阅读说明：本技术 一种10千伏避雷器接地电流自动切断装置及操作方法 (10 KV lightning arrester grounding current automatic cut-off device and operation method ) 是由 谢荣泽 宋仕达 张绪生 张丹瑶 赵艺 庞中原 张胜楠 王忠祥 张达 王世博 薛冰 于 2021-08-23 设计创作，主要内容包括：一种10千伏避雷器接地电流自动切断装置,包括两部分组成,分别是支撑组件和跌落组件；支撑组件具体包括上接线座,下接线座,上支座,下支座,陶瓷绝缘子,安装架；跌落组件包括上触头,下触头,操作环,熔丝管,避雷器。一种10千伏避雷器接地电流自动切断装置操作方法,作业人员将本装置的跌落组件安装在支撑组件上,确保上触头和上支座之间以及下触头和下支座之间可靠接触；作业人员使用绝缘杆,可通过本装置的操作环将避雷器已更换完毕的跌落组件重新安装在支撑组件上。本发明的优点：可采用绝缘拉闸杆停电拆除本装置的跌落组件并更换避雷器,方便快捷、安全可靠；提供一个明显的故障点便于巡视人员发现,有效提高故障巡视效率。(An automatic ground current cut-off device of a 10 KV lightning arrester comprises two parts, namely a supporting component and a dropping component; the supporting assembly specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester. An operating method of an automatic ground current cutting device of a 10 KV lightning arrester is characterized in that an operator installs a falling component of the device on a supporting component to ensure reliable contact between an upper contact and an upper support and between a lower contact and a lower support; the operating personnel uses the insulator spindle, and the operating ring of this device of accessible is installed the subassembly that falls that the arrester has been changed on the supporting component again. The invention has the advantages that: the falling assembly of the device can be disassembled and the lightning arrester can be replaced by adopting the insulating brake pull rod in case of power failure, so that the device is convenient, quick, safe and reliable; an obvious fault point is provided, so that inspection personnel can find the fault point conveniently, and the fault inspection efficiency is effectively improved.)

1. The utility model provides a 10 kilovolt arrester ground current automatic cutout device which characterized in that: the automatic ground current cutting device of the 10 kV lightning arrester comprises two parts, namely a supporting component (1) and a dropping component (2);

the supporting component (1) specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly (2) comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester;

support assembly (1): the device consists of an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack, and can be connected and fixed on a 10 kV tower to provide a physical supporting function for each component; drop assembly (2): the upper contact, the lower contact, the operating ring, the fuse tube and the lightning arrester can be installed on or separated from the supporting component to play a role in conducting or cutting off current.

2. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the upper wire holder (3) is a copper part and provides a connection point for a main line lead.

3. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the lower wiring seat (4) is a copper part and provides a connection point for the grounding wire.

4. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the upper support (5) is a copper part, is integrally connected with the upper wiring seat (3), and provides a connecting contact for the upper contact.

5. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the lower support (6) is a copper part, is integrally connected with the lower wiring seat (4), and provides a connecting contact for the lower contact.

6. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the ceramic insulator (7) is a ceramic part and is connected with the upper wire holder (3), the lower wire holder (4), the upper support (5), the lower support (6) and the mounting rack (8), and the ceramic insulator plays an insulating role among all the parts.

7. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the mounting rack (8) is made of cast iron material subjected to rust prevention treatment and is fixedly mounted on a 10 kV tower.

8. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the upper contact (9) is a copper material and is separated from the upper holder (5) by operating after the fuse is melted.

9. The automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that: the lower contact (10) is made of a copper material and is arranged on the lower support and rotates around the lower support; the operating ring (11) is made of a copper material and is integrally connected with the upper support to provide an operating point for the insulating pull rod; the fuse tube (12) is connected with the upper contact and the lightning arrester and can be independently detached, the outer part is an insulating tube, the inner part is a fuse wire, the fuse wire adopts a time-delay fusing type, the fuse wire can be fused after the current reaches a fusing threshold value and lasts for a period of time, and the upper contact can act after the fuse wire is fused; the lightning arrester (13) is connected with the lower contact and the fuse tube, can be independently disassembled, and adopts a common 10 KV zinc oxide lightning arrester on the market.

10. An operation method of the automatic ground current cutoff device for 10 kv lightning arrester according to claim 1, characterized in that:

the method comprises the following steps: the falling assembly of the device is arranged on the supporting assembly by an operator, so that reliable contact between the upper contact and the upper support and reliable contact between the lower contact and the lower support are ensured, the device is arranged at the corresponding position of a 10 kV tower instead of a traditional lightning arrester, and the upper wiring seat and the lower wiring seat of the device are respectively connected with a main line lead and a grounding wire;

step two: when the lightning arrester needs to be replaced, an operator uses the insulating rod, the falling assembly can be detached from the supporting assembly through the operating ring of the device, and then the lightning arrester on the falling assembly is replaced;

step three: the operating personnel uses the insulator spindle, and the drop subassembly that the operating ring of this device of accessible has changed the arrester and has accomplished installs again on supporting component, and the arrester normally drops into the operation this moment.

Technical Field

The invention relates to the technical field of 10 kV arresters, in particular to an automatic ground current cutting device for a 10 kV arrester and an operation method.

Background

The overvoltage is one of common operating states of a power distribution network, usually, an arrester is used as main equipment for protecting the power distribution network from being influenced by overvoltage impact, but after overvoltage is conducted for many times, the arrester cannot restore to the original state after action, and particularly when a line is subjected to lightning overvoltage, the arrester is easy to breakdown and burn due to high overvoltage amplitude, so that current still flows into the ground through the damaged arrester to generate ground fault after the voltage of the power distribution network is restored to be normal. Because puncture burning loss takes place inside the arrester, be difficult for patrolling personnel to discover. The replacement of the lightning arrester requires the whole power failure construction of the line or the replacement by adopting the second type live working, the influence range is large, and the replacement process is complex. Therefore, a device capable of automatically cutting off the grounding current after the voltage of the power grid is recovered to be normal when the lightning arrester is damaged is needed, and the device has the characteristics of easiness in finding a fault point and easiness in replacing the lightning arrester.

Disclosure of Invention

The invention aims to solve the problems and requirements and particularly provides a device for automatically cutting off the grounding current of a 10-kilovolt lightning arrester and an operation method.

The invention provides an automatic ground current cutting device of a 10 KV lightning arrester, which is characterized in that: the automatic ground current cutting device of the 10 kV lightning arrester comprises two parts, namely a supporting component 1 and a falling component 2;

the supporting component 1 specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly 2 comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester;

the supporting component 1: the device consists of an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack, and can be connected and fixed on a 10 kV tower to provide a physical supporting function for each component; the dropping assembly 2: the upper contact, the lower contact, the operating ring, the fuse tube and the lightning arrester can be installed on or separated from the supporting component to play a role in conducting or cutting off current.

The upper wire holder 3 is a copper member and provides a connection point for a main line lead.

The lower wiring seat 4 is a copper part and provides a connection point for a grounding wire.

The upper support 5 is a copper part and is integrally connected with the upper wire holder 3, and simultaneously provides a connecting contact for the upper contact.

The lower support 6 is a copper material part, is integrally connected with the lower wiring seat 4, and provides a connecting contact for the lower contact.

The ceramic insulator 7 is a ceramic part, is connected with the upper wire holder 3, the lower wire holder 4, the upper holder 5, the lower holder 6 and the mounting rack 8, and plays an insulating role among all the parts.

The mounting rack 8 is made of cast iron material subjected to rust prevention treatment and is fixedly mounted on a 10 kV tower.

The upper contact 9 is a copper material and operates after the fuse is melted, and is separated from the upper holder 5.

The lower contact 10 is made of a copper material and is arranged on the lower support and rotates around the lower support; the operating ring 11 is made of a copper material and is integrally connected with the upper support to provide an operating point for the insulating pull rod; the fuse tube 12 is connected with the upper contact and the lightning arrester and can be independently detached, the outer part is an insulating tube, the inner part is a fuse wire, the fuse wire adopts a time-delay fusing type, the fuse wire can be fused after the current reaches a fusing threshold value and lasts for a period of time, and the upper contact can act after the fuse wire is fused; the lightning arrester 13 is connected with the lower contact and the fuse tube, can be independently disassembled, and adopts a common 10 KV zinc oxide lightning arrester on the market.

An operation method of an automatic ground current cut-off device of a 10 KV lightning arrester is characterized in that:

the method comprises the following steps: the falling assembly of the device is arranged on the supporting assembly by an operator, so that reliable contact between the upper contact and the upper support and reliable contact between the lower contact and the lower support are ensured, the device is arranged at the corresponding position of a 10 kV tower instead of a traditional lightning arrester, and the upper wiring seat and the lower wiring seat of the device are respectively connected with a main line lead and a grounding wire;

step two: when the lightning arrester needs to be replaced, an operator uses the insulating rod, the falling assembly can be detached from the supporting assembly through the operating ring of the device, and then the lightning arrester on the falling assembly is replaced;

step three: the operating personnel uses the insulator spindle, and the drop subassembly that the operating ring of this device of accessible has changed the arrester and has accomplished installs again on supporting component, and the arrester normally drops into the operation this moment.

The invention has the advantages that:

when the lightning arrester is burnt due to overvoltage breakdown and cannot be recovered to be normal, continuous grounding current can be formed, so that a fuse of a dropping component of the device is fused, an upper contact is driven to act and is separated from an upper support to drop, the grounding current is automatically cut off, and a main circuit is recovered to be normal;

the fuse condition can be selected by adopting a time-delay fuse design, namely, the fuse can be recovered to be normal in a short time after the lightning arrester introduces current into the ground due to overvoltage action, the fuse is not fused at the moment, when the lightning arrester cannot be recovered to be normal, a main line is connected with the ground through the conducted lightning arrester to form continuous grounding current, and the fuse is fused at the moment; obvious fault points can be formed after falling, and inspection personnel can conveniently and quickly find the fault points; the falling assembly of the device can be disassembled and the lightning arrester can be replaced by adopting the insulating brake pull rod in case of power failure, so that the device is convenient, quick, safe and reliable; the wearing parts comprise a fuse tube and a lightning arrester, and can be disassembled and replaced, so that the maintenance is convenient. The lightning arrester can be replaced through the insulating pull rod, and the lightning arrester is convenient, quick, safe and reliable; the lightning arrester not only can play the due role of the traditional 10 KV lightning arrester, but also can automatically cut off the grounding current after overvoltage is discharged into the ground through the lightning arrester when the lightning arrester is broken down and cannot be recovered to be normal, so that the normal operation of a power grid is guaranteed; meanwhile, an obvious fault point is provided, so that inspection personnel can find the fault point conveniently, and the fault inspection efficiency is effectively improved.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a general schematic;

FIG. 2 is a schematic diagram of a specific structure;

FIG. 3 is a closing assembly view;

fig. 4 is an assembly view of the opening device.

Detailed Description

Example 1

The invention provides an automatic ground current cutting device of a 10 KV lightning arrester, which is characterized in that: the automatic ground current cutting device of the 10 kV lightning arrester comprises two parts, namely a supporting component 1 and a falling component 2;

the supporting component 1 specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly 2 comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester;

the supporting component 1: the device consists of an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack, and can be connected and fixed on a 10 kV tower to provide a physical supporting function for each component; the dropping assembly 2: the upper contact, the lower contact, the operating ring, the fuse tube and the lightning arrester can be installed on or separated from the supporting component to play a role in conducting or cutting off current.

The upper wire holder 3 is a copper member and provides a connection point for a main line lead.

The lower wiring seat 4 is a copper part and provides a connection point for a grounding wire.

The upper support 5 is a copper part and is integrally connected with the upper wire holder 3, and simultaneously provides a connecting contact for the upper contact.

The lower support 6 is a copper material part, is integrally connected with the lower wiring seat 4, and provides a connecting contact for the lower contact.

The ceramic insulator 7 is a ceramic part, is connected with the upper wire holder 3, the lower wire holder 4, the upper holder 5, the lower holder 6 and the mounting rack 8, and plays an insulating role among all the parts.

The mounting rack 8 is made of cast iron material subjected to rust prevention treatment and is fixedly mounted on a 10 kV tower.

The upper contact 9 is a copper material and operates after the fuse is melted, and is separated from the upper holder 5.

The lower contact 10 is made of a copper material and is arranged on the lower support and rotates around the lower support; the operating ring 11 is made of a copper material and is integrally connected with the upper support to provide an operating point for the insulating pull rod; the fuse tube 12 is connected with the upper contact and the lightning arrester and can be independently detached, the outer part is an insulating tube, the inner part is a fuse wire, the fuse wire adopts a time-delay fusing type, the fuse wire can be fused after the current reaches a fusing threshold value and lasts for a period of time, and the upper contact can act after the fuse wire is fused; the lightning arrester 13 is connected with the lower contact and the fuse tube, can be independently disassembled, and adopts a common 10 KV zinc oxide lightning arrester on the market.

An operation method of an automatic ground current cut-off device of a 10 KV lightning arrester is characterized in that:

the method comprises the following steps: the falling assembly of the device is arranged on the supporting assembly by an operator, so that reliable contact between the upper contact and the upper support and reliable contact between the lower contact and the lower support are ensured, the device is arranged at the corresponding position of a 10 kV tower instead of a traditional lightning arrester, and the upper wiring seat and the lower wiring seat of the device are respectively connected with a main line lead and a grounding wire;

step two: when the lightning arrester needs to be replaced, an operator uses the insulating rod, the falling assembly can be detached from the supporting assembly through the operating ring of the device, and then the lightning arrester on the falling assembly is replaced;

step three: the operating personnel uses the insulator spindle, and the drop subassembly that the operating ring of this device of accessible has changed the arrester and has accomplished installs again on supporting component, and the arrester normally drops into the operation this moment.

