CN213752176U - Metal oxide lightning arrester with discharge counting function - Google Patents
Metal oxide lightning arrester with discharge counting function Download PDFInfo
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- CN213752176U CN213752176U CN202022847649.0U CN202022847649U CN213752176U CN 213752176 U CN213752176 U CN 213752176U CN 202022847649 U CN202022847649 U CN 202022847649U CN 213752176 U CN213752176 U CN 213752176U
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Abstract
The utility model relates to a lightning protection device technical field, concretely relates to metal oxide arrester with discharge counting function. The metal oxide lightning arrester with the discharge counting function comprises a lightning arrester body, a tripper support and a lightning counter, wherein the top of the lightning arrester body is connected with a high-voltage bus through a wiring terminal, the bottom of the lightning arrester body is provided with a grounding bolt and a base, the tripper support is connected to the lightning arrester body, the lightning counter is connected with the grounding bolt, and the tripper support is provided with a tripper; and one end of the release is electrically connected with the wiring terminal, and the other end of the release is grounded with the steel tower cross arm through a grounding wire. The utility model discloses to prior art's not enough, provide a reliable performance's metallic oxide arrester with discharge counting function, when the arrester breaks down unusually, not only can withdraw from the operation safely, be convenient for maintain but also can monitor the arrester action of discharging.
Description
Technical Field
The patent of the utility model relates to a lightning protection device technical field, concretely relates to metal oxide arrester with discharge counting function.
Background
35kV circuit tower poles in the industries such as electric power, new energy and chemical engineering are very easy to trip or damage facilities due to lightning stroke or overvoltage operation, accident occurrence points and reasons cannot be found in time after an accident occurs, the power supply recovery speed is influenced, and a large amount of electric energy is lost. At present, the requirements of various industries on the reliability of lines are higher and higher, and no lightning arrester in the current market can accurately record the action times, so that the metal oxide lightning arrester with the discharge counting function is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a reliable performance's metallic oxide arrester with discharge counting function, when the arrester breaks down unusually, not only can withdraw from the operation safely, be convenient for maintain but also can monitor the arrester action of discharging.
The technical scheme of the utility model is realized like this: this metal oxide arrester with discharge counting function, including the arrester body, its top of arrester body is passed through binding post and is connected with high-voltage bus, and its bottom is provided with earth bolt and base, its characterized in that: the lightning arrester also comprises a release support connected to the lightning arrester body and a lightning counter connected with the grounding bolt, wherein a release is arranged on the release support; and one end of the release is electrically connected with the wiring terminal, and the other end of the release is grounded with the steel tower cross arm through a grounding wire.
The lightning arrester comprises a lightning arrester body and is characterized in that the lightning arrester body comprises an external porcelain bushing and an insulating cylinder inside the porcelain bushing, an epoxy glass fiber reinforced plastic core rod and a plurality of ZnO valve plates which are stacked and penetrate through the epoxy glass fiber reinforced plastic core rod are arranged in the insulating cylinder, and a polymer filling material is filled in gaps between the ZnO valve plates and the inside of the porcelain bushing.
The lightning counter comprises a voltage-taking resistor disc, an electromagnetic coil, an electromagnetic counter and a bottom plate, wherein a high-voltage outlet end is led out from the center of the bottom plate.
The base comprises an aluminum alloy base, and a fixing screw hole is formed in the base.
The utility model provides an existing defect among the background art, have following beneficial effect:
the utility model has the advantages of being scientific and reasonable in structural design, when the arrester breaks down unusually, not only can withdraw from the operation safely, be convenient for maintain but also can monitor the arrester action of discharging. The utility model discloses in be equipped with the release, the release can automatic and interconnecting link automatic tripping when extreme condition breaks down appear in arrester or transmission line, reaches the purpose that the arrester was taken off the net, guarantees transmission line's safe and reliable operation. The utility model discloses there is not discharge gap to utilize the nonlinear characteristic of ZnO valve block to play the effect of earial drainage and cut-off, release overcurrent, protective apparatus that can be fine. Through setting up the thunder and lightning counter, can be used to take notes the arrester action number of times, master thunder and lightning activity law, improve the power transmission and distribution equipment lightning protection reliability. The utility model discloses can be used in crossing over mountain area and the frequent region of thunder and lightning activity, the security is high.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is an internal schematic view of the arrester body of fig. 1;
in the figure: the lightning arrester comprises a lightning arrester body 1, a lightning counter 2, a release support 3, a release 4, a grounding wire 5, a wiring terminal 6, a grounding bolt 7, a base 8, a porcelain bushing 11, an insulating cylinder 12, a ZnO valve plate 13, a polymer filling material 14 and an epoxy glass fiber reinforced plastic core rod 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the metal oxide arrester with the discharge counting function as shown in fig. 1 and fig. 2 comprises an arrester body 1, wherein the top of the arrester body 1 is connected with a high-voltage bus through a wiring terminal 6, the bottom of the arrester body is provided with a grounding bolt 7 and a base 8, the arrester further comprises a release bracket 3 connected to the arrester body 1 and a lightning counter 2 connected with the grounding bolt 7, and a release 4 is installed on the release bracket 3; one end of the release 4 is electrically connected with the wiring terminal 6, and the other end of the release is grounded with the steel tower cross arm through the grounding wire 5. The lightning arrester body 1 comprises an external porcelain bushing 11 and an insulating cylinder 12 inside the porcelain bushing 11, an epoxy glass fiber reinforced plastic core rod 15 and a plurality of ZnO valve plates 13 which are stacked and penetrate through the epoxy glass fiber reinforced plastic core rod 15 are arranged in the insulating cylinder 12, and a polymer filling material 14 is filled in gaps between the ZnO valve plates 13 and the inside of the porcelain bushing 11. The thunder and lightning counter 2 comprises a voltage-taking resistance card, an electromagnetic coil, an electromagnetic counter and a bottom plate, wherein a high-voltage outlet end is led out from the center of the bottom plate. The base 8 comprises an aluminum alloy base, and a fixing screw hole is formed in the base 8.
