CN102931544A - Power source protection socket for multifunctional electric welding machine - Google Patents
Power source protection socket for multifunctional electric welding machine Download PDFInfo
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- CN102931544A CN102931544A CN2012105025190A CN201210502519A CN102931544A CN 102931544 A CN102931544 A CN 102931544A CN 2012105025190 A CN2012105025190 A CN 2012105025190A CN 201210502519 A CN201210502519 A CN 201210502519A CN 102931544 A CN102931544 A CN 102931544A
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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
Technical field
The present invention relates to weld/the power supply socket of 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 that utilizes positive and negative polarities to produce when instantaneous short circuit comes scolder and the materials to be welded on the consumable electrode, reach the machine of the purpose that makes their combinations, its supply unit is the electric power Flow varying power supply device that the electrical network electric energy conversion is become the required electric energy of welding; The output of this supply unit is to meet welding or the current/voltage that requires of cutting technique, and input is common commercial power grid.Present welding/cutting power supply device and electrical network to refute the mode of connecing very simple, all be to adopt wire directly to refute to get access to grid or refute by ordinary plug, socket to get access to grid, have three large hidden danger but such refuting connects method:
One, the peak voltage of the peak voltage of other loads generations of electrical network and thunder and lightning generation can decay, has no not enter electric welding machine with stopping, and usually breakdown potential welding machine electric power control circuit and electrical device cause the damage of electric welding machine.
Two, the unusual fluctuation of line voltage causes the electric welding machine operating voltage unstable, and low-voltage can cause the electric welding machine overload to damage, and high voltage can cause electric welding machine control device and electrical device overvoltage to damage.
Three, the electric welding machine operational environment is very poor, and the insulation condition may not reach safety requirements, and the impaired Leakage Current of electric welding machine insulant in case staff's 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 supplies and other electrical equipment, and the scheme of eliminating these hidden danger is deprofessionalizations all often, and processing method is single, in disorder, and is very dangerous
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of lightning protection of Specialty Design, under-voltage/overvoltage protection and electrocution-proof protection three large modules organically to combine a kind of Multi-functional arc welding generator electric power protecting socket take socket as form.
The present invention has adopted following technical scheme:
A kind of Multi-functional arc welding generator electric power protecting socket; comprise input plug, the input lead that is 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 capacitor C 1, first, second protective tube F1, F2, the first amplitude limiter circuit that is connected in series with this first, second protective tube, second amplitude limiter circuit in parallel with described the first amplitude limiter circuit consists of the first parallel circuits, the second parallel circuits that the first clamp circuit in parallel, the second clamp circuit and the 3rd clamp circuit form, this first, second parallel circuits serial connection; Described the 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 form; Described the second amplitude limiter circuit is comprised of first, second Zinc-oxide piezoresistor VR1, VR2; Described the first clamp circuit is by first and second diode D1, D2, and the first resistance R 1, the first LED 1 forms; Described the second clamp circuit is by the 4th diode D4, and the second LED 2, the second resistance R 2, the three diode D3 form; Described the 3rd clamp circuit is by the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th resistance R 3, R4, R5, R6, R7, R8, the 5th, the 6th, the 7th diode D5, D6, D7, and triode Q1, the 3rd LED 3 forms.
