阅读说明：本技术 一种海底采油隔水管防护装置 (Subsea production riser protector ) 是由 金国林 夏其中 金鑫 江俊西 乔东湘 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种海底采油隔水管防护装置,包括隔水管本体,所述隔水管本体表面设有至少一个环槽,所述环槽内设有环套,所述环套表面设有多根垂直设置的扰流杆,相邻两根隔水管本体连接处设有法兰,两个法兰之间设有软管,两个法兰之间通过弹簧钢螺栓连接,法兰相对面上设有监控探头,本发明所述的防护装置,能够保护隔水管,特别是接头处,结构简单,方便更换,适用性强,成本低。(The invention discloses a marine riser protection device for subsea production, which comprises a marine riser body, wherein at least one annular groove is formed in the surface of the marine riser body, a ring sleeve is arranged in the annular groove, a plurality of vertically arranged turbulence rods are arranged on the surface of the ring sleeve, flanges are arranged at the joint of two adjacent marine riser bodies, a hose is arranged between the two flanges, the two flanges are connected through spring steel bolts, and a monitoring probe is arranged on the opposite surface of each flange.)

1. The utility model provides a subsea production riser protector which characterized in that: including the marine riser body, marine riser body surface is equipped with at least one annular, be equipped with the ring cover in the annular, the ring cover surface is equipped with the vortex pole of many perpendicular settings, and two adjacent marine riser body junctions are equipped with the flange, are equipped with the hose between two flanges, pass through spring steel bolted connection between two flanges, are equipped with monitor on the flange opposite face.

2. The subsea production riser protection device of claim 1, wherein: the ring sleeve is formed by combining two semicircular sleeves.

3. The subsea production riser protection device of claim 1, wherein: the inner wall of the ring sleeve is convex.

4. The subsea production riser protection device of claim 1, wherein: the cross section of the spoiler rod is circular.

5. The subsea production riser protection device of claim 1, wherein: the two flanges are connected through 4-8 spring steel bolts, and the 4-8 spring steel bolts are uniformly distributed on the outer side of the hose.

6. The subsea production riser protection device of claim 1, wherein: the height of the ring groove is greater than that of the ring sleeve.

7. The subsea production riser protection device of claim 1, wherein: the hose is a polytetrafluoroethylene hose, and the thickness of the hose is larger than 6 mm.

8. The subsea production riser protection device of claim 1, wherein: the flange is a plate type flat welding flange.

Technical Field

The invention belongs to the field of marine risers, and particularly relates to a marine riser protection device for subsea production.

Background

The riser is an important and weak link in the whole marine drilling equipment, connects the steel pipes of the subsea blowout preventer stack and the floating offshore drilling rig, and is mainly used for isolating seawater, leading in a drilling tool and a casing pipe, and forming a channel for mud circulation. When the marine riser works in the sea, the marine riser can continuously receive the action of composite loads such as waves, ocean currents, vortexes and the like, the marine riser (particularly at a joint) can generate deformation and vibration in a certain range, when the force is larger than the bearing range of the marine riser, the marine riser can be broken and deformed to cause safety accidents, the marine environment can be polluted to cause influence which is difficult to recover, and the defects that the existing vortex-induced vibration suppression device is high in cost, complex in manufacturing process, heavy in weight, complex in installation, inconvenient in field implementation and operation and the like exist, and improvement is needed.

Disclosure of Invention

In order to solve the problems, the invention discloses a marine riser protection device for subsea production, which can protect a marine riser, particularly a joint, and has the advantages of simple structure, convenience in replacement, strong applicability and low cost.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a subsea production riser protector, includes the riser body, riser body surface is equipped with at least one annular, be equipped with the ring cover in the annular, the ring cover surface is equipped with many perpendicular vortex poles that set up, and two adjacent riser body junctions are equipped with the flange, are equipped with the hose between two flanges, pass through spring steel bolted connection between two flanges, are equipped with monitor on the flange opposite face.

As an improvement of the invention, the ring sleeve is formed by combining two semicircular sleeves.

As an improvement of the invention, the inner wall of the ring sleeve is convex.

As an improvement of the invention, the cross section of the spoiler rod is circular.

