Vertical lightning-protection insulation structure and discrete lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, in particular to a vertical lightning insulation structure and a discrete lightning arrester. A column insulator is arranged, a first limiting groove is formed in the inner wall of the column insulator, a limiting protruding block is annularly arranged on the outer wall of a protruding plate, the limiting protruding block and the first limiting groove are clamped and fixed, a first supporting handle supports the protruding plate to enable the protruding plate to expand towards the outer side of a bolt pipe, and the limiting protruding block is clamped and embedded into the first limiting groove so that normal use can be facilitated. When the post insulator needs to be replaced, the push rod is pushed to enable the first supporting handle to slide to be separated from the protruding plate, the protruding plate is contracted towards the inner side of the bolt pipe, the first limiting column slides into the first sleeve, the bolt pipe and the post insulator are unlocked, then replacement or maintenance of the post insulator can be achieved, and convenience and rapidness are achieved. On the other hand, according to the discrete lightning arrester provided by the utility model, when the post insulator is damaged, the post insulator can be independently maintained, so that the convenience and the rapidness are realized, and the resource waste caused by overall scrapping of the lightning arrester is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to a vertical lightning protection insulation structure and a discrete lightning arrester. Background Technique

[0002] The discrete lightning arrester device is a new type of lightning protection device developed to reduce the repair time of power line faults caused by lightning strikes. It is an alternating current gapless distribution type discrete composite insulation zinc oxide lightning arrester device, which has the advantages of stable protection performance, long service life, strong power frequency voltage withstand capacity, and pollution resistance. Chinese Patent CN2391360Y discloses a discrete self-disconnecting lightning arrester device, which is particularly suitable for lightning protection devices of 10KV power lines such as railway self-closed and through lines and railway traction power supply lines. Its characteristics are as follows: there are a rain cap and a duckbill on the upper connection bolt, the contact head connected to the disconnector is pressed and inserted into the duckbill, there is a pull ring under the contact head, the other end of the disconnector is connected to a pull handle, the pull handle is connected to the upper end of the lightning arrester body, the lower end of the lightning arrester body is connected to a hook rotating body, the hook rotating body falls into the bracket rotating guide groove, the current-carrying pressing piece on the bracket contacts the rotating body current-carrying contact head, and the bracket is connected to the lower end connection bolt of the support insulator. It constitutes a discrete self-disconnecting lightning arrester device.

[0003] Although the above-mentioned discrete self-disconnecting lightning arrester device has a good lightning protection effect, the device lacks a quick-disassembly mechanism, so that when disassembling and replacing the insulator, the bolts need to be repeatedly screwed, resulting in a cumbersome disassembly problem. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vertical lightning protection insulation structure and a discrete lightning arrester that are convenient for disassembling the insulator.

[0005] To achieve the above purpose, the utility model provides a vertical lightning protection insulation structure, including: a post insulator, a first limiting groove is opened on the inner wall of the post insulator, and the first limiting groove is distributed circumferentially along the inner wall of the post insulator; an insertion pin tube is arranged inside the post insulator, and the insertion pin tube extends in the vertical direction and is slidably connected to the post insulator;

[0006] A plurality of bayonet openings are opened on the side wall of the insertion pin tube, and the plurality of bayonet openings are spaced apart along the side wall of the insertion pin tube. A convex plate is arranged on the bayonet opening, and the convex plate protrudes towards the inside of the insertion pin tube; a limiting convex block is circumferentially arranged on the outer wall of the convex plate, and the limiting convex block can be clamped with the first limiting groove;

[0007] The inner side of the convex plate is provided with a first limiting post, and the first limiting post is horizontally arranged and extends towards the central axis direction of the plug tube; the inner wall of the plug tube is provided with a plurality of first sleeves, and the plurality of first sleeves are circumferentially distributed along the inner wall of the plug tube. The first sleeves are horizontally arranged and extend towards the central axis direction of the plug tube, and the first sleeves are slidably connected with the first limiting posts;

[0008] A push rod is arranged inside the plug tube, a first support handle is arranged at the bottom end of the push rod, the first support handle is fixedly connected with the push rod, and the first support handle can slide up and down along the inner wall of the plug tube.

