CN211377180U - Suspension potential lightning protection side needle - Google Patents

Suspension potential lightning protection side needle Download PDF

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Publication number
CN211377180U
CN211377180U CN201921983991.4U CN201921983991U CN211377180U CN 211377180 U CN211377180 U CN 211377180U CN 201921983991 U CN201921983991 U CN 201921983991U CN 211377180 U CN211377180 U CN 211377180U
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China
Prior art keywords
suspension
side needle
lightning
lightning protection
rod
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CN201921983991.4U
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Chinese (zh)
Inventor
李建国
郝飞
赵罡
苗壮
王大军
雷鹏
陈鹏
孙浩
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Inner Mongolia Electric Power Group Co ltd Wuhai Super High Voltage Power Supply Bureau
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Inner Mongolia Electric Power Group Co ltd Wuhai Super High Voltage Power Supply Bureau
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Abstract

The utility model provides a suspension potential lightning protection side needle, which comprises a lightning rod (1) and a suspension potential device (2), wherein the lightning rod (1) is arranged inside the suspension potential device (2); suspension potentiometre (2) include side needle (21), collect pot (22), suspension discharge passageway (23) and ground connection discharge passageway (24), suspension discharge passageway (23) set up in lightning rod (1) one end, ground connection discharge passageway (24) set up in the lightning rod (1) other end, collect pot (22) set up in suspension discharge passageway (23) outside end, side needle (21) pass collect pot (22) set up in suspension discharge passageway (23) outside end. Through collecting the pot, produce the suspension electric potential, can effectively attract thunder and lightning to take place in advance to attract thunder and lightning from this to pass through, reduced the size of thunderbolt electric current, thereby guarantee transmission line safe operation better.

