Combined lightning arrester with gap

Abstract

The utility model discloses a combined gapped lightning arrester which comprises a lightning arrester main body, a drainage wire, a drainage wire clamp, an upper electrode, a lower electrode, a discharge rod, a trigger and a plurality of resistor discs, the drainage wire is connected with the lightning arrester main body and the drainage wire clamp, and the upper electrode and the lower electrode are respectively arranged inside the lightning arrester main body. The lightning arrester further comprises a porcelain insulator and a plurality of corrugated sheets, a first screw is arranged on the porcelain insulator, the porcelain insulator is detachably arranged on the lightning arrester body, the drainage wire is connected with the drainage wire clamp and the porcelain insulator, and the discharge rod and the trigger are arranged on the porcelain insulator at intervals. And the plurality of resistor discs and the plurality of corrugated sheets are arranged in the lightning arrester main body at intervals and between the upper electrode and the lower electrode. According to the utility model, the lightning arrester main body and the porcelain insulator are of an integrated structure, the lightning arrester has a line lightning protection function, the porcelain insulator cannot be broken down during discharging and can protect the lightning arrester main body, and the corrugated sheets are arranged between the resistor sheets, so that the electrical performance can be improved.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, and in particular to a combined surge arrester with gap. Background Technology

[0002] A surge arrester is an electrical device that can release the energy of lightning or, concurrently, overvoltage during power system operation, protecting electrical equipment from transient overvoltage hazards. It also interrupts follow current to prevent system grounding short circuits. Surge arresters effectively protect electrical equipment; they activate when abnormal voltage occurs, providing protection, and quickly return to their original state once the voltage returns to normal, ensuring normal power supply. Surge arresters are frequently used outdoors, and existing ones are prone to breakdown and grounding after aging, presenting shortcomings. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned technical problems by providing a combined surge arrester with gaps.

[0004] The technical solution of this utility model is as follows: A combined gapped surge arrester includes a surge arrester body, a drain wire, a drain wire clamp, an upper electrode, a lower electrode, a discharge rod, a trigger, and several resistors. The drain wire connects the surge arrester body and the drain wire clamp. The upper electrode and the lower electrode are respectively disposed inside the surge arrester body. The arrester also includes a porcelain insulator and several corrugated sheets. The porcelain insulator is provided with a first screw. The porcelain insulator is detachably disposed on the surge arrester body. The drain wire connects the drain wire clamp and the porcelain insulator. The discharge rod and the trigger are spaced apart on the porcelain insulator. Several resistors and several corrugated sheets are spaced apart and disposed inside the surge arrester body between the upper electrode and the lower electrode.

[0005] Preferably, the corrugated sheet is a brazed aluminum alloy corrugated sheet.

[0006] Preferably, the bottom surface of the porcelain insulator is larger than the top surface of the surge arrester body.

[0007] Preferably, the drain clamp includes a clamp outer frame, a pressure block, a second screw, a spring, and a wiring screw. The pressure block is rotatably disposed at one end of the second screw. The pressure block has a protrusion that is slidably connected to the clamp outer frame. The second screw and the wiring screw are both screwed to the clamp outer frame. The spring is sleeved on the second screw.

[0008] Preferably, it also includes a Z-shaped bracket with two through holes.

[0009] The beneficial effects of this utility model are: In this utility model, the surge arrester body and the porcelain insulator are an integrated structure, which has the function of line lightning protection. The porcelain insulator cannot be broken down by discharge and can also protect the function of the surge arrester body. In addition, the corrugated sheet between the resistors can improve the electrical performance. Attached Figure Description

[0010] Fig. 1 This is a front view of the overall structure of a preferred embodiment of the present invention;

[0011] Fig. 2 This is a cross-sectional view of the connection between the surge arrester body and the porcelain insulator in a preferred embodiment of this utility model;

[0012] Fig. 3 This is a schematic diagram of the drain wire clamp in a preferred embodiment of the present invention;

[0013] Fig. 4 This is a top view of the bracket in a preferred embodiment of the present invention.

