CN205896182U - Static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure - Google Patents
Static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure Download PDFInfo
- Publication number
- CN205896182U CN205896182U CN201620800534.7U CN201620800534U CN205896182U CN 205896182 U CN205896182 U CN 205896182U CN 201620800534 U CN201620800534 U CN 201620800534U CN 205896182 U CN205896182 U CN 205896182U
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- bulge
- seal face
- column
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- face
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Abstract
The utility model provides a static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure, includes mechanical seal's rotating ring and quiet ring, has a seal face on rotating ring and the quiet ring at least, the seal face upstream side be equipped with column dimpling body texture 5, the downstream side of seal face be equipped with annular sealing dam 4, sealing dam's terminal surface is smooth surface, column dimpling body texture 5 goes up to distribute equidistantly has crest 1 and trough 2, crest 1 be located the diameter of seal face, trough 2 extend to the high -pressure side of the seal face at the upper reaches from the annular sealing dam 4 in low reaches, widen and deepening gradually, the shape of trough 2 is conical surfaces.
Description
Technical field
This utility model is related to a kind of sealing structure of shaft end of rotary type fluid machine, particularly to a kind of sound die mould post
Shape micro-bulge waviness is distributed mechanical seal structure it is adaptable to contain the high temperature liquid medium rotating machinery of a certain amount of solid abrasive
Shaft end seal.
Background technology
Mechanical seal is the critical component preventing the leakage of rotary machine axle head, with its low leakage, low-power consumption, long-life etc.
Significantly performance advantage obtains in fields such as oil, petrochemical industry, chemical industry, pharmacy and electric power and extensively applies.Fast with above-mentioned industry
Speed development is it is desirable to mechanical seal to high parameter, integrated and intelligent development and can adapt to environment variation.But it is just general
Logical hydrodynamic lubrication mechanical seal include existing waviness end surface mechanical sealing, upstream pumping mechanical seal and microporous end surface sealing and
Speech, under sealing start and stop stage and low-speed run state, rotating ring and stationary ring easily come in contact fretting wear, so that end face is produced
Raw heavy wear, and dynamic and static ring frictional heat produced by slip relatively will cause face deformation, so to seal request frequency
Numerous start and stop, running speed be relatively low and High Temperature High Pressure operation operating mode in the case of, should not be close using common fluid lubrication machinery
Envelope: under high temperature and high pressure environment, common fluid lubrication mechanical seal easily occurs face deformation thus breakseal is stable
Property, increase leakage rate, even result in the generation of fault.Equally, standard machinery sealing is also difficult to contain solid be applied to medium
The operating mode of granule, solid particle enters the effect that seal face plays grinding agent, makes sealing occur fierce abrasion to lose efficacy.
Content of the invention
This utility model will overcome seal face in prior art easily to occur under start and stop stage and low-speed run state
Friction and wear failure, at high temperature under high pressure fluctuation of service, it is difficult to be applied to the deficiency of the environment containing solid particle, provide one
Plant sound die mould column micro-bulge waviness distribution mechanical seal structure.Sound die mould compared with common fluid lubrication mechanical seal
The distribution mechanical seal of column micro-bulge waviness has the advantage that fluid dynamic and static pressure effect is strong, has good start and stop characteristic, work
When making, frictional heat is little, and heat dissipation characteristics are good, and the ability containing solid particle medium for the adaptation is strong etc..
A kind of sound die mould column micro-bulge waviness is distributed mechanical seal structure, the rotating ring including mechanical seal and stationary ring,
It is characterized in that: at least one seal face on rotating ring and stationary ring, described seal face upstream side is provided with column micro-bulge
Texture 5, the downstream of described seal face is provided with ring packing dam 4, and the end face of described seals dam is smooth surface；Column is micro-
Crest 1 and trough 2 are equally spacedly distributed with convex body texture 5, described crest 1 is located at seal face diametrically, described
Trough 2 extends from the high-pressure side of the upstream seal face in ring packing dam 4 in downstream, gradually broadens and deepens, the shape of trough 2
Shape is the conical surface.
The height of described column micro-bulge is 0.6～3mm, and highest is 2.5～20 μm with the difference of both height minimum；Column
The ratio of height to diameter of micro-bulge is 3～30.
