A metal oxide arrester for ultra-high voltage and high altitude power stations

Abstract

The present invention discloses a metal oxide arrester for ultra-high voltage and high altitude power station type, which includes an arrester element, an insulating base and an upper cover. The insulating base is installed at the lower end of the arrester element, and the upper cover is installed at the upper end of the arrester element. A wire pressing screw is installed on the top of the upper cover, and a support plate is fixedly installed on the outer wall of the wire pressing screw. The support plate is arranged in a ring structure. A wire pressing assembly is also installed on the wire pressing screw. The wire pressing assembly includes a wire pressing column and an anti-loosening assembly. The cross section of the wire pressing column is arranged in a hexagonal structure. The wire pressing column is threadedly installed on the wire pressing screw, and the anti-loosening assembly is installed inside the wire pressing screw. By adding an anti-loosening mechanism to the structure of the arrester connection wire fixing mechanism, when fixing the connection wire, the connection is tightened by the anti-loosening assembly, so that the connection will not loosen easily, making the arrester more convenient to use.

Description

Technical Field

[0001] The present invention belongs to the technical field of lightning arresters, and particularly relates to a metal oxide lightning arrester for ultra-high voltage and high altitude power stations. Background Art

[0002] A lightning arrester is an electrical appliance used to protect electrical equipment from the harm of high transient overvoltages during lightning strikes, limit the follow-up current time, and often limit the follow-up current amplitude. A lightning arrester is sometimes also called an overvoltage protector or an overvoltage limiter.

[0003] For most existing metal oxide lightning arresters for ultra-high voltage and high altitude power stations, during use, the connecting wires are tightened by nuts. However, in this way, the connection points are prone to looseness after long-term use, which is not conducive to use.

[0004] Therefore, we propose a metal oxide lightning arrester for ultra-high voltage and high altitude power stations to solve the problems existing in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide a metal oxide lightning arrester for ultra-high voltage and high altitude power stations. By adding an anti-loosening mechanism to the structure of the connecting wire fixing mechanism of the lightning arrester, when the connecting wire is fixed by the fixing mechanism, the connection point is tightened by the anti-loosening component, so that the connection point will not easily loosen, making the lightning arrester more conducive to use, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A metal oxide lightning arrester for ultra-high voltage and high altitude power stations includes a lightning protection element, an insulating base, and an upper cover. The insulating base is installed at the lower end of the lightning protection element, the upper cover is installed at the upper end of the lightning protection element, a wire pressing screw is installed on the top of the upper cover, a support plate is fixedly installed on the outer wall of the wire pressing screw, the support plate is arranged in a circular ring structure, a wire pressing component is further installed on the wire pressing screw, the wire pressing component includes a wire pressing column and an anti-loosening component, the cross-section of the wire pressing column is arranged in a hexagonal structure, the wire pressing column is threadedly installed on the wire pressing screw, the anti-loosening component is installed inside the wire pressing screw, the anti-loosening component includes a top pressing plate and a spring, the top pressing plate is slidably installed inside the wire pressing column, and one side of the top pressing plate extends to the outside of the wire pressing column, the spring is arranged on one side of the top pressing plate, and a fixing screw is installed at the bottom of the insulating base.

[0008] Preferably, a fixing groove is opened on one side of the top of the wire pressing column, the cross-section of the fixing groove is arranged in a circular structure, a groove is opened at the bottom of the fixing groove, the groove is arranged in a circular ring structure, and the top pressing plate and the spring are both installed inside the groove.

[0009] Preferably, a cover plate is threadedly mounted on the inner side of the fixing groove, and the cover plate is configured as a cylindrical structure, and the bottom of the cover plate fits with the top of the spring.

[0010] Preferably, a tool groove is provided on one side of the top of the cover plate, and the tool groove is arranged in a hexagonal structure. An external thread is provided on the outer wall of the cover plate, and an internal thread is provided on the inner wall of the fixing groove, and the external thread is matched with the internal thread.

[0011] Preferably, a slide groove is provided at the bottom of the groove, the slide groove is arranged as an annular structure, one side of the slide groove is connected to the outside of the wire pressing column, and the pressing plate is slidably installed on the inner side of the slide groove.

[0012] Preferably, the tightening plate includes a limiting portion and a tightening portion, the limiting portion is configured as an annular structure, the tightening portion is configured as an arc-shaped plate, the tightening portion is configured at the bottom of the limiting portion, and the top of the limiting portion fits with the bottom of the spring.

