CN201821080U

CN201821080U - Leakage protection plug bush of sound-light warning permanent-magnet switch lack of ground wire and the like

Info

Publication number: CN201821080U
Application number: CN2009203140268U
Authority: CN
Inventors: 钟汝祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-04
Filing date: 2009-11-04
Publication date: 2011-05-04
Anticipated expiration: 2019-11-04

Abstract

The utility model relates to a leakage protection plug bush of a sound-light warning permanent-magnet switch lack of a ground wire and the like. The leakage protection plug bush mainly comprises a digital logic controller (A), a lack-of-ground-wire sensing circuit (B1), a leakage sensing circuit (B2), a permanent-magnet switching circuit (C), a sound-light warning circuit (D), a ground wire circuit (E), a low-voltage power supply circuit (F), a main body shell, a split-type plug bush, an input lead, an output lead and the like. The leakage protection plug bush has a 'lack-of-ground-wire-and-the-like' sound-light warning protection function; the defect that a leakage protection plug and the like cannot protect 'lack-of-ground-wire-and-the-like' environments can be overcome; by using the permanent-magnet switching circuit which can be split-controlled, the defect that the existing leakage protection plug cannot be split-controlled can be overcome; and by using a wire tightening plug bush, the defect that the contact between the existing leakage protection plug and a socket is poor can be overcome. The power consumption is tiny, the manufacturing cost is slight higher than the manufacturing cost of the existing leakage protection plug and the volume is not larger than the volume of the existing leakage protection plug; and the leakage protection plug bush is particularly suitable for all kinds of electrical appliances such as water heaters which are apt to cause electric shock.

Description

Owe acousto-optic warning permanent-magnetic switching earth leakage protective sleeves such as earth connection

Technical field

The utility model relates to a kind of earth leakage protective sleeve that leakage protecting plug and socket thereof are melted into a whole, particularly a kind of acousto-optic warning permanent-magnetic switching earth leakage protective sleeves such as earth connection of owing.

Background technology

The existing leakage protecting plug in the whole world all is to adopt pulse amplifying circuit control; all can not have earth connection defencive function, earth wire charged protecting function, outer casing electrification defencive function, neutral line electrization protection function, the neutral line and the mutual misconnection defencive function of phase line; and single-phase misconnection two-phase defencive function (this paper is called for short: defencive function " owing earth connection etc. " defencive function), this is incomplete protected mode.

Because, there is electricity consumption in " owing earth connection etc. " environment, just there is very unsafe hidden danger, that is, and " power utilization environment hidden danger "; In fact the case that electricity consumption causes the person to get an electric shock and die in " owing earth connection etc. " environment is many; So, invent a kind of have " owing earth connection etc. " acousto-optic warning defencive function owe acousto-optic warning permanent-magnetic switching earth leakage protective sleeve such as earth connection, be that social demand is arranged very much, very big to Electrical Safety protection contribution.

Summary of the invention

Main purpose of the present utility model is to provide a kind of and adopts digital logical circuit to control, have outside the creepage protection function, more initiated " owing earth connection etc. " defencive function, that can eliminate fundamentally that the person gets an electric shock indirectly owes acousto-optic warning permanent-magnetic switching earth leakage protective sleeve such as earth connection;

Another purpose of the present utility model be to provide a kind of power consumption existing leakage protecting plug little, that cost is a little higher than, volume is not more than same specification, can promote the existing leakage protecting plug updating and upgrading of a product owe acousto-optic warning permanent-magnetic switching earth leakage protective sleeve such as earth connection.

The utility model mainly by digital logic controller A, is owed sensing circuit B1 such as earth connection, electric leakage sensing circuit B2, permanent-magnetic switching circuit C, acousto-optic warning circuit D, earthed circuit E, low-voltage power circuit F, and main body cover, compositions such as split sleeve, input, output lead are seen accompanying drawing 1.

Owe acousto-optic warning permanent-magnetic switching earth leakage protective sleeves such as earth connection; digital logic controller (A); owe earth connection sensing circuit (B1); electric leakage sensing circuit (B2), permanent-magnetic switching circuit (C), acousto-optic warning circuit (D); earthed circuit (E); low-voltage power circuit (F), and main body cover, split sleeve, output lead are formed.

