CN2148414Y

CN2148414Y - Single-phase multifunction safety energy-saving controller

Info

Publication number: CN2148414Y
Application number: CN 93233410
Authority: CN
Inventors: 刘振坤; 卓尚慧; 曾孝清; 张茂礼
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-08
Filing date: 1993-03-08
Publication date: 1993-12-01
Anticipated expiration: 2003-03-08

Abstract

The circuit of a single-phase multifunction safety energy-saving controller is composed of an electrical leakage and overvoltage detection circuit (1), an overcurrent detection circuit (2), an electrical leakage and overvoltage signal amplifying circuit (3), a common amplifying output circuit (4), a delayed drive circuit (5), a rectifier power supply (6) and a timing control circuit (7). The single-phase multifunction safety energy-saving controller which is integrally provided with a power supply switch concentrates various functions of controlling electrical leakage, overcurrent, overvoltage, excessive quantitative power utilization and phase-to-phase power supply (electric theft), can act as a switch, a controller and a protector simultaneously, and can effectively guarantee the load of power utilization, the safety of circuit and energy saving. The utility model has the advantages of one object with multifunction, compact structure, convenient connection and high cost performance, being applicable for all single-phase circuits.

Description

Single-phase multifunction safety energy-saving controller

The utility model relates to the emergency protective circuit device that is used for single phase poaer supply, also belongs to a kind of electronic switch, further is meant a kind of single-phase multifunctional safe energy-saving controller.

It is the tie of town and country huge numbers of families' community life and work that 220V exchanges single phase poaer supply, in case the circuit part electric leakage, overcurrent, overvoltage, the electricity consumption of overdetermination amount or one occur mutually during abnormality such as a ground power supply, all will produce harm in various degree to the safe and high quality operation of whole power supply network.In order fully effectively the various faults of single phase poaer supply to be carried out automatic safe protective, people have made the multiple product listing and have proposed multiple patent application, but their general problems that exists are, majority is to set up a device again on the basis of existing single phase poaer supply switch, rather than manufacture in one with mains switch, so structurally seem and disperse and tightly do not beat, also trouble comparatively of wiring is installed; In addition, promptly calculate to have and manufacture in one with mains switch, defencive function is incomplete yet, fails to have both simultaneously electric leakage, overcurrent, overvoltage, the electricity consumption of overdetermination amount and the multiple function of a ground power supply protection mutually.

The purpose of this utility model; be for overcoming the above-mentioned weak point of prior art, provide a kind of mains switch that contains in one and simultaneously with electric leakage, overcurrent, overvoltage, the electricity consumption of overdetermination amount and the single-phase multifunctional safe energy-saving controller that rolls into one of a ground power supply protection function mutually.

Referring to Fig. 1 the utility model electricity functional-block diagram, solution of the present utility model is as follows.Its circuit part has electric leakage and over-voltage detection circuit (1), its the input side and the input side of over-current detection circuit (2) are in series, the input of its output and electric leakage and overvoltage signal amplification circuit (3) joins, the output of the output of over-current detection circuit (2) and electric leakage and overvoltage signal amplification circuit (3) together is connected in the input of shared amplification output circuit (4), the output of the input of delay driving circuit (5) and shared amplification output circuit (4) joins, the output output timing controling signal of timing control circuit (7) is controlled the output end signal of over-current detection circuit (2), and the output of rectifier power source (6) is supplied with electric leakage and overvoltage signal amplification circuit (3), shared amplification output circuit (4) and delay driving circuit (5) are with dc supply.

The utility model with foregoing circuit structure is when concrete the use, it is installed in the housing, and be connected on the 220V single phase alternating current power supply after will being in series with the input side of electric loading (8) and over-current detection circuit (2) and electric leakage and over-voltage detection circuit (1), the input of rectifier power source (6) also is connected on the 220V single phase alternating current power supply, also the output control terminal of delay driving circuit (5) is serially connected in the input of usefulness electric loading (8) simultaneously.Like this, when circuit was in normal condition, the 220V power supply was given with electric loading (8) normal power supply through the input side of electric leakage and over-voltage detection circuit (1), the input side of over-current detection circuit (2), the output control terminal of delay driving circuit (5).When electric leakage, overvoltage or a phase one ground power supply (power stealing) phenomenon appear in circuit; electric leakage and over-voltage detection circuit (1) give electric leakage with detected signal and overvoltage signal amplification circuit (3) amplifies; signal after the amplification is defeated by delay driving circuit (5) after sending shared amplification output circuit (4) to amplify again; delay driving circuit (5) output control signal is given the input with electric loading (8); the 220V AC power that to supply with electric loading (8) disconnects, thus the protection safety of electric loading and power supply circuits.

