Ship berthing anti-overload energy absorber for ocean platform

Abstract

The utility model relates to the technology of ocean oil and gas resource exploitation equipment, in particular to a ship berthing anti-overload energy absorber for an ocean platform, which comprises an inner cylinder and an outer cylinder which are coaxially arranged, the bottom of the outer cylinder is connected with a blind flange, and an anti-overload elastic energy absorbing body is arranged in the center of the bottom of an inner cavity of the outer cylinder. The anti-overloading elastic energy-absorbing body is arranged on the blind plate flange, the top of the anti-overloading elastic energy-absorbing body is provided with an anti-overloading collision steel plate, the rear end of the inner cylinder and the front end of the outer cylinder are connected together through the elastic energy-absorbing body, and the bottom end of the inner cylinder is provided with an inner cylinder blocking plate; when deformation of the elastic energy absorption body reaches the limit due to an emergency, impact energy is absorbed by means of compression deformation of the anti-overload elastic energy absorption body, impact force on a jacket during ship berthing is reduced, an ocean platform device is protected, and absorption of the ship berthing energy absorption device on the impact energy is improved.

Description

Technical Field

[0001] The utility model relates to marine oil and gas resource exploitation equipment technology, in particular to an anti-overload energy absorber for ship berthing on an offshore platform. Background Art

[0002] Offshore platforms are crucial equipment for the development of marine oil and gas resources. Drilling, oil and gas extraction, storage, power, communications, and navigation equipment are installed on offshore platforms, making them indispensable for offshore oil and gas resource development. The equipment used on offshore platforms and the extracted oil and gas resources need to be transported by ships. During docking, ships can collide with offshore platforms, easily damaging the platforms or ships. When a ship berths an offshore platform, it is generally necessary to install a berthing absorber on the outside of the offshore platform's jacket to absorb the energy of collision between the ship and the offshore platform, protecting the safety of the ship and the offshore platform and allowing the ship to dock smoothly on the side of the platform. Existing offshore platform ship berthing absorbers include frustum-shaped rubber bodies, elongated rubber bodies, and steel-rubber composites. These frustum-shaped and elongated rubber absorbers have the advantages of simple construction and easy installation and maintenance. However, their overall rubber body rigidity is poor, energy absorption is limited, and their lifespan is short. Due to sudden ocean conditions or abnormal berthing of the ship, the absorber can easily become overloaded, damaged, and fail. Utility Model Content

[0003] The utility model aims to provide an anti-overload energy absorber for ship berthing on an offshore platform, which can prevent the energy absorber from being overloaded and improve the absorption of impact energy by the ship berthing energy absorber.

[0004] The utility model is realized through the following technical solutions:

[0005] An anti-overload energy absorber for ship berthing on an offshore platform comprises an inner tube and an outer tube arranged coaxially, a blind flange being connected to the bottom of the outer tube, an anti-overload elastic energy absorber being arranged at the center of the bottom of the inner cavity of the outer tube, and the anti-overload elastic energy absorber being arranged on the blind flange, an anti-overload collision steel plate being arranged on the top of the anti-overload elastic energy absorber, the rear end of the inner tube and the front end of the outer tube being connected together via the elastic energy absorber, and an inner tube blocking plate being arranged at the bottom end of the inner tube.

[0006] Preferably, the inner tube and the elastic energy absorbing body are bonded together by an adhesive, and the outer tube and the elastic energy absorbing body are bonded together by an adhesive, and the bonding strength is greater than the tearing strength of the elastic energy absorbing body.

[0007] Furthermore, a plurality of semicircular annular grooves for enhancing bonding strength are regularly provided on the outer surface of the inner cylinder and the inner surface of the outer cylinder.

[0008] Furthermore, a plurality of longitudinal T-shaped grooves for enhancing bonding strength are regularly provided on the outer surface of the inner cylinder and the inner surface of the outer cylinder.

[0009] Preferably, the inner cylinder and the inner cylinder blocking plate are connected through a first fillet weld, and the outer cylinder and the blind plate flange are connected through a second fillet weld.