[0014] Figure reference numerals: surge arrester body 10, drain wire 2, drain wire clamp 3, clamp outer frame 31, pressure block 32, second screw 33, spring 34, wiring screw 35, upper electrode 4, lower electrode 5, discharge rod 6, trigger 7, resistor 8, porcelain insulator 9, first screw 901, corrugated sheet 11, bracket 12. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figs. 1 to 4A combined gapped surge arrester includes a surge arrester body 10, a drain wire 2, a drain wire clamp 3, an upper electrode 4, a lower electrode 5, a discharge rod 6, a trigger 7, and several resistor plates 8. The drain wire 2 connects the surge arrester body 10 and the drain wire clamp 3. The upper electrode 4 and the lower electrode 5 are respectively disposed inside the surge arrester body 10. The surge arrester also includes a porcelain insulator 9 and several corrugated plates 11. The porcelain insulator 9 is provided with a first screw 901. The porcelain insulator 9 is detachably disposed on the surge arrester body 10. The drain wire 2 connects the drain wire clamp 3 and the porcelain insulator 9. The discharge rod 6 and the trigger 7 are spaced apart on the porcelain insulator 9. Several resistor plates 8 and several corrugated plates 11 are spaced apart inside the surge arrester body 10 and between the upper electrode 4 and the lower electrode 5. In this invention, a discharge rod 6 and a trigger 7 are provided on the porcelain insulator 9, forming a discharge gap between them. The porcelain insulator 9 is connected to the surge arrester body 10 at its bottom via a first screw 901. The discharge rod 6 and the trigger 7 are connected in series with the surge arrester body 10. If the discharge gap is short-circuited, the surge arrester body 10 is in a high-resistance state and will not be grounded. If the surge arrester body 10 is damaged and short-circuited, the discharge gap isolates the voltage, ensuring the normal operation of the line. The discharge gap and the surge arrester body 10 provide a double guarantee for the normal operation of the line. This surge arrester has a line lightning protection function. The porcelain insulator 9 cannot be broken down by discharge and can also protect the surge arrester body 10. Furthermore, the corrugated sheet 11 between the resistor pieces 8 can improve the electrical performance. Specifically, one end of the first screw 901 is in contact with the upper electrode 4; threaded holes are provided at the upper and lower ends of the surge arrester body 10 and the top of the insulator 9; one end of the drain wire 2 is connected to the threaded hole at the top of the porcelain insulator 9; one end of the first screw 901 is connected to the threaded hole at the upper end of the surge arrester body 10; the threaded hole at the lower end of the surge arrester body 10 is connected to the fitting, and the fitting is in contact with the lower electrode 5.

[0017] As a preferred embodiment of this utility model, it may also have the following additional technical features:

[0018] In this embodiment, the corrugated sheet 11 is a brazed aluminum alloy corrugated sheet, which has good electrical conductivity.

[0019] In this embodiment, the bottom surface of the porcelain insulator 9 is larger than the top surface of the surge arrester body 10 to prevent rainwater from flowing into the threaded hole at the upper end of the surge arrester body 10.

[0020] In this embodiment, the drain wire clamp 3 includes a clamp outer frame 31, a pressure block 32, a second screw 33, a spring 34, and a wiring screw 35. The pressure block 32 is rotatably disposed at one end of the second screw 33. The pressure block 32 has a protrusion, which is slidably connected to the clamp outer frame 31. The second screw 33 and the wiring screw 35 are both screwed to the clamp outer frame 31. The spring 34 is sleeved on the second screw 33. One end of the wiring screw 35 passes through one end of the drain wire 2 and connects to the clamp outer frame 31 to fix one end of the drain wire 2 to the clamp outer frame 31. By rotating the second screw 33, the pressure block 32 is driven to move upward, fixing the wire between the clamp outer frame 31 and the pressure block 32. Specifically, the pressure block 32 is provided with a slot; the side wall of the wire clamp frame 31 is provided with a sliding groove that matches the protrusion, and the bottom of the second screw 33 can also be hooked by the insulated operating rod to drive it to rotate, so that it can be operated on the ground; the spring 34 can ensure that the force is evenly distributed at both ends and prevent the high voltage line from loosening.

[0021] In this embodiment, a Z-shaped bracket 12 is also included. The bracket 12 has two through holes. One end of the bracket 12 is connected to the hardware at the bottom of the surge arrester body 10, and the other end of the bracket 12 is connected to the hardware at the bottom of the external insulator.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined gap surge arrester, comprising an arrester body (10), a drain wire (2), a drain wire clamp (3), an upper electrode (4), a lower electrode (5), a discharge rod (6), a trigger (7), and a plurality of resistors (8), wherein the drain wire (2) connects the arrester body (10) and the drain wire clamp (3), and the upper electrode (4) and the lower electrode (5) are respectively disposed inside the arrester body (10), characterized in that: It also includes a porcelain insulator (9) and several corrugated sheets (11). The porcelain insulator (9) is provided with a first screw (901). The porcelain insulator (9) is detachably mounted on the arrester body (10). The drain wire (2) connects the drain wire clamp (3) and the porcelain insulator (9). The discharge rod (6) and the trigger (7) are spaced apart on the porcelain insulator (9). Several resistors (8) and several corrugated sheets (11) are spaced apart inside the arrester body (10) and between the upper electrode (4) and the lower electrode (5).

2. A combined surge arrester with gap according to claim 1, characterized in that: The corrugated sheet (11) is a brazed aluminum alloy corrugated sheet.

3. A combined surge arrester with gap according to claim 1, characterized in that: The bottom surface of the porcelain insulator (9) is larger than the top surface of the surge arrester body (10).

4. A combined surge arrester with gap according to claim 1, characterized in that: The drain clamp (3) includes a clamp outer frame (31), a pressure block (32), a second screw (33), a spring (34), and a wiring screw (35). The pressure block (32) is rotatably disposed at one end of the second screw (33). The pressure block (32) has a protrusion, which is slidably connected to the clamp outer frame (31). The second screw (33) and the wiring screw (35) are both screwed to the clamp outer frame (31). The spring (34) is sleeved on the second screw (33).

5. A combined surge arrester with gap according to claim 1, characterized in that: It also includes a Z-shaped bracket (12) with two through holes.

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