Pressure self-adaptive rotary transmission device suitable for deep sea environment

Abstract

The invention provides a pressure self-adaptive rotary transmission device suitable for a deep sea environment, and belongs to the field of rotary transmission. The invention relates to a pressure self-adaptive rotary transmission device suitable for a deep sea environment. The pressure self-adaptive rotary transmission device comprises a sealed rotary transmission device and a self-adaptive pressure adjusting module, wherein a power transmission component and a signal transmission component are arranged in the sealed rotary transmission device, the power transmission component can transmit electric power signals, the signal transmission component can transmit various control signals, the sealed rotary transmission device is filled with insulating oil, and a waterproof connector is installed on a shell of the sealed rotary transmission device. Insulating oil can be always kept in the product; internal and external pressure balance of the device can be adjusted in real time through the structure of the device without monitoring internal and external pressure conditions, use requirements of various different environments can be met, and the device has the advantages of being high in reliability, small in torque, long in service life and the like especially when used in the deep sea environment.

Description

Technical Field

[0001] This invention belongs to the field of rotary transmission, specifically, it relates to a pressure-adaptive rotary transmission device suitable for deep-sea environments. Background Technology

[0002] In the field of rotary transmission, with the increasing demand for marine exploration and the rapid advancement of technology, some new exploration equipment needs to penetrate deep into the seabed, and some of these devices require rotary transmission. However, rotary transmission devices face two major challenges under the high pressure of the deep sea: sealing and high pressure. How to achieve highly reliable products through simple and low-cost design has also placed higher demands on rotary transmission devices.

[0003] Currently, the relevant existing technologies include: Chinese patent application CN120444412A discloses a self-balancing underwater precision rotary sealing device and its usage method. The device includes a connecting flange seat, a rotary sealing mechanism, a rotating mechanism, and a pressure balancing mechanism connected in sequence. The rotary sealing mechanism includes a connecting cylinder and a fixed cylinder that rotate relative to each other. A rotating shaft is located inside the rotating fixed cylinder of the rotating mechanism, and the rotating shaft is fixedly connected to the connecting cylinder via the connecting flange seat. The rotating fixed cylinder is also fixedly connected to the fixed cylinder. The pressure balancing mechanism contains flowing electric pump oil, which also circulates within the rotating mechanism and the rotary sealing mechanism. Multiple differential pressure compensators are installed on the pressure balancing mechanism to adjust and balance the internal and external pressure differences. This technical solution mainly achieves precise control of the position and angle of the fixed end (the part where the equipment is installed) through a motor and encoder. The rotating end is controlled by a motor via an electrical connector. However, the fixed end cannot rotate in one direction indefinitely, limiting the applicability of the device. In addition, although this technical solution also has a pressure self-regulation function, its adaptive seal uses O-rings for pressure adjustment. O-ring seals have low pressure resistance and are suitable for shallow water underwater sealing, but cannot be used in deep sea.

[0004] Therefore, there is a lack of existing technologies that can ensure communication transmission and flexible rotation functions in deep-sea environments. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a pressure-adaptive rotary transmission device suitable for deep-sea environments.

[0006] The pressure-adaptive rotary transmission device for deep-sea environments provided by the present invention includes: a sealed rotary transmission device and a pressure-adaptive adjustment module. The pressure adaptive adjustment module is located inside the sealed rotary transmission device. The sealed rotary transmission device employs multiple static seals; The sealed rotary transmission device includes: an outer sleeve, a rotating inner shaft, a lower rotating end cap housing, and an upper rotating housing; The outer sleeve is the outermost rotating and protective structure of the sealed rotary transmission device. The upper rotating shell connected to the rotating inner shaft is the internal rotating structure of the sealed rotating transmission device. The lower screw end cap housing is located at one end of the outer sleeve. One end of the rotating inner shaft passes through the lower rotating end cap housing and is disposed inside the outer sleeve, while the other end of the rotating inner shaft is connected to the upper rotating housing. The upper rotating shell is disposed outside the outer sleeve; The pressure adaptive adjustment module is a ring structure that is sealed between the rotating inner shaft and the lower end cap housing.

[0007] Preferably, as the product equipped with the rotary transmission device goes deeper and deeper into the ocean, the pressure of the external marine environment increases. At this time, the external seawater pressure acts on the outer surface of the pressure adaptive adjustment module. The pressure adaptive adjustment module moves along the axis of the rotary transmission device toward the sealed internal cavity of the rotary transmission device, compressing the volume of the internal cavity of the rotary transmission device to adjust the internal pressure of the device until the internal and external pressures of the device are equal. When a product equipped with the rotary transmission device rises from deep water, the external pressure of the rotary transmission device decreases, and the pressure adaptive adjustment module extends outward along the axial direction of the rotary transmission device to adjust the pressure inside and outside the device to be equal.

[0008] Preferably, the pressure adaptive adjustment module includes: a sealing ring, a screw, a cover plate, an insulating ring, and a frame; The sealing ring and insulating ring are fitted onto the frame; One end of the frame faces the inside of the sealed rotary transmission device, and a cover plate is connected to one end of the frame by screws, with the cover plate facing the outside of the sealed rotary transmission device.

[0009] Preferably, the frame is a T-shaped beam ring support structure, with one side of the T-shaped surface of the frame facing the internal cavity of the sealed rotary transmission device, and the outer ring edge of the frame abutting against the inner wall of the lower rotating end cap housing. One side of the skeleton faces the outside of the sealed rotary transmission device, and the T-shaped tail is connected by screws to a cover plate with a surface area equal to that of the T-shaped surface of the skeleton.

[0010] Preferably, the frame is fitted with two sets of sealing rings. The sealing rings in each group are arranged as follows: two sealing rings are arranged sequentially from the outside to the inside along the radial direction of the pressure adaptive adjustment module on both sides of the frame. An insulating ring is provided between the two sets of sealing rings; The insulating rings are arranged sequentially from the outside to the inside along the radial direction of the pressure adaptive adjustment module on both sides of the frame.

[0011] Preferably, the pressure adaptive adjustment module further includes: lubricating grease. The insulating ring has a through hole; Both sets of four-ring sealing rings have oil grooves on the contact side with the insulating ring. The space formed by the oil grooves on both sides of the through hole of the insulating ring is filled with grease, which provides lubrication for the overall movement of the pressure adaptive adjustment module.

[0012] Preferably, the frame is made of metal, and the oil groove on the sealing ring is a trapezoidal groove.

[0013] Preferably, the sealing ring is a pressure-resistant sealing ring with a minimum pressure resistance of 60 MPa; The insulating ring is made of polytetrafluoroethylene.

[0014] Preferably, the pressure-adaptive rotary transmission device suitable for deep-sea environments further includes: insulating oil, a power transmission component, and a signal transmission component. The sealed rotary transmission device has a power transmission component and a signal transmission component installed inside its cavity. The sealed rotary transmission device is filled with insulating oil, which is an incompressible oil. The power transmission component transmits electrical power signals, and the signal transmission component transmits control signals.

[0015] Preferably, the adaptive rotary transmission device suitable for deep-sea environmental pressure further includes: a waterproof connector. The sealed rotary transmission device is connected to external connectors on both sides via waterproof connectors. The waterproof connectors ensure the product's sealing and prevent the internal insulating oil of the sealed rotary transmission device from leaking to the outside of the device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention adopts a modular design by combining a sealed rotary transmission device and a pressure adaptive adjustment module, which enables the overall device to achieve real-time pressure adaptive adjustment at any ocean depth. It can maintain the internal and external water pressure of the product basically equal without constantly monitoring the internal and external pressure of the product, thus preventing the rotary transmission device from bursting due to excessive internal and external pressure. 2. This invention has good deep-sea applicability and highly reliable equipment sealing; 3. The transmission signal of this invention is scalable and has a wide range of applications. Attached Figure Description

[0017] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a dimensional drawing of one embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the internal and external pressure adjustment of the device of the present invention; Figure 4 This is a schematic diagram of the pressure adaptive adjustment module of the present invention.

[0018] The diagram shows: Detailed Implementation

[0019] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0020] like Figure 1 As shown, this embodiment of the invention provides a pressure-adaptive rotary transmission device suitable for deep-sea environments, comprising: a sealed rotary transmission device 2 and a pressure-adaptive adjustment module 5; The pressure adaptive adjustment module 5 is disposed within the sealed rotary transmission device 2, which employs multiple static seals. The sealed rotary transmission device 2 includes: an outer sleeve 201, a rotating inner shaft 202, a lower rotary end cap housing 203, and an upper rotary housing 204. The outer sleeve 201 is the outermost rotating and protective structure of the sealed rotary transmission device 2, with the lower rotary end cap housing 203 located at one end. The upper rotary housing 204, connected to the rotating inner shaft 202, forms the inner rotating structure of the sealed rotary transmission device 2. One end of the rotating inner shaft 202 passes through the lower rotary end cap housing 203 and is disposed within the outer sleeve 201, while the other end connects to the upper rotary housing 204. The upper rotary housing 204 is disposed outside the outer sleeve 201. The pressure adaptive adjustment module 5 is a ring-shaped structure sealed between the rotating inner shaft 202 and the lower rotary end cap housing 203.

[0021] Figure 3As shown, when the product carrying this device reaches deeper and deeper in the ocean, the pressure of the external marine environment increases. At this time, the external seawater pressure P2 acts on the outer surface of the pressure adaptive adjustment module 5. The pressure adaptive adjustment module 5 moves along the axis of the rotary transmission device towards the sealed internal cavity of the rotary transmission device 2, compressing the volume of the internal cavity to adjust the internal pressure P1 until the internal and external pressures of the device are equal (P1=P2). Conversely, if the product carrying this device rises from deep water, the external pressure P2 decreases, and the pressure adaptive adjustment module 5 extends outward along the axis of the rotary transmission device to adjust the internal and external pressures of the device to be equal (P1=P2).

[0022] Furthermore, the aforementioned pressure-adaptive rotary transmission device suitable for deep-sea environments also includes: a waterproof connector 6. The sealed rotary transmission device 2 is connected to external connectors on both sides via the waterproof connector 6. The waterproof connector 6 ensures the product's sealing and prevents the internal insulating oil 1 of the sealed rotary transmission device 2 from leaking to the outside.

[0023] Furthermore, such as Figure 4 As shown, the pressure adaptive adjustment module 5 includes: a sealing ring 501, a screw 502, a cover plate 503, an insulating ring 504, a frame 505, and a lubricant 506. The aforementioned skeleton 505 is configured as a T-shaped beam ring support structure. One side of the T-shaped surface of the skeleton 505 faces the internal cavity of the sealed rotary transmission device 2. The outer ring edge of the skeleton 505 seals against the inner wall of the lower end cap housing 203. The T-shaped tail side faces the outside of the sealed rotary transmission device 2 and is connected to a cover plate 503 with a surface area equal to that of the T-shaped surface of the skeleton 505. The two are connected by screws 502. The T-shaped surface of the skeleton 505 and the surface of the cover plate 503 form the two end faces of the pressure adaptive adjustment module 5. The two end faces have equal areas to help balance the pressure inside and outside the pressure adaptive adjustment module 5. Two sets of sealing rings 501 are fitted onto the frame 505. Specifically, each set of sealing rings 501 is arranged as follows: two sealing rings are arranged sequentially from the outside to the inside along the radial direction of the pressure adaptive adjustment module 5 on both sides of the frame 501. Further, an insulating ring 504 is arranged between the two sets of sealing rings 501. The insulating ring 504 is arranged sequentially from the outside to the inside along the radial direction of the pressure adaptive adjustment module 5 on both sides of the frame 501, and the insulating ring 504 has a through hole. Oil grooves are provided on the contact sides of the two sets of four sealing rings and the insulating ring 504. The space formed by the through hole of the insulating ring 504 and the oil grooves on both sides of the through hole is filled with sufficient grease 506 to provide lubrication for the overall movement of the pressure adaptive adjustment module 5, reduce friction, and improve the response speed of pressure adjustment. In a more specific embodiment, such as... Figure 4As shown, the sealing ring 501 is a pressure-resistant sealing ring; the screw 502 can be an M3×36 screw; the insulating ring 504 can be made of polytetrafluoroethylene; the skeleton 505 is made of metal; the oil groove on the sealing ring 501 is a trapezoidal groove; multiple sets of sealing rings form a back-to-back double sealing ring structure, which can withstand bidirectional high pressure; specifically, a V-type PTFE sealing ring can be used, with a maximum pressure resistance of over 60 MPa, which can adapt to water depth environments below 6000 meters.

[0024] Furthermore, the sealed rotary transmission device 2 has a power transmission component 3 and a signal transmission component 4 inside its internal cavity. The sealed rotary transmission device 2 is filled with insulating oil 1, the main purpose of which is to ensure the insulation between the non-energized channels inside the sealed rotary transmission device 2. The power transmission component 3 can transmit electrical power signals, and the signal transmission component 4 can transmit various control signals. The sealed rotary transmission device 2 can transmit electrical energy, as well as various control and communication signals, to achieve n×360° rotational transmission, which greatly expands the range of equipment that can be installed.

[0025] Furthermore, the specific configuration of the power transmission component 3 and the signal transmission component 4, such as the power channel and the signal transmission channel, can be adjusted or expanded according to usage requirements. Specifically, by adjusting the internal layout according to operational needs, various media, including but not limited to fiber optic signals, radio frequency signals, analog signals, and various bus signals, can be transmitted. This rich scalability in transmission types greatly expands the scope of application of this invention.

[0026] Furthermore, the insulating oil 1, lubricating grease 506, and other internal filling liquids used in this invention are all incompressible, which allows the pressure adaptive balancing structure constructed by this invention to achieve a large pressure change within a small volume. The interior of the pressure adaptive structure is connected to the interior of the product. When the external pressure changes, the adjustment structure can move axially to automatically adjust the internal and external pressures to be equal.

[0027] In a more specific embodiment, an optional dimensional layout of the rotary transmission device of the present invention is as follows: Figure 3 As shown.

[0028] Furthermore, the self-balancing principle of this invention lies in: focusing on pressure self-balancing, combined with the integrated dynamic seal design of the product—the axial rotation of the rotary transmission device serves as the dynamic seal, and the axial movement serves as the pressure regulating structure to achieve pressure self-balancing. Moreover, the liquid filled in this invention is incompressible, allowing the pressure adaptive balancing structure to achieve a large pressure change within a small volume. The interior of the pressure adaptive structure is connected to the interior of the product; when the external pressure changes, the adjusting structure can move axially to automatically adjust the internal and external pressures to be equal.

[0029] In summary, this invention provides a pressure-adaptive rotary transmission device suitable for deep-sea environments. It aims to provide a highly reliable rotary transmission device in deep-sea environments. Based on a sealed rotary transmission device, this device incorporates a pressure-adaptive adjustment module that dynamically adjusts in real-time according to external pressure changes. Utilizing hydraulic principles, it maintains consistent internal and external pressures during rotation, reducing pressure differences between the inside and outside of the rotary transmission device in deep-sea environments and minimizing product damage. The device includes a sealed rotary transmission device 2 and an adaptive pressure adjustment module 5. The sealed rotary transmission device 2 contains a power transmission component 3 and a signal transmission component 4. The power transmission component 3 transmits electrical power signals, and the signal transmission component 4 transmits various control signals. The sealed rotary transmission device 2 is filled with insulating oil, and a waterproof connector 6 is installed on its shell to ensure that the insulating oil remains inside the product. This invention is suitable for military applications and can meet the requirements of various environments, especially in deep-sea environments where it offers advantages such as high reliability, low torque, and long lifespan.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A pressure-adaptive rotary transmission device suitable for deep-sea environments, characterized in that, include: Sealed rotary transmission device (2) and pressure adaptive adjustment module (5). The pressure adaptive adjustment module (5) is installed inside the sealed rotary transmission device (2). The sealed rotary transmission device (2) employs multiple static seals; The sealed rotary transmission device (2) includes: an outer sleeve (201), a rotating inner shaft (202), a lower rotating end cap housing (203), and an upper rotating housing (204). The outer sleeve (201) is the outermost rotating and protective structure of the sealed rotary transmission device (2). The upper rotating shell (204) connected to the rotating inner shaft (202) is the inner rotating structure of the sealed rotating transmission device (2). The lower end cap housing (203) is disposed at one end of the outer sleeve (201). One end of the rotating inner shaft (202) passes through the lower rotating end cap housing (203) and is disposed inside the outer sleeve (201), while the other end of the rotating inner shaft (202) is connected to the upper rotating housing (204). The upper rotating shell (204) is disposed outside the outer sleeve (201); The pressure adaptive adjustment module (5) is an annular structure that is sealed between the rotating inner shaft (202) and the lower end cap housing (203).

2. The pressure-adaptive rotary transmission device suitable for deep-sea environments according to claim 1, characterized in that, As the product equipped with the rotary transmission device goes deeper and deeper into the ocean, the pressure of the external marine environment increases. At this time, the external seawater pressure acts on the outer surface of the pressure adaptive adjustment module (5). The pressure adaptive adjustment module (5) moves along the axis of the rotary transmission device toward the sealed internal cavity of the rotary transmission device (2) to compress the volume of the internal cavity of the rotary transmission device to adjust the internal pressure of the device until the internal and external pressures of the device are equal. When the product equipped with the rotary transmission device floats up from deep water, the external pressure of the rotary transmission device decreases, and the pressure adaptive adjustment module (5) extends outward along the axial direction of the rotary transmission device, so that the internal and external pressures of the adjustment device are equal.

3. The pressure-adaptive rotary transmission device suitable for deep-sea environments according to claim 1, characterized in that, The pressure adaptive adjustment module (5) includes: a sealing ring (501), a screw (502), a cover plate (503), an insulating ring (504), and a frame (505); The sealing ring (501) and the insulating ring (504) are fitted onto the frame (505); One end of the frame (505) faces the inside of the sealed rotary transmission device (2), and one end of the frame (505) is connected to a cover plate (503) by screws (502), with the cover plate facing the outside of the sealed rotary transmission device (2).

4. The pressure-adaptive rotary transmission device suitable for deep-sea environments according to claim 3, characterized in that, The frame (505) is a T-shaped beam ring support structure. One side of the T-shaped surface of the frame (505) faces the internal cavity of the sealed rotary transmission device (2). The outer ring edge of the frame (505) abuts against the inner wall of the lower rotary end cap housing (203). One side of the frame (505) faces the outside of the sealed rotary transmission device (2), and the T-shaped tail is connected by screws (502) to a cover plate (503) with a surface area equal to that of the T-shaped surface of the frame (505).

5. The pressure-adaptive rotary transmission device suitable for deep-sea environments according to claim 3, characterized in that, Two sets of sealing rings (501) are fitted on the frame (505). The sealing rings (501) of each group are set in the following manner: two sealing rings are set on both sides of the skeleton (501) in sequence from the outside to the inside along the radial direction of the pressure adaptive adjustment module (5); An insulating ring (504) is provided between the two sets of sealing rings (501). The insulating ring (504) is arranged in sequence from the outside to the inside along the radial direction of the pressure adaptive adjustment module (5) on both sides of the frame (501).

6. The pressure-adaptive rotary transmission device for deep-sea environments according to claim 5, characterized in that, The pressure adaptive adjustment module (5) also includes: grease (506). The insulating ring (504) has a through hole; The two sets of four-ring sealing rings and the insulating ring (504) are provided with oil grooves on the contact side. The space formed by the oil grooves on both sides of the through hole of the insulating ring (504) is filled with grease (506) to provide lubrication for the overall movement of the pressure adaptive adjustment module (5).

7. The pressure-adaptive rotary transmission device for deep-sea environments according to claim 6, characterized in that, The frame (505) is made of metal, and the oil groove on the sealing ring (501) is a trapezoidal groove.

8. The pressure-adaptive rotary transmission device for deep-sea environments according to claim 6, characterized in that, The sealing ring (501) is a pressure-resistant sealing ring with a minimum pressure resistance of 60 MPa; The insulating ring (504) is made of polytetrafluoroethylene.

9. The pressure-adaptive rotary transmission device for deep-sea environments according to claim 6, characterized in that, Also includes: Insulating oil (1), power transmission components (3) and signal transmission components (4). The sealed rotary transmission device (2) has a power transmission component (3) and a signal transmission component (4) installed in its internal cavity. The sealed rotary transmission device (2) is filled with insulating oil (1), which is an incompressible oil. The power transmission component (3) transmits electrical power signals, and the signal transmission component (4) transmits control signals.

10. The pressure-adaptive rotary transmission device for deep-sea environments according to claim 9, characterized in that, Also includes: Waterproof connector (6) The sealed rotary transmission device (2) is connected to external connectors on both sides by waterproof connectors (6). The waterproof connectors (6) ensure the sealing of the product and prevent the insulating oil (1) inside the sealed rotary transmission device (2) from leaking to the outside of the sealed rotary transmission device (2).

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