KR20150001590U - Portable gas pressure check device for cargo tank welding gas supply system of ship - Google Patents

Portable gas pressure check device for cargo tank welding gas supply system of ship Download PDF

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Publication number
KR20150001590U
KR20150001590U KR20130008532U KR20130008532U KR20150001590U KR 20150001590 U KR20150001590 U KR 20150001590U KR 20130008532 U KR20130008532 U KR 20130008532U KR 20130008532 U KR20130008532 U KR 20130008532U KR 20150001590 U KR20150001590 U KR 20150001590U
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KR
South Korea
Prior art keywords
gas
welding
pressure
cargo tank
gas supply
Prior art date
Application number
KR20130008532U
Other languages
Korean (ko)
Inventor
김승기
Original Assignee
현대중공업 주식회사
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Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR20130008532U priority Critical patent/KR20150001590U/en
Publication of KR20150001590U publication Critical patent/KR20150001590U/en

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Classifications

    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B23K9/325—Devices for supplying or evacuating shielding gas
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/024—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges with mechanical transmitting or indicating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/026—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges with optical transmitting or indicating means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to a portable gas pressure check apparatus for a gas supply system for welding a cargo tank, and more particularly, to a gas pressure check apparatus for a gas cargo tank for welding a cargo tank by visually checking the operating pressure of a welding gas when welding a cargo tank And a danger signal is generated to the operator when the operating pressure of the welding gas is equal to or less than the minimum value of the allowable pressure so as to prevent welding defects in advance, in a gas supply system for a marine cargo tank .
According to the present invention, a portable gas pressure check device of a gas supply system for welding a cargo tank for a ship is characterized in that a distributor is connected to a gas supply line for supplying gas to each welder located in a cargo tank, Wherein the gas supply line is connected to each line inlet port of the distributor and the gas line of each welder is connected to each line outlet port of the distributor to weld the cargo tank of the ship. A gas supply system comprising: a pressure gauge connected to a discharge side of the distributor by a connection hose to measure a pressure of a welding gas; A warning light emitting a warning light and a light when the operating pressure of the welding gas measured by the pressure gauge is not more than a minimum value of the allowable pressure; A rectangular main body to which the pressure gauge and the warning light are mounted; A contact shaft provided at the pressure gauge at a minimum allowable pressure position of the welding gas, for connecting the power source to the beacon by the contact of the pressure gauge; And a power unit for supplying power to the pressure gauge and the warning light.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable gas pressure check device for a cargo tank,

The present invention relates to a portable gas pressure check apparatus for a gas supply system for welding a cargo tank, and more particularly, to a gas pressure check apparatus for a gas cargo tank for welding a cargo tank by visually checking the operating pressure of a welding gas when welding a cargo tank , And a warning sign is generated to the operator when the working pressure of the welding gas is less than the minimum allowable pressure to prevent welding defects in advance. Portable gas pressure check of gas supply system for welding cargo tank welding ≪ / RTI >

Generally, natural gas (NG) is transported in a gaseous state through land or sea gas pipelines, or as a liquefied natural gas (LNG) liquefied at a cryogenic temperature, for example, by using a membrane LNG carrier, To a remote destination.

The membrane LNG carrier is equipped with a cargo tank for storing liquefied natural gas. The cargo tank is provided with a supply part for supplying liquefied natural gas and a discharge pipe for discharging liquefied natural gas.

As a prior art related to the above cargo tanks, Korean Patent Laid-Open Publication No. 2003-0050314 (Jun. 25, 2003) discloses a cargo tank structure of an LNG carrier, and Korean Patent Publication No. 2010-0077787 Discloses a technique for reducing the sloshing effect of a cargo tank.

1 and 2, a gas supply system S for welding cargo tank tanks for welding the cargo tanks described above comprises a gas tank 10 for storing welding gas installed on the deck of the vessel A, A distributor 50 is connected to a gas supply line 40 for supplying a gas to each welder 30 located in the cargo tank 20 at each line inlet 51 of the distributor 50 And the gas line 60 of each welder 30 is connected to the line outlet 52 of the distributor so that the inside of the cargo tank 20 of the ship A is connected Welding.

When the welding machine (30) of the gas supply system (S) for welding the vessel cargo tank is a carbon dioxide (CO2) welder, the carbon dioxide is collected and stored in order to reduce the amount of carbon dioxide, which is an environmental pollutant, (Carbon Capture & Storage), aka CCS technology.

When the inside of the cargo tank 20 is welded, the conventional gas supply system S for welding the cargo tank of the ship is adjusted to a constant pressure through a pressure regulator when the working pressure is higher than the maximum value of the allowable pressure However, since there is no danger signal when the operating pressure of the welding gas is below the minimum value of the allowable pressure, that is, when the supply of welding gas is insufficient, welding in the cargo tank 20 in this state causes cracking, There is a problem that weld defects such as shortage occur.

