CN112160296A - Anti-ice cone for offshore structure and operation process thereof - Google Patents
Anti-ice cone for offshore structure and operation process thereof Download PDFInfo
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- CN112160296A CN112160296A CN202010913212.4A CN202010913212A CN112160296A CN 112160296 A CN112160296 A CN 112160296A CN 202010913212 A CN202010913212 A CN 202010913212A CN 112160296 A CN112160296 A CN 112160296A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/02—Cleaning or keeping clear the surface of open water; Apparatus therefor from ice otherwise than according to E02B1/003
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/0021—Means for protecting offshore constructions against ice-loads
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Abstract
The invention discloses an ice-resisting cone for an offshore structure and an operation process thereof. The monitoring module is provided with a radar system, a communication system, a storage battery and a solar panel. The method for separating the ice layer at the junction of the ice resisting cones of the front and back cone structures adopted by the ice resisting cones in the invention is simple and practical, the extrusion load applied to the junction of the front and back cones of the traditional ice resisting cones is converted into the bending load, and the cone structure and the offshore structure foundation can be more effectively protected; compared with the traditional ice cone, the method can master accurate data of the occurrence, development and change rules of the sea ice disaster and perfect the sea ice disaster file.
Description
Technical Field
The invention belongs to the technical field of ocean engineering construction, and particularly relates to an ice-resistant cone for an offshore structure and an operation process thereof.
Background
Sea ice is a special marine disaster in the sea area of polar regions and high latitudes, and the problem of the marine disaster mainly exists in the eastern Liaowan, Bohai gulf, Laizhou gulf and the northern part of the yellow sea in China. Meanwhile, as the wind energy reserve density of the sea areas of the Bohai sea and the northern part of the yellow sea is high, the single-pile foundation is more widely applied along with the development of offshore wind power, offshore oil exploitation platforms and other ocean engineering development activities, and the influence of ice load is additionally considered when the single-pile foundation is designed.
Under the action of ice load, the ice rows moving integrally are blocked by the structure to generate extrusion on the structure and vibration when passing through the structure, meanwhile, the damage forms of the ice rows in front of the structure mainly comprise extrusion, buckling, shearing and bending damage, and the bending strength of the sea ice is far smaller than the extrusion strength of the sea ice, so that the ice load can be reduced to a great extent by changing the damage forms of the sea ice from the extrusion damage to the bending damage for a single-pile foundation.
CN206887997U provides a post-assembled ice cone resistant offshore foundation structure. Through the sleeve that is equipped with a plurality of plug connectors such as anti ice cone on the basic overcoat of cylindric, grout the cavity between the outer wall of cylindric basis and the telescopic inner wall again, can avoid personnel to be under water to be under construction, reduced the marine construction degree of difficulty. But the cone at the junction of the forward cone body and the reverse cone body of the ice-resistant cone structure is easy to bear the extrusion load of floating ice, so that the deicing capability of the ice-resistant cone structure is reduced, and the service life of the cone is reduced.
CN110777838A provides an anti-ice cone structure for offshore wind power foundation and a construction method. The ice-resistant cone structure for the offshore wind power foundation comprises a single pile body, a negative pressure barrel, a platform and an ice-resistant cone, the negative pressure barrel is arranged on the sea mud surface, the platform solidified with the pile body is arranged above the sea level, the ice-resistant cone is sleeved on the pile body, the upper end of the ice-resistant cone is connected with the platform through a first traction piece, the lower end of the ice-resistant cone is connected with the negative pressure barrel through a second traction piece, the ice-resistant cone can be connected with the single pile body stably in a hanging traction mode, the installation mode is simple, and grouting is not needed to be completed. However, the traction piece is easy to corrode and finally damage after being in the marine environment for a long time, and the later maintenance cost of the installation method of suspension traction is high, so that the damage condition of the traction piece cannot be known in time.
In consideration of the fact that the load on a structure can be greatly reduced due to the bending damage of sea ice, a large steel structure building in a heavy ice area in China mainly adopts a mode that a forward and reverse cone assembly is installed on a pile foundation tidal range section, so that the bending damage occurs when the integrally moving ice rows act on a cone inclined plane. When the water level of the seawater is above the average water level, the sea ice acts on the right cone, and the root of the sea ice is bent and damaged; when the water level of the seawater is below the average water level, the sea ice acts on the inverted cone, and the surface of the sea ice is bent and damaged.
