CN202804451U

CN202804451U - Energy-saving device for AC (Alternate Current) electric welding machine

Info

Publication number: CN202804451U
Application number: CN 201220472586
Authority: CN
Inventors: 阮永根
Original assignee: Zhejiang Shendian Mechanical & Equipment Co Ltd
Current assignee: Zhejiang Shendian Mechanical & Equipment Co Ltd
Priority date: 2012-09-17
Filing date: 2012-09-17
Publication date: 2013-03-20
Anticipated expiration: 2022-09-17

Abstract

The utility model belongs to the technical field of electric welding machines, particularly an energy-saving device for an AC (Alternate Current) electric welding machine. The energy-saving device comprises a power supply access module; the power supply access module is respectively connected with a main contact circuit and a second rectifying and voltage stabilizing module; the main contact circuit is connected with a first rectifying and voltage stabilizing module by a reed switch; a power-on signal is obtained by the reed switch and the main contact circuit is controlled by the power-on signal; the second rectifying and voltage stabilizing module is connected with the reed switch by a time delay circuit; the main contact circuit is provided with an AC contactor normally-open contact; both ends of the AC contactor normally-open contact are connected in parallel with a capacitor C1; the main contact circuit is connected in series with the reed switch by a transformer T1; and by utilizing the resetting and setting characteristics of a singlechip control system in the time delay circuit, power-on and power-off control of a relay is carried out for setting delay time, controlling to switch off the main contact circuit and carry outing no-load power-off energy saving. Energy-saving measures capable of effectively reducing no-load loss, which is disclosed by the utility model, have an obvious power-saving effect; and meanwhile, the service life of the welding machine is prolonged.

Description

A kind of energy saver of A.C. welder

Technical field

The utility model belongs to the electric welding machine technical field, refers in particular to a kind of energy saver of universal A.C. welder.

Background technology

In electric welding work, from welding one weld seam to lower one weld seam of welding, often to do a little back works, electric welding machine at this moment is in no-load running, namely still has no-load current in the electric welder transformer armature winding; In actual the use, electric welding machine is intermittently used, and the no-load power consumption in the intermittent phase reaches several hectowatts; Ceaselessly artificial open and close machine obviously can affect operating efficiency for power saving; The idle time of most of manual welders, the unloaded power consumption of the welding machine that general arcing time factor is low may be total consume energy over half more than the working time.Through measuring and calculating, a single phase ac electric welding machine, unloaded active loss accounts for 1～2.5% of installed capacity, and unloaded reactive loss accounts for 10% of installed capacity, and power only has 10%～30% because of rope when unloaded, not only consumes energy, and also affects the quality of generating, power transformation and electric power system.And a large amount of electric welding machines operation is manual welding, and mostly works in the more abominable situation of environment, and its floating voltage is at 50～70V, have up to 90V, be higher than the safe voltage of 36V, exist the hidden danger that jeopardizes personal safety; Even can cause personal electric shock casualty accident.

Summary of the invention

The purpose of this utility model is to provide a kind of can save a large amount of electric energy, the energy saver of the universal A.C. welder of the use cost of reduction welding machine.

For achieving the above object, the utility model provides following technical scheme: a kind of energy saver of A.C. welder, comprise power supply AM access module, power supply AM access module respectively with main contact circuit be connected the rectifying and voltage-stabilizing module and be connected, main contact circuit connects the first rectifying and voltage-stabilizing module by tongue tube, is obtained starting-up signal and is controlled main contact circuit with starting-up signal by tongue tube; Described the second rectifying and voltage-stabilizing module connects tongue tube by delay circuit; Main contact circuit is provided with the A.C. contactor normally opened contact, and described A.C. contactor normally opened contact two ends are parallel with capacitor C 1, and described main contact circuit is through transformer T1 series connection tongue tube; Utilize the resetting of single-chip computer control system in the delay circuit, switching electric control that the set characteristic is carried out relay, be used for setting delay time, control main contact circuit and disconnect power-off energy saving when carrying out zero load.

Described delay circuit comprises single-chip computer control system, described single-chip computer control system auxiliary connection relay coil.

