CN109237039B - Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove - Google Patents
Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove Download PDFInfo
- Publication number
- CN109237039B CN109237039B CN201811187170.XA CN201811187170A CN109237039B CN 109237039 B CN109237039 B CN 109237039B CN 201811187170 A CN201811187170 A CN 201811187170A CN 109237039 B CN109237039 B CN 109237039B
- Authority
- CN
- China
- Prior art keywords
- groove
- sub
- grooves
- quasi
- 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.)
- Active
Links
Classifications
-
- 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
-
- 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
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
A kind of close and fold the mechanical seal structure of end face of deep groove gas lubrication of the compound groove of the Luohan, including mechanical seal's rotating ring and quiet ring, offer multiple close and fold the Luohan compound groove deep groove of the Luohan evenly distributed spirally along the direction of circumference on the end face of at least one seal ring in said rotating ring and quiet ring, narrow gradually from the upper reaches to the lower reaches; the deep groove like the laminated Rohan composite groove consists of a basic dynamic pressure groove and a groove like the laminated Rohan, wherein the groove bottom surface of the basic dynamic pressure groove is provided with the groove like the laminated Rohan, and the depth of the groove like the laminated Rohan becomes shallow gradually from upstream to downstream; the quasi-laminated Luohan-shaped groove is formed by splicing a plurality of rows of sub-grooves, and adjacent sub-grooves in the same row are separated by a sealing weir with the depth equal to that of the basic dynamic pressure groove; the sub-groove on the downstream side straddles the sealing weir between the two sub-grooves on the adjacent row on the upstream side and is communicated with the sub-grooves on the two sides of the sealing weir on the upstream side; and a sealing dam is arranged at the downstream of the end face.
Description
The application is a divisional application of the invention patent application with the application number of 201510329342.2, the application date of 2015, 6 and 15, and the invention name of the invention being 'a mechanical sealing structure of a gas lubrication end face of a deep groove of a similar overlapping Luohan composite groove'.
Technical Field
The invention relates to a hydrodynamic pressure type gas lubrication end face mechanical sealing structure of a rotary fluid machine, in particular to a composite groove deep end face sealing structure containing a basic dynamic pressure groove and a similar laminated arhat groove, which is suitable for sealing the end faces of gas films at the shaft ends of various rotary machines such as compressors, fans, pumps, reaction kettles and the like.
Background
Since the development of the last 60 years, dry gas sealing has been widely applied to medium and high speed rotating machines such as centrifugal compressors, fans and the like due to unique performance advantages. The dry gas seal is characterized in that a dynamic pressure groove with a spiral line, a straight line or an arc line as a molded line is formed in a seal end face, when a movable ring rotates, a gas medium is pumped into the seal end face by utilizing a strong dynamic and static pressure effect of the dynamic pressure groove, the gas entering the seal end face is blocked and boosted at a groove root, and certain fluid dynamic and static pressure is generated to push the end face away, so that the dry gas seal can operate in a non-contact manner under the condition of a layer of micron-sized gas film, but the problems of high leakage rate, insufficient gas film rigidity, poor high-speed disturbance resistance capability and the like of the conventional dry gas seal in the using process of a medium-high-speed rotating machine exist, and failure accidents occur.
In order to reduce the leakage rate of dry gas seal under high speed condition and improve the sealing performance, a spiral groove end face seal (US 6152452) of the U.S. patent proposes a splayed spiral groove structure, wherein a downstream pumping groove for pumping gas medium into the sealing end face is arranged on the upstream side of the sealing end face, a counter-flow pumping groove for back-pumping leakage gas to the upstream side is arranged on the downstream side of the end face, and an unslotted circumferential sealing dam is arranged between the same group of downstream pumping grooves and counter-flow pumping grooves in the radial direction. Although this structure can effectively reduce leakage of the sealing medium to the inner diameter side, the gas film rigidity thereof is lowered to some extent, which is disadvantageous for the gas film stability under high speed conditions.
In order to improve the gas film rigidity of dry gas seal of the spiral groove under the high-speed condition and improve the operation stability, the end face sealing device of the double-spiral groove three-dimensional spiral groove (CN2594554Y), the gas end face sealing structure of the bottom surface type groove with the three-dimensional similar feather texture (CN101644333A), the non-contact mechanical end face seal of the United states patent (US5441283A) and the like in Chinese patents, for example, the performance research of the dry gas end face seal of the bionic multi-blade airfoil-shaped groove (see the journal of tribology, 33 rd volume in 2013, 4 th period: pp372-381), compared with the common one-way dry gas seal of the spiral groove, the end face seal has certain performance advantages under the high-speed condition in the design of the groove, but still has the defects of higher leakage rate, poor comprehensive sealing.
Disclosure of Invention
The invention aims to solve the problems of high leakage rate and insufficient gas film rigidity of dry gas seal in high-speed and high-pressure operation, and provides a mechanical seal structure of a quasi-laminated Rohan composite groove deep gas end face, which has high dynamic pressure of end face fluid, high gas film rigidity and low leakage rate under a high-speed and high-pressure condition.
The technical scheme of the invention is as follows:
a mechanical seal structure of a gas lubrication end face of a quasi-overlapping Luohan composite groove deep-groove comprises a moving ring and a static ring which are mechanically sealed, wherein one side of the end face of the moving ring or the static ring is a high-pressure side, namely an upstream, and the other side of the end face of the moving ring or the static ring is a low-pressure side, namely a downstream, and is characterized in that: the end surface of at least one sealing ring in the movable ring and the static ring is provided with a plurality of quasi-laminated-Luohan composite groove deep grooves which are uniformly distributed in a spiral shape along the circumferential direction, and the quasi-laminated-Luohan composite groove deep grooves gradually narrow from upstream to downstream; the deep groove is composed of a basic dynamic pressure groove and a quasi-siraitia groove, the basic dynamic pressure groove is arranged at the upstream of the end face, the quasi-siraitia groove is arranged on the bottom surface of the basic dynamic pressure groove, and the depth of the quasi-siraitia groove becomes shallow gradually from the upstream to the downstream; the quasi-laminated Luohan-shaped groove is formed by splicing a plurality of rows of sub-grooves, and adjacent sub-grooves in the same row are separated by a sealing weir with the depth equal to that of the basic dynamic pressure groove; the sub-groove on the downstream side straddles the sealing weir between two sub-grooves on the adjacent row on the upstream side;
and a sealing dam is arranged at the downstream of the end surface of the deep groove of the quasi-laminated arhat composite groove.
Further, the sub-groove on the downstream side is communicated with the sub-grooves on both sides of the sealing weir on the upstream side.
Alternatively, the sub-groove on the downstream side and the sub-groove on both sides of the straddled seal weir on the upstream side are separated by a fan-shaped seal weir having the same depth as the base dynamic pressure groove.
Further, the width of the subslot on the downstream side is smaller than that of the adjacent row of subslots on the upstream side.
Preferably, the quasi-sirup groove is formed by splicing 3 rows of sub-grooves, wherein 3 sub-grooves are positioned in an upstream row, 1 sub-groove is positioned in a downstream row, and 2 sub-grooves are positioned in a middle row.
Further, the basic dynamic pressure groove has a groove root radius rgArc included angle thetagiAnd at the outer diameter roArc included angle thetagoRatio of thetagi/θgo0-1; the basic dynamic pressure groove has an outer diameter roArc included angle thetagArc included angle theta between the sealing weir and the corresponding arc included angle theta at the same radiuslRatio of thetag/θlIs selected to be in the range of thetag/θl0.5-8 percent; depth h of the basic dynamic pressure groove0The selected value range is 0-10 mu m, and the depth h of the quasi-siraitia grooveiThe selected value range is 1-30 μm.
Preferably, θgi/θgo＝0.3～0.6，θg/θl1.5-4; depth h of the basic dynamic pressure groove0The preferred value range is 0.5-5 mu m, and the depth h of the quasi-herring-Han-shaped grooveiThe preferred value range is 2-18 μm.
The working principle of the invention is as follows: when the deep groove like the laminated Luohan composite groove is in dry gas sealing operation, the basic dynamic pressure groove with the shallow depth on the upstream side of the sealing end surface is machined to pump fluid media from the outer diameter side to the inner diameter side, gas forms a high-pressure area near the groove root of the basic dynamic pressure groove, and the converging structure of the basic dynamic pressure groove, the flow passage of which is gradually narrowed from the upstream to the downstream, is beneficial to compression pressurization of the fluid media in the upstream groove. The lower layer of the basic dynamic pressure groove is provided with a quasi-laminated Rohan-shaped groove with the depth gradually becoming shallow from the upstream to the downstream, and the groove width of each sub-groove also becomes gradually narrower from the upstream to the downstream, so that a typical three-dimensional convergent groove type is formed, and the compression effect on the fluid medium is further improved. The sub-grooves in the same row are separated by sealing weirs with the depth equal to that of the basic dynamic pressure grooves, fluid can be pumped from the plurality of circumferentially separated sub-grooves from the outer diameter to the center, and the multi-groove drainage structure has a stronger flow guide effect on the fluid; the upstream subslots of the quasi-overlapped Rohan-shaped grooves are correspondingly communicated with the adjacent downstream subslots one by one, the number of the downstream same-row subslots in the same basic dynamic pressure groove is less than that of the adjacent upstream same-row subslots, and the depth of the downstream same-row subslots is smaller than that of the adjacent upstream same-row subslots, so that fluid media pumped from the upstream are continuously converged and extruded in the downstream similar-overlapped Rohan-shaped grooves, and a stronger dynamic pressure effect is formed. At the groove root on the windward side of each row of the sub-grooves and the basic dynamic pressure groove, the fluid flow is blocked, the medium pressure is increased, so that obvious pressure peaks distributed in the radial direction are formed, the pressure peaks are increased step by step from the upstream side to the downstream side of the end surface, and the pressure peaks are mutually interfered and superposed to form a high-pressure area with a larger area.
The invention has the advantages and beneficial effects that:
(1) the structure consists of a basic dynamic pressure groove and a quasi-overlapped-Siraitia groove, wherein the groove width of the basic dynamic pressure groove is gradually narrowed from upstream to downstream, the groove depth of the quasi-overlapped-Siraitia groove processed on the bottom surface of the basic dynamic pressure groove is gradually narrowed from upstream to downstream, the groove width of each row of quasi-overlapped-Siraitia grooves is also gradually narrowed from upstream to downstream, the formed typical three-dimensional convergent groove has stronger compression action and pumping action on fluid media, larger end surface bearing force and fluid film rigidity can be obtained under the condition of the same fluid film thickness, and the high-speed operation stability of sealing is improved.
(2) The sub-grooves which are positioned in the same row of the quasi-overlapping Luohan-shaped groove are separated by the sealing weir with the depth equal to that of the basic dynamic pressure groove, and the formed multi-groove drainage structure has stronger diversion effect on fluid media, so that the fluid media can more uniformly enter the sealing end face, the eddy effect in the end face type groove of the sealing ring under the high-speed and high-pressure operation condition is weakened, and the sealing operation stability is improved.
(3) The multiple pressure peaks which are distributed in the radial direction and the circumferential direction and are formed by the fluid medium at the groove root on the windward side of each sub-groove and the basic dynamic pressure groove in the same row like the overlapped Rohan-shaped groove are mutually overlapped, and compared with a single high-pressure area formed at the groove root on the inner diameter side close to the end surface of a common fluid dynamic pressure type groove such as a spiral groove, a U-shaped groove, a V-shaped groove, an arc groove or a straight line groove, the high-pressure area with a larger area is formed, the bearing capacity and the air film rigidity of the seal are favorably improved, and the start-stop characteristic and the high-speed; in addition, the distances between a plurality of high-pressure areas positioned on the upstream side of the end surface in the quasi-overlapping-Luohan-shaped groove and the inner diameter side are larger, the flow blocking effect is enhanced, the leakage of fluid media to the inner diameter side can be obviously reduced, and the sealing performance of the gas film sealing is improved to a greater extent.
(4) By reasonably designing the geometric dimensions of the basic dynamic pressure groove and the quasi-overlapping-Siraitia type groove, the interference overlapping of a fluid high-pressure area in the basic dynamic pressure groove and a fluid high-pressure area in the quasi-overlapping-Siraitia type groove can be realized, so that the pressure distribution of the sealing end surface is more uniform, the average pressure peak value is higher, and larger bearing capacity and air film rigidity are generated.
Description of the drawings:
FIG. 1 is a schematic end view of a slot in accordance with a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a unified definition of geometric parameters of a slotted end face according to a first embodiment of the present invention;
FIG. 3 is a three-dimensional block diagram of a first embodiment of the present invention;
FIG. 4 is a schematic diagram of the operation of embodiment one of the present invention;
FIG. 5 is a schematic end view of a slot of a second embodiment of the present invention;
FIG. 6 is a three-dimensional structural diagram of a second embodiment of the present invention;
FIG. 7 is a schematic end view of a third embodiment of the invention;
FIG. 8 is a three-dimensional structural view of a third embodiment of the present invention;
FIG. 9 is a schematic end view of a slot in accordance with a fourth embodiment of the present invention;
fig. 10 is a three-dimensional structural view of a fourth embodiment of the present invention.
Detailed Description
The invention is further described in detail with reference to the attached drawings.
Example one
Referring to fig. 1, 2 and 3, a laminated-arhat-like composite groove deep-groove gas lubrication end face mechanical seal structure comprises a dynamic ring and a static ring of mechanical seal, wherein one side of the end face of the dynamic ring or the static ring is a high-pressure side, namely an upstream side, and the other side of the end face of the dynamic ring or the static ring is a low-pressure side, namely a downstream side, and is characterized in that: the end face of at least one sealing ring in the movable ring and the static ring is provided with a plurality of quasi-overlapping-Luohan composite groove deep grooves which are uniformly distributed along the circumferential direction, each quasi-overlapping-Luohan composite groove deep groove is composed of a basic movable pressure groove 4 and a quasi-overlapping-Luohan groove 1, the basic movable pressure groove 4 is arranged on the upstream of the end face, the groove bottom face of the basic movable pressure groove 4 is provided with the quasi-overlapping-Luohan groove 1, the upstream sub-grooves 11, 13 and 15 of two adjacent rows of grooves in the quasi-overlapping-Luohan grooves 1 are wider than those of the sub-grooves adjacent to the downstream, the sub-grooves 11, 13, 15, 21 and 23 in the same row are respectively partitioned by sealing weirs 12, 14 and 22 with the depth equal to that of the basic movable pressure groove 4, and the downstream of the end face of the quasi-overlapping-Luohan composite groove is provided with a non.
In the overlapped-similar-arhat-shaped groove, the sub-groove at the downstream side is communicated with the sub-grooves at the two sides of the sealing weir at the upstream side. The sub-grooves 11, 13 and 21, 13, 15 and 23, 21, 23 and 3 of the adjacent two rows correspondingly penetrate.
The basic dynamic pressure groove 4 has a groove root radius rgArc included angle thetagiAnd at the outer diameter roArc included angle thetagoRatio of thetagi/θgoIs selected to be in the range of thetagi/θgo0 to 1, with a preferred value range of θgi/θgo＝0.3～0.6。
The basic dynamic pressure groove 4 has an outer diameter roArc included angle thetagThe included angle theta of the circular arc at the same radius position with the corresponding sealing weir 5gRatio of thetag/θlIs selected to be in the range of thetag/θl0.5 to 8, and a preferable value range is θg/θl＝1.5～4。
Depth h of the basic dynamic pressure groove 40The selected value range is 0-20 μm, the preferred value range is 0.5-5 μm, and the depth h of the quasi-siraitia tank 1 isiThe selected value range is 1-100 μm, and the selected preferred value range is 2-20 μm. The depth of each row of sub-grooves becomes gradually shallow from the upstream to the downstream of the end surface, namely the groove depth h of the upstream row of sub-grooves 11, 13 and 153Groove depth h of intermediate row of sub-grooves 21 and 232Groove depth h of downstream row of seed grooves 31Satisfies the following conditions: h is1＜h2＜h3。
Referring to fig. 1 and 4, in the process of flowing fluid medium from the outer diameter side to the inner diameter side, a plurality of pressure peaks distributed in the radial direction and the circumferential direction are formed at the windward groove roots 110, 130 and 150 of the upstream row of sub-grooves 11, 13 and 15, the windward groove roots 210 and 230 of the middle row of sub-grooves 21 and 23, the windward groove root 30 of the downstream row of sub-grooves 3 and the windward groove root 40 of the basic dynamic pressure groove 4, the pressure of the sealing end face is divided into more uniform pressure, and the pressure peaks are mutually interfered and superposed to form a high pressure zone with a larger area, which is beneficial to improving the gas film bearing capacity and the gas film rigidity.
Example two
Referring to fig. 5 and 6, the present embodiment is different from the first embodiment in that, in the folded-in-sirhat-like groove, the sub-groove on the downstream side and the sub-groove on both sides of the straddled seal weir on the upstream side are separated by a fan-shaped seal weir having the same depth as the basic dynamic pressure groove.
The upstream row of subslots 11, 13, 15 is separated from the adjacent downstream row of subslots 21, 23 by a sealing dam 42 having the same depth as that of the basic dynamic pressure groove 4, and the intermediate row of subslots 21, 23 is separated from the adjacent downstream row of subslots 3 by a sealing dam 41 having the same depth as that of the basic dynamic pressure groove 4, and the rest of the structure and embodiment are the same as those of the first embodiment.
EXAMPLE III
Referring to fig. 7 and 8, this embodiment is different from the first embodiment in that the intermediate row of sub-slots 21 and 23 are respectively inlaid between adjacent upstream row of sub-slots 11 and 13 and 15, and the downstream row of sub-slots 3 is inlaid between the intermediate row of sub-slots 21 and 23, and the rest of the structure and the implementation are the same as the first embodiment.
Example four
Referring to fig. 9 and 10, the present embodiment is different from the first embodiment in that the sidewall profile of the basic dynamic pressure groove 4 is a radial straight line, the sidewall profile of each of the sirnas in the sirnas-like groove 1 is a straight line, the basic dynamic pressure groove 4 and the sirnas-like groove 1 are bidirectional grooves symmetrical with respect to a radial line, the deep groove gas lubrication end face mechanical seal of the sirnas-like composite groove can be applied to a bidirectional rotary fluid machine, and the rest of the structure and the embodiment are the same as those of the first embodiment.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (1)
1. A mechanical seal structure of a gas lubrication end face of a quasi-overlapping Luohan composite groove deep-groove comprises a moving ring and a static ring which are mechanically sealed, wherein one side of the end face of the moving ring or the static ring is a high-pressure side, namely an upstream, and the other side of the end face of the moving ring or the static ring is a low-pressure side, namely a downstream, and is characterized in that: the end surface of at least one sealing ring in the movable ring and the static ring is provided with a plurality of quasi-laminated-Luohan composite groove deep grooves which are uniformly distributed in a spiral shape along the circumferential direction, and the quasi-laminated-Luohan composite groove deep grooves gradually narrow from upstream to downstream; the deep groove is composed of a basic dynamic pressure groove and a quasi-siraitia groove, the basic dynamic pressure groove is arranged at the upstream of the end face, the quasi-siraitia groove is arranged on the bottom face of the basic dynamic pressure groove, and the depth of the quasi-siraitia groove becomes shallow gradually from the upstream to the downstream; the quasi-laminated Luohan-shaped groove is formed by splicing a plurality of rows of sub-grooves, and adjacent sub-grooves in the same row are separated by a sealing weir with the depth equal to that of the basic dynamic pressure groove; the sub-groove on the downstream side straddles the sealing weir between two sub-grooves on the adjacent row on the upstream side; a sealing dam is arranged at the downstream of the end face of the deep groove of the quasi-laminated arhat composite groove;
the subslot at the downstream side and the subslots at the two sides of the sealing weir at the upstream side are separated by a fan-shaped sealing weir with the same depth as the basic dynamic pressure type groove;
the quasi-siraitia-superimposed groove is formed by splicing 3 rows of sub-grooves, wherein 3 sub-grooves are positioned in an upstream row, 1 sub-groove is positioned in a downstream row, and 2 sub-grooves are positioned in a middle row;
the width of the subslot at the downstream side is smaller than that of the subslot at the adjacent row at the upstream side;
the basic dynamic pressure type groove has a groove root radius rgArc included angle thetagiAnd at the outer diameter roArc clip ofAngle thetagoRatio of thetagi/θgo0.3 to 0.6, the basic dynamic pressure groove having an outer diameter roArc included angle thetagoArc included angle theta between the sealing weir and the corresponding arc included angle theta at the same radiuslRatio of thetag/θl1.5-4; depth h of the dynamic pressure type groove of the foundation0The range is 0.5-5 mu m, and the depth h of the laminated Roohan-like grooveiThe range is 2 to 18 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811187170.XA CN109237039B (en) | 2015-06-15 | 2015-06-15 | Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510329342.2A CN104913066B (en) | 2015-06-15 | 2015-06-15 | Like the compound groove depth type groove gas lubrication end surface mechanical sealing structure of pyramid |
| CN201811187170.XA CN109237039B (en) | 2015-06-15 | 2015-06-15 | Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510329342.2A Division CN104913066B (en) | 2015-06-15 | 2015-06-15 | Like the compound groove depth type groove gas lubrication end surface mechanical sealing structure of pyramid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237039A CN109237039A (en) | 2019-01-18 |
| CN109237039B true CN109237039B (en) | 2019-12-24 |
Family
ID=54082384
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811187170.XA Active CN109237039B (en) | 2015-06-15 | 2015-06-15 | Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove |
| CN201510329342.2A Active CN104913066B (en) | 2015-06-15 | 2015-06-15 | Like the compound groove depth type groove gas lubrication end surface mechanical sealing structure of pyramid |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510329342.2A Active CN104913066B (en) | 2015-06-15 | 2015-06-15 | Like the compound groove depth type groove gas lubrication end surface mechanical sealing structure of pyramid |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109237039B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI640704B (en) * | 2017-06-06 | 2018-11-11 | 祥景精機股份有限公司 | Non-contacting gas seals with inflectional grooves |
| CN107314112B (en) * | 2017-07-24 | 2023-07-21 | 浙江工业大学 | Mechanical seal end face structure imitating grinding disc textures |
| 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 |
| CN108825788A (en) * | 2018-07-19 | 2018-11-16 | 天津科技大学 | Mechanical sealing end face structure |
| CN109826960B (en) * | 2019-03-05 | 2024-03-26 | 浙江工业大学 | Axial multilayer flow channel superposition backflow pumping mechanical seal structure |
| CN109838562B (en) * | 2019-03-05 | 2024-03-26 | 浙江工业大学 | Axial multilayer flow passage superposition reinforced pumping mechanical seal structure |
| CN111981126B (en) * | 2019-05-23 | 2022-04-19 | 浙江大学宁波理工学院 | Compound sealed end surface structure of three fens of collection micropores and ladder spiral groove |
| CN110822084B (en) * | 2019-11-19 | 2021-12-21 | 潍柴动力股份有限公司 | Sealing member and engine |
| CN113669454B (en) * | 2021-08-25 | 2024-05-17 | 江苏金鹰流体机械有限公司 | End face dry gas sealing structure |
| CN116733975A (en) * | 2023-08-14 | 2023-09-12 | 东营海森密封技术有限责任公司 | Dynamic and static pressure combined type air film sealing device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209484A1 (en) * | 1991-06-12 | 1993-10-21 | Heinz Konrad Prof Dr I Mueller | Mechanical seal with return flow |
| US5722665A (en) * | 1992-02-26 | 1998-03-03 | Durametallic Corporation | Spiral groove face seal |
| AU685502B2 (en) * | 1993-09-01 | 1998-01-22 | Durametallic Corporation | Face seal with angled and annular grooves |
| JPH09329247A (en) * | 1996-06-11 | 1997-12-22 | Ebara Corp | Non-contact end surface seal |
| US6142478A (en) * | 1998-02-06 | 2000-11-07 | John Crane Inc. | Gas lubricated slow speed seal |
| DE29806905U1 (en) * | 1998-04-16 | 1998-07-09 | Feodor Burgmann Dichtungswerke GmbH & Co, 82515 Wolfratshausen | Mechanical seal arrangement, in particular for liquid gas sealing |
| CN100427816C (en) * | 2002-09-20 | 2008-10-22 | 徐万福 | Helical flute and face mechanial seal composed of angular microflute group |
| CN201772069U (en) * | 2010-04-12 | 2011-03-23 | 西华大学 | Intermediate rotation ring mechanical sealing device |
| CN102128272A (en) * | 2011-02-25 | 2011-07-20 | 西华大学 | Controllable mechanical sealing device |
| CN203286000U (en) * | 2012-12-24 | 2013-11-13 | 浙江工业大学 | Micro-bulge double layer composite groove deep end face mechanical seal structure |
| CN203285988U (en) * | 2012-12-24 | 2013-11-13 | 浙江工业大学 | Micro groove double layer composite groove deep end face mechanical seal structure |
| CN203413119U (en) * | 2013-02-26 | 2014-01-29 | 浙江工业大学 | Sharkskin imitation streamline groove end face mechanical sealing structure |
| CN203686153U (en) * | 2013-08-23 | 2014-07-02 | 浙江工业大学 | Bird wing imitation type multi-passage groove end surface sealing structure |
| CN204985726U (en) * | 2015-06-15 | 2016-01-20 | 浙江工业大学 | Like compound groove depth type groove gas lubrication terminal surface mechanical seal structure of pyramid |
-
2015
- 2015-06-15 CN CN201811187170.XA patent/CN109237039B/en active Active
- 2015-06-15 CN CN201510329342.2A patent/CN104913066B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104913066B (en) | 2019-02-01 |
| CN109237039A (en) | 2019-01-18 |
| CN104913066A (en) | 2015-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109237039B (en) | Mechanical sealing structure for gas lubrication end face of deep groove of quasi-laminated arhat composite groove | |
| CN106763778B (en) | A kind of upstream pumping mechanical seal ring with multiple coil slot | |
| CN106439023B (en) | A kind of cosine curve type mechanical seal end surface structure | |
| CN202327105U (en) | Mechanical sealing device for fixed taper type waveform curved surface | |
| CN101469771B (en) | Bidirectionally rotary cascade arc groove mechanical sealing end-face | |
| CN205877184U (en) | Mechanical seal ring with imitative chinese sweet gum lobate shaped groove | |
| CN103470773B (en) | Imitative pinion type multichannel groove end face seal structure | |
| CN106015571B (en) | A kind of mechanical seal ring with imitative maple leaf shape groove | |
| CN107489770A (en) | A kind of two-way mechanical sealing ring | |
| CN104728451B (en) | The non-contact mechanical seal structure that directivity macropore combines with three dimensional type groove | |
| CN202327104U (en) | Variable taper type wave-shaped curved surface mechanical seal device | |
| CN103016743B (en) | Mechanical seal capable of implementing zero wear, zero leakage and preventing solid particles | |
| CN105987175B (en) | The mechanical seal structure combined with three-dimensional like flakes groove profile with various passes | |
| CN106122482A (en) | A kind of low leakage non-contacting mechanical seal end face structure | |
| CN205244387U (en) | Two -way rotatory petal -shaped terminal surface mechanical seal structure | |
| CN107314112B (en) | Mechanical seal end face structure imitating grinding disc textures | |
| CN208918899U (en) | One kind is like the combined mechanical seal end surface structure of comb dynamic and static pressure | |
| CN102588601A (en) | Mechanical sealing structure with flower and plant simulating fluid type groove end surfaces | |
| CN105065675B (en) | Seal ring with streamline groove end face and mechanical seal device | |
| CN206988428U (en) | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture | |
| CN107366748B (en) | VW mechanical seal end face structure | |
| CN106763779B (en) | A kind of mechanical seal ring with more zigzag helicla flutes | |
| CN204985726U (en) | Like compound groove depth type groove gas lubrication terminal surface mechanical seal structure of pyramid | |
| 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 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |