CN108050258A - A kind of mechanical seal structure of imitative brambles shape type groove - Google Patents
A kind of mechanical seal structure of imitative brambles shape type groove Download PDFInfo
- Publication number
- CN108050258A CN108050258A CN201711172895.7A CN201711172895A CN108050258A CN 108050258 A CN108050258 A CN 108050258A CN 201711172895 A CN201711172895 A CN 201711172895A CN 108050258 A CN108050258 A CN 108050258A
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- China
- Prior art keywords
- mechanical seal
- seal structure
- type groove
- shape type
- brambles
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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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
-
- 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
- F16J15/3408—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 at least one ring having an uneven slipping surface
- F16J15/3412—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 at least one ring having an uneven slipping surface with cavities
- F16J15/3416—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 at least one ring having an uneven slipping surface with cavities with at least one continuous groove
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention provides a kind of mechanical seal structure of imitative brambles shape type groove, its front end face, that is, sealing surface is made of outer shroud 1, inner ring 2, sealing weir area 3, seals dam area 4 and brambles shape type groove 5, they are all located at the different position on the front end face i.e. sealing surface of the mechanical seal structure；Present invention improves the lubricating status for opening, stopping stage end face, avoid the fretting wear of end face, extend service life；The present invention sealing have good stability, the failure it is possible to prevente effectively from touching under the extreme operating condition of small film thickness, small pressure difference is rubbed, realize sealing it is non-contact, raising it is wear-resistant, improve the reliability of sealing.
Description
Technical field
The present invention provides a kind of mechanical seal structure of imitative brambles shape type groove, and specifically, it is one kind in rotating ring or quiet
A certain number of imitative brambles connected in stars are circumferentially opened up on the seal face of ring；It is suitable for various compressors, expanding machine, pump,
The axle end sealing device of the rotating machinery shafts such as reaction kettle, mixer belongs to the rotation axis seal technical field in Fluid Sealing.
Background technology
Mechanical seal is a kind of first to the preload of dynamic and static ring end face seal pair and pressure medium and elasticity by elastic element
The compression of part pressure and reach the axial end face sealing device of sealing, therefore also known as end face seal.Mechanical seal is widely applied
In in the equipment such as centrifugal pump, centrifuge, reaction kettle and compressor.With the continuous progress of science and technology, required in practical application
Mechanical seal is adapted under the conditions of the extreme operating conditions such as high pressure, high speed, and higher want thus is proposed to the performance of mechanical seal
It asks.
At present, domestic and international experts and scholars mainly surround following several respects to the research of mechanical seal：Leakage rate is low, friction
Small, service life length, reliable operation etc. expansion is worn, and achieves good effect.It is wherein most widely used at present
Mechanical seal type groove it is many for helicla flute and its mechanical seal structure of derivative type groove report.For example, European patent
EP0470406A1, EP0564152A1, United States Patent (USP) US5090712, US644696, US7775528, Chinese patent
200910153312.5,01102213.2,201310059819.0 etc..But these type groove mechanical seal structures are still deposited
Start and stop characteristic is bad under low speed low pressure or low speed heavy pressure operating mode, and gas film stiffness is not big enough, and face opening ability does not adapt to wider
Opereating specification the problems such as, mechanical seal is caused to occur being difficult to quickly open in use, low speed operation stability is bad,
Seal face easily leads to the problem of dry friction, it is difficult to meet the fortune of mechanical seal under the conditions of the contour parameter Operating Condition of high pressure, high speed
Row requirement.
The content of the invention
(1) purpose
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of mechanical seal knots of imitative brambles shape type groove
Structure, it is that a kind of face opening power is big, liquid film stiffness is big, disturbance rejection receives performance by force and the preferable novel mechanical of start and stop characteristic is close
Seal structure.It is insufficient at work that this mechanical seal structure can efficiently solve existing mechanical seal structure, and it is close to improve machinery
Sealing property.
(2) technical solution
The rotating ring and stationary ring (as shown in Figure 1) of existing mechanical seal structure are all a cylinders, by rear end face, cylinder
The compositions such as face, front end face.Front end face is generally as sealing surface.The rotating ring and stationary ring of the mechanical seal, as shown in fig. 6,
The one side of the end face of the rotating ring and stationary ring is high-pressure side, that is, upstream, and the opposite side of the end face of the rotating ring and stationary ring is low-pressure side
That is downstream offers on the seal face of at least one ring of the rotating ring or stationary ring and multiple is uniformly distributed circumferentially shape class
It is similar to the hydrodynamic shape type groove of thorn-like.