The utility model beneficial effect compared to existing technology is: the utility model can effectively reduce the power-saving measures of open circuit loss, and power savings is remarkable.Tongue tube is be used to obtaining starting-up signal, control main contact circuit with starting-up signal, automatic plugged when making main contact circuit realize welding, and tongue tube stable performance, simple in structure, low price, thus reduced the cost of this product; Utilize the resetting of single-chip computer control system in the delay circuit, switching electric control that the set characteristic is carried out relay, also can be used to set delay time, controlling main contact circuit disconnects, power-off energy saving when reaching zero load, thus the personal safety of welding worker ensured, also improved the power factor of welding machine simultaneously, improved the quality of voltage of electric power system, reduce user's reactive loss, reduced the electric welding machine coil heating, the service life of having improved welding machine.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, a kind of energy saver of A.C. welder, comprise power supply AM access module 1, power supply AM access module 1 respectively with main contact circuit 2 be connected the rectifying and voltage-stabilizing module and be connected, main contact circuit 2 connects the first rectifying and voltage-stabilizing module 7 by tongue tube 6, is obtained starting-up signal and is controlled main contact circuit 2 with starting-up signal by tongue tube 6; Described the second rectifying and voltage-stabilizing module 8 connects tongue tube 6 by delay circuit 9; Main contact circuit 2 is provided with A.C. contactor normally opened contact 3(model KM02), it is 4 that described A.C. contactor normally opened contact 3 two ends are parallel with capacitor C 1(number in the figure), described main contact circuit 2 is through transformer 5 series connection tongue tubes 6; Utilize the resetting of single-chip computer control system 10 in the delay circuit 9, switching electric control that the set characteristic is carried out relay, be used for setting delay time, control main contact circuit 2 and disconnect power-off energy saving when carrying out zero load.

Described delay circuit 9 comprises single-chip computer control system 10, described single-chip computer control system 10 auxiliary connection relay coils (model K22).

Described the second rectifying and voltage-stabilizing module 8 comprises 12v voltage-stablizer 7812 and rectifier, and described 12V voltage-stablizer 7812 connects rectifier and realizes the voltage stabilizing rectification, described rectifier connection transformer T2.

Described delay circuit 9 comprises single-chip computer control system 10, described single-chip computer control system 10 auxiliary connection relay coils (model K22); Single-chip microcomputer model in the single-chip computer control system 10 is PIC12F508.

Among the figure, A is welding rod, and B is workpiece.

Operation principle of the present utility model: in electric welder transformer T1 and outlet line that workpiece is connected, be connected to described tongue tube, be used for obtaining starting-up signal, control main contact circuit with starting-up signal, automatic plugged when making main contact circuit realize welding.Make the gauge tap that welding machine electric power switches on and off with main contact circuit 2, a main contact circuit normally opened contact KMO2 place capacitor C 1 in parallel, the power turn-on switch, control transformer T1 connects electricity, incoming transport electricity when being used for zero load; When stopping to weld, disconnected power-off energy saving when reaching zero load, the purpose of guarantee electric welder person safety by the main contact circuit of control behind the delay time of delay circuit through setting.

Connect with secondary relay coil KMO1 after normally-closed contact KM-2 and the normally opened contact K21 parallel connection, connect with aforesaid secondary relay coil KMO1 again after normally-closed contact K11 and the normally opened contact KM-1 parallel connection, secondary relay coil KM01 often to open electric shock KM02 in parallel with capacitor C 1.

The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims

1. the energy saver of an A.C. welder, it is characterized in that: comprise power supply AM access module, power supply AM access module respectively with main contact circuit be connected the rectifying and voltage-stabilizing module and be connected, main contact circuit connects the first rectifying and voltage-stabilizing module by tongue tube, and described the second rectifying and voltage-stabilizing module connects tongue tube by delay circuit.

2. the energy saver of a kind of A.C. welder according to claim 1, it is characterized in that: described main contact circuit is provided with the A.C. contactor normally opened contact, described A.C. contactor normally opened contact two ends are parallel with electric capacity, and described main contact circuit is through the transformer tongue tube of connecting; Utilize the resetting of single-chip computer control system in the delay circuit, switching electric control that the set characteristic is carried out relay, be used for setting delay time, control main contact circuit and disconnect power-off energy saving when carrying out zero load.

3. the energy saver of a kind of A.C. welder according to claim 2, it is characterized in that: described delay circuit comprises single-chip computer control system, described single-chip computer control system auxiliary connection relay coil.