An ultra-high voltage porcelain jacket arrester

Abstract

The present invention belongs to the technical field of lightning arresters, and discloses an ultra-high voltage porcelain jacket lightning arrester, comprising a core column assembly, on which a protection assembly is sleeved, and two ends of the core column assembly distributed along the length direction are respectively connected with a support assembly and a sealing assembly, and the core column assembly comprises a plurality of resistor sheets, an aluminum gasket is connected between two adjacent resistor sheets, and a connection cavity is opened on the circumference of the plurality of resistor sheets; the use status inside the lightning arrester is identified by the mutual cooperation between the set identification assembly and the identification block, and the use status of the sealing gasket is judged by the sealing assembly to ensure that the sealing gasket can ensure that the sealing cavity is always in a sealed state, and at the same time, the state of the identification block is detected by the identification assembly to realize the identification and judgment of the use status of the porcelain sleeve, to ensure that the lightning arrester is always in a normal use state, and to improve the safety of the lightning arrester when in use.

Description

Technical Field

[0001] The invention belongs to the technical field of lightning arresters, in particular to an ultra-high voltage porcelain jacketed lightning arrester. Background Art

[0002] 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 the follow-on amplitude. Lightning arresters are usually connected between the power grid conductor and the ground wire, and sometimes connected beside the electrical winding or between the conductors. Lightning arresters mainly use nonlinear resistor valve plates made of zinc oxide as the main material, mixed with a small amount of other metal oxide additives and baked at high temperature, and have good nonlinear varistor characteristics.

[0003] The patent with application number CN202222482263.3 discloses an ultra-high voltage porcelain jacket arrester, comprising a first arrester body and a second arrester body, wherein the first arrester body and the second arrester body are vertically distributed, the first arrester body is arranged above the second arrester body, the first arrester body and the second arrester body are connected in series, and the rotation of the plug rod will drive the two plug blocks to be respectively movably connected in the card slot, at which time the two plug blocks will be misaligned with the two limit blocks, and the elastic reset effect of the spring will be used to reset the baffle and the limit block, at which time the limit block will limit the plug block to prevent the plug block from being separated from the card slot, so that the plug rod is connected and fixed to the connecting ring, at which time the bottom end of the plug rod will be inserted into the connecting piece, and the lightning protection elements on the first arrester body and the second arrester body are connected in series, and the ultra-high voltage porcelain jacket arrester has the advantages of convenient installation and connection, and is more convenient to operate, but the above scheme cannot identify the use status of the arrester during use, and also cannot enhance the use effect of the arrester.

[0004] When the arrester is in use, the internal state of the arrester cannot be identified, resulting in the risk of explosion of the arrester during use. At the same time, when the arrester is subjected to a strong electric shock, it will cause the arrester to exceed its carrying capacity, causing serious damage to the use of the arrester and being detrimental to the normal use of the arrester.

[0005] Therefore, an ultra-high voltage porcelain jacket arrester is proposed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems. The present invention provides an ultra-high voltage porcelain jacket arrester, which has the advantages of strong sealing and equal distribution of high current.

[0007] To achieve the above object, the present invention provides the following technical solutions: an ultra-high voltage porcelain jacket arrester, comprising a core column assembly, a protective assembly is sleeved on the core column assembly, and a support assembly and a sealing assembly are respectively connected to the two ends of the core column assembly distributed along the length direction;

[0008] The core column assembly includes a plurality of resistor sheets, an aluminum gasket is connected between two adjacent resistor sheets, and a connection cavity is opened on the circumference of the plurality of resistor sheets, a wire column is rotatably arranged in the connection cavity, and an identification block is connected to one end of the wire column away from the resistor sheet;

[0009] The sealing component includes an insulating layer, a sealing gasket is connected to the insulating layer, an active cavity is opened in the sealing gasket, a detection component is movably arranged in the active cavity, and a plurality of compression columns are arranged in a circular array on the detection component, and one end of the compression column away from the detection component is connected to the sealing gasket.

[0010] Preferably, the protection component includes a porcelain sleeve, one end of which is connected to a connection seat along the length direction, and the porcelain sleeve and the sealing component cooperate with each other to form a sealed cavity, and the core column component is located in the sealed cavity of the porcelain sleeve.

[0011] Preferably, the support assembly comprises a bearing seat, one end of the bearing seat is connected to the stem assembly, and one end of the bearing seat away from the stem assembly is connected to an abutment seat.

[0012] Preferably, penetrating columns are provided on the peripheral side of the resistor sheet, and the penetrating columns all penetrate the aluminum gasket, and two ends of the penetrating columns distributed along the length direction are respectively connected to the bearing seat and the insulating layer.

[0013] Preferably, the detection assembly comprises a connecting shell, a plurality of elastic members are connected to the connecting shell, and one side of the elastic members is connected to the compression column.

[0014] Preferably, the detection component further comprises a movable cavity, and an identification component is connected to the movable cavity.

[0015] Preferably, the identification component comprises an alarm device, a movable rod is connected to the circumference of the alarm device, and one end of the movable rod away from the alarm device is connected to the elastic member.

[0016] Preferably, the current direction of the resistor is opposite to the current direction of the conductor post.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the cooperation between the identification components and the identification blocks, the use status of the inside of the arrester is identified, and the use status of the sealing gasket is judged by the sealing component to ensure that the sealing gasket can ensure that the sealing cavity is always in a sealed state. At the same time, the state of the identification block is detected by the identification component to realize the identification and judgment of the use status of the porcelain sleeve, ensuring that the arrester is always in a normal use state and improving the safety of the arrester during use.

[0019] 2. Through the cooperation between the wire column and the identification block, when a strong current passes through the resistor, the wire column can be used to disperse the current on the resistor, thereby weakening the current pressure on the resistor. At the same time, in the process of the wire column dispersing the current on the resistor, it can avoid the temperature of a single area in the sealed cavity from being too high, thereby increasing the service life of the lightning arrester.

[0020] 3. The alarm device can be used to identify the pressure difference across the two ends of the resistor, and then judge the working state of the identification block to ensure the stability of the internal working state of the arrester. At the same time, the identification block can be in a normal working state, the sealing cavity is in a dry state, and the alarm device can be used to detect the use status of the sealing gasket to improve the recognition of the use status of the arrester. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the core column assembly of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the overall device of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure of the conductor post of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure of the detection component of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the detection component of the present invention.

[0028] Description of the drawings: 1. Protection component; 101. Porcelain sleeve; 102. Connecting seat; 2. Support component; 201. Bearing seat; 202. Resistance seat; 3. Core column component; 301. Resistor; 302. Aluminum gasket; 303. Connecting cavity; 304. Wire column; 305. Identification block; 4. Sealing component; 401. Insulating layer; 402. Sealing gasket; 4021. Movable cavity; 4022. Compression column; 5. Through column; 6. Detection component; 601. Connecting shell; 602. Elastic member; 603. Movable cavity; 7. Identification component; 701. Alarm; 702. Movable rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 2 As shown, an ultra-high voltage porcelain sheathed lightning arrester includes a core column assembly 3 for eliminating lightning, a protection assembly 1 is sleeved on the core column assembly 3 to ensure that the protection assembly 1 protects the core column assembly 3 during use, and a support assembly 2 and a sealing assembly 4 are respectively connected at both ends of the core column assembly 3 along the length direction. The safety of the lightning arrester during use is ensured by the support assembly 2, and the mutual cooperation between the sealing assembly 4 and the protection assembly 1 is utilized to make the core column assembly 3 in a sealed environment.

[0031] The core column assembly 3 includes a plurality of resistors 301, which are connected in series with each other. An aluminum gasket 302 is connected between two adjacent resistors 301. The arc generated on the resistor 301 is eliminated by the aluminum gasket 302 to ensure the safety of the resistor 301 when in use. A connecting cavity 303 is opened on the circumference of the plurality of resistors 301. A wire column 304 is rotatably arranged in the connecting cavity 303, wherein the wire column 304 can conduct the current passing through the resistor 301, thereby reducing the amount of current on the resistor 301. An end of the wire column 304 away from the resistor 301 is connected with an identification block 305 for detecting the humidity inside the sealed cavity, wherein the identification block 305 is preferably made of a water-absorbing and swelling material and has a certain conductivity, including but not limited to a conductive sponge PU foam product.