A kind of mechanical seal structure of imitative brambles shape type groove of the present invention, it is characterised in that：The front end of the mechanical seal structure
Face, that is, sealing surface is made of outer shroud 1, inner ring 2, sealing weir area 3, seals dam area 4 and brambles shape type groove 5, they are all located at the machine
Different position on front end face, that is, sealing surface of tool sealing structure；
The outer shroud 1 is the periphery of the mechanical seal structure sealing surface；
The inner ring 2 is the inner headed face of the mechanical seal structure sealing surface；
The sealing weir area 3 is that the non-slotted area part between two brambles shape type grooves 5 forms sealing weir area；
The seals dam area 4 is that the end (dotted line position in such as Fig. 2) of brambles shape type groove 5 is set between inner ring 2
Smooth torus shape planar section；
The brambles shape type groove 5, is opened on the sealing surface of the mechanical seal structure, because being shaped like in brambles,
So it is called brambles shape type groove；The brambles shape type groove 5 share (6~12) it is a, number with the mechanical seal structure size
And change, each brambles shape type groove 5 is uniformly distributed along the circumferential direction of the mechanical seal structure；
The brambles shape type groove 5, as shown in figure 4, being made of drainage trough 52 and diversion channel 51；Diversion channel 51 is with drainage trough
Both sides are symmetrical centered on 52, and the number of diversion channel 51 is a for (4~10), and diversion channel 51 and drainage trough 52 are along mechanical seal knot
Structure axial depth is 0.5~1.5mm；
As shown in figure 5, the groove width D1 (1~5mm) of drainage trough 52, flute length D2 (15~20mm)；Diversion channel 51 is along drainage
52 both sides of slot are symmetrical；Diversion channel 51 is isosceles triangle, is highly C1 (5~8mm) and the entrance distance C2 of drainage trough 52
(1~3mm), angle B 1 (100 °~110 °), angle B 2 (30 °~40 °)；It is all (1 that interval A1 between diversion channel 51, which is equal to A2,
~5mm), i.e., diversion channel 51 is equidistant, symmetrical；
Entire mechanical seal structure (as shown in Figure 3), outer diameter areInternal diameter isThe axial direction of mechanical seal structure
Thickness is L；Whole blank carries out accurate shape by casting into laser machining brambles shape type groove, seal face is then carried out
Looks processing.
(3) advantage and effect
The beneficial effects of the invention are as follows：(1) imitating brambles shape type groove, circumferentially symmetrical this type groove arrangement was both applicable in
Bidirectional rotation machinery is also applied in single direction rotation machinery；(2) namely sealed because the major trough opening of shape slot is directed towards higher-pressure region
Chamber, so entire type groove have certain hydrostatic pressure effect so that mechanical seal under action of hydrostatic pressure, improve open,
Stop the lubricating status of stage end face, avoid the fretting wear of end face, extend service life；(3) circumferential symmetrical type
Slot will generate high current body dynamic pressure effect due to cavitation effect and pumping effect, and generating big opening force rapidly ensures that end face is opened in time
And micron order fluid film is maintained between end face, be conducive to quick unlatching of the end face under extreme face operating mode, at the same time major trough
The enrichment effect of the sulculus of the right and left is superimposed above-mentioned high current body dynamic pressure effect, and sealing is made to have excellent stability；(4)
Brambles shape type groove can have the accumulation for imitating and only sealing particle in fluid, and the presence in seals dam area can be realized quiet when axis is static
Sealing.(5) it is possible to prevente effectively from small film thickness, small pressure difference extreme operating condition under touch the failure that rubs, realize sealing it is non-contact, carry
High wear resistance extends service life, improves the reliability of sealing.
Description of the drawings
Fig. 1 is existing machinery sealed structural representation.
Fig. 2 is the front view of the imitative brambles shape type groove mechanical seal structure of the present invention.
Fig. 3 is the shaft side figure of brambles shape type groove mechanical seal structure.
Fig. 4 is brambles shape type groove mechanical seal structure partial enlarged view.
Fig. 5 is brambles shape type groove physical dimension figure.
Fig. 6 is the direction of rotation schematic diagram of mechanical seal structure of the present invention.
Fig. 7 is another structure diagram of the embodiment of the present invention.
Sequence number, code name explanation in Fig. 1：
Rear end face, cylindrical surface, front end face (sealing surface)
Sequence number in Fig. 2, code name explanation：
1 is outer shroud, and 2 be inner ring, and 3 be sealing weir area, 4 is seals dam area, 5 is brambles shape type groove.
Sequence number in Fig. 3, code name explanation：
For the outer diameter of entire mechanical seal,For the internal diameter of entire mechanical seal structure, L is mechanical seal structure axis
To thickness.
Sequence number in Fig. 4, code name explanation：
51 be diversion channel, and 52 be drainage trough.
Sequence number in Fig. 5, code name explanation：
A1, A2 are the spacing between each diversion channel, and B1 is the angle of diversion channel stringcourse and drainage trough, and B2 is the top of diversion channel
Angle, C1 are the apex heights of diversion channel, C2 be diversion channel apart from drainage trough entrance length, D1 is the width of drainage trough, and D2 is to draw
The length of chute.
