CN213025620U

CN213025620U - Lightning arrester

Info

Publication number: CN213025620U
Application number: CN202022468675.2U
Authority: CN
Inventors: 林骁; 李吉峰; 冯向远; 胡海滨; 席伟; 方翔; 茹光伟
Original assignee: Huaneng Luoyang Thermal Power Co Ltd
Current assignee: Huaneng Luoyang Thermal Power Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-04-20
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a lightning arrester, include: the lightning protection elements are detachably connected in series to form a lightning protection body; the monitoring device is connected with at least one lightning protection element and is used for monitoring the air pressure in the inner cavities of the plurality of lightning protection elements; the shock absorbing base is arranged at one end of the lightning protection body; sealing device locates each the both ends of lightning-arrest component for increase the leakproofness of connecting between a plurality of lightning-arrest components, this arrester possesses the antidetonation function, prevents that internals from damaging, improves life, and is difficult for the advantage that wets in convenient transportation, the use.

Description

Lightning arrester

Technical Field

The utility model relates to an arrester technical field especially relates to an arrester.

Background

Lightning arresters are equipment which protects equipment of a substation from lightning surge. When the lightning impulse waves transmitted to the transformer substation along the line exceed the lightning arrester protection level, the lightning arrester firstly discharges, lightning current is safely led to the ground through a good conductor, and the amplitude of the lightning voltage is limited below the lightning impulse level of protected equipment by utilizing the grounding device, so that the electrical equipment is protected. The lightning arrester can be divided into the following parts according to the development sequence: protective gap-is the simplest form of arrester; the tube-type lightning arrester is also a protective gap, but can automatically extinguish arc after discharging; valve type lightning arrester-is to divide a single discharge gap into many short series gaps, and increases the nonlinear resistance and improves the protection performance.

But current arrester has a large amount of shortcomings, for example current arrester anti-seismic performance is relatively poor, so that earthquake comes temporarily, and in the rainy day that the thunder and lightning was handed over, the arrester produces the vibrations of high strength, along with the vibrations of arrester high strength, will lead to the damage of inside spare part, thereby lose the effect of taking shelter from thunder, the life of arrester has been reduced, and the vibrations of arrester high strength, can lead to the mounting structure to take place to become flexible, thereby cause the danger of falling, great reduction the security performance, and current arrester is bulky, inconvenient transportation, and the arrester is wet easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lightning arrester possesses the antidetonation function, prevents that the internals from damaging, improving life, and the difficult advantage that wets in convenient transportation, the use.

In order to realize the purpose, the utility model adopts the technical proposal that: an arrester, comprising: the lightning protection elements are detachably connected in series to form a lightning protection body; the monitoring device is connected with at least one lightning protection element and is used for monitoring the air pressure in the inner cavities of the plurality of lightning protection elements; the shock absorbing base is arranged at one end of the lightning protection body; and the sealing devices are arranged at two ends of each lightning protection element and used for increasing the sealing property of the connection among the plurality of lightning protection elements.

The utility model discloses set up a plurality of lightning-arrest components detachable and establish ties each other and constitute the lightning-arrest body for the lightning arrester is convenient to be transported; the sealing device is arranged, so that the connection sealing performance of the lightning protection body is improved; the monitoring device is a pressure monitoring device and is used for monitoring the air pressure change inside the lightning protection body, the sealing performance of the lightning arrester of the utility model is judged through the air pressure change, and then whether the internal resistance card is affected with damp or not is judged, the monitoring device can monitor the lightning arrester in real time under the charged and uncharged conditions, thereby being convenient for finding problems in time and ensuring the safe operation of a power grid; simultaneously, the shock absorption base that sets up can avoid the vibrations that the earthquake brought to cause the damage to the resistance card of lightning-arrest body inside, improves the life of arrester.

Preferably, the shock absorbing base comprises an upper buffer plate and a lower buffer plate positioned on one side of the upper buffer plate far away from the lightning protection body; and a buffer spring is also arranged between the upper buffer plate and the lower buffer plate.

Through the buffer spring who sets up about setting up buffer board and between the two, when producing vibrations, can decompose it through compression spring with the power that vibrations brought, make the inside part of arrester avoid damaging, improved arrester life.

Preferably, the sealing device is a rubber sleeve sleeved between each lightning protection element connected in series.

The rubber sleeve greatly increases the connection strength between the lightning protection elements and also improves the sealing performance of the lightning protection body.

