GB1025498A - Seal apparatus - Google Patents

Seal apparatus

Info

Publication number
GB1025498A
GB1025498A GB33500/64A GB3350064A GB1025498A GB 1025498 A GB1025498 A GB 1025498A GB 33500/64 A GB33500/64 A GB 33500/64A GB 3350064 A GB3350064 A GB 3350064A GB 1025498 A GB1025498 A GB 1025498A
Authority
GB
United Kingdom
Prior art keywords
ring
seal
elements
sealing gas
seal elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33500/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US304031A external-priority patent/US3392910A/en
Application filed by Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of GB1025498A publication Critical patent/GB1025498A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/441—Free-space packings with floating ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mechanical Sealing (AREA)

Abstract

1,025,498. Seals. DRESSER INDUSTRIES Inc. Aug. 17, 1964 [Aug. 23, 1963], No. 33500/64. Heading F2B. A seal for a centrifugal compressor circulating helium in a nuclear plant comprises a ring 29 surrounding the impeller shaft 14, a set of annular labyrinth seal elements 46, 49 extending radially inwardly towards the impeller shaft, abutment elements 44 at opposite ends of the set of seal elements 46, 49 to provide land surfaces which are normally spaced from the shaft and seal means operatively interposed between the ring 29 and casing 19. The abutment elements 44 may extend as far as, or further than, the seal elements towards a sleeve 30 which is rotatable with the impeller shaft. The ring 29 is frictionally held in position by a portion of the ring having a radial surface 62 which is pressed by a spring 68 against a radial surface 63 of a ring 58 secured to the casing 19, piston-type split-rings 54, 55 allowing radial movement of the ring in operation; the spring 68 is of waveform and is retained in a recess by a ring 64. Helium sealing gas at a greater pressure than the gas being compressed is supplied to the seal (designated 28 in Fig. 1, not shown) through a pipe (73) and duct 71 to a space 72 between the split-rings 54, 55 from where it flows inwardly through bores 76 and in both axial directions between the seal elements 46, 49 and the sleeve 30; a portion of the sealing gas will leak past the split-rings and a further portion past abutments 32, 33 of the sleeve. The sealing gas which flows past the seal elements 46 enters the impeller chamber 15 and the sealing gas which flows past the seal elements 49 enters drain passages 78, 79 and return pipe (80). When the compressor is shut down, a seal is provided between a flange 81 on the impeller shaft and an element 83 on a bellows assembly 84. The sealing gas serves also to cool the ring 29. The invention may also be applied to apparatus for circulating liquid and, if desired, the sealing fluid may be liquid instead of gas.
GB33500/64A 1963-08-23 1964-08-17 Seal apparatus Expired GB1025498A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US304031A US3392910A (en) 1963-08-23 1963-08-23 Seal
FR985456A FR1409528A (en) 1963-08-23 1964-08-18 Sealing device

Publications (1)

Publication Number Publication Date
GB1025498A true GB1025498A (en) 1966-04-14

Family

ID=29404156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33500/64A Expired GB1025498A (en) 1963-08-23 1964-08-17 Seal apparatus

Country Status (2)

Country Link
FR (1) FR1409528A (en)
GB (1) GB1025498A (en)

Also Published As

Publication number Publication date
FR1409528A (en) 1965-08-27

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