CN111089172A - Mechanical sealing device with heat transfer strengthening structure - Google Patents
Mechanical sealing device with heat transfer strengthening structure Download PDFInfo
- Publication number
- CN111089172A CN111089172A CN202010041662.9A CN202010041662A CN111089172A CN 111089172 A CN111089172 A CN 111089172A CN 202010041662 A CN202010041662 A CN 202010041662A CN 111089172 A CN111089172 A CN 111089172A
- Authority
- CN
- China
- Prior art keywords
- sealing device
- mechanical sealing
- airflow
- face
- mechanical
- 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.)
- Granted
Links
Images
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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention provides a mechanical sealing device with a heat transfer strengthening structure, which comprises a front end surface (sealing surface) (1), an outer ring cylindrical surface (2), a rear end surface (supporting surface) (3), an inner ring cylindrical surface (4), an airflow inlet (5), an inner ring side airflow outlet (6), an outer ring side airflow outlet (7), an inner diameter side flow guide hole (8), an outer diameter side flow guide (9), a flow disturbing structure M and the like, wherein the flow disturbing structures M and the outer ring side airflow outlet (7), the inner diameter side flow guide hole (8), the outer diameter side flow guide (9) and the flow disturbing structure M are; the heat transfer strengthening structure is arranged on the sealing ring, so that the heat dissipation area of the mechanical sealing ring is greatly increased; the shell structure saves a part of manufacturing materials, and the cost of the sealing element is reduced; the structure is applied to the existing non-contact mechanical seal, the advantage of seal end face reshaping can be better exerted, the seal lubrication effect and stability are obviously enhanced, and the service life of the seal is greatly prolonged; the device has scientific structure, good manufacturability and wide popularization and application value.
Description
Technical Field
The invention provides a mechanical sealing device with a heat transfer strengthening structure, in particular to a mechanical sealing device, wherein a certain number of gas guide grooves are formed in a ring body of the mechanical sealing device, and a gas guide hole is formed in the rear end face of the ring body of the mechanical sealing device, and belongs to the technical field of rotary shaft sealing in fluid sealing. The sealing device is suitable for shaft end sealing devices of rotating machinery shafts of various compressors, expanders, pumps, reaction kettles, mixers and the like.
Background
The mechanical seal is an axial end face sealing device which achieves sealing by means of pre-tightening of an elastic element on a movable ring end face sealing pair and a static ring end face sealing pair and pressing of medium pressure and elastic element pressure, and is also called end face sealing. The mechanical seal is widely applied to equipment such as centrifugal pumps, centrifuges, reaction kettles, compressors and the like. With continuous progress of science and technology, higher requirements are provided for mechanical sealing in practical production application, and the mechanical sealing is required to be capable of operating well under extreme working conditions of high pressure, high speed, frequent start and stop and the like, so that higher requirements are provided for the performance of the mechanical sealing.
At present, the research on mechanical sealing by a plurality of experts and scholars at home and abroad is a positive and intuitive research: if the leakage is low, the opening force is large, the oil film stability is good, the friction and the abrasion are small, the service life is long, the work is reliable, and the like, and good effects are obtained. A large number of theoretical bases, design methods and the like are accumulated for the design of the mechanical seal. And the research on the heat dissipation of the dynamic and static rings of the mechanical seal is rare. Friction heat generated by operation between a moving ring and a static ring of the traditional mechanical seal and shear heat inside fluid cannot be well dissipated, so that the end face deforms due to uneven heating, and the sealing end face can crack when the end face is seriously heated, and the mechanical sealing performance is greatly reduced. Even premature failure of the mechanical seal. The excessively high end face temperature becomes a bottleneck restricting the mechanical seal from developing towards long service life and high reliability, so how to reduce the end face temperature of the seal becomes a problem to be solved urgently.
Disclosure of Invention
Object (a)
The invention aims to overcome the defects of the prior art and provide a mechanical sealing device with a heat transfer strengthening structure, which is a novel mechanical sealing device with strong end face heat conduction capability, good temperature equalization performance, strong disturbance resistance absorption performance and better start-stop characteristic. The mechanical seal can effectively solve the problem that the end face of the existing mechanical seal deforms due to overhigh temperature and uneven heating of the end face when in work, thereby improving the mechanical seal performance.