1 of each several part composition, digital logic controller (A): by first front stage circuits (a1), second front stage circuits (a2), crystal drive circuit (a4) before the logic processing circuit (a3), open circuit protection, acousto-optic warning drive circuit (a5), the digital circuit (a6) that produces is formed.

2 of each several part composition is owed earth connection sensing circuit (B1): be made up of coupler W, sensing capacitance C3, capacitor C 4; 3 of each several part composition, electric leakage sensing circuit (B2): form by zero sequence current mutual inductor T, capacitor C 5.4 of each several part composition, permanent-magnetic switching circuit (C) is made up of the brilliant pipe of: lock SCR, capacitor C 6, rectifier diode D3, sustained diode 4, electromagnetic trip coil M, double-pole switch K1-K2.

5 of each several part composition, acousto-optic warning circuit (D): form by buzzer BZ, luminous tube LED, resistance R 1.

6 of each several part composition, earthed circuit (E):, connect lead and form by PE lambda line terminal, PE1 outlet terminal.

7 of each several part composition, low-voltage power circuit (F): by decompression capacitor C1, filter capacitor C2, rectifier diode D1, rectifier diode D2, voltage-stabiliser tube Dz forms.

1 of concrete connection: the end 12 that the end 11 of first front stage circuits (a1) in the digital logic controller (A) connects coupler W end 3, the first front stage circuits (a1) connects coupler W end 4; The end 2 of second front stage circuits (a2) connects the end 1 of zero sequence current mutual inductor T; The end 3 of crystal drive circuit (a4) connects the tie point of the thyristor SCR control utmost point and capacitor C 6 before the open circuit protection in the digital logic controller (A); The end 4 running fire light pipe LED negative poles of the acousto-optic warning drive circuit (a5) of digital logic controller (A) and the tie point of resistance R 1; The power supply V+ end a+ of digital logic controller (A) connects the V+ of power circuit, and the power supply V-end a-of digital logic controller (A) connects the V-of power circuit.

2 of concrete connection: capacitor C 3 one ends of owing in the earth connection sensing circuit (B1) connect power supply phase line L, capacitor C 3 other ends polyphone capacitor C 4 connects the end 1 of coupler W again, the end 2 of coupler W connects V-, the end 3 of coupler W connects the end 11 of digital logic controller (A) first front stage circuits (a1), the end 4 of coupler W connects the end 12 of digital logic micro controller (A), and capacitor C 3 is connected ground wire PE with the tie point of capacitor C 4.

3 of concrete connection: the end 1 of the zero sequence current mutual inductor T in the electric leakage sensing circuit (B2) connects the end 2 of first front stage circuits (a1), and the end 2 of the mutual device T of zero-sequence current connects and connects V-; Capacitor C 5 also connects the end 1 of zero sequence current mutual inductor T and holds 2; 4 of concrete connection: the brilliant pipe of the lock in the permanent-magnetic switching circuit (C) SCR is anodal to be connected the end 1 of electromagnetic trip coil M and connects sustained diode 4 positive poles, the brilliant pipe of lock SCR negative pole connects V-, the brilliant pipe of the lock SCR control utmost point connects the end 3 of digital logic micro controller (A), capacitor C 6 one ends connect the brilliant pipe of the lock SCR control utmost point, and capacitor C 6 other ends connect V-; The anodal power supply phase line that connects of rectifier diode D3 goes out to hold L1.

5 of concrete connection: the anodal power supply V+ that connects of the buzzer BZ in the acousto-optic warning circuit (D), buzzer BZ negative pole connects luminous tube LED positive pole, and luminous tube LED negative pole connects the end 4 of digital logic controller (A); Resistance R 1 one ends connect luminous tube LED positive pole, and resistance R 1 other end connects luminous tube LED negative pole.

6 of concrete connection: the ground wire PE lambda line terminal in the earthed circuit (E) connects the capacitor C 3 and capacitor C 4 tie points of owing in the earth connection sensing circuit (B1), ground wire PE1 outlet terminal, on the fixedly connected qualified ground wire of ground wire PE lambda line terminal, ground wire PE1 outlet terminal is fixedly connected on the metal shell or metal machine frame of controlled electric equipment when using for the first time.

