CN2218623Y - Energy saving box for electric welder - Google Patents

Abstract

The utility model belongs to an energy saving box for an electric welding machine, mainly composed of a wiring system of a main loop, a capacity discharge system, a current tracking system and a power supply starting system. An electric welding machine can be operated with energy saving without an external power supply, only when the power cord and the terminal wire of the electric welding machine are led into the box. The structure of the utility model is simple and is easy match with various electric welding machines for use to reach the goal of the energy-saving operation of electric welding machines.

Description

The electric welding machine Energy-saving box

The utility model belongs to the electric welding machine energy-saving appliance.

At present, the electric welding machine energy saver of use though energy-saving effect is also arranged, exists many shortcomings, and one time no-load current is bigger; Easy burn-back tentaculum contact; Bad adaptability is along with the very difficult operate as normal of the electric welding machine of voltage pulsation and different model.

The purpose of this utility model is to have adopted new power initiation system and capacitive discharge system, the problems referred to above have been solved, reached and the direct cooperating of the electric welding machine of various models, be not subjected to the influence of network voltage fluctuation, purpose of energy saving when having realized the electric welding machine underloading.

The utility model is made up of major loop wiring system, capacitive discharge system, current tracking system, power initiation system.Primary heat transport system is with the power line L of electric welding machine ₁, L ₂Reach end line V, W, B ₁, B ₂Introduce the electric welding machine Energy-saving box, do not need external power supply again, cooperate simple with electric welding machine.The current tracking system is arranged on sampled current transformer TA a winding side of electric welding machine.Capacitive discharge system after the auxiliary normally-closed contact of discharge indicator lamp HL and A.C. contactor KM is in parallel, is serially connected with the capacitor C loop.The power initiation system is made up of the normally-closed contact of control transformer TC, potentiometer RP, power initiation relay ZJ, contactor KM.

The utility model electric welding machine Energy-saving box, simple in structure, be easy to be used with the electric welding machine of each model, the electric welder no-load electric current is descended about 20 times.

Be the utility model description of drawings below

Fig. 1 is primary heat transport system, capacitive discharge system, current tracking system wiring figure

