The above mentioned limit switches (not shown) that are disposed on the gear track flange 554 fix the extreme angles between the axis 486 and the direction 429 in the same manner that limit switches were used to fix the extreme dispositions of the shield 26 with respect to the direction 28 of the wind in the power plant 10. In particular, one limit switch is positioned such that, in one extreme disposition of the propeller assembly 414, the blade assembly 420 faces directly into the wind resulting in maximum coupling of the blade assembly 420 to the wind. In this manner, the coupling of the blade assembly 420 to the wind is increased to counteract the decrease in wind force, resulting in a return of the rotation rate of the blade assemblage 420 to the preselected control range. As the lull commences, the effect of the wind on the blade assembly 420 decreases resulting in a decrease in the rotation rate thereof.
Fisioterapia A Domicilio
It is also an object of this invention to provide a wind driven power generation system in which the construction thereof makes extensive use of light weight truss structures positioned by cables to form rigid wind interception and control components. The position of the shield is determined by the relative orientations of the vane and the shield and this orientation is, in turn, determined by the rotation rate of the rotor via the use of a mechanical governor mounted on the rotor and interacting with the vane. 9. Illustrated portions of the other blades have been numbered identically with corresponding portions of the blade 422 which has been illustrated. While such windmills have proven to be effective means of accomplishing the tasks for which they are designed, they do not have the characteristics necessary for their inclusion in a power distribution grid.
This decrease in the rotation rate of the rotor assembly 14 will be transmitted via the power transmission belt 210 and the speed increaser 50 to the rotation rate control system 48. As a result, the pumping rate of the pump 310 in the hydraulic circuit of the rotation rate control system 48 will decrease resulting, in turn, in a decrease in the fluid pressure in the pressure tank 316. Accordingly, the low pressure switch 322 will be actuated to transmit an electrical signal to the electrical motor 308 in the gear drive 302. The gear drive 302 will drive the cog 304 to move the shield assembly 16 about the axis 20 in a counterclockwise direction as seen from above the wind driven power plant 10. The repositioning of the shield assembly 16 will increase the exposure of blades 22 extending in the direction 32 to the wind to compensate for the reduced speed of the wind, thereby returning the rotation rate of the rotor assembly 14 to a value within the control range.
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Since the high pressure switch 320 is of the normally open type, its non-actuation interrupts the electrical circuit of which it is a part. Accordingly, an increase in the pressure differential across the orifice 316 must be effectuated by an increase in the absolute fluidic pressure on the inlet side of the orifice 318; that is, by an increase in the absolute fluidic pressure in the pressure tank 316. Thus, the manual set orifice 318 converts fluid flow rates in the hydraulic circuit to absolute pressure values in the pressure tank 316. Dolor de espalda y pecho derecho . It is to effect this conversion that the pump 310 is of the positive displacement type. As the lull commences, the effect of the wind on the rotor assembly 14 decreases resulting in a decrease in the rotation rate thereof.