The utility model discloses a working process is: and a wire nose at one side of a connecting wire of the lightning counter 2 is arranged on a base 8 of the lightning arrester, and the other side of the connecting wire is connected with the counter after the lightning arrester is arranged. And connecting a grounding wire 5 at the bottom of the release 4 with the steel tower cross arm to be grounded. Under normal operating voltage, the leakage current flowing through the lightning counter 2 is very small and the counter does not act. When the lightning arrester passes through lightning waves, operating waves and power frequency overvoltage, strong working current passes through the nonlinear resistor of the counter, and discharges to the electromagnetic coil through direct current conversion to enable the counter to be attracted once, so that the action times of the lightning arrester can be measured. In the current collection and transmission lines, overvoltage and overcurrent induced by lightning can be blocked and released through the piezoresistor formed by the ZnO valve plate 13, so that the protection effect is achieved. Meanwhile, when the whole lightning arrester or the power transmission line has an extreme condition and breaks down, the tripper 4 can automatically trip from the line, so that the purpose of disconnecting the lightning arrester from the network is achieved, and the safe and reliable operation of the power transmission line is ensured. The utility model discloses utilize power frequency short-circuit current to make 4 earthing terminals of release throw off automatically, the arrester withdraws from the operation, and the accident prevention further enlarges to give the visibility and break away from the sign, the maintainer of being convenient for in time discovers the fault point and maintains and change, and release 4 does not move and is the low impedance (compare with the arrester), does not influence the protection characteristic of the former operating condition of system and arrester. Compared with the traditional arrester, the metal oxide arrester has no discharge gap, and the ZnO valve plates 13 are stacked, so that the valve plates present the maximum resistance under the power frequency voltage, effectively inhibit the power frequency current, and present the small resistance under the condition of overvoltage, the nonlinear characteristic of zinc oxide can be utilized to play the roles of current leakage and cut-off, the over-current can be well released, and the equipment can be well protected. The filled high polymer filling material 14 can improve the heat dissipation effect of the valve plate during working and reduce the surface temperature of the valve plate, thereby improving the reliability of the lightning arrester.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a metal oxide arrester with count function discharges, includes arrester body (1), and its top of arrester body (1) is passed through binding post (6) and is connected with high-voltage bus, and its bottom is provided with earth bolt (7) and base (8), its characterized in that: the lightning arrester also comprises a release support (3) connected to the lightning arrester body (1) and a lightning counter (2) connected with the grounding bolt (7), wherein a release (4) is installed on the release support (3); and one end of the release (4) is electrically connected with the wiring terminal (6), and the other end of the release is grounded with the steel tower cross arm through the grounding wire (5).
2. The metal oxide arrester with a discharge counting function according to claim 1, characterized in that: the lightning arrester comprises a lightning arrester body (1) and is characterized in that the lightning arrester body comprises an external porcelain bushing (11) and an insulating cylinder (12) inside the porcelain bushing (11), an epoxy glass fiber reinforced plastic core rod (15) and a plurality of ZnO valve plates (13) which are stacked to penetrate through the epoxy glass fiber reinforced plastic core rod (15) are arranged in the insulating cylinder (12), and a high-polymer filling material (14) is filled in gaps inside the ZnO valve plates (13) and the porcelain bushing (11).
3. The metal oxide arrester with a discharge counting function according to claim 1 or 2, characterized in that: the lightning counter (2) comprises a voltage-taking resistor disc, an electromagnetic coil, an electromagnetic counter and a bottom plate, and a high-voltage outlet end is led out from the center of the bottom plate.
4. The metal oxide arrester with a discharge counting function according to claim 3, characterized in that: the base (8) comprises an aluminum alloy base, and the base (8) is provided with a fixing screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847649.0U CN213752176U (en) | 2020-12-01 | 2020-12-01 | Metal oxide lightning arrester with discharge counting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847649.0U CN213752176U (en) | 2020-12-01 | 2020-12-01 | Metal oxide lightning arrester with discharge counting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213752176U true CN213752176U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022847649.0U Active CN213752176U (en) | 2020-12-01 | 2020-12-01 | Metal oxide lightning arrester with discharge counting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213752176U (en) |
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2020
- 2020-12-01 CN CN202022847649.0U patent/CN213752176U/en active Active
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