Lightning arrester assembly with moisture-proof structure

Abstract

The utility model relates to the technical field of high-voltage power transmission lines, in particular to a lightning arrester assembly with a moisture-proof structure, which comprises a top cover, the bottom end of the top cover is in threaded connection with the top end of a protective shell, a first filtering mechanism is embedded at the top end of the inner wall of the protective shell, and a limiting insertion plate is welded in the middle of the inner wall of the protective shell. A lightning arrester body is inserted into the inner wall of the limiting insertion plate, a spiral plate is arranged at the bottom end of the protection shell, and the inner wall of the spiral plate is in threaded connection with a base. According to the improved lightning arrester assembly, water vapor intruding from a gap at the joint of the top cover and the protective shell enters from the filter holes formed in the surface of the filter box and is absorbed by the ceramsite, so that the dryness of the interior of the protective shell is kept, water vapor intruding from a gap at the joint of the base and the protective shell is subjected to heat insulation through the heat insulation layer, and then moisture is absorbed by the activated carbon; and finally, the water enters the protective shell through the waterproof breathable layer, so that moisture is prevented, breathability and heat insulation are achieved, and the service life of the assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage power transmission lines, in particular to a lightning arrester component with a moisture-proof structure. Background Art

[0002] The electricity generated by the power plant is not only used by people nearby, but also transmitted to faraway places to meet more needs. This electricity cannot be directly transmitted through ordinary wires, but must be transmitted using high-voltage transmission lines. Generally, the transmission voltage below 220 kV is called high-voltage transmission, the transmission voltage between 330 and 765 kV is called ultra-high-voltage transmission, and the transmission voltage above 1000 kV is called ultra-high-voltage transmission. When the electricity is transmitted to the place where it is used, the voltage must be lowered before it can be used.

[0003] Lightning arrester is an electrical device used to protect electrical equipment from high transient overvoltage hazards during lightning strikes, and to limit the follow-on time, and often also limit the follow-on amplitude. Lightning arrester is sometimes also called overvoltage protector, overvoltage limiter. AC gapless metal oxide lightning arrester is used to protect the insulation of AC power transmission and transformation equipment from lightning overvoltage and operating overvoltage damage. It is suitable for overvoltage protection of transformers, transmission lines, distribution panels, switch cabinets, power meter boxes, vacuum switches, shunt compensation capacitors, rotating motors and semiconductor devices.

[0004] In the process of realizing the utility model, the inventors found that the prior art had the following problems: 1. After long-term use, the existing lightning arrester components are easily invaded by water vapor from the outside, thereby causing damage to their internal components; 2. The existing lightning arrester components are moisture-proof and waterproof, and are often sealed. During long-term use, the internal temperature is high, and with the intrusion of water vapor, it will become damp and stuffy, reducing the life of the components. Utility Model Content

[0005] The purpose of the utility model is to provide a lightning arrester assembly with a moisture-proof structure to solve the problem that some lightning arrester assemblies proposed in the above background technology are easily invaded by water vapor from the outside after long-term use, thereby causing damage to their internal parts, and the existing lightning arrester assemblies are moisture-proof and waterproof, and are often sealed. During long-term use, the internal temperature is high, and with the invasion of water vapor, it will become damp and stuffy, reducing the life of the assembly. To achieve the above purpose, the utility model provides the following technical solutions: the lightning arrester assembly with a moisture-proof structure includes a top cover, the bottom end of the top cover is threadedly connected to the top of the protective shell, the top of the inner wall of the protective shell is embedded with a first filtering mechanism, the middle part of the inner wall of the protective shell is welded with a limiting plug plate, the inner wall of the limiting plug plate is plugged with a lightning arrester body, the bottom end of the protective shell is provided with a spiral plate, the inner wall of the spiral plate is threadedly connected with a base, and the top of the base is provided with a second filtering mechanism.

[0006] Further preferably, sealing rings are bonded to the top wall of the top cover and the bottom wall of the base.

[0007] Further preferably, the top of the protective shell is provided with a plurality of slots in an annular shape, and the outer wall of the bottom end of the top cover is provided with a plurality of blocks in an annular shape, and the slots of the protective shell and the blocks of the top cover are threadedly connected by screws.

[0008] Further preferably, the first filter mechanism is composed of a filter box and ceramsite, wherein the filter box is embedded in the inner wall of the protective shell, and a plurality of filter holes are opened on the surface of the filter box, and the interior of the filter box is also filled with ceramsite.

