Sealing device for composite housed lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, in particular to a sealing device for a composite jacket lightning arrester, which comprises a lightning arrester body, the outer wall of the lightning arrester body is fixedly connected with the same rubber jacket through a plurality of shock-proof rings, and the top end and the bottom end of the rubber jacket are both provided with limiting structures. The limiting structure comprises a positioning clamping box which is in sliding clamping connection with the inner wall of the rubber outer sleeve, the inner wall of the positioning clamping box is fixedly connected with a sealing disc through two symmetrically-arranged limiting springs, a connecting column is slidably inserted in the center of the sealing disc, and the end, away from the positioning clamping box, of the connecting column is fixedly connected with a limiting block; the end, away from the sealing disc, of the connecting column is fixedly connected with a binding post through a connecting spring, and a sealing structure is installed outside the positioning clamping box. According to the utility model, the positioning clamping box and the sealing disc are matched for use, so that the lightning arrester body can be conveniently positioned in a closed environment, and moisture is prevented from contacting with the lightning arrester body to cause damage.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to a sealing device for a composite jacket lightning arrester. Background Art

[0002] The composite jacket arrester is a kind of arrester with good protection performance. It utilizes the nonlinear volt-ampere characteristics of zinc oxide. Under normal working voltage, the current flowing through the arrester is extremely small. When overvoltage occurs, the resistance drops sharply, discharging the overvoltage energy to achieve the protection effect. Compared with the porcelain jacket arrester, the composite jacket arrester has a smaller size, lower production cost, and is more convenient to transport and install.

[0003] There are many composite jacket lightning arrester sealing devices on the market, for example, a composite jacket lightning arrester sealing structure with publication number CN217740286U, including No. 1 flange, No. 2 flange, core body, positioning tie rods and a silicone umbrella skirt jacket integrally formed around the positioning tie rods, and a waterproof rubber ring is respectively provided at the connection between the two ends of the silicone umbrella skirt jacket and the No. 1 flange and the No. 2 flange, and the inner sides of the two waterproof rubber rings are bonded to the outer surfaces of the No. 1 flange, the No. 2 flange and the silicone umbrella skirt jacket through a vulcanizing aid and a high-temperature and high-pressure vulcanizing agent.

[0004] This product creates an absolutely sealed and enclosed environment inside the entire arrester, thereby isolating moisture from entering and ensuring long-term stable operation of the arrester. However, there is no collision prevention structure on the outside of the rubber jacket. In severe weather conditions, once the arrester is hit by an external object, the internal core or terminal may be damaged. In view of this, we propose a sealing device for a composite jacket arrester. Utility Model Content

[0005] The utility model aims to provide a sealing device for a composite jacket arrester to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sealing device for a composite jacket lightning arrester comprises a lightning arrester body, the outer wall of the lightning arrester body is fixedly connected to the same rubber jacket via a plurality of shock-absorbing rings, limiting structures are installed at both the top and bottom ends of the rubber jacket, the limiting structure comprises a positioning card box slidably engaged with the inner wall of the rubber jacket, the inner wall of the positioning card box is fixedly connected to a sealing disk via two symmetrically arranged limiting springs, a connecting column is slidably inserted at the center of the sealing disk, one end of the connecting column away from the positioning card box is fixedly connected to a limiting block, one end of the connecting column away from the limiting block is fixedly connected to a terminal via a connecting spring, a sealing structure is installed on the outside of the positioning card box, and the sealing structure comprises a protective frame fixed to the outside of the positioning card box via a plurality of buffer springs.

[0008] Preferably, a plurality of the shock absorbing rings are arranged at equal intervals on the outer wall of the arrester body, and the shock absorbing rings are made of Teflon insulating material.

[0009] Preferably, a fixing block for fixedly connecting with the inner wall of the rubber jacket is installed on the side wall of the shock-absorbing ring, and the fixing block is composed of a slot and two symmetrical and synchronously clamped blocks inside the slot, and the two blocks are integrally connected.

[0010] Preferably, the sealing disk is clamped and fixed inside the rubber jacket, and one end of the limiting block away from the sealing disk is tightly fitted with the surface of the arrester body.

[0011] Preferably, a through hole for accommodating the sliding of the connecting column is opened at the center of the sealing disk, and the limiting block is sleeved and fixed on the outer wall of the connecting column.

[0012] Preferably, a plurality of the buffer springs are arranged in a ring shape at equal intervals on the inner wall of the protection frame, and a layer of moisture-absorbing material of sodium polyacrylate is attached to the inner wall of the protection frame.

[0013] Preferably, the outer walls of the protective frame and the rubber jacket are both installed with flange rings of the same size, and the surface of the flange ring is provided with a plurality of through holes distributed in a ring shape, and two adjacent flange rings are fixedly connected by a plurality of bolts and their matching nuts.

