VARIABLE SPEED FLUID JOINT
PURPOSE:To prevent the generation of hunting and to improve the controlling property of the titled joint by a method wherein in case the joint is utilized as a variable speed gear in a thermal power plant, the blades of an impeller or a turbine runner are arranged at different intervals. CONSTITUTIO...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To prevent the generation of hunting and to improve the controlling property of the titled joint by a method wherein in case the joint is utilized as a variable speed gear in a thermal power plant, the blades of an impeller or a turbine runner are arranged at different intervals. CONSTITUTION:In the case of the impeller 2 or the turbine runner 4, the blades 11 are arranged radially on the inner peripheral surface of a runner casing 10 at different intervals. As a result, the free surfaces in the blades 11 vary irregularly in a short period during the rotation of the runner so that an output torque curve corresponding to a predetermined flow pattern and indicating the average output torque of the runner 4 as a whole is obtained. In this case, the frequency of variation of the flow of a fluid is so high that the degree of variation of the rotational velocity of the runner 4 does not increases and accordingly, it is possible to vary the output side rotational velocity of the runner smoothly with respect to the variation of the position of a scoop tube 8. |
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