CN202428100U

CN202428100U - Energy-saving circuit for electric welding machine

Info

Publication number: CN202428100U
Application number: CN201220027206XU
Authority: CN
Inventors: 左敬民
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-20
Filing date: 2012-01-20
Publication date: 2012-09-12
Anticipated expiration: 2022-01-20

Abstract

The utility model discloses an energy-saving circuit for an electric welding machine. An output end of a rectifying and filtering circuit is connected with a base electrode of a triode T1; an emitter electrode of the T1 is grounded respectively through a capacitor C2 and a resistor R4; a pin 1 of an NAND gate F1 and a pin 5 of a NAND gate F2 are connected with a collector electrode of the triode T1 respectively through a resistor R3; a pin 2 of the NAND gate F1 is connected with the emitter electrode of the triode T1; a pin 3 of the NAND gate F1 is connected with a negative electrode of a diode D1; a positive electrode of the diode D1 is respectively connected with a pin 6 of the NAND gate F2, a resistor R5 and a capacitor C3; the other end of the resistor R5 is connected with the collector electrode of the triode T1 through the resistor R3; the other end of the capacitor C3 is grounded; a pin 4 of the NAND gate F1 is connected with a base electrode of a triode T2 through a resistor R6; an emitter electrode of the triode T2 is grounded; the collector electrode of the triode T2 is respectively connected with a positive electrode of the diode D2 and a coil of a relay K1'; a negative electrode of the diode D2 and the other end of the coil of the relay K1' are respectively connected with a collector electrode of the triode T1 respectively through the resistor R3; and a switch of the relay K1' is connected with a time relay J for controlling on/off of the electric welding machine. With the adoption of the energy-saving circuit for the electric welding machine, no-load power saving is guaranteed, and the phenomenon that the electric welding machine leaks the electricity in case of wet weather can be prevented.

Description

The energy-saving circuit that is used for electric welding machine

Technical field

The utility model relates to a kind of energy saver.Particularly relate to a kind of can be energy-conservation and don't influence the energy-saving circuit that is used for electric welding machine of welding quality.

Background technology

The electric welder no-load power consumption is generally 2～3KW, in most cases, during the shipyard weld job, especially shiprepair welding, the weld job time is very short, electric welding field point aboard ship, welding machine is then on the harbour on ship limit.Operate a switch or come off duty as if forgetting, descend ship time to operate a switch again, certainly will cause very big waste of energy.In addition the welding machine quantity of shipyard is a lot, repaiies, needs the position of local a small amount of welding a lot of during shipbuilding, and idle time is longer relatively, and unloaded power consumption is very big.Thereby, can reach the purpose of cost efficiency to electric welding machine implementation administration of energy conservation.

Various on the market electric welding machine energy conserving systems are a lot of, and majority is that the conversion between the high low-voltage reaches energy-conservation purpose when leaning on work and not working, but how much can have influence on the quality of welding during high low voltage transition.

Summary of the invention

The utility model technical problem to be solved is, provide a kind of can be energy-conservation and don't influence welding quality, can also prevent the energy-saving circuit that is used for electric welding machine that unloaded electric welding machine electric leakage is hurted sb.'s feelings simultaneously.

The technical scheme that the utility model adopted is: a kind of energy-saving circuit that is used for electric welding machine; Be provided with current rectifying and wave filtering circuit; Also include triode T1 and triode T2, NAND gate F1 and NAND gate F2 and relay K 1 ', wherein, the output of described current rectifying and wave filtering circuit connects the base stage of triode T1; The emitter stage of triode T1 is respectively through capacitor C 2 and resistance R 4 ground connection; 1 pin of described NAND gate F1 and 5 pin of NAND gate F2 are connected the colelctor electrode of triode T1 respectively through resistance R 3,2 pin of described NAND gate F1 connect the emitter stage of triode T1, and 3 pin of described NAND gate F1 connect the negative pole of diode D1; The positive pole of diode D1 connects 6 pin, resistance R 5 and the capacitor C 3 of NAND gate F2 respectively; The other end of resistance R 5 passes through the colelctor electrode that resistance R 3 connects triode T1, the other end ground connection of

capacitor C

3, and 4 pin of NAND gate F1 connect the base stage of triode T2 through resistance R 6; The grounded emitter of triode T2; The current collection collection connect respectively positive pole and the relay K 1 of diode D2 ' coil, the other end of the negative pole of said diode D2 and relay K 1 ' coil is connected the colelctor electrode of triode T1 respectively through resistance R 3, relay K 1 ' switch connect the time relay J that is used to control the electric welding machine switch.

Described current rectifying and wave filtering circuit includes bridge rectifier S; The input of described bridge rectifier S connects the current transformer C that is used to obtain the electric welding machine working signal; Output connects an end of capacitor C 1, resistance R 2 respectively through resistance R 1; Constitute the output of said current rectifying and wave filtering circuit simultaneously, the other end ground connection of said capacitor C 1 and resistance R 2.

The energy-saving circuit that is used for electric welding machine of the utility model; Simple in structure, the time relay delay time of driving can freely be provided with in 1h, whenever receives welding signal during welding; Restart timing; Surpassed the setting-up time electric welding machine and do not worked, the normally opened contact of the time relay is promptly closed, drives the earth leakage protective device outage.Both guaranteed unloaded economize on electricity, prevented wet weather again just in case the electric welding machine electric leakage injures the person.

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing the energy-saving circuit that is used for electric welding machine of the utility model is made detailed description.

For energy-conservation and don't influence welding quality, can also prevent that unloaded electric welding machine electric leakage from hurting sb.'s feelings simultaneously, therefore, the utility model has designed the energy saver of delay cut-off formula for electric welding machine.The energy-saving circuit that is used for electric welding machine of the utility model is not that to lean on electric welding machine work and idle high low voltage transition to realize energy-conservation, the affected problem of welding quality when having solved high low voltage transition.The time relay delay time that the utility model drives can freely be provided with in 1h, whenever receives welding signal during welding, restarts timing, has surpassed the setting-up time electric welding machine and has not worked, and the normally opened contact of the time relay is promptly closed, drives the earth leakage protective device outage.Both guaranteed unloaded economize on electricity, prevented wet weather again just in case the electric welding machine electric leakage injures the person.

As shown in Figure 1; The energy-saving circuit that is used for electric welding machine of the utility model is provided with current rectifying and wave filtering circuit, and described current rectifying and wave filtering circuit includes bridge rectifier S; The input of described bridge rectifier S connects the current transformer C that is used to obtain the electric welding machine working signal; Output connects an end of capacitor C 1, resistance R 2 respectively through resistance R 1, constitutes the output of said current rectifying and wave filtering circuit simultaneously, the other end ground connection of said capacitor C 1 and resistance R 2.Current transformer C is enclosed within the output of electric welding machine, is used for getting the welding machine working signal.

Also include triode T1 and triode T2, NAND gate F1 and NAND gate F2 and relay K 1 '; Wherein, The output of described current rectifying and wave filtering circuit connects the base stage of triode T1, and the emitter stage of triode T1 is respectively through capacitor C 2 and resistance R 4 ground connection, and 1 pin of described NAND gate F1 and 5 pin of NAND gate F2 are connected the colelctor electrode of triode T1 respectively through resistance R 3; 2 pin of described NAND gate F1 connect the emitter stage of triode T1; 3 pin of described NAND gate F1 connect the negative pole of diode D1, and the positive pole of diode D1 connects 6 pin, resistance R 5 and the capacitor C 3 of NAND gate F2 respectively, and the other end of resistance R 5 connects the colelctor electrode of triode T1 through resistance R 3; The other end ground connection of capacitor C 3; 4 pin of NAND gate F1 connect the base stage of triode T2 through resistance R 6, the grounded emitter of triode T2, the current collection collection connect respectively positive pole and the relay K 1 of diode D2 ' coil; The other end of the negative pole of said diode D2 and relay K 1 ' coil is connected the colelctor electrode of triode T1 respectively through resistance R 3, relay K 1 ' switch connect the time relay J be used to control the electric welding machine switch.

