CN201196266Y - Perforated labyrinth type oil seal structure for high speed shaft - Google Patents

Perforated labyrinth type oil seal structure for high speed shaft Download PDF

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Publication number
CN201196266Y
CN201196266Y CNU2008200339966U CN200820033996U CN201196266Y CN 201196266 Y CN201196266 Y CN 201196266Y CN U2008200339966 U CNU2008200339966 U CN U2008200339966U CN 200820033996 U CN200820033996 U CN 200820033996U CN 201196266 Y CN201196266 Y CN 201196266Y
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CN
China
Prior art keywords
oil
space
seal structure
labyrinth
type oil
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 - Lifetime
Application number
CNU2008200339966U
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Chinese (zh)
Inventor
金炳庆
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.)
JIANGSU GL-TURBO CORPORATION
Original Assignee
WUXI JINLU GENERAL MACHINERY 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 WUXI JINLU GENERAL MACHINERY CO Ltd filed Critical WUXI JINLU GENERAL MACHINERY CO Ltd
Priority to CNU2008200339966U priority Critical patent/CN201196266Y/en
Application granted granted Critical
Publication of CN201196266Y publication Critical patent/CN201196266Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an oil sealing structure of the output end of a main shaft in a high-speed blower speed increase gearbox, in particular to an oil sealing structure used for preventing the external leakage of lubricating oil of the output end of the main shaft, which belongs to the technical field of mechanical structure. A plurality of grooves are arranged on a labyrinth-type oil sealing piece, so as to form a labyrinth-type sealing structure with an output shaft. The structure comprises an interstage space and an intertooth space, and is characterized in that the upper and lower parts of the interstage space and the intertooth space are respectively provided with pressure balance holes (communicated with the atmosphere) and oil return holes (returning oil to an oil tank). Under the circumstance of large oil supply amount, enough tooth shape space and the pressure balance holes on the upper part can weaken the adsorption and blockade phenomena caused by the viscosity of the lubricating oil and allows the lubricating oil to return rapidly r to the oil tank in time through the oil return holes on the lower part, thereby effectively preventing the external leakage of the lubricating oil.

Description

Labyrinth type oil seal structure with holes for high speed axis
Technical field
The utility model relates to the oil seal structure of main shaft output terminal in a kind of high-speed fan step-up gear, specifically is used to prevent the external leakage of main shaft output terminal lubricant oil, belongs to the mechanical structure technical field.
Background technique
In prior art, high speed output shaft in the high-speed fan step-up gear generally adopts tilting-pad bearing pressure oil lubricating system, axle head adopts sawtooth pattern labyrinth type oil seal structure usually, under the bigger situation of fuel delivery, this structure obviously descends to the sealing effect of lubricant oil, in actual use, the lubricant oil phenomenon that leaks outside happens occasionally, and causes environmental pollution.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of labyrinth type oil seal structure with holes for high speed axis is provided, and it can guarantee the sealing effect under the big situation of fuel delivery, eliminates the external leakage phenomenon.
Main solution of the present utility model is achieved in that
The utility model mainly adopts and have a plurality of grooves on the labyrinth type oil sealing, constitute labyrinth seal structure with output shaft, labyrinth seal structure comprises interstage space and interdental spaces, and feature is to offer pressure compensation opening respectively in interstage space and interdental spaces top; Offer spill port respectively in interstage space and interdental spaces bottom.
Compared with the prior art the utility model has the following advantages:
The utility model is because in the space that increases on the existing labyrinth seal structure between profile of tooth, and offers spill port (returning fuel tank) in the labyrinth seal structure bottom, offers pressure compensation opening (connection atmosphere) on labyrinth seal structure top.Under the bigger situation of fuel delivery, the enough profile of tooth spaces and the pressure compensation opening on top can weaken " absorption retardance " phenomenon that lubricant oil viscosity causes, help lubricant oil can be quickly spill port by the bottom return into fuel tank, effectively stop the external leakage of lubricant oil.
Description of drawings
Fig. 1 is the utility model structure user mode figure.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: it mainly comprises output shaft 1, labyrinth type oil sealing 2, tilting-pad bearing 3, gear housing 4.Output shaft 1 is installed in the gear housing 4, output shaft 1 drives in gear pair and make high speed rotating down under the support of tilting-pad bearing 3, pressure lubrication oil between axle and bearing is entered by filler opening 5 by oil supply system, when oil mass is big lubricant oil under pressure easily from output shaft to external leakage.The effect of labyrinth type oil sealing 2 is exactly to prevent this external leakage.Labyrinth type oil sealing 2 is provided with some grooves, constitutes labyrinth seal structure with output shaft 1.Labyrinth seal structure mainly is made up of interstage space 6 and interdental spaces 7, offers pressure balance through hole and spill port respectively at the position up and down of interstage space 6 and interdental spaces 7.Wherein upper pressure balance through hole is connected by through hole on the gear housing 8 and atmosphere; The bottom oil return through-hole is connected by through hole on the gear housing 9 and fuel tank.When oil process interstage space 6 and interdental spaces 7, all can return into fuel tank by lower through-hole.Top balance through hole can weaken " absorption retardance " phenomenon that oily viscosity causes, helps lubricant oil and returns timely into fuel tank fast, reaches the purpose that prevents the lubricant oil external leakage.

