阅读说明：本技术 一种用于线路防雷的放电间隙装置 (A discharge gap device for circuit lightning protection ) 是由 庄海峰 陈凡 吴刚 程昌浩 凌志英 许俊 赵佳伟 李超 赵杨 赵欣宇 罗志峰 于 2020-08-12 设计创作，主要内容包括：本发明涉及一种用于线路防雷的放电间隙装置,包括放电间隙下电极板,固定支撑绝缘子,放电间隙上电极板,放电间隙上电极板上设置有工频限流器,放电间隙上电极板上设置有放电间隙上电极,放电间隙下电极板上设置放电间隙下电极,放电间隙上电极和放电间隙下电极之间形成第一放电间隙；放电间隙下电极板上还设置一组可拆卸的放电间隙辅助电极,放电间隙辅助电极和放电间隙上电极之间成型第二放电间隙。本发明能够有效解决现有的无工频续流放电间隙装置的放电间隙结构具有单一的放电间隙,当过电压产生的能量较大时,该间隙被击穿放电仍不能完全释放过电压的能量,多余的能量仍会危害配电线路的正常运行的问题。(The invention relates to a discharge gap device for line lightning protection, which comprises a discharge gap lower electrode plate, a fixed supporting insulator and a discharge gap upper electrode plate, wherein a power frequency current limiter is arranged on the discharge gap upper electrode plate, a discharge gap upper electrode is arranged on the discharge gap upper electrode plate, a discharge gap lower electrode is arranged on the discharge gap lower electrode plate, and a first discharge gap is formed between the discharge gap upper electrode and the discharge gap lower electrode; a group of detachable auxiliary discharge gap electrodes are further arranged on the lower discharge gap electrode plate, and a second discharge gap is formed between the auxiliary discharge gap electrodes and the upper discharge gap electrodes. The invention can effectively solve the problems that the discharge gap structure of the existing non-power-frequency follow current discharge gap device has a single discharge gap, when the energy generated by overvoltage is larger, the gap is broken down to discharge and still cannot completely release the energy of the overvoltage, and the redundant energy still can harm the normal operation of a distribution line.)

1. A discharge gap device for line lightning protection, its characterized in that: the device comprises a discharge gap lower electrode plate and a fixed support insulator arranged on the discharge gap lower electrode plate, wherein a discharge gap upper electrode plate is arranged at the top end of the fixed support insulator, a power frequency current limiter is arranged on the discharge gap upper electrode plate, a discharge gap upper electrode is arranged on the discharge gap upper electrode plate, a discharge gap lower electrode matched with the discharge gap upper electrode is arranged on the discharge gap lower electrode plate, and a first discharge gap is formed between the discharge gap upper electrode and the discharge gap lower electrode; a group of detachable auxiliary discharge gap electrodes are further arranged on the lower discharge gap electrode plate, and a second discharge gap is formed between the auxiliary discharge gap electrodes and the upper discharge gap electrodes.

2. The discharge gap device for lightning protection of a line according to claim 1, characterized in that: the upper electrode plate of the discharge gap comprises an upper electrode main plate and an upper electrode bending plate which are integrally formed, and the upper electrode bending plate is bent downwards from the tail end of the upper electrode main plate; the upper electrode of the discharge gap is arranged on the back of the upper electrode bending plate, the tail end of the lower electrode plate of the discharge gap is provided with an inverted hook part which is bent upwards, and the inverted hook part is bent and formed from the tail end of the lower electrode plate of the discharge gap to the upper electrode of the discharge gap; the discharge gap lower electrode is formed on the top of the barb part.

3. A discharge gap device for lightning protection of lines according to claim 2, characterized in that: a group of auxiliary electrode columns are arranged on the lower electrode plate of the discharge gap, and the auxiliary electrode of the discharge gap is arranged at the tops of the auxiliary electrode columns.

4. A discharge gap device for lightning protection of lines according to claim 3, characterized in that: the auxiliary electrode column is provided with two between barb portion and fixed support insulator, is first auxiliary electrode column, second auxiliary electrode column respectively, and discharge gap auxiliary electrode on the first auxiliary electrode column is located the discharge gap under the electrode, and discharge gap auxiliary electrode on the second auxiliary electrode column is located the left side of first auxiliary electrode column, and the barb portion is located the right side of first auxiliary electrode column.

5. The discharge gap device for lightning protection of lines according to claim 4, characterized in that: the discharge gap auxiliary electrode and the discharge gap upper electrode are arc-shaped protrusions.

6. The discharge gap device for lightning protection of lines according to claim 5, characterized in that: the top of the barb part opposite to the electrode on the discharge gap is of an arc structure.

7. The discharge gap device for lightning protection of lines according to claim 4, characterized in that: the first auxiliary electrode column and the second auxiliary electrode column are detachably and vertically arranged on the lower electrode plate of the discharge gap.

