CN106090223A - A kind of high pressure deformation is across the paillon foil gas film face seal structure of yardstick type hole texture - Google Patents
A kind of high pressure deformation is across the paillon foil gas film face seal structure of yardstick type hole texture Download PDFInfo
- Publication number
- CN106090223A CN106090223A CN201610566139.1A CN201610566139A CN106090223A CN 106090223 A CN106090223 A CN 106090223A CN 201610566139 A CN201610566139 A CN 201610566139A CN 106090223 A CN106090223 A CN 106090223A
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- Prior art keywords
- ring
- paillon foil
- type hole
- annular
- sealing
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Classifications
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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
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- 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
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Abstract
A kind of high pressure deformation is across the paillon foil gas film face seal structure of yardstick type hole texture, including rotating ring and the stationary ring of gas film sealing；In rotating ring or stationary ring, the seal face of at least one sealing ring is band paillon foil end face, sealing ring with paillon foil end face includes circular ring body, annular paillon foil and trip bolt, ring outer body caves in a little and forms annular concave surface, convexes to form annular step inside ring body a little；The upper surface of annular step is formed and seals dam, several are had according to the symmetrical type hole of center of rotation on annular concave surface, type hole depth is micron order, it is distributed uniformly and circumferentially formation type orifice ring band, radially distributed shape forming hole arranges, the outside common tangent of described type hole row, through the center of circle of annular concave surface, is respectively formed sealing weir district between the row of between type orifice ring band or type hole；Be close to ring this circular ring type concave surface, upper surface flushes with sealing dam by paillon foil lower surface for annular, and described annular paillon foil is fixed with ring body by screw.
Description
(1) technical field
The present invention relates to mechanical end face sealing structure design field, be specifically related to a kind of based on across yardstick waviness deformation
The paillon foil gas film face seal structure of mechanism, is particularly well-suited to the axle end sealing device of high-pressure rotary machinery.
(2) background technology
Air film end face seal as a kind of gas lubrication non-contact mechanical seal form with its low leakage, low-power consumption, length
The significantly performance advantage such as life-span obtains extensively application, such as compressor, pump, reactor and wind on the shaft end seal of rotating machinery
The shaft end seal of the rotating machineries such as machine.It is known that it is by the week of artificial processing micron level on sealing ring end face that waviness seals
To waviness, forming gas dynamic pressure effect by circumference waviness, seal face is opened and is realized noncontact the most at last, but micron order at present
Circumference waviness processing difficulties and processing cost are higher, once waviness machine-shaping simultaneously, and its waviness pattern will be unable to extraneous work
Condition changes and carries out adaptivity regulation.In recent years, along with the fast development of petrochemical industry Yu space flight and aviation, it is desirable to air film end face
Seal and can adapt to high parameter, variable working condition and severe sealed environment, and quick along with " controlled " and " self adaptation " technology
Development, provides new thinking to the design of mechanical seal end surface " dynamically " waviness.
The product that foil bearing develops as " self adaptation " technology, adjusts by the self adaptation between foil deformation and mould
Joint so that it is have that dynamic stability is high, an impact resisting vibrating and to advantages such as rotor concentricity requirement are low, uses for reference the phase of foil bearing
Closing principle the good characteristic by paillon foil, " dynamically " waviness making paillon foil end face seal change with sealed medium pressure is designed to
For possible.
(3) summary of the invention
Cannot be with after the invention solves the problems that the seal face circumference waviness processing difficulties of prior art and being processed and formed at one time
Operating mode and the defect of mould change, it is provided that a kind of end face circumference waviness is formed easily, can change and regulate and control mould change with mould
Thus reach the paillon foil gas film face seal structure of dynamic equilibrium.
