A type selection method of anti-wear plate on the facade of hydraulic turbine control ring

Abstract

The invention discloses a model selection method of a water turbine control ring facade wear plate. The model selection method comprises the following steps of: calculating the hydrostatic stress PV = 0 = (phi / 4*d2)*Pmax / (N '* B * L) of the facade wear plate, wherein N is the total number of the facade wear plate, N 'is 2 when N is less than or equal to 14, and N' is 4 when N is more than 14, Pmax is the maximum oil pressure of a guide vane servomotor, d is the diameter of a piston rod of the guide vane servomotor, B is the width of a single facade wear plate, and L is the length of the single facade wear plate; calculating the sliding speed V = Dv / Dy * S / Ts of the facade wear plate, wherein Dy is a distance between large earholes of two control rings, Dv is the diameter of an excircle of the facade wear plate, S is a large earring stroke of the control ring, and Ts is guide vane closing time; calculating the sliding stress PV is not equal to 0V = 0.56PV = 0 * V of the facade wear plate; comparing the hydrostatic stress PV = 0 of the facade wear plate with the allowable hydrostatic stress of the selected wear plate material, and the sliding stress Pv is not equal to 0V value of the fade wear plate with the allowable sliding stress value of the selected wear plate material. The model selection method is perfect and scientific, and the safety and economy of the facade wear plate are ensured.

Description

technical field [0001] The invention relates to a type selection method for materials, in particular to a type selection method for an anti-friction plate on the facade of a water turbine guide vane control ring. Background technique [0002] combine figure 1 —— image 3 As shown, the left and right sides of the turbine guide vane control ring 1 are symmetrically provided with control ring large ear holes 2, and the two guide vane servomotors 3 are arranged on the same side of the line connecting the two control ring large ear holes 2, that is, the two guide vane relays The device 3 is arranged symmetrically in the adjacent quadrants, and on the bottom surface of the guide vane control ring 1, there are several uniformly distributed bottom anti-friction plates 4, and on the outer wall of the guide vane control ring 1, there are several uniformly distributed circumferential wear plates. Facade wear plate 5. The guide vane servomotor 3 is fed with pressure oil to operate th...

AI Technical Summary

Problems solved by technology

[0004] The present invention improves on the above-mentioned technical problems, and intends to provide a scientific and complete selection method for the anti-wear plate on the facade of the control ring of the water turbine, so as to eliminate the problem that the safety and economy of the anti-wear plate on the facade cannot be guaranteed by relying on experience selection

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