[0032] When the arrester is in a normal state, only a relatively weak current can pass through the resistor 301, which will not affect the overall use of the arrester. At this time, the wire post 304 is located in the connecting cavity 303 and will not rotate relative to the connecting cavity 303. When the arrester is struck by lightning or an abnormally large current passes through it, the current passing through the resistor 301 increases, and the current on the resistor 301 will be conducted to the identification block 305 through the wire post 304, thereby forming a terminal discharge and reducing the current on the resistor 301.

[0033] It should be noted that the length of the wire post 304 is smaller than the distance between the resistor 301 and the porcelain sleeve 101 , and under the influence of the inert gas in the sealed cavity, the arc on the wire post 304 will not affect the porcelain sleeve 101 .

[0034] like Figure 5-Figure 6 As shown, the sealing component 4 includes an insulating layer 401, and a sealing gasket 402 is connected to the insulating layer 401. The sealing gasket 402 is in contact with the inner wall of the porcelain sleeve 101 to ensure the sealing of the sealing cavity. That is, when the sealing component 4 is used, the initial diameter of the sealing gasket 402 is larger than the caliber of the porcelain sleeve 101, which causes the sealing gasket 402 to be compressed during the installation process due to the influence of the porcelain sleeve 101, thereby ensuring the sealing of the internal space of the porcelain sleeve 101. An active cavity 4021 is opened in the sealing gasket 402, and a detection device is provided in the active cavity 4021. Component 6, wherein the detection component 6 is made of insulating material, so that when the lightning arrester is subjected to current shock, the current will not cause damage to the inside of the detection component 6, and there are multiple compression columns 4022 in a circular array on the detection component 6, and the end of the compression column 4022 away from the detection component 6 is connected to the sealing gasket 402, and then when the sealing gasket 402 is compressed, the compression column 4022 will be compressed as the sealing gasket 402 is deformed, and the compressed force will be transmitted to the detection component 6, thereby ensuring that the detection component 6 can identify the compression state of the sealing gasket 402.

[0035] like Figure 1 As shown, further, the protection component 1 includes a porcelain sleeve 101, and a connecting seat 102 is connected to one end of the porcelain sleeve 101 distributed along the length direction. The connecting seat 102 seals and supports the core column component 3 to improve the safety of the device. The porcelain sleeve 101 and the sealing component 4 cooperate with each other to form a sealed cavity. The core column component 3 is located in the sealed cavity of the porcelain sleeve 101, and in order to ensure that the core column component 3 will not have current breakdown when in use, an inert gas, including but not limited to helium, is injected into the sealed cavity. When current passes through the core column component 3, the arc of the core column component 3 is suppressed by the inert gas, thereby reducing damage to the porcelain sleeve 101.

[0036] like Figure 2As shown, further, the support assembly 2 includes a bearing seat 201, one end of the bearing seat 201 is connected to the core column assembly 3, and the end of the bearing seat 201 away from the core column assembly 3 is connected to a resistance seat 202, and the resistance seat 202 is utilized to improve the stability of the core column assembly 3 during use, wherein the resistance seat 202 is made of insulating material, and is used to reduce the pressure difference between the two ends of the arrester, thereby ensuring the safe use of the arrester.

[0037] Furthermore, a through column 5 is provided on the circumferential side of the resistor 301, and the through column 5 penetrates the aluminum gasket 302. The two ends of the through column 5 distributed along the length direction are respectively connected to the supporting seat 201 and the insulating layer 401. The central axis of the through column 5 and the central axis of the resistor 301 are in a state of being parallel to each other, and the through column 5 is used to increase the diameter of the resistor 301. When the current passing through the resistor 301 is higher than the transmission range of the resistor 301, the through column 5 is used to share the current on the resistor 301, thereby improving the safety of the use of the resistor 301.

[0038] Furthermore, the detection component 6 includes a connecting shell 601, on which a plurality of elastic members 602 are connected, and the elastic members 602 are used to detect the sealing performance of the sealing gasket 402. One side of the elastic member 602 is connected to the compression column 4022. By connecting the elastic member 602 to the compression column 4022, the compression amount of the compression column 4022 can be identified and judged by the elastic member 602, thereby ensuring that the sealing state of the sealing gasket 402 is stable.

[0039] like Figure 7 As shown, further, the detection component 6 also includes a movable cavity 603, and an identification component 7 is connected in the movable cavity 603. The identification component 7 includes an alarm 701, wherein the alarm 701 is protected by the detection component 6, and thus when the current passes through, the alarm 701 will not be damaged. A movable rod 702 is connected on the circumference of the alarm 701, and the movable rod 702 can move in the movable cavity 603. The compression state of the compression column 4022 is identified and judged by the movable rod 702, so that when the state of the compression column 4022 is abnormal, the state of the elastic member 602 will be adjusted, and finally the state of the movable rod 702 is affected. The end of the movable rod 702 away from the alarm 701 is connected to the elastic member 602, and finally the alarm 701 is used to warn the staff, thereby improving the safety of the use of the lightning arrester.

[0040] The alarm device 701 can identify the pressure difference value across the two ends of the resistor 301, and then judge the working state of the identification block 305 to ensure the stability of the internal working state of the arrester. That is, when the pressure difference value identified by the alarm device 701 is consistent with the pressure difference value under normal conditions, it means that the identification block 305 is in a normal working state and the sealed cavity is in a dry state. When the pressure difference value identified by the alarm device 701 is significantly different from the pressure difference value under normal conditions, when the resistor 301 has not failed, it means that the identification block 305 absorbs water and its conductivity increases, which increases the current passing through the identification block 305 and weakens the extinguishing of the arc by the inert gas. In severe cases, the arc may damage the porcelain sleeve 101.

[0041] Furthermore, the current direction of the resistor 301 is opposite to the current direction on the wire post 304. When a strong current passes through the resistor 301, the current directions on the resistor 301 and the wire post 304 are opposite, so that the wire posts 304 are separated from each other under the action of electromagnetic force, and the wire post 304 and the identification block 305 are extended into the sealed cavity, causing the sealed cavity to extinguish the arc on the wire post 304 and the identification block 305.

[0042] When the device is used, the protection component 1 is firstly mounted on the core column component 3, and the porcelain sleeve 101 is sealed by the sealing component 4, and an inert gas is filled into the sealing cavity, and the arrester is installed in the use area.

[0043] During the use of the lightning arrester, a weak current will pass through the resistor 301, but the current intensity will not cause deflection between the conductor post 304 and the connecting cavity 303, and will not cause damage to the lightning arrester.

[0044] When the lightning arrester is struck by lightning, a strong current will be transmitted to the ground through the sealing component 4, the core column component 3 and the support component 2. When the current passes through the resistor 301, the aluminum gasket 302 is used to eliminate the arc that may appear on the resistor 301 to prevent the arc on the resistor 301 from damaging the porcelain sleeve 101. When the current passes through the resistor 301, part of the current will be introduced into the wire column 304, and the deflection between the wire column 304 and the connecting cavity 303 will be caused, so that the wire column 304 and the identification block 305 will penetrate into the sealed cavity to form a terminal discharge. On the one hand, the wire column 304 is used to share the current on the resistor 301 to reduce the working pressure of the resistor 301. On the other hand, the wire column 304 is used to disperse the current, and the inert gas in the sealed cavity is used to extinguish the arc to avoid excessive temperature concentration, which affects the normal use of the lightning arrester and its service life.

[0045] Meanwhile, during the use of the arrester, the working state of the identification block 305 is identified by the alarm 701 to ensure that the environment in the sealed cavity is always dry, and the performance of the arrester is stable without abnormal conditions during use.

[0046] With the long-term use of the lightning arrester, the sealing gasket 402 will be weathered or damaged, thereby affecting the sealing of the sealing cavity, that is, when the sealing gasket 402 is in normal working condition, the compression column 4022, the elastic member 602 and the movable rod 702 are all in a normal compression state, and the compression state and the force applied to them are the same. When the sealing gasket 402 is abnormal, the resistance between the sealing gasket 402 and the porcelain sleeve 101 will change, causing the elasticity of the compression column 4022 to change, and finally causing the elasticity of the movable rod 702 to change, which means that the sealing cavity is not tightly sealed at this time, affecting the normal use of the lightning arrester, and then using the alarm 701 to remind the staff to avoid the explosion of the lightning arrester.

[0047] When the alarm 701 recognizes that the current passing through the two ends of the core column component 3 has changed significantly, it means that the identification block 305 has absorbed water and expanded, and moisture has appeared inside the sealed cavity. If the detection component 6 does not recognize that the sealing gasket 402 has changed significantly, it means that a gap has appeared on the porcelain sleeve 101. The staff is required to replace the porcelain sleeve 101 to ensure the normal use of the lightning arrester.

[0048] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-high voltage porcelain-coated lightning arrester, comprising a core column assembly (3), characterized in that: The core column assembly (3) is sleeved with a protection assembly (1), and the two ends of the core column assembly (3) along the length direction are respectively connected with a support assembly (2) and a sealing assembly (4); The core column assembly (3) comprises a plurality of resistor sheets (301), an aluminum gasket (302) is connected between two adjacent resistor sheets (301), and a connection cavity (303) is provided on the circumference of each of the plurality of resistor sheets (301), a wire column (304) is rotatably provided in the connection cavity (303), and an identification block (305) is connected to one end of the wire column (304) away from the resistor sheet (301), and the identification block (305) is a water-absorbing and swelling material; The sealing component (4) comprises an insulating layer (401), a sealing gasket (402) is connected to the insulating layer (401), a movable cavity (4021) is provided in the sealing gasket (402), a detection component (6) is movably provided in the movable cavity (4021), and a plurality of compression columns (4022) are arranged in a circumferential array on the detection component (6), and one end of the compression column (4022) away from the detection component (6) is connected to the sealing gasket (402); The detection component (6) comprises a connection shell (601), a plurality of elastic members (602) are connected to the connection shell (601), and one side of the elastic member (602) is connected to the compression column (4022); The detection component (6) further comprises a movable cavity (603), and an identification component (7) is connected and arranged in the movable cavity (603); The identification component (7) comprises an alarm (701), a movable rod (702) is connected to the circumference of the alarm (701), and one end of the movable rod (702) away from the alarm (701) is connected to the elastic member (602); the alarm (701) is used to identify the pressure difference value passing through the two ends of the resistor (301), and the movable rod (702) is used to identify and judge the compression state of the compression column (4022).

2. The ultra-high voltage porcelain-coated arrester according to claim 1 is characterized in that: The protection component (1) comprises a porcelain sleeve (101), one end of the porcelain sleeve (101) distributed along the length direction is connected to a connection seat (102), the porcelain sleeve (101) and the sealing component (4) cooperate with each other to form a sealed cavity, and the core column component (3) is located in the sealed cavity of the porcelain sleeve (101).

3. The ultra-high voltage porcelain-coated arrester according to claim 1 is characterized in that: The support assembly (2) comprises a bearing seat (201), one end of the bearing seat (201) is connected to the stem assembly (3), and one end of the bearing seat (201) away from the stem assembly (3) is connected to a resistance seat (202).

4. The ultra-high voltage porcelain-coated arrester according to claim 3 is characterized in that: A through column (5) is provided on the peripheral side of the resistor sheet (301), the through columns (5) all penetrate the aluminum gasket (302), and the two ends of the through columns (5) distributed along the length direction are respectively connected to the bearing seat (201) and the insulating layer (401).

5. The ultra-high voltage porcelain-coated arrester according to claim 1 is characterized in that: The direction of the current in the resistor (301) is opposite to the direction of the current on the conductor post (304).

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