The present invention is to be achieved through the following technical solutions:
A kind of high pressure deformation across the paillon foil gas film face seal structure of yardstick type hole texture, including gas film sealing rotating ring and
Stationary ring；In described rotating ring or stationary ring, the seal face of at least one sealing ring is band paillon foil end face, described band paillon foil end face close
Seal ring includes circular ring body 1, annular paillon foil 5 and trip bolt 6, and described ring outer body caves in formation annular a little
Concave surface, convexes to form annular step a little inside ring body；The upper surface of described annular step is formed and seals dam 4, described
Have on annular concave surface several according to the symmetrical type hole 2 of center of rotation, described type hole depth is micron order, circumferentially
Direction is uniformly distributed formation type orifice ring band, and radially distributed shape forming hole arranges, and the outside common tangent of described type hole row is through annular
The center of circle of concave surface, the region between region and type hole row between type orifice ring band is formed and seals weir district 3；Described annular paillon foil 5
Lower surface is close to ring this circular ring type concave surface, upper surface flushes with sealing dam, described annular paillon foil 5 by trip bolt 6 with
Ring body 1 is fixed.
Further, described type hole depth span is 2～10 μm, and type hole diameter span is 1～5mm.
Further, the angle theta of two outside common tangents of same type hole rowgAdjacent outside common tangent folder with adjacent amphitypy hole row
Angle θlRatio θg/θlSpan be 0.25～1.5.
Further, described type hole shape can be circular, oval, olive shape or Else Rule shape.
Operation principle of the present invention:
What the present invention provided under high pressure produces deformation and by micrometer level depth, grade diameter type hole based on paillon foil
Effect of contraction, makes foil seal face form the paillon foil gas film face seal structure across yardstick waviness scale feature, is specifically described as:
Ring this circular ring type concave surface has several according to the symmetrical type hole of center of rotation, described type hole depth is micron
Level, is distributed uniformly and circumferentially formation type orifice ring band, and radially distributed shape forming hole arranges, the outside common tangent warp of described type hole row
Cross the center of circle of annular concave surface, between the row of between type orifice ring band or type hole, be respectively formed sealing weir district；Paillon foil is by screw with ring originally
After body assembling, the foil area stress effect above type hole is easily caved in.When there is certain pressure medium in annular seal space,
Under gas-static effect, the foil area above type hole deforms, and paillon foil occurs micron order to cave in type hole, and type hole arranges
Between weir district above paillon foil generation micron order epirelief so that paillon foil produce axial and circumferential shape become the week across yardstick
To waviness, the number of ripple depends on the number in circumference type hole.After sealing operating, the circumferential waviness deformation that paillon foil end face is formed will make
Seal face produces certain gas dynamic pressure effect and makes face opening, changes or by external disturbance when sealing operating mode
Time, seal face mould will change, and the change of mould causes paillon foil end face circumference waviness pattern, the change of yardstick, thus
Affect gas dynamic pressure effect further, finally make to carry out between mould and waviness pattern, yardstick self adaptation coordination, therefore can have
Effect ensures that mould and Thickness Variation are in the state of dynamic equilibrium；It addition, each waveform is as single adaptive unit, can enter
Row Local uniqueness, between ripple and ripple, the synergism of deformation can strengthen again the dynamic stability sealing operation simultaneously；Turn sealing
When speed raises, the reduction of waveform leeward side pressure makes paillon foil divergence form deformation at this reduce, it is suppressed that the formation of underbalance effect.
The method have the advantages that
Mould change and paillon foil end face influencing each other between yardstick circumference waviness pattern can form hydrodynamic effect
Auto-control mechanism, improve and seal the dynamic stability run, the generation of underbalance effect can be prevented effectively from simultaneously, there is anti-interference
Kinetic force is strong, dynamic stability is good, it is little to leak, reliability is high, be suitable for high pressure and the advantage such as variable working condition environment.
(4) accompanying drawing explanation
Fig. 1 is the exploded perspective view of the present invention.
Fig. 2 is the assembling schematic diagram of the present invention.
Fig. 3 is the ring body construction schematic diagram of the present invention.
Fig. 4 is that schematic diagram is arranged in the type hole site of the present invention.
Fig. 5 is the foil configuration schematic diagram of the present invention.
Wherein:
1-ring body；2-type hole；3-weir district；4-seals dam；5-paillon foil；6-screw；The outside common tangent of 7-type hole row.
(5) detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in detail.
