阅读说明：本技术 变间隙接闪器以及避雷装置 (Variable-gap lightning arrester and lightning arrester ) 是由 张焕强 余克光 于 2020-11-12 设计创作，主要内容包括：本发明涉及一种变间隙接闪器以及避雷装置,变间隙接闪器包括引雷极、第一导电体和第二导电体,第一导电体用于与接地网电连接,第二导电体弹性设置于第一导电体上,引雷极穿设于第二导电体并与第一导电体绝缘连接,第二导电体的周部环设有多个叶片,第一状态时,第二导电体与引雷极间隔,第二状态时,叶片能够在风力作用下驱动第二导电体与引雷极抵接。通过设置第二导电体与第一导电体弹性连接,引雷极与第二导电体间隔,第二导电体上设置有叶片,叶片在风力作用下使第二导电体与引雷极抵接,实现电通路。该结构可避免引雷极因发生电晕而无法顺利引雷的问题,和通过风吹散引雷极上的大量电荷以避免发生电晕,具有结构简单、引雷可靠性高的特点。(The invention relates to a gap-variable lightning arrester and a lightning arrester, wherein the gap-variable lightning arrester comprises a lightning guiding pole, a first conductor and a second conductor, the first conductor is used for being electrically connected with a grounding grid, the second conductor is elastically arranged on the first conductor, the lightning guiding pole penetrates through the second conductor and is in insulation connection with the first conductor, a plurality of blades are arranged on the periphery of the second conductor in a surrounding mode, the second conductor is spaced from the lightning guiding pole in a first state, and the blades can drive the second conductor to be abutted to the lightning guiding pole under the action of wind power in a second state. Through setting up second electric conductor and first electric conductor elastic connection, lightning strike utmost point and second electric conductor interval are provided with the blade on the second electric conductor, and the blade makes second electric conductor and lightning strike utmost point butt under the wind-force effect, realizes the electric path. The structure can avoid the problem that the lightning-induced pole cannot smoothly induce lightning due to corona, and disperse a large amount of charges on the lightning-induced pole through wind blowing so as to avoid corona, and has the characteristics of simple structure and high lightning-induced reliability.)

1. A gap-variable lightning arrester is characterized by comprising a lightning guide pole, a first conductor and a second conductor, wherein the first conductor is used for being electrically connected with a grounding grid, the second conductor is elastically arranged on the first conductor, the lightning guide pole penetrates through the second conductor and is in insulation connection with the first conductor, a plurality of blades are arranged around the periphery of the second conductor, the second conductor is spaced from the lightning guide pole in a first state, and the blades can drive the second conductor to be abutted against the lightning guide pole under the action of wind power in a second state.

2. The gap-variable lightning receptor according to claim 1, wherein the second conductor is provided with a hemispherical groove, one end of the lightning leading electrode is provided with a hemispherical protrusion, the protrusion is located in the groove, a first connecting rod is arranged on the protrusion, a recess bottom of the groove is provided with an avoiding hole for avoiding the first connecting rod, and the first connecting rod passes through the avoiding hole and is connected with the first conductor.

3. The gap-variable lightning arrester as claimed in claim 2, wherein a waterproof ring with elasticity is arranged at the notch position of the groove, the waterproof ring is sleeved on the lightning guide pole, and the waterproof ring is used for blocking the gap between the lightning guide pole and the second conductor.

4. The variable gap lightning receptor according to claim 2, wherein a spring is arranged at an end of the second conductor facing away from the groove, and the second conductor and the first conductor are elastically connected through the spring.

5. The variable clearance lightning receptor of claim 4, wherein the spring is a plurality of springs, and the plurality of springs are distributed at intervals along the circumference of the first connecting rod.

6. The variable gap lightning receptor of claim 4, wherein the blade is arranged in a vertical direction, and the blade is connected to the periphery of the second conductor by a second connecting rod.

7. The variable gap electrical lightning receptor of claim 6, wherein the blade is disposed at an end of the second electrical conductor distal from the spring.

8. The variable gap lightning receptor according to claim 1, wherein the top end of the lightning conducting pole is provided with a lightning conducting part having a conical shape.

9. The variable gap lightning receptor according to claim 1, wherein a grading ring is further arranged on the lightning leading electrode.

10. A lightning arrester comprising the gap-variable lightning arrester according to any one of claims 1 to 9, further comprising a down conductor and a grounding grid, wherein the gap-variable lightning arrester is mounted on the top of a tower, and the gap-variable lightning arrester is electrically connected with the grounding grid through the down conductor.

