KR100403311B1 - Back fire elimination machine and method for brown gas - Google Patents

Abstract

The present invention relates to a brown gas flashback elimination device and method, which has a plurality of solenoid valves that can selectively block brown gas and an air compressor that can automatically shut off brown gas in order to quickly and safely prevent backfire of brown gas. A brown gas flashback elimination device, a plurality of solenoid valves and an air compressor are operated in accordance with a programmed control operation to provide a brown gas flashback prevention method capable of automatically eliminating flashback.

Description

BACK FIRE ELIMINATION MACHINE AND METHOD FOR BROWN GAS}

The present invention relates to a brown gas backfire removal apparatus and method which can be mounted on the brown gas generator to remove backfire generated when using brown gas as a heat source such as welding.

Brown gas is a gas obtained by electrolysis of water and is a mixed gas in which the content ratio of hydrogen and oxygen is 2: 1. Usually, when water is electrolyzed, hydrogen is obtained at the cathode and oxygen is obtained at the anode. Brown gas is collected at once without collecting these gases separately.

Brown gas, unlike ordinary gas, has a unique property that causes impingement during combustion. That is, it does not show an explosion phenomenon during combustion, but rather, a flame gathers inside to form a focal point and vacuum the surroundings. As a result, combustion of Brown gas can obtain ultra-high temperature enough to sublimate the tungsten, which has the highest melting point.

In addition, there is no energy loss due to radiant heat because the hot wire is not discharged to the outside, and thus has excellent energy efficiency, and since oxygen is included in itself, no separate oxygen supply is required during combustion. In addition, since only water is produced as a combustion product, there is no pollution problem.

Because of the above advantages, the Brown gas generator has been steadily improved in performance and safety and is used throughout the industry.

Generally, the brown gas generator includes an energy generator, a power supply, and an energy controller.

Then, by generating alternating induction current in the electrolytic cell which is one component of the gas generator, oxygen and hydrogen are generated, and brown gas is generated by mixing oxygen and hydrogen.

Brown gas produced as described above is stored in a safe compression vessel and used as a heat source such as welding by opening and closing the valve as necessary.

When using brown gas for such welding, welding is performed by adjusting the blowing pressure and the blowing amount of the brown gas using a torch.

However, because Brown gas has a very high flame propagation rate, backfire occurs when the flame flows back during welding. Flame backfire causes unpleasant wind noise, which makes the worker unpleasant, and the device using brown gas causes fatal defects.

The present invention is to solve the problems as described above, to protect the device using the brown gas by the backfire when using the brown gas for welding, and to improve the working environment by removing the wind noise generated during the backfire Provided is a brown gas flashback elimination device and method.

1 is a block diagram of a backfire removal apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

12: Brown gas storage tank 14: flame control tank

16: torch 18: air compressor

20: hose 1 22: hose 2

24: first solenoid valve 26: second solenoid valve

28: third solenoid valve 30: temperature sensor

32: controller

The present invention provides a brown gas storage tank for storing the brown gas produced by the brown gas generator to achieve the above object; A torch supplied with the brown gas from the brown gas storage tank and used as a heat source such as welding; A first hose connecting the brown gas storage tank and the torch to supply the brown gas of the brown gas storage tank to the torch; A flame control tank installed in the middle of the first hose and filled with a liquid flame control material so that the flame control material is mixed when the brown gas of the brown gas storage tank is supplied to the torch; A second hose branched between the brown gas storage tank and the flame control tank so that the brown gas can be supplied directly to the torch without passing through the flame control tank; It is installed at the branch of the first hose and the second hose can selectively open and close the brown gas supply line supplied from the brown gas storage tank to the flame control tank and the brown gas supply line directly supplied from the brown gas storage tank to the torch. A first solenoid valve; Brown gas backfire removal, comprising a second solenoid valve installed in the brown gas supply line between the flame control tank and the torch to selectively open and close the brown gas mixed with the flame control material to the torch. Provide the device.

In order to achieve the above object, the present invention further provides an air compressor on a first hose proximate to the torch, and opens and closes the high pressure air produced by the air compressor on an air supply line from the air compressor to the first hose. It provides a brown gas flashback prevention device further comprises a third solenoid valve capable of.

The present invention is to install a sensor that can sense the temperature or pressure in the first hose close to the torch in order to achieve the above object, the first solenoid valve and the second solenoid by receiving the detection signal detected by the sensor It provides a Brown gas flashback prevention device further comprises a controller for automatically controlling the opening and closing of the valve and the third solenoid valve.

The present invention is brown to be supplied to the flame control tank side from the brown gas storage tank by operating the first solenoid valve in the state in which the second solenoid valve is opened and the third solenoid valve is closed in order to achieve the above object. The gas supply line is opened and the second hose, which can be supplied directly from the brown gas storage tank to the torch, is closed and brown gas in the brown gas storage tank is filled in the flame control tank while passing through the flame control tank along the first hose. After mixing with the flame control material, it is supplied to the torch through the open second valve, and after the ignition is completed, the first solenoid valve is operated to close the brown gas supply line supplied from the brown gas storage tank to the flame control tank, and then closed. The second hose is opened so that brown gas can be supplied directly from the gas storage tank to the torch. It provides a brown gas backfire removal method characterized in that the brown gas in the brown gas storage tank is supplied directly to the torch through the second hose by closing the second solenoid valve to block the brown gas mixed with the flame control material from being supplied to the torch. do.

In order to achieve the above object, the present invention provides a brown gas supply line leading to a flame control tank from a brown gas storage tank, and a second solenoid valve and a third solenoid valve are also closed. Open the third solenoid valve when extinguishing in the ignition state where brown gas is supplied to the torch through the hose, extinguish it by blowing high pressure air produced in the air compressor into the torch through the first hose, and then close the first solenoid valve. It provides a brown gas backfire removal method characterized in that the brown gas is blocked from being supplied to the torch and the third solenoid valve is closed.

In order to achieve the above object, the present invention provides a brown gas supply line leading to a flame control tank from a brown gas storage tank, a second solenoid valve and a third solenoid valve are also closed, and a second hose in the brown gas storage tank. If the backfire occurs due to unstable brown gas supply due to power failure or mechanical failure in the ignition state where brown gas is supplied to the torch through the torch, the flash sensor is quickly detected by a temperature sensor close to the torch, and a detection signal is applied to the controller. The third solenoid valve is opened under the control of the controller according to the applied sensing signal, and the high pressure air is introduced into the torch through the first hose to extinguish. At the same time, the first solenoid valve is closed to the torch from the Brown gas storage tank. The third solenoid valve closes after the supplied Brown gas is shut off. Provides a Brown gas backfire removed characterized in that the.

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

As shown in FIG. 1, the brown gas backfire removal apparatus according to an embodiment of the present invention includes a brown gas storage tank, a flame control tank, an air compressor, a plurality of solenoid valves, and a gas hose and a solenoid connecting the components. It consists of a controller that can control the valve automatically.

As shown in FIG. 1, the brown gas storage tank 12 stores brown gas produced by the brown gas generator, and a flame control tank 14 is connected to the brown gas storage tank by a gas hose. In the above, the brown gas storage tank 12 is filled with a certain amount of water to prevent the worst condition such as the brown gas explosion, and the dehumidifier 34 and the pressure between the brown gas storage tank 12 and the flame control tank 14. The transmitter 36 is installed to supply only pure brown gas and maintain the supplied pressure.

The flame control tank 14 is filled with a flame control material such as nucleic acids, alcohols, ethylene, etc. in a liquid state, and the torch 16 is connected to the flame control tank 14 by the first hose 20.

In addition, a second hose 22 is installed between the brown gas storage tank 12 and the torch 16 without being connected to the flame control tank 14 and directly connected to the torch from the brown gas storage tank 12.

The first solenoid valve 24 is installed at the branch point branched from the first hose 20 to the second hose 22, and the first solenoid valve 24 is operated by a user. Only the second hose 22 may be opened and the second hose 22 may be closed or the first hose 20 may be closed and only the second hose 22 may be opened.

A second solenoid valve 26 may be installed in the first hose 20 connected to the torch 16 in the flame control tank 14 and the second solenoid valve 26 may be opened and closed by a user's operation.

An air compressor 18 is connected to the first hose 20 in the vicinity of the torch, and the second hose 22 branched from the first hose 20 is further outward from the point where the first hose 20 is coupled with the first hose 20 again. It is desirable to connect closer to the torch 16 side.

The third solenoid valve 28 may be installed in the air supply line connected from the air compressor 18 to the first hose 20, and the third solenoid valve 28 may be opened and closed by a user's operation.

In addition, the first hose 20 proximate to the torch 16 is provided with a temperature sensor 30 to detect the change in temperature during the flashing of the brown gas through the ignited torch 16 so that the temperature change is quickly detected and the controller 32. The first solenoid valve 24, the second solenoid valve 26, and the third solenoid valve 28 may be selectively opened and closed by the control of the programmed controller 32 by applying the detection signal to the controller 32. The temperature sensor for detecting backfire in the above may be used by replacing the pressure sensor.

The brown gas backfire removal method according to the present invention configured as described above is divided into ignition, extinguishing and non-uniform external conditions during operation as follows.

At the time of ignition, a predetermined time is required for the blowing pressure of the brown gas through the torch 16 to reach a constant pressure. Therefore, backfire may occur before the ejection pressure reaches the specified ejection pressure. Therefore, it is necessary to mix the flame control agent with Brown gas.

Based on the conditions described above, a brown gas backfire removal method at ignition will be described. First, the first solenoid valve 24 is operated to open the first hose 20 side and close the second hose 22 side, open the second solenoid valve 26, and supply air to the air compressor 18. The third solenoid 28 valve connected to the line is closed.

When the brown gas of the brown gas storage tank 12 flows into the flame control tank 14 along the first hose 20 by the opening of the first solenoid valve 24, the flame control material filled in the flame control tank 14. (Nucleic acid, alcohols, ethylene, and the like) are mixed with the torch 16 and ignited by the brown gas flowing out.

When the ignition is completed, the first solenoid valve 24 is operated to close the brown gas supply line on the flame control tank 14 side from the first hose 20, open the second hose 22 side, and open the second solenoid. The valve 26 is closed to prevent brown gas mixed with the flame control material through the flame control tank 14 from being supplied to the torch 16. That is, the brown gas flows directly into the torch along the second hose 22. At this time, the third solenoid valve 28 maintains the closed state.

When extinguishing, the ejection pressure may suddenly decrease and backfire may occur, so that the fire is extinguished by the high pressure air pressure using the air compressor 18 at the time of extinguishing.

When extinguishing based on the above data, the third solenoid valve 28 is opened to blow the high pressure air pressure produced by the air compressor 18 to extinguish the fire, and then the first solenoid valve 24 is closed to brown gas. The supply to the second hose 22 is blocked, and the third solenoid valve 28 is closed to block the air supply line from the air compressor 18 to the torch 16. At this time, it is obvious that the first solenoid valve 24 and the second solenoid valve 26 connected to the flame control tank 14 are in a closed state.

During operation, a backfire does not occur because it is ejected at a constant ejection pressure in consideration of backfire. The gas supply must be shut off.

When backfire occurs during operation based on the above conditions, a high temperature flame is backfired along the torch 16, and the temperature sensor 30 detects the backfire and applies a detection signal to the controller 32 for programming. The third solenoid valve 28 is opened and extinguished by blowing the high pressure air pressure produced by the air compressor 18 through the first hose 20 to the torch 16 under the control of the controller 32. The first solenoid valve 24 is closed to shut off Brown gas flowing into the torch along the second hose 22, and the third solenoid valve 28 is closed again to the torch 16 from the air compressor 18. Shut off the air supply line that follows. At this time, the first solenoid valve 24 opening and closing the brown gas supply line leading to the flame control tank 14 and the second solenoid valve 26 leading to the torch 16 from the flame control tank 14 are closed. Keep it.

