Zinc oxide resistor disc powder lightning arrester with high self-maintenance adaptability

Abstract

The invention relates to the technical field of zinc oxide lightning arresters, in particular to a zinc oxide resistor disc powder lightning arrester with high self-maintenance adaptability, which comprises a plurality of resistor discs, two rubber sealing blocks, two wiring bolts, two electrodes, an outer sleeve and a plurality of skirt edges, a plurality of obliquely arranged wind power blades are connected between the two mounting ring pieces, a plurality of connecting rods are mounted at the tops of the mounting ring pieces located above the wind power blades, the connecting rods are located on one side of the skirt edge, and soft rubber strip scraping plates are elastically connected to the surfaces of the connecting rods. According to the scheme, the surrounding wind blades and the soft rubber strip scrapers are arranged on the periphery of the zinc oxide lightning arrester, the wind blades are stressed to drive the soft rubber strip scrapers to rotate, so that the soft rubber strip scrapers clean dust attached to the outer surface of the zinc oxide lightning arrester, manual maintenance is not needed, and the working efficiency is improved. Therefore, the self-cleaning operation of the zinc oxide arrester can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of zinc oxide lightning arresters, in particular to a zinc oxide resistor powder lightning arrester with strong self-maintenance adaptability. Background Art

[0002] Zinc oxide arresters are the most commonly used type of arrester in modern power systems. Their core component is a resistor made of zinc oxide powder. Multiple resistors are installed in the arrester's housing, leveraging their nonlinear volt-ampere characteristics. Under normal voltage, they exhibit high resistance (allowing only microampere-level leakage current). In the event of an overvoltage (such as a lightning strike), they instantly become low resistance, discharging significant current and limiting voltage amplitude, protecting equipment insulation. In the prior art, zinc oxide lightning arresters are installed on power equipment such as substations, transmission lines, generators, and transformer protection. Most of the above equipment is located in the external environment, so the zinc oxide lightning arrester is also in the external environment. Over time, a large amount of dust will accumulate on the surface of the zinc oxide lightning arrester. The accumulation of dust will cover the surface of the lightning arrester, affecting its heat dissipation effect and causing the internal temperature of the lightning arrester to rise. Long-term high-temperature operation will accelerate the aging of the lightning arrester and reduce its protection performance. Therefore, manual maintenance is required. Zinc oxide lightning arresters are often located at high places. Due to the limited height of maintenance personnel, maintenance personnel must also contact height adjustment equipment to transport maintenance personnel to the high place, thereby increasing the cumbersomeness and cost of preparatory work before maintaining zinc oxide lightning arresters at high places. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a zinc oxide resistor powder lightning arrester with strong self-maintenance adaptability.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a zinc oxide resistor powder lightning arrester with strong self-maintenance adaptability, comprising multiple resistors, two rubber sealing blocks, two wiring bolts, two electrodes, a jacket and multiple skirts, multiple skirts are all sleeved on the surface of the jacket, the bottom end of the jacket is movably sleeved with two mounting rings, the two mounting rings are arranged in sequence from top to bottom, multiple inclined wind blades are connected between the two mounting rings, multiple wind blades are arranged at equal angles at the outer edges of the mounting rings, multiple connecting rods are installed on the top of the mounting ring above the wind blades, the tops of multiple connecting rods are movably connected to the top of the jacket, the connecting rod is located on one side of the skirt, the surface of the connecting rod is elastically connected to a soft rubber scraper, the surfaces of the soft rubber scraper are in contact with the top of the skirt and the outside of the jacket respectively.

[0005] Preferably, the plurality of resistor sheets are installed inside the outer shell, the tails of the plurality of resistor sheets are connected in sequence, the resistor sheets at the initial end and the terminal end are connected to electrodes, one end of each of the two electrodes is installed with a wiring bolt, one end of each of the two wiring bolts respectively penetrates the surface of the outer shell and extends to its outside, and a rubber sealing block is installed inside the outer shell and between the two electrodes.