[0013] Preferably, a first threaded hole is formed at the bottom of the wire pressing column, and the wire pressing screw is arranged inside the first threaded hole.

[0014] Preferably, a support assembly is installed on the outer wall of the insulating base, and the support assembly includes a fixing plate and a support member, the fixing plate is configured as a ring structure, the support member is configured as a N-shaped structure, and the support member is provided in four groups, and the four groups of support members can be detachably installed on the outer wall of the fixing plate.

[0015] Preferably, slots are provided on the outer wall of the fixing plate, and there are four groups of slots. The cross-section of the slots is configured as a rectangular structure, and one side of the support member is fixedly inserted into the inner side of the slots by means of fixing screws.

[0016] Preferably, a second threaded hole is provided at the top of the fixing plate, the second threaded hole passes through the fixing plate, and one end of the second threaded hole passes through a slot, a through hole is provided on one side of the top of the four groups of support members, and the fixing screw is arranged on the inner side of the second threaded hole and the through hole.

[0017] Technical effects and advantages of the present invention: The ultra-high voltage and high altitude power station type metal oxide arrester proposed by the present invention has the following advantages compared with the prior art:

[0018] The present invention arranges an anti-loosening component. When one end of the connecting wire is fixed on the wire pressing screw, the wire pressing column is used to fix the one end of the connecting wire. During the fixing process, the tightening plate of the anti-loosening component tightens the connection, so that the connection will not be loosened easily, making the lightning arrester easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention;

[0020] Figure 2 It is an exploded structural diagram of the wire pressing component and the wire pressing screw of the present invention;

[0021] Figure 3 It is an exploded structural diagram of the wire pressing component of the present invention;

[0022] Figure 4 It is an exploded structural diagram of the support component of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the chute of the present invention.

[0024] In the figure: 1, lightning protection element; 2, insulating base; 3, upper cover; 4, wire pressing screw; 5, support plate; 6, wire pressing component; 601, wire pressing column; 602, anti-loosening component; 6021, top pressing plate; 6022, spring; 6023, limiting part; 6024, top pressing part; 7, fixing screw; 8, fixing groove; 9, groove; 10, cover plate; 11, tool groove; 12, chute; 13, first threaded hole; 14, support component; 1401, fixing plate; 1402, support member; 1403, slot; 1404, fixing screw; 15, second threaded hole; 16, through hole. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] The present invention provides as Figures 1-5A metal oxide arrester for ultra-high voltage and high altitude power station type as shown, includes a lightning protection element 1, an insulating base 2 and an upper cover 3. The insulating base 2 is installed at the lower end of the lightning protection element 1, and the upper cover 3 is installed at the upper end of the lightning protection element 1. A pressure screw 4 is installed on the top of the upper cover 3, and the pressure screw 4 is used to install one end of the connecting wire. A support plate 5 is fixedly installed on the outer wall of the pressure screw 4, and the support plate 5 is used to cooperate with the pressure component 6 to fix one end of the connecting wire. The support plate 5 is arranged in a ring structure. A pressure component 6 is also installed on the pressure screw 4, and the pressure component 6 is used to press one end of the connecting wire. The pressure component 6 includes a pressure column 601 and an anti-loosening component 602. The pressure column 601 is used to press the end of the connecting wire, and the anti-loosening component 602 is used to prevent the connection of the connecting wire from loosening. The cross-section of the pressure column 601 is set as a hexagonal structure, and the pressure column 601 is threadedly installed on the pressure screw 4. The anti-loosening component 602 is installed inside the pressure screw 4. The anti-loosening component 602 includes a top plate 6021 and a spring 6022. The cooperation of the top plate 6021 and the spring 6022 can top the connection of the connecting wire, so as to prevent the connection from loosening. The top plate 6021 is slidably installed inside the pressure column 601, and one side of the top plate 6021 extends to the outside of the pressure column 601. The spring 6022 is arranged on one side of the top plate 6021. A fixing screw 7 is installed at the bottom of the insulating base 2, and the fixing screw 7 is used to install the arrester.

[0027] A fixing groove 8 is opened on one side of the top of the pressure column 601. The cross-section of the fixing groove 8 is set as a circular structure. A groove 9 is opened at the bottom of the fixing groove 8, and the groove 9 is set as a ring structure. The top plate 6021 and the spring 6022 are both installed inside the groove 9. The fixing groove 8 and the groove 9 cooperate to install the anti-loosening component 602.

[0028] A cover plate 10 is threadedly installed inside the fixing groove 8. The cover plate 10 is set as a cylinder structure. The bottom of the cover plate 10 is in contact with the top of the spring 6022. The cover plate 10 is used to seal the port of the fixing groove 8.

[0029] A tool groove 11 is opened on one side of the top of the cover plate 10. The tool groove 11 is used to cooperate with tools to disassemble and assemble the cover plate 10. The tool groove 11 is set as a hexagonal structure. An external thread is provided on the outer wall of the cover plate 10, and an internal thread is provided on the inner wall of the fixing groove 8. The external thread and the internal thread are matched.

[0030] A sliding groove 12 is opened at the bottom of the groove 9. The sliding groove 12 is set as a ring structure. One side of the sliding groove 12 communicates to the outside of the pressure column 601. The top plate 6021 is slidably installed inside the sliding groove 12. The sliding groove 12 is used to slidably install the top plate 6021.

[0031] The tightening plate 6021 includes a limiting portion 6023 and a tightening portion 6024. The limiting portion 6023 is configured as an annular structure, and the tightening portion 6024 is configured as an arc-shaped plate. The tightening portion 6024 is arranged at the bottom of the limiting portion 6023, and the top of the limiting portion 6023 is fitted with the bottom of the spring 6022. The limiting portion 6023 is used to limit the tightening portion 6024, and the tightening portion 6024 is used to tighten the end of the connecting line.

[0032] A first threaded hole 13 is formed at the bottom of the crimping post 601 , and the crimping screw 4 is arranged inside the first threaded hole 13 . The first threaded hole 13 is arranged to facilitate the crimping post 601 to be threadedly installed on the crimping screw 4 .

[0033] A support assembly 14 is installed on the outer wall of the insulating base 2. The support assembly 14 is used to support the lightning arrester to prevent the lightning arrester from tilting when subjected to external force. The support assembly 14 includes a fixed plate 1401 and a support member 1402. The fixed plate 1401 is configured as a ring structure, and the support member 1402 is configured as a 乁-shaped structure. The support member 1402 is provided with four groups, and the four groups of support members 1402 can be detachably installed on the outer wall of the fixed plate 1401. The fixed plate 1401 is used to install the support member 1402, and the support member 1402 is used to support the lightning arrester.

[0034] Slots 1403 are provided on the outer wall of the fixing plate 1401. There are four groups of slots 1403. The cross-section of the slots 1403 is set as a rectangular structure. One side of the support member 1402 is fixedly inserted into the inner side of the slots 1403 by fixing screws 1404. The slots 1403 and the fixing screws 1404 are used together to install the support member 1402.

[0035] A second threaded hole 15 is provided at the top of the fixing plate 1401, and the second threaded hole 15 passes through the fixing plate 1401, and one end of the second threaded hole 15 passes through the slot 1403. A through hole 16 is provided on one side of the top of the four groups of support members 1402, and a fixing screw 1404 is arranged on the inner side of the second threaded hole 15 and the through hole 16. The second threaded hole 15 and the through hole 16 are used to cooperate with the fixing screw 1404 to fix the position of the support member 1402.

[0036] Working principle or structural principle: A wire pressing screw 4 is installed on the top of the upper cover 3. A support plate 5 is fixedly installed on the outer wall of the wire pressing screw 4. The support plate 5 is arranged in an annular structure. A wire pressing assembly 6 is also installed on the wire pressing screw 4. The wire pressing assembly 6 includes a wire pressing column 601 and an anti-loosening assembly 602. The cross-section of the wire pressing column 601 is arranged in a hexagonal structure. The wire pressing column 601 is threadedly installed on the wire pressing screw 4. The anti-loosening assembly 602 is installed inside the wire pressing screw 4. The anti-loosening assembly 602 includes a top pressing plate 6021 and a spring 6022. The top pressing plate 6021 is arranged in an annular structure. The top pressing plate 6021 is slidably installed inside the wire pressing column 601, and one side of the top pressing plate 6021 extends to the outside of the wire pressing column 601. The spring 6022 is arranged on one side of the top pressing plate 6021. A fixing screw 7 is installed at the bottom of the insulating base 2. When fixing the connecting wire, first, one end of the connecting wire is sleeved on the wire pressing screw 4. Then, the wire pressing column 601 is installed on the wire pressing screw 4, and the wire pressing column 601 is rotated to make the wire pressing column 601 approach the end of the connecting wire until the end of the connecting wire is pressed tightly. During the pressing process, the top pressing plate 6021 will first contact the end of the connecting wire. Then, the top pressing plate 6021 will retract into the groove 9 under extrusion, and the spring 6022 is in a compressed state, so that the connection can be tightly pressed and the connection will not loosen easily, thus fixing one end of the connecting wire.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal oxide lightning arrester for ultra-high voltage and high altitude power stations, comprising a lightning arrester element (1), an insulating base (2) and an upper cover (3), characterized in that: The insulating base (2) is installed at the lower end of the lightning protection element (1), the upper cover (3) is installed at the upper end of the lightning protection element (1), a wire pressing screw (4) is installed on the top of the upper cover (3), a support plate (5) is fixedly installed on the outer wall of the wire pressing screw (4), the support plate (5) is arranged in an annular structure, a wire pressing assembly (6) is also installed on the wire pressing screw (4), the wire pressing assembly (6) includes a wire pressing column (601) and an anti-loosening assembly (602), the cross section of the wire pressing column (601) is arranged in a hexagonal structure, the wire pressing column (601) is threadedly installed on the wire pressing screw (4), and the anti-loosening assembly (602) is arranged in an annular structure. 02) is installed on the inner side of the wire pressing screw (4), the anti-loosening assembly (602) includes a top tightening plate (6021) and a spring (6022), the top tightening plate (6021) is slidably installed on the inner side of the wire pressing column (601), and one side of the top tightening plate (6021) extends to the outside of the wire pressing column (601), the spring (6022) is arranged on one side of the top tightening plate (6021), and a fixing screw (7) is installed on the bottom of the insulating base (2); a fixing groove (8) is opened on one side of the top of the wire pressing column (601), the cross section of the fixing groove (8) is set to a circular structure, and the bottom of the fixing groove (8) is A groove (9) is provided, the groove (9) is configured as an annular structure, and the tightening plate (6021) and the spring (6022) are both installed on the inner side of the groove (9); a cover plate (10) is installed on the inner side of the fixing groove (8) by thread, the cover plate (10) is configured as a cylindrical structure, and the bottom of the cover plate (10) is in contact with the top of the spring (6022); a tool groove (11) is provided on one side of the top of the cover plate (10), and the tool groove (11) is configured as a hexagonal structure, an external thread is provided on the outer wall of the cover plate (10), and an internal thread is provided on the inner wall of the fixing groove (8), and the external thread and the internal thread are matched. The groove (9) is provided with a slide groove (12) at the bottom thereof, the slide groove (12) being provided with an annular structure, one side of the slide groove (12) being connected to the outside of the wire pressing column (601), and the pressing plate (6021) being slidably mounted on the inner side of the slide groove (12); the pressing plate (6021) comprising a limiting portion (6023) and a pressing portion (6024), the limiting portion (6023) being provided with an annular structure, the pressing portion (6024) being provided with an arc-shaped plate, the pressing portion (6024) being provided at the bottom of the limiting portion (6023), and the top of the limiting portion (6023) being in contact with the bottom of the spring (6022).

2. The metal oxide lightning arrester for ultra-high voltage and high altitude power stations according to claim 1, characterized in that: A first threaded hole (13) is formed at the bottom of the wire pressing column (601), and the wire pressing screw (4) is arranged inside the first threaded hole (13).

3. The metal oxide lightning arrester for ultra-high voltage and high altitude power stations according to claim 1, characterized in that: A support assembly (14) is mounted on the outer wall of the insulating base (2), the support assembly (14) comprising a fixing plate (1401) and a support member (1402), the fixing plate (1401) being arranged in an annular structure, the support member (1402) being arranged in a 鹁-shaped structure, four groups of support members (1402) being arranged, and the four groups of support members (1402) being detachably mounted on the outer wall of the fixing plate (1401).

4. The metal oxide lightning arrester for ultra-high voltage and high altitude power stations according to claim 1, characterized in that: On the outer wall of the fixing plate (1401), there are four groups of slots (1403) opened. The cross-section of the slots (1403) is set as a rectangular structure, and one side of the support member (1402) is fixedly inserted into the inner side of the slots (1403) through fixing screws (1404).

5. The metal oxide lightning arrester for ultra-high voltage and high altitude power stations according to claim 1, characterized in that: On the top of the fixing plate (1401), there is a second threaded hole (15) opened. The second threaded hole (15) penetrates through the fixing plate (1401), and one end of the second threaded hole (15) passes through the slots (1403). On one side of the top of the four groups of support members (1402), there are through holes (16) opened, and the fixing screws (1404) are arranged inside the second threaded hole (15) and the through holes (16).

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