CN205877199U - Mechanical seal ring with semiellipse rectangle combination cell type - Google Patents
Mechanical seal ring with semiellipse rectangle combination cell type Download PDFInfo
- Publication number
- CN205877199U CN205877199U CN201620597794.9U CN201620597794U CN205877199U CN 205877199 U CN205877199 U CN 205877199U CN 201620597794 U CN201620597794 U CN 201620597794U CN 205877199 U CN205877199 U CN 205877199U
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- China
- Prior art keywords
- groove
- mechanical seal
- seal ring
- sealing ring
- semiellipse
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 abstract description 7
- 239000012141 concentrate Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 7
- 230000002457 bidirectional effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model relates to a mechanical seal ring with semiellipse rectangle combination cell type, its technical field scope is the fluid tight technique. In terminal surface circumference evenly distributed 3~20 grooves of sealing ring, be the rectangle in the middle of every groove, both ends are semiellipse shape, for axial symmetry in radial, when the external diameter of high -pressure side at the sealing ring, groove opening in sealing ring external diameter edge, when the internal diameter of high -pressure side at the sealing ring, groove opening in sealing ring internal diameter edge. Mechanical seal ring can reduce the cell type processing degree of difficulty of two -way chute, and it needs one -way or two -way rotating fluid machinery to be applicable to. Structural closed angle part has been avoided to the cell type structure to reduce stress concentrates, reduces sealed face wearing and tearing, extension sealing member life.
Description
Technical field
This utility model relates to a kind of mechanical seal ring with semiellipse-rectangle combination grooved, belongs to rotary shaft machinery
Field of sealing technology.
Background technology
Helicla flute is the groove of current most widely used non-contact mechanical seal, but at home and abroad has and repeatedly occur
Compressor reverse rotation phenomenon, causes seal failure, commercial production causes bigger harm so that people focus more on bidirectional rotary
The research of rotatable non-contacting mechanical seal.Bidirectional rotation mechanical seal ring is due to the symmetrical configuration of grooved, it is possible to achieve rotating,
And sufficiently large opening force can be produced and make both ends of the surface separately, it is to avoid single direction rotation is made when opening in sealing, stop or invert
Seal face abrasion is become to cause seal failure.Bidirectional rotary type non-contacting mechanical seal mainly has at present: T-slot machinery is close
Envelope, cascade arc groove mechanical sealing, U-type groove mechanical seal etc..This three classes non-contact mechanical seal is respectively provided with certain dynamic pressure effect
With rotating ability to work, but these sealing rings exist that fluid film rigidity is relatively low, dynamic pressure effect is poor at present, seal dress
How the problem that the precision joined is inadequate, go to solve the hot issue that these problems become current.
Summary of the invention
For avoiding the shortcoming of above-mentioned bidirectional rotation mechanical seal ring, especially sealing property is in the sealing of low pressure low speed
Can be inconspicuous with dynamic pressure effect, this utility model provides a kind of mechanical seal ring with semiellipse-rectangle combination grooved.
The technical solution adopted in the utility model is:
Being uniformly distributed in the middle of 3 ~ 20 grooves 2, each groove 2 in sealing ring 1 end face circumference is rectangle, and two ends are half elliptic,
For radial direction formed symmetrical；When high-pressure side is at the external diameter of sealing ring 1, groove 2 is opened on sealing ring 1 radial outer edge；When high-pressure side exists
During the internal diameter of sealing ring 1, groove 2 is opened on sealing ring 1 inner diameter edge.
Circumferential lengths W of the rectangle part of groove 21It is 3 ~ 9mm, W1Circumferential lengths with any one semiellipse part of groove 2
W2Ratio be 1 ~ 4, W2With radical length L1Ratio be 1 ~ 4.
The degree of depth of groove 2 is 2 ~ 200 μm, most preferably 2 ~ 10 μm.
The semiellipse part groove depth constant (flat-bottom slot) of groove 2, or deepen (wedged bottom from low-pressure side to high-pressure side radial alignment
Groove), or circumferentially tilt (wedged bottom groove).
The rectangle part groove depth of groove 2 is constant (flat-bottom slot), or deepens (wedged bottom groove) from low-pressure side to high-pressure side radial alignment,
Or circumferentially tilt (wedged bottom groove).
Operation principle of the present utility model is: when mechanical seal ring is in stable operation, and the fluid sealed enters in groove,
Seal dam, the throttling action on sealing weir due to what unslotted part on sealing ring was constituted, cause entering the fluid pressure liter in groove
Height, under the promotion of this pressure, rotating ring is separated with stationary ring, forms one layer of the thinnest fluid film (air film or liquid film), so that
Non-contacting seal is formed between seal face.This utility model is applicable to the shaft end seal of the rotating machineries such as various compressor, pump,
The particularly gas film sealing of bidirectional rotation or liquid film seal.