[0006] Preferably, the bottom and top ends of the outer sleeve are respectively movably provided with a first movable ring and two second movable rings, and fixed rings are provided above and below the first movable ring and the two second movable rings, and the six fixed rings are all installed on the outside of the outer sleeve, and the top ends of multiple connecting rods are connected to the side of the first movable ring, and the two mounting rings are respectively fixed on the outer circular surfaces of the two second movable rings.

[0007] Preferably, the top and bottom of the first movable ring and the two second movable rings are each provided with a first ball groove, and the surfaces of the six fixed rings are each provided with a second ball groove corresponding to the position of the first ball groove, and a plurality of balls are provided between the second ball groove and the first ball groove.

[0008] Preferably, a connecting block corresponding to the position of the outer sleeve is provided on one side of the connecting rod, a square hole is passed through the surface of the connecting block, a square rod is inserted into the square hole, and fixed blocks are installed at both ends of the square rod, one end of the two fixed blocks is installed on the surface of the connecting rod, and a compression spring is provided on the surface of the square rod, and the compression spring is respectively connected to the surface of the fixed block and the connecting block, and one end of the soft rubber scraper is connected to the connecting block.

[0009] Compared with the prior art, the present invention has the following beneficial effects: This solution arranges multiple surrounding wind blades and multiple soft rubber scrapers around the zinc oxide lightning arrester. The wind in the external environment will generate a deflection force on the wind blades. After being subjected to the force, the wind blades apply torque to the two mounting rings. The two mounting rings drive the multiple soft rubber scrapers to rotate through multiple connecting rods. The soft rubber scrapers themselves have good elasticity and wear resistance. The soft rubber scrapers can fit tightly with the outer arc surface of the zinc oxide lightning arrester, so that the soft rubber scrapers can clean the dust attached to the outer surface of the zinc oxide lightning arrester. The self-cleaning operation of the zinc oxide lightning arrester can be achieved without manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the main cross-sectional view of the present invention; Figure 2 It is a schematic diagram of the connection structure of the wind blade, the mounting ring and the second movable ring of the present invention; Figure 3 This is a schematic structural diagram of the connection between the connecting block and the soft rubber strip scraper of the present invention; Figure 4 This is a schematic structural diagram of the connection between the square rod and the compression spring of the present invention.

[0011] In the figure: compression spring 1, resistor 2, ball 3, rubber sealing block 4, soft rubber scraper 5, connecting bolt 6, electrode 7, outer sleeve 8, fixed ring 9, first movable ring 10, connecting rod 11, connecting block 12, skirt 13, fixed block 14, square rod 15, mounting ring 16, wind blade 17, second movable ring 18. DETAILED DESCRIPTION

[0012] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0013] like Figure 1-4 The zinc oxide resistor powder lightning arrester shown has strong self-maintenance adaptability, including multiple resistors 2, two rubber sealing blocks 4, two wiring bolts 6, two electrodes 7, a jacket 8 and multiple skirts 13. The multiple skirts 13 are all sleeved on the surface of the jacket 8, and the multiple resistors 2 are installed inside the jacket 8. The ends of the multiple resistors 2 are connected in sequence. The resistors 2 at the initial end and the end are connected to the electrodes 7. One end of the two electrodes 7 is installed with a wiring bolt 6. One end of the two wiring bolts 6 passes through the surface of the jacket 8 and extends to its outside. Rubber sealing blocks 4 are installed inside the jacket 8 and between the two electrodes 7. The rubber sealing blocks 4 are used to seal the storage space of the multiple resistors 2 located between the two electrodes 7 to prevent external dust from adhering to the surface of the resistor 2, thereby protecting the resistor 2. The two electrodes 7 provide for the conduction of current. The two wiring bolts 6 are respectively connected to the wires and electrical equipment. The skirt 13 can reduce moisture residue and reduce the risk of freezing and cracking of the lightning arrester.

