CN111828644A - Combined sealing device - Google Patents
Combined sealing device Download PDFInfo
- Publication number
- CN111828644A CN111828644A CN202010801483.0A CN202010801483A CN111828644A CN 111828644 A CN111828644 A CN 111828644A CN 202010801483 A CN202010801483 A CN 202010801483A CN 111828644 A CN111828644 A CN 111828644A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- sealing
- rotating shaft
- inflatable
- fabric
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 244
- 239000004744 fabric Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 35
- 238000005086 pumping Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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
- F16J15/40—Sealings between relatively-moving surfaces by means of 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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
- F16J15/22—Packing materials therefor shaped as strands, ropes, threads, ribbons, or the like
-
- 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
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a combined sealing device, which is used for shaft sealing of rotary machinery and is provided with a fabric sealing ring, a dynamic pressure pumping sealing assembly, an inflatable sealing ring and a metal sealing ring which is arranged in the inflatable sealing ring and can circumferentially stretch out and draw back; the fabric sealing ring filters solid impurities in the fluid, and the diameter of the fabric sealing ring is larger than that of the rotating shaft and can rotate along with the rotating shaft; the depth of a spiral groove of the dynamic pressure pumping sealing assembly is linearly and continuously reduced from the side of the sealing ring sheet close to the sealing auxiliary lip to the side of the sealing ring sheet close to the bearing along the track of the spiral groove; the circumferential extension of the metal sealing ring is indirectly controlled by controlling the inflation quantity of the inner cavity of the elastic inflatable sealing ring. The fabric sealing ring, the dynamic pressure pumping sealing assembly, the inflatable sealing ring and the metal sealing ring are mutually cooperated to realize stable sealing of pressure fluid in the cavity, particularly pressure fluctuation is generated in the cavity, and when the instantaneous pressure is too large, the sealing adaptability is strong, and the service life of the sealing device is long.
Description
Technical Field
The invention relates to the field of sealing, in particular to a combined sealing device for shaft sealing of rotary machinery.
Background
The lip-shaped sealing ring of the rotating shaft is used for sealing pressure fluid in a cavity, has the advantages of small volume, convenience in installation, good sealing effect, good adaptability and the like, and is widely used on internal combustion engines, machine tools, hydraulic systems and pump equipment.
Along with the rotation of the rotating shaft, when the equipment is in a working state, pressure fluctuation can be generated by pressure fluid in the cavity, the pressure difference between high pressure and low pressure of instantaneous pressure is large, and when the instantaneous pressure is too large, the stability of a sealing system can be damaged, so that leakage is caused; solid particle impurities are inevitably contained in the fluid in the cavity, the sealing contact surfaces are abraded, the service life is influenced, a leakage gap is generated between the sealing contact surfaces, and the sealing effect is damaged; the static sealing problem of the equipment in the non-operating state when the rotating shaft stops rotating is not well solved in the prior art; the sealing state cannot be adjusted adaptively along with the change of working conditions, and the sealing adaptability is insufficient; these are all technical problems which need to be solved urgently in the field.
Disclosure of Invention
The present invention is directed to a combined sealing device to solve the above problems in the prior art. In order to achieve the purpose, the invention provides the following technical scheme:
a composite sealing device for sealing pressurized fluid on a machine having a rotating shaft, an outer housing and a bearing mounted in the outer housing, wherein the outer housing has a center rib; a cavity is formed in the left end of the outer shell and used for containing pressure fluid; the right-hand member sealing connection of shell body has the end cover, the right-hand member sealing connection of end cover has the clamp plate.
A mounting groove is formed in the part, close to the rotating shaft, of the middle rib in the radial direction, and a fabric sealing ring is arranged in the mounting groove; the inner circumference diameter of the fabric sealing ring is 1.1-1.35 times of the diameter of the rotating shaft, and the outer diameter of the fabric sealing ring is 0.8-0.95 times of the diameter of the circumferential surface of the mounting groove; when the rotating shaft rotates, a part of the inner circumferential surface of the fabric sealing ring is in contact with the outer circumferential surface of the rotating shaft, the fabric sealing ring is driven by the rotating shaft to rotate, and the rotating speed of the fabric sealing ring is smaller than the rotating speed of the rotating shaft.
