CN102931544B

CN102931544B - Power source protection socket for multifunctional electric welding machine

Info

Publication number: CN102931544B
Application number: CN201210502519.0A
Authority: CN
Inventors: 杨振文; 吴月涛
Original assignee: Shenzhen Huayilong Industrial Development Co Ltd
Current assignee: Shenzhen Huayilong Industrial Development Co Ltd
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2015-04-29
Anticipated expiration: 2032-11-30
Also published as: CN102931544A

Abstract

The invention discloses a power source protection socket for a multifunctional electric welding machine. The power source protection socket comprises an input plug, an input lead wire connected with the input plug, and a socket bracket connected with the input lead wire, and further comprises an input wiring box arranged at the front end of the socket bracket and an output socket arranged at the tail end of the socket bracket, a lightning arrester connected with the input wiring box in parallel, and an under-voltage/overvoltage protection device and a leakage protection device which are respectively connected with the input wiring box in series. The power source protection socket for the multifunctional electric welding machine provided by the invention organically combines an anti-lightning protection module, an under-voltage/overvoltage protection module and an electrical shock protection module, which are in professional design; peak voltage generated by the other load of a power grid and peak voltage generated by lightning can be prevented from entering the electric welding machine through the power source protection socket for the multifunctional electric welding machine in a socket manner, so that the electric welding machine is prevented from being damaged; the working voltage of the electric welding machine is stable; the leakage is prevented; and the security of the staff can be protected.

Description

A kind of Multi-functional arc welding generator electric power protecting socket

Technical field

The present invention relates to the power supply socket of welding/cutting equipment, especially a kind of Multi-functional arc welding generator electric power protecting socket.

Background technology

electric welding machine is that the high-temperature electric arc utilizing positive and negative polarities to produce when instantaneous short circuit comes solder on consumable electrode and materials to be welded, reach the machine of the object making them combine, its supply unit is power conversion supply unit electrical network electric energy conversion being become the required electric energy of welding; The output of this supply unit meets welding or the current/voltage that requires of cutting technique, and input is common commercial power grid.Current welding/cutting power supply device and electrical network to refute the mode of connecing very simple, be all to adopt wire directly to refute to get access to grid or refuted by ordinary plug, socket and get access to grid, but such refuting connects method there are three large hidden danger:

one, the peak voltage of other loads of electrical network generation and the peak voltage of thunder and lightning generation can not decay, have no to enter electric welding machine with stopping, and usually breakdown potential welding machine electric power control circuit and electrical device, causes the damage of electric welding machine.

two, the fluctuation of line voltage exception causes electric welding machine operating voltage unstable, and low-voltage can cause electric welding machine to transship and damage, and high voltage can cause electric welder control device and electrical device excessive pressure damages.

three, electric welding machine operational environment is very poor, and insulation conditions may not reach safety requirements, the impaired Leakage Current of electric welding machine insulant, and staff, once welding machine casing or electric welding machine welding electric energy output end will be got an electric shock, causes casualties.

above-mentioned three large hidden danger are prevalent in various electric welding machine welding/cutting power supply and other electrical equipment, and the scheme eliminating these hidden danger often all deprofessionalization, processing method is single, in disorder, very dangerous.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, providing the large module of a kind of lightning protection of Specialty Design, under-voltage/overvoltage protection and electrocution-proof protection three organically to combine, take socket as a kind of Multi-functional arc welding generator electric power protecting socket of form.

Present invention employs following technical scheme:

A kind of Multi-functional arc welding generator electric power protecting socket; comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead; it is characterized in that, also comprise the input box that is located at described socket support front end and be located at the accessory power outlet of described socket support end, the lightning arrester in parallel with described input box, respectively with undervoltage/overvoltage protective device and the earth leakage protective device of described input wires cassette in series.

Further, described lightning arrester comprises: the first electric capacity C1, first, second protective tube F1, F2, the first amplitude limiter circuit be connected in series with this first, second protective tube, second amplitude limiter circuit in parallel with described first amplitude limiter circuit forms the first parallel circuits, second parallel circuits of the first clamp circuit in parallel, the second clamp circuit and the 3rd clamp circuit composition, this first, second parallel circuits is connected in series; Described first amplitude limiter circuit is by ceramic gas discharge device GD1, and the 3rd, the 4th, the 5th, the 6th Zinc-oxide piezoresistor VR3, VR4, VR5, VR6 forms; Described second amplitude limiter circuit is made up of first, second Zinc-oxide piezoresistor VR1, VR2; Described first clamp circuit by first and second diode D1, D2, the first resistance R1, the first LED 1 forms; Described second clamp circuit by the 4th diode D4, the second LED 2, second resistance R2, the 3rd diode D3 forms; Described 3rd clamp circuit is by the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th resistance R3, R4, R5, R6, R7, R8, and the 5th, the 6th, the 7th diode D5, D6, D7, triode Q1, the 3rd LED 3 forms.

Further, described undervoltage/overvoltage protective device comprises: the first bridge rectifier of sequential concatenation, control circuit power supply circuits, the first branch road that input signal circuit is formed, first Schmidt's voltage comparator circuit of sequential concatenation, first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that second Schmidt circuit is formed, connect with described second Schmidt circuit under-voltage/overvoltage power-off executive circuit, the power indicating circuit that/overvoltage power-off executive circuit under-voltage with described is in parallel, described first branch road and the second branch circuit parallel connection; Described first bridge rectifier by the 9th, the tenth, the 11, the 12 diode D9, D10, D11, D12 form; Described control circuit power supply circuits are by the 9th, 11,12 resistance R9, R11, R12, three terminal regulator Q3, the second electrochemical capacitor E2, and the second electric capacity C2 forms; Described input signal circuit by the 13, the 14 resistance R13, R14, the first electrochemical capacitor E1, the 3rd electric capacity C3 forms; Described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R15, R16 form; Described first Schmidt circuit by the 17,21,22,23 resistance R17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15; Described second Schmidt's voltage comparator circuit by by the 3rd integrated comparator U2C, the 19,20 resistance R19, R20 compositions; Described second Schmidt circuit is by the 24,25 resistance R24, R25, and the 14 diode D14 forms; Described under-voltage/overvoltage power-off executive circuit by the 26 resistance R26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R27, R28, the 16,17 diode D16, D17 composition; Described power indicating circuit is by first, second integrated comparator U2A, U2B, and the 29,30,40 resistance R29, R30, R40, the 4th, six, seven LEDs 4, LED6, LED7, the 4th electric capacity C4, the 8th diode D8 forms.

Further, described earth leakage protective device, comprising: connector, the second bridge rectifier be linked in sequence with described connector, filter capacitor, integrated electricity leakage protection device, simulation earth leakage protective test circuit, the leakage protection circuit in parallel with described simulation earth leakage protective test circuit; Described second bridge rectifier is by the 7th electric capacity C7, integrated electricity leakage protection device U1 inner voltage stabilizing circuit voltage stabilizing access leakage protection circuit; Described second bridge rectifier is made up of the 18,19,20,21 diode D18, D19, D20, D21; Described simulation earth leakage protective test circuit by simulating earth leakage protective testing button S2, the 37,38 current-limiting resistance R37 and R38, first, second binding post TS1 and TS2; Described leakage protection circuit detects instrument transformer T1 by leakage current; five, six, eight, nine, ten, 11 electric capacity C5, C6, C8, C9, C10, C11; 31,32,33,34,35,36 resistance R31, R32, R33, R34, R35, R36; 22 diode D22; controllable silicon Q4; reset button switch S the 1, five LED 5 forms.

Further, comprise the input box being located at described socket support front end and be located at described socket support end accessory power outlet, be arranged on lightning arrester between described input box and accessory power outlet.

Further, comprise the input box that is located at described socket support front end and be located at the accessory power outlet of described socket support end, the lightning arrester in parallel with described input box, and the undervoltage/overvoltage protective device of described input wires cassette in series.

Further, comprise the input box that is located at described socket support front end and be located at described socket support end accessory power outlet, respectively with undervoltage/overvoltage protective device and the earth leakage protective device of described input wires cassette in series.

Further, comprise the input box being located at described socket support front end and be located at described socket support end accessory power outlet, be arranged on undervoltage/overvoltage protective device between described input box and accessory power outlet.

Multi-functional arc welding generator electric power protecting socket of the present invention, that large to the lightning protection of Specialty Design, under-voltage/overvoltage protection and electrocution-proof protection three module is organically combined, and with the Multi-functional arc welding generator electric power protecting socket of the form of socket, the peak voltage that the peak voltage that can prevent other loads of electrical network from producing and thunder and lightning produce enters electric welding machine, avoids the damage causing electric welding machine; Keep electric welding machine stable operating voltage; Prevent electric leakage, the safety of protection staff; On especial operation, the electric welding machine protection socket of the part defencive function with Multi-functional arc welding generator electric power protecting socket of the present invention can be derived from, can use as the case may be, realize multifunction, specialization, variation.

