Airbag-based fan modular intelligent anti-collision device

Abstract

The application discloses a fan modular intelligent anti-collision device based on air bags and belongs to the technical field of fans. The device comprises a plurality of mutually connected housings, a composite air supply assembly, a composite air bag assembly, an intelligent control assembly and a spring buffer device are arranged in the housings. The function of the intelligent control assembly is to predict the impact energy and the collision angle of a collision object and send an inflation instruction to the composite air supply assembly. The composite air supply assembly can inflate small air bags and large air bags respectively. The spring buffer device drives the expansion and contraction of a composite sandwich panel to absorb the energy of a collision object, thereby protecting the composite sandwich panel. Each module can independently complete the protection of the structure of the region where the module is located or can cooperate with other modules to jointly complete the protection of the structure of a large-area fan base. The device is different from traditional fan base anti-collision devices which have fixed protection regions, unchangeable protection angles and limited protection capabilities.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fan, in particular, to a fan modular intelligent anti-collision device based on air bag. BACKGROUND

[0002] With the deepening of the development and utilization of China's marine wind energy resources, marine floating wind turbines, as a stable and clean power supply device, will play an important role in the construction of future deep-sea wind farms. However, marine floating wind farms need to cope with the risk of collision from service vessels and passing ships, which must be considered in the design and development stage.

[0003] The number of offshore wind power equipment is increasing, and these equipment are often located in areas close to the shipping lane, which increases the possibility of collision between ships and offshore wind turbines in severe weather conditions such as marine fog. In addition, wind farms need to be serviced by service vessels on a regular basis, and wind farms are usually located far from the coast, and the sea area where they are located often has large waves, which also increases the risk of collision. Once a ship collision accident occurs, the structure of the wind turbine may be deformed, resulting in a decrease in strength, and may even cause damage to the support platform or tower structure, causing economic losses to the owner, threatening the safety of the ship structure and personnel and equipment on board, and even affecting power supply. Therefore, it is particularly important to improve the safety performance of offshore wind turbine structures and develop new protective equipment. The current anti-collision equipment for offshore wind turbine structures is mainly composed of old tires or rubber bumpers suspended on the surface of the wind turbine base. However, these devices may lose their protective performance due to seawater corrosion after long-term contact with seawater. In addition, due to the randomness of the angle of collision between the ship and the wind turbine, these devices may not be able to continuously and effectively protect the specific area of the wind turbine, thereby greatly reducing the protective effect. SUMMARY

[0004] In view of the above problems, in order to minimize the plastic deformation damage of the main structure of the offshore wind turbine caused by accidental collision of ships, the intelligent anti-collision device is necessary to ensure the structural safety of large offshore wind turbines during the long-term service period. The present application provides a fan modular intelligent anti-collision device based on air bag, which can work independently or in groups for collective protection. In the collision risk scenario, the impact energy to be suffered, the collision angle and the contact surface shape of the protection area can be quickly calculated, and effective protection can be provided through intelligent control.

[0005] The technical scheme of the present application is: the fan modular intelligent anti-collision device based on air bag, characterized in that the air bag protection intelligent device comprises a plurality of interconnected housings.

[0006] A composite gas supply assembly, a composite airbag assembly, an intelligent control assembly and a spring buffer device are arranged in the interior of the shell and connected with each other;

[0007] The composite gas supply assembly comprises a gas supply high-pressure cylinder, a gas trigger, a small gas outlet, a large gas outlet, a "cross" shaped base, an airbag inflation device, a gas conveying channel A and a gas conveying channel B;

[0008] The composite airbag assembly comprises an airbag device protection plate, a storage bin, a small airbag, a large airbag and a gas vent hole;

[0009] The intelligent control assembly comprises an infrared range finder, an image acquisition sensor, a central processing unit and an intelligent valve;

[0010] The spring buffer device comprises at least 8 spring devices and a connecting device;

[0011] The airbag inflation device is arranged at the center of the interior of the shell by means of bolts,

[0012] At least one large pipe and at least four small pipes are arranged in the interior of the airbag inflation device;

[0013] The "cross" shaped base is arranged on the outer wall of the airbag inflation device by means of bolts, and a large gas outlet connected with the large pipe and a small gas outlet connected with the four small pipes are arranged around and in the middle of the base.

[0014] Further, the storage bin is arranged on the base, and a small airbag and a large airbag are arranged in the interior of the storage bin,

[0015] The small airbag is connected with the small gas outlet, and the large airbag is connected with the large gas outlet.

