KR101662568B1 - oxygon welding apparatus using air pressure - Google Patents

oxygon welding apparatus using air pressure Download PDF

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Publication number
KR101662568B1
KR101662568B1 KR1020160016308A KR20160016308A KR101662568B1 KR 101662568 B1 KR101662568 B1 KR 101662568B1 KR 1020160016308 A KR1020160016308 A KR 1020160016308A KR 20160016308 A KR20160016308 A KR 20160016308A KR 101662568 B1 KR101662568 B1 KR 101662568B1
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KR
South Korea
Prior art keywords
valve
oxygen
pneumatic
directional control
control valve
Prior art date
Application number
KR1020160016308A
Other languages
Korean (ko)
Inventor
박봉경
옥경석
Original Assignee
박봉경
옥경석
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Publication date
Application filed by 박봉경, 옥경석 filed Critical 박봉경
Priority to KR1020160016308A priority Critical patent/KR101662568B1/en
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Publication of KR101662568B1 publication Critical patent/KR101662568B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K5/00—Gas flame welding
    • B23K5/22—Auxiliary equipment, e.g. backings, guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/006—Safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/40—Torches, e.g. for brazing or heating for welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/52—Nozzles for torches; for blow-pipes

Abstract

The present invention relates to an oxygen welder using pneumatic pressure and supplies a constant pneumatic pressure input from a pneumatic connection port (101) connected to an oxygen tank or a nitrogen tank of a regulator (10), and a switch pneumatic valve (20) And supplies the air pressure to the first directional control valve 30. [ The first directional control valve 30 supplies the pneumatic pressure supplied through the switch pneumatic valve 20 to the oxygen valve 60 and the second directional control valve 50, The air pressure supplied from the first direction control valve 30 is supplied to the second directional control valve 50 with a predetermined time delay. The second directional control valve 50 supplies the air pressure supplied from the switch pneumatic valve 20 to the combustion gas valve when the air pressure is supplied from the timer valve 40 so that the combustion gas valve 70 is connected to the combustion gas tank And the oxygen valve 60 is configured to supply the oxygen in the oxygen tank to the torch when the air is supplied from the first directional control valve 30 so as to supply oxygen to the oxygen tank, It is possible to control the oxygen valve and the combustion gas valve by using the pressure of the nitrogen tank or the combustion gas tank so that the explosion phenomenon does not occur when the welding machine is turned on and off.

Description

[0001] The present invention relates to an oxygen welding apparatus using air,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen welding machine using a pneumatic pressure, and more particularly, to a welding machine using a pneumatic pressure such as a commercial power supply oxygen tank or a nitrogen tank, To an oxygen welder using air pressure improved to prevent explosion.

1, the brazing torch device includes a gas hose 120 and an oxygen hose 130 connected to oxygen and acetylene from an oxygen tank 150 and an acetylene tank 6 to a gas saver 140 The supplied oxygen and acetylene are saved and then supplied to the brazing torch 110 through the respective gas hoses 120 and the oxygen hose 130 and the oxygen supplied to the brazing torch 110 and the acetylene Are mixed at a constant rate by the gas mixer 170 mounted in the brazing torch 110 and then injected into the furnace of the brazing torch 110.

An oxygen solenoid valve 141 and a gas solenoid valve 142 are installed inside the gas saver 140 to control the microcomputer 144 and oxygen and acetylene in the gas saver 140 and an on / The microcomputer 144 controls the oxygen solenoid valve 141 and the gas solenoid valve 142 to be in the OFF state and the oxygen supplied to the brazing torch 110 is supplied to the brazing torch 110. [ And the acetylene gas is shut off and the brazing torch 110 is removed from the torch hanger 143, the microcomputer 144 controls the oxygen solenoid valve 141 and the gas solenoid valve 142 to be turned on and supplies the gas to the brazing torch 110 Oxygen and acetylene gas are supplied again.

An igniter 142 is installed on the upper surface of the gas saver 140 and a transformer (not shown) for supplying a high pressure to the igniter 142 is connected to a power line to ignite the crater of the brazing torch 110.

Since the power line is connected to the gas saver 140, there is an inconvenience that the welder can not be used in a place where there is no commercial power source, and there is an inconvenience that the power line must be extended to an outlet that can be connected to a commercial power source.

Korean Registered Patent No. 10-0450493 (registered on September 17, 2004) Korean Patent Publication No. 10-0524191 (registered October 20, 2005)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of controlling an oxygen valve and a combustion gas valve using pressure of an oxygen tank, a nitrogen tank or a combustion gas tank, The pneumatic circuit is constructed so that the welding operation can be performed in a place where it is not supplied to the commercial power supply and the pneumatic circuit is configured so that the oxygen valve is blocked first so that the explosion phenomenon does not occur when the welding machine is turned on and off. .

According to an aspect of the present invention, there is provided an oxygen welder using pneumatic pressure according to the present invention, comprising: a micro switch which is turned on when a blazing torch is removed from a torch hanger; A remote control transmitting and receiving unit for transmitting and receiving a remote control signal from a remote control; An ignition device for igniting the combustion gas discharged from the blazing torch; An oxygen valve for supplying a predetermined amount or more of oxygen until a predetermined time after the blazing torch is lit, and supplying a predetermined amount or less of oxygen after a predetermined time; A combustion gas valve for supplying a combustion gas at a predetermined amount or more until a predetermined time after the blazing torch is ignited and supplying a combustion gas at a predetermined amount or less after a predetermined time; A gas alarm for detecting and alarming leakage of the combustion gas; An oxygen pressure sensor for sensing oxygen pressure; A combustion gas pressure sensor for sensing the combustion gas pressure; A nitrogen pressure sensor for sensing nitrogen pressure; An impact sensor for detecting an impact; A welding object sensor for sensing a welding object; And a controller for controlling the oxygen valve, the combustion gas valve, and the nitrogen gas valve to be turned on to supply oxygen and a combustion gas at a high pressure to the blazing torch, A microcomputer for controlling the temperature of the flame generated in the blazing torch by controlling the oxygen gas and the combustion gas to be supplied at a reduced rate; A gas alarm for alerting a gas leakage according to a gas leakage alarm signal output from the microcomputer; A display for displaying information related to the welding machine according to a display signal such as a battery voltage output from the microcomputer; And a battery voltage meter for measuring a voltage of a battery supplying power.

In the method of controlling an oxygen welder using pneumatic pressure according to the present invention, if the microswitch is on, the ignition transformer, the oxygen valve, and the nitrogen valve are turned on, and after a certain time after the oxygen valve is turned on, State; When the nitrogen pressure, the oxygen pressure, and the combustion gas pressure are not within the predetermined ranges, the oxygen pressure sensor, the oxygen pressure sensor, and the combustion gas pressure sensor are turned off to terminate the welding Wow; Closing the oxygen valve, the nitrogen valve, and the combustion gas valve when the welding object is not detected from the welding object sensor or an impact is detected from the impact sensor; When the nitrogen pressure, oxygen pressure, and combustion gas pressure are within the set range, the ignition transformer, the oxygen valve, the nitrogen valve, and the combustion gas valve are turned on for the respective set time period from the nitrogen pressure sensor, the oxygen pressure sensor, ; Keeping the ignition transformer, the oxygen valve, the nitrogen valve and the fuel gas valve ON for each set time, and then keeping only one of the two valves of the oxygen valve, the nitrogen valve and the combustion gas valve ON; Receiving a battery voltage from a battery voltmeter and determining whether the battery voltage is equal to or higher than a set voltage; Displaying a battery voltage lower than a set voltage when the battery voltage is lower than a set voltage and generating an alarm sound; Setting the oxygen valve, the nitrogen valve and the combustion gas valve to the ON state for each set time when the microswitch is in the OFF state, and turning off the combustion gas valve after a certain period of time after the oxygen valve is turned OFF .

As described above, the pneumatic oxygen welding machine according to the present invention uses a pneumatic circuit to control the oxygen valve and the combustion gas valve by using the pressure of the oxygen tank, the nitrogen tank, or the combustion gas tank, It is possible to prevent the explosion phenomenon when the welding machine is turned on and off by configuring the pneumatic circuit so that the welding operation is possible where the commercial power is not supplied and the oxygen valve is blocked first.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an oxygen welding machine according to a conventional technique,
2 is a block diagram showing a configuration of an oxygen welding machine using pneumatic pressure according to the present invention,
3 is a pneumatic circuit diagram showing a state in which the switch pneumatic valve according to the present invention forms a flow path to supply air pressure,
4 is a pneumatic circuit diagram showing a state in which a second directional control valve according to the present invention receives a signal by a timer circuit to form a flow path and supplies a pneumatic pressure to the combustion gas valve.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 shows a pneumatic circuit diagram of an oxygen welder using pneumatic pressure according to the present invention. Fig. 3 shows a pneumatic circuit diagram showing a state in which a switch pneumatic valve according to the present invention forms a flow path to supply pneumatic pressure. There is shown a pneumatic circuit diagram showing a state in which a second directional control valve according to the present invention receives a signal by a timer circuit to form a flow path and supplies a pneumatic pressure to the combustion gas valve.

The oxygen welder 100 using the pneumatic pressure according to the present invention includes a regulator 10 which is composed of a filter, a pressure reducing valve, and a lubrication apparatus and which is fed from a pneumatic connection 101 connected to an oxygen tank or a nitrogen tank, )Wow; A switch pneumatic valve (20) for shutting off or supplying the air pressure supplied from the regulator (10); A first directional control valve 30 for supplying a pneumatic pressure supplied through the switch pneumatic valve 20 to the oxygen valve 60 and the second directional control valve 50; A timer valve (40) for delaying the air pressure supplied from the first directional control valve (30) by a time, for example, 10 seconds and supplying the delayed air to the second directional control valve (50); A second directional control valve (50) for supplying the air pressure supplied from the switch pneumatic valve (20) to the combustion gas valve (70) when air pressure is supplied from the timer valve (40); An oxygen valve 60 for supplying oxygen in the oxygen tank to the torch when air pressure is supplied from the first directional control valve 30; And a combustion gas valve 70 connected to the switch pneumatic valve 20 by the second directional control valve 50 to receive pneumatic pressure and to supply a combustion gas of a combustion gas tank such as LPG to the torch .

The regulator 10 according to the present invention includes a filter, a pressure reducing valve, and a lubricating device. The regulator 10 is connected to an oxygen tank, a nitrogen tank, or the like to constantly maintain the pneumatic pressure input from the pneumatic connection 101, To the valve (20).

A check valve 11 is provided between the regulator 10 and the switch pneumatic valve 20 so that the pneumatic pressure supplied from the regulator 10 to the switch pneumatic valve 20 is prevented from flowing backward.

The switch pneumatic valve 20 is composed of a two-port two-way valve and is connected to a toggle switch or the like for turning on and off the oxygen welder 100 according to the present invention to shut off the pneumatic pressure supplied from the regulator 10, (30).

When the lever provided on the left side of the switch pneumatic valve 20 is operated, the elastic force of the spring is overcome and the input port and the output port are connected to each other to form a flow path to the first directional control valve 30 and the second directional control valve 50 Pneumatic is supplied.

 When the torch is removed from the torch hanger, the first directional control valve 30 operates and is supplied to the oxygen valve 60 to be turned on The oxygen is supplied to the torch and simultaneously the pneumatic pressure is supplied to the timer valve 40. When the set time has elapsed, the port 1 and the port 2 are connected to supply the pneumatic pressure to the second directional control valve 50.

When the torch is removed from the torch hanger, the timer valve 40 delays the air pressure supplied through the first directional control valve 30 for a predetermined time, for example, 10 seconds, So that a pneumatic signal is applied to the valve (50).

The second directional control valve 50 applies an open signal to the combustion gas valve 70 when a pneumatic signal is applied from the timer valve 40 so that the combustion gas valve 70 is opened and the combustion gas stored in the combustion gas tank .

Therefore, after the oxygen valve 60 is opened and oxygen has been supplied from the oxygen tank to the torch for a certain period of time (for example, 10 seconds), the second directional control valve 50 opens the combustion gas valve 70 And the combustion gas stored in the combustion gas tank is supplied to the torch, thereby preventing explosion.

When the torch is removed from the torch hanger, the oxygen valve 60 receives a pneumatic signal through a first directional control valve 30 that forms a flow path, and supplies oxygen stored in the oxygen tank to the torch to supply oxygen necessary for the welding operation .

The combustion gas valve 70 is supplied with a pneumatic signal through the first directional control valve 30 operated by the timer valve 40 and supplies a combustion gas such as LPG stored in the combustion gas tank to the torch, And supplies the combustion gas.

Hereinafter, the operation and effect of the oxygen welding machine using the pneumatic pressure according to the present invention will be described.

The oxygen welder using the pneumatic pressure according to the present invention supplies pneumatic pressure to the pneumatic connection port 101 connected to an oxygen tank or a nitrogen tank at a place where no electric power is supplied to open the oxygen valve 60 for a predetermined time 10 seconds, etc.), the combustion gas valve 70 is opened to prevent explosion due to unbalance between oxygen and combustion gas.

The pneumatic pressure supplied through the pneumatic connecting port 101 is reduced by the pressure reducing valve so as to have a constant pneumatic pressure in the regulator 10 and the moisture in the pneumatic pressure is removed by the filter and is supplied through the lubrication device and the check valve 11 to the switch pneumatic valve 20.

The pneumatic pressure supplied to the switch pneumatic valve 20 is cut off by the switch pneumatic valve 20 and when the operator turns on the toggle switch connected to the switch pneumatic valve 20, The air pressure is supplied to the first directional control valve 30 and the second directional control valve 50 by the operation of the lever of the second directional control valve 20 to form a flow path.