Accompanying drawing explanation

For ease of illustrating, the present invention is described in detail by following preferred embodiment and accompanying drawing.

Fig. 1 is theory diagram of the present invention;

Fig. 2 is structural representation of the present invention;

Fig. 3 is electrical schematic diagram of the present invention;

Fig. 4 is the welder power protection socket schematic diagram only with lightning protection function;

Fig. 5 is the welder power protection socket schematic diagram with lightning protection and under-voltage/overvoltage protection;

Fig. 6 is the welder power protection socket schematic diagram with under-voltage/overvoltage protection and creepage protection function;

Fig. 7 is the welder power protection socket schematic diagram only with under-voltage/over-voltage protecting function.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

As shown in Figure 1, a kind of Multi-functional arc welding generator electric power protecting socket, by by equipment electrical power flow to and be linked in sequence under-voltage/the large module of overvoltage protective module, leakage protection module and thunder-arresting module three parallel with it forms.Electric network source inlet wire is E, N, L tri-line, wherein E is earth connection, N is zero line, L is phase line (live line), wherein a route zero line N, phase line (live line) L are responsible for through overvoltage/undervoltage/overvoltage protective module and leakage protection module transmission of electric energy to accessory power outlet, and earth connection E is responsible for ground protection; Thunder-arresting module filtering peak voltage is sent on another road, plays effect that is lightning-arrest and attenuating EMI.

As shown in Figure 2, a kind of Multi-functional arc welding generator electric power protecting socket is made up of input plug 1, input lead 2, input box 4, lightning arrester 5, undervoltage/overvoltage protective device 6, earth leakage protective device 7, accessory power outlet 8 and socket support 3.

Electrical network electric energy enters the terminal box 4 of this socket by input plug 1, lightning arrester 5 and its parallel connection, and undervoltage/overvoltage protective device 6, earth leakage protective device 7 are connected with it respectively; Lightning arrester 5 is responsible for bypass filtering from the thunder and lightning peak voltage of electrical network and EMI voltage, guarantees electric welding machine not by the impact of thunder and lightning peak voltage coming from electrical network, does not harass by the EMI coming from electrical network; Undervoltage/overvoltage protective device 6 is responsible for exceeding at line voltage and exporting lower than cutting off during nominal value range, guarantees that electric welding machine does not work in the dangerous work states such as under-voltage and overvoltage; Earth leakage protective device 7 is responsible for cutting off output in time when there being leakage current, the safety of operating personnel when guaranteeing that electric welding machine has leaky to occur.

As shown in Figure 3, circuit theory and operation principle are described below:

1, lightning arrester is by the first electric capacity C1, protective tube F1, F2, ceramic gas discharge device GD1, first, second, third and fourth, five, six Zinc-oxide piezoresistor VR1, VR2, VR3, VR4, VR5, VR6, first, second, third and fourth, five, six, seven diode D1, D2, D3, D4, D5, D6, D7, first, second, third and fourth, five, six, seven, eight resistance R1, R2, R3, R4, R5, R6, R7, R8, first triode Q1, first, second and third composition such as LED 1, LED2, LED3.Three wire E of lightning arrester, N, L respectively with three wire E of input plug 1, N, L correspondence in terminal box 4 connects together, thunder and lightning peak voltage differential-mode portion is by first, two pressure Zinc-oxide piezoresistor VR1 and VR2 amplitude limit clampers, co-moulded parts is by the 3rd, four, five, six Zinc-oxide piezoresistor VR3, VR4, VR5, VR6 and ceramic gas discharge device GD1 amplitude limit clamper, the peak voltage that the peak voltage that other loads of electrical network on electrical network are produced and thunder and lightning produce is decayed greatly, guarantee to refute the electric welding machine being connected to this protection socket not harass by peak voltage impact and EMI.

For guaranteeing the safety of electric welding machine, lightning arrester is that a moment can not be out-of-work, to take shelter from the thunder normal indicator light so be provided with first, second and third working station indicator of lightning arrester LED1(specially), LED2(incorrect polarity indicator light) and LED3(ground connection mistake indicator light).The normal indicator light if working station indicator LED1(takes shelter from the thunder) shinny, illustrate that lightning-arrest loop works is normal, if extinguish, illustrate that lightning-arrest loop works is abnormal, need to check first and second protective tube F1 and F2; If working station indicator LED2(incorrect polarity indicator light) shinny, electric power polarity L and N wrong are described, need to exchange polarity and make LED2(incorrect polarity indicator light) extinguish; If working station indicator LED3(ground connection mistake indicator light) shinny, illustrate that power ground E holds imperfect earth, need to check that correction causes LED3(ground connection mistake indicator light) extinguish.

