CN113911289B - Floating fan semi-submersible platform operation period monitoring method - Google Patents
Floating fan semi-submersible platform operation period monitoring method Download PDFInfo
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- CN113911289B CN113911289B CN202111342214.3A CN202111342214A CN113911289B CN 113911289 B CN113911289 B CN 113911289B CN 202111342214 A CN202111342214 A CN 202111342214A CN 113911289 B CN113911289 B CN 113911289B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 67
- 238000007667 floating Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007797 corrosion Effects 0.000 claims abstract description 20
- 238000005260 corrosion Methods 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/10—Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/10—Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers
- B63B79/15—Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers for monitoring environmental variables, e.g. wave height or weather data
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a method for monitoring the operation period of a semi-submersible platform of a floating fan, which comprises the following steps: and (3) monitoring the tension of the anchor chain: the strain measuring device is arranged in a shackle at the connecting position of the anchor chain and the platform body, and the tension of the anchor chain is measured; and (3) monitoring the inclination angle and azimuth angle of the anchor chain: arranging a fiber optic gyroscope on a shackle of the anchor chain connected with the platform body to measure the azimuth angle of the anchor chain; an inclinometer is arranged on a shackle of the connection of the anchor chain and the platform body, and the inclination angle of the top of the anchor chain is monitored; monitoring the stress of the platform component: strain sensors are arranged on the upper support and the lower support for monitoring; monitoring the position, the orientation and the motion posture of the platform; and monitoring wind wave current of the platform operation environment. The invention can comprehensively monitor the displacement, stress, corrosion and other states of each component of the semi-submersible platform in the operation period.
Description
Technical Field
The invention relates to the technical field of operation period monitoring of a semi-submersible platform of a floating fan.
Background
The floating type fan is generally located in deep sea far away from the coast, natural conditions such as on-site wind and wave flow are severe, unpredictable damage is easily caused to the operation of the fan, and therefore the monitoring has very important significance to the deep sea floating type fan. The working states of the platform and the anchoring system can be found through monitoring, problems and hidden dangers can be found early, reinforcement is achieved, the situation that the problem is prevented, and the safe operation of the fan is guaranteed.
The research in floating wind power is just started, no standard specification can follow and no related design calculation experience is available, on one hand, the first hand data obtained through operation period monitoring is needed to verify and correct the design method of the floating platform, and data is provided for improving the design and scientific research level; on the other hand, the long-term safety monitoring is needed to ensure the safe operation of the floating fan in the whole life cycle, so that the development of the deep-open sea floating wind power technology is promoted.
In order to solve the problems, a set of operation period monitoring method is designed for the semi-submersible type platform of the floating fan, and the method has important significance for guaranteeing the safe operation of the deep-open sea floating fan and improving the corresponding design and scientific research level.
Disclosure of Invention
The invention aims to provide a method for monitoring the operation period of a semi-submersible platform of a floating fan, which can comprehensively monitor the displacement, stress, corrosion and other states of each component of the semi-submersible platform in the operation period.
The technical scheme for achieving the purpose is as follows:
a floating fan semi-submersible platform operation period monitoring method, the floating fan semi-submersible platform includes: the anchor chain of platform body and passing through shackle connection platform body, the platform body includes: the monitoring method comprises the following steps of:
step one, monitoring the tension of an anchor chain: the strain measuring device is arranged in a shackle at the connecting position of the anchor chain and the platform body, and the tension of the anchor chain is measured;
step two, monitoring the inclination angle and azimuth angle of the anchor chain: arranging a fiber optic gyroscope on a shackle of the anchor chain connected with the platform body to measure the azimuth angle of the anchor chain; an inclinometer is arranged on a shackle of the connection of the anchor chain and the platform body, and the inclination angle of the top of the anchor chain is monitored;
step three, monitoring the stress of the platform component: strain sensors are arranged on the upper support and the lower support for monitoring;
step four, monitoring the position, the orientation and the motion gesture of the platform: measuring the position of the platform body by adopting a global positioning system and a ship automatic identification system, and measuring the orientation of the platform body by adopting an electronic compass; monitoring acceleration and displacement parameters of six degrees of freedom of the platform body by adopting an MRU motion reference unit;
step five, monitoring wind and wave currents in a platform operation environment: the wind speed and the wind direction are measured by an ultrasonic wind speed sensor, the wave is measured by a buoy type wave meter, and the ocean current is measured by an acoustic Doppler flow velocity profile meter.
Step six, monitoring platform corrosion: the current and the protection potential voltage of the sacrificial anode emission of the corrosion monitoring point of the platform body are monitored.
Preferably, the method further comprises:
step seven, monitoring the growth and corrosion conditions of marine organisms of the underwater mooring system: the diver or the underwater robot carries a vernier caliper and a weighing device to measure the appearance size of the anchor chain and weigh the weight of the anchor chain;
step eight, data transmission: all data are summarized to a micro control unit in a tower barrel of the platform body and transmitted to an onshore monitoring center through optical fibers.
Preferably, in the third step, strain sensors are arranged at the top and bottom of the rod at positions 1/4, 1/2 and 3/4 of the respective lengths of the upper support and the lower support.
Preferably, in the fourth step, the global positioning system, the ship automatic identification system and the electronic compass are all arranged on the top of the transition section of the platform body.
Preferably, in the fifth step, the ultrasonic wind speed sensor is arranged at the top of the transition section of the platform body, and the buoy type wave instrument is connected to the buoy of the platform body by adopting an anchor chain and a floating ball; the acoustic Doppler flow profiler is disposed on the pontoon of the platform body and below the pontoon type wave meter.
Preferably, in the sixth step, the corrosion monitoring point of the platform body is located at a depth of 5m below the top of the pontoon of the platform body;
the anchor chain corrosion monitoring point is positioned at the shackle of the connection position of the anchor chain and the platform body.
The beneficial effects of the invention are as follows: through effective design, the invention effectively realizes the omnibearing monitoring of the operation period of the semi-submersible platform, ensures the safe operation of the floating fan in the whole life cycle and has important significance to the scientific research level.
Drawings
FIG. 1 is a schematic view of a semi-submersible platform strain sensor location in accordance with the present invention;
FIG. 2 is a schematic view of a semi-submersible platform position, orientation and motion monitoring position according to the present invention;
FIG. 3 is a schematic diagram of a semi-submersible platform operating environment stormy wave current monitoring position in accordance with the present invention;
FIG. 4 is a schematic view of a semi-submersible platform corrosion monitoring location in accordance with the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-4, a floating fan semi-submersible platform includes: the anchor chain of platform body and passing through shackle connection platform body, the platform body includes: the floating structure comprises a plurality of floating cylinders, an upper layer support connected with each floating cylinder and a lower layer support connected with each floating cylinder.
The invention relates to a method for monitoring the operation period of a semi-submersible platform of a floating fan, which comprises the following steps:
step one, monitoring the tension of an anchor chain: and (3) arranging the strain measuring device in a shackle at the connecting position of the anchor chain and the platform body, and measuring the tension of the anchor chain. The strain measuring device adopts a strain sensor with the precision of 1 mu epsilon and the sampling frequency of 5Hz.
Step two, monitoring the inclination angle and azimuth angle of the anchor chain: and arranging a fiber optic gyroscope on a shackle of the anchor chain connected with the platform body to measure the azimuth angle of the anchor chain, wherein the measurement accuracy is up to 0.5 degrees, the measurement range is +/-90 degrees, and the sampling frequency is 5Hz. And an inclinometer is arranged on a shackle connected with the anchor chain and the platform body, the inclination angle of the top of the anchor chain is monitored, the measurement precision is up to 1 degree, the measurement range is +/-45 degrees, and the sampling frequency can be 5Hz.
Step three, monitoring the stress of the platform component: strain sensors are arranged at the top and bottom (compression side and tension side when the rod is bent) of the rod at positions 1/4, 1/2 and 3/4 of the respective lengths of the upper support and the lower support for monitoring. As shown in fig. 1. Meanwhile, only one of the three supports is arranged, the other two supports are arranged in the same way, and 36 strain sensors are arranged in total. In addition, the interface between the tower barrel and the transition section measures longitudinal and circumferential strains of 0 DEG, 90 DEG, 180 DEG and 270 DEG in the circumferential direction, and the total number of the strain sensors is 4, and the number of the strain sensors is 8. All strain sensors adopt fiber Bragg grating strain sensors, the measurement precision is 1 mu epsilon, and the sampling frequency is 5Hz.
Step four, monitoring the position, the orientation and the motion gesture of the platform: the position of the platform body is measured by adopting a global positioning system and an automatic ship identification system (Automatic identification System), the measurement precision position is +/-1 m, and the sampling frequency is 0.1Hz. The orientation of the platform body is measured by adopting an electronic compass, the measuring precision position is +/-1 DEG, and the sampling frequency is 0.1Hz. The acceleration and displacement parameters of six degrees of freedom of the platform body, namely, sway, slosh, heave, roll, pitch and yaw, are monitored by adopting a MRU (motion reference unit) motion reference unit. As shown in fig. 2, the global positioning system, the ship automatic identification system and the electronic compass are all arranged on top of the transition section of the platform body.
Step five, monitoring wind and wave currents in a platform operation environment: as shown in FIG. 3, the wind speed and the wind direction are measured by using an ultrasonic wind speed sensor, and the sampling frequency is 0.1Hz. The wave is measured by using a buoy type wave meter, and the data sampling frequency is 0.1Hz. The ultrasonic wind speed sensor is arranged at the top of the transition section of the platform body, and the buoy type wave instrument is connected to the buoy of the platform body by adopting an anchor chain and a floating ball. The sampled data is transmitted directly to a receiver on the platform via a short-range signal. The ocean current is measured using an acoustic Doppler flow profiler. The acoustic Doppler flow velocity profile instrument is arranged on the pontoon of the platform body and is positioned at the position of the lower-layer wave instrument section of the two pontoons, wherein the cross section of the lower-layer wave instrument section of the two pontoons is downward by 1m and 2m, two pontoons are respectively arranged on each pontoon, and four pontoons are arranged, as shown in figure 3, and the sampling frequency is 0.1Hz.