Further, described undervoltage/overvoltage protective device comprises: the first bridge rectifier of order serial connection, the control circuit power supply circuits, the first branch road that input signal circuit consists of, first Schmidt's voltage comparator circuit of order serial connection, the first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that the second Schmidt circuit consists of, connect with described the second Schmidt circuit under-voltage/overvoltage outage executive circuit, with described under-voltage/overvoltage outage executive circuit power indicating circuit in parallel, described the first branch road and the second branch circuit parallel connection; Described the 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 R 9, R11, R12, three terminal regulator Q3, and the second electrochemical capacitor E2, the second capacitor C 2 forms; Described input signal circuit is by the 13, the 14 resistance R 13, R14, the first electrochemical capacitor E1, and the 3rd capacitor C 3 forms; Described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R 15, R16 form; Described the first Schmidt circuit is by the 17,21,22,23 resistance R 17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15; Described second Schmidt's voltage comparator circuit is by by the 3rd integrated comparator U2C, and the 19,20 resistance R 19, R20 form; Described the second Schmidt circuit is by the 24,25 resistance R 24, R25, and the 14 diode D14 forms; Described under-voltage/overvoltage outage executive circuit is by the 26 resistance R 26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R 27, R28, the 16,17 diode D16, D17 form; Described power indicating circuit is by first, second integrated comparator U2A, U2B, the 29,30,40 resistance R 29, R30, R40, and the 4th, six, seven LEDs 4, LED6, LED7, the 4th capacitor C 4, the eight diode D8 form.
Further, described earth leakage protective device comprises: connector, with the second bridge rectifier that described connector is linked in sequence, 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 the second bridge rectifier is by the 7th capacitor C 7, and the inner voltage stabilizing circuit voltage stabilizing of integrated electricity leakage protection device U1 accesses leakage protection circuit; Described the second bridge rectifier is comprised of the 18,19,20,21 diode D18, D19, D20, D21; Described simulation earth leakage protective test circuit is by simulation 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 capacitor C 5, C6, C8, C9, C10, C11; the 31,32,33,34,35,36 resistance R 31, R32, R33, R34, R35, R36; the 22 diode D22; controllable silicon Q4; reset button switch S 1, the five LED 5 forms.
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, be arranged on the lightning arrester between described input box and the 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 the accessory power outlet of described socket support end, respectively with undervoltage/overvoltage protective device and the earth leakage 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, be arranged on the undervoltage/overvoltage protective device between described input box and the accessory power outlet.
Multi-functional arc welding generator electric power protecting socket of the present invention, that the lightning protection of Specialty Design, under-voltage/overvoltage protection and electrocution-proof protection three large modules are organically combined, and with the Multi-functional arc welding generator electric power protecting socket of the form of socket, can prevent that the peak voltage of other loads generations of electrical network and the peak voltage that thunder and lightning produces from entering electric welding machine, avoids causing the damage of electric welding machine; Keep the electric welding machine stable operating voltage; Prevent electric leakage, Protection personnel's safety; On especial operation, can derive from 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 use as the case may be, realize multifunction, specialization, variation.
Description of drawings
In order to be easy to explanation, the present invention is done to describe 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 for only having the welder power protection socket schematic diagram of 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 for only having the welder power protection socket schematic diagram of under-voltage/over-voltage protecting function.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, 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, is 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 the electrical power flow of equipment to and be linked in sequence under-voltage/overvoltage protective module, leakage protection module and with it parallel thunder-arresting module three large modules form.The electric network source inlet wire is E, N, L three lines, wherein E is that earth connection, N are that zero line, L are 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 lightning-arrest and that lower EMI.
As shown in Figure 2, a kind of Multi-functional arc welding generator electric power protecting socket is comprised 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.
