(19)
(11) EP 0 140 499 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.07.1986 Bulletin 1986/29

(43) Date of publication A2:
08.05.1985 Bulletin 1985/19

(21) Application number: 84305463

(22) Date of filing: 10.08.1984
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 07.10.1983 US 539773

(71) Applicant: THE BABCOCK & WILCOX COMPANY
 ()

(72) Inventors:
  • Dziubakowski, Donald
     ()
  • Shaffer, Jeremiah
     ()
  • Keyes, Marion A.
     ()

   


(54) Compressor surge control


(57) A surge control system (18) for a compressor anticipates the actual surge condition and initiates anti-surge protection in proportion to the magnitude of the anticipated surge condition. This is done by providing a feed forward signal from a control station (20) to a summing station (48), along with a normally generated surge control line point, to offset this point by an amount determined by the feed forward signal. The offset point is used as an input to a controller (56) for controlling a bypass valve (28) in a bypass loop around the compressor.






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