CN210867199U - DC electric storage type voltage compensator - Google Patents

Abstract

The utility model relates to a direct current electric power storage formula voltage compensator, direct current electric power storage formula power supply unit, direct current electric power storage formula voltage compensator can provide extra power for consumer, can use the electric device main circuit power consumption to reduce when the load, and or suspend the electricity of using the main circuit, and then use the electric device main circuit voltage to rise again, can effectually alleviate or avoid because of the power supply is not enough and/or the voltage drop that the circuit overloads and arouse, solve because of the influence of power supply line overlength to the construction. The direct current storage type voltage compensator is arranged in a power supply cabinet of the welding machine and connected into a direct current circuit in a welding machine power supply in the prior art in parallel, and a storage battery provides work compensation voltage stabilization electricity to facilitate moving work.

Description

DC electric storage type voltage compensator

Technical Field

The utility model relates to a power electronic technology field, specific direct current electric power storage formula voltage compensator that says so, direct current electric power storage formula voltage compensator can provide extra power for consumer, has also played the beneficial effect of the effect of stabilizing the electric wire netting simultaneously. And to a welding machine provided with the dc storage type voltage compensator.

Background

In life, electricity is used by 50Hz alternating current, people often encounter different degrees of dimming of light, the time is short, generally only dozens of milliseconds to hundreds of milliseconds, and at most, the time does not exceed a few seconds, and the time is too short, and the times are not too many, so that people cannot notice the time. These are phenomena of instantaneous overload of the line caused by instantaneous impact on the power grid caused by the starting of a higher-power electric appliance in the same line, such as the starting of a higher-power household appliance, such as a high-power air conditioner, such as the starting of a high-power washing machine, and especially instantaneous reverse rotation, such as a high-power sweeper, such as a high-power electric drill or an impact drill or a hand grinder, which have a large instantaneous current at the moment of connection. In particular, the electric welding machine called 'electric tiger' works continuously and intermittently, when the welding is started, the light is obviously darkened until the welding rod leaves a workpiece and enters a standby state, the brightness of the light is restored, so that people can touch the electric welding machine, although the line is enlarged in the industry, the high-power electric equipment is more, and the power is higher as follows: large electric welding machine, crane and oil press.

These transient overloads can cause significant damage to the consumer itself and the grid, such as circuit surges.

The damage to the overlarge starting current (the no-load starting current can reach 4-7 times of the rated current, and can reach 8-10 times or more when the starting is carried out), can cause the voltage of a power grid to be reduced, influences the normal operation of other electric equipment, and can also cause the action of under-voltage protection to cause the harmful tripping of the equipment. Meanwhile, the motor winding can be heated by overlarge starting current, so that the insulation aging is accelerated, and the service life of the motor is influenced.

Because of the voltage drop caused by the insufficient transmission capacity of the line, the traditional voltage stabilizer is not easy to use, because the traditional voltage stabilizer can increase the input current in order to increase the output voltage, and because the line length and the line resistance are large, the line can not transmit enough electric energy, and the voltage stabilizing effect can not be achieved substantially.

Therefore, to solve this problem, it is desirable from the source that the load of the line cannot be increased because of the voltage drop caused by insufficient transmission capacity of the line, and that there is another auxiliary power source from where the auxiliary power source should come?

The utility model people found in the research have a common characteristic that the current of the utility model is large in the moment or short time, and the utility model is in a standby no-load or light-load state most of the time. How can the power grid transmission capacity in a no-load or light-load state, which is in standby state most of the time, be utilized as an auxiliary power supply? This has let the utility model people think about for years, has also looked up many relevant literatures, has all failed to find relevant report, and the utility model people think, if want to utilize the conveying capacity of idle electric wire netting, then at first just must think about the way electric energy storage of the ability that can carry in the idle electric wire netting, as auxiliary power source. In the electrical characteristics, only direct current can be stored in a storage battery, but an inverter is used when 50HZ alternating current is obtained, and a grid-connected inverter is used when the alternating current is integrated into an equipment power grid. This lets the utility model people be absorbed in the bureau of ARUM, has had unexpected discovery through countless tests, and utility model people have discovered their new common point: because the alternating current is 50HZ alternating current, the 50HZ alternating current can not be subjected to frequency conversion and inversion, and the 50HZ alternating current can be subjected to frequency conversion and inversion only after being rectified into direct current and filtered. Until now, the utility model people find that the direct current can be merged into the inverter by winding a large circle outside, and then return to the starting point, so that the direct current can be easily merged into the inverter, and the inverter only needs to use an off-grid square wave inverter, thereby not only saving the manufacturing cost, but also simplifying the technology,

through many experiments, the experiment is very successful, and a successful experiment is the biggest harvest for the utility model people, and everybody is excited for this, and this will mean that a novel product will come out, can bring a lot of facilities for the national people. In order to further optimize and synthesize the circuit for the product, the discovery that the equivalent storage battery voltage can be used for frequency conversion and inversion is also unexpected, so that the off-grid inverter is saved.

The circuit of the utility model is developed, the equivalent storage battery voltage is the working principle of alternating current through the duty ratio rectification of the switching power supply or the transformation rectification, the alternating current is changed into direct current or pulse direct current with the equivalent voltage of the storage battery, or the storage battery is connected to the equivalent alternating current voltage (DC 305V is equivalent to AC220, but the mode is not good when the grid voltage is low, and is not good when the grid voltage is low), the power can be naturally obtained from the storage battery when the grid voltage is low, the storage battery can be naturally charged when the grid voltage is low, and the storage battery can be charged and discharged through auxiliary control.

The DC output equivalent to the voltage output of the storage battery has the following advantages: firstly, very pure direct current can be output; and secondly, the voltage difference of the storage battery can be output (for example, when the rectified direct current is not available, the voltage is lower than the voltage of the storage battery, and the storage battery can supply power to the equipment instinctively). Through experiments, the voltage stabilizing effect is better, and the requirement on voltage stabilization is high only by increasing the switching power supply and the storage battery.

In the continuous research, a new discovery is that a magnetic welding gun provided with an ultra-under-voltage protector needs at least about two seconds of time delay when being electrified, and the magnetic welding gun is started just about two seconds, and the magnetic welding gun can be started continuously after the ultra-under-voltage protector is electrified about two seconds. Therefore, the utility model discloses can pass through the mode selection, let also let this magnetism welder start when the super undervoltage protection ware goes up the electricity, can work after the super undervoltage protection ware goes up the electricity completion like this, half the time of saving.

