CN218603158U

CN218603158U - Lightning arrester

Info

Publication number: CN218603158U
Application number: CN202222405660.0U
Authority: CN
Inventors: 张恒伟; 刘晓敏
Original assignee: Shanxi Xilongchi Pumped Storage Power Station Co ltd; State Grid Xinyuan Co Ltd
Current assignee: Shanxi Xilongchi Pumped Storage Power Station Co ltd; State Grid Xinyuan Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-03-10
Anticipated expiration: 2032-09-09

Abstract

The application provides a lightning arrester. The arrester includes: the lightning arrester comprises a lightning arrester body, a mounting plate, a mounting frame, a threaded rod, a sliding block and a clamping assembly; two vertical mounting frames are fixed on the mounting plate at intervals; the side walls, close to each other, of the two mounting frames are rotatably connected with the threaded rods; the two sliding blocks are arranged on the threaded rod in a threaded fit mode, and the threaded rod can enable the two sliding blocks to approach each other based on transmission of the threaded fit when rotating; one ends of the two sliding blocks, which are far away from the mounting plate, are fixedly connected with clamping assemblies; the clamping assembly is used for clamping the lightning arrester body. The scheme of this application has optimized the structure of arrester, has solved the partial structure of traditional arrester and has taken place not hard up problem easily, and dismouting and change easy operation.

Description

Lightning arrester

Technical Field

The application relates to the technical field of electrical equipment, in particular to a lightning arrester.

Background

The lightning arrester is arranged on the power line, when lightning strikes, the high voltage of lightning waves enables the piezoresistor of the lightning arrester to break down, lightning current flows into the ground through the piezoresistor, and the voltage on the power line can be controlled within a safety range, so that the safety of electrical equipment is protected.

The arrester applied to electrical equipment is often used in thermal power plants, however, the arrester in the related art is complex in disassembly and assembly operation, inconvenient in replacement and maintenance and poor in practicability.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application aims to provide an arrester to solve or partially solve the above problems.

The application provides a lightning arrester, includes:

the lightning arrester comprises a lightning arrester body, a mounting plate, a mounting frame, a threaded rod, a sliding block and a clamping assembly;

two vertical mounting frames are fixed on the mounting plate at intervals;

the threaded rods are rotatably connected to the side walls, close to each other, of the two mounting frames;

the two sliding blocks are arranged on the threaded rod in a threaded fit mode, and the threaded rod can enable the two sliding blocks to approach each other based on transmission of the threaded fit when rotating;

one ends of the two sliding blocks, which are far away from the mounting plate, are fixedly connected with the clamping assembly;

the clamping assembly is used for clamping the lightning arrester body.

Optionally, the lightning arrester further includes two horizontal guide rails, the horizontal guide rails are fixedly connected to the mounting frame and slidably connected to the sliding blocks, and the horizontal guide rails are used for guiding the movement of the sliding blocks.

Optionally, each sliding block is arranged on the threaded rod through a nut block in a threaded fit manner.

Optionally, a forward thread and a reverse thread are arranged on the threaded rod, and the two nut blocks are arranged on the threaded rod through the forward thread and the reverse thread in a thread fit manner respectively.

Optionally, the clamping assembly includes two clamping blocks, and the two clamping blocks are respectively and fixedly connected to the two ends of the sliding blocks, which are far away from the mounting plate, and are used for being close to each other along with the movement of the sliding blocks to clamp the lightning arrester body.

Optionally, the two clamping blocks are provided with clamping grooves, and the shapes of the clamping grooves are adapted to the clamped portion of the arrester body, so that the arrester body is stably clamped.

Optionally, one end of the threaded rod passes through the mounting bracket.

Optionally, one end of the threaded rod, which penetrates through the mounting frame, is provided with a screwing head, and the screwing head is used for driving the threaded rod to rotate.

Optionally, a fixing bolt is arranged on the screwing head, and the fixing bolt can penetrate through the screwing head and tightly abut against the mounting frame to lock the position of the threaded rod.

Optionally, a rubber plate is arranged at a position on the mounting frame corresponding to the screwing head, and the rubber plate is used for extruding the fixing bolt to realize the stable limit of the screwing head.

From the above can see out, the arrester that this application provided, the interval is fixed with two vertically mounting brackets and installs the arrester body on the mounting panel, and the threaded rod of connecting on the mounting bracket makes to be close to each other in two sliders of threaded rod based on screw-thread fit's transmission when rotating to make the fixed centre gripping subassembly of slider one end carry out the centre gripping to the arrester body. Compare in traditional arrester, the scheme of this application has optimized the structure of arrester, has solved the partial structure of arrester among the correlation technique and has taken place not hard up problem easily, and dismouting and change easy operation.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the related art, the drawings needed to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a lightning arrester according to an embodiment of the present application;

FIG. 2 is a cross-sectional schematic view of a clamping assembly of an embodiment of the present application;

fig. 3 is a partially enlarged schematic view of a lightning arrester according to an embodiment of the present application.