Fig. 2 is power initiation system wiring figure

Below in conjunction with accompanying drawing, most preferred embodiment of the present utility model is described: the electric welding machine Energy-saving box is made up of primary heat transport system, capacitive discharge system, current tracking system wiring Fig. 1 and power initiation system diagram 2.Primary heat transport system is with the power line L of electric welding machine ₁, L ₂Reach end line V, W, B ₁, B ₂Directly introduce the electric welding machine Energy-saving box, do not need external power supply again, be easy to be used with the electric welding machine of each model, the current transformer TA of current tracking system is arranged on a winding side of electric welding machine.Capacitive discharge system is with the auxiliary normally-closed contact KM of discharge indicator lamp HL and A.C. contactor ₂After being in parallel, be serially connected with the capacitor C loop.Power initiation system diagram 2 is by the normally-closed contact KM of control transformer TC, potentiometer RP, power initiation relay coil ZJ, contactor ₃Form.Control transformer TC primary side in the power initiation system is connected to L through fuse 1FU and 2FU ₁And L ₂End.After former control section closes a floodgate, L ₁And L ₂Promptly have voltage to exist, at this moment as shown in Figure 1, a winding of electric welding machine is through the auxiliary normally-closed contact KM of capacitor C, discharge indicator lamp HL and contactor ₂With L ₁And L ₂Connect.Because the capacitive reactance of capacitor C is much larger than the impedance of electric welding machine, so obtain a very little voltage U at winding two ends of electric welding machine ₁, it is much smaller than supply voltage U _ABSo, in Secondary Winding, just obtain a small secondary voltage U ₂As seen from Figure 2, winding of control transformer TC is received L ₁And L ₂Two ends after former control section closes a floodgate, just obtain power source voltage U in the winding _AB, in Secondary Winding, obtain a given voltage U ₃, this voltage U ₃Required voltage when satisfying power initiation relay coil ZJ adhesive.End B of the same name with the Secondary Winding of the Secondary Winding of electric welding machine and control transformer ₂With B ₄Be connected together, in addition with B ₁With B ₅Be connected together, so B ₁, B ₃The voltage of point-to-point transmission is electric welding machine Secondary Winding voltage U ₂With control transformer Secondary Winding voltage U ₃Difference.At U _B1B3Load circuit in, by the auxiliary normally-closed contact KM of potentiometer RP, power initiation relay coil ZJ, contactor ₃Constitute the loop.At resultant voltage U _B1B3Effect under, the voltage that power initiation relay coil ZJ obtains can not make its adhesive, make 1,5 point-to-point transmissions be in off-state, time relay coil KT can not adhesive, make 1,3 point-to-point transmissions be in off-state, contactor coil KM can not adhesive, so the time electric welding machine a winding can only be by capacitor C and power connection, and by a minimum electric current, at this moment the duty of electric welding machine is the energy conservation state.In the time will welding,, can make contactor connection work as long as soldering turret HP and ground wire DX are bumped with electric welding machine.Its process is as follows: when soldering turret HP and ground wire DX bump, and B as seen from Figure 1 ₁And B ₂2 just short circuit, at this moment the secondary voltage U of electric welding machine ₂Level off to zero immediately, in conjunction with Fig. 2 as seen, B ₁And B ₃The point-to-point transmission voltage U _B1B3To raise, and level off to U ₃, make power initiation relay coil ZJ both end voltage reach pick-up voltage and adhesive.After the power initiation relay ZJ adhesive, its normal opened contact ZJ ₁Closure makes 1,5 two connections, thereby makes time relay coil KT energising and adhesive, its time-delay normally opened contact KT ₁With 1,3 two connections, make contactor coil KM energising and adhesive.The main normally opened contact KM of contactor ₁Closure makes the voltage U of a winding of electric welding machine ₁With supply voltage U _ABEquate that electric welding machine promptly reaches normal unloaded operation state, at this moment the operating current of the no-load current of electric welding machine under the power save mode.In capacitive discharge system, the auxiliary normally-closed contact KM of contactor ₂Disconnect earlier, at this moment capacitor C will be by the main normally opened contact KM of discharge indicator lamp HL to contactor ₁Excessive discharge current scaling loss main contact is avoided in discharge.Main normally-closed contact KM when contactor ₁When closed, in power initiation system diagram 2, the auxiliary normally-closed contact KM of another of contactor ₃Also disconnect earlier, make the secondary circuit of control transformer TC and the secondary circuit of electric welding machine TM disconnect, avoid the normal working voltage of electric welding machine to burn relay coil ZJ and control transformer TC Secondary Winding, because of the normal working voltage of electric welding machine rated voltage far above relay coil ZJ and control transformer TC Secondary Winding.Simultaneously, the relay ZJ in the power initiation system, also because of decompression breaks away from attracting state, its normally opened contact ZJ ₁Make be off-state at 1,5 two, the time relay breaks away from attracting state, and this moment, contactor kept attracting state by the time-delay normal opened contact of the time relay.Main normal opened contact KM when contactor ₁After the connection, as the break period of untimely welding or welding when longer, the electric current relay FA of current tracking system is not adhesive, its normal opened contact FA ₁Be off-state at 1,5 two, so time relay KT still is in the disengaging attracting state, its time-delay normally opened contact disconnects after certain time-delay, and contactor KM is owing to break away from its main normally opened contact KM of attracting state ₁To disconnect, and make electric welding machine get back to the energy conservation state again.Main normal opened contact KM when contactor ₁After the connection, if in time weld, the winding of electric welding machine TM will have a welding job electric current to pass through, and this electric current makes the current relay coil FA adhesive in the current tracking system, its normally opened contact FA ₁With 1,5 two connections, make time relay KT enter attracting state again, thereby make contactor KM also continue to keep attracting state, electric welding machine remains on normal operating conditions.When the short time does not weld, because the time-delay normally opened contact KT of the time relay ₁Still locate closure state, make contactor coil KM still keep attracting state, thereby make its main contacts KM ₁Connect, when promptly electric welding machine did not weld in the short time, can still remain on normal operating conditions.This Energy-saving box is provided with the purpose of gauge tap KK, is when current tracking system and power initiation system break down, and can make directly connect at 1,3 two gauge tap KK closure, thereby can make the electric welding machine operate as normal and be unlikely to influence and produce.

Claims (4)

1. electric welding machine Energy-saving box is characterized in that: the electric welding machine Energy-saving box is formed from primary heat transport system, capacitive discharge system, current tracking system, power initiation system, and primary heat transport system is the power line L with electric welding machine ₁, L ₂Reach end line V, W, B ₁, B ₂Introduce the electric welding machine Energy-saving box, do not need external power supply, directly cooperate with electric welding machine.

2. electric welding machine Energy-saving box according to claim 1, its feature also is: the current transformer TA of current tracking system is arranged on a winding side of electric welding machine.

3. electric welding machine Energy-saving box according to claim 1, its feature also is: capacitive discharge system, with the auxiliary normally-closed contact KM of discharge indicator lamp HL and A.C. contactor ₂After being in parallel, be serially connected with the capacitor C loop.

4. electric welding machine Energy-saving box according to claim 1, its feature also is: the power initiation system, by the normally-closed contact KM of control transformer TC, potentiometer RP, power initiation relay ZJ and contactor ₃Form.

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