Preferably, each lightning protection element further comprises an insulating outer sleeve and a resistor disc positioned in an inner cavity of each lightning protection element.

The arrangement of the insulating sleeve improves the insulating property of the lightning arrester, so that the performance of the lightning arrester is stable and reliable; the resistor disc of the inner cavity of the lightning protection element adopts a zinc oxide resistor disc, no discharge gap exists, and the lightning protection element has good protection performance.

Preferably, the insulating outer sleeve is composed of a large umbrella and a small umbrella, and the large umbrella and the small umbrella are distributed on the outer side of the lightning arrester body at intervals.

The large umbrella and the small umbrella are distributed outside the lightning arrester body at intervals in an umbrella shape, and the large umbrella is positioned at the upper end of the small umbrella, so that the insulativity is further improved.

Preferably, the lightning protection elements are connected with each other through fasteners, and the sealing device is sleeved outside the fasteners.

The fastener can adopt the connected mode of nut screw to carry out fixed connection between a plurality of lightning-arrest components, improves and connects the compactness.

Preferably, the monitoring device comprises: the barometer is used for monitoring the air pressure in the inner cavities of the lightning protection elements; and the mounting frame is used for fixedly mounting the barometer.

The arrangement of the barometer is used for monitoring the air pressure condition of the inner cavity of the lightning protection body formed by the mutual series connection, so that the sealing performance of the lightning protection body and the damp condition of the internal resistance card are judged.

Preferably, the lightning protection device further comprises a bracket installed between the lightning protection body and the shock absorption base. For supporting the lightning conductor body.

Preferably, the device further comprises a stabilizing component connected to the bracket.

Through setting up stable assembly, this arrester can avoid self that extreme weather brought such as strong wind, earthquake, outside striking rocks and the internals that causes damages in the in-service use environment.

Preferably, the stabilizing assembly comprises: the movable panel is movably connected to the surface of the bracket and used for moving back and forth in the vertical direction of the bracket; the sliding rods are connected with the movable panel, and the movable panel can slide up and down on the sliding rods; and the limiting parts are respectively arranged at two sides of each sliding rod connected with the movable panel and used for limiting the sliding distance of the movable panel on the sliding rods.

When an earthquake occurs, the shock absorption base realizes buffering and drives the movable panel to slide in a vertical friction manner on the surface of the bracket, so that the force caused by the vibration is decomposed in an auxiliary manner; the limiting piece is arranged at the same time, and further limits the moving range of the movable panel; a certain example exists between the limiting parts, so that when vibration is generated, the bracket is allowed to drive the movable panel and the connecting end of the bracket and/or the connecting part of the sliding rod and the movable panel to move up and down; meanwhile, the movable panel and the sliding rod play a role in auxiliary support of the lightning arrester, and stability is improved.

Adopt the technical scheme of the utility model afterwards, can reach following technological effect: 1) the anti-seismic device has an anti-seismic function, prevents internal parts from being damaged, and prolongs the service life; 2) convenient transportation and difficult damping in the use process; 3) can real-time supervision arrester internal seal nature and internal resistance piece condition of weing.

Drawings

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

Fig. 1 is a schematic structural diagram of an arrester 100 according to the present invention.

Fig. 2 is a schematic structural view of the shock absorbing base 20 in fig. 1.

Fig. 3 is a schematic structural view of the stabilizing assembly 10 of fig. 1.

Fig. 4 is a partially enlarged view of a in fig. 1.

Description of the main component symbols:

1 is a sealing device; 2 is a lightning protection element; 201 is a big umbrella; 202 is a small umbrella; 3 is a high-voltage wire terminal; 4 is a pipeline; 5 is a barometer; 6 is an anti-halo ring; 7 is a grading ring; 8 is a mounting frame; 9 is a bracket; 10 is a stabilizing component; 11 is a slide bar; 12 is a nut; 13 is a screw thread; 14 is a movable panel; 20 is a shock absorbing base; 22 is an upper buffer plate; 23 is a buffer spring; 24 is a lower buffer plate; 100 is a lightning arrester.

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.

Example 1:

referring to fig. 1, an arrester 100 includes a plurality of arrester elements 2, a monitoring device, a shock absorbing base 20, and a sealing device 1.

