KR20200034158A - Fastening device for CGL cassette and CGL cassette mounting method - Google Patents

Abstract

Disclosed are a fastening device for mounting a CGL cassette and a CGL cassette mounting method. According to one embodiment of the present invention, the apparatus for fastening a compressed gas liquid (CGL) cassette mounted in a storage facility of a ship includes: a bulkhead support part fixed to a side wall of the storage facility and including a fastening protrusion installed therein to be movable forward and backward; and a cassette support part which corresponds to the bulkhead support part to be fixed to a side wall of the CGL cassette and in which a fastening groove corresponding to the fastening protrusion is formed. After the CGL cassette is mounted, the fastening protrusion is moved forward to be inserted and coupled into the fastening groove so that the CGL cassette can be fastened.

Description

Fastening device for CGL cassette and CGL cassette mounting method}

The present invention relates to a fastening device for mounting a compressed gas liquid (CGL) cassette and a method for loading the CGL cassette.

Natural gas (NG) is a fossil fuel mainly composed of methane, and CNG (Compressed Natural Gas), LNG (Liquefied Natural Gas), ANG (Adsorbed Natural Gas) ).

Here, CNG refers to compressed natural gas compressed with natural gas at a high pressure of 200 to 250 kg / cm2. On the other hand, LNG is made by cooling natural gas to below -161.5 ℃ and made it into a liquid state, and ANG is a compressed natural gas of 30 ~ 60kg / cm2 in adsorbents such as activated carbon.

On the other hand, recently, a light hydrocarbon solvent is mixed with natural gas or methane to produce a compressed gas liquid (CGL) product at a pressure of about 1200 to 2150 psig and a temperature of -40 ° F to -80 ° F. This technology was also developed.

When natural gas or methane is produced as a CGL product, liquefaction is performed by a solvent rather than cooling, thereby reducing the liquefaction cost and improving transportation efficiency.

As illustrated in FIG. 1, the CGL product is stored and transported in a reservoir 110 (ie, a cargo hold) of the CGL carrier 100.

The CGL carrier 100 may be, for example, a carrier having its own propulsion, or may be a barge-type carrier coupled with a tug and operated by the propulsion of the tug.

The CGL product stored and transported in the storage 110 is supplied to the separator 120 through the unloading piping for unloading treatment, and the separator 120 separates the natural gas and the solvent components, and then the natural gas is discharged to the transmission pipeline And the solvent component is discharged to a solvent recovery tower. The solvent recovery tower may be provided in the CGL carrier 100, for example.

2 is a view for explaining the CGL product production process and CGL cassette storage structure in the reservoir.

As illustrated in (a) of FIG. 2, for example, natural gas (NG) 210 and light hydrocarbon solvent (S) 220 are mixed in the mixer 230, and the mixture in the cooler 240 is exemplified. For example, it is cooled to about -40 ° F or lower to produce a liquid medium that is a compressed gas liquid (CGL) product.

CGL products can be produced, for example, at temperature conditions from about -40 ° F to about -80 ° F and pressure conditions from about 1200 psig to about 2150 psig.

The CGL product produced by cooling in the cooler 240 is shipped inside the containment pipe 260 so as to remain in a liquid state. The containment pipe 260 is formed of a stacked bundle so as to form a meander type conduit, and is supported so that the shape is maintained by the fixing frame 270 to form a CGL cassette (ie, a CGL containment cell) 250. .

Although not shown, a displacement fluid may be present in the containment pipe 260 in advance, and the displacement fluid may be replaced by a pressure control valve disposed between the containment pipe 260 and the displacement fluid storage tank. It can be processed to be transferred to the CGL product is introduced into the containment pipe 260 by replacing the displacement fluid.

The CGL cassette 250 formed including the containment piping 260 in which the CGL product is shipped is stacked in a plurality in the horizontal and vertical directions as shown in FIG. 2 (b) in the reservoir 110 provided on the CGL carrier, and each CGL The storage pipe of the cassette 250 is installed to communicate with the storage pipe 260 of another adjacent CGL cassette 250.