[0009] Optionally, the first sleeves and the first limiting posts are arranged in one-to-one correspondence.

[0010] Optionally, the number of both the first sleeves and the bayonets is two.

[0011] Optionally, the convex plate is arc-shaped.

[0012] Optionally, a limiting spring is arranged inside the first sleeve, a first end of the limiting spring is fixedly connected with the end of the first sleeve, and a second end of the limiting spring is fixedly connected with the first limiting post.

[0013] Optionally, a bracket is arranged at the bottom of the plug tube, and the bracket is detachably connected with the plug tube.

[0014] Optionally, a plurality of second sleeves are arranged on a surface of the bracket away from the post insulator, and the plurality of second sleeves are spaced apart along the circumferential side of the plug tube. The second sleeves are horizontally arranged and extend towards the central axis direction of the plug tube; a second limiting post is arranged inside the second sleeve, and the second limiting post is slidably connected with the second sleeve;

[0015] A plurality of second limiting grooves are formed on the outer wall surface of the plug tube, and the plurality of second limiting grooves are spaced apart along the outer wall surface of the plug tube. The second limiting post can be clamped with the second limiting groove.

[0016] Optionally, in the vertical direction, the size of the push rod is larger than that of the plug tube.

[0017] Optionally, a second support handle is arranged at the top end of the push rod.

[0018] The present utility model further provides a discrete lightning arrester, including the vertical lightning protection insulation structure as described above, including a lightning arrester body and a disconnector. The disconnector is arranged at the top end of the lightning arrester body, and one end of the disconnector away from the lightning arrester body is connected with the vertical lightning protection insulation structure.

[0019] The technical solution provided by the present utility model has the following advantages compared with the prior art:

[0020] The vertical lightning protection insulation structure provided by the present utility model is provided with column insulators and first limiting grooves are opened on the inner walls of the support insulators. At the same time, limiting protrusions are circumferentially arranged on the outer walls of the convex plates, so that the limiting protrusions and the first limiting grooves are clamped and fixed. Specifically, the convex plates are supported by the first support handles so that the convex plates expand towards the outside of the plug pipes, and then the limiting protrusions are clamped into the first limiting grooves for normal use. When the support insulators need to be replaced, the first support handles are slid away from the convex plates by pushing the push rods, so that the convex plates contract towards the inside of the plug pipes, and the first limiting posts slide into the first sleeves, so that the plug pipes are unlocked from the support insulators, and then the replacement or maintenance of the support insulators can be realized, which is convenient and fast. On the other hand, for the split lightning arrester provided by the present utility model, when the support insulator is damaged, it can be repaired separately, which is convenient and fast, and avoids the waste of resources caused by the overall scrapping of the lightning arrester. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present utility model and used together with the description to explain the principles of the present utility model.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the vertical lightning protection insulation structure according to an embodiment of the present utility model;

[0024] Figure 2 For Figure 1 Enlarged structural diagram at position A in

[0025] Figure 3 Schematic diagram of the internal structure of the plug pipe according to an embodiment of the present utility model;

[0026] Figure 4 Partial schematic diagram of the vertical lightning protection insulation structure according to an embodiment of the present utility model;

[0027] Figure 5 Schematic diagram of the structure of the split lightning arrester according to an embodiment of the present utility model.

