CN107218396A - A kind of end face carries the mechanical seal structure of vein shape shape groove - Google Patents
A kind of end face carries the mechanical seal structure of vein shape shape groove Download PDFInfo
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- CN107218396A CN107218396A CN201710421524.1A CN201710421524A CN107218396A CN 107218396 A CN107218396 A CN 107218396A CN 201710421524 A CN201710421524 A CN 201710421524A CN 107218396 A CN107218396 A CN 107218396A
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- groove
- mechanical 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
- F16J15/3404—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
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
A kind of end face of the present invention carries the mechanical seal structure of vein shape shape groove, its front end face is that sealing surface is made up of outer shroud (1), inner ring (2), sealing weir area (3), seals dam area (4) and vein shape shape groove (5), and they are all located at the diverse location on the front end face of the mechanical seal structure i.e. sealing surface；The vein shape shape groove (5) has 6~12, and its number changes with the size of the mechanical seal structure；The vein shape shape groove (5), is by first groove (51), second groove (52), the 3rd groove (54), the 4th groove (55) and major trough (53) composition；The present invention is effectively improved hydrodynamic effect, reduces the side effect caused by mechanical seal end surface unevenness, improves the task performance of mechanical seal；The failure it is possible to prevente effectively from touching under the extreme operating condition of small thickness, small pressure difference is rubbed, realizes sealed noncontact, improves wear-resistant, extend service life, improve sealed reliability.
Description
Technical field
The present invention provides the mechanical seal structure that a kind of end face carries vein shape shape groove, specifically, is one kind in rotating ring
Or a number of vein shape shape groove, the rotation axis seal technical field belonged in Fluid Sealing are opened up on the end face of stationary ring.
Background technology
Mechanical seal is a kind of dependence flexible member to the secondary pretension of dynamic and static ring end face seal and pressure medium and elasticity member
The compression of part pressure and reach sealed axial end sealing device, therefore also known as end face seal.Mechanical seal is widely applied
In in the equipment such as centrifugal pump, centrifuge, reactor and compressor.With the fast development of industrial circle, required in practical application
Mechanical seal is adapted in high pressure, high speed, the more extreme working condition such as sudden load, and thus the performance to mechanical seal is proposed
Higher requirement.Stable liquid film, the abrasion of end face, sealing ring can not be formed between traditional contacting mechanical seal end face
Hot tearing etc. is all easily caused sealed failure.And current non-contacting seal mainly carries out reshaping on dynamic and static ring end face
(shallow/deep groove type, shallow trench and texture type), these structures improve mechanical sealing performance on certain depth, but also exist
Weak point：Although low for its friction energy-dissipating of shallow/deep groove type, face opening ability is also relatively strong, and leakage rate is more than identical rule
The common end surface mechanical sealing of lattice.The poor-performing of chip removal, preferably causes the accumulation of particle work simultaneously in；Various texture types are all deposited
Fluid thickness is not enough between anti-pressure ability, end face, or all fluid film insufficient rigidity, to resist external interference, causes sealing system not
Normal table is run, and there is also the problem of chip removal ability difference.Accordingly, the sealing structure that designs a mechanism end face configuration, Neng Goutong
When produce hydrostatic pressure, hydrodynamic pressure, reduce seal face contact, can be effectively prevented from sealedly failure, simultaneously
Less end clearance is kept to control leakage rate.
The content of the invention
(1) purpose
In order to overcome the shortcoming of above-mentioned prior art, the present invention provides the mechanical seal that a kind of end face carries vein shape shape groove
Structure, it is that have compared with Small leak amount, shutdown process hydrodynamic effect under a kind of resistance to compression and strong antijamming capability, high parameter
Well, fluid bearings power sufficient mechanical sealing structure during normal operation.Improve mechanical sealing performance.
(2) technical scheme
Existing mechanical seal structure (as shown in Figure 1) is a cylinder：Rear end face, the face of cylinder, front end face are general to make
What it is for sealing surface is front end face.
