Offshore platform column leg recess detection device

Abstract

The utility model discloses an offshore platform column leg recess detection device, which relates to the field of column leg detection devices and comprises two semicircular mounting racks, the surfaces of the mounting racks are connected with a winder through a pull rope, the two mounting racks are fixedly mounted through a connecting piece, each mounting rack is provided with a cavity, the inner side of each mounting rack is provided with an annular groove, and the annular grooves are connected with the winder. The annular groove is communicated with the interior of the cavity, and a semi-annular rotatable rotating rod is installed in the annular groove. According to the offshore platform column leg recess detection device, the mounting rack, the sonar and the rotating rod are arranged, when the mounting rack moves to a certain position under the sea, the mounting rack does not move, the rotating rod rotates at the moment, the sonar can be driven to carry out detection around the surface of the supporting pile by a circle, the mounting rack continues to descend after detection is completed, and the detection efficiency is improved. In the process, cooperation operation of a diver is not needed, the sonar can accurately detect the sinking condition, meanwhile, the whole supporting column can be detected more finely, and the detection quality and the detection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of column leg detection devices, in particular to a column leg depression detection device for an offshore platform. Background Art

[0002] An offshore platform is a structure that is above the sea level and has a horizontal surface. It is mainly used for various production operations and other activities at sea. With the continuous development of water conservancy, ocean, transportation and other fields, the importance of underwater detection technology for engineering structures has become increasingly prominent. Due to the complex and changeable underwater environment, engineering structures are affected by water flow, water pressure, corrosion, external forces and other factors in the water for a long time, and their conditions and performance may change. Therefore, regular underwater inspections are very necessary.

[0003] When depressions occur on the surface of underwater support piles, divers are generally required to explore and carry underwater video equipment to record the situation. However, it is difficult to visually and effectively see the location and size of the depression through diving exploration and underwater video detection methods, and human factors can easily cause the actual depression size to be inconsistent. At the same time, the underwater situation of divers when diving is unclear, which has a potential impact on the personal safety of divers. Utility Model Content

[0004] The main purpose of the utility model is to provide a device for detecting depression of an offshore platform column leg, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a device for detecting depression of column legs of an offshore platform, comprising two semi-annular mounting frames, the surface of the mounting frames is connected to a winder by a pull rope, the two mounting frames are fixedly installed by connecting pieces, the mounting frames are provided with a cavity, the inner side of the mounting frames is provided with an annular groove, the annular groove is connected to the interior of the cavity, a semi-annular, rotatable rotating rod is installed inside the annular groove, a sonar is installed on the inner side of one of the rotating rods through a connecting rod, and a clamping assembly is provided on the inner side of the mounting frames for fixing the mounting frames to the surface of the supporting piles.

[0006] The rotating rod is a gear rod, a motor is installed inside the cavity, a gear is fixedly sleeved on the surface of the output shaft of the motor, and the gear is meshed with the teeth of the rotating rod.

[0007] An arc-shaped sealing plate is fixedly installed on the inner wall of the cavity, wherein a circular groove is opened on the surface of one of the sealing plates, and a sealing bearing is fixedly installed inside the circular groove. The motor is installed below the sealing plate, and the output shaft of the motor is fixed to the inner wall of the sealing bearing.

[0008] A pump is installed on the surface of the mounting frame corresponding to the other sealing plate, and the pump is connected to the space below the sealing plate of the cavity.

[0009] The clamping assembly comprises a plurality of mounting tubes, the plurality of mounting tubes are fixed inside the mounting frame, a spring and a roller frame are fixedly installed inside the mounting tubes, and one end of the spring is fixed on the surface of the roller frame.

[0010] An arc-shaped mounting plate is fixedly connected to the lower surface of the mounting frame, and a cleaning cotton is fixedly connected to the inner side of the mounting plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, by setting a mounting frame, sonar and a rotating rod, the mounting frame is moved to the bottom of the sea. When it moves to a certain position, the mounting frame does not move. At this time, the rotating rod rotates, which can drive the sonar to go around the surface of the support pile for detection. After the detection, the mounting frame continues to descend. During this process, the diver does not need to cooperate with the operation. The sonar can accurately detect the depression and can more finely detect the entire support column, thereby improving the detection quality and efficiency.

