CN103835863A - Undersea sealing system, tidal power generation unit applying same and application method - Google Patents
Undersea sealing system, tidal power generation unit applying same and application method Download PDFInfo
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- CN103835863A CN103835863A CN201410083552.3A CN201410083552A CN103835863A CN 103835863 A CN103835863 A CN 103835863A CN 201410083552 A CN201410083552 A CN 201410083552A CN 103835863 A CN103835863 A CN 103835863A
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Abstract
The invention discloses an undersea sealing system, a tidal power generation unit applying the same and an application method. The undersea sealing system comprises a movable sealing member and sealing bodies, and the movable sealing member and the sealing bodies sleeve a rotating member. Pressure cavities are formed on two sides of the movable sealing member by the sealing bodies. Sealing connection between the movable sealing member and the rotating member is enhanced through differential pressure between the pressure cavities on the two sides of the movable sealing member. The undersea sealing system is good in sealing performance, safe and reliable, not easy to wear and long in service life. Transmission shafts and cabins of the undersea tidal power generation unit applying the undersea sealing system can be effectively sealed in a long time. Sealing states can be transmitted to an offshore monitoring center through pressure sensors, sealing conditions of the undersea unit can be monitored in real time, and early warning and timely maintenance can be realized.
Description
Technical field
The present invention relates to technical field of sealing technology, particularly relate to a kind of underwater sealing system, apply its tidal power unit and application process.
Background technique
Along with going deep into of ocean development activity, tidal power technology is used widely.Wherein, the sealing of tidal power unit is the critical problem that needs solution, especially the motive sealing between running shaft and the cabin of tidal power unit, can the quality of its performance directly have influence on tidal power unit and normally work, and even directly has influence on safety and the life-span of unit.
At present, tidal power unit is generally arranged in the depth of water on lower 20 meters to 30 meters of sea level, and motive sealing mode between unit transmission shaft and cabin adopts mechanical sealing structure more, it utilizes spring to supplement elastic force, and the pressure of balance seawater, by the Sealing groove end face that is fixed on inner seal ring tightly, prevent that Sealing from having axial displacement, guarantee the sealing effect of sealing configuration with this, but this kind of sealing configuration there is following shortcoming: (1) quick abrasion, the working life of seal ring is low; (2) media of both sides of seal ring is respectively seawater and lubricant oil, and seawater is easy to dilute the lubricant film that seal ring lip place forms, and causes seal ring dry friction, causes sealability variation; (3) this kind of sealing configuration cannot provide status monitoring, can not know in real time whether the sealing of tidal power unit transmission shaft is intact.
As can be seen here, on above-mentioned existing tidal power unit transmission shaft and cabin sealing means, obviously still have inconvenience and defect, and be urgently further improved.
Summary of the invention
First object of the present invention is to provide a kind of underwater sealing system of good seal performance, thereby overcomes the deficiency of existing mechanical sealing sealing structure degradation.
For achieving the above object, the present invention adopts following technological scheme:
A kind of underwater sealing system, for being tightly connected between nonrotational part and rotating component under water, described sealing system comprises the dynamic seal and the seal that are set on rotating component, described seal is in mineralization pressure chamber, the both sides of dynamic seal, and described dynamic seal is strengthened being tightly connected between rotating component by the pressure reduction between its pressure at both sides chamber.
Further, described dynamic seal is c-shaped along rotating component cross section radially, and the opening of described C shape is towards the larger pressure chamber of pressure.
Further, in described seal, be provided with the pipeline with corresponding pressure feed system connectivity by all the other pressure chambers beyond the pressure chamber near nonrotational part side.
Further, described seal is made up of multiple seal rings that are set on rotating component, and described seal ring interconnects and coordinates and forms described pressure chamber.
Further, in described seal ring, be provided with radial passage and axial pipeline, cooperatively interact by the radial passage in different sealing ring and axial pipeline, by all the other pressure chambers in addition of the pressure chamber near nonrotational part side and corresponding pressure feed system connectivity.
Further, described radial passage has opening on seal ring outer ring surface, and described opening adopts the sealing of sealing plug.
Further, be also provided with the static seal pad being sleeved on rotating component between described seal ring, described axial pipeline has opening on seal ring end face, and on described static seal pad, to pipeline, the aperture position on seal ring end face also has hole to corresponding shaft.
Further, described pressure chamber comprises one or more in oil pocket, water cavity, air cavity.
Further, in described pressure chamber, be provided with pressure transducer.
Second object of the present invention is to provide a kind of tidal power unit of applying above-mentioned underwater sealing system, makes between cabin and transmission shaft, to have permanently effective sealability.Adopt following technological scheme:
A kind of tidal power unit, comprises cabin and transmission shaft, adopts above-mentioned underwater sealing system to seal between described cabin and transmission shaft.
Further, on described transmission shaft, be set with axle sleeve, sleeve lining has annular groove, lays the seal ring being set on transmission shaft in groove.
Further, described sealing system comprises 3 dynamic seals and the seal being made up of 4 interconnective seal rings, draw near apart from cabin and be followed successively by the 4th seal ring, the 3rd dynamic seal, the 3rd seal ring, the second dynamic seal, the second seal ring, the first dynamic seal, the first seal ring, described pressure chamber draws near apart from cabin and is followed successively by water cavity, air cavity, the second oil pocket, the first oil pocket.
Further, the pressure of described water cavity, air cavity, the second oil pocket, the first oil pocket is respectively 0.4bar, 0.3bar, 0.1bar, 0.65bar.
Further, described the 4th seal ring be also connected with the 4th dynamic seal away from cabin side, described the 4th dynamic seal one side is described water cavity, opposite side is extraneous seawater.
Further, described the 4th dynamic seal is also provided with anti-foreign matter baffle plate near a side of seawater.
Further, described generator set also comprises lining, bearing, bearing support, bearing housing is contained on transmission shaft, bearing sleeve is contained on bearing, lining is arranged on bearing support, the first seal ring is connected with lining, on described bearing support and on lining, have for oil duct, air flue and the water channel of the second oil pocket, air cavity, the corresponding connection of water cavity.
The 3rd object of the present invention is to provide a kind of method that underwater sealing system is installed on described tidal power unit.Adopt following technological scheme:
The method that underwater sealing system is installed on described tidal power unit, comprises the following steps: A. is set with axle sleeve on the transmission shaft of described generator set; B. following parts are enclosed within on axle sleeve successively: the 4th seal ring, the 3rd dynamic seal, the 3rd seal ring, the second dynamic seal, the second seal ring, the first dynamic seal, the first seal ring, lining; C. bearing housing is contained on transmission shaft, then bearing sleeve is contained on bearing, lining is arranged on bearing support, oil duct, air flue and water channel with on bearing support on described lining are distinguished to concentric fit; D. the first seal ring is arranged on lining with one heart, the first dynamic seal is arranged on the first seal ring with one heart, again the second seal ring is arranged on the first seal ring with one heart, the second dynamic seal, the 3rd seal ring, the 3rd dynamic seal, the 4th seal ring are installed in accordance with the law in turn; E. by lock bolt, each seal ring, each dynamic seal and lining are fixed on bearing support together; F. the oil duct on described bearing support, water channel, air flue are connected to respectively to corresponding Oil, Water, Gas pressure feed system, and the first oil pocket is connected with oil pressure supply system.
Further, described steps A Intermediate shaft sleeve inwall has annular groove, lays seal ring in groove, and described axle sleeve overlaps on the transmission shaft that installs to generator set together with seal ring.
Further, in described step B, between adjacent seal ring, also cover has static seal pad, described static seal pad is installed after installing each dynamic seal in described step D.
Further, in described step B before the 4th seal ring, on axle sleeve, also cover has anti-foreign matter baffle plate and the 4th dynamic seal successively; After installing the 4th seal ring in described step D, the 4th dynamic seal and anti-foreign matter baffle plate are installed in turn again, are made the 4th dynamic seal one side be communicated with the water cavity in the 4th seal ring, opposite side connects anti-foreign matter baffle plate and is communicated with seawater; Described step e is: by lock bolt, anti-foreign matter baffle plate, each seal ring, each dynamic seal and lining are fixed on bearing support together.
