FR2343941A1 - Thermally compensated hydrostatic seal - has bush distorted to vary leakage gap angle with fluid temperature - Google Patents

Thermally compensated hydrostatic seal - has bush distorted to vary leakage gap angle with fluid temperature

Info

Publication number
FR2343941A1
FR2343941A1 FR7706597A FR7706597A FR2343941A1 FR 2343941 A1 FR2343941 A1 FR 2343941A1 FR 7706597 A FR7706597 A FR 7706597A FR 7706597 A FR7706597 A FR 7706597A FR 2343941 A1 FR2343941 A1 FR 2343941A1
Authority
FR
France
Prior art keywords
bush
ring
distorted
vary
hydrostatic seal
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
FR7706597A
Other languages
French (fr)
Other versions
FR2343941B1 (en
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2343941A1 publication Critical patent/FR2343941A1/en
Application granted granted Critical
Publication of FR2343941B1 publication Critical patent/FR2343941B1/fr
Granted 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
    • F16J15/34—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
    • F16J15/3432—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 the geometry of the surface being able to vary during operation

Abstract

The thermally-compensated hydrostatic seal is for use in pumpbs between the rotary driving shaft and the housing, using regulated leakage of the fluid pumped to lubricate the sealing faces. A ring on the shaft has a sealing face working against a mating one on a bush sliding in the housing, a path allowing limited leakage being formed between them. The bush (56) has a compensating ring (54) heat-shrunk onto one end, and of material having a different coefficient of thermal expansion to that of the bush. As pump temperature rises, the bush is caused to distort by the ring, increasing the angle of opening of the gap (50) between it and the shaft ring (24) at low fluid temperatures, and decreasing it at high temperatures.
FR7706597A 1976-03-08 1977-03-07 Thermally compensated hydrostatic seal - has bush distorted to vary leakage gap angle with fluid temperature Granted FR2343941A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66513676A 1976-03-08 1976-03-08

Publications (2)

Publication Number Publication Date
FR2343941A1 true FR2343941A1 (en) 1977-10-07
FR2343941B1 FR2343941B1 (en) 1982-10-15

Family

ID=24668870

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7706597A Granted FR2343941A1 (en) 1976-03-08 1977-03-07 Thermally compensated hydrostatic seal - has bush distorted to vary leakage gap angle with fluid temperature

Country Status (2)

Country Link
JP (1) JPS52109068A (en)
FR (1) FR2343941A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949868A1 (en) * 1979-12-12 1981-07-02 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Sliding ring seal for pressurised water reactor coolant pump - has rings tilting to close gap as temperature rises
DE3531652A1 (en) * 1985-09-05 1987-03-12 Klein Schanzlin & Becker Ag Mechanical seal
EP0735300A1 (en) * 1995-04-01 1996-10-02 FEODOR BURGMANN DICHTUNGSWERKE GmbH & Co. Mechanical face seal
US8663369B2 (en) 2010-06-01 2014-03-04 Shell Oil Company Separation of gases produced by combustion
US8858679B2 (en) 2010-06-01 2014-10-14 Shell Oil Company Separation of industrial gases
US8858680B2 (en) 2010-06-01 2014-10-14 Shell Oil Company Separation of oxygen containing gases

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141794A (en) * 2014-07-07 2014-11-12 天津市富鑫达密封有限公司 Quick packaging pharmaceutical-grade rotary sealing device for sterile pipe
CN112360801A (en) * 2020-10-14 2021-02-12 陈钲仁 High leakproofness centrifugal pump based on double containment formula is packed

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907723A1 (en) * 1969-02-15 1970-09-03 Klein Schanzlin & Becker Ag Hydrostatic mechanical seal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907723A1 (en) * 1969-02-15 1970-09-03 Klein Schanzlin & Becker Ag Hydrostatic mechanical seal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/69 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949868A1 (en) * 1979-12-12 1981-07-02 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Sliding ring seal for pressurised water reactor coolant pump - has rings tilting to close gap as temperature rises
DE3531652A1 (en) * 1985-09-05 1987-03-12 Klein Schanzlin & Becker Ag Mechanical seal
EP0735300A1 (en) * 1995-04-01 1996-10-02 FEODOR BURGMANN DICHTUNGSWERKE GmbH & Co. Mechanical face seal
US8663369B2 (en) 2010-06-01 2014-03-04 Shell Oil Company Separation of gases produced by combustion
US8858679B2 (en) 2010-06-01 2014-10-14 Shell Oil Company Separation of industrial gases
US8858680B2 (en) 2010-06-01 2014-10-14 Shell Oil Company Separation of oxygen containing gases

Also Published As

Publication number Publication date
JPS5547263B2 (en) 1980-11-28
FR2343941B1 (en) 1982-10-15
JPS52109068A (en) 1977-09-12

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Legal Events

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ST Notification of lapse