Claims (1)

1. labyrinth type oil seal structure with holes for high speed axis, employing has a plurality of grooves on labyrinth type oil sealing (2), constitute labyrinth seal structure with output shaft (1), labyrinth seal structure comprises interstage space (6) and interdental spaces (7), it is characterized in that offering pressure compensation opening respectively in interstage space (6) and interdental spaces (7) top; Offer spill port respectively in interstage space (6) and interdental spaces (7) bottom.
CNU2008200339966U 2008-04-01 2008-04-01 Perforated labyrinth type oil seal structure for high speed shaft Expired - Lifetime CN201196266Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200339966U CN201196266Y (en) 2008-04-01 2008-04-01 Perforated labyrinth type oil seal structure for high speed shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200339966U CN201196266Y (en) 2008-04-01 2008-04-01 Perforated labyrinth type oil seal structure for high speed shaft

Publications (1)

Publication Number Publication Date
CN201196266Y true CN201196266Y (en) 2009-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200339966U Expired - Lifetime CN201196266Y (en) 2008-04-01 2008-04-01 Perforated labyrinth type oil seal structure for high speed shaft

Country Status (1)

Country Link
CN (1) CN201196266Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438196A (en) * 2013-09-11 2013-12-11 株洲高精传动技术有限公司 Non-contact seal assembly for gear box
CN103671852B (en) * 2012-09-13 2016-07-06 南车戚墅堰机车车辆工艺研究所有限公司 High gear box seal device and apply the high-speed gear box of this device
CN108506465A (en) * 2018-03-27 2018-09-07 南京高速齿轮制造有限公司 Active boost formula seals gear-box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671852B (en) * 2012-09-13 2016-07-06 南车戚墅堰机车车辆工艺研究所有限公司 High gear box seal device and apply the high-speed gear box of this device
CN103438196A (en) * 2013-09-11 2013-12-11 株洲高精传动技术有限公司 Non-contact seal assembly for gear box
CN103438196B (en) * 2013-09-11 2016-03-02 湖南南方宇航高精传动有限公司 Gear-box noncontact seal assembly
CN108506465A (en) * 2018-03-27 2018-09-07 南京高速齿轮制造有限公司 Active boost formula seals gear-box

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Wuxi Jieer Compressor Co., Ltd.

Assignor: Wuxi Jinlu General Machinery Co., Ltd.

Contract record no.: 2010320000429

Denomination of utility model: Labyrinth type oil seal structure with holes for high speed axis

Granted publication date: 20090218

License type: Exclusive License

Record date: 20100421

ASS Succession or assignment of patent right

Owner name: WUXI JIEER COMPRESSOR CO., LTD.

Free format text: FORMER OWNER: WUXI JINLU GENERAL MACHINERY CO., LTD.

Effective date: 20150727

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150727

Address after: 214106, No. 38, Qian Lian Road, anzhen Town, Xishan Development Zone, Xishan District, Jiangsu, Wuxi

Patentee after: Wuxi Jieer Compressor Co., Ltd.

Address before: Lake town of Xishan District 214117 Jiangsu city of Wuxi province (Gan Lu) Gan Road No. 44

Patentee before: Wuxi Jinlu General Machinery Co., Ltd.

C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 214106 No. 38, Qian Lian Road, Xishan Economic Development Zone, Xishan District, Jiangsu, Wuxi

Patentee after: JIANGSU GL-TURBO CORPORATION

Address before: 214106, No. 38, Qian Lian Road, anzhen Town, Xishan Development Zone, Xishan District, Jiangsu, Wuxi

Patentee before: Wuxi Jieer Compressor Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20090218