X-ray mass flow rate sensors for high pressure processes
US11629984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Apr 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An x-ray mass flow rate sensor uses a low density polymer pipe, an x-ray source, and an x-ray detector. The polymer pipe has a low density (less than 2.8 SG) and a high pressure rating (greater than 5 ksi). By using a low density polymer pipe, the sensor is able to use an x-ray source that does not require a linear accelerator and is less than or equal to 450 kV. The x-ray source and the x-ray detector are mounted on opposite sides of the polymer pipe to form a detection area that passes through the polymer pipe. A real-time calibration of the sensor is performed by detecting gray level values in a calibration region of the detection area for two reference materials placed in the detection area. The sensor may additionally include a mechanical flow rate sensor with a plurality of pistons with springs of varying spring constants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.