Technical Field

The invention relates to the technical field of power equipment, in particular to a gap-variable lightning arrester and a lightning arrester comprising the same.

Background

The lightning arrester is an important component of a lightning arrester, is a metal object for directly receiving lightning stroke, is arranged on the top of a protected object and is connected with a grounding grid through a down conductor. When lightning stroke occurs, lightning is introduced into the underground through the lightning receptor, and lightning protection of the protected object is achieved. However, in practical applications, the lightning receptor may cause corona phenomena due to the accumulation of electric charges, which may lead to failure of lightning protection.

Disclosure of Invention

The invention aims to provide a gap-variable lightning arrester and a lightning arrester, which have high lightning guiding reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

the gap-variable lightning arrester comprises a lightning guide electrode, a first conductor and a second conductor, wherein the first conductor is used for being electrically connected with a grounding grid, the second conductor is elastically arranged on the first conductor, the lightning guide electrode penetrates through the second conductor and is in insulation connection with the first conductor, a plurality of blades are arranged on the periphery of the second conductor in a surrounding mode, the second conductor is spaced from the lightning guide electrode in a first state, and the blades can drive the second conductor to abut against the lightning guide electrode under the action of wind power in a second state.

Furthermore, the second electric conductor is provided with and is the hemispherical recess, the one end of lightning leading utmost point is provided with and is hemispherical convex part, the convex part is located in the recess, be provided with the head rod on the convex part, the tank bottom of recess is provided with and is used for dodging the hole of dodging of head rod, the head rod passes dodge the hole and with first electric conductor is connected.

Furthermore, an elastic waterproof ring is arranged at the notch position of the groove, the lightning-guiding pole is sleeved with the waterproof ring, and the waterproof ring is used for plugging a gap between the lightning-guiding pole and the second conductor.

Furthermore, a spring is arranged at one end of the second conductor, which is far away from the groove, and the second conductor is elastically connected with the first conductor through the spring.

Further, the springs are multiple and distributed at intervals along the circumferential direction of the first connecting rod.

Further, the blade is provided in a vertical direction, and the blade is connected to a peripheral portion of the second conductor by a second connecting rod.

Further, the blade is arranged at one end of the second conductor, which is far away from the spring.

Furthermore, a conical lightning guiding part is arranged at the top end of the lightning guiding pole.

Furthermore, a grading ring is further arranged on the lightning guiding pole.

Still provide a lightning arrester, include the change clearance arrester, still include downlead and ground net, change clearance arrester and install in the top of shaft tower, change clearance arrester with the ground net passes through the downlead electricity is connected.

Compared with the prior art, the invention has the beneficial effects that:

the gap-variable lightning arrester and the lightning arrester are provided with the lightning guiding pole, the first conductor and the second conductor, wherein the lightning guiding pole is in insulated connection with the first conductor, the second conductor is in elastic connection with the first conductor, the lightning guiding pole is spaced from the second conductor, the second conductor is provided with the blade, and the blade enables the second conductor to be abutted against the lightning guiding pole under the action of wind power so as to realize an electric path. The structure can avoid the problem that the lightning-induced pole cannot smoothly induce lightning due to corona, and disperse a large amount of charges on the lightning-induced pole through wind blowing so as to avoid corona, and has the characteristics of simple structure and high lightning-induced reliability.

Drawings

Fig. 1 is a schematic view of a variable gap lightning receptor according to an embodiment.

Fig. 2 is a schematic view showing the installation of the lightning strike, the first conductor and the second conductor of the embodiment.

Fig. 3 is a schematic view illustrating an installation of the lightning arrester and a tower according to the embodiment.

In the figure:

1. a variable gap lightning receptor; 10. lightning-induced poles; 101. a convex portion; 102. a lightning leading part; 11. a first electrical conductor; 12. a second electrical conductor; 121. a groove; 13. a blade; 14. a second connecting rod; 15. a spring; 16. a first connecting rod; 17. a waterproof ring; 2. a pole tower; 3. and guiding the down wire.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, the variable gap lightning arrester 1 provided by the invention is used for being installed at the top end of a tower 2 of a power transmission line, the variable gap lightning arrester 1 is electrically connected with a grounding grid, and when lightning occurs, the lightning can be introduced into the grounding grid through the variable gap lightning arrester 1, so that the tower 2 is prevented from being struck by lightning, and the power transmission safety is ensured. The gap-variable lightning receptor 1 comprises a lightning conducting pole 10, a first conductor 11 and a second conductor 12, wherein the lightning conducting pole 10, the first conductor 11 and the second conductor 12 are all conductors, and the first conductor 11 is arranged on a tower 2 and is electrically connected with a grounding grid. The second conductor 12 is elastically arranged on the first conductor 11, the second conductor 12 is provided with a groove 121, the groove 121 is hemispherical, a notch of the groove 121 faces upwards and faces the lightning arrester 10, and a dodging hole is formed in the bottom of the groove 121. The first end of the lightning guiding pole 10 is provided with a lightning guiding part 102, the lightning guiding part 102 is conical, and the tip of the lightning guiding part 102 is positioned at the top end of the variable gap lightning arrester 1 so as to guide lightning. The second end of the lightning strike 10 is provided with a protrusion 101, the protrusion 101 is hemispherical, and the diameter of the protrusion 101 is smaller than the diameter of the recess 121, so that the protrusion 101 can be accommodated in the recess 121. One side of the convex part 101 departing from the lightning guiding part 102 is provided with a first connecting rod 16, the first connecting rod 16 is made of an insulating material, and one end of the first connecting rod 16 departing from the convex part 101 penetrates through the avoiding hole on the groove 121 and is fixedly connected with the first conductor 11. The protrusion 101 is located in the groove 121 and spaced from the walls of the groove 121 to space the second electrical conductor 12 from the lightning strike 10. A plurality of blades 13 are circumferentially arranged on the periphery of the second conductor 12, the blades 13 are arranged along the vertical direction, and the blades 13 and the second conductor 12 are connected through a second connecting rod 14. Since the second conductor 12 is elastically connected to the first conductor 11, the blade 13 can drive the second conductor 12 to swing in the radial direction of the first connecting rod 16 by the wind force, and the inner wall of the groove 121 is brought into contact with the protrusion 101. The gap-variable lightning arrester 1 has two states, wherein the first state is a separation state, the lightning leading electrode 10 is separated from the second conductor 12, the second conductor 12 is electrically connected with the grounding grid through the first conductor 11, and the lightning leading electrode 10 and the grounding grid are in an open circuit state, so that a large amount of charges cannot be accumulated on the lightning leading electrode 10, and the problem that the lightning leading electrode 10 cannot effectively lead the lightning due to corona is avoided. In the first state, when a lightning strike occurs, the strong voltage of the lightning can break down the air between the convex part 101 and the groove 121, so that the lightning guiding electrode 10 is conducted with the grounding grid, and the variable-gap lightning arrester 1 can guide the lightning into the grounding grid. The second state is a connection state, and when wind exists in the environment, the blade 13 enables the second conductor 12 to swing under the action of the wind, so that the inner wall of the groove 121 is contacted with the convex part 101, and the lightning guiding electrode 10 is conducted with the grounding grid through the second conductor 12. When lightning strikes the lightning strike 10, the lightning can be directly introduced into the earth grid. In the second state, because wind can blow away a large amount of electric charges gathered on the lightning guiding pole 10, the lightning guiding pole 10 can be prevented from generating corona, and the lightning can be further ensured to be smoothly led into the grounding grid through the variable-gap lightning arrester 1. In the embodiment, the lightning conducting electrode 10 is in insulated connection with the first conductor 11 by arranging the lightning conducting electrode 10, the first conductor 11 and the second conductor 12, the second conductor 12 is in elastic connection with the first conductor 11, the lightning conducting electrode 10 is separated from the second conductor 12, the second conductor 12 is provided with the blade 13, and the blade 13 enables the second conductor 12 to be abutted against the lightning conducting electrode 10 under the action of wind power so as to realize an electric path. The structure can avoid the problem that the lightning-guiding pole 10 cannot smoothly guide lightning due to corona, and blow a large amount of charges on the lightning-guiding pole 10 through wind to avoid corona, and has the characteristics of simple structure and high lightning-guiding reliability.

Specifically, in the present embodiment, there are four blades 13, the four blades 13 are uniformly distributed at intervals along the circumferential direction of the second conductor 12, and each blade 13 is connected to the outer wall of the second conductor 12 through a second connecting rod 14. To ensure that the second conductor 12 can be smoothly driven to swing by wind, the blade 13 is disposed at an end of the second conductor 12 away from the spring 15. One end of the second connecting rod 14 is connected to the blade 13, and the other end of the second connecting rod 14 is connected to the end of the second conductor 12 away from the spring 15. It can be understood that when the second conductor 12 is driven by wind power to swing, the end of the second conductor 12, which is far away from the spring 15, is at the position of maximum swing amplitude, the connection position of the spring 15 and the first conductor 11 is a fixed point, and the second conductor 12 swings around the fixed point. The positioning of the blade 13 at the end remote from the spring 15 is advantageous to increase the force of the wind on the second conductor 12 via the blade 13 away from the fixing point, so that the second conductor 12 is more easily driven by the wind.

