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DE975981C - Shaft seal for bearings, especially those of electrical machines - Google Patents

Shaft seal for bearings, especially those of electrical machines

Info

Publication number
DE975981C
DE975981C DES27263A DES0027263A DE975981C DE 975981 C DE975981 C DE 975981C DE S27263 A DES27263 A DE S27263A DE S0027263 A DES0027263 A DE S0027263A DE 975981 C DE975981 C DE 975981C
Authority
DE
Germany
Prior art keywords
bearing
annular spaces
bearings
electrical machines
shaft 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.)
Expired
Application number
DES27263A
Other languages
German (de)
Inventor
Lorenz Soelch
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.)
Siemens Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Priority to DES27263A priority Critical patent/DE975981C/en
Application granted granted Critical
Publication of DE975981C publication Critical patent/DE975981C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/44Free-space packings
    • F16J15/447Labyrinth packings
    • F16J15/4476Labyrinth packings with radial path
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/80Labyrinth sealings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Description

Eine einwandfreie Abdichtung von rotierendenA proper seal from rotating

Teilen, wie z. B. Wellen elektrischer Maschinen, ist mit Schwierigkeiten verbunden, da bei einer solchen Abdichtung Reibungsverluste möglichst vermieden werden müssen.Share, such as B. waves of electrical machines, is associated with difficulties, as in such Sealing friction losses must be avoided as much as possible.

Es ist bekannt, zu beiden Seiten der Lagerstelle mehrstufige Labyrinthdichtungen vorzusehen. Jedoch auch durch Anwendung von Labyrinthdichtungen kann das Austreten von Schmiermittel ausIt is known to provide multi-stage labyrinth seals on both sides of the bearing point. However The use of labyrinth seals can also prevent lubricant from escaping

ίο dem Lager nicht mit Sicherheit verhindert werden, weil zwischen den kammartig ineinandergreifenden Teilen der Labyrinthdichtungen Spalte vorhanden sind, durch die hindurch Schmiermittel unter dem Einfluß eines einseitig auf das Lager wirkenden Druckes oder unter dem Einfluß der auf das Schmiermittel wirkenden Zentrifugalkräfte austreten kann. Durch die Spalte können ferner Verunreinigungen in das Lager gelangen.ίο the camp cannot be prevented with certainty, because gaps exist between the comb-like interlocking parts of the labyrinth seals are through which lubricant under the influence of a one-sided acting on the bearing Exit pressure or under the influence of the centrifugal forces acting on the lubricant can. Furthermore, impurities can get into the bearing through the gaps.

Es ist auch bekannt, Schmierkanäle in Ring-It is also known to have lubrication channels in ring

20- räume der Labyrinthdichtungen zu führen und in die Dichtungsspalte Schmierfett zu drücken, so daß eindringender Staub zurückgedrängt wird. Auch ist es bekannt, diese Fettzufuhr durch einen ständigen Luftüberdruck zu ersetzen, wodurch eine20- spaces of the labyrinth seals to lead and in to press grease into the sealing gaps so that dust is forced back in. Even it is known to replace this supply of fat with a constant excess air pressure, whereby a

Luftströmung aus der Dichtung nach außen entsteht; jedoch können sich dann an beiden Seiten des Lagers verschiedene Drücke einstellen, so daß ein Austreten von Schmiermittel aus dem Lager nicht mit Sicherheit vermieden wird.Air flows out of the seal to the outside; however, it can then be on both sides Set different pressures of the bearing so that lubricant can escape from the bearing is not avoided with certainty.

Nun ist es, um Druckunterschiede innerhalb des Lagers zu vermeiden, weiterhin bekannt, zu beiden Seiten des Lagers Ringräume vorzusehen, die untereinander zum Druckausgleich durch Kanäle verbunden sind. Bei diesen bekannten Anordnungen stehen die Ringräume nicht unter Überdruck. Deshalb ist das Eindringen von Schmutz in die Ringräume und dann auch in das Lager von außen möglich.Now, in order to avoid pressure differences within the bearing, it is still known to both Sides of the bearing to provide annulus spaces that allow pressure equalization through channels are connected. In these known arrangements, the annular spaces are not under overpressure. That's why is the penetration of dirt into the annular spaces and then also into the bearing from outside possible.