[0016] Further, the infrared range finder, the image acquisition sensor, the central processing unit and the gas trigger are arranged on the inner wall of the shell by means of bolts;

[0017] The gas supply high-pressure cylinder is arranged on the inner wall of the shell by means of two hoops;

[0018] One end of the image acquisition sensor is connected with the infrared range finder through the arranged lead wire,

[0019] The other end of the infrared range finder is connected with the central processing unit through the arranged lead wire,

[0020] The other end of the central processing unit is connected with the gas supply high-pressure cylinder through the arranged lead wire;

[0021] The other end of the gas supply high-pressure cylinder is connected with the large pipe arranged in the interior of the airbag inflation device through the arranged gas conveying channel A,

[0022] One end of the gas trigger is connected to four small pipes in the air bag inflation device through the arranged gas supply channel B.

[0023] Further, an intelligent valve is arranged on the pipe connecting the gas supply high-pressure gas cylinder and the gas supply channel A.

[0024] Further, the large air bag is in a spherical shape and is installed in a reserved storage compartment, the bottom of which is connected to the large air outlet,

[0025] The four small air bags are arranged inside the large air bag, each small air bag is in the shape of a water droplet and is distributed at four fixed points of the storage compartment, and is connected to the small air outlet.

[0026] The surface of the large air bag is composed of composite fiber material and is equipped with annularly arranged air release holes.

[0027] Further, the bottom of the storage compartment is connected to the base through the arranged bolt, and an air bag device protection plate is arranged at the contact surface outside the storage compartment.

[0028] Further, the surface of the shell is covered with a composite material sandwich panel, which is composed of 4 segments and covers the surface of the shell as a whole.

[0029] Further, 8 spring devices are uniformly arranged around the inside of the shell,

[0030] The spring device includes two free-stretching springs and a spring housing, one end of the spring is connected to the bottom of the housing, and the other end is connected to the composite material sandwich panel.

[0031] Further, a connecting device is arranged on each of the two adjacent shells, the connecting device includes two spring housings, the spring housings are fixedly connected to the shell by bolts, a buffer spring is arranged in the spring housing, a ball hinge is further arranged at the other end of the spring housing, one end of the buffer spring is connected to the bottom wall inside the spring housing, and the other end is connected to the ball hinge.

[0032] Two adjacent connecting devices are connected to each other through the arranged ball hinge.

[0033] Further, a working method of a fan modular intelligent anti-collision device based on an air bag is provided, and the specific working steps are as follows:

[0034] Step (1), determine whether the collision object enters the safety radius range of the offshore semi-submersible fan, if not, the intelligent anti-collision device is in standby state, otherwise the intelligent anti-collision device enters the warning state.

[0035] Step (2): The intelligent anti-collision device that enters the early warning state judges whether the collision object poses a risk to the offshore wind turbine based on the environmental information around the semi-submersible wind turbine and the information of the collision object. If there is no risk, it maintains the early warning state; otherwise, it enters the intelligent control block.

[0036] Step (3): The intelligent control module determines whether the energy and speed of the colliding object exceed the specified parameter threshold. If the parameters do not exceed the specified threshold, the spring buffer device is commanded to protect the fan. Otherwise, the airbag protection device will protect the fan.

[0037] Step (4): If the parameters do not exceed the specified threshold, the command of the spring buffer device is triggered. The spring device uses the composite material sandwich plate on the outer surface of the device and the spring buffer device to absorb the energy and impact force of the colliding object. If the parameters exceed the specified threshold, the air supply module controls the inflation of the large and small airbags according to the height difference between the colliding object and the anti-collision device, the navigation direction of the colliding object, the relative position and the shape of the colliding object. The small airbag adjusts the deployment direction of the small airbag according to the navigation direction and the collision position. The above operation means are used to absorb the energy of the colliding object.

[0038] Specifically, the present invention proposes a modular intelligent anti-collision device for wind turbines based on airbags; the airbag protection intelligent device includes several modules, each of which is formed inside a housing; a composite air supply component, a composite airbag component, an intelligent control component, and a spring buffer device are installed inside the housing;

[0039] The composite airbag assembly consists of a large airbag and a small airbag. The surface of the airbag is made of composite fiber material and has annularly arranged vent holes, which has good corrosion resistance and wear resistance. The airbag is installed in a reserved storage compartment. The small airbag is connected to the small air outlet and the large airbag is connected to the large air outlet. These components form a composite airbag assembly.