As an improvement of the invention, the two flanges are connected through 4-8 spring steel bolts, and 4-8 spring steel bolts are uniformly distributed on the outer side of the hose.

As a refinement of the invention, the height of the ring groove is greater than the height of the ring sleeve.

As an improvement of the invention, the hose is a polytetrafluoroethylene hose, and the thickness of the hose is more than 6 mm.

As an improvement of the invention, the flange is a plate type flat welding flange.

The invention has the beneficial effects that:

(1) the surface of the marine riser is provided with a ring sleeve, the surface of the ring sleeve is provided with a plurality of vertically arranged turbulence rods, when vortices attack, the impact of the vortices can be weakened by the plurality of turbulence rods arranged in different directions, and if the vortex strength is high, the ring sleeve can be pushed to rotate to unload strong impact force, so that the marine riser inside is protected;

(2) the hose is arranged between two adjacent marine risers, the two flanges are connected through a plurality of spring steel bolts, and the hose faces vortex or ocean current impact, the joints of the two marine risers can bear bending in a certain range, so that the hose can adapt to the complexity of ocean currents on the seabed and nonlinear deformation of the self structures of the marine risers, and the service life is long;

(3) the monitoring probes are arranged on the opposite surfaces of the flanges, so that the spring steel bolts are broken or the hoses are broken, and the spring steel bolts can be replaced and maintained in time;

(4) the hose is a polytetrafluoroethylene hose, can generate certain plastic deformation and is corrosion-resistant.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a cuff according to the present invention.

FIG. 3 is a schematic view of the ring sleeve and ring groove of the present invention.

List of reference numerals:

1. the marine riser comprises a marine riser body, 2, ring grooves, 3, a ring sleeve, 4, a turbulence rod, 5, a flange, 6, a hose, 7, a spring steel bolt, 8, a monitoring probe, 9 and an outward convex type.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in the figure, the marine riser protection device for subsea production comprises a marine riser body 1, wherein at least one annular groove 2 is formed in the surface of the marine riser body 1, an annular sleeve 3 is arranged in the annular groove, a plurality of vertically arranged turbulence rods 4 are arranged on the surface of the annular sleeve 3, when vortices attack, the impact of the vortices can be weakened by the turbulence rods 4 arranged in different directions, and if the vortex strength is high, the annular sleeve 3 can be pushed to rotate to unload strong impact force, so that an internal marine riser is protected.

The connecting part of two adjacent riser bodies 1 is provided with the flange 5, the hose 6 is arranged between the two flanges 5, the two flanges 5 are connected through the spring steel bolt 7, and the two flanges can bear bending in a certain range in the face of vortex or ocean current impact, so that the marine riser can adapt to the complexity of ocean currents on the seabed and nonlinear deformation of the structure of the riser, and is long in service life; after the marine current is impacted, the joints of the two marine riser can be rebounded to the initial vertical state under the action of the spring steel, and the normal operation is ensured.

The monitoring probe 8 is arranged on the opposite surface of the flange 5, so that the spring steel bolt can be timely replaced and maintained after the spring steel bolt is broken or the hose is broken

The ring sleeve 3 is formed by combining two semicircular sleeves, and is convenient to replace and maintain.

The inner wall of the ring sleeve 3 is convex 9, as shown in figure 3, so that the ring sleeve can rotate smoothly, and the stress is relieved to protect the marine riser.

The cross section of the turbulence rod 4 is smooth and round, so that the resistance is reduced, and the turbulence rod cannot be damaged quickly.

The two flanges 5 are connected through 4-8 spring steel bolts 7, and the 4-8 spring steel bolts 7 are uniformly distributed on the outer side of the hose, so that the borne impact force can be dispersed, and the resilience force is ensured.

The height of the ring groove 2 is larger than that of the ring sleeve 3, so that the ring sleeve 3 can freely rotate in the ring groove 2.

The hose 6 is a polytetrafluoroethylene hose, has the thickness of more than 6mm, can generate certain plastic deformation, is corrosion-resistant and has long service life.

The flange 5 is a stainless steel plate type flat welding flange and can bear larger pressure.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.