2, undervoltage/overvoltage protective device is by first, two electrochemical capacitor E1, E2, second, three, four C2, C3, C4, 9th, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 resistance R9, R11, R12, R13, R14, R15, R16, R17, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, 9th, ten, 11, 12, 13, 14, 15, 16, 17 diode D9, D10, D11, D12, D13, D14, D15, D16, D17, second triode Q2, field effect transistor M1, 4th, six, seven LEDs 4, LED6, LED7, second integrated comparator U2 and relay two J1, J2(J1A and J1B is the line bag of two relays, J1B and J2B is the normally opened contact of two relays) etc. composition.

Line voltage delivers to the input of undervoltage/overvoltage protective device by power line N and L, one tunnel enters the input of the normally opened contact of relay J 1 and J2, the bridge rectifier of one tunnel the 9th, ten, 11,12 diode D9, D10, D11, D12 composition is rectified into direct voltage, this direct voltage one tunnel is through resistance R9 current limliting, + 25 volt operating voltages of stable output after three terminal regulator Q3 voltage stabilizing and the second electrochemical capacitor E2, the second electric capacity C2 filtering, for the control circuit of undervoltage/overvoltage protective device is powered; Separately lead up to after the 26 resistance R26 current limliting for relay is powered; Lead up to the 13,14 resistance R13 and resistance R14 dividing potential drop in addition, after the first electrolytic capacitor E1 and the 3rd electric capacity C3 filtering, send into comparator voltage signal input part as the sampled voltage of reflection line voltage.4th integrated comparator U2D and peripheral circuits composition Schmidt voltage comparator circuit, comparison and the result of being responsible for under-voltage protection export, wherein the partial pressure value of the 15,16 resistance R15 and resistance R16 is the under-voltage comparison value of line voltage, 17,21 resistance R17, R21 and the second triode Q2 form Schmidt circuit, are responsible for producing hysteresis voltage; 3rd integrated comparator U2C and peripheral circuits composition Schmidt voltage comparator circuit, comparison and the result of being responsible for overvoltage protection export, wherein the partial pressure value of the 19,20 resistance R19 and resistance R20 is line voltage overvoltage comparison value, 24 resistance R24 and the 14 diode D14 forms Schmidt circuit, is responsible for producing hysteresis voltage; Field effect transistor M1 and first and second J1, J2 and the under-voltage/overvoltage power-off executive circuit of peripheral devices composition; Second integrated comparator U2B and the 6th indicator light LED6, the first integrated comparator U2A and the 7th indicator light LED7 and the 4th indicator light LED4 etc. form under-voltage/overvoltage and power indicating circuit.

When the lower limit of line voltage lower than electric welding machine; the in-phase end voltage of the 4th integrated comparator U2D is lower than its end of oppisite phase voltage; 4th integrated comparator U2D exports as low; 13 diode D13 conducting, has dragged down the grid voltage of field effect transistor M1 by the 27 resistance R27, and field effect transistor M1 ends; first and second relay J 1 and J2 dead electricity; its contact disconnects and has cut off the passage of electrical network to socket delivery outlet power transmission, and electric welding machine is de-energized, and is protected.Meanwhile, the 4th indicator light LED4 extinguishes expression protection socket and is in disconnected output state, and due to the effect of the second integrated comparator U2B, the 6th under-voltage indicator light LED6 is luminous, and display socket power-off now belongs to the power-off of grid undervoltage protectiveness.

When the higher limit of line voltage higher than electric welding machine; the in-phase end voltage of the 3rd integrated comparator U2C is lower than its end of oppisite phase voltage; 3rd integrated comparator U2C exports as low; 15 diode D15 conducting, has dragged down the grid voltage of field effect transistor M1 by the 27 resistance R27, and field effect transistor M1 ends; first and second relay J 1 and J2 dead electricity; its contact disconnects and has cut off the passage of electrical network to socket delivery outlet power transmission, and electric welding machine is de-energized, and is protected.Meanwhile, the 4th indicator light LED4 extinguishes expression protection socket and is in disconnected output state, and due to the effect of the second integrated comparator U2A, the 7th overvoltage indicator light LED7 is luminous, and display socket power-off now belongs to the power-off of electrical network overvoltage protection.