[0028] Among them, 1. Post insulator; 11. First limiting groove; 2. Plug pin tube; 21. Limiting convex block; 22. First sleeve; 23. Second limiting groove; 3. Convex plate; 31. First limiting post; 4. Push rod; 41. First supporting handle; 42. Second supporting handle; 5. Limiting spring; 6. Bracket; 61. Second sleeve; 611. Second limiting post; 7. Lightning arrester body; 8. Disconnector. Detailed implementation mode

[0029] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present invention, the solution of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] The vertical lightning protection insulation structure and the split lightning arrester will be described in detail below through specific embodiments:

[0032] As Figures 1 to 3 shown, a vertical lightning protection insulation structure provided by the present invention, a post insulator 1, the inner wall of the post insulator 1 is provided with a first limiting groove 11, and the first limiting groove 11 is distributed circumferentially along the inner wall of the post insulator 1. An insertion pin tube 2 is arranged inside the post insulator 1, and the insertion pin tube 2 extends in the vertical direction and is slidably connected to the post insulator 1.

[0033] A plurality of bayonet openings are arranged on the side wall of the plug pin tube 2, and the plurality of bayonet openings are spaced apart along the side wall of the plug pin tube 2. A convex plate 3 is arranged on the bayonet opening, and the convex plate 3 protrudes towards the inside of the plug pin tube 2; a limiting convex block 21 is circumferentially arranged on the outer wall of the convex plate 3, and the limiting convex block 21 can be clamped with the first limiting groove 11.

[0034] A first limiting post 31 is arranged inside the convex plate 3, and the first limiting post 31 is horizontally arranged and extends towards the central axis direction of the plug pin tube 2. A plurality of first sleeves 22 are arranged on the inner wall of the plug pin tube 2, and the plurality of first sleeves 22 are circumferentially distributed along the inner wall of the plug pin tube 2. The first sleeves 22 are horizontally arranged and extend towards the central axis direction of the plug pin tube 2, and the first sleeves 22 are slidably connected to the first limiting posts 31.

[0035] A push rod 4 is arranged inside the plug pin tube 2, a first supporting handle 41 is arranged at the bottom end of the push rod 4, the first supporting handle 41 is fixedly connected to the push rod 4, and the first supporting handle 41 can slide up and down along the inner wall of the plug pin tube 2.

[0036] A push rod 4 is provided inside the latch tube 2 , and a first support handle 41 is provided at the bottom end of the push rod 4 . The first support handle 41 is fixedly connected to the push rod 4 , and the first support handle 41 can slide up and down along the inner wall of the latch tube 2 .

[0037] The post insulator 1 may be a hollow structure, the first limiting groove 11 may be an annular tubular structure, and a plurality of annular first limiting grooves 11 may be provided on the inner wall of the post insulator 1, and the plurality of annular first limiting grooves 11 spirally rise along the inner wall of the post insulator 1. The above-mentioned latch tube 2 may be sleeved inside the post insulator 1 so as to slide relative to the post insulator 1. It is understandable that the post insulator 1 and the latch tube 2 are both vertical tubular structures, the outer diameter of the latch tube 2 is smaller than the inner diameter of the post insulator 1, and the length of the latch tube 2 may be greater than the length of the post insulator 1, so that when the latch tube 2 is sleeved on the post insulator 1, both ends may be exposed at the ends of the post insulator 1, thereby facilitating disassembly or connection of external equipment.

[0038] Furthermore, a plurality of bayonet holes are provided on the side wall of the latch tube 2, and the bayonet holes can be distributed at intervals along the circumference of the latch tube 2, that is, a plurality of through holes are provided on the closed wall of the latch tube 2, and a convex plate 3 is provided on the through hole. It can be understood that the shape and size of the convex plate 3 match the shape and size of the bayonet hole. The protrusion of the convex plate 3 toward the inside of the latch tube 2 means that the convex plate 3 protrudes a certain height toward the center direction of the latch tube 2, and the specific height size can be determined according to the actual application. Furthermore, a limiting protrusion 21 is provided in the circumferential direction of the outer wall of the convex plate 3, and the limiting protrusion 21 can be a plurality of annular structures, and the limiting protrusions 21 of the plurality of annular structures can rise in a spiral along the outer wall of the convex plate 3 to facilitate the engagement with the first limiting groove 11.

