Improvements relating to labyrinth packings

Abstract

Abstract 380,886. Stuffing-boxes; turbines. WITKOWITZER BERGBAU-UND EISENHœTTEN-GEWERKSCHAFT and BEYER, W., 10, Mõhr, Ostrau, Vitkovice-zelezarny, Czecho-Slovakia. July 20, 1931, No. 20713. Convention date, July 24, 1930. [Classes 110 (i), 110 (iii), and 122 (v).] A chamber 7 arranged between a labyrinth packing 5 and the saturated steam space of e.g. a steam circulating pump 1 is supplied with superheated steam through a passage 8. A further labyrinth packing 9, 13 is arranged between the saturated and superheated steam spaces and in communication with the former through a byepass 11. Leak-off steam from the pockets b, c is led to a corresponding stage of the turbine operating the pump and to a feed heater respectively. Specification 222,823, [Class 123 (ii), Steam generators], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes a steam plant, Fig. 2 (Cancelled), wherein a pump 3 driven by a turbine 18 supplies steam from a generator 35 to a superheater 38 feeding a turbine 24. A superheater 19 is arranged between the second and third stages of the latter and steam from the second stage together with the leak-off from the pocket b of the pump packing is utilized in the turbine 18. Exhaust from the latter together with leakage from the pocket c passes to a feed heater 20 supplying a further heater 31 feeding the generator 35. Packing steam for the pocket 7 of the pump 3 is taken from the superheater 38. This subject-matter does not appear in the Specification as accepted.

Inventors

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