CN103850235B - Ocean platform pile leg protection device - Google Patents

Abstract

An offshore platform leg protection device belongs to the field of marine equipment, including an offshore platform body, a pile leg, a floating body, a spiral scraping belt, a fixing ring and a deflector. There is a floating body, a spiral scraping belt is installed under the floating body, a fixed ring is installed under the spiral scraping belt, and the fixing ring is sleeved on the pile leg, the spiral scraping belt of the present invention is wound on the pile leg, and one end is fixed on the float On the top, the float is set on the pile leg, and the ups and downs of the waves drive the float to move up and down or rotate, thereby driving the spiral scraping belt attached to the pile leg to move, thereby removing the marine organisms attached to the pile leg. The spiral scraping belt of the pile leg can not only decontaminate, but also prevent the pile leg from being damaged by the vortex street vibration generated by the ocean current on the pile leg. The leg protection device has the advantages of simple structure, unique shape and simple and convenient use.

Description

Offshore platform leg protection device

technical field

The invention relates to a protection device for pile legs of an ocean platform, belonging to the field of ocean equipment.

Background technique

Offshore platforms are structures that provide production and living facilities for activities such as drilling, oil extraction, consolidation, observation, navigation, and construction at sea. Its structural characteristics and working status can be divided into three categories: fixed type, movable type and semi-fixed type. The lower part of the fixed platform is directly supported by piles, expanded footings or other structures and fixed to the seabed. According to the support situation, it is divided into two types: pile foundation type and gravity type. The movable platform is floating in the water or supported on the seabed, and can be displaced from one well to another. According to the support, it can be divided into two types: the bottom type and the floating type. In recent years, a novel semi-fixed offshore platform is being studied, which can be fixed in deep water and has mobility, and the tension leg platform belongs to this category. Most of the platforms currently in use are equipped with legs. The firmness of the legs of an offshore platform is directly related to the safety of the platform. However, the environment in which the legs are located is harsh. Corrosion, so without protection will seriously affect its life, is currently a problem that needs to be solved urgently.

Contents of the invention

The object of the present invention is to provide a protective device for pile legs of an offshore platform.

The problem to be solved by the present invention is that the legs of the offshore platform are vulnerable to the scour and impact of waves and the secondary corrosion of marine organisms.

The leg protection device of an offshore platform includes an offshore platform body, a leg, a floating body, a spiral scraping belt, a fixing ring and a deflector. A spiral scraping belt is installed, and a fixing ring is installed under the spiral scraping belt, and the fixing ring is sleeved on the pile leg.

The spiral scraping belt has a double-lead structure, and there is a joint at the left and right ends to connect with the floating body.

A plurality of inclined deflectors are arranged on the fixed ring, which is helpful for the rotation of the spiral scraping belt.

The spiral scraping belt, the fixing ring and the legs are in clearance fit, and the clearance is 0.01 mm.

Advantages of the present invention: the spiral scraping belt is wound on the pile legs, one end is fixed on the floating body, and the floating body is sleeved on the pile legs, and the ups and downs of the waves drive the floating body to move up and down or rotate, thereby driving the water attached to the pile legs The spiral scraping belt moves to remove marine organisms attached to the legs. The spiral scraping belt of the pile leg can not only decontaminate, but also prevent the pile leg from being damaged by the vortex street vibration generated by the ocean current on the pile leg. As well as the characteristics of simple structure and unique shape, it should have a broad market space.

Description of drawings

Fig. 1 is a schematic structural view of the protection device for legs of an offshore platform of the present invention;

In the figure: 1. Offshore platform body 2. Legs 3. Floating body 4. Spiral scraping belt 5. Fixed ring 6. Baffle.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The offshore platform leg protection device includes an offshore platform body 1, a pile leg 2, a floating body 3, a spiral scraping belt 4, a fixing ring 5 and a deflector 6. The pile leg 2 is installed under the offshore platform body 1, and the pile A floating body 3 is set on the leg 2, a spiral scraping belt 4 is installed under the floating body 3, and a fixing ring 5 is installed under the spiral scraping belt 4, and the fixing ring 5 is set on the pile leg 2, which can prevent the spiral scraping The band 4 spreads outwards and cannot be closely matched with the legs 2 .

The spiral scraping belt 4 has a double-lead structure, and there is a joint at the left and right ends to connect with the floating body 3, which has the characteristics of stable structure and good decontamination effect.

The fixing ring 5 is provided with a plurality of inclined deflectors 6, which play a role in diverting the sea water, facilitate the rotation of the spiral scraping belt 4, and improve the cleaning ability.

The spiral scraping belt 4, the fixing ring 5 and the leg 2 are in clearance fit with a gap of 0.01mm, so that it can scrape off auxiliary organisms well and keep the leg intact.

The use method of the present invention: the spiral scraping belt 4 is wound on the pile leg 2, and one end is fixed on the floating body 3, and the floating body 3 is set on the pile leg 2, and the floating body 3 is moved up and down or rotated with the fluctuation of the wave so that The spiral scraping belt 4 attached to the pile leg 2 is driven to move, so as to remove the marine organisms attached to the pile leg 2 . The spiral scraping belt 4 of the pile leg 2 can not only decontaminate, but also prevent the damage to the pile leg 2 caused by the vortex vibration generated by the ocean current on the pile leg 2, and it is simple and convenient to use.

Claims (2)

1. Offshore platform leg protection device, including offshore platform body (1), pile legs (2), floating body (3), spiral scraping belt (4), fixing ring (5) and deflector (6), It is characterized in that: a pile leg (2) is installed under the ocean platform body (1), a floating body (3) is set on the pile leg (2), and a spiral scraping belt (4) is installed under the floating body (3), A fixed ring (5) is installed under the spiral scraping belt (4), and the fixed ring (5) is sleeved on the pile leg (2). The spiral scraping belt (4) has a double-lead structure, and each A joint is connected with the floating body (3), and a plurality of inclined deflectors (6) are arranged on the fixed ring (5), which facilitates the rotation of the spiral scraping belt (4). 2. The leg protection device of the offshore platform according to claim 1, characterized in that: the spiral scraping belt (4), the fixing ring (5) and the leg (2) are in clearance fit, and the clearance is 0.01mm .