The present invention has been devised to solve the above problems and it is an object of the present invention to provide a gas supply system for a cargo tank for welding vessels that visually confirms the operating pressure of the welding gas from time to time when welding a cargo tank mounted on a ship And an object thereof is to provide a portable gas pressure check device of a system.

Another object of the present invention is to provide a gas supply system for a vessel cargo tank welding which can prevent welding defects by generating a danger signal to the operator when the working pressure of the welding gas supplied to the welding machine is less than the minimum allowable pressure And a portable gas pressure check device.

According to an aspect of the present invention, there is provided a portable gas pressure check device for a gas supply system for welding a cargo tank in a ship, comprising: a gas supply device for supplying gas to each welder in a cargo tank, And a gas line of each welder is connected to the outlet of each line of the distributor so that the inside of the cargo tank of the ship is welded to the line outlet side of the distributor. And a pressure gauge connected to the outlet side of the distributor by a connection hose to measure a pressure of the welding gas; A warning light emitting a warning light and a light when the operating pressure of the welding gas measured by the pressure gauge is not more than a minimum value of the allowable pressure; A rectangular main body to which the pressure gauge and the warning light are mounted; A contact shaft provided at the pressure gauge at a minimum allowable pressure position of the welding gas, for connecting the power source to the beacon by the contact of the pressure gauge; And a power unit for supplying power to the pressure gauge and the warning light.

And the discharge port side of the distributor is connected to a quick coupler provided at one end of the connection hose.

A first power line connected to the contact point of the power unit and the pressure gauge; A second power line connected to the power supply unit and a warning light; And a third power source line to which the indicator shaft of the pressure gauge is connected and a beacon is connected to the power source when the use pressure of the welding gas is less than a minimum allowable pressure.

According to the portable gas pressure check device of the gas supply system for welding cargo tanks according to the present invention, the portable gas pressure check device of the present invention can be easily carried to a gas supply system for welding a conventional cargo tank, It is possible to visually confirm the operating pressure of the welding gas at the time of welding the inside of the cargo tank.

In addition, when the working pressure of the welding gas supplied to the welding machine is below the minimum value of the allowable pressure, the operator generates a danger signal, so the operator can stop the welding operation and take necessary measures to supply the welding gas within the allowable pressure range It is possible to prevent welding defects due to a shortage of the pressure of the welding gas when the inside of the cargo tank is welded.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a gas supply line of a gas supply system for welding cargo tank tanks in accordance with a conventional example,
2 is a schematic view of a gas supply system for welding cargo tank tanks according to a conventional example,
3 is a view schematically showing a configuration of a portable gas pressure check device of a gas supply system for welding cargo tanks of a ship according to an embodiment of the present invention;
4 is a view showing a flow of a welding gas for welding a cargo tank of a ship according to an embodiment of the present invention,
5 is a view schematically showing a use state of a portable gas pressure check device of a gas supply system for welding cargo tanks of a ship according to an embodiment of the present invention,
6 is a view showing a state in which electric power is supplied to a warning light of a portable gas pressure check device of a gas supply system for welding cargo tanks of a ship according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a portable gas pressure check device for a gas supply system for welding cargo tanks according to the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below.

It is to be understood that the shapes and the like of the elements in the drawings may be exaggerated in order to emphasize a clearer description, and the same members in the drawings may be denoted by the same reference numerals, Detailed descriptions of known functions and configurations to be determined are omitted.

FIG. 3 is a schematic view of a portable gas pressure check apparatus of a gas supply system for welding cargo tanks according to an embodiment of the present invention. FIG. 4 is a cross- FIG. 5 is a view schematically showing the use state of the portable gas pressure check apparatus of the gas supply system for welding cargo tanks of ships according to an embodiment of the present invention, and FIG. 6 is a view Fig. 6 is a view showing a state where electric power is supplied to a beacon of a portable gas pressure check device of a gas supply system for welding cargo tanks in accordance with an embodiment of the present invention. Fig.