Described column micro-bulge texture centre-to-centre spacing is relevant with seal face two ends pressure reduction δ p size, as δ p≤0.1mpa
100～200 μm of value, 1～50 μm of the value as 0.1mpa ＜ δ p≤1.0mpa, value 0～0.1 μ as δ p ＞ 1.0mpa
M, and value is less when pressure reduction δ p is higher.
The height on described ring packing dam is equal to the height of column micro-bulge texture.
The wave number of described three-dimensional waviness pattern is 2～30, and the height of trough and its neighbouring column micro-bulge is in radially
Linear convergence taper；The cross sectional shape of described column micro-bulge texture can be circle, ellipse, hexagon, triangle or pros
Shape；Between described column micro-bulge texture centre-to-centre spacing radially from end face high-pressure side to low-pressure side be in be gradually increased become
Gesture is distributed.
Operation principle of the present utility model is:
When seal operation, fluid media (medium) enters seal face at the larger trough column micro-bulge in gap, radially
In the presence of pressure reduction stream, from the flowing of seal face upstream toward downstream, the height due to column micro-bulge is radially linearly restrained
Taper, end clearance is gradually reduced, thus forming stronger hydrostatic pressure effect, can achieve the noncontact fortune in sealing start and stop stage
OK, it is to avoid be sealed in the directly contact abrasion of start and stop stage generation seal face；Circumferential shear flow effect under, sealing fluid from
At trough column micro-bulge at crest column micro-bulge flow, due to column micro-bulge height from trough to crest side gradually
Becoming big, namely end clearance is gradually reduced, thus contributing to sealing to form significant hydrodynamic effect, realizing being sealed in little pressure
Noncontact stable operation under the conditions of difference it can be seen that, the mechanical seal of this column micro-bulge texture waviness distribution is a kind of
Typical fluid sound die mould mechanical seal.It is provided with ring packing dam in the downstream of seal face, and the height of seals dam is big
In or be equal to column micro-bulge texture height, thus realizing stop seal, and can prevent through column micro-bulge pulverize solid
Granule enters downstream.The small seepage flow produced by microgap existing between column micro-bulge, not only act as timely lubrication end face,
Reduce the effect of friction skill, and end-face friction heat and face deformation can be reduced.
Column micro-bulge texture on seal face is to process using liga technology to obtain, on the one hand, these are radially bored
The column micro-bulge texture of shape distribution and circumferentially waviness distribution has stronger pulverizing to the solid particle entering seal face
Effect, and the minute solid particles after pulverizing fall in the space between columnar micro-bulge, in being total to of centrifugal force and air-flow
Seal face can be discharged in time under same-action；On the other hand, the column dimpling physical ability of interval reasonable Arrangement plays strengthening end face and dissipates
The effect of heat, because frictional heat produced by seal face and fluid shearing heat energy pass through the gap between columnar micro-bulge
Shed in time, thus effectively reducing seal face temperature rise, improving seal operation reliability, making sealing adapt to wider array of operative employee
Condition.
The beneficial effects of the utility model are:
(1) the column micro-bulge texture of seal face highly assumes the distribution of three-dimensional waviness, convergence taper wherein radially
Column micro-bulge can produce notable hydrostatic effects, can achieve the contactless state being sealed in the start and stop stage, thus improving sealing
Start and stop characteristic；Waviness distribution column micro-bulge circumferentially can produce hydrodynamic effect, thus realizing being sealed in small pressure difference bar
Noncontact stable operation under part.
(2) contained consolidating in the high column micro-bulge texture one side fluid medium such as non-of seal face upstream side processing
Body granule medium has stronger pulverization, and particulate solids can from the gap between columnar micro-bulge in time
Discharge, thus improve sealing adapting to containing solid granule medium occasion；On the other hand, the gap between columnar micro-bulge contributes to
In time the frictional heat of seal face and sticky shearing heat being shed in time, thus reducing seal face temperature rise, improving seal operation
Reliability.
(3) the column micro-bulge structural parameters such as distribution density, the ratio of height to diameter of appropriate design column micro-bulge texture are passed through, with
And waviness structural parameters, achievable column micro-bulge texture and the three-dimensional waviness such as the wave number of three-dimensional waviness pattern, wave height and pitch of waves
The synergism of pattern, thus producing higher fluid dynamic and static pressure effect, realizing sealing noncontact operationally and running, significantly
Improve sealing reliability, increase the service life.
Brief description
Fig. 1 is the real end face structure schematic diagram of this utility model.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the sectional view of Fig. 1.
Fig. 4 is column micro-bulge schematic shapes of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and example is described in detail to this utility model.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4,
A kind of sound die mould column micro-bulge waviness is distributed mechanical seal structure, the rotating ring including mechanical seal and stationary ring,
It is characterized in that: at least one seal face on rotating ring and stationary ring, described seal face upstream side is provided with column micro-bulge
Texture 5, the downstream of described seal face is provided with ring packing dam 4, and the end face of described seals dam is smooth surface；Column is micro-
Crest 1 and trough 2 are equally spacedly distributed with convex body texture 5, described crest 1 is located at seal face diametrically, described
Trough 2 extends from the high-pressure side of the upstream seal face in ring packing dam 4 in downstream, gradually broadens and deepens, the shape of trough 2
Shape is the conical surface.
The height of described column micro-bulge is 0.6～3mm, and highest is 2.5～20 μm with the difference of both height minimum；Column
The ratio of height to diameter of micro-bulge is 3～30.
Centre-to-centre spacing between described column micro-bulge texture is relevant with seal face two ends pressure reduction δ p size, when δ p≤
100～200 μm of value during 0.1mpa, 1～50 μm of the value as 0.1mpa ＜ δ p≤1.0mpa, the value as δ p ＞ 1.0mpa
0～0.1 μm, and value is less when pressure reduction δ p is higher.
The height on described ring packing dam 4 is equal to the height of column micro-bulge texture 5.
The cross sectional shape of described column micro-bulge texture can be circular 6, ellipse, hexagon 7, triangle 9 or square
8.
Content described in this specification embodiment is only enumerating of the way of realization to utility model design, and this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model also and
In those skilled in the art according to this utility model design it is conceivable that equivalent technologies mean.
Claims (4)
1. a kind of sound die mould column micro-bulge waviness is distributed mechanical seal structure, the rotating ring including mechanical seal and stationary ring, its
It is characterised by: at least one seal face on rotating ring and stationary ring, described seal face upstream side is provided with column micro-bulge and knits
Structure (5), the downstream of described seal face is provided with ring packing dam (4), and the end face of described seals dam is smooth surface；Column
Crest (1) and trough (2) are equally spacedly distributed with micro-bulge texture (5), described crest (1) is located at the diameter of seal face
On, described trough (2) extends from the high-pressure side of the upstream seal face in ring packing dam (4) in downstream, gradually broadens simultaneously
Deepen, the shape of trough (2) is the conical surface.
2. sealing structure according to claim 1 it is characterised in that: the height of described column micro-bulge be 0.6～3mm,
Highest is 2.5～20 μm with the difference of both height minimum；The ratio of height to diameter of column micro-bulge is 3～30.
3. sealing structure according to claim 2 it is characterised in that: the centre-to-centre spacing of described column micro-bulge texture and sealing
End face two ends pressure reduction δ p size is relevant, 100～200 μm of the value as δ p≤0.1mpa, as 0.1mpa ＜ δ p≤1.0mpa
1～50 μm of value, 0～0.1 μm of the value as δ p ＞ 1.0mpa, and value is less when pressure reduction δ p is higher.
4. sealing structure according to claim 3 it is characterised in that: the height on described ring packing dam be equal to column dimpling
The maximum height of body texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800534.7U CN205896182U (en) | 2016-07-27 | 2016-07-27 | Static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620800534.7U CN205896182U (en) | 2016-07-27 | 2016-07-27 | Static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896182U true CN205896182U (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620800534.7U Withdrawn - After Issue CN205896182U (en) | 2016-07-27 | 2016-07-27 | Static and dynamic pressure type column dimpling bulk wave degree distribution mechanical seal structure |
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|---|---|
| CN (1) | CN205896182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015580A (en) * | 2016-07-27 | 2016-10-12 | 浙江工业大学 | Dynamic and static pressure type columnar micro-bulge waviness distribution mechanical seal structure |
-
2016
- 2016-07-27 CN CN201620800534.7U patent/CN205896182U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015580A (en) * | 2016-07-27 | 2016-10-12 | 浙江工业大学 | Dynamic and static pressure type columnar micro-bulge waviness distribution mechanical seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20190727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20200821 |
|
| AV01 | Patent right actively abandoned |