CN204831675U - Marine floating fan anchoring system fracture inefficacy forecast system - Google Patents

Marine floating fan anchoring system fracture inefficacy forecast system Download PDF

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Publication number
CN204831675U
CN204831675U CN201520270508.3U CN201520270508U CN204831675U CN 204831675 U CN204831675 U CN 204831675U CN 201520270508 U CN201520270508 U CN 201520270508U CN 204831675 U CN204831675 U CN 204831675U
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China
Prior art keywords
platform
module
cable
mooring
sensing module
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Expired - Fee Related
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CN201520270508.3U
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Chinese (zh)
Inventor
沈意平
贺赛坪
彭春江
戴巨川
李学军
何宽芳
冯和英
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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Priority to CN201520270508.3U priority Critical patent/CN204831675U/en
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Abstract

The utility model discloses a marine floating fan anchoring system fracture inefficacy forecast system, including platform position appearance sensing module, cable tensile force sensing module, signal acquisition and transport module, moor system dynamics analysis module and cable fracture inefficacy judge module, platform position appearance sensing module is located complete machine centre of gravity place department, and cable tensile force sensing module is installed to the cable upper end, and signal acquisition and transport module link to each other with platform position appearance sensing module and cable tensile force sensing module, the system dynamics analysis module that moors links to each other with cable fracture inefficacy judge module. The utility model discloses a GPS system can realize the accurate of floating platform with the combination of inertia measuring unit and fix a position in real time, the system dynamics response analysis because moor carries out mooring hawser fracture inefficacy judgement through theory calculation and testing result contrast, and realizability is strong.