Description

Suspension potential lightning protection side needle
Technical Field
The utility model relates to a high voltage transmission line lightning protection field, concretely relates to install lightning protection side needle on power supply line shaft tower.
Background
The lightning conductor, also known as an overhead ground wire, can be used to protect long and narrow facilities such as hydropower stations in canyons and overhead transmission lines. The lightning conductor usually adopts galvanized steel stranded wires with the section of not less than 35 square millimeters. The protection range of a lightning conductor is usually indicated by the angle between the connecting line between the lightning conductor and the outer conductor and the vertical, i.e. the protection angle. The protection angle is generally not more than 25 degrees, and the smaller the protection angle is, the more reliable the lightning protection is.
The lightning protection level of the line is improved. A line type zinc oxide arrester or a lightning protection side needle is additionally arranged on a line section which is easy to be struck by lightning, so that an insulator string is prevented from being flashed off, and the lightning protection performance of a power transmission line is improved.
Patent CN201420077667.7 discloses a portable lightning protection side needle of high tension transmission line anti-drop, including needle body and syringe needle, the front end of needle body with the rear end of syringe needle is connected, the back end of needle body is equipped with and is used for the installation "U" shape locking connection device of lightning protection side needle, the needle body is the hollow tube, the external diameter of syringe needle is less than the internal diameter of needle body, the syringe needle can slide in the needle body. The utility model discloses an installation "U" shape locking connection device on the needle body has ensured the stable installation of this lightning protection side needle, can not drop and become flexible after the installation, has avoided because of the lightning protection side needle drops to hang and causes permanent power failure accident on the power transmission line. However, in the prior art, a certain lightning stroke risk still exists for the lightning shielding failure due to the protection angle limitation.
The lightning protection side needle is needed, lightning can be effectively attracted to occur in advance, the lightning is attracted to pass through the lightning protection side needle, and the lightning shielding failure risk is reduced.
Disclosure of Invention
The utility model discloses a solve among the prior art still have the problem of certain thunderbolt risk because of the restriction of protection angle to the lightning stroke, provide a suspension electric potential lightning protection side needle, adopt the production of suspension electric potential, effectively attract the thunder and lightning to take place in advance to attract the thunder and lightning to pass through lightning protection side needle, solved above-mentioned problem.
The utility model provides a suspension potential lightning protection side needle, which comprises a lightning rod and a suspension potential device, wherein the lightning rod is arranged inside the suspension potential device; the suspension potential device comprises a side needle, a collection pot, a suspension discharge channel and a grounding discharge channel, the suspension discharge channel is arranged at one end of the lightning rod, the grounding discharge channel is arranged at the other end of the lightning rod, the collection pot is arranged at the outer side end of the suspension discharge channel, and the side needle penetrates through the collection pot and is arranged at the outer side end of the suspension discharge channel.
The zinc oxide arrester is used as a support, so that the whole device has a suspension potential part and a grounding part, and a certain discharge gap is kept.
In sunny days, the side needles and the suspension potential part are influenced by induction electricity and have certain charges. As with the overhead ground wire principle, although there are gap discharge points, the amount of charge accumulation is small and there is no discharge.
In cloudy days, the side needle and the suspension potential part are not only influenced by the induction electricity, but also have electric charges accumulated by electric ions in cloudy days, and under the condition, nearby thunder is easily introduced to the device, so that the thunder directly impacts the device, and the phenomenon of lightning shielding is effectively prevented. The device is provided with two discharge channels, one is a zinc oxide arrester discharge channel, and the other is gap discharge of the device. When the lightning current is weak, the zinc oxide lightning arrester discharges electricity; when lightning current is large, the gap and the lightning arrester discharge at the same time.
When the lightning current is large, if the side needle is burnt and deformed and is detached near the overhead ground wire, the continuous arc phenomenon with the overhead ground wire can not be generated due to the existence of the discharge gap, so that the safe operation of the overhead ground wire is favorably ensured.
A suspension electric potential lightning protection side needle, as preferred mode, lightning rod and side needle coaxial line set up.
A suspension potential lightning protection side needle, as preferred mode, the lightning rod includes insulator, a plurality of valve blocks, end cover, bottom, spring, goes up wiring end and lower wiring end, the coaxial stack of valve block, the spring sets up in the valve block top, the insulator is tubular structure, the insulator periphery is provided with at least one cyclic annular protrudingly, the valve block sets up in the insulator inside and coaxial with the insulator, end cover and bottom set up respectively in the insulator both ends, end cover coupling spring, valve block free surface is connected to the bottom, it sets up in the end cover lateral surface to go up the wiring end, lower wiring end sets up in the bottom lateral surface.
The zinc oxide arrester is composed of a plurality of zinc oxide resistance cards, and the number of the resistance cards is determined by voltage. The zinc oxide resistor disc (also called valve disc) in the zinc oxide arrester has good nonlinear volt-ampere characteristic, when the arrester is applied with normal working voltage, only small leakage current passes through the valve disc. In the presence of overvoltage, a large current flows through the arrester, but the voltage is limited to a certain range.
A suspension electric potential lightning protection side needle, as preferred mode, the suspension discharge passageway is back cover tubular structure, suspension discharge passageway bottom axis position is provided with the through-hole, the lightning rod is provided with one side setting of end cover inside the suspension discharge passageway, end cover and suspension discharge passageway blind end fixed connection go up the wiring end and pass the through-hole.