[0014] Preferably, the terminal is used to connect electrical equipment and protect the equipment from damage caused by lightning strikes and overvoltage. The terminal extends to the outside through the side wall of the positioning card box, and the surface of the protective frame is provided with an installation groove for accommodating the terminal.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The sealing device for the composite jacket arrester limits the terminal from falling off through the limit block, and through the coordinated use of the positioning card box and the sealing disk, the arrester body is placed in a closed environment to prevent moisture from contacting the arrester body and causing damage.

[0017] 2. The sealing device for the composite jacket arrester performs secondary sealing on the arrester body through the connection between the protection frame and the rubber jacket flange, and disperses the pressure from external collision through the provided buffer spring, thereby protecting the arrester body and improving the durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded view of some structures in the utility model;

[0020] Figure 3 It is an exploded view of the fixed block structure in the utility model;

[0021] Figure 4 It is a plan cross-sectional view of the overall structure in the utility model;

[0022] Figure 5 It is a cross-sectional view of the limiting structure in the utility model;

[0023] Figure 6 It is an exploded diagram of the sealing structure in the utility model.

[0024] In the figure:

[0025] 1. Arrester body; 11. Shock absorber ring; 12. Fixing block; 121. Card slot; 122. Card block;

[0026] 2. Rubber jacket;

[0027] 3. Limiting structure; 31. Positioning card box; 32. Limiting spring; 33. Sealing disk; 34. Connecting column; 35. Limiting block; 36. Connecting spring; 37. Terminal;

[0028] 4. Sealing structure; 41. Protective frame; 411. Mounting slot; 42. Bolt; 43. Buffer spring;

[0029] 5. Flange ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0032] A sealing device for a composite jacket lightning arrester comprises an arrester body 1, the outer wall of the arrester body 1 is fixedly connected to a same rubber jacket 2 through a plurality of shock-absorbing rings 11, a limiting structure 3 is installed at both the top and bottom ends of the rubber jacket 2, the limiting structure 3 comprises a positioning card box 31 slidably engaged with the inner wall of the rubber jacket 2, the inner wall of the positioning card box 31 is fixedly connected to a sealing disk 33 through two symmetrically arranged limiting springs 32, a connecting column 34 is slidably inserted at the center of the sealing disk 33, one end of the connecting column 34 away from the positioning card box 31 is fixedly connected to a limiting block 35, and one end of the connecting column 34 away from the limiting block 35 is fixedly connected to a terminal 37 through a connecting spring 36, a sealing structure 4 is installed on the outside of the positioning card box 31, the sealing structure 4 comprises a protective frame 41 fixed to the outside of the positioning card box 31 through a plurality of buffer springs 43, and the positioning card box 31 and the sealing disk 33 are used in combination to facilitate the arrester body 1 to be placed in a closed environment to prevent moisture from contacting the arrester body 1 and causing damage.

[0033] In this embodiment, a plurality of shock absorbing rings 11 are arranged at equal intervals on the outer wall of the arrester body 1. The shock absorbing rings 11 are made of Teflon insulating material. The shock absorbing rings 11 are composed of components such as nonlinear resistors, capacitors and inductors, and have the functions of suppressing overvoltage and absorbing energy. When a lightning strike occurs, the shock absorbing rings 11 can respond quickly to limit the amplitude and steepness of the overvoltage, thereby ensuring the normal operation of the arrester body 1.

[0034] Then, a fixing block 12 for fixing the connection with the inner wall of the rubber jacket 2 is installed on the side wall of the shock-absorbing ring 11. The fixing block 12 is composed of a slot 121 and two symmetrical and synchronously connected blocks 122 in the slot 121. The two blocks 122 are connected as one body, thereby fixing the position of the arrester body 1.

[0035] Next, the sealing disk 33 is clamped and fixed inside the rubber jacket 2, and one end of the limiting block 35 away from the sealing disk 33 is closely fitted with the surface of the arrester body 1, so as to facilitate the normal use of the structure.

[0036] Furthermore, a through hole for accommodating the sliding of the connecting column 34 is opened at the center of the sealing disk 33, and the limiting block 35 is sleeved and fixed on the outer wall of the connecting column 34, so as to better protect the arrester body 1.

[0037] It should be noted that a plurality of buffer springs 43 are arranged in a ring shape at equal intervals on the inner wall of the protection frame 41 , and a layer of moisture absorbing material of sodium polyacrylate is attached to the inner wall of the protection frame 41 to further protect the arrester body 1 .

