Pump control system for windmills
OwnerDon E. Averyinventor
Life of this patent
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Abstract
A windmill control system having lever means, for varying length of stroke of the pump piston, and a control means, responsive to the velocity of the wind to operate the lever means to vary the length of stroke and hence the effective displacement of the pump in accordance with available wind energy, with the control means having a sensing member separate from the windmill disposed in the wind and displaceable thereby in accordance with wind velocity.
Claims21
In a windmill having a wind driven reciprocating element operating a piston pump, a control system comprising
- lever means interposed between said reciprocating element and said pump for varying the length of stroke of the piston in said pump,
- and control means responsive to the velocity of the wind to operate said lever means to vary the length of stroke and hence the effective displacement of said pump in accordance with available wind energy,
- said control means having a sensing member separate from the windmill formed to be disposed in the wind and displaceable thereby in accordance with wind velocity.
A pump control system for windmills having a wind driven reciprocating element operating a piston pump, comprising
- a swingable arm pivotally connected to said reciprocating element and having an end adapted for pivotal attachment to a fixed supporting structure,
- said arm being formed with an elongated slot extending lengthwise thereof,
- a roller formed for rolling movement along said slot, a connecting rod having an end journalling said roller and an opposite end adapted for connection to said pump,
- a hydraulic cylinder adapted for pivotal attachment to a fixed supporting structure and having an extendable piston rod,
- a pivotal connection of the distal end of said piston rod to said connecting rod,
- said hydraulic cylinder and said piston rod lying in a plane parallel to the plane of movement of said arm wherby the distance of extention of said piston rod determines the position of said roller along said arm and hence the ratio of distance of movement of said connecting rod with respect to distance of movement of said reciprocating element,
- and control means for said hydraulic cylinder responsive to wind velocity for establishing said roller at a desired position along said arm to establish and maintain a desired length of pump stroke with respect to wind velocity.
Dependencies are inferred from the claim text.