When electrical network belongs to range of normal value, the in-phase end voltage of the 4th integrated comparator U2D is higher than its end of oppisite phase voltage, and the 4th integrated comparator U2D exports as high; The in-phase end voltage of the 3rd integrated comparator U2C is higher than its end of oppisite phase voltage, it is also high that 3rd integrated comparator U2C exports, 13,15 diode D13 and D15 all end, + 25 volt direct voltages pass through the 23 resistance R23 to the grid voltage of field effect transistor M1 foundation about+12V, field effect transistor M1 conducting, first and second relay J 1 and J2 obtain electric, its contacting, be communicated with the passage of electrical network to socket delivery outlet power transmission, electric welding machine obtains the power supply electric energy of electrical network.Meanwhile, the 4th indicator light LED4 is luminous, and the 6th under-voltage indicator light LED6, the 7th overvoltage indicator light LED7 all extinguish, and represents that protection socket is in normal power supply state.

3, earth leakage protective device detects instrument transformer T1 by leakage current, integrated electricity leakage protection device U1, 5th, six, seven, eight, nine, ten, 11 electric capacity C5, C6, C7, C8, C9, C10, C11, 31, 32, 33, 34, 35, 36, 37, 38 resistance R31, R32, R33, R34, R35, R36, R37, R38, 18, 19, 20, 21, 22 diode D18, D19, D20, D21, D22, controllable silicon Q4, reset button switch S 1, testing button switch S 2, LED 5 and connector A1, the compositions such as B1.Wherein, line voltage delivers to the work energization input of earth leakage protective device circuit by connector A1, B1; again by the 18,19,20,21 diode D18, D19, D20, D21 bridge rectifier rectifications; 7th electric capacity C7 filtering is earth leakage protective device circuit supply after the inner voltage stabilizing circuit voltage stabilizing of integrated electricity leakage protection device U1.

When there being leakage current to produce; electric current on phase line L has been leaked to the earth; instrument transformer is detected for leakage current; through phase line L flow out electric current some be bypassed; do not flow back to electrical network by zero line N; the magnetic flux that leakage current detects in transformer core is non-vanishing; this will produce mutual inductance electric current; this electric current by producing pressure drop after transformer secondary winding on sampling the 31 resistance R31; this pressure drop reaches a definite limitation; integrated electricity leakage protection device U1 will export a trigger voltage at its 7 pin, trigger controllable silicon Q4 and make its conducting.10 pin of connector A1 are made to become electronegative potential after Q4 conducting immediately; by being communicated with of connector A1 with B1; this electronegative potential reaches 10 pin of connector B1; dragged down the grid voltage of field effect transistor M1 by the effect of the 16 diode D16, field effect transistor M1 ends, first and second relay J 1 and J2 dead electricity; its contact disconnects; cut off the passage of electrical network to socket delivery outlet power transmission, electric welding machine is de-energized, and is protected.5th electric leakage indicator light LED5 is luminous simultaneously, and instruction has electric leakage accident to occur.Due to silicon controlled effect, earth leakage protective off-position and earth leakage protective instruction are kept, and are removed until get rid of leak current fault and press reset button switch S 1 rear.

The reliability of earth leakage protective device is directly connected to life safety, and its reliability is extremely important, to such an extent as to flashy work stops also not allowed.Therefore, necessary its function of periodic inspection, to guarantee that the disappearance of random time does not appear in its defencive function.Be provided with simulation earth leakage protective testing button S2 for this reason; specifically electrical network phase line L and zero line N is respectively gone here and there one the 37, after 38 current-limiting resistance R37 and R38 by the leakage tests push-button switch S2 of series connection with it; then test lead is drawn from first and second binding post TS1 and TS2; this loop detects the magnetic core of instrument transformer through leakage current, forms simulation earth leakage protective test circuit.When whether needs detection creepage protection function is effective, click leakage tests push-button switch S2, just have weak current by test coil, the magnetic core making leakage current detect instrument transformer produces magnetic flux.It is a mechanism that this and electric welding machine have leakage current to produce, and the magnetic flux that leakage current produces is at secondary generation mutual inductance electric current, and this electric current by producing pressure drop after transformer secondary winding on sampling the 31 resistance R31.Integrated electricity leakage protection device U1 will export a trigger voltage at its 7 pin, trigger controllable silicon Q4 and make its conducting.10 pin of connector A1 are made to become electronegative potential after Q4 conducting immediately; effect is communicated with by connector A1 with B1; this electronegative potential reaches 10 pin of connector B1; dragged down the grid voltage of field effect transistor M1 by the effect of diode D16, field effect transistor M1 ends, first and second relay J 1 and J2 dead electricity; its contact disconnects; cut off the passage of electrical network to socket delivery outlet power transmission, electric welding machine is de-energized, and is protected.The indicator light LED5 that simultaneously leaks electricity is luminous, and instruction has electric leakage accident to occur.Due to silicon controlled effect, earth leakage protective off-position and earth leakage protective instruction are kept, and are removed until press reset button switch S 1 rear.

