CN202564918U

CN202564918U - Suspended shock-proof electric device

Info

Publication number: CN202564918U
Application number: CN2012201937802U
Authority: CN
Inventors: 李庆慧; 王勇; 崔风霞; 郭静; 吕秀生; 张启亮; 吴彦立; 李萍; 管珂; 占庆华; 孙长江
Original assignee: 孙长江
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2012-11-28
Anticipated expiration: 2022-05-03

Abstract

A suspended shock-proof electric device can collect current from a power supply main control circuit, collected current can pass through a rectification circuit to enter a filter circuit, an output end of the filter circuit is connected with a remote control (RC) time-delay circuit, an output end of the RC time-delay circuit is connected with a relay through a starting circuit, a relay normally-open contact and a capacitor are arranged on the other circuit output from the rectification circuit, the relay normally-open contact is in serial with a time-delay relay to be connected at two ends of the capacitor, and a normally-open contact of the time-delay relay is arranged in the power supply main control circuit. The suspended shock-proof electric device avoids large area shutdown caused by power grid electricity shaking and has the advantages that the shake-proof electric device is in parallel with an original current main control circuit so as to prevent an original circuit from being affected to work normally even if the shock-proof electric device is damaged; the shock-proof electric device only works in instant undervoltage or pressure loss so as to be high in reliability; and a capacitor (C0) is arranged in the suspended shock-proof electric device to serve as a standby working power supply.

Description

Floated anti-shake electric installation

Technical field

The utility model relates to a kind of apparatus for protecting power supply, specifically when the rolling electricity takes place electrical network, guarantees the protective device of electric equipment continuous operation.

Background technology

" rolling " means electrical network because of being situation such as thunderbolt, short circuit, heavy load starting, occurs that voltage drops significantly or short time voltage is interrupted the several seconds, causes the phenomenon of power consumption equipment cisco unity malfunction.Starter controller equipment such as A.C. contactor, soft starter, variable-frequency governor are adopted in the work of motor mostly; When the rolling electricity, A.C. contactor can discharge, and soft starter and variable-frequency governor also can be shut down; In the commercial production; Usually shut down, stop in emergency and the shutdown of crucial unit can cause big unit even the chain shutdown of whole production device, causes the compelled interruption of continuous flow procedure, process units is compelled because of " rolling " causes many important low voltage motors; Cause enormous economic loss to enterprise, also can cause serious accidents such as fire, blast sometimes.Low voltage motor recurrence controller is not shut down special development for industrial enterprise realizes " rolling ".

Summary of the invention

The purpose of the utility model provides a kind of under the electric situation of electrical network transmission rolling, guarantees the time-delay mechanism of electric equipment safe and continuous operation.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

A kind of floated anti-shake circuit; It gathers electric current from the main power control loop; The electric current that collects gets into filter circuit through rectification circuit, and the output of said filter circuit connects the RC delay circuit, and the output of RC delay circuit connects relay through start-up circuit; On another road circuit of rectification circuit output relay normally open contact and electric capacity are set, are attempted by the two ends of electric capacity after relay normally-closed contact and time-delay relay are connected in series, the time-delay relay normally opened contact is arranged in the main power control loop.

In described main power control loop, start button and stop button are set.

Described time-delay relay normally opened contact and start button are connected in parallel.

Described stop button is connected in series with detecting relay, detects the two ends that relay normally open contact is connected in parallel on electric capacity.

The two ends parallel operation indicating circuit of said relay.

Adopt the utility model of technique scheme, avoided comprising following advantage specifically because of electrical network rolling electricity causes big face to shut down the stopping production phenomenon:

1, the anti-shake electric installation of the utility model is parallelly connected with the primary current main control loop, even anti-shake electrical equipment damages, does not also influence the primary circuit operate as normal;

2, this anti-shake electrical equipment is only just worked during under-voltage or decompression in moment, and reliability is high;

3, establishing capacitor C 0 working power in support in the utility model uses;

4, has the multiple logic blocking function, with anti-misoperation;

5, volume is little, installs very conveniently, can be contained in the button box that stops;

7, the useful life that has overlength;

8, changing conventional in the past voltage sampling is current sampling, contactor CJ work, and this anti-shake electrical equipment just can be worked, and is that the rolling electricity is ready.

Description of drawings

Fig. 1 is the circuit theory diagrams in the utility model and main power control loop.

Fig. 2 is the circuit theory diagrams of anti-shake module among Fig. 1.