Step six, monitoring platform corrosion: the current and the protection potential voltage emitted by the sacrificial anode of the corrosion monitoring point of the platform body are monitored, and the monitoring frequency is 0.1Hz. The current emitted by the sacrificial anode of the anchor chain corrosion monitoring point and the voltage of the protection potential are monitored, and the monitoring frequency is 0.1Hz. As shown in fig. 4, the corrosion monitoring point of the platform body is positioned at the 5m depth of the top of the pontoon of the platform body; the anchor chain corrosion monitoring point is positioned at the shackle of the connection position of the anchor chain and the platform body. The steel tube structure of the platform has 6 measuring points, the anchor chain has 4 measuring points, and each measuring point monitors the protection potential and the emission current of the sacrificial anode.
Step seven, monitoring the growth and corrosion conditions of marine organisms of the underwater mooring system: the diver or the underwater robot carries a vernier caliper and a weighing device to measure the appearance size of the anchor chain and weigh the weight of the anchor chain; the primary monitoring is performed 1 month after the operation, and then underwater monitoring is performed every 3 months.
Step eight, data transmission: all data are summarized to a micro control unit in a tower barrel of the platform body and transmitted to an onshore monitoring center through optical fibers.
In fig. 1 to 4, reference numerals denote: 1. strain monitoring points; 2. platform position, orientation and motion gesture measurement points; 3. measuring points of an ultrasonic wind speed sensor; 4. measuring points of an acoustic Doppler flow velocity profiler; 5. buoy type wave instrument measuring points; 6. the platform structure corrodes the measuring point; 7. the anchor chain is connected with the platform for corrosion measurement.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, and thus all equivalent technical solutions should be defined by the claims.
Claims (1)
1. A floating fan semi-submersible platform operation period monitoring method, the floating fan semi-submersible platform includes: the anchor chain of platform body and passing through shackle connection platform body, the platform body includes: the monitoring method comprises the following steps of:
step one, monitoring the tension of an anchor chain: the strain measuring device is arranged in a shackle at the connecting position of the anchor chain and the platform body, and the tension of the anchor chain is measured;
step two, monitoring the inclination angle and azimuth angle of the anchor chain: arranging a fiber optic gyroscope on a shackle of the anchor chain connected with the platform body to measure the azimuth angle of the anchor chain; an inclinometer is arranged on a shackle of the connection of the anchor chain and the platform body, and the inclination angle of the top of the anchor chain is monitored;
step three, monitoring the stress of the platform component: strain sensors are arranged on the upper support and the lower support for monitoring;
step four, monitoring the position, the orientation and the motion gesture of the platform: measuring the position of the platform body by adopting a global positioning system and a ship automatic identification system, and measuring the orientation of the platform body by adopting an electronic compass; monitoring acceleration and displacement parameters of six degrees of freedom of the platform body by adopting an MRU motion reference unit;
step five, monitoring wind and wave currents in a platform operation environment: measuring wind speed and wind direction by using an ultrasonic wind speed sensor, measuring waves by using a buoy type wave meter, and measuring ocean currents by using an acoustic Doppler flow velocity profile meter;
step six, monitoring platform corrosion: monitoring the current and the protection potential voltage of the sacrificial anode emission of the corrosion monitoring point of the platform body;
further comprises:
step seven, monitoring the growth and corrosion conditions of marine organisms of the underwater mooring system: the diver or the underwater robot carries a vernier caliper and a weighing device to measure the appearance size of the anchor chain and weigh the weight of the anchor chain;
step eight, data transmission: all data are summarized to a micro control unit in a tower barrel of the platform body and transmitted to an onshore monitoring center through optical fibers;
in the third step, strain sensors are arranged at the top and the bottom of the rod piece at positions of 1/4, 1/2 and 3/4 of the respective lengths of the upper layer support and the lower layer support;
in the fourth step, the global positioning system, the ship automatic identification system and the electronic compass are all arranged at the top of the transition section of the platform body;
in the fifth step, an ultrasonic wind speed sensor is arranged at the top of the transition section of the platform body, and the buoy type wave instrument is connected to the buoy of the platform body by adopting an anchor chain and a floating ball; the acoustic Doppler flow velocity profiler is arranged on the pontoon of the platform body and is positioned below the buoy type wave meter;
in the sixth step, the corrosion monitoring point of the platform body is positioned at the depth of 5m downwards from the top of the pontoon of the platform body;
the anchor chain corrosion monitoring point is positioned at the shackle of the connection position of the anchor chain and the platform body.
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| CN202111342214.3A CN113911289B (en) | 2021-11-12 | 2021-11-12 | Floating fan semi-submersible platform operation period monitoring method |
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| CN202111342214.3A CN113911289B (en) | 2021-11-12 | 2021-11-12 | Floating fan semi-submersible platform operation period monitoring method |
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