When the voltage is too high, the overvoltage and undervoltage protector turns off the input power and does not influence the work of the magnetic welding gun, and when the overvoltage and undervoltage protector enters the time delay electrification of about two seconds again, the work of the magnetic welding gun is not influenced. In the continuous research, the new discovery shows that the equivalent storage battery voltage has great help to the filtering of the circuit, has good absorption to the instant high voltage and effectively protects the circuit.

In particular, in tunnel construction, a power supply line with a corresponding cross section is provided according to the power and current carrying of electric equipment. However, in tunnel construction, the power supply line needs to be transported remotely, and the line resistance of the power supply line must be considered, and the longer the distance is, the larger the line resistance is, the larger the cross section area of the power supply line needs to be, and the input voltage needs to be increased. In tunnel construction, a transmission line is hundreds to thousands of meters long, the sectional area of an electric wire required by an electric device for a power supply line needs to be increased, and the sectional area of the power supply line is calculated by a line resistance formula and is several times larger than that of the power supply line calculated according to the interception area. Under present most construction conditions, cost, the loaded down with trivial details nature of installation and the unplanned power consumption condition are considered to the construction side, and the power supply line that provides usually all fails to reach standard, just can use basically, but if meet two or a plurality of large-scale consumer and need the simultaneous power consumption, just must lead to the fact the interact, and the not enough of voltage damages equipment.

In this case, due to the long line and the large line resistance, the voltage at the input terminal of the device drops rapidly when the device is operated with a large electric device, and a further rapid drop in voltage occurs if a conventional voltage regulator is used. Because the conventional voltage stabilizer increases the input current in order to increase the output voltage, when the line is long and the line resistance is large, the line cannot transmit enough electric energy, and the function of providing a stable power supply cannot be achieved. That is, the conventional manostat cannot solve the problem in tunnel construction.

In particular, for the welding machines used in tunnel construction: the magnetic welding gun is single-phase, the normal use power is 2000W to 3500W, the input current is 9A-16A, the safe current carrying of a 1.5 square cable is 5A-8A, and the requirements are far beyond the requirements, so the voltage drops rapidly when the welding gun works, the voltage rises back when the welding gun is standby, the voltage is 220V when the welding gun is standby at most, and the voltage drops rapidly to about 150V when the welding gun works, thereby the normal use of the welding machine is greatly influenced, and the equipment is easily damaged. And many times, two or more electric equipment are inserted into one extension socket, and especially when the electric welding machine on the same line is used, the use of the welding machine is influenced.

The excavation operation construction in the tunnel is blasting construction, stone slag can fly far during blasting, and although an electrician withdraws a lamp line far, lamps and wires are damaged by splashed stones. Meanwhile, when slag is produced, large vehicles need to meet and turn around in the tunnel, and the line and the light are easy to damage.

The electric wire in the tunnel extends along the advancing direction, the construction of multiple working faces is carried out in the extending line, for example, the excavation operation at the forefront, the danger removing operation is carried out, the supporting operation is carried out at one point, the waterproof board hanging operation of the utility model is carried out at one point, the reinforcing steel bar laying operation is carried out at one point, the two-lining operation is carried out at one point, the polishing and repairing operation is carried out at one point, the excavation operation is carried out at one point, the reinforcing steel bar laying operation is carried out at one point, the concrete beating operation is carried out at one point, the formwork erecting operation of the ditch cable trough is carried out at one point, the concrete beating operation of the ditch cable trough is carried out at one point, the formwork stripping operation of the ditch cable trough is carried out at one point, the polishing operation of the ditch cable trough is carried out at one point, the peripheral flaw detection operation is carried out at one point, the peripheral punching and grouting reinforcement operation is carried, the next place is the inner wall decoration operation, the next place is the ditch cable trough cover prefabrication operation, the next place is the ditch cable trough cover mounting operation, and the air compressor air feed iron pipe and the ventilation pipe in the tunnel are also along going together, and influence each other, and these must not avoid damaging the electric wire of erectting.

Zero line when the circuit of outside has been broken, will appear voltage zero drift, and the electricity that voltage zero drift was very unstable, perhaps very high also perhaps very low, at this moment when too high by super undervoltage protector disconnection power supply of voltage, if when too low, just by the utility model discloses direct current electric power storage formula voltage compensator provides the power.

Many times because need spread when hanging the waterproof board, the working face does not have the electricity, just has not had light, and at this moment the workman can only work after the electrician on duty maintains the circuit, because the tunnel is the tunnelling formula construction, and the electrician is from the room on duty of entrance to a cave for a long time, just so as to miss the time, at this moment use the utility model discloses a light magnetism welder, this light magnetism welder host computer both sides have enough powerful light, and built-in battery also supplies power to magnetism welder, so can not influence work, and isoelectric has just can be to this magnetism welder built-in battery charging, just so can guarantee the power supply when the short time has a power failure.

In addition, in the structure of the welding machine, two high-frequency wires and three control wires and a low-voltage power line share one cable (a five-core cable), and high frequency is easy to sense the control wires and the low-voltage power line during working, so that components in the low-voltage line are easy to damage. The space of the gun head is extremely limited, and a high-precision filter circuit is high in manufacturing cost and large in size, so that the high-precision filter circuit cannot be used, and only a simple filter of an inductor and a capacitor can be used, so that low-voltage components are easily influenced by residual high frequency, and a fan temperature measurement speed regulator cannot be used; meanwhile, the fan temperature and speed measuring and regulating device is large in size, difficult to install in the gun head, high in manufacturing cost and easy to damage due to the influence of residual high frequency, so that the fan can only be kept to operate at a high speed for a long time once the fan is started, the service life of the fan is short, and more importantly, the fan is easy to damage due to the influence of the residual high frequency. The other usage mode is that the fan is powered off when in work and powered on again when in standby, so that the fan is easy to damage when being frequently started, and the fan is also in a high-speed running state when in standby for a long time and is easy to damage. Therefore, a new fan control method is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned problem, provide a direct current electric power storage formula voltage compensator, during the voltage compensation of special welding machine that is used for, concrete technical scheme is as follows:

a direct current electric storage type voltage compensator at least comprises a charger, a storage battery, an inverter and a rectifier which are connected in sequence; or at least comprises a charger, a storage battery and a one-way diode which are connected in sequence, and a switching power supply which is connected with the charger, the storage battery and the one-way diode in parallel; or at least comprises a switch power supply and a storage battery which are connected in sequence; or at least comprises a charger and a storage battery which are connected in sequence; or at least comprises a switch power supply and a one-way diode which are connected in sequence, and a storage battery is connected in front of the one-way diode; or at least comprises a charger and a one-way diode which are connected in sequence, and the storage battery is connected in front of the one-way diode.

