KR101868923B1 - A Torch for Oxyacetylene cutting machine comprising a gas leak alarm equipment - Google Patents

Abstract

The present invention relates to a portable terminal comprising: a body portion; An oxygen tube connected to one side of the body part; A fuel gas pipe connected to one side of the body portion and spaced apart from the oxygen pipe; A nozzle unit connected to the oxygen pipe and the fuel gas pipe; And a gas leakage alarm device attached to at least one of the oxygen pipe and the fuel gas pipe. The user can confirm whether or not the valve is locked through the gas leakage alarm device, The user can recognize whether the gas is leaking through the alarm sound.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a torch for an oxygen cutter including a gas leakage alarm device,

The present invention relates to a torch for an oxygen cutter including a gas leakage alarm device, and more particularly, to a torch for an oxygen cutter including a gas leakage alarm device for checking whether gas is leaked from an oxygen cutter used for welding and cutting .

Generally, an apparatus for cutting or welding steel products by jetting a high temperature flame and oxygen at the same time is referred to as an oxygen cutter (or gas cutter).

The oxygen cutter injects the flame in which the gaseous fuel is burned, and the metal is melted / cut by supplying oxygen at a high speed in the state of preheating the metal by the gas flame at 800 to 900 ° C.

At this time, the gas and oxygen, which are the fuel of the oxygen cutter, are respectively stored in a state of being compressed in a predetermined tank, and are supplied to the torch of the oxygen cutter through hoses, respectively. The fuel injection control valve provided in the torch is operated, do.

1 is a schematic view showing a general oxygen cutter.

1, a general oxygen cutter C includes a torch T for discharging a flame and oxygen for cutting, a fuel gas reservoir G for storing fuel gas, an oxygen reservoir O for storing oxygen, And a hose (H) for supplying a fuel gas and oxygen of the oxygen storage container (O) to the torch (T).

The fuel gas reservoir G, the oxygen reservoir O and the torch T are connected to the connection ports 30 at both side ends of the hose H, The supply hose G1 (G2) and the oxygen supply hose O1 (O2) can be fastened.

The oxygen cutter is one of the equipment used in many industrial fields because of the efficiency of the equipment and simplicity that can be used by unskilled people.

However, due to the nature of the equipment, the user does not lock the valve securely because it performs the work several times in a short time.

In other words, when the oxygen cutter is not used, it is possible to reliably prevent the leakage of oxygen or gas by locking the valve. However, when the valve is not locked, oxygen or fuel gas is continuously leaked through the nozzle of the torch .

Therefore, safety accidents such as gas explosion frequently occur due to leakage of such oxygen or fuel gas.

Korean Patent No. 10-1632064

An object of the present invention is to provide an oxygen cutter including a gas leakage alarm device that allows a user to recognize a warning sound when the user can not completely shut off the valve of the oxygen cutter due to the hall alone have.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to solve the above-mentioned problems, An oxygen tube connected to one side of the body part; A fuel gas pipe connected to one side of the body portion and spaced apart from the oxygen pipe; A nozzle unit connected to the oxygen pipe and the fuel gas pipe; And a gas leakage alarm device attached to at least one of the oxygen pipe and the fuel gas pipe.

Further, the present invention is characterized in that the oxygen pipe includes a first oxygen pipe connected to the nozzle unit, and a second oxygen pipe spaced apart from the first oxygen pipe and connected to the body part, Is connected to one end of the first oxygen pipe and one end of the second oxygen pipe.

The fuel gas pipe may further include a first fuel gas pipe connected to the nozzle unit and a second fuel gas pipe located apart from the first fuel gas pipe and connected to the body part, Provides a torch for an oxygen cutter connected to one end of the first fuel gas pipe and one end of the second fuel gas pipe.

The gas leakage alarm device may further include: a main pipe connected to one end of the first oxygen pipe and connected to one end of the second oxygen pipe; A branch pipe branched from the main pipe; And an alarm unit connected to the branch pipe.

The gas leakage alarm device may further include: a main pipe connected to one end of the first fuel gas pipe and connected to one end of the second fuel gas pipe; A branch pipe branched from the main pipe; And an alarm unit connected to the branch pipe.

The alarm unit may further include: a housing; A gas inlet located at one side of the housing; A slit port located on the other side of the housing; A blocking wall in which the slit is located; And a partition wall extending from the blocking wall and defining an inner space of the housing.

