System for sealing passages in the walls of glandless circulatin

Details System for sealing passages in the walls of glandless circulatin System for sealing passages in the walls of glandless circulatin

1982-01-06

1984-03-13

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

With fluid-condition responsive and/or indicating means

174 18, 174152R, H01B 1730

Patent

active

044369506

ABSTRACT:
The passage in a wall which separates the interior of the housing of a glandless submersible motor pump from the surrounding atmosphere is normally sealed by an annular seat which is placed against the end face of a muff forming a detachable part of the wall, and by a temperature- and pressure-resistant ceramic sleeve which surrounds an elongated metallic conductor and normally bears against the seat owing to the pressure differential between the interior of the housing and the surrounding atmosphere. If the sleeve is destroyed, a normally confined plunger of the conductor bears directly against the seat to prevent escape of fluid from the pump housing. That end portion of the conductor which extends into the housing is surrounded by one or more layers of insulating tape and by a tubular sheath which is shrunk onto the tape and exhibits at least some thermal-shock-absorbing characteristics. The plunger bears against an O-ring which prevents leakage of fluid into the space between the peripheral surface of the conductor and the internal surface of the sleeve. Additional O-rings and/or layers of temperature-resistant cement are interposed into the path or paths of potential escape of fluid from the interior of the pump housing.

REFERENCES:
patent: 2651672 (1953-09-01), Ivanoff
patent: 2718543 (1955-09-01), Lidderdale
patent: 4117254 (1978-09-01), Richter
patent: 4227043 (1980-10-01), Stohr et al.
(S 3047 0015), Franke, H. F., "Eine Zerlegbare Hochvakuumdichte Hochspannungsdurchfuhrung", Nuclear Instruments and Methods, vol. 105, No. 3, Dec. 15, 1972, p. 601.
(S 0349 0094), Schouten, J. A., et al., "Electrical Feedthrough for Gas Pressures up to 10,000 Bar and Low Temperatures", Review of Scientific Instruments, vol. 50, No. 12, Dec. 1979, pp. 1652-1653.

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