Referring to figs. 1 through shown in Fig. 5, high pressure deformation is across the paillon foil gas film face seal structure of yardstick type hole texture, including gas
The rotating ring of film phonograph seal and stationary ring；In described rotating ring or stationary ring, the seal face of at least one sealing ring is band paillon foil end face, described
Sealing ring with paillon foil end face includes circular ring body 1, annular paillon foil 5 and trip bolt 6, and described ring outer body is a little
Depression forms annular concave surface, convexes to form annular step inside ring body a little；The upper surface shape of described annular step
Become to seal dam 4, described annular concave surface has several according to the symmetrical type hole 2 of center of rotation, described type hole depth
For micron order, being distributed uniformly and circumferentially formation type orifice ring band, radially distributed shape forming hole arranges, the granddad of described type hole row
Tangent line is through the center of circle of annular concave surface, and the region between region and type hole row between type orifice ring band is formed and seals weir district 3；Institute
The lower surface stating annular paillon foil 5 is close to ring this circular ring type concave surface, upper surface flushes with sealing dam, and described annular paillon foil 5 is logical
Cross trip bolt 6 to fix with ring body 1.Foil area stress above type hole 2 easily caves in, the foil area above type hole 2
Depression causes the paillon foil above weir district 3 protruding, and therefore under the effect of gas film pressure, annular paillon foil 5 will form circumference waviness.
The groove depth span in described type hole is 2～10 μm, and diameter span is 1～5mm, and paillon foil 5 is in mould effect
The waviness of lower formation is micron order yardstick in the axial direction, is grade yardstick in the circumferential.Two granddads of same type hole row cut
The angle theta of line 7gAngle theta with the adjacent outside common tangent 7 of adjacent amphitypy hole rowlRatio (θg/θl) span be
0.25～1.5.Described type hole shape can be circular, oval, olive shape or other contour is the rule that smooth curve is constituted
Shape, the bottom surface in described type hole is planar base surface, arc surface, parabola or the conical surface.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept, the protection model of the present invention
Enclosing and be not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes people in the art
Member according to present inventive concept it is conceivable that equivalent technologies means.
Claims (4)
1. high pressure deformation is across a paillon foil gas film face seal structure for yardstick type hole texture, including the rotating ring of gas film sealing and quiet
Ring；In described rotating ring or stationary ring, the seal face of at least one sealing ring is band paillon foil end face, the sealing of described band paillon foil end face
Ring includes circular ring body, annular paillon foil and trip bolt, and described ring outer body caves in a little and forms annular concave surface,
Annular step is convexed to form a little inside ring body；The upper surface of described annular step is formed and seals dam, described annular
Have on concave surface several according to the symmetrical type hole of center of rotation, described type hole depth is micron order, the most all
Even distribution formation type orifice ring band, radially distributed shape forming hole arranges, and the outside common tangent of described type hole row is through annular concave surface
The center of circle, the region between region and type hole row between type orifice ring band is formed and seals weir district；Described annular paillon foil lower surface and ring
This circular ring type concave surface is close to, upper surface flushes with sealing dam, and described annular paillon foil is fixed with ring body by screw.
2. high pressure deformation as claimed in claim 1 is across the paillon foil gas film face seal structure of yardstick type hole texture, and its feature exists
In: described type hole depth span is 2～10 μm, and type hole diameter span is 1～5mm.
3. high pressure deformation as claimed in claim 2 is across the paillon foil gas film face seal structure of yardstick type hole texture, and its feature exists
In: the angle theta of two outside common tangents of same type hole rowgAdjacent outside common tangent angle theta with adjacent amphitypy hole rowlRatio θg/
θlSpan be 0.25～1.5.
4. high pressure deformation as claimed in claim 3 is across the paillon foil gas film face seal structure of yardstick type hole texture, and its feature exists
Can be circular, oval, olive shape or other perimeter line is the regular shape of smooth curve in: described type hole shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566139.1A CN106090223B (en) | 2016-07-15 | 2016-07-15 | A kind of paillon foil gas film face seal structure of across the yardstick type hole texture of high pressure deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566139.1A CN106090223B (en) | 2016-07-15 | 2016-07-15 | A kind of paillon foil gas film face seal structure of across the yardstick type hole texture of high pressure deformation |
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| Publication Number | Publication Date |
|---|---|
| CN106090223A true CN106090223A (en) | 2016-11-09 |
| CN106090223B CN106090223B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610566139.1A Active CN106090223B (en) | 2016-07-15 | 2016-07-15 | A kind of paillon foil gas film face seal structure of across the yardstick type hole texture of high pressure deformation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269848A (en) * | 2017-07-06 | 2017-10-20 | 浙江工业大学 | Paillon foil gas film face seal structure based on magneto-shape-memory effect |
| CN113217632A (en) * | 2021-05-20 | 2021-08-06 | 中国计量大学 | High-pressure-resistant low-leakage foil end face air film sealing structure |
| CN113513594A (en) * | 2021-05-20 | 2021-10-19 | 中国计量大学 | Foil end face air film sealing structure with dynamic pressure floating sealing dam |
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| US5499824A (en) * | 1994-03-29 | 1996-03-19 | Georgia Tech Research Corporation | Mechanical seal with compliant face |
| US20040207158A1 (en) * | 2001-07-06 | 2004-10-21 | Agrawal Giridhari L. | Hydrodynamic foil face seal |
| US20080260455A1 (en) * | 2007-04-17 | 2008-10-23 | Air Products And Chemicals, Inc. | Composite Seal |
| CN100564962C (en) * | 2007-02-15 | 2009-12-02 | 浙江工业大学 | Variable distribution porous end face mechanical sealing structure |
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| CN104913061A (en) * | 2015-06-15 | 2015-09-16 | 浙江工业大学 | Foil end face air film sealing structure capable of rotating bi-directionally |
| CN103122998B (en) * | 2013-02-26 | 2015-10-28 | 浙江工业大学 | Imitative sharkskin streamline type groove end surface mechanical sealing structure |
| CN105090512A (en) * | 2015-07-22 | 2015-11-25 | 哈尔滨工业大学 | Non-contact type dynamic-pressing foil sealing piece for rotary machine |
| CN103470762B (en) * | 2013-08-20 | 2016-05-18 | 浙江工业大学 | Inclination gradual change micro-pore face non-contact mechanical seal structure |
| CN205978438U (en) * | 2016-07-15 | 2017-02-22 | 浙江工业大学 | Paillon foil terminal surface air film seal structure of yardstick type hole texture is striden in high pressure deformation |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5499824A (en) * | 1994-03-29 | 1996-03-19 | Georgia Tech Research Corporation | Mechanical seal with compliant face |
| US20040207158A1 (en) * | 2001-07-06 | 2004-10-21 | Agrawal Giridhari L. | Hydrodynamic foil face seal |
| CN100564962C (en) * | 2007-02-15 | 2009-12-02 | 浙江工业大学 | Variable distribution porous end face mechanical sealing structure |
| US20080260455A1 (en) * | 2007-04-17 | 2008-10-23 | Air Products And Chemicals, Inc. | Composite Seal |
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| CN104913061A (en) * | 2015-06-15 | 2015-09-16 | 浙江工业大学 | Foil end face air film sealing structure capable of rotating bi-directionally |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269848A (en) * | 2017-07-06 | 2017-10-20 | 浙江工业大学 | Paillon foil gas film face seal structure based on magneto-shape-memory effect |
| CN113217632A (en) * | 2021-05-20 | 2021-08-06 | 中国计量大学 | High-pressure-resistant low-leakage foil end face air film sealing structure |
| CN113513594A (en) * | 2021-05-20 | 2021-10-19 | 中国计量大学 | Foil end face air film sealing structure with dynamic pressure floating sealing dam |
| CN113217632B (en) * | 2021-05-20 | 2023-11-03 | 中国计量大学 | High-pressure-resistant low-leakage foil end face air film sealing structure |
| CN113513594B (en) * | 2021-05-20 | 2024-03-19 | 中国计量大学 | Foil end face air film sealing structure with dynamic pressure floating sealing dam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106090223B (en) | 2017-11-07 |
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