CN102128269A - Conical surface mechanical sealing device - Google Patents
Conical surface mechanical sealing device Download PDFInfo
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- CN102128269A CN102128269A CN2011100457846A CN201110045784A CN102128269A CN 102128269 A CN102128269 A CN 102128269A CN 2011100457846 A CN2011100457846 A CN 2011100457846A CN 201110045784 A CN201110045784 A CN 201110045784A CN 102128269 A CN102128269 A CN 102128269A
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- tapered
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- conical surface
- mechanical seal
- conical
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- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005452 bending Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 125000002837 carbocyclic group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
本发明涉及一种锥面机械密封装置，其特征是：机械密封静止环1上有锥面a，旋转环2上有锥面b，锥面a和锥面b配对形成密封面，该密封面可以是锥面a和锥面b直接接触，也可以是锥面a和锥面b以一微小间隙分离。其优点是：与传统机械密封相比，锥面机械密封装置的两密封环具有更好的自动对中性，更好的抗轴剖面扭转变形和机组主轴弯曲变形的能力。本发明适用于各种旋转机械的轴端密封。
The invention relates to a conical mechanical seal device, which is characterized in that: a mechanical seal static ring 1 has a conical surface a, a rotating ring 2 has a conical surface b, and the conical surface a and conical surface b are paired to form a sealing surface, the sealing surface It may be that the cone surface a and the cone surface b are in direct contact, or that the cone surface a and the cone surface b are separated by a small gap. Its advantages are: compared with the traditional mechanical seal, the two sealing rings of the cone mechanical seal device have better self-alignment, better resistance to torsional deformation of the shaft section and bending deformation of the main shaft of the unit. The invention is suitable for shaft end seals of various rotating machines.
Description
Technical field
The invention belongs to the shaft end seal of rotating machinery, particularly a kind of Conic Mechanical Seal device, this Conic Mechanical Seal device can be used for the shaft end seal of rotation class machine such as the compressor, decompressor, seperator, pump, reactor of various types.
Background technique
Mechanical seal is widely used in numerous rotating machinery axle heads, complexity because of its working condition, further investigation to mechanical seal will be long-term, arduous and must constantly an advance process, particularly seal the research of mating face's shape and performance thereof, be the emphasis and the difficult point problem of The Seal Technology Study always.Two processes have mainly been experienced in the research and development of rotating machinery axle head motive sealing:
1. radial seal
Early stage rotating machinery main shaft seal adopts labyrinth seal, and the labyrinth seal leakage rate is bigger, and can only adapt to the lower occasion of pressure, needs complicated auxiliary system to handle a large amount of seal leakage gas usually.Second generation rotating machinery main shaft seal is the floating-ring seal of film lubrication.In typical floating-ring seal, two groups of sealing surfaces are arranged, the fluid that pressure is high slightly than sealed medium pressure is injected in the sealing system, stops the leakage of sealed medium, simultaneously the coolant seal element.Until today, still have a small amount of floating-ring seal on the rotation unit, to move.Floating-ring seal exists the quench fluid consumption big, the sealing oil system complexity, and investment is many, and floor space is big, shortcomings such as operation and maintenance cost height.
Labyrinth seal and floating-ring seal all belong to radial seal, are the radial space between main shaft and stationary seal face is sealed.Because guarantee enough gaps, come in contact between main shaft and stationary seal face preventing, thereby limited technical merit and working life that this type of sealing can reach.
2. end face seal
Nineteen fifty, the researcher has developed contact-type mechanical seal, and is applied to the refrigeration industry, prevents that the cooling liquid of costliness from leaking vertically.This contact-type mechanical seal belongs to end face seal, with the radial seal difference, its actual sealing surface is perpendicular to two surfaces (plane) of rotating machinery main shaft, and such structure allows the directly contact in the workpiece process of dynamic and static Sealing, thus the sealability of increasing substantially.
Early stage mechanical seal is contact-type mechanical seal, be sealed into the master with wet type, subsequently, on the basis of contact-type mechanical seal, the technician has researched and developed out non-contact mechanical seal, and particularly dried operation type gas face seals (dry gas seals) has obtained extremely successful application in the rotating machinery axle head sealing that with the compressor is representative.
Present mechanical seal belongs to end face seal, and its actual sealing surface is perpendicular to two surfaces (plane) of rotating machinery main shaft, is characterized in:
1) insensitive to the wearing and tearing of sealing surface.Behind the contact seal surface abrasion, floating ring can compensate automatically to wear extent under the effect of closing force, and noncontact seal does not have surface abrasion substantially.
