A kind of mooring line automatic detection device
Technical field
The utility model relates to a kind of mooring line pick-up unit, particularly a kind of mooring line automatic detection device.
Background technology
Floating treating apparatus (claiming again FPSO) is the core cell of complete extra large formula oil-field development, is that the processing of oil-collecting air water, life, generating, heat station and crude oil exporting are in the very process units of complexity of one.FPSO is often playing the part of important role in the whole performance history in oil field, once go wrong, will cause very serious consequence.The FPSO of China adopts turret mooring system mostly at present.Facts have proved the safety that will guarantee this type of FPSO, must first guarantee the safety of its single buoy mooring system; Therefore the security of single buoy mooring system is most important for FPSO.
By check and use experience, find, the mooring system wirerope is the weakest link of whole single buoy mooring system, except often occur, fracture of wire and wearing and tearing, also often to make anchor hawser sustain damage in installation process in early days in routine use, these damages all make its intensity greatly reduce.Simultaneously, because single buoy mooring system often is designed to not free, changing anchor hawser not only affects production, and expense and cost also very large.So how science, assess exactly the intensity of impaired anchor hawser, have very important significance.
Check for mooring line at present has the frogman to estimate or ROV(Remote Operate Vehicles, remotely-operated vehicle) detect.Mooring line Non-Destructive Testing and evaluation are exactly to use state in the situation that do not destroy mooring line, apply certain detection technique and analytical approach, the state characteristic of mooring line is measured, and pressed the process of certain criterion to its evaluation.Wherein, mooring line detector and testing result are the most basic, only have the state of Obtaining Accurate mooring line damage defect, just talk further the evaluation to mooring line.
The open case CN202330355U of Chinese patent discloses a kind of nondestructive device for mooring steel cable, in the ROV mode, detects mooring line.The mode that content disclosed in it is quoted in full is attached to this paper.
For the mooring line pick-up unit, due to the particular surroundings of underwater operation, general unpowered part, adopt the mode by ROV controls to be detected operation under water in design, causes and detect the operation complexity, and cost is high.In addition, partly be generally the loop configuration of fixed diameter for the magnetism gathering rings of the wirerope detector of installation and measuring element, can only detect the mooring line of special diameter, when the mooring line diameter changes, the easy distortion of testing result.
The utility model content
The utility model provides a kind of mooring line automatic detection device for solving the technical matters existed in known technology, and this device can detect mooring line under water automatically, without ROV, drags control, has improved the mooring line detection efficiency.
The technical scheme that the utility model is taked for the technical matters existed in the solution known technology is: a kind of mooring line automatic detection device, comprise the mooring line detector, this pick-up unit also comprises the power section be connected by flange with described mooring line detector; Described power section comprises at least two travel wheel that are connected with the mooring line rolling friction, all described travel wheel be distributed on described mooring line around, described travel wheel is vertical with described mooring line, described travel wheel is arranged on back shaft, described back shaft is arranged on back-up block, and described back-up block is arranged on described flange; Described back shaft is driven by the motor be arranged on described back-up block, and described motor is by the storage battery power supply that is provided with waterproof construction, and described accumulator is arranged on described flange.
Described back-up block is connected with described flange by chute, described chute is formed on described flange, described back-up block is slidably connected in described chute, be provided with the first spring at described back-up block away from a side of described mooring line, described the first spring clamp is pressed between described back-up block and pressure cap, and described pressure cap is fixed on described flange.
Described mooring line detector comprises shell, be fixed on a plurality of uniform magnetic patch on described shell and be positioned at accordingly the split type magnetism gathering rings of described shell with described magnetic patch, all described split type magnetism gathering rings be distributed on described mooring line around, on described split type magnetism gathering rings, hall detection component is installed, be provided with through hole between the described magnetic patch of correspondence and described split type magnetism gathering rings on described shell, be provided with the hold-down mechanism of described split type magnetism gathering rings in described through hole, described hold-down mechanism comprises the radial slider affixed with described split type magnetism gathering rings, sleeve, spring abutment, cover plate and the second spring, described cover plate is fixed on described magnetic patch, described spring abutment is fixed on described cover plate, described sleeve is fixed on described spring abutment, described radial slider is arranged in described sleeve, be clamped with described the second spring between described cover plate and described radial slider.
Described split type magnetism gathering rings middle part is equipped with the roller be connected with described mooring line rolling friction, and the axis of described roller intersects vertical with the axial space of described mooring line.
The surface of described travel wheel is the cambered surface with the surface adaptation of described mooring line.
Described power section comprises centrosymmetric two branches, and two described travel wheel that adhere to two branches separately are symmetricly set on the both sides of described mooring line, and are positioned at the two ends of the same diameter of described mooring line.