[0039] A plurality of first sleeves 22 can be welded to the inner wall of the latch tube 2 through a connecting rod. It can be understood that the plurality of first sleeves 22 are in the same horizontal plane in the latch tube 2 and are evenly distributed in the circumferential direction. Furthermore, the first limiting column 31 can be a rod with a telescopic function, so that the first sleeve 22 is slidably connected with the first limiting column 31. When the first limiting column 31 slides into the first sleeve 22, the latch tube 2 and the post insulator 1 are unlocked. When the first limiting column 31 slides out of the first sleeve 22, the limiting protrusion 21 on the outer wall of the convex plate 3 is inserted into the first limiting groove 11 on the inner wall of the post insulator 1, so that the latch tube 2 and the post insulator 1 are locked.

[0040] Furthermore, a push rod 4 is arranged inside the latch tube 2, and a first support handle 41 is arranged at the bottom end of the push rod 4. The first support handle 41 may be a tapered structure. The first support handle 41 may slide up and down along the inner wall of the latch tube 2. It is understood that the outer diameter of the first support handle 41 is slightly smaller than or equal to the inner diameter of the latch tube 2, so that when the first support handle 41 slides to the convex plate 3, the convex plate 3 may be opened to allow the limiting protrusion 21 to be clamped into the first limiting groove 11.

[0041] The disassembly and assembly process of this vertical lightning protection insulation structure will be described in detail below:

[0042] When this vertical lightning protection insulation structure is in normal use, the first support handle 41 is located between the convex plates 3. There is mutual extrusion between the first support handle 41 and the convex plates 3. The first limit post 31 extends out of the first sleeve 22, the convex plates 3 are in an expanded state, and the limit bumps 21 on the outer sides of the convex plates 3 are clamped in the first limit grooves 11, so that the whole plug pin tube 2 is relatively locked with the post insulator 1.

[0043] When the post insulator 1 needs to be replaced, press the push rod 4 so that the first support handle 41 slides downward and gets out of the extrusion of the convex plates 3. Since the sliding of the first limit post 31 and the first sleeve 22 can pull the convex plates 3 inward to make the convex plates 3 contract, the limit bumps 21 are disengaged from the first limit grooves 11, so that the plug pin tube 2 is unlocked from the post insulator 1, and then the plug pin tube 2 can be pulled out upward from the post insulator 1 for replacement, which is convenient and fast.

[0044] For the vertical lightning protection insulation structure provided by the present utility model, by arranging a post insulator and opening a first limit groove 11 on the inner wall of the post insulator 1, and at the same time circumferentially arranging limit bumps 21 on the outer wall of the convex plates 3, the limit bumps 21 and the first limit grooves 11 are clamped and fixed. Specifically, the convex plates 3 are supported by the first support handle 41 to expand the convex plates 3 outward from the plug pin tube 2, so that the limit bumps 21 are clamped in the first limit grooves 11 for normal use. When the post insulator 1 needs to be replaced, by pushing the push rod 4 to make the first support handle 41 slide away from the convex plates 3, the convex plates 3 contract inward from the plug pin tube 2, and the first limit post 31 slides into the first sleeve 22, so that the plug pin tube 2 is unlocked from the post insulator 1, and then the replacement or repair of the post insulator 1 can be realized, which is convenient and fast.

[0045] Further, the first sleeves 22 and the first limit posts 31 are arranged in one-to-one correspondence.

[0046] The above one-to-one correspondence setting means that the number of the first sleeves 22 is the same as that of the first limit posts 31, and the first limit posts 31 can be horizontally inserted into the first sleeves 22.

[0047] In some embodiments, the number of both the first sleeves 22 and the bayonets is two.

[0048] The interval angle between the two first sleeves 22 can be 180 degrees, that is, centrosymmetric about the central axis of the plug pin tube 2. The arrangement mode of the bayonets can be the same.

