Granted Patent B2

US 12,613,004 · App. 18/025,171 · Granted Apr 28, 2026

Inventor: Jong Hyun Kim (Geoje-si, KR)

Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.

F17C9/00G01M3/02F17C2205/0323F17C2205/0352F17C2221/014F17C2221/031F17C2227/0157F17C2265/066F17C2270/0105

Abstract

Claims (35)

1 . A nitrogen compression system for a leakage test on a gas pipeline used for an engine comprising:

a nitrogen generator which is installed on a hull and generates nitrogen;

a nitrogen storage tank which stores the nitrogen generated from the nitrogen generator;

an air compressor which generates compressed air used to support starting of an engine for propelling the hull and supplies the compressed air to the engine;

an air supplier which supplies air to the air compressor;

a first diverter valve which is installed on a first diverter pipeline connecting the air supplier, the nitrogen storage tank, and the air compressor and is controlled to supply any one of air and nitrogen to the air compressor, wherein when the first diverter valve is controlled to supply nitrogen to the air compressor, compressed nitrogen compressed by the air compressor is used to purge a gas pipeline connected to the engine;

an air storage tank which stores the compressed air generated from the air compressor;

a second diverter valve which is installed on a second diverter pipeline connecting the air compressor to the air storage tank and is controlled to supply the compressed air to the air storage tank or to supply the compressed nitrogen to the gas pipeline; and

an initial purging valve interposed between the second diverter valve and the gas pipeline.

2 . The nitrogen compression system of claim 1 , further comprising a first nitrogen decompression valve which is installed on the first diverter pipeline and reduces pressure of the nitrogen supplied from the nitrogen storage tank to be supplied to the air compressor.

3 . The nitrogen compression system of claim 1 , wherein when the first diverter valve is controlled to supply the nitrogen to the air compressor, the second diverter valve and the initial purging valve are controlled to discharge the compressed air to the outside.

4 . The nitrogen compression system of claim 3 , further comprising a second nitrogen decompression valve which is installed on the gas pipeline disposed at the back end of the initial purging valve and reduces pressure of the compressed nitrogen to be supplied to the gas pipeline.

5 . The nitrogen compression system of claim 4 , further comprising a nitrogen purging valve which is installed on a nitrogen supply pipeline connecting the nitrogen storage tank to the gas pipeline and supplies the nitrogen stored in the nitrogen storage tank to the gas pipeline.

6 . A vessel comprising:

a hull;

an engine room comprising an engine for propelling the hull; and

a fuel supplying room comprising a fuel supplying system for supplying fuel gas to the engine,

wherein the engine room further comprises a nitrogen compression system for a leakage test on a gas pipeline of the fuel supplying system and wherein the nitrogen compression system comprises:

a nitrogen generator which is installed in the engine room and generates nitrogen;

a nitrogen storage tank which stores the nitrogen generated from the nitrogen generator;

an air compressor which generates compressed air used to support starting of an engine and supplies the compressed air to the engine;

an air supplier which supplies air to the air compressor;

a first diverter valve which is installed on a first diverter pipeline connecting the air supplier, the nitrogen storage tank, and the air compressor and is controlled to supply any one of air and nitrogen to the air compressor, wherein when the first diverter valve is controlled to supply nitrogen to the air compressor, compressed nitrogen compressed by the air compressor is used to purge a gas pipeline;

an air storage tank which stores the compressed air generated from the air compressor:

a second diverter valve which is installed on a second diverter pipeline connecting the air compressor to the air storage tank and is controlled to supply the compressed air to the air storage tank or to supply the compressed nitrogen to the gas pipeline; and

an initial purging valve interposed between the second diverter valve and the gas pipeline.

7 . The vessel of claim 6 , wherein the nitrogen compression system further comprises a first nitrogen decompression valve which is installed on the first diverter pipeline and reduces pressure of the nitrogen supplied from the nitrogen storage tank to be supplied to the air compressor.

8 . The vessel of claim 6 , wherein when the first diverter valve is controlled to supply the nitrogen to the air compressor, the second diverter valve and the initial purging valve are controlled to discharge the compressed air to the outside.

9 . The vessel of claim 8 , wherein the nitrogen compression system further comprises a second nitrogen decompression valve which is installed on the gas pipeline disposed at the back end of the initial purging valve and reduces pressure of the compressed nitrogen to be supplied to the gas pipeline.

10 . The vessel of claim 9 , wherein the nitrogen compression system further comprises a nitrogen purging valve which is installed on a nitrogen supply pipeline connecting the nitrogen storage tank to the gas pipeline and supplies the nitrogen stored in the nitrogen storage tank to the gas pipeline.

11 . The vessel of claim 6 , wherein the gas pipeline comprises:

a main gas pipeline which connects the fuel supplying system to the engine;

a first gas pipeline which connects the initial purging valve to the engine and supplies compressed nitrogen used to perform a leakage test before the engine starts to the engine; and

a second gas pipeline which connects the first gas pipeline to the main gas pipeline.

12 . The vessel of claim 6 , wherein the engine comprises a ME-GA (low-pressure dual fuel propulsion) engine.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (25)