Sequence number in Fig. 6, code name explanation：
High-pressure side (annular seal space), low-pressure side (sealing leak side), direction of rotation (rotation direction of rotation axis).
Specific embodiment：
The present invention is illustrated with reference to the accompanying drawings and detailed description.
The structure of the embodiment of the present invention is as shown in Fig. 1~Fig. 7.Including outer shroud 1, inner ring 2, sealing weir area 3, seals dam area 4,
Brambles shape type groove 5.As shown in Fig. 2, all it is the different position on the front end face (sealing surface) of mechanical seal structure.Entire machine
The outer diameter of tool sealing structure isInternal diameter isThe axial width of mechanical seal structure for L (such as：For 100mm,For
50mm and L is 10mm etc.).Eight 5 its numbers of brambles shape type groove are opened on the front end face (sealing surface) of mechanical seal structure with machinery
The size of sealing structure and change, each brambles shape type groove is circumferentially uniformly distributed along mechanical seal structure.Brambles shape type groove 5, including
Drainage trough 52, diversion channel 51, the wide D1 of drainage trough 52 is 2mm, and long D2 is 16mm；Each diversion channel 51 of homonymy is equally spaced,
For distance A1, A2 all for 3mm, diversion channel 51 is isosceles triangle, and the included angle B 1 of stringcourse and drainage trough 52 is 100 °, apex angle B2 is
20 °, apex height C1 is 7mm and the entrance distance C2 of drainage trough 52 is 2mm.
With reference to Fig. 7, another embodiment of the invention is on the basis of above-described embodiment, and 52 end of drainage trough is passed through
One ring groove connects, so just static pressure open power improve it is more notable, suitable for the occasion of higher duty parameter.
A kind of drainage channel opening of the mechanical seal structure of imitative brambles shape type groove of the present invention is namely sealed towards high-pressure side
Chamber, so that high pressure side liquid can enter seal face under the action of hydrostatic pressure, will be dynamic and static before shaft rotation
Ring separates, to avoid the abrasion of end face seal Ba Qu during rotation.When mechanical seal structure starts rotation, due to depositing for diversion channel
, form apparent hydrodynamic effect, and due to the presence of multiple type grooves, constantly accumulated along direction of rotation Fluid pressure,
Generate enrichment effect；Sealing startup stage can be such that end face faster separates；In shutdown phase it is possible to prevente effectively from end face it is excessive
It rubs and causes the failure of sealing；Simultaneously in the presence of dynamic disturbances, the increase of small film thickness lower face film bearing capacity can be effective
Abrasion caused by ground avoids the contact of end face improves the antijamming capability of sealing.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel conceive the thinkable equivalent technologies mean of institute according to the present invention.
Claims (4)
1. a kind of mechanical seal structure of imitative brambles shape type groove, it is characterised in that：The front end face of the mechanical seal structure seals
Face is made of outer shroud 1, inner ring 2, sealing weir area 3, seals dam area 4 and brambles shape type groove 5, they are all located at the mechanical seal knot
Different position on front end face, that is, sealing surface of structure；
The outer shroud 1 is the periphery of the mechanical seal structure sealing surface；
The inner ring 2 is the inner headed face of the mechanical seal structure sealing surface；
The sealing weir area 3 is that the non-slotted area part between two brambles shape type grooves 5 forms sealing weir area；
The seals dam area 4 is smooth torus shape planar section set between the end of brambles shape type groove 5 and inner ring 2；
The brambles shape type groove 5, is opened on the sealing surface of the mechanical seal structure, because being shaped like in brambles, so
It is called brambles shape type groove；The brambles shape type groove 5 shares 6~12, and number changes with the size of the mechanical seal structure,
Each brambles shape type groove 5 is uniformly distributed along the circumferential direction of the mechanical seal structure；
The brambles shape type groove 5, is made of drainage trough 52 and diversion channel 51；Diversion channel 51 is the both sides pair centered on drainage trough 52
Claim distribution, the number of diversion channel 51 is 4~10, and diversion channel 51 and drainage trough 52 are 0.5 along mechanical seal structure axial depth
~1.5mm；
The groove width of drainage trough 52 is D1, flute length D2；Diversion channel 51 is symmetrical along 52 both sides of drainage trough；Diversion channel 51 is
Lumbar triangle shape, highly the entrance distance for C1 and drainage trough 52 are C2, and angle is B1 and B2；Interval A1 between diversion channel 51 etc.
In A2, i.e. diversion channel 51 is equidistant, symmetrical；
Entire mechanical seal structure, outer diameter areInternal diameter isThe axial width of mechanical seal structure is L；Whole blank
By casting accurate pattern processing is carried out into laser machining brambles shape type groove, seal face is then carried out.