[0049] Further, the convex plates 3 are arc-shaped. The arc-shaped convex plates are provided to facilitate fitting with the shape of the plug pin tube 2.

[0050] Such asFigure 3 As shown, in some embodiments, a limiting spring 5 is provided inside the first sleeve 22. The first end of the limiting spring 5 is fixedly connected to the end of the first sleeve 22, and the second end of the limiting spring 5 is fixedly connected to the first limiting post 31.

[0051] Therefore, when the convex plate 3 expands and contracts, the first limiting post 31 can be pulled back by the pre-tightening force of the spring. Of course, the limiting spring 5 can also be other elastic devices.

[0052] In some other embodiments, a bracket 6 is provided at the bottom of the plug pin tube 2, and the bracket 6 is detachably connected to the plug pin tube 2.

[0053] The above setting of the plug pin tube 2 can make the overall structure more stable. The connection between the bracket 6 and the plug pin tube 2 can be achieved through connection methods such as bayonet joints. The bracket 6 being provided at the bottom of the plug pin tube 2 means that the part of the plug pin tube 2 exposed from the post insulator 1 is connected to the bracket 6.

[0054] Furthermore, as Figure 2 shown, on one side of the bracket 6 away from the post insulator 1, a plurality of second sleeves 61 are provided. The plurality of second sleeves 61 are spaced along the circumferential side of the plug pin tube 2. The second sleeves 61 are horizontally arranged and extend towards the central axis direction of the plug pin tube 2. A second limiting post 611 is provided inside the second sleeve 61, and the second limiting post 611 is slidably connected to the second sleeve 61.

[0055] A plurality of second limiting grooves 23 are formed on the outer wall surface of the plug pin tube 2. The plurality of second limiting grooves 23 are spaced along the outer wall surface of the plug pin tube 2. The second limiting post 611 can be engaged with the second limiting groove 23.

[0056] The number of the above-mentioned second sleeves 61 can be two, and the two second sleeves 61 can be symmetrically distributed about the center. The second sleeve 61 and the bracket 6 can be integrally formed or welded. A limiting spring 5 can be provided in the second sleeve 61, and one end of the limiting spring 5 is fixedly welded to the second limiting post 611. Therefore, when the plug pin tube 2 is locked with the post insulator 1, the second limiting post 611 can be engaged into the second limiting groove 23 to further lock and enhance stability. When the post insulator 1 needs to be replaced, after pushing the push rod 4, the finger reversely presses the second limiting post 611 to disengage it from the second limiting groove 23 to release the lock.

[0057] As Figure 4 shown, in the vertical direction, the size of the push rod 4 is larger than the size of the plug pin tube 2.

[0058] The size of the above-mentioned push rod 4 is larger than that of the pin tube 2, so that the push rod 4 can protrude from the end of the pin tube 2, facilitating the pushing of the push rod 4 from the upper part of the pin tube 2. In addition, a second support handle 42 is provided at the top of the push rod 4. Thus, the second support handle 42 can be directly pushed, which is convenient and labor-saving. The first support handle 41 can be the same as the second support handle 42. To further increase the stability of the device, a bayonet, a convex plate 3, a third limit post and a third sleeve structure can be provided on the upper part of the pin tube 2, and their working principles and structures can be the same as those of the first limit post 31 and the first sleeve 22.

[0059] As Figure 5 shown, the present utility model also provides a discrete lightning arrester, which includes the vertical lightning protection insulation structure as described above, including a lightning arrester body 7 and a disconnector 8. A disconnector 8 is provided at the top of the lightning arrester body 7, and one end of the disconnector 8 away from the lightning arrester body 7 is connected to the vertical lightning protection insulation structure. When the post insulator 1 is damaged, it can be repaired separately, which is convenient and fast, and avoids wasting resources due to the overall scrapping of the lightning arrester.