Embodiment

Like Fig. 1, shown in Figure 2, at first adopt an anti-shake module and main power control loop to be connected in parallel, promptly 1,2 post of anti-shake module and main power control loop are connected in series, and carry out current sample.Start button QA and stop button TA are set in the main power control loop, and wherein, the parallel connection of 3,4 posts of start button QA and anti-shake module is used to open the utility model; 2, the 3 posts parallel connection of stop button TA and anti-shake module is used when maintenance the utility model.Under the initial condition, press starting button QA, the contactor CJ work in main power control loop, through contactor normally opened contact CJ1 self-sustaining, contactor CJ institute translator normally moves.

The electric current that collects gets into filter circuit through rectification circuit D, and filter circuit is filter capacitor C2.The output of filter capacitor C2 connects the RC delay circuit; The output of RC delay circuit connects relay Z through start-up circuit; Starting circuit is for driving triode T in the utility model; Relay Z is arranged on the collector electrode that drives triode T, the two ends parallel operation indicating circuit of relay Z, and working indicating mainly is the Light-Emitting Diode D3 that is connected in parallel on relay Z.On another road circuit of rectification circuit D output relay normally open contact Z1 and capacitor C 0 are set; After being connected in series, relay normally-closed contact Z2 and time-delay relay Q be attempted by the two ends of capacitor C 0; Time-delay relay normally opened contact Q1 is arranged in the main power control loop, and QA is connected in parallel with start button.

The operation principle of the utility model is:

Under the initial condition, press start button QA, contactor CJ work, floated anti-shake electric current sampling work; One the tunnel through the rectifier bridge rectification, after filter capacitor C2 filtering, supplies with resistance R 1, capacitor C 1; Resistance R 2 drives triode T, and relay Z and working indicating are with power supply.Wherein, resistance R 1 is formed the RC delay circuit after time-delay with capacitor C 1, and voltage makes and drives triode T conducting on the capacitor C 1, and relay Z gets the electrician and does.Another road is through diode D1 rectification, and closed through relay normally open contact Z1 after relay Z work, relay normally-closed contact Z2 breaks off, so can be to capacitor C 0 charging.

When the rolling electricity takes place in electrical network (instantaneous loss of pressure), main power control loop contactor CJ dead electricity, anti-shake module repeat circuit Z dead electricity; Relay normally-closed contact Z2 is closed, and to time-delay relay Q discharge, time-delay relay Q gets the electrician and does capacitor C 0 through relay normally-closed contact Z2; Its time-delay relay open contacts Q1 is closed, and time-delay relay Q1 work duration 2 seconds is after power up within 2 seconds is normal; Contactor CJ work, the motor operation.The electrical network decompression surpasses 2 seconds, time-delay relay Q dead electricity, and time-delay relay open contacts Q1 breaks off; The anti-shake electricity loses function, and through on-the-spot test, motor is reset in 0-1.5; Because effect of inertia, its starting current is bordering on running current, so this device can not produce any impact to electrical network.

Be convenient maintenance the utility model, stop button TA is connected in series with detecting relay Y, detects the two ends that relay normally open contact Y1 is connected in parallel on capacitor C 0.Press stop button TA, maintenance relay Y work, Y1 is closed for its maintenance relay normally open contact, can be to capacitor C 0 discharge, contactor CJ dead electricity contacts the dead electricity motor simultaneously and quits work simultaneously.

Claims

1. floated anti-shake electric installation; It gathers electric current from the main power control loop; The electric current that collects gets into filter circuit through rectification circuit (D); It is characterized in that: the output of said filter circuit connects the RC delay circuit, and the output of RC delay circuit connects relay (Z) through start-up circuit; On another road circuit of rectification circuit (D) output relay normally open contact (Z1) and electric capacity (C0) are set; Be attempted by the two ends of electric capacity (C0) after relay normally-closed contact (Z2) is connected in series with time-delay relay (Q), time-delay relay normally opened contact (Q1) is arranged in the main power control loop.

2. floated anti-shake electric installation according to claim 1 is characterized in that: start button (QA) and stop button (TA) are set in described main power control loop.

3. floated anti-shake electric installation according to claim 2 is characterized in that: described time-delay relay normally opened contact (Q1) is connected in parallel with start button (QA).

4. floated anti-shake electric installation according to claim 2 is characterized in that: described stop button (TA) is connected in series with detecting relay (Y), detects the two ends that relay normally open contact (Y1) is connected in parallel on electric capacity (C0).

5. floated anti-shake electric installation according to claim 1 is characterized in that: the two ends parallel operation indicating circuit of said relay (Z).