CN115240937A - Zinc oxide lightning arrester - Google Patents
Zinc oxide lightning arrester Download PDFInfo
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- CN115240937A CN115240937A CN202211077472.8A CN202211077472A CN115240937A CN 115240937 A CN115240937 A CN 115240937A CN 202211077472 A CN202211077472 A CN 202211077472A CN 115240937 A CN115240937 A CN 115240937A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/001—Mass resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
- H01C7/108—Metal oxide
- H01C7/112—ZnO type
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Abstract
The invention belongs to the technical field of lightning arresters, and particularly relates to a zinc oxide lightning arrester which comprises an insulator, a first connecting piece, a second connecting piece, a third connecting piece, a connecting pin shaft, a connecting clamping piece, a fourth connecting piece and a lightning-arrest assembly. When the lightning protection component is disassembled or replaced, the lightning protection component can be taken down in a traditional mode, then the damaged lightning protection component unit is disassembled, and the bolt connected with the connecting piece or the third connecting electric piece is loosened, namely the lightning protection component unit is separated from the lightning protection component; the tightening bolts in the corresponding lightning protection component units are loosened, and the electric wires are pulled out, namely, the lightning arrester designed by the invention is convenient to replace when the lightning protection component units have faults.
Description
Technical Field
The invention belongs to the technical field of lightning arresters, and particularly relates to a zinc oxide lightning arrester.
Background
The zinc oxide arrester is an arrester with good protection performance. The current flowing through the lightning arrester is extremely small when the normal working voltage is achieved by utilizing the good nonlinear volt-ampere characteristic of zinc oxide; when overvoltage acts, the resistance drops sharply, and the energy of the overvoltage is released, so that the protection effect is achieved. The difference between the arrester and the traditional arrester is that it has no discharge gap and utilizes the non-linear characteristic of zinc oxide to play the role of current leakage and breaking.
The drop-out arrester is manufactured by further optimization on the basis of the distribution type zinc oxide arrester, and is a novel arrester which is deeply developed by combining the characteristics of the zinc oxide arrester. The drop-out arrester is matched with a drop-out mechanism of the drop-out fuse, is arranged in the drop-out mechanism and is combined with the drop-out fuse. Under the state of no power failure, the drop-out fuse can be detected, maintained and replaced by the operating rod, so that the maintenance work of maintenance personnel can be efficiently carried out, and the lightning arrester is one of the most advanced lightning arrester products at present.
The zinc oxide arrester is widely applied to a voltage class power grid below 10KV, and is a common lightning protection device mainly used for preventing the electrical equipment of a transformer substation from being damaged by lightning waves. The linear voltage-current transformer has the advantages of non-linear voltage-current characteristic, low manufacturing cost, no clearance, no follow current, large through-current capacity and stable performance. However, accidents such as breakdown and explosion occur in some cases.
Common failures are mainly due to the following reasons:
1. the sealing was poor.
2. And aging the internal valve plate.
For the drop-out arrester, when the fault occurs, the thermal explosion device can explode to enable the arrester to leave the circuit, so that people can observe the fault of the arrester, and further danger is prevented; however, for areas with multiple lightning strokes, when fault thermal explosion occurs, the circuit loses the lightning protection function; the existing method is to connect the lightning arresters in parallel, so that other lightning arresters can work after one lightning arrester breaks down and leaves the line, but the lightning arresters are connected in parallel, so that the whole size of the lightning arresters is large, the occupied space is large, the lightning arresters are not easy to arrange, and particularly when old lines are improved, a plurality of lightning arresters in parallel cannot be installed on an original lightning arrester mounting rack, and the transformation is inconvenient.
The invention designs the lightning arrester with small installation mode and space similar to the original single lightning arrester to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
a zinc oxide arrester comprises an insulator, a first connecting piece, a second connecting piece, a third connecting piece, a connecting pin shaft, a connecting fastener, a fourth connecting piece and a lightning protection assembly, wherein a switch connecting piece is arranged on the inner side of one end, far away from the first connecting piece, of the second connecting piece in a swinging mode through a swinging shaft, and a first clamping groove and a second clamping groove are formed in the inner side of one end, far away from the second connecting piece, of the switch connecting piece; and a plate spring is arranged between the switch connecting piece and the second connecting electric sheet.
The lightning protection component comprises a lightning protection component unit and an insulating connecting piece connected with the lightning protection component unit.
