CN109139913A - A kind of radial direction double end-face mechanical sealing device - Google Patents
A kind of radial direction double end-face mechanical sealing device Download PDFInfo
- Publication number
- CN109139913A CN109139913A CN201811246389.2A CN201811246389A CN109139913A CN 109139913 A CN109139913 A CN 109139913A CN 201811246389 A CN201811246389 A CN 201811246389A CN 109139913 A CN109139913 A CN 109139913A
- Authority
- CN
- China
- Prior art keywords
- ring
- stationary ring
- interior
- outer stationary
- radial direction
- 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
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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
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
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- 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
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- 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
- F16J15/3436—Pressing means
- F16J15/344—Pressing means the pressing force being applied by means of an elastic ring supporting the slip-ring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention relates to a kind of radial direction double end-face mechanical sealing devices, and using the seal form of radial direction double end-face, axial dimension is shorter, and the distance for avoiding turbine disk cantilever segment is too long, improve the rigidity of high-speed turbine machine rotor system, compact-sized；It by circumferentially uniformly distributed hole pin, introduces cooling medium and mechanical seal is lubricated and is cooled down, substantially increase working time of the mechanical seal under ultrahigh speed, extend service life, and cooling is more evenly, cooling effect is more preferably；The cooling duct of introducing, the working conditions such as pressure difference, friction that can make two layers of mechanical seal by adjusting type, the pressure and other parameters of cooling medium reach most preferably, reduce mechanical seal end surface abrasion, extend service life；The split type structure of rotating ring is more advantageous to maintenance, detection, and rotating ring can produce certain compensation under stress condition, and absorption vibration ability is more preferable, better tightness.
Description
Technical field
The invention belongs to field of mechanical technique, and in particular to a kind of radial direction double end-face mechanical sealing device is suitable for high speed
It is sealed when long between turbine high temperature high-pressure working medium and cabin lubricant medium.
Background technique
The working speed of turbine disk is very high at present, and by taking torpedo turbine machine as an example, turbine disk rotating speed is super when work
50000r/min is crossed, in underwater civilian UUV, using steam turbine as the engine of type, turbine disk revolving speed reaches
100000r/min, mechanical seal end surface frictional heat is big under high revolving speed, and abrasion is violent.The single mechanical end face seal used before
Device, because structure limitation cannot be cooled down using the mechanical seal for forcing cooling to work ultrahigh speed, thus working life is very
It is low；And when using axial double mechanical seal device, turbine disc rotor system axial length is big, and turbine disk cantilever segment distance is big,
Rotor system poor rigidity, and by centrifugal forces affect under ultrahigh speed, cooling effect is bad, thus working life is not also high.
Summary of the invention
Technical problems to be solved
In order to improve the working life that turbine mechanical seals under ultrahigh speed, mechanical seal end surface abrasion is reduced, is improved close
Sealing property proposes a kind of radial direction double end-face mechanical sealing device.
Technical solution
A kind of radial direction double end-face mechanical sealing device, it is characterised in that including hole pin, outer stationary ring spring, interior stationary ring O
Type circle, interior stationary ring, outer stationary ring O-ring, outer stationary ring, angle seal O-ring, rotating ring, rotating ring O-ring and interior stationary ring spring；Rotating ring is logical
It crosses axle sleeve and is pressed on turbine side surface, realize turbine gas by angle seal O-ring and rotating ring O-ring two seals and start
Sealing between cabin；Ring seal face is bonded with the sealing surface of one end of interior stationary ring and outer stationary ring；Outer stationary ring and interior stationary ring peace
On turbine cylinder, combustion gas is isolated by outer stationary ring O-ring in outer stationary ring, and passes through circumferentially uniformly distributed outer stationary ring spring compression
Other end sealing surface and the wear-compensating for realizing outer stationary ring；Enging cabin lubricating oil is isolated by interior stationary ring O-ring in interior stationary ring, and
Sealing surface and the interior stationary ring wear-compensating of realization by the circumferentially uniformly distributed interior stationary ring spring compression other end；By outer stationary ring inner ring
Hole pin is installed with four holes axially arranging on interior stationary ring outer ring, outer stationary ring inner ring and hole pin are clearance fit,
Interior stationary ring outer ring and hole pin are clearance fit, and one end of hole pin is fixed on turbine cylinder, and and turbine casing
It is interference fit between body, prevents cooling water from leaking.
