Metal diaphragm couplings

Calistrat, M.M., Metal Diaphragm Coupling Performance, Proceedings of the 5tli Turbomacliinery Symposium, Texas A M University, pp. 117-123, October 1976. 

The torsionally soft or resilient coupling such as the quill shaft and the metal-metal resilient transmit torque can handle misalignment through springs, metal strips, coils, disks and diaphragms, They will tune the system by changing the spring constant K. 

The experiments are generally conducted by putting the aqueous solution, or suspension, of amine, coupling component— preferably in the form of a soluble salt—and nitrite, in equi-molecular proportions, in the anode chamber, which is suitably separated from the cathode chamber by a diaphragm. Platinum is the best anode material any suitable metal can serve as cathode. The current conditions chosen may vary greatly—from 50-600 amp. per square meter of anode surface. It is very important that the anode fluid be stirred during the whole experiment. 

As mentioned previously, the vacuum-deposited diaphragm developed in 1928, coupled with the vertical finger anode-cathode construction, initiated the Hooker S series cell. The S type cell continued until 1966, when the single C-60 cell was introduced. In 1970, the H series cell was introduced, with metal anodes replacing the graphite anodes. A summary of the major innovations in Hooker diaphragm-cell design is presented in Table 2.1. 

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