A lightning arrester with synergistically enhanced insulation by a combination of a small umbrella and umbrella skirt hydrophobicity

Abstract

The application relates to the technical field of lightning arresters, and discloses a lightning arrester with an insulation function synergistically enhanced by a large umbrella and a small umbrella and umbrella skirt hydrophobicity, which comprises a mounting mechanism, the mounting mechanism comprises a top part fixedly connected to the lightning arrester, and an umbrella skirt two is fixedly connected to the outer wall of the lightning arrester; a flow guide mechanism is mounted on the outer wall of the lightning arrester; and a positioning assembly is mounted on the outer wall of the mounting mechanism. The umbrella skirt one and the umbrella skirt two are arranged, the umbrella skirt two has a large diameter, the creepage distance is increased, and the formation of a continuous water film can be cut off or delayed; when serious contamination or heavy rain occurs, the edge of the umbrella skirt two can naturally form a water dripping breakpoint, the water film between the adjacent umbrella skirt one and the umbrella skirt two cannot be connected, so that the continuous channel of the leakage current is blocked; the diameter of the umbrella skirt one is small, the surface electric field distribution of the umbrella skirt is optimized, and local discharge is prevented; in addition, the design of the small umbrella can make the arc or water drop between the large umbrellas extinguished at a low voltage.

Description

Technical Field

[0001] This invention relates to the field of surge arrester technology, specifically to a surge arrester that combines a large and small umbrella with the hydrophobic properties of the umbrella skirt to synergistically enhance insulation. Background Technology

[0002] Composite insulation surge arresters are the first line of defense in power systems, limiting lightning overvoltages and switching overvoltages and protecting transmission and transformation equipment from overvoltage damage. Their operational reliability directly determines the safety and stability of the power grid. These surge arresters use composite silicone rubber as the outer insulation sheath, and the internal core is composed of stacked zinc oxide resistance sheets, forming an integrated structure of "external insulation protection and internal resistance voltage limiting".

[0003] Surge arresters generally use uniform skirts of equal diameter, resulting in a simple structural form. When equipment becomes dirty and damp, a continuous conductive water film easily forms on the surface of the skirts, inducing surface flashover. In rainy or foggy weather, water droplets can easily bridge between adjacent skirts, causing a sharp increase in leakage current. Under icing conditions, meltwater can easily condense into ice columns, directly shorting the effective creepage distance and significantly reducing the ice flashover voltage. Long-term ultraviolet radiation accelerates the aging of silicone rubber, gradually reducing its surface hydrophobicity. Coupled with insufficient effective creepage distance margin, the overall flashover risk of the equipment increases significantly. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a surge arrester that synergistically enhances insulation through a combination of large and small umbrellas and the hydrophobicity of the umbrella skirt, comprising a surge arrester, with a terminal fixedly connected to the outer wall of the surge arrester, and further comprising:

[0005] The installation mechanism includes a skirt fixedly connected to the outer wall of the surge arrester.

[0006] A current guiding mechanism is installed on the outer wall of the surge arrester, and a current guiding plate is fixedly connected to the outer wall of the second umbrella skirt.

[0007] The positioning component is installed on the outer wall of the mounting mechanism.

[0008] Preferably, the installation mechanism includes:

[0009] The mounting components are installed on the outer wall of the surge arrester.

[0010] Insulation components are installed on the outer wall of the surge arrester;

[0011] The insulating components are arranged in a linear array along the outer wall of the surge arrester body.

[0012] Preferably, the flow guiding mechanism includes:

[0013] A flow guiding component is installed on the outer wall of the insulating component;

[0014] A flow component is installed on the outer wall of the flow guiding component.

[0015] In this process, rainwater first falls on the surface of the insulating component and then leaves the device guided by the flow component.

[0016] Preferably, the positioning component includes:

[0017] Contact components are installed on the outer wall of the insulating components;

[0018] A flow-blocking component is installed on the outer wall of the contact component.

[0019] Rainwater will flow on the surface of the contact component and flow out from the deflector component.

[0020] Preferably, the mounting assembly includes a fixing ring fixedly connected to the outer wall of the surge arrester, and a mounting bracket fixedly connected to the outer wall of the fixing ring.

[0021] Preferably, the insulation component includes several umbrella skirts 1 fixedly connected to the outer wall of the surge arrester, and umbrella skirts 2 fixedly connected to the outer wall of the surge arrester;

[0022] Among them, the diameter of umbrella skirt one is smaller than the diameter of umbrella skirt two, umbrella skirt two is set at an angle, and the angles of adjacent sets of umbrella skirt two are opposite. Umbrella skirt one and umbrella skirt two are arranged alternately.

[0023] Preferably, the flow guiding component includes a flow guiding plate fixedly connected to the outer wall of the umbrella skirt, and a flow guiding groove is provided on the outer wall of the flow guiding plate;

[0024] The deflector is tilted, and its lower end is aligned with the lower end of the second umbrella skirt.

[0025] Preferably, the flow assembly includes a baffle plate fixedly connected to the outer wall of the guide plate, and the outer wall of the baffle plate is provided with a water outlet hole;

[0026] The water outlet is located on the lower side of the guide plate.

[0027] Preferably, the contact assembly includes a contact plate fixedly connected to an outer wall of the umbrella skirt, and a flow groove is provided on the outer wall of the contact plate;

[0028] The tilt direction of the lower end of the contact plate is consistent with the tilt direction of the upper guide plate of the next-level umbrella skirt.

[0029] Preferably, the flow-blocking assembly includes a baffle fixedly connected to the contact plate, and a drip hole is provided on the outer wall of the baffle.

[0030] The present invention has the following beneficial effects:

[0031] (1) By setting umbrella skirt one and umbrella skirt two, the present invention increases the creepage distance by setting umbrella skirt two with a larger diameter. At the same time, it can cut off or delay the formation of continuous water film. When there is severe pollution or heavy rain, the edge of umbrella skirt two will naturally form a dripping break point, which will prevent the water film between adjacent umbrella skirt one and umbrella skirt two from connecting, thereby blocking the continuous channel of leakage current. Meanwhile, the diameter of umbrella skirt one is smaller, which helps to optimize the surface electric field distribution of umbrella skirt and prevent partial discharge. In addition, the design of small umbrella allows the electric arc or water droplets between large umbrellas to be extinguished at a lower voltage.

[0032] (2) By setting a guide plate and a contact plate, when the wind is strong, the rainwater will first come into contact with the surface of the umbrella skirt two and flow towards the lower end of the umbrella skirt two. This will cause the rainwater to flow out from the water outlet, allowing the original rainwater to flow out to one end. Under the influence of the wind, the rainwater will fall on the next umbrella skirt two. In this way, it is prevented that the rainwater that originally dripped vertically from the umbrella skirt two will be tilted due to the influence of the wind when the wind is strong, so that the umbrella skirt two and the fixing ring are connected to each other.

[0033] (3) By setting up a flow channel and a diversion channel, when rainwater falls on the guide plate or contact plate, it will come into contact with the diversion channel or flow channel, which will allow the rainwater to enter the diversion channel or flow channel. The rainwater will flow out through the drip hole and outlet hole inside the diversion channel or flow channel. In this way, it is prevented from being affected by wind when the rainfall is small, which would prevent the rainwater from flowing normally and thus keep it on the surface of umbrella skirt one or umbrella skirt two.

[0034] (4) By setting drip holes and outlet holes, when rainwater falls on the contact plate, it will first flow out from the drip holes and fall on the adjacent umbrella skirt 2. The rainwater that falls on the umbrella skirt 2 will be discharged through the outlet holes, but the discharge location is no longer the adjacent umbrella skirt 1, but the separated umbrella skirt 2. In this way, the humidity at the outer wall of umbrella skirt 1 is reduced, so that umbrella skirt 1 can provide a relatively stable electric field on rainy days. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0038] Figure 3This is a schematic diagram of the overall structure of the umbrella skirt of the present invention;

[0039] Figure 4 This is a schematic diagram of the rainwater flow direction according to the present invention;

[0040] Figure 5 This is a schematic diagram of the overall structure of the present invention;

[0041] Figure 6 This is a schematic diagram of the overall structure of the diversion channel of the present invention;

[0042] Figure 7 This is a schematic diagram of the overall structure of the guide plate of the present invention;

[0043] Figure 8 For the present invention Figure 7 Enlarged diagram of point A in the middle.

[0044] The attached diagram lists the components represented by each number as follows:

[0045] In the diagram: 12. Terminal block; 13. Surge arrester; 2. Mounting mechanism; 21. Mounting assembly; 211. Fixing ring; 212. Mounting bracket; 22. Insulation assembly; 221. Umbrella skirt one; 222. Umbrella skirt two; 3. Flow guiding mechanism; 31. Flow guiding assembly; 311. Flow guide plate; 312. Flow channel; 32. Flow assembly; 321. Baffle; 322. Water outlet; 4. Positioning assembly; 41. Contact assembly; 411. Contact plate; 412. Flow channel; 42. Flow blocking assembly; 421. Baffle; 422. Drip hole. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1, please refer to Figures 1-7 The present invention is a surge arrester that combines a large and small umbrella assembly with a hydrophobic umbrella skirt to synergistically enhance insulation, comprising a surge arrester 13, wherein a terminal block 12 is fixedly connected to the outer wall of the surge arrester 13, and further comprising:

[0048] Installation mechanism 2, including a skirt 222 fixedly connected to the outer wall of the surge arrester 13;

[0049] The current guiding mechanism 3 is installed on the outer wall of the surge arrester 13, and the current guiding plate 311 is fixedly connected to the outer wall of the umbrella skirt 222.

[0050] Positioning component 4 is installed on the outer wall of the mounting mechanism 2;

[0051] Installation mechanism 2 includes:

[0052] Mounting component 21 is installed on the outer wall of the surge arrester 13;

[0053] Insulation component 22 is installed on the outer wall of surge arrester 13;

[0054] Among them, the insulation components 22 are arranged in a linear array along the outer wall of the surge arrester body 13.

[0055] Example 2, please refer to Figures 2-8 This invention relates to a surge arrester that combines large and small umbrellas with a hydrophobic umbrella skirt to synergistically enhance insulation. Based on Embodiment 1, the current-conducting mechanism 3 includes:

[0056] A flow guiding component 31 is installed on the outer wall of the insulating component 22.

[0057] Flow component 32 is installed on the outer wall of flow guide component 31;

[0058] In this process, rainwater first falls on the surface of the insulating component 22 and then leaves the device guided by the flow component 32.

[0059] Positioning component 4 includes:

[0060] Contact component 41 is mounted on the outer wall of insulating component 22;

[0061] A flow-blocking assembly 42 is installed on the outer wall of the contact assembly 41.

[0062] Rainwater will flow on the surface of the contact component 41 and flow out from the deflector component 42.

[0063] Mounting assembly 21 includes a fixing ring 211 fixedly connected to the outer wall of the surge arrester 13, and a mounting bracket 212 fixedly connected to the outer wall of the fixing ring 211.

[0064] The insulating component 22 includes several umbrella skirts 221 fixedly connected to the outer wall of the surge arrester 13, and umbrella skirts 222 fixedly connected to the outer wall of the surge arrester 13.

[0065] Among them, the diameter of umbrella skirt 1 221 is smaller than the diameter of umbrella skirt 222. Umbrella skirt 222 is set at an angle, and the angles of adjacent sets of umbrella skirt 222 are opposite. Umbrella skirt 1 221 and umbrella skirt 222 are arranged alternately. By setting umbrella skirt 1 221 and umbrella skirt 222, the larger diameter of umbrella skirt 222 increases the creepage distance and can cut off or delay the formation of continuous water film. When there is severe pollution or heavy rain, the edge of umbrella skirt 222 will naturally form a dripping break point, which will prevent the water film between adjacent umbrella skirt 1 221 and umbrella skirt 222 from connecting, thereby blocking the continuous path of leakage current. At the same time, the smaller diameter of umbrella skirt 1 221 helps to optimize the surface electric field distribution of the umbrella skirt and prevent partial discharge. In addition, the design of the small umbrella allows the electric arc or water droplets between the large umbrellas to be extinguished at a lower voltage.

[0066] The flow guiding component 31 includes a flow guiding plate 311 fixedly connected to the outer wall of the umbrella skirt 222, and a flow guiding groove 312 is provided on the outer wall of the flow guiding plate 311;

[0067] Among them, the guide plate 311 is tilted, and the lower end of the guide plate 311 is aligned with the lower end of the umbrella skirt 222.

[0068] The flow assembly 32 includes a partition 321 fixedly connected to the outer wall of the guide plate 311, and a water outlet 322 is provided on the outer wall of the partition 321.

[0069] The water outlet 322 is located on the lower side of the guide plate 311.

[0070] Contact assembly 41 includes a contact plate 411 fixedly connected to the outer wall of umbrella skirt 221, and a flow groove 412 is provided on the outer wall of the contact plate 411;

[0071] The tilt direction of the lower end of the contact plate 411 is consistent with the tilt direction of the guide plate 311 on the next-level umbrella skirt 222. By setting the guide plate 311 and the contact plate 411, when the wind is strong, the rainwater will first come into contact with the surface of the umbrella skirt 222 and flow towards the lower end of the umbrella skirt 222. This will cause the rainwater to flow out from the water outlet 322, allowing the original rainwater to flow out to one end. Under the influence of the wind, the rainwater will fall on the next umbrella skirt 222. In this way, it is prevented that the rainwater that originally dripped vertically from the umbrella skirt 222 will tilt due to the influence of the wind when the wind is strong, so that the umbrella skirt 222 and the fixing ring 211 are connected to each other.

[0072] The flow-blocking assembly 42 includes a baffle 421 fixedly connected to the contact plate 411. A drip hole 422 is provided on the outer wall of the baffle 421. By setting the flow channel 412 and the diversion channel 312, when rainwater falls on the guide plate 311 or the contact plate 411, it will come into contact with the diversion channel 312 or the flow channel 412. This will allow the rainwater to enter the diversion channel 312 or the flow channel 412. The rainwater will flow out through the drip hole 422 and the outlet hole 322 along the inside of the diversion channel 312 or the flow channel 412. In this way, it is prevented from being affected by wind when the rainfall is small, so that the rainwater cannot flow normally and will stay on the surface of the umbrella skirt 1 221 or the umbrella skirt 2 222.

[0073] One specific application of this embodiment is as follows: when in use, the mounting bracket 212 is installed in the designated position, and the use begins after installation.

[0074] When it rains, the rainwater first comes into contact with the first umbrella skirt 222. Because the umbrella skirt 222 is tilted, the rainwater flows down its surface towards its lower end. During this flow, the rainwater comes into contact with the drainage channel 312, enters it, and flows out through the outlet 322. If the wind is strong, because the outer edge of the guide plate 311 is much larger than the outer edge of the first umbrella skirt 221, the rainwater flowing from the drainage channel 312 will be affected by the wind. Under the influence of the rain, the rainwater will pass over umbrella skirt 1 221 and fall onto the adjacent umbrella skirt 2 222. Because the two adjacent umbrella skirts 2 222 are tilted in opposite directions, the rainwater will flow out from the outlet hole 322 on the other side. If there is rainwater on umbrella skirt 1 221, the rainwater will enter the flow channel 412 through the contact plate 411 and flow out again from the drip hole 422. The rainwater will fall onto the adjacent umbrella skirt 2 222. When the rainwater passes through the outlet hole 322 on the guide plate 311, it will fall directly onto the next umbrella skirt 2 222.

[0075] By setting umbrella skirt 1 221 and umbrella skirt 222, with umbrella skirt 222 having a larger diameter, the creepage distance is increased. At the same time, it can cut off or delay the formation of a continuous water film. When there is severe dirt or heavy rain, the edge of umbrella skirt 222 will naturally form a dripping break point, which will prevent the water film between adjacent umbrella skirts 1 221 and umbrella skirt 222 from connecting, thereby blocking the continuous path of leakage current. Meanwhile, the smaller diameter of umbrella skirt 1 221 helps to optimize the surface electric field distribution of the umbrella skirt and prevent partial discharge. In addition, the design of the smaller umbrella allows the electric arc or water droplets between the larger umbrellas to be extinguished at a lower voltage.

[0076] By setting the guide plate 311 and the contact plate 411, when the wind is strong, the rainwater will first come into contact with the surface of the umbrella skirt 222 and flow towards the lower end of the umbrella skirt 222. This will cause the rainwater to flow out from the water outlet 322, allowing the original rainwater to flow out to one end. Under the influence of the wind, the rainwater will fall on the next umbrella skirt 222. In this way, it is prevented that the rainwater that originally dripped vertically from the umbrella skirt 222 will be tilted due to the wind force when the wind is strong, so that the umbrella skirt 222 and the fixing ring 211 are connected to each other.

[0077] By setting up the flow channel 412 and the diversion channel 312, when rainwater falls on the guide plate 311 or the contact plate 411, it will come into contact with the diversion channel 312 or the flow channel 412. This will allow the rainwater to enter the diversion channel 312 or the flow channel 412, and the rainwater will flow out through the drip hole 422 and the outlet hole 322 inside the diversion channel 312 or the flow channel 412. In this way, it is prevented from being affected by wind when the rainfall is small, so that the rainwater cannot flow normally and will stay on the surface of the umbrella skirt 1 221 or the umbrella skirt 2 222.

[0078] By setting drip holes 422 and outlet holes 322, when rainwater falls on the contact plate 411, it will first flow out from the drip holes 422 and fall onto the adjacent umbrella skirt 222. The rainwater falling on the umbrella skirt 222 will be discharged through the outlet holes 322, but the discharge location is no longer the adjacent umbrella skirt 1 221, but the separated umbrella skirt 222. In this way, the humidity at the outer wall of umbrella skirt 1 221 is reduced, so that umbrella skirt 1 221 can provide a relatively stable electric field in rainy weather.

[0079] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surge arrester that combines a large and small umbrella with a hydrophobic umbrella skirt to enhance insulation, comprising a surge arrester (13), wherein a terminal block (12) is fixedly connected to the outer wall of the surge arrester (13), characterized in that, Also includes: Installation mechanism (2), the installation mechanism (2) includes a fixed connection to the outer wall of the surge arrester (13), and a second umbrella skirt (222) is fixedly connected to the outer wall of the surge arrester (13). The flow guiding mechanism (3) is installed on the outer wall of the lightning arrester (13), and the flow guiding plate (311) is fixedly connected to the outer wall of the umbrella skirt (222). Positioning component (4) is installed on the outer wall of the mounting mechanism (2).

2. The surge arrester according to claim 1, characterized in that: The installation mechanism (2) includes: Mounting assembly (21) is mounted on the outer wall of the surge arrester (13); An insulating component (22) is installed on the outer wall of the surge arrester (13); Among them, the insulating components (22) are arranged in a linear array along the outer wall of the surge arrester body (13).

3. The surge arrester according to claim 2, which combines large and small umbrellas and features hydrophobic umbrella skirts to synergistically enhance insulation, is characterized in that: The flow guiding mechanism (3) includes: A flow guiding component (31) is installed on the outer wall of the insulating component (22); A flow component (32) is installed on the outer wall of the flow guiding component (31); In this process, rainwater first falls on the surface of the insulating component (22) and then leaves the device guided by the flow component (32).

4. The surge arrester according to claim 3, which combines large and small umbrellas and the hydrophobicity of the umbrella skirt to synergistically enhance insulation, is characterized in that: The positioning component (4) includes: Contact assembly (41), said contact assembly (41) is mounted on the outer wall of insulating assembly (22); A flow-blocking assembly (42) is installed on the outer wall of the contact assembly (41); Rainwater will flow on the surface of the contact component (41) and flow out from the deflector component (42).

5. A surge arrester with synergistic insulation enhancement of large and small umbrellas and hydrophobic skirts as described in claim 4, characterized in that: The mounting assembly (21) includes a fixing ring (211) fixedly connected to the outer wall of the surge arrester (13), and a mounting bracket (212) is fixedly connected to the outer wall of the fixing ring (211).

6. A surge arrester with synergistic insulation enhancement of large and small umbrellas and hydrophobic skirts as described in claim 5, characterized in that: The insulating component (22) includes several umbrella skirts (221) fixedly connected to the outer wall of the surge arrester (13), and umbrella skirts (222) are fixedly connected to the outer wall of the surge arrester (13). Among them, the diameter of umbrella skirt one (221) is smaller than the diameter of umbrella skirt two (222). Umbrella skirt two (222) is set at an angle, and the angles of adjacent sets of umbrella skirt two (222) are opposite. Umbrella skirt one (221) and umbrella skirt two (222) are arranged alternately.

7. A surge arrester with synergistic insulation enhancement of large and small umbrella combination and umbrella skirt hydrophobicity as described in claim 6, characterized in that: The flow guiding component (31) includes a flow guiding plate (311) fixedly connected to the outer wall of the umbrella skirt (222), and a flow guiding groove (312) is provided on the outer wall of the flow guiding plate (311). Among them, the guide plate (311) is tilted, and the lower end of the guide plate (311) is aligned with the lower end of the umbrella skirt (222).

8. A surge arrester with synergistic insulation enhancement of large and small umbrella combination and umbrella skirt hydrophobicity as described in claim 7, characterized in that: The flow component (32) includes a partition (321) fixedly connected to the outer wall of the guide plate (311), and the outer wall of the partition (321) is provided with a water outlet (322). The water outlet (322) is located on the lower side of the guide plate (311).

9. A surge arrester with synergistic insulation enhancement of large and small umbrella combination and umbrella skirt hydrophobicity as described in claim 6, characterized in that: The contact assembly (41) includes a contact plate (411) fixedly connected to the outer wall of the umbrella skirt (221), and a flow groove (412) is provided on the outer wall of the contact plate (411). The tilting direction of the lower end of the contact plate (411) is consistent with the tilting direction of the guide plate (311) on the next level umbrella skirt (222).

10. A surge arrester with synergistic insulation enhancement of large and small umbrella combinations and hydrophobic umbrella skirts as described in claim 9, characterized in that: The flow-blocking assembly (42) includes a baffle (421) fixedly connected to the contact plate (411), and a drip hole (422) is provided on the outer wall of the baffle (421).

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