As shown in FIGS. 3 to 6, the portable gas pressure check device 100 of the gas supply system for welding cargo tanks according to the present invention includes a gas tank 10 in which the welding gas is stored, A distributor 50 is connected to a gas supply line 40 for supplying gas to each welder 30 positioned on the side of the gas supply line 40 And a gas line 60 of each welder 30 is connected to the line outlet 52 side of the distributor 50 to weld the inside of the cargo tank 20 of the ship A, A pressure gauge 120 connected to the discharge port 52 side of the distributor 50 by a connection hose 110 to measure a pressure of the welding gas; A warning light 130 that emits a warning light and lights when the operating pressure of the welding gas measured by the pressure gauge 120 is less than or equal to a minimum value of the allowable pressure; A rectangular body 140 to which the pressure gauge 120 and the beacon 130 are mounted; A contact shaft 150 fixed to the pressure gauge 120 at a minimum allowable pressure position of the welding gas to connect the power source to the beacon 130 with the touch of the pointer 121 of the pressure gauge 120; And a power supply unit 160 for supplying power to the pressure gauge 120 and the beacon light 130. At this time, the vessel A is shown as a membrane LNG carrier for transporting liquefied natural gas (LNG) liquefied at a cryogenic temperature to a remote carrier, but it is not limited thereto, and LPG (Liquefied Petroleum Gas carrier, an LNG / LPG combined carrier, and a crude oil carrier.

The gas tank 10 is provided on the deck of the ship A to facilitate operator safety and gas filling and installation.

The cargo tank 20 is for storing liquefied natural gas. The cargo tank 20 is hermetically installed in a lower portion of the ship A, and has a plurality of chambers in a polygonal shape.

The welder 30 is provided with a plurality of welding passages for placing a plurality of welding wires in a plurality of work passages arranged in accordance with the height of the cargo tank 20 for automatically welding the cargo tanks 20 of the ship A, A welding machine includes a power supply part for supplying power, a gas supply part for supplying gas, a wire feeding part for continuously supplying the welding wire, and a torch part for welding the workpiece, though not shown.

The gas supply line 40 is provided with a plurality of first gas supply lines 40a for supplying a welding gas such as carbon dioxide gas composed of at least one component from the gas tank 20 into the cargo tank 20 of the ship A, And a second gas supply line 40b for supplying a welding gas through a gas mixing unit 45 for mixing the welding gas supplied through the first gas supply line 40a.

The second gas supply line 40b of the gas supply line 40 is connected to each line inlet 51 of the distributor 50 and the gas supply line 40b of the gas supply line 40 of each welder 30 is connected to each line discharge port 52. [ 60 are connected to the first and second gas supply lines 40a and 40b to receive welding gas supplied through the second gas supply line 40b through the inlet 51 and then to a plurality of discharge ports 52 connected to the respective welders 30, As shown in FIG. At this time, the respective line outlets 53 on the upper side of the distributor 50 are welded through the respective line inlet 51 side of the distributor 50 and the second gas supply line 40b when the respective distributors 50 are connected to each other. It is connected to the hose line so that gas is supplied.

The ball valve 54 provided at the outlet 53 of the distributor 50 may be selected and installed so that the welding gas is supplied in a region where the welder 30 is used. The valve is opened and the valve is closed so as to interrupt the supply of the welding gas in the section where the welding machine 30 is not used.

The gas supply system S for welding the vessel cargo tank as described above is preferably constituted by CCS (Carbon Capture & Storage) technology when carbon dioxide (CO2) is used as the welding gas.

As is well known, the CCS technology is a carbon dioxide capture and storage technology that directly captures carbon dioxide (CO2) emitted from a shipyard, a power plant, a steel mill, etc., and compresses and transports it to safely isolate the ground or marine deep- Technology.

The present invention relates to a conventional gas supply system for welding cargo tanks (S) having a configuration as described above, in which a connecting hose (110) of a portable gas pressure check apparatus (100) It is possible to visually and conveniently check the operating pressure of the welding gas supplied to the welding machine 30 by the pressure gauge 120, which is an instrument for notifying the pressure state by connecting to the discharge port 52 side.

It is preferable that the outlet 52 of the distributor 50 is provided with a well-known quick coupler 115 at one end of the connecting hose 110 of the portable gas pressure checker 100. This is to enable the portable gas pressure check device 100 to be quickly and easily separated from the outlet 52 of the distributor 50 and used.

The beacon 130 includes a first power line LW1 to which the contact shaft 150 of the pressure gauge 120 is connected to the power source unit 160 and a second power line LW1 to which the power source unit 160 and the beacon 130 are connected. A power line LW2 and a third power line LW3 to which the indicator shaft 122 of the pressure gauge 120 is connected and the warning light 130 are provided so that when the working pressure of the welding gas is not more than the minimum value of the allowable pressure Power is supplied. This is because the pressure of the welding gas uniformly supplied to each welder 30 through the outlet 52 of the distributor 50 is measured by the pressure gauge 120 and the pressure of the welding gas supplied to each distributor 50 by the pressure gauge 120, The operator can visually and conveniently check the operating pressure of the welding gas supplied to each welding machine 30 at any time.

 When the operating pressure of the welding gas uniformly supplied to each welder 30 through the discharge port 52 of the distributor 50 is within the allowable pressure range, the guide of the pressure gauge 120 and the contact shaft 150, (See FIGS. 3 and 4), when the operating pressure of the welding gas suddenly goes down or becomes less than the minimum value of the allowable pressure, the pressure gauge 120 is rotated in the counterclockwise direction around the guide shaft 122 to come into contact with the contact shaft 150 fixed to the pressure gauge 120 at the minimum allowable pressure position of the welding gas. At this time, the pointer 121 of the pressure gauge 120, the pointer shaft 122, and the contact shaft 150 are preferably made of a metal material including brass having excellent electrical conductivity.

When the pointer 121 of the pressure gauge 120 comes into contact with the contact shaft 150 (see FIG. 6), the warning light 130 is turned on and a warning signal The operator can stop the welding operation and take necessary measures to supply the welding gas within the allowable pressure range. Therefore, when the working pressure of the welding gas in the cargo tank 20 is lower than the minimum value of the allowable pressure It is possible to prevent welding defects in advance.

In another embodiment of the present invention, a plurality of gas welders (not shown) are used when manually requiring gas welding, including oxy-acetylene welding, in the cargo tank 20 of the vessel A Another distributor is mounted on one side of the distributor 50 so that it can be connected and used conveniently. This can be done by connecting the connection hose 110 of the portable gas pressure check device 100 to the unused outlet side of the distributor in the same manner as in the embodiment of the present invention.

As described above, although the present invention has been described with reference to certain exemplary embodiments and drawings, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

10: gas tank 20: cargo tank
30: Welding machine 40: Gas supply line
40a: first gas supply line 40b: second gas supply line
45: gas mixing section 50: distributor
51: inlet 52: outlet
53: outlet 54: ball valve
100: Portable gas pressure check device 110: Connection hose
115: Quick coupler 120: Pressure gauge
121: Guideline 122: Instructions axis
130: a warning light 140:
150: contact shaft 160: power supply part
A: Ship
S: Gas supply system for cargo tank welding

Claims (3)

A distributor (50) is connected to a gas supply line (40) for supplying gas to each welder (30) located in a cargo tank (20) in a gas tank (10) The gas supply line 40 is connected to each line inlet port 51 of the ship 100 and the gas line 60 of each welder 30 is connected to the line outlet port 52 of the distributor, In a known cargo tank tank welding gas supply system (S) for welding in a cargo tank (20)
A pressure gauge 120 connected to the discharge port 52 side of the distributor 50 through a connection hose 110 to measure a pressure of the welding gas;
A warning light 130 that emits a warning light and lights when the operating pressure of the welding gas measured by the pressure gauge 120 is less than or equal to a minimum value of the allowable pressure;
A rectangular body 140 to which the pressure gauge 120 and the beacon 130 are mounted;
A contact shaft 150 fixed to the pressure gauge 120 at a minimum allowable pressure position of the welding gas to connect the power source to the beacon 130 with the touch of the pointer 121 of the pressure gauge 120;
And a power supply unit (160) for supplying power to the pressure gauge (120) and the beacon light (130). The method according to claim 1,
Wherein the outlet 52 of the distributor 50 is connected to a quick coupler 115 provided at one end of the connection hose 110. [ Device. 3. The method according to claim 1 or 2,
The beacon 130 includes a first power line LW1 to which the contact point 150 of the pressure gauge 120 is connected to the power source unit 160; A second power line LW2 to which the power source unit 160 and the beacon light 130 are connected; And a third power line LW3 to which the indicator shaft 122 of the pressure gauge 120 is connected and the beacon 130. The power is supplied when the working pressure of the welding gas is less than a minimum value of the allowable pressure. A portable gas pressure check device for a gas supply system for welding cargo tanks.
KR20130008532U 2013-10-17 2013-10-17 Portable gas pressure check device for cargo tank welding gas supply system of ship KR20150001590U (en)

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KR20130008532U KR20150001590U (en) 2013-10-17 2013-10-17 Portable gas pressure check device for cargo tank welding gas supply system of ship

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KR20130008532U KR20150001590U (en) 2013-10-17 2013-10-17 Portable gas pressure check device for cargo tank welding gas supply system of ship

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017061745A1 (en) * 2015-10-05 2017-04-13 (주) 엘지화학 Catalyst composition containing phosphorus-based ligand and method for hydroformylation using same
CN108020371A (en) * 2017-12-06 2018-05-11 林永勤 A kind of intelligent manometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017061745A1 (en) * 2015-10-05 2017-04-13 (주) 엘지화학 Catalyst composition containing phosphorus-based ligand and method for hydroformylation using same
CN108020371A (en) * 2017-12-06 2018-05-11 林永勤 A kind of intelligent manometer

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