However, the traditional front and back taper ice breaking structure has some disadvantages, namely when the ice layer is at the junction of the front and back tapers, the moving ice rows are blocked by the structure to generate larger extrusion damage, the capability of the cone structure for reducing ice load is reduced, and the current anti-ice cone does not have the capability of sea ice data acquisition and sea ice early warning.
Disclosure of Invention
In view of the defects of the traditional front and back taper ice breaking structure, the invention provides the ice resisting taper for the offshore structure and the operation process thereof, and the purpose of reducing the extrusion force applied to the junction of the front and back tapers and further protecting the foundation of the offshore structure can be achieved by separating and bending the ice layer at the junction of the ice resisting taper of the front and back taper structures upwards or downwards. The method for separating the ice layer at the junction of the front and back cone structure ice-resistant cones adopted by the ice-resistant cone in the operation process is simple and practical, can more effectively protect the cone structure and the foundation of the offshore structure compared with the traditional ice-resistant cones with the front and back cone structures, can master accurate data of the occurrence, development and change rules of sea ice disasters compared with the traditional ice-resistant cones, and improves sea ice disaster files.
The invention is realized by the following technical scheme:
an ice-resistant cone for an offshore structure comprises a main body, an ice breaking device, an infrared intelligent high-speed ball, a pressure sensing belt, a monitoring module, a control device and a calculation module;
the main body is two conical structures with the same diameter of the bottom surface, the bottom of each conical structure is a cone, the top of each conical structure is a cylinder, the conical structure on the upper part is a positive cone, the conical structure on the lower part is an inverted cone, and the positive cone is in butt joint fit with the bottom surface of the inverted cone;
the ice breaking device comprises a horizontal blade and a vertical rotating gear, the horizontal blade and the vertical rotating gear are arranged on the outer side of the junction of the forward cone and the reverse cone at intervals, and the vertical rotating gear is in a mutual meshing mode of two gears;
the infrared intelligent high-speed ball is monitoring system equipment integrating the functions of an infrared camera, an intelligent holder system and a communication system, and is arranged on the side wall of the cylinder at the top of the right cone;
the pressure sensing belt is a pressure sensor arranged at the junction of the forward cone and the reverse cone in a surrounding mode, and a rubber belt with the thickness of 5-10 cm is arranged on the surface of the pressure sensor;
the monitoring module is arranged on the side wall of the cylinder at the top of the right cone and comprises a radar system, a communication system, a storage battery and a solar panel, wherein the radar system can perform full-view scanning on sea ice within 2km of the radius of an operation area of the offshore structure, the communication system can receive and send information, the storage battery provides electric energy for the whole ice resisting cone, and the solar panel provides electric energy for the storage battery;
the control device and the calculation module are arranged on the upper part of the right cone and connected with each part of the ice-resistant cone.
Preferably, the cone angle of the cone body of the forward cone and the cone angle of the cone body of the reverse cone are both 50-65 degrees.
Preferably, the number of the infrared intelligent high-speed balls is 3, and the infrared intelligent high-speed balls are arranged on the side wall of the top cylinder of the right cone at intervals.
Preferably, the horizontal blade and the vertical rotating gear are further provided with electric heating wires.