Owing to adopting technique scheme, the present invention at least has the following advantages:
(1) underwater sealing system of the present invention provides the sealing means between a kind of safe and reliable under water little rotating component and nonrotational part, keep suitable pressure difference by dynamic seal both sides, can strengthen the contact force of sealing lip and the rotating component of dynamic seal, ensure sealability.This kind of sealing means can be permanently effective tidal power unit transmission shaft and cabin under seawater are sealed.
(2) as the case may be, dynamic seal can arrange multiple, and pressure chamber also can be one or more in oil pocket, water cavity, air cavity, and multiple choices and combination that sealability is good are provided.
(3) in pressure chamber, can establish pressure transducer, can monitor at any time the state of each circulatory system, carry out in time pressure supply, in addition, pressure transducer also can pass to the Surveillance center on sea level by the pressure data in system, to judge in time the sealing situation of unit under water, realizes fault pre-alarming, instruct attendant in time tidal power unit to be keeped in repair, avoid the destructive accident causing due to seal failure.
(4) the present invention can be by setting up the pressure chamber of other media, when the media of both sides of having avoided traditional dynamic seal is water and oil, the oil film that seal lip place forms is diluted by water and the situation of seal ring dry friction occurs, the sealing lip and the shaft room that have ensured dynamic seal form good oil film or moisture film, have increased working life and the sealability of dynamic seal.
(5) heat that the sealing lip of dynamic seal and sealing place of shaft room produce can be taken away in time by oil circulating system, the gentle circulatory system of water circulation system, can the too high softening dynamic seal of occurrence temperature and cause the situation of leaking.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Fig. 1 is the structural representation of underwater sealing system of the present invention.
Fig. 2 is the axial sectional view of underwater sealing system of the present invention.
Fig. 3 is the schematic diagram that arranges of pressure circulation system.
Embodiment
The invention provides a kind of underwater sealing system, for being tightly connected between nonrotational part and rotating component under water, this kind of sealing means be applied to tidal power unit under seawater, can be permanently effective transmission shaft and cabin are sealed.
Refer to shown in Fig. 1, Fig. 2, transmission shaft 1 conduct rotatable parts under water, on it, cover has axle sleeve 2, is enhanced leaktightness performance, has many places annular groove on the inwall of axle sleeve 2, and seal ring 14 is installed in groove.Underwater sealing system of the present invention comprises the dynamic seal and the seal that are sleeved on axle sleeve 2, and seal is in mineralization pressure chamber, the both sides of dynamic seal, and dynamic seal is strengthened being tightly connected between axle sleeve 2 by the pressure reduction between pressure at both sides chamber.
Wherein, seal can be set to be made up of multiple seal rings that are set on axle sleeve 2, and seal ring interconnects and coordinates and forms described pressure chamber.On the end face of the paraxial cover 2 of seal ring, have the groove that dynamic seal is installed, dynamic seal is c-shaped along transmission shaft 1 cross section radially, and the opening of described C shape is towards pressing the larger pressure chamber in chamber.Wherein, pressure chamber can be selected one or more in oil pocket, water cavity, air cavity according to actual conditions, in the time selecting wherein multiple, and for the oil film of avoiding sealing place to form is diluted, the best non-conterminous setting of oil pocket and water cavity.
In seal ring, be provided with the pipeline with corresponding pressure feed system connectivity by all the other the each pressure chambers except the pressure chamber near nonrotational part side, pipeline comprises radial passage and axial pipeline, and the radial passage in different sealing ring and axially pipeline cooperatively interact above-mentioned pressure chamber and corresponding pressure feed system connectivity.Wherein, radial passage has opening on seal ring outer ring surface, and this opening can adopt sealing plug 13 to seal.Axially pipeline has opening on the end face of seal ring, and this opening on adjacent seals ring aligns mutually.In addition, for further enhanced leaktightness performance, between seal ring, especially near between the seal ring of cabin side, can further be provided with static seal pad 12, static seal pad 12 can be laid by annular groove being set on the end face of seal ring, in addition, if the opening of the axial pipeline of the anchor ring of static seal pad 12 process on seal ring end face also should have hole on the corresponding position of described static seal pad 12 herein.