The terminal box 4 that the electrical network electric energy enters this socket by input plug 1, lightning arrester 5 and its parallel connection, undervoltage/overvoltage protective device 6, earth leakage protective device 7 respectively with its series connection; Lightning arrester 5 is responsible for the bypass filtering from thunder and lightning peak voltage and the EMI voltage of electrical network, guarantees that electric welding machine is not come from the impact of the thunder and lightning peak voltage of electrical network, and the EMI that is not come from electrical network harasses; Undervoltage/overvoltage protective device 6 is responsible for when line voltage exceeds and be lower than the rated value scope cutting off output, guarantees that electric welding machine does not work in under-voltage and the dangerous work state such as overvoltage; Earth leakage protective device 7 is responsible in time cutting off output when leakage current is arranged, and guarantees the safety of operating personnel when 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 capacitor C 1, 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 R 1, R2, R3, R4, R5, R6, R7, R8, the first triode Q1, first, second and third LED 1, the compositions such as LED2, LED3.Three wire E of lightning arrester; N; L respectively with three wire E of input plug 1; N; L connects together in 4 li correspondences of terminal box; thunder and lightning peak voltage differential mode part is by first; two press Zinc-oxide piezoresistor VR1 and VR2 amplitude limit clamper; common mode is partly by the 3rd; four; five; six Zinc-oxide piezoresistor VR3; VR4; VR5; VR6 and ceramic gas discharge device GD1 amplitude limit clamper; so that the peak voltage that the peak voltage that other loads of the electrical network on the electrical network produce and thunder and lightning produce is decayed greatly, guarantee to refute the electric welding machine that is connected to this protection socket and not harassed 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, so be provided with specially the lightning-arrest normal indicator light of first, second and third working station indicator of lightning arrester LED1(), 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 unusual, 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 transposing polarity so that LED2(incorrect polarity indicator light) extinguish; If working station indicator LED3(ground connection mistake indicator light) shinny, illustrate that power ground E end ground connection is bad, need to check to correct to cause 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; the 9th; 11; 12; 13; 14; 15; 16; 17; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30 resistance R 9; R11; R12; R13; R14; R15; R16; R17; R19; R20; R21; R22; R23; R24; R25; R26; R27; R28; R29; R30; the 9th; ten; 11; 12; 13; 14; 15; 16; 17 diode D9; D10; D11; D12; D13; D14; D15; D16; D17; the second triode Q2; field effect transistor M1; the 4th; six; seven LEDs 4; LED6; LED7; two J1 of the second integrated comparator U2 and relay; J2(J1A and J1B are the line bag of two relays, and J1B and J2B are the normally opened contact of two relays) etc. composition.
Line voltage is delivered to the input of undervoltage/overvoltage protective device by power line N and L, one the tunnel enters the input of the normally opened contact of relay J 1 and J2, one tunnel bridge rectifier that forms through the 9th, ten, 11,12 diode D9, D10, D11, D12 is rectified into direct voltage, this direct voltage one tunnel is through resistance R 9 current limlitings, after three terminal regulator Q3 voltage stabilizing and the second electrochemical capacitor E2,2 filtering of the second capacitor C stable output+25 couchers make voltage, are the control circuit power supply of undervoltage/overvoltage protective device; Another road is by being the relay power supply after the 26 resistance R 26 current limlitings; Lead up in addition the 13,14 resistance R 13 and resistance R 14 dividing potential drops, send into the comparator voltage signal input part as the sampled voltage of reflection line voltage after the first electrolytic capacitor E1 and 3 filtering of the 3rd capacitor C.The 4th integrated comparator U2D and peripheral circuits form Schmidt's voltage comparator circuit, be responsible for comparison and result's output of under-voltage protection, wherein the partial pressure value of the 15,16 resistance R 15 and resistance R 16 is the under-voltage comparison value of line voltage, the 17,21 resistance R 17, R21 and the second triode Q2 form Schmidt circuit, are responsible for producing hysteresis voltage; The 3rd integrated comparator U2C and peripheral circuits form Schmidt's voltage comparator circuit, be responsible for comparison and result's output of overvoltage protection, wherein the partial pressure value of the 19,20 resistance R 19 and resistance R 20 is line voltage overvoltage comparison value, the 24 resistance R 24 and the 14 diode D14 form Schmidt circuit, are responsible for producing hysteresis voltage; Field effect transistor M1 and first and second J1, J2 and peripheral devices composition are under-voltage/overvoltage outage executive circuit; The 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 line voltage is lower than the lower limit of electric welding machine; the in-phase end voltage of the 4th integrated comparator U2D is lower than its end of oppisite phase voltage; the 4th integrated comparator U2D is output as low; the 13 diode D13 conducting has dragged down the grid voltage of field effect transistor M1 by the 27 resistance R 27, field effect transistor M1 cut-off; first and second relay J 1 and J2 dead electricity; its contact disconnection has been cut off electrical network and has been sent electric passage to the socket delivery outlet, and electric welding machine is de-energized, and is protected.Simultaneously, the 4th indicator light LED4 extinguishes expression protection socket and is in disconnected output state, because the effect of the second integrated comparator U2B, the 6th under-voltage indicator light LED6 is luminous, shows that the socket outage of this moment is to belong to electrical network under-voltage protection outage.
