FR2385013A1 - Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves - Google Patents

Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves

Info

Publication number
FR2385013A1
FR2385013A1 FR7708959A FR7708959A FR2385013A1 FR 2385013 A1 FR2385013 A1 FR 2385013A1 FR 7708959 A FR7708959 A FR 7708959A FR 7708959 A FR7708959 A FR 7708959A FR 2385013 A1 FR2385013 A1 FR 2385013A1
Authority
FR
France
Prior art keywords
fixed ring
gas pressure
bellow
grooves
rotating shaft
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.)
Pending
Application number
FR7708959A
Other languages
French (fr)
Inventor
Joachim Kotzur
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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade AG
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 Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Priority to FR7708959A priority Critical patent/FR2385013A1/en
Publication of FR2385013A1 publication Critical patent/FR2385013A1/en
Pending 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • F16J15/342—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with means for feeding fluid directly to the face

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

The revolving sealing ring (1) is connected to the shaft, and the fixed seal ring (2) is connected to the seal housing (4) by means of the bellows (3). The bellows apply a pressure on the fixed ring. Sealing gas is introduced at low rotational speed and at standstill. The gas is admitted by the pipe (5) which extends to the circular groove (6). The pipe end is fitted with a throttle (7) at the top of the circular groove. The gas pressure maintains the gap (8) and the fixed ring has external grooves (9) in the form of a spiral, which allows the gas to the volume (10). At high rotational speed the generated gas pressure keeps the faces apart.
FR7708959A 1977-03-25 1977-03-25 Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves Pending FR2385013A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7708959A FR2385013A1 (en) 1977-03-25 1977-03-25 Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7708959A FR2385013A1 (en) 1977-03-25 1977-03-25 Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves

Publications (1)

Publication Number Publication Date
FR2385013A1 true FR2385013A1 (en) 1978-10-20

Family

ID=9188573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708959A Pending FR2385013A1 (en) 1977-03-25 1977-03-25 Mechanical seal for rotating shaft - has bellow to apply gas pressure to fixed ring with outer and inner spiral grooves between which circular grooves

Country Status (1)

Country Link
FR (1) FR2385013A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062098A2 (en) * 1981-04-07 1982-10-13 Sulzer - Escher Wyss AG Hydraulic turbine
US4376540A (en) * 1980-12-03 1983-03-15 M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Gas seal for shafts with a compensating ring
EP0097802A1 (en) * 1982-06-25 1984-01-11 Man Gutehoffnungshütte Gmbh Shaft sealing with a barrier fluid comprising feeding conduits and discharge conduits
US4529209A (en) * 1982-07-07 1985-07-16 Hitachi, Ltd. Hydraulic machine shaft seal with centrifugal removal of sand and soil particles
EP0317533A1 (en) * 1987-11-17 1989-05-24 SKF Nova AB Shaft seal
EP0745793A1 (en) * 1995-05-04 1996-12-04 EG&G SEALOL, INC. Face seal device having high angular compliance
WO2002004844A3 (en) * 2000-07-12 2002-07-11 Perkinelmer Fluid Sciences Rotary face seal assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444544A1 (en) * 1974-09-18 1976-04-01 Gutehoffnungshuette Sterkrade Contact free gas seal rings with gas barrier - have curved radial grooves to produce aerostatic axial force

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444544A1 (en) * 1974-09-18 1976-04-01 Gutehoffnungshuette Sterkrade Contact free gas seal rings with gas barrier - have curved radial grooves to produce aerostatic axial force

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376540A (en) * 1980-12-03 1983-03-15 M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Gas seal for shafts with a compensating ring
EP0062098A2 (en) * 1981-04-07 1982-10-13 Sulzer - Escher Wyss AG Hydraulic turbine
EP0062098A3 (en) * 1981-04-07 1984-01-04 Sulzer - Escher Wyss Ag Hydraulic turbine
EP0097802A1 (en) * 1982-06-25 1984-01-11 Man Gutehoffnungshütte Gmbh Shaft sealing with a barrier fluid comprising feeding conduits and discharge conduits
US4529209A (en) * 1982-07-07 1985-07-16 Hitachi, Ltd. Hydraulic machine shaft seal with centrifugal removal of sand and soil particles
EP0317533A1 (en) * 1987-11-17 1989-05-24 SKF Nova AB Shaft seal
EP0745793A1 (en) * 1995-05-04 1996-12-04 EG&G SEALOL, INC. Face seal device having high angular compliance
US5769604A (en) * 1995-05-04 1998-06-23 Eg&G Sealol, Inc. Face seal device having high angular compliance
WO2002004844A3 (en) * 2000-07-12 2002-07-11 Perkinelmer Fluid Sciences Rotary face seal assembly
US7044470B2 (en) 2000-07-12 2006-05-16 Perkinelmer, Inc. Rotary face seal assembly

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