[0040] The composite air supply component is responsible for supplying gas to the composite airbag component. The gas trigger and high-pressure gas storage cylinder supply gas to the small airbag and the large airbag respectively through the gas supply pipeline. The main function of the composite airbag component is to block the impact force from the outside of the fan base to protect the structural integrity of the fan. The intelligent control component mainly consists of an infrared rangefinder, an image acquisition sensor, and a central processing unit. Its main function is to identify and predict the impact energy and impact angle of the colliding object, and send the inflation command to the composite air supply component through the wire. The composite air supply component supplies gas to the small airbag and the large airbag through the gas supply channel. Based on the predicted impact energy and angle, the intelligent control component is responsible for inflating the large airbag to a suitable pressure and inflating the small airbag to a predetermined pressure, while adjusting the deployment position of the small airbag.

[0041] The large air bag is in a spherical shape, the surface of which is composed of composite fiber material and is equipped with annularly arranged air leakage holes, the large air bag is installed in the storage bin, the bottom of which is connected with the large air outlet, and when the air bag is not unfolded, the large air bag is folded in the storage bin; the four small air bags are arranged inside the large air bag, each of which is in a water-drop-like shape and is distributed at four fixed points of the storage bin and is connected with the small air outlet, and like the large air bag, the small air bags are also folded in the storage bin when unfolded.

[0042] The composite gas supply assembly is characterized in that it is located on one side of the shell; the composite gas supply assembly comprises a gas supply high-pressure gas cylinder, a gas supply pipeline A, a gas supply channel B, a gas trigger, an air bag inflation device and an intelligent valve; the gas trigger and the intelligent valve are controlled by an intelligent control assembly; the gas supply high-pressure gas cylinder is connected with the intelligent valve, and the intelligent valve is connected with the large air outlet through the gas supply pipeline A, and then connected with the large air bag; the gas trigger is connected with the small air outlet through the gas supply channel B, and then connected with the small air bag.

[0043] A storage bin is arranged on the base of the shell, the bottom of the storage bin is connected with the base by bolts, an air bag device protection plate is arranged on the outer contact surface of the storage bin, the base is provided with a large air outlet connected with a large pipeline and a small air outlet connected with four small pipelines around and in the middle of the base, the large air bag and the small air bags inflate the air bags through the large and small air outlets respectively, and when the air bags are not unfolded, the air bags are folded in the storage bin.

[0044] The intelligent control assembly is positioned on one side of the shell, the intelligent control assembly comprises an infrared range finder, an image acquisition sensor, a central processor and a plurality of wires; the wires are connected with the composite gas supply assembly, the infrared range finder, the image acquisition sensor and the central processor respectively; the image acquisition sensor is responsible for identifying potential collision objects around and sea state information near the water area where the ship is located; the infrared range finder cooperates with the image acquisition sensor to send the sea state information and the parameter information of the approaching collision ship to the image processor, the central processor calculates the parameters according to the identified parameter information, and preliminarily calculates the collision danger level of the ship; once the collision danger level of the ship is calculated, whether the air bag needs to be ejected is determined according to the calculated collision energy of the ship; if the collision energy does not reach the threshold value of the air bag ejection, when the fan is subjected to collision, the spring device around the smart anti-collision device and the sandwich panel mainly made of composite material will be used for protection; if the collision energy reaches the threshold value of the air bag ejection, the air bag ejection mode will be used to protect the collision area and the collision surface expected to be contacted in the area, and the shape of the contact surface and the collision angle will be considered; the predicted impact energy will be converted into the appropriate air pressure of the large air bag, and the collision angle of the small air bag will be calculated according to the shape of the collision contact surface and the collision angle.

[0045] The inside of the shell is equipped with a base connected with the storage bin for fixing the storage bin and providing the air bag with a gas supply environment; four small gas outlets and one large gas outlet are arranged in the base; the large gas outlet is located in the middle of the four small gas outlets, the large air bag is connected with the gas supply channel A through the large gas outlet, and then connected with the composite gas supply assembly, and the small air bag is connected with the gas supply channel B through the small gas outlet, and then connected with the composite gas supply assembly.

[0046] The inside of the shell is equipped with spring devices; the spring devices are uniformly arranged around the shell, and there are 8 spring devices, the spring device mainly consists of two free extension springs and a spring shell, one end of the spring is connected with the bottom of the shell, and the other end is connected with the composite sandwich panel; when the energy of the collision object does not reach the threshold value of the air bag explosion, the spring device mainly absorbs and slows down the impact of the collision force through its free extension and other physical principles.

