CN201399656Y - Discharging circuit used for welding dischargers - Google Patents

Abstract

A discharging circuit used for welding dischargers is characterized in that a control circuit (a) comprises an MCU controller (a1), a threshold detection circuit (a2), a discharge driving circuit (a3)and a protection control circuit (a4), a control circuit (b) comprises a starting switch (b1), a power control logic circuit (b2), a switch circuit (b3), a voltage stabilizing circuit (b4) and a power supply (b5), a high-frequency oscillatory circuit (c) comprises an adjustable transducer (c3) and a charge sampling circuit (c2), and a charging and discharging protection control circuit (d) comprises a transformer circuit (d1), a rectifying circuit (d2), a charging circuit (d3), a discharging circuit (d4), an electrode (d5) and a protection circuit (d6) which are connected via a reasonable circuit structure. The discharging circuit used for welding dischargers removes unreasonable factors of designed circuit structures of the protection circuit, the charging circuit and the discharging circuit, resolves the problem that dischargers can generate instant shock impulse at a control end of a controller, avoids damages on the controller and enables the protection circuit to charge smoothly.

Description

The discharge circuit that is used for welding discharger

Technical field

The utility model relates to a kind of discharge circuit that is used for welding discharger.

Background technology

Usually, metal solder all needs external power supply or fuel gas, and like this, operation is very inconvenient in the open air, in the high mountain, big seagoing vessel.Therefore, be in this construction environment, be electrically connected the technology tradition and adopt modes such as bolt, periphery pressurization, crimping to connect more.But this connected mode joint is aging fast, and the resistance of joint is generally bigger than normal, when big electric current passes through, there is very big hidden danger, service life is not long yet, and especially the lightning protection grounding network in large-scale petroleum chemical base, transformer station, power plant lays, is very easy in the earthed system of intelligent skyscraper accidents caused.For this reason, people have designed the equipment that a kind of metal solder is carried out in mould, the package body that is about to packaging structure is directly put into the mould that needs welding, cover die cover then, and the bar of igniting in the package body stretches out from die cover, the bar of igniting outside stretching out die cover is connected with power supply then, the end that bar stretches in the welding compound pulvis owing to ignite has aperture, simultaneously, people have designed the discharge road of soldering apparatus, and discharger puncture short and moment get angry and produce high temperature, thereby ignite welding compound burning and reacting, so whole process is igniting by hand not, uses very convenient.But in the discharge circuit of present discharger; include by controller circuitry, power control circuit, high-frequency oscillating circuits, discharge and recharge and protect control circuit to form; because the circuit structure of holding circuit and charging circuit, discharge circuit design is unreasonable; in discharge process, can produce the moment impact pulse at the controller control end; very easily cause controller to damage; make holding circuit be in discharge condition all the time, charging can't be carried out.So its circuit structure awaits further to improve.

The utility model content

Technical problem to be solved in the utility model is to provide at above-mentioned prior art present situation that a kind of circuit structure is reasonable, charging effect good and controller is not fragile and prolong the discharger discharge circuit that is used for welding discharger in service life.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the discharge circuit that originally is used for welding discharger, by controller circuitry, power control circuit, high-frequency oscillating circuits, discharge and recharge and protect control circuit to form, it is characterized in that: described controller circuitry includes: the MCU controller, threshold detection circuit, discharge drive circuit and protection control circuit, and described power control circuit includes: firing switch, the power control logic circuit, on-off circuit, mu balanced circuit and power supply, described high-frequency oscillating circuits includes: adjustable converter, the charging sample circuit, and describedly discharge and recharge and protect control circuit to include: transformer circuit, rectification circuit, charging circuit, discharge circuit, electrode and holding circuit; Described MCU controller one input is connected with the output of threshold detection circuit; and the input of threshold detection circuit is connected with an output of charging sample circuit; and another input of MCU controller is connected with the output of mu balanced circuit; and the input of mu balanced circuit is connected with the output of on-off circuit; and the output of on-off circuit is connected with an input of adjustable converter simultaneously; and an input of on-off circuit is connected with power supply; power supply is connected with an input of transformer circuit simultaneously; another input of described on-off circuit is connected with the output of power control logic circuit; and an input of power control logic circuit is connected with firing switch; and another input of power control logic circuit is connected with an output of holding circuit; the output while of described MCU controller and the input of discharge drive circuit; the input of protection control circuit; another input of adjustable converter connects together; and the output of protection control circuit is connected with an input of holding circuit; and another input of holding circuit is connected with an output of charging circuit; the output of described discharge drive circuit is connected with the input of discharge circuit; and described another input of adjustable converter is connected with another output of charging sample circuit; and the input of charging sample circuit is connected with another output of charging circuit; and the output of described adjustable converter is connected with another input of transformer circuit; and the output of transformer circuit is connected with the input of rectification circuit; and the output of rectification circuit is connected with the input of charging circuit; and an output again of charging circuit is connected with an input of electrode, and another input of electrode is connected with the discharge circuit output.

