Engineers at Southwest Research Institute (SwRI) have unveiled a powerful new testing chamber that can recreate the extreme pressures found in the deepest parts of the world’s oceans.
The new facility will help researchers and companies test underwater equipment more quickly, safely, and efficiently without needing to send it thousands of meters below the ocean surface.
The newly installed pressure vessel is 30 inches in diameter and 15 feet deep, making it one of the largest and most capable systems of its kind.
It can generate pressures of up to 16,500 pounds per square inch gauge (psig), allowing scientists to simulate conditions found at full ocean depth.
Testing equipment in the actual deep ocean is often expensive, time-consuming, and risky. Engineers need to know whether underwater vehicles, batteries, sensors, and other equipment can survive crushing pressures before they are deployed.
Laboratory testing offers a much faster and safer way to evaluate performance.
SwRI has been providing deep-ocean simulation services for more than 60 years through its Ocean Simulation Laboratories. The addition of the new pressure vessel significantly expands those capabilities.
One of the most innovative features of the new chamber is its specially designed quick-acting closure system. Traditional high-pressure chambers of this size can take between 30 and 45 minutes to open or close. SwRI’s new design reduces that time to about two minutes.
This improvement means researchers can complete more tests in less time, increasing efficiency and reducing delays between experiments.
The vessel was designed by SwRI engineer Kyle Robinson and his team. According to Robinson, quick-opening systems exist on smaller pressure chambers, but they are rarely seen on vessels of this size operating at such extreme pressures.
Safety was a major focus during development. The closure system was designed to prevent alignment errors, a common issue that can create safety concerns in large pressure vessels. Engineers also performed extensive fatigue calculations and found that the chamber should operate for about 20 years before inspections for cracks are expected to become necessary.
Another useful feature is the chamber’s modular pass-through system. These connections allow engineers to run electrical cables and other links into equipment being tested while the vessel remains sealed and pressurized. Because the connections are modular, they can be changed or maintained more easily than traditional systems.
The new chamber is expected to benefit several industries. One important application is testing batteries and systems for unmanned underwater vehicles, also known as UUVs. These robotic submarines are becoming increasingly important for scientific research, defense, and offshore operations. The larger chamber allows testing of bigger vehicles and components under more extreme conditions than before.
The oil and gas industry is also expected to benefit from the expanded testing capabilities, particularly for larger and more complex subsea equipment.
Earlier this year, the pressure vessel successfully completed a proof test at more than 26,000 psi, exceeding its normal operating pressure. Since then, it has already been used in several customer projects.
With its combination of large size, extreme pressure capability, and rapid operation, the new pressure vessel gives researchers a powerful tool for developing the next generation of deep-sea technology.
