Stepped self-adaptive high-pressure dynamic sealing rotary table device

Abstract

The invention discloses a stepped self-adaptive high-pressure dynamic seal rotary table device, relates to the technical field of underwater radar rotary tables, can adapt to mutual switching of underwater radar deepwater work and water surface presetting, and can realize no leakage of the underwater radar rotary table during deepwater work. The stepped self-adaptive high-pressure dynamic sealing rotary table device comprises a mechanical sealing ring 1, a mechanical sealing ring 2,..., a mechanical sealing ring n, an oil injection nozzle, viscous pressure oil, a direction transmission device, a liquid leakage detection and discharge device, a rotary joint and the like. The radar rotary table has the following advantages: 1) the sealing pressure difference can be improved, and the underwater working depth of the radar rotary table is obviously increased; the sealing pressure difference is in positive correlation with the number of the multiple layers of mechanical sealing rings, and the more the rings are, the higher the pressure difference is; 3) the differential pressure can be distributed to each layer of mechanical sealing ring in a stepped and self-adaptive manner; 4) an outer layer auxiliary dynamic seal is added, so that the sealing reliability of the whole machine is improved; and (5) liquid leakage information and liquid leakage discharge can be monitored.

Description

Technical Field

[0001] The invention belongs to the technical field of radar turntable transmission, and in particular relates to a stepped adaptive high-pressure dynamic seal underwater turntable device. Background Art

[0002] The underwater radar turntable can adapt to the mutual switching between the radar working underwater without leakage and working on the surface, and the dynamic sealing device can realize the underwater radar turntable without leakage. The existing underwater radar turntable mainly adopts two sealing methods. One is to use O-ring to design radial dynamic seal. The disadvantage of this scheme is that it is easy to wear and fail at high speed, and the O-ring is easy to corrode when it contacts the water medium. The advantage is simple structure. The second one uses single-layer mechanical seal. The disadvantage of this scheme is that the sealing pressure difference is small and it cannot adapt to deep water conditions. The advantage is high reliability.

[0003] The existing underwater radar turntable has the following disadvantages: 1. The sealing parts are easy to wear and corrode, and have a short service life; 2. The pressure resistance is low and the underwater working depth is shallow. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a stepped adaptive high-pressure dynamic sealing turntable device, which can realize the underwater radar turntable to work in deep water without leakage.

[0005] In order to achieve the purpose of the present invention, the present invention discloses a stepped adaptive high-pressure dynamic seal turntable device, including: a multi-layer sealing ring, an azimuth transmission device, a base, a rotating column, a base, a leakage discharge pipe, a leakage detection device, a cover plate, a sealing ring, and a rotating joint. The static ring of the multi-layer sealing ring is installed with the outer flange stop of the base through the end cover stop, a sealing ring and a screw, and the installation method adopts a small gap match with the base hole system. The dynamic ring of the multi-layer sealing ring is installed with the outer stop of the rotating column through the inner stop of the turntable, a sealant and a screw, and the installation method adopts a small gap match with the base hole system. The azimuth transmission device is installed with the inner stop of the base of the outer ring stop of the slewing bearing, and the installation method adopts a small gap match with the base shaft system. The azimuth transmission device is installed with the inner stop of the rotating column of the inner ring stop of the slewing bearing, and the installation method adopts a small gap match with the base hole system. The base is installed on the base from below through a sealing ring and a screw to form a high-pressure resistant static seal. The middle part of the base is designed with an inward concave input and output transfer area, and the transfer area is equipped with a high-pressure watertight connector, a leakage discharge water joint, a hydraulic motor oil supply port and an oil return port. The end cover is designed with a high cylindrical water-blocking feature to prevent a small amount of leakage from the multi-layer sealing ring from bypassing. The end cover is designed with a leakage discharge channel and a threaded drain port. The leakage discharge channel is formed by casting and the cover plate is pressed together with the sealing gasket. The threaded drain port is connected to the leakage discharge pipe, so that a small amount of leakage enters the leakage discharge pipe along the leakage discharge channel and is discharged to the outside of the high-pressure dynamic seal turntable device. A small cylindrical hole is opened at the upper end of the base, which is convenient for the leakage discharge pipe to pass through the small cylindrical hole and discharge a small amount of leakage from the multi-layer sealing ring to the outside of the high-pressure dynamic seal turntable device. The cover plate is installed on the upper part of the dynamic ring turntable of the multi-layer sealing ring through a sealing ring and a screw to form a high-pressure static seal. The leakage detection device is installed in the base cavity, which can monitor the leakage information in real time and transmit the leakage information to the high-pressure dynamic seal turntable device through the high-pressure watertight connector in the transfer area.