According to above setting, can form the following layout shown in Fig. 1,2: draw near apart from cabin, on the axle sleeve 2 of generator set, be set with successively: the 4th seal ring 9, the 3rd dynamic seal 11-3, the 3rd seal ring 8, the second dynamic seal 11-2, static seal pad 12, the second seal ring 7, the first dynamic seal 11-1, static seal pad 12, the first seal ring 6.Described pressure chamber draws near apart from cabin and is followed successively by water cavity 9-1, air cavity 8-1, the second oil pocket 7-1, the first oil pocket 6-1.Four pressure chambers can arrange pressure as the case may be, and the pressure chamber pressure that corresponding order is set in this example is followed successively by 0.4bar, 0.3bar, 0.1bar, 0.65bar.Wherein water cavity 9-1, air cavity 8-1, the second oil pocket 7-1 are separately positioned on the 4th seal ring 9, the 3rd seal ring 8, the second seal ring 7 inside.In addition, the 4th seal ring be also connected with the 4th dynamic seal 11-4 away from bearing 4 sides, the 4th dynamic seal 11-4 mono-side is communicated with described water cavity 9-1, opposite side is communicated with extraneous seawater.For preventing that the foreign matter in seawater from producing interference, is also provided with anti-foreign matter baffle plate 10 in the connection seawater side of the 4th dynamic seal 11-4.Anti-foreign matter baffle plate 10 herein also can adopt with above-mentioned seal ring and be sleeved on axle sleeve 2 with the form of the ring part of material, this ring part is pressed on the 4th dynamic seal 11-4 in the groove on the 4th seal ring 9 on the one hand, form barrier in the C shape open outer side of the 4th dynamic seal 11-4 on the other hand, in obstruction seawater, in foreign matter, do not hinder seawater to enter, make the C shape opening side of the 4th dynamic seal 11-4 be full of the large seawater of water cavity 9-1 pressure than dorsal part.
Please continue to refer to Fig. 1, shown in Fig. 2, the tidal power unit of applying underwater sealing system of the present invention also comprises lining 5, bearing 4 and bearing support 3, bearing 4 is sleeved on transmission shaft 1, realize the location of bearing 4 by the end face of axle sleeve 2, bearing support 3 is sleeved on bearing 4, lining 5 is arranged on bearing support 3, the first seal ring 6 is connected with lining 5, on lining 5 and on bearing support 3, have respectively and the second oil pocket 7-1, air cavity 8-1, the oil duct that water cavity 9-1 is communicated with, air flue and water channel, wherein, on lining 5, have axial oil duct 5-1, on bearing support 3, have axial oil duct 3-1 and radial direction oil, axial oil duct 3-1 concentric fit on the axial oil duct 5-1 of lining 5 and bearing support 3, the axial oil duct 3-1 of bearing support 3 is connected to the glossy slide opening position on bearing support 3 by described radial direction oil.Bearing 4, axle sleeve 2 coordinate the first seal ring 6 to form the first oil pocket 6-1 in the C shape opening side of the first dynamic seal 11-1, in the first oil pocket 6-1, are full of lubricant oil, also can ensure that bearing obtains good lubricating in ensureing good sealing.
Shown in Fig. 3, pressure feed system comprises oily supply system 15, water supply system 16, gas supply system 17, and each pressure chamber, by the radial passage and the axial pipeline that arrange in seal ring, is communicated to respectively each self-corresponding pressure feed system.Particularly, oily supply system 15 is connected to the glossy slide opening position on bearing support 3, and be communicated with the first oil pocket 6-1 and the second oil pocket 7-1 respectively, form a set of complete oil circulating system, to realize the first oil pocket 6-1 different with the pressure of the second oil pocket 7-1 by various relief valves and solenoid directional control valve are set for this oil circulating system; Gas supply system 17 is connected to the air flue on bearing support 3, and is communicated with the air cavity 8-1 in the 3rd seal ring 8, form the complete gas circulatory system; Water supply system 16 is connected to the water channel on bearing support 3, and is communicated with the water channel 9-1 on the 4th seal ring, form a set of complete water circulation system.
The above-mentioned gentle circulatory system of oil circulating system, water circulation system is reponse system, in three systems, is equipped with pressure transducer, and in the time that the pressure of system is less than predefined value, system can start supplementary pressure automatically by motor, ensures sealability.
In addition, pressure transducer also can pass to the Surveillance center on sea level by the pressure data in system, and monitoring system state, realizes fault pre-alarming at any time, instruct attendant in time tidal power unit to be keeped in repair, avoid because seal failure causes destructive accident.
Shown in Fig. 1, Fig. 2, while underwater sealing system of the present invention being installed on tidal power unit, can carry out in accordance with the following steps:
(1) first seal ring 14 is put into the groove of axle sleeve 2, then axle sleeve 2 is installed on transmission shaft 1 together with seal ring 14.
(2) according to the order of anti-foreign matter baffle plate 10, the 4th dynamic seal 11-4, the 4th seal ring 9, the 3rd dynamic seal 11-3, the 3rd seal ring 8, the second dynamic seal 11-2, static seal pad 12, the second seal ring 7, the first dynamic seal 11-1, static seal pad 12, the first seal ring 6, lining 5, above-mentioned parts are enclosed within on axle sleeve 2.
(3) bearing 4 is sleeved on transmission shaft 1, realize the location of bearing 4 by the end face of axle sleeve 2, and then bearing support 3 is sleeved on bearing 4, on bearing support 3, have axial oil duct 3-1 and radial direction oil, axially oil duct 3-1 is connected to the glossy slide opening position of bearing support 3 by described radial direction oil, for preventing oil leak, in the time of installation shaft bearing 3, must ensure the axial oil duct 3-1 of bearing support 3 straight up.
(4) lining 5 is arranged on bearing support 3, when installation, ensures the axial oil duct 3-1 concentric fit on oil duct 5-1 and the bearing support 3 of lining 5; Meanwhile, air flue and the water channel concentric fit on the air flue on lining 5 and water channel and bearing support 3.
(5) the first seal ring 6 is arranged on lining 5 with one heart, the oil duct 5-1 of lining 5 and axial pipeline concentric fit corresponding on the first seal ring when installation, be communicated with the second oil pocket 7-1 by this axial pipeline with the oil duct 5-1 that ensures lining 5; Equally, the air flue on lining 5 and water channel also respectively with axial pipeline concentric fit corresponding on the first seal ring.
(6) static seal pad 12 and the first dynamic seal 11-1 are put into respectively to the respective slot of opening on the first seal ring 6, note not making the sealing lip of the first dynamic seal 11-1 have any bending.
(7) the second seal ring 7 is arranged on the first seal ring 6 with one heart, the second seal ring 7 and mutual corresponding axial pipeline on the first seal ring 6 align when installation, to ensure that each pressure chamber is communicated with corresponding pressure supply system, meanwhile, the end face of guarantee the second seal ring 7 flattens the first dynamic seal 11-1 and static seal pad 12.
(8) static seal pad 12 and the second dynamic seal 11-2 are put into respectively to the respective slot of the second seal ring 7, note not making the sealing lip of the second dynamic seal 11-2 have any bending.
(9) the 3rd seal ring 8 is arranged on the second seal ring 7 with one heart, the second seal ring 7 and mutual corresponding axial pipeline on the 3rd seal ring 8 align when installation, to ensure that air cavity 8-1 and water cavity 9-1 are communicated with corresponding pressure supply system, meanwhile, the end face of guarantee the 3rd seal ring 8 flattens the second dynamic seal 11-2 and static seal pad 12.
(10) the 3rd dynamic seal 11-3 is put into the respective slot of the 3rd seal ring 8, note not making the sealing lip of the 3rd dynamic seal 11-3 have any bending.
(11) the 4th seal ring 9 is arranged on the 3rd seal ring 8 with one heart, when installation, align on the 3rd seal ring 8 and the 4th seal ring 9 corresponding axial pipeline mutually, to ensure that water cavity 9-1 is communicated with corresponding pressure supply system, meanwhile, ensure end face pressing the 3rd dynamic seal 11-3 and the static seal pad 12 of the 4th seal ring 9.
(12) the 4th dynamic seal 11-4 is put into the respective slot of the 4th seal ring 9, note not making the sealing lip of the 4th dynamic seal 11-4 have any bending.
(13) anti-foreign matter baffle plate 10 is arranged on the 4th seal ring 9 with one heart, ensures that the end face of anti-foreign matter baffle plate 10 flattens the 4th dynamic seal 11-4.
(14) by lock bolt 15, anti-foreign matter baffle plate 10, the 4th dynamic seal 11-4, the 4th seal ring 9, the 3rd dynamic seal 11-3, the 3rd seal ring 8, the second dynamic seal 11-2, static seal pad 12, the second seal ring 7, the first dynamic seal 11-1, static seal pad 12, the first seal ring 6, lining 5 are fixed on bearing support 3 together.
(15) oily supply system 15, water supply system 16 and gas supply system 17 are connected with glossy slide opening position, water channel, the air flue of bearing support 3 respectively, form oil circulating system, water circulation system and the gas circulatory system of independent completion separately.
By the setting of above-mentioned oil circulating system, the different pressure values of the gentle circulatory system of water circulation system, " C " mouthful side pressure that can ensure each dynamic seal is powerful in opposite side, in the working procedure of tidal power unit, under the effect of pressure reduction, by the distortion of dynamic seal " C " mouth, can increase the contact force of dynamic seal and axle sleeve 2, ensure sealability.
Be example by the pressure values of each pressure chamber setting in above-described embodiment, the tidal power unit of the above-mentioned underwater sealing system of application of the present invention will be debugged before lower water, will ensure the realization of following data when debugging:
1. regulate oil circulating system, make to be full of lubricant oil in the first oil pocket 6-1 and the second oil pocket 7-1, and the oil pressure of the first oil pocket 6-1 is 0.65bar by the various relief valves that arrange and the effect of solenoid directional control valve, the oil pressure of the second oil pocket 7-1 is 0.1bar.
2. regulate the gas circulatory system, make to be full of in air cavity 8-1 the air that pressure is 0.3bar.
3. regulate water circulation system, make to be full of in water cavity 9-1 the water that pressure is 0.4bar.
By above-mentioned oil circulating system, the acting in conjunction of the gentle circulatory system of water circulation system, the tidal power unit of the above-mentioned underwater sealing system of application of the present invention has been realized the reliable sealing in transmission shaft and cabin, apart from cabin, the medium of dynamic seal both sides is from the close-by examples to those far off respectively: oil-oil, oil-gas, air-water, water-water, when the media of both sides of having avoided dynamic seal is water and oil, the oil film that seal lip place forms is by water-reducible situation, good oil film or moisture film are ensured to form between the sealing lip of dynamic seal and axle sleeve 2, working life and the sealability of dynamic seal are increased.In addition, the heat that sealing place produces can be taken away in time by above-mentioned oil circulating system, the gentle circulatory system of water circulation system, can the too high softening dynamic seal of occurrence temperature and cause the situation of leaking.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (20)
1. a underwater sealing system, for being tightly connected between nonrotational part and rotating component under water, it is characterized in that, described sealing system comprises the dynamic seal and the seal that are set on rotating component, described seal is in mineralization pressure chamber, the both sides of dynamic seal, and described dynamic seal is strengthened being tightly connected between rotating component by the pressure reduction between its pressure at both sides chamber.
2. underwater sealing system according to claim 1, is characterized in that, described dynamic seal is c-shaped along rotating component cross section radially, and the opening of described C shape is towards the larger pressure chamber of pressure.
3. underwater sealing system according to claim 1, is characterized in that, is provided with the pipeline with corresponding pressure feed system connectivity by all the other pressure chambers beyond the pressure chamber near nonrotational part side in described seal.
4. underwater sealing system according to claim 1, is characterized in that, described seal is made up of multiple seal rings that are set on rotating component, and described seal ring interconnects and coordinates and forms described pressure chamber.
5. underwater sealing system according to claim 4, it is characterized in that, in described seal ring, be provided with radial passage and axial pipeline, cooperatively interact by the radial passage in different sealing ring and axial pipeline, by all the other pressure chambers in addition of the pressure chamber near nonrotational part side and corresponding pressure feed system connectivity.
6. underwater sealing system according to claim 5, is characterized in that, described radial passage has opening on seal ring outer ring surface, and described opening adopts the sealing of sealing plug.
7. underwater sealing system according to claim 5, it is characterized in that, between described seal ring, be also provided with the static seal pad being sleeved on rotating component, described axial pipeline has opening on seal ring end face, and on described static seal pad, to pipeline, the aperture position on seal ring end face also has hole to corresponding shaft.
8. underwater sealing system according to claim 1, is characterized in that, described pressure chamber comprises one or more in oil pocket, water cavity, air cavity.
9. underwater sealing system according to claim 1, is characterized in that, in described pressure chamber, is provided with pressure transducer.
10. a tidal power unit, comprises cabin and transmission shaft, it is characterized in that, adopts the underwater sealing system described in claim 1-9 any one to seal between described cabin and transmission shaft.
11. tidal power units according to claim 10, is characterized in that, on described transmission shaft, be set with axle sleeve, sleeve lining has annular groove, lays the seal ring being set on transmission shaft in groove.
12. tidal power units according to claim 10, it is characterized in that, described sealing system comprises 3 dynamic seals and the seal being made up of 4 interconnective seal rings, draw near apart from cabin and be followed successively by the 4th seal ring, the 3rd dynamic seal, the 3rd seal ring, the second dynamic seal, the second seal ring, the first dynamic seal, the first seal ring, described pressure chamber draws near apart from cabin and is followed successively by water cavity, air cavity, the second oil pocket, the first oil pocket.
13. tidal power units according to claim 12, is characterized in that, the pressure of described water cavity, air cavity, the second oil pocket, the first oil pocket is respectively 0.4bar, 0.3bar, 0.1bar, 0.65bar.
14. tidal power units according to claim 12, is characterized in that, described the 4th seal ring be also connected with the 4th dynamic seal away from cabin side, described the 4th dynamic seal one side is described water cavity, opposite side is extraneous seawater.
15. tidal power units according to claim 14, is characterized in that, described the 4th dynamic seal is also provided with anti-foreign matter baffle plate near a side of seawater.
16. tidal power units according to claim 12, it is characterized in that, described generator set also comprises lining, bearing, bearing support, bearing housing is contained on transmission shaft, bearing sleeve is contained on bearing, lining is arranged on bearing support, and the first seal ring is connected with lining, on described bearing support and on lining, have for oil duct, air flue and the water channel of the second oil pocket, air cavity, the corresponding connection of water cavity.
17. 1 kinds the method for underwater sealing system is installed on the tidal power unit described in claim 16, it is characterized in that, comprise the following steps:
A. on the transmission shaft of described generator set, be set with axle sleeve;
B. following parts are enclosed within on axle sleeve successively: the 4th seal ring, the 3rd dynamic seal, the 3rd seal ring, the second dynamic seal, the second seal ring, the first dynamic seal, the first seal ring, lining;
C. bearing housing is contained on transmission shaft, then bearing sleeve is contained on bearing, lining is arranged on bearing support, oil duct, air flue and water channel with on bearing support on described lining are distinguished to concentric fit;
D. the first seal ring is arranged on lining with one heart, the first dynamic seal is arranged on the first seal ring with one heart, again the second seal ring is arranged on the first seal ring with one heart, the second dynamic seal, the 3rd seal ring, the 3rd dynamic seal, the 4th seal ring are installed in accordance with the law in turn;
E. by lock bolt, each seal ring, each dynamic seal and lining are fixed on bearing support together;
F. the oil duct on described bearing support, water channel, air flue are connected to respectively to corresponding Oil, Water, Gas pressure feed system, and the first oil pocket is connected with oil pressure supply system.