The energy-saving circuit that is used for electric welding machine of the utility model is the energy-conservation delay circuit that adopts 2 input NAND gate digital integrated electronic circuits to make.

Among Fig. 1,1 pin of NAND gate F1 and 5 pin of NAND gate F2 are high level " 1 " at ordinary times, are door opening state, and another input of NAND gate F2 promptly 6 pin since when stable state capacitor C 3 charged, so also be high level " 1 ".Therefore NAND gate F2 output 4 pin are low level " 0 " state, and triode T2 ends, relay K 1 ' be failure to actuate; When welding, the induced-current of current transformer C charges to capacitor C 1 through resistance R 1 behind bridge rectifier; After triode T1 amplifies, make not gate F1 input 2 pin become the high level one state by original low level again, output becomes low level " 0 " state; Diode D1 conducting, capacitor C 3 are just through diode D1 discharge.So another input 6 pin of not gate F2 also become low level " 0 " state, output 4 pin just become the high level one state, and this high level makes triode T2 conducting through resistance R 6; Relay K 1 ' electronic work, relay K 1 ' normally closed movable contact open, cut off the power supply of time-delay relay; After welding stopped, NAND gate F1 output became high level " 1 " again, and diode D1 ends; Capacitor C 3 is again through resistance R 5 chargings, approximately through 30～50S time (charge constant that is decided by resistance R 5 and capacitor C 3), when capacitor C 3 level rising arrive certain value; NAND gate F2 is output low level " 0 " again; Triode T2 ends, relay K 1 ' normally-closed contact closed, time-delay relay must be replied the position by cable and restarted timing.

Being nested in the additional delay of the about 30～50S time in the time relay long delay, is the action frequency that reduces relay K and time relay for the starting the arc stage in frequent welding, increases the life-span.

Claims

1. energy-saving circuit that is used for electric welding machine; Be provided with current rectifying and wave filtering circuit, it is characterized in that, also include triode T1 and triode T2, NAND gate F1 and NAND gate F2 and relay K 1 '; Wherein, The output of described current rectifying and wave filtering circuit connects the base stage of triode T1, and the emitter stage of triode T1 is respectively through capacitor C 2 and resistance R 4 ground connection, and 1 pin of described NAND gate F1 and 5 pin of NAND gate F2 are connected the colelctor electrode of triode T1 respectively through resistance R 3; 2 pin of described NAND gate F1 connect the emitter stage of triode T1; 3 pin of described NAND gate F1 connect the negative pole of diode D1, and the positive pole of diode D1 connects 6 pin, resistance R 5 and the capacitor C 3 of NAND gate F2 respectively, and the other end of resistance R 5 connects the colelctor electrode of triode T1 through resistance R 3; The other end ground connection of capacitor C 3; 4 pin of NAND gate F1 connect the base stage of triode T2 through resistance R 6, the grounded emitter of triode T2, the current collection collection connect respectively positive pole and the relay K 1 of diode D2 ' coil; The other end of the negative pole of said diode D2 and relay K 1 ' coil is connected the colelctor electrode of triode T1 respectively through resistance R 3, relay K 1 ' switch connect the time relay J be used to control the electric welding machine switch.

2. the energy-saving circuit that is used for electric welding machine according to claim 1; It is characterized in that; Described current rectifying and wave filtering circuit includes bridge rectifier S, and the input of described bridge rectifier S connects the current transformer C that is used to obtain the electric welding machine working signal, and output connects an end of capacitor C 1, resistance R 2 respectively through resistance R 1; Constitute the output of said current rectifying and wave filtering circuit simultaneously, the other end ground connection of said capacitor C 1 and resistance R 2.