The lightning protection assembly unit comprises a first conductive column, a first insulating sleeve, a thermal explosion device, a spring, a second insulating sleeve, a resistor assembly, a second conductive column and a third insulating sleeve, wherein the resistor assembly consists of an inner side resistor disc and an umbrella-shaped insulating layer; the upper end and the lower end of the resistor component are respectively provided with a second conductive column, the outer side of the second conductive column at the lower side is provided with a third insulating sleeve, and the outer side of the second conductive column at the upper side is provided with a second insulating sleeve; the thermal explosion device is arranged on the upper side of the resistor assembly and is electrically connected with the resistor disc; a first conductive column is arranged on the upper side of the thermal explosion device, and a first insulating sleeve is arranged on the outer side of the first conductive column; and a spring is arranged between the first insulating sleeve and the second insulating sleeve, is a compression spring and has pre-pressure.
The first insulating sleeve nest in the lightning protection component unit positioned at the lower side in the upper and lower adjacent lightning protection component units is connected with the third insulating sleeve in the lightning protection component unit positioned at the upper side through a connecting piece.
The third connecting electric piece is arranged at the lower side of the third insulating sleeve in the lowest lightning protection component unit.
The first conductive column in the lightning protection component unit positioned on the uppermost side is matched with the first clamping groove and the second clamping groove in the switch connecting piece.
The first conductive columns in two adjacent lightning protection component units are connected through electric wires; two second conductive columns positioned on the lower side of the resistance component in two adjacent lightning protection component units are connected through an electric wire.
Preferably, a first pull ring is mounted on the switch connecting piece.
As preferred scheme, all fixed mounting has an elasticity electric piece in first draw-in groove and the second draw-in groove, and the upper end that is located the first conductive post in the lightning protection component unit of the top is protruding upwards and has the sphere.
Preferably, two limit blocks are fixedly mounted on the inner side of the second connecting electric piece, and the two limit blocks are positioned on two sides of the swinging shaft to limit the swinging of the switch connecting piece.
Preferably, the upper end and the lower end of the connecting piece are provided with two inwards concave circular grooves, the first insulating sleeve in the lightning protection assembly unit positioned on the lower side in the upper and the lower adjacent lightning protection assembly units is nested in the inner groove at the lower end of the connecting piece, the flange plate of the first insulating sleeve is fixedly connected with the connecting piece through a bolt, the third insulating sleeve in the lightning protection assembly unit positioned on the upper side is nested in the inner groove at the upper end of the connecting piece, and the flange plate of the third insulating sleeve is fixedly connected with the connecting piece through a bolt.
Preferably, a flange is arranged on the outer side of the second insulating sleeve, a flange is arranged on the outer side of the first insulating sleeve, three pull rods are uniformly and fixedly mounted on the lower side of the flange on the outer side of the first insulating sleeve in the circumferential direction, and the lower ends of the pull rods penetrate through the flange on the outer side of the second insulating sleeve; a spring is arranged between the lower end of the pull rod and the flange plate on the outer side of the second insulating sleeve.
Preferably, each pull rod is fixedly provided with a limiting ring, and the limiting ring is positioned between the first insulating sleeve and the second insulating sleeve.
Preferably, a sealing sleeve is mounted on the outer side of the thermal explosion device.
Preferably, a second pull ring is fixedly mounted on the outer side of the first insulating sleeve in the uppermost lightning protection component unit.
As a preferable scheme, conductive connecting sheets are installed on the outer sides of the first conductive column and the second conductive column, the first conductive columns in two adjacent lightning protection assembly units are connected through an electric wire, and a fastening bolt capable of pressing the electric wire onto the corresponding conductive connecting sheet is installed on the corresponding first insulating sleeve; two second conductive columns positioned on the lower side of the resistance component in the two adjacent lightning protection component units are connected through an electric wire, and a corresponding third insulating sleeve is provided with an upper bolt capable of pressing the electric wire onto the corresponding conductive connecting sheet.