Der Erfindung liegt die Aufgabe zugrunde, eine Wellenabdichtung für Lager zu schaffen, welche die Nachteile der bekannten Anordnungen vermeidet und eine sichere Abdichtung sowohl nach innen als auch nach außen schafft, ohne daß die Reibungsverluste nennenswert erhöht werden.The invention is based on the object of creating a shaft seal for bearings which avoids the disadvantages of the known arrangements and a secure seal both internally as well as to the outside world, without the friction losses being significantly increased.

Gemäß der Erfindung sind bei dem Lager mit beiderseits des Lagers angeordneten Labyrinthdichtungen an verschiedenen Gängen jeder Labyrinthdichtung zwei Ringräume vorgesehen, die symmetrisch zur Lagermitte paarweise durch außerhalb des Lagers angeordnete Kanäle miteinander in Verbindung stehen und unter einem Druck gehalten werden, der in den äußeren, dem Lager abgewandten Ringräumen höher als in den inneren, dem Lager zugewandten Ringräumen und höher als der außerhalb des Lagers herrschende Druck ist. Dadurch entstehen zwischen den einzelnen Ringräumen völlig unabhängige, von der Außenluft regelbare Strömungen der zugeführten Luft oder Gase oder Flüssigkeiten. Durch diese Strömungen, die von den Ringräumen höheren Druckes ausgehen 6c und ein Abströmen des Sperrmittels nach außen und zu den Ringräumen geringeren Druckes darstellen, wird eine sichere Abdichtung sowohl gegenüber der Außenluft als auch gegenüber dem Lagerinnern geschaffen. 6«According to the invention, the bearing is provided with labyrinth seals arranged on both sides of the bearing Two annular spaces are provided on different aisles of each labyrinth seal, which pass through in pairs symmetrically to the center of the bearing channels arranged outside the bearing are in communication with one another and under a pressure which is higher in the outer annular spaces facing away from the bearing than in the inner, The annular spaces facing the bearing and higher than the pressure outside the bearing is. This creates completely independent of the outside air between the individual annular spaces controllable flows of the supplied air or gases or liquids. Through these currents the higher pressure emanate from the annular spaces 6c and an outflow of the blocking agent to the outside and to represent the annular spaces of lower pressure, a secure seal is both opposite the outside air as well as against the inside of the warehouse. 6 «

