Forward and reverse bidirectional flow rate measurement method for subsea chemical agent injection device
US12411030B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2024 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Aug 27, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17D3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A forward and reverse bidirectional flow rate measurement method for a subsea chemical agent injection device is provided. The device includes a device body, a flow channel is formed inside the device body, the device body includes an agent input connector, a pressure reduction member, a needle valve assembly, and an agent output connector that are sequentially communicated through the flow channel; and the method is implemented by: calibrating forward and reverse flow of agents at different openings and flow rates, then obtaining differential pressures before and after the agents flow through the needle value assembly; fitting relationships between the flow rates and the differential pressures at different openings to obtain a plurality of arrays of opening-flow coefficients; then fitting relationships between the flow coefficients and the needle valve openings to establish a formula for the flow rate and the opening-differential pressure, and finally performing the measurement in real time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.