7 of concrete connection: decompression capacitor C1 one end in the low-voltage power circuit (F) connects the anodal and rectifier diode D2 negative pole tie point of rectifier diode D1, the decompression capacitor C1 other end connects power supply phase line L, rectifier diode D1 negative pole connects filter capacitor C2 positive pole, filter capacitor C2 negative pole connects V-, the anodal V-that connects of voltage-stabiliser tube Dz, voltage-stabiliser tube Dz negative pole connects filter capacitor C2 positive pole.

Wherein:

One, digital logic controller A comprises: the first front stage circuits a1, and the second front stage circuits a2,

Crystal drive circuit a4 before the logic processing circuit a3, open circuit protection, acousto-optic warning drive circuit a5, the digital circuit a6 that produces sees accompanying drawing 2.

Two, owe sensing circuit B1 such as earth connection by, coupler W, sensing capacitance C3, capacitor C 4 are formed.

Three, electric leakage sensing circuit B2 by, zero sequence current mutual inductor T, capacitor C 5 are formed.

Four, permanent-magnetic switching circuit C is made up of the brilliant pipe of, lock SCR, capacitor C 6, rectifier diode D3, sustained diode 4, electromagnetic trip coil M, double-pole switch K1-K2.

Five, acousto-optic warning circuit D by, buzzer BZ, luminous tube LED, resistance R 1 formed.

Six, earthed circuit E by, PE lambda line terminal, PE1 outlet terminal, connect lead and form.

Seven, low-voltage power circuit F by, decompression capacitor C1, filter capacitor C2, rectifier diode D1, rectifier diode D2, voltage-stabiliser tube Dz forms.

Eight, main body cover comprises: go up shell, lower casing composition.

Nine, split sleeve E, ground wire fastening terminal terminal fastening by, the fastening terminal of phase line, the neutral line, output lead are formed.

The composition of relevant operation principle of the present utility model and each parallel circuit, be connected among the following embodiment and repeat.

Description of drawings

Fig. 1 is the utility model electricity theory diagram;

Fig. 2 is the inner structure block diagram of digital logic controller A of the present utility model;

Fig. 3 is the circuit theory diagrams of the utility model embodiment.

Embodiment

Embodiment:

Present embodiment is that a tool is owed acousto-optic warning permanent-magnetic switching earth leakage protective sleeves such as earth connection, and its circuit theory as shown in Figure 3.

The present embodiment structure is composed as follows: mainly by, digital logic controller A owes sensing circuit B1 such as earth connection, electric leakage sensing circuit B2, permanent-magnetic switching circuit C, acousto-optic warning circuit D, earthed circuit E, low-voltage power circuit F, and main body cover, compositions such as split sleeve, input, output lead.

The present embodiment circuit is formed, connects as follows:

(1). low-voltage power circuit F, by decompression capacitor C1, filter capacitor C2, diode D1, diode D2, voltage-stabiliser tube Dz forms; Wherein C1 one end connects phase line L end, and the decompression capacitor C1 other end connects the tie point of diode D1 positive pole and diode D2 negative pole; Diode D1 negative pole and filter capacitor C2 positive pole, voltage-stabiliser tube Dz negative pole are total to and are connected to become low-tension supply V+; Diode D2 is anodal to be total to and to be connected to become low-tension supply V-with filter capacitor C2 negative pole, voltage-stabiliser tube Dz positive pole; V+ connects the V+ end of digital logic controller A, and V-connects the V-of digital logic micro controller A; V-connects and connects neutral line N again.

(2). owe sensing circuit B1 such as earth connection: form by sensing coupler W, capacitor C 3, capacitor C 4; Wherein, capacitor C 3 one ends connect power supply phase line L, and capacitor C 3 other ends polyphone capacitor C 4 connects the end 1 of sensing coupler W again, and the end 2 of sensing coupler W connects V-; The end 3 of sensing coupler W connects the end 11 of digital logic controller A, and the end 4 of sensing coupler W connects digital logic controller A end 12; Capacitor C 3 is connected ground wire PE with the tie point of capacitor C 4.