[0038] It should be noted that flange rings 5 ​​of the same size are installed on the outer walls of the protective frame 41 and the rubber jacket 2. A plurality of through holes distributed in a ring shape are provided on the surface of the flange ring 5. Two adjacent flange rings 5 ​​are fixedly connected by a plurality of bolts 42 and their matching nuts, thereby improving the sealing effect of the device.

[0039] It is worth noting that the terminal 37 is used to connect electrical equipment and protect the equipment from damage caused by lightning strikes and overvoltage. The terminal 37 extends to the outside through the side wall of the positioning card box 31, and the surface of the protective frame 41 is provided with an installation groove 411 for accommodating the terminal 37 to pass through, so as to facilitate the normal use of the structure.

[0040] When the sealing device for the composite jacket lightning arrester of the utility model is in use, the lightning arrester body 1 is fixed to the inside of the rubber jacket 2 by a plurality of shock-absorbing rings 11, and the inside of the rubber jacket 2 is clamped and fixed with sealing disks 33 at the upper and lower ends of the lightning arrester body 1, so as to prevent moisture from contacting the lightning arrester body 1, and the connection post 34, the connection spring 36 and the terminal post 37 are used in coordination to prevent the terminal post 37 from falling off to the outside of the positioning card box 31, and the positioning card box 31 is further protected and isolated by the coordinated use of the protective frame 41 and a plurality of buffer springs 43, thereby ensuring the sealing effect of the lightning arrester body 1 in the rubber jacket 2.

[0041] The above shows and describes the basic principle, main features and advantages of the present embodiment of the utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiment. The above embodiment and description are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present embodiment may have various changes and improvements, which fall within the scope of the present utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing device for a composite jacket arrester, comprising an arrester body (1), characterized in that: The outer wall of the arrester body (1) is fixedly connected to a rubber jacket (2) via a plurality of shock-absorbing rings (11); a limiting structure (3) is installed at both the top and bottom ends of the rubber jacket (2); the limiting structure (3) comprises a positioning card box (31) slidably engaged with the inner wall of the rubber jacket (2); the inner wall of the positioning card box (31) is fixedly connected to a sealing disk (33) via two symmetrically arranged limiting springs (32); a connecting column (34) is slidably inserted at the center of the sealing disk (33); one end of the connecting column (34) away from the positioning card box (31) is fixedly connected to a limiting block (35); one end of the connecting column (34) away from the limiting block (35) is fixedly connected to a terminal (37) via a connecting spring (36); a sealing structure (4) is installed outside the positioning card box (31); the sealing structure (4) comprises a protective frame (41) fixed to the outside of the positioning card box (31) via a plurality of buffer springs (43).

2. The sealing device for composite jacket arrester according to claim 1, characterized in that: A plurality of the shock absorbing rings (11) are arranged at equal intervals on the outer wall of the arrester body (1), and the shock absorbing rings (11) are made of Teflon insulating material.

3. The sealing device for composite jacket arrester according to claim 2, characterized in that: A fixing block (12) for fixingly connecting to the inner wall of the rubber jacket (2) is mounted on the side wall of the shock-absorbing ring (11); the fixing block (12) is composed of a clamping groove (121) and two clamping blocks (122) symmetrically and synchronously clamped inside the clamping groove (121); the two clamping blocks (122) are connected as one piece.

4. The sealing device for composite jacket arrester according to claim 1, characterized in that: The sealing disk (33) is clamped and fixed inside the rubber jacket (2), and one end of the limiting block (35) away from the sealing disk (33) is tightly fitted to the surface of the arrester body (1).

5. The sealing device for composite jacket arrester according to claim 4, characterized in that: A through hole for accommodating the sliding of the connecting column (34) is provided at the center of the sealing disk (33), and the limiting block (35) is sleeved and fixed on the outer wall of the connecting column (34).

6. The sealing device for composite jacket arrester according to claim 1, characterized in that: A plurality of the buffer springs (43) are arranged in a ring shape at equal intervals on the inner wall of the protection frame (41), and a layer of sodium polyacrylate moisture absorbing material is attached to the inner wall of the protection frame (41).

7. The sealing device for composite jacket arrester according to claim 6, characterized in that: The outer walls of the protective frame (41) and the rubber jacket (2) are both equipped with flange rings (5) of the same size, and the surface of the flange ring (5) is provided with a plurality of through holes distributed in an annular shape, and two adjacent flange rings (5) are fixedly connected by a plurality of bolts (42) and their matching nuts.

8. The sealing device for composite jacket arrester according to claim 1, characterized in that: The terminal (37) is used to connect electrical equipment and protect the equipment from damage caused by lightning strikes and overvoltage. The terminal (37) passes through the side wall of the positioning card box (31) and extends to the outside. The surface of the protection frame (41) is provided with a mounting groove (411) for accommodating the terminal (37) to pass through.

Images