As improvement, described controller circuitry is connected by photoelectrical coupler with holding circuit.Adopt photoelectrical coupler in the protection control circuit, can from machinery MCU controller and protection control circuit be disconnected, can better protect the MCU controller, further eliminate the hidden danger of prior art.

Improve, described controller circuitry wherein also can be provided with the indicator lamp control circuit again.

Improve described power supply again and be preferably battery or battery pack, use is more flexible, more convenient.

Compared with prior art; the utility model adopts controller circuitry to include: the MCU controller; threshold detection circuit; discharge drive circuit and protection control circuit; and described power control circuit includes: firing switch; the power control logic circuit; on-off circuit; mu balanced circuit and power supply; described high-frequency oscillating circuits includes: adjustable converter; the charging sample circuit; and describedly discharge and recharge and protect control circuit to include: transformer circuit; rectification circuit; charging circuit; discharge circuit; electrode and holding circuit; and be connected by reasonable circuit structure; thereby overcome because holding circuit and charging circuit; the irrational factor of circuit structure of discharge circuit design; eliminated discharger and in discharge process, can produce the problem of moment impact pulse at the controller control end; avoid causing the damage of controller, holding circuit can successfully be charged.So this circuit structure is a kind of very practical structure, is worthy of popularization.

Description of drawings

Fig. 1 is the structural circuit block diagram of the utility model embodiment;

Fig. 2 is the circuit diagram of Fig. 1.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, the discharge circuit that is used for welding discharger of present embodiment is by controller circuitry a, power control circuit b, high-frequency oscillating circuits c, discharge and recharge and protect control circuit d to form.Controller circuitry a includes: MCU controller a1, threshold detection circuit a2, discharge drive circuit a3 and protection control circuit a4; and controller circuitry a1 is connected by photoelectrical coupler 1 with holding circuit d6; see shown in Figure 2; and the indicator lamp control circuit also is set among the controller circuitry a, in time to tell control step and result.And power control circuit b includes: firing switch b1, power control logic circuit b2, on-off circuit b3, mu balanced circuit b4 and power supply b5; High-frequency oscillating circuits c includes: adjustable converter c1, charging sample circuit c2; And discharge and recharge and protect control circuit d to include: transformer circuit d1, rectification circuit d2, charging circuit d3, discharge circuit d4, electrode d5 and holding circuit d6.MCU controller a1 one input is connected with the output of threshold detection circuit a2; and the input of threshold detection circuit a2 is connected with the output of charging sample circuit c2; and another input of MCU controller a1 is connected with the output of mu balanced circuit b4; and the input of mu balanced circuit b4 is connected with the output of on-off circuit b3; and the output of on-off circuit b3 is connected with the input of adjustable converter c1 simultaneously; and the input of on-off circuit b3 is connected with power supply b5; power supply b5 is connected with the input of transformer circuit d1 simultaneously; another input of described on-off circuit b3 is connected with the output of power control logic circuit b2; and the input of power control logic circuit b2 is connected with firing switch b1, and another input of power control logic circuit b2 is connected with the output of holding circuit d6.The output of MCU controller a1 connects together with the input of discharge drive circuit a3, the input of protection control circuit a4, another input of adjustable converter c1 simultaneously; and the output of protection control circuit a4 is connected with the input of holding circuit d6, and another input of holding circuit d6 is connected with the output of charging circuit d3.The output of above-mentioned discharge drive circuit a3 is connected with the input of discharge circuit d4, and above-mentioned adjustable another input of converter c1 is connected with another output of charging sample circuit c2, and the input of charging sample circuit c2 is connected with another output of charging circuit d3, and the output of described adjustable converter c1 is connected with another input of transformer circuit d1, and the output of transformer circuit d1 is connected with the input of rectification circuit d2, and the output of rectification circuit d2 is connected with the input of charging circuit d3, and the output again of charging circuit d3 is connected with the input of electrode d5, and another input of electrode d5 is connected with discharge circuit d4 output.Above-mentioned power supply is adopted as battery or battery pack, specifically can decide by designing requirement.A in above-mentioned is meant a district that dotted line surrounds, and b is meant the b district that dotted line surrounds, and c is meant that the c district that dotted line surrounds, d are meant the d district that dotted line surrounds, and sees shown in Figure 1.

Below the course of work of the present utility model is described further;

Working power of the present utility model adopts dry cell b5, and voltage is 12V.

When firing switch b1 was closed, power control logic circuit b2 produced control signal, driving switch circuit b3 conducting, and battery b5 produces the 3.3V DC voltage by mu balanced circuit b4, and a1 provides working power for the MCU controller, and simultaneously, but DC-DC modulation parallel operation c1 gets.

After MCU controller a1 got electric work, a3 forbade discharge circuit d4 work by the discharge drive circuit, make holding circuit d6 be in detected state by protection control circuit a4 simultaneously, and the adjustable converter c1 of control DC-DC started working.

After DC-DC the is adjustable converter c1 work, produce higher-order of oscillation pulse, control transformer circuit d1 produces ac high-voltage, the DC voltage that charging circuit d3 is raise gradually by rectification circuit d2.In this process, charging sample circuit c2 follows the tracks of the DC voltage that raises gradually, feeds back to the adjustable converter c1 of DC-DC, and the higher-order of oscillation pulse generation of its output is changed.Control is when voltage rises to preset threshold, and charging sample circuit c2 makes threshold detection circuit a2 state variation, and MCU controller a1 changes thus to controlling the adjustable converter c1 of DC-DC and sends control signal, and it is quit work.Meanwhile, MCU controller a1 triggers discharge circuit d4 conducting by discharge drive circuit a3, forms discharge loop, and produces high-voltage pulse by electrode d5.So far, the once normal course of work finishes.Carry out task again, must disconnect firing switch b1, closed once more, start the new course of work.

In the charging process; the holding circuit d6 that is in detected state follows the tracks of the DC voltage that raises gradually simultaneously; if because certain fault makes charging voltage surpass preset threshold; holding circuit d6 will be by power control logic circuit b2 stopcock circuit b3; thereby make the adjustable converter c1 of MCU controller a1 and the DC-DC power supply of losing the job, cease operation.

When hindering cease operation or course of normal operation interruption of work midway for some reason, holding circuit d6 then is in discharge condition, and the electric charge that stores among the charging circuit d3 that releases automatically prevents that electric shock accidents from taking place.

Claims (4)

1, a kind of discharge circuit that is used for welding discharger, by controller circuitry (a), power control circuit (b), high-frequency oscillating circuits (c), discharge and recharge and protect control circuit (d) to form, it is characterized in that: described controller circuitry (a) includes: MCU controller (a1), threshold detection circuit (a2), discharge drive circuit (a3) and protection control circuit (a4), and described power control circuit (b) includes: firing switch (b1), power control logic circuit (b2), on-off circuit (b3), mu balanced circuit (b4) and power supply (b5), described high-frequency oscillating circuits (c) includes: adjustable converter (c1), charging sample circuit (c2), and describedly discharge and recharge and protect control circuit (d) to include: transformer circuit (d1), rectification circuit (d2), charging circuit (d3), discharge circuit (d4), electrode (d5) and holding circuit (d6); Described MCU controller (a1) input is connected with the output of threshold detection circuit (a2); and the input of threshold detection circuit (a2) is connected with an output of charging sample circuit (c2); and another input of MCU controller (a1) is connected with the output of mu balanced circuit (b4); and the input of mu balanced circuit (b4) is connected with the output of on-off circuit (b3); and the output of on-off circuit (b3) is connected with an input of adjustable converter (c1) simultaneously; and an input of on-off circuit (b3) is connected with power supply (b5); power supply (b5) is connected with an input of transformer circuit (d1) simultaneously; another input of described on-off circuit (b3) is connected with the output of power control logic circuit (b2); and an input of power control logic circuit (b2) is connected with firing switch (b1); and another input of power control logic circuit (b2) is connected with an output of holding circuit (d6); the output while of described MCU controller (a1) and the input of discharge drive circuit (a3); the input of protection control circuit (a4); another input of adjustable converter (c1) connects together; and the output of protection control circuit (a4) is connected with an input of holding circuit (d6); and another input of holding circuit (d6) is connected with an output of charging circuit (d3); the output of described discharge drive circuit (a3) is connected with the input of discharge circuit (d4); and another input of described adjustable converter (c1) is connected with another output of charging sample circuit (c2); and the input of charging sample circuit (c2) is connected with another output of charging circuit (d3); and the output of described adjustable converter (c1) is connected with another input of transformer circuit (d1); and the output of transformer circuit (d1) is connected with the input of rectification circuit (d2); and the output of rectification circuit (d2) is connected with the input of charging circuit (d3); and an output again of charging circuit (d3) is connected with an input of electrode (d5), and another input of electrode (d5) is connected with discharge circuit (d4) output.

2, discharge circuit according to claim 1 is characterized in that: described controller circuitry (a1) is connected by photoelectrical coupler (1) with holding circuit (d6).

3, discharge circuit according to claim 2 is characterized in that: described controller circuitry (a) wherein is provided with the indicator lamp control circuit.

4, according to claim 1,2 or 3 described discharge circuits, it is characterized in that: described power supply (b) is battery or battery pack.

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