Detection of gas leakage
| DWPI Title: Gas leakage detection device has standard container with specified volume which is fluidically connected to vacuum manifold in order to determine volume of device under test |
| Abstract: A method of detecting leaks and measuring volumes as well as a device, the Power-free Pump Module (PPM), provides a self-contained leak test and volume measurement apparatus that requires no external sources of electrical power during leak testing or volume measurement. The PPM is a portable, pneumatically-controlled instrument capable of generating a vacuum, calibrating volumes, and performing quantitative leak tests on a closed test system or device, all without the use of alternating current (AC) power. Capabilities include the ability is to provide a modest vacuum (less than 10 Torr) using a venturi pump, perform a pressure rise leak test, measure the gas's absolute pressure, and perform volume measurements. All operations are performed through a simple rotary control valve which controls pneumatically-operated manifold valves. |
| Use: Gas leakage detection device. Uses include but are not limited to the aerospace industry, automotive industry, refrigeration industry, defense industry, oil and gas industry, semiconductor industry, renewable energy industry, petroleum industry, explosive industry, and natural gas or propane industry. |
| Advantage: Achieves a compact, lightweight, and low-cost gas leak detection device which allows easier testing and tracing gas leaks, achieves excellent electrical safety, ensures short response time, eliminates the need for a conductive power supply line, enables use in sensitive and hazardous applications and locations, minimizes the number of control valves required, eliminates redundancies, minimizes leakage or failure possibilities, and increases reliability. |
| Novelty: The device has a vacuum manifold (13) which is connected to a compressed gas source (22), a venturi vacuum pump (15), and a device under test (30). A control valve (14) controls the fluid flow through the vacuum manifold. A differential pressure gauge (17) measures the pressure difference between the vacuum manifold and the device under test. An absolute pressure gauge (16) measures the absolute pressure in the vacuum manifold. A standard container (18) with specified volume is fluidically connected to the vacuum manifold in order to determine the volume of the device under test. |
| Filed: 5/16/2012 |
| Application Number: US13473063A |
| Tech ID: SD 10710.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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