The present invention is the mechanical seal structure that a kind of end face carries vein shape shape groove, it is characterised in that：The mechanical seal knot
The front end face of structure is that sealing surface is by outer shroud (1), inner ring (2), sealing weir area (3), seals dam area (4) and vein shape shape groove (5)
Composition, they are all located at the diverse location on the front end face of the mechanical seal structure i.e. sealing surface.
Described outer shroud (1), is the periphery of the mechanical seal structure sealing surface；
Described inner ring (2), is the inner headed face of the mechanical seal structure sealing surface；
Described sealing weir area (3), is the part between two vein shape shape grooves (5)；
Described seals dam area (4), be vein shape shape groove (5) end (dotted line position in such as Fig. 2) and inner ring (2) it
Between ring part；
Described vein shape shape groove (5), is opened on the sealing surface of the mechanical seal structure, because being shaped like in leaf
Vein, so being called vein shape shape groove；The vein shape shape groove (5) has 6~12, and its number is with the mechanical seal structure
Size and change, each vein shape shape groove (5) is arranged symmetrically with the axis centre of the mechanical seal structure.
The vein shape shape groove (5), as shown in figure 4, be by first groove (51), second groove (52), the 3rd groove (54),
4th groove (55) and major trough (53) composition；First, second, third and fourth totally four branch grooves (51), (52), (54), (55) are all straight
Groove, its groove width is equal, is 0.5~1.5mm；The major trough (53) is helicla flute, and its helix is log spiral, helicla flute
Inclination angle be 18 °~28 °；Angle between four branch grooves (51), (52), (54), (55) and major trough (53) is 20 °~45 °；
The ratio between four branch grooves (51), (52), (54), the groove width of the groove width of (55) and major trough (53) are 1: 2；Four branch grooves (51), (52),
(54), the groove depth of (55) is identical with the groove depth of major trough (53), and groove depth is 2~6 μm.
As shown in figure 5, the end of first, fourth groove (51), (55) and major trough (53) is small arc-shaped, all in same half
On footpath R1 circle, the R1 center of circle is the center of circle of the mechanical seal structure；Branch groove (52) end and branch groove (54) end are also roundlet
Arc, this two sections of small arc-shapeds are on the circle with Radius R2, and the R2 center of circle is the center of circle of the mechanical seal structure；The R2 justifies and master
The intersection point of groove (53) is the top of branch groove (51) and branch groove (55)；The top of branch groove (52) and branch groove (54) is the circle that radius is R3
With the intersection point of major trough (53), the R3 center of circle is the center of circle of the mechanical seal structure；Second and third branch groove (52), the top of (54)
It is the intersection point of circle and major trough (53) that radius is R3, the R3 center of circle is the center of circle of the mechanical seal structure.
Whole mechanical seal structure (as shown in Figure 3), its internal diameter isExternal diameter isThe axial direction of mechanical seal structure
Thickness is L；Overall blank is formed and then is machined out by casting, and seal face carries out accurate pattern processing.
(3) advantage and effect
The beneficial effects of the invention are as follows：(1) in the case where being strict with the irreversible service condition of rotary shaft, symmetrical vein shape
Shape groove is effectively improved hydrodynamic effect, reduces the side effect caused by mechanical seal end surface unevenness, improves machine
The sealed task performance of tool；(2) i.e. because the major trough opening of shape groove is directed towards higher-pressure region annular seal space, so whole shape groove has
Hydrostatic pressure effect so that mechanical seal is opened under action of hydrostatic pressure under inactive state.(3) entity sealing ring is avoided
Because it is heated it is uneven cause deformation even mechanical seal end surface ftracture the problem of, vein shape shape groove can effectively prevent from sealing fluid
The accumulation of middle particle, the presence in seals dam area 4 can realize static seal when axle is static.(4) it is possible to prevente effectively from small thickness, small
Touching under the extreme operating condition of pressure difference is rubbed failure, is realized sealed noncontact, is improved wear-resistant, extends service life, improve
Sealed reliability.
Brief description of the drawings
Fig. 1 is existing machinery sealed structural representation.