Compared with the prior art, the invention has the advantages that:
1. in the invention, the positive and negative electrodes of two adjacent lightning protection component units are respectively connected with the positive electrode and the negative electrode through wires, so that the adjacent lightning protection component units are in a parallel connection state; in the using process, if a fault occurs, the lightning protection component unit loses the function after the thermal explosion device in one lightning protection component unit in the lightning protection component is broken, and the lightning protector designed by the invention can also play a lightning protection role through other lightning protection component units under the condition of no replacement; although the mode that other parallel-connected lightning arresters continue to play a lightning protection role after the lightning arrester designed by the invention breaks down is the same as that of the traditional lightning arrester, compared with the parallel-connected mode of the traditional lightning arrester, the parallel-connected mode realized by the structural arrangement mode of the head and the tail of the lightning arrester designed by the invention has large occupied space and is easy to arrange; even if the old line is improved, the installation is easy, and the installation point is the same as the installation point of the traditional drop-out arrester.
2. When the thermal explosion device in one of the lightning protection component units is broken, the whole lightning protection component can swing downwards by an angle, and a worker can judge whether the lightning protection component unit fails by checking whether the lightning protection component swings relative to the initial state, namely the parallel lightning protection device designed by the invention also has the beneficial effect of convenient observation.
3. When the lightning protection component is disassembled or replaced, the lightning protection component can be taken down in a traditional mode, then the damaged lightning protection component unit is disassembled, and the bolt connected with the connecting piece or the third connecting electric piece is loosened, namely the lightning protection component unit is separated from the lightning protection component; the tightening bolts in the corresponding lightning protection component units are loosened, and the electric wires are pulled out, namely, the lightning arrester designed by the invention is convenient to replace when the lightning protection component units have faults.
Drawings
Fig. 1 is a schematic view of the overall component distribution.
Fig. 2 is an external view of the entire part.
Fig. 3 is a schematic view of a switch connector installation.
Fig. 4 is a schematic diagram of the wire distribution.
Fig. 5 is a schematic view of the lightning protection member unit installation.
Fig. 6 is a schematic view of a lightning protection assembly unit structure.
Fig. 7 is a schematic view of a thermal detonator installation.
Fig. 8 is a schematic view of a parallel installation of arresters.
Fig. 9 is a schematic view of the connection of the electrical wire and the conductive post.
Number designation in the figures: 1. an insulator; 2. a first connection pad; 3. a second connecting electric piece; 4. a plate spring; 5. a switch connector; 6. a lightning protection component unit; 7. a third connecting electric piece; 8. connecting a pin shaft; 9. connecting the clamping piece; 10. a fourth connecting electric sheet; 11. an electric wire; 12. a first card slot; 13. a second card slot; 14. an elastic electric sheet; 15. a first pull ring; 16. a swing shaft; 17. a limiting block; 18. a second tab; 19. a first conductive post; 20. a first insulating sleeve; 21. a thermal blaster; 22. a sealing sleeve; 23. a limiting ring; 24. a pull rod; 25. a spring; 26. a second insulating sleeve; 27. a resistance component; 28. a second conductive pillar; 29. a third insulating sleeve; 30. tightening the bolt; 31. a connecting member; 32. a lightning protection assembly; 33. an umbrella-shaped insulating layer; 34. and a conductive connecting sheet.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
A zinc oxide arrester is shown in figures 1 and 2 and comprises an insulator 1, a first connecting piece 2, a second connecting piece 3, a third connecting piece 7, a connecting pin shaft 8, a connecting clamping piece 9, a fourth connecting piece 10 and an arrester assembly 32, wherein one end of the first connecting piece 2 is fixedly installed at the upper end of the insulator 1 through a bolt, the other end of the first connecting piece 2 is fixedly provided with the inverted U-shaped second connecting piece 3 through a bolt, as shown in figure 3, the inner side, away from one end of the first connecting piece 2, of the second connecting piece 3 is provided with a switch connecting piece 5 in a swinging mode through a swinging shaft 16, and a first pull ring 15 is installed on the switch connecting piece 5; a first clamping groove 12 and a second clamping groove 13 are formed in the inner side of one end, far away from the second connecting electric sheet 3, of the switch connecting piece 5, and an elastic electric sheet 14 is fixedly installed in each of the first clamping groove 12 and the second clamping groove 13; a plate spring 4 is arranged between the switch connecting piece 5 and the second connecting electric piece 3, two limiting blocks 17 are fixedly arranged on the inner side of the second connecting electric piece 3, and the two limiting blocks 17 are positioned on two sides of the swinging shaft 16 to limit the swinging of the switch connecting piece 5; a fourth connecting electric piece 10 is fixedly installed on the lower side of the insulator 1 through a bolt, and a connecting clamping piece 9 with a hook groove is fixedly installed at the lower end of the fourth connecting electric piece 10; the lightning arrester assembly 32 is detachably mounted between the connection clip 9 and the switch connector 5.