The value of the 37,38 current-limiting resistance R37 with R38 makes the electric current that flows through the same with earth leakage protective device leakage current limit value, the validity of judgement earth leakage protective device defencive function that so just can be correct when simulation test.

This Multi-functional arc welding generator electric power protecting socket is the Multi-functional arc welding generator protection socket with lightning protection, under-voltage/overvoltage protection and electrocution-proof protection.During as especial operation, the electric welding machine protection socket of a part defencive function of this Multi-functional arc welding generator of tool protection socket can be derived.

As shown in Figure 4, this welder power protection socket only has the welder power protection socket of lightning protection function, is made up of input plug 1, input lead 2, input box 4, lightning arrester 5a, accessory power outlet 8 and socket support 3.

As shown in Figure 5; this welder power protection socket has the welder power protection socket of lightning protection and under-voltage/over-voltage protecting function, is made up of input plug 1, input lead 2, input box 4, lightning arrester 5b, undervoltage/overvoltage protective device 6b, accessory power outlet 8 and socket support 3.

As shown in Figure 6; this welder power protection socket has the welder power protection socket of under-voltage/over-voltage protecting function and creepage protection function, is made up of input plug 1, input lead 2, input box 4, undervoltage/overvoltage protective device 6c, earth leakage protective device 7c, accessory power outlet 8 and socket support 3.

As shown in Figure 7, this welder power protection socket only has the welder power protection socket of under-voltage/over-voltage protecting function, is made up of input plug 1, input lead 2, input box 4, undervoltage/overvoltage protective device 6d accessory power outlet 8 and socket support 3.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims

1. a kind of Multi-functional arc welding generator electric power protecting socket, comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead, it is characterized in that, also comprise the input box that is located at described socket support front end and be located at the accessory power outlet of described socket support end, the lightning arrester in parallel with described input box, respectively with undervoltage/overvoltage protective device and the earth leakage protective device of described input wires cassette in series;

described lightning arrester comprises: the first electric capacity C1, first, second protective tube F1, F2, the first amplitude limiter circuit be connected in series with this first, second protective tube, second amplitude limiter circuit in parallel with described first amplitude limiter circuit forms the first parallel circuits, second parallel circuits of the first clamp circuit in parallel, the second clamp circuit and the 3rd clamp circuit composition, this first, second parallel circuits is connected in series; Described first amplitude limiter circuit is by ceramic gas discharge device GD1, and the 3rd, the 4th, the 5th, the 6th Zinc-oxide piezoresistor VR3, VR4, VR5, VR6 forms; Described second amplitude limiter circuit is made up of first, second Zinc-oxide piezoresistor VR1, VR2; Described first clamp circuit by first, second diode D1, D2, the first resistance R1, the first LED 1 forms; Described second clamp circuit by the 4th diode D4, the second LED 2, second resistance R2, the 3rd diode D3 forms; Described 3rd clamp circuit is by the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th resistance R3, R4, R5, R6, R7, R8, and the 5th, the 6th, the 7th diode D5, D6, D7, triode Q1, the 3rd LED 3 forms.

