KR20170024696A - Water curtain system - Google Patents

Water curtain system Download PDF

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Publication number
KR20170024696A
KR20170024696A KR1020150120023A KR20150120023A KR20170024696A KR 20170024696 A KR20170024696 A KR 20170024696A KR 1020150120023 A KR1020150120023 A KR 1020150120023A KR 20150120023 A KR20150120023 A KR 20150120023A KR 20170024696 A KR20170024696 A KR 20170024696A
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KR
South Korea
Prior art keywords
water
steam
supply line
unit
jetting
Prior art date
Application number
KR1020150120023A
Other languages
Korean (ko)
Other versions
KR101762590B1 (en
Inventor
여종수
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150120023A priority Critical patent/KR101762590B1/en
Publication of KR20170024696A publication Critical patent/KR20170024696A/en
Application granted granted Critical
Publication of KR101762590B1 publication Critical patent/KR101762590B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/08—Fountains
    • B05B17/085—Fountains designed to produce sheets or curtains of liquid, e.g. water walls
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D9/00—Apparatus or devices for transferring liquids when loading or unloading ships
    • B67D9/02—Apparatus or devices for transferring liquids when loading or unloading ships using articulated pipes

Abstract

A water curtain system is disclosed. The water curtain system includes a water injection unit that performs water injection to a target area of a predetermined outer wall of a hull; And a steam injection unit for performing steam injection on the target area.

Description

Water curtain system

The present invention relates to a water curtain system.

And the development of arctic oilfields, etc., there is a growing demand for the development of carriers for cryogenic liquid cargoes for polar operation.

In the case of a liquid cargo carrier for polar operation, for example, when liquid cargo such as LNG is leaked and buried in the hull, brittle fracture may occur on the outer shell of the hull. Therefore, For example, seawater, fresh water, etc.) using water curtain systems.

1 shows a water curtain system according to the prior art. 1 (a) is a front view of the operation state of the water curtain system, and FIG. 1 (b) is a side view.

As shown in FIG. 1, a water curtain system 110 (shown in FIG. 1) is provided to protect a hull around a loading arm installed at one side of a cryogenic liquid cargo carrier 100 (hereinafter referred to as an LNG carrier for convenience) from LNG leakage. ) Are installed.

The water curtain system 110 is installed on the basis of the upper deck 111a of the LNG carrier 100 so as to supply water downward to the hull outer wall 111b.

To this end, water is supplied to the water curtain pipe 112 through the water transfer line, and the supplied water is supplied to the bottom of the water curtain pipe 112 through a water discharge hole 13 formed at predetermined intervals along the longitudinal direction And flows downward.

However, when the water curtain system 110 is used in an extreme environment or conditions (for example, minus 2 degrees Celsius, minus 40 degrees Celsius of atmospheric temperature), when seawater flows along the hull outer wall 111b, It can not freeze down and can freeze.

When the water is frozen in the outer shell 111b of the ship, the function of protecting the outer shell of the ship can not be performed.

Korean Patent No. 10-1138338 (Water curtain apparatus and LNG carrier including the same)

The present invention is intended to provide a water curtain system in which a water curtain system can be normally operated even under extreme environments and conditions, so that a hull can be safely protected even when a cryogenic liquid cargo flows out.

The present invention is to provide a water curtain system that allows a water curtain system to operate normally even when the water jet nozzle is frozen and clogged.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a watercraft comprising: a water jetting unit that performs water jetting to a target area of a hull outer wall predetermined for water curtain processing; And a steam jetting unit for performing steam jetting on the object area.

The steam injection unit may include a plurality of steam injection nozzles for spraying steam supplied through a steam supply line, and the plurality of steam injection nozzles may be installed to have a spray angle for spraying steam to the target area have.

A water supply line for supplying water to be sprayed through the water injection nozzle of the water injection unit is provided with a pressure sensing means and the steam injection nozzle is connected to the steam supply line via a rotary part, When the pressure value provided from the steam injection nozzle is equal to or greater than a predetermined threshold value, the rotation of the rotary part can be controlled so that the jet port of the steam jet nozzle faces the water jet nozzle.

The steam supply line is provided with at least one valve provided with a motor for providing a driving force for performing opening and closing operations, and a water supply line for supplying water to be sprayed through the water spray nozzle of the water spray unit is provided with a pressure sensing means And the valve is operable to cause the motor to generate a driving force for opening the steam supply line when the pressure value input from the pressure sensing means is equal to or greater than a predetermined threshold value.

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

According to the embodiment of the present invention, the water curtain system can be normally operated even under extreme environments and conditions, so that the ship can be safely protected even when the cryogenic liquid cargo flows out.

In addition, there is also an effect that the water curtain system can be normally operated even when the water injection nozzle is frozen and clogged.

1 shows a water curtain system according to the prior art;
2 illustrates a water curtain system in accordance with an embodiment of the present invention.
3 is a view illustrating an installation of a steam injection nozzle according to an embodiment of the present invention;
Figures 4 and 5 illustrate a water curtain system in accordance with further embodiments of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a view showing a water curtain system according to an embodiment of the present invention, and FIG. 3 is a view illustrating an installation form of a steam injection nozzle according to an embodiment of the present invention.

Referring to FIG. 2, the water curtain system may include a water injection unit, a steam injection unit, and a control unit 250.

The water injection unit may include a water reservoir 210, a pump 215, a first valve 220, a pressure unit 225, and a water injection unit.

The water reservoir 210 stores water to be jetted from the water jetting section for performing the water curtain function. The water reservoir 210 may be one or more of, for example, a ballast tank, a seed chest, a fresh water storage tank, and the like.

The pump 215 pressurizes the water stored in the water reservoir 210 through the water supply line under the control of the control unit 250 at a predetermined pressure or pump operating pressure and supplies the pressurized water to the pressurizing unit 225.

The first valve 220 operates to open and close the water supply line under the control of the controller 250. The first valve 220 may be a solenoid valve that can be electronically controlled by the controller 250, for example. 2 illustrates the case where the first valve 220 is disposed between the pump 215 and the pressurizing portion 225 but the first valve 220 is disposed between the water reservoir 210 and the pump 215 It is possible. Of course, in addition to the first valve 220, the water supply line may be further provided with one or more valves which are controlled by the controller 250.

The pressurizing portion 225 may be, for example, a pressure tank or a pressure vessel, and supplies the water supplied from the water reservoir 210 to the water jetting portion at a predetermined pressure.

Here, if the pump 215 desires to inject water through the water injection part without applying additional pressure to the water supplied through the water supply line at a predetermined pressure, the pressing part 225 may be omitted.

The water injection part may include a header part 230 and a plurality of water injection nozzles 235.

The header portion 230 may be coupled to an upper end portion of a supporting structure having a lower end coupled to a left deck or starboard upper deck of the ship.

A plurality of water injection nozzles 235 arranged at predetermined intervals along the longitudinal direction of the header unit 230 are installed at the bottom of the header unit 230 and the water introduced into the header unit 230 through the water supply line Is discharged in a downward direction through a plurality of water injection nozzles 235.

The steam injection unit may also include a steam reservoir 260, a pressurization device 265, a second valve 270, and a plurality of steam injection nozzles 275. However, the pressurizing device 265 may be omitted as described later.

The steam reservoir 260 supplies the steam supplied to the steam injection nozzle 275 through the steam supply line. The steam reservoir 260 may be, for example, a boiler or the like, and may be shared with a steam supply system already provided in the vessel.

Under the control of the control unit 250, the pressurizing unit 265 pressurizes the steam supplied from the steam reservoir 260 through the steam supply line to a predetermined pressure or a pump operating pressure to supply the steam to the plurality of steam injection nozzles 275 .

The pressurizing device 265 may be omitted when steam is generated in the boiler or the like and is injected at a constant pressure. Of course, it is natural that a pressurizing device 265 may be provided if supply and / or injection of steam is required beyond the pressure generated or provided in the boiler or supplied through the steam supply line.

The second valve 270 operates to open and close the steam supply line under the control of the controller 250. The second valve 270 may be, for example, a solenoid valve that can be electronically controlled by the controller 250.

2 illustrates the case where the second valve 270 is disposed between the pressurizing device 265 and the steam injection nozzle 275. The second valve 270 is disposed between the steam reservoir 260 and the pressurizing device 265 As shown in FIG. Of course, in addition to the second valve 270, the steam supply line may further include one or more valves that are controlled by the control unit 250. [

The plurality of steam injection nozzles 275 inject steam of a predetermined pressure supplied through the steam supply line to the outer wall of the hull, which is a predetermined area requiring water curtain processing.

Each of the steam spray nozzles 275 is installed at an angle for effectively spraying steam to the hull outer wall area where water curtain processing is required, as illustrated in Fig.

In FIG. 3, it is exemplified that two steam spray nozzles 275 are installed at an angle of 35 degrees with respect to the horizontal plane, and the other two steam spray nozzles 275 are respectively installed at an angle of 45 degrees with respect to the horizontal plane have. However, the installation angles of the respective steam spray nozzles 275 may be varied according to need, and the installed quantity may be appropriately determined.

Referring to FIG. 2 again, when it is requested to start operation of the water injection unit for water curtain processing, the control unit 250 performs the operation start of the pump 215 and the on-operation control of the first valve 220, Not only the start of the operation of the pressurizing device 265 but also the control of the on-operation of the second valve 270 is started so that the water injection is started.

This has the advantage that water sprayed by the water spray unit can be effectively prevented from freezing on the outer wall of the hull.

4 and 5 are views showing a water curtain system according to another embodiment of the present invention. 4 and 5 illustrate the pressurizing device 265. However, as described above, when the steam is generated in the boiler or the like and is sprayed at a constant pressure, the pressurizing device 265 may be omitted. Of course, it is natural that a pressurizing device 265 may be provided if supply and / or injection of steam is required beyond the pressure generated or provided in the boiler or supplied through the steam supply line.

4, the steam injection nozzle 275 is coupled to the steam supply line by interposing the rotation part 410 operated and controlled by the control part 250. In addition, And the water supply line is provided with a pressure sensing means 420 (for example, a pressure sensor, a pressure transmitter, a PT) for sensing the pressure in the supply line and providing sensing information to the control unit 250 .

Although it is assumed in FIG. 4 that the pressure sensing means 420 is located between the pressing portion 225 and the first valve 220, one or more pressure sensing means may be installed at any position on the water supply line .

In this case, if water is being supplied to the water jetting side through the water supply line, but the water jetting nozzle 235 is freezing and the water is not normally sprayed, the pressure in the water supply line will be continuously increased .

The control unit 250 controls the rotation of the rotation unit 410 so that the jet port of the steam jet nozzle 275 is directed toward the jetting port side of the water jetting nozzle 235 when the pressure value input from the pressure sensing unit exceeds a predetermined threshold value It is possible to eliminate freezing of the jet opening of the water jetting nozzle 235. [

Accordingly, even when the water spray nozzle 235 is clogged by icing, it is possible to maintain the normal operation state of the water curtain unit.

5, the water curtain unit illustrated in FIG. 5 includes a pressure sensing means 420 (see FIG. 5) for sensing the pressure in the supply line to the water supply line and providing sensing information to the second valve 270 For example, a pressure sensor, a pressure transmitter (PT), etc.).

In this case, the second valve 270 provided in the steam injection line receives the pressure value from the pressure sensing means 420 installed in the water supply line, and when the pressure value equal to or higher than the predetermined reference value is received, (Open) state in which the motor provided to correspond to the motor is driven.

In this case, the operation of the second valve 270 is not controlled by the controller 250, but is operated in conjunction with the on / off operation of the first valve 220.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

100: Cryogenic liquid cargo carrier 110: Water curtain system
111a: Upper deck 111b: Hull outer wall
112: Water curtain pipe 113: Water discharge hole
210: Water reservoir 215: Pump
220: first valve 225:
230: header portion 235: water injection nozzle
250: control unit 260: steam storage
265: Pressurizing device 270: Second valve
275: Steam injection nozzle 410:
420: pressure sensing means

Claims (4)

A water jetting unit that performs water jetting to a target area of a predetermined outer wall of the hull; And
And a steam jetting unit for performing steam jetting on the target area. The method according to claim 1,
The steam jetting unit includes:
And a plurality of steam spray nozzles for spraying steam supplied through the steam supply line,
Wherein the plurality of steam injection nozzles are installed to have a spray angle for spraying steam to the target area. 3. The method of claim 2,
Wherein the steam injection nozzle is connected to the steam supply line via a rotary part,
A pressure sensing means provided on a water supply line for supplying water to be sprayed through the water spray nozzle of the water spray unit; And
Further comprising a control unit for controlling the rotation of the rotary unit such that the jet port of the steam jet nozzle faces the water jet nozzle when the pressure value provided from the pressure sensing unit is equal to or greater than a predetermined threshold value. 3. The method of claim 2,
The steam supply line is provided with at least one valve provided with a motor for providing a driving force for performing opening and closing operations,
Further comprising a pressure sensing means provided on a water supply line for supplying water to be sprayed through the water spray nozzle of the water spray unit,
Wherein the valve is operated to cause the motor to generate a driving force for opening the steam supply line when the pressure value input from the pressure sensing means is equal to or greater than a predetermined threshold value.
KR1020150120023A 2015-08-26 2015-08-26 Water curtain system KR101762590B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150120023A KR101762590B1 (en) 2015-08-26 2015-08-26 Water curtain system

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KR20170024696A true KR20170024696A (en) 2017-03-08
KR101762590B1 KR101762590B1 (en) 2017-07-28

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KR102011969B1 (en) 2016-12-29 2019-10-21 주식회사 미라클스페샬시스템 3D Water Drop Sculpture Generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101138338B1 (en) 2010-05-31 2012-04-26 삼성중공업 주식회사 Water curtain apparatus and lng ship

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Publication number Priority date Publication date Assignee Title
KR101326081B1 (en) * 2013-07-29 2013-11-07 김수정 Ice melting apparatus for ship voyage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101138338B1 (en) 2010-05-31 2012-04-26 삼성중공업 주식회사 Water curtain apparatus and lng ship

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