CN201547236U - Novel spiral groove mechanical seal with right triangle-shaped axial cross section - Google Patents
Novel spiral groove mechanical seal with right triangle-shaped axial cross section Download PDFInfo
- Publication number
- CN201547236U CN201547236U CN2009202319938U CN200920231993U CN201547236U CN 201547236 U CN201547236 U CN 201547236U CN 2009202319938 U CN2009202319938 U CN 2009202319938U CN 200920231993 U CN200920231993 U CN 200920231993U CN 201547236 U CN201547236 U CN 201547236U
- Authority
- CN
- China
- Prior art keywords
- mechanical seal
- seal
- seal ring
- spiral chute
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model discloses a novel spiral groove mechanical seal with a right triangle-shaped axial cross section, which is characterized in that a rotating seal ring end face of the mechanical seal is provided with axial spiral grooves which are uniformly distributed; the axial cross section of the spiral groove is in a right triangle, one wall side is vertical to the seal end face of the mechanical seal ring, the other wall side is an inclined wall side for connecting the seal ring end face and the bottom of the groove, and the two wall sides are crossed on the bottom of the spiral groove. The structure can lead the cooling and lubrication problem of the seal ring when in starting up to be effectively solved, reduces the heat and force deformation, enhances the working stability of the mechanical seal and prolongs the service life. The structure of the seal ring can be applied to the application field of all the mechanical seal of liquid medium, particularly to the high-temperature, high-pressure and high-speed working condition. The utility model has the main advantages of small deformation of the seal ring, stable seal lubrication effect and effectively prolonged service life of the mechanical seal.
Description
Technical field:
The present invention relates to the friction and the lubricated field of mechanical seal, is that a kind of seal ring end face in former mechanical seal is opened radially spiral chute, and the spiral fluted bottom surface is a streamline, is intended to obtain better hydrodynamic effect, the fretting wear of seal ring end face when reducing start.
Background technique:
Mechanical seal is a kind of running shaft axial end seal arrangement that is widely used in fields such as petrochemical industry, Aero-Space.Along with developing rapidly of science and technology, mechanical seal is had higher requirement, particularly, proposed to be used for the upstream pumping mechanical seal of seal fluid medium, liquid lubrication in order to adapt to the requirement of bad working environments conditions such as high pressure, high temperature, high speed.In recent years, the research for upstream pumping mechanical seal mainly was the pattern that improves seal face around the target of " minimizing leakage rate " and " raising dynamic pressure effect ".Chinese patent 02132978.8 has proposed a kind of spiral chute end surface mechanical sealing by the angular microflute group composition, it comprises seal ring body, ring body end face, the ring body end face is provided with the certain ring packing dam of radial width and coupled and radially inwardly or/and stretch out and have the spiral chute of certain depth along several that circumferentially distribute, and spiral chute is made up of gang's dihedral spiral microflute arranged side by side.This invention can make the pumping effect of spiral chute end surface mechanical sealing be improved, but for improving its dynamic pressure effect effect and not obvious.Israel professor Etsion.I is at Model for mechanical seals with regularmicrosurface structure.Tribology Transactions, 39 (3): proposed the mechanical seal that surface (toroidal surface) has the microcosmic cavity in 677-683 (1996) one literary compositions, find by theoretical calculation and experimental study: the microcosmic cavity helps producing the hydrodynamic effect, thus this class mechanical seal improve lubricated, to improve aspect the fluid film rigidity effect obvious.But this nick chamber can not produce the pumping effect, reduces the problem of leaking so can't solve.Chinese patent 200710067282.7 relates to a kind of variable distribution porous end face mechanical sealing structure, the dynamic and static ring that comprises mechanical seal, have at least on the seal face to have micropore in described rotating ring or stationary ring, described micropore differs in size, and is centrosymmetric on seal face and arranges.This mechanical seal is resistance to pressure, wear resistance and the convergence property of enhance fluid film to a certain extent, thereby improves the dynamic pressure effect of fluid film.But the increase effect of its dynamic pressure effect is slow, and the improvement of the dry friction problem during especially for start has little effect.And this type of mechanical seal can not produce the pumping effect of spiral chute mechanical seal.As seen, though above-mentioned mechanical seal is obtaining obvious progress aspect " reduce leak " and " improving the fluid film bearing capacity ", but still not fully up to expectations, especially the seal ring end-face friction situation when starting shooting to improve effect undesirable.
Summary of the invention:
The objective of the invention is to remedy above-mentioned deficiency, the fretting wear that can effectively reduce when start of proposition reduces the novel seal ring structure of leakage rate.It mainly is the frictional heating at mechanical seal, the unequal problem of being heated, by improving seal ring structure, the wearing and tearing of reducing friction improve lubricated cooling effect, reduce thermal distortion, avoid hot tearing, reduce leakage rate, improve the stability of seal operation, better performance end face changes the shape effect, obtains even more ideal mechanical seal.
The present invention relates generally to the improvement problem of seal ring end face pattern, it is characterized in that: offer along circumferential equally distributed radially spiral chute at the rotating ring end face of mechanical seal, quantity is generally at 15～20, the spiral fluted groove depth keeps certain numerical value, generally get 5～10 μ m, it is identical that the groove width of all grooves on same circumference tangent plane keeps, and promptly the groove width weir is wide more identical than γ.Described spiral fluted axial cross section is a right-angled triangle, be that spiral chute has two walls, a wall hangs down as for the seal face of mechanical seal ring, and another wall is an inclined wall that connects seal ring end face and bottom land, and two walls intersect at the spiral fluted bottom land.Because the wide ratio in spiral fluted groove width weir remains unchanged, so each spiral fluted groove width is radially increasing from inside to outside along seal ring, the gradient of the inclined wall of groove is not fixed thus, but because groove depth remains unchanged, so the gradient of spiral chute inclined wall is linearity from inside to outside and reduces.In order to produce better dynamic pressure effect, this inclined wall is direction of fall along the sense of rotation of seal ring.The outside of seal ring is the high pressure side, and the inboard of seal ring is a low voltage side.
Effect of the present invention mainly is: it is right-angled triangle that (1) rectangular cross section that spiral chute is traditional changes shape, can make the groove district produce better dynamic pressure effect when operation; (2) there is the wall of gradient design can reduce the shearing force that shear flow produces better, reduces the friction between the seal ring section, the working life of prolonged mechanical sealing.
Description of drawings:
Fig. 1 is seal ring structure figure of the present invention.
Fig. 2 is that the A-A of structural drawing 1 is to sectional drawing.
Fig. 3 is that the B-B of structural drawing 1 is to sectional drawing.
Among the figure, the 1-spiral chute; 2-seals the weir; 3-seals the dam; 4-stationary ring surface; ω-seal ring rotating speed; r
i-seal ring internal diameter; r
a-seal ring external diameter; r
g-spiral chute external diameter; b
1-spiral groove width; b
2-sealing weir is wide; h
g-groove depth.
Embodiment:
Seal ring end face spiral chute of the present invention (1) adds can adopt laser beam machining man-hour.
Embodiment 1: for r
o=25mm, r
iThe seal ring end face of=23mm, the circumference of seal ring internal side diameter are 2 π r
i≈ 144.5mm, the circumference of outside diameter are 2 π r
o≈ 157.1mm.If spiral chute (1) groove is counted N
gGet N
g=18, the groove width weir is wide gets γ=1.0 than γ, then the groove width b of inner radius
1Be b
1i=144.5/ (18*2) ≈ 4mm, the groove width b of outer radius
1Be b
1o=157.1/ (18*2) ≈ 4.4mm.If get groove depth h
gBe h
g=5 μ m, the gradient that can get the inclined wall of inner radius groove is i
i=h
g/ b
1i=(5*10
-3)/4=1.25 ‰, the gradient of the inclined wall of outer radius groove is i
o=h
g/ b
1o=(5*10
-3)/4.4=1.14 ‰, the middle gradient everywhere is linearity from inside to outside along the helix direction of spiral chute (1) and reduces, promptly between (1.25～1.14) ‰.
Embodiment 2: for r
o=35mm, r
iThe seal ring end face of=32mm, seal ring end face internal diameter girth is 2 π r
i≈ 201.06mm, the circumference of outside diameter are 2 π r
o≈ 219.9mm.If spiral chute (1) groove is counted N
gGet N
g=20, the groove width weir is wide gets γ=1.0 than γ, then the groove width b of internal diameter end
1Be b
1i=201.06/ (20*2) ≈ 5mm, the groove width b of outer radius
1Be b
1o=219.9/ (20*2) ≈ 5.5mm.If get groove depth h
gBe h
g=10 μ m, the gradient that can get the inclined wall of inner radius groove is i
i=h
g/ b
1i=(10*10
-3)/5=5 ‰, the gradient of the inclined wall of outer radius groove is i
o=h
g/ b
1o=(10*10
-3)/5.5=1.82 ‰, the middle gradient everywhere is line spare from inside to outside along the helix direction of spiral chute (1) and reduces, promptly between (5～1.82) ‰.
Claims (2)
1. novel spiral chute mechanical seal that axial cross section is a right-angled triangle, offer along circumferential equally distributed radially spiral chute at the rotating ring end face of mechanical seal, it is characterized in that: the axial cross section of described spiral chute (1) is a right angle triangle, a wall hangs down as for the seal face of mechanical seal ring, another wall is an inclined wall that connects seal ring end face and bottom land, and two walls intersect at the bottom land of spiral chute (1).
2. a kind of axial cross section according to claim 1 is the novel spiral chute mechanical seal of right-angled triangle, it is characterized in that: described spiral chute (1) quantity is 15～20, the groove depth of spiral chute (1) is maintained fixed numerical value, get 5～10 μ m, it is identical that the groove width of all grooves on same circumference tangent plane keeps, the gradient of described spiral chute (1) inclined wall is linearity from inside to outside and reduces, and this inclined wall is direction of fall along the sense of rotation of seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202319938U CN201547236U (en) | 2009-09-15 | 2009-09-15 | Novel spiral groove mechanical seal with right triangle-shaped axial cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202319938U CN201547236U (en) | 2009-09-15 | 2009-09-15 | Novel spiral groove mechanical seal with right triangle-shaped axial cross section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547236U true CN201547236U (en) | 2010-08-11 |
Family
ID=42602409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202319938U Expired - Fee Related CN201547236U (en) | 2009-09-15 | 2009-09-15 | Novel spiral groove mechanical seal with right triangle-shaped axial cross section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547236U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090005A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral distributed multi-hole end face rotary sealing ring used on vehicle |
| CN104595487A (en) * | 2015-01-30 | 2015-05-06 | 柳州市莫尔斯汽配制造有限公司 | Seal ring |
| CN107218395A (en) * | 2017-07-06 | 2017-09-29 | 浙江工业大学 | Ternary distorts type groove end surface mechanical sealing structure |
| CN107327577A (en) * | 2017-08-31 | 2017-11-07 | 江苏益通流体科技有限公司 | Dynamic pressure pumping formula non-contacting mechanical seal |
| CN108747611A (en) * | 2018-04-25 | 2018-11-06 | 科德数控股份有限公司 | It can high-speed rotating tool-broaching mechanism |
| CN110374880A (en) * | 2019-07-24 | 2019-10-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly and compressor |
-
2009
- 2009-09-15 CN CN2009202319938U patent/CN201547236U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090005A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral distributed multi-hole end face rotary sealing ring used on vehicle |
| CN104595487A (en) * | 2015-01-30 | 2015-05-06 | 柳州市莫尔斯汽配制造有限公司 | Seal ring |
| CN107218395A (en) * | 2017-07-06 | 2017-09-29 | 浙江工业大学 | Ternary distorts type groove end surface mechanical sealing structure |
| CN107327577A (en) * | 2017-08-31 | 2017-11-07 | 江苏益通流体科技有限公司 | Dynamic pressure pumping formula non-contacting mechanical seal |
| CN107327577B (en) * | 2017-08-31 | 2023-04-07 | 江苏益通流体科技有限公司 | Non-contact mechanical seal of power and pressure pumping type |
| CN108747611A (en) * | 2018-04-25 | 2018-11-06 | 科德数控股份有限公司 | It can high-speed rotating tool-broaching mechanism |
| CN110374880A (en) * | 2019-07-24 | 2019-10-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201582390U (en) | Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove | |
| CN201547236U (en) | Novel spiral groove mechanical seal with right triangle-shaped axial cross section | |
| EP2977655B1 (en) | Sliding part | |
| CN108591476B (en) | A kind of dry gas sealing device suitable for overcritical working medium | |
| JP6522000B2 (en) | Sliding parts | |
| US9845886B2 (en) | Sliding parts | |
| CN103267132A (en) | Self-pumping fluid-dynamic-pressure-type mechanical seal | |
| US20170002930A1 (en) | Sliding parts | |
| AU2015319396B2 (en) | Sliding component | |
| WO2014042045A1 (en) | Slide part | |
| AU2014354094A1 (en) | Sliding component | |
| CN103016743B (en) | Mechanical seal capable of implementing zero wear, zero leakage and preventing solid particles | |
| CN103133697B (en) | Can the dovetail groove end surface mechanical sealing structure of bidirectional rotation | |
| CN2432391Y (en) | Linear fluid dynamic channel upstream pumping machine seal | |
| CN203335870U (en) | Self-pumping fluid-dynamic-pressure-type mechanical seal | |
| CN100370166C (en) | Wear-resistant mechanical sealing structure on end face | |
| CN101514752B (en) | Shell-shaped mechanical seal ring with sector deep groove inside | |
| CN206555446U (en) | A kind of self-lubricating non-contact mechanical seal device | |
| CN109237031A (en) | A kind of axis surface has the lip seal configuration of texture | |
| CN104019024B (en) | Anti-leak dynamic pressure type valve plate | |
| CN205559791U (en) | Two Y type groove terminal surface mechanical seal structure of symmetric distribution | |
| CN110410504B (en) | Mechanical seal end face structure of variable-depth spiral T-shaped groove | |
| CN206988428U (en) | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture | |
| CN107314112B (en) | Mechanical seal end face structure imitating grinding disc textures | |
| CN205639618U (en) | Mechanical seal end face slot type structure with bispin is to hydrodynamic effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20110915 |