KR20160087620A - Double pipe for charging and discharging heterogeneous fluids, and guidance system for salvaging the hull comprising the same - Google Patents

Abstract

The present invention relates to a double pipe for injecting and discharging heterogeneous fluids and a guidance system for salvaging a hull having the same and, more specifically, to a double pipe for injecting and discharging heterogeneous fluids, which discharges a liquid material remaining in a ship while injecting gas through the inner or outer flow path of the double pipe composed of a double hollow pipe to rapidly and simply remove remaining oil or the like, and simply salvages the hull by increasing buoyancy using the injected gas, and a guidance system for salvaging a hull having the same. The double pipe comprises: an inner pipe which has a first flow path where first fluid flows and a first valve for controlling the flow of the first fluid; and an outer pipe which has a second flow path where second fluid flows and a second valve for controlling the flow of the second fluid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double piping for injecting and discharging heterogeneous fluids, and a hull floating induction device including the piping.

The present invention relates to a dual piping for injecting and discharging heterogeneous fluids and a hull floating induction device including the same. More particularly, the present invention relates to a dual piping for injecting and discharging heterogeneous fluids, The air contained in the fuel, the fresh water, the ballast water, or the closed space is injected into the space where the fluid is discharged and the air pocket formed by the injection gas To a dual pipe and a hull floating induction device capable of lifting a hull to induce lifting.

Environmental pollution caused by oil spills from vessels due to maritime accidents such as marine collision of vessels is occurring all over the world. Especially, Korea is known to have 2,600 vessels that are currently sinking in the sea, and the marine pollution is continuously caused by these sinking vessels, and there are risks and difficulties in the passage of other vessels.

Recently, in Korea, on January 31, 2014, the Wuysan lake (164,160 tons of oil tanker, Singapore) at the crude oil wharf of Yeosu GS Caltex suffered a collapse of the oil pipeline due to collision with the marine terminal, On February 15, a large cargo ship, Captain Vangelis L (88,000 ton cargo ship, Liberian national), on February 15, was exposed to 273 tonnes of oil during a long period due to the oil refinery Greenforce (460 ton oil tanker, Korean nationality) .

Also, on April 16, a large passenger ship Seowol (6,835 tons of passenger cargo carrier), which had sailed in front of Jindo in Jeonnam province, had been abandoned and sinking, resulting in a large-scale human casualty, which became a national issue.

On the other hand, in order to maintain the center of gravity at the time of ship operation, sea water is used as a so-called ballast water in a ballast water tank installed at the bottom of the ship or on the left and right sides of the ship. The sea water in another ecosystem is taken and loaded Discharging it to another port can cause marine pollution by disturbing the native ecosystem of the discharge area due to different plankton or bacteria, and ship ballast water treatment for the sinking vessel is also an important issue.

Even though such large-scale vessel accidents are not uncommon, there is not a clear basic policy for eliminating residual oil and lifting or lifting of sinking vessels due to lack of technology development and equipment development. Even in the case of the Hokkaido incident, about 9 months have passed since the current sinking in January 2015, but no basic plan has been disclosed on what techniques and methods to use for survival or hull abduction.

Korea currently owns the world's No. 1 shipbuilding technology (the world's No. 1) and offshore facilities (No. 1 in the world), ranking 7th and 6th in the shipping and shipping sectors, and fifth in terms of oil import and export. / Marine area. However, while possessing such a high level of shipbuilding, design and classification technology, the technology of removing remaining oil of the sinking ship and the technology of hull injury and salvage depend on foreign countries because there is no unique technology or equipment. This is urgent.

Registered Patent Publication No. 1301713 ('Remaining Oil Removal Device Combined with Marine Punching Machine', Announcement on Mar.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a double piping system which is capable of injecting gas such as air or steam through an inner or outer flow path of a double pipe, Which is capable of rapidly and easily removing residual oil, and increasing the buoyancy of the injected gas to allow the hull to float, and to provide a dual piping for injecting and discharging a heterogeneous fluid and a hull floating induction device including the same.