[0014] The bottom movable sleeve of the outer sleeve 8 is provided with two mounting rings 16, and the two mounting rings 16 are arranged in sequence from top to bottom. A plurality of obliquely arranged wind blades 17 are connected between the two mounting rings 16, and a plurality of wind blades 17 are arranged at equal angles at the outer side edges of the mounting rings 16. A plurality of connecting rods 11 are installed on the top of the mounting ring 16 above the wind blades 17. The top ends of the plurality of connecting rods 11 are movably connected to the top end of the outer sleeve 8. The connecting rods 11 are located on one side of the skirt 13. The surface of the connecting rods 11 is elastically connected to a soft rubber scraper 5. The surfaces of the soft rubber scraper 5 are in contact with the top of the skirt 13 and the outside of the outer sleeve 8 respectively. The wind in the natural environment will produce a deflection force on the wind blades 17. After being subjected to the force, the wind blades 17 apply a torque force to the two mounting rings 16. The two mounting rings 16 drive multiple soft rubber scrapers 5 to rotate through multiple connecting rods 11. The soft rubber scrapers 5 themselves have good elasticity and wear resistance. The soft rubber scrapers 5 can fit tightly with the outer arc surface of the jacket 8 and the skirt 13 of the zinc oxide lightning arrester, so that the soft rubber scrapers clean the dust attached to the outer surface of the zinc oxide lightning arrester. Therefore, the dust on the outside of the zinc oxide lightning arrester is cleaned by the wind generated in the natural environment without manual cleaning, and the self-maintenance operation of the zinc oxide lightning arrester is completed.

[0015] The bottom and top ends of the outer sleeve 8 are respectively movably provided with a first movable ring 10 and two second movable rings 18. Fixed rings 9 are provided above and below the first movable ring 10 and the two second movable rings 18. The six fixed rings 9 are all installed on the outside of the outer sleeve 8. The top ends of multiple connecting rods 11 are connected to the side of the first movable ring 10. The two mounting rings 16 are respectively fixed on the outer circular surfaces of the two second movable rings 18. The six fixed rings 9 respectively limit the first movable ring 10 and the two second movable rings 18 in the vertical direction, thereby improving the stability of the two mounting rings 16 and the multiple connecting rods 11 during rotation.

[0016] The first movable ring 10 and the two second movable rings 18 are provided with first ball grooves on the top and bottom, and the surfaces of the six fixed rings 9 are provided with second ball grooves corresponding to the positions of the first ball grooves. A plurality of balls 3 are provided between the second ball grooves and the first ball grooves. The arrangement of the plurality of balls 3 reduces the friction of the first movable ring 10 and the two second movable rings 18 when sliding on the surfaces of the six fixed rings 9, and improves the stability of the wind blades 17 after being driven by wind to drive the first movable ring 10 and the two second movable rings 18 to rotate.

[0017] One side of the connecting rod 11 is provided with a connecting block 12 corresponding to the position of the outer sleeve 8. A square hole is passed through the surface of the connecting block 12, and a square rod 15 is inserted into the square hole. Fixed blocks 14 are installed at both ends of the square rod 15. One end of the two fixed blocks 14 is installed on the surface of the connecting rod 11. A compression spring 1 is provided on the surface of the square rod 15. The compression spring 1 is connected to the surface of the fixed block 14 and the connecting block 12 respectively. One end of the soft rubber scraper 5 is connected to the connecting block 12. When the bottom of the soft rubber scraper 5 contacts the top of the skirt 13, the compression spring 1 is in a compressed state. Therefore, the compression spring 1 itself has elastic potential energy to push the soft rubber scraper 5 to press on the top of the skirt 13, which has a pre-tightening effect on the soft rubber scraper 5, thereby improving the close fit between the soft rubber scraper 5 and the skirt 13, and improving the efficiency of the soft rubber scraper 5 in cleaning dust; the cooperation between the square rod 15 and the square hole prevents the connecting block 12 from moving in a circular arc on the square rod 15, thereby improving the stability of the soft rubber scraper 5 in fitting with the skirt 13 and the outer sleeve 8 during rotation.

