Gas insulated spark gap overvoltage suppressor

Abstract

The utility model discloses a gas insulation spark gap overvoltage suppressor relates to voltage suppressor technical field, including suppressor, the one end of suppressor is fixedly connected with the inner station line, and the other end of suppressor is fixedly connected with the outer station line, and the inner station line and the outer station line are far apart and are connected with the high temperature -resistant non -conducting connecting sleeve through thread connection, and two connecting sleeves are far apart and are connected with the metal end through thread connection, in the utility model, through the cooperation between connecting chamber, arc extinguishing chamber and first arc splitting plate, arc extinguishing block, second arc splitting plate, have played the role of arc splitting, lengthening arc extinguishing to arc, have solved the problem that arc sustained existence of overvoltage generation is easy to break down equipment, have improved arc extinguishing efficiency and equipment's safety protection performance, through the cooperation between connecting sleeve, metal cover, rubber block, conducting block and inner station line, outer station line, metal end, have solved the problem that high temperature leads to the loosening of conducting part and the poor connection contact, have improved the stability of installation and the reliability of conduction.

Description

Technical Field

[0001] This utility model relates to the field of voltage suppressor technology, and in particular to a gas-insulated spark gap overvoltage suppressor. Background Technology

[0002] In the electrical connections of power systems and various industrial pipelines, overvoltage phenomena (such as lightning-induced overvoltage, switching overvoltage, etc.) are a significant hidden danger threatening the safe operation of equipment.

[0003] When overvoltage occurs in a circuit, excessively high voltage can easily break down the insulation layer of electrical equipment, causing electric arcs to form inside the equipment. If these arcs are not suppressed and extinguished in time, they will continue to release energy, which may not only burn out the conductive components inside the equipment, but also cause serious problems such as equipment casing cracking and sealing failure, and even cause larger-scale faults such as short circuits and power outages. With the increasing requirements for safety and stability of industrial equipment, there is a need for an overvoltage suppression device that can efficiently extinguish arcs, provide stable conductivity, and adapt to complex working conditions. However, existing devices often fail to completely extinguish arcs during the arc handling process, resulting in the continued existence of arcs generated by overvoltages, which can easily break down equipment and seriously affect the safe operation and service life of the equipment. Therefore, it is necessary to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gas-insulated spark gap overvoltage suppressor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gas-insulated spark gap overvoltage suppressor, comprising a suppressor, one end of which is fixedly connected to an inner station line, and the other end of which is fixedly connected to an outer station line. The distal ends of the inner station line and the outer station line are both connected to high-temperature resistant non-conductive connecting sleeves by threads, and the distal ends of the two connecting sleeves are both connected to metal ends by threads.

[0006] Preferably, the suppressor has a dual-cavity structure, which is divided into a connecting cavity and an arc-extinguishing cavity, and the dual-cavity structure of the suppressor is filled with inert gas.

[0007] Preferably, the lower ends of the connecting cavity and the arc-extinguishing cavity are connected, and a first arc-splitting plate is installed at the connection point between the connecting cavity and the arc-extinguishing cavity.

[0008] Preferably, the upper end of the arc-extinguishing cavity is provided with a plurality of equidistant connecting grooves, the connecting cavity is connected to the arc-extinguishing cavity through the connecting grooves, and a second arc-splitting plate is installed in the connecting groove.

[0009] Preferably, multiple equidistant arc-extinguishing blocks are installed in the opposite ends of the connecting cavity and the arc-extinguishing cavity.

[0010] Preferably, a metal sleeve is installed on the inner cavity surface of the connecting sleeve, a high-temperature resistant rubber block is installed inside the metal sleeve, a conductive block is installed inside the rubber block, and the rubber block divides the connecting sleeve into a fixed cavity and a conductive cavity.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the connecting cavity, the arc-extinguishing cavity, the first arc-splitting plate, the arc-extinguishing block, and the second arc-splitting plate plays the role of splitting the arc, lengthening the arc, and finally extinguishing it, solving the problem of the continuous existence of arcs caused by overvoltage that easily break down equipment, and improving the arc-extinguishing efficiency and the safety protection performance of the equipment; the cooperation between the connecting sleeve, the metal sleeve, the rubber block, the conductive block, and the inner station line, the outer station line, and the metal end plays the role of ensuring a stable conductive connection between the inner station line and the outer station line, solving the problem of loose conductive components and poor connection contact caused by high temperature, and improving the stability of installation and the reliability of conductivity; the cooperation between the dual inner cavity structure (connecting cavity and arc-extinguishing cavity) of the suppressor and the inert gas plays the role of assisting in arc extinguishing and blocking current conduction when there is no high voltage, solving the problem of misleading conduction and incomplete arc extinguishing under non-overvoltage conditions, and improving the accuracy of overvoltage suppression and the arc extinguishing effect. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the connecting cavity and arc-extinguishing cavity structure proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the connecting sleeve and metal end proposed in this utility model;

[0016] Figure 4 The present utility model proposes Figure 2 Enlarged schematic diagram of section A in the middle;

[0017] Figure 5 The present utility model proposes Figure 3 Enlarged schematic diagram of part B in the middle.

[0018] The numbers in the diagram are: 1. Suppressor; 2. Inner station line; 3. Outer station line; 4. Connecting sleeve; 5. Metal end; 6. Connecting cavity; 7. Arc extinguishing cavity; 8. First arc-splitting plate; 9. Arc extinguishing block; 10. Second arc-splitting plate; 11. Metal sleeve; 12. Rubber block; 13. Conductive block; 14. Fixing cavity; 15. Conductive cavity. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example: See Figure 1-5 The gas-insulated spark gap overvoltage suppressor of this utility model includes a suppressor 1, which facilitates the conductive connection between the inner station line 2 and the outer station line 3. One end of the suppressor 1 is fixedly connected to the inner station line 2, which facilitates the connection to the inner station of the pipeline. The other end of the suppressor 1 is fixedly connected to the outer station line 3, which facilitates the connection to the outer station of the pipeline. The distal ends of both the inner station line 2 and the outer station line 3 are threaded to high-temperature resistant non-conductive connecting sleeves 4, which facilitate the connection between the inner station line 2, the outer station line 3, and the metal end 5. The distal ends of both connecting sleeves 4 are threaded to metal end 5, which facilitates the connection between the inner station line 2 and the outer station 3 and the inner and outer stations of the pipeline. In this utility model, the suppressor 1 has a double-cavity structure. The dual-cavity structure is divided into a connecting cavity 6 and an arc-extinguishing cavity 7. The connecting cavity 6 facilitates the connection between the inner station line 2 and the outer station line 3. The arc-extinguishing cavity 7 facilitates the extinguishing of the arc generated when the inner station line 2 and the outer station line 3 are connected. The dual-cavity structure of the suppressor 1 is filled with inert gas. The lower ends of the connecting cavity 6 and the arc-extinguishing cavity 7 are connected, and a first arc-splitting plate 8 is installed at the connection between the connecting cavity 6 and the arc-extinguishing cavity 7. The first arc-splitting plate 8 facilitates the initial separation of the arc generated by the inner station line 2 and the outer station line 3 to reduce the arc voltage. The upper end of the arc-extinguishing cavity 7 is provided with multiple equidistant connecting slots. The connecting cavity 6 is connected to the arc-extinguishing cavity 7 through the connecting slots. A second arc-splitting plate 10 is installed in the connecting slots. The second arc-splitting plate 10 facilitates the final extinguishing of the arc that has not been completely extinguished after passing through the arc-extinguishing block 9.

[0021] In this invention, multiple equidistant arc-extinguishing blocks 9 are installed at opposite ends of the connecting cavity 6 and the arc-extinguishing cavity 7. The arc-extinguishing blocks 9 facilitate the elongation and extinguishing of the arc after it has been divided by the first arc-splitting plate 8. A metal sleeve 11 is installed on the inner surface of the connecting sleeve 4. The metal sleeve 11 facilitates connection to the outer side of the plastic sleeve of the inner station line 2 and the outer station line 3. A high-temperature resistant rubber block 12 is installed inside the metal sleeve 11. The rubber block 12 facilitates the prevention of the conductor block 13 installed on the axis of the rubber block 12 from loosening due to the high temperature of the conductor caused by overcurrent. The rubber block 12 has the conductor block 13 installed inside it, and the rubber block 12 divides the connecting sleeve 4 into a fixed cavity 14 and a conductive cavity 15.

[0022] Working Principle: The use of this invention can be divided into an installation and replacement process and a working principle process. Installation and Replacement Process: Since the suppressor 1 is filled with inert gas in its double-layered inner cavity at the factory, both the inner station line 2 and the outer station line 3 are sealed and fixed to the suppressor 1 as a single unit. When pipeline connection is required, the outer sides of the inner station line 2 and the outer station line 3 are rotated and connected to the connecting sleeve 4. The threads on the metal sleeve 11 located in the conductive cavity 15 inside the connecting sleeve 4 will scrape off the rubber on the outer sides of the inner station line 2 and the outer station line 3, allowing the connecting sleeve 4 to fully engage with them. The conductive block installed on the axis of the rubber block 12 inside the connecting sleeve 4... 13 Connect the metal ends of the inner station line 2 and the outer station line 3. Then, screw the metal end 5 and the corresponding connecting sleeve 4 into the threaded groove of the metal sleeve 11 in the fixed cavity 14, so that the bottom end of the metal end 5 is connected to the other end of the conductive block 13. Finally, connect the metal end 5 connected to the inner station line 2 and the outer station line 3 to the inner station and the outer station of the pipeline to be protected respectively, and the installation is completed (the inner station and the outer station of the pipeline are connected by a metal connecting shell with a high resistance and a sealing device). When replacing the suppressor 1 (including the inner station line 2 and the outer station line 3), you only need to install and remove the connecting sleeve 4 and the metal end 5 as described above to replace the suppressor 1.

[0023] Working principle: The inner station line 2 and outer station line 3 of suppressor 1 are connected to the inner and outer stations of the protected pipeline. When a high-voltage current such as lightning strikes occurs, the current cannot directly pass through the sealing device with high resistance between the inner and outer stations, which may cause the inner or outer station to break down and crack. However, because the suppressor 1 is filled with inert gas (when there is no high-voltage current in the line, the gas inside the suppressor 1 cannot be connected; when an overvoltage occurs in the line (such as lightning induced overvoltage, switching overvoltage, etc.), and the voltage amplitude exceeds the breakdown voltage of the spark gap, the gas in the gap will be broken down and ionized, forming a conductive channel. During this process, the energy generated by the overvoltage will pass through this channel). The channel quickly discharges to the ground, thus protecting electrical equipment from damage. If a momentary voltage is too high and the potential difference between the inner station line 2 and the outer station line 3 in the suppressor 1 is too large, an electric arc will be generated. The electric arc is divided by the first arc-splitting plate 8 installed at the lower end of the connecting cavity 6 and the arc-extinguishing cavity 7 to disperse the energy of the initially generated electric arc (and divide the electric arc into multiple small electric arcs). The dispersed electric arc is stretched by multiple arc-extinguishing blocks 9, causing its energy to gradually weaken until the electric arc can no longer maintain the energy generated by the electric arc. When the electric arc energy is large (the arc is not extinguished after passing through the arc-extinguishing block 9), the second arc-splitting plate 10 will perform the final arc splitting to reduce the damage to the metal of the inner station line 2 caused by the electric arc.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas insulated spark gap overvoltage suppressor comprising a suppressor (1), characterized in that: One end of the suppressor (1) is fixedly connected to an inner station line (2), and the other end of the suppressor (1) is fixedly connected to an outer station line (3). The far ends of the inner station line (2) and the outer station line (3) are both connected to a high-temperature resistant non-conductive connecting sleeve (4) by thread. The far ends of the two connecting sleeves (4) are both connected to a metal end (5) by thread.

2. The gas-insulated spark gap overvoltage suppressor according to claim 1, characterized in that: The suppressor (1) has a double inner cavity structure, which is divided into a connecting cavity (6) and an arc-extinguishing cavity (7), and the double inner cavity structure of the suppressor (1) is filled with inert gas.

3. The gas-insulated spark gap overvoltage suppressor according to claim 2, characterized in that: The lower ends of the connecting cavity (6) and the arc-extinguishing cavity (7) are connected, and a first arc-splitting plate (8) is installed at the connection between the connecting cavity (6) and the arc-extinguishing cavity (7).

4. The gas-insulated spark gap overvoltage suppressor according to claim 2, characterized in that: The upper end of the arc-extinguishing cavity (7) is provided with multiple equidistant connecting grooves. The connecting cavity (6) is connected to the arc-extinguishing cavity (7) through the connecting grooves. A second arc-splitting plate (10) is installed in the connecting groove.

5. The gas-insulated spark gap overvoltage suppressor according to claim 2, characterized in that: Multiple equidistant arc-extinguishing blocks (9) are installed in the opposite ends of the connecting cavity (6) and the arc-extinguishing cavity (7).

6. The gas-insulated spark gap overvoltage suppressor according to claim 1, characterized in that: The inner cavity of the connecting sleeve (4) is fitted with a metal sleeve (11), and the inner cavity of the metal sleeve (11) is fitted with a high-temperature resistant rubber block (12). The rubber block (12) is fitted with a conductive block (13), and the rubber block (12) divides the connecting sleeve (4) into a fixed cavity (14) and a conductive cavity (15).

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