Sealing mechanism of underwater vehicle

Abstract

The utility model belongs to a sealing mechanism, and particularly relates to a sealing mechanism of an underwater vehicle. A sealing mechanism of an underwater vehicle can effectively resist permeation in an external high-pressure environment and can adapt to internal and external pressure difference fluctuation caused by depth changes. The sealing mechanism comprises a machine shell and the like. A connecting part is plugged into the top of the shell, the top of the connecting part is in threaded connection with an end part, and a protective shell is arranged between the bottom of the end part and the top of the shell. The lower wall of the connector is attached to the upper wall of the machine shell to form a first sealing face of the connector and the machine shell, the sealing ring in the sealing groove I forms a second sealing face of the connector and the machine shell, and complete sealing of the connector and the machine shell is achieved. The top of the isolation column abuts against the lower wall of the end cover, a first sealing face of the end and the connecting part is formed, a second sealing face of a sealing ring stroke in the sealing groove II is formed, through a multi-layer sealing structure, good sealing performance is achieved, and permeation in the external high-pressure environment can be effectively resisted.

Description

Technical Field

[0001] This utility model relates to a sealing mechanism, and more particularly to a sealing mechanism for a submarine. Background Technology

[0002] With the deepening of ocean exploration and development, submersibles (such as remotely operated vehicles (ROVs) and autonomous underwater vehicles (AUVs) are playing an increasingly important role in scientific research, resource exploration, and seabed operations. These devices typically operate in extreme environments such as high pressure, low temperature, and high salinity, thus placing extremely high demands on the sealing performance of their internal electronic components and mechanical structures. Good sealing not only protects the submersible's internal components from external environmental corrosion but also ensures its normal operation and extends its service life.

[0003] Currently, most underwater vehicles on the market use traditional sealing methods such as O-ring seals and gasket seals. However, these methods have some shortcomings in practical applications:

[0004] O-ring seals: Although they have the advantages of easy installation and low cost, leakage problems may occur during long-term use due to material aging or improper pressure distribution.

[0005] Gasket sealing: For some special shapes or large-sized connection parts, it is difficult to find suitable gaskets and the assembly process is complicated, making it difficult to ensure the consistency of sealing effect.

[0006] Therefore, there is an urgent need to develop a sealing mechanism for submarines that can effectively resist infiltration under external high pressure and adapt to pressure fluctuations caused by changes in depth. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model provides a sealing mechanism for a submarine that can effectively resist penetration under external high pressure and adapt to the fluctuation of internal and external pressure difference caused by changes in depth.

[0008] The technical solution is as follows: A sealing mechanism for a submersible includes a housing, a protective shell, a connecting part, and an end. The connecting part is inserted into the top of the housing, and the end is threadedly connected to the top of the connecting part. The protective shell is provided between the bottom of the end and the top of the housing. The connecting part includes a connector, an external threaded sleeve, a limiting block, and an isolation post. A sealing groove I is circumferentially formed on the lower part of the connector. An external threaded sleeve is concentrically formed on the top of the connector. A limiting block is provided on the inner wall of the external threaded sleeve. An isolation post is concentrically formed on the top of the connector. The end includes an end cap, an internal threaded sleeve, and a positioning block. An internal threaded sleeve is concentrically formed on the bottom of the end cap. A positioning block is provided inside the internal threaded sleeve. A sealing groove II is formed on the outer wall of the internal threaded sleeve. The outer wall of the internal threaded sleeve is a downwardly recessed slope.

[0009] Furthermore, the protective shell is a protective cover, with a stepped surface at the bottom, and the protective cover is fitted onto the outer surface of the connector.

[0010] Furthermore, the upper wall of the stepped surface at the bottom of the protective cover presses against the lower wall of the connector, and the lower wall of the stepped surface at the bottom of the protective cover presses against the top of the housing. The protective cover and the housing form the first sealing surface, and the protective cover and the connector form the second sealing surface.

[0011] Furthermore, the end portion includes an end cap, an internal threaded sleeve, and a positioning block. The bottom of the end cap is concentrically provided with an internal threaded sleeve, and the positioning block is provided inside the internal threaded sleeve. A sealing groove II is provided on the outer wall of the internal threaded sleeve, and the outer wall of the internal threaded sleeve is a downwardly recessed inclined surface.

[0012] Furthermore, the protective cover is equipped with at least two positioning cylinders, and the connector is equipped with the same number of positioning pins as the positioning cylinders.

[0013] Furthermore, the top of the positioning post is conical, and the side has a groove.

[0014] Furthermore, the protective cover is equipped with at least two wedge-shaped locking blocks, and the connector is equipped with the same number of concave buckles as the wedge-shaped locking blocks.