[0009] Further preferably, the second filter mechanism is composed of a filter mesh frame, a waterproof and breathable layer, an activated carbon layer, and a thermal insulation layer, wherein the filter mesh frame is embedded in the top of the base, and the interior of the filter mesh frame is filled with a waterproof and breathable layer, an activated carbon layer and a thermal insulation layer from top to bottom.

[0010] Further preferably, the annular outer wall of the base located below the second filtering mechanism is provided with a connecting ring plate, and a plurality of studs are provided on the top of the connecting ring plate, and the inner walls of the studs are also screwed to the bolts, and the base is threadedly connected to the screw ring plate provided at the bottom end of the protective shell through the studs and bolts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the card block provided on the top cover is inserted into the card slot provided on the protective shell, and the protective shell and the top cover are screwed together. In this process, the sealing ring bonded to the top wall of the top cover 1 will fit tightly to the top of the protective shell, and be squeezed to make up the gap between the two, thereby enhancing the sealing of the connection between the protective shell and the top cover, and the water vapor invading from the gap between the top cover and the protective shell will directly enter from the filter holes opened on the surface of the filter box that fits the gap, thereby reaching the inside of the filter box and contacting with the ceramsite. Because the ceramsite itself has the characteristics of being porous and having good water absorption performance, the invading water vapor can be absorbed at the first time when the ceramsite contacts with the water vapor, thereby maintaining the dryness of the inside of the protective shell.

[0013] In the utility model, the connecting ring plate and the studs provided on the base are inserted into the through holes opened on the surface of the screw ring plate provided on the protective shell, and then the base and the protective shell are screwed together using bolts. At this time, the sealing ring bonded to the bottom wall of the base will fit tightly to the bottom of the protective shell, thereby enhancing the sealing of the connection between the protective shell and the base. The water vapor invading the gap between the base and the protective shell will first pass through the thermal insulation layer to isolate the heat contained in the water vapor, and then the water vapor will directly rise and invade into the activated carbon layer, thereby being dried by the activated carbon to restore the dry gas. At this time, the dry gas will rise to the waterproof and breathable layer, and enter the interior of the protective shell through the air vents on the surface of the waterproof and breathable layer, thereby increasing the air permeability of the originally sealed interior of the protective shell while preventing moisture, isolating a certain amount of heat, and extending the service life of the lightning arrester assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the second filtering mechanism of the utility model.

[0018] In the figure: 1, top cover; 101, block; 2, protective shell; 201, slot; 3, first filter mechanism; 301, filter box; 302, expanded clay; 4, limiting plug plate; 5, lightning arrester body; 6, screw plate; 7, base; 701, connecting ring plate; 702, stud; 703, bolt; 8, second filter mechanism; 801, filter frame; 802, waterproof and breathable layer; 803, activated carbon layer; 804, thermal insulation layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4The utility model provides a technical solution: a lightning arrester assembly with a moisture-proof structure, including a top cover 1, the bottom end of the top cover 1 is threadedly connected to the top end of a protective shell 2, a first filtering mechanism 3 is embedded at the top end of the inner wall of the protective shell 2, a limiting plug plate 4 is welded to the middle of the inner wall of the protective shell 2, a lightning arrester body 5 is plugged into the inner wall of the limiting plug plate 4, a screw ring plate 6 is provided at the bottom end of the protective shell 2, a base 7 is threadedly connected to the inner wall of the screw ring plate 6, and a second filtering mechanism 8 is provided at the top end of the base 7.

[0021] In this embodiment, Figure 3 As shown, the top wall of the top cover 1 and the bottom wall of the base 7 are both bonded with sealing rings; it should be noted that when using the lightning arrester assembly of the utility model, the lightning arrester body 5 is first plugged into the inner wall of the limiting plug plate 4 for fixing, and then the top cover 1 and the base 7 are respectively threadedly connected to the top and bottom ends of the protective shell 2 in turn. During this process, the sealing ring bonded to the top wall of the top cover 1 will fit tightly to the top of the protective shell 2, and be squeezed to make up the gap between the two, thereby enhancing the sealing of the connection between the protective shell 2 and the top cover 1, and the sealing ring bonded to the bottom wall of the base 7 will fit tightly to the bottom of the protective shell 2, and will also be squeezed to make up the gap between the two, thereby enhancing the sealing of the connection between the protective shell 2 and the base 7.

