Subsea rotating seal device

Abstract

The application provides an underwater rotary sealing device, which comprises a rubber shell, a bottom plate and a brake lever; the rubber shell is assembled on the bottom plate; a pin connecting hole and an avoiding groove are formed on the rubber shell; a pin through hole and a brake through hole are formed on the bottom plate; a blocking strip is arranged on the bottom plate and close to the brake through hole; a torsional spring is installed between the bottom plate and the rubber shell; under the action of the torsional spring, the pin connecting hole and the pin through hole are mutually dislocated, and one end face of the avoiding groove is in abutment with the blocking strip; the end face of the brake lever is a wedge face; when the brake lever passes through the brake through hole and the wedge face of the brake lever is in contact with the end face of the avoiding groove abutting against the blocking strip, the rubber shell rotates around the bottom plate, and the pin connecting hole and the pin through hole are communicated. The torsional spring is used to dislocate the pin connecting hole and the pin through hole, and to seal the underwater rotary sealing device.

Description

Technical Field

[0001] This invention relates to the field of deep-sea sealing technology, and in particular to an underwater rotary sealing device. Background Technology

[0002] With major companies exploring and exploiting deep-sea resources, the number of marine engineering equipment is increasing. For some marine engineering equipment, underwater sealing methods have become one of the key technologies.

[0003] my country started relatively late in the field of underwater connectors. Due to the lack of sealing methods, there is an urgent need for an underwater sealing device with good sealing performance in deep-sea environments. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose an underwater rotary sealing device that can ensure the sealing state when optical fibers or cables are connected or disconnected in the high-pressure environment of the deep sea.

[0005] To achieve the above objectives, the present invention adopts the following specific technical solution: The underwater rotating sealing device provided by this invention includes a rubber shell, a base plate, and a brake rod. The rubber shell is mounted on the base plate and has a pin connection hole and a clearance groove. The base plate has a pin through hole and a brake through hole. A stop bar is positioned on the base plate close to the brake through hole. A torsion spring is installed between the base plate and the rubber shell. Under the action of the torsion spring, the pin connection hole and the pin through hole are misaligned, and one end face of the clearance groove abuts against the stop bar. The end face of the brake rod is a wedge surface. When the brake rod passes through the brake through hole, and the wedge surface of the brake rod abuts against the end face of the stop bar, the rubber shell rotates around the base plate, achieving communication between the pin connection hole and the pin through hole.

[0006] Preferably, a slot is provided on the end face of the clearance groove that abuts against the stop bar, so that a gap is formed between the stop bar and the end face of the clearance groove.

[0007] Preferably, a pivot is formed at the center of the base plate, and a rotating through hole is provided at the center of the rubber shell for the pivot to pass through. The rubber shell is assembled onto the base plate by the cooperation of the rotating through hole and the pivot.

[0008] Preferably, an end cap groove is provided on the side of the rubber shell facing away from the base plate, and an end cap is fastened in the end cap groove.

[0009] Preferably, a torsion spring assembly groove is provided on the side of the rubber shell facing the base plate, and a torsion spring mounting groove is provided around the rotating shaft on the side of the base plate facing the rubber shell, with the two ends of the torsion spring respectively installed in the torsion spring assembly groove and the torsion spring mounting groove.

[0010] Preferably, the pin through holes are symmetrically distributed radially along the axis of rotation, and the pin connecting holes are symmetrically distributed radially along the rotating through holes.

[0011] Preferably, the pin through holes are uniformly distributed along the circumference of the rotating shaft, and the pin connecting holes are uniformly distributed along the circumference of the rotating through holes.

[0012] Preferably, the brake lever is a prism and / or a cylinder.

[0013] The present invention can achieve the following technical effects: 1. The underwater rotary sealing device achieves sealing by misaligning the pin connection hole and the pin through hole through the torque applied at both ends of the torsion spring; 2. The slot on the end face of the clearance groove can form a gap between the end face of the clearance groove and the stop bar, which facilitates the insertion of the brake rod and is beneficial to driving the rubber shell to rotate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the underwater rotary sealing device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the split structure of the underwater rotary sealing device provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the base plate provided according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the rubber shell provided according to an embodiment of the present invention.

[0015] The reference numerals in the attached drawings include: base plate 1, pin through hole 11, rotating shaft 12, brake through hole 13, stop bar 14, torsion spring mounting groove 15, rubber sealing block 2, pin connection hole 21, rotating through hole 22, end cover groove 23, torsion spring assembly groove 24, clearance groove 25, slot 251, torsion spring 3, brake lever 4, and end cover 5. Detailed Implementation

[0016] In the following description, embodiments of the invention will be described with reference to the accompanying drawings. In the description below, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0018] Figures 1-4 The overall structure, the split structure, and the structure of the base plate and the rubber shell of the underwater rotary sealing device provided in the embodiments of the present invention are shown respectively.

