KR20170108580A - Anti rolling chock - Google Patents

Anti rolling chock Download PDF

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Publication number
KR20170108580A
KR20170108580A KR1020160032705A KR20160032705A KR20170108580A KR 20170108580 A KR20170108580 A KR 20170108580A KR 1020160032705 A KR1020160032705 A KR 1020160032705A KR 20160032705 A KR20160032705 A KR 20160032705A KR 20170108580 A KR20170108580 A KR 20170108580A
Authority
KR
South Korea
Prior art keywords
cargo tank
rotation
protruding portion
magnetic force
protrusion
Prior art date
Application number
KR1020160032705A
Other languages
Korean (ko)
Inventor
나용문
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020160032705A priority Critical patent/KR20170108580A/en
Publication of KR20170108580A publication Critical patent/KR20170108580A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • B63B2701/10—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Abstract

The anti-rotation choke according to one embodiment of the present invention includes: a protrusion protruded to one side of a cargo tank; A rotation restricting portion provided on both sides of the protruding portion so as to be spaced apart from the protruding portion and blocking rotational movement of the cargo tank; And a magnetic force device which is provided between the protruding portion and the rotation stopper portion and receives a force that the surface where the protruding portion and the rotation stopper portion face each other is separated by a magnetic force.

Description

Anti rolling chock

The present invention relates to anti-rotation chokes.

As liquefied gas emerges as an energy source, a large amount of gas is transported from the production base to the demand site in order to use this gas as energy. To do this, a liquid gas carrier (LPG carrier, LNG carrier, etc.) is used . Here, for example, the liquefied gas has a cryogenic temperature of minus so as to reduce the volume of the liquefied gas in order to increase the volume of the liquefied gas.

Such a liquefied gas carrier is a cargo hold capable of storing and storing liquefied gas and includes an independent tanker inside the hull. Independent tankers constitute an insulating structure, which reduces the transfer of the temperature of the liquefied gas to the hull.

Such an independent tanker is provided inside the hull so that it is necessary to have a structure in which the influence of freezing by the liquefied gas is reduced while the rolling and swaying motion of the independent tanker is reduced from the movement of the hull.

For this purpose, a supporting structure is required between the independent tanker and the hull. As the hull is operated on the sea surface, external forces such as twisting are applied to the support structure between the independent tanker and the hull by the movement of the hull according to the waves and the operation, There is a possibility of destruction or damage, and efforts are being made to reduce it.

In particular, independent tanks are equipped with Prismatic Cargo Tanks, which have anti-rolling chocks and anti-pitching chock support structures.

Here, the anti-rolling chocks installed in the Upper Part and the Upper Deck Transverse of the independent tanker can be arranged as the anti-rolling chocks at the bottom of the independent tanker. In case of the Pitching Condition, Care must be taken to ensure that a gap is maintained between the anti-rolling chocks so that no force is transmitted to the anti-rolling chocks. This is because the anti-rolling choke is designed to limit the lateral movement of the independent tanker, but is structurally susceptible to forces transmitted during forward and backward movement.

That is, the anti-rolling chocks are formed by a gap having a predetermined distance (about 1 mm or so) that does not move beyond a predetermined distance so as to prevent interference when the ship moves left and right, So that breakage can be prevented.

However, as the gap formed in such anti-rolling chocks is formed to be about 1 mm so as to be restrained against lateral movement, its setting distance is short and it is very difficult to control the gap when the ship is dried.

SUMMARY OF THE INVENTION The present invention has been made to improve the prior art, and it is an object of the present invention to provide a cargo tank which is supported in a cargo tank in a second direction (left and right direction) while preventing interference of the cargo tank with respect to the first direction The present invention provides an anti-rotation choke which can be easily managed in a gap formed so as to be able to be formed.

The anti-rotation choke according to one embodiment of the present invention includes: a protrusion protruded to one side of a cargo tank; A rotation restricting portion provided on both sides of the protruding portion so as to be spaced apart from the protruding portion and blocking rotational movement of the cargo tank; And a magnetic force device which is provided between the protruding portion and the rotation stopper portion and receives a force that the surface where the protruding portion and the rotation stopper portion face each other is separated by a magnetic force.

Specifically, it may further include a first reinforcing portion connecting an edge region formed between the cargo tank and the protruding portion.

Specifically, the second hull may further include a second reinforcement portion connecting an edge region formed between the hull and the rotation stopper portion.

The anti-rotation choke according to the present invention makes it easy to manage the gap formed so as to support the cargo tank in the second direction (left-right direction) while preventing the cargo tank from interfering with the first direction (The gap is maintained by the magnetic force so that it is not necessary to measure and maintain it at any time during the drying process), so that the operation strength of the ship is lowered and the drying of the ship is easy and the quality deterioration due to the gap error can be reduced.

1 is a view showing a ship on which a rotation preventing chock according to an embodiment of the present invention is installed.
Fig. 2 is a view showing A in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a ship on which a rotation preventing choke according to an embodiment of the present invention is installed, and FIG. 2 is a view showing A of FIG.

1 and 2, the anti-rotation choke 100 according to an embodiment of the present invention includes a protrusion 110, a rotation stopper 120, and a magnetic force device 130. The anti-rotation choke 100 restricts left and right movement of the ship 1 as an anti-rolling choke, but does not transmit a force when pitching occurs in the ship 1, thereby preventing breakage.

That is, the anti-rotation choke 100 has a small influence on the cargo tank 20 from the hull 10 with respect to the first direction (which can be the front-back direction with respect to the drawing and the front and back direction with respect to the longitudinal direction of the ship) The cargo tank 20 can be supported by the hull 10 so as to prevent the cargo tank 20 from moving left and right in the second direction (which may be the lateral direction with respect to the drawing and the width direction with respect to the ship) .

The anti-rotation choke 100 may be provided at an upper portion of the cargo tank 20 between the cargo tank 20 and the hull 10, but its position is limited as provided at the bottom of the cargo tank 20 But it may be applied to an anti-pitch choke (not shown) provided at the lower portion of the cargo tank 20. [ In other words, the anti-pitching choke can limit the forward and backward movement of the cargo tank 20. The anti-pitching choke restricts the movement of the cargo tank 20 in the same way as or similar to the anti-rolling choke, A gap can be formed to restrict the forward and backward movements while preventing the force from being transmitted during the left and right rotations.

In addition, the anti-rotation choke 100 applied to the present embodiment may be provided to support a cargo tank 20, which is an independent tanker provided in a liquefied gas carrier such as an LPG carrier or an LNG carrier.

Specifically, the protruding portion 110 interferes with the rotation stopping portion 120 provided opposite to both sides (left and right with reference to the drawing) of the protruding portion 110, thereby limiting both side (right and left) movements of the cargo tank 20.

For example, the protrusion 110 may protrude in the form of a box on top of the cargo tank 20. The protrusion 110 may be fixed on the cargo tank 20 by welding or the like. .

The first reinforcing part 111 may be provided on each of the left and right sides of the protruding part 110. The first reinforcing part 111 connects the corner areas formed between the cargo tank 20 and the protruding part 110 The strength can be reinforced.

The first reinforcing portion 111 may be positioned below the rotation stopping portion 120 so as not to interfere with the rotation stopping portion 120. The protruding portion 110 and the first reinforcing portion 111 may be made of steel or the like so as to maintain rigidity. The shape and material of the protruding portion 110 may be a known general technique. Is not limited.

The rotation stopper 120 is configured to limit lateral movement of the cargo tank 20 together with the protrusion 110. The gap between the rotation stopper 120 and the protrusion 110 may be about 1 mm, So that the rotation stopper 120 and the protrusion 110 are spaced apart from each other.

When the ship 1 is moved by the operation and waves of the ship 1 or the like, the rotation stopper 120 moves from the left and right sides of the protrusion 110 to the protrusion 110, So that the rotation stopper 120 restricts the left and right movement of the protruding portion 110. As a result, the cargo tank 20 can be limited in lateral movement by the rotation stopper 120.

Since the gap formed between the rotation stopper 120 and the protruding portion 110 increases the lateral movement of the cargo tank 20 as the distance between the rotation stopper 120 and the protruding portion 110 increases, , Anti-pitching choke, etc.).

Accordingly, it is preferable that the gap formed between the rotation stopper 120 and the protrusion 110 is set to about 1 mm so as to minimize lateral movement of the cargo tank 20.

The magnetic force device 130 is configured to form a gap between the rotation stopping portion 120 and the protrusion 110 and is provided between the protrusion 110 and the rotation stopping portion 120 and includes the protrusion 110 and the rotation stopping portion 120 120 face each other receive a force that is separated by a magnetic force.

That is, the magnetic force device 130 is provided on each of the surfaces of the rotation stopping portion 120 and the protrusion 110 facing each other, so that the rotation stopping portion 120 and the protrusion 110 can be prevented from coming into contact with each other.

At this time, the magnetic force device 130 can be made of a principle of pushing each other like a magnet according to the principle of the magnetic conductor. For example, the magnetic force device 130 may be formed of a magnetic field formed around the coil when electric power is generated, and the strength of the magnetic force may be proportional to the number of times the coil is wound. Therefore, the rotation stopper 120 and the protrusion 110, The magnitude of the magnetic force can be adjusted according to the specification (size, etc.) of the magnet.

Alternatively, the magnetic force device 130 may comprise a pair of N poles (or a pair of S poles) facing each other, and such a magnetic force device 130 may be disposed on each of the rotation stopping portion 120 and the protrusion 110 So that the gap can be formed by the repulsive force.

The rotation restricting portion 120 may be provided with a second reinforcing portion 121. The second reinforcing portion 121 connects the corner portions formed between the rotation stopping portion 120 and the hull 10, So that the rigidity can be reinforced. The second reinforcing portion 121 and the rotation stopping portion 120 may be made of a steel material.

As described above, according to the present embodiment, a gap (not shown) formed so as to support the cargo tank 20 in the second direction (left-right direction) while preventing interference of the cargo tank 20 with respect to the first direction So that the operation strength of the ship is lowered, so that the drying of the ship 1 is facilitated and the quality deterioration due to the gap error can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

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.

1: Ships 10: Hull
20: Cargo tank 100: Anti-rotation choke
110: projecting portion 111: first reinforcing portion
120: rotation stop portion 121: second reinforcing portion
130: magnetic force device

Claims (3)

A protrusion protruding from one side of the cargo tank;
A rotation restricting portion provided on both sides of the protruding portion so as to be spaced apart from the protruding portion and blocking rotational movement of the cargo tank; And
And a magnetic force device which is provided between the protruding portion and the rotation stopper portion and receives a force that a surface of the protruding portion and the rotation stopper portion facing each other is separated by a magnetic force. The method according to claim 1,
Further comprising a first reinforcing portion connecting the corner region formed between the cargo tank and the protruding portion. The method according to claim 1,
Further comprising a second reinforcing portion connecting a corner region formed between the hull and the rotation stopper portion.
KR1020160032705A 2016-03-18 2016-03-18 Anti rolling chock KR20170108580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160032705A KR20170108580A (en) 2016-03-18 2016-03-18 Anti rolling chock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160032705A KR20170108580A (en) 2016-03-18 2016-03-18 Anti rolling chock

Publications (1)

Publication Number Publication Date
KR20170108580A true KR20170108580A (en) 2017-09-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109850074A (en) * 2019-03-26 2019-06-07 江南造船(集团)有限责任公司 A kind of supporting system of boat-carrying independent tank
KR20200082411A (en) * 2018-12-28 2020-07-08 현대중공업 주식회사 Anti-rolling Chock and Liquefied Gas Carrier having the same
KR20220098557A (en) * 2021-01-04 2022-07-12 주식회사래티스테크놀로지 Support structure to prevent rolling and pitching of LNG tank and installation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200082411A (en) * 2018-12-28 2020-07-08 현대중공업 주식회사 Anti-rolling Chock and Liquefied Gas Carrier having the same
CN109850074A (en) * 2019-03-26 2019-06-07 江南造船(集团)有限责任公司 A kind of supporting system of boat-carrying independent tank
KR20220098557A (en) * 2021-01-04 2022-07-12 주식회사래티스테크놀로지 Support structure to prevent rolling and pitching of LNG tank and installation method thereof

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