TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








On development of test equipment for strengh and leak tests of submersibles designed to probe extreme depths of World Ocean



Full text article ( in russian)

Year

 
2021

Issue

 
397

Volume

 
3

Pages

 
56-64

Caption

 
On development of test equipment for strengh and leak tests of submersibles designed to probe extreme depths of World Ocean

Authors

 
Baldychev V., Linev D., Osipenko V., Tumashik G.

Keywords

 
hydrobaric tank, pressure tank, autonomous extremely deepwater submersible.

DOI

 
10.24937/2542-2324-2021-3-397-56-64

Summary

 
Object and purpose of research. The object of study is an upgradation of the unique land-based pressure tank DK- 600 of Krylov State Research Centre designed to test underwater technologies for strength and leak under external pressures from 90 to 100 MPа. The purpose is to support acceptance tests of pressure hulls and equipment for advanced manned autonomous submersibles of extreme diving depths to 11 500 m. In accordance with the world practices in development of deepwater submersibles it is required to achieve pressures of about 135–140 МPа.
Subject matter and methods.С использованием современных численных методов Preliminary calculations of strength are performed using up-to-date numerical methods (FE analysis), the choice of structural material is validated as weldable steel forgings, strength category 750–800 МPа.
Main results. The procedure and setup are suggested (Capsule DК-600) to provide the said tests by placing a special splittype intermediate Capsule capable to generate 135–140 МPа on the test object inside the pressure tank DК-600 with pressures of 85–90 МPа. The Capsule can accommodate a test object of up to 2400 mm (transverse dimension).
Conclusion. Results of an exploratory design study are presented to upgrade the unique land-based pressure tank, which would put the KSRC hydrobaric tank at the world forefront in terms of proof pressures for testing the strength and reliability of extremely deep diving submersibles measuring within 2400 mm (transverse dimension).

Rubrics

 
Naval architecture

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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