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Die Welle 1 ist mit Hilfe eines Kugellagers 2 in dem Lagergehäuse 3 gelagert. Zu beiden Seiten des Lagers sind durch entsprechend ausgestaltete Ab- 7c Schluß deckel 4 und 5 mehrstufige Labyrinthdichtungen 6 und 7 geschaffen. In diesen Labyrinthdichtungen zu beiden Seiten des Lagers sind Ringräume 8 und 9 sowie 8' und 9' vorgesehen, die durch außerhalb des Lagers angeordnete Kanäle 10 und 10' paarweise miteinander verbunden sind. Durch Anschluß leitungen 11 und 11' können diese Ringräume mit der Außenluft oder mit einer Druckluft- oder Absaugevorrichtung verbunden werden, so daß der Druck in den äußeren, dem La- 8c ger abgewandten Ringräumen höher ist als in den inneren, dem Lager zugewandten Ringräumen. In den äußeren, dem Lager abgewandten Ringräumen herrschender Druck ist dabei so zu wählen, daß er größer ist als der zu beiden Seiten außerhalb der 8; Wellenabdichtung herrschende Druck.The shaft 1 is supported in the bearing housing 3 with the aid of a ball bearing 2. On both sides of the Bearing are 7c end cover 4 and 5 multi-stage labyrinth seals by appropriately designed Ab- 6 and 7 created. There are annular spaces in these labyrinth seals on both sides of the bearing 8 and 9 as well as 8 'and 9' are provided through channels 10 and 10 'are connected to one another in pairs. By connecting lines 11 and 11 'these can Annular spaces connected to the outside air or to a compressed air or suction device be, so that the pressure in the outer, the bearing facing away from the 8c ger annular spaces is higher than in the inner annular spaces facing the bearing. In the outer annular spaces facing away from the bearing The prevailing pressure is to be selected so that it is greater than that on both sides outside of the figure 8; Shaft sealing prevailing pressure.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Wellenabdichtung für Lager, insbesondere solche von elektrischen Maschinen, mit beider- g< seits des Lagers angeordneten Labyrinthdichtungen, dadurch gekennzeichnet, daß an verschiedenen Gängen einer jeden Labyrinthdichtung zwei Ringräume vorgesehen sind, die symmetrisch zur Lagermitte paarweise über außerhalb 9; des Lagers angeordnete Kanäle miteinander in Verbindung stehen und unter einem Druck gehalten werden, der in den äußeren, dem Lager abgewandten Ringräumen höher als in den inneren, dem Lager zugewandten Ringräumen und höher als der außerhalb des Lagers herrschende Druck ist.Shaft seal for bearings, in particular those of electrical machines, with labyrinth seals arranged on both sides of the bearing, characterized in that two annular spaces are provided on different aisles of each labyrinth seal, which are symmetrical to the center of the bearing in pairs over outside 9; The channels arranged in the bearing are in communication with one another and are kept under a pressure which is higher in the outer, annular spaces facing away from the bearing than in the inner, annular spaces facing the bearing and higher than the pressure prevailing outside the bearing.
DES27263A 1952-02-20 1952-02-20 Shaft seal for bearings, especially those of electrical machines Expired DE975981C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES27263A DE975981C (en) 1952-02-20 1952-02-20 Shaft seal for bearings, especially those of electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES27263A DE975981C (en) 1952-02-20 1952-02-20 Shaft seal for bearings, especially those of electrical machines

Publications (1)

Publication Number Publication Date
DE975981C true DE975981C (en) 1963-01-03

Family

ID=7479012

Family Applications (1)

Application Number Title Priority Date Filing Date
DES27263A Expired DE975981C (en) 1952-02-20 1952-02-20 Shaft seal for bearings, especially those of electrical machines

Country Status (1)

Country Link
DE (1) DE975981C (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099727A (en) * 1976-06-05 1978-07-11 Motoren-Und Turbinen-Union Munchen Gmbh Seal system for a gas turbine engine or the like
DE3411312A1 (en) * 1983-03-31 1984-10-11 Masaaki Matsudo Chiba Nagashima Protection device for underwater bearings
EP0151029A3 (en) * 1984-01-31 1986-10-29 Michael J. Ballard Ring seal for contaminant trapping
US4895460A (en) * 1985-10-22 1990-01-23 Warman International Limited Sealing for bearing assemblies
DE4015241A1 (en) * 1990-05-10 1991-11-14 Universal Kugellager Gmbh Grease lubricated bearings for machine tool spindle - has passageways for flow of air to prevent ingress of cooling fluid and second annular gap through bearing
DE10212239A1 (en) * 2002-03-19 2003-10-09 Knf Neuberger Gmbh pump
EP1075894A3 (en) * 1999-08-06 2004-02-18 Hardinge, Inc. Driving connection arrangement and sealing arrangement for a live tool and method for sealing the same
DE10152955B4 (en) * 2000-10-27 2005-07-14 Nsk Ltd. storage unit
FR2913480A1 (en) * 2007-03-07 2008-09-12 Champeaux Charles De TURNING JOINT

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE339381C (en) *
DE86410C (en) *
DE493699C (en) * 1926-07-01 1930-03-12 Siemens Schuckertwerke Akt Ges Process for operating the circulation cooling of electrical machines with helium or a helium mixture as cooling gas
DE647295C (en) * 1933-09-16 1937-07-01 Hahn & Kolb Lubrication of fast running roller bearings
DE676265C (en) * 1933-10-04 1939-05-31 Willi Schulze Lubricating device for the storage of a spindle with a high rotation rate
US2239283A (en) * 1938-11-26 1941-04-22 Westinghouse Electric & Mfg Co Oil-ring-lubricated antifriction bearing
US2273129A (en) * 1939-06-07 1942-02-17 Messinger William Bearing seal
US2445432A (en) * 1945-07-24 1948-07-20 Westinghouse Electric Corp Bearing assembly
US2447671A (en) * 1945-11-13 1948-08-24 Westinghouse Electric Corp High-speed bearing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE339381C (en) *
DE86410C (en) *
DE493699C (en) * 1926-07-01 1930-03-12 Siemens Schuckertwerke Akt Ges Process for operating the circulation cooling of electrical machines with helium or a helium mixture as cooling gas
DE647295C (en) * 1933-09-16 1937-07-01 Hahn & Kolb Lubrication of fast running roller bearings
DE676265C (en) * 1933-10-04 1939-05-31 Willi Schulze Lubricating device for the storage of a spindle with a high rotation rate
US2239283A (en) * 1938-11-26 1941-04-22 Westinghouse Electric & Mfg Co Oil-ring-lubricated antifriction bearing
US2273129A (en) * 1939-06-07 1942-02-17 Messinger William Bearing seal
US2445432A (en) * 1945-07-24 1948-07-20 Westinghouse Electric Corp Bearing assembly
US2447671A (en) * 1945-11-13 1948-08-24 Westinghouse Electric Corp High-speed bearing

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099727A (en) * 1976-06-05 1978-07-11 Motoren-Und Turbinen-Union Munchen Gmbh Seal system for a gas turbine engine or the like
DE3411312A1 (en) * 1983-03-31 1984-10-11 Masaaki Matsudo Chiba Nagashima Protection device for underwater bearings
EP0151029A3 (en) * 1984-01-31 1986-10-29 Michael J. Ballard Ring seal for contaminant trapping
US4895460A (en) * 1985-10-22 1990-01-23 Warman International Limited Sealing for bearing assemblies
DE4015241A1 (en) * 1990-05-10 1991-11-14 Universal Kugellager Gmbh Grease lubricated bearings for machine tool spindle - has passageways for flow of air to prevent ingress of cooling fluid and second annular gap through bearing
EP1075894A3 (en) * 1999-08-06 2004-02-18 Hardinge, Inc. Driving connection arrangement and sealing arrangement for a live tool and method for sealing the same
DE10152955B4 (en) * 2000-10-27 2005-07-14 Nsk Ltd. storage unit
DE10212239A1 (en) * 2002-03-19 2003-10-09 Knf Neuberger Gmbh pump
US7270048B2 (en) 2002-03-19 2007-09-18 Knf Neuberger Gmbh Pump
FR2913480A1 (en) * 2007-03-07 2008-09-12 Champeaux Charles De TURNING JOINT
FR2913479A1 (en) * 2007-03-07 2008-09-12 Champeaux Philippe De Rotating joint for gas turbine rotor of helicopter, has ribs of one of parts overlapped with sleeves of other part to form large volume decompression zone, where plates have gas injection nozzle that is opened in space defined by zones
WO2008132315A3 (en) * 2007-03-07 2008-12-24 Champeaux Charles De Rotary seal
RU2470207C2 (en) * 2007-03-07 2012-12-20 ШАМПО Шарль ДЕ Rotating seal
US8387910B2 (en) 2007-03-07 2013-03-05 Charles De Champeaux Rotary seal

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