Fluid supply pressure control method and apparatus
US5460196A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Jun 8, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7768
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fluid supply pressure control apparatus for use in conjunction with a pressure control valve (10) of a fluid supply system is disclosed which includes: first sensor means (26, 28) for sensing the pressure of the fluid at a first point (12, 14) in the system, and first control means (16) for controlling the pressure control valve (10) to adjust the pressure of the fluid at the first point in the system in accordance with a difference between the pressure sensor by the first sensor means and a predetermined pressure valve. The apparatus further includes second control means (24) for controlling the predetermined pressure value to reduce fluctuations in the fluid pressure at a second point in the system. The aim of this apparatus is to maintain the lowest possible pressure in the supply pipes commensurate with maintaining a reasonable pressure in outlying and elevated areas and with meeting the demand for water. This provides a means of controlling water supply pressure whereby water loss through leakage is likely to be substantially reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.