Unlock instant, AI-driven research and patent intelligence for your innovation.

Ship

A technology for ships and heat exchangers, which is applied in the field of ships and can solve the problems of limited and completely blocked external heat.

Active Publication Date: 2018-12-21
DAEWOO SHIPBUILDING & MARINE ENG CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Even when liquefied gas storage tanks are insulated, there are limitations in completely blocking external heat

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Hereinafter, embodiments of the present invention will be explained in detail with reference to the accompanying drawings. The ship according to the present invention can be widely used in applications such as ships equipped with engines fueled by natural gas and ships including liquefied gas storage tanks. It should be understood that the following examples can be modified in various ways and do not limit the scope of the present invention.

[0020] The system for treating boil-off gas according to the present invention as described below can be used in all kinds of ships and offshore structures including storage tanks capable of storing liquid cargo or liquefied gas at low temperature (i.e. ships such as liquefied gas carriers etc. and ships such as Offshore structures such as Floating Production Storage and Offloading (FPSO) or Floating Storage Regasification Unit (FSRU).

[0021] In addition, depending on the operating conditions of the system, the fluid in each pi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a ship having a liquefied gas storage tank. The ship comprises: a multi-stage compressor for compressing a boil-off gas discharged from a storage tank and comprising a plurality of compression cylinders; a second heat exchanger for heat exchanging a fluid, which has been compressed by means of the multi-stage compressor, and thus cooling same; a first decompressing device for expanding a flow (hereafter referred to as "flow a1") partially branched from the flow (hereafter referred to as "flow a") that has been cooled by means of the second heat exchanger; a third heat exchanger for heat exchanging, by means of "flow a1" which has been expanded by means of the first decompressing device as a refrigerant, the remaining flow (hereafter referred to as "flow a2") of "flow a" afterexcluding "flow a1" that has been branched and thus cooling same; and a second decompressing device for expanding "flow a2" which has been cooled by means of the third heat exchanger, wherein the second heat exchanger cools the fluid, which has been compressed by means of the multi-stage compressor, by means of "flow a2", as a refrigerant, which has been expanded by means of the second decompressing device.

Description

technical field [0001] The present invention relates to a ship, and more particularly, to a ship including a system for reliquefying the boil-off gas generated in a storage tank using the boil-off gas itself as a refrigerant. Background technique [0002] Even when a liquefied gas storage tank is insulated, there are limitations in completely blocking external heat. Therefore, the liquefied gas is continuously evaporated in the storage tank by the heat transferred into the storage tank. The liquefied gas evaporated in the storage tank is called boil-off gas (BOG). [0003] If the pressure in the storage tank exceeds a predetermined safety pressure due to the generation of boil-off gas, the boil-off gas is discharged from the storage tank through the safety valve. Boil-off gas discharged from storage tanks is used as fuel for ships, or is reliquefied and returned to storage tanks. Contents of the invention [0004] technical problem [0005] Generally, the boil-off gas ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B63B25/16F17C6/00F17C9/02
CPCB63B25/16F17C2201/052F17C13/00F17C2223/0123F17C2221/033F17C7/00F17C2223/033F17C2223/043F17C2225/0161F17C2225/0169F17C2225/033F17C2227/0157F17C2227/0339F17C2227/036F17C2227/0388F17C2265/022F17C2265/034F17C2265/037F17C2265/038F17C2265/035F17C2270/0105F17C2270/0113F25J1/0025F25J1/0202F25J1/0045F25J2230/30F17C6/00F17C9/02F17C2265/033F17C2227/0185F17C2227/0348F17C2227/0358F25J1/0277F25J1/004F17C2227/0351
Inventor 李承哲金善塡
Owner DAEWOO SHIPBUILDING & MARINE ENG CO LTD