CN1045364A - Portable emergency electric welder - Google Patents
Portable emergency electric welder Download PDFInfo
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- CN1045364A CN1045364A CN 89108630 CN89108630A CN1045364A CN 1045364 A CN1045364 A CN 1045364A CN 89108630 CN89108630 CN 89108630 CN 89108630 A CN89108630 A CN 89108630A CN 1045364 A CN1045364 A CN 1045364A
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Abstract
Portable emergency electric welder, its primary structure are made of dc source, current-sharing transformer, electronic converter circuit system, power on/off control circuit and cell voltage holding circuit.Be characterized in adopting the 24V direct current as power supply, supply the usefulness of welding after boosting by electronic inverter and transformer, thereby solved in the emergent Welding Problems of special occasions.Security is good because the present invention adopts the dc low-voltage storage battery power supply.Because its volume I is carried,, be badly in need of weld job and the place of AC-less power as small fishing vessel, field work, military installations etc. so adaptation is wide.So the present invention is a kind of practical novel portable emergency electric welder that is suitable for.
Description
Portable emergency electric welder of the present invention is a kind of by the light emergent portable electric welding machine of 24 volts of direct currents as power supply.
Present institute's electric welding machine of producing and using, general all is the electric welding machine of being powered by AC network, this electric welding machine have poor stability, volume greatly, problem such as not portable, cost height.Especially in the field of AC-less power, some special occasions such as small fishing vessel all can't adopt this electric welding machine to implement welding job.At existing problem in the prior art, design a kind of novel and portable electric welding machine by DC power supply.Thereby the needs that solve in the emergent welding of special occasions are very necessary.
In view of existing problem in the above-mentioned prior art, the objective of the invention is to design a kind of novel structure, portable emergency electric welder advanced in performance, cheap, easy to carry.The present invention adopts dc source, current-sharing transformer, electronic converter circuit system, power on/off control circuit and cell voltage holding circuit to make a kind of novel electric welding machine.Main feature of the present invention is to adopt direct current as power supply, supplies the usefulness of welding after boosting by transformer, thereby has solved in the emergent Welding Problems of special occasions.Because the present invention adopts dc low-voltage pressure accumulation pond power supply,, there is not Danger Electric shock risk so it is good to have a security.Because its volume is little, can carry so adaptation is wide, can be used for the place and the occasion of AC-less power.Be badly in need of weld job and the place of AC-less power as small fishing vessel, field work, military installations etc.So the present invention is a kind of practical novel portable emergency electric welder that is suitable for.
The present invention is a kind of portable emergency electric welder, its feature as shown in drawings, the present invention is made up of the electronic converter circuit system of dc source, current-sharing transformer and high power transistor or FET power output.Current-sharing transformer of the present invention is made up of transformer, transistor and the affiliated circuit that contains electric capacity, can effectively make the output current equilibrium in parallel of many high power transistors.The electronic converter circuit system has vibration and integrated package NE556, the stable-pressure device of inverter functionality by one and contains high power transistor or promotion circuit, the power amplification circuit of FET are formed.This Circuits System mainly becomes the direct current of 24V the alternating current of 700HZ, rises to 55V by transformer again and uses for welding.Power on/off control circuit and cell voltage holding circuit are equipped with in the present invention.The power on/off control circuit has the integrated package NE556 of the higher-order of oscillation and not circuit, two relay J by one
1, J
2And the bleeder circuit, the delay amplification circuit that contain transistor, diode and resistance, electric capacity are formed.This circuit mainly is a control electric welding machine automatic power on-off.When welding rod contacts with workpiece, welding machine connects power supply automatically, in 5 seconds after having welded the welding rod of living to leave workpiece, welding machine cuts off the power supply automatically.Cell voltage holding circuit of the present invention has the integrated package NE556 of constant pressure switch effect, three relay J by one
3, J
4, J
5, transistor, diode and the affiliated circuit that contains resistance, electric capacity form.The effect of this circuit is when cell voltage is lower than 21V or is higher than 30V, and electric welding machine will quit work automatically.