The dynamic pressure pumping sealing assembly is provided with a sealing auxiliary lip, a sealing main lip, a metal keel and a locking spring, wherein the sealing auxiliary lip and the sealing main lip are fixed on the sealing main lip, and a spiral groove is processed on the outer circumferential surface of the rotating shaft corresponding to the sealing ring for pumping pressure fluid back to the cavity; wherein the depth of the spiral groove is linearly and continuously reduced from the side of the sealing ring sheet close to the sealing auxiliary lip to the side of the sealing ring sheet close to the bearing in the track direction along the spiral groove.
The inflatable sealing ring is L-shaped, static sealing with the pressure plate is realized in the radial direction, the inflatable sealing ring is connected with the air inlet and exhaust control device through an air pipe, the amount of air in the inner cavity of the inflatable sealing ring is controlled through the air inlet and exhaust control device, the expansion degree of the inflatable sealing ring is further controlled, and the sealing pressure of the inflatable sealing ring in the axial direction and the radial direction is further controlled; the axial inner circumferential part of the inflatable sealing ring is provided with a groove, and a metal sealing ring which can stretch out and draw back in the circumferential direction is arranged in the groove; the metal sealing ring can stretch out and draw back in the circumferential direction along with the change of the expansion degree of the inflatable sealing ring, and the tail end of the metal sealing ring is partially overlapped in the circumferential direction.
The metal sealing ring is made of an elastic alloy material which has good wear resistance, small friction coefficient and difficult thermal bulging.
Under the non-working state that the rotating shaft is static, the sealing ring sheet is jointed with the circumferential surface of the rotating shaft by the locking force of the locking spring to realize static sealing; when the rotating shaft rotates, the sealing ring sheet is subjected to the action of fluid dynamic pressure to realize non-contact with the circumferential surface of the rotating shaft, fluid film sealing is formed between the sealing ring sheet and the circumferential surface of the rotating shaft, and fluid is pumped back to the cavity through the spiral groove.
The air inlet and outlet control device is connected to a pressure air source. One part of the metal sealing ring in the radial thickness direction is arranged in the groove of the inflatable sealing ring, the other part of the metal sealing ring is arranged outside the groove of the inflatable sealing ring, and when the rotating shaft rotates, the metal sealing ring cannot rotate along with the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. by utilizing the fabric structure of the fabric sealing ring, solid impurities in the fluid in the cavity can be filtered, and the fabric sealing ring has the function of reducing pressure, so that the sealing pressure of a subsequent sealing element is reduced; through the size design of the fabric sealing ring, when the rotating shaft rotates, only one part of the inner circumferential surface of the fabric sealing ring is in contact with the outer circumferential surface of the rotating shaft, and the fabric sealing ring can rotate at a certain speed under the driving of the rotating shaft, so that the abrasion to the fabric sealing ring is reduced to a great extent, and the service life is ensured.
2. The fluid is further sealed by utilizing the side of the sealing auxiliary lip, the sealing pressure is reduced, and the leakage loss of the fluid is reduced by utilizing the dynamic pressure sealing and pumping action of the sealing ring sheet and the rotating shaft; the depth of the spiral groove is linearly and continuously reduced from the side of the sealing ring sheet close to the sealing auxiliary lip to the side of the sealing ring sheet close to the bearing along the track of the spiral groove; the sum of the cross-sectional areas of the thread grooves can be reduced, the rigidity and stability of the dynamic pressure sealing film are further improved, and the capacity of pumping fluid is improved.
3. The combination of the L-shaped elastic inflatable sealing ring and the metal sealing ring realizes axial and radial bidirectional sealing; the inner cavity of the elastic inflatable sealing ring can be expanded to further achieve the strength of radial sealing by controlling the inflation quantity of the inner cavity of the elastic inflatable sealing ring according to the pressure of fluid in the cavity and the rotating speed of the rotating shaft, and the circumferential extension and contraction of the metal sealing ring and the force of the metal sealing ring clinging to the rotating shaft are indirectly controlled, so that the strength of axial sealing is guaranteed; and the elastic inflatable sealing ring can also realize static sealing in a non-working state of static rotation shaft and dynamic sealing in a working state of rotation shaft rotation, so that the fluid in the cavity is not leaked, and external impurities do not enter the cavity.
The fabric sealing ring, the dynamic pressure pumping sealing assembly, the inflatable sealing ring and the metal sealing ring are mutually cooperated to jointly realize the sealing of pressure fluid in the cavity, the stability of the sealing performance is ensured, pressure fluctuation is generated in different working conditions, particularly in the cavity, the adaptability of sealing is strong when the instantaneous pressure is overlarge, and the service life of the sealing device is long.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced as follows:
FIG. 1 is a schematic view of the assembly of the composite seal of the present invention;
fig. 2 shows the positional relationship of the fabric seal ring 2 of the composite sealing device of the present invention with respect to the relative movement of the rotary shaft 1.
