CN202797915U

CN202797915U - Two-pole self-recovery voltage deviation protector

Info

Publication number: CN202797915U
Application number: CN 201220418061
Authority: CN
Inventors: 刘立; 王志平
Original assignee: 薛小平
Priority date: 2012-08-12
Filing date: 2012-08-22
Publication date: 2013-03-13
Anticipated expiration: 2022-08-22
Also published as: CN102820644A

Abstract

The utility model discloses a circuit protection device, and especially discloses a two-pole self-recovery voltage deviation protector. The protector comprises a power source (1), a comparison controller (3), a driving controller (5) and an implementing relay J. According to the protector, voltages of a circuit are detected and sampled in a real-time manner, for instance, if overvoltage, under-voltage or other abnormal cases of the circuit occur, the power source for providing power to the circuit is cut off instantly to thoroughly cut a line between an electrical network and a user, thereby eliminating threats of the fault line to human safety. When the voltages become normal, power is recovered automatically, so that safety of power supply is substantially improved.

Description

The two poles of the earth Self-recovering type voltage deviation protector

Technical field

The utility model relates to a kind of circuit protection device, and particularly a kind of the two poles of the earth Self-recovering type voltage deviation protector belongs to the electric equipment field.

Background technology

In the user power utilization, usually the electric voltage exception phenomenon can occur at present, such as overvoltage or under-voltage, when this situation occurs, be easy to consumer electronics equipment is caused damage.

Summary of the invention

It is a kind of when uniline generation overvoltage, under voltage fault that the purpose of this utility model is to provide; can be automatically connection between phase line, the neutral line and the user of simultaneously disjunction uniline, the two poles of the earth Self-recovering type voltage deviation protector that thoroughly eliminates safe hidden trouble.

The purpose of this utility model is achieved in that and comprises power supply (1), comparison controller (3), driving governor (5) and carry out relay J.

Described comparison controller (3) is provided with at least 1 signal input part and two signal output parts, and described signal input part is connected with the phase line of controlled circuit.

Described comparison controller (3) can be voltage comparator, single-chip microcomputer, also can for by TTL circuit or CMOS integrated circuit, be preferably four voltage comparators.

Described driving governor (5) comprises at least 4 control switchs, and these 4 control switchs are divided into two groups, these two groups of control switchs are arranged at the two ends of the voltage circuit of carrying out relay J respectively, and so that the execution relay J forms reverse each other voltage circuit, (3) two signal output parts of described comparison controller are controlled respectively the unlatching of two control switchs in above-mentioned two groups of control switchs or are closed.

Above-mentioned control switch can be made of the crystal switch triode, also can be made of thyristor, also can be mixed by crystal switch triode and thyristor to consist of.

Described execution relay J is state freeze mode relay, is preferably self-retaining state freeze mode relay, is preferably magnetic freeze mode relay.

As improvement, the signal input part of above-mentioned comparison controller (3) preferably is provided with sampler (2), and described sampler comprises pressure regulation, rectification and three parts of filtering at least.

As improvement, the utility model preferably is provided with display (4).

The utility model is by detecting in real time sampling to voltage, unusual such as voltage generation overvoltage, under voltage etc., namely cut off at any time the power supply of power supply circuits, circuit between thorough disjunction electrical network and the user, eliminated the threat of faulty line to personal safety, after voltage is normal, be automatic recovery of power supply, the fail safe of power supply is promoted greatly.

Description of drawings

Fig. 1 is the structured flowchart of the utility model embodiment 1.

Fig. 2 is the circuit diagram of the utility model embodiment 1.

Fig. 3 is the circuit diagram of the utility model embodiment 2.

Fig. 4 is the circuit diagram of the utility model embodiment 3.

Fig. 5 is the circuit diagram of the utility model embodiment 4.

Fig. 6 is the circuit diagram of the utility model embodiment 5.

Fig. 7 is the circuit diagram of the utility model embodiment 6.

Shown in the figure: 1 is power supply, and 2 is sampler, and 3 is comparison controller, and 4 is display, and 5 is driving governor.

In the circuit diagram: C1～C6 is electric capacity, and D1～D10 is crystal diode, and J is relay, and JK1～JK2 is the control contact of relay, and IC1～IC5 is integrated chip, and R1～R27 is build-out resistor, and T1～T6 is transistor, and TR1～TR4 is thyristor.