A process for operating an ice pick resistant cone for an offshore structure, comprising the steps of:
step 1) when the floating ice is close to the foundation of the offshore structure and the ice layer is at the junction height of the front cone and the back cone, rotating the horizontal blade and the vertically rotating gear to break the floating ice from the middle and bend the floating ice upwards or downwards, thereby achieving the purpose of reducing the ice load borne by the foundation;
step 2) when the radar system monitors that floating ice is formed within 1km, the infrared intelligent high-speed ball starts to work, the sea surface condition is monitored in real time, when floating ice with the horizontal dimension larger than 20m in a picture is identified to start to approach, the infrared intelligent high-speed ball automatically tracks the floating ice and simultaneously the calculation module starts to work, the infrared intelligent high-speed ball records the actual moving distance L of the floating ice every 5s, and the calculation module calculates the moving speed V of the floating ice according to the formula V, L/TiAnd storing the speed data; wherein i is a natural number, and T is the time required by the floating ice moving distance L;
step 3) when the infrared intelligent high-speed ball monitors that the ice floes are 5-10 m away from the ice cone resistant structure, the pressure sensing belt arranged at the junction of the front cone and the back cone starts to monitor the pressure value P after water pressure is deducted in real timeiThe change of (2):
when P is presenti>x N, the control device is started to rotate the horizontal blade and the gear to separate the ice layer;
when P is presenti<x N stopping the control device;
the rotating speed n of the horizontal blade and the vertical rotating gear is according to the floating ice moving speed ViTo adjust:
when V isi<a cm/s, horizontal blade rotation speed n1Is 2000r/min, the gear rotating speed n2Is 200 r/min;
when a cm/s<Vi<b cm/s, horizontal blade rotation speed n1Is 3000r/min, the gear rotating speed n2Is 300 r/min;
when V isi>b cm/s, horizontal blade rotation speed n1Is 5000r/min, the gear rotating speed n2Is 500 r/min;
wherein the value range of x is 100-200, the value range of a is 15-25, and the value range of b is 35-45.
Preferably, in order to accurately record and early warn the sea ice condition around the offshore structure and carry out sea ice disaster risk assessment, radar images under different ice conditions are subjected to digital processing and analysis through a radar system in the monitoring module to monitor the sea ice thickness and the sea ice density, wherein the sea ice thickness is recorded as Hi(ii) a Sea ice concentration is recorded as Ii(ii) a Each timeSea ice information was collected every 10min and data was stored:
when the sea ice thickness H is continuously monitored for N timesi<Alpha cm or severe ice stage I of sea icei<When gamma%, the communication system sends out low-grade sea ice disaster signals on the same day;
when the sea ice thickness is monitored for N times continuously<Hi<Beta cm or sea ice severe ice period gamma%<Di<% hour, the communication system sends out the disaster signal of middle-grade sea ice in the same day;
when the sea ice thickness H is continuously monitored for N timesi>Beta cm or severe ice stage I of sea icei>% hour, the communication system sends out the disaster signal of high-grade sea ice on the same day;
wherein the value range of N is 72-90, the value range of alpha is 5-10, the value range of beta is 25-35, the value range of gamma is 20-40, and the value range of gamma is 60-80.
Preferably, when the ice breaking device has faults of blade breakage, motor idling caused by blade blocking, gear abrasion and slipping and the like, the control system transmits fault information to the communication system through an electric signal so as to take maintenance measures in time.
Preferably, the communication system can receive cold tide early warning and other extreme weather early warning information sent by a local weather station, and the ice breaking device and other series of protective measures are started in advance through the control device.
The invention has the following beneficial effects:
(1) compared with the traditional ice resisting cone, the ice resisting cone can further convert the floating ice load acting on the ice resisting cone from the extrusion load into the bending load, and timely release the strength of sea ice disasters to the shore, when the floating ice is found to be close to the offshore structure foundation and the ice layer is at the junction height of the positive inverted cone, the floating ice can be disconnected from the middle and bent upwards or downwards, the floating ice is ensured not to generate larger extrusion damage to the ice resisting cone, and the effect of protecting the offshore structure foundation is better achieved; the cone structure can be protected, the maintenance cost is reduced, and the service life of the cone structure is prolonged; the solar energy is utilized for supplying energy, the device can work in a marine environment for a long time, and is high in accuracy and convenient to install; the sea ice data can be accurately recorded, and data support is provided for the follow-up research on the occurrence, development and change rule of sea ice disasters.
(2) Compared with a rear-assembled ice-resistant cone foundation structure, the ice-resistant cone can reduce the load borne by the ice-resistant cone, prolong the service life of the cone structure and have better integrity.
(3) Compared with a method for fixing the ice-resistant cone in a hanging and pulling mode, the ice-resistant cone has a more complete system for monitoring sea ice information, can feed back the damage condition of the ice breaking device in time, and can take timely response to extreme weather.