Specifically, a plurality of lightning protection elements 2 are detachably connected in series to form a lightning protection body, so that the transportation is convenient; at least one lightning protection element 2 is connected with a monitoring device, the monitoring device is in communication connection with an IED through a data interface and a data line or an optical cable, and outputs a state parameter signal of the lightning arrester 100, so that the air pressure in an inner cavity of a lightning protection body formed by connecting a plurality of lightning protection elements 2 in series is obtained, and the air pressure is changed to judge the sealing performance of the lightning arrester, and then whether an internal resistance card is affected with damp is judged, and the monitoring device can be both used under the electrified and uncharged conditions, so that the lightning arrester can be monitored in real time, problems can be found in time, and the safe operation of a power grid is guaranteed; the shock absorbing base 20 is arranged at one end, close to the ground, of the lightning arrester body, so that damage to a resistor disc inside the lightning arrester body caused by vibration caused by an earthquake can be avoided, and the service life of the lightning arrester is prolonged; the sealing devices 1 are arranged at two ends of each lightning protection element 2 and are used for increasing the sealing performance of the connection among the lightning protection elements 2; make this device possess the antidetonation function, prevent that the internals from damaging, improve life, and convenient transportation, difficult advantage that wets in the use.

Example 2:

referring to fig. 2, the shock absorbing base 20 includes an upper buffer plate 22 and a lower buffer plate 24 located on a side of the upper buffer plate 22 away from the lightning protection body; a buffer spring 23 is also arranged between the upper buffer plate 22 and the lower buffer plate 24. Through the buffer spring 23 that sets up buffer board and between the two about setting, when producing vibrations, can break down it through compression spring 23 with the power that vibrations brought, make the inside part of arrester avoid damaging, improved arrester life. For example, the shock absorbing base 20 can be replaced by other ways with a buffering effect, and the details are not repeated herein.

The sealing device 1 is a rubber sleeve sleeved between each lightning protection element 2 which are connected in series. The rubber sleeve greatly increases the connection strength between the lightning protection elements 2 and also improves the sealing performance of the lightning protection body.

The monitoring device includes: the barometer 5 is used for monitoring the air pressure in the inner cavities of the lightning protection elements 2; and the mounting rack 8 is used for fixedly mounting the air pressure meter 5. And the barometer 5 is used for monitoring the air pressure condition of an inner cavity of the lightning protection body formed by connecting the lightning protection bodies in series so as to judge the sealing performance of the lightning protection body and the damp condition of the internal resistance card.

Specifically, referring to fig. 1, the barometer 5 is connected to an inner cavity of one of the lightning protection elements 2 through a pipeline 4, and is used for monitoring the air pressure in the inner cavity of the lightning protection element 2, so as to obtain the air pressure in an inner cavity of a lightning protection body formed by connecting a plurality of lightning protection elements 2 of the lightning protection element 2 in series, and the sealing condition of the lightning protection body and the damp condition of the resistor disc are judged through the change of the air pressure in the local inner cavity of the lightning protection body.

Certainly, a plurality of barometers 5 which are arranged can be connected with a plurality of lightning protection elements 2 which are connected in series in a one-to-one correspondence mode through pipelines 4, so that the inner cavity of each lightning protection element 2 is independently monitored, and the monitoring efficiency and the monitoring precision are improved.

Example 3:

each lightning protection element 2 further comprises an insulating outer casing and a resistive sheet located in the inner cavity of each lightning protection element 2. The arrangement of the insulating sleeve improves the insulating property of the lightning arrester 100, so that the performance of the lightning arrester 100 is stable and reliable; the resistor disc in the inner cavity of the lightning protection element 2 is made of zinc oxide resistor disc, no discharge gap exists, and the protection performance is good.

Further, referring to fig. 4, the insulating sheath is composed of a large umbrella 201 and a small umbrella 202, and the large umbrella 201 and the small umbrella 202 are distributed at intervals outside the arrester body. The large umbrella 201 and the small umbrella 202 are distributed outside the arrester body at intervals in an umbrella shape, and the large umbrella 201 is positioned at the upper end of the small umbrella 202, so that the insulation property is further improved.

Furthermore, the lightning protection elements 2 are connected with each other through fasteners, and the fasteners are sleeved with the sealing device 1. The fastener can adopt the connected mode of nut screw to carry out fixed connection between a plurality of lightning protection component 2, improves and connects the compactness.