[0013] 2. In the utility model, by setting a motor, a sealed bearing and a sealing plate, the motor starts to drive the gear to rotate, and the gear can make the rotating rod rotate, thereby driving the sonar to move around the supporting pile. The sealed bearing and the sealing plate protect the motor to prevent water from entering the lower part of the cavity, and at the same time ensure the normal rotation of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a device for detecting depression of an offshore platform column leg according to the utility model;

[0015] Figure 2 This is a schematic diagram of the cleaning cotton position part of a device for detecting depression of an offshore platform column leg according to the utility model;

[0016] Figure 3 This is a schematic diagram of the gear position structure of a device for detecting depression of an offshore platform column leg according to the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the annular groove position of a column leg depression detection device for an offshore platform according to the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the spring position part of a device for detecting depression of an offshore platform column leg according to the utility model;

[0019] Figure 6 It is a partial cross-sectional structural schematic diagram of the installation frame position of an offshore platform column leg depression detection device according to the utility model.

[0020] In the figure: 1. mounting frame; 2. pull rope; 3. winder; 4. cavity; 5. annular groove; 6. rotating rod; 7. sonar; 8. motor; 9. gear; 10. sealing plate; 11. circular groove; 12. sealed bearing; 13. pump; 14. mounting tube; 15. spring; 16. roller frame; 17. mounting plate; 18. cleaning cotton. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-6 As shown, a device for detecting depression of column legs of an offshore platform comprises two semi-annular mounting frames 1, the surface of the mounting frames 1 is connected with a winder 3 through a pull rope 2, the winder 3 can reel in and unreel the pull rope 2, and the winder 3 needs to be installed on the platform when in use, the two mounting frames 1 are fixedly installed through connecting members, and the connecting members are bolts and nuts, the mounting frame 1 is provided with a cavity 4, an annular groove 5 is opened on the inner side of the mounting frame 1, the interiors of the two annular grooves 5 are connected, the annular groove 5 and the interior of the cavity 4 are connected, a semi-annular, rotatable rotating rod 6 is installed inside the annular groove 5, a sonar 7 is installed on the inner side of one of the rotating rods 6 through a connecting rod, and a clamping assembly is provided on the inner side of the mounting frame 1 for fixing the mounting frame 1 on the surface of the supporting pile.

[0023] The mounting frame 1 is sleeved on the surface of the supporting pile to be inspected and installed with bolts and nuts. The winder 3 is installed on the platform. At this time, the winder 3 is unwound and falls with the gravity of the mounting frame 1 itself until it moves to the bottom of the sea. In this process, when it moves to a certain position, the mounting frame 1 does not move. At this time, the rotating rod 6 rotates, which can drive the sonar 7 to go around the surface of the supporting pile for inspection. After the inspection is completed, the mounting frame 1 continues to descend and repeats the above-mentioned inspection steps. During this process, no diver is required to cooperate with the operation. The sonar 7 can accurately detect the depression and can more finely inspect the entire supporting column, thereby improving the inspection quality and efficiency.

[0024] The rotating rod 6 is a gear rod, and a motor 8 is installed inside the cavity 4. A gear 9 is fixedly sleeved on the surface of the output shaft of the motor 8. The gear 9 meshes with the teeth of the rotating rod 6. When the motor 8 is started, the gear 9 is driven to rotate. The gear 9 can make the rotating rod 6 rotate, thereby driving the sonar 7 to move around the supporting pile.

[0025] An arc-shaped sealing plate 10 is fixedly installed on the inner wall of the cavity 4, and a circular groove 11 is opened on the surface of one of the sealing plates 10. A sealing bearing 12 is fixedly installed inside the circular groove 11. The motor 8 is installed below the sealing plate 10, and the output shaft of the motor 8 is fixed to the inner wall of the sealing bearing 12. The sealing bearing 12 and the sealing plate 10 protect the motor 8 to prevent water from entering the lower half of the cavity 4, while also ensuring the normal rotation of the gear 9.

[0026] A pump 13 is installed on the surface of the mounting frame 1 corresponding to the other sealing plate 10. The pump 13 is connected to the space below the sealing plate 10 of the cavity 4. When the pump 13 is started, seawater can be sucked into the interior of the mounting frame 1, thereby increasing the deadweight of the mounting frame 1 and accelerating the falling of the mounting frame 1. When the mounting frame 1 rises, the seawater is discharged through the pump 13 to reduce the tension of the pull rope 2.

[0027] The clamping assembly includes a plurality of mounting tubes 14, and the plurality of mounting tubes 14 are fixed inside the mounting frame 1. A spring 15 and a roller frame 16 are fixedly installed inside the mounting tube 14. One end of the spring 15 is fixed to the surface of the roller frame 16. The spring 15 is always in a compressed state during use. The elastic force of the spring 15 ensures that the roller frame 16 is against the surface of the supporting pile, ensuring that the center of the mounting frame 1 and the center of the supporting pile are on the same vertical line, thereby indirectly ensuring the detection stability of the sonar 7.

[0028] An arc-shaped mounting plate 17 is fixedly connected to the lower surface of the mounting frame 1, and a cleaning cotton 18 is fixedly connected to the inner side of the mounting plate 17. Since the supporting piles are used under the sea for a long time, more microorganisms and debris will be generated on the surface, which will cause certain damage to the supporting piles over a long period of time. The cleaning cotton 18 is used to clean the surface to increase the service life of the supporting piles.

[0029] It should be noted that the utility model is a device for detecting depression of column legs of an offshore platform. When in use, the mounting frame 1 is sleeved on the surface of the supporting pile to be detected and installed by bolts and nuts. The winder 3 is installed on the platform. At this time, the winder 3 is unwound, and as the mounting frame 1 falls due to its own gravity, the pump 13 is started to suck seawater into the interior of the mounting frame 1, thereby increasing the deadweight of the mounting frame 1 and accelerating the fall of the mounting frame 1. During this process, the spring 15 is always in a compressed state. The elastic force of the spring 15 ensures that the roller frame 16 is against the surface of the supporting pile, ensuring that the center of the mounting frame 1 is on the same vertical line as the center of the supporting pile. When the mounting frame 1 moves to a certain position, it does not move, and the motor 8 starts to drive the gear 9 to rotate. The gear 9 can make the rotating rod 6 rotate, thereby driving the sonar 7 to move around the supporting pile. After the detection is completed, the mounting frame 1 continues to descend and repeats the above-mentioned detection steps.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An offshore platform column leg dent detection device, comprising two semi-annular mounting frames (1), the surfaces of the mounting frames (1) being connected to a winder (3) via a pull rope (2), the two mounting frames (1) being fixedly mounted via a connecting piece, characterized in that: The mounting frame (1) is provided with a cavity (4), an annular groove (5) is provided on the inner side of the mounting frame (1), the annular groove (5) is communicated with the interior of the cavity (4), a semi-annular, rotatable rotating rod (6) is installed inside the annular groove (5), a sonar (7) is installed on the inner side of one of the rotating rods (6) via a connecting rod, and a clamping assembly is provided on the inner side of the mounting frame (1) for fixing the mounting frame (1) on the surface of a supporting pile.

2. The offshore platform column leg depression detection device according to claim 1, characterized in that: The rotating rod (6) is a gear rod, a motor (8) is installed inside the cavity (4), a gear (9) is fixedly sleeved on the surface of the output shaft of the motor (8), and the gear (9) meshes with the teeth of the rotating rod (6).

3. The offshore platform column leg depression detection device according to claim 2, characterized in that: An arc-shaped sealing plate (10) is fixedly mounted on the inner wall of the cavity (4), a circular groove (11) is provided on the surface of one of the sealing plates (10), a sealing bearing (12) is fixedly mounted inside the circular groove (11), the motor (8) is mounted below the sealing plate (10), and the output shaft of the motor (8) is fixed to the inner wall of the sealing bearing (12).

4. The offshore platform column leg depression detection device according to claim 3, characterized in that: A pump (13) is installed on the surface of the mounting frame (1) corresponding to the other sealing plate (10), and the pump (13) is connected to the space below the sealing plate (10) of the cavity (4).

5. The offshore platform column leg depression detection device according to claim 1, characterized in that: The clamping assembly comprises a plurality of mounting tubes (14), wherein the plurality of mounting tubes (14) are fixed inside a mounting frame (1), a spring (15) and a roller frame (16) are fixedly installed inside the mounting tubes (14), and one end of the spring (15) is fixed to the surface of the roller frame (16).

6. The offshore platform column leg depression detection device according to claim 1, characterized in that: An arc-shaped mounting plate (17) is fixedly connected to the lower surface of the mounting frame (1), and a cleaning cotton (18) is fixedly connected to the inner side of the mounting plate (17).

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