Drawings
FIG. 1 is a schematic structural view of an ice pick resistant for use in an offshore structure;
FIG. 2 is an enlarged view of a portion of the vertical rotation gear;
in the figure: 1. a positive cone; 2. back tapering; 3. a horizontal blade; 4. a vertical rotation gear; 5. infrared intelligent high-speed ball; 6. a pressure sensing strip; 7. a radar system; 8. a communication system; 9. a storage battery; 10. a solar panel; 11. a control device; 12. and a calculation module.
Detailed Description
The technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and specific embodiments, it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
An ice-resistant cone for an offshore structure, as shown in fig. 1, comprises a main body, an ice breaking device, an infrared intelligent high-speed ball 5, a pressure sensing strip 6, a monitoring module, a control device 11 and a calculation module 12.
The main body is two conical structures with the same diameter of the bottom surface, the bottom of each conical structure is a cone, the top of each conical structure is a cylinder, the conical structure on the upper portion is a positive cone 1, the conical structure on the lower portion is an inverted cone 2, the positive cone 1 is in butt joint fit with the bottom surface of the inverted cone 2, and the cone angles of the conical bodies of the positive cone 1 and the inverted cone 2 are both 50-65 degrees.
The ice breaking device comprises a horizontal blade 3 and a vertical rotating gear 4, and the horizontal blade 3 and the vertical rotating gear 4 are arranged at the outer side of the junction of the forward cone 1 and the reverse cone 2 at intervals; as shown in fig. 2, the vertical rotating gear 4 is in a form that two gears are mutually meshed, and the ice surface is promoted to separate and bend upwards and downwards respectively in a friction driving mode between the gears. Heating wires can be added to the horizontal blade 3 and the vertical rotating gear 4, and the ice breaking device can be used for self-deicing in an electric heating mode.
The infrared intelligent high-speed ball 5 is monitoring system equipment integrating the functions of an infrared camera, an intelligent holder system and a communication system, can intelligently identify and automatically track a target and perform infrared illumination at night, and is arranged on the side wall of the cylinder at the top of the right cone 1; 3 infrared intelligent high-speed balls 5 are arranged on the side wall of the cylinder at the top of the right cone 1 at intervals, so that the functions of multi-target tracking and full-range coverage can be realized.
The monitoring module set up in on the top cylinder lateral wall of positive awl 1, including radar system 7, communication system 8, battery 9 and solar panel 10, radar system 7 can carry out full field of vision scanning to the sea ice in marine structure thing operation area radius 2km, communication system 8 can receive and send information, battery 9 provides the electric energy for whole anti ice awl, solar panel 10 does battery 9 provides continuous electric energy.
The control device 11 and the calculation module 12 are arranged on the upper part of the right cone 1, are not in contact with the sea surface, and are connected with all parts of the ice-resistant cone.
Example 2
An ice cone resistant operation process for an offshore structure comprises the following specific steps:
(1) when the floating ice is close to the foundation of the offshore structure and the ice layer is at the junction height of the front cone and the back cone, the horizontal blade and the vertical rotating gear are rotated, so that the floating ice is broken from the middle and bent upwards or downwards, and the purpose of reducing the ice load borne by the foundation is achieved.
(2) When a radar system monitors that floating ice is formed within 1km, an infrared intelligent high-speed ball starts to work, the sea surface condition is monitored in real time, when floating ice with a large area (generally, floating ice with a horizontal dimension larger than 20 m) in a picture is identified to start to approach, a calculation module starts to work while automatically tracking the floating ice, the infrared intelligent high-speed ball records the actual moving distance L of the floating ice every 5s, and the calculation module calculates the moving speed V of the floating ice according to a formula V which is L/T (cm/s)i(i ═ 1,2,3 … …) and stores the speed data, T being the time required for the ice float to travel the distance L.
(3) When the infrared intelligent high-speed ball monitors that the floating ice is 5-10 m away from the ice cone resisting structure, the pressure sensing belt arranged at the junction of the front cone and the back cone starts to monitor the pressure value P in real timei(wherein P isiPressure value after deduction of water pressure):
when P is presenti>x N, the control device is started to rotate the horizontal blade and the gear to separate the ice layer;
when P is presenti<x N stopping the control device;
the rotating speed n of the horizontal blade and the vertical rotating gear is according to the floating ice moving speed ViTo adjust:
when V isi<a cm/s, horizontal blade rotation speed n1Is 2000r/min, the gear rotating speed n2Is 200 r/min;
when a cm/s<Vi<b cm/s, horizontal blade rotation speed n1Is 3000r/min, the gear rotating speed n2Is 300 r/min;
when V isi>b cm/s, horizontal blade rotation speed n1Is 5000r/min, the gear rotating speed n2Is 500 r/min;
wherein the value range of x is 100-200, the value range of a is 15-25, and the value range of b is 35-45.
(4) For accurate recording and early warning at seaSea ice conditions around the structure and sea ice disaster risk assessment are carried out, radar images under different ice conditions are subjected to digital processing and analysis through a radar system in the monitoring module to monitor sea ice thickness and sea ice intensity, wherein the sea ice thickness is recorded as Hi(i ═ 1,2,3 … …); sea ice concentration is recorded as Ii(i ═ 1,2,3 … …); sea ice information was collected every 10min and data was stored:
when the sea ice thickness H is continuously monitored for N timesi<Alpha cm or severe ice stage I of sea icei<When gamma%, the communication system sends out a disaster signal of the sea ice of III (low) level on the same day;
when the sea ice thickness is monitored for N times continuously<Hi<Beta cm or sea ice severe ice period gamma%<Di<% time, the communication system sends out a II (middle) grade sea ice disaster signal on the same day;
when the sea ice thickness H is continuously monitored for N timesi>Beta cm or severe ice stage I of sea icei>% hour, the communication system sends out I (high) grade sea ice disaster signals on the same day;
wherein the value range of N is 72-90, the value range of alpha is 5-10, the value range of beta is 25-35, the value range of gamma is 20-40, and the value range of gamma is 60-80.
(5) When the ice breaking device has faults of blade breakage, motor idling caused by blade blocking, gear abrasion, slipping and the like, the control system transmits fault information to the communication system through electric signals so as to take maintenance measures in time.
(6) The communication system can receive cold tide early warning and other extreme weather early warning information sent by a local weather station, and the ice breaking device and other series of protective measures are started in advance through the control device.
Claims (8)
1. An ice-resisting cone for an offshore structure is characterized by comprising a main body, an ice breaking device, an infrared intelligent high-speed ball, a pressure sensing belt, a monitoring module, a control device and a calculation module;
the main body is two conical structures with the same diameter of the bottom surface, the bottom of each conical structure is a cone, the top of each conical structure is a cylinder, the conical structure on the upper part is a positive cone, the conical structure on the lower part is an inverted cone, and the positive cone is in butt joint fit with the bottom surface of the inverted cone;
the ice breaking device comprises a horizontal blade and a vertical rotating gear, the horizontal blade and the vertical rotating gear are arranged on the outer side of the junction of the forward cone and the reverse cone at intervals, and the vertical rotating gear is in a mutual meshing mode of two gears;
the infrared intelligent high-speed ball is monitoring system equipment integrating the functions of an infrared camera, an intelligent holder system and a communication system, and is arranged on the side wall of the cylinder at the top of the right cone;
the pressure sensing belt is a pressure sensor arranged at the junction of the forward cone and the reverse cone in a surrounding mode, and a rubber belt with the thickness of 5-10 cm is arranged on the surface of the pressure sensor;
the monitoring module is arranged on the side wall of the cylinder at the top of the right cone and comprises a radar system, a communication system, a storage battery and a solar panel, wherein the radar system can perform full-view scanning on sea ice within 2km of the radius of an operation area of the offshore structure, the communication system can receive and send information, the storage battery provides electric energy for the whole ice resisting cone, and the solar panel provides electric energy for the storage battery;
the control device and the calculation module are arranged on the upper part of the right cone and connected with each part of the ice-resistant cone.
2. An anti-ice cone for an offshore structure, according to claim 1, characterized in that the cone angles of the cone bodies of the forward cone and the reverse cone are both 50 ° to 65 °.
3. An ice pick resistant cone for an offshore structure, as claimed in claim 1, wherein said infrared intelligent speed dome is 3 in number and spaced apart on the top cylindrical sidewall of said forward cone.
4. An anti-ice cone for an offshore structure, according to claim 1, wherein electrical heating wires are further provided on said horizontal blades and said vertical turning gear.