When line voltage is higher than the higher limit of electric welding machine; the in-phase end voltage of the 3rd integrated comparator U2C is lower than its end of oppisite phase voltage; the 3rd integrated comparator U2C is output as low; the 15 diode D15 conducting has dragged down the grid voltage of field effect transistor M1 by the 27 resistance R 27, field effect transistor M1 cut-off; first and second relay J 1 and J2 dead electricity; its contact disconnection has been cut off electrical network and has been sent electric passage to the socket delivery outlet, and electric welding machine is de-energized, and is protected.Simultaneously, the 4th indicator light LED4 extinguishes expression protection socket and is in disconnected output state, because the effect of the second integrated comparator U2A, the 7th overvoltage indicator light LED7 is luminous, shows that the socket outage of this moment is to belong to the outage of electrical network overvoltage protection.
When electrical network belonged to range of normal value, the in-phase end voltage of the 4th integrated comparator U2D was higher than its end of oppisite phase voltage, and the 4th integrated comparator U2D is output as height; The in-phase end voltage of the 3rd integrated comparator U2C is higher than its end of oppisite phase voltage, the 3rd integrated comparator U2C output also is high, the 13,15 diode D13 and D15 all end, + 25 volts of grid voltages that direct voltage is given about field effect transistor M1 foundation+12V by the 23 resistance R 23, field effect transistor M1 conducting, first and second relay J 1 and J2 get electric, its contacting, be communicated with electrical network and sent electric passage to the socket delivery outlet, electric welding machine obtains the power supply electric energy of electrical network.Simultaneously, the 4th indicator light LED4 is luminous, and the 6th under-voltage indicator light LED6, the 7th overvoltage indicator light LED7 all extinguish, and expression protection socket is in the normal power supply state.
3; earth leakage protective device detects instrument transformer T1 by leakage current; integrated electricity leakage protection device U1; the 5th; six; seven; eight; nine; ten; 11 capacitor C 5; C6; C7; C8; C9; C10; C11; the 31; 32; 33; 34; 35; 36; 37; 38 resistance R 31; R32; R33; R34; R35; R36; R37; R38; the 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 is delivered to the work of earth leakage protective device circuit for electrical input by connector A1, B1; again by the 18,19,20,21 diode D18, D19, D20, the rectification of D21 bridge rectifier; 7 filtering of the 7th capacitor C are the earth leakage protective device circuit supply after the inner voltage stabilizing circuit voltage stabilizing of integrated electricity leakage protection device U1.
When having leakage current to produce; electric current on the phase line L has been leaked to the earth; detect instrument transformer for leakage current; some is bypassed the electric current that process phase line L flows out; do not flow back to electrical network by zero line N; the magnetic flux that leakage current detects in the transformer core is non-vanishing; this will produce the mutual inductance electric current; this electric current by the instrument transformer secondary winding after the sampling the 31 resistance R 31 produce pressure drop; this pressure drop reaches certain limitation; integrated electricity leakage protection device U1 will in trigger voltage of its 7 pin output, trigger controllable silicon Q4 and make its conducting.Make immediately 10 pin of connector A1 become electronegative potential after the Q4 conducting; connection by connector A1 and 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 cut-off, first and second relay J 1 and J2 dead electricity; its contact disconnects; cut off electrical network and sent electric passage to the socket delivery outlet, electric welding machine is de-energized, and is protected.The 5th electric leakage indicator light LED5 is luminous simultaneously, and indication has the electric leakage accident to occur.Because the silicon controlled effect, earth leakage protective off-position and earth leakage protective indication are kept, until get rid of leak current fault and press reset button switch S 1 rear and removed.