Specifically, one end of the second conductor 12 away from the groove 121 is provided with a spring 15, and the second conductor 12 and the first conductor 11 are elastically connected through the spring 15. The first connecting rod 16 is connected to the first conductor 11 through the relief hole and the spring 15. It can be understood that the upper end of the spring 15 is fixedly connected to the second conductor 12, and the lower end of the spring 15 is fixedly connected to the first conductor 11, when wind acts on the blade 13, the blade 13 can drive the second conductor 12 to swing around the axis of the spring 15, so that the protrusion 101 located in the groove 121 can contact with the inner wall of the groove 121 to achieve electrical connection therebetween. In a windless environment, the spring 15 maintains its original arrangement, i.e. the spring 15 is arranged in a vertical direction between the second electrical conductor 12 and the first electrical conductor 11. In windy environment, the blade 13 drives the second conductor 12 to swing under the action of wind force, and the spring 15 is compressed or bent. Of course, in the gas embodiment, a rod with elasticity may be adopted, and in a windy environment, the blade 13 drives the second conductor 12 to swing under the action of wind force, and the rod bends.

In another embodiment, the spring 15 is provided in a plurality, and the plurality of springs 15 are distributed at intervals along the circumference of the first connecting rod 16. It will be appreciated that the spring 15, in addition to providing a resilient connection between the first conductor 11 and the second conductor 12, also acts as a support for the second conductor 12 and the blade 13 provided on the second conductor 12. The arrangement of the plurality of springs 15 is advantageous for improving the mounting stability of the second conductor 12, and simultaneously, the bending strength of each spring 15 can be reduced to facilitate bending under the action of wind.

Specifically, the notch position of recess 121 is provided with waterproof ring 17, and waterproof ring 17 adopts elastic material to make, and waterproof ring 17 is the annular structure, and waterproof ring 17 cover is established on leading thunder utmost point 10, and waterproof ring 17's inboard is connected with leading thunder utmost point 10, and waterproof ring 17's the outside is connected with the one end that second electric conductor 12 is close to the notch to make waterproof ring 17 can carry out the shutoff to the clearance between leading thunder utmost point 10 and the recess 121, avoid the rainwater to get into in the recess 121. Meanwhile, the waterproof ring 17 has elasticity, and when the second conductor 12 swings relative to the groove 121 under the driving of wind power, the waterproof ring 17 can be elastically deformed without influencing the swing of the second conductor 12 relative to the lightning arrester 10.

In particular, the lightning arrester 10 is also provided with a grading ring (not shown in the figure). The voltage is uniformly distributed by arranging the uniform ring to balance stray capacitance to the ground, and the phenomenon that local voltage is too high and is broken down and damaged is avoided.

The remarkable effects of the embodiment are as follows: by arranging the lightning conducting electrode 10, the first conductor 11 and the second conductor 12, the lightning conducting electrode 10 is in insulation connection with the first conductor 11, the second conductor 12 is in elastic connection with the first conductor 11, the lightning conducting electrode 10 is separated from the second conductor 12, the second conductor 12 is provided with a blade 13, and the blade 13 enables the second conductor 12 to be abutted against the lightning conducting electrode 10 under the action of wind power so as to realize an electric path. The structure can avoid the problem that the lightning-guiding pole 10 cannot smoothly guide lightning due to corona, and blow a large amount of charges on the lightning-guiding pole 10 through wind to avoid corona, and has the characteristics of simple structure and high lightning-guiding reliability.

Still provide a lightning arrester, including foretell change clearance arrester 1, this lightning arrester still includes downlead 3 and ground net, becomes clearance arrester 1 and installs at shaft tower 2's top, and shaft tower 2's bottom is provided with connecting terminal, becomes clearance arrester 1 and is connected with connecting terminal electricity, and the one end and the connecting terminal of downlead 3 are connected, and the other end and the ground net of downlead 3 are connected, and then realize becoming clearance arrester 1 and ground net electricity and be connected. The lightning arrester can effectively avoid corona and ensure lightning guiding reliability.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.