According to the present invention, the partition wall has a cylindrical shape, the one side region includes a closed portion connected to the blocking wall, and the other side region includes an opening positioned in the inner space of the housing, The internal space of the housing is partitioned into an internal space of the partition located inside the partition and an external space of the partition located outside the partition with reference to the partition, the interior space of the partition being communicated with the slit, And the outer space of the partition wall does not communicate with the slit orifice.

Further, in the present invention, the alarm unit may include a gas flow control unit for opening and closing the opening of the partition, the gas flow control unit may include: a blocking plate for opening and closing the opening of the partition; A support connected to the blocking plate; And an elastic member located in the inner space of the partition wall, one side area connected to the support part and the other side area connected to the blocking wall.

According to the present invention as described above, the user can confirm whether the valve is locked or not through the gas leakage alarm device, so that even if the user is careless, the user can recognize the leakage of the gas through the alarm sound.

1 is a schematic view showing a general oxygen cutter.
FIG. 2 is a schematic view showing an oxygen cutter according to the present invention, and FIG. 3 is a schematic view showing an oxygen cutter in a state in which a gas leakage alarm device is disconnected.
4 and 5 are schematic perspective views showing a gas leakage alarm device according to the present invention.
Figures 6 and 7 are schematic cut-away views showing an alarm part according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. &Quot; and / or "include each and every combination of one or more of the mentioned items. ≪ RTI ID = 0.0 >

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" And can be used to easily describe a correlation between an element and other elements. Spatially relative terms should be understood in terms of the directions shown in the drawings, including the different directions of components at the time of use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

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

Fig. 2 is a schematic view showing an oxygen cutter according to the present invention, and Fig. 3 is a schematic view showing an oxygen cutter with a gas leakage alarm device in a separated state. In FIGS. 2 and 3, only the torch portion of the oxygen cutter is shown for convenience of explanation, and the configuration of the oxygen cutter as a whole can be referred to FIG. 1 described above.

Referring to FIGS. 2 and 3, the oxygen cutter 100 according to the present invention, more specifically, the torch portion 100 of the oxygen cutter includes a body portion 110; An oxygen pipe 120 connected to one side of the body 110; A fuel gas pipe 130 connected to one side of the body 110 and spaced apart from the oxygen pipe 120; And a nozzle unit 140 connected to the oxygen pipe 120 and the fuel gas pipe 130.

That is, the nozzle unit 140 receives oxygen and fuel gas from the oxygen pipe 120 and the fuel gas pipe 130, respectively, and simultaneously blows out a high-temperature flame and oxygen to cut or weld the iron pipes .

The torch portion 100 of the oxygen cutter includes a first valve 111 and a second valve 112 located between the body 110 and the oxygen pipe 120 and the fuel gas pipe 130, And by controlling the supply of oxygen and fuel gas through the operation of the first valve 111 and the second valve 112, high-speed or low-speed injection of the oxygen and the fuel gas is possible.

This will be obvious to those skilled in the art, and a detailed description thereof will be omitted below.

The torch portion 100 of the oxygen cutter may include an oxygen supply line 170 located on the other side of the body portion 110 and may be located on the other side of the body portion 110, And a fuel gas supply line 160 disposed apart from the supply line 170.

Further, it may include a fuel gas valve 161 for controlling whether or not to supply the fuel gas provided from the fuel gas supply line.

This will be obvious to those skilled in the art, and a detailed description thereof will be omitted below.

On the other hand, as described above, after using the oxygen cutter, the user locks the valves, such as the first valve 111 and the second valve 112, (140).

However, if the user's carelessness does not securely lock the valves, such as the first valve 111 and the second valve 112, the oxygen or fuel gas will continuously leak through the nozzle of the torch.

As a result, there is a risk of explosion accident due to leakage of such oxygen or fuel gas.

Accordingly, the present applicant has proposed a gas leakage alarm device 150 by attaching a gas leakage alarm device 150 to at least one of the oxygen pipe 120 and the fuel gas pipe 130 to prevent an explosion accident caused by the leakage of oxygen or fuel gas do.

On the other hand, for convenience of explanation, the oxygen or the fuel gas will be collectively referred to as a gas hereinafter.

That is, the gas described below may be oxygen or fuel gas, for example, when the gas leakage alarm device is located on the oxygen pipe 120 side, the gas may mean oxygen, When the gas leakage alarm device is located on the side of the oxidizing fuel gas pipe 130, the gas may mean a fuel gas.