2. a kind of mechanical seal structure of imitative brambles shape type groove according to claim 1, it is characterised in that：
The groove width D1 of the drainage trough 52 is 1~5mm, and flute length D2 is 15~20mm.
3. a kind of mechanical seal structure of imitative brambles shape type groove according to claim 1, it is characterised in that：
The diversion channel 51 of the isosceles triangle, height C1 are 5~8mm；Entrance distance C2 with drainage trough 52 is 1~3mm；
Its angle B 1 is 100 °~110 °, and B2 is 30 °~40 °；Interval A1 and A2 between diversion channel 51 are 1~5mm.
4. a kind of mechanical seal structure of imitative brambles shape type groove according to claim 1, it is characterised in that：
Entire mechanical seal structure, outer diameterFor 100mm, internal diameterAxial width L for 50mm, mechanical seal structure is
10mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172895.7A CN108050258B (en) | 2017-11-22 | 2017-11-22 | A kind of mechanical seal structure of imitative brambles shape type groove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172895.7A CN108050258B (en) | 2017-11-22 | 2017-11-22 | A kind of mechanical seal structure of imitative brambles shape type groove |
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| CN108050258A true CN108050258A (en) | 2018-05-18 |
| CN108050258B CN108050258B (en) | 2019-06-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237041A (en) * | 2018-11-12 | 2019-01-18 | 沈阳北碳密封有限公司 | A kind of mechanically-sealing apparatus for high temperature easy vaporized medium |
| CN109538762A (en) * | 2019-01-14 | 2019-03-29 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanical seal structure |
| CN110578801A (en) * | 2019-09-29 | 2019-12-17 | 西安石油大学 | Anchor-shaped dry gas sealing device |
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| US5222743A (en) * | 1991-02-15 | 1993-06-29 | John Crane (Uk) Limited | Mechanical face seal with trapezoidal shaped grooves on a sealing face |
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| US6726213B2 (en) * | 2001-01-18 | 2004-04-27 | Yuming Wang | Bi-direction rotatable face seal with spiral grooves |
| CN101469771A (en) * | 2007-12-26 | 2009-07-01 | 丹东克隆集团有限责任公司 | Bidirectionally rotary cascade arc groove mechanical sealing end-face |
| CN103104707B (en) * | 2013-01-30 | 2015-10-28 | 浙江工业大学 | Like mushroom-shaped groove bidirectional rotation Hydrodynamic pressure type mechanical seal structure |
| CN106015571A (en) * | 2016-06-20 | 2016-10-12 | 昆明理工大学 | Mechanical seal ring with maple-leaf-like grooves |
| CN206206599U (en) * | 2016-11-29 | 2017-05-31 | 淮海工学院 | A kind of bidirectional rotation auxiliary start stop mode can the tree-like groove end face seal structure of resorption type |
| CN107218396A (en) * | 2017-06-07 | 2017-09-29 | 北京航空航天大学 | A kind of end face carries the mechanical seal structure of vein shape shape groove |
-
2017
- 2017-11-22 CN CN201711172895.7A patent/CN108050258B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222743A (en) * | 1991-02-15 | 1993-06-29 | John Crane (Uk) Limited | Mechanical face seal with trapezoidal shaped grooves on a sealing face |
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| US6726213B2 (en) * | 2001-01-18 | 2004-04-27 | Yuming Wang | Bi-direction rotatable face seal with spiral grooves |
| CN101469771A (en) * | 2007-12-26 | 2009-07-01 | 丹东克隆集团有限责任公司 | Bidirectionally rotary cascade arc groove mechanical sealing end-face |
| CN103104707B (en) * | 2013-01-30 | 2015-10-28 | 浙江工业大学 | Like mushroom-shaped groove bidirectional rotation Hydrodynamic pressure type mechanical seal structure |
| CN106015571A (en) * | 2016-06-20 | 2016-10-12 | 昆明理工大学 | Mechanical seal ring with maple-leaf-like grooves |
| CN206206599U (en) * | 2016-11-29 | 2017-05-31 | 淮海工学院 | A kind of bidirectional rotation auxiliary start stop mode can the tree-like groove end face seal structure of resorption type |
| CN107218396A (en) * | 2017-06-07 | 2017-09-29 | 北京航空航天大学 | A kind of end face carries the mechanical seal structure of vein shape shape groove |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237041A (en) * | 2018-11-12 | 2019-01-18 | 沈阳北碳密封有限公司 | A kind of mechanically-sealing apparatus for high temperature easy vaporized medium |
| CN109538762A (en) * | 2019-01-14 | 2019-03-29 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanical seal structure |
| CN110578801A (en) * | 2019-09-29 | 2019-12-17 | 西安石油大学 | Anchor-shaped dry gas sealing device |
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| CN108050258B (en) | 2019-06-07 |
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