Example 2

The invention provides an automatic ground current cutting device of a 10 KV lightning arrester, which is characterized in that: the automatic ground current cutting device of the 10 kV lightning arrester comprises two parts, namely a supporting component 1 and a falling component 2;

the supporting component 1 specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly 2 comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester;

the supporting component 1: the device consists of an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack, and can be connected and fixed on a 10 kV tower to provide a physical supporting function for each component; the dropping assembly 2: the upper contact, the lower contact, the operating ring, the fuse tube and the lightning arrester can be installed on or separated from the supporting component to play a role in conducting or cutting off current.

The upper wire holder 3 is a copper member and provides a connection point for a main line lead.

The lower wiring seat 4 is a copper part and provides a connection point for a grounding wire.

The upper support 5 is a copper part and is integrally connected with the upper wire holder 3, and simultaneously provides a connecting contact for the upper contact.

The lower support 6 is a copper material part, is integrally connected with the lower wiring seat 4, and provides a connecting contact for the lower contact.

The ceramic insulator 7 is a ceramic part, is connected with the upper wire holder 3, the lower wire holder 4, the upper holder 5, the lower holder 6 and the mounting rack 8, and plays an insulating role among all the parts.

The mounting rack 8 is made of cast iron material subjected to rust prevention treatment and is fixedly mounted on a 10 kV tower.

An operation method of an automatic ground current cut-off device of a 10 KV lightning arrester is characterized in that:

the method comprises the following steps: the falling assembly of the device is arranged on the supporting assembly by an operator, so that reliable contact between the upper contact and the upper support and reliable contact between the lower contact and the lower support are ensured, the device is arranged at the corresponding position of a 10 kV tower instead of a traditional lightning arrester, and the upper wiring seat and the lower wiring seat of the device are respectively connected with a main line lead and a grounding wire;

step two: when the lightning arrester needs to be replaced, an operator uses the insulating rod, the falling assembly can be detached from the supporting assembly through the operating ring of the device, and then the lightning arrester on the falling assembly is replaced;

step three: the operating personnel uses the insulator spindle, and the drop subassembly that the operating ring of this device of accessible has changed the arrester and has accomplished installs again on supporting component, and the arrester normally drops into the operation this moment.

Example 3

The invention provides an automatic ground current cutting device of a 10 KV lightning arrester, which is characterized in that: the automatic ground current cutting device of the 10 kV lightning arrester comprises two parts, namely a supporting component 1 and a falling component 2;

the supporting component 1 specifically comprises an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack; the falling assembly 2 comprises an upper contact, a lower contact, an operating ring, a fuse tube and a lightning arrester;

the supporting component 1: the device consists of an upper wiring seat, a lower wiring seat, an upper support, a lower support, a ceramic insulator and a mounting rack, and can be connected and fixed on a 10 kV tower to provide a physical supporting function for each component; the dropping assembly 2: the upper contact, the lower contact, the operating ring, the fuse tube and the lightning arrester can be installed on or separated from the supporting component to play a role in conducting or cutting off current.

The upper wire holder 3 is a copper member and provides a connection point for a main line lead.

The lower wiring seat 4 is a copper part and provides a connection point for a grounding wire.

The mounting rack 8 is made of cast iron material subjected to rust prevention treatment and is fixedly mounted on a 10 kV tower.

The upper contact 9 is a copper material and operates after the fuse is melted, and is separated from the upper holder 5.

The lower contact 10 is made of a copper material and is arranged on the lower support and rotates around the lower support; the operating ring 11 is made of a copper material and is integrally connected with the upper support to provide an operating point for the insulating pull rod; the fuse tube 12 is connected with the upper contact and the lightning arrester and can be independently detached, the outer part is an insulating tube, the inner part is a fuse wire, the fuse wire adopts a time-delay fusing type, the fuse wire can be fused after the current reaches a fusing threshold value and lasts for a period of time, and the upper contact can act after the fuse wire is fused; the lightning arrester 13 is connected with the lower contact and the fuse tube, can be independently disassembled, and adopts a common 10 KV zinc oxide lightning arrester on the market.

An operation method of an automatic ground current cut-off device of a 10 KV lightning arrester is characterized in that:

the method comprises the following steps: the falling assembly of the device is arranged on the supporting assembly by an operator, so that reliable contact between the upper contact and the upper support and reliable contact between the lower contact and the lower support are ensured, the device is arranged at the corresponding position of a 10 kV tower instead of a traditional lightning arrester, and the upper wiring seat and the lower wiring seat of the device are respectively connected with a main line lead and a grounding wire;

step two: when the lightning arrester needs to be replaced, an operator uses the insulating rod, the falling assembly can be detached from the supporting assembly through the operating ring of the device, and then the lightning arrester on the falling assembly is replaced;

step three: the operating personnel uses the insulator spindle, and the drop subassembly that the operating ring of this device of accessible has changed the arrester and has accomplished installs again on supporting component, and the arrester normally drops into the operation this moment.