In the figure, 100 lightning arresters; 10 a lightning arrester body; 20, mounting a plate; 30, mounting a frame; 40 threaded rods; 50 sliding blocks; 60 a clamping assembly; 70 horizontal guide rails; 80 nut block; 21 mounting a bolt; 31 a rubber plate; 41 positive thread; 42 reverse threads; 43 screwing head; 61 a clamping block; 62 a clamping groove; 431 fix the bolt.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should have a general meaning as understood by those having ordinary skill in the art to which the present application belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The zinc oxide lightning arrester is a new type lightning arrester developed in the seventies, and is mainly formed from zinc oxide piezoresistors, and every piezoresistor has its correspondent certain switching voltage, i.e. voltage-sensitive voltage. Under normal operating voltage (i.e., less than the varistor voltage), the varistor value is large, corresponding to an insulating state; under the action of impulse voltage (i.e. greater than voltage), the voltage dependent resistor is broken down at a low value, which is equivalent to a short circuit state. And the voltage dependent resistor can recover the insulation state after being struck, and when the voltage higher than the voltage dependent voltage is withdrawn, the voltage dependent resistor recovers the high-resistance state.

Therefore, after the zinc oxide lightning arrester is installed on a power line, when lightning strikes, the high voltage of lightning waves breaks down the piezoresistor of the lightning arrester, lightning current flows into the ground through the piezoresistor, and the voltage on the power line can be controlled within a safe range, so that the safety of electrical equipment is protected.

The zinc oxide arrester is often used in thermal power plants for the use of electrical lightning arresters, however, the arrester structure in the related art is complicated, and the dismouting complex operation, inconvenient change and maintenance, the practicality is relatively poor.

In view of this, this application embodiment provides an arrester, interval is fixed with two perpendicular mounting brackets and installs the arrester body on the mounting panel of arrester, and the threaded rod of connecting on the mounting bracket makes two sliders that set up in the threaded rod be close to each other based on screw-thread fit's transmission when rotating to make the fixed centre gripping subassembly of slider one end carry out the centre gripping to the arrester body. Compare in traditional arrester, the scheme of this application has optimized the structure of arrester, has solved the partial structure of arrester among the correlation technique and has taken place not hard up problem easily, and dismouting and change easy operation.

Referring to fig. 1, a schematic view of a surge arrester 100 of an embodiment of the present application. As shown in fig. 1, an arrester 100 provided by the embodiment of the present application may include: arrester body 10, mounting plate 20, mounting bracket 30, threaded rod 40, slider 50 and clamping assembly 60.

In specific implementation, two vertical mounting frames 30 can be fixed on the mounting plate 20 at intervals, and the threaded rods 40 can be rotatably connected to the side walls of the two mounting frames 30 which are close to each other.

In one embodiment, the two sliding blocks 50 may be disposed on the threaded rod 40 in a threaded fit, and the threaded rod 40 may move the two sliding blocks 50 toward each other based on the threaded fit.

In some alternative embodiments, the surge arrester 100 may further include two nut blocks 80. Specifically, the nut block 80 may be fixedly installed at a lower portion of each sliding block 50, and thus, each sliding block 50 is disposed on the threaded rod 40 through a thread fit of the nut block 80, so as to drive the two sliding blocks 50 to move in the rotating process of the threaded rod 40, so that the two sliding blocks 50 are close to each other.

In some alternative embodiments, the threaded rod 40 is provided with a forward thread 41 and a reverse thread 42, and the two nut blocks 80 are respectively provided on the threaded rod 40 through the forward thread 41 and the reverse thread 42 in a threaded fit. Specifically, the forward threads 41 are engaged with one nut block 80, and the reverse threads 42 are engaged with the other nut block 80. Thus, during the rotation of the threaded rod 40, the two nut blocks 80 move and approach each other due to the interaction of the forward threads 41 and the reverse threads 42, thereby causing the two sliders 50 to approach each other based on the transmission of the screw engagement.

In some embodiments, a clamping assembly 60 is fixedly attached to each end of the two slides 50 distal from the mounting plate 20. Specifically, by the movement of the two sliders 50 approaching each other, the two clamping assemblies 60 move, so that the clamping assemblies 60 clamp the arrester body 10 to fix the arrester body 10.

Further, fig. 2 shows a cross-sectional schematic view of a clamping assembly 60 of an embodiment of the present application. As shown in fig. 2, the clamping assembly 60 may include two clamping blocks 61, and the two clamping blocks 61 are fixedly connected to ends of the two sliding blocks 50 away from the mounting plate 20 respectively, for approaching each other to clamp the lightning arrester body 10 along with the movement of the sliding blocks 50.

In some alternative embodiments, the clamping grooves 62 are provided on both clamping blocks 61. Specifically, the shape of the clamping groove 62 can be adapted to the clamped portion of the arrester body 10. In this way, in response to the two clamping blocks 61 approaching each other by the movement of the slider 50 to clamp the arrester body 10, the corresponding clamping groove 62 on each clamping block 61 can achieve further fixing of the arrester body 10, thereby achieving stable clamping.

Alternatively, one end of the threaded rod 40 may pass through the mounting bracket 30. In this way, a screw head 43 can be provided at the end of the threaded rod 40 that passes through the mounting frame 30, which screw head 43 can be used to rotate the threaded rod 40. Like this, in response to twist and revolve twisting head 43, the rotation of driving threaded rod 40 through the rotation of twisting head 43 to drive two nut blocks 80 under the effect of forward screw thread 41 and reverse screw thread 42 and be close to each other, thereby drive two sliders 50 and be close to each other, and then two grip blocks 61 are close to each other in order to carry out the centre gripping to arrester body 10, and the firm centre gripping to arrester body 10 is realized to the last centre gripping groove 62 that corresponds of every grip block 61. It will be appreciated that the other end of the threaded rod 40 needs to pass through the mounting bracket 30, and is not limited in this embodiment.

Referring to fig. 3, a partially enlarged schematic view of the lightning arrester 100 according to the embodiment of the present application is shown. As shown in fig. 3, a fixing bolt 431 may be further provided on the screw head 43, and a rubber plate 31 may be further provided on the mounting bracket 30. Wherein the fixing bolt 431 can be inserted in the screwing head 43 by snap-screwing, and is specifically configured to pass through the screwing head 43 and be pressed against the mounting frame 30 so as to lock the position of the threaded rod 40; the rubber plate 31 may be disposed on the mounting frame 30 at a position corresponding to the screwing head 43, and is specifically configured to be pressed against the fixing bolt 431 to achieve stable limitation of the screwing head 43. In this way, in response to the clamping assembly 60 (the clamping block 61 and the clamping groove 62) clamping the arrester body 10, the fixing bolt 431 on the screwing head 43 is tightened to press the fixing bolt 431 and the rubber plate 31 against each other, so that the positions of the screwing head 43 and the threaded rod 40 are restricted, thereby playing a role of preventing looseness.

Additionally, in some alternative embodiments, the arrester 100 can include two horizontal rails 70. As shown in fig. 1, a horizontal rail 70 is fixedly connected to the mounting frame 30 and slidably connected to the sliding block 50, and the horizontal rail 70 is used for guiding the movement of the sliding block 50.

In addition, as shown in fig. 1, in some alternative embodiments, a plurality of mounting bolts 21 may be inserted into the mounting plate 20, so that the lightning arrester 100 can be removed and replaced by the plurality of mounting bolts 21.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the context of the present application, technical features in the above embodiments or in different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application described above, which are not provided in detail for the sake of brevity.

While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made without departing from the spirit or scope of the embodiments of the present application are intended to be included within the scope of the claims.

Claims

1. An arrester, comprising: the lightning arrester comprises a lightning arrester body, a mounting plate, a mounting frame, a threaded rod, a sliding block and a clamping assembly;

two vertical mounting frames are fixed on the mounting plate at intervals;

the side walls, close to each other, of the two mounting frames are rotatably connected with the threaded rods;

the two sliding blocks are arranged on the threaded rod in a threaded fit mode, and the threaded rod can enable the two sliding blocks to approach each other based on transmission of the threaded fit when the threaded rod rotates;

one ends of the two sliding blocks, which are far away from the mounting plate, are fixedly connected with the clamping assemblies;

the clamping assembly is used for clamping the lightning arrester body.

2. A lightning arrester according to claim 1 further comprising two horizontal rails fixedly connected to the mounting bracket and slidably connected to the slider for guiding movement of the slider.

3. A lightning arrester as claimed in claim 1 wherein each slider is arranged on the threaded rod by a nut block in threaded engagement.

4. A lightning arrester according to claim 3, characterized in that the threaded rod is provided with a forward thread and a reverse thread, and the two nut blocks are respectively provided on the threaded rod by the forward thread and the reverse thread in a thread fit.

5. The arrester of claim 1 wherein the clamping assembly comprises two clamping blocks fixedly connected to respective ends of the two sliding blocks remote from the mounting plate for moving toward each other to clamp the arrester body in response to movement of the sliding blocks.

6. A lightning arrester according to claim 5, characterized in that clamping grooves are provided on both of the clamping blocks, the clamping grooves being shaped to fit the clamped portion of the lightning arrester body to achieve a stable clamping of the lightning arrester body.

7. A lightning arrester as claimed in claim 1 wherein one end of the threaded rod passes through the mounting bracket.

8. The arrester of claim 7 wherein the threaded rod is provided with a screw head at an end thereof that extends through the mounting bracket, the screw head being configured to rotate the threaded rod.

9. The arrester of claim 8 wherein the screw head is provided with a securing bolt that can pass through the screw head and tighten against the mounting bracket to lock the position of the threaded rod.

10. The arrester of claim 9 wherein a rubber plate is disposed on the mounting bracket at a position corresponding to the screwing head, the rubber plate being adapted to press against the fixing bolt to firmly limit the screwing head.