FR2363745A1 - Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers - Google Patents

Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers

Info

Publication number
FR2363745A1
FR2363745A1 FR7626834A FR7626834A FR2363745A1 FR 2363745 A1 FR2363745 A1 FR 2363745A1 FR 7626834 A FR7626834 A FR 7626834A FR 7626834 A FR7626834 A FR 7626834A FR 2363745 A1 FR2363745 A1 FR 2363745A1
Authority
FR
France
Prior art keywords
fluid
jet
shaft seal
delivered via
fluid delivered
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.)
Granted
Application number
FR7626834A
Other languages
French (fr)
Other versions
FR2363745B1 (en
Inventor
Pierre Poupel
Patrick Le Rolland
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.)
SOTRAPLEX
Original Assignee
SOTRAPLEX
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
Application filed by SOTRAPLEX filed Critical SOTRAPLEX
Priority to FR7626834A priority Critical patent/FR2363745A1/en
Publication of FR2363745A1 publication Critical patent/FR2363745A1/en
Application granted granted Critical
Publication of FR2363745B1 publication Critical patent/FR2363745B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B63B59/10—Cleaning devices for hulls using trolleys or the like driven along the surface
    • 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sealing Of Bearings (AREA)

Abstract

The rotating shaft (36) passes through the chamber (35) which is immersed in water (32) and contains air under pressure. To prevent the leakage of air a screen of fluid is produced around each outlet (14). High pressure fluid is supplied by the pipes (31A, 31B) to the tor. (19e. The fluid flows out through holes (24) into annular chambers (23) and then through a narrow annular gap (21) between the tubular ring (18) and the edge of the hole (14). The fluid issues from the gap (21) in the form of a circular screen which prevents the outward flow of air from the chamber (35). At the same time the shaft (36) can move laterally or axially or it can rotate without being restricted by friction.
FR7626834A 1976-09-07 1976-09-07 Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers Granted FR2363745A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7626834A FR2363745A1 (en) 1976-09-07 1976-09-07 Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7626834A FR2363745A1 (en) 1976-09-07 1976-09-07 Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers

Publications (2)

Publication Number Publication Date
FR2363745A1 true FR2363745A1 (en) 1978-03-31
FR2363745B1 FR2363745B1 (en) 1980-06-06

Family

ID=9177422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7626834A Granted FR2363745A1 (en) 1976-09-07 1976-09-07 Shaft seal for underwater machinery - uses annular screen formed by jet of fluid delivered via toroidal chambers

Country Status (1)

Country Link
FR (1) FR2363745A1 (en)

Also Published As

Publication number Publication date
FR2363745B1 (en) 1980-06-06

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Legal Events

Date Code Title Description
ST Notification of lapse