In order to achieve the above-mentioned object, according to an embodiment of the present invention, an injection gas, which is installed through an outer wall of a sunken vessel and is made of compressed air or high temperature steam, is supplied to an inner space of a ship, A double pipe (A) for discharging a liquid material composed of ballast water or the like to the outside of a ship,

An inner pipe (10) comprising a hollow tube provided with a first flow path (11) through which a first fluid flows and having a first valve (12) for controlling the flow of the first fluid; And a second valve (22) for controlling the flow of the second fluid, wherein the second valve (22) comprises a hollow tube having a second flow path (21) through which the second fluid flows to the outside of the outer circumferential surface of the inner pipe (20), wherein the first fluid and the second fluid are the injected gas or liquid material, respectively, and on an outer circumferential surface of the outer pipe (20) at a site where the outer wall of the ship and the double pipe (A) A stud ring 23 disposed inwardly of the outer wall of the ship when tied and tapered (inclined) so as to increase its diameter toward the rear, and a guide ring 23 disposed outside the outer wall of the ship at the time of binding, And a coupling nut (25) screwed into the groove (24). The double pipe for injecting and discharging a heterogeneous fluid is further provided.

At this time, the ratio of the diameter of the inner pipe 10 to the diameter of the outer pipe 20 can be adjusted. Preferably, when the diameter ratio is 30 to 40%, the first fluid is an injection gas, The fluid may be a liquid material, and as another preferred embodiment the ratio of the diameter is 60-70%, the first fluid may be a liquid material and the second fluid may be an injection gas.

The sectional area S1 of the inner pipe 10 in the direction perpendicular to the axis of the first flow path 11 is equal to the sectional area S2 of the outer pipe 20 in the direction perpendicular to the axis of the second flow path 21, The fluid may be a liquid material and the second fluid may be an injection gas.

At least one or more O-rings (not shown) are provided in the area between the stud ring 23 and the coupling nut 25 on the outer circumferential surface of the outer pipe 20 so that the outer wall of the ship and the double pipe A are tightly coupled. The inner pipe 10 is provided at a predetermined position so as to be branched in a direction perpendicular to the axis of the outer pipe 20 and is connected to the first valve 12 on the branched pipe, May be provided.

When the first fluid is an injection gas and the second fluid is a liquid substance, the inner pipe 10 and the distal end of the outer pipe 20 are connected to each other so as to extend to the bottom side of the space inside the vessel, And an inner extension hose 31 and an outer extension hose 32 coupled to the outer extension hose 32 and the inner extension hose 31 and the outer extension hose 32. The inner extension hose 31 and the outer extension hose 32, More preferably protrudes outwardly from the distal end thereof.

In the case where the first fluid is a liquid material and the second fluid is an injection gas, a hollow tube-like inner portion (not shown) is connected to the distal end of the inner pipe 10 so as to extend to the bottom surface side of the space inside the vessel, An injection gas supply tank 40 and a liquid substance storage tank 50 which are separate from the inner pipe 10 and the outer pipe 20 and are connected to the outer end of the vessel, An injection gas supply hose 41 and a liquid material discharge hose 51 connected to communicate with each other.

According to another aspect of the present invention, there is provided a ship floating induction device for removing residual liquid material in a sunken ship having the double pipe A as described above according to another embodiment of the present invention .

The dual piping for injecting and discharging the different fluids of the present invention as described above and the hull floatation induction device including the same as described above are characterized by supplying the injection gas into the hull through a double pipeline in which two flow paths are superimposed, It is possible to effectively carry out a lifting operation in accordance with the processing operation and the floating of the hull which has been sunk.