Further, the storage battery is one of a graphene storage battery, a lead-acid storage battery, a nickel-hydrogen storage battery, a lithium ion battery, a nickel-cadmium battery, a sodium-sulfur storage battery, a nickel-zinc storage battery or a flywheel battery;

further, the storage battery is connected in series or in parallel singly or in two or more than two; the voltage of the storage battery is 6V, 9V, 12V, 18V, 24V, 36V, 48V, 60V, 72V, 300V or other required voltage volts; the voltage of the storage battery is lower than the voltage after rectification of the alternating current, and the storage battery is provided with a voltmeter.

Further, the inverter is an off-grid square wave inverter, an off-grid sine wave inverter or a grid-connected sine wave inverter;

the rectifier is a bridge rectifier or a bridge rectifier;

the bridge rectifier is a bridge diode; the bridge rectifier is a full-bridge rectifier consisting of four diodes or a half-bridge rectifier consisting of two diodes;

the switch power supply is a power switch power supply or a rectification power supply after voltage reduction of a transformer in the prior art;

the bridge rectifier diode is in a pin type, a terminal screw fixed type, a pin welding type or a patch type.

Further, the storage battery is internally installed or externally accessed; the external access type is that the positive electrode and the negative electrode of a storage battery which is internally installed are led out of a wiring port through two-pin or three-pin jacks and are accessed to the external storage battery; or the external access type means that the positive electrode and the negative electrode of the internally installed storage battery are accessed into the external storage battery and the PLC controller leads out a wiring port through a four-pin jack or a five-pin jack to control the charger accessed into the external storage battery; or the external access type means that the positive electrode and the negative electrode of the internally installed storage battery are accessed into the external storage battery and the PLC controller leads out a wiring port through a six-pin or seven-pin jack to control the charger accessed into the external storage battery;

the wiring port is a wire terminal, a safety plug, an aviation plug, a primary-secondary plug, a screw wiring terminal or a plug-in wiring terminal; the wiring port is circular and is triangular, rectangular or square; the wiring port is one or a combination of two or more; the wiring port is a two-pin jack or a three-pin jack or a four-pin jack or a five-pin jack or a six-pin jack; the contact pin is cylindrical or round banana or rectangular or square with grooves.

Furthermore, the direct current storage type voltage compensator is of a built-in or external access type or one of a built-in and external access type together; the direct current storage type voltage compensator is a combination of one, two or more.

Furthermore, the direct current output of the direct current storage type voltage compensator is connected in parallel to the electric equipment, and the parallel connection refers to a circuit or an element which is connected in parallel with the direct current output of the rectifier of the electric equipment and enters the electric equipment after the rectifier.

Furthermore, the direct current storage type voltage compensator is connected in parallel with the anode and the cathode of a filter capacitor behind a rectifier in the welding machine main machine, and forms a parallel circuit with the rectifier of the welding machine.

Further, a gun head switch of the welding machine is electrically connected with an intermediate relay in a welding machine main machine;

the mode selection switch is a rotary type selection switch or a PLC interface type touch screen button selection switch; the PLC and the touch screen are integrated machines or split machines.

Further, the working states of an inverter and a charger of the direct current storage type voltage compensator are directly controlled by a gun head switch; or the gun head switch controls the intermediate relay, or the gun head switch controls the intermediate relay and the time relay, and further the working states of the inverter of the direct current storage type voltage compensator and the charger are controlled through the intermediate relay or the time relay; or the mode selection switch and the PLC controller, and the intermediate relay or the time relay control the PLC controller to control the working states of the inverter and the charger of the direct current storage type voltage compensator; the working state is that the welding machine or the inverter is not charged when output exists and is charged when standby;

the welding machine is also provided with an ultra-undervoltage protector synchronous self-checking device;

when the synchronous self-check is starting, the mode switch is used for simultaneously turning on the ultra-undervoltage protector to delay power-on and synchronously start the power supply of the magnetic welding gun so as to synchronously finish or finish in sequence; when the voltage is too high, the overvoltage and undervoltage protector turns off the input power and does not affect the work of the magnetic welding gun at the same time, and when the overvoltage and undervoltage protector enters the time-delay electrification for about two seconds again, the work of the magnetic welding gun is not affected.

Further, the magnetic welding gun main machine part is provided with an illumination light source, and/or the gun head part is provided with an illumination light source;

the lighting light source is one or more of an LED light source, a tungsten filament bulb light source, a tungsten light source, a xenon light source, a fluorescent light source or a neon light source;

the LED light source is one or more of an LED plastic package flat lamp, an LED metal shell spotlight, an LED plastic shell spotlight or an LED spotlight;

the LED light source is one or more of white, warm white or warm color;

the light source switch control mode of the main machine and the gun head is as follows: the LED light source is controlled by one of a self-reset switch, a dimming switch which is normally on after the switch is turned on, an LED light source which is controlled by a self-reset switch, and is turned off after the self-reset switch is released, or a dimming switch which is used for adjusting the intensity of the light source;

the connection mode of rifle head lamp does: the power panel of the main machine is sequentially connected with an intermediate relay and a time delay disconnection relay, and a cooling fan and a gun head lamp in the gun head are controlled in parallel; or a gun head switch is arranged in the gun head and is connected in parallel to control the cooling fan and the gun head lamp, a time delay disconnection relay is arranged in front of the cooling fan, and a lamp switch is arranged in front of the gun head lamp; or the intermediate relay and the time delay disconnection relay are sequentially connected behind the main machine power supply board, the cooling fan and the gun head lamp are controlled in parallel, and the storage battery and the lamp switch are sequentially arranged in front of the gun head lamp; or a gun head switch is arranged in the gun head and is connected in parallel to control the cooling fan and the gun head lamp, a delay disconnection relay is arranged in front of the cooling fan, and a storage battery and a lamp switch are arranged in front of the gun head lamp; or the intermediate relay and the time delay disconnection relay are sequentially connected behind the main machine power supply board, the intermediate relay directly passes through the storage battery and the lamp switch and is connected with the gun head and the like, and the time delay disconnection relay is directly connected with the cooling fan; or an intermediate relay and a fan temperature control regulator are sequentially connected behind the main machine power supply board, the intermediate relay is directly connected with the gunpoint lamp through the storage battery and the lamp switch, and the fan temperature control regulator is directly connected with the cooling fan.