2 and 3, the oxygen pipe 120 is spaced apart from the first oxygen pipe 120a connected to the nozzle unit 110 and the first oxygen pipe 120, And a second oxygen pipe 120b connected to the body 110. [

And a gas leakage alarm device 150 connected to one end 121 of the first oxygen pipe 120a and connected to one end 122 of the second oxygen pipe 120b.

At this time, the other end of the first oxygen pipe 120a may be connected to the nozzle unit 110, and the other end of the second oxygen pipe 120b may be connected to the body 110 .

The gas leakage alarm device 150 is connected to one end 121 of the first oxygen pipe 120a and one end 122 of the second oxygen pipe 120b by a known coupling means And may be connected through a nut coupling as shown in, for example, FIGS. 2 and 3. However, in the present invention, the connection between the gas leakage alarm device and the first oxygen pipe and the second oxygen pipe .

Meanwhile, as described above, the gas leakage alarm device 150 may be attached to at least one of the oxygen pipe 120 and the fuel gas pipe 130.

2 and 3 illustrate that the gas leakage alarm device 150 is positioned on the oxygen pipe 120. Alternatively, the gas leakage alarm device 150 may include the fuel gas pipe 130, The gas leakage alarm device 150 may be located on the side of the oxygen pipe 120 and the side of the fuel gas pipe 130, respectively.

For example, although not shown in the drawing, when the gas leakage alarm device 150 is located on the side of the fuel gas pipe 130, it can be defined as follows.

That is, the fuel gas pipe 130 is spaced apart from the first fuel gas pipe (not shown) and the first fuel gas pipe (not shown) connected to the nozzle unit 110 and connected to the body 110 And a second fuel gas pipe (not shown).

And a gas leakage alarm device (not shown) connected to one end of the first fuel gas pipe (not shown) and connected to one end of the second fuel gas pipe (not shown).

At this time, the other end of the first fuel gas pipe (not shown) is connected to the nozzle unit 110, and the other end of the second fuel gas pipe (not shown) is connected to the body 110 .

Accordingly, in the present invention, the gas leakage alarm device 150 may be attached to at least one of the oxygen pipe 120 and the fuel gas pipe 130.

Hereinafter, the gas leakage alarm device according to the present invention will be described in more detail. Hereinafter, the case where the gas leakage alarm device is attached to the oxygen pipe 120 will be described. In the case where the gas leakage alarm device is attached to the fuel gas pipe 130, the following description can be referred to .

4 and 5 are schematic perspective views showing a gas leakage alarm device according to the present invention.

4 and 5, a gas leakage alarm device 150 according to the present invention is connected to one end 121 of the first oxygen pipe 120a and is connected to one end of the second oxygen pipe 120b And a main pipe 151 connected to the end 122.

That is, the main pipe 151 corresponds to a region connecting the gas leakage alarm device with the first oxygen pipe and the second oxygen pipe, and the gas supplied from the body portion 110 is connected to the second oxygen pipe The main pipe 151, and the first oxygen pipe 120a.

At this time, one end 152 of the main pipe 151 is connected to one end 121 of the first oxygen pipe 120a, and the other end 153 of the main pipe 151 is connected to the second oxygen And may be connected to one end 122 of the tube 120b.

The gas leakage alarm device 150 according to the present invention may include a branch pipe 154 branched from the main pipe 154 and an alarm unit 200 connected to the branch pipe 154.

Hereinafter, the alarm unit 200 according to the present invention will be described in more detail.

Figures 6 and 7 are schematic cut-away views showing an alarm part according to the present invention. 6 shows a state in which cutting is performed using an oxygen cutter, in which the warning section does not perform an alarm. FIG. 7 shows a state in which the oxygen cutter is not used, In a state in which it is in a state of warning.

6 and 7, an alarm unit 200 according to the present invention includes a housing 210; A gas inlet 201 located at one side of the housing 210; A slit 203 positioned on the other side of the housing 210; And a blocking wall 202 where the slit opening 203 is located.

The partition wall 213 extends from the blocking wall 202 and defines an inner space of the housing 210.

At this time, the partitions 213 and 214 have a cylindrical shape, one side is connected to the blocking wall 202 and closed, and the other side is located in the inner space of the housing 210.

That is, one side of the barrier ribs 213 and 214 may be defined as a closed portion, and the other side of the barrier ribs 213 and 214 may be defined as an opening.

However, since the closing portion is connected to the slit opening 203, it is not a completely closed portion. However, in a state where the slit opening 203 is connected to the slit opening 203 Is defined as a closed portion.

Meanwhile, as described above, the partition walls 213 and 214 are cylindrically shaped to define the inner space of the housing 210. [

That is, the inner space of the housing 210 is divided into a space 215 inside the partitions 213 and 214 and a space 213 inside the partitions 213 and 214 with reference to the cylindrical partitions 213 and 214, 212, 214 located outside the partition walls 214, 212, respectively.

As shown in the drawing, the interior space 215 of the partition wall is in communication with the slit opening 203 of the blocking wall 202, and the external space 211, 212 of the partition wall is in communication with the blocking wall 202 The slit hole 203 is not in communication with the slit hole 203 in FIG.

In this sense, the partition inner space 215 may be defined as a space communicating with the slit orifice, and the partition outer space 211 or 211 may be defined as a non-condensation space not communicating with the slit orifice.

6 and 7, the alarm unit 200 according to the present invention includes a gas flow control unit 224 for opening and closing the openings of the partitions 213 and 214.

That is, as described above, the barrier ribs 213 and 214 have a cylindrical shape, and one side region includes a closed portion connected to the blocking wall 202, and the other side region includes the inside of the housing 210 The gas flow control unit 224 may open or close the openings of the partitions 213 and 214. In this case,

More specifically, the gas flow control unit 224 includes a blocking plate 221 for opening and closing an opening of the partition wall; A support portion 222 connected to the blocking plate; And an elastic member 223 located in the inner space of the partition wall, one side area connected to the support part 222 and the other side area connected to the blocking wall 202.

That is, the gas flow control part 224 moves the supporting part 222 according to the operation of the elastic member 223 and moves the blocking plate 221 connected to the supporting part 222, The openings of the barrier ribs 213 and 214 may be opened or closed.

Hereinafter, the principle of opening or closing the openings of the barrier ribs 213 and 214 will be described.

As described above, FIG. 6 shows a state in which cutting is proceeded using an oxygen cutter, in which the warning section does not perform an alarm, FIG. 7 shows a state in which no oxygen cutter is used, And shows a state in which the alarm unit warns the gas leakage.

6, the gas supplied from the body 110, that is, oxygen, is supplied to the second oxygen pipe 120b, the main pipe 151, And may be supplied to the nozzle unit 140 through the first oxygen pipe 120a.

At this time, the gas supplied from the body 110 flows into the branch pipe 154 branched from the main pipe 151.

At this time, since the gas supplied from the body 110 is high in the state of cutting using the oxygen cutter, the gas flowing into the branch pipe 154 also becomes high pressure.

The high-pressure gas introduced into the branched pipe 154 flows into the housing 210 through the gas inlet 201 located at one side of the housing 210 and flows into the inside of the housing 210 The blocking plate 221 presses the blocking plate 221 with a force greater than the elastic force of the elastic member 223 so that the blocking plate 221 is separated from the partitioning walls 213 and 214 Is closed.

In addition, since the openings of the partition walls 213 and 214 are closed, the flow of the gas is blocked in the partition internal space 215, which is a space communicated with the slit opening 203, No alarm occurs.

However, as shown in Fig. 7, in a situation where the oxygen cutter is not used, or the user can not fully lock the valve due to carelessness, unlike the above-described high-pressure gas in Fig. 6, Pressure gas presses the blocking plate 221 with a force smaller than the elastic force of the elastic member 223 so that the blocking plate 221 can not overcome the elastic force of the elastic member, The openings of the barrier ribs 213 and 214 are opened.

In addition, since the openings of the partition walls 213 and 214 are opened, a flow of gas is generated in the partition internal space 215, which is a space communicating with the slit opening 203, An alarm by the slit opening 203 is generated.

That is, if the alarm sounds even when the flame of the torch is extinguished, the valve is not fully immersed and gas is leaking out. In this case, an alarm is generated in the slit opening 203, Is locked again.

As described above, after using the oxygen cutter, the user can lock the valves, such as the first valve 111 and the second valve 112, to prevent further oxygen or fuel gas from flowing into the nozzle portion 140 ) Shall be prevented from being provided.

However, if the user's carelessness does not securely lock the valves, such as the first valve 111 and the second valve 112, the oxygen or fuel gas will continuously leak through the nozzle of the torch.

As a result, in a general oxygen cutter, a safety accident of an explosion accident caused by leakage of such oxygen or fuel gas occurs. However, in the present invention, the user can confirm whether or not the valve is locked through the gas leakage alarm device Therefore, even if the user's carelessness occurs, the user can recognize whether or not the gas leaks through the alarm sound.

On the other hand, the present invention has the following additional advantages.

More specifically, when the user uses an oxygen cutter, the gas flowing into the housing 210 is a high-pressure gas. When the user locks the valve to prevent the use of the oxygen cutter, The gas introduced into the interior of the reactor will gradually become low-pressure gas.

Accordingly, in the low-pressure gas state, since the openings of the barrier ribs 213 and 214 are opened, a flow of gas occurs in the barrier rib internal space 215, which is a space communicating with the slit opening 203, By the flow of the gas, an alarm by the slit opening 203 is generated.

That is, in the case of the oxygen cutter according to the present invention, even if the flow of gas is shut off normally, that is, when the valve is completely closed, in the process of changing from the high pressure gas to the low pressure gas, .

At this time, since there is no gas supplied to the slit opening 203, since a low-pressure gas will be in a state where no gas is supplied at normal operation, after one alarm sound is generated, Will not occur.

However, in the abnormal operation in which the user does not completely lock the valve, an alarm sound will be continuously generated. Therefore, in the present invention, whether or not the oxygen cutter is used can be determined through the occurrence of the alarm sound.

In other words, whether or not the torch flame is extinguished can be visually identified to confirm whether or not the oxygen cutter is used. In addition, whether or not the oxygen cutter is used can be confirmed even when an alarm sound is generated and does not occur again.

Further, the present invention has the following additional advantages.

According to the present invention, it is possible to determine whether or not the neck sound is generated according to the high or low pressure of the provided gas. For example, in the case where the user uses the oxygen cutter, , When the low-pressure cutting is performed, an alarm sound will be generated in the gas leakage alarm device, so that even when the user uses the oxygen cutter, it is possible to confirm whether the gas is high or low pressure.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (8)

A body portion;
An oxygen tube connected to one side of the body part;
A fuel gas pipe connected to one side of the body portion and spaced apart from the oxygen pipe;
A nozzle unit connected to the oxygen pipe and the fuel gas pipe; And
And a gas leakage alarm device attached to at least one of the oxygen pipe and the fuel gas pipe,
Wherein the gas leakage alarm device includes an alarm section,
The alarm unit,
housing; A gas inlet located at one side of the housing; A slit port located on the other side of the housing; A blocking wall in which the slit is located; And a partition wall extending from the blocking wall and defining an interior space of the housing. The method according to claim 1,
The oxygen tube may be,
A first oxygen pipe connected to the nozzle unit, and a second oxygen pipe spaced apart from the first oxygen pipe and connected to the body unit,
Wherein the gas leakage alarm device is connected to one end of the first oxygen pipe and one end of the second oxygen pipe. The method according to claim 1,
The fuel gas pipe,
A first fuel gas pipe connected to the nozzle unit, and a second fuel gas pipe located apart from the first fuel gas pipe and connected to the body part,
Wherein the gas leakage alarm device is connected to one end of the first fuel gas pipe and one end of the second fuel gas pipe. 3. The method of claim 2,
The gas leakage alarm device includes:
A main pipe connected to one end of the first oxygen pipe and connected to one end of the second oxygen pipe; A branch pipe branched from the main pipe; And the alarm part connected to the branch pipe. The method of claim 3,
The gas leakage alarm device includes:
A main pipe connected to one end of the first fuel gas pipe and connected to one end of the second fuel gas pipe; A branch pipe branched from the main pipe; And the alarm part connected to the branch pipe. delete The method according to claim 1,
Wherein the partition wall has a cylindrical shape, the one side region includes a closed portion connected to the blocking wall and the other side region includes an opening located in an inner space of the housing,
The inner space of the housing is divided into an inner space of the partition located inside the partition and a space outside the partition located outside the partition with respect to the partition,
Wherein the partition wall inner space is in communication with the slit hole and the outer space of the partition wall is not in communication with the slit hole. 8. The method of claim 7,
Wherein the alarm unit includes a gas flow control unit that opens and closes an opening of the partition,
Wherein the gas flow control unit comprises:
A blocking plate for opening and closing the opening of the partition; A support connected to the blocking plate; And an elastic member located in an inner space of the partition wall, one side area connected to the support part and the other side area connected to the blocking wall.

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