Furthermore, the lightning protection device also comprises an anti-corona ring 6 and a grading ring 7 which are sequentially connected to the upper end of the lightning protection body at intervals from top to bottom. The corona prevention ring 6 and the grading ring 7 are arranged, and the electric field intensity and the electric potential distribution of the end part of the lightning arrester 100 are controlled by adjusting the sizes of the corona prevention ring and the grading ring.

Example 4:

the lightning arrester 100 further comprises a support 9, which is installed between the lightning arresting body and the shock absorbing base 20 and is used for supporting the lightning arresting body.

Further, a stabilizing assembly 10 is included and is attached to the frame 9. Through setting up stabilizing component 10, this arrester 100 can avoid shaking and causing the damage of internals in the self that extreme weather such as strong wind, earthquake, outside striking brought in the in-service use environment.

In particular, with reference to fig. 3, the stabilizing assembly 10 comprises a movable panel 14, which is movably connected to the surface of the support 9, for moving back and forth in the vertical direction of the support 9; a plurality of sliding rods 11 connected with a movable panel 14, wherein the movable panel 14 can slide up and down on the plurality of sliding rods 11; and the limiting pieces are respectively arranged at two sides of each sliding rod 11 connected with the movable panel 14 and used for limiting the sliding distance of the movable panel 14 on the sliding rods 11. When an earthquake occurs, the shock absorption base 20 realizes buffering and drives the movable panel 14 to slide on the surface of the bracket 9 in a vertical friction manner, so that the force caused by the vibration is decomposed in an auxiliary manner; the limiting piece is arranged at the same time, and further limits the moving range of the movable panel; a certain distance exists between the limiting parts, so that when vibration occurs, the bracket 9 drives the movable panel 14 to move up and down at the connecting end of the bracket 9 and/or the connecting part of the sliding rod 11 and the movable panel 14; meanwhile, the movable panel 14 and the sliding rod 11 play an auxiliary supporting role for the lightning arrester 100, and the stability performance is increased. For example, the limiting member is a nut 12, two sections of threads 13 are spaced apart from each other on the sliding rod 11, a distance between the two sections of threads is a sliding distance of the sliding rod 11, and the two sections of threads 13 are respectively connected to the nut 12, so as to limit a sliding range of the movable panel 14 on the sliding rod 11.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An arrester, comprising:

the lightning protection elements are detachably connected in series to form a lightning protection body;

the monitoring device is connected with at least one lightning protection element and is used for monitoring the air pressure in the inner cavities of the plurality of lightning protection elements;

the shock absorbing base is arranged at one end of the lightning protection body;

and the sealing devices are arranged at two ends of each lightning protection element and used for increasing the sealing property of the connection among the plurality of lightning protection elements.

2. The arrester of claim 1 wherein the shock mount includes an upper bumper and a lower bumper located on a side of the upper bumper remote from the arrester body; and a buffer spring is also arranged between the upper buffer plate and the lower buffer plate.

3. A lightning arrester according to claim 1, characterized in that the sealing means is a rubber sleeve arranged between each of the lightning arresting elements connected in series.

4. The surge arrester of claim 1 wherein each of the surge arresting elements further comprises an insulating outer jacket and a resistive sheet positioned within an interior chamber of each of the surge arresting elements.

5. A lightning arrester according to claim 4, characterized in that the insulating casing is composed of a large umbrella and a small umbrella, and the large umbrella and the small umbrella are spaced apart from each other and distributed outside the lightning arrester body.

6. A surge arrester according to claim 1, characterized in that the plurality of surge arresting elements are interconnected by means of fasteners which surround the sealing means.

7. A lightning arrester according to claim 1, characterized in that the monitoring device comprises:

the barometer is used for monitoring the air pressure in the inner cavities of the lightning protection elements;

and the mounting frame is used for fixedly mounting the barometer.

8. A surge arrester according to claim 1, characterized in that: the lightning protection device further comprises a support, and the support is installed between the lightning protection body and the shock absorption base.

9. A surge arrester according to claim 8, characterized in that: also included is a stabilizing assembly connected to the bracket.

10. A surge arrester according to claim 9, characterized in that: the stabilizing assembly includes:

the movable panel is movably connected to the surface of the bracket and used for moving back and forth in the vertical direction of the bracket;

the sliding rods are connected with the movable panel, and the movable panel can slide up and down on the sliding rods;

and the limiting parts are respectively arranged at two sides of each sliding rod connected with the movable panel and used for limiting the sliding distance of the movable panel on the sliding rods.