KR20180028806A - Apparatus for collecting liquefied natural gas - Google Patents

Abstract

Provided is a leaked fluid collecting apparatus for collecting and rapidly vaporizing a leaked fluid leaked from a cargo hold in which fluids such as LNG and the like are loaded or a flow pipeline for the fluid. The leaked fluid collecting apparatus is installed in a lower portion of the pipeline through which the fluid flows, and comprises: a receiving container having an upper side opened and a receiving space formed inside; a vaporizing member accommodated inside an accommodation space and having a larger heat transfer area than the accommodation container; and a supporter for supporting a lower portion of the container.

Description

[0001] APPARATUS FOR COLLECTION LIQUEFIED NATURAL GAS [0002]

The present invention relates to a leakage liquid collecting apparatus, and more particularly, to a leakage liquid collecting apparatus that collects and rapidly vaporizes a leaked liquid leaked from a cargo hold or a fluid pipe of a fluid such as LNG.

Liquefied natural gas (LNG) is a type of fossil fuel buried in the ground, and natural gas containing hydrocarbon as a main component is converted into a liquid state at a cryogenic temperature through pressurization and cooling processes. Liquefied natural gas is relatively easy to transport and store because its volume is greatly reduced compared to the gas state. For example, it can be transported to a remote location through a special carrier equipped with a specially designed quay to maintain the cryogenic condition.

One or more pipelines are installed in the cargo space to transport the liquefied natural gas into the cargo hold to load or load the liquefied natural gas or to discharge the cargo to the outside of the cargo hold.

If the cargo hold is damaged by any cause and the LNG leaks, the cargo hold and the hull will be damaged by the leaking liquid at minus 162 degrees Celsius. As a technique for preventing damage to the hull, Korean Utility Model Publication No. 20-2014-0004166 discloses an example of such a leakage liquid collecting device.

However, in the conventional collecting device, a collecting container formed of a heat insulating material is provided, but this is merely a function of heat insulation, and there is a problem that the leakage liquid at a cryogenic temperature must be stored in the receiving container as it is during the time of natural vaporization. This problem can further accelerate the low-temperature damage that can occur to the hull itself or the hull itself connected to the hull due to the limit of insulation if the leakage liquid is large. Accordingly, there is a demand for development of a device which can be applied to the process of transporting liquefied natural gas to quickly vaporize leaking leaking liquid, thereby minimizing low-temperature damage due to cryogenic liquefied natural gas contained in the container It is true.

Korean Utility Model Publication No. 20-2014-0004166 (Jul. 2014)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a leakage liquid collecting device for collecting and rapidly vaporizing a leaked liquid leaked from a cargo hold on which a fluid is loaded or a pipeline through which the fluid flows.

The technical problem of the present invention is not limited to the above-mentioned problems, and another technical problem which is not mentioned can be clearly understood by those skilled in the art from the following description.

A leakage liquid collecting apparatus according to the present invention comprises: a receiving container provided at a lower portion of a channel through which a fluid flows, the upper side of which is opened and the receiving space is formed inside; A vaporizing member accommodated inside the accommodation space and having a larger heat transfer area than the bottom surface of the accommodation container; And a support for supporting the lower portion of the receiving container.

The vaporization member may include at least one of a particulate material and a porous material.

The accommodating container may include an inclined portion at least a part of which is inclined, and the vaporizing member may be formed at a lower portion of the inclined portion.

The receiving container may further include at least one partition wall for partitioning the inside thereof.

And a support plate provided on the vaporizing member and made of a porous plate material.

The leaked liquid collecting apparatus according to the present invention collects and rapidly evaporates the leaked liquid leaking from the cargo hold on which the fluid is loaded or the pipeline through which the fluid flows, thereby minimizing the drift time of the leaked liquid received in the receiving container It is possible to prevent the low-temperature damage of the hull by the leaked liquefied natural gas.

1 is a perspective view illustrating a leakage liquid collecting apparatus according to an embodiment of the present invention.
2 is a state sectional view schematically showing the leakage liquid collecting apparatus of FIG. 1
3 is an exploded perspective view showing a leakage liquid collecting apparatus according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as 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 concept of the invention to those skilled in the art. To fully disclose the scope of invention to a person skilled in the art, and the invention is only defined by the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a leakage liquid collecting apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

FIG. 1 is a perspective view showing a leakage liquid collecting apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view showing an operating state of the collecting apparatus of FIG.

Referring to FIG. 1, a leakage liquid collecting apparatus 1 according to an embodiment of the present invention includes a receiving container 10 having an upper side opened and a receiving space formed inside thereof, A vaporization member 20 having a larger heat transfer area than the bottom surface, and a support base 30 for supporting the lower portion of the accommodation container. The leakage liquid collecting device is installed on the lower surface of the pipe 50 through which the fluid flows or on the lower side of the cargo hold (not shown), while being welded and fixed to the wall surface of the hull.

The vaporizing member 20 can be accommodated inside the accommodation container 10. The vaporizing member 20 is accommodated inside the accommodation space and has a larger heat transfer area than the bottom surface of the accommodation container. By using the vaporizing member 20, the surface area of the leakage liquid 100 falling into the container 10 can be widened to induce rapid vaporization of the leakage liquid 100. Hereinafter, each configuration will be described in more detail.

The receiving container 10 may include an inclined portion 11 formed at an inclined portion of at least a part of the bottom surface. The leaking portion 100 leaking from the flow channel 50 of the cargo window or fluid can be collected by the inclined portion 11 into one place by using gravity without energy consumption. The leakage liquid 100 can be received at a specific point on the bottom surface (for example, below the inclined portion of the bottom surface) by the inclined portion 11, so that the vaporization member 20 is installed only at a specific point, The vaporization of the liquid 100 can be induced.

The slope part 11 may be made of a plywood material having light insulation performance. Therefore, the weight increase of the leakage liquid collecting apparatus 1 due to the addition of the inclined portion 11 can be minimized, and the weight increase can be minimized by providing the vaporizing member 20 only under the inclined portion 11. [

In FIG. 1, at least a part of the bottom surface includes the inclined portion 11 formed to be inclined, but the present invention is not limited thereto. For example, an equal amount of vaporizing member 20 may be entirely accommodated in the receiving container 10 on a flat bottom surface, which will be described later in more detail in FIG. 3.

The receptacle 10 includes at least one partition 12 defining the receptacle 10 inwardly. When a separate partition wall 12 is formed inside the accommodation container 10 so that the accommodation container 10 is partitioned, the leakage liquid 100 stays only in the corresponding compartment of the accommodation container 10 when the fluid leaks. That is, it is possible to easily prevent the leakage liquid 100 from spreading to the entirety of the accommodation vessel 10, thereby minimizing the area where the low temperature damage of the ship can occur.

Hereinafter, with reference to FIG. 2, the leakage liquid collection process and vaporization of the leakage liquid collecting apparatus according to an embodiment of the present invention will be described in more detail.

When the fluid leaks from the cargo hold of the ship, the connecting portion of the fluid flow path 50 or the valve (not shown), the leakage liquid 100 falls in the gravity direction and reaches the inclined portion 11 of the container , Flows along the inclined portion 11 again, and is accommodated in the lower portion of the inclined portion 11 (see the arrow in Fig. 2). At this time, as shown in the figure, the leaking liquid can only advance in the direction of gravity by the inclined portion 11, and is accommodated in the inside of the accommodation container 10, particularly, under the inclined portion 11. As a result, the contact surface of the leakage liquid 100 with the air becomes wider, and the surface tension of the leakage liquid 100 is weakened by the vaporized vapor inside the gap. The leakage liquid 100 having a weak surface tension may cause vaporization more rapidly by using vaporized vapor trapped in the void as a condensation nucleus. Therefore, it is possible to vaporize more effectively when natural convection alone occurs in the natural state.

The vaporizing member 20 can collect vaporized vapor by a plurality of voids formed between a plurality of particulate materials, and can vaporize the leaked liquid 100 more quickly by using the vaporized material as a condensation nucleus. The vaporizing member 20 may be formed of at least one of a particulate material and a porous material, and any material that increases the surface area may be used. When the vaporizing member 20 is formed of a particulate material, the particles may be formed into a uniform surface or may be formed into a nonuniform surface. However, the present invention is not limited thereto. The particulate matter may be sand, basalt or the like, and preferably sand. The sand is generally easy to use because it can be procured and it has the effect of absorbing the fluid, which can prevent flooding of the leakage liquid. Further, since a plurality of voids are formed between the particles, the surface area can be efficiently increased.

In addition, the vaporizing member 20 may be formed of a porous material rather than a particulate material. In the case of a particulate substance, a porous structure is formed between the particles, but in the case of a porous substance, it is not necessarily required to be a particle. The porous material may be formed of, for example, a foamed material having a pore structure formed therein. It is also possible to use the porous material and the particulate material together as the vaporizing member 20.

3 is an exploded perspective view showing a leakage liquid collecting apparatus according to another embodiment of the present invention.

Referring to FIG. 3, the leakage liquid collecting apparatus 1 according to another embodiment of the present invention includes a receptacle 10 having an upper opening and a receiving space inside, A support plate 40 which is provided on the upper portion of the evaporation member 20 and is made of a porous plate and includes a large vaporization member 20 and a supporter 30 for supporting the lower portion of the supporter, .

The support plate 40 facilitates movement of the operator to repair the breakage of the fluid channel 50 of the cargo hold or fluid. In other words, since the support plate 40 is installed at a predetermined distance from the upper portion of the vaporizing member 20 accommodated in the leakage liquid collecting device 1, it is possible to prevent an operator from accidentally working inside the leakage liquid collecting device do. That is, the work space of the operator and the receptacle 10 accommodating the leakage liquid 100 at a cryogenic temperature can be separated to prevent contact between the leakage liquid 100 at a cryogenic temperature and the operator.

The support plate 40 has a shape in which the longitudinal plate members and the transverse plate members are arranged in a lattice form to form through holes 41 arranged at regular intervals, And prevents the leakage liquid 100 leaking from the fluid channel 50 of the hold or fluid and falling in the gravity direction from being accumulated on the support plate 40. When the leakage liquid 100 passes through the through hole 41 of the support plate 40 made of a porous plate and falls into the container 10, the vaporization member 20 accommodated in the entirety of the accommodation container 10 can quickly vaporize It happens.

Also in this embodiment, since the vaporizing member 20 having a larger heat transfer area than that of the container 10 is included, an extremely rapid vaporization effect can be provided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: leakage liquid collecting device 10: receptacle container
11: inclined portion 12: partition wall
20: evaporation member 30: support
40: Support plate 41: Through hole
50: Flow channel 100: Leakage liquid

Claims (5)

A receiving container provided at a lower portion of a channel through which the fluid flows and having an upper side opened and a receiving space formed inside;
A vaporization member housed inside the accommodation space and having a heat transfer area larger than that of the accommodation container; And
And a support for supporting the lower portion of the container. The leakage collector according to claim 1, wherein the vaporizing member is formed of at least one of a particulate material and a porous material. The container according to claim 1, wherein the container includes an inclined portion at least a portion of which is inclined,
And the vaporizing member is formed at a lower portion of the inclined portion. The leakage liquid collecting device according to claim 1, wherein the accommodating container further includes at least one partition wall defining an inside thereof. The leakage liquid collecting device according to claim 1, further comprising a support plate provided on the vaporization member and made of a porous plate material.

Images