As described above, according to the present invention, when the ignition is discharged, the brown gas mixed with the flame control material is prevented, and when the ignition is completed, only the brown gas is ejected, and when extinguishing, the high pressure air is blown using an air compressor. The backfire is eliminated. When the backfire occurs during operation, the backfire is removed by the control of the controller by detecting the backfire using a temperature sensor and applying the detected signal to the controller. That is, according to the present invention, backfire can be prevented quickly and safely in any situation that occurs during use of Brown gas.

Claims (6)

A brown gas storage tank storing brown gas produced by the brown gas generator; A torch supplied with the brown gas from the brown gas storage tank and used as a heat source such as welding; A first hose connecting the brown gas storage tank and the torch to supply the brown gas of the brown gas storage tank to the torch; A flame control tank installed in the middle of the first hose and filled with a liquid flame control material so that the flame control material is mixed when the brown gas of the brown gas storage tank is supplied to the torch; A dehumidifier installed on the first hose between the brown gas storage tank and the flame control tank to receive only pure brown gas from the brown gas storage tank; A pressure transmitter installed at a side of the dehumidifier on the first hose to maintain the pressure of the brown gas supplied from the brown gas storage tank; A second hose branched between the brown gas storage tank and the flame control tank so that the brown gas can be directly supplied to the torch without passing through the flame control tank; It is installed at the branch of the first hose and the second hose can selectively open and close the brown gas supply line supplied from the brown gas storage tank to the flame control tank and the brown gas supply line directly supplied from the brown gas storage tank to the torch. A first solenoid valve; Brown gas backfire removal, comprising a second solenoid valve installed in the brown gas supply line between the flame control tank and the torch to selectively open and close the brown gas mixed with the flame control material to the torch. Device. The method of claim 1, A third solenoid valve may further include an air compressor installed in the first hose proximate the torch and open and close the high pressure air produced by the air compressor in an air supply line from the air compressor to the first hose. Brown gas backfire removal device, characterized in that. The method of claim 2, A temperature sensor may be installed in the first hose proximate to the torch to open and close the first solenoid valve, the second solenoid valve, and the third solenoid valve by receiving a sensing signal detected by the temperature sensor. Brown gas flashback eliminator further comprises a controller for automatic control. When ignition, the second solenoid valve is opened and the third solenoid valve is closed, and the brown gas supply line supplied from the brown gas storage tank to the flame control tank is opened by operating the first solenoid valve, and the brown gas storage tank is opened. The second hose, which can be supplied directly to the torch from the tank, is closed and brown gas in the brown gas storage tank passes through the flame control tank along the first hose, mixed with the flame control material filled in the flame control tank, and then opened. After the ignition is completed and supplied to the torch through the solenoid valve, the first solenoid valve is operated to close the brown gas supply line from the brown gas storage tank to the flame control tank, and the brown gas is supplied directly from the brown gas storage tank to the torch. The bra mixed with the flame control material after opening the second hose to Brown gas backfire removal method characterized in that the brown gas in the brown gas storage tank is supplied directly to the torch through the second hose by closing the second solenoid valve to block the supply of uncompressed gas to the torch. The method of claim 4, wherein The brown gas supply line from the brown gas storage tank to the flame control tank is closed, the second solenoid valve and the third solenoid valve are closed, and the brown gas is supplied to the torch through the second hose from the brown gas storage tank. When extinguishing, extinguish by opening the third solenoid valve and blowing high pressure air produced by the air compressor into the torch through the first hose, and closing the first solenoid valve to block brown gas from being supplied to the torch. Brown gas backfire removal method characterized in that the solenoid valve is closed. The method of claim 4, wherein The brown gas supply line from the brown gas storage tank to the flame control tank is closed, the second solenoid valve and the third solenoid valve are closed, and the brown gas is supplied to the torch through the second hose from the brown gas storage tank. In case of backfire due to unstable brown gas supply due to power failure or mechanical failure, the flashlight is quickly detected by the temperature sensor close to the torch and the detection signal is applied to the controller. The third solenoid valve is opened to extinguish the high pressure air by entering the torch through the first hose. At the same time, the first solenoid valve is closed to block the brown gas supplied from the brown gas storage tank to the torch. Brown gas backfire, characterized in that closed How to remove.