[0047] The surface of the shell is covered with a composite sandwich panel, the back of the composite sandwich panel is connected with the spring device; the composite sandwich panel is composed of 4 segments, which covers the surface of the shell; when the collision energy does not reach the threshold value, it is mainly protected according to the composite sandwich panel and the spring device around; the storage bin is located in the middle of the composite sandwich panel, when the air bag is unfolded, the air bag is ejected from the storage bin in the middle of the composite sandwich panel and covers the surface of the whole composite sandwich panel.

[0048] The connecting device is composed of a ball hinge, a buffer spring and a spring shell, the connecting device is connected with the intelligent anti-collision device through bolts, when the collision object hits the device at a certain angle, in order to prevent the mutual extrusion between the devices causing additional damage, the installation of the connecting device can absorb the horizontal collision energy, preventing the device from being damaged.

[0049] The beneficial effects of the present application are: 1. The present application captures and identifies the potential collision objects and environmental information around the fan through the image acquisition sensor and the infrared range finder, and transmits the identified information to the central processor for analysis and processing and decision-making; the central processor first judges whether the airbag needs to be deployed according to the predicted impact energy of the collision object; if the predicted impact energy is less than the set threshold, the system will rely on the composite material interlayer plate outside the intelligent anti-collision device to protect the fan; if the predicted impact energy exceeds the set threshold, the central processor will inflate the large airbag through the control of the intelligent valve, and adjust the internal pressure of the large airbag according to the predicted impact energy; at the same time, the central processor will also judge which small airbag needs to be inflated according to the predicted impact angle and position of the collision object; this way effectively deals with the tangential force with a certain angle, prevents the device from slipping during the impact process, and ensures the stable position of the device; this provides effective airbag protection for the target area, and solves the problem that the existing protection device relies on a single inflatable closed capsule; through the cooperation of the external large airbag and the internal small airbag, the collision force component perpendicular to the surface of the fan base is fully absorbed, and the collision force component parallel to the surface of the fan base is transferred through the special angle of each module internal small airbag, which can provide precise and effective collision protection, which is different from the traditional anti-collision device with fixed area, unchanged protection angle and limited protection capacity; 2. When installed on the fan base, the present application has high concealment and adaptability; when there is no collision threat, the entire device is fixed by bolts and closely attached to the surface of the fan base, and the airbag is folded and stored inside the shell at this time, so the occupied space and volume are relatively small; at the same time, the external coating of the device is consistent with the color of the fan base, which further enhances its concealment; in addition, according to the structure and needs of the fan base, each shell module can be assembled by adjusting the ball hinge connection, thereby improving the overall adaptability of the device; such design enables the present application to be effectively integrated into various different types and sizes of fan bases, thereby improving the possibility of its wide application. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 is the front view of the present application without airbag in structure;

[0051] Figure 2 is the front view of the present application with airbag in structure;

[0052] Figure 3 is the front view of the shell connected to each other and the composite material interlayer plate arranged outside the shell in the present application;

[0053] Figure 4 is the schematic view of the composite material interlayer plate in the present application;

[0054] Figure 5is the plan view of the composite air bag assembly after inflation in the present application;

[0055] Figure 6 is the structural schematic diagram of the spring device in the present application;

[0056] Figure 7 is the structural schematic diagram of the shell connected by the connecting device in the present application;

[0057] Figure 8 is the schematic diagram of the connecting device in the present application;

[0058] Figure 9 is the schematic diagram of the single spring shell in the present application;

[0059] Figure 10 is the working flow chart of the present application;

[0060] In the figure: 1 is an infrared range finder, 1a is an image acquisition sensor, 2 is a central processing unit, 3 is a gas supply high-pressure gas cylinder, 4 is a gas trigger, 5 is a spring device, 6 is a small gas outlet, 7 is a large gas outlet, 8 is a base, 9 is an air bag inflation device, 10 is an air bag device protection plate, 11 is a storage bin, 12 is a small air bag, 13 is a large air bag, 14 is a gas escape hole, 15a is a gas conveying channel A, 15b is a gas conveying channel B, 16 is a connecting device, 16a is a ball hinge, 16b is a buffer spring, 16c is a spring shell, 17 is a shell, 18 is an intelligent valve, 19 is a composite sandwich panel. DETAILED DESCRIPTION