The method of 18. installation underwater sealing systems according to claim 17, is characterized in that, described steps A Intermediate shaft sleeve inwall has annular groove, lays seal ring in groove, and described axle sleeve overlaps on the transmission shaft that installs to generator set together with seal ring.
The method of 19. installation underwater sealing systems according to claim 17, is characterized in that, in described step B, between adjacent seal ring, also cover has static seal pad, described static seal pad is installed after installing each dynamic seal in described step D.
20. methods that underwater sealing system is installed on tidal power unit according to claim 17, is characterized in that, in described step B before the 4th seal ring, on axle sleeve, also cover has anti-foreign matter baffle plate and the 4th dynamic seal successively; After installing the 4th seal ring in described step D, the 4th dynamic seal and anti-foreign matter baffle plate are installed in turn again, making the 4th dynamic seal one side is the water cavity in the 4th seal ring, and opposite side connects anti-foreign matter baffle plate and is communicated with seawater; Described step e is: by lock bolt, anti-foreign matter baffle plate, each seal ring, each dynamic seal and lining are fixed on bearing support together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083552.3A CN103835863B (en) | 2014-03-07 | 2014-03-07 | A kind of underwater sealing system, the tidal power unit applying it and application process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083552.3A CN103835863B (en) | 2014-03-07 | 2014-03-07 | A kind of underwater sealing system, the tidal power unit applying it and application process |
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| CN103835863A true CN103835863A (en) | 2014-06-04 |
| CN103835863B CN103835863B (en) | 2016-03-23 |
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| CN (1) | CN103835863B (en) |
Cited By (5)
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| CN104165227A (en) * | 2014-07-30 | 2014-11-26 | 中国船舶重工集团公司第七0四研究所 | Dismountable rotating shaft lip seal device |
| CN104455280A (en) * | 2014-09-29 | 2015-03-25 | 中国船舶重工集团公司第七〇四研究所 | High-power output inertia tester |
| CN110185800A (en) * | 2019-04-18 | 2019-08-30 | 上海空间推进研究所 | Space flight radial seal elastic element installation method |
| CN111779763A (en) * | 2020-07-01 | 2020-10-16 | 中车永济电机有限公司 | Axle suspension bush for direct current traction motor |
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
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| GB861557A (en) * | 1958-10-01 | 1961-02-22 | Sulzer Ag | Sealing means for shafts |
| WO2006022378A1 (en) * | 2004-08-26 | 2006-03-02 | Eagle Industry Co., Ltd. | Mechanical seal device |
| CN201265651Y (en) * | 2008-07-25 | 2009-07-01 | 广东科达机电股份有限公司 | Sealing device for mechanical rotating shaft |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165227A (en) * | 2014-07-30 | 2014-11-26 | 中国船舶重工集团公司第七0四研究所 | Dismountable rotating shaft lip seal device |
| CN104165227B (en) * | 2014-07-30 | 2017-12-08 | 中国船舶重工集团公司第七0四研究所 | A kind of detachable rotating shaft lip-shaped sealing device |
| CN104455280A (en) * | 2014-09-29 | 2015-03-25 | 中国船舶重工集团公司第七〇四研究所 | High-power output inertia tester |
| CN104455280B (en) * | 2014-09-29 | 2017-04-05 | 中国船舶重工集团公司第七0四研究所 | A kind of high-power output inertia test device |
| CN110185800A (en) * | 2019-04-18 | 2019-08-30 | 上海空间推进研究所 | Space flight radial seal elastic element installation method |
| CN111779763A (en) * | 2020-07-01 | 2020-10-16 | 中车永济电机有限公司 | Axle suspension bush for direct current traction motor |
| CN114855903A (en) * | 2022-04-29 | 2022-08-05 | 三一重机有限公司 | Connection structure of accessory and operation arm and operation machine |
| CN114855903B (en) * | 2022-04-29 | 2023-07-25 | 三一重机有限公司 | Attachment and working arm connection structure and working machine |
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|---|---|
| CN103835863B (en) | 2016-03-23 |
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