Furthermore, the power supply mode is auxiliary power supply or all short-time power supply; the duration of the direct current storage type voltage compensator for providing additional power supply for the electric equipment at a time is as follows: one second to five seconds, within one minute, within three minutes, within five minutes, within ten minutes, within twenty minutes, within thirty minutes, within forty minutes, within fifty minutes, or within sixty minutes, depending on the battery capacity; the total duration of the power supply interval time is more than or equal to the working time.

The utility model provides a direct current electric power storage formula voltage compensator can provide extra power for consumer, can make the consumer main circuit power consumption reduce, and then makes the consumer main circuit voltage rise again. The utility model discloses direct current electric power storage formula voltage compensator can effectually alleviate or avoid the voltage drop that the circuit overload load arouses, solves the influence to the construction because of the power supply line overlength.

To being provided with the utility model provides a direct current electric power storage formula voltage compensator's welding machine, owing to weld a hot melt piece for the tunnel, only be 1 to 3 seconds usually with the electrofusion time, the welding machine no longer supplies power after having welded, treats that the welding next needs pause 1 to 3 minutes, (because the welding hot melt piece is the high altitude migration operation in the tunnel, so remove slowly), so form welding machine operating time very short, and the long characteristics of stand-by time. The voltage compensator is connected in parallel to the welding machine, the storage battery therein provides electricity for work compensation and voltage stabilization, and the voltage compensator is controlled by the relay and the controller to be not charged during work and charged during standby so as to ensure that the welding machine has a stable power supply during use.

Because the environment in the tunnel construction is bad, the voltage is not only unstable in the construction, when the plug is damaged, a worker can also mistakenly connect the magnetic welding gun power supply to 380V (the working voltage of the magnetic welding gun is 220V, the magnetic welding gun is a live wire and a zero wire, the culture of the worker is low, the concept of electricity is obscured, and the worker only needs to connect two wires to a knife switch, so that the two wires are usually connected to the two live wires of the two knife switches, and the 380V is connected as a result), so that the magnetic welding gun power supply is easy to damage, the ultra-undervoltage protection can be used, because the ultra undervoltage protection device needs about two seconds of ultra undervoltage detection after being opened, the magnetic welding gun power supply just needs about two seconds of self-checking when being started, and then four seconds of self-checking is needed when the magnetic welding gun power supply is started, the utility model can be set by a special switch, a mode switch, a PLC switch or the PLC switch, synchronous self-checking is achieved, half of self-checking time can be saved, and working efficiency is improved.

Drawings

FIG. 1A shows a first circuit connection mode of a built-in installation type DC storage type voltage compensator;

FIG. 1B shows a second circuit connection mode of the built-in mounting type DC storage type voltage compensator;

FIG. 1C-1 shows a third circuit connection mode (1) of a built-in installation type DC storage type voltage compensator;

FIG. 1C-2 built-in mounting type DC storage type voltage compensator circuit connection mode III (2)

FIG. 1D-1 shows a circuit connection mode IV (1) of a built-in installation type DC storage type voltage compensator;

FIG. 1D-2 shows a circuit connection mode IV (2) of the built-in installation type DC storage type voltage compensator;

FIG. 2A illustrates a first connection mode of a control circuit that is not charged when the DC storage type voltage compensator works;

FIG. 2B shows a second connection mode of the control circuit without charging when the DC storage type voltage compensator works;

FIG. 2C shows a third connection mode of the control circuit without charging when the DC storage type voltage compensator works;

FIG. 2D shows a fourth connection mode of the control circuit without charging when the DC storage type voltage compensator works;

FIG. 2E shows a fifth connection mode of the control circuit without charging when the DC storage type voltage compensator works;

FIG. 2F shows a first connection mode of the external storage battery charging control circuit of the present invention;

FIG. 2G shows a second connection mode of the external storage battery charging control circuit of the present invention;

FIG. 3 is a schematic diagram of a prior art welder circuit;

FIG. 4A illustrates a first circuit connection mode of the welding machine of the present invention;

FIG. 4B shows a second circuit connection mode of the welding machine of the present invention;

FIG. 4C shows a third circuit connection mode of the welding machine of the present invention;

FIG. 4D shows a fourth circuit connection mode of the welding machine of the present invention;

FIG. 4E shows a fifth connection mode of the welding machine circuit of the present invention;

FIG. 5A illustrates a first connection mode of the equivalent voltage compensation circuit of the welding machine of the present invention;

FIG. 5B shows a second connection mode of the equivalent voltage compensation circuit of the welding machine of the present invention;

FIG. 5C shows a third connection mode of the equivalent voltage compensation circuit of the welding machine of the present invention;

FIG. 5D shows a fourth connection mode of the equivalent voltage compensation circuit of the welding machine of the present invention;

FIG. 6 is a schematic diagram of a power supply circuit for a torch head of a prior art welding machine;

FIG. 7A shows a first connection mode of a power circuit of a gun head of the welding machine of the present invention;

FIG. 7B shows a second connection mode of the power circuit of the gun head of the welding machine of the present invention;

FIG. 7C shows a third connection mode of the power circuit of the gun head of the welding machine of the present invention;

FIG. 7D shows a fourth connection mode of the power circuit of the gun head of the welding machine of the present invention;

FIG. 7E shows a fifth connection mode of the power circuit of the gun head of the welding machine of the present invention;

FIG. 7F shows a sixth connection mode of the power circuit of the gun head of the welding machine of the present invention;

FIG. 7G shows a seventh connection mode of the power circuit of the gun head of the welding machine of the present invention;

fig. 8 is a schematic view of the external connection terminal port structure of the utility model.

Detailed Description

The invention is further described below with reference to the following examples and accompanying drawings:

example 1

As shown in fig. 1, the dc storage type voltage compensator includes a charger, a storage battery, an inverter, and a rectifier connected in sequence; the charger is externally connected with a commercial power supply to charge the storage battery, the current output by the storage battery is boosted by the inverter and then rectified into a direct current power supply by the rectifier to be output, and then the direct current power supply is injected into the electric equipment, as shown in figure 1A, the circuit can be directly connected in series into the circuit in the prior art.