[0022] In this embodiment, Figure 1 and Figure 3 As shown, the top of the protective shell 2 is provided with a plurality of grooves 201 in an annular shape, and the outer wall of the bottom end of the top cover 1 is provided with a plurality of blocks 101 in an annular shape, and the grooves 201 provided on the protective shell 2 and the blocks 101 provided on the top cover 1 are threadedly connected by screws; it should be noted that when assembling the entire lightning arrester assembly, the operator is required to first align the blocks 101 provided on the top cover 1 with the grooves 201 provided on the top of the protective shell 2 one by one, and insert the blocks 101 into the grooves 201 located directly below them, so that the outer wall of the blocks 101 is tightly fitted to the inner wall of the grooves 201, and at the same time, the operator uses screws to insert them into the screw holes at the overlapping parts of the blocks 101 and the grooves 201, and tighten them, so as to thread the protective shell 2 and the top cover 1 together, and complete the sealing operation of the upper part of the protective shell 2.

[0023] In this embodiment, Figure 2 and Figure 3As shown, the first filter mechanism 3 is composed of a filter box 301 and ceramsite 302, wherein the filter box 301 is embedded in the inner wall of the protective shell 2, and a plurality of filter holes are opened on the surface of the filter box 301, and the interior of the filter box 301 is also filled with ceramsite 302; it should be noted that before the protective shell 2 and the top cover 1 are threaded together, the operator can first embed the filter box 301 filled with ceramsite 302 and place it on the inner wall of the protective shell 2, and then screw the protective shell 2 and the top cover 1, and the entire first filter mechanism 3 can absorb water vapor during the use of the lightning arrester assembly, and the long With the use of time, the sealing ring bonded to the top wall of the top cover 1 may age, thereby weakening its own sealing. At this time, external water vapor can easily invade into the interior of the protective shell 2 through the gap at the connection between the top cover 1 and the protective shell 2. At the same time, water vapor will directly enter from the filter holes opened on the surface of the filter box 301 attached to the gap, thereby reaching the interior of the filter box 301 and contacting with the expanded clay 302. Because the expanded clay 302 itself has the characteristics of being porous and having good water absorption performance, the expanded clay 302 can absorb the invading water vapor as soon as it comes into contact with the water vapor, thereby maintaining the dryness of the interior of the protective shell 2.

[0024] In this embodiment, Figure 4 As shown, the second filter mechanism 8 is composed of a filter frame 801, a waterproof and breathable layer 802, an activated carbon layer 803, and a heat-insulating layer 804, wherein the filter frame 801 is embedded in the top of the base 7, and the inside of the filter frame 801 is filled with a waterproof and breathable layer 802, an activated carbon layer 803 and a heat-insulating layer 804 from top to bottom; it should be noted that when the protective shell 2 is screwed to the base 7, the second filter mechanism 8 embedded in the top of the base 7 will also be placed on the inner wall of the protective shell 2, and the three filter layers filled with the second filter mechanism 8 can play a role of ventilation, moisture-proof and heat-insulating during the use of the lightning arrester assembly, and after long-term use, it is bonded to the bottom of the base 7. The sealing ring of the wall will age, thereby weakening its own sealing. At this time, external water vapor will easily invade into the interior of the protective shell 2 through the gap at the connection between the base 7 and the protective shell 2. At the same time, the water vapor will first pass through the insulation layer 804 to isolate the heat contained in the water vapor, and then the water vapor will directly rise and invade into the activated carbon layer 803, thereby being absorbed by the activated carbon to restore the dry gas. At this time, the dry gas will rise to the waterproof and breathable layer 802, and enter into the interior of the protective shell 2 through the air holes on the surface of the waterproof and breathable layer 802, thereby increasing the air permeability of the originally sealed interior of the protective shell 2 while preventing moisture, and isolating a certain amount of heat, thereby extending the service life of the lightning arrester assembly.

[0025] In this embodiment, Figure 2 and Figure 3As shown, the annular outer wall of the base 7 located below the second filtering mechanism 8 is provided with a connecting ring plate 701, and a plurality of studs 702 are also provided on the top of the connecting ring plate 701, and the inner wall of the stud 702 is also screwed to the bolt 703, and the base 7 is threadedly connected with the screw ring plate 6 provided at the bottom end of the protective shell 2 through the provided studs 702 and the bolts 703; it should be noted that when assembling the entire lightning arrester assembly, the operator is required to first align the stud 702 on the top of the connecting ring plate 701 provided on the base 7 with the through hole opened on the surface of the screw ring plate 6 provided at the bottom end of the protective shell 2, and then insert the top end of the base 7 into the interior of the protective shell 2, at the same time, the stud 702 on the top of the connecting ring plate 701 will also be inserted into the through hole opened on the surface of the screw ring plate 6 at the same time, so that the connecting ring plate 701 and the screw ring plate 6 fit each other, and then the operator uses the bolt 703, inserts it into the inside of the stud 702 and tightens it, so as to thread the base 7 and the protective shell 2 together.