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 the disappearance of random time do not occur to guarantee 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 are respectively gone here and there behind the 37,38 current-limiting resistance R37 and the R38 leakage tests push-button switch S2 by series connection with it; then draw test lead from first and second binding post TS1 and TS2; this loop is passed the magnetic core that leakage current detects instrument transformer, consists of simulation earth leakage protective test circuit.When needs detect creepage protection function whether effectively the time, click leakage tests push-button switch S2, just have weak current by test coil, so that detecting the magnetic core of instrument transformer, leakage current 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 produces pressure drop in sampling the 31 resistance R 31 after by the instrument transformer secondary winding.Integrated electricity leakage protection device U1 will in trigger voltage of its 7 pin output, trigger controllable silicon Q4 and make its conducting.Make immediately 10 pin of connector A1 become electronegative potential after the Q4 conducting; connection effect by connector A1 and 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 cut-off, first and second relay J 1 and J2 dead electricity; its contact disconnects; cut off electrical network and send electric passage to the socket delivery outlet, electric welding machine is de-energized, and is protected.The indicator light LED5 that leaks electricity simultaneously is luminous, and indication has the electric leakage accident to occur.Because the silicon controlled effect, earth leakage protective off-position and earth leakage protective indication are kept, and are removed until press reset button switch S 1 rear.
The value of the 37,38 current-limiting resistance R37 and R38 is so that the electric current that flows through is the same with earth leakage protective device leakage current limit value, so just can be when simulation test the validity of correct judgement earth leakage protective device defencive function.
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, can derive the electric welding machine protection socket of a part defencive function of this Multi-functional arc welding generator of tool protection socket.
As shown in Figure 4, this welder power protection socket only has the welder power protection socket of lightning protection function, is comprised 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 comprised 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 comprised 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 comprised of input plug 1, input lead 2, input box 4, undervoltage/overvoltage protective device 6d accessory power outlet 8 and socket support 3.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. Multi-functional arc welding generator electric power protecting socket; comprise input plug, the input lead that is 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.
2. Multi-functional arc welding generator electric power protecting socket as claimed in claim 1, it is characterized in that, described lightning arrester comprises: the first capacitor C 1, first, second protective tube F1, F2, the first amplitude limiter circuit that is connected in series with this first, second protective tube, second amplitude limiter circuit in parallel with described the first amplitude limiter circuit consists of the first parallel circuits, the second parallel circuits that the first clamp circuit in parallel, the second clamp circuit and the 3rd clamp circuit form, this first, second parallel circuits serial connection; Described the 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 form; Described the second amplitude limiter circuit is comprised of first, second Zinc-oxide piezoresistor VR1, VR2; Described the first clamp circuit is by first and second diode D1, D2, and the first resistance R 1, the first LED 1 forms; Described the second clamp circuit is by the 4th diode D4, and the second LED 2, the second resistance R 2, the three diode D3 form; Described the 3rd clamp circuit is by the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th resistance R 3, R4, R5, R6, R7, R8, the 5th, the 6th, the 7th diode D5, D6, D7, and triode Q1, the 3rd LED 3 forms.
3. Multi-functional arc welding generator electric power protecting socket as claimed in claim 2, it is characterized in that, described undervoltage/overvoltage protective device comprises: the first bridge rectifier of order serial connection, the control circuit power supply circuits, the first branch road that input signal circuit consists of, first Schmidt's voltage comparator circuit of order serial connection, the first Schmidt circuit, second Schmidt's voltage comparator circuit, the second branch road that the second Schmidt circuit consists of, connect with described the second Schmidt circuit under-voltage/overvoltage outage executive circuit, with described under-voltage/overvoltage outage executive circuit power indicating circuit in parallel, described the first branch road and the second branch circuit parallel connection; Described the 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 R 9, R11, R12, three terminal regulator Q3, and the second electrochemical capacitor E2, the second capacitor C 2 forms; Described input signal circuit is by the 13, the 14 resistance R 13, R14, the first electrochemical capacitor E1, and the 3rd capacitor C 3 forms; Described first Schmidt's voltage comparator circuit is by the 4th integrated comparator U2D, and the 15,16 resistance R 15, R16 form; Described the first Schmidt circuit is by the 17,21,22,23 resistance R 17, R21, R22, R23, triode Q2, the 13,15 diode D13, D15; Described second Schmidt's voltage comparator circuit is by by the 3rd integrated comparator U2C, and the 19,20 resistance R 19, R20 form; Described the second Schmidt circuit is by the 24,25 resistance R 24, R25, and the 14 diode D14 forms; Described under-voltage/overvoltage outage executive circuit is by the 26 resistance R 26, field effect transistor M1, first and second relay J 1, J2, the 27,28 resistance R 27, R28, the 16,17 diode D16, D17 form; Described power indicating circuit is by first, second integrated comparator U2A, U2B, the 29,30,40 resistance R 29, R30, R40, and the 4th, six, seven LEDs 4, LED6, LED7, the 4th capacitor C 4, the eight diode D8 form.
4. Multi-functional arc welding generator electric power protecting socket as claimed in claim 3, it is characterized in that, described earth leakage protective device, comprise: connector, with the second bridge rectifier that described connector is linked in sequence, 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 the second bridge rectifier is by the 7th capacitor C 7, and the inner voltage stabilizing circuit voltage stabilizing of integrated electricity leakage protection device U1 accesses leakage protection circuit; Described the second bridge rectifier is comprised of the 18,19,20,21 diode D18, D19, D20, D21; Described simulation earth leakage protective test circuit is by simulation 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 capacitor C 5, C6, C8, C9, C10, C11; the 31,32,33,34,35,36 resistance R 31, R32, R33, R34, R35, R36; the 22 diode D22; controllable silicon Q4; reset button switch S 1, the five LED 5 forms.
5. Multi-functional arc welding generator electric power protecting socket as claimed in claim 4; it is characterized in that, comprise the input box that is located at described socket support front end and be located at described socket support end accessory power outlet, be arranged on the lightning arrester between described input box and the accessory power outlet.
6. Multi-functional arc welding generator electric power protecting socket as claimed in claim 4; it is characterized in that, 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.
7. Multi-functional arc welding generator electric power protecting socket as claimed in claim 4; it is characterized in that, 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, respectively with undervoltage/overvoltage protective device and the earth leakage protective device of described input wires cassette in series.
8. Multi-functional arc welding generator electric power protecting socket as claimed in claim 4; it is characterized in that, comprise the input box that is located at described socket support front end and be located at described socket support end accessory power outlet, be arranged on the undervoltage/overvoltage protective device between described input box and the accessory power outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502519.0A CN102931544B (en) | 2012-11-30 | 2012-11-30 | Power source protection socket for multifunctional electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502519.0A CN102931544B (en) | 2012-11-30 | 2012-11-30 | Power source protection socket for multifunctional electric welding machine |
Publications (2)
| Publication Number | Publication Date |
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| CN102931544A true CN102931544A (en) | 2013-02-13 |
| CN102931544B CN102931544B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210502519.0A Expired - Fee Related CN102931544B (en) | 2012-11-30 | 2012-11-30 | Power source protection socket for multifunctional electric welding machine |
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| Country | Link |
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| CN (1) | CN102931544B (en) |
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| CN103825148A (en) * | 2013-12-10 | 2014-05-28 | 王波兰 | Wiring board device |
| CN112230695A (en) * | 2020-10-20 | 2021-01-15 | 河北格菱电磁采暖设备有限公司 | Ceramic infrared heater for aluminum-titanium alloy module boiler |
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|---|---|
| CN102931544B (en) | 2015-04-29 |
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