KR20230055052A - Active type fume collecting apparatus of cutting suface of high manganese steel with position synchronization function of cutting torch and position synchronization method of cutting torch with fume collecting hood thereof - Google Patents

Abstract

The present invention relates to a fume dust collection device for a high-manganese steel cutting surface for collecting fumes generated when cutting high-manganese steel using a cutting torch while the high-manganese steel is seated on an upper part of the cutting surface. According to the present invention, the fume dust collection device for a high-manganese steel cutting surface comprises: a dust collection unit equipped with a dust collection hood installed at a lower part of a cutting table to face the cutting torch to locally exhaust fumes generated during cutting; and a hood moving means for moving the position of the dust collection hood according to the position of the cutting torch.

Description

Fume dust collector of high manganese steel cutting table having position synchronization function of cutting torch and position synchronization method of dust collection hood of the fume dust collector and the cutting torch CUTTING TORCH AND POSITION SYNCHRONIZATION METHOD OF CUTTING TORCH WITH FUME COLLECTING HOOD THEREOF}

The present invention relates to a fume dust collector for a high manganese steel cutting table, and more particularly, to enable local exhaustion of fume generated during cutting while moving along the position of a cutting torch at the lower part of a cutting table on which high manganese steel is placed. It relates to a fume dust collector for a high manganese steel cutting table having a function of synchronizing the position of a cutting torch and a method for synchronizing the positions of the dust collecting hood of the fume dust collector and the cutting torch.

As environmental pollution regulation standards for ships have been strengthened, interest in eco-friendly and highly efficient liquefied gas fuels such as liquefied natural gas (LNG) or liquefied petroleum gas (LPG) has increased. It is increasing.

Liquefied natural gas is obtained by cooling and liquefying methane obtained by refining natural gas collected from gas fields. .

In particular, liquefied natural gas (hereinafter referred to as 'LNG') is obtained by cooling natural gas to an extremely low temperature (about -163 ° C), and its volume is reduced to about 1/600 of that of gaseous natural gas, so it is safe to use the sea. It is very suitable for transport over long distances.

Liquefied gas is transported in a gaseous state through onshore or offshore gas pipelines, or transported in a liquid state to a distant consumer while stored on a transport ship.

An LNG carrier for loading and unloading liquefied gas, such as LNG, by sea and loading and unloading liquefied gas to a destination on land, or a ship that regasifies stored LNG and unloads it in the state of natural gas after navigating the sea and arriving at a destination on land. An LNG Regasification Vessel (RV) is provided with a liquefied gas storage tank (commonly referred to as a 'cargo hold') that can withstand the cryogenic temperature of LNG.

These liquefied gas storage tanks can be classified into a membrane type and an independent type depending on whether the cargo load directly acts on the insulation.

Membrane type storage tanks are divided into No 96 type and Mark III type, and independent storage tanks are divided into Type A, Type B, and Type C according to the regulations of the International Maritime Organization (IMO), among which Type B independent type Storage tanks include a spherical type MOSS tank and a prismatic type SPB tank.

Recently, there is an increasing demand for LNG Fueled Ships (LFS) using LNG, which is an eco-friendly fuel, for more various types of ships, such as container ships and tankers, as well as liquefied gas carriers that transport liquefied gas as cargo.

The foregoing technical configuration is a background technology for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Republic of Korea Registered Utility Model Publication No. 20-021800 “Dust Collector for Traveling Automatic Cutting Machine”

In order to safely store and store liquefied gas, the liquefied gas storage tank in direct contact with liquefied gas is made of a material that can withstand extreme temperature changes, such as aluminum alloy, SUS (Steel Use Stainless) or , 9% nickel alloy (9% Nickel steel), etc. should be made of an alloy that is resistant to low temperatures.

However, since these materials are expensive, high manganese steel, which is inexpensive and has excellent corrosion resistance at low temperatures, is attracting attention as a material for storage tanks.

High manganese steel is an innovative material that is specialized in various performances such as high strength, wear resistance, cryogenic toughness, and non-magnetic by adding a large amount of manganese (Mn) to iron. While having strength and toughness, it has the advantage of being stable in terms of supply and demand due to its abundant reserves and excellent price competitiveness.

On the other hand, cutting methods used to cut steel plates include oxygen cutting, plasma cutting, laser cutting, and water jet cutting. Plasma cutting can be applied to a relatively wide range of thicknesses compared to other cutting methods, so it can be used in shipbuilding, construction, etc. It is widely used in industrial fields.