2) axial float had good tracing ability.
More than 2 conclusions get up, all showed in fact end face seal along the spin axis direction anti-ly move, the superior function of factor such as wearing and tearing.But self-alignment performance for two seal ring axis in the sealing installation and operation process, and the torsional deflection that edge axle section takes place when seal face, or the set main shaft at rotating ring place occurs bending and deformation, local contact pressure increases between two sealing surfaces that caused, the fretting wear aggravation, and the circumferentially processing of problem such as pulsation of the noncontact seal end face fluid film pressure that produces therefrom, present end surface mechanical sealing has to be strengthened.And for above these problems, Conic Mechanical Seal then has stronger adaptability.
In sum, design a kind of Conic Mechanical Seal device, this Conic Mechanical Seal device has automatic centering, better section torsional deflection of anti-axle and the diastrophic ability of set main shaft, thereby further widen the Applicable scope of mechanical seal, promote the working life of unit sealing.
Summary of the invention
The purpose of this invention is to provide a kind of Conic Mechanical Seal device, two seal rings of this Conic Mechanical Seal device have automatic centering, better section torsional deflection of anti-axle and the diastrophic ability of set main shaft.
The object of the present invention is achieved like this: a kind of Conic Mechanical Seal device, form by the stationary ring 1 that has conical surface a, the rotating ring 2 that has conical surface b and other correlated parts, the conical surface a of stationary ring 1 and the conical surface b on the rotating ring 2 are face-to-face installation, form sealing surface, the sealing face can be that conical surface a directly contacts with conical surface b, also can be that conical surface a separates with a micro-gap with conical surface b.It is characterized in that: sealing surface is conical surface shape.
The present invention mainly adopts following technical measures to realize:
The conical surface a of described Conic Mechanical Seal device and conical surface b both can be that conical surface also can be the taper hole face, but when conical surface a was conical surface (taper hole face), conical surface b was necessary for taper hole face (conical surface).
The tapering α of the taper hole face of described Conic Mechanical Seal device
1Tapering α with conical surface
2Satisfy relation: 90 °＞α
1〉=α
2＞0 °.
Among the conical surface a and conical surface b of described Conic Mechanical Seal device, can or on two conical surfaces, fluid dynamic pressure groove be set simultaneously at one, or two conical surfaces are not provided with fluid dynamic pressure groove.
Described Conic Mechanical Seal device, the fluid dynamic pressure groove that is provided with on its conical surface can be that deep trouth also can be a shallow slot, and its groove depth scope is between 0.01 micron～3 millimeters.
Described Conic Mechanical Seal device, the layout of its sealing can be the single-stage sealings of having only one group of sealing surface, also tandem seal or the double seals that can be made up of sealing surface more than two groups.
Described Conic Mechanical Seal device in multi-stage sealed layout, can be the combination seal that Conic Mechanical Seal follows other form motive sealing to form.
The present invention has following characteristics:
1) seal face is the conical surface;
2) two seal rings have automatic centering;
3) have better section torsional deflection of anti-axle and the diastrophic ability of set main shaft.
Description of drawings
Fig. 1 is a kind of contact seal structural representation that two sealing surfaces directly contact in the Conic Mechanical Seal device of the present invention.
Fig. 2 is the upper conical sealing surface structure schematic representation of stationary ring in the conical surface contact-type mechanical seal device of the present invention.
Fig. 3 is the upper conical sealing surface structure schematic representation of rotating ring in the conical surface contact-type mechanical seal device of the present invention.
Fig. 4 is a kind of noncontact seal structural representation that two sealing surfaces separate with a micro-gap in the Conic Mechanical Seal device of the present invention.
Fig. 5 is in the Conic Mechanical Seal device of the present invention, and sealing surface is carved with a kind of noncontact seal structural representation of equally distributed hydrodynamic shallow slot on the rotating ring.
Fig. 6 is a rotating ring conical seal (contact) face upper-end surface shallow slot structure schematic representation in the conical surface non-contact mechanical seal device of the present invention.
The symbol implication is as follows in the accompanying drawing:
α
1---taper hole face cone degree.
α
2---the conical surface tapering.
R
1---sealing surface shallow slot internal diameter.
R
2---sealing surface shallow slot external diameter.
A---the conical surface on the stationary ring.
B---the conical surface on the rotating ring.
C---sealing surface shallow slot structure.
ω
1---the rotating ring angular velocity of rotation.
h
0---contactless Conic Mechanical Seal end face axial gap.
H---upstream (high pressure side).
L---downstream (low voltage side).
Embodiment
Below in conjunction with embodiment the present invention is analyzed.
The concrete enforcement of the present invention is of a great variety, whether offers the different analyzing examples explanations of dynamic pressure groove according to this Conic Mechanical Seal way of contact, sealing surface at this.
Embodiment 1: consult Fig. 1, Fig. 2, Fig. 3
Fig. 1 is the structural representation of the embodiment of the invention 1.This Conic Mechanical Seal device comprises the stationary ring 1 that has conical surface a, the rotating ring 2 that has conical surface b, stationary seat 3, axle sleeve 4, round section joint ring 5, tolerance ring 6, clamping sleeve 7, throw-out collar 8, spring 9, stop pin 10 etc.The characteristics of present embodiment are: two sealing surfaces (that is: conical surface a and conical surface b) directly contact.
According to Fig. 1, Fig. 2, Fig. 3, the conical surface a on the stationary ring 1 is the taper hole face, and its tapering is α
1, the conical surface b on the rotating ring 2 is a conical surface, its tapering is α
2, two taperings close and are: α
1〉=α
2 Stationary ring 1 is face-to-face coaxial line with rotating ring 2 to be installed, and forms conical seal (contact) face, and the sealing face is that taper hole face a directly contacts with circular cone b, belongs to the contact-type mechanical seal device.
The outside diameter of seal ring is upstream side H, and internal side diameter is downstream side L, and the flow direction of dielectric leakage is to be leaked to internal side diameter (downstream side) by outside diameter (upstream side), and the effect of conical seal (contact) face is exactly the leakage flow that stops medium.
Embodiment 2: consult Fig. 4
Fig. 4 is the structural representation of the embodiment of the invention 2.This Conic Mechanical Seal device comprises the stationary ring 1 that has conical surface a, the rotating ring 2 that has conical surface b, stationary seat 3, axle sleeve 4, round section joint ring 5, tolerance ring 6, clamping sleeve 7, throw-out collar 8, spring 9, stop pin 10 etc.The characteristics of present embodiment are: two sealing surfaces (that is: conical surface a and conical surface b) separate with a micro-gap h0.
According to Fig. 4, the conical surface a on the stationary ring 1 is the taper hole face, and its tapering is α
1, the conical surface b on the rotating ring 2 is a conical surface, its tapering is α
2, two taperings close and are: α
1〉=α
2 Stationary ring 1 is face-to-face coaxial line with rotating ring 2 to be installed, and forms conical seal (contact) face, and with a micro-gap h
0Separate, form taper noncontact seal face, belong to non-contact mechanical seal device.
The outside diameter of seal ring is upstream side H, and internal side diameter is downstream side L, and the flow direction of dielectric leakage is to be leaked to internal side diameter (downstream side) by outside diameter (upstream side), and the effect of taper noncontact seal face is exactly the leakage flow that stops medium.
Embodiment 3: consult Fig. 5, Fig. 6
Fig. 5, Fig. 6 are the structural representations of the embodiment of the invention 3.This Conic Mechanical Seal device comprises the stationary ring 1 that has conical surface a, the rotating ring 2 that has conical surface b, stationary seat 3, axle sleeve 4, round section joint ring 5, tolerance ring 6, clamping sleeve 7, throw-out collar 8, spring 9, stop pin 10 etc.The characteristics of present embodiment are: offer fluid dynamic pressure groove c on rotating ring conical seal (contact) face b.
According to Fig. 5, the conical surface a on the stationary ring 1 is the taper hole face, and its tapering is α
1, the conical surface b on the rotating ring 2 is a conical surface, its tapering is α
2, two taperings close and are: α
1〉=α
2 Stationary ring 1 is face-to-face coaxial line with rotating ring 2 to be installed, and forms conical seal (contact) face, and two sealing surfaces are under the effect of shallow slot c hydrodynamic pressure, with a micro-gap h
0Separate, form taper noncontact seal face, belong to non-contact mechanical seal device.
The outside diameter of seal ring is upstream side H, and internal side diameter is downstream side L, and the flow direction of dielectric leakage is to be leaked to internal side diameter (downstream side) by outside diameter (upstream side), and the effect of taper noncontact seal face is exactly the leakage flow that stops medium.
In above embodiment, emphasis has embodied the Conic Mechanical Seal way of contact, whether sealing surface offers the dynamic pressure groove.In order more clearly to describe key problem, all only relate to the single-stage sealing configuration among the above embodiment, and in actual use, the sealing total arrangement can have multiple pattern as required as labyrinth (more than the two-stage) in the middle of: mechanical single seal, double seals, tandem seal (more than the two-stage), the series connection band, also can follow other seal style composition combined labyrinth and carbon gland such as floating-ring seal, carbocyclic ring sealing, labyrinth seal.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100457846A CN102128269A (en) | 2011-02-25 | 2011-02-25 | Conical surface mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100457846A CN102128269A (en) | 2011-02-25 | 2011-02-25 | Conical surface mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102128269A true CN102128269A (en) | 2011-07-20 |
Family
ID=44266476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100457846A Pending CN102128269A (en) | 2011-02-25 | 2011-02-25 | Conical surface mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102128269A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359596A (en) * | 2011-09-26 | 2012-02-22 | 清华大学 | Seal structure with unidirectionally-rotatable three-dimensional L-shaped groove end face |
| CN106670930A (en) * | 2016-12-30 | 2017-05-17 | 西华大学 | Hot jacket type grinding device for machining reverse conical surface sealing ring |
| CN106944890A (en) * | 2017-03-20 | 2017-07-14 | 西华大学 | The set pressure type grinding attachment of positive conical surface sealing ring |
| CN107420550A (en) * | 2017-06-01 | 2017-12-01 | 武汉船用机械有限责任公司 | A kind of rotary sealing appts |
| CN107676486A (en) * | 2016-08-02 | 2018-02-09 | 宜兴优纳特机械有限公司 | A kind of Special seal for being applied to air blower and vavuum pump |
| CN110578801A (en) * | 2019-09-29 | 2019-12-17 | 西安石油大学 | An anchor dry gas sealing device |
| CN111895097A (en) * | 2020-08-05 | 2020-11-06 | 潍坊林凯机械有限公司 | V-shaped mechanical sealing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5192085A (en) * | 1990-12-17 | 1993-03-09 | Mconie Robert | Rubber drive system mechanical seal |
| RU2222741C2 (en) * | 2001-12-10 | 2004-01-27 | Открытое акционерное общество "Научно-производственное объединение энергетического машиностроения им. акад. В.П. Глушко" | Shaft standstill seal |
| CN201475330U (en) * | 2009-06-18 | 2010-05-19 | 刘亚林 | Rotary component end surface sealing device |
| CN202171002U (en) * | 2011-02-25 | 2012-03-21 | 西华大学 | Conical surface mechanical sealing device |
-
2011
- 2011-02-25 CN CN2011100457846A patent/CN102128269A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5192085A (en) * | 1990-12-17 | 1993-03-09 | Mconie Robert | Rubber drive system mechanical seal |
| RU2222741C2 (en) * | 2001-12-10 | 2004-01-27 | Открытое акционерное общество "Научно-производственное объединение энергетического машиностроения им. акад. В.П. Глушко" | Shaft standstill seal |
| CN201475330U (en) * | 2009-06-18 | 2010-05-19 | 刘亚林 | Rotary component end surface sealing device |
| CN202171002U (en) * | 2011-02-25 | 2012-03-21 | 西华大学 | Conical surface mechanical sealing device |
Non-Patent Citations (1)
| Title |
|---|
| 程建辉等: "锥面机械密封的载荷系数分析", 《农业机械学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359596A (en) * | 2011-09-26 | 2012-02-22 | 清华大学 | Seal structure with unidirectionally-rotatable three-dimensional L-shaped groove end face |
| CN107676486A (en) * | 2016-08-02 | 2018-02-09 | 宜兴优纳特机械有限公司 | A kind of Special seal for being applied to air blower and vavuum pump |
| CN106670930A (en) * | 2016-12-30 | 2017-05-17 | 西华大学 | Hot jacket type grinding device for machining reverse conical surface sealing ring |
| CN106670930B (en) * | 2016-12-30 | 2019-03-22 | 西华大学 | Process the thermal sleeve grinding attachment of inverted cone surface sealing ring |
| CN106944890A (en) * | 2017-03-20 | 2017-07-14 | 西华大学 | The set pressure type grinding attachment of positive conical surface sealing ring |
| CN107420550A (en) * | 2017-06-01 | 2017-12-01 | 武汉船用机械有限责任公司 | A kind of rotary sealing appts |
| CN107420550B (en) * | 2017-06-01 | 2019-07-05 | 武汉船用机械有限责任公司 | A kind of rotary sealing appts |
| CN110578801A (en) * | 2019-09-29 | 2019-12-17 | 西安石油大学 | An anchor dry gas sealing device |
| CN111895097A (en) * | 2020-08-05 | 2020-11-06 | 潍坊林凯机械有限公司 | V-shaped mechanical sealing device |
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Application publication date: 20110720 |