Pump pressure control system

Pumps – Processes

Patent

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Details

417 26, 417 34, 417307, F04B 4900

Patent

active

058880518

ABSTRACT:
A system for controlling the pressure output of an engine-driven centrifugal fire pump includes a discharge pressure sensor mounted in the discharge line of the pump. A governor varies the RPM of the engine in response to pressure changes detected by the discharge pressure sensor. An electronically controlled hydraulic relief valve responsive to the discharge pressure sensor operates simultaneously with the governor to provide improved pressure control in overpressure situations.

REFERENCES:
patent: 3544235 (1970-12-01), Smith
patent: 3786869 (1974-01-01), McLoughlin
patent: 3981618 (1976-09-01), Nelson, Jr.
patent: 4047665 (1977-09-01), Moynihan
patent: 4111223 (1978-09-01), Gelnett
patent: 4189005 (1980-02-01), McLoughlin
patent: 4492525 (1985-01-01), Bilyeu
patent: 4545740 (1985-10-01), Nishikiori et al.
patent: 4550747 (1985-11-01), Woodworth et al.
patent: 4911468 (1990-03-01), Fukunaga
patent: 5067654 (1991-11-01), Paige

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