CN102889387A - Graphite oil seal device - Google Patents

Graphite oil seal device Download PDF

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Publication number
CN102889387A
CN102889387A CN201210410258XA CN201210410258A CN102889387A CN 102889387 A CN102889387 A CN 102889387A CN 201210410258X A CN201210410258X A CN 201210410258XA CN 201210410258 A CN201210410258 A CN 201210410258A CN 102889387 A CN102889387 A CN 102889387A
Authority
CN
China
Prior art keywords
ring
graphite
pressure lid
static pressure
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.)
Pending
Application number
CN201210410258XA
Other languages
Chinese (zh)
Inventor
孙先超
陶江
王学斌
贺健
罗玉权
崔景�
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.)
AVIC Harbin Dongan Engine Group Co Ltd
Original Assignee
AVIC Harbin Dongan Engine Group Co Ltd
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 AVIC Harbin Dongan Engine Group Co Ltd filed Critical AVIC Harbin Dongan Engine Group Co Ltd
Priority to CN201210410258XA priority Critical patent/CN102889387A/en
Publication of CN102889387A publication Critical patent/CN102889387A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a graphite oil seal device, which comprises a graphite obturage ring, a movable gland, a fixed gland and a pressing ring, wherein the fixed gland and the pressing ring are attached to an inner ring of a bearing; the inner diameters of the fixed gland and the pressing ring are matched with the outer diameter of a rotor; a step and the graphite obturage ring are arranged on the outer diameter of the pressing ring; one end face of the graphite obturage ring is attached to the movable gland, and a gap is retained between the other end face of the graphite obturage ring and the pressing ring; an annular groove is formed on the outer diameter of the graphite obturage ring; an annular groove is formed in the outer diameter of the fixed gland; and obturage rubber rings are arranged in the annular grooves. The graphite oil seal device provided in the invention has a low requirement on the working conditions, works reliably, is small in size, light in weight and simple in structure, has a self-lubricating function and is anti-abrasion; and during assembling and working, a phenomenon of locking is avoided.

Description

The graphite oil seal apparatus
Technical field
The present invention relates to a kind of oil-sealing arrangement, especially a kind of graphite oil seal apparatus.
Background technique
Oil seal technique commonly used mainly contains following several seal type at present: end face seal, circumferential sealing, trip ring sealing, floating-ring seal, the tooth-like sealing of comb, liquid packing.Certain type aerial engine fan and gas compressor have 3 place's bearings, and oil nozzle sprays to bearing with lubricant oil, are bearing lubrication, bearing throws away the part lubricating oil in rotation process, in order to prevent that lubricating oil from flowing out outside the oil return apparatus, in various oil seal techniques, optimal mode is the trip ring sealing configuration.Trip ring sealing configuration type comprises: back-to-back carbon graphite trip ring, the single carbon graphite trip ring of non-pressure balance, metallic elastic trip ring, have simple in structure, size is little, lightweight, reveal lowly, but it can only be used for axial seal.And single axial seal can not realize the anti-leak function, also needs a kind of radial seal structure, but can make the hermetic unit complex structure, and it is large that volume becomes.Size is less, rotating speed is high, compact structure and this h type engine h has, said structure can not satisfy the normal usage requirement of motor, therefore need be a kind of simple in structure, volume is little, can realize axle, radially simultaneously sealing and the effective oil-sealing arrangement of oil sealing.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, volume is little, can realize axle, a kind of graphite oil seal apparatus of sealing simultaneously between the footpath.
Concrete technological scheme of the present invention is: the graphite oil seal apparatus comprises the graphite seal ring, the dynamic pressure lid, the static pressure lid, trim ring, described static pressure lid is fitted by the interior ring of locking nut and trim ring and bearing, the internal diameter of static pressure lid and trim ring cooperates with the external diameter of rotor, described trim ring external diameter is provided with step and the graphite seal ring is installed near dynamic pressure lid place, end face of described graphite seal ring and dynamic pressure lid are fitted, leave the gap between other end and internal diameter and the trim ring, the external diameter of graphite seal ring is by cooperating with the static pressure lid after the tensioner, described static pressure lid cooperates with outer race, also be provided with a ring annular groove on the external diameter of described graphite seal ring, be provided with a ring annular groove on the external diameter of static pressure lid, be provided with the cushion rubber of obturaging in this annular groove.
A kind of graphite oil seal apparatus provided by the invention has comprised clearance type circumferential sealing and end face seal.The graphite seal ring is stator spare, and the graphite seal ring structure is simple, cooperates by tensioner with the static pressure lid, can realize axial sealing; The axial end of dynamic pressure lid is fitted on axial end and the rotor, prevents oil and gas leakage, has gone out in fact sealing radially; Fluted on the external diameter circumferential end surfaces, can effectively reduce mist of oil pressure, stop mist of oil directly to leak into the oil return apparatus outside by radial clearance, reduce leak-down rate, static pressure covers and is provided with the cushion rubber of obturaging, and has realized the sealing between static pressure lid and housing; The internal diameter of graphite seal ring and end face all and certain gap is arranged between the epitrochanterian trim ring, effectively avoid and rotor between contact wear, the dynamic pressure lid rotates with rotor, because the lubrication of graphite is good, weares and teares little good sealing effect.
End face graphite oil encapsulation technique of the present invention is less demanding to operating conditions, reliable operation, and volume is little, lightweight, simple in structure simultaneously, and self-lubricating function is arranged, and is wear-resisting, can not produce locking phenomenon in assembling and the work.Rely on the radial hole on the rotor disk that pressurized gas are caused the seal interface, by pressure reduction the mist of oil that bearing throws away is sealed, thereby rely on simultaneously pressure reduction with axial end and the dynamic pressure lid end face applying realization end face seal of graphite annulus.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in the figure, the graphite oil seal apparatus comprises graphite seal ring 1, dynamic pressure lid 2, static pressure lid 3, trim ring 4, described static pressure lid 3 is fitted with the interior ring of bearing 6 by locking nut 5 and trim ring 4, the internal diameter of static pressure lid 3 and trim ring 4 cooperates with the external diameter of rotor 7, described trim ring 4 external diameters cover 2 places near dynamic pressure and are provided with step and graphite seal ring 1 is installed, end face of described graphite seal ring 1 and dynamic pressure lid 2 are fitted, leave the gap between other end and internal diameter and the trim ring 4, the external diameter of graphite seal ring 1 is by cooperating with static pressure lid 3 after the tensioner, described static pressure lid 3 cooperates with bearing 6 outer shrouds, also be provided with a ring annular groove on the external diameter of described graphite seal ring 1, be provided with a ring annular groove on the external diameter of static pressure lid 3, be provided with the cushion rubber 8 of obturaging in this annular groove.

Claims (1)

1. graphite oil seal apparatus, it is characterized in that, the graphite oil seal apparatus comprises graphite seal ring (1), dynamic pressure lid (2), static pressure lid (3), trim ring (4), described static pressure lid (3) is fitted with the interior ring of bearing (6) by locking nut (5) and trim ring (4), the internal diameter of static pressure lid (3) and trim ring (4) cooperates with the external diameter of rotor (7), described trim ring (4) external diameter is located to be provided with step and graphite seal ring (1) is installed near dynamic pressure lid (2), end face of described graphite seal ring (1) and dynamic pressure lid (2) are fitted, other end and internal diameter and trim ring leave the gap between (4), the external diameter of graphite seal ring (1) is by cooperating with static pressure lid (3) after the tensioner, described static pressure lid (3) cooperates with bearing (6) outer shroud, also be provided with a ring annular groove on the external diameter of described graphite seal ring (1), be provided with a ring annular groove on the external diameter of static pressure lid (3), be provided with the cushion rubber of obturaging (8) in this annular groove.
CN201210410258XA 2012-10-24 2012-10-24 Graphite oil seal device Pending CN102889387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210410258XA CN102889387A (en) 2012-10-24 2012-10-24 Graphite oil seal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210410258XA CN102889387A (en) 2012-10-24 2012-10-24 Graphite oil seal device

Publications (1)

Publication Number Publication Date
CN102889387A true CN102889387A (en) 2013-01-23

Family

ID=47532999

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210410258XA Pending CN102889387A (en) 2012-10-24 2012-10-24 Graphite oil seal device

Country Status (1)

Country Link
CN (1) CN102889387A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972216A (en) * 2016-07-22 2016-09-28 中国航空动力机械研究所 Circumferential graphite sealing device
CN106285957A (en) * 2016-09-13 2017-01-04 中国科学院工程热物理研究所 Pre-seal structure
CN110529503A (en) * 2019-08-02 2019-12-03 中国航发贵阳发动机设计研究所 A kind of sealing structure for Main Shaft Bearing of Engine lubricating oil
CN112483650A (en) * 2020-10-27 2021-03-12 中国船舶重工集团公司第七0三研究所 Radial support and oil cavity seal of gas compressor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5503407A (en) * 1994-04-18 1996-04-02 Stein Seal Company Windbacks for rotating shafts
JP2001123988A (en) * 1999-10-21 2001-05-08 Hitachi Ltd Shaft seal device of turbo refregirating machine
CN201953484U (en) * 2010-12-23 2011-08-31 中国航空工业集团公司沈阳发动机设计研究所 Device for avoiding lubricating oil leaking through adopting labyrinth sealing structure
CN102322530A (en) * 2011-09-01 2012-01-18 中国航空动力机械研究所 Shaft sealing structure of carbon graphite ring
CN202851963U (en) * 2012-10-24 2013-04-03 哈尔滨东安发动机(集团)有限公司 Graphite oil sealing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5503407A (en) * 1994-04-18 1996-04-02 Stein Seal Company Windbacks for rotating shafts
JP2001123988A (en) * 1999-10-21 2001-05-08 Hitachi Ltd Shaft seal device of turbo refregirating machine
CN201953484U (en) * 2010-12-23 2011-08-31 中国航空工业集团公司沈阳发动机设计研究所 Device for avoiding lubricating oil leaking through adopting labyrinth sealing structure
CN102322530A (en) * 2011-09-01 2012-01-18 中国航空动力机械研究所 Shaft sealing structure of carbon graphite ring
CN202851963U (en) * 2012-10-24 2013-04-03 哈尔滨东安发动机(集团)有限公司 Graphite oil sealing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972216A (en) * 2016-07-22 2016-09-28 中国航空动力机械研究所 Circumferential graphite sealing device
CN106285957A (en) * 2016-09-13 2017-01-04 中国科学院工程热物理研究所 Pre-seal structure
CN110529503A (en) * 2019-08-02 2019-12-03 中国航发贵阳发动机设计研究所 A kind of sealing structure for Main Shaft Bearing of Engine lubricating oil
CN112483650A (en) * 2020-10-27 2021-03-12 中国船舶重工集团公司第七0三研究所 Radial support and oil cavity seal of gas compressor

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Application publication date: 20130123