Perforated plug for a control valve
US11209088B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Jun 13, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K47/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Control valves find one of their most important applications in control loops of process plants for controlling the flow rate of a gaseous or liquid medium. To this end, it is crucial that the flow rate can be reliably adjusted and that safe operation, especially with hazardous substances, can be guaranteed. To solve this problem, a hole pattern for perforated plugs (300) of control valves is proposed, which allows the densest possible arrangement of openings (220) on helical lines where the height of the helical lines is minimal and, at the same time, advantageous technical specifications and safety regulations can be taken into account. The pattern allows to generate a very smooth flow characteristic, which facilitates a reliable control of the flow rate. Moreover, the flow rate can be optimized such that the size of the moving parts of the control valve can be reduced to a minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.