KR101751848B1 - Communication system of cargo tank - Google Patents

Communication system of cargo tank Download PDF

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Publication number
KR101751848B1
KR101751848B1 KR1020150131343A KR20150131343A KR101751848B1 KR 101751848 B1 KR101751848 B1 KR 101751848B1 KR 1020150131343 A KR1020150131343 A KR 1020150131343A KR 20150131343 A KR20150131343 A KR 20150131343A KR 101751848 B1 KR101751848 B1 KR 101751848B1
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KR
South Korea
Prior art keywords
wall
cargo hold
gateway
sensor
sensors
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KR1020150131343A
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Korean (ko)
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KR20170033524A (en
Inventor
지황
류승각
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대우조선해양 주식회사
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Priority to KR1020150131343A priority Critical patent/KR101751848B1/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 
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/48—Arrangements of indicating or measuring devices
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2203/00—Communication means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The present invention relates to a cargo hold communication system capable of minimizing a cable by collecting the temperature and pressure of a cargo hold measured from a plurality of sensors at a gateway and transmitting the same to a marine automation system and securing stability in an explosion-proof area.
According to an embodiment of the present invention, a plurality of sensors mounted on a cargo hold provided in a hull by each region; And a gateway installed in each of the areas and collecting the temperature and pressure of the cargo hold measured from the plurality of sensors and transmitting the collected temperature and pressure to the marine automation system.

Figure R1020150131343

Description

{COMMUNICATION SYSTEM OF CARGO TANK}

The present invention relates to a cargo hold communication system, and more particularly to a cargo hold communication system in which the temperature and pressure of a cargo hold measured from a plurality of sensors are collected at a gateway and transmitted to a marine automation system to minimize cable lengths, The present invention relates to a communication system of a cargo hold capable of being carried out.

Natural gas is transported in the form of gas through land or sea gas piping or liquefied in the form of liquefied natural gas (LNG) or liquefied petroleum gas (LPG) It is stored on the transport and transported to the remote consumer. Liquefied natural gas is obtained by cooling natural gas at cryogenic temperatures (approximately -163 ° C), and its volume is reduced to approximately 1/600 of that of natural gas, making it well suited for long-distance transport through the sea.

LNG transports for loading LNG on land with the LNG loaded on land, or LNG RV (Regasification for loading LNG on natural gas) Vessel) includes a cryogenic storage tank of liquefied natural gas.

In recent years, demand for floating floating structures such as LNG FPSO (Floating, Production, Storage and Offloading) and LNG FSRU (Floating Storage and Regasification Unit) has been increasing steadily. LNG carrier or LNG RV And a storage tank to be installed.

LNG FPSO is a floating marine structure that is used to liquefy natural gas produced directly from the sea and store it in a storage tank and, if necessary, to transfer the LNG stored in this storage tank to an LNG carrier. In addition, the LNG FSRU is a floating type of floating structure that stores LNG unloaded from LNG carriers in offshore sea, stores it in a storage tank, vaporizes LNG if necessary, and supplies the LNG to the customer.

In this way, a storage tank (hereinafter referred to as 'cargo hold') for storing LNG in a cryogenic condition is provided in a marine structure such as LNG carrier, LNG carrier, LNG RV, LNG FPSO and LNG FSRU, Respectively.

This cargo hold can be classified as an independent type and a membrane type depending on whether the load of the cargo directly acts on the insulation. Typically, membrane-type cargo holds are divided into GT NO 96 type and TGZ Mark III type, and stand-alone cargo holds are divided into MOSS type and IHI-SPB type.

The aforementioned GT and TGZ type tank structures are disclosed in U.S. Patent Nos. 6,035,795, 6,378,722, 5,586,513, and U.S. Patent Publication No. 2003-0000949, Korean Patent Laid-open Nos. 10-2000-0011347 and 10-2000- 0011346 and the like.

1 shows an example of a conventional membrane type LNG cargo hold used for storing LNG. 1, a conventional membrane type LNG cargo hold 10 for storing LNG has a secondary insulation wall 13, a secondary sealing wall 14 on the inner wall surface 2 of the hull 1, A primary heat insulating wall 15 and a primary sealing wall 16 are sequentially laminated.

It is very important to monitor the temperature and pressure of the cargo hold because the LNG carrier with the membrane type LNG cargo holds the -163 degree liquefied natural gas in the cargo hold.

Conventional LNG carriers were sent to the ship automation system (IAS) by connecting the temperature and pressure sensors (RTD / PT) installed in the cargo hold with individual cables, so many production / design cycles were introduced.

In particular, the temperature and pressure sensors installed in the cargo hold are all connected by separate cables to transmit the analog signals to the ship's automation system (IAS), which complicates the terminal wiring work by the analog transmission method. In order to secure stability in explosion- Individual cables connecting ship automation systems had to be explosion-proof cables in accordance with EX-i requirements and cable trays had to be installed even when non-wide-width cables were used.

Therefore, it is necessary to have a cargo hold communication system which can minimize individual cables and ensure stability in explosion-proof areas.

Korean Patent Laid-Open Publication No. 2013-0056656 (2013.05.30) "Tank monitoring system of floating floating structures"

It is an object of the present invention to provide a cargo hold communication system capable of minimizing a cable and securing stability in an explosion-proof area by collecting the temperature and pressure of a cargo hold measured from a plurality of sensors at a gateway and transmitting it to a ship automation system .

According to an aspect of the present invention, there is provided a hull comprising: And a gateway installed in each of the areas and collecting the temperature and pressure of the cargo hold measured from the plurality of sensors and transmitting the collected temperature and pressure to the marine automation system.

The plurality of sensors may include a first sensor mounted on the double hull and a second sensor mounted on the secondary barrier.

The first sensor is mounted on the outer surface of the inner wall of the hull, and includes a front wall and a rear wall of the cargo hold, an upper wall and a lower wall of the cargo hold, an upper left chamfer and an upper right chamfer, A left side wall and a right side wall of the cargo hold, and a lower left side chamfer and a lower right side chamfer which are inclined from the left side wall and the right side wall, respectively.

The second sensor is mounted on the outer surface of the secondary insulation wall, and a plurality of the sensors can be mounted on the aft side lower surface of the cargo hold.

The plurality of gateways may be mounted between the outer wall of the hull and the inner wall of the hull.

Wherein the gateway comprises: a front gateway and a rear gateway for collecting signals received from a plurality of sensors mounted on the front and rear walls of the cargo hold, and a lower gateway for collecting signals received from a plurality of sensors mounted on a lower wall of the cargo hold, A left gateway collecting signals received from a plurality of sensors mounted on a left wall, upper left chamfer and lower left chamfer of the cargo hold; and a left gateway mounted on the right wall, upper right chamfer and lower right chamfer of the cargo hold And a right gateway for collecting signals received from the plurality of sensors, and a plurality of sensors mounted on the upper wall of the cargo hold may be connected to the front gateway or the rear gateway.

The ship automation system may transmit a self-diagnosis signal to the plurality of sensors via the gateway, receive the self-diagnosis result received from the sensor, and identification information of the sensor to determine whether the sensor is malfunctioning.

According to the embodiment of the present invention, the temperature and pressure of the cargo hold measured from the plurality of sensors are collected at the gateway and transmitted to the marine automation system, thereby minimizing the cable and securing stability in the explosion-proof area.

1 is a view showing an example of a conventional membrane type LNG storage tank,
2 is a view for explaining a cargo hold communication system according to an embodiment of the present invention,
3 is a view for explaining a first sensor provided on the inner wall surface of the ship,
4 is a view for explaining a second sensor installed on the outer wall of the secondary insulation wall of the cargo hold,
5 is a view for explaining a gateway installed between an outer wall surface and an inner wall surface of a hull;

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

2 is a view for explaining a cargo hold communication system according to an embodiment of the present invention.

Referring to FIG. 2, the cargo hold communication system according to the embodiment of the present invention includes a plurality of sensors 105 mounted on a cargo hold 100 provided in a hull, a plurality of sensors 105, And a ship automation system 300 for receiving and monitoring the temperature and pressure of the cargo hold 100 collected through the gateway 200 and the gateway 200.

At this time, the gateway 200 and the ship automation system 300 are individually connected by a cable C, and the communication between the gateway 200 and the plurality of sensors 105 adopts a wireless communication system.

The plurality of sensors 105 include a first sensor 110 installed outside the inner wall surface of a double hull, that is, a hull composed of an outer wall and an inner wall of the hull, and a second sensor 120 mounted on the secondary barrier.

The first sensor 110 includes a front wall 110a and a rear wall 110b of the cargo hold, an upper wall 110c and a lower wall 111d of the cargo hold, and an upper left chamfer The left side wall 110i and the right side wall 110f of the cargo hold and the lower left chamfer 110h and the upper left side chamfer 110e which are inclined from the left side wall 110i and the right side wall 110f and connected to the lower wall 110d, And the lower right side chamfer 110g.

3 shows a mounting position of the first sensor 110 well. 5, five first sensors 110 are mounted on the front wall 110a and the rear wall 110b of the cargo hold having the shape of an octagonal column, and the upper left chamfer 110j and the upper right side One first sensor 110 is mounted on the chamfer 110e and a total of twelve first sensors 110 are mounted on the inner wall surface of the hull. But is not limited thereto. As shown in FIG. 3, the first sensors 110 installed on the inner wall surface of the hull are mounted so as to be stacked on the basis of the upper wall 110c, and the first sensors 110 mounted on the front wall 110a and the rear wall 110b The five first sensors 110 are also symmetrical to each other.

The second sensor 120 is mounted on the outer surface of the secondary barrier, more specifically the secondary insulation wall, between the secondary insulation wall and the secondary sealing wall disposed on the inner wall surface of the hull.

4 shows the mounting position of the second sensor 120 well. The second sensor 120 shown in FIG. 4 is mounted on the outer surface of the secondary insulation wall of the cargo hold 100 and is mounted on the front wall 120a so as not to face the mounting position of the first sensor 110 described above A lower wall 120d which is mounted on the rear wall 120b, the upper wall 120c, the upper right chamfer 120e, the right side 120f and the lower right chamfer 120g and faces the upper wall 120c, Respectively. A plurality of second sensors 120 are mounted on the stern side and the center of the lower wall 120d.

Although the second sensor 120 is mounted near the stern side of the upper right chamfer 120e, the right portion 120f and the lower right chamfer 120g, although the second sensor 120 is not shown in FIG. 4, , The left side portion and the lower left side chamfer are mounted close to the stern side.

At this time, when the second sensor 120 is offloaded, the load is directed toward the aft end of the hull so that the residual cargo is pushed toward the stern as the cargo hold 100 is tilted. It is attached in a large amount.

In FIG. 4, it is seen that three pairs are arranged in a row on the aft side of the lower wall 120d and one pair is mounted on the center of the lower wall 120d. However, the number of the second sensors 120 is But is not limited thereto.

The first and second sensors 110 and 120 installed in the cargo hold transmit temperature and pressure sensed by the gateway 200. At this time, the first and second sensors 110 and 120 can measure the temperature and pressure of the cargo hold and use a self-diagnostic sensor.

The gateway 200 is installed at a distance that can communicate with the first and second sensors 110 and 120. The gateway 200 is installed between the inner wall and the outer wall of the hull.

5, the gateway 200 collects signals received from a first sensor 110 mounted on an inner wall surface of a hull and a second sensor 120 mounted on a second thermal insulation wall disposed on an inner wall surface of the hull, A rear gateway 200b, a right gateway 200c, a lower gateway 200d, and a left gateway (not shown).

The front gateway 200a, the rear gateway 200b, the right gateway 200c, the lower gateway 200d and the left gateway (not shown) receive the results of the sensed or self-diagnosis directly from the first sensor 110, The second sensor 120 receives the sensing result or the self diagnosis result directly from the second sensor 120 or receives the sensing result or the self diagnosis result from the first sensor 110 via the second sensor 120, May receive the sensed result or the self-advancement result through the first sensor 110.

5, the front gateway 200a includes a signal received from the first sensor 110 installed on the front wall 110a of the first sensor 110 installed on the inner wall surface of the hull and a signal received from the first sensor 110 installed on the front wall 110a, The rear gateway 200b collects signals received from the second sensor 120 installed on the front wall 120a of the secondary barrier arranged and the rear gateway 200b picks up the signal received from the rear wall 110b The signal received from the first sensor 110 installed on the rear wall 120b and the signal received from the second sensor 120 installed on the rear wall 120b among the secondary wall arranged on the inner wall surface of the ship, Of the first sensor 110 installed on the inner wall surface of the hull and the signal received from the first sensor 110 installed on the upper right chamfer 110e and the signal received from the upper right chamfer 120e , The right side portion 120f and the lower right side chamfer 120g, The lower gateway 200d collects the signal received from the second sensor 120 mounted on the lower wall 120d from the secondary barrier disposed on the inner wall surface of the hull, A left gateway (not shown) receives signals received from the first sensor 110 installed in the upper left chamfer 110j among the first sensors 110 installed on the inner wall surface of the hull, Collects signals received from the second sensor 120 mounted in the upper left chamfer, the left and lower left chamfer.

The reception signal received from the first sensor 110 installed on the upper wall 110c of the cargo hold can be implemented to be collected at the gateway of either the front gateway 200a or the rear gateway 200b.

The gateway 200 transmits the self-diagnostic signal received from the IAS 300 to the first and second sensors 110 and 120 located in the corresponding area, And transmits the diagnosis result. The first and second sensors 110 and 120 transmit the self-diagnosis result generated in response to the self-diagnosis signal to the IAS 300 via the gate weight 200 together with the sensor identification information set in advance. The IAS 300 includes a database storing the position of the cargo hold per identification information of the sensor.

The IAS 300 provides the sensor-based self diagnosis result received via the gateway 200 on the screen. Thus, it is possible to easily grasp the position of the sensor installed in the cargo hold.

As described above, since the wireless communication system between the first and second sensors 110 and 120 installed in the cargo hold and the gateway 200 is adopted, the temperature and pressure sensors (RTD / PT) The number of production / design cycles that have been injected because of the transfer can be reduced, and many cables can be saved. In particular, the self-diagnosis function of the sensor can acquire the status information of each command remotely and effectively manage the maintenance in the explosion-proof area.

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

100: Cargo hold 110: First sensor
120: second sensor 200: gateway
300: Ship Automation System

Claims (7)

A plurality of sensors mounted on the cargo holds provided in the hull; And
And a gateway installed in each of the plurality of sensors to collect temperature and pressure of the cargo hold measured from the plurality of sensors and transmit the collected temperature and pressure to the marine automation system,
Wherein the gateway comprises: a front gateway and a rear gateway for collecting signals received from a plurality of sensors mounted on the front and rear walls of the cargo hold, and a lower gateway for collecting signals received from a plurality of sensors mounted on a lower wall of the cargo hold, A left gateway collecting signals received from a plurality of sensors mounted on a left wall, upper left chamfer and lower left chamfer of the cargo hold; and a left gateway mounted on the right wall, upper right chamfer and lower right chamfer of the cargo hold And a right gateway for collecting signals received from the plurality of sensors,
A plurality of sensors mounted on an upper wall of the cargo hold are connected to the front gateway or the rear gateway,
Wherein the plurality of sensors includes a first sensor mounted on a double hull and a second sensor mounted on a secondary barrier,
Wherein the second sensor is mounted on the front wall so as not to face the mounting position of the first sensor and is mounted on the rear wall, the upper wall of the cargo hold, the upper right chamfer, the right side of the cargo hold, And a plurality of the side walls are mounted on aft-side lower wall of the cargo hold facing the upper wall. delete The method according to claim 1,
The first sensor is mounted on the outer surface of the inner wall of the hull, and includes a front wall and a rear wall of the cargo hold, an upper wall and a lower wall of the cargo hold, an upper left chamfer and an upper right chamfer, A left side wall and a right side wall of the cargo hold, and a lower left side chamfer and a lower right side chamfer which are inclined from the left side wall and the right side wall, respectively, and connected to the lower wall. delete The method according to claim 1,
Wherein a plurality of the gateways are mounted between the outer wall of the hull and the inner wall of the hull. delete The method according to claim 1,
Wherein the ship automation system transmits a self-diagnosis signal to the plurality of sensors via the gateway, receives the self-diagnosis result received from the sensor, and identification information of the sensor, and determines whether the sensor is faulty Cargo hold communication system.
KR1020150131343A 2015-09-17 2015-09-17 Communication system of cargo tank KR101751848B1 (en)

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KR1020150131343A KR101751848B1 (en) 2015-09-17 2015-09-17 Communication system of cargo tank

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KR102641411B1 (en) * 2023-10-24 2024-02-28 서울대학교산학협력단 Method for measuring sloshing pressure in liquefied fuel cargo hold considering hydroelasticity effect and method for evaluating structural safety using thereof

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