Boots – shoes – and leggings
Patent
1987-03-26
1988-12-27
Chin, Gary
Boots, shoes, and leggings
290 43, 364550, 415148, G06F 1520, G06F 1546
Patent
active
047945443
ABSTRACT:
Method and apparatus for automatically determining the set of optimal operating angles for the variable pitch blades of a Kaplan-type turbine which has movable gates and is controlled by a governor and an electronic 3D cam. The governor controls the gates so as to maintain the turbine at a predetermined setpoint power generation level, and on-cam values of particular operating parameters of the turbine are measured. When evaluation of the measured data indicates that the turbine is in a steady-state condition, the blades are moved through a series of incremental off-cam variations in pitch. Following each incremental pitch variation of the blades, the governor repositions the gates to return the turbine to the predetermined setpoint power generation level. The operation of the turbine is then monitored, and values of particular operating parameters are measured at the new gate-blade operating point once the turbine has returned to steady-state. An efficiency value is computed for each of the measured operating points and are compared to identify a peak efficiency value.
REFERENCES:
patent: 3483364 (1969-12-01), Leeson, Jr.
patent: 3911286 (1975-10-01), Uram
patent: 3932058 (1976-01-01), Harner et al.
patent: 4400783 (1983-08-01), Locke, Jr. et al.
patent: 4427896 (1984-01-01), Waldron
patent: 4490808 (1984-12-01), Jasmin
patent: 4517468 (1985-05-01), Kemper et al.
patent: 4674279 (1987-06-01), Ali et al.
patent: 4683718 (1987-08-01), Larsson
L. H. Sheldon, "Field Testing and Optimising Efficiency of Hydro Turbines", Water Power & Dam Construction, Jan. 1982, pp. 22-28.
G. P. Erickson and J. C. Graber, "Measurment of Real Time Turbine Efficiency", Water Power & Dam Construction, Sep. 1984, pp. 15-17.
Index Metod of Testing Supplement to PTC-18, 1949 ASME Test Code for Hydraulic Prime Movers, prepared by the American Society of Mechanical Engineers.
In re Venner and Bowser (120 U.S.P.Q 192), CCPA 1958.
Albright Douglas J.
Mittendorf, Jr. George H.
Chin Gary
Teska Kevin J.
Woodward Governor Company
LandOfFree
Method and apparatus for automatically index testing a kaplan tu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for automatically index testing a kaplan tu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for automatically index testing a kaplan tu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-872357