Since the CGL product is sensitive to temperature changes during transportation, the reservoir 110 in which the plurality of CGL cassettes 250 are loaded is filled with low-temperature nitrogen (chilled N ₂ ) in the internal space, and is formed in a low-temperature environment. 110) In order to keep the inside at a low temperature, side walls and the like are insulated.

3 is a view showing a cross-sectional view and the front / rear of the reservoir in which the CGL cassette is stored.

In mounting the CGL cassette 250 in the reservoir 110, as shown in Figure 3, the tank top of the reservoir 110 (Tank top) 112, deck (Deck) 130, side walls (Side) ( 114), fastening support (310, 330, 320) is installed in each of the front / rear walls (FWD / AFT).

Insulating foam is applied as an insulation treatment method to maintain the temperature in the reservoir 110 to -40 degrees, and after the fastening supports 310, 320, and 330 are installed in the reservoir 110 in the process, the CGL cassette 250 ) Must be mounted.

In this case, in the case of the fastening supports 310 and 330 installed on the tank top and the deck, there is no problem since the CGL cassette 250 is seated on the tank top support 310 and then the deck 130 is covered, but there is no problem. In the case of), since the side wall support portion 320 is attached to the bulkhead, there may be no tolerance, so it may not be possible to install later.

The matter described in this background art is for the purpose of understanding the background of the invention, and it cannot be concluded that it is a conventional technique well known to those skilled in the art.

Published US Patent US 2010/0000252 (Comprehensive system for the storage and transportation of natural gas in a light hydrocarbon liquid medium)

The present invention is to provide a fastening device and a CGL cassette mounting method for mounting a CGL cassette that enables mounting of a CGL cassette before mounting a deck block of a completed hull structure.

The present invention can be fastened without tolerance by filling the gap after mounting the cassette in a state where there is a certain gap between the side wall support and the cassette, and a fastening device for mounting the CGL cassette that can minimize the shaking of the cassette during further operation and It is to provide a CGL cassette mounting method.

The present invention is to provide a fastening device for mounting a CGL cassette and a method for mounting a CGL cassette, which is capable of replenishing an insulating foam through a side wall support after the cassette is fastened using the side wall support, so that the CGL cassette can be insulated for optimal temperature maintenance during CGL transportation. .

Objects other than the present invention will be easily understood through the following description.

According to an aspect of the present invention, an apparatus for fastening a compressed gas liquid (CGL) cassette mounted in a reservoir of a ship, fixed to a sidewall of the reservoir, and comprising a partition wall support portion including a fastening protrusion installed to be moved back and forth therein; And a cassette supporter fixed to the sidewall of the CGL cassette corresponding to the partition wall support, and having a fastening groove corresponding to the fastening protrusion, wherein after the CGL cassette is mounted, the fastening protrusion advances to fit into the fastening groove. Provided is a fastening device for fastening the CGL cassette.

The fastening protrusion has a cross shape when viewed from the front, and a cross-sectional shape in a direction perpendicular to the advancing direction may have a triangular shape.

The fastening groove may have a shape and size corresponding to the front portion of the fastening protrusion.

The partition wall support portion, the rear side is fixedly installed on the side wall of the reservoir, the front side is opened, the inside is empty, and the main body portion in a box shape that allows the fastening protrusion to move back and forth; It may include a cover portion for covering the front of the main body portion.

A through-hole is formed in the cover portion to allow the front portion of the fastening protrusion to pass therethrough, and the through-hole may have a shape corresponding to a cross section of a position spaced a predetermined height forward from the bottom of the fastening protrusion.

The front height of the fastening protrusion may be smaller than the width of the main body.

A piston having one end coupled to the rear surface of the fastening protrusion; It is fixedly installed on the opposite side of the side wall of the reservoir, and includes a cylinder for moving the piston forward and backward, and an injection hole through which an insulating foam injected through the other end of the piston is discharged is formed at one end of the piston. After this advancement, the fastening protrusion is fitted into the fastening groove, and then the insulating foam is injected into the empty space through the injection hole in the empty space formed in the main body so that the heat treatment of the side wall of the reservoir is performed. You can.

Or one end is coupled to the rear of the fastening projection, the insulating foam injection rod is provided with a locking piece that can be protruded and inserted into the circumferential surface; Interposed between the main body portion and the fastening protrusion, and includes a spring installed on one end of the insulating foam injection rod, in the basic state, the engaging piece protrudes so that the insulating foam injection rod counters the restoring force of the spring. The fastening protrusion is located in the main body portion, and in the fastening state, the locking piece is inserted so that the insulating foam injection rod is advanced by the restoring force of the spring to advance the fastening protrusion.

An injection hole through which the insulation foam injected through the other end of the insulation foam injection bar is discharged is formed at one end of the insulation foam injection bar, so that the insulation foam injection bar advances so that the fastening protrusion fits into the fastening groove. After the combination, the insulating foam is injected into the empty space through the injection hole in the empty space formed in the main body portion, so that the heat treatment of the side wall of the reservoir can be performed.

Other aspects, features, and advantages than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to an embodiment of the present invention, it is possible to mount a CGL cassette before mounting the deck block of the hull structure already completed.

In addition, the cassette can be fastened without tolerance by filling the gap after mounting the cassette in a state where there is a certain gap between the side wall support and the cassette, and there is an effect of minimizing the shake of the cassette even during later operation.

In addition, since the insulating foam can be replenished through the side wall support after the cassette is fastened using the side wall support, there is also an effect that the heat treatment can be performed to maintain the optimum temperature during CGL transportation.

1 is a view showing the concept of the unloading system of the CGL carrier,
2 is a view for explaining the CGL product generation process and the CGL cassette storage structure in the reservoir,
Figure 3 is a view showing a cross-section and the front / rear of the storage CGL cassette,
Figure 4 is a cross-sectional view in the basic state (a) and the fastening state (b) of the fastening device for mounting the CGL cassette of the present invention,
5 is a perspective view (a) and an exploded view (b) of the partition support,
6 is a perspective view (a), front view (b) and side view (c) of the fastening projection,
Figure 7 is a perspective view (a) and rear view (b), cross-sectional view (c) of the cassette support,
8 is a view showing a fastening process of the fastening device according to an embodiment of the present invention,
9 is a view showing a fastening process of the fastening device according to another embodiment of the present invention.

The present invention can be applied to various changes and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, terms such as “… unit”, “… unit”, “… module”, and “… group” described in the specification mean a unit that processes at least one function or operation, which is hardware or software or hardware and software. It can be implemented as a combination of.

Figure 4 is a cross-sectional view in the basic state (a) and the fastening state (b) of the fastening device for mounting the CGL cassette of the present invention, Figure 5 is a perspective view (a) and an exploded view (b) of the partition support, Figure 6 It is a perspective view (a), a front view (b) and a side view (c) of the fastening projection, and FIG. 7 is a perspective view (a) and a rear view (b) and a cross-sectional view (c) of the cassette support.

The fastening device for mounting a CGL cassette according to an embodiment of the present invention is applied to a side wall support for a side wall (side) of the above-described reservoir, and there is a certain gap between the side wall support and the cassette (particularly, the side wall of the cassette). After the cassette is mounted, it is possible to fasten without gaps by filling the gap, and it is characterized in that it is possible to minimize the shaking of the cassette during further operation.

The fastening device according to this embodiment is applied to the side wall support portion 320A installed between the side wall 114 of the reservoir and the side wall of the CGL cassette 250.

The side wall support portion 320A includes a partition wall support portion 410 installed on the side wall 114 of the reservoir and a cassette support portion 420 installed on the side wall of the CGL cassette 250.