Fig. 3 is a schematic view of the overlapping portion of the ends of the circumferentially telescoping metal seal ring 13.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A combined sealing device for sealing pressure fluid on a machine having a rotating shaft, as shown in fig. 1, having a rotating shaft 1, an outer housing 3 and a bearing 14 installed in the outer housing 3, wherein the outer housing 3 has a center rib 4; a cavity is formed in the left end of the outer shell 3 and used for containing pressure fluid; the right-hand member sealing connection of shell body 3 has end cover 8, the right-hand member sealing connection of end cover 8 has clamp plate 9.
A mounting groove is formed in the part, close to the rotating shaft 1, of the middle rib 4 in the radial direction, and a fabric sealing ring 2 is arranged in the mounting groove; the inner circumference diameter of the fabric sealing ring 2 is 1.1-1.35 times of the diameter of the rotating shaft 1, and the outer diameter of the fabric sealing ring 2 is 0.8-0.95 times of the diameter of the circumferential surface of the mounting groove; when the rotating shaft 1 rotates, a part of the inner circumferential surface of the fabric seal ring 2 contacts with the outer circumferential surface of the rotating shaft 1 (as shown in fig. 2), and the fabric seal ring 2 is driven by the rotating shaft 1 to rotate, and the rotating speed of the fabric seal ring 2 is less than the rotating speed of the rotating shaft 1.
The dynamic pressure pumping sealing device is provided with a dynamic pressure pumping sealing component 5, the outer circumferential surface of the dynamic pressure pumping sealing component 5 is fixed with the inner circumferential wall surface of the outer shell 3 in a sealing way, the dynamic pressure pumping sealing component 5 is provided with a sealing auxiliary lip 18, a main sealing lip, a metal keel 6 and a locking spring 15, a sealing ring sheet 17 made of polytetrafluoroethylene is fixed on the main sealing lip, and a spiral groove 16 is processed on the outer circumferential surface of the rotating shaft 1 corresponding to the sealing ring sheet 17 and used for pumping pressure fluid back to the cavity; wherein the depth of the spiral groove 16 is linearly and continuously reduced from the side of the sealing ring sheet 17 close to the sealing auxiliary lip 18 to the side of the sealing ring sheet 17 close to the bearing in the track direction along the spiral groove 16.
The inflatable sealing ring 12 is elastic, the inflatable sealing ring 12 is L-shaped, the inflatable sealing ring 12 is in static sealing with the pressure plate 9 in the radial direction, the inflatable sealing ring 12 is connected with the air inlet and exhaust control device 10 through an air pipe, the air quantity of the inner cavity of the inflatable sealing ring 12 is controlled through the air inlet and exhaust control device 10, the expansion degree of the inflatable sealing ring 12 is further controlled, and the sealing pressure of the inflatable sealing ring 12 in the axial direction and the radial direction is further controlled; the axial inner circumferential part of the inflatable sealing ring 12 is provided with a groove, and a metal sealing ring 13 which can stretch in the circumferential direction is arranged in the groove; the metal sealing ring 13 can expand and contract in the circumferential direction along with the change of the expansion degree of the inflatable sealing ring 12, and the tail ends of the metal sealing ring 13 are partially overlapped in the circumferential direction (as shown in figure 3).
The metal sealing ring 13 is made of an elastic alloy material which has good wear resistance, small friction coefficient and difficult thermal bulging.
In the non-working state that the rotating shaft 1 is static, the sealing ring sheet 17 is jointed with the circumferential surface of the rotating shaft by the locking force of the locking spring 15 to realize static sealing; when the rotating shaft 1 rotates, the sealing ring sheet 17 is subjected to the action of fluid dynamic pressure to realize non-contact with the circumferential surface of the rotating shaft, a fluid film seal is formed between the sealing ring sheet and the circumferential surface of the rotating shaft 1, and fluid is pumped back to the cavity through the spiral groove 16. The inlet and outlet control device 10 is connected to a source of pressurized air (not shown).
One part of the metal sealing ring 13 in the radial thickness direction is arranged in the groove of the inflatable sealing ring 12, the other part of the metal sealing ring is arranged outside the groove of the inflatable sealing ring, and when the rotating shaft 1 rotates, the metal sealing ring cannot rotate along with the rotating shaft 1.
The fabric structure of the fabric sealing ring is utilized, so that solid impurities in the fluid in the cavity can be filtered, the effect of reducing pressure is achieved, and the sealing pressure of a subsequent sealing element is reduced; through the size design of the fabric sealing ring, when the rotating shaft rotates, only one part of the inner circumferential surface of the fabric sealing ring is in contact with the outer circumferential surface of the rotating shaft, and the fabric sealing ring can rotate at a certain speed under the driving of the rotating shaft, so that the abrasion to the fabric sealing ring is reduced to a great extent, and the service life is ensured.
According to the invention, the fluid is further sealed by utilizing the side of the sealing auxiliary lip, the sealing pressure is reduced, and the leakage loss of the fluid is reduced by utilizing the dynamic pressure sealing and pumping action of the sealing ring sheet and the rotating shaft; the depth of the spiral groove is linearly and continuously reduced from the side of the sealing ring sheet close to the sealing auxiliary lip to the side of the sealing ring sheet close to the bearing along the track of the spiral groove; the sum of the cross-sectional areas of the thread grooves can be reduced, the rigidity and stability of the dynamic pressure sealing film are further improved, and the capacity of pumping fluid is improved.
The invention realizes axial and radial bidirectional sealing by using the combination of the L-shaped elastic inflatable sealing ring and the metal sealing ring; the inner cavity of the elastic inflatable sealing ring can be expanded to further achieve the strength of radial sealing by controlling the inflation quantity of the inner cavity of the elastic inflatable sealing ring according to the pressure of fluid in the cavity and the rotating speed of the rotating shaft, and the circumferential extension and contraction of the metal sealing ring and the force of the metal sealing ring clinging to the rotating shaft are indirectly controlled, so that the strength of axial sealing is guaranteed; and the elastic inflatable sealing ring can also realize static sealing in a non-working state of static rotation shaft and dynamic sealing in a working state of rotation shaft rotation, so that the fluid in the cavity is not leaked, and external impurities do not enter the cavity.
And the fabric sealing ring, the dynamic pressure pumping sealing assembly, the inflatable sealing ring and the metal sealing ring are mutually cooperated to jointly realize the sealing of pressure fluid in the cavity, the stability of the sealing performance is ensured, the pressure fluctuation is generated in different working conditions, particularly in the cavity, the sealing adaptability is strong when the instantaneous pressure is overlarge, and the service life of the sealing device is long.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A combined sealing device for sealing pressure fluid on a mechanical device with a rotating shaft (1), with an outer housing (3) and a bearing (14) mounted in the outer housing (3), wherein the outer housing (3) has a central rib (4); a cavity is formed in the left end of the outer shell (3) and used for containing pressure fluid; the right end of the outer shell (3) is hermetically connected with an end cover (8), and the right end of the end cover (8) is hermetically connected with a pressing plate (9);
the method is characterized in that:
a mounting groove is formed in the part, close to the rotating shaft (1), of the middle rib (4) in the radial direction, and a fabric sealing ring (2) is arranged in the mounting groove; the diameter of the inner circumference of the fabric sealing ring (2) is 1.1-1.35 times of the diameter of the rotating shaft (1), and the outer diameter of the fabric sealing ring (2) is 0.8-0.95 times of the diameter of the circumferential surface of the mounting groove; when the rotating shaft (1) rotates, a part of the inner circumferential surface of the fabric sealing ring (2) is in contact with the outer circumferential surface of the rotating shaft (1), the fabric sealing ring (2) is driven by the rotating shaft (1) to rotate, and the rotating speed of the fabric sealing ring (2) is less than the rotating speed of the rotating shaft (1);
the dynamic pressure pumping sealing device is provided with a dynamic pressure pumping sealing assembly (5), the outer circular surface of the dynamic pressure pumping sealing assembly (5) is fixed with the inner circumferential wall surface of the outer shell (3) in a sealing mode, the dynamic pressure pumping sealing assembly (5) is provided with a sealing auxiliary lip (18), a main sealing lip, a metal keel (6) and a locking spring (15), a sealing ring sheet (17) made of polytetrafluoroethylene is fixed on the main sealing lip, and a spiral groove (16) is machined in the outer circular surface, corresponding to the sealing ring sheet (17), of the rotating shaft (1) and used for pumping pressure fluid back to the cavity; wherein the depth of the spiral groove (16) is linearly and continuously reduced from the side of the sealing ring sheet (17) close to the sealing auxiliary lip (18) to the side of the sealing ring sheet (17) close to the bearing in the track direction along the spiral groove (16);
the sealing device is characterized by comprising an elastic inflatable sealing ring (12), wherein the inflatable sealing ring (12) is L-shaped, the inflatable sealing ring (12) is in static sealing with the pressing plate (9) in the radial direction, the inflatable sealing ring (12) is connected with an air inlet and exhaust control device (10) through an air pipe, the amount of air in the inner cavity of the inflatable sealing ring (12) is controlled through the air inlet and exhaust control device (10), the expansion degree of the inflatable sealing ring (12) is further controlled, and the sealing pressure of the inflatable sealing ring (12) in the axial direction and the radial direction is further controlled; the axial inner circumferential part of the inflatable sealing ring (12) is provided with a groove, and a metal sealing ring (13) which can stretch in the circumferential direction is arranged in the groove; the metal sealing ring (13) can stretch out and draw back in the circumferential direction along with the change of the expansion degree of the inflatable sealing ring (12), and the tail ends of the metal sealing ring (13) are partially overlapped in the circumferential direction.
2. A unit seal according to claim 1, wherein said metal seal ring (13) is an elastic alloy material having good wear resistance, a small coefficient of friction resistance and being less susceptible to thermal bulging.
3. The combined sealing device according to claim 1, characterized in that in the non-working state of the rotating shaft (1) at rest, the sealing ring sheet (17) is jointed with the circumferential surface of the rotating shaft by the locking force of the locking spring (15) to realize static sealing; when the rotating shaft (1) rotates, the sealing ring sheet (17) is subjected to the action of fluid dynamic pressure to realize non-contact with the circumferential surface of the rotating shaft, a fluid film seal is formed between the sealing ring sheet and the circumferential surface of the rotating shaft (1), and fluid is pumped back to the cavity through the spiral groove (16).
4. A unit sealing device according to claim 1, characterised in that the admission and exhaust control device (10) is connected to a source of pressurised air.
5. A combined sealing device according to claim 1, characterised in that the metal sealing ring (13) is arranged in the groove of the inflatable sealing ring (12) in the radial thickness direction, and is arranged outside the groove of the inflatable sealing ring, and when the rotating shaft (1) rotates, the metal sealing ring cannot rotate along with the rotating shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801483.0A CN111828644B (en) | 2020-08-11 | 2020-08-11 | Combined sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801483.0A CN111828644B (en) | 2020-08-11 | 2020-08-11 | Combined sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111828644A true CN111828644A (en) | 2020-10-27 |
| CN111828644B CN111828644B (en) | 2024-03-12 |
Family
ID=72919265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010801483.0A Active CN111828644B (en) | 2020-08-11 | 2020-08-11 | Combined sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111828644B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217975A (en) * | 2022-07-22 | 2022-10-21 | 西安近代化学研究所 | Sealing device for converting axial force into radial extrusion fitting force |
| CN118482029A (en) * | 2024-07-16 | 2024-08-13 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| CN105114625A (en) * | 2015-08-28 | 2015-12-02 | 重庆市腾瀚工贸有限公司 | Middle shield and tail shield connecting structure |
| CN205277699U (en) * | 2015-12-31 | 2016-06-01 | 北京金风科创风电设备有限公司 | Wind generating set's bearing seal filtration and aerogenerator |
| CN106763778A (en) * | 2016-12-12 | 2017-05-31 | 昆明理工大学 | A kind of upstream pumping mechanical seal ring with multiple coil groove |
| CN106812947A (en) * | 2017-02-14 | 2017-06-09 | 四川日机密封件股份有限公司 | The non-contacting mechanical seal ring of combined fluid dynamic pressure groove |
| CN107477181A (en) * | 2017-07-31 | 2017-12-15 | 浙江大学 | A kind of underwater sealing structure |
| CN208138488U (en) * | 2018-05-04 | 2018-11-23 | 辽宁工业大学 | A kind of reaction kettle stuffing seal |
| CN208364787U (en) * | 2018-05-30 | 2019-01-11 | 顺气压缩机技术（苏州）有限公司 | A kind of helical-lobe compressor axle sealing structure |
| CN109578590A (en) * | 2018-12-28 | 2019-04-05 | 洛普兰机械设备(宁波)有限公司 | A kind of hydraulic propeller axis mechanical seal |
-
2020
- 2020-08-11 CN CN202010801483.0A patent/CN111828644B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1364987A (en) * | 2001-01-18 | 2002-08-21 | 王玉明 | Spiral groove end sealer capable of being rotated in both directions |
| CN105114625A (en) * | 2015-08-28 | 2015-12-02 | 重庆市腾瀚工贸有限公司 | Middle shield and tail shield connecting structure |
| CN205277699U (en) * | 2015-12-31 | 2016-06-01 | 北京金风科创风电设备有限公司 | Wind generating set's bearing seal filtration and aerogenerator |
| CN106763778A (en) * | 2016-12-12 | 2017-05-31 | 昆明理工大学 | A kind of upstream pumping mechanical seal ring with multiple coil groove |
| CN106812947A (en) * | 2017-02-14 | 2017-06-09 | 四川日机密封件股份有限公司 | The non-contacting mechanical seal ring of combined fluid dynamic pressure groove |
| CN107477181A (en) * | 2017-07-31 | 2017-12-15 | 浙江大学 | A kind of underwater sealing structure |
| CN208138488U (en) * | 2018-05-04 | 2018-11-23 | 辽宁工业大学 | A kind of reaction kettle stuffing seal |
| CN208364787U (en) * | 2018-05-30 | 2019-01-11 | 顺气压缩机技术（苏州）有限公司 | A kind of helical-lobe compressor axle sealing structure |
| CN109578590A (en) * | 2018-12-28 | 2019-04-05 | 洛普兰机械设备(宁波)有限公司 | A kind of hydraulic propeller axis mechanical seal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217975A (en) * | 2022-07-22 | 2022-10-21 | 西安近代化学研究所 | Sealing device for converting axial force into radial extrusion fitting force |
| CN115217975B (en) * | 2022-07-22 | 2024-05-10 | 西安近代化学研究所 | Sealing device for converting axial force into radial extrusion bonding force |
| CN118482029A (en) * | 2024-07-16 | 2024-08-13 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
| CN118482029B (en) * | 2024-07-16 | 2024-09-17 | 浙江镕达永能压缩机有限公司 | Dynamic pressure spiral composite sealing structure of vapor compression machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111828644B (en) | 2024-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201050598Y (en) | Mechanical seal | |
| CN111828644A (en) | Combined sealing device | |
| WO2016059883A1 (en) | Sealing device | |
| CN111828640A (en) | Sealing method | |
| EP2678588B1 (en) | Axial piston pump with pistons having metallic sealing rings | |
| CN209671613U (en) | Dynamic compensation type seal circle | |
| KR102336893B1 (en) | High-pressure rotary seal-plug assembly with expandable continuous ring | |
| CN216429929U (en) | Combined floating packing sealing structure of melt discharging gear pump | |
| CN114321389B (en) | Balance type piston ring sealing device | |
| CN211599006U (en) | Cooling water pump for nuclear power equipment | |
| CN104343986A (en) | Sealing assembly | |
| CN211082364U (en) | Sealing ring structure of equipment cooling water pump for nuclear power | |
| CN111089000B (en) | Self-adaptive high-durability floating seal structure suitable for extreme conditions | |
| US4799693A (en) | Face seals with liquid pulsation pumping feature | |
| CN100362268C (en) | Back pressure type high pressure shaft seal | |
| CN217603352U (en) | High-speed fluid dynamic pressure sealing structure for new energy vehicle | |
| CN220646282U (en) | Centrifugal slurry pump rotating shaft mechanical seal with sand accumulation preventing structure | |
| CN216381957U (en) | Mechanical sealing structure for pump placed in liquid environment | |
| CN218408509U (en) | Sealing device of aviation motor | |
| CN218266034U (en) | Sealing structure for supercharger | |
| CN215170215U (en) | Spiral sealing structure for turbocharger | |
| CN216975554U (en) | Rotating mechanical equipment and vehicle | |
| CN218094221U (en) | Three-stage dry gas sealing structure of high-pressure compressor of hydropower station | |
| CN114838135B (en) | Piston ring sealing device | |
| CN220248685U (en) | Floating type sealing end cover for sliding bearing |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.7 Tianyun Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610000 Applicant after: Guoneng Daduhe maintenance and installation Co.,Ltd. Address before: No.7 Tianyun Road, high tech Zone, Chengdu, Sichuan 610000 Applicant before: GUODIAN DADUHE MAINTENANCE & INSTALLATION Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |