CN1363791A - Sealed device for drive-shaft - Google Patents
Sealed device for drive-shaft Download PDFInfo
- Publication number
- CN1363791A CN1363791A CN01133957A CN01133957A CN1363791A CN 1363791 A CN1363791 A CN 1363791A CN 01133957 A CN01133957 A CN 01133957A CN 01133957 A CN01133957 A CN 01133957A CN 1363791 A CN1363791 A CN 1363791A
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- seal arrangement
- zone
- internal axle
- oil
- 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
- 239000004519 grease Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 231100001261 hazardous Toxicity 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
-
- 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
- F16J15/002—Sealings comprising at least two sealings in succession
- F16J15/004—Sealings comprising at least two sealings in succession forming of recuperation chamber for the 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
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Sealing Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Gasket Seals (AREA)
Abstract
The sealing device has a inner bush guided on a propeller drive shafts for sealing the propeller drive shafts.The inner bush is guided in an outer bush and has an inside diameter that is greater than an outside diameter of the drive shaft to be guided. The inner bush has at least one oil or grease channel which is provided with at least one discharge opening in the vicinity of an inner side of the inner bush and can be connected to an oil or grease transport device.
Description
Technical field
The present invention relates to a kind of sealed device for drive-shaft, it has an internal axle sleeve that is enclosed within on the transmission shaft, and it is imported in the external axle sleeve, and internal axle sleeve has an inner diameter, and its size is greater than the transmission shaft outer diameter size that is guided.
Known technology
Such device is applied to, and the transmission shaft of assurance ship passes in the ship wall zone enough sealings.Typical form of implementation is external axle sleeve and the bolt tightening of ship wall; The seal element of ring-type in the external axle sleeve clamping, and these seal elements are sealing the slit between external axle sleeve and the internal axle sleeve, and internal axle sleeve is with movable possibility with respect to outer shaft simultaneously.Internal axle sleeve has a flange that is fixed on the ship propeller.
Generally between internal axle sleeve and transmission shaft, exist a narrow circumferential weld crack.Carrying out underwater repair when work especially,, and causing crevice corrosion along with the process seawater that unloads internal axle sleeve from transmission shaft and load onto is again again poured into the gap area between internal axle sleeve and the transmission shaft.Up to the present, also do not know effectively to prevent the method for this crevice corrosion.Internal axle sleeve can not be aimed at transmission shaft under water well in addition.
Summary of the invention
The objective of the invention is to make a kind of sealed device for drive-shaft of the above-mentioned type, its can 100% reaches and prevents to corrode and might carry out the correction of internal axle sleeve under water.
The objective of the invention is to have at least a pipeline to realize by internal axle sleeve, regulation has at least an outflow opening can be connected with oil or grease feedway with pipeline in the inner side edge zone of internal axle sleeve.
By above-mentioned pipeline setting, can oil or grease be transported to gap area neutralization between transmission shaft and the internal axle sleeve in case of necessity by water or the ponding of grease pressure in the zone, annulus by oil or grease feedway.Because circumferential weld is small-sized, oil and grease stop seawater to be poured in the slit again for a long time.
Want the hazardous medium between pressure internal axle sleeve and the transmission shaft, regulation in principle, the outflow opening of oil or grease duct must be positioned in the zone of internal axle sleeve, and internal axle sleeve is placed on the position of ship propeller cavitation dorsad.
The position of the outflow opening of regulation oil or grease duct is in a zone of internal axle sleeve among the embodiment of a replacement of the present invention, and internal axle sleeve is arranged on the position of ship propeller cavitation dorsad.
If oil or grease duct are placed in the zone line of internal axle sleeve along the direction of major axis, then can accomplish hazardous medium from two side pressures row.
If internal axle sleeve has an inner groovy in regulation on the inner side edge of transmission shaft, it is the boundary with dividing plate radially, then by improving the contact condition with the pressure medium, reaches best pressure effect.
If the shape of inner groovy is corresponding with the cylinder baffle form, then reach the uniform distribution of oil or grease.
Pressure element of clamping at least in the inner groovy zone can utilize effective frizing process further to improve the pressure effect.
In the embodiment that the present invention has realized, the pressure element has a ring structure, thereby its structure is just simple especially.
If in the inner groovy zone, settle two pressure elements, then in two end edge regions, can support internal axle sleeve well.
In order to improve the correction situation of seal action and axle sleeve and axle, the suggestion contraction place has a pressure element at least, and it adapts with respect to the gradient of major axis and the gradient of inner groovy prism.
At least in a zone in the dividing plate radially, settle a Sealing, can stop like this between internal axle sleeve and transmission shaft that the medium of pressure uncontrolledly flows out the zone.
Among the embodiment that the present invention has realized, Sealing is made of O shape ring, thereby price is low especially.
If Sealing constitutes the flat pilot tape, then can reach planar support.
If the pressure element has a Sealing at least,, also can make pressure hazardous medium process reach very high stability even machining error occurs.
If all have two Sealings at the opposing side of pressure element, just can improve seal action.
In a typical embodiment, internal axle sleeve is fixed on the ship propeller cavitation.
Brief description
Schematically illustrate form of implementation of the present invention in the accompanying drawings.In the accompanying drawing:
Fig. 1 is the principle schematic that the transmission shaft of ship passes the outboard wall;
Fig. 2 is each parts enlarged diagram of II position among Fig. 1;
Fig. 3 is the internal axle sleeve part schematic representation longitudinally that has a transmission shaft, establishes one along the transportable pressure element in the slit between internal axle sleeve and the transmission shaft in internal axle sleeve;
Fig. 4 is similar with Fig. 3, has in internal axle sleeve inside through the oil of change or the schematic representation of grease duct structure;
Fig. 5 is a kind of schematic representation of form of implementation of replacement, and two different pressure elements are wherein arranged;
Fig. 6 is the schematic representation of similar form of implementation in Fig. 5, wherein the regulation have the tape guide inclined-plane the pressure element and
Fig. 7 is the schematic representation of similar form of implementation in Fig. 6, wherein has the pressure element of distortion.
Description of preferred embodiments
According to the form of implementation in Fig. 1, a transmission shaft 1 passes an outboard wall 2.Inner room 3 zones as one, a gripper sleeve 4 guides transmission shaft 1 hermetically.The outer side 5 of wall 2 is arranged an external axle sleeve 6 overboard, and it combines regularly with the outboard wall.
An internal axle sleeve 7 in the internal sleeve of external axle sleeve 6, it is clamped on the propeller cavitation 8 of ship.Internal axle sleeve 7 is contained on the outer sector 9 of transmission shaft 1, and it passes the outside of outboard wall 2 to it.
Fig. 2 is the enlarged diagram of each parts of II position among Fig. 1.As can be seen from FIG., a plurality of seal elements 10 of external axle sleeve 6 clampings, they closely compress internal axle sleeve 7.Between internal axle sleeve 7 that rotates with transmission shaft 1 and fixed at the same time external axle sleeve 6, reach good seal action like this.From Fig. 2, can see in addition, between transmission shaft 1 and internal axle sleeve 7, exist a slit 11.
According to the form of implementation among Fig. 3, regulation internal axle sleeve 7 is having an inner groovy 13 in the zone of transmission shaft 1.Inner groovy 13 on long axis direction so that radially dividing plate 15 and an outer radial dividing plate 16 are the boundary in one.Exist an annulus between interior radially dividing plate 15 and transmission shaft 1, situation is corresponding in the size in slit and the prior art.The spacing between dividing plate 15 and the transmission shaft 1 radially in spacing between outer radial dividing plate 16 and transmission shaft 1 is greater than on the contrary.
Extending at least one oil or grease duct 17 by internal axle sleeve 7, on the oil under it can be connected or the unshowned connecting tube of grease feedway.Oil or grease duct 17 regulations have an outflow opening 18 of arranging towards transmission shaft 1 direction.When oil or grease conveyor running, oil or grease are transported to outflow opening 18 by oil or grease duct, and the ponding that exists in 11 zones, annulus of pressure.
If in the zone of inner groovy 11, along long axis direction 14 movably clamping a pressure element 19, then can strengthen, the more important thing is the ponding of pressure equably in 11 zones, circumferential weld crack.Ad hoc proposal, with pressure element 19 be designed to the annular and be close on the transmission shaft 1.
Fig. 3 is illustrated in the pressure element 19 under the basic status, and wherein arranging has a little spacing between pressure element 19 and the outflow opening 18.In this embodiment, oil or grease duct 17 are positioned in the zone of mounting flange 20 of internal axle sleeve 7, so the position of outflow opening 18 is relatively near interior radially dividing plate 15.In radially dividing plate 15 regulation have one extend in the Sealing 21 between dividing plate 15 and the transmission shaft 1 radially.Pressure element 19 is not only in the zone on transmission shaft 1 surface, and has Sealing 22 in the zone on the surface of internal axle sleeve 7 inner side surfaces 12, and Sealing 22 can constitute as O shape and encircles.
Shown in form of implementation in, along longitudinal axis (14) direction, in the zone of the front and back ends of pressure element 19, on two sides of pressure element 19, Sealing 22 is installed all, therefore 4 Sealing 22 main compositions 4 corners on the rectangular cross section.
In Fig. 3 except the basic status position of the pressure element 9 represented with solid line, the position location of pressure element 19 after closing closed procedure that dots in addition.By with oil or grease extruding pressure element 19 radially dividing plate 16 and whole ponding of existing outward, these moisture are present in the zone of annulus 11 and in the inside groove zone, and it flows out by the spacing between outer radial dividing plate 16 and the transmission shaft 1.
Fig. 4 represents a form of implementation through changing, and the oil or the grease duct 17 that wherein have outflow opening 18 are placed in the zone of outer radial dividing plate 16.In this embodiment, the spacing between outer radial dividing plate 16 and the transmission shaft 1 is less than the spacing between interior radially dividing plate 15 and the transmission shaft 1.In interior radially area of diaphragm 15, do not have Sealing, but between outer radial dividing plate 16 and transmission shaft 1, be provided with sealing together 23.The technical functionality of this structure is similar to the form of implementation of pressing Fig. 2, and just the moving direction of pressure element 19 is opposite.
Fig. 5 represents a kind of form of implementation, and the oil or the grease duct 17 that wherein have outflow opening 18 flow in the inner groovy 13 along longitudinal axis 14 at the zone line of internal axle sleeve 7.Wherein be provided with two pressure elements 19, they are placed in original state apart from outflow opening 18 a little spacing place, when oil or grease bump, is moving on the direction of dividing plate 15,16 radially by the oil that flows into or grease.By using two pressure elements 19, internal axle sleeve 7 relatively is supported on the transmission shaft 10 radially in the zone of dividing plate 15,16 at two, and can not use independent Sealing in the zone of dividing plate 15,16 radially.
Fig. 6 represents a similar form of implementation in Fig. 5.Pressure element 19 has conical region on the end limit of outflow opening 18 dorsad, corresponding therewith, the inner side edge 12 in the zone of inner groovy 13 also has a gradient.Pressure part by wedge shape causes the relative tensioning mutually of internal axle sleeve 7, pressure element 19 and transmission shaft mobile on dividing plate 15,16 directions radially, can make axle sleeve reach better rectification like this.In this form of implementation, the Sealing 22 of pressure part 19 is positioned in the zone line of the pressure element 19 of outflow opening (18).
Fig. 7 represents a form of implementation to another change of form of implementation among Fig. 6, wherein constitutes two short pressure elements 19 on long axis direction.The conical region 24 of pressure element 19 and to the prism regulation of these corresponding inner groovy 13 end edge regions than bigger gradient being arranged by the form of implementation among Fig. 6.Because this big gradient can be without Sealing 22 in the pressure element area, because the pin key effect that in conical region 24 and prism 25 zones, occurs, not only cause internal axle sleeve 7 with respect to the effective seal action between the transmission shaft 1, and reach between the two and align better.
Pressure element (19) herein also can be flexible, and as constituting the Pu-ring, regulation has projection 26,27 to proofread and correct and to brake the pressure element in inner groovy 13.
Claims (16)
1. transmission shaft seal, it has the internal axle sleeve of a guiding transmission shaft, it is imported into an external axle sleeve neutralization has an inner diameter, its inner diameter is greater than the outer diameter of the transmission shaft of guiding, it is characterized in that, internal axle sleeve (7) has oil or grease duct (17) at least, and this pipeline has a tap hole (18) at least in inner side edge (12) zone of internal axle sleeve (7), and it can be connected on transferring oil or the grease device.
2. according to the seal arrangement of claim 1, it is characterized in that the outflow opening (18) of oil or grease duct (17) is positioned in the zone of an internal axle sleeve (7), this oil and grease duct (17) are provided with towards ship propeller (8).
3. according to the seal arrangement of claim 1, it is characterized in that the outflow opening (18) of oil or grease duct (17) is positioned in the zone of an internal axle sleeve (7), this oil and grease duct (17) ship propeller (8) dorsad are provided with.
4. according to the seal arrangement of claim 1, it is characterized in that the outflow opening (18) of oil or grease duct (17) is placed in a zone line along the internal axle sleeve (7) of longitudinal axis (14) direction.
5. according to each described seal arrangement in the claim 1 to 4, it is characterized in that internal axle sleeve (7) has an inner groovy (13) in the zone of the inner side surface (12) of transmission shaft (1), radially dividing plate (15,16) constitutes its border.
6. according to each described seal arrangement in the claim 1 to 5, it is characterized in that inner groovy (13) has a structure corresponding to cylinder blanket.
7. according to each described seal arrangement in the claim 1 to 6, it is characterized in that a pressure element of clamping (19) at least in the zone of inner groovy (13).
8. seal arrangement according to claim 7 is characterized in that, pressure element (19) has a ring structure.
9. according to each described seal arrangement in the claim 1 to 8, it is characterized in that, in inner groovy (13) zone, be mounted with two pressure elements (19).
10. according to each described seal arrangement in the claim 1 to 9, it is characterized in that, at least in the pressure element (19) has a tapered zone (24), and it is with respect to the gradient of longitudinal axis (14) gradient corresponding to the prism (25) of inner groovy (13).
11. according to each described seal arrangement in the claim 1 to 10, it is characterized in that, in a zone in the dividing plate (15,16) radially, be mounted with a Sealing (21,23) at least.
12. the seal arrangement according to claim 11 is characterized in that, Sealing is made of O shape ring.
13. the seal arrangement according to claim 11 is characterized in that, Sealing (21,23) constitutes a flat pilot tape.
14., it is characterized in that pressure element (19) has a seal element (22) at least according to each described seal arrangement in the claim 1 to 13.
15., it is characterized in that pressure element (19) all has two Sealings (22) according to each described seal arrangement in the claim 1 to 14 on mutual two sides dorsad.
16., it is characterized in that internal axle sleeve (7) remains on the ship propeller cavitation (8) according to each described seal arrangement in the claim 1 to 15.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10040211.9 | 2000-08-17 | ||
| DE10040211A DE10040211C2 (en) | 2000-08-17 | 2000-08-17 | Device for sealing drive shafts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363791A true CN1363791A (en) | 2002-08-14 |
| CN1299032C CN1299032C (en) | 2007-02-07 |
Family
ID=7652740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011339578A Expired - Fee Related CN1299032C (en) | 2000-08-17 | 2001-08-17 | Sealed device for drive-shaft |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20020090865A1 (en) |
| JP (1) | JP2002122125A (en) |
| KR (1) | KR100712128B1 (en) |
| CN (1) | CN1299032C (en) |
| DE (1) | DE10040211C2 (en) |
| GB (1) | GB2365936B (en) |
| NL (1) | NL1018780C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619981A (en) * | 2012-03-24 | 2012-08-01 | 中国船舶重工集团公司第七一〇研究所 | Dynamic sealing device for long-endurance watertight counter rotating motor |
| CN103939615A (en) * | 2014-03-28 | 2014-07-23 | 广西华锡集团股份有限公司再生资源分公司 | Sealing device of table concentrator eccentric transmission shaft |
| CN104895825A (en) * | 2014-10-15 | 2015-09-09 | 邢宇 | A shaft sleeve for cooling a double mechanical seal friction pair and a centrifugal pump cooling system having the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101266944B1 (en) | 2010-12-28 | 2013-05-30 | (주) 기홍 | Molding machine for manufacturing refuse derived fuel |
| JP6199290B2 (en) * | 2012-07-27 | 2017-09-20 | イーグル工業株式会社 | Stern tube sealing device |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB597002A (en) * | 1944-08-10 | 1948-01-15 | Ettore Bugatti | Propeller shaft bearing assembly for ships |
| US2746779A (en) * | 1953-03-12 | 1956-05-22 | United Centrifugal Pumps | Seal structure |
| IT969356B (en) * | 1971-10-01 | 1974-03-30 | Kaller S | LOCKING DEVICE |
| US3902726A (en) * | 1974-03-15 | 1975-09-02 | Chuetsu Waukesha Co Ltd | Stern tube sealing device |
| AU503985B2 (en) * | 1975-07-07 | 1979-09-27 | Crane Packing Ltd. | Steen seat for ships |
| US4344630A (en) * | 1979-12-03 | 1982-08-17 | Imre Veres | Sealingly mounting arrangement for propeller shafts of watercraft |
| DE3143866A1 (en) * | 1981-11-05 | 1983-05-11 | Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel | SEALING ARRANGEMENT WITH A RADIAL SLIDING RING |
| GB2166814B (en) * | 1984-11-07 | 1988-03-09 | Nl Industries Inc | Axially compressible rotary shaft seal |
| JPS62125695A (en) * | 1985-11-26 | 1987-06-06 | 株式会社神戸製鋼所 | Manufacture of electric circuit forming substrate |
| JPS62196800A (en) * | 1986-02-24 | 1987-08-31 | 富士電機株式会社 | Vehicle type discriminator |
| JP2820436B2 (en) * | 1989-06-20 | 1998-11-05 | 三菱重工業株式会社 | Intermediate bearing structure for marine contra-rotating propeller shaft |
| DE4222564C2 (en) * | 1992-07-09 | 2001-12-13 | Blohm & Voss Ind Gmbh | Sealing arrangement of propeller drives for ships with two concentric counter-rotating propeller shafts |
| DE4232753C2 (en) * | 1992-09-30 | 2001-03-08 | Blohm & Voss Ind Gmbh | Lubrication system for sealing propeller drives for ships with two counter-rotating propellers arranged concentrically to each other |
| JP2858193B2 (en) * | 1992-10-27 | 1999-02-17 | 三井造船株式会社 | Contra-rotating propeller device |
| MC219A7 (en) * | 1994-08-10 | 1996-03-29 | Antonio Pedone | Watertight floating seal for boat propeller shafts with safety device |
| GB2333331A (en) * | 1997-12-31 | 1999-07-21 | Lewis Patrick | A marine propeller shaft seal |
-
2000
- 2000-08-17 DE DE10040211A patent/DE10040211C2/en not_active Expired - Fee Related
-
2001
- 2001-08-14 JP JP2001246266A patent/JP2002122125A/en active Pending
- 2001-08-15 GB GB0119900A patent/GB2365936B/en not_active Expired - Fee Related
- 2001-08-16 KR KR1020010049186A patent/KR100712128B1/en not_active IP Right Cessation
- 2001-08-17 CN CNB011339578A patent/CN1299032C/en not_active Expired - Fee Related
- 2001-08-17 NL NL1018780A patent/NL1018780C2/en not_active IP Right Cessation
- 2001-08-17 US US09/932,272 patent/US20020090865A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619981A (en) * | 2012-03-24 | 2012-08-01 | 中国船舶重工集团公司第七一〇研究所 | Dynamic sealing device for long-endurance watertight counter rotating motor |
| CN103939615A (en) * | 2014-03-28 | 2014-07-23 | 广西华锡集团股份有限公司再生资源分公司 | Sealing device of table concentrator eccentric transmission shaft |
| CN103939615B (en) * | 2014-03-28 | 2017-01-04 | 广西华锡集团股份有限公司再生资源分公司 | Shaking table eccentric gearing shaft sealer |
| CN104895825A (en) * | 2014-10-15 | 2015-09-09 | 邢宇 | A shaft sleeve for cooling a double mechanical seal friction pair and a centrifugal pump cooling system having the same |
| CN104895825B (en) * | 2014-10-15 | 2017-12-22 | 邢宇 | The axle sleeve and its centrifugal pump cooling system for cooling down double mechanical seal friction pair |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0119900D0 (en) | 2001-10-10 |
| CN1299032C (en) | 2007-02-07 |
| DE10040211A1 (en) | 2002-03-07 |
| KR100712128B1 (en) | 2007-04-27 |
| GB2365936B (en) | 2002-10-02 |
| DE10040211C2 (en) | 2002-10-17 |
| JP2002122125A (en) | 2002-04-26 |
| GB2365936A (en) | 2002-02-27 |
| NL1018780C2 (en) | 2002-02-19 |
| KR20020014726A (en) | 2002-02-25 |
| US20020090865A1 (en) | 2002-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20130817 |