A fastening protrusion 430 is installed in the partition wall support part 410 to be able to move back and forth, and a fastening groove 422 corresponding to the fastening protrusion 430 is formed in the cassette support part 420 so that the fastening protrusion 430 is maximized. In the case of advancing, it is possible to make a solid connection by engaging with each other.

The partition wall support portion 410 has a main body portion 412 as a basic skeleton. Depending on the embodiment, the cover portion 414 may be further included. Hereinafter, the partition wall support portion 410 will be described by assuming that the direction toward the cassette support portion 420 is forward and the direction toward the side wall 114 of the reservoir is rearward.

The main body portion 412 is fixed to the rear side wall 114 of the reservoir. And the front is opened and the inside has an empty box shape. A cover portion 414 is attached to the front surface of the main body portion 412 to prevent the fastening protrusion 430 installed inside the main body portion 412 from coming off.

The fastening protrusion 430 is installed to be movable back and forth in the inner space of the main body portion 412. The fastening protrusion 430 has a cross (+) shape when viewed from the front and a triangular shape when viewed from the side.

The fastening protrusion 430 is installed to be able to move forward and backward in the main body portion 412 so that the vertex faces forward. The front height d1 of the fastening protrusion 430 is smaller than the width w1 of the main body part 412 (d1 <w1), so that in the basic state, the fastening protrusion 430 is completely stored in the main body part 412 and is external It may not protrude (especially forward).

The cover portion 414 is formed with a through hole 416 through which the front portion of the fastening protrusion 430 can pass. The through-hole 416 may have a cross-sectional shape (ie, a cross shape) of a position P1 spaced apart from the bottom surface of the fastening protrusion 430 by a predetermined height (h, h <d1). Therefore, a part of the front of the fastening protrusion 430 passes through the through hole 416, but a part of the rear does not pass through the through hole 416, so that it can be prevented from further advancing of the fastening protrusion 430.

The cassette support 420 will be described by assuming that the direction toward the partition support 410 is backward and the direction toward the side wall of the cassette is forward.

Cassette support 420 is fixed to the front side of the cassette 250 is installed. A fastening groove 422 corresponding to the fastening protrusion 430 is formed on the rear surface of the cassette support part 420.

The fastening groove 422 may have a shape and size corresponding to a part of the front of the fastening protrusion 430. That is, when the fastening protrusion 430 is advanced, a part of the front portion thereof may be inserted and fixed into the fastening groove 422.

The fastening groove 422 may have a cross-section that is parallel to the front or rear of the cassette support 420 corresponding to the cross-section of the fastening protrusion 430, that is, a cross shape. In addition, the cross section perpendicular to the front or rear of the cassette support 420 has a triangular shape.

The cross shape of the fastening protrusion 430 and the fastening groove 422 enables solid coupling without tolerances by interlocking each other without twisting, thereby minimizing the shaking of the CGL cassette during later operation. In addition, the triangular cross-sectional shape of the fastening protrusion 430 and the fastening groove 422 facilitates the fastening process by allowing the fastening protrusion 430 to be easily inserted into the fastening groove 422.

8 is a view showing a fastening process of the fastening device according to an embodiment of the present invention.

Referring to Figure 8, the fastening device according to this embodiment is applied to the cylinder-piston structure to move the fastening protrusion 430 back and forth.

The piston 510 is coupled to the rear surface of the fastening protrusion 430. The piston 510 is moved forward and backward in the cylinder 500 fixedly installed on the opposite side of the side wall 114 of the reservoir.

When the hydraulic pressure is provided in the cylinder 500, the piston 510 is advanced, and the fastening protrusion 430 can also be advanced to fit into the fastening groove 422.

In this case, an empty space 418 is formed in the partition wall support part 410 by the advancement of the fastening protrusion 430. This is an internal space secured in advance for the advancement of the fastening projection 430.

However, due to the empty space 418, it may be difficult to maintain an optimal temperature during the CGL transportation process. Therefore, in this embodiment, by filling the insulating foam in the corresponding empty space 418, not only fastening but also insulating treatment can be made.

To this end, an injection hole 520 may be formed at one end of the piston 510, that is, an end coupled to the fastening protrusion 430.

One or more injection holes 520 may be formed within a distance corresponding to the advance distance d2 of the fastening protrusion 430 from one end of the piston 510.

After the fastening protrusion 430 is advanced, when an insulating foam gun (not shown) is connected to the other end of the piston 510 and the insulating foam is injected into the piston 510, an injection hole formed at one end of the piston 510 Through 520, the insulating foam can be injected into the empty space 418 of the partition support 410.

The insulation of the side wall portion of the reservoir can be made more robust by injection of the insulating foam.

9 is a view showing a fastening process of the fastening device according to another embodiment of the present invention.

Referring to Figure 9, the fastening device according to this embodiment is applied to the spring structure to move the fastening protrusion 430 back and forth.

An insulating foam injection rod 610 is coupled to the rear side of the fastening protrusion 430. A through hole is formed in the side wall 114 of the reservoir, and the insulating foam injection rod 610 may be coupled to the fastening protrusion 430 through the through hole.

A spring 640 may be installed at one end of the insulating foam injection rod 610 that is coupled to the rear surface of the fastening protrusion 430. Here, the spring 640 may be interposed between the rear surface of the fastening protrusion 430 and the rear inner surface of the main body portion 412.

When the fastening protrusion 430 is placed in a basic state where its vertex does not protrude out of the main body portion 412, the spring 640 is in a compressed state.

At this time, a locking piece 630 may be protruded around the periphery of the insulating foam injection rod 610 in correspondence with the rear side of the through hole formed in the side wall 114 of the reservoir. The insulating foam injection rod 610 is caught on the side wall 114 of the reservoir by the locking piece 630, so that the fastening protrusion 430 can be prevented from moving forward even when the spring 640 is compressed.

Thereafter, after the CGL cassette 250 is mounted, the fastening protrusion 430 must be advanced to fit into the fastening groove 422 of the cassette support 420. To this end, the locking piece 630 is inserted into the circumferential surface of the insulating foam injection rod 610. When the engaging piece 630 protrudes outward from the circumferential surface of the insulating foam injection rod 610 and is inserted into the circumferential surface, the force against the restoring force of the spring 640 disappears. Therefore, the fastening protrusion 430 can be advanced by the restoring force of the spring 640.

The protrusion or insertion structure of the locking piece 630 may be similar to, for example, the structure of the toggle button. Alternatively, when the engaging piece 630 is made of a material (for example, metal) that reacts with magnetic force, the engaging piece 630 is controlled to protrude or be inserted by an electromagnet (not shown) provided inside the insulating foam injection rod 610. You may.

Even in this embodiment, an empty space 418 is formed in the partition wall support portion 410 by the advancement of the fastening protrusion 430. This is an internal space secured in advance for the advancement of the fastening projection 430.

However, due to the empty space 418, it may be difficult to maintain an optimal temperature during the CGL transportation process. Therefore, in this embodiment, by filling the insulating foam in the corresponding empty space 418, not only fastening but also insulating treatment can be made.

To this end, an injection hole 620 may be formed at one end of the insulating foam injection rod 610, that is, an end coupled to the fastening protrusion 430.

One or more injection holes 620 may be formed within a distance corresponding to the advance distance d2 of the fastening protrusion 430 from one end of the insulating foam injection rod 610.

After the fastening protrusion 430 is advanced, when the insulating foam gun (not shown) is connected to the other end of the insulating foam injection rod 610 and the insulating foam is injected into the insulating foam injection rod 610, the insulating foam injection rod ( The insulating foam may be injected into the empty space 418 of the partition wall support 410 through the injection hole 620 formed at one end of the 610.