The insulator 1 and the resistor assembly 27 designed by the invention have the same structure as the insulator 1 and the resistor assembly 27 used in the existing lightning arrester, the resistor assembly 27 is internally provided with a resistor disc with specific characteristics, the umbrella-shaped insulating layer 33 is arranged on the outer side, and the short circuit caused by the connection of rainwater flowing through the lightning arrester can be prevented by the umbrella-shaped insulating layer 33. The resistor assembly 27 is prior art.
As shown in fig. 8, the positive and negative electrodes of two adjacent lightning protection component units 6 are connected to each other through the wires 11, so that the adjacent lightning protection component units 6 are connected in parallel; in the using process, if a fault occurs, after the thermal explosion device 21 in one lightning protection component unit 6 in the lightning protection component 32 is broken, the lightning protection component unit 6 loses the function, and under the condition of no replacement, the lightning protector designed by the invention can also play a lightning protection role through other lightning protection component units 6; although the lightning arrester designed by the invention has the same lightning protection mode as the traditional lightning arrester after the fault happens by adopting other lightning arresters connected in parallel, compared with the traditional lightning arrester, the lightning arrester has the advantages that the parallel connection mode realized by adopting the end-to-end structural arrangement mode adopted by the lightning protection component 32 designed by the invention has small occupied space and is easy to arrange; even if the old line is improved, the installation is easy, and the installation point is the same as the installation point of the traditional drop-out arrester.
As shown in fig. 4 and 5, the lightning protection assembly 32 comprises a lightning protection assembly unit 6 and an insulating connecting member 31 connected with the lightning protection assembly unit 6; the upper and lower ends of the connecting member 31 have two concave circular grooves.
As shown in fig. 6 and 7, the lightning protection component unit 6 includes a first conductive pillar 19, a first insulating sleeve 20, a thermal explosion device 21, a sealing sleeve 22, a limiting ring 23, a pull rod 24, a spring 25, a second insulating sleeve 26, a resistor component 27, a second conductive pillar 28, a third insulating sleeve 29, and a tightening bolt 30, where the resistor component 27 is composed of an inner-side resistor sheet and an umbrella-shaped insulating layer 33, the upper and lower ends of the resistor component 27 are both provided with the second conductive pillar 28, the outer side of the lower-side second conductive pillar 28 is provided with the third insulating sleeve 29, the outer side of the upper-side second conductive pillar 28 is provided with the second insulating sleeve 26, and the outer side of the second insulating sleeve 26 is provided with a flange; the thermal exploder 21 is arranged on the upper side of the resistor assembly 27 and is electrically connected with the resistor disc; a sealing sleeve 22 is arranged on the outer side of the thermal explosion device 21; a first conductive column 19 is arranged on the upper side of the thermal explosion device 21, a first insulating sleeve 20 is arranged on the outer side of the first conductive column 19, and a flange plate is arranged on the outer side of the first insulating sleeve 20; three pull rods 24 are uniformly and fixedly arranged on the lower side of the flange plate on the outer side of the first insulating sleeve 20 in the circumferential direction, and the lower ends of the pull rods 24 penetrate through the flange plate on the outer side of the second insulating sleeve 26; a spring 25 is arranged between the lower end of the pull rod 24 and the flange plate on the outer side of the second insulating sleeve 26, and the spring 25 is a compression spring 25 and has pre-pressure; each pull rod 24 is fixedly provided with a limiting ring 23, and the limiting ring 23 is positioned between the first insulating sleeve 20 and the second insulating sleeve 26.
In the lightning protection assembly unit 6 designed by the invention, after the thermal explosion device 21 breaks down due to a fault, the first insulating sleeve 20 can move downwards relative to the second insulating sleeve 26 under the action of the spring 25, and the limiting ring 23 plays a role in limiting the movement of the first insulating sleeve 20 relative to the second insulating sleeve 26, so that a space capable of containing broken fragments of the thermal explosion device 21 is ensured to be reserved between the first conductive column 19 inside the first insulating sleeve 20 and the second conductive column 28 in the second insulating sleeve 26.