The dc storage type voltage compensator includes at least a charger, a storage battery, a diode, and a switching power supply connected in parallel to the charger, the storage battery, the diode, and the switching power supply, as shown in fig. 1B, which are connected in sequence, so as to prevent the impact of reverse current, eliminate an inverter and a rectifier, eliminate a rectifying system of a main circuit, simplify the circuit of the whole machine, but require the storage battery to operate at a relatively high voltage. Or at least comprises a switching power supply and a storage battery which are connected in sequence, as shown in a block diagram 1C-1; or at least comprises a switching power supply and a one-way diode which are connected in sequence, and a storage battery is connected in front of the one-way diode, as shown in a block diagram 1C-2; the diode functions to prevent the impact of reverse current. Or at least comprises a charger and a storage battery which are connected in sequence, as shown in a block diagram 1D-1, the circuit is close to that of a switching power supply in a figure 1C-2, except that the charger outputs a wave form, the charger outputs pulse direct current, the charging of the storage battery is more facilitated, and the later stage needs filtering. Or at least comprises a charger and a one-way diode which are connected in sequence, and a storage battery is connected in front of the one-way diode, as shown in a block diagram 1D-2, and the effect of the diode in the block diagram 1C-2 can prevent the impact of reverse current. In the modes, the direct current output equal to the voltage output of the storage battery is obtained through the switching power supply or the charger, and the stable voltage compensation effect can be achieved.

The voltage compensator can provide an additional power supply for the electric equipment, can reduce the power consumption of the main circuit of the electric equipment, further increases the voltage of the main circuit of the electric equipment, and has the function of stabilizing the voltage.

The storage battery is one of a graphene storage battery, a lead-acid storage battery, a nickel-hydrogen storage battery, a lithium ion battery, a nickel-cadmium battery, a sodium-sulfur storage battery, a nickel-zinc storage battery or a flywheel battery;

the storage battery is connected in series or in parallel singly or in two or more than two; the voltage of the storage battery is 6V, 9V, 12V, 18V, 24V, 36V, 48V, 60V, 72V, 300V or other required voltage volts; the storage battery is provided with a voltmeter.

Further, the inverter is an off-grid square wave inverter, an off-grid sine wave inverter or a grid-connected sine wave inverter;

the rectifier is a bridge rectifier or a bridge rectifier;

the bridge rectifier is a bridge diode; the bridge rectifier is a full-bridge rectifier consisting of four diodes or a half-bridge rectifier consisting of two diodes;

the bridge rectifier diode can be in a pin type, a terminal screw fixed type, a pin foot welding type or a patch type.

The present embodiment sets the storage battery to a built-in mounting type.

When the direct current storage type voltage compensator is used, the rectified direct current output of the direct current storage type voltage compensator is connected in parallel to the electric equipment, and the parallel connection refers to a circuit or an element which is connected in parallel with the direct current output of the rectifier of the electric equipment and enters the electric equipment after the rectifier.

Example 2

As shown in fig. 2A and 2B of the specification, an external access type battery is added to the dc storage type voltage compensator (shown in fig. 1A) of the first structure form in embodiment 1, that is, the battery is installed in the external access type voltage compensator, and an external interface is reserved for the external access type battery.

The circuit connection and control mode can adopt two forms, the first one is electrically connected with the charger and the inverter, as shown in figure 2A. Through the connection in the mode, when the inverter outputs, the inverter sends a signal to the charger, and the charger stops charging; when the inverter has no output, the charger charges, and the circuit has the advantages of simplicity and low cost. On the basis of fig. 1A, a circuit for controlling the charger by the inverter is added, so that the purpose that the charger is not charged when the inverter outputs is achieved, and the external storage battery is connected with the internal storage battery.

The second type can be electrically connected with a charger through a gun head switch as shown in figure 2B. The circuit control principle in the manner of connection through the gun head switch is the same as that in fig. 2B; when the inverter outputs, the gun switch sends a signal to the charger, and the charger stops charging; when the inverter has no output, the charger charges, and the circuit has the advantages of simplicity and low cost.

In addition, as shown in fig. 2C, 2D and 2E, a mode selection switch, a gun head switch and a PLC controller may be further provided to control the operating states of the inverter and the charger, so that charging when the inverter outputs no current and charging when the inverter outputs current can be realized. The mode of setting up mode selection switch and controller, the circuit connection mode has three kinds of modes:

the first one is, as shown in fig. 2C, to connect the mode selection switch and the PLC controller in sequence and to connect the PLC controller to the charger. At this time, the mode selection switch is in the voltage monitoring range: when the inverter outputs, the PLC controller sends a signal to the charger to stop charging when monitoring that the voltage of the alternating current power supply is reduced to a set value; when the inverter has no output, the PLC controller monitors that the voltage of the alternating current power supply is charged when the voltage is higher than a set value, the mode is operated according to the voltage change, and the inverter generally works under the condition that the voltage is more stable and is occasionally used under the condition of low voltage, such as the condition that a high-power motor is started and the like, the low voltage occasionally occurs, so that the times of charging and power failure can be reduced, and the service life of a control element is prolonged.

The second one is, as shown in fig. 2D, sequentially connecting the mode selection switch and the PLC controller, and connecting the PLC controller to the charger and the inverter. The mode selection switch is in the inverter-controlled gear: when the inverter has output, the inverter sends a signal to the PLC controller, the PLC controller sends a signal to the charger, the charger stops charging, and when the inverter has no output, the charger charges. When the PLC monitors that the electric quantity of the storage battery is low to a set value, the output of the inverter is stopped, and the low-voltage protection is in a strong state. The circuit can also set the working voltage constant value of the PLC charger of the controller, reduce unnecessary actions and prolong the service life of the control element.

For the external storage battery, a charger of the external storage battery can be connected with a PLC (programmable logic controller) circuit in the direct current storage type voltage compensator, the charging state of the external storage battery is controlled by the PLC, the charger can be arranged in the direct current storage type voltage compensator or outside the direct current storage type voltage compensator, and the connection modes are shown in a figure 2G (connection mode based on figure 2C) and a figure 2F (connection mode based on figure 2D); for the location of the charger, it may be located inside the compensator, as shown in fig. 2G; the compensator may also be provided externally as shown in fig. 2F.

Third, as shown in fig. 2E, the gun head switch is connected to the PLC controller on the basis of the second. The mode selection switch is arranged at the gun head switch control gear: when the inverter outputs, the gun switch sends a signal to the PLC controller, the PLC controller sends a signal to the charger, the charger stops charging, and when the inverter does not output, the charger charges. When the controller monitors that the electric quantity of the storage battery is low to a set value, the output of the inverter is stopped, and the storage battery enters a low-voltage protection strong state. The circuit can also set the working voltage constant value of the PLC charger of the controller, reduce unnecessary actions and prolong the service life of the control element.

2A-2G, a diode is arranged in series on the external storage battery, and the diode plays a unidirectional role. When the external short circuit of the connecting wire does not affect the internal storage battery and the circuit; meanwhile, the circuit can not be effectively stabilized because the inner storage battery is charged to the outer storage battery when the voltage of the outer storage battery is low, and only the outer storage battery is charged to the inner storage battery.

Example 3

A schematic diagram of a circuit of a welding machine in the prior art is shown in fig. 3, the welding machine comprises a main machine and a gun head part, alternating current is rectified into a control board, a fan and the like in the main machine through inversion rectification in the main machine to provide power, and the control board, the fan and the like also provide power for a heating coil in the gun head, but the welding machine in the prior art has the problems mentioned in the background art.

In order to solve the above problems, in the present embodiment, the dc storage type voltage compensator is disposed in the main machine of the welding machine and connected to the gun switch to realize the control as shown in fig. 4A and 4B of the specification.

As shown in fig. 4A, the connection manner of fig. 2D is adopted; the mode selection switch, the inverter, the PLC and a simplified diagram integrated combined circuit (a time relay or an intermediate relay) for controlling the charger and the prior art are used for achieving the purpose that the charger does not charge when the welding machine works, and the external storage battery is connected with the internal storage battery.

Fig. 4B is similar to fig. 4A in connection manner, in which external and internal connection type connection manner as fig. 1C or fig. 1D is adopted, except that an internal storage battery is not installed, and only an external storage battery is used.

Fig. 4C shows a simplified diagram integrated circuit of the prior art for controlling the charger with the mode selection switch and the inverter and the PLC controller and (time relay or intermediate relay), so as to achieve the purpose that the charger does not charge when the welder works, and a one-way diode is added to eliminate the rectifier of the main circuit and the capacitor filter of the main circuit, and the one-way diode plays a role of preventing the impact of the reverse current. The external storage battery is connected with the internal storage battery.

The voltage compensator is connected in parallel between an alternating current power supply input port and a capacitance filtering element in the welding machine main body, and forms a parallel circuit with a rectifier of the welding machine. And the capacitor filter element provides power for the control panel and the gun head heating coil through the inverter.

The voltage compensator is connected in parallel to the welding machine, the storage battery therein provides electricity for work compensation and voltage stabilization, and the voltage compensator is controlled by the relay and the controller to be not charged during work and charged during standby so as to ensure that the welding machine has a stable power supply during use. The embodiment is as follows: one second to five seconds, and the factory setting is about two seconds. The interval time is equal to or greater than the working time, often greater than the working time.

For the storage battery placement, a battery bin or space can be arranged in the host machine case. The battery compartment or space may be provided at a lower portion within the host or at one or more of an upper portion or a middle portion or a front portion or a rear portion or a left side or a right side within the host.

The battery can be stably placed in the battery compartment or the battery compartment after being filled with foam or the space of the double-sided adhesive tape adhered in the case, or the rope is fixed in the space of the case through a pressing plate by a screw, or the ribbon is fixed in the space of the case, or the adhesive tape is fixed in the space of the case.

In addition, the welder circuit can also adopt a mode of connecting an ultra-undervoltage protector in series (as shown in figure 4D) and a mode of connecting a piezoresistor protector in series (as shown in figure 4E)

Before the AC power supply is connected with the rectifier, an ultra-low voltage protector or a series piezoresistor protector is connected in series, and other connection relations are the same as those in FIG. 4A; both the over-under protector and the piezoresistor protector can protect a welding machine circuit when high voltage is input.

The power supply of the electromagnetic heater is changed after being transplanted from the field of industrial electromagnetic heating, and the characteristics of the field of industrial electromagnetic heating are also reserved in a circuit. Because the environment changes, new requirements are required for the electromagnetic heater, for example, the electromagnetic heater working in the industrial field is fixed, the voltage is very stable, special requirements on the voltage are not needed, only a piezoresistor with the model number of 391 is arranged after a rectifying circuit in the aspect of voltage protection, a simple correction is carried out on the high-voltage wave form of the circuit after rectification, and the effect of voltage protection is not needed. However, the tunnel construction industry is different, the tunnel construction is in a progressive type, a power supply transformer is fixed at a hole, and a power utilization construction surface is in continuous progressive type, so that construction equipment moves forwards along with a working surface, and the power utilization equipment is damaged due to overhigh or unstable voltage caused by various reasons, so that the corresponding voltage protection needs to be carried out on the equipment power utilization equipment.

Example 4

5A-5D, using a DC output that is output by switching the power supply, charger, and/or obtaining an equivalent battery voltage output;

it is noted that the equivalent battery voltage is an operation principle of rectifying alternating current by a switching power supply duty ratio or transforming and rectifying, changing the alternating current into direct current or pulse direct current with the equivalent voltage of the battery, or connecting the battery to the equivalent alternating current voltage (AC220 equivalent to DC305V), and when the voltage is low in operation, the battery is naturally powered, when the battery is in standby, the battery is naturally charged, and the charging and discharging of the battery can also be controlled by assistance. Accessing in the manner of FIG. 1D-1 as in FIG. 5A; FIG. 5B is accessed in the manner of FIG. 1B, and FIG. 5C is accessed in the manner of FIG. 1C-1; FIG. 5D is connected in a 1D-2 mode, and a storage battery is added in front of a one-way diode. The above methods are all flexible access modes, and a proper access mode can be selected according to factors such as power supply voltage conditions, rectification requirements and the like.

Example 5

As shown in fig. 6, a typical welding machine is provided with a cooling fan at the tip of the torch, which is powered from a power board of the main machine. And the utility model provides a welding machine, it is provided with the rifle head lamp at the rifle head, and its power also comes from the welding machine host computer, realizes that control mode can adopt following several kinds of modes:

as shown in fig. 7A, the intermediate relay and the time-delay disconnection relay are connected in sequence behind the main machine power supply board, and the cooling fan and the gun head lamp in the gun head are controlled in parallel. The gun head fan is operated to the delay disconnection relay, the preset delay time is stopped, so that the problem that the gun head lamp is influenced by power failure because the fan keeps running at high speed for a long time once the fan is started can be solved, the unnecessary cooling running time of the fan is shortened, and the gun head lamp can be powered off. The gun head fan control device has the advantages that unnecessary long-time work of the gun head fan is achieved, the high-frequency line and the control line are the same cable, the fan is easily damaged by the high-frequency interference control line of the high-frequency line during work, and the gun head switch is adopted to cut off a power supply during work to avoid interference.

As shown in fig. 7B, a gun head switch is arranged in the gun head, the gun head switch controls the cooling fan and the gun head lamp in parallel, a delay disconnection relay is arranged in front of the cooling fan, and a lamp switch is arranged in front of the gun head lamp. The mode is that the control delay disconnection relay is moved into the gun head, an intermediate relay is omitted, the gun head is directly controlled, and meanwhile, the lighting lamp circuit is moved to the front of the delay disconnection relay, so that the gun head lamp can not be influenced by fan control. The delay disconnection relay (or the automatic fan speed regulator) is moved to the gun head, so that the advantage is that the gun head fan is independently controlled to work for an unnecessary long time, and the gun head has a lamplight power supply when in standby relatively.

As shown in fig. 7C, the intermediate relay and the time-delay disconnection relay are sequentially connected behind the power panel of the host machine, the cooling fan and the gun head lamp are controlled in parallel, and the storage battery and the lamp switch are sequentially arranged in front of the gun head lamp; a storage battery is added in the gun head, and the gun head can be illuminated when the main machine is not powered. Fig. 7C is the same circuit as fig. 7B except that a controlled time delay off relay is installed in the main case, which can reduce the space in the gun.

As shown in fig. 7D, a gun head switch is arranged in the gun head, the gun head switch controls the cooling fan and the gun head lamp in parallel, a delay disconnection relay is arranged in front of the cooling fan, and a storage battery and a lamp switch are arranged in front of the gun head lamp. A storage battery is additionally arranged in the gun head, a control delay disconnection relay is moved into the gun head, an intermediate relay is omitted, the gun head is directly controlled, and meanwhile, a lighting lamp circuit is moved to the front of the delay disconnection relay, so that light cannot be influenced by fan control, the charging time is sufficient, and the defect that more elements are installed in the gun head is overcome. The storage battery is arranged in the gun, the operation of the fan and the light is not limited by the switch of the gun head, the fan does not need to be started frequently, and the service life of the fan can be prolonged.

As shown in fig. 7E, an intermediate relay and a time-delay disconnection relay are connected in sequence behind the main power supply board, the intermediate relay directly passes through the storage battery and the gun head for the lamp switch, and the time-delay disconnection relay is directly connected to the cooling fan. This mode has increased a battery in for the rifle head, and the cable conductor increases a sinle silk, and circuit separation just so can not influence light by fan control, and the charge time is abundant. Fig. 7E is the same as fig. 7D, except that the time delay relay is moved into the main case to reduce the space of the gun head, and the time delay relay can be replaced by an automatic speed regulator of the fan.

Referring to fig. 7F, similar to fig. 7D, except that the cooling fan is directly connected to the fan temperature controller, the amount of air of the cooling fan is controlled.

Fig. 7G is added with a fan thermostat and a corresponding intermediate relay for control on the basis of fig. 7E.

It is possible for those skilled in the art to select a suitable connection method as needed.

Example 6

For a compensator comprising an external storage battery, different interfaces can be set according to the wiring requirements of the external storage battery of the previous figures 2A-2G; the shape of the round can be any one of triangle, rectangle or square; the connection port at least includes jacks connected with the positive electrode and the negative electrode of the built-in storage battery, and optionally includes a PLC access/output jack or an alternating current access/output jack or an external storage battery metal casing PE ground wire jack, as shown in fig. 8, which shows a connection port with various shapes including the above one or more jacks.

The external access type is realized by the method that the positive electrode and the negative electrode of a built-in mounted storage battery are accessed into the external storage battery and a PLC controller leads out a wiring port through a four-pin or five-pin jack to control an electric charging device accessed into the external storage battery; or the external access type means that the positive electrode and the negative electrode of the internally installed storage battery are accessed into the external storage battery and the PLC controller leads out a wiring port through a six-pin or seven-pin jack to control the charger accessed into the external storage battery;

the wiring port is a wire terminal, a safety plug, an aviation plug, a primary-secondary plug, a screw wiring terminal or a plug-in wiring terminal; the wiring port is circular and is triangular, rectangular or square; the wiring port is one or a combination of two or more; the wiring port is a two-pin jack or a three-pin jack or a four-pin jack or a five-pin jack or a six-pin jack; the contact pin is cylindrical or round banana or rectangular or square with grooves.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (9)

1. A direct current storage type voltage compensator is characterized in that: the system at least comprises a charger, a storage battery, an inverter and a rectifier which are connected in sequence; or at least comprises a charger, a storage battery and a one-way diode which are connected in sequence, and a switching power supply which is connected with the charger, the storage battery and the one-way diode in parallel; or at least comprises a switch power supply and a storage battery which are connected in sequence; or at least comprises a charger and a storage battery which are connected in sequence; or at least comprises a switch power supply and a one-way diode which are connected in sequence, and a storage battery is connected in front of the one-way diode; or at least comprises a charger and a one-way diode which are connected in sequence, and the storage battery is connected in front of the one-way diode.

2. A dc storage type voltage compensator according to claim 1, wherein:

the storage battery is one of a graphene storage battery, a lead-acid storage battery, a nickel-hydrogen storage battery, a lithium ion battery, a nickel-cadmium battery, a sodium-sulfur storage battery, a nickel-zinc storage battery or a flywheel battery;

the storage battery is connected in series or in parallel singly or in two or more than two; the voltage of the storage battery is 6V, 9V, 12V, 18V, 24V, 36V, 48V, 60V, 72V or 300V or the required voltage; the voltage of the storage battery is lower than the voltage after rectification of the alternating current, and the storage battery is provided with a voltmeter.

3. A dc storage type voltage compensator according to claim 1, wherein: the inverter is an off-grid square wave inverter, an off-grid sine wave inverter or a grid-connected sine wave inverter;

the rectifier is a bridge rectifier or a bridge rectifier;

the bridge rectifier is a bridge diode; the bridge rectifier is a full-bridge rectifier consisting of four diodes or a half-bridge rectifier consisting of two diodes;

the bridge rectifier diode is in a pin type, a terminal screw fixed type, a pin welding type or a patch type;

the switch power supply is a power supply switch power supply or a rectification element or a rectifier after voltage reduction of a transformer in the prior art.

4. A dc storage type voltage compensator according to claim 1, wherein: the storage battery is internally installed or externally accessed; the external access type is that the positive electrode and the negative electrode of a storage battery which is internally installed are led out of a wiring port through two-pin or three-pin jacks and are accessed to the external storage battery; or the external access type means that the positive electrode and the negative electrode of the internally installed storage battery are accessed into the external storage battery and the PLC controller leads out a wiring port through a four-pin jack or a five-pin jack to control the charger accessed into the external storage battery; or the external access type means that the positive electrode and the negative electrode of the internally installed storage battery are accessed into the external storage battery and the PLC controller leads out a wiring port through a six-pin or seven-pin jack to control the charger accessed into the external storage battery;

the wiring port is a wire terminal, a safety plug, an aviation plug, a primary-secondary plug, a screw wiring terminal or a plug-in wiring terminal; the wiring port is circular and is triangular, rectangular or square; the wiring port is one or a combination of two or more; the wiring port is a two-pin jack or a three-pin jack or a four-pin jack or a five-pin jack or a six-pin jack; the insertion holes are cylindrical or circular banana plugs with grooves, rectangular columns with grooves or square columns with grooves.

5. A dc storage type voltage compensator according to claim 1, wherein: the direct current storage type voltage compensator is of a built-in or external access type or one of a built-in and external access type together; the direct current storage type voltage compensator is a combination of one, two or more than one;

and connecting the direct current output of the direct current storage type voltage compensator into the electric equipment in parallel, wherein the parallel connection refers to a circuit or an element which is connected with the direct current output of the rectifier of the electric equipment in parallel and enters the electric equipment after the rectifier.

6. A welding machine provided with a DC storage type voltage compensator according to any one of claims 1 to 5, characterized in that: and the direct current storage type voltage compensator is connected in parallel with the anode and the cathode of a filter capacitor behind a rectifier in a welding machine main machine to form a parallel circuit with a rectifier of a welding gun, and the welding machine is an electromagnetic welding machine, a creeping welding machine, a waterstop welding machine, a butt welding machine, an argon protection welding machine, a direct current welding machine or a variable frequency welding machine.

7. The welding machine of claim 6, wherein: and a gun head switch of the welding machine is electrically connected with a controller or a charger in the direct current storage type voltage compensator.

8. The welding machine of claim 7, wherein: the working states of an inverter of the direct current storage type voltage compensator and a charger are directly controlled by a gun head switch; or the gun head switch controls the intermediate relay, or the gun head switch controls the intermediate relay and the time relay, and further the working states of the inverter of the direct current storage type voltage compensator and the charger are controlled through the intermediate relay or the time relay; or the mode selection switch and the PLC controller, and the intermediate relay or the time relay control the PLC controller to control the working states of the inverter and the charger of the direct current storage type voltage compensator; the working state is that the welding machine or the inverter is not charged when output exists and is charged when standby;

the welding machine is also provided with an ultra-undervoltage protector synchronous self-checking or input channeling piezoresistor group;

when the synchronous self-check is starting, the mode switch is used for simultaneously turning on the ultra-undervoltage protector to delay power-on and synchronously start the power supply of the magnetic welding gun so as to synchronously finish or finish in sequence; when the voltage is too high or too low, the overvoltage and undervoltage protector turns off the input power and does not influence the work of the welding machine, and when the overvoltage and undervoltage protector enters the time delay electrification for about two seconds again, the work of the welding machine is not influenced;

the input channeling piezoresistor is a piezoresistor group or a piezoresistor circuit board; the piezoresistor group or the piezoresistor circuit board is specifically input with two or more piezoresistors in parallel;

the mode selection switch is a rotary type selection switch or a push-button type or a rocker type or PLC interface type touch screen button selection switch; the PLC and the touch screen are integrated machines or split machines.

9. The welding machine of claim 6, wherein: the main machine part of the welding machine is provided with an illumination light source, and/or the gun head part is provided with an illumination light source;

the lighting light source is one or more of an LED light source, a tungsten filament bulb light source, a tungsten light source, a xenon light source, a fluorescent light source or a neon light source;

the LED light source is one or more of an LED plastic package flat lamp, an LED metal shell spotlight, an LED plastic shell spotlight or an LED spotlight;

the LED light source is one or more of white, warm white or warm color;

the light source switch control mode of the main machine and the gun head is as follows: the LED light source is controlled by one of a self-reset switch, a dimming switch which is normally on after the switch is turned on, an LED light source which is controlled by a self-reset switch, and is turned off after the self-reset switch is released, or a dimming switch which is used for adjusting the intensity of the light source;

the lighting source that rifle head part set up is the rifle head lamp, and rifle head lamp connected mode does: the power panel of the main machine is sequentially connected with an intermediate relay and a time delay disconnection relay, and a cooling fan and a gun head lamp in the gun head are controlled in parallel; or a gun head switch is arranged in the gun head and is connected in parallel to control the cooling fan and the gun head lamp, a time delay disconnection relay is arranged in front of the cooling fan, and a lamp switch is arranged in front of the gun head lamp; or the intermediate relay and the time delay disconnection relay are sequentially connected behind the main machine power supply board, the cooling fan and the gun head lamp are controlled in parallel, and the storage battery and the lamp switch are sequentially arranged in front of the gun head lamp; or a gun head switch is arranged in the gun head and is connected in parallel to control the cooling fan and the gun head lamp, a delay disconnection relay is arranged in front of the cooling fan, and a storage battery and a lamp switch are arranged in front of the gun head lamp; or an intermediate relay and a delay disconnection relay are sequentially connected behind the main machine power supply board, the intermediate relay is directly connected with a gun head and the like through a storage battery and a lamp switch, and the delay disconnection relay is directly connected with a cooling fan; or an intermediate relay and a fan temperature control regulator are sequentially connected behind the main machine power supply board, the intermediate relay is directly connected with the gunpoint lamp through the storage battery and the lamp switch, and the fan temperature control regulator is directly connected with the cooling fan; the sensor of the fan temperature control regulator can be mounted on the heating coil through heat-conducting silicone grease, or the sensor of the fan temperature control regulator can be mounted on the heating coil wiring terminal through heat-conducting silicone grease.

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