The insulation of the side wall portion of the reservoir can be made more robust by injection of the insulating foam.

According to this embodiment, the CGL cassette is mounted before the deck block of the already completed hull structure is mounted, and after the cassette is fastened using the side wall support, the insulating foam can be replenished through the side wall support to maintain the optimum temperature during CGL transportation. .

Insulation foam supplementation is an important part of the method for loading CGL cassettes. Since the insulation treatment is carried out after the completion of the hull block except for the deck block, insulation cannot be applied to the side wall support, which is a movable support. Therefore, it is because it is necessary to supplement the insulation foam on the back side after mounting the CGL cassette.

A through hole of a workable size is inserted into the side wall of the reservoir by inserting an insulating gun, and after work, it can be covered by a bolting type hatch to prevent damage and contamination. The use of hatches is for maintenance & repait.

Although described above with reference to the embodiments of the present invention, those skilled in the art variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And can be changed.

110: storage 250: CGL cassette
320, 320A: side wall support 310: tank top support
330: deck support
410: partition support 420: cassette support
430: fastening projection 422: fastening groove
412: main body portion 414: cover portion
416: through hole 500: cylinder
510: piston 520: injection hole
610: insulating foam injection rod 620: injection hole
630: Jam piece 640: Spring

Claims (8)

As a device for fastening the compressed gas liquid (CGL) cassette mounted in the ship's storage,
It is fixed to the side wall of the reservoir, the partition wall support portion including a fastening protrusion installed to be able to move back and forth inside; And
It is fixed to the side wall of the CGL cassette corresponding to the partition support, and includes a cassette support formed with a fastening groove corresponding to the fastening projection,
After the CGL cassette is mounted, the fastening protrusion advances to fit into the fastening groove to fasten the CGL cassette. According to claim 1,
The fastening projection has a cross (+) shape when viewed from the front, the fastening device having a triangular shape in a cross-sectional shape in a direction perpendicular to the forward direction. According to claim 2,
The fastening groove is a fastening device having a shape and size corresponding to the front portion of the fastening projection. According to claim 1,
The partition wall support,
A main body part having a rear surface fixedly installed on a side wall of the reservoir, a front surface open, and an empty inside, so that the fastening protrusion can be moved back and forth;
Fastening device including a cover portion for covering the front of the main body portion. According to claim 4,
The cover portion is formed with a through-hole through which the front portion of the fastening protrusion can pass,
The through hole is a fastening device having a shape corresponding to a cross section of a position spaced a predetermined height forward from the bottom surface of the fastening protrusion. According to claim 4,
A piston having one end coupled to the rear surface of the fastening protrusion;
Is fixed to the opposite side of the side wall of the reservoir, including a cylinder for moving the piston forward and backward,
An injection hole through which an insulating foam injected through the other end of the piston is discharged is formed at one end of the piston, and the empty formed in the main body after the piston moves forward and the fastening protrusion fits into the fastening groove. A fastening device that allows the insulating foam to be injected into the empty space through the injection hole in the space to insulate the side walls of the reservoir. According to claim 4,
One end portion is coupled to the rear of the fastening projection, the insulating foam injection rod is provided with a hook piece that can be protruded and inserted into the circumferential surface;
It is interposed between the main body portion and the fastening projection, and includes a spring installed on one end of the insulating foam injection rod,
In the basic state, the engaging piece protrudes so that the insulating foam injection rod is against the restoring force of the spring, and the fastening protrusion is located within the main body portion. Fastening device for advancing by advancing the fastening projections. The method of claim 7,
An injection hole through which the insulation foam injected through the other end of the insulation foam injection bar is discharged is formed at one end of the insulation foam injection bar, so that the insulation foam injection bar advances so that the fastening protrusion fits into the fastening groove. After combining, the fastening device to insulate the insulating foam into the empty space through the injection hole in the empty space formed in the main body portion to perform thermal insulation treatment on the side wall of the reservoir.

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