Embodiment

Embodiment 1:With reference to Fig. 1～2, be structured flowchart and the circuit diagram of the utility model embodiment 1.Comprise power supply (1), comparison controller 3, sampler 2, driving governor 5, display 4 and carry out relay J, described comparison controller 3 is provided with 1 signal input part and two signal output parts, described signal input part is connected with the phase line of controlled circuit, with the voltage condition of extract real-time controlled circuit; Described comparison controller 3 is LM339 four voltage comparators, described driving governor 5 is provided with 4 control switchs, and these 4 control switchs are divided into two groups, these two groups of control switchs mix formation by a crystal switch triode and a thyristor, one group thyristor TR1 wherein and crystal switch triode T1 are arranged at the two ends of the voltage circuit of carrying out relay J, another group thyristor TR2 and crystal switch triode T2 then oppositely are arranged at the two ends of the voltage circuit of carrying out relay J, so that two groups of control switchs form reverse each other voltage circuit with respect to carrying out relay J, 3 two signal output parts of described comparison controller are controlled respectively the unlatching of two control switchs in above-mentioned two groups or are closed, namely signal output part connects wherein one group thyristor TR1 and the control end of crystal switch triode T1, and another signal output part then connects the thyristor TR2 of another group and the control end of crystal switch triode T2; Described execution relay J is magnetic freeze mode relay, and described sampler comprises pressure regulation, rectification and three parts of filtering, wherein carries out voltage-regulation by resistance R 3, and crystal diode D5 carries out rectification, and capacitor C3 carries out filtering.

The utility model course of work is as follows: protector is under initial condition, and the control contact JK1 and the JK2 that carry out relay J are in normally open.When protector starts; road signal output in the comparison controller 3 can be sent a pulse signal to one group of control switch in the driving governor 5; make the voltage circuit conducting of the execution relay J that this group control switch controls; control contact JK1 and the JK2 action of carrying out relay J are closed; controlled circuit is in running order, after this carries out relay J and then is in the hold during power off state.

When the voltage abnormal of controlled circuit and when reaching rated value, another road signal output in the comparison controller 3 can be sent a pulse signal to another group control switch in the driving governor 5, make the voltage circuit conducting of the execution relay J that this group control switch controls, control contact JK1 and the JK2 action of carrying out relay J disconnect, controlled circuit then is in non operating state and keeps, and carries out relay J and then is in again the hold during power off state.

When voltage recovers normal, to carry out the control contact JK1 of relay J and JK2 and then can again move closure, controlled circuit is in running order again, after this carries out relay J and then keeps the hold during power off state.

Embodiment 2:With reference to Fig. 3, be the circuit diagram of the embodiment of the invention 2, to compare with embodiment 1, the difference of present embodiment is: 4 control switchs of described driving governor 5 are thyristor, i.e. TR1～TR4.Circuit can not turn-off after corresponding one group of thyristor conducting owing to there is not differential circuit

Embodiment 3:With reference to Fig. 4, be the circuit diagram of the embodiment of the invention 3, to compare with embodiment 1, the difference of present embodiment is: 4 control switchs of described driving governor 5 are transistor, i.e. T1～T4.

Embodiment 4:With reference to Fig. 5, be the circuit diagram of the embodiment of the invention 4, to compare with embodiment 1, the difference of present embodiment is: described comparison controller 3 is the PIC12C671 integrated chip for single-chip microcomputer IC5.Single-chip microcomputer IC5 is available PIC12F675 integrated chip also.

Embodiment 5:With reference to Fig. 6, be the circuit diagram of the embodiment of the invention 5, to compare with embodiment 4, the difference of present embodiment is: 4 control switchs of described driving governor 5 are transistor, i.e. T1～T4.

Embodiment 3:With reference to Fig. 7, be the circuit diagram of the embodiment of the invention 6, to compare with embodiment 4, the difference of present embodiment is: 4 control switchs of described driving governor 5 are thyristor, i.e. TR1～TR4.

Claims

1. the two poles of the earth Self-recovering type voltage deviation protector is characterized in that: comprise power supply (1), comparison controller (3), driving governor (5) and carry out relay J; Described comparison controller (3) is provided with at least 1 signal input part and two signal output parts, and described signal input part is connected with the phase line of controlled circuit; Described driving governor (5) comprises at least 4 control switchs, and these 4 control switchs are divided into two groups, these two groups of control switchs are arranged at the two ends of the voltage circuit of carrying out relay J respectively, and so that the execution relay J forms reverse each other voltage circuit, (3) two signal output parts of described comparison controller are controlled respectively the unlatching of two control switchs in above-mentioned two groups of control switchs or are closed; Described execution relay J is state freeze mode relay.

2. the two poles of the earth according to claim 1 Self-recovering type voltage deviation protector, it is characterized in that: the signal input part of described comparison controller (3) is provided with sampler (2), and described sampler comprises pressure regulation, rectification and three parts of filtering at least.

3. the two poles of the earth according to claim 1 and 2 Self-recovering type voltage deviation protector is characterized in that: be provided with display (4).

4. the two poles of the earth according to claim 1 and 2 Self-recovering type voltage deviation protector, it is characterized in that: described execution relay J is self-retaining state freeze mode relay.

5. the two poles of the earth according to claim 3 Self-recovering type voltage deviation protector, it is characterized in that: described execution relay J is self-retaining state freeze mode relay.

6. the two poles of the earth according to claim 1 and 2 Self-recovering type voltage deviation protector, it is characterized in that: described execution relay J is magnetic freeze mode relay.

7. the two poles of the earth according to claim 3 Self-recovering type voltage deviation protector, it is characterized in that: described execution relay J is magnetic freeze mode relay.