Fig. 2 is the front view of mechanical seal structure of the present invention.
Fig. 3 is the shaft side figure of mechanical seal structure of the present invention.
Fig. 4 is the zoomed-in view of vein shape shape groove.
Fig. 5 is the physical dimension figure of vein shape shape groove.
Fig. 6 is the direction of rotation schematic diagram of mechanical seal structure of the present invention.
Sequence number, code name explanation in Fig. 1：
Rear end face, the face of cylinder, 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 vein shape shape groove.
Sequence number in Fig. 3, code name explanation：
For the internal diameter of whole mechanical seal,For whole mechanical seal structure external diameter, L is mechanical seal structure axial direction
Thickness.
Sequence number in Fig. 4, code name explanation：
51 it is branch groove, 52 be branch groove, 53 be major trough, 54 be branch groove, 55 is branch groove.
Sequence number in Fig. 5, code name explanation：
R1 is the radius of the end of branch groove 51, the end of branch groove 55 and the end circular arc of major trough 53.R2 is the end of branch groove 52 and branch groove
The radius of 54 end circular arcs, the intersection point of the circle and major trough 53 is the top of branch groove 51 and the top of branch groove 55.R3 is with the circle of the radius
The intersection point of arc and major trough 53, the as top of branch groove 52 and the top of branch groove 54.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 rotary shaft).
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. 6.Including outer shroud (1), inner ring (2), sealing weir area (3), sealing
Ba Qu (4), vein shape shape groove (5).As shown in Fig. 2 being all the difference on the front end face (sealing surface) of mechanical seal structure
Position.Entirely the internal diameter of mechanical seal structure isExternal diameter isThe axial width of mechanical seal structure is L.Mechanical seal
It is provided with 8 vein shape shape groove (5) its numbers on the front end face (sealing surface) of structure with the size of mechanical seal structure to change, respectively
Vein shape shape groove is symmetrical with the axis centre of mechanical seal structure.Vein shape shape groove (5) includes first groove (51), second groove
(52), the 3rd groove (54), the 4th groove (55) and major trough (53).First, second, third and fourth totally four branch grooves (51), (52),
(54), (55) are all straight troughs, and its groove width is equal, is 0.6mm；The major trough (53) is helicla flute, and its helix is logarithm spiral shell
Spin line, the inclination angle of helicla flute is 20 °；Angle between four branch grooves (51), (52), (54), (55) and major trough (53) is 20 °
~45 °；The ratio between four branch grooves (51), (52), (54), the groove width of the groove width of (55) and major trough (53) are 1: 2；Four branch grooves
(51), (52), (54), the groove depth of (55) are identical with the groove depth of major trough (53), and groove depth is 5 μm.
The end of first, fourth groove (51), (55) and major trough (53) is small arc-shaped, all in same Radius R1 circle
On, the R1 center of circle is the center of circle of the mechanical seal structure；Branch groove (52) end and branch groove (54) end are also small arc-shaped, this two sections
Small arc-shaped is on the circle with Radius R2, and the R2 center of circle is the center of circle of the mechanical seal structure；The R2 justifies and major trough (53)
Intersection point is the top of branch groove (51) and branch groove (55)；The top of branch groove (52) and branch groove (54) is the circle and major trough that radius is R3
(53) intersection point, the R3 center of circle is the center of circle of the mechanical seal structure；Second and third branch groove (52), the top of (54) are radiuses
For the intersection point of R3 circle and major trough (53), the R3 center of circle is the center of circle of the mechanical seal structure.
A kind of major trough opening of mechanical seal structure of the end face of the present invention with vein shape shape groove towards high-pressure side namely
Annular seal space, so that high pressure side liquid can enter seal face in the presence of hydrostatic pressure, will before rotating shaft rotation
Dynamic and static ring is separated, to avoid the abrasion of end face seal Ba Qu during rotation.When mechanical seal structure starts rotation, due to branch groove
Presence, form obvious hydrodynamic effect, and due to the symmetry of shape groove, constantly tire out along direction of rotation Fluid pressure
Product, produces enrichment effect；Sealing startup stage can be such that end face faster separates；In shutdown phase it is possible to prevente effectively from the mistake of end face
Degree rubs and causes sealed failure；Simultaneously in the presence of dynamic disturbances, the increase of small thickness lower surface film bearing capacity can have
Avoid to effect wearing and tearing caused by the contact of end face, improve sealed antijamming capability.In the normal operation of sealing, mechanical seal
Direction of rotation shown in structure along Fig. 6 is rotated, and its four branch grooves are to form dynamic pressure effect, particularly the 3rd groove (54), the 4th
Branch groove (55), major trough (53) serves discharge because of the particle of abrasion generation and forms the effect outwards thrown away as liquid.Exist simultaneously
The problems such as during normal operation by the opening force, the insufficient rigidity that overcome tradition machinery sealing presence, it is effectively improved sealing operation
Stability.
Claims (5)
1. a kind of end face carries the mechanical seal structure of vein shape shape groove, it is characterised in that：It is characterized in that：The mechanical seal knot
The front end face of structure is that sealing surface is by outer shroud (1), inner ring (2), sealing weir area (3), seals dam area (4) and vein shape shape groove (5)
Composition, they are all located at the diverse location on the front end face of the mechanical seal structure i.e. sealing surface；
Described outer shroud (1), is the periphery of the mechanical seal structure sealing surface；
Described inner ring (2), is the inner headed face of the mechanical seal structure sealing surface；
Described sealing weir area (3), is the part between two vein shape shape grooves (5)；
Described seals dam area (4), is the ring part between the end of vein shape shape groove (5) and inner ring (2)；
Described vein shape shape groove (5), is opened on the sealing surface of the mechanical seal structure；The vein shape shape groove (5) has 6~
12, its number changes with the size of the mechanical seal structure；Each vein shape shape groove (5) is with the axle of the mechanical seal structure
Line is centrosymmetrically arranged；
The vein shape shape groove (5) be by first groove (51), second groove (52), the 3rd groove (54), the 4th groove (55) and
Major trough (53) is constituted；First groove (51), second groove (52), the 3rd groove (54) and the 4th groove (55) are all straight trough, groove
Width is equal；The major trough (53) is helicla flute；First groove (51), second groove (52), the 3rd groove (54) and the 4th
Angle between branch groove (55) and major trough (53) is 20 °~45 °；First groove (51), second groove (52), the 3rd groove (54)
And the ratio between the groove width of the 4th groove (55) and the groove width of major trough (53) are 1: 2；First groove (51), second groove (52), the 3rd
The groove depth of branch groove (54) and the 4th groove (55) is identical with the groove depth of major trough (53)；
The end of first groove (51), the 4th groove (55) and major trough (53) is small arc-shaped, all in same Radius R1 circle
On, the R1 center of circle is the center of circle of the mechanical seal structure；Second groove (52) end and the 3rd groove (54) end are also roundlet
Arc, this two sections of small arc-shapeds are on the circle with Radius R2, and the R2 center of circle is the center of circle of the mechanical seal structure；The R2 justifies and master
The intersection point of groove (53) is the top of first groove (51) and the 4th groove (55)；Second groove (52) and the beginning of the 3rd groove (54)
End is the intersection point of circle and major trough (53) that radius is R3, and the R3 center of circle is the center of circle of the mechanical seal structure；Second groove
(52) and the 3rd groove (54) top be circle and major trough (53) that radius is R3 intersection point, the R3 center of circle is the mechanical seal knot
The center of circle of structure；
Whole mechanical seal structure, its internal diameter isExternal diameter isThe axial width of mechanical seal structure is L.
2. a kind of end face according to claim 1 carries the mechanical seal structure of vein shape shape groove, it is characterised in that：The machine
Tool sealing structure, its overall blank is formed and then is machined out by casting, and seal face carries out accurate pattern processing.
3. a kind of end face according to claim 1 carries the mechanical seal structure of vein shape shape groove, it is characterised in that：For spiral shell
The major trough (53) of spin slot, its helix is log spiral, and the inclination angle of helicla flute is 18 °~28 °.