When the lightning protection component 32 is disassembled or replaced, the lightning protection component 32 can be taken down in a traditional mode, then the damaged lightning protection component unit 6 is disassembled, and bolts connected with the connecting piece 31 or the third connecting electric piece 7 are loosened, namely the lightning protection component unit 6 is separated from the lightning protection component 32; the tightening bolt 30 in the corresponding lightning protection component unit 6 is loosened, and the electric wire 11 is pulled out, namely, the lightning arrester designed by the invention is convenient to replace when the lightning protection component unit 6 breaks down.
The sealing sleeve 22 is used for preventing rainwater from entering the thermal explosion device 21, so that the thermal explosion device 21 is short-circuited and fails.
As shown in fig. 5, the first insulating sheath 20 of the lightning module unit 6 located at the lower side of the two adjacent upper and lower lightning module units 6 is nested in the inner groove at the lower end of the connecting member 31, the flange of the first insulating sheath 20 is fixedly connected with the connecting member 31 through a bolt, the third insulating sheath 29 of the lightning module unit 6 located at the upper side is nested in the inner groove at the upper end of the connecting member 31, and the flange of the third insulating sheath 29 is fixedly connected with the connecting member 31 through a bolt.
As shown in fig. 4, a third connecting electric piece 7 is fixedly mounted on the lower side of the third insulating sleeve 29 in the lowest lightning protection component unit 6 through a bolt, and a connecting pin 8 is fixedly mounted on one end of the third connecting electric piece 7 far away from the third insulating sleeve 29, as shown in fig. 1 and 2, the connecting pin 8 is matched with a hook groove in the connecting fastener 9. After all the lightning protection component units 6 are damaged, the second pull ring 18 is hooked on the lower side through an auxiliary tool, the lightning protection component 32 is lifted upwards, the lightning protection component 32 is taken out of the hook groove and taken down for replacement, and the specific replacement process is consistent with the traditional process.
As shown in fig. 7, the upper end of the first conductive post 19 in the uppermost lightning protection component unit 6 protrudes upward and has a spherical surface, and as shown in fig. 2 and 3, the first conductive post 19 is matched with the first card slot 12 and the second card slot 13 in the switch connector 5. The spherical surface and the elastic electric piece 14 have the function of ensuring a better electric connection between the first wire column and the switch connecting piece 5.
As shown in fig. 7, a second tab 18 is fixedly mounted to the outer side of the first insulating sheath 20 in the uppermost lightning module unit 6.
As shown in fig. 4 and 9, the conductive connecting sheets 34 are mounted on the outer sides of the first conductive column 19 and the second conductive column 28, the first conductive columns 19 in two adjacent lightning protection assembly units 6 are connected through the electric wire 11, and the corresponding first insulating sleeves 20 are mounted with the tightening bolts 30 capable of pressing the electric wire 11 against the corresponding conductive connecting sheets 34; two second conductive columns 28 on the lower side of the resistor assembly 27 in two adjacent lightning protection assembly units 6 are connected through the electric wire 11, and the corresponding third insulating sleeve 29 is provided with a tightening bolt 30 capable of pressing the electric wire 11 against the corresponding conductive connecting piece 34. The electric wire 11 can be fixedly connected with the corresponding conductive post by tightening the bolt 30. When the lightning protection component unit 6 is removed or replaced, the bolt connecting the corresponding lightning protection component unit 6 with the connecting piece 31 or the third connecting electric piece 7 is loosened, i.e. the lightning protection component unit 6 is separated from the lightning protection component 32; the tightening bolt 30 in the corresponding lightning protection component unit 6 is loosened, and the electric wire 11 is pulled out, namely, the lightning arrester designed by the invention is convenient to replace when the lightning protection component unit 6 breaks down. The electric wire 11 has an insulating layer thereon, and the insulating layer is removed at the insertion end of the electric wire 11 to electrically connect with the first conductive pillar 19 or the second conductive pillar 28.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications and equivalent variations of the above embodiment according to the technical spirit of the present invention are within the scope of the present invention.
The implementation mode is as follows: when the lightning arrester designed by the invention is used, a complete circuit is formed by the first connecting piece 2, the second connecting piece 3, the switch connecting piece 5, the lightning protection assembly 32, the third connecting piece 7, the connecting pin shaft 8, the connecting clamping piece 9 and the fourth connecting piece 10, the first connecting piece 2 is connected with a lightning receiving end, and the fourth connecting piece 10 is connected with a ground wire; when thunder is struck, thunder and lightning received by the thunder and lightning receiving end is transmitted to the ground wire through the first connecting piece 2, the second connecting piece 3, the switch connecting piece 5, the lightning protection assembly 32, the third connecting piece 7, the connecting pin shaft 8, the connecting clamping piece 9 and the fourth connecting piece 10 and then is led out, and the lightning protection effect is achieved.