2. multi-functional arc welding generator electric power protecting socket as claimed in claim 1, it is characterized in that, described undervoltage/overvoltage protective device comprises: the first bridge rectifier of sequential concatenation, control circuit power supply circuits, the first branch road that input signal circuit is formed, first Schmidt's voltage comparator circuit of sequential concatenation, first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that second Schmidt circuit is formed, connect with described second Schmidt circuit under-voltage/overvoltage power-off executive circuit, the power indicating circuit that/overvoltage power-off executive circuit under-voltage with described is in parallel, described first branch road and the second branch circuit parallel connection, described first bridge rectifier by the 9th, the tenth, the 11, the 12 diode D9, D10, D11, D12 form, described control circuit power supply circuits are by the 9th, 11,12 resistance R9, R11, R12, three terminal regulator Q3, the second electrochemical capacitor E2, and the second electric capacity C2 forms, described input signal circuit by the 13, the 14 resistance R13, R14, the first electrochemical capacitor E1, the 3rd electric capacity C3 forms, described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R15, R16 form, described first Schmidt circuit by the 17,21,22,23 resistance R17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15, described second Schmidt's voltage comparator circuit by by the 3rd integrated comparator U2C, the 19,20 resistance R19, R20 compositions, described second Schmidt circuit is by the 24,25 resistance R24, R25, and the 14 diode D14 forms, described under-voltage/overvoltage power-off executive circuit by the 26 resistance R26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R27, R28, the 16,17 diode D16, D17 composition, described power indicating circuit is by first, second integrated comparator U2A, U2B, and the 29,30,40 resistance R29, R30, R40, the 4th, six, seven LEDs 4, LED6, LED7, the 4th electric capacity C4, the 8th diode D8 forms.

3. multi-functional arc welding generator electric power protecting socket as claimed in claim 2, it is characterized in that, described earth leakage protective device, comprise: connector, the second bridge rectifier be linked in sequence with described connector, filter capacitor, integrated electricity leakage protection device, simulation earth leakage protective test circuit, the leakage protection circuit in parallel with described simulation earth leakage protective test circuit; Described second bridge rectifier is by the 7th electric capacity C7, integrated electricity leakage protection device U1 inner voltage stabilizing circuit voltage stabilizing access leakage protection circuit; Described second bridge rectifier is made up of the 18,19,20,21 diode D18, D19, D20, D21; Described simulation earth leakage protective test circuit by simulating earth leakage protective testing button S2, the 37,38 current-limiting resistance R37 and R38, first, second binding post TS1 and TS2; Described leakage protection circuit detects instrument transformer T1 by leakage current; five, six, eight, nine, ten, 11 electric capacity C5, C6, C8, C9, C10, C11; 31,32,33,34,35,36 resistance R31, R32, R33, R34, R35, R36; 22 diode D22; controllable silicon Q4; reset button switch S the 1, five LED 5 forms.

4. a kind of Multi-functional arc welding generator electric power protecting socket, comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead, it is characterized in that, also comprise the input box being located at described socket support front end and the accessory power outlet being located at described socket support end, be arranged on lightning arrester between described input box and accessory power outlet;

5. a kind of Multi-functional arc welding generator electric power protecting socket, comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead, it is characterized in that, also comprise the input box that is located at described socket support front end and be located at the accessory power outlet of described socket support end, the lightning arrester in parallel with described input box, and the undervoltage/overvoltage protective device of described input wires cassette in series;

described lightning arrester comprises: the first electric capacity C1, first, second protective tube F1, F2, the first amplitude limiter circuit be connected in series with this first, second protective tube, second amplitude limiter circuit in parallel with described first amplitude limiter circuit forms the first parallel circuits, second parallel circuits of the first clamp circuit in parallel, the second clamp circuit and the 3rd clamp circuit composition, this first, second parallel circuits is connected in series; Described first amplitude limiter circuit is by ceramic gas discharge device GD1, and the 3rd, the 4th, the 5th, the 6th Zinc-oxide piezoresistor VR3, VR4, VR5, VR6 forms; Described second amplitude limiter circuit is made up of first, second Zinc-oxide piezoresistor VR1, VR2; Described first clamp circuit by first, second diode D1, D2, the first resistance R1, the first LED 1 forms; Described second clamp circuit by the 4th diode D4, the second LED 2, second resistance R2, the 3rd diode D3 forms; Described 3rd clamp circuit by the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th resistance R3, R4, R5, R6, R7, R8, the 5th, the 6th, the 7th diode D5, D6, D7, triode Q1, the 3rd LED 3 forms;

described undervoltage/overvoltage protective device comprises: the first bridge rectifier of sequential concatenation, control circuit power supply circuits, the first branch road that input signal circuit is formed, first Schmidt's voltage comparator circuit of sequential concatenation, first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that second Schmidt circuit is formed, connect with described second Schmidt circuit under-voltage/overvoltage power-off executive circuit, the power indicating circuit that/overvoltage power-off executive circuit under-voltage with described is in parallel, described first branch road and the second branch circuit parallel connection; Described first bridge rectifier by the 9th, the tenth, the 11, the 12 diode D9, D10, D11, D12 form; Described control circuit power supply circuits are by the 9th, 11,12 resistance R9, R11, R12, three terminal regulator Q3, the second electrochemical capacitor E2, and the second electric capacity C2 forms; Described input signal circuit by the 13, the 14 resistance R13, R14, the first electrochemical capacitor E1, the 3rd electric capacity C3 forms; Described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R15, R16 form; Described first Schmidt circuit by the 17,21,22,23 resistance R17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15; Described second Schmidt's voltage comparator circuit by by the 3rd integrated comparator U2C, the 19,20 resistance R19, R20 compositions; Described second Schmidt circuit is by the 24,25 resistance R24, R25, and the 14 diode D14 forms; Described under-voltage/overvoltage power-off executive circuit by the 26 resistance R26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R27, R28, the 16,17 diode D16, D17 composition; Described power indicating circuit is by first, second integrated comparator U2A, U2B, and the 29,30,40 resistance R29, R30, R40, the 4th, six, seven LEDs 4, LED6, LED7, the 4th electric capacity C4, the 8th diode D8 forms.

6. a kind of Multi-functional arc welding generator electric power protecting socket, comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead, it is characterized in that, also comprise the input box that is located at described socket support front end and be located at described socket support end accessory power outlet, respectively with undervoltage/overvoltage protective device and the earth leakage protective device of described input wires cassette in series;

described undervoltage/overvoltage protective device comprises: the first bridge rectifier of sequential concatenation, control circuit power supply circuits, the first branch road that input signal circuit is formed, first Schmidt's voltage comparator circuit of sequential concatenation, first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that second Schmidt circuit is formed, connect with described second Schmidt circuit under-voltage/overvoltage power-off executive circuit, the power indicating circuit that/overvoltage power-off executive circuit under-voltage with described is in parallel, described first branch road and the second branch circuit parallel connection; Described first bridge rectifier by the 9th, the tenth, the 11, the 12 diode D9, D10, D11, D12 form; Described control circuit power supply circuits are by the 9th, 11,12 resistance R9, R11, R12, three terminal regulator Q3, the second electrochemical capacitor E2, and the second electric capacity C2 forms; Described input signal circuit by the 13, the 14 resistance R13, R14, the first electrochemical capacitor E1, the 3rd electric capacity C3 forms; Described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R15, R16 form; Described first Schmidt circuit by the 17,21,22,23 resistance R17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15; Described second Schmidt's voltage comparator circuit by by the 3rd integrated comparator U2C, the 19,20 resistance R19, R20 compositions; Described second Schmidt circuit is by the 24,25 resistance R24, R25, and the 14 diode D14 forms; Described under-voltage/overvoltage power-off executive circuit by the 26 resistance R26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R27, R28, the 16,17 diode D16, D17 composition; Described power indicating circuit by first, second integrated comparator U2A, U2B, the 29,30,40 resistance R29, R30, R40, the 4th, six, seven LEDs 4, LED6, LED7, the 4th electric capacity C4, the 8th diode D8 forms;

described earth leakage protective device, comprising: connector, the second bridge rectifier be linked in sequence with described connector, filter capacitor, integrated electricity leakage protection device, simulation earth leakage protective test circuit, the leakage protection circuit in parallel with described simulation earth leakage protective test circuit; Described second bridge rectifier is by the 7th electric capacity C7, integrated electricity leakage protection device U1 inner voltage stabilizing circuit voltage stabilizing access leakage protection circuit; Described second bridge rectifier is made up of the 18,19,20,21 diode D18, D19, D20, D21; Described simulation earth leakage protective test circuit by simulating earth leakage protective testing button S2, the 37,38 current-limiting resistance R37 and R38, first, second binding post TS1 and TS2; Described leakage protection circuit detects instrument transformer T1 by leakage current; five, six, eight, nine, ten, 11 electric capacity C5, C6, C8, C9, C10, C11; 31,32,33,34,35,36 resistance R31, R32, R33, R34, R35, R36; 22 diode D22; controllable silicon Q4; reset button switch S the 1, five LED 5 forms.

7. a kind of Multi-functional arc welding generator electric power protecting socket, comprise input plug, the input lead be connected with input plug, the socket support that is connected with input lead, it is characterized in that, also comprise the input box being located at described socket support front end and the accessory power outlet being located at described socket support end, be arranged on undervoltage/overvoltage protective device between described input box and accessory power outlet;