4. a kind of end face according to claim 1 carries the mechanical seal structure of vein shape shape groove, it is characterised in that：This
One groove (51), second groove (52), the 3rd groove (54), the groove depth of the 4th groove (55) and major trough (53) are 2~6 μm.
5. a kind of end face according to claim 1 carries the mechanical seal structure of vein shape shape groove, it is characterised in that：This
One groove (51), second groove (52), the 3rd groove (54), the groove width of the 4th groove (55) are 0.5~1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421524.1A CN107218396B (en) | 2017-06-07 | 2017-06-07 | A kind of end face has the mechanical seal structure of vein shape shape slot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421524.1A CN107218396B (en) | 2017-06-07 | 2017-06-07 | A kind of end face has the mechanical seal structure of vein shape shape slot |
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| CN107218396A true CN107218396A (en) | 2017-09-29 |
| CN107218396B CN107218396B (en) | 2019-01-15 |
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| CN201710421524.1A Active CN107218396B (en) | 2017-06-07 | 2017-06-07 | A kind of end face has the mechanical seal structure of vein shape shape slot |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542934A (en) * | 2017-10-31 | 2018-01-05 | 南昌工程学院 | A kind of mechanical seal structure for imitating petal type groove |
| CN108050258A (en) * | 2017-11-22 | 2018-05-18 | 南昌工程学院 | A kind of mechanical seal structure of imitative brambles shape type groove |
| CN108223799A (en) * | 2017-12-26 | 2018-06-29 | 南昌工程学院 | It is a kind of can bidirectional rotation Hydrodynamic pressure type mechanical seal structure |
| CN108916386A (en) * | 2018-08-30 | 2018-11-30 | 大连威尔博合金科技有限公司 | A kind of mechanical seal ring |
| CN110410504A (en) * | 2019-07-15 | 2019-11-05 | 北京航空航天大学 | A kind of mechanical seal end surface structure of varying depth spiral T-slot |
| CN110848392A (en) * | 2019-11-19 | 2020-02-28 | 潍柴动力股份有限公司 | Sealing structure and engine |
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| CN202501012U (en) * | 2012-03-22 | 2012-10-24 | 成都一通密封有限公司 | Bidirectional dry air sealing friction pair |
| CN103791097A (en) * | 2014-02-28 | 2014-05-14 | 江苏大学 | Combination fluid dynamic pressure groove mechanical seal ring capable of automatically discharging particles |
| CN104728451A (en) * | 2015-04-09 | 2015-06-24 | 江西省科学院应用物理研究所 | Directivity large hole and three-dimensional groove combined non-contact type mechanical sealing structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542934A (en) * | 2017-10-31 | 2018-01-05 | 南昌工程学院 | A kind of mechanical seal structure for imitating petal type groove |
| CN108050258A (en) * | 2017-11-22 | 2018-05-18 | 南昌工程学院 | A kind of mechanical seal structure of imitative brambles shape type groove |
| CN108223799A (en) * | 2017-12-26 | 2018-06-29 | 南昌工程学院 | It is a kind of can bidirectional rotation Hydrodynamic pressure type mechanical seal structure |
| CN108223799B (en) * | 2017-12-26 | 2021-03-30 | 南昌工程学院 | Bidirectional rotary fluid dynamic pressure type mechanical sealing structure |
| CN108916386A (en) * | 2018-08-30 | 2018-11-30 | 大连威尔博合金科技有限公司 | A kind of mechanical seal ring |
| CN110410504A (en) * | 2019-07-15 | 2019-11-05 | 北京航空航天大学 | A kind of mechanical seal end surface structure of varying depth spiral T-slot |
| CN110848392A (en) * | 2019-11-19 | 2020-02-28 | 潍柴动力股份有限公司 | Sealing structure and engine |
| CN110848392B (en) * | 2019-11-19 | 2021-11-19 | 潍柴动力股份有限公司 | Sealing structure and engine |
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