(3). electric leakage sensing circuit B2: form by zero sequence current mutual inductor T, capacitor C 5; Wherein, zero sequence current mutual inductor T coil windings mesopore is run through by phase line L and neutral line N, zero sequence current mutual inductor T winding terminal 1 connects the end 2 of digital logic controller A, zero sequence current mutual inductor T winding terminal 2 connects V-, and capacitor C 5 one ends connect T zero sequence current mutual inductor winding terminal 1, capacitor C 5 other ends connect zero sequence current mutual inductor T winding terminal 2.

(4). permanent-magnetic switching C is made up of, thyristor SCR, capacitor C 6, rectifier diode D3, sustained diode 4, electromagnetic trip coil M, double-pole switch K1-K2; Wherein, the anodal end 1 that connects M of thyristor SCR, thyristor SCR negative pole connects V-, the thyristor SCR control utmost point connects the end 3 of digital logic controller A, capacitor C 6 one ends connect the thyristor SCR control utmost point, capacitor C 6 other ends connect V-, the end 1 of electromagnetic trip coil M connects thyristor SCR positive pole and sustained diode 4 negative poles and connects sustained diode 4 positive poles, the end 2 of electromagnetic trip coil M connects with rectifier diode D3 negative pole and is connected sustained diode 4 negative poles, and the anodal phase line that connects of rectifier diode D3 goes out to hold L1.

(5). acousto-optic warning circuit D by, buzzer BZ, luminous tube LED, resistance R 1 formed; Wherein, the anodal low-tension supply V+ that connects of buzzer BZ, buzzer BZ negative pole connects luminous tube LED positive pole, and luminous tube LED negative pole connects the end 4 of digital logic controller A; Resistance R 1 one ends connect luminous tube LED positive pole, and resistance R 1 other end connects luminous tube LED negative pole.

(6). earthed circuit E goes into terminals P E, ground wire by, ground wire and goes out terminals P E1, input lead, output lead and form; Wherein, ground wire is gone into the tie point of capacitor C 3 and capacitor C 4 among tie point that terminals P E and ground wire go out terminals P E1 and " owing earth connection etc. " sensing circuit B2 and is connected; When using for the first time, go into terminals P E and be fixedly connected on the qualified ground wire, go out on the metal shell or metal machine frame that terminals P E1 is fixedly connected on controlled electric equipment.

(7). the end a3 of crystal drive circuit (a4) connects the tie point of the thyristor SCR control utmost point and capacitor C 6 before the open circuit protection in the digital logic controller (A); The end a4 running fire light pipe LED negative pole of the acousto-optic warning drive circuit (a5) of digital logic controller (A) and the tie point of resistance R 1; The power supply V+ end a+ of digital logic controller (A) connects the V+ of power circuit, and the power supply V-end a-of digital logic controller (A) connects the V-of power circuit.

In the circuit diagram, resistance R 2, button switch S form leak test electricity circuit; Wherein, resistance R 2 one ends connect phase line and go out to hold L1, and the resistance R other end connects button switch S end 1, and button switch S end 2 connects neutral line line N and goes into end.

The present embodiment operation principle:

When energized, do not press before the double-pole switch K1-K2 as yet, " owing earth connection etc. " hidden danger takes place in ifs circuit, the end 1 of coupler W among the sensor circuit B1, end 2 just have potential difference, and this potential difference signal is to end 4 → luminous tube LED, the resistance R 1 → buzzer BZ → V+ of the → end 3 of coupler W, 11,12 ends → digital logic controller A of end 4 → digital logic controller A; Like this, buzzer BZ and luminous tube LED just send the acousto-optic warning signal;

If above-mentioned utmost point K switch 1-K2 is at closure state: at the same time, end 3 → thyristor SCR of digital logic controller A control utmost point → thyristor SCR control positive pole → solenoid M end 1 → solenoid M end 2 → rectifier diode D3 negative pole → rectifier diode D3 positive pole → source electricity phase line goes out to hold L1 → double-pole switch K1, K2 open circuit protection.

Claims

1. owe acousto-optic warning permanent-magnetic switching earth leakage protective sleeves such as earth connection, it is characterized in that by digital logic controller (A), owe earth connection sensing circuit (B1), electric leakage sensing circuit (B2), permanent-magnetic switching circuit (C), acousto-optic warning circuit (D), earthed circuit (E), low-voltage power circuit (F), and main body cover, split sleeve, output lead are formed;

1 of each several part composition, digital logic controller (A): by first front stage circuits (a1), second front stage circuits (a2), logic processing circuit (a3), crystal drive circuit (a4) before the open circuit protection, acousto-optic warning drive circuit (a5), the digital circuit (a6) that produces is formed;

2 of each several part composition is owed earth connection sensing circuit (B1): be made up of coupler W, sensing capacitance C3, capacitor C 4;

3 of each several part composition, electric leakage sensing circuit (B2): form by zero sequence current mutual inductor T, capacitor C 5;

4 of each several part composition, permanent-magnetic switching circuit (C) is made up of the brilliant pipe of: lock SCR, capacitor C 6, rectifier diode D3, sustained diode 4, electromagnetic trip coil M, double-pole switch K1-K2;

5 of each several part composition, acousto-optic warning circuit (D): form by buzzer BZ, luminous tube LED, resistance R 1;

6 of each several part composition, earthed circuit (E):, connect lead and form by PE lambda line terminal, PE1 outlet terminal;

7 of each several part composition, low-voltage power circuit (F): by decompression capacitor C1, filter capacitor C2, rectifier diode

D1, rectifier diode D2, voltage-stabiliser tube Dz forms;

1 of concrete connection: the end 12 that the end 11 of first front stage circuits (a1) in the digital logic controller (A) connects coupler W end 3, the first front stage circuits (a1) connects coupler W end 4; The end 2 of second front stage circuits (a2) connects the end 1 of zero sequence current mutual inductor T; The end 3 of crystal drive circuit (a4) connects the tie point of the thyristor SCR control utmost point and capacitor C 6 before the open circuit protection in the digital logic controller (A); The end 4 running fire light pipe LED negative poles of the acousto-optic warning drive circuit (a5) of digital logic controller (A) and the tie point of resistance R 1; The power supply V+ end a+ of digital logic controller (A) connects the V+ of power circuit, and the power supply V-end a-of digital logic controller (A) connects the V-of power circuit;

2 of concrete connection: capacitor C 3 one ends of owing in the earth connection sensing circuit (B1) connect power supply phase line L, capacitor C 3 other ends polyphone capacitor C 4 connects the end 1 of coupler W again, the end 2 of coupler W connects V-, the end 3 of coupler W connects the end 11 of digital logic controller (A) first front stage circuits (a1), the end 4 of coupler W connects the end 12 of digital logic micro controller (A), and capacitor C 3 is connected ground wire PE with the tie point of capacitor C 4;

3 of concrete connection: the end 1 of the zero sequence current mutual inductor T in the electric leakage sensing circuit (B2) connects the end 2 of first front stage circuits (a1), and the end 2 of the mutual device T of zero-sequence current connects and connects V-; Capacitor C 5 also connects the end 1 of zero sequence current mutual inductor T and holds 2; 4 of concrete connection: the brilliant pipe of the lock in the permanent-magnetic switching circuit (C) SCR is anodal to be connected the end 1 of electromagnetic trip coil M and connects sustained diode 4 positive poles, the brilliant pipe of lock SCR negative pole connects V-, the brilliant pipe of the lock SCR control utmost point connects the end 3 of digital logic micro controller (A), capacitor C 6 one ends connect the brilliant pipe of the lock SCR control utmost point, and capacitor C 6 other ends connect V-; The anodal power supply phase line that connects of rectifier diode D3 goes out to hold L1;

5 of concrete connection: the anodal power supply V+ that connects of the buzzer BZ in the acousto-optic warning circuit (D), buzzer BZ negative pole connects luminous tube LED positive pole, and luminous tube LED negative pole connects the end 4 of digital logic controller (A); Resistance R 1 one ends connect luminous tube LED positive pole, and resistance R 1 other end connects luminous tube LED negative pole;

6 of concrete connection: the ground wire PE lambda line terminal in the earthed circuit (E) connects the capacitor C 3 and capacitor C 4 tie points of owing in the earth connection sensing circuit (B1), ground wire PE1 outlet terminal, on the fixedly connected qualified ground wire of ground wire PE lambda line terminal, ground wire PE1 outlet terminal is fixedly connected on the metal shell or metal machine frame of controlled electric equipment when using for the first time;