In the using process, when a certain lightning protection component unit 6 is damaged, the thermal exploder 21 is detonated by the power frequency current of the high-voltage wire, after the thermal exploder 21 in one lightning protection component unit 6 is broken, the corresponding first insulating sleeve 20 moves downwards relative to the second insulating sleeve 26, so that the overall length of the lightning protection component 32 is shortened, at the moment, the first conductive column 19 originally matched with the first clamping groove 12 in the switch connecting piece 5 can be separated from the first clamping groove 12, and the connecting pin shaft 8 on the third connecting electric sheet 7 arranged at the lower end of the lightning protection component 32 is closer to the connecting clamping piece 9 relative to the lightning protection component 32, so that the lightning protection component 32 swings downwards around the connecting pin shaft 8 under the action of self gravity, and the first conductive column 19 in the uppermost lightning protection component unit 6 is separated from the first clamping groove 12 and swings into the second clamping groove 13; the lightning protection assembly 32 is reconnected to the switch connection member 5; the use of the lightning arrester is not influenced. The number of the lightning protection component units 6 of the lightning protection component 32 can be 3, 4 or more, the number of the corresponding card slots of the switch connecting piece 5 can be correspondingly increased, and only two lightning protection component units 6 and two card slots are shown in the figure. When the last lightning protection component 32 also fails, the first conductive column 19 of the uppermost lightning protection component unit 6 in the lightning protection component 32 is separated from the lowest card slot of the switch connecting member 5, and the lightning protection component 32 falls; the falling function of the traditional falling type lightning arrester is realized.
Claims (10)
1. The utility model provides a zinc oxide arrester, it includes insulator, first connection piece, second connection piece, third connection piece, connecting pin axle, connects fastener, fourth connection piece, lightning-arrest subassembly, its characterized in that: the inner side of one end, far away from the first connecting electric piece, of the second connecting electric piece is provided with a switch connecting piece in a swinging mode through a swinging shaft, and the inner side of one end, far away from the second connecting electric piece, of the switch connecting piece is provided with a first clamping groove and a second clamping groove; a plate spring is arranged between the switch connecting piece and the second connecting electric sheet;
the lightning protection assembly comprises a lightning protection assembly unit and an insulating connecting piece connected with the lightning protection assembly unit;
the lightning protection assembly unit comprises a first conductive column, a first insulating sleeve, a thermal explosion device, a spring, a second insulating sleeve, a resistor assembly, a second conductive column and a third insulating sleeve, wherein the resistor assembly consists of an inner side resistor disc and an umbrella-shaped insulating layer; the upper end and the lower end of the resistor component are respectively provided with a second conductive column, the outer side of the second conductive column at the lower side is provided with a third insulating sleeve, and the outer side of the second conductive column at the upper side is provided with a second insulating sleeve; the thermal explosion device is arranged on the upper side of the resistor assembly and is electrically connected with the resistor disc; a first conductive column is installed on the upper side of the thermal explosion device, and a first insulating sleeve is installed on the outer side of the first conductive column; a spring is arranged between the first insulating sleeve and the second insulating sleeve, and the spring is a compression spring and has pre-pressure;
the first insulating sleeve nest in the lightning protection component unit positioned at the lower side in the upper and lower adjacent lightning protection component units is connected with the third insulating sleeve in the lightning protection component unit positioned at the upper side through a connecting piece;
the third connecting electric piece is arranged at the lower side of a third insulating sleeve in the lowest lightning protection component unit;
the first conductive column in the lightning protection component unit positioned on the uppermost side is matched with the first clamping groove and the second clamping groove in the switch connecting piece;
the first conductive columns in two adjacent lightning protection component units are connected through electric wires; and two second conductive columns positioned on the lower side of the resistance component in two adjacent lightning protection component units are connected through an electric wire.
2. A zinc oxide arrester according to claim 1, characterized in that: and a first pull ring is installed on the switch connecting piece.
3. A zinc oxide arrester according to claim 1, characterized in that: equal fixed mounting has an elasticity electric piece in first draw-in groove and the second draw-in groove, and the upper end that is located the first conductive post in the lightning-arrest subassembly unit of the top is upwards protruding and has the sphere.