[0026] The use method and advantages of the utility model: When the lightning arrester assembly with a moisture-proof structure is used, the working process is as follows:

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, first, the arrester body 5 is inserted into the inner wall of the limiting plug plate 4 for fixing, and then the block 101 provided on the outer wall of the bottom end of the top cover 1 is inserted into the slot 201 provided on the top of the protective shell 2, and a threaded connection is formed by screws, and at the same time, the base 7 is threadedly connected to the protective shell 2 through the connecting ring plate 701 and the stud 702 and the screw ring plate 6. At this time, the arrester assembly can be used normally. During its use, the first filtering mechanism 3 can absorb the water vapor invading the gap between the top cover 1 and the protective shell 2 through the ceramsite 302 filled inside it, thereby keeping the protective shell 2 The dryness of the interior, and the three filter layers filled by the second filter mechanism 8 can play the role of ventilation, moisture-proof and heat-insulating during the use of the lightning arrester assembly. The water vapor that invades from the gap at the connection between the base 7 and the protective shell 2 will first pass through the insulation layer 804 for insulation, and then be absorbed by the activated carbon to restore the dry gas, and finally rise to the waterproof and breathable layer 802, and enter the interior of the protective shell 2 through the air vents on the surface of the waterproof and breathable layer 802, thereby increasing the air permeability of the originally sealed interior of the protective shell 2 while preventing moisture, and isolating a certain amount of heat, thereby extending the service life of the lightning arrester assembly.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lightning arrester assembly with a moisture-proof structure, comprising a top cover (1), characterized in that: The bottom end of the top cover (1) is threadedly connected to the top end of the protective shell (2); a first filtering mechanism (3) is embedded at the top end of the inner wall of the protective shell (2); a limiting plug plate (4) is welded to the middle of the inner wall of the protective shell (2); the inner wall of the limiting plug plate (4) is plugged with a lightning arrester body (5); a screw plate (6) is provided at the bottom end of the protective shell (2); the inner wall of the screw plate (6) is threadedly connected to a base (7); and a second filtering mechanism (8) is provided at the top end of the base (7).

2. The lightning arrester assembly with moisture-proof structure according to claim 1, characterized in that: The top wall of the top cover (1) and the bottom wall of the base (7) are both bonded with sealing rings.

3. The arrester assembly with moisture-proof structure according to claim 1, characterized in that: The top of the protective shell (2) is provided with a plurality of slots (201) in an annular shape, and the outer wall of the bottom end of the top cover (1) is provided with a plurality of blocks (101) in an annular shape, and the slots (201) provided on the protective shell (2) and the blocks (101) provided on the top cover (1) are threadedly connected via screws.

4. The lightning arrester assembly with moisture-proof structure according to claim 1, characterized in that: The first filtering mechanism (3) is composed of a filter box (301) and ceramsite (302), wherein the filter box (301) is embedded in the inner wall of the protective shell (2), and a plurality of filtering holes are opened on the surface of the filter box (301), and the interior of the filter box (301) is also filled with ceramsite (302).

5. The lightning arrester assembly with moisture-proof structure according to claim 1, characterized in that: The second filtering mechanism (8) is composed of a filter frame (801), a waterproof and breathable layer (802), an activated carbon layer (803), and a heat-insulating layer (804), wherein the filter frame (801) is embedded in the top of the base (7), and the inside of the filter frame (801) is filled with the waterproof and breathable layer (802), the activated carbon layer (803), and the heat-insulating layer (804) in sequence from top to bottom.

6. The lightning arrester assembly with moisture-proof structure according to claim 1, characterized in that: The base (7) is provided with a connecting ring plate (701) on the annular outer wall below the second filtering mechanism (8), and a plurality of studs (702) are provided on the top of the connecting ring plate (701), and the inner walls of the studs (702) are screwed to bolts (703), and the base (7) is threadedly connected to the screw ring plate (6) provided at the bottom end of the protective shell (2) through the provided studs (702) and bolts (703).

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