[0006] Furthermore, the multi-layer seal ring includes a mechanical seal ring, a dynamic seal, a static seal, an oil injection nozzle, viscous pressure oil, an end cover, a static ring support, and a turntable. The mechanical seal ring includes mechanical seal ring 1, mechanical seal ring 2, mechanical seal ring 3, layer by layer from the inside to the outside, until mechanical seal ring n, where n is a natural number greater than 3. The static ring of mechanical seal ring 1 is installed on the end cover, and the static rings of the remaining n - 1 mechanical seal rings are installed on the static ring support. The static ring support is installed on the end cover through a static seal and screws. The n dynamic rings of the mechanical seal ring and the turntable achieve high-pressure static seal radially through a sealing ring, and a spigot is used for radial positioning at the same time. The turntable is designed with a dial post installed, and the dial post is embedded in the n dynamic ring bayonets of the mechanical seal ring to drive the n dynamic rings of the mechanical seal ring to rotate with the turntable. An outer dynamic seal is additionally installed between the static ring support and the turntable for auxiliary sealing to improve the reliability of the overall machine seal. The turntable is designed with n oil injection nozzles and n oil injection holes, and the viscous pressure oil is high-viscosity hydraulic oil and fills the sealing cavity; the pressure resistance of a single mechanical seal ring is P, and the pressure resistance of n mechanical seal rings is n * P; when the external environmental pressure is P0, and P < P0 < i * P, where 0 < i < n, the multi-layer seal ring will adaptively distribute the pressure in a stepped manner, that is, from the outside to the inside, the pressure difference of the i - 1 layer of the mechanical seal ring is P, the pressure difference of the i-th layer is i * P - P0, and the pressure difference of the remaining n - i layers is 0.

[0007] Furthermore, the azimuth transmission device includes a slewing bearing, a pinion, a motor, and a self-aligning mandrel. The motor is installed on the base through the self-aligning mandrel, the pinion is installed on the output shaft of the motor, and the pinion meshes with the internal gear ring of the slewing bearing; the motor drives the inner ring of the slewing bearing to rotate through the pinion.

[0008] Furthermore, the rotary joint includes, but is not limited to, medium rotary transmission devices such as microwave hinges, optical hinges, electrical slip rings, water hinges, and air hinges, and is coaxially installed with the multi-layer seal ring and the azimuth transmission device; the rotary joint is coaxially integrated with an angle measuring device, which can collect the angular position information of the azimuth transmission device in real time and transmit the angular position information out of the high-pressure dynamic seal turntable device through a high-pressure watertight connector in the转接区.

[0009] Compared with the prior art, the significant progress of the present invention is as follows: 1) the use of a stepped adaptive high-pressure dynamic seal to replace the O-ring dynamic seal can avoid the wear and corrosion of the O-ring and the resulting sealing failure; 2) the use of a stepped adaptive high-pressure dynamic seal to replace the single-layer mechanical seal can increase the overall sealing pressure difference and significantly increase the underwater working depth of the radar turntable; 3) the sealing pressure difference of the device is related to the number of multi-layer mechanical sealing rings. The more the number of sealing rings, the higher the sealing pressure; by properly setting the number of sealing rings, the existing underwater working pressure of the radar turntable from 6MPa to 24MPa can be increased; 4) the sealing ring of the device can distribute the pressure difference to each layer of mechanical sealing ring in a stepped and adaptive manner, so that each layer of sealing ring does not work overloaded; 5) an outer layer of dynamic seal is added for auxiliary sealing to improve the reliability of the whole machine sealing; 6) leakage information can be monitored in real time, and the leakage information is transmitted out of the high-pressure dynamic seal turntable device through the high-pressure watertight connector in the transfer area; 7) a leakage discharge channel and a leakage discharge pipe are provided to discharge a small amount of leakage outside the high-pressure dynamic seal turntable device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of a stepped adaptive high-pressure dynamic seal turntable device according to an embodiment of the present invention.

[0011] Figure 2 Composition diagram of a multi-layer sealing ring according to an embodiment of the present invention.

[0012] Figure 3 Composition diagram of the azimuth transmission device according to an embodiment of the present invention.

[0013] Figure 4 Schematic diagram of a leakage liquid discharge channel and a leakage liquid discharge pipe according to an embodiment of the present invention.

[0014] Figure 5 A schematic diagram of an external input and output switching area according to an embodiment of the present invention.

[0015] Among them: 1-multi-layer sealing ring, 2-azimuth transmission device, 3-base, 4-rotating column, 5-base, 5-1-high-pressure watertight connector, 5-2-leakage discharge water joint, 5-3-hydraulic motor oil supply port, 5-4-return oil port, 6-leakage discharge pipe, 7-leakage detection device, 8-cover plate, 9-sealing ring, 10-rotating joint, 11-mechanical sealing ring, 11-1-mechanical sealing ring 1, 11-2-mechanical sealing ring 2, 11- 3—mechanical seal ring 3, 11-n—mechanical seal ring n, 12—dynamic seal, 13—static seal, 14—oiling nozzle, 15—viscous pressure oil, 16—end cover, 16-1—high cylindrical water retaining feature, 16-2—leakage discharge channel, 16-3—threaded drain port, 17—static ring bracket, 18—turntable, 18-1—shift column, 18-2—oiling hole, 21—slewing bearing, 22—pinion, 23—motor, 24—self-aligning spindle. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, a stepped adaptive high-pressure dynamic sealing turntable device includes a multi-layer sealing ring 1, an azimuth transmission device 2, a base 3, a rotating column 4, a base 5, a leakage discharge pipe 6, a leakage detection device 7, a cover plate 8, a sealing ring 9, and a rotating joint 10.

[0018] like Figure 1 , Figure 2 As shown, when installing the fixed part of the multi-layer sealing ring 1, a sealing ring 9 is added to the sealing groove and tightened with screws to form a high-pressure resistant static seal; the end cover 16 of the multi-layer sealing ring 1 is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than level 7; the base 3 installed therewith is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than level 7; the base hole system is used for small clearance installation, and after mutual cooperation, the fixed part of the multi-layer sealing ring 1 can be accurately positioned and installed.

[0019] like Figure 1 , Figure 2 As shown, when installing the rotating part of the multi-layer sealing ring 1, sealant is added to the installation surface and tightened with screws to form an auxiliary static seal; the turntable 18 of the multi-layer sealing ring 1 is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than level 7; the rotating column 4 installed therewith is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than level 7; the base hole system is used for small clearance installation, and after mutual cooperation, the rotating part of the multi-layer sealing ring 1 can be accurately positioned and installed.

[0020] like Figure 1 , Figure 3 As shown, the outer ring of the slewing bearing 21 of the azimuth transmission device 2 is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the base 3 installed therewith is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the base shaft is used for small clearance installation, and after mutual cooperation, the fixed part of the azimuth transmission device 2 can be accurately positioned and installed.

[0021] like Figure 1 , Figure 3As shown, the inner ring of the slewing bearing 21 of the azimuth transmission device 2 is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the rotating column 4 installed therewith is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the base shaft is used for small clearance installation, and after mutual cooperation, the rotating part of the azimuth transmission device 2 can be accurately positioned and installed.

[0022] like Figure 1 As shown, the base 5 is installed on the base 3 from below through the sealing ring 9 and screws to form a high-pressure resistant static seal.

[0023] like Figure 1 , Figure 5 As shown, the middle part of the base 5 is designed with an inwardly concave input and output transfer area, and the transfer area is equipped with a high-pressure watertight connector 5-1, a leakage discharge water joint 5-2, a hydraulic motor oil supply port 5-3 and an oil return port 5-4.

[0024] like Figure 1 , Figure 4 As shown, the end cover 16 is designed with a high cylindrical water retaining feature 16 - 1 to prevent a small amount of leakage from the multi-layer sealing ring 1 from flowing around.

[0025] like Figure 1 , Figure 4 As shown, the end cover 16 is designed with a leakage discharge channel 16-2 and a threaded drain port 16-3; a vertical leakage hole is designed at the high cylindrical water retaining feature 16-1 of the end cover 16 to facilitate the leakage to flow into the leakage hole; a leakage discharge channel 16-2 is designed at the bottom of the end cover 16 connected to the vertical leakage hole, and the leakage discharge channel 16-2 is sealed by a cover plate combined with a sealing gasket to form a sealed leakage cavity; a threaded drain port 16-3 is designed at the bottom of the end cover 16 connected to the leakage discharge channel 16-2, and the threaded drain port 16-3 is pipe threaded to facilitate connection and sealing, and is tightened with the pipe thread of the leakage discharge pipe 6; a relatively sealed leakage discharge channel is formed as a whole, so that a small amount of leakage enters the leakage discharge pipe 6 along the leakage discharge channel 16-2 and is discharged outside the high-pressure dynamic seal turntable device.

[0026] like Figure 1 As shown, a small cylindrical hole is provided at the upper end of the base 3, so that the leakage discharge pipe 6 can pass through the small cylindrical hole to discharge a small amount of leakage from the multi-layer sealing ring 1 to the outside of the high-pressure dynamic sealing turntable device.

[0027] like Figure 1 , Figure 2 As shown, the cover plate 8 is installed on the upper part of the rotating disk 18 of the multi-layer sealing ring 1 through the sealing ring 9 and screws to form a high-pressure resistant static seal.

[0028] like Figure 1 , Figure 5As shown, the leakage detection device 7 is installed in the cavity of the base 3. The leakage sensor provided thereon can monitor the leakage information in real time, and transmit the leakage information to the high-pressure dynamic sealing turntable device through the high-pressure watertight connector 5-1 in the transfer area.

[0029] like Figure 1 , Figure 2 As shown, the multi-layer sealing ring 1 includes a mechanical sealing ring 11, a dynamic seal 12, a static seal 13, an oiling nozzle 14, viscous pressure oil 15, an end cover 16, a static ring bracket 17, and a rotating disk 18.

[0030] like Figure 1 , Figure 2 As shown, the mechanical sealing ring 11 includes mechanical sealing ring 11 - 1 , mechanical sealing ring 11 - 2 , mechanical sealing ring 11 - 3 . . . until mechanical sealing ring 11 - n from the inside to the outside, where n is a natural number greater than 3.

[0031] like Figure 1 , Figure 2 As shown, the stationary ring of the mechanical seal ring 11-1 is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the end cover 16 installed therewith is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the stationary ring of the mechanical seal ring 11-1 can be accurately positioned and installed by using a small gap matching with a base hole system, and after matching with each other, it is fixed with a set screw.

[0032] like Figure 1 , Figure 2 As shown, except for the mechanical seal ring 11-1, the stationary rings of the remaining n-1 mechanical seal rings are designed with inner cylindrical positioning stoppers, and the positioning accuracy is not less than grade 7; the stationary ring bracket 17 installed therewith is designed with outer cylindrical positioning stoppers, and the positioning accuracy is not less than grade 7; the stationary rings of the remaining n-1 mechanical seal rings are accurately positioned and installed by using a small gap matching installation with a base hole system, and after matching with each other, they are fixed with set screws.

[0033] like Figure 2 As shown, the static ring bracket 17 is installed on the end cover 16 from above through the static seal 13 and screws to form a high-pressure resistant static seal; the static ring bracket 17 is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than Class 7; the end cover 16 installed therewith is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than Class 7; the basic hole system is used for small clearance installation, and after mutual cooperation, the static ring bracket 17 can be accurately positioned and installed.

[0034] like Figure 2As shown in the figure, the n moving rings of the mechanical seal ring 11 are designed with internal cylindrical positioning shoulders, and the positioning accuracy is not lower than grade 7; the rotating disk 18 installed in cooperation with it is designed with external cylindrical positioning shoulders, and the positioning accuracy is not lower than grade 7; with a small clearance fit of the basic shaft system for installation, after mutual cooperation, the n moving rings of the mechanical seal ring 11 can be accurately positioned; the n moving rings of the mechanical seal ring 11 form a high-pressure resistant static seal with the end cover 16 through the sealing ring.

[0035] As Figure 2 shown in the figure, the rotating disk 18 is designed with a dial post 18-1. The upper end of the dial post 18-1 is screwed into the rotating disk 18 by a thread, and the lower end of the dial post 18-1 is embedded into the bayonet openings of the n moving rings of the mechanical seal ring 11. The lower end of the dial post 18-1拨动 the n moving rings of the mechanical seal ring 11 to rotate with the rotating disk 18.

[0036] As Figure 2 shown in the figure, the outer circle at the lower end of the stationary ring support 17 is designed with a sealing groove, and a dynamic seal 12 is installed in the sealing groove to form an auxiliary dynamic seal with the inner cylindrical surface at the lower end of the rotating disk 18, improving the reliability of the overall machine seal.

[0037] As Figure 1 、 Figure 2 shown in the figure, the rotating disk 18 is designed with n oil injection nozzles 14 and n oil injection holes 18-2; the oil injection nozzles 14 are blind plug connectors, which can form a high-pressure seal after being separated from the oil injection equipment, so that the viscous pressure oil 15 in the sealed cavity maintains a certain high pressure; the viscous pressure oil 15 is a high-viscosity hydraulic oil and fills the sealed cavity; the pressure resistance of a single mechanical seal ring is P. After the pressure is transmitted in a stepped manner, the pressure resistance of n mechanical seal rings is n*P; when the external environmental pressure is P0, and P<P0<i*P, where 0<i<n, the multi-layer seal ring 1 will adaptively distribute the pressure in a stepped manner, that is, from the outside to the inside, the pressure difference of each of the i-1 layers on the outside of the mechanical seal ring 11 is about P, the pressure difference of the i-th layer is i*P-P0, and the pressure difference of each of the remaining n-i layers on the inside is 0.

[0038] As Figure 1 、 Figure 3 shown in the figure, the azimuth transmission device 2 includes a slewing bearing 21, a pinion 22, a motor 23, and a self-aligning spindle 24.

[0039] As Figure 3 shown in the figure, the motor 23 is designed with an external cylindrical positioning shoulder, and the positioning accuracy is not lower than grade 7; the self-aligning spindle 24 installed in cooperation with it is designed with an internal cylindrical positioning shoulder, and the positioning accuracy is not lower than grade 7; with a small clearance fit of the basic shaft system for installation, after mutual cooperation, the motor 23 can be accurately positioned and installed.

[0040] As Figure 1 、 Figure 3As shown, the self-aligning spindle 24 is designed with an outer cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the corresponding position of the base 3 for installation therewith is designed with an inner cylindrical positioning stop, and the positioning accuracy is not less than grade 7; the self-aligning spindle 24 is accurately positioned and installed by adopting a small gap matching installation with a base hole system, and after mutual cooperation.

[0041] like Figure 3 As shown, the self-aligning spindle 24 has the function of adjusting the meshing center distance between the pinion 22 and the inner gear ring of the slewing bearing 21, so as to facilitate the meshing of the gears.

[0042] like Figure 3 As shown, the pinion 22 is installed on the output shaft of the motor 23, and the pinion 22 is meshed with the inner gear ring of the slewing bearing 21; the motor 23 drives the inner ring of the slewing bearing 21 to rotate through the pinion 22.

[0043] like Figure 1 , Figure 5 As shown, the rotary joint 10 includes but is not limited to medium rotary transmission devices such as microwave hinges, optical hinges, electric slip rings, water hinges, and wind hinges, and the rotary joint 10 is coaxially installed with the multi-layer sealing ring 1 and the azimuth transmission device 2; the rotary joint 10 is coaxially integrated with an angle measuring device, which can collect the angular position information of the azimuth transmission device 2 in real time, and transmit the angular position information to the high-pressure dynamic sealing turntable device through the high-pressure watertight connector 5-1 in the transfer area.

[0044] In summary, the present invention is a set of step-type adaptive high-pressure dynamic seals with a simple structure and significant effects, and can be applied to underwater radars. Compared with the prior art, the significant progress of the present invention is as follows: 1) the use of a stepped adaptive high-pressure dynamic seal to replace the O-ring dynamic seal can avoid the wear and corrosion of the O-ring and the resulting sealing failure; 2) the use of a stepped adaptive high-pressure dynamic seal to replace the single-layer mechanical seal can increase the overall sealing pressure difference and significantly increase the underwater working depth of the radar turntable; 3) the sealing pressure difference of the device is related to the number of multi-layer mechanical sealing rings. The more the number of sealing rings, the higher the sealing pressure; by properly setting the number of sealing rings, the existing underwater working pressure of the radar turntable from 6MPa to 24MPa can be increased; 4) the sealing ring of the device can distribute the pressure difference to each layer of mechanical sealing ring in a stepped and adaptive manner, so that each layer of sealing ring does not work overloaded; 5) an outer layer of dynamic seal is added for auxiliary sealing to improve the reliability of the whole machine sealing; 6) leakage information can be monitored in real time, and the leakage information is transmitted out of the high-pressure dynamic seal turntable device through the high-pressure watertight connector in the transfer area; 7) a leakage discharge channel and a leakage discharge pipe are provided to discharge a small amount of leakage outside the high-pressure dynamic seal turntable device.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepped adaptive high-pressure dynamic seal turntable device, characterized in that: The invention comprises a multi-layer sealing ring (1), an azimuth transmission device (2), a base (3), a rotating column (4), a base (5), a liquid leakage discharge pipe (6), a liquid leakage detection device (7), a cover plate (8), a sealing ring (9), and a rotating joint (10); the static ring of the multi-layer sealing ring (1) is installed by matching the outer flange stop of the base (3) through the stop of the end cover (16), the sealing ring (9) and screws, and the installation method adopts the basic hole system small gap fit; the dynamic ring of the multi-layer sealing ring (1) is installed by matching the outer stop of the rotating column (4) through the inner stop of the rotating disk (18), the sealing glue and the screws, and the installation method adopts the basic hole system small gap fit; the azimuth transmission device (2) is installed by matching the outer ring stop of the slewing bearing (21) with the inner stop of the base (3), and the installation method adopts the basic shaft system small gap fit; the azimuth transmission device (2) is installed by matching the inner ring stop of the slewing bearing (21) with the inner stop of the rotating column (4), and the installation method adopts the basic shaft system small gap fit. The method adopts a base hole system with a small clearance fit; the base (5) is installed on the base (3) from below by means of a sealing ring (9) and screws to form a high-pressure static seal; the middle part of the base (5) is designed with an inwardly concave input and output transfer area, and the transfer area is equipped with a high-pressure watertight connector (5-1), a leakage discharge water joint (5-2), a hydraulic motor oil supply port (5-3) and an oil return port (5-4); the end cover (16) is designed with a high cylindrical water retaining feature (16-1) to prevent a small amount of leakage from the multi-layer sealing ring (1) from flowing around; the end cover (16) is designed with a leakage discharge channel (16-2) and a threaded drain port (16-3), the leakage discharge channel is formed by casting and a cover plate combined with a sealing gasket press-fitting, and the threaded drain port is connected to the leakage discharge pipe (6), so that a small amount of leakage enters the leakage discharge pipe (6) along the leakage discharge channel (16-2) and is then discharged to the outside of the high-pressure dynamic seal turntable device; A small cylindrical hole is provided at the upper end of the base (3) to facilitate the leakage discharge pipe (6) to pass through the small cylindrical hole to discharge a small amount of leakage from the multi-layer sealing ring (1) to the outside of the high-pressure dynamic sealing turntable device; the cover plate (8) is installed on the upper part of the dynamic ring turntable (18) of the multi-layer sealing ring (1) through the sealing ring (9) and screws to form a high-pressure resistant static seal; the leakage detection device (7) is installed in the cavity of the base (3) and can monitor the leakage information in real time, and transmit the leakage information to the high-pressure dynamic sealing turntable device through the high-pressure resistant watertight connector (5-1) in the transfer area.

2. A stepped adaptive high-pressure dynamic seal turntable device according to claim 1, characterized in that: The multi-layer seal ring (1) includes a mechanical seal ring (11), a dynamic seal (12), a static seal (13), an oil injection nozzle (14), viscous pressure oil (15), an end cover (16), a static ring support (17), and a turntable (18); the mechanical seal ring (11) includes, layer by layer from the inside to the outside, a mechanical seal ring 1 (11-1), a mechanical seal ring 2 (11-2), a mechanical seal ring 3 (11-3), up to a mechanical seal ring n (11-n), where n is a natural number greater than 3; the static ring of the mechanical seal ring 1 (11-1) is installed on the end cover (16), and the static rings of the remaining n-1 mechanical seal rings are installed on the static ring support (17), and the static ring support (17) is installed on the end cover (16) through the static seal (13) and screws; the n dynamic rings of the mechanical seal ring (11) and the turntable (18) achieve high-pressure static seal radially through a sealing ring, and at the same time, a spigot is used for radial positioning; the turntable (18) is designed with a dial post (18-1) installed, and the dial post (18-1) is embedded in the n dynamic ring notches of the mechanical seal ring (11) to拨动 the n dynamic rings of the mechanical seal ring (11) to rotate with the turntable (18); an outer dynamic seal (12) is additionally installed between the static ring support (17) and the turntable (18) for auxiliary sealing to improve the reliability of the overall machine seal; the turntable (18) is designed with n oil injection nozzles (14) and n oil injection holes (18-2), and the viscous pressure oil (15) is a high-viscosity hydraulic oil and fills the sealing cavity; the pressure resistance of a single mechanical seal ring is P, and the pressure resistance of n mechanical seal rings is n*P; When the external environmental pressure is P0, and P < P0 < i*P, where 0 < i < n, the multi-layer seal ring (1) will adaptively distribute the pressure in a stepped manner, that is, from the outside to the inside, the pressure difference of the (i-1)th layer of the mechanical seal ring (11) is P, the pressure difference of the ith layer is i*P - P0, and the pressure difference of the remaining n-i layers is 0.

3. The stepped adaptive high-pressure dynamic seal turntable device according to claim 1, characterized in that: The azimuth transmission device (2) includes a slewing bearing (21), a pinion (22), a motor (23), and a self-aligning spindle (24); the motor (23) is installed on the base (3) through the self-aligning spindle (24), the pinion (22) is installed on the output shaft of the motor (23), and the pinion (22) meshes with the internal gear ring of the slewing bearing (21); the motor (23) drives the inner ring of the slewing bearing (21) to rotate through the pinion (22).

4. The stepped adaptive high-pressure dynamic seal turntable device according to claim 1, characterized in that: The rotary joint (10) includes, but is not limited to, medium rotary transmission devices such as microwave hinges, optical hinges, electrical slip rings, water hinges, and air hinges, and is coaxially installed with the multi-layer seal ring (1) and the azimuth transmission device (2); the rotary joint (10) is coaxially integrated with an angle measuring device, which can collect the angular position information of the azimuth transmission device (2) in real time and transmit the angular position information out of the high-pressure dynamic seal turntable device through a high-pressure watertight connector (5-1) in the转接区.

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