[0061] In order to more clearly illustrate the technical solutions of the present application, the technical solutions of the present application will be further described in detail below in combination with the drawings:

[0062] As shown in the figure, the fan modular intelligent anti-collision device of the present application is designed based on airbag technology and specially adapted to fan application; the fan base is equipped with multiple functional modules, including a shell 17; the outside of the shell 17 is coupled with a composite sandwich panel 19, and the inside of the shell 17 is embedded with a composite air supply assembly, a composite airbag assembly, an intelligent control assembly, and a spring buffer component; among these modules, the composite airbag assembly is composed of a large airbag 13 and small airbags 12; the composite air supply assembly is responsible for providing air source for the composite airbag assembly; the main function of the composite airbag assembly is to resist ship collision and protect the integrity of the fan structure; the intelligent control assembly is responsible for predicting and calculating the impact energy and collision angle of the object about to collide, and issuing an inflation instruction to the composite air supply assembly according to the prediction result; in this way, the large airbag 13 will be inflated to a predetermined appropriate air pressure, and the small airbags 12 located at the appropriate position will be inflated to a specified air pressure and aimed at the ship about to collide at a predetermined angle; through this combined configuration, the intelligent anti-collision device realizes effective protection of the fan structure, especially in the case of unexpected situations such as ship collision, it can effectively prevent structural damage and ensure the normal operation and service life of the fan.

[0063] Preferably, the large airbag 13 inside the composite airbag assembly is in the shape of a sphere after inflation, the surface material of the large airbag 13 is a composite material, and a circular ring-shaped air release hole 14 is provided; the air release hole is used to balance the air pressure inside the airbag; the small airbags 12 are four, and the four small airbags 12 are respectively located inside the large airbag 13 and distributed at four positions; the small airbags 12 can better separate the horizontal component of the force parallel to the surface of the fan base, so that part of the energy that destroys the fan base structure can be transferred and disappear in the form of surface slip; the use of small airbags 12 ensures that the energy can be balanced and stable when transferred at a given collision angle, avoiding the situation that a single small airbag 12 is unstable in working angle due to small bottom force area, resulting in airbag damage.

[0064] Preferably, the composite gas supply assembly is arranged on one side of the shell 17; the composite gas supply assembly comprises: a gas supply high-pressure cylinder 3, a gas supply channel A 15a, a gas supply channel B 15b, a gas trigger 4 and an intelligent valve 18; wherein the gas trigger 4 and the intelligent valve 18 are both controlled by the intelligent control assembly to achieve fine gas management; the gas supply high-pressure cylinder 3 is connected with the intelligent valve 18, and is responsible for providing stable gas source for the whole system; the intelligent valve is connected with the large air bag 13 through the gas supply channel, and adjusts the air pressure of the large air bag 13 according to the instruction of the intelligent control assembly; in addition, the gas trigger 4 is also connected with the small air bag 12 through the gas supply channel, and its function mainly lies in triggering the inflation of the small air bag 12 quickly according to the instruction of the intelligent control assembly to cope with the sudden collision; this configuration provides a highly integrated composite gas supply system, so that the air bag can accurately charge and discharge according to the real-time instruction of the intelligent control assembly, thereby realizing effective anti-collision protection of the fan.

[0065] Preferably, the inside of the shell 17 is equipped with a central processor 2 and an image acquisition sensor 1a, which work together to identify the real-time parameters of the ship in the surrounding environment; the collected parameter information is immediately transmitted to the central processor 2 for processing and analysis; based on the analysis result, the central processor 2 can accurately control the intelligent valve 18, so that the gas supply high-pressure cylinder 3 supplies gas to the large air bag 13 through the intelligent valve 18 and the air bag gas supply pipeline; and according to the collision parameters of the ship, the central processor 2 can finely adjust the air pressure in the large air bag 13 to achieve the best protection effect; at the same time, the gas trigger 4 is responsible for providing the small air bag 12 with a rated air pressure through the gas supply channel; this configuration ensures that the small air bag 12 can inflate quickly when a collision occurs, so as to fully absorb or transfer the impact energy generated by the ship collision; through this series of control and response mechanism, the device can realize efficient protection of the fan structure and reduce the possible damage caused by the ship collision.

[0066] Preferably, a cross-shaped recess is arranged on the surface of the shell 17, and the recess is internally filled as an air bag storage bin 11; when in a non-emergency state or the large air bag 13 has not been deployed, the large air bag 13 is neatly stored in the cross-shaped recess, and the small air bag 12 is stored in the four corners of the cross-shaped recess; when a collision demand occurs, the small air bag 12 can inflate quickly towards the direction of the ship impact; this design is convenient and fast, so that the small air bag 12 can immediately respond to the direction of the ship impact to provide effective collision protection.

[0067] Preferably, the intelligent control component is composed of a central processor 2, an infrared range finder 1, an image acquisition sensor 1a and a series of wires; the central processor 2 and the image acquisition sensor 1a work together to identify the marine environment around the wind turbine and transmit the parameter information of the surrounding potential collision objects to the image processor for further processing; the task of the infrared range finder 1 is to monitor the position information of the surrounding potential collision objects in real time, and when it identifies that a collision object enters the danger range, the infrared range finder 1 will pass these potential collision information to the upper level; the central processor 2 makes a more in-depth analysis on the information processed by the image acquisition sensor 1a and the infrared range finder 1, and preliminarily calculates whether there is a collision risk; once a collision danger is identified, the central processor 2 will predict the impact energy that the protection area will suffer, the shape of the collision object that will be contacted and the collision angle; if the impact energy does not reach the set threshold, the central processor 2 mainly controls the sandwich plate to absorb the impact energy; if the impact energy exceeds the threshold, the central processor 2 will control the intelligent valve 18 to fill the appropriate air pressure for the air bag 13, and according to the predicted contact surface shape and the collision angle, control the deployment of the small air bag 12 and the adjustment of the collision position; the series of wires are mainly responsible for connecting various components so that they can work together to form a complete system operation.

[0068] By acquiring and processing the information of the sailing direction, relative position, height difference, waterline position, relative speed and surface shape of the collision object, the position where the wind turbine protection area may contact the collision object, i.e. the curvature of the contact surface of the collision object, can be predicted; in addition, the energy impact range that the collision object may bring to the wind turbine base can also be predicted and calculated; after the intelligent control component processes these information, it decides whether the air bag needs to be deployed according to the size of the collision energy, adjusts the air pressure in the air bag according to the collision energy, and controls the deployment position of the small air bag 12 and fine-tunes the collision position according to the predicted contact surface shape and the collision angle; in the composite inflation component, the intelligent valve 18 is triggered to open, so that the high-pressure gas in the gas supply high-pressure cylinder 3 flows in and expands rapidly to form a spherical-shaped large air bag 13; when the pressure in the air bag reaches the optimal air pressure, the intelligent valve 18 automatically closes; at the same time, according to the predicted collision position, it is determined which small air bag 12 in which area needs to be deployed, and the internal air pressure is controlled accordingly.

[0069] Specifically, as shown in Figures 1-2 The present application shows a modular intelligent anti-collision device for offshore wind turbines based on air bags, which mainly provides additional protection measures for offshore wind turbines. Through this device, the safety of the wind turbine can be significantly improved when it is subjected to external impact; as shown in Figure 4As shown, the fan modular intelligent anti-collision device is composed of multiple modules, which are connected through ball hinges 16a; these ball hinges 16a are connected with transverse telescopic springs, and the transverse telescopic springs are connected with the intelligent anti-collision device itself. This design can effectively absorb and disperse the transverse impact force when the ship collision occurs, thereby avoiding damage to the intelligent anti-collision device. The specific structure and composition of the connecting device can be referred to Figure 7 for understanding.

[0070] As Figures 3-4 shown, the module is mainly composed of a shell 17 and a composite material sandwich plate 19 outside the shell; the shell 17 is made of composite material resistant to seawater corrosion and has extrusion resistance, and is fixed with the base 8 of the fan through bolts; the composite material sandwich plate 19 is I-shaped and also made of composite material, showing superior impact resistance; the square cavity inside the composite material sandwich plate 19 can be filled with energy-absorbing materials such as aluminum foam to further improve its impact resistance; in addition, a cross recess is designed in the middle of the composite material sandwich plate 19, mainly for placing a composite air bag assembly; when the impact energy calculated by the central processor 2 is less than the preset threshold value, the air bag of the intelligent anti-collision device will not start; in this case, the composite material sandwich plate 19 outside the shell 17 is mainly relied on to protect the fan.

[0071] As Figure 5 shown, the composite air bag assembly is mainly composed of a large air bag 13 and a small air bag 12 located around the cross recess; the composite air bag assembly is made of composite knitted material with high seawater corrosion resistance; when the collision energy calculated by the central processor 2 exceeds the preset threshold value, the processor will send a start instruction to the intelligent valve 18; then, the gas supply high-pressure gas cylinder 3 fills the large air bag 13 with appropriate gas pressure through the intelligent valve 18; according to the impact angle and impact position of the collision object, the central processor 2 will control the small air bag 12 at the corresponding position to pop up and adjust its impact angle. The main function of this composite air bag assembly is to resist the impact force outside the fan base, thereby protecting the integrity of the fan base structure.

[0072] The intelligent control assembly is mainly composed of an image acquisition sensor 1a, an infrared range finder 1, a central processor 2 and a plurality of electrically connected wires; the wires are electrically connected with the intelligent valve 18 and the gas trigger 4 in the composite gas supply assembly; the main function of the image acquisition sensor 1a is to acquire and identify the potential collision objects around and the sea state information near the water area where the ship is located; the infrared range finder 1 cooperates with the image acquisition sensor 1a to transmit the environmental information and the obstacle information to the central processor 2; the central processor 2 firstly performs preliminary calculation on the information to evaluate whether there is a collision danger; once it is determined that there is a collision danger, the processor will calculate the energy impact to be received and the expected collision object contact surface shape and the collision angle; then, the central processor 2 will convert the predicted impact energy into the appropriate air pressure required by the large air bag 13; at the same time, according to the collision contact surface shape and the collision angle, the appropriate collision position of the small air bag 12 is calculated and set.

[0073] The composite gas supply assembly is mainly composed of a gas supply high-pressure gas cylinder 3, a gas conveying channel A 15a, a gas conveying channel B 15b, a gas trigger 4 and an intelligent valve 18; wherein the gas trigger 4 and the intelligent valve 18 are electrically connected with the intelligent control assembly; the gas supply high-pressure gas cylinder 3 is installed in the shell 17, which controls the opening and closing of the intelligent valve 18 according to the information feedback by the intelligent control assembly, so as to provide the most suitable internal pressure for the large air bag 13; at the same time, the gas trigger 4 provides a preset air pressure for the small air bag 12, which can help to fully absorb the energy generated by the collision; since the external large air bag 13 is mainly used for energy dissipation to cope with different levels of impact energy, different internal pressures will bring different protection effects, therefore, the internal pressure of the large air bag 13 needs to be adjusted to adapt to different levels of impact energy; and for the small air bag 12 without a gas vent, it only needs to be inflated to a preset pressure.

[0074] The cross-shaped storage bin 11 is arranged in the groove on the outer surface of the intelligent anti-collision device, which provides sufficient space to fold and place the air bag when the air bag is not unfolded, so as to greatly save the space of the equipment; as shown in Figure 5As shown, the large air bladder 13 is designed as a spherical structure with annularly arranged vent holes 14 on its surface. These vent holes 14 provide ample energy buffering and dissipation channels for the large air bladder 13. During a collision, the large air bladder 13 absorbs energy not only through volume compression but also dissipates a significant amount of energy through the vent holes 14. Inside the large air bladder 13, near the vent, is a circular support frame 27, which expands the bottom of the large air bladder 13 to allow for the symmetrical arrangement of four smaller air bladders 12. These four smaller air bladders 12 have a teardrop-shaped design, with one end larger than the other. The inflation port is located on the back side of each smaller air bladder 12 and is sealed to ensure good airtightness. All air bladders are made of leak-proof and breathable materials to ensure they will not be damaged or leak even after withstanding sufficient external impact.

[0075] The intelligent control component sends a gas supply command to the composite gas supply component, activating the intelligent valve 18 within it. This allows high-pressure gas from the high-pressure gas storage cylinder 3 to rapidly enter and inflate the external spherical large air bladder 13. When the internal pressure of the large air bladder 13 reaches the optimal level, the intelligent valve 18 closes. Simultaneously, the gas trigger 4 is activated, igniting and inflating the internal teardrop-shaped small air bladder 12. This design and workflow are intended to ensure that the equipment provides effective protective force in the event of a collision, offsetting the impact force and protecting the integrity of the fan structure. By timely inflation and pressure control, the anti-collision device can respond quickly to collision events and provide appropriate protection.