The beneficial effects of the utility model are: this utility model ellipse-rectangle combination grooved mechanical seal ring, it is possible to increase
The aeroperformance, the trench structure that seal simply are prone to processing.And this utility model has the characteristic of bidirectional rotation, no matter just it is
Rotation or counter-rotating all can produce the fluid film of continuous-stable, and the bearing capacity rigidity of thin film is all preferable, due to grooved
Structure avoids the pointed part in structure, thus reduces stress and concentrate, and sealing surface wear reduces, and seal life extends.
Accompanying drawing explanation
Fig. 1 is that channel opening is in the mechanical seal ring structural representation of sealing ring outer radius；
Fig. 2 is that channel opening is in the mechanical seal ring structural representation of sealing ring inner radius；
Fig. 3 is Fig. 1 close-up schematic view；
Fig. 4 is that rectangle part/semiellipse part bottom land deepens schematic diagram from low-pressure side to high-pressure side radial alignment；
Fig. 5 is two semiellipse part bottom land peripheral, oblique schematic diagrams；
In figure: 1-sealing ring, 2-groove, 3-bottom land.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the utility model is described in further detail, but content of the present utility model is not
It is limited to described scope.
Embodiment 1
As shown in figures 1 and 3, the end face of sealing ring 1 is distributed uniformly and circumferentially 4 grooves, in the middle of each groove is
Rectangle, two ends are half elliptic, for radial direction formed symmetrical；High-pressure side is at the external diameter of sealing ring 1, and groove 2 is opened on sealing ring 1 external diameter
Edge.Circumferential lengths W of rectangle part1For 3mm, W1Circumferential lengths W with any one semiellipse part2Ratio be 1, W2With
Radical length L1Ratio be 1.Rectangle part and two semiellipse parts are all flat-bottom slots, rectangle part groove depth 10 μm, two and half
Oval part groove depth is 4 μm.
Embodiment 2
As shown in Figure 2, Figure 3 and Figure 4, the end face at sealing ring 1 is distributed uniformly and circumferentially 20 grooves, in the middle of each groove
For rectangle, two ends are half elliptic, for radial direction formed symmetrical；High-pressure side is at sealing ring 1 internal diameter, and groove 2 is opened on sealing ring 1 internal diameter
Edge.Circumferential lengths W of rectangle part1It is 9 mm, W1Circumferential lengths W with any one semiellipse part2Ratio be 4, W2With
Radical length L1Ratio be 4.Rectangle part is flat-bottom slot, groove depth 200 μm, and two semiellipse part groove depths are all from low-pressure side to height
Pressure side radial alignment deepens (wedged bottom groove), and groove depth deepens to 200 μm from 100 μm.
Embodiment 3
Shown in as shown in Figure 1, Figure 3 and Figure 4, being uniformly distributed in the middle of 3 grooves, each groove in sealing ring 1 end face circumference is rectangle, two
End is half elliptic, for radial direction formed symmetrical；High-pressure side is at sealing ring 1 external diameter, and groove 2 is opened on sealing ring 1 radial outer edge.Rectangle
Circumferential lengths W of part1For 5mm, W1Circumferential lengths W with any one semiellipse part2Ratio be 2, W2With radical length L1
Ratio be 3.Rectangle part groove depth deepens (wedged bottom groove) from low-pressure side to high-pressure side radial alignment, and groove depth deepens to 20 μm from 2 μm,
Two semiellipse parts are flat-bottom slot, groove depth 2 μm.
Embodiment 4
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, being uniformly distributed in the middle of 16 grooves, each groove in sealing ring 1 end face circumference is square
Shape, two ends are half elliptic, for radial direction formed symmetrical；High-pressure side is at sealing ring 1 internal diameter, and groove 2 is opened on sealing ring 1 internal diameter limit
Edge.Circumferential lengths W of rectangle part1For 4mm, W1Circumferential lengths W with any one semiellipse part2Ratio be 2, W2With footpath
To length L1Ratio be 2.Rectangle part groove depth deepens (wedged bottom groove) from low-pressure side to high-pressure side radial alignment, and groove depth becomes from 2 μm
Being deep to 20 μm, one of them semiellipse part bottom land tilts (wedged bottom groove) the most in the direction of the clock, another semiellipse portion
Dividing bottom land to tilt (wedged bottom groove) the most counterclockwise, groove depth is deepened to 20 μm by 2 μm.
Embodiment 5
Shown in as shown in Figure 1, Figure 3 and Figure 4, being uniformly distributed in the middle of 8 grooves, each groove in sealing ring 1 end face circumference is rectangle, two
End is half elliptic, for radial direction formed symmetrical；High-pressure side is at sealing ring 1 external diameter, and groove 2 is opened on sealing ring 1 radial outer edge.Rectangle
Circumferential lengths W of part1For 8mm, W1Circumferential lengths W with any one semiellipse part2Ratio be 3, W2With radical length L1
Ratio be 2.Rectangular channel bottom land tilts (wedged bottom groove) the most in the direction of the clock, and two semiellipse part groove depths are all from low-pressure side
(wedged bottom groove) is deepened to high-pressure side radial alignment.
Embodiment 6
As shown in Figure 1, Figure 3, being uniformly distributed in the middle of 10 grooves, each groove in sealing ring 1 end face circumference is rectangle, and two ends are
Half elliptic, for radial direction formed symmetrical；High-pressure side is at sealing ring 1 external diameter, and groove 2 is opened on sealing ring 1 radial outer edge.Rectangle part
Circumferential lengths W1It is 6, W1Circumferential lengths W with any one semiellipse part2Ratio be 4, W2With radical length L1Ratio be
3.Rectangular channel bottom land tilts (wedged bottom groove) the most counterclockwise, and two semiellipse part bottom lands are the most circumferentially by clockwise
Direction tilts (wedged bottom groove).
Claims (12)
1. there is a mechanical seal ring for semiellipse-rectangle combination grooved, it is characterized in that, in sealing ring (1) end face circumference all
The multiple groove of even distribution (2), is rectangle in the middle of each groove (2), and two ends are half elliptic, for radial direction formed symmetrical；When high-pressure side exists
During the external diameter of sealing ring (1), groove (2) is opened on sealing ring (1) radial outer edge；When high-pressure side is at the internal diameter of sealing ring (1), groove
(2) sealing ring (1) inner diameter edge it is opened on.
Mechanical seal ring the most according to claim 1, is characterized in that, the quantity of groove (2) is 3 ~ 20.
Mechanical seal ring the most according to claim 1, is characterized in that, circumferential lengths W of the rectangle part of groove (2)1Be 3 ~
9mm, W1Circumferential lengths W with any one semiellipse part of groove (2)2Ratio be 1 ~ 4.
Mechanical seal ring the most according to claim 1, is characterized in that, the circumference of any one semiellipse part of groove (2)
Length W2With radical length L1Ratio be 1 ~ 4.
Mechanical seal ring the most according to claim 1, is characterized in that, the degree of depth of groove (2) is 2 ~ 200 μm.
Mechanical seal ring the most according to claim 5, is characterized in that, the degree of depth of groove (2) is 2 ~ 10 μm.
7. according to the mechanical seal ring described in claim 1 to 6 any one, it is characterized in that, the semiellipse part groove depth of groove (2)
Constant.
8. according to the mechanical seal ring described in claim 1 to 6 any one, it is characterized in that, the semiellipse part groove depth of groove (2)
Deepen to high-pressure side radial alignment from low-pressure side.
9. according to the mechanical seal ring described in claim 1 to 6 any one, it is characterized in that, the semiellipse part bottom land of groove (2)
Circumferentially tilt.
10. according to the mechanical seal ring described in claim 1 to 6 any one, it is characterized in that, the rectangle part groove depth of groove (2)
Constant.
11., according to the mechanical seal ring described in claim 1 to 6 any one, is characterized in that, the rectangle part groove depth of groove (2)
Deepen to high-pressure side radial alignment from low-pressure side.
12., according to the mechanical seal ring described in claim 1 to 6 any one, is characterized in that, the rectangle part bottom land of groove (2)
Circumferentially tilt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597794.9U CN205877199U (en) | 2016-06-20 | 2016-06-20 | Mechanical seal ring with semiellipse rectangle combination cell type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597794.9U CN205877199U (en) | 2016-06-20 | 2016-06-20 | Mechanical seal ring with semiellipse rectangle combination cell type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877199U true CN205877199U (en) | 2017-01-11 |
Family
ID=57691554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620597794.9U Expired - Fee Related CN205877199U (en) | 2016-06-20 | 2016-06-20 | Mechanical seal ring with semiellipse rectangle combination cell type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869749A (en) * | 2018-07-23 | 2018-11-23 | 浙江工业大学 | Open ellipse wire casing end face bidirectional rotation mechanical seal structure |
-
2016
- 2016-06-20 CN CN201620597794.9U patent/CN205877199U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869749A (en) * | 2018-07-23 | 2018-11-23 | 浙江工业大学 | Open ellipse wire casing end face bidirectional rotation mechanical seal structure |
| CN108869749B (en) * | 2018-07-23 | 2024-04-09 | 浙江工业大学 | Bidirectional rotary mechanical sealing structure for end face of open elliptic wire slot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20190620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |