CN2181133Y

CN2181133Y - Pulse-insulating solid relay

Info

Publication number: CN2181133Y
Application number: CN 93226449
Authority: CN
Inventors: 王仕达
Original assignee: Shanghai Institute of Organic Chemistry of CAS
Current assignee: Shanghai Institute of Organic Chemistry of CAS
Priority date: 1993-10-18
Filing date: 1993-10-18
Publication date: 1994-10-26
Anticipated expiration: 2003-10-18

Abstract

The utility model relates to a pulse-insulating solid relay which is composed of a control switch, a phase-shift pulse trigger and a signal controller, and a pulse filter can be arranged between the control switch and the phase-shift pulse trigger. The utility model only needs to be connected with an external switch. The utility model is a solid relay which has the advantages of simple structure, safety, small volume, convenient installation, and large control power, and is suitable for industrial use and the switch control of various electric appliances, instruments, meters, and temperature control apparatuses and also suitable for various illumination and general domestic appliances.

Description

Pulse-insulating solid relay

The utility model is that solid-state relay is isolated in a kind of pulse, be to be a kind of contactless for load, and the control point only needs the pulse of power supply or outside connected switch to isolate solid-state relay.

The SSR solid-state relay of Voltage regulating relay or photoelectric coupling isolation at present all need connect galvanic electronic switch at the control point, not only circuit structure complexity, big, the installation inconvenience of volume, and also the scope of application is restricted.So a kind of safety, the volume solid-state relay that only needs outside connected switch little, easy for installation, simple in structure are still the problem that people constantly explore.

The purpose of this utility model provides a kind of needs the pulse of outside connected switch to isolate solid-state relay.The principle of its design is by control switch, phase-shift pulse trigger and signal controller series connection series connection in succession, and the electronic circuit of being connected with control switch again by signal controller constitutes.When external 220V or 380V alternating voltage, be connected to by load on the contact of the utility model control switch, send pulse signal, make signal controller be subjected to the induction of trigger current and form high pressure to isolate through the phase-shift pulse trigger, the electric current of its output promotes control switch work, starting load.On signal controller, can tap make the signal controlling point.When the signal controller upper contact is connected, trigger the control switch conducting, otherwise when the signal controller upper contact disconnects, the control switch electric current is closed.Also can take opposite contact line connecting method, when promptly the signal controller upper contact was connected, control control switch electric current disconnected, otherwise, when the signal controller upper contact disconnects, make the control switch conducting.

Solid-state relay is isolated in pulse of the present utility model, and the pulsed filter of can also connecting between control switch and phase-shift pulse trigger interferes with each other to suppress inside and outside pulse.

The circuit that solid-state relay is isolated in pulse of the present utility model can further describe as follows: constitute control switch by bidirectional triode thyristor, by capacitor C ₃, C ₄With bidirectional trigger diode and L ₃Winding constitutes the phase-shift pulse trigger, by isolating transformer B ₂, B ₃And L ₄, L ₅Winding constitutes signal controller, series connection successively mutually, and control signal and power supply high pressure are isolated, and guarantee the handling safety use, and signal controller are connected with control switch again.Can be from signal controller L ₄, L ₅The control point is done in tap respectively, can also be from L ₄, L ₅Between tap do the 3rd control point.The multipole power amplification function of control switch tool, the controllable load electric current.When AC power by after being loaded to control switch, the outside connected switch that the contact on the signal controller or its link to each other, may command control switch conduction or disconnect, and then reach the running of control load.

The solid-state relay pulsed filter of can also connect is isolated in pulse of the present utility model between above-mentioned control switch and multiphase pulse trigger, interfere with each other with radio frequency inside and outside preventing.This pulsed filter is by a L ₁, L ₂Pulse transformer and capacitor C that winding is formed ₁, C ₂Constitute pulsed filter.

Bidirectional triode thyristor of the present utility model can be one, also can be the compound circuit that is made of a bidirectional triode thyristor more than the promotion.Usually adopt a bidirectional triode thyristor can meet the demands.But when controlling large current load, also can adopt 1-5 bidirectional triode thyristor, recommend the control switch of 1-3 bidirectional triode thyristor composition, can satisfy the needs of 1-300 ampere load for satisfying.

B in the utility model ₂Or and B ₃Preferably adopt easy ferrite bead.

C in the solid-state relay is isolated in the utility model pulse ₃Also resistance can be adopted, requirement of the present utility model can be satisfied.

That the utility model not only has is simple in structure, volume is small and exquisite, easy for installation, safe in utilization, advantage that power controlling is big, widely applicable and cheap, only needs outside connected switch.Pulse of the present utility model is isolated solid-state relay and be can be used as switch, and the control of household electrical appliance, instrument and meter as can being widely used in also can be used to throw light on, the control of large-scale color lamp, industrial liquid level and high-power mechanical-electrical equipment such as pump, air draft.

Can further understand the utility model by following embodiment.

Fig. 1 is the fundamental diagram that solid-state relay is isolated in pulse.

Fig. 2 is a kind of fundamental diagram that the pulse isolation solid-state relay of pulsed filter is arranged.

Fig. 3-Fig. 4 is the oblique view that solid-state relay is isolated in a kind of pulse.

Fig. 5-Fig. 7 is the circuit diagram that solid-state relay is isolated in a kind of pulse.

Fig. 8 is the control circuit winding diagram that solid-state relay is isolated in a kind of pulse.

Fig. 9 is the control circuit winding diagram that solid-state relay is isolated in another kind of pulse.

1-control switch among the figure, 2-phase-shift pulse trigger, 3-signal controller, 4-load, 5, the 6-external AC power supply, 7,8, the contact on the 9-signal controller, 10-pulsed filter, 11-shell, 12-indicator light, K-outside connected switch.

Fig. 3 has the pulse of the binding post of the contact on 5 and 6 external AC power supplies and 7,8 and 9 signal controllers to isolate solid-state relay on a kind of shell, can adorn panel on this shell.Fig. 4 is the oblique view that the pulse isolation solid-state relay of indicator light 12 is housed.

Fig. 5 is a kind of control switch of being made up of a bidirectional triode thyristor, by capacitor C ₃, C ₄With two-way trigger diodes DB ₃And L ₃The signal pulse trigger that winding constitutes, isolating transformer B ₂, B ₃And L ₄, L ₅The signal controller that winding constitutes, they are connected in series successively, wherein by B ₃, L ₆The control switch of a winding and a bidirectional triode thyristor is connected into the switch loop again, thereby solid-state relay is isolated in the pulse of control load electric current.Isolate the solid-state relay oblique view as shown in Figure 3 by the pulse that sort circuit constitutes.Its control line wiring circle is plotted in Fig. 6 or Fig. 7, when 7 are connected switch (K) with the contact of 9 signal controller, and switch general rule load conducting, when switch closed, load quit work.Perhaps 7 of signal controller is connected with 9 contact, is connected with outside connected switch with 7 or 9 by contact 8, at this moment, when switch is disconnected, the load galvanization, when switch lead to, load current broke.The current loading of common may command 1-100 ampere.C wherein ₃Can adopt resistance, as the resistance of 15K.

Figure and 6 increases a bidirectional triode thyristor on the control switch circuit of the pulse isolation solid-state relay of Fig. 5, and by D ₁, D ₄Light-emitting diode and D ₂, D ₃Ballast diode and R ₁And R ₂Resistance is formed indicator light circuit.Its oblique view as shown in Figure 4.

Fig. 7 is a kind of pulse isolation solid-state relay that pulsed filter is arranged, and its basic circuit such as Fig. 5 only are to be in series with pulsed filter between the trigger in control switch and signal arteries and veins, and this filter is the L by pulse transformer ₁, L ₂Winding and capacitor C ₁And C ₂Constitute.The signal pulse controller is drawn two

contacts

7 and 9.

Control switch among Fig. 5-Fig. 7 can be made up of a bidirectional triode thyristor, also can be by more than one, as 2 or 3 compound circuits that bidirectional triode thyristor is formed, as Fig. 8 and control switch circuit shown in Figure 9, at this moment, the running of may command 1-300 Ampere currents load, at this moment C ₃Can be the electric capacity of 0.022 μ F, C ₄Be the electric capacity of 3300P.C ₃Also can be resistance 15K.Control applicable to the switch of industrial various electrical equipment, instrument, instrument, temperature control and equipment.

Claims

1, solid-state relay is isolated in a kind of pulse that contains bidirectional triode thyristor and shell, it is characterized in that the control switch that one or more bidirectional triode thyristor constitutes, phase-shift pulse trigger and signal controller are connected successively, and signal controller also forms this control switch of circuit controls with above-mentioned control switch.

2, solid-state relay is isolated in a kind of pulse as claimed in claim 1, it is characterized in that also being in series with pulsed filter between described control switch and phase-shift pulse trigger.

3, solid-state relay is isolated in a kind of pulse as claimed in claim 2, it is characterized in that described pulsed filter is by a L ₁And L ₂Pulse transformer and capacitor C that winding is formed ₁, C ₂The pulsed filter that constitutes.

4, solid-state relay is isolated in a kind of pulse as claimed in claim 1 or 2, it is characterized in that described phase-shift pulse trigger is by capacitor C ₃, C ₄With bidirectional trigger diode and L ₃Winding constitutes.

5, solid-state relay is isolated in a kind of pulse as claimed in claim 1 or 2, it is characterized in that described signal controller is by isolating transformer B ₂, B ₃And L ₄, L ₅The winding series connection constitutes.

6, solid-state relay is isolated in a kind of pulse as claimed in claim 5, it is characterized in that described isolating transformer B ₂It is ferrite bead.

7, solid-state relay is isolated in a kind of pulse as claimed in claim 5, it is characterized in that described isolating transformer B ₃It is ferrite bead.

8, solid-state relay is isolated in a kind of pulse as claimed in claim 4, it is characterized in that described C ₃Be resistance.