4. A zinc oxide arrester according to claim 1, characterized in that: two limiting blocks are fixedly mounted on the inner side of the second connecting electric piece, and the two limiting blocks are located on two sides of the swinging shaft and play a limiting role in swinging the switch connecting piece.
5. A zinc oxide arrester according to claim 1, characterized in that: the upper and lower both ends of connecting piece have two circular grooves of indent, and the first insulating cover that lies in the lightning-arrest subassembly unit of downside in two upper and lower adjacent lightning-arrest subassembly units nests in the inner groovy of connecting piece lower extreme and the ring flange of first insulating cover passes through bolt and connecting piece fixed connection, and the third insulating cover that lies in the lightning-arrest subassembly unit of upside nests in the inner groovy of connecting piece upper end and the ring flange of third insulating cover passes through bolt and connecting piece fixed connection.
6. The zinc oxide arrester of claim 1 wherein: a flange plate is arranged on the outer side of the second insulating sleeve, a flange plate is arranged on the outer side of the first insulating sleeve, three pull rods are uniformly and fixedly arranged on the lower side of the flange plate on the outer side of the first insulating sleeve in the circumferential direction, and the lower ends of the pull rods penetrate through the flange plate on the outer side of the second insulating sleeve; a spring is arranged between the lower end of the pull rod and the flange plate on the outer side of the second insulating sleeve.
7. The zinc oxide arrester of claim 6 wherein: and each pull rod is fixedly provided with a limiting ring, and the limiting ring is positioned between the first insulating sleeve and the second insulating sleeve.
8. A zinc oxide arrester according to claim 1, characterized in that: and a sealing sleeve is arranged on the outer side of the thermal explosion device.
9. A zinc oxide arrester according to claim 1, characterized in that: and a second pull ring is fixedly installed on the outer side of the first insulating sleeve in the uppermost lightning protection component unit.
10. A zinc oxide arrester according to claim 1, characterized in that: the outer sides of the first conductive column and the second conductive column are respectively provided with a conductive connecting sheet, the first conductive columns in two adjacent lightning protection component units are connected through electric wires, and the corresponding first insulating sleeves are provided with tightening bolts capable of pressing the electric wires onto the corresponding conductive connecting sheets; two second conductive columns positioned on the lower side of the resistance component in the two adjacent lightning protection component units are connected through an electric wire, and a corresponding third insulating sleeve is provided with an upper bolt capable of pressing the electric wire onto the corresponding conductive connecting sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077472.8A CN115240937B (en) | 2022-09-05 | 2022-09-05 | Zinc oxide lightning arrester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077472.8A CN115240937B (en) | 2022-09-05 | 2022-09-05 | Zinc oxide lightning arrester |
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| CN115240937A true CN115240937A (en) | 2022-10-25 |
| CN115240937B CN115240937B (en) | 2023-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115602396A (en) * | 2022-11-02 | 2023-01-13 | 杭州永德电气有限公司（Cn） | Lightning arrester separation device with tungsten-copper electrode |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06209514A (en) * | 1992-12-29 | 1994-07-26 | Furukawa Electric Co Ltd:The | Lightning-arrester type interphase spacer |
| US5444429A (en) * | 1993-11-15 | 1995-08-22 | Hubbell Incorporated | Electrical assembly with surge arrester and insulator |
| CN203573757U (en) * | 2013-12-06 | 2014-04-30 | 国家电网公司 | Supporting assembly with lightning-protection function |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06209514A (en) * | 1992-12-29 | 1994-07-26 | Furukawa Electric Co Ltd:The | Lightning-arrester type interphase spacer |
| US5444429A (en) * | 1993-11-15 | 1995-08-22 | Hubbell Incorporated | Electrical assembly with surge arrester and insulator |
| CN203573757U (en) * | 2013-12-06 | 2014-04-30 | 国家电网公司 | Supporting assembly with lightning-protection function |
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| 于永乐;: "防雷保护的应用及维护" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115602396A (en) * | 2022-11-02 | 2023-01-13 | 杭州永德电气有限公司（Cn） | Lightning arrester separation device with tungsten-copper electrode |
| CN115602396B (en) * | 2022-11-02 | 2023-06-16 | 杭州永德电气有限公司 | Lightning arrester disengaging device with tungsten copper electrode |
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| Publication number | Publication date |
|---|---|
| CN115240937B (en) | 2023-04-28 |
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