When over current fault or the electricity consumption of overdetermination amount appear in the circuit of operate as normal; over-current detection circuit (2) is given shared amplification output circuit (4) with detected over-current signal and is amplified; amplify the signal of output and be defeated by delay driving circuit (5); disconnect with electric loading (8) and 220V AC power by the control of circuit (5) output signal, with the safety of protection with electric loading and power supply circuits.

Peak of power consumption and low power consumption for the power load of whole power supply grid forms naturally generally all carry out segmentation by the temporal cycle.For this reason and the timing control circuit (7) of design has at times the peak load shifting effect of control.Promptly in advance timing control circuit (7) was adjusted by the period, peak period in the course of the work, timing control circuit (7) output timing controling signal is given over-current detection circuit (2), make the signal of its output after shared amplification output circuit (4) amplifies, supply delay driving circuit (5), circuit (5) output control signal will disconnect with the 220V AC power of electric loading (8), limits it in the peak period electricity consumption; And in the low power consumption period, timing control circuit (7) output timing controling signal is given over-current detection circuit (2), the signal that makes circuit (2) be defeated by shared amplification output circuit (4) can not amplify, delay driving circuit (5) can not get the amplification output signal of circuit (4), therefore its control is connected with electric loading (8) and 220V AC power, carries out quantitative electricity consumption.

When causing with electric loading (8) and the disconnection of 220V AC power because of electric leakage, overcurrent, the electricity consumption of overdetermination amount, because the loop disconnects, fault-signal all loses, electric leakage and over-voltage detection circuit (1) or over-current detection circuit (2) are owing to detect less than signal, make the no amplifying signal of shared amplification output circuit (4) export, so delay driving circuit (5) is controlled with electric loading (8) energized electricity consumption (certainly again through one section time-delay, if fault do not disappear yet, deenergization once more then).Situation when causing that because of overvoltage usefulness electric loading (8) disconnects with the 220V AC power is then different, although the loop disconnects, but the overvoltage signal not necessarily disappears, then electric leakage and over-voltage detection circuit (1) still have detection signal output, make shared amplification output circuit (4) also still have amplifying signal output, so delay driving circuit (5) is controlled with electric loading (8) and power supply disconnection always.Only remain could use electric loading (8) energized after the voltage recovery normally, thus automatic track protection electric loading.

The utility model contains mains switch in one, integrates multiple function, can play the effect of mains switch, various control device and protector simultaneously, has guaranteed effectively with the safety of electric loading and circuit and energy-conservation.Its one-object-many-purposes, ratio of performance to price height; Structure is tightly beaten, and easy-to-connect is installed, and saves and installs and maintenance cost; Cheap, promote the use of easily.Can be widely used in all single phase circuits,, but also play a part overcurrent protection not only to not influence of single-phase motor starting.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model electricity functional-block diagram;

Fig. 2 is the schematic diagram of a kind of physical circuit of Fig. 1 block diagram.

Referring to Fig. 2, electric leakage and over-voltage detection circuit (1) are by zero sequence current mutual inductor LH, piezo-resistance Rv, resistance R ₁And often open button QA and form, Rv works when the external power grid overvoltage, and the QA that is attempted by on the Rv is the trial jump button, is used for the sensitivity of checking circuit tripping operation.Over-current detection circuit (2) is by current transformer H, diode D ₅To D ₉, voltage-stabiliser tube DW ₂With DW ₃, potentiometer RW ₂, resistance R ₁₁To R ₁₃, capacitor C ₃And timing switch clock SK ₁Normally opened contact SK _1-1Form.Electric leakage and overvoltage signal amplification circuit (3) are by triode BG ₁, potentiometer RW ₁, resistance R ₂To R ₅And capacitor C ₁Form.Shared amplification output circuit (4) is by triode BG ₂, resistance R ₆To R ₈And capacitor C ₄With C ₅Form.Delay driving circuit (5) is by time-base integrated circuit IC, relay J ₁, LED, diode D ₁₀, resistance R ₉With R ₁₀And capacitor C ₆Form J ₁Normally opened contact J _1-1Be connected on input with electric loading (8).Rectifier power source (6) is by transformer B, diode D ₁To D ₄, voltage-stabiliser tube DW ₁And capacitor C ₂Form.Timing control circuit (7) is by timing switch clock SK ₁And battery E forms.

When circuit sent electricity and operate as normal, 2 pin of IC were high level, wait C ₆Be full of a time of delay of electricity, 3 pin just are low level, J ₁Just electric and drive J _1-1Closure is used the work of electric loading energized, and this moment, LED did not work.When electric leakage, overvoltage or a phase one ground power supply (power stealing) phenomenon occurring, the LH output signal makes BG ₁Emitter potential raises, and BG ₂Collector potential descends, and 2 pin of IC are low level, C ₆Discharge, 3 pin are high level, make J ₁Line bag dead electricity, LED makes fault and shows J _1-1Disconnect, will be with the dump of electric loading.When overcurrent or the electricity consumption of overdetermination amount occurring, the detected signal of H is after rectification, again through RW ₂And R ₁₁Sampling is quantitative, again via DW ₂, DW ₃, R ₁₂With R ₁₃The detection bridge that constitutes is exported to BG ₂Between base stage and the emitter-base bandgap grading, BG ₂Collector potential descends, and also is at last to make J _1-1Disconnect, will be with the dump of electric loading.At low power consumption period, SK _1-1Disconnect, circuit is kept operate as normal; And the peak of power consumption period, SK _1-1Closure, the output that detects bridge makes BG ₂Collector potential descends, and makes J at last _1-1Disconnect, will be with the dump of electric loading.

When causing J because of electric leakage, overcurrent, the electricity consumption of overdetermination amount _1-1After the disconnection, LH or H no-output, BG ₂Collector electrode and 2 pin of IC return to high level again, through C ₆One section time-delay of charging, 3 pin of IC recover low level, J again _1-1Closed again power supply.And when causing J because of overvoltage _1-1After the disconnection, LH exports always, so 3 pin of IC are high level always, and J _1-1Also disconnect always, only remain the voltage recovery normally, J _1-1Just closed power supply.

Claims

1, a kind of single-phase multifunctional safe energy-saving controller, it is characterized in that, circuit part has electric leakage and over-voltage detection circuit (1), its the input side and the input side of over-current detection circuit (2) are in series, the input of its output and electric leakage and overvoltage signal amplification circuit (3) joins, the output of the output of over-current detection circuit (2) and electric leakage and overvoltage signal amplification circuit (3) together is connected in the input of shared amplification output circuit (4), the output of the input of delay driving circuit (5) and shared amplification output circuit (4) joins, the output output timing controling signal of timing control circuit (7) is controlled the output end signal of over-current detection circuit (2), and the output of rectifier power source (6) is supplied with electric leakage and overvoltage signal amplification circuit (3), shared amplification output circuit (4) and delay driving circuit (5) are with dc supply.

2, single-phase multifunctional safe energy-saving controller as claimed in claim 1 is characterized in that, electric leakage and over-voltage detection circuit (1) are by zero sequence current mutual inductor LH, piezo-resistance Rv, resistance R ₁And often open button QA and form, over-current detection circuit (2) is by current transformer H, diode D ₅To D ₉, voltage-stabiliser tube DW ₂With DW ₃, potentiometer RW ₂, resistance R ₁₁To R ₁₃, capacitor C ₃And normally opened contact SK _1-1Form, electric leakage and overvoltage signal amplification circuit (3) are by triode BG ₁, potentiometer RW ₁, resistance R ₂To R ₅And capacitor C ₁Form, shared amplification output circuit (4) is by triode BG ₂, resistance R ₆To R ₈And capacitor C ₄With C ₅Form, delay driving circuit (5) is by time-base integrated circuit IC, relay J ₁, LED, diode D ₁₀, resistance R ₉With R ₁₀And capacitor C ₆Form, rectifier power source (6) is by transformer B, diode D ₁To D ₄, voltage-stabiliser tube DW ₁And capacitor C ₂Form, timing control circuit (7) is by timing switch clock SK ₁And battery E forms.