Present widely used electric welding machine all is to be powered by the 50HZ AC network.Such electric welding machine poor stability has the danger of electric shock, and simultaneously because volume is more portable, thereby use in the place that can only be limited in AC power.And portable emergency electric welder of the present invention has overcome above-mentioned problem, can replenishing as existing electric welding machine.The present invention is the usefulness of welding after adopting the 24V direct current to boost by transformer as power supply, so adaptation is wide, security good.The 24V dc source can adopt storage battery or battery.Operating frequency of the present invention can determine according to actual conditions, the general work scope between 500HZ～1000HZ, thereby reduce the weight and volume of electric welding machine greatly, about about 10 kilograms of its weight.In addition, because its volume is little,, increased the flexibility of using so the length of handgrip line can shorten greatly.Because the present invention adopts DC power supply, so increased its scope of application.The present invention can be used for special occasions such as marine small fishing vessel and field work, thereby can implement welding job to some equipment easily.The present invention has that volume is little, in light weight, cost is low, convenient, flexible, characteristics such as be easy to carry.So the present invention is a kind of wide emergency electric welder that adapts to, and has positive social benefit and good economic benefit.
Accompanying drawing of the present invention is the portable emergency electric welder circuit system figure.
Specific embodiments of the invention as shown in drawings, its operation principle is as follows:
1, governor circuit system specialization.
This circuit is made up of 24V dc source, electronic converter circuit system, current-sharing transformer.Its effect is the alternating current that the direct current of 24V is become 700HZ, rises to the usefulness of 55V for welding by transformer again.The E-communication Circuits System mainly is made of electronic oscillating circuit, promotion circuit and power amplification circuit.Its oscillating part is to be served as by integrated package GT1, (NE556), the same C1 of its left-half, W2, W1 constitute the square-wave oscillator of 700HZ, its right half part is a phase inverter, thereby make C5, C6 two electric capacity by frequency equates, phase place is opposite AC square wave current, it is again through BG1, BG2 emitter follower, two groups of triodes in parallel of promotion BG4～BG15, make the secondary generation 700HZ of B1 driving transformer square-wave voltage, promote BG16～BG27 large power triode by this voltage, make it work on off state, with driving transformer B2.Form current-sharing transformer by transformer B1 and transformer B2 and High-power Semiconductor Triode BG16～BG27 and capacitor C 18～C29, its role is to effectively to make the current balance of many high power transistors output in parallel.
2, power on/off control circuit explanation.
This circuit mainly is a control electric welding machine automatic power on-off.When welding rod contacted with workpiece, electric welding machine was connected power supply automatically, and in 5 seconds after having welded the welding rod of living to leave workpiece, welding machine cuts off the power supply automatically, and this circuit mainly is made of oscillator, bleeder circuit and delay amplification circuit and relay etc.Oscillator is by integrated package GT2(NE556) right half part and C10, W5, W4 serve as, and produces the high frequency voltage of 100KHZ.This voltage connects by C11 on the secondary coil of transformer B2 (XX connects B2 secondary coil two ends in the accompanying drawing), again by C12, R8 ground connection.In this loop since C11, C12 value big (0.01 μ F) very little to the capacitive reactance of 100KHZ electric current, can ignore, so its voltage mainly lands on B2 secondary coil (induction reactance is bigger) and R8, suitable choose R8 produces it after the D4 rectification the unlikely BG29 of the making conducting of DC voltage, when welding rod contacts with workpiece, 2 short circuits of X, X, the voltage of 100KHZ is high-fall substantially on R8 like this, and this voltage is through D4
Enough make the BG29 conducting behind the stream.Thereby make the GT2 right-hand part be in one state, make the BG30 conducting by R11, relay J 2 adhesives, thereby engage relay J5 coil make the electric welding machine energising.
The circuit of outage part is made of bleeder circuit and delay amplification circuit.Output X, X by transformer constitute the loop through D3, D2, R7, R8, C12.When welding work pieces, the XX end has the alternating voltage of 20～25V700HZ, but because D2 is a voltage-stabiliser tube in this loop, its breakdown voltage is 20～30V, so this moment, the XX terminal voltage was passed through D3
The not enough magnitude of voltage that punctures D2 in stream back, so no current flows through in the loop, the last absence of voltage of R7.But after weldering finished piece(s) welding rod leaves workpiece, on the XX end 55V alternating voltage is nearly arranged, this voltage is after the D3 rectification, constitute the loop through D2, R7, R8, C12, the direct current pressure drop of 10V is nearly arranged on the R7, this voltage charges to C9 through W3, is charged to 6V to puncture D1(voltage stabilizing value when above be 6V when C9 goes up voltage) make the BG28 conducting.Relay J 1 adhesive, thus make relay J 5 outages turn-off electric welding machine.
3, cell voltage holding circuit explanation.
The main effect of this circuit is to cross when cell voltage low promptly to be lower than 21V or cell voltage is too high when promptly being higher than 30V, and welding machine will quit work automatically.This circuit is by forming in the elements such as integrated package GT3 and relay J 3, J4, J5 and transistor.The left-half of integrated package GT3 is to have low pressure limiting defencive function.The A mouth connects output end of pressure-stabilizing, and by R16 and R15 dividing potential drop, making GT3 two pin voltages is about 6V, so its value greater than 4V, then is zero output, is " 1 " output less than 4V.And the 24V cell voltage is by R12 and W6 dividing potential drop, and adjusts W6, makes that W6 center total voltage is 4V just when cell voltage is 21V.So GT3 is output as " 1 " when cell voltage is lower than 24V, make the BG31 conducting, thereby relay J 3 adhesives make relay J 5 coil losing electricities, welding machine has a power failure automatically.High voltage protection is served as by integrated package GT3 right half part, and its operation principle is identical with under-voltage protection.
Claims (6)
1, a kind of portable emergency electric welder is characterized in that being made up of the electronic converter circuit system of dc source, current-sharing transformer and high power transistor or the output of FET power.
2, current-sharing transformer according to claim 1 is characterized in that being made up of transformer, transistor and the affiliated circuit that contains electric capacity, can effectively make the output current equilibrium in parallel of many high power transistors.
3, electronic converter circuit according to claim 1 system is characterized in that by integrated package, stable-pressure device with vibration and inverter functionality and contains high power transistor or promotion circuit, the power amplification circuit of FET are formed.
4, portable emergency electric welder according to claim 1 is characterized in that being equipped with power on/off control circuit and cell voltage holding circuit.
5, power on/off control circuit according to claim 4 is characterized in that by the integrated package with the higher-order of oscillation and not circuit, relay and contains transistor and resistance, the bleeder circuit of electric capacity, delay amplification circuit are formed.
6, cell voltage holding circuit according to claim 4 is characterized in that being made up of the integrated package with constant pressure switch effect, relay, transistor, diode and the affiliated circuit that contains resistance, electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108630 CN1045364A (en) | 1989-11-16 | 1989-11-16 | Portable emergency electric welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108630 CN1045364A (en) | 1989-11-16 | 1989-11-16 | Portable emergency electric welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1045364A true CN1045364A (en) | 1990-09-19 |
Family
ID=4857652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108630 Pending CN1045364A (en) | 1989-11-16 | 1989-11-16 | Portable emergency electric welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045364A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870026A (en) * | 2010-06-02 | 2010-10-27 | 张芝仁 | Pure direct current arc welder |
| US7838797B2 (en) | 2004-06-01 | 2010-11-23 | Illinois Tool Works Inc. | Fuel saving engine driven welding-type device and method of use |
| US8080761B2 (en) | 2004-08-17 | 2011-12-20 | Lincoln Global, Inc. | Hybrid powered welder |
| CN103128425A (en) * | 2012-11-30 | 2013-06-05 | 浙江容大电力工程有限公司 | Portable electric welding machine |
| CN101743087B (en) * | 2007-08-31 | 2013-07-31 | 霍伯特兄弟公司 | Portable battery powered welder |
-
1989
- 1989-11-16 CN CN 89108630 patent/CN1045364A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7838797B2 (en) | 2004-06-01 | 2010-11-23 | Illinois Tool Works Inc. | Fuel saving engine driven welding-type device and method of use |
| US8791388B2 (en) | 2004-06-01 | 2014-07-29 | Illinois Tool Works Inc. | Hybrid welding-type power source |
| US8841583B2 (en) | 2004-06-01 | 2014-09-23 | Illinois Tool Works Inc. | Hybrid welder |
| US9278403B2 (en) | 2004-06-01 | 2016-03-08 | Illinois Tool Works Inc. | Power source with rechargeable energy storage device |
| US9925614B2 (en) | 2004-06-01 | 2018-03-27 | Illinois Tool Works Inc. | Power source with rechargeable energy storage device |
| US10661375B2 (en) | 2004-06-01 | 2020-05-26 | Illinois Tool Works Inc. | Hybrid welding-type power source |
| US8080761B2 (en) | 2004-08-17 | 2011-12-20 | Lincoln Global, Inc. | Hybrid powered welder |
| CN101743087B (en) * | 2007-08-31 | 2013-07-31 | 霍伯特兄弟公司 | Portable battery powered welder |
| CN101870026A (en) * | 2010-06-02 | 2010-10-27 | 张芝仁 | Pure direct current arc welder |
| CN103128425A (en) * | 2012-11-30 | 2013-06-05 | 浙江容大电力工程有限公司 | Portable electric welding machine |
| CN103128425B (en) * | 2012-11-30 | 2015-09-23 | 浙江容大电力工程有限公司 | Portable electric welder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |