Buoyancy Material Testing Under Abyssal Pressure and Temperature
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Solution Overview
Problem
Current methods for testing the mechanical properties of buoyancy materials in abyssal environments are inadequate, failing to provide accurate and balanced design requirements for submersibles, and do not account for real-time changes in buoyancy due to pressure and temperature variations.
Innovation Solution
An apparatus and method for testing buoyancy materials in abyssal conditions using a split-type high-pressure tank with a spherical-cage apparatus, light sensors, and a grating assembly to measure buoyancy changes under simulated deep-sea conditions, accounting for pressure and temperature variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a test method in a normal pressure environment is used to test the buoyancy material, then the testing process is simple, but real process data of a change in the net buoyancy in the abyssal environment cannot be obtained
Solution Approach 1:
A high-pressure tank is introduced as an intermediary device to simulate the abyssal environment. The tank creates a controlled high-pressure and low-temperature environment inside, allowing the buoyancy material to be tested under conditions that mimic the deep sea without requiring actual deployment at depth. This mediator enables accurate measurement of net buoyancy changes while keeping the testing process manageable.
2Ease of operation
If the water absorption property is measured by weighting and metering method after pressure release, then the measurement process is simple, but the water absorption property under real compressed condition cannot be obtained
Solution Approach 1:
The weighing and measurement instruments are pre-installed inside the high-pressure tank before pressurization. This allows the buoyancy material to be weighed and measured while still under compressed conditions, rather than after pressure release. The preliminary setup ensures that measurements reflect the actual state of the material in the deep sea environment, providing accurate water absorption properties under compression.
3Device complexity
If the buoyancy material is tested without considering temperature effects, then the testing procedure is simplified, but the pressure resistance and water infiltration characteristics cannot be accurately evaluated
Solution Approach 1:
The high-pressure tank integrates multiple environmental simulation functions into a single device. It simultaneously provides high-pressure conditions, low-temperature control, and measurement capabilities for buoyancy and water absorption. By merging these functions, the system can evaluate pressure resistance and water infiltration characteristics under combined temperature and pressure effects without requiring separate testing procedures, thus maintaining reasonable complexity while improving measurement accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables systematic measurement of buoyancy changes under simulated abyssal conditions, providing a basis for balanced submersible design and improving safety and control during deep diving operations.
Implementation Method 1
a metering tension spring
Implementation Method 2
a metering tension spring
Implementation Method 3
A light sensor and a light source are respectively disposed on two sides of the grating assembly
Implementation Method 4
A buoyancy material used in the submersible is a pressure-resistant material whose density is lower than that of a work environment medium and that is assembled on the submersible, and provides the submersible with buoyancy required for underwater balance
Data Source
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AI summary
An apparatus for testing a mechanical property of a buoyancy material in an abyssal environment and a test method are provided. The apparatus includes a split-type high-pressure tank. An independent tester is fixedly mounted inside the high-pressure tank. The tester includes a rack fixed inside the high-pressure tank by using mounting screws. A base is disposed on an upper surface of the rack. A column is vertically mounted to the base. A guide key is mounted to the column. A spherical-cage apparatus is mounted at a top of the column by using a ball holder. A spherical test piece is disposed inside the spherical-cage apparatus. A bottom of the spherical-cage apparatus is connected to a grating assembly by using a hook. A guide mechanism and a support are respectively mounted at a middle part and a lower part of the column. A light sensor and a light source are respectively disposed on two sides of the grating assembly. A bottom of the grating assembly is connected to the base by using a metering tension spring. Therefore, the mechanical property of the buoyancy material can be conveniently tested, to provide a new and effective method for performing technical judgment on the buoyancy material used in the abyssal environment, determining an effect generated in research of the buoyancy material, satisfying a balanced design requirement of a submersible, and the like.