5. A process for operating an anti-ice cone for an offshore structure, according to claim 1, characterized in that it comprises the following steps:
step 1) when the floating ice is close to the foundation of the offshore structure and the ice layer is at the junction height of the front cone and the back cone, rotating the horizontal blade and the vertically rotating gear to break the floating ice from the middle and bend the floating ice upwards or downwards, thereby achieving the purpose of reducing the ice load borne by the foundation;
step 2) when the radar system monitors that floating ice is formed within 1km, the infrared intelligent high-speed ball starts to work, the sea surface condition is monitored in real time, when floating ice with the horizontal dimension larger than 20m in a picture is identified to start to approach, the infrared intelligent high-speed ball automatically tracks the floating ice and simultaneously the calculation module starts to work, the infrared intelligent high-speed ball records the actual moving distance L of the floating ice every 5s, and the calculation module calculates the moving speed V of the floating ice according to the formula V, L/TiAnd storing the speed data; wherein i is a natural number, and T is the time required by the floating ice moving distance L;
step 3) when the infrared intelligent high-speed ball monitors that the ice floes are 5-10 m away from the ice cone resistant structure, the pressure sensing belt arranged at the junction of the front cone and the back cone starts to monitor the pressure value P after water pressure is deducted in real timeiThe change of (2):
when P is presenti>x N, the control device is started to rotate the horizontal blade and the gear to separate the ice layer;
when P is presenti<x N stopping the control device;
the rotating speed n of the horizontal blade and the vertical rotating gear is according to the floating ice moving speed ViTo adjust:
when V isi<a cm/s, horizontal blade rotation speed n1Is 2000r/min, the gear rotating speed n2Is 200 r/min;
when a cm/s<Vi<b cm/s, horizontal blade rotation speed n1Is 3000r/min, the gear rotating speed n2Is 300 r/min; when V isi>b cm/s, horizontal blade rotation speed n1Is 5000r/min, the gear rotating speed n2Is 500 r/min;
wherein the value range of x is 100-200, the value range of a is 15-25, and the value range of b is 35-45.
6. The operation process of the ice cone resisting device for the offshore structure as claimed in claim 5, wherein the radar system in the monitoring module is used for performing digital processing and analysis on radar images under different ice conditions to monitor the thickness and the density of the sea ice, wherein the thickness of the sea ice is recorded as H, in order to accurately record and early warn the sea ice condition around the offshore structure and perform risk assessment of sea ice disasteri(ii) a Sea ice concentration is recorded as Ii(ii) a Sea ice information was collected every 10min and data was stored:
when the sea ice thickness H is continuously monitored for N timesi<Alpha cm or severe ice stage I of sea icei<When gamma%, the communication system sends out low-grade sea ice disaster signals on the same day;
when the sea ice thickness is monitored for N times continuously<Hi<Beta cm or sea ice severe ice period gamma%<Di<% hour, the communication system sends out the disaster signal of middle-grade sea ice in the same day;
when the sea ice thickness H is continuously monitored for N timesi>Beta cm or severe ice stage I of sea icei>% hour, the communication system sends out the disaster signal of high-grade sea ice on the same day;
wherein the value range of N is 72-90, the value range of alpha is 5-10, the value range of beta is 25-35, the value range of gamma is 20-40, and the value range of gamma is 60-80.
7. The operation process of the ice pick resistant cone for the offshore structure as claimed in claim 5, wherein when the ice breaking device has faults of blade breakage, motor idling caused by blade locking and gear abrasion slipping, the control system transmits the fault information to the communication system through the electric signal so as to take maintenance measures in time.
8. Process of operating an anti-ice cone for offshore structures, according to claim 5,
the communication system can receive cold tide early warning and other extreme weather early warning information sent by a local weather station, and the ice breaking device and other series of protective measures are started in advance through the control device.
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CN115743440A (en) * | 2022-12-12 | 2023-03-07 | 中国石油大学(华东) | Integrated structure of offshore fixed anti-floating ice photovoltaic power station and installation method |
CN116377988A (en) * | 2023-04-23 | 2023-07-04 | 江苏科技大学 | Ice cone resisting system suitable for multi-pile hydraulic structure in ice area |
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