(II) technical scheme
The existing mechanical seal movable ring or static ring (as shown in fig. 1) is a cylinder and consists of a front end surface (sealing surface), an outer ring cylindrical surface, a rear end surface (supporting surface), an inner ring cylindrical surface and the like; generally used as the called front end surface of a sealing surface and used as the called rear end surface of a supporting surface; the movable ring or the static ring of the mechanical sealing device is shown in fig. 2, one side of the end surface of the movable ring or the static ring is a high-pressure side, namely an upstream side, the other side of the end surface of the movable ring or the static ring is a low-pressure side, namely a downstream side, and a plurality of heat transfer strengthening structures which are uniformly distributed along the circumferential direction are arranged on the ring body of the movable ring or the static ring;
the invention relates to a mechanical sealing device with a heat transfer enhancement structure, which is shown in figure 3 and is characterized in that: the mechanical sealing device comprises a front end face (sealing face) (1), an outer ring cylindrical surface (2), a rear end face (supporting face) (3), an inner ring cylindrical surface (4), an airflow inlet (5), an inner ring side airflow outlet (6), an outer ring side airflow outlet (7), an inner diameter side flow guide hole (8), an outer diameter side flow guide hole (9), a flow disturbing structure M and the like, which are positioned at different positions on a ring body of the mechanical sealing device;
the front end face (1) is a sealing face of the mechanical sealing device;
the outer ring cylindrical surface (2) is an outer cylindrical surface of the mechanical sealing device;
the rear end face (3) is a supporting surface of the mechanical sealing device and is combined with the compensating mechanism;
the inner cylindrical surface (4) is the inner cylindrical surface of the mechanical sealing device;
the airflow inlet (5) is a rectangular hole uniformly formed in the inner annular cylindrical surface 4 of the mechanical sealing device along the circumferential direction;
the shape structure of the airflow inlet (5) is a rectangle as shown in fig. 4, the structure sizes are L2 and L3, L2 is the axial thickness from the rear end face (supporting face) (3), L3 is the axial thickness from the front end face (sealing face) (1), and L3 is 1.25 multiplied by L2; the airflow inlets (5) are arranged on the inner ring cylindrical surface (4) of the mechanical sealing device and are uniformly distributed in an amount of 15-18 along the circumferential direction, and the specific number is determined according to the size of the structure of the mechanical sealing device;
the inner ring side airflow outlet (6) and the outer ring side airflow outlet (7) are outlets of heat dissipation airflow, and airflow outlets are uniformly arranged on the rear end surface (3) of the mechanical sealing device along the circumferential direction;
the inner ring side air flow outlet (6) and the outer ring side air flow outlet (7) have a circular hole shape, and the diameter of the inner ring side air flow outlet (6) is as shown in FIG. 5
The diameter of the gas flow outlet (7) on the outer ring side is
The radial distance between the inner ring side airflow outlet (6) and the inner ring cylindrical surface (4) is L4, and the radial distance between the outer ring side airflow outlet (7) and the inner ring side airflow outlet (6) is L5; the inner ring side airflow outlets (6) and the outer ring side airflow outlets (7) are arranged on the rear end face (3) of the mechanical sealing device structure and are uniformly arranged in a number of 15-18 along the circumferential direction, and the specific number is determined according to the size of the mechanical sealing device structure;
the inner diameter side flow guide hole (8) and the outer diameter side flow guide hole (9) are flow guide air holes formed in the mechanical sealing device, so that the flowability of air flow is increased, and the heat dissipation contact area is increased;
the turbulent flow structure M is a gas turbulent flow structure arranged in the mechanical sealing device and aims to enable gas to enter the sealing structure to form a vortex so that the gas fully contacts the heat dissipation surface of the sealing structure to carry away more heat;
the structure forms of the turbulent flow structure M, the inner diameter side guide hole (8) and the outer diameter side guide hole (9) are shown in figure 6; the turbulent flow structures M are arranged inside the mechanical sealing device and are uniformly arranged in an amount of 15-18 in the circumferential direction, and the specific number is determined by the size of the mechanical sealing device; the turbulent flow structure M is a two-section arc structure, the radiuses of the turbulent flow structure M are R1 and R2 respectively, R1 is equal to R2, and the width of the turbulent flow structure M is L7; l6 is the wall thickness of the ring of the mechanical sealing device; the inner diameter side flow guide hole (8) and the outer diameter side flow guide hole (9) are two circular flow guide holes arranged between two arcs on the turbulent flow structure M, and the diameters of the two circular holes are respectively
And is
The turbulent flow structure M is made into two sections of circular arcs so that the entering airflow can generate vortex, and the inner diameter side guide hole (8) and the outer diameter side guide hole (9) can enable the heat dissipation airflow to flow in the mechanical sealing device structure, so that more heat is taken away;
the whole mechanical sealing device has the structural form (shown in figure 3) with the outer diameter of
An inner diameter of
An axial thickness of L1; the whole blank is formed by casting, then each turbulent flow structure and each heat dissipation air circulation hole are machined by a laser machine, and the sealed end face is subjected to precise shape treatment.
(III) advantages and effects
The beneficial effects of the invention are: (1) the heat transfer strengthening structure is arranged on the sealing ring, so that the problem that the mechanical sealing ring is deformed even the sealing end surface is cracked due to nonuniform heating is solved, and meanwhile, the heat dissipation area of the mechanical sealing ring is greatly increased after the heat transfer strengthening structure is arranged. (2) When gas enters the mechanical sealing structure body and contacts with the inner wall surface of the cavity to conduct and dissipate heat, the airflow also generates vortex flow in the sealing ring body to play a better role in convection and heat dissipation, so that the sealing ring obtains good heat exchange and cooling effects. (3) According to the principle of material mechanics, the rigidity of the shell structure is obviously superior to that of an entity structure, and the turbulence structure can play a role of reinforcing ribs and can also play a role of increasing the heat dissipation area, improving the rigidity of the sealing ring and reducing the stress deflection. (4) Compared with a solid mechanical sealing ring, the shell structure saves a part of manufacturing materials and reduces the cost of the sealing element. The structure is applied to the existing non-contact mechanical seal, the advantage of seal end face reshaping can be better exerted, the seal lubrication effect and stability are obviously enhanced, and the service life of the seal is greatly prolonged. The device has scientific structure, good manufacturability and wide popularization and application value.
Drawings
Fig. 1 is a schematic view of a conventional mechanical seal.
Fig. 2 is a schematic view of a mechanical seal device with a heat transfer enhancement structure according to the present invention.
FIG. 3 is an isometric view of a mechanical seal with a heat transfer enhancement structure according to the present invention.
Fig. 4 is a cross-sectional view of a mechanical seal device a-a with a heat transfer enhancing structure according to the present invention.
Fig. 5 is an enlarged view of the gas flow outlet of the present invention.
Fig. 6 is a cross-sectional view of a mechanical seal device B-B with a heat transfer enhancing structure according to the present invention.
FIG. 7 is a schematic view of the flow direction of the heat dissipating air flow of the present invention.
Number, code number in fig. 1 illustrate:
a front end surface (sealing surface), a rear end surface (supporting surface), an outer ring cylindrical surface and an inner ring cylindrical surface.
Number, code number in fig. 2 illustrates:
high pressure side, outer ring cylinder, inner ring cylinder, low pressure side, rear end face (bearing face).
Number, code number in fig. 3 illustrates:
Number, code number in fig. 4 illustrates:
Number, code number in fig. 5 illustrates:
5 is an airflow inlet, 6 is an inner ring side airflow outlet, 7 is an outer ring side airflow outlet,
is the diameter of the circular hole of the airflow outlet 6 at the inner ring side,
the diameter of the circular hole of the outer ring side gas flow outlet 7, L4 the radial distance of the inner ring side gas flow outlet 6 from the inner ring cylindrical surface 4, and L5 the radial distance of the inner ring side gas flow outlet 6 from the outer ring side gas flow outlet 7.
Number, code number in fig. 6 illustrates:
m is a turbulent flow structure, 8 is an inner diameter side flow guide hole, 9 is an outer diameter side flow guide hole,
the diameter of the circular hole of the outer diameter side diversion hole 9,
is an inner diameter side guideThe diameter of the round hole of the flow hole 8, L6 are the wall thickness of the mechanical sealing ring, L7 is the width of the turbulent flow structure, R1 is the radius of the outer side arc of the turbulent flow structure M, and R2 is the radius of the inner side arc of the turbulent flow structure M.
Number, code number in fig. 7 illustrates:
the arrows in the figure are indicative of the direction of flow of the heat dissipating air stream when the mechanical seal is in operation.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The structure of the embodiment of the invention is shown in fig. 1 to 7.
The invention relates to a mechanical sealing device with a heat transfer strengthening structure, which is composed of a front end surface (sealing surface) 1, an outer ring cylindrical surface 2, a rear end surface (supporting surface) 3, an inner ring cylindrical surface 4, an airflow inlet 5, an inner ring side airflow outlet 6, an outer ring side airflow outlet 7, an inner diameter side flow guide hole 8, an outer diameter side flow guide hole 9, a turbulence structure M and the like, wherein the front end surface (sealing surface), the outer ring cylindrical surface, the rear end surface (supporting surface) and the like are positioned at different positions on a ring body of the mechanical sealing device. As shown in fig. 3, are located at different positions on the structural ring of the mechanical seal. The outer diameter of the whole mechanical sealing device structure is
An inner diameter of
The mechanical seal arrangement has an axial thickness of L1. For example, as shown in fig. 4, the inner cylindrical surface 4 of the mechanical sealing device structure is provided with 15-18 airflow inlets 5, and the number of the airflow inlets 5 is determined by the size of the mechanical sealing device structure. The axial thickness of the airflow inlet 5 from the front end face 1 is L3, and the axial thickness from the rear end face 3 is L2. As shown in fig. 4 and 5, the rear end surface 3 of the mechanical sealing device is provided with inner ring airflow outlets 6 and outer ring side airflow outlets 7, the two airflow outlets are uniformly arranged on the rear end surface 3 along the circumferential direction, the number of the inner ring airflow outlets and the outer ring side airflow outlets is 15-18, and the specific number is determined by the size of the mechanical sealing device. The diameter of the circular hole of the inner ring airflow outlet 6 is
The diameter of the outer annular gas flow outlet 7 is
The radial distance between the inner ring airflow outlet 6 and the inner ring cylindrical surface 4 is L4, and the radial distance between the outer ring side airflow outlet 7 and the inner ring side airflow outlet 6 is L5.
As shown in fig. 6, the mechanical sealing device has a structure in which a turbulent flow structure M, an inner diameter side guide hole 8 and an outer diameter side guide hole 9 are formed. The turbulent flow structures M are arranged inside the mechanical sealing device and are uniformly arranged in the same direction by 15-18, and the specific number is determined by the size of the mechanical sealing device. The turbulent flow structure M is a two-section arc-shaped structure, the radius of the turbulent flow structure M is R1 and R2, R1 is equal to R2, and the width of the turbulent flow structure M is L7. L6 is the wall thickness of the ring of the mechanical sealing device, the inner diameter side diversion hole 8 and the outer diameter side diversion hole 9 are two circular diversion holes arranged between two arcs on the turbulent flow structure M, the diameters of the two circular holes are respectively
And is
The turbulent flow structure M is made into two sections of circular arcs so that the entering airflow can generate vortex, and the inner diameter side flow guide hole 8 and the outer diameter side flow guide hole 9 can enable the heat dissipation airflow to flow in the mechanical sealing device, so that more heat can be taken away. As shown in fig. 7, the arrows in the figure are schematic representations of the flow directions of the heat dissipating air streams.
The important dimensions of the specific embodiment of the invention are chosen as follows: the axial thickness L2 of the airflow inlet 5 from the rear end face (supporting face) 3, L2 is 2.5-3.5 mm; the diameter of the inner ring side gas flow outlet 6 is
3-5 mm; the turbulent flow structure M is a two-section arc structure with the radius respectivelyR1 and R2, wherein R1 is R2, R1 is 12-16 mm, width is L7, and L7 is 3-8 mm; l6 is the thickness of the ring wall of the mechanical sealing device, and L6 is 4-6 mm.
The mechanical sealing device structure can be manufactured into a mould according to a certain size and machining allowance, then a blank is formed by casting, and machining is carried out to obtain the mechanical sealing device with the heat transfer strengthening structure. When the sealing element is assembled, the airflow inlet and the airflow outlet are exposed, so that the heat dissipation airflow can circulate to achieve the expected effect. For sealing rings with different sizes, the number of the turbulent flow structures M and the wall thickness L6 of the mechanical sealing circular ring can be determined according to actual conditions.
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 (5)
1. A mechanical sealing device with a heat transfer strengthening structure is characterized in that: the mechanical sealing device consists of a front end face (1), an outer ring cylindrical surface (2), a rear end face (3), an inner ring cylindrical surface (4), an airflow inlet (5), an inner ring side airflow outlet (6), an outer ring side airflow outlet (7), an inner diameter side flow guide hole (8), an outer diameter side flow guide hole (9) and a turbulence structure M, which are all positioned at different positions on a ring body of the mechanical sealing device;
the front end face (1) is a sealing face of the mechanical sealing device;
the outer ring cylindrical surface (2) is an outer cylindrical surface of the mechanical sealing device;
the rear end face (3) is a supporting surface of the mechanical sealing device and is combined with the compensating mechanism;
the inner cylindrical surface (4) is the inner cylindrical surface of the mechanical sealing device;
the airflow inlet (5) is a rectangular hole uniformly formed in the inner annular cylindrical surface 4 of the mechanical sealing device along the circumferential direction;
the structure of the airflow inlet (5) is a rectangle, the structure sizes of the airflow inlet are L2 and L3, L2 is the axial thickness from the rear end face (3), L3 is the axial thickness from the front end face (1), and L3 is 1.25 multiplied by L2; the airflow inlets (5) are arranged on the inner ring cylindrical surface (4) of the mechanical sealing device and are uniformly distributed in an amount of 15-18 along the circumferential direction, and the specific number is determined according to the size of the structure of the mechanical sealing device;
the inner ring side airflow outlet (6) and the outer ring side airflow outlet (7) are outlets of heat dissipation airflow, and airflow outlets are uniformly arranged on the rear end surface (3) of the mechanical sealing device along the circumferential direction;
the inner ring side gas flow outlet (6) and the outer ring side gas flow outlet (7) are in the form of circular holes, and the diameter of the inner ring side gas flow outlet (6) is
The diameter of the gas flow outlet (7) on the outer ring side is
The radial distance between the inner ring side airflow outlet (6) and the inner ring cylindrical surface (4) is L4, and the radial distance between the outer ring side airflow outlet (7) and the inner ring side airflow outlet (6) is L5; the inner ring side airflow outlets (6) and the outer ring side airflow outlets (7) are arranged on the rear end face (3) of the mechanical sealing device structure and are uniformly arranged in a number of 15-18 along the circumferential direction, and the specific number is determined according to the size of the mechanical sealing device structure;
the inner diameter side flow guide hole (8) and the outer diameter side flow guide hole (9) are flow guide air holes formed in the mechanical sealing device, so that the flowability of air flow is increased, and the heat dissipation contact area is increased;
the turbulent flow structure M is a gas turbulent flow structure arranged in the mechanical sealing device and aims to enable gas to enter the sealing structure to form a vortex so that the gas fully contacts the heat dissipation surface of the sealing structure to carry away more heat;
the turbulent flow structure M is arranged inside the mechanical sealing device and is uniformly arranged in a circumferential direction by 15-18, specificallyThe number is determined by the size of the mechanical sealing device; the turbulent flow structure M is a two-section arc structure, the radiuses of the turbulent flow structure M are R1 and R2 respectively, R1 is equal to R2, and the width of the turbulent flow structure M is L7; l6 is the wall thickness of the ring of the mechanical sealing device; the inner diameter side flow guide hole (8) and the outer diameter side flow guide hole (9) are two circular flow guide holes arranged between two arcs on the turbulent flow structure M, and the diameters of the two circular holes are respectively
And is
The turbulent flow structure M is made into two sections of circular arcs so that the entering airflow can generate vortex, and the inner diameter side guide hole (8) and the outer diameter side guide hole (9) can enable the heat dissipation airflow to flow in the mechanical sealing device structure, so that more heat is taken away;
the whole mechanical sealing device has an outer diameter of
An inner diameter of
An axial thickness of L1; the whole blank is formed by casting, then each turbulent flow structure and each heat dissipation air circulation hole are machined by a laser machine, and the sealed end face is subjected to precise shape treatment.
2. The mechanical seal device with the heat transfer enhancement structure according to claim 1, wherein: the axial thickness L2 of the airflow inlet (5) from the rear end face (3) is 2.5-3.5 mm.
3. The mechanical seal device with the heat transfer enhancement structure according to claim 1, wherein: the diameter of the inner ring side gas flow outlet (6)
Is 3-5 mm.
4. The mechanical seal device with the heat transfer enhancement structure according to claim 1, wherein: the radius of the two-section arc-shaped structure turbulence structure M is R1 and R2 respectively, and R1 is equal to R2 and is 12-16 mm; the width L7 is 3-8 mm.
5. The mechanical seal device with the heat transfer enhancement structure according to claim 1, wherein: the annular wall thickness L6 of the mechanical sealing device is 4-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041662.9A CN111089172B (en) | 2020-01-15 | 2020-01-15 | Mechanical sealing device with heat transfer strengthening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041662.9A CN111089172B (en) | 2020-01-15 | 2020-01-15 | Mechanical sealing device with heat transfer strengthening structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111089172A true CN111089172A (en) | 2020-05-01 |
| CN111089172B CN111089172B (en) | 2021-09-28 |
Family
ID=70399147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010041662.9A Active CN111089172B (en) | 2020-01-15 | 2020-01-15 | Mechanical sealing device with heat transfer strengthening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111089172B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498007A (en) * | 1994-02-01 | 1996-03-12 | Durametallic Corporation | Double gas barrier seal |
| JPH09177988A (en) * | 1995-12-27 | 1997-07-11 | Koyo Seiko Co Ltd | Oil seal |
| EP0803667A1 (en) * | 1996-04-25 | 1997-10-29 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Sealing device for a Lysholm compressor |
| JP2004108250A (en) * | 2002-09-18 | 2004-04-08 | Aisin Seiki Co Ltd | Water pump |
| CN2646523Y (en) * | 2003-07-06 | 2004-10-06 | 张厚泉 | High temperature resistant dynamically sealed swivel joint |
| CN201043605Y (en) * | 2007-05-12 | 2008-04-02 | 四川慧剑石化装备有限责任公司 | Axle head sealing structure of speed reducer |
| CN101514752A (en) * | 2008-10-10 | 2009-08-26 | 江苏大学 | Shell-shaped mechanical seal ring with sector deep groove inside |
| CN105465371A (en) * | 2015-12-30 | 2016-04-06 | 南京林业大学 | Bidirectional-rotation self-pumping fluid dynamic pressure type mechanical seal |
| CN105987175A (en) * | 2016-08-05 | 2016-10-05 | 江西省科学院应用物理研究所 | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves |
| CN107061740A (en) * | 2017-04-26 | 2017-08-18 | 北京航空航天大学 | A kind of face of cylinder carries the mechanical seal structure of honeycomb shape groove |
| CN208919328U (en) * | 2018-09-28 | 2019-05-31 | 安徽安密机械密封有限公司 | A kind of inside has the shell-shaped mechanical seal ring of sector deep groove |
-
2020
- 2020-01-15 CN CN202010041662.9A patent/CN111089172B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498007A (en) * | 1994-02-01 | 1996-03-12 | Durametallic Corporation | Double gas barrier seal |
| JPH09177988A (en) * | 1995-12-27 | 1997-07-11 | Koyo Seiko Co Ltd | Oil seal |
| EP0803667A1 (en) * | 1996-04-25 | 1997-10-29 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Sealing device for a Lysholm compressor |
| JP2004108250A (en) * | 2002-09-18 | 2004-04-08 | Aisin Seiki Co Ltd | Water pump |
| CN2646523Y (en) * | 2003-07-06 | 2004-10-06 | 张厚泉 | High temperature resistant dynamically sealed swivel joint |
| CN201043605Y (en) * | 2007-05-12 | 2008-04-02 | 四川慧剑石化装备有限责任公司 | Axle head sealing structure of speed reducer |
| CN101514752A (en) * | 2008-10-10 | 2009-08-26 | 江苏大学 | Shell-shaped mechanical seal ring with sector deep groove inside |
| CN105465371A (en) * | 2015-12-30 | 2016-04-06 | 南京林业大学 | Bidirectional-rotation self-pumping fluid dynamic pressure type mechanical seal |
| CN105987175A (en) * | 2016-08-05 | 2016-10-05 | 江西省科学院应用物理研究所 | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves |
| CN107061740A (en) * | 2017-04-26 | 2017-08-18 | 北京航空航天大学 | A kind of face of cylinder carries the mechanical seal structure of honeycomb shape groove |
| CN208919328U (en) * | 2018-09-28 | 2019-05-31 | 安徽安密机械密封有限公司 | A kind of inside has the shell-shaped mechanical seal ring of sector deep groove |
Non-Patent Citations (1)
| Title |
|---|
| 王慧 等: "良好的冲洗是保证密封性能的关键", 《液压气动与密封》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111089172B (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108223799B (en) | Bidirectional rotary fluid dynamic pressure type mechanical sealing structure | |
| JPS59500680A (en) | Sealing device between moving parts | |
| CN107975600A (en) | A kind of self forcing cooling refractory machinery seals device | |
| JPH07501605A (en) | floating ring seal | |
| CN111089172B (en) | Mechanical sealing device with heat transfer strengthening structure | |
| CN105386972B (en) | Screw vacuum pump of motive seal structure | |
| WO2021129425A1 (en) | Air bearing, rotor system, and microturbine | |
| CN105987175A (en) | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves | |
| CN107061740B (en) | A kind of cylindrical surface carries the mechanical seal structure of honeycomb shape slot | |
| CN111237341A (en) | Gas thrust bearing with hybrid action of dynamic pressure and static pressure | |
| CN210318503U (en) | Mechanical sealing device | |
| CN214118558U (en) | Centrifugal air compressor with high-speed motor | |
| CN214789035U (en) | High-temperature high-pressure mechanical sealing device for composite power groove | |
| CN207539340U (en) | A kind of self forcing cooling refractory machinery seals device | |
| JP4598583B2 (en) | Steam turbine seal equipment | |
| CN111852950A (en) | Mechanical sealing device for high-temperature hot water pump | |
| CN116733837B (en) | Air dynamic pressure foil bearing, suspension centrifugal blower comprising same and processing technology | |
| CN112360983B (en) | Elastic contact type dynamic sealing structure for high-temperature and high-pressure gas or liquid | |
| CN112012931A (en) | Cooling design of pump rotor | |
| CN115199647B (en) | Static pressure air bearing facing double-rotor support | |
| CN221145310U (en) | Liquid film mechanical sealing device for aero-engine rotating machinery | |
| KR102596031B1 (en) | A Centrifugal Compressor Impeller with Backside Cavity | |
| WO2024142919A1 (en) | Sliding components | |
| CN113202929B (en) | Dry gas sealing structure with controllable end face rigidity | |
| CN214425112U (en) | Mechanical sealing device with annular cooling channel |
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 |