When cutting general steel materials, a separate dust collection facility is not operated, or natural ventilation or forced exhaust is performed for the entire area. In cutting large materials, fume is generated locally only where the cutting torch is working. Therefore, a method of ventilating or exhausting the entire area of the cutting table where large materials are placed may not be effective.

In particular, in the case of high-manganese steel, fumes generated during cutting contain manganese, which is a harmful substance, so rapid dust collection through local exhaust may be required.

The present invention is a fume dust collector having a position synchronization function of a cutting torch capable of local exhaust of fume generated during cutting while moving along the position of the cutting torch at the lower part of a cutting table on which high manganese steel is placed, and a dust collecting hood of the fume dust collector And it is an object of the present invention to provide a method for synchronizing the position of the cutting torch.

According to one aspect of the present invention, a device for collecting fumes generated when cutting high manganese steel using a cutting torch in a state where the high manganese steel is seated on the upper part of the cutting tablen, facing the cutting torch at the lower part of the cutting tablen A dust collecting unit equipped with a dust collecting hood installed to see and locally exhausting fumes generated during cutting; and a hood moving unit for moving the position of the dust collecting hood according to the position of the cutting torch.

Torch moving means for moving the cutting torch horizontally and vertically on the cutting tablen; And it may further include a controller connected to the torch moving means to control the operation of the torch moving means.

In addition, the control unit may generate information on a moving trajectory of the cutting torch based on cutting drawing information of the high manganese steel and control an operation of the torch moving means.

In addition, the hood moving unit may receive movement trajectory information of the cutting torch from the control unit and synchronize the movement trajectory information of the cutting torch with the movement trajectory of the dust collecting hood.

In addition, the hood moving means may be controlled to operate together with the operation of the torch moving means.

In addition, the torch moving means and the hood moving means may be provided with any one of a machine tool and an articulated robot controlled to move according to Cartesian coordinate values in the form of an X-Y plotter.

In addition, the dust collecting unit may include a dust collector unit provided to provide a suction force to the dust collecting hood; and a dust collecting hose connecting the dust collector unit and the dust collecting hood to transfer fume sucked from the dust collecting hood to the dust collector unit.

The air blowing unit may further include an air blowing unit for blowing air toward a lower surface of the cutting table near an edge of the dust collecting hood.

According to another aspect of the present invention, as a method of synchronizing the positions of the dust collecting hood and the cutting torch, through a control unit connected to a torch moving means for moving the cutting torch horizontally and vertically on the top of the cutting tablen. Generating information about the moving trajectory of the cutting torch; and synchronizing the moving trajectory of the dust collecting hood with the moving trajectory information of the cutting torch by transferring the moving trajectory information of the cutting torch to the hood moving means. there is.

In the step of generating information on the moving trajectory of the cutting torch, the control unit may generate information on the moving trajectory of the cutting torch by receiving cutting drawing information of the high manganese steel.

In the present invention, by providing a dust collection hood that moves by following the position of the cutting torch at the lower part of the cutting surface, fume can be collected immediately and efficiently while consuming less energy than the method of collecting dust over the entire area of the cutting surface at once. can have an effect.

In addition, a small amount of air flow can be generated from the lower part of the cutting table by providing an air blowing unit that blows air near the edge of the dust collecting hood, and through this, fume diffusion is prevented in advance as the fume is quickly collected into the dust collecting hood. can have the effect of

1 is a view schematically showing a state in which high manganese steel is seated on an upper portion of a cutting tablen.
2 is a view schematically showing the configuration of a fume dust collector of a high manganese steel cutting table according to an embodiment of the present invention.

In order to fully understand the present invention and its operational advantages and objectives achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings.

In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted. Preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited or limited thereto and can be modified and implemented in various ways by those skilled in the art, of course.

1 is a view schematically showing a state in which high manganese steel is seated on an upper portion of a cutting tablen, and FIG. 2 is a view schematically showing the configuration of a fume dust collector of a high manganese steel cutting tablen according to an embodiment of the present invention.

Referring to FIG. 1, the high manganese steel 101 to be cut is seated on the cutting tablen 110, and from the top of the cutting tablen 110, the horizontal direction (X-axis, see FIG. 1) and the vertical direction (Y-axis, FIG. 1) may be provided with a cutting torch (T) for cutting the high manganese steel 101 while moving.

The cutting surface plate 110 has a lattice structure and is installed to be spaced apart from the bottom surface, and the high manganese steel 101 is seated on the upper part of the cutting surface plate 110 through a separate crane (not shown). It can be transported up to , and can be set in place on the cutting table 110 while hanging from a crane.

In this embodiment, the cutting torch (T) is provided downwardly from the upper part of the cutting surface (110) to perform cutting. A torch moving means 130 for moving may be provided.

The torch moving means 130 of this embodiment may serve to move the cutting torch T according to a predetermined cutting path of the high manganese steel 101 .

In this embodiment, the torch moving means 130 may be most suitable to be provided with a machine tool controlled to move according to the Cartesian coordinate values of the X-Y plotter type, but the present invention is not limited thereto, and two to three axes It may be provided as an articulated robot capable of controlling movement with an axis.

Hereinafter, for convenience of description, the torch moving means 130 of this embodiment is a machine tool control means for performing the position control function of the cutting torch T, that is, an NC machine tool connected to a control unit (not shown) ( Numerical Controlled Machine) will be described as being prepared.

NC machine tools are well known widely used in automation equipment for cutting and welding objects to be processed, and a detailed description of the specific configuration and operation of the NC machine tools will be omitted.

The control unit of this embodiment may generate information on the moving trajectory of the cutting torch T based on the cutting drawing information of the high manganese steel 101 before the cutting operation of the high manganese steel 101 is performed, and the torch The operation of the moving means 130 may be controlled.

In this embodiment, the control unit may be a computer having an NC control program according to the material and shape of the object to be cut, and the control signal transmission method with the torch moving means 130 is both a wired communication method and a wireless communication method through a computer. It could be possible.

Here, the NC machine machine acquires G-code information for performing the position control function of the cutting torch (T). The G-code is the movement of the NC machine tool and the cutting torch (T) connected to the NC machine machine. Information on the moving trajectory of the cutting torch (T) may be included as command information for controlling the etc.

On the other hand, when cutting general steel materials, a separate dust collection facility is not operated, or it is performed at the level of natural ventilation or forced exhaust for the entire area. This could be inefficient.

In particular, in the case of high-manganese steel, fumes generated during cutting contain manganese, which is a harmful substance, so rapid dust collection through local exhaust may be required.

An object of the present invention is to provide a fume dust collector capable of immediately and efficiently collecting fume containing manganese, which is a harmful substance, during a cutting operation by placing high manganese steel on an upper portion of a cutting table 110.

Referring to FIG. 2 , the fume dust collector according to an embodiment of the present invention is for collecting fume generated when the high manganese steel 101 is cut at the lower part of the cutting tablen 110. A dust collecting unit 150 having a dust collecting hood 151 installed facing the cutting torch T at the bottom to locally exhaust fume generated during cutting, and a dust collecting hood 151 depending on the location of the cutting torch T A hood moving means 170 for moving the position may be included.

The dust collecting unit 150 of the present embodiment connects the dust collector unit 153 provided to provide a suction power to the dust collecting hood 151, and the dust collector unit 153 and the dust collecting hood 151 are sucked in from the dust collecting hood 151. It may further include a dust collection hose 155 that transfers the fume to the dust collector unit 153.

In this embodiment, it is preferable that the top of the dust collection hood 151 is open so that fume can be sucked smoothly from the bottom of the cutting table 110, and the diameter (or width) gradually decreases toward the bottom. can

Similar to the torch moving means 130, the hood moving means 170 may be provided with an NC machine that is connected to the controller and controlled to move according to the Cartesian coordinate value, and the dust collecting hood according to the position of the cutting torch T (151) can be moved.

The hood moving means 170 of this embodiment may receive movement trajectory information of the cutting torch T from the torch moving means 130, and the movement trajectory information of the cutting torch T and the movement of the dust collection hood 151 Trajectories can be synchronized.

In addition, it may be preferable that the hood moving means 170 of this embodiment be controlled to operate together with the operation of the torch moving means 130 .

Here, if the operating range and coordinate system of the torch moving means 130 and the hood moving means 150 are the same, the control unit uses only the movement trajectory information of the cutting torch T to move the torch moving means 130 and the hood moving means ( 170) can be configured to operate concurrently.

In other words, the control unit generates movement trajectory information of the cutting torch T based on the cutting drawing information of the high manganese steel 101 and then transfers it to the hood moving means 170, thereby positioning the upper part of the cutting table 110 The moving trajectory of the cutting torch (T) and the moving trajectory of the dust collecting hood 151 located below the cutting table 110 may be synchronized to match.

Hereinafter, a method for synchronizing the positions of the dust collecting hood 151 of the fume dust collector having the above configuration and the cutting torch T will be briefly described. Generating information on the movement trajectory of the cutting torch (T) through a control unit connected to the means 130; It may include synchronizing the moving trajectory of the dust collecting hood 151 with the moving trajectory information of the cutting torch (T).

In the step of generating information on the moving trajectory of the cutting torch (T), the control unit may generate information on the moving trajectory of the cutting torch (T) by receiving cutting drawing information of the high manganese steel.

Referring back to FIG. 2, the fume collector according to an embodiment of the present invention may further include an air blowing unit 190 for blowing air near the edge of the dust collecting hood 151 to prevent the diffusion of fumes. can

The air blowing unit 190 of the present embodiment may include one or more nozzles that blow air toward the lower surface of the cutting table 110 near the edge of the dust collecting hood 151 .

In this embodiment, it may be preferable that a plurality of air blowing units 190 are provided in the circumferential direction of the edge of the dust collecting hood 151 in order to more effectively prevent the diffusion of fume.

In this embodiment, when the air blowing unit 190 is composed of a plurality of nozzles, the air blowing direction of each of the plurality of nozzles is directed from the upper edge of the dust collecting hood 151 to the inside, that is, toward the center of the dust collecting hood 151. It may be desirable to

In other words, each of the plurality of nozzles may be installed inclined toward the lower surface of the cutting table 110 located on the central portion of the dust collecting hood 151 near the edge of the dust collecting hood 151, and may be installed in an air blowing direction (or , spraying angle) is directed inward from the edge of the dust collecting hood 151, so that it can serve as an air curtain to prevent fume from spreading.

The fume dust collector according to an embodiment of the present invention is provided with a dust collecting hood 151 that moves by following the position of the cutting torch T at the lower part of the cutting surface plate 110, so that the entire area of the cutting surface plate 110 Compared to the method of collecting dust all at once, it can have the effect of immediately and efficiently collecting fume while consuming less energy.

In addition, an air blowing unit 190 for blowing air near the edge of the dust collecting hood 151 may be provided to generate a small amount of air flow from the lower part of the cutting table 110, through which fumes ), it can have the effect of preventing the diffusion of fumes in advance.

The above description is merely an example of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. .

In addition, the protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

110: cutting table
130: torch transportation
150: dust collector
151: dust collection hood
153: dust collector unit
155: dust collection hose
170: hood vehicle
190: air injection unit
101: high manganese steel
T: Cutting Torch

Claims (9)

A device for collecting fumes generated when cutting high manganese steel using a cutting torch in a state where the high manganese steel is seated on the upper part of the cutting table,
a dust collecting unit provided with a dust collecting hood installed at the lower part of the cutting surface facing the cutting torch to locally exhaust fume generated during cutting; and
A fume dust collector of a high manganese steel cutting table including a hood moving means for moving the position of the dust collecting hood according to the position of the cutting torch. According to claim 1,
Torch moving means for moving the cutting torch horizontally and vertically on the upper part of the cutting tablen; and
The fume dust collector of the high manganese steel cutting tablen further comprising a control unit connected to the torch moving means to control the operation of the torch moving means. According to claim 2,
The control unit generates information on the movement trajectory of the cutting torch based on the cutting drawing information of the high manganese steel, and controls the operation of the torch moving means. According to claim 3,
The hood moving means receives the moving trajectory information of the cutting torch from the control unit, and the moving trajectory information of the cutting torch and the moving trajectory of the dust collecting hood are synchronized. According to claim 2,
The fume dust collector of the high manganese steel cutting tablen wherein the hood moving means is controlled to operate together with the operation of the torch moving means. According to claim 2,
The torch moving means and the hood moving means are provided with any one of a machine tool and an articulated robot controlled to move according to the Cartesian coordinate values of the XY plotter type. According to claim 1,
The fume dust collector of the high manganese steel cutting tablen further comprises an air blowing unit for blowing air toward the lower surface of the cutting tablen near an edge of the dust collecting hood. A method for synchronizing the positions of the dust collection hood and the cutting torch in the fume dust collector according to claim 1,
generating information about the movement trajectory of the cutting torch through a control unit connected to a torch moving means for moving the cutting torch in the horizontal and vertical directions from the top of the cutting tablen;
Synchronizing the moving trajectory of the dust collecting hood with the moving trajectory information of the cutting torch by transmitting the moving trajectory information of the cutting torch to the hood moving means. According to claim 8,
In the step of generating information on the moving trajectory of the cutting torch, the control unit receives the cutting drawing information of the high manganese steel and generates information on the moving trajectory of the cutting torch.

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