[0018] In this solution, the outer jacket 8 and the skirt 13 are supported by silicone rubber, which can improve the insulation performance, pollution resistance, explosion-proof performance, wear resistance of the zinc oxide lightning arrester, and enhance its sealing reliability and aging resistance, so that the high zinc oxide lightning arrester has strong adaptability in the external environment.

[0019] This solution is applicable to power equipment in onshore wind farms with an average annual wind speed of 1.5-5.4m / s.

[0020] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A zinc oxide resistor powder arrester with strong self-maintenance adaptability, comprising a plurality of resistors (2), two rubber sealing blocks (4), two terminal bolts (6), two electrodes (7), a jacket (8) and a plurality of skirts (13), wherein the plurality of skirts (13) are all sleeved on the surface of the jacket (8), characterized in that: The bottom movable sleeve of the outer sleeve (8) is provided with two mounting rings (16), and the two mounting rings (16) are arranged in sequence from top to bottom. A plurality of tilted wind blades (17) are connected between the two mounting rings (16), and the plurality of wind blades (17) are arranged at equal angles on the outer sides of the mounting rings (16). A plurality of connecting rods (11) are installed on the top of the mounting rings (16) above the wind blades (17). The top ends of the plurality of connecting rods (11) are movably connected to the top end of the outer sleeve (8). The connecting rods (11) are located on one side of the skirt (13). The surface of the connecting rods (11) is elastically connected to a soft rubber scraper (5), and the surfaces of the soft rubber scraper (5) are in contact with the top of the skirt (13) and the outside of the outer sleeve (8) respectively.

2. A zinc oxide resistor powder arrester with strong self-maintenance adaptability according to claim 1, characterized in that: The plurality of resistor sheets (2) are installed inside the outer jacket (8), and the tails of the plurality of resistor sheets (2) are connected in sequence. The resistor sheets (2) at the initial end and the terminal end are connected to electrodes (7), and one end of each of the two electrodes (7) is installed with a wiring bolt (6), and one end of each of the two wiring bolts (6) respectively penetrates the surface of the outer jacket (8) and extends to the outside thereof. A rubber sealing block (4) is installed inside the outer jacket (8) and between the two electrodes (7).

3. The zinc oxide resistor powder arrester with strong self-maintenance adaptability according to claim 1, characterized in that: The bottom and top ends of the outer sleeve (8) are movably provided with a first movable ring (10) and two second movable rings (18), and fixed rings (9) are provided above and below the first movable ring (10) and the two second movable rings (18). The six fixed rings (9) are all installed on the outside of the outer sleeve (8), and the top ends of the plurality of connecting rods (11) are connected to the side of the first movable ring (10). The two mounting rings (16) are fixedly sleeved on the outer circumferential surfaces of the two second movable rings (18).

4. The zinc oxide resistor powder arrester with strong self-maintenance adaptability according to claim 3, characterized in that: The first movable ring (10) and the two second movable rings (18) are each provided with a first ball groove on the top and bottom, and the surfaces of the six fixed rings (9) are each provided with a second ball groove corresponding to the position of the first ball groove, and a plurality of balls (3) are provided between the second ball groove and the first ball groove.

5. The zinc oxide resistor powder arrester with strong self-maintenance adaptability according to claim 1, characterized in that: A connecting block (12) corresponding to the position of the outer sleeve (8) is provided on one side of the connecting rod (11), a square hole is passed through the surface of the connecting block (12), a square rod (15) is inserted into the square hole, and a fixing block (14) is installed at both ends of the square rod (15), one end of each of the two fixing blocks (14) is installed on the surface of the connecting rod (11), and a compression spring (1) is movably sleeved on the surface of the square rod (15), and the compression spring (1) is respectively connected to the surface of the fixing block (14) and the connecting block (12), and one end of the soft rubber strip scraper (5) is connected to the connecting block (12).

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