The first directional control valve 30 is connected to the torch hanger and the first directional control valve 30 does not operate unless the torch is removed from the torch hanger and thus the oxygen valve 60 and the timer valve 40 are closed, And the second directional control valve 50 do not operate.

 When the torch is removed from the torch hanger, a flow path is formed as shown in FIG. 4, a signal is applied to the oxygen valve 60 through the first directional control valve 30 to open the oxygen valve 60, The air pressure is supplied to the second directional control valve 50 through the three ports of the timer valve 40 after a lapse of a predetermined time (for example, 10 seconds).

The second directional control valve 50, which receives the air pressure through the three ports of the timer valve 40, forms a flow path so that the pneumatic pressure supplied from the switch pneumatic valve 20 is applied to the combustion gas valve 70, The valve 70 opens when the oxygen valve 60 has elapsed after a certain time has elapsed, and supplies the combustion gas stored in the combustion gas tank to the torch.

3, the flow path of the first directional control valve 30 is shut off and the signal is not applied to the oxygen valve 60 through the first directional control valve 30 The oxygen valve 60 is shut off so that the oxygen is firstly interrupted in the torch and the air pressure is not applied to the timer valve 40 and the second directional control valve 50 so that the combustion gas valve 70 is closed by the oxygen valve 60, So that the combustion gas is not supplied to the torch.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: Regulator 11: Check valve
20: switch pneumatic valve 30: first directional control valve
40: timer valve 50: second direction control valve
60: oxygen valve 70: combustion gas valve
100: Oxygen welding machine using pneumatic

Claims (4)

A regulator for constantizing the pneumatic pressure input from the pneumatic connection connected to the oxygen tank or the nitrogen tank;
A switch pneumatic valve for shutting off or supplying the air pressure supplied from the regulator;
A first direction control valve for supplying a pneumatic pressure supplied through the switch pneumatic valve to an oxygen valve and a second directional control valve;
A timer valve for delaying the air pressure supplied from the first directional control valve by a predetermined time and supplying the air to the second directional control valve;
A second directional control valve for supplying the air pressure supplied from the switch pneumatic valve to the combustion gas valve when air pressure is supplied from the timer valve;
An oxygen valve for supplying oxygen to the torch when oxygen is supplied from the first directional control valve;
And a combustion gas valve connected to the switch pneumatic valve and the flow path by the second directional control valve to receive the pneumatic pressure and to supply the combustion gas of the combustion gas tank to the torch. The method according to claim 1,
Wherein the switch pneumatic valve is constituted by a two-port two-way valve and is connected to a toggle switch for turning on or off the oxygen welder so as to cut off the air pressure supplied from the regulator or supply the air to the first directional control valve. Oxygen welder. 3. The method according to claim 1 or 2,
When the torch is removed from the torch hanger, the first directional control valve operates to supply the oxygen valve to the on-state, Wherein air is supplied to the timer valve and air pressure is supplied to the second directional control valve after a predetermined time has elapsed in the timer valve. 3. The method according to claim 1 or 2,
Wherein when the torch is removed from the torch hanger, the timer valve is configured to apply a pneumatic signal to the second directional control valve after delaying the air pressure supplied through the first directional control valve for a predetermined period of time. welding machine.
KR1020160016308A 2016-02-12 2016-02-12 oxygon welding apparatus using air pressure KR101662568B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160016308A KR101662568B1 (en) 2016-02-12 2016-02-12 oxygon welding apparatus using air pressure

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Application Number Priority Date Filing Date Title
KR1020160016308A KR101662568B1 (en) 2016-02-12 2016-02-12 oxygon welding apparatus using air pressure

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KR101662568B1 true KR101662568B1 (en) 2016-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102137208B1 (en) 2020-05-15 2020-07-23 이건재 Oxyzen welding and cutting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100450493B1 (en) 2001-10-29 2004-10-01 정창규 Torch device for gas flame brazing
KR100524191B1 (en) 2003-04-23 2005-10-26 박봉경 Vise helping for brazing
KR101583481B1 (en) * 2015-02-16 2016-01-08 이창희 Welding Device For Fuel Gas Economizer Type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100450493B1 (en) 2001-10-29 2004-10-01 정창규 Torch device for gas flame brazing
KR100524191B1 (en) 2003-04-23 2005-10-26 박봉경 Vise helping for brazing
KR101583481B1 (en) * 2015-02-16 2016-01-08 이창희 Welding Device For Fuel Gas Economizer Type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102137208B1 (en) 2020-05-15 2020-07-23 이건재 Oxyzen welding and cutting device

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