[0015] The beneficial effects are as follows: This utility model forms a first sealing surface between the connector and the housing by having the lower wall of the connector fit against the upper wall of the housing, and the sealing ring in the sealing groove I forms a second sealing surface between the connector and the housing, thus achieving a complete seal between the connector and the housing; the top of the isolation column rests against the lower wall of the end cover, forming a first sealing surface between the end and the connection part, and the sealing ring in the sealing groove II forms a second sealing surface. Through the multi-layer sealing structure, good sealing performance is achieved, which can effectively resist the penetration under external high pressure environment, and can also adapt to the internal and external pressure difference fluctuations caused by depth changes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is a cross-sectional view of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the protective shell of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the connecting part of this utility model.

[0021] Figure 6This is a three-dimensional structural diagram of the end of this utility model.

[0022] The components in the attached diagram are labeled as follows: 1_Main housing, 2_Protective shell, 21_Protective cover, 22_Positioning cylinder, 23_Stepped surface, 24_Wedge-shaped block, 3_Connecting part, 31_Connecting head, 32_External threaded sleeve, 33_Limiting block, 34_Positioning post, 35_Concave buckle, 36_Sealing groove I, 37_Isolation post, 4_End, 41_End cover, 42_Internal threaded sleeve, 43_Positioning block, 44_Sealing groove II. Detailed Implementation

[0023] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example: A sealing mechanism for a submarine, such as Figures 1-6 As shown, it includes a housing 1, a protective shell 2, a connecting part 3, and an end 4. The connecting part 3 is inserted into the top of the housing 1, and the end 4 is connected to the top of the connecting part 3 by a thread. The protective shell 2 is provided between the bottom of the end 4 and the top of the housing 1.

[0025] like Figure 5 As shown, the connecting part 3 includes a connector 31, an external threaded sleeve 32, a limiting block 33, and an isolation post 37. A sealing groove I 36 is provided circumferentially at the lower part of the connector 31. An external threaded sleeve 32 is concentrically provided at the top of the connector 31. A limiting block 33 is provided on the inner wall of the external threaded sleeve 32. An isolation post 37 is concentrically provided at the top of the connector 31. The isolation post 37 is annular and is located outside the external threaded sleeve 32. Before inserting the connecting part 3 into the housing 1, a sealing ring is placed in the sealing groove I 36. Then, the connecting part 3 with the sealing ring is inserted into the housing 1, and the edge of the connector 31 is pressed against the upper side of the housing 1.

[0026] like Figure 4 As shown, the protective shell 2 is a protective cover 21. The bottom of the protective cover 21 has a stepped surface 23. The protective cover 21 is fitted onto the outer surface of the connector 31. The upper wall of the stepped surface 23 at the bottom of the protective cover 21 presses against the lower wall of the connector 31. The lower wall of the stepped surface 23 at the bottom of the protective cover 21 presses against the top of the housing 1. After the end 4 is connected, the protective cover 21 and the housing 1 form the first sealing surface, and the protective cover 21 and the connector 31 form the second sealing surface, forming a double seal to improve the sealing effect.

[0027] like Figure 6As shown, end portion 4 includes end cap 41, internal threaded sleeve 42, and positioning block 43. The internal threaded sleeve 42 is concentrically arranged at the bottom of end cap 41, and the positioning block 43 is arranged inside the internal threaded sleeve 42. When the positioning block 43 rotates into contact with the limiting block 33, the internal threaded sleeve 42 cannot rotate. At this time, end portion 4 and connecting portion 3 are connected. The outer wall of internal threaded sleeve 42 is provided with sealing groove II 44. The outer wall of internal threaded sleeve 42 is a downwardly recessed slope to facilitate the installation of sealing ring in sealing groove II 44, which can be better inserted into the gap between isolation column 37 and external threaded sleeve 32. After end portion 4 is screwed into connecting portion 3, the top of isolation column 37 is pressed against the inner wall of end cap 41 to form the first sealing surface between end portion 4 and connecting portion 3. Through the sealing ring in sealing groove II 44 and isolation column 37, the connecting portion 3 and end portion 4 are completely sealed after connection.

[0028] like Figure 2 and Figure 5 As shown, at least two positioning cylinders 22 are also installed on the protective cover 21, and the connector 31 is also equipped with the same number of positioning pins 34 as the positioning cylinders 22. When the protective cover 21 is placed on top of the connector 31, the positioning pins 34 are inserted into the positioning cylinders 22. The top of the positioning pin 34 is conical, and the side has a groove. When the positioning pin 34 is inserted into the positioning cylinder 22, the conical top of the positioning pin 34 and the groove on the outer surface of the positioning pin 34 allow for a space for the outer surface of the positioning pin 34 to retract, so as to facilitate the insertion of the positioning pin 34 into the positioning cylinder 22.

[0029] like Figure 2 and Figure 5 As shown, at least two wedge-shaped blocks 24 are also installed on the protective cover 21, and the connector 31 is also equipped with the same number of concave buckles 35 as the wedge-shaped blocks 24. When the protective cover 21 is placed on top of the connector 31, the wedge-shaped blocks 24 are inserted into the concave buckles 35. Through the wedge-shaped blocks 24 and the concave buckles 35, the connection between the protective cover 21 and the connector 31 can be made more secure.

[0030] When sealing the submersible, firstly, the sealing ring is placed inside the sealing groove I 36. Then, the connector 31 is inserted into the housing 1, with the lower wall of the connector 31 fitting against the upper wall of the housing 1 to form the first sealing surface between the connector 31 and the housing 1. The sealing ring in the sealing groove I 36 forms the second sealing surface between the connector 31 and the housing 1. Next, the protective cover 21 is placed over the outer surface of the connector 31, the positioning pin 34 is inserted into the positioning cylinder 22 for positioning, and the wedge-shaped locking block 24 is engaged with the concave buckle 35, so that the protective cover 21 can be fixed on the connector 31. After the protective cover 21 is installed, the sealing ring is placed into the sealing groove II 44, and the inner threaded sleeve 42 is screwed into the outer threaded sleeve 32. When the positioning block 43 contacts the limiting block 33, the end 4 is screwed in. At this time, the top of the isolation column 37 is pressed against the lower wall of the end cover 41, forming the first sealing surface between the end 4 and the connecting part 3. The sealing ring in the sealing groove II 44 forms the second sealing surface. Through the multi-layer sealing structure, good sealing performance is achieved, which can effectively resist the penetration under the external high pressure environment, and can also adapt to the internal and external pressure difference fluctuations caused by the change in depth.

[0031] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A sealing mechanism of a submersible vehicle, comprising a machine shell (1), a protective shell (2), a connecting part (3) and an end part (4), the machine shell (1) is provided with the connecting part (3) in a plug-in manner at the top, the connecting part (3) is provided with the end part (4) in a threaded connection manner at the top, and the protective shell (2) is arranged between the bottom of the end part (4) and the top of the machine shell (1), characterized in that, The connecting part (3) comprises a connecting head (31), an outer thread sleeve (32), a limiting block (33) and an isolation column (37), the lower part of the connecting head (31) is provided with a sealing groove I (36) in the circumference, the top of the connecting head (31) is provided with the outer thread sleeve (32) concentrically, the inner wall of the outer thread sleeve (32) is provided with the limiting block (33), the top of the connecting head (31) is provided with the isolation column (37) concentrically; the end part (4) comprises an end cover (41), an inner thread sleeve (42) and a positioning block (43), the bottom of the end cover (41) is provided with the inner thread sleeve (42) concentrically, the inner thread sleeve (42) is provided with the positioning block (43) inside, the outer wall of the inner thread sleeve (42) is provided with a sealing groove II (44), and the outer wall of the inner thread sleeve (42) is a downwardly recessed inclined surface.

2. A seal mechanism for a submersible vehicle according to claim 1, wherein, The protective shell (2) is a protective cover (21), the bottom of the protective cover (21) is provided with a stepped surface (23), and the protective cover (21) is sleeved on the outer surface of the connecting head (31).

3. A seal mechanism for a submersible vehicle according to claim 2, wherein, The upper wall of the stepped surface (23) at the bottom of the protective cover (21) is pressed above the lower wall of the connecting head (31), the lower wall of the stepped surface (23) at the bottom of the protective cover (21) is pressed on the top of the casing (1), the protective cover (21) and the casing (1) form a first sealing surface, and the protective cover (21) and the connecting head (31) form a second sealing surface.

4. A seal mechanism for a submersible vehicle according to claim 3, wherein, The protective cover (21) is further provided with at least two positioning cylinders (22), and the connecting head (31) is further provided with positioning columns (34) with the same number as the positioning cylinders (22).

5. A seal mechanism for a submersible vehicle according to claim 4, wherein, The top of the positioning column (34) is a conical surface, and the side surface is provided with a groove.

6. A seal mechanism for a submersible vehicle according to claim 5, wherein, The protective cover (21) is further provided with at least two wedge-shaped clamping blocks (24), and the connecting head (31) is further provided with concave buckles (35) with the same number as the wedge-shaped clamping blocks (24).

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