An underwater equipment protection cover support structure

Abstract

An underwater equipment protection cover support structure, which relates to a support leg installation structure for a cover plate used to protect underwater equipment. It mainly includes a moving structure, a base, a cover plate support leg, and a piston. During the installation process, the self-weight of the protection cover plate is used to push the piston to extrude hydraulic oil to push the moving structure, so that the moving structure moves upward to further fix the cover plate support leg. This design can be used in complex underwater installation environments, has a simple structure, and does not require divers to operate.

Description

Technical Field

[0001] The present invention relates to a support structure for a protection cover plate of an underwater device, specifically a support leg installation and support structure for protecting the cover plate of an underwater device. Background Art

[0002] With the continuous development of ocean engineering, underwater devices are increasingly widely used. Underwater devices are installed on the seabed and are threatened by underwater falling objects and trawls during long-term operation. Therefore, the protection structure of underwater devices is very important. At present, in foreign underwater engineering, it is relatively common to design the protection cover plate on the device foundation.

[0003] The underwater environment is complex, which poses high requirements for installation. At present, divers or underwater robots are usually used to assist in the installation of underwater devices. The installation operation is difficult and costly. The fixing operation of the protection cover plate support structure and the foundation structure poses high requirements for divers and underwater robots. Summary of the Invention

[0004] To solve the problems of high installation difficulty and huge installation cost of the protection cover plate of underwater devices, and considering the limited longitudinal distance of the installation connection position, a support structure for the protection cover plate of underwater devices is proposed. This structure has a certain automatic centering ability, is small in size, does not require divers to perform fixing operations, and the installation operation is simple.

[0005] The solution adopted by the present invention to solve its technical problems is: The present invention mainly consists of a base, a moving structure and a piston. The base is fixed on the underwater device foundation structure, the moving structure is concentrically fixed in the base, and the piston is assembled inside the base.

[0006] The opening position above the base is designed in a flared shape, which is beneficial to the centering installation of the support legs of the protection cover plate. The opening position and the moving structure are designed so that it is not easy to deform when the support legs of the cover plate collide during the installation process.

[0007] The sealed space formed by the piston, the base and the moving structure and the sealed space formed by the base and the movable structure are filled with hydraulic oil. During the installation process, the support legs of the protection cover plate are inserted into the base, and the piston is pushed downward by the weight of the protection cover plate. The piston squeezes the moving structure to move upward through the hydraulic oil, increasing the stability of the protection cover plate.

[0008] The beneficial effects of the present invention are: The present invention has a certain centering ability, and the centering entrance position is not easy to collide and deform. The overall support structure is small in size. During the installation process, the weight of the protection cover plate is used to push the moving structure to enhance the stability of the support legs of the protection cover plate, and the installation process does not require divers to operate. Description of the Drawings

[0009] Figure 1 It is a schematic diagram before the installation of the present invention.

[0010] Figure 2 This is the schematic diagram after the installation of the present invention.

[0011] Among them, 11 is the cover plate support leg, 12 is the support leg insertion section, 21 is the base inlet, 22 is the base inner cylinder, 23 is the base outer cylinder, 24 is the base, 25 is the sealing ring groove, 31 is the stabilizing cylinder, 32 is the ejector rod, 33 is the diversion pipe, 4 is the piston, 41 is the sealing ring groove, 5 is the sealing ring, and 6 is the sealing ring. Detailed implementation manners

[0012] As shown in Figure 1 and 2 , the upper part of the cover plate support leg 11 is connected to the protection cover plate of the subsea equipment, and it serves as the connection and support structure between the protection cover plate and its basic structure. The bottom base is a component of the subsea equipment basic structure, and it includes a base inlet 21, a base inner cylinder 22, a base outer cylinder 23, a base 24, and a sealing ring groove 25. There is also a moving component adapted to the base, which includes a stabilizing cylinder 31, an ejector rod 32, and a diversion pipe 33. In the illustrated position, there is a cylindrical space between the base inner cylinder 22 and the base outer cylinder 23 that is adapted to the cylindrical ejector rod 32. This cylindrical space is evenly distributed along the circumference, and its number is 4. Correspondingly, the number of ejector rods 32 is four. In other positions, the base inner cylinder 22 and the base outer cylinder 23 are an integral structure connected to each other. During the assembly process, first weld the other structural assemblies of the base except the base inlet 21 to the subsea equipment basic structure, then assemble the moving component, insert the ejector rod 32 into the above-mentioned cylindrical space of the base, fill hydraulic oil in this position, and then weld the base inlet 21 to the base inner cylinder 22 and the base outer cylinder 23. Then fill hydraulic oil inside the base inner cylinder 22. There are channels around the base 24 corresponding to the cylindrical space where the ejector rod 32 is assembled, so that the hydraulic oil can enter this cylindrical space from inside the base inner cylinder 22. After filling hydraulic oil inside the base inner cylinder 22, install the piston 4 inside the base inner cylinder 22 to form a sealed space between it and the ejector rod 32 inside the base inner cylinder 22.

[0013] As shown in Figure 1 and 2As shown in the figure, for easy centering installation, the insertion section 12 of the support leg below the cover plate support leg 11 is designed with a small diameter structure. During the installation process, the insertion section 12 of the support leg is inserted into the base through the base inlet 21, pushing the piston 4 downward. The hydraulic oil between the piston 4, the inner cylinder 22 of the base and the ejector rod 32 is squeezed, pushing the ejector rod 32 upward and driving the stabilizing cylinder 31 upward. During the insertion process, the sealing ring 5 installed in the sealing ring groove 41 seals the hydraulic oil. The sealing ring 6 in the sealing ring groove 25 on the outer cylinder 23 of the base and the base inlet 21 seals the hydraulic oil in the space formed by the base inlet 21, the inner cylinder 22 of the base, the stabilizing cylinder 31 and the ejector rod 32. The hydraulic oil in this sealed space is balanced through the diversion pipe 33 during the upward movement of the moving structure. When the piston 4 is pushed to the bottom and contacts the base 24, the installation is completed. At this time, the protruding part of the cover plate support leg 11 above the insertion section 12 of the support leg contacts the base inlet 21 and shares part of the weight of the protective cover plate. The stabilizing cylinder 31 moves upward to enclose the lower part of the cover plate support leg 11 to enhance the stability of the protective cover plate.

[0014] Compared with the current situation where different underwater devices need to rely on divers or underwater robots to perform docking and locking operations at the connection positions during the installation process, the docking operation of the present invention has a lower difficulty. It can only be pulled out in the vertical direction. In the case of the underwater protective cover plate being impacted by falling objects, dragged by fishing nets, disturbed by ocean currents, etc., the support structure composed of multiple devices of the present invention will be affected by the vertically downward force and other torques, and will not be affected by the vertically upward force. Therefore, no additional locking is required, reducing the installation operation difficulty and installation cost.

Claims

1. An underwater equipment protection cover support structure, characterized in that: It includes a moving structure, a base, a piston (4) and a cover plate support leg (11); the upper part of the cover plate support leg (11) is connected to the protection cover plate of the subsea equipment, and it serves as the connection and support structure between the protection cover plate and its basic structure; the moving structure, the base and the piston (4) are all assembled coaxially; the volume of the sealed space formed below the assembly position of the piston (4) is the same as the volume vacated when the moving structure moves from the lower part to the upper part of the device. The moving components include a stabilizing cylinder (31), a push rod (32) and a diversion pipe (33); there is a cylindrical space in the inner cylinder (22) of the base that is adapted to the cylindrical push rod (32), and this cylindrical space is evenly distributed along the circumference; the push rod (32) is inserted into the above-mentioned cylindrical space between the inner cylinder (22) of the base and the outer cylinder (23) of the base, and hydraulic oil is filled in this cylindrical space; after the inner cylinder (22) of the base is filled with hydraulic oil, the piston (4) is installed inside the inner cylinder (22) of the base to form a sealed space between it and the push rod (32) inside the inner cylinder (22) of the base.

2. The support structure of the underwater equipment protection cover plate according to claim 1, characterized in that, The push rod (32) is cylindrical and its number is 4.

3. The support structure of the underwater equipment protection cover plate according to claim 1 is characterized in that, The base includes a base inlet (21), an inner cylinder (22) of the base, an outer cylinder (23) of the base, a base (24) and a sealing ring groove (25); the base inlet (21) is flared; the connection mode between the base inlet (21) and the inner cylinder (22) of the base is welding. The base (24) is integrated with the outer cylinder (23) of the base and is located at the lower end of the outer cylinder (23) of the base. A sealing ring groove (25) is provided on the outer peripheral surface of the outer cylinder (23) of the base to form a seal between the outer cylinder (23) of the base and the stabilizing cylinder (31); at the base inlet (21), a sealing ring groove (25) is provided on the outer peripheral surface of the inner cylinder (22) of the base to form a seal between the inner cylinder (22) of the base and the stabilizing cylinder (31).

4. The support structure of the underwater equipment protection cover plate according to claim 1, characterized in that, The cover plate support leg (11) includes a support leg insertion section (12).

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