[0010] Preferably, the blind flange and the anti-overload elastic energy-absorbing body are bonded together by an adhesive, and the anti-overload collision steel plate and the anti-overload elastic energy-absorbing body are bonded together by an adhesive.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The ship berthing energy absorber mainly absorbs impact energy by deformation of the elastic energy absorber. However, the present application provides an anti-overload elastic energy absorber on the bottom of the inner cavity of the outer tube and the blind flange. When an emergency causes the deformation of the elastic energy absorber to reach its limit, the compression deformation of the anti-overload elastic energy absorber is used to absorb the impact energy, thereby reducing the impact force on the jacket when the ship berths, protecting the offshore platform equipment, and improving the absorption of impact energy by the ship berthing energy absorber.

[0013] (2) In the present application, the outer surface of the inner tube and the inner surface of the outer tube are processed with semicircular annular grooves or longitudinal T-grooves, which improve the bonding strength and reliability of the elastic energy absorber to the inner tube and the outer tube, improve the stability of the device itself, prevent damage to the device, and better achieve the absorption of impact energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] In the figure: 1. Inner tube; 2. Elastic energy-absorbing body; 3. Outer tube; 4. Blind flange; 5. Inner tube plugging plate; 6. Fillet weld 1; 7. Fillet weld 2; 8. Anti-overload elastic energy-absorbing body; 9. Anti-overload collision steel plate. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain rather than limit the present invention.

[0017] refer to Figure 1As shown, the utility model provides an anti-overload energy absorber for ship berthing on an offshore platform, comprising an inner tube 1 and an outer tube 3 arranged coaxially, the rear end of the inner tube 1 and the front end of the outer tube 3 are connected together by an elastic energy absorbing body 2, the bottom end of the inner tube 1 is provided with an inner tube blocking plate 5 and connected together by a fillet weld 6, the welding method can be selected from argon arc welding and double-shielded welding, and the inner tube 1 and the elastic energy absorbing body 2 are bonded together by an adhesive, and the outer tube 3 and the elastic energy absorbing body 2 are bonded together by an adhesive, and the bonding strength should be greater than the tear strength of the elastic energy absorbing body 2, and the outer surface of the inner tube 1 and the inner surface of the outer tube 3 are processed. The design of the semicircular annular groove or the longitudinal T-slot improves the bonding strength and reliability of the elastic energy absorbing body 2 and the outer tube 3. The bottom of the outer tube 3 is connected to the blind flange 4 through a fillet weld 7. The welding method can be selected from argon arc welding and two-shield welding. The center of the bottom of the inner cavity of the outer tube 3 is bonded with an anti-overload elastic energy absorbing body 8 through an adhesive, and the anti-overload elastic energy absorbing body 8 is bonded to the blind flange 4 through an adhesive. The top of the anti-overload elastic energy absorbing body 8 is bonded with an anti-overload collision steel plate 9 through an adhesive, and the energy absorber is connected to the jacket of the offshore platform through a blind flange 4.

[0018] The manufacturing process of this device is as follows:

[0019] Step 1: According to the energy absorber design drawing, use machining equipment to machine the inner tube 1 and the outer tube 3;

[0020] Step 2: Use double-container welding or manual arc welding to weld the inner tube 1 and the inner tube plugging plate 5 together, grind the weld reinforcement smooth, and perform penetrant nondestructive testing and ultrasonic nondestructive testing on the weld;

[0021] Step 3: The outer surface of the inner tube 1 and the inner surface of the outer tube 3 with the inner tube blocking plate 5, which have been welded and tested in the second step and passed the test, are sandblasted to a surface roughness of Ra6.3 to Ra12.5. After the sandblasting is completed and in a dry environment, an adhesive that matches the elastic energy absorber 2 is sprayed on the outer surface of the inner tube 1 and the inner surface of the outer tube 3;

[0022] Step 4: Install the inner cylinder 1 and outer cylinder 3 with the inner cylinder plugging plate 5 in step 3 into the rubber vulcanization mold, and inject the elastic energy absorbing body 2 through the rubber injection equipment. When the rubber overflow hole of the mold overflows the elastic energy absorbing body 2, stop the rubber injection and plug the mold overflow hole;

[0023] Step 5: Place the rubber vulcanization mold in which the elastic energy absorbing body 2 is injected in step 4 into the rubber vulcanization equipment, and perform vulcanization according to the vulcanization process parameters of the elastic energy absorbing body 2;

[0024] Step 6: After the vulcanization in step 5 is completed, wait until the temperature of the rubber fluidized bed mold drops below 60°C, then remove the mold and take out the semi-finished energy absorber;

[0025] Step 7: Referring to the contents of steps 3 to 6, the blind flange 4, the anti-overload elastic energy absorber 8 and the anti-overload collision steel plate 9 are formed into one piece by vulcanization;

[0026] Step 8: Use argon arc welding or double shielded arc welding to weld the semi-finished energy absorber in step 6 and the blind flange 4 in step 7 together, and perform penetration non-destructive testing and ultrasonic non-destructive testing on the weld.

[0027] The device operates as follows: the prepared energy absorber is connected to the jacket of an offshore platform via a blind flange 4. Impact energy is absorbed primarily through deformation of the elastic energy absorber 2. When an emergency occurs, and the severity of the emergency causes the elastic energy absorber 2 to deform to its service limit, the anti-overload elastic energy absorber 8 compresses and deforms to absorb the impact energy, thereby reducing the impact force on the jacket when the vessel is berthed and protecting the offshore platform. This application is primarily intended for use on offshore oil and gas resource extraction platforms, but can also be used in offshore wind power plants and marine aquaculture equipment.

[0028] The above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these embodiments. For ordinary technicians in the technical field of the present invention, without departing from the concept of the present invention, they can also make several simple deductions or substitutions, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. An anti-overload energy absorber for ship berthing on an offshore platform, characterized in that: The invention comprises an inner cylinder (1) and an outer cylinder (3) which are coaxially arranged, wherein the bottom of the outer cylinder (3) is connected to a blind flange (4), an anti-overload elastic energy absorbing body (8) is arranged at the center of the bottom of the inner cavity of the outer cylinder (3), and the anti-overload elastic energy absorbing body (8) is arranged on the blind flange (4), an anti-overload collision steel plate (9) is arranged on the top of the anti-overload elastic energy absorbing body (8), the rear end of the inner cylinder (1) and the front end of the outer cylinder (3) are connected together through the elastic energy absorbing body (2), and an inner cylinder blocking plate (5) is arranged at the bottom end of the inner cylinder (1).

2. The anti-overload energy absorber for ship berthing on an offshore platform according to claim 1, characterized in that: The inner tube (1) and the elastic energy absorbing body (2) are bonded together by an adhesive, and the outer tube (3) and the elastic energy absorbing body (2) are bonded together by an adhesive, and the bonding strength is greater than the tearing strength of the elastic energy absorbing body (2).

3. The anti-overload energy absorber for berthing ships on an offshore platform according to claim 2, characterized in that: The outer surface of the inner cylinder (1) and the inner surface of the outer cylinder (3) are regularly provided with a plurality of semicircular annular grooves for enhancing bonding strength.

4. The anti-overload energy absorber for berthing ships on an offshore platform according to claim 2, characterized in that: The outer surface of the inner cylinder (1) and the inner surface of the outer cylinder (3) are regularly provided with a plurality of longitudinal T-shaped grooves for enhancing bonding strength.

5. The anti-overload energy absorber for ship berthing on an offshore platform according to claim 1, characterized in that: The inner cylinder (1) is connected to the inner cylinder blocking plate (5) via a first fillet weld (6), and the outer cylinder (3) is connected to the blind flange (4) via a second fillet weld (7).

6. The anti-overload energy absorber for ship berthing on an offshore platform according to claim 1, characterized in that: The blind flange (4) and the anti-overload elastic energy absorbing body (8) are bonded together by an adhesive, and the anti-overload collision steel plate (9) and the anti-overload elastic energy absorbing body (8) are bonded together by an adhesive.

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