CN2418606Y

CN2418606Y - Lightning arrester

Info

Publication number: CN2418606Y
Application number: CN 00224268
Authority: CN
Inventors: 黄建国
Original assignee: Individual
Current assignee: KETONG INTERNATIONAL ELECTRONIC CO Ltd SHENZHEN CITY
Priority date: 2000-02-26
Filing date: 2000-02-26
Publication date: 2001-02-07
Anticipated expiration: 2010-02-26

Abstract

The utility model relates to a lightning arrester, comprising a discharge gap, an inductive probe, a rectification circuit, an energy storing voltage regulator circuit, an electronic switch and a traction solenoid switch. The discharge gap is composed of a fixed discharge electrode and a movable discharge electrode which is fixed on the traction end of the traction solenoid switch. When discharged, the movable discharge electrode enlarges the gap distance in time under the pulling of the traction end in the traction solenoid switch, and the discharge current is cut off to cause the follow current of the discharge gap to be terminated.

Description

A kind of lightning arrester

The utility model relates to a kind of lightning arrester.

Along with the world today uses popularizing of accurate microelectronic device, lightning voltage or circuit overvoltage usually constitute very big threat to the safety of these microelectronic devices, the used discharging gap of lightning arrester in the market all is changeless, with regard to the problem that exists discharge voltage and discharge afterflow not to take into account, discharging gap just must corresponding reducing when requiring discharge voltage low, when thunderbolt occurs, discharging gap just can not reliably cut off afterflow, therefore powerful short circuit current will cause the electrical network tripping operation or burn out circuit, and when increasing discharging gap and can cut off the discharge afterflow, discharge voltage is corresponding again to be increased.

The purpose of this utility model provides a kind of discharge voltage the low lightning arrester that can solve the problem of discharging gap afterflow again with regard to being.

For the technology that reaches above purpose the utility model employing is: comprise discharging gap 1, inductive probe 2, rectification circuit 3, energy storage voltage stabilizing circuit 4, electronic switch 5 and traction electromagnetic switch 6; Described discharging gap 1 with in parallel by the series circuit formed of coil L2 of described electronic switch 5 and traction electromagnetic switch 6 after be connected between usefulness electric line L, the N, inductive probe 2 is installed near the connection lead of discharging gap 1, its induced current inputs to rectification circuit 3, and the output signal of this rectification circuit 3 inputs to the control input end of electronic switch 5 behind energy storage voltage stabilizing circuit 4.

Described discharging gap 1 by one fixedly the removable sparking electrode 8 that is fixed on the traction end 9 of traction electromagnetic switch 6 of sparking electrode 7 and constitute.

Because discharging gap of the present utility model has a controlled removable sparking electrode, therefore can do discharging gap enough little, removable sparking electrode in time enlarges clearance distance during discharge under the pulling of traction electromagnetic switch, discharging current is disconnected, thereby solve the problem of discharging gap afterflow.

Below by drawings and Examples the utility model is further described:

Fig. 1 is the utility model theory diagram;

Fig. 2 is an embodiment of the present utility model;

Fig. 3 is the discharging gap structural representation.

As shown in the figure, comprise discharging gap 1, inductive probe 2, rectification circuit 3, energy storage voltage stabilizing circuit 4, electronic switch 5 and traction electromagnetic switch 6; Described discharging gap 1 is connected with between electric line L, the N, be connected after the series circuit parallel connection formed of coil L2 by electronic switch 5 and traction electromagnetic switch 6 between usefulness electric line L, the N, inductive probe 2 is installed near the connection lead of discharging gap 1, its induced current inputs to rectification circuit 3, and the output signal of this rectification circuit 3 inputs to the control input end of electronic switch 5 behind energy storage voltage stabilizing circuit 4.Described discharging gap 1, by one fixedly the removable sparking electrode 8 that is fixed on the traction end 9 of traction electromagnetic switch 6 of sparking electrode 7 and constitute.

Described discharging gap 1 is atmospherical discharges gap or gas discharge gap, inductive probe 2 is made of induction coil L1, rectification circuit 3 is made up of bridge heap B1, the two ends of induction coil L1 link to each other with two inputs of rectifier bridge heap B1 respectively, two outputs of rectifier bridge heap B1 link to each other with energy storage voltage stabilizing circuit 4, this energy storage voltage stabilizing circuit 4 is made up of the capacitor C1 and the voltage stabilizing didoe Z1 of parallel connection, and its output inputs to electronic switch 5 through current-limiting resistance R1; Described electronic switch 5 comprises a photoelectrical coupler Z2, bidirectional triode thyristor Z3 and resistor R 2, the input of photoelectrical coupler Z2 links to each other with energy storage voltage stabilizing circuit 4, output links to each other with an end of resistor R 2 and the gate pole of bidirectional triode thyristor Z3 respectively, and this bidirectional triode thyristor Z3 is connected after connect between usefulness electric line L, the N with the coil L 2 of traction electromagnetic switch 6.

When discharging gap 1 discharge, the electric current that the branch road at its place produces is after induction coil L1 induction, producing a signal by rectification circuit 3 and energy storage voltage stabilizing circuit 4 starts electronic switch 5, bidirectional triode thyristor Z3 conducting, the coil of traction electromagnetic switch 6 gets, in time enlarge clearance distance under the traction end pulling of the removable sparking electrode of discharging gap 1 in the traction electromagnetic switch, discharging current is disconnected, thereby the discharging gap afterflow is stopped.

Claims

1, a kind of lightning arrester is characterized in that: comprise discharging gap (1), inductive probe (2), rectification circuit (3), energy storage voltage stabilizing circuit (4), electronic switch (5) and traction electromagnetic switch (6); Described discharging gap (1) with in parallel by the series circuit formed of coil L2 of described electronic switch (5) and traction electromagnetic switch (6) after be connected between usefulness electric line L, the N, inductive probe (2) is installed near the connection lead of discharging gap (1), its induced current inputs to rectification circuit (3), and the output signal of this rectification circuit (3) inputs to the control input end of electronic switch (5) behind energy storage voltage stabilizing circuit (4).

2, a kind of lightning arrester as claimed in claim 1, it is characterized in that described discharging gap (1) by one fixedly sparking electrode (7) constitute with removable sparking electrode (8) on the traction end (9) that is fixed on traction electromagnetic switch (6).

3, as a kind of lightning arrester of claim 1 or 2, it is characterized in that described inductive probe (2) is made of induction coil L1, described rectification circuit (3) is made up of bridge heap B1, the two ends of induction coil L1 link to each other with two inputs of rectifier bridge heap B1 respectively, two outputs of rectifier bridge heap B1 link to each other with described energy storage voltage stabilizing circuit (4), this energy storage voltage stabilizing circuit (4) is made up of the capacitor C1 and the voltage stabilizing didoe Z1 of parallel connection, and its output inputs to electronic switch (5) through current-limiting resistance R1; Described electronic switch (5) comprises a photoelectrical coupler Z2, bidirectional triode thyristor Z3 and resistor R 2, the input of photoelectrical coupler Z2 links to each other with energy storage voltage stabilizing circuit (4), output links to each other with an end of resistor R 2 and the gate pole of bidirectional triode thyristor Z3 respectively, this bidirectional triode thyristor Z3 be connected after described traction electromagnetic switch (6) is connected with between electric line L, the N.