8. The discharge gap device for lightning protection of a line according to claim 7, characterized in that: the tops of the first auxiliary electrode column, the second auxiliary electrode column and the barb part are positioned on the same horizontal plane.

Technical Field

The invention relates to a discharge gap device for line lightning protection.

Background

The overvoltage generated by lightning strike on distribution lines (such as 35KV high-voltage distribution network and 110KV high-voltage distribution network) can cause insulator flashover or breakdown and wire breakage. The lightning wave may even invade the transformer substation along the distribution line, which affects the safe operation of the transformer substation and even causes personal safety accidents.

At present, in order to reduce the influence of overvoltage on a distribution line, a discharge gap device is generally provided on the distribution line. However, the current no-power frequency freewheeling discharge gap device has the following disadvantages: the discharge gap structure of the non-power-frequency follow current discharge gap device has a single discharge gap. When the energy generated by the overvoltage is large, the gap is broken down and discharged, the energy of the overvoltage cannot be completely released, and the redundant energy still jeopardizes the normal operation of the distribution line.

Disclosure of Invention

The invention aims to provide a discharge gap device for line lightning protection, which can effectively solve the problems that the discharge gap structure of the existing non-power-frequency follow current discharge gap device has a single discharge gap, when the energy generated by overvoltage is larger, the gap is broken down to discharge and still cannot completely release the energy of the overvoltage, and the redundant energy still can harm the normal operation of a distribution line, and meanwhile, because the design structure is not reasonable enough, birds can reside, and the risk of short circuit is caused by the birds.

The technical scheme adopted by the invention for solving the technical problems is as follows: a discharge gap device for line lightning protection comprises a discharge gap lower electrode plate and a fixed support insulator arranged on the discharge gap lower electrode plate, wherein a discharge gap upper electrode plate is arranged at the top end of the fixed support insulator, a power frequency current limiter is arranged on the discharge gap upper electrode plate, a discharge gap upper electrode is arranged on the discharge gap upper electrode plate, a discharge gap lower electrode matched with the discharge gap upper electrode is arranged on the discharge gap lower electrode plate, and a first discharge gap is formed between the discharge gap upper electrode and the discharge gap lower electrode; a group of detachable auxiliary discharge gap electrodes are further arranged on the lower discharge gap electrode plate, and a second discharge gap is formed between the auxiliary discharge gap electrodes and the upper discharge gap electrodes.

Furthermore, the upper electrode plate of the discharge gap comprises an upper electrode main plate and an upper electrode bending plate which are integrally formed, and the upper electrode bending plate is bent downwards from the tail end of the upper electrode main plate; the upper electrode of the discharge gap is arranged on the back of the upper electrode bending plate, the tail end of the lower electrode plate of the discharge gap is provided with an inverted hook part which is bent upwards, and the inverted hook part is bent and formed from the tail end of the lower electrode plate of the discharge gap to the upper electrode of the discharge gap; the discharge gap lower electrode is formed on the top of the barb part.

Furthermore, a group of auxiliary electrode columns are arranged on the lower electrode plate of the discharge gap, and the auxiliary electrode of the discharge gap is arranged at the top of the auxiliary electrode columns.

Furthermore, the auxiliary electrode column is provided with two between barb portion and fixed support insulator, is first auxiliary electrode column, second auxiliary electrode column respectively, and discharge gap auxiliary electrode on the first auxiliary electrode column is located the discharge gap under the electrode, and discharge gap auxiliary electrode on the second auxiliary electrode column is located the left side of first auxiliary electrode column, and the barb portion is located the right side of first auxiliary electrode column.

Furthermore, the discharge gap auxiliary electrode and the discharge gap upper electrode are arc-shaped protrusions.

Furthermore, the top of the barb part opposite to the electrode on the discharge gap is of an arc structure.

Furthermore, the first auxiliary electrode column and the second auxiliary electrode column are detachably and vertically arranged on the lower electrode plate of the discharge gap.

Furthermore, the tops of the first auxiliary electrode column, the second auxiliary electrode column and the barb part are positioned on the same horizontal plane.

The invention has the beneficial effects that: through the mutual cooperation between the lower electrode plate of the discharge gap, the upper electrode plate of the discharge gap, the power frequency current limiter and the auxiliary electrode of the discharge gap, the problem that the normal operation of a distribution line can still be damaged by redundant energy because the discharge gap structure of the conventional non-power-frequency follow current discharge gap device has a single discharge gap, and when the energy generated by overvoltage is large, the gap is punctured to discharge and still cannot completely release the energy of the overvoltage

The invention will be explained in more detail below with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, and lines shown in fig. 6 and 7 are both schematic gap lines, which are not real objects.

Detailed Description