[0060] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0061] The above are only specific embodiments of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vertical lightning protection insulation structure, characterized in that: include: A post insulator (1), wherein the inner wall of the post insulator (1) is provided with a first limiting groove (11), and the first limiting groove (11) is distributed circumferentially along the inner wall of the post insulator (1); a latch tube (2) is provided inside the post insulator (1), and the latch tube (2) extends in a vertical direction and can be slidably connected to the post insulator (1); The side wall of the latch tube (2) is provided with a plurality of bayonet openings, which are spaced apart along the side wall of the latch tube (2); a convex plate (3) is provided on the bayonet opening, and the convex plate (3) protrudes toward the inside of the latch tube (2); a limiting convex block (21) is circumferentially provided on the outer wall of the convex plate (3), and the limiting convex block (21) can be engaged with the first limiting groove (11); A first limiting column (31) is provided on the inner side of the convex plate (3), the first limiting column (31) is arranged horizontally and extends in the direction of the central axis of the latch tube (2); a plurality of first sleeves (22) are provided on the inner wall of the latch tube (2), the plurality of first sleeves (22) are distributed circumferentially along the inner wall of the latch tube (2), the first sleeves (22) are arranged horizontally and extend in the direction of the central axis of the latch tube (2), and the first sleeves (22) are slidably connected to the first limiting column (31); A push rod (4) is provided inside the latch tube (2), and a first support handle (41) is provided at the bottom end of the push rod (4). The first support handle (41) is fixedly connected to the push rod (4), and the first support handle (41) can slide up and down along the inner wall of the latch tube (2).

2. The vertical lightning protection insulation structure according to claim 1, characterized in that: The first sleeve (22) and the first limiting column (31) are arranged in a one-to-one correspondence.

3. The vertical lightning protection insulation structure according to claim 1, characterized in that: The number of the first sleeve (22) and the number of the bayonet are both two.

4. The vertical lightning protection insulation structure according to claim 1, characterized in that: The convex plate (3) is arc-shaped.

5. The vertical lightning protection insulation structure according to claim 1, characterized in that: A limit spring (5) is provided inside the first sleeve (22), a first end of the limit spring (5) is fixedly connected to the end of the first sleeve (22), and a second end of the limit spring (5) is fixedly connected to the first limit column (31).

6. The vertical lightning protection insulation structure according to claim 1, characterized in that: A bracket (6) is provided at the bottom of the latch tube (2), and the bracket (6) is detachably connected to the latch tube (2).

7. The vertical lightning protection insulation structure according to claim 6, characterized in that: A plurality of second sleeves (61) are provided on a side of the bracket (6) away from the post insulator (1), the plurality of second sleeves (61) are spaced apart along the circumference of the latch tube (2), the second sleeves (61) are arranged horizontally and extend in the direction of the central axis of the latch tube (2); a second limiting column (611) is provided in the second sleeve (61), and the second limiting column (611) is slidably connected to the second sleeve (61); The outer wall surface of the latch tube (2) is provided with a plurality of second limiting grooves (23), the plurality of second limiting grooves (23) are distributed at intervals along the outer wall surface of the latch tube (2), and the second limiting column (611) can be snap-fitted with the second limiting groove (23).

8. The vertical lightning protection insulation structure according to claim 1, characterized in that: In the vertical direction, the size of the push rod (4) is larger than the size of the latch tube (2).

9. The vertical lightning protection insulation structure according to claim 8, characterized in that: A second supporting handle (42) is provided at the top end of the push rod (4).

10. A discrete lightning arrester, characterized in that: It comprises a vertical lightning protection insulating structure as described in any one of claims 1 to 9, comprising a lightning arrester body (7) and a disconnector (8), wherein the top of the lightning arrester body (7) is provided with the disconnector (8), and one end of the disconnector (8) away from the lightning arrester body (7) is connected to the vertical lightning protection insulating structure.

Images