[0076] like Figures 7-9 As shown, the spring devices 5 are distributed around the shell 17, with a total of 8 spring devices 5. When the impact energy of the colliding object calculated by the central processing unit 2 does not exceed the threshold, the spring devices 5 and the composite material sandwich plate 19 on the outside of the shell 17 work together to absorb the energy of the colliding object. The spring devices 5 provide buffering and absorption of the collision energy through their free up-and-down extension and retraction. At the same time, the composite material sandwich plate 19 on the outside of the shell 17 also participates in the energy absorption process. This design enables the device to effectively absorb the collision energy and protect the wind turbine structure from damage.

[0077] The working principle of the application is as follows: when the collision object does not reach the safety distance of the offshore wind turbine, the device is in standby state, when the safety distance is reached, the device enters the early warning state, the device judges whether the wind turbine will be at risk according to the surrounding environmental information and the collision object information, if it is judged that the risk will occur, the intelligent control module judges whether to issue an instruction to the airbag module or the spring buffer device according to the speed of the collision object and whether the collision energy exceeds the threshold value, if the threshold value is not exceeded, the spring buffer device is instructed to use the interlayer plate and the spring to protect the wind turbine; if the threshold value is exceeded, the air supply module controls the inflation of the large airbag according to the height difference, the sailing direction, the relative position and the shape of the collision object, and adjusts the unfolding direction and position of the small airbag according to the sailing direction and the collision position of the collision object.

[0078] Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the application; other variations can be possible within the scope of the application; therefore, alternative arrangements of the embodiments of the application can be considered as consistent with the teachings of the application; accordingly, the embodiments of the application are not limited to the embodiments explicitly introduced and described herein.

Claims

1. An airbag based fan modular smart crash avoidance device, characterized by, The airbag protection intelligent device comprises a plurality of mutually connected housings (17); A composite gas supply assembly, a composite airbag assembly, an intelligent control assembly and a spring buffer device are arranged in the housing (17); The composite gas supply assembly comprises a gas supply high-pressure gas cylinder (3), a gas trigger (4), a small gas outlet (6), a large gas outlet (7), a "cross-shaped" base (8), an airbag inflation device (9), a gas conveying channel A (15a) and a gas conveying channel B (15b); The composite airbag assembly comprises an airbag device protection plate (10), a storage bin (11), a small airbag (12), a large airbag (13) and a gas escape hole (14); The intelligent control assembly comprises an infrared range finder (1), an image acquisition sensor (1a), a central processor (2) and an intelligent valve (18); The spring buffer device comprises at least 8 spring devices (5) and a connecting device (16); The airbag inflation device (9) is arranged at the center of the housing (17) by bolts, At least one large pipe and at least four small pipes are arranged in the airbag inflation device (9); The "cross-shaped" base (8) is arranged on the outer wall of the airbag inflation device (9) by bolts, and a large gas outlet (7) connected to the large pipe and a small gas outlet (6) connected to the four small pipes are arranged around and in the middle of the base (8); A composite material sandwich panel (19) is arranged on the surface of the housing (17), the composite material sandwich panel (19) is composed of 4 segments and covers the surface of the housing (17) as a whole; 8 spring devices (5) are evenly arranged around the inside of the housing (17), The spring device (5) comprises two free extension springs (5a) and a spring housing (5b), one end of the spring (5a) is connected to the bottom of the housing (17), and the other end is connected to the composite material sandwich panel (19); A connecting device (16) is arranged on each of the two adjacent housings (17), the connecting device (16) comprises two spring housings (16c), the spring housings (16c) are fixedly connected to the housings (17) by bolts, a buffer spring (16b) is arranged in the spring housing (16c), a ball hinge (16a) is further arranged at the other end of the spring housing (16c), one end of the buffer spring (16b) is connected to the bottom wall in the spring housing (16c), and the other end is connected to the ball hinge (16a); Two adjacent connecting devices (16) are connected to each other by the arranged ball hinges (16a).

2. The airbag-based fan modular intelligent anti-collision device of claim 1, wherein A storage bin (11) is arranged on the base (8), a small airbag (12) and a large airbag (13) are arranged in the storage bin (11), The small airbag (12) is connected to the small gas outlet (6), and the large airbag (13) is connected to the large gas outlet (7).

3. The airbag-based fan modular intelligent anti-collision device according to claim 2, characterized in that, the infrared range finder (1), the image acquisition sensor (1a), the central processor (2) and the gas trigger (4) are arranged on the inner wall of the shell (17) by bolts; the gas supply high-pressure cylinder (3) is arranged on the inner wall of the shell (17) by two hoops; one end of the image acquisition sensor (1a) is connected to the infrared range finder (1) through the arