passed between the wire clamp and the magnetic ring lightning protection structure (6).

6. The isolated lightning suppression device according to claim 1, characterized in that: A slot is provided on the inner wall of the heat-insulating cylinder (72), and a block matching the slot is fixedly connected to the outer wall of the piston ring. When the movable cylinder (73) is in the initial position, the piston ring is engaged with the slot, and a return spring is connected between the piston ring and the top end of the inner wall of the heat-insulating cylinder (72).

7. The isolated lightning suppression device according to claim 1, characterized in that: The heat conducting pipe (74) is made of a flexible material, a buffer is provided at the connection between the movable arm and the magnetic ring lightning protection structure (6), the buffer comprises a sleeve connected to the movable end of the movable arm, a movable column connected to the magnetic ring lightning protection structure (6) is slidably provided in the sleeve, and a compression spring is connected between the movable column and the inner wall of the sleeve.

8. The isolated lightning suppression device according to claim 1, characterized in that: The bottom end of the lightning arrester (2) is connected to a vertical docking portion, a docking groove matching the docking seat (521) is provided at the lower end of the vertical docking portion, an arc extinguishing cavity for installing an arc extinguishing grid is provided at the front end of the docking groove, a docking column (22) is installed at the bottom end of the fuse tube (21), one end of the docking column (22) is inserted into the docking seat (521), and a supporting spring (23) is connected between the docking column (22) and the top end of the docking seat (521), and after the explosion-proof connector (5) is completely lowered along with the rotating frame (4), the conductive end of the docking seat (521) is located in the arc extinguishing cavity.

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