Further, through the binding and watertight sealing means such as the stud ring, the guide groove, the coupling nut, and the O-ring, it is possible to secure the watertightness of the outer wall portion of the perforated hull where the double pipe is installed simply and effectively, , It is possible to effectively control injection gas supply and residual liquid material discharge by controlling the cross-sectional area of the two flow channels, and by installing separate extension hose, it is possible to discharge residual liquid material and supply injection gas more smoothly and quickly And a separate supply / discharge hose and tank can be provided to supply the injection gas and to prevent the marine pollution from being caused by the extracted liquid matter.

On the other hand, the present invention provides a product that meets the requirements of Article 31 and Article 35 of the Marine Environment Management Act from the aspect of law and convention and the product suitable for MARPOL from the ship for prevention of oil pollution And that it can contribute to technological development and technical information exchange between the Parties under Articles 6 to 8 of the OPRC-HNS Protocol,

From the technological point of view, it is possible to realize the rescue of vessels in Korea through domestic technology, and to be able to carry out preemption activity through good competition between global companies and domestic companies in the case of marine casualties in the world marine countries (93 countries) There,

From the environmental point of view, it is possible to minimize damage to the marine environment through early removal of residual oil,

In terms of economy, it was entrusted to a foreign company that consume huge cost. (In 1988, 23 years after the oil tanker sunk in the sea in front of Pohang, the remaining oil was removed in 2011, And that this technology can be used as an international standard, it can save about 50% or more of the cost of recovery. In addition,

On the military side, it has the effect of making it easier and economical to deal with the disposal problems such as residual oil and salvage problems for the military ships that have been sunk, such as the sea turtle or the Cheonan.

1 is a perspective view of a dual pipe A according to a preferred embodiment of the present invention.
2 is a perspective view of a dual pipe A according to another preferred embodiment of the present invention.
3 is a schematic view of a hull floating induction device B according to a preferred embodiment of the present invention.
4 is a schematic view of a hull floating induction device B according to another preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to the description, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical concept of the present invention.

Throughout this specification, when a member is " on " another member, this includes not only when the member is in contact with another member, but also when there is another member between the two members.

Throughout this specification, when an element is referred to as "including" an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

In accordance with a preferred embodiment of the present invention, compressed air or an injection gas of a high temperature steam is supplied to an inner space of a ship, which is installed through an outer wall of a ship which has been sunk according to a preferred embodiment, And the like are discharged to the outside of the ship.

The double pipe A of the present invention includes an inner pipe 10 in the form of a hollow tube provided with a first flow path 11 through which a first fluid flows and an outer pipe 20 in the form of a hollow tube surrounding the outer circumferential surface of the inner pipe 10 And a second flow path 21 through which a second fluid flows is formed in a space between an outer circumferential surface of the inner pipe 10 and an inner circumferential surface of the outer pipe 20.

It is preferable that the first valve 12 and the second valve 22 are provided on the inner pipe 10 and the outer pipe 20, respectively, in order to control the flow of the first fluid and the flow of the second fluid.

The outer wall of the ship and the double pipe (A) are connected through a hole formed in the outer wall of the ship through a perforating process using a separate punching device. More specifically, at least one or more perforations having various sizes are formed through a hydraulic motor device or the like equipped with a perforated crown or the like on the ship body of the sunken ship. The perforation target position is mainly a fuel tank, a fresh water tank, And may be an area where seawater is intruding as an area where an air pocket can be formed by the partition wall in the sunken ship.

The location of the drilling target is usually an iron plate having a thickness of about 12 mm, and an outer wall is formed, thereby forming a hole having a diameter of 60-150 mm. The time required for this drilling is about 5 to 10 minutes, It was confirmed that it takes about 4 minutes and 30 seconds to drill a 20 mm iron plate in the drilling test.

The hydraulic pressure can produce 200 bar of hydraulic pressure from the hydro-pack, and it is desirable to employ a low speed (50-150 rpm) hydraulic motor. It is also preferable to form a torque of 100 kg or more, and a hydraulic circuit system capable of transferring and recovering high-pressure fluid required from the hydraulic pump to the hydraulic motor can be constructed.

It is possible to perform a step of preventing fluid movement between the outside and the inside of the hull by blocking all channels communicating with the outside provided on the hull, before or after the perforation is formed. Specifically, sounding pipes, inlet / outlet pipes for air vent pumps, inlet / outlet pipes for fresh water or ballast water discharge pumps, and the like are indispensably installed in various tank areas in the ship. Therefore, valves provided in such pipes must be sealed or watertightly sealed prior to supplying the pressurized fluid into the hull before or after forming the perforations.

The double pipe A of the present invention is bound through the perforations formed on the outer wall of the ship in the above manner. At this time, in order to improve the water tightness so that the double pipe (A) is correctly bound to the outer wall of the vessel and the inflow and outflow of the fluid such as the injected gas and the remaining liquid material are suppressed to the inside and outside of the vessel, 24, a stud ring 23, a binding nut 25, and an O-ring 26 may be provided.

The stud ring 23 is a member disposed on the inner side of the outer wall of the ship when the double pipe A and the outer wall of the ship are connected to each other. The diameter of the stud ring 23 gradually increases toward the rear (Tapered) so as to be widened. Thus, after the region where the stud ring 23 is mounted is pushed into the perforation by applying a certain pressure, the double pipe A bound by the rear end stopping jaw with the widest diameter is prevented from being separated again through the perforation.

The binding nut 25 may be screwed to the guide groove 24 formed along the outer peripheral surface of the outer pipe 20 as a member disposed on the outer side of the outer wall of the ship when the double pipe A and the outer shell of the ship are connected. After the stud ring 23 is inserted into the hole, the binding nut 25, which is screwed to the rear, is screwed along the guide groove 24 to form a stud ring 23) - Hull outer wall - Coupling nut (25) The three members are tightly bonded, improving the bonding force and water tightness.

The double pipe A can be fastened on the outer wall of the pierced vessel in a simple and easy manner through the stud ring 23 and the coupling nut 25 as described above and the double pipe A is detached or the water tightness So that the phenomenon that the fluid flows in and out can be prevented.

At this time, at least one O-ring 26 may be provided on the outer circumferential surface area of the outer pipe 20 between the stud ring 23 and the binding nut 25. The O-ring 26 is a ring-shaped member having a certain elasticity which is inserted into the joint portion in the form of a gasket to prevent leakage or inflow of the fluid. When the O-ring 26 is coupled with the outer wall of the hull, The region between the ring 23 and the outer shell of the ship, the region between the coupling nut 25 and the outer wall of the ship, and the like, the binding force and water tightness can be further strengthened.

The first fluid and the second fluid flow through the inner pipe 10 and the outer pipe 20 and the first fluid and the second fluid are respectively an injection gas composed of compressed air or high temperature steam, , Ballast water, or seawater.

Since the injection gas must be supplied through the internal pipe 10 or the external pipe 20 or the liquid material must be discharged, the internal pipe 10 is branched out of the external pipe 20 at a predetermined area, And it is further preferable that a first valve 12 is provided to control the flow of the internal piping 10 in the branched region after branching in the direction perpendicular to the axis of the external piping 20.

After the double pipe (A) is bound, the injection gas can be supplied into the hull to push out the remaining liquid material in the hull. Compressed air or high-temperature steam can be used as the injected gas to be supplied, and the gas injected into the interior of the vessel is pressurized by the increase of the air pressure according to the Pascal principle, thereby inducing them to be discharged to the outside of the hull. When the high temperature steam is injected into the hull, the viscosity of the low-temperature residual oil component is lowered in addition to the effect of pressurizing the liquid material in accordance with the principle of Pascal, thereby facilitating the oil discharge.

The pressure inside the hull is raised by the supplied pressurized fluid. It is preferable that the pressure is raised to 0.5 to 10 bar, the space inside the ship is hermetically sealed, and the maximum pressure in the hull is in a safe range, preferably higher than the external pressure by about 5 bar . If the internal pressure is too low, the residual liquid extraction performance due to the Pascal principle is deteriorated. If the internal pressure is excessively high, the hull tank or the facilities of the present invention may be deformed or broken due to a high pressure difference. This desirable pressure difference can be automatically controlled to accommodate changes in external pressure depending on the depth of water by adjusting the amount of fluid to be injected using the automatic equipment. More specifically, it is possible to provide a pressure control valve capable of automatically controlling the pressure by sensing a change in the depth of the hull on a tube to which the pressurized fluid is supplied.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a piping system according to a first embodiment of the present invention; FIG. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. shall.

<Double piping type of gas injection through internal piping>

1 is a perspective view of a double pipe A according to the present embodiment. In this embodiment, the injection gas supplied to the interior of the ship through the first flow path 11 of the internal pipe 10 flows, and the liquid material that is discharged to the outside of the ship through the second flow path 21 of the external pipe 20 It is a structure that flows.

At this time, it is preferable that the ratio of the diameter of the inner pipe 10 to the diameter of the outer pipe 20 is 30 to 40%, and when the ratio is less than 30%, the sectional area of the first flow path 11 is excessively narrow There is a problem that the injection of the injected gas can not be performed smoothly and the pressure load of the internal pipe 10 due to the compressed air or the like is increased. When the ratio is more than 40%, the first flow path 11 is unnecessarily widened The second flow path 21 is relatively narrowed and the flow of the discharged liquid material can not be sufficiently accommodated. Therefore, the operation time of the process of discharging the remaining liquid material through the double pipe A is excessively long.

As shown in FIG. 1, the internal piping 10 may be branched outwardly in the direction perpendicular to the axis of the external pipe 20 at a predetermined position, and may control the flow of the first flow path 11 in the branched region The first valve 12 may be provided.

The stud ring 23, the o-ring 26 and the coupling nut 25 are provided on the outer surface of the outer pipe 20 in order from the front in order to secure the binding and water tightness of the double pipe A. As described above, (24). Finally, the double pipe A is inserted and positioned such that the outer wall of the vessel, which is perforated in the region between the two O-rings 26 shown in FIG. 1, is positioned.

<Double piping type with gas injection through external piping>

2 is a perspective view of the double pipe A according to the present embodiment. In this embodiment, the injection gas supplied to the inside of the ship flows through the second flow path 21 of the external piping 20, and the liquid material discharged from the inside of the ship through the first flow path 11 of the internal piping 10 It is a structure that flows.

At this time, it is preferable that the ratio of the diameter of the inner pipe 10 to the diameter of the outer pipe 20 is 60 to 70%. If the ratio is less than 60%, the ratio of the diameter of the inner pipe 10 to the diameter of the second pipe 21 is excessively widened beyond the effective supply amount of the injection gas and the remaining liquid in the vessel can not be extracted and removed at a sufficient speed as the first flow path 11 of the internal piping 10 becomes narrow. %, The supply of the injected gas can not be performed smoothly, so that even though the first flow path 11 is relatively widely formed, the remaining liquid material can not be efficiently discharged.

As a result, the ratio of the inner diameter to the outer diameter in Examples 1 and 2 is related to the supply flow rate of the injected gas and the discharge flow rate of the remaining liquid material, and since they are connected in a posterior relationship, This is the most important part of improving work efficiency and reducing work time.

2, the inner pipe 10 may be branched from the predetermined position outwardly in the direction perpendicular to the axis of the outer pipe 20, and the first flow path 11 may be formed in the branched region, And a first valve (12) for controlling the flow of the exhaust gas.

The stud ring 23, the o-ring 26 and the coupling nut 25 are provided on the outer surface of the outer pipe 20 in order from the front in order to secure the binding and water tightness of the double pipe A. As described above, (Not shown). Finally, the double piping A is inserted and positioned such that the outer wall of the vessel, which is perforated in the region between the two O-rings 26 shown in FIG. 2, is positioned.

&Lt; Embodiment of a hull floating induction device equipped with a double pipe >

Fig. 3 shows a hull floating induction device B according to the present embodiment. The present embodiment is an embodiment in which a double pipe (A) of a type in which an injection gas is supplied through an internal pipe according to the above-mentioned first embodiment is provided.

3, the double pipe A is inserted through the perforated hull outer wall, and the injection gas is supplied separately from the outside through the injection gas supply hose 41 coupled to the outer end of the internal pipe 10 The liquid material that is pushed out by the injected gas is separately supplied to the outer end of the outer pipe 20 via the outer pipe 20 And is discharged through the liquid material discharge hose 51, However, when the discharged liquid material is the seawater intruding or the liquid which does not cause any problem even when the liquid material flows out, the liquid material discharge hose 51 can be naturally spilled in the water without having to prepare.

The injection gas may be supplied from a separately provided infusion gas supply tank 40, which may be provided on a sea surface on which the sinked vessel is located, through a separate vessel, such as a residual oil or ballast water A liquid material storage tank 50 for collecting liquid materials which can not be released naturally into seawater can be similarly provided.

On the other hand, a detachable extension hose 30 can be coupled to the inner end of the outer wall of the double pipe A. As a result, it is possible to inject compressed air and the like efficiently, but when the high-temperature steam is supplied, the contact with the liquid material can be induced and the liquid material in a maximum amount can be discharged to a low water level.

At this time, it is preferable that a strainer-shaped member or a mesh-shaped filter membrane is provided at the distal end of the outer extension hose 32 into which the liquid material flows, so as to prevent aspiration of foreign matter as much as possible. By allowing the liquid material to extend to the bottom of the region filled with the liquid material, a large amount of residual liquid can be sucked and the suction of the foreign material can be minimized.

3, the inner extension hose 31, to which the injection gas is supplied, is longer than the outer extension hose 32 so as to protrude from the distal end of the outer extension hose 32, The gas can be prevented from being sucked through the outer extension hose 32 directly.

&Lt; Embodiment 2, a hull floating induction device equipped with a double pipe &

Fig. 4 shows a hull floating induction device B according to the present embodiment. The present embodiment is an embodiment in which a double pipe (A) in which an injection gas is supplied through an external pipe according to the above-described second embodiment is provided.

4, the double pipe A is inserted through the perforated hull outer wall, and the injection gas is supplied separately from the outside through the injection gas supply hose 41 coupled to the outer end of the external pipe 20 The liquid material which is pushed out due to the injected gas is separately supplied to the outer end of the inner pipe 10 via the inner pipe 10 And is discharged through the liquid material discharge hose 51, However, when the discharged liquid material is the seawater intruding or the liquid which does not cause any problem even when the liquid material flows out, the liquid material discharge hose 51 can be naturally spilled in the water without having to prepare.

The injection gas may be supplied from a separately provided infusion gas supply tank 40, which may be provided on a sea surface on which the sinked vessel is located, through a separate vessel, such as a residual oil or ballast water A liquid material storage tank 50 for collecting liquid materials which can not be released naturally into seawater can be similarly provided.

On the other hand, the inner end of the outer pipe 20 to which the injection gas is supplied is supplied to the inside of the hull through the second flow path 21 without coupling the extension hose, So that it is sucked as in the third embodiment through the inner extension hose 31,

At this time, as in the case of the third embodiment, it is preferable to discharge the liquid material as much as possible while suppressing the suction of the foreign matter. However, there is a need to selectively remove the residual oil floating on the water surface in the inner tank of the ship It is more preferable that the inner extension hose 31 is configured to be floated above the water surface of the inner space of the hull so as to be capable of sucking and removing the floated floating oil by using a pump or an ejector.

The present invention is not limited to the above-described specific embodiment and description, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such modifications are within the scope of protection of the present invention.

A: Double piping
B: Hull floating induction device
10: Internal piping
11: First Euro
12: First valve
20: External piping
21: 2nd Euro
22: Second valve
23: Stud ring
24: Guide groove
25: Coupling nut
26: O-ring
30: Extension hose
31: Inner extension hose
32: Outer extension hose
40: Injection gas supply tank
41: Injection gas supply hose
50: Liquid material storage tank
51: Liquid material discharge hose

Claims (11)

It is installed through the outer wall of the ship to supply the injection gas consisting of compressed air or high-temperature steam to the space inside the ship to discharge the liquid material composed of fuel, fresh water or ballast water remaining in the ship to the outside of the ship In the double pipe (A)
An inner pipe (10) comprising a hollow tube provided with a first flow path (11) through which a first fluid flows and having a first valve (12) for controlling the flow of the first fluid; And
And a second valve (22) for controlling the flow of the second fluid, wherein the second pipe (22) is provided with a second channel (21) through which the second fluid flows to the outside of the outer circumferential surface of the inner pipe (10) 20);
/ RTI &gt;
Wherein the first fluid and the second fluid are the injected gas or liquid material, respectively,
A stud ring 23 disposed on the outer circumferential surface of the outer pipe 20 at an area where the outer wall of the ship and the double pipe A are bound to each other and tapered so as to be widened toward the rear, And a coupling nut (25) which is disposed on the outer side of the outer wall of the ship and is screwed to the guide groove (24) formed along the outer circumferential surface of the outer pipe (20) Double piping. The method according to claim 1,
Wherein the ratio of the diameter of the inner pipe (10) to the diameter of the outer pipe (20) is 30 to 40%, the first fluid is an injection gas and the second fluid is a liquid material. Double piping for discharge. The method according to claim 1,
Wherein the ratio of the diameter of the inner pipe (10) to the diameter of the outer pipe (20) is 60 to 70%, the first fluid is a liquid material and the second fluid is an injection gas. Double piping for discharge. The method according to claim 1,
Sectional area S1 in the direction perpendicular to the axis of the first flow path 11 of the inner pipe 10 is equal to the sectional area S2 in the direction perpendicular to the axis of the second flow path 21 of the outer pipe 20, Wherein the first fluid is a liquid material and the second fluid is an injection gas. The method according to claim 1,
At least one O-ring (not shown) provided in the region between the stud ring 23 and the coupling nut 25 on the outer circumferential surface of the outer pipe 20 so that the outer wall of the ship and the double pipe A are tightly bound together 26). &Lt; / RTI &gt; The method according to claim 1,
Characterized in that the inner pipe (10) is provided at a predetermined position so as to branch in a direction perpendicular to the axis of the outer pipe (20), and the first valve (12) is provided on the branched pipe Double piping for discharge. The method according to claim 1,
(10) and the outer pipe (20) so as to extend to the bottom side of the space inside the vessel in which the liquid material is filled, when the first fluid is an injection gas and the second fluid is a liquid material (30) having an inner extension hose (31) and an outer extension hose (32) which are formed in the inner and outer tubular portions (31, 32). The method of claim 7,
Characterized in that the inner extension hose (31) protrudes and extends beyond the end of the outer extension hose (32). The method according to claim 1,
The inner tubular inner extension hose (10) is connected to the distal end of the inner tubing (10) so as to extend to the bottom surface side of the inner space of the vessel in which the liquid material is filled, when the first fluid is the liquid material and the second fluid is the injection gas. (31) for injecting and discharging a heterogeneous fluid. The method according to claim 1,
An injection gas supply tank 40 provided separately from the inner pipe 10 and the outer pipe 20 and connected to the outer end of the ship, an injection gas supply hose 41 connected to communicate with the liquid material storage tank 50, And a liquid material discharge hose (51). The double piping for injecting and discharging a heterogeneous fluid. A hull floating induction device for removing residual liquid matter in a sunken ship equipped with the double pipe (A) of any one of claims 1 to 11.

Images