A suspension electric potential lightning protection side needle, as preferred mode, the ground connection discharge passageway is back cover tubular structure, the lightning rod is provided with one side setting of bottom inside the ground connection discharge passageway, bottom and ground connection discharge passageway blind end fixed connection.
A suspension potential lightning protection side needle, as preferred mode, the side needle includes side needle body and head point end, the side needle body has the metal pole of screw thread for one end, the head point end is the metal awl, the head point end sets up in the side needle body does not have screw thread one end.
The length of the side needle is 1 meter, and the front end of the side needle can be made into a sharp angle for absorbing energy with the lightning; and a screw thread is manufactured at the rear end of the side needle, and the size of the screw thread is consistent with that of a screw rod of the zinc oxide arrester.
A suspension electric potential lightning protection side needle, as preferred mode, collect the pot and be hollow toper structure, the toper point end is the through-hole.
The suspended potential collecting pot is of a pot-shaped structure, the bottom of the suspended potential collecting pot is perforated, and the pitch of the holes is matched with a screw rod of the zinc oxide lightning arrester; the diameter of the pot body is preferably larger than 35mm, and the pot body can effectively absorb suspended electrons.
A suspension potential lightning protection side needle, as preferred mode, go up the wiring end and be the screw rod, side needle body screw thread passes and collects a pot through-hole and is connected with the screw rod.
A suspension electric potential lightning protection side needle, as preferred mode, the earth discharge passageway should keep 17-25 mm's discharge gap distance with suspension discharge passageway side.
A suspension potential lightning protection side needle, as preferred mode, the lightning rod adopts the zinc oxide lightning rod.
The zinc oxide lightning rod mainly comprises a zinc oxide resistance card. Its non-linear coefficient is very small, so that it possesses good non-linear volt-ampere characteristics. Under normal work and voltage, the lightning arrester has a very large resistance, and under the condition of certain overvoltage, the instantaneous resistance is reduced and conducted, so that lightning current can rapidly pass through the lightning arrester. And then, continuously maintaining the extremely large resistance to ensure the normal operation of the line.
The difference between the lightning arrester and the traditional lightning arrester is that the lightning arrester has no discharge gap and plays the role of current leakage and disconnection by utilizing the nonlinear characteristic of zinc oxide.
The lightning protection side needle mounting mode does: firstly, placing the side of a suspension discharge channel on one side of a zinc oxide arrester, and enabling the bottom of the side of the suspension discharge channel to penetrate through a screw rod of the zinc oxide arrester; then inserting the suspension potential collection pot into the screw rod and leaking the suspension potential collection pot out of the screw rod; the side needle is aligned with the screw rod and screwed down, so that the side of the suspension discharge channel and the suspension potential collection pot are stable and immovable. Penetrating the bottom of the discharge channel side of the grounding end through the zinc oxide arrester on the other side and leaking out of the screw rod, and fixing the screw rod by using a nut; and the floating discharge channel side and the grounding end discharge channel side are kept at a discharge gap distance of 17-25 mm.
The utility model discloses beneficial effect as follows:
(1) the collection pot generates suspension potential, can effectively attract thunder to occur in advance and attract the thunder to pass through, and reduces the size of lightning stroke current, thereby better ensuring the safe operation of a power transmission line;
(2) the lightning rod is made of zinc oxide resistance cards, and the nonlinear coefficient of the lightning rod is very small, so that the lightning rod has good nonlinear volt-ampere characteristics.
Drawings
FIG. 1 is a schematic diagram of a suspension potential lightning protection side pin;
FIG. 2 is a schematic diagram of a suspended potential device for a suspended potential lightning protection side needle;
fig. 3 is a schematic view of a floating potential lightning protection side rod lightning rod;
fig. 4 is a schematic diagram of a suspension potential lightning protection side needle.
Reference numerals:
1. a lightning rod; 11. a porcelain bushing; 12. a valve plate; 13. an end cap; 14. a bottom cover; 15. a spring; 16. an upper terminal; 17. a lower connecting terminal; 2. a suspended potential device; 21. a side needle; 211. a side needle body; 212. a head tip; 22. collecting the pan; 23. a suspension discharge channel; 24. and a discharge channel is grounded.
Detailed Description
The technical solutions in the embodiments of the present invention will be made clear below by referring to the attached drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1, the lightning protection side rod with the suspended potential comprises a lightning rod 1 and a suspended potential device 2, wherein the lightning rod 1 is arranged inside the suspended potential device 2.
As shown in fig. 2, the floating potential device 2 includes a side pin 21, a collection pot 22, a floating discharge channel 23 and a ground discharge channel 24, the floating discharge channel 23 is disposed at one end of the lightning rod 1, the ground discharge channel 24 is disposed at the other end of the lightning rod 1, the collection pot 22 is disposed at an outer end of the floating discharge channel 23, and the side pin 21 passes through the collection pot 22 and is disposed at an outer end of the floating discharge channel 23. The lightning rod 1 and the side rod 21 are arranged coaxially. The collection pot 22 is a hollow conical structure with a through hole at the tip of the cone. The diameter of the pot body is more than 35 mm.
As shown in fig. 3, the lightning rod 1 includes a porcelain bushing 11, a plurality of valve plates 12, an end cover 13, a bottom cover 14, a spring 15, an upper terminal 16 and a lower terminal 17, the valve plates 12 are coaxially stacked, the spring 15 is disposed on the top end of the valve plates 12, the porcelain bushing 11 is of a cylindrical structure, at least one annular protrusion is disposed on the periphery of the porcelain bushing 11, the valve plates 12 are disposed inside the porcelain bushing 11 and coaxial with the porcelain bushing 11, the end cover 13 and the bottom cover 14 are respectively disposed at two ends of the porcelain bushing 11, the end cover 13 is connected with the spring 15, the bottom cover 14 is connected with a free surface of the valve plates 12, the upper terminal 16 is disposed on.
The suspension discharge channel 23 is a bottom-sealed cylindrical structure, a through hole is formed in the axis position of the bottom of the suspension discharge channel 23, one side, provided with the end cover 13, of the lightning rod 1 is arranged inside the suspension discharge channel 23, the end cover 13 is fixedly connected with the closed end of the suspension discharge channel 23, and the upper wiring terminal 16 penetrates through the through hole. The grounding discharge channel 24 is a closed-end cylindrical structure, one side of the lightning rod 1, which is provided with the bottom cover 14, is arranged inside the grounding discharge channel 24, and the bottom cover 14 is fixedly connected with the closed end of the grounding discharge channel 24. The upper terminal 16 is a screw, and the side needle body 211 is threaded through the through hole of the collection pot 22 and connected with the screw.
As shown in fig. 4, the side needle 21 includes a side needle body 211 and a head tip 212, the side needle body 211 is a metal rod with a screw thread at one end, the head tip 212 is a metal cone, and the head tip 212 is disposed at the non-screw end of the side needle body 211.
A discharge gap distance of 17-25mm is kept between the grounding discharge channel 24 and the suspension discharge channel 23.
The arrester is usually connected between the system and ground, in parallel with the equipment to be protected. Under normal operation voltage, the zinc oxide resistance card presents extremely high resistance, and the current passing through the zinc oxide resistance card is only microampere level; when the system has overvoltage which endangers the insulation of the electrical equipment, the residual voltage at two ends of the lightning arrester is limited below an allowable value due to the nonlinearity of the zinc oxide resistor disc, and the overvoltage energy is absorbed, so that the insulation of the electrical equipment is protected.
The length of the side needle 21 is 1 meter, and the side needle can be properly increased according to the tower type or the terrain, so that the protection angle of the overhead ground wire of the power transmission line is reduced. And the generation of a part of detour mines is avoided. In case of lightning strike, due to the generation of floating potential, the lightning can be effectively attracted to occur in advance, and the lightning can be attracted to pass through the floating potential. The purpose in advance is to reduce the size of lightning stroke current so as to better ensure the safe operation of a power transmission line.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a suspension potential lightning protection side needle which characterized in that: the lightning rod (1) is arranged in the suspension potential device (2); suspension potentiometre (2) include side needle (21), collect pot (22), suspension discharge passageway (23) and ground connection discharge passageway (24), suspension discharge passageway (23) set up in lightning rod (1) one end, ground connection discharge passageway (24) set up in the lightning rod (1) other end, collect pot (22) set up in suspension discharge passageway (23) outside end, side needle (21) pass collect pot (22) set up in suspension discharge passageway (23) outside end.
2. The suspension potential lightning protection side needle according to claim 1, characterized in that: the lightning rod (1) and the side rod (21) are arranged coaxially.
3. The suspension potential lightning protection side needle according to claim 1, characterized in that: the lightning rod (1) comprises a porcelain bushing (11), a plurality of valve plates (12), an end cover (13), a bottom cover (14), a spring (15), an upper terminal (16) and a lower terminal (17), the valve plates (12) are coaxially stacked, the spring (15) is arranged at the top ends of the valve plates (12), the porcelain bushing (11) is of a cylindrical structure, at least one annular protrusion is arranged on the periphery of the porcelain bushing (11), the valve plate (12) is arranged in the porcelain bushing (11) and is coaxial with the porcelain bushing (11), the end cover (13) and the bottom cover (14) are respectively arranged at two ends of the porcelain sleeve (11), the end cover (13) is connected with the spring (15), the bottom cover (14) is connected with the free surface of the valve plate (12), the upper wiring terminal (16) is arranged on the outer side face of the end cover (13), and the lower wiring terminal (17) is arranged on the outer side face of the bottom cover (14).
4. The suspension potential lightning protection side needle according to claim 3, characterized in that: the lightning rod is characterized in that the suspension discharge channel (23) is of a bottom-sealed cylindrical structure, a through hole is formed in the axis position of the bottom of the suspension discharge channel (23), one side of the end cover (13) is arranged inside the suspension discharge channel (23), the end cover (13) is fixedly connected with the closed end of the suspension discharge channel (23), and the upper wiring end (16) penetrates through the through hole.
5. The suspension potential lightning protection side needle according to claim 3, characterized in that: the ground discharge channel (24) is of a back cover cylindrical structure, one side, provided with the bottom cover (14), of the lightning rod (1) is arranged inside the ground discharge channel (24), and the bottom cover (14) is fixedly connected with the closed end of the ground discharge channel (24).
6. The suspension potential lightning protection side needle according to claim 4, characterized in that: the side needle (21) comprises a side needle body (211) and a head tip (212), the side needle body (211) is a metal rod with a screw thread at one end, the head tip (212) is a metal cone, and the head tip (212) is arranged at one end of the side needle body (211) without the screw thread.
7. The suspension potential lightning protection side needle according to claim 6, characterized in that: the collecting pot (22) is of a hollow conical structure, and the conical tip is a through hole.
8. The suspension potential lightning protection side needle according to claim 6, characterized in that: the upper wiring terminal (16) is a screw rod, and the side needle body (211) is screwed through the through hole of the collection pot (22) and connected with the screw rod.
9. The floating potential lightning protection side needle according to any one of claims 1 to 8, characterized in that: and a discharge gap distance of 17-25mm is kept between the grounding discharge channel (24) and the suspension discharge channel (23).
10. The floating potential lightning protection side pin according to claim 9, characterized in that: the lightning rod (1) is a zinc oxide lightning rod.
CN201921983991.4U 2019-11-18 2019-11-18 Suspension potential lightning protection side needle Active CN211377180U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921983991.4U CN211377180U (en) 2019-11-18 2019-11-18 Suspension potential lightning protection side needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921983991.4U CN211377180U (en) 2019-11-18 2019-11-18 Suspension potential lightning protection side needle

Publications (1)

Publication Number Publication Date
CN211377180U true CN211377180U (en) 2020-08-28

Family

ID=72156549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921983991.4U Active CN211377180U (en) 2019-11-18 2019-11-18 Suspension potential lightning protection side needle

Country Status (1)

Country Link
CN (1) CN211377180U (en)

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