Description

Offshore floating type blower fan mooring system fracture failure forecast system
Technical field
The utility model relates to wind power equipment monitoring and area of maintenance, particularly offshore floating type blower fan mooring system fracture failure forecast system.
Background technology
Offshore floating type blower fan is that deep-sea wind energy development provides effective solution, has become forward position and the focus of the research of domestic and international marine power generation.Offshore floating type assembling, away from seashore, will produce significantly motion and complicated operation dynamic load under operational process apoplexy wave flow action.Cable is used for wind energy conversion system traction location, and the dynamic changes process be subject to by wind energy conversion system, to seabed, is the guarantee of wind energy conversion system safe and stable operation.In marine environment, cable presents significant nonlinear characteristic, especially when be in loose-tensioning alternating state time, cable tensile force variation abnormality is complicated, may occur very high dynamic tension and cause mooring system fracture failure.Once cable generation fracture accident, residue cable tensile force will be caused to increase and accelerate its inefficacy, and even wind energy conversion system topples and damages, and brings huge economic loss.Therefore, how the fracture failure of mooring system is forecast, realize preventive maintenance and prevent from wind energy conversion system from inclining ruining, become current problem demanding prompt solution.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides the offshore floating type blower fan mooring system fracture failure forecasting procedure that a kind of reliability is strong, can forecast the fracture failure of mooring system, and can realize the system of the method.
The technical scheme that the utility model solves the problems of the technologies described above is:
A kind of offshore floating type blower fan mooring system fracture failure forecast system, comprises for the platform's position and pose sensing module of acquisition platform displacement and angle information, cable tensile force sensing module, signals collecting and transport module for cable tensile force signal in acquisition platform pose and mooring system, mooring system dynamics analysis module and cable breaks inefficacy judge module; Described platform's position and pose sensing module is positioned on the floating platform intermediate column of machine gravity position, every cables is provided with cable tensile force sensing module near the position of platform, described signals collecting is connected with cable tensile force sensing module with described platform's position and pose sensing module with transport module, and be connected with mooring system dynamics analysis module with monitoring center main frame through signal and communication cable, described mooring system dynamics analysis module is connected with cable breaks inefficacy judge module.
Described platform's position and pose sensing module comprises gps system, Inertial Measurement Unit and corresponding displacement and angle calculation unit, and described cable tensile force sensing module comprises foil gauge and signal conditioning circuit.
Described Inertial Measurement Unit comprises accelerometer and gyroscope.
Described mooring system is tension type or catenary suspension type continuous vulcanization.
Technique effect of the present utility model exists: in the utility model forecast system, the foil gauge of cable tensile force sensing module is arranged in mooring hawser near position of platform, measure the dynamic tension that each cable bears, the gps system of platform's position and pose sensing module and Inertial Measurement Unit are arranged in floating platform geometric center lines, for the accurate location of implementation platform displacement and angle.Wherein, the accelerometer measures x in Inertial Measurement Unit, the acceleration in y, z direction, 3 gyroscope surveys around x, y, the angular acceleration of z-axis.Signals collecting and transport module in order to acquisition platform pose and cable tensile force signal, and are sent to monitoring center's main frame by signal and communication cable.Mooring system dynamics analysis module carries out nonlinear kinetics response analysis according to floating platform pose, provides cable dynamic stress change curve.Cable breaks inefficacy judge module is then according to dynamic analysis with detect the cable tensile force that obtains and judge cable whether fracture failure.The information of collection and result of determination are sent to monitoring center's main frame by signals collecting and transport module in real time, are convenient to the duty of personnel monitoring's mooring system, when mooring system exists fracture failure possible, can take measures to keep in repair in time.
The utility model adopts gps system and Inertial Measurement Unit to combine can realize accurately locating in real time of floating platform; Analyze based on mooring system dynamic response, contrasted carry out the judgement of mooring hawser fracture failure by theory calculate and testing result, the method is simply efficient, and realizability is strong.The utility model is also applicable to the monitoring of marine all kinds of floating platform mooring system.
Accompanying drawing explanation
Fig. 1 is the block scheme of the utility model fracture failure forecast system;
Fig. 2 is the general structure schematic diagram of the utility model fracture failure forecast system;
Fig. 3 is offshore floating type fan platform running status schematic diagram in the utility model.
Embodiment
As shown in Figure 1, Fig. 1 is structured flowchart of the present utility model.3 cables of mooring system draw homogeneous radiation to seabed from platform, cable is overhang, and fracture failure forecast system comprises platform's position and pose sensing module, cable tensile force sensing module, signals collecting and transport module, mooring system dynamics analysis module and cable breaks inefficacy judge module; Platform's position and pose sensing module is positioned on the floating platform intermediate column of machine gravity position, every cables is provided with cable tensile force sensing module near the position of platform, signals collecting is connected with cable tensile force sensing module with platform's position and pose sensing module with transport module, and the information collected is sent in monitoring center's main frame and mooring system dynamics analysis module by signal and communication cable, mooring system dynamics analysis module is connected with cable breaks inefficacy judge module.
Accelerometer measures x in Inertial Measurement Unit, the acceleration in y, z direction, 3 gyroscope surveys around x, y, the angular acceleration of z-axis.
According to parameter and the arrangement of mooring hawser, calculate cable tensioning and the critical moving region of fracture failure not yet occurs.
As shown in Figure 2, offshore floating type blower fan comprises blade 1, pylon 2, platform 4, cable 6, and the centre of gravity place under ideal conditions under offshore floating type assembling state is system coordinates initial point, and platform's position and pose testing result will be transformed into this coordinate system.
The Inertial Measurement Unit 3 of platform's position and pose sensing module is arranged in the machine gravity position of floating platform intermediate column, be easy to the accurate measurement of implementation platform pose, when platform displacement to or when exceeding critical moving region, carry out the response analysis of corresponding mooring system nonlinear kinetics.
Mooring system dynamics analysis module adopts nonlinear finite element to set up the kinetic model of system, the six degree of freedom acceleration spectrum obtained by Inertial Measurement Unit, as load applying to floating platform centre of gravity place, can obtain each cables dynamic stress situation of change by dynamic analysis.
The foil gauge 5 of cable tensile force sensing module is arranged in cable near position of platform, and foil gauge signal transmission distance is shorter, and installation and repairing is convenient.The signals collecting hardware of platform's position and pose sensing module can be arranged in floating platform structure, and Signal transmissions utilizes Wind turbines signal and communication cable to be sent to monitoring center's main frame.
As in Fig. 3 (a), 3 cables are loose, cable is in a safe condition, and when Platform movement is to the state of Fig. 3 (b), cable 6 is in tensioning state, and whether fracture occurs needs to judge according to the cable tensile force testing result of correspondence.The dynamic tension of cable 6 in statistical study certain time length, compares itself and the detection tensile force detecting the cable 6 obtained, if error within the limits prescribed, then judges that cable does not rupture, otherwise judges that corresponding cable breaks lost efficacy.When Platform movement is to the state of Fig. 3 (c), according to platform displacement testing result beyond maximum critical moving region, then can judge that cable 6 ruptures.
The mooring system of the utility model to tension type or catenary suspension type continuous vulcanization is all effective, is also applicable to the monitoring of marine all kinds of floating platform mooring system.
The utility model has the advantage of, adopt gps system and Inertial Measurement Unit to combine and can realize accurately locating in real time of floating platform; Analyze based on mooring system dynamic response, contrasted by theory calculate and testing result and carry out the judgement of mooring hawser fracture failure, realizability is strong.

Claims (4)

1. an offshore floating type blower fan mooring system fracture failure forecast system, is characterized in that: comprise for the platform's position and pose sensing module of acquisition platform displacement and angle information, cable tensile force sensing module, signals collecting and transport module for cable tensile force signal in acquisition platform pose and mooring system, mooring system dynamics analysis module and cable breaks inefficacy judge module; Described platform's position and pose sensing module is positioned on the floating platform intermediate column of machine gravity position, every cables is provided with cable tensile force sensing module near the position of platform, described signals collecting is connected with cable tensile force sensing module with described platform's position and pose sensing module with transport module, and be connected with mooring system dynamics analysis module with monitoring center main frame through signal and communication cable, described mooring system dynamics analysis module is connected with cable breaks inefficacy judge module.
2. offshore floating type blower fan mooring system fracture failure forecast system according to claim 1, it is characterized in that, described platform's position and pose sensing module comprises gps system, Inertial Measurement Unit and corresponding displacement and angle calculation unit, and described cable tensile force sensing module comprises foil gauge and signal conditioning circuit.
3. offshore floating type blower fan mooring system fracture failure forecast system according to claim 2, it is characterized in that, described Inertial Measurement Unit comprises accelerometer and gyroscope.
4. offshore floating type blower fan mooring system fracture failure forecast system according to claim 1, it is characterized in that, described mooring system is tension type or catenary suspension type continuous vulcanization.
CN201520270508.3U 2015-04-29 2015-04-29 Marine floating fan anchoring system fracture inefficacy forecast system Expired - Fee Related CN204831675U (en)

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CN201520270508.3U CN204831675U (en) 2015-04-29 2015-04-29 Marine floating fan anchoring system fracture inefficacy forecast system

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Application Number Priority Date Filing Date Title
CN201520270508.3U CN204831675U (en) 2015-04-29 2015-04-29 Marine floating fan anchoring system fracture inefficacy forecast system

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CN204831675U true CN204831675U (en) 2015-12-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807586A (en) * 2015-04-29 2015-07-29 湖南科技大学 Method and system for forecasting offshore floating wind turbine mooring system fracture failure
CN107991070A (en) * 2017-10-30 2018-05-04 大连理工大学 A kind of method of real-time for marine structure anchor chain fracture of anchoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807586A (en) * 2015-04-29 2015-07-29 湖南科技大学 Method and system for forecasting offshore floating wind turbine mooring system fracture failure
CN107991070A (en) * 2017-10-30 2018-05-04 大连理工大学 A kind of method of real-time for marine structure anchor chain fracture of anchoring

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151202

Termination date: 20200429

CF01 Termination of patent right due to non-payment of annual fee