The outer stationary ring and interior stationary ring are inlayed by metal and graphite to be formed.
Beneficial effect
A kind of radial direction double end-face mechanical sealing device proposed by the present invention, has the beneficial effect that:
1, using the seal form of radial direction double end-face, axial dimension is shorter, and the distance for avoiding turbine disk cantilever segment is too long,
The rigidity of high-speed turbine machine rotor system is improved, it is compact-sized；
2, it by circumferentially uniformly distributed hole pin, introduces cooling medium and mechanical seal is lubricated and is cooled down, mention significantly
High working time of the mechanical seal under ultrahigh speed, extend service life, and it is cooling more evenly, cooling effect is more preferably；
3, the cooling duct introduced can make two layers of mechanical seal by adjusting type, the pressure and other parameters of cooling medium
The working conditions such as pressure difference, friction reach most preferably, reduce mechanical seal end surface abrasion, extend service life；
4, the split type structure of rotating ring is more advantageous to maintenance, detection, and rotating ring can produce certain benefit under stress condition
It repays, absorption vibration ability is more preferable, better tightness.
Detailed description of the invention
Fig. 1 mechanically-sealing apparatus schematic diagram of the present invention
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
Rotating ring 8 is pressed on turbine side surface by axle sleeve, real by angle seal O-ring 7 and 9 two seals of rotating ring O-ring
Sealing between existing turbine gas and enging cabin.Combustion gas is isolated by outer stationary ring O-ring 5 in outer stationary ring 6, and by circumferential equal
The outer stationary ring spring 2 of cloth compresses sealing surface and realizes stationary ring wear-compensating.Engine is isolated by interior stationary ring O-ring 3 in interior stationary ring 4
Cabin lubricating oil, and sealing surface is compressed by circumferentially uniformly distributed interior stationary ring spring 10 and realizes stationary ring wear-compensating.Outer stationary ring 6 with it is interior
There are gaps between stationary ring 4, and the discharge of cooling water is realized by this gap.Meanwhile by outside outer 6 inner ring of stationary ring and interior stationary ring 4
Hole pin 1 is installed in four holes axially arranged on circle, cooling water by flow into the hole of hole pin 1 mechanical seal it is intracavitary into
Row cooling, is consequently formed mechanical seal chilled(cooling) water return (CWR).In addition, 1 right end of hole pin is fixed on shell, can also effectively prevent
Interior stationary ring 3, outer stationary ring 5 rotate.
Cooling water feeds hole pin 1 by shell, intracavitary by flowing into mechanical seal in the hole of hole pin 1, i.e., interior quiet
It is cooled down between ring 4 and outer stationary ring 6, passes through the gap between interior stationary ring 4 and outer stationary ring 6 after cooling and flow into shell, and
It is discharged by shell, mechanical seal chilled(cooling) water return (CWR) is consequently formed.Hole pin 1 is fixed on shell, respectively with interior stationary ring component 4
The semicircle orifice of 6 inner ring of outer ring and outer stationary ring cooperates, to prevent interior stationary ring 4 and outer stationary ring 6 from rotating.Interior stationary ring component 4 by
Metal and graphite are inlayed, and outer stationary ring 6 is inlayed by metal and graphite, and mosaic surface is interference fit, ensure that mosaic surface
Leakproofness.
In Fig. 1, the right end of hole pin 1 is fixed on turbine cylinder, and is interference fit between shell, is prevented
Cooling water leakage.It is packed into spring 2.In being packed on interior stationary ring 4 after stationary ring O-ring 3, interior stationary ring 4 is packed into shell, interior stationary ring 4
Outer ring and hole pin 1 are clearance fit.After being packed into outer stationary ring O-ring 5 on outer stationary ring 6, outer stationary ring 6 is packed into shell, outside
6 inner ring of stationary ring and hole pin 1 are clearance fit.Angle seal O-ring 7 and rotating ring O-ring 9 are packed into rotating ring 8 later, and will be moved
Ring 8 is placed on the sealing surface of interior stationary ring 4 and outer stationary ring 6, is applied pressure to rotating ring 8 by turbine shaft end locking nut, is made
It obtains 8 sealing surface of rotating ring to be bonded with the sealing surface of interior stationary ring 4 and outer stationary ring 6, to realize sealing.
Claims (2)
1. a kind of radial direction double end-face mechanical sealing device, it is characterised in that including hole pin (1), outer stationary ring spring (2), interior quiet
Ring O-ring (3), interior stationary ring (4), outer stationary ring O-ring (5), outer stationary ring (6), angle seal O-ring (7), rotating ring (8), rotating ring are O-shaped
Enclose (9) and interior stationary ring spring (10)；Rotating ring (8) is pressed on turbine side surface by axle sleeve, by angle seal O-ring (7) and moves
Ring O-ring (9) two seals realize the sealing between turbine gas and enging cabin；Rotating ring (8) sealing surface and interior stationary ring (4)
It is bonded with the sealing surface of one end of outer stationary ring (6)；Outer stationary ring (6) and interior stationary ring (4) are mounted on turbine cylinder, outer stationary ring
(6) combustion gas is isolated by outer stationary ring O-ring (5), and other end sealing surface is compressed simultaneously by circumferentially uniformly distributed outer stationary ring spring (2)
Realize the wear-compensating of outer stationary ring (6)；Enging cabin lubricating oil is isolated by interior stationary ring O-ring (3) in interior stationary ring (4), and passes through
Circumferentially uniformly distributed interior stationary ring spring (10) compresses the sealing surface of the other end and realizes interior stationary ring (4) wear-compensating；By outer stationary ring
(6) four holes axially arranging on inner ring and interior stationary ring (4) outer ring are installed hole pin (1), outer stationary ring (6) inner ring with it is with holes
Pin (1) is clearance fit, and interior stationary ring (4) outer ring and hole pin (1) are clearance fit, and one end of hole pin (1) is fixed
It is interference fit on turbine cylinder, and between turbine cylinder, prevents cooling water from leaking.
2. radial direction double end-face mechanical sealing device according to claim 1, it is characterised in that the outer stationary ring (6) and interior
Stationary ring (4), which is inlayed by metal and graphite, to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246389.2A CN109139913A (en) | 2018-10-24 | 2018-10-24 | A kind of radial direction double end-face mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246389.2A CN109139913A (en) | 2018-10-24 | 2018-10-24 | A kind of radial direction double end-face mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109139913A true CN109139913A (en) | 2019-01-04 |
Family
ID=64809894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811246389.2A Pending CN109139913A (en) | 2018-10-24 | 2018-10-24 | A kind of radial direction double end-face mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109139913A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096874A (en) * | 2020-08-31 | 2020-12-18 | 东台市光明机械密封有限公司 | High-wear-resistance double-end-face mechanical sealing element and machining process thereof |
| CN113720535A (en) * | 2021-08-05 | 2021-11-30 | 北京精密机电控制设备研究所 | Method for testing mechanical sealing performance and ultrahigh-speed running device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158405A (en) * | 2007-06-21 | 2008-04-09 | 丹东克隆集团有限责任公司 | Radial direction double end-face mechanical sealing device |
| CN206398084U (en) * | 2017-01-16 | 2017-08-11 | 杭州青华实业有限公司 | Pitot tube pump radial double mechanical seal |
-
2018
- 2018-10-24 CN CN201811246389.2A patent/CN109139913A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158405A (en) * | 2007-06-21 | 2008-04-09 | 丹东克隆集团有限责任公司 | Radial direction double end-face mechanical sealing device |
| CN206398084U (en) * | 2017-01-16 | 2017-08-11 | 杭州青华实业有限公司 | Pitot tube pump radial double mechanical seal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096874A (en) * | 2020-08-31 | 2020-12-18 | 东台市光明机械密封有限公司 | High-wear-resistance double-end-face mechanical sealing element and machining process thereof |
| CN113720535A (en) * | 2021-08-05 | 2021-11-30 | 北京精密机电控制设备研究所 | Method for testing mechanical sealing performance and ultrahigh-speed running device |
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Application publication date: 20190104 |