[0019] like Figures 1-4 As shown, the underwater rotating sealing device provided in this embodiment of the invention includes: a base plate 1, a rubber sealing block 2, a torsion spring 3, a brake rod 4, and an end cap 5. The rubber sealing block 2 is mounted on the base plate 1 and can rotate around the base plate 1. A pin through hole 11 is provided on the base plate 1, and a pin connection hole 21 is provided on the rubber sealing block 2. The torsion spring 3 is installed between the base plate 1 and the rubber sealing block 2. The two ends of the torsion spring 3 abut against the base plate 1 and the rubber sealing block 2, respectively. The torsion spring 3 is used to apply torque to the base plate 1 and the rubber sealing block 2, so that the pin through hole 11 and the pin connection hole 21 are misaligned with each other, ensuring that seawater cannot pass through between the pin through hole 11 and the pin connection hole 21.

[0020] The rubber sealing block 2 is adapted to the shape of the base plate 1. The figure shows that the rubber sealing block 2 and the base plate 1 are circular. Of course, the shape of the rubber sealing block 2 and the base plate 1 is not limited to circular. They can also be square, polygonal, or other shapes.

[0021] A rotating shaft 12 is formed at the center of the base plate 1 to enable the rubber sealing block 2 to rotate. A brake through hole 13 is also provided on the base plate 1 for the brake rod 4 to pass through. A stop strip 14 for limiting the rubber sealing block 2 is provided on the base plate 1 in close contact with the brake rod through hole 13. A torsion spring mounting groove 15 for mounting the torsion spring 3 is provided on the side of the base plate 1 facing the rubber shell 2 and around the rotating shaft 12.

[0022] A rotating through hole 22 is provided at the center of the rubber shell 2. The diameter of the rotating through hole 22 is slightly larger than the diameter of the rotating shaft 12, so that the rotating shaft 12 can pass through the rotating through hole 22. The assembly of the rubber shell 2 and the base plate 1 is realized through the cooperation between the rotating shaft 12 and the rotating through hole 22.

[0023] An end cap groove 23 is provided on the side of the rubber shell 2 facing away from the base plate 1. The end cap 5 is fastened in the end cap groove 23 to prevent the rubber shell 2 from falling off the rotating shaft 12.

[0024] The length of the rotating shaft 12 is less than or equal to the difference between the thickness of the rubber sealing block 2 and the groove depth of the end cover groove 23, ensuring that the end cover 5 can be fastened onto the end cover groove 23.

[0025] A torsion spring mounting groove 24 is provided on the side of the rubber shell 2 facing the base plate 1, corresponding to the position of the torsion spring mounting groove 15. When the base plate 1 and the rubber shell 2 are assembled together, the torsion spring mounting groove 15 and the torsion spring mounting groove 24 form the mounting space for the torsion spring 3. One end of the torsion spring 3 is installed in the torsion spring mounting groove 15, and the other end of the torsion spring 3 is installed in the torsion spring mounting groove 24. Without the action of external force, the torque applied by the two ends of the torsion spring 3 can make the rubber shell 2 rotate around the rotating shaft 12 (for ease of description, the rotation of the rubber shell 2 under the force of the torsion spring 3 is called clockwise rotation), thereby causing the pin through hole 11 and the pin connection hole 21 to be misaligned.

[0026] A clearance groove 25 is also provided on the rubber shell 2 to provide clearance space for the brake lever 4. Under the action of the torsion spring 3, the pin through hole 11 and the pin connection hole 21 are misaligned, and the clearance groove 25 and the brake through hole 13 are also misaligned to prevent seawater from passing through the brake through hole 13 and the clearance groove 25. The clearance groove 25 can be fan-shaped, square, triangular, etc. The figure shows a fan-shaped structure, in which the clearance groove 25 makes the rubber shell 2 form a fan-shaped notch.

[0027] The stop bar 14 abuts against the A end face of the clearance groove 25 to prevent the rubber housing 2 from rotating excessively. If the rubber housing 2 rotates excessively, the A end face will not coincide with the brake through hole 13. Then, after the brake lever 4 is inserted into the brake through hole 13, it cannot extend out of the clearance groove 25, and thus cannot drive the rubber housing 2 to rotate counterclockwise.

[0028] In order to facilitate the brake lever 4 to extend from the clearance groove 25, a slot 251 is provided on the A end face of the clearance groove 25. The slot 251 creates a gap between the stop bar 14 and the A end face, so that the brake lever 4 can extend from the clearance groove 25.

[0029] The shape of the brake through hole 13 is adapted to the shape of the brake lever 4. The brake lever 4 can be a cylindrical structure, a prism structure, or a combination of a cylinder and a prism. The figure shows the case where the brake lever 4 is a combination of a cylinder and a prism. One part of the brake lever 4 is a cylinder and the other part is a quadrangular prism. The quadrangular prism part is inserted into the brake through hole 13 and passes through the clearance groove 25. Therefore, the shape of the brake through hole 13 is a quadrilateral that is adapted to the quadrangular prism.

[0030] The end face of the brake lever 4 inserted into the brake through hole 13 is a wedge surface. When the wedge surface contacts the A end face of the clearance groove 25, the rubber shell 2 can rotate around the rotating shaft 12.

[0031] The above details the structure of the underwater rotary sealing device provided in the embodiments of the present invention. The working principle of the underwater rotary sealing device is as follows: When the brake lever 4 is not inserted into the brake through hole 13, the torque applied by the torsion spring 3 causes the rubber shell 2 to rotate clockwise around the rotating shaft 12, causing the pin through hole 11 and the pin connection hole 21 to be misaligned, and the underwater rotary sealing device is in a sealed state.

[0032] When the brake lever 4 is inserted into the brake through hole 13, and the wedge surface of the brake lever 4 contacts the A end face of the clearance groove 25, the rubber shell 2 rotates counterclockwise around the rotating shaft 11, and the pin connection hole connects with the pin through hole, so that the pin of the optical fiber or cable can pass through smoothly to achieve docking.

[0033] When the brake lever 4 is pulled out, the rubber housing 2 is reset under the force of the torsion spring 3, the pin through hole 11 and the pin connection hole 21 are misaligned again, and the underwater rotary sealing device is sealed again.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0036] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An underwater rotary sealing device, characterized in that, Includes a rubber shell, a base plate, and a brake lever; among which, The rubber shell is assembled on the base plate. A pin connection hole and a clearance groove are provided on the rubber shell. A pin through hole and a brake through hole are provided on the base plate. A stop bar is provided on the base plate in close contact with the brake through hole. A slot is provided on the A end face of the clearance groove that abuts against the stop bar, so that a gap is formed between the stop bar and the A end face of the clearance groove. A torsion spring is installed between the base plate and the rubber shell. Under the action of the torsion spring, the pin connection hole and the pin through hole are misaligned, and one end face of the clearance groove abuts against the stop bar. A pivot is formed at the center of the base plate, and a rotation through hole is provided at the center of the rubber shell for the pivot to pass through. The rubber shell is assembled onto the base plate through the cooperation of the rotation through hole and the pivot. The end face of the brake lever is a wedge face. When the brake lever passes through the brake through hole and the wedge face of the brake lever abuts against the end face of the stop bar with the relief groove, the rubber shell rotates around the base plate to realize the connection between the pin connection hole and the pin through hole. When the brake lever is not inserted into the brake through hole, the torque applied by the torsion spring causes the rubber shell to rotate clockwise around the rotating shaft, causing the pin through hole and the pin connection hole to misalign, and the underwater rotary sealing device to be in a sealed state. When the brake lever is inserted into the brake through hole, and the wedge surface of the brake lever contacts the A end face of the clearance groove, the rubber shell rotates counterclockwise around the rotating shaft, and the pin connection hole connects with the pin through hole, allowing the pin of the optical fiber or cable to pass through smoothly to achieve docking. When the brake lever is pulled out, the rubber housing returns to its original position under the force of the torsion spring, the pin through hole and the pin connection hole are misaligned again, and the underwater rotary sealing device is sealed again.

2. The underwater rotary sealing device as described in claim 1, characterized in that, An end cap groove is provided on the side of the rubber shell opposite to the base plate, and an end cap is fastened in the end cap groove.

3. The underwater rotary sealing device as described in claim 2, characterized in that, A torsion spring mounting groove is provided on the side of the rubber shell facing the base plate, and a torsion spring mounting groove is provided around the rotating shaft on the side of the base plate facing the rubber shell. The two ends of the torsion spring are respectively installed in the torsion spring mounting groove and the torsion spring mounting groove.

4. The underwater rotary sealing device as described in claim 3, characterized in that, The pin through holes are symmetrically distributed radially along the rotating shaft, and the pin connection holes are symmetrically distributed radially along the rotating through holes.

5. The underwater rotary sealing device as described in claim 3, characterized in that, The pin through holes are uniformly distributed along the circumference of the rotating shaft, and the pin connecting holes are uniformly distributed along the circumference of the rotating through holes.

6. The underwater rotary sealing device as described in claim 1, characterized in that, The brake lever is a prism and / or a cylinder.

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