The advantage the utlity model has with good effect is: by adopting, be connected the structure of power section on the mooring line detector, make the utility model without being dragged by ROV control under water, by self power, just can move along detected wirerope direction, thereby the robotization that can complete mooring line detects, and can make testing process more easily control, be conducive to improve detection efficiency.Owing to not re-using ROV under water, also avoided that the ROV operating cost is high under water, complicated operation, the shortcoming such as have a big risk; The utility model also, by improving the test section structure, adopts split type magnetism gathering rings structure, can realize diameter is changed the self-adapting detecting of wirerope.Can realize diameter is changed the self-adapting detecting of wirerope, when running into detected wirerope variation in diameter or chap, the reasonable distance that can keep detecting element and detected wirerope surface, avoided wirerope diameter change location place larger testing result systematic error to occur.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The side view that Fig. 2 is Fig. 1;
The A-A cut-open view that Fig. 3 is Fig. 1.
In figure: 1, power section; 2, mooring line detector; 3, flange; 11, motor; 12, pressure cap; 13, the first spring; 14, travel wheel; 15, back-up block; 16, back shaft; 21, split type magnetism gathering rings; 22, the second spring; 23, radial slider; 24, roller; 25, magnetic patch; 26, cover plate; 27, spring abutment; 28, sleeve; 29, shell.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1~Fig. 3, a kind of mooring line automatic detection device, comprise mooring line detector 2, and this pick-up unit also comprises the power section 1 be connected by flange 3 with described mooring line detector 2.
Described power section 1 comprises at least two travel wheel 14 that are connected with the mooring line rolling friction, all described travel wheel 14 be distributed on described mooring line around, described travel wheel 14 is vertical with described mooring line, described travel wheel 14 is arranged on back shaft 16, described back shaft 16 is arranged on back-up block 15, and described back-up block 15 is arranged on described flange 3; Described back shaft 16 is driven by the motor 11 be arranged on described back-up block 15, and described motor 11 is by the accumulator (not shown) power supply that is provided with waterproof construction, and described accumulator is arranged on described flange 3.Motor 11 drives travel wheel 14 to roll on mooring line, and then drives mooring line detector 2 and move ahead, and completes robotization and detects, without external impetus.
In the present embodiment, described back-up block 15 is connected with described flange 3 by chute, described chute is formed on described flange 3, described back-up block 15 is slidably connected in described chute, be provided with the first spring 13 at described back-up block 15 away from a side of described mooring line, described the first spring 13 crampings are between described back-up block 15 and pressure cap 12, and described pressure cap 12 is fixed on described flange 3.The travel wheel 14 that the first spring 13 can make to be arranged on back-up block 15 is pressed on mooring line all the time, and assurance travel wheel 14 can be rolled on wirerope, thereby drives described mooring line detector 2 motions.And make the radial position of travel wheel 14 adjustable, lay the foundation for adapting to the detection of reducing mooring line.
In order to adapt to the reducing mooring line, detect, in the present embodiment, described mooring line detector 2 comprises shell 29, be fixed on a plurality of uniform magnetic patch 25 on described shell 29 and be positioned at accordingly the split type magnetism gathering rings 21 of described shell 29 with described magnetic patch 25, all described split type magnetism gathering rings 21 be distributed on described mooring line around, on described split type magnetism gathering rings 21, hall detection component is installed, be provided with through hole between the described magnetic patch 25 of correspondence and described split type magnetism gathering rings 21 on described shell 29, be provided with the hold-down mechanism of described split type magnetism gathering rings 21 in described through hole, described hold-down mechanism comprises the radial slider 23 affixed with described split type magnetism gathering rings 21, sleeve 28, spring abutment 27, cover plate 26 and the second spring 22, described cover plate 26 is fixed on described magnetic patch 25, described spring abutment 27 is fixed on described cover plate 26, described sleeve 28 is fixed on described spring abutment 27, described radial slider 23 is arranged in described sleeve 28, be clamped with described the second spring 22 between described cover plate 26 and described radial slider 23.The second spring 22 can drive described split type magnetism gathering rings 21 along the moving radially of mooring line, and makes described split type magnetism gathering rings 21 relative with the spacing on mooring line surface constant, with the wirerope diameter is uneven, does not change.
In order to reduce the frictional resistance of mooring line detector 2, at described split type magnetism gathering rings 1 middle part, the roller 24 be connected with described mooring line rolling friction is installed, the axis of described roller 24 intersects vertical with the axial space of described mooring line.
In order to increase the surface of contact with the mooring line surface, increasing friction force, the surface of described travel wheel 14 is the cambered surface with the surface adaptation of described mooring line.In order to make one-piece construction more firm, described power section 1 comprises centrosymmetric two branches, and two described travel wheel 14 that adhere to two branches separately are symmetricly set on the both sides of described mooring line, and are positioned at the two ends of the same diameter of described mooring line.
The unlikely crowding effect of magnetism gathering rings to magnetic field energy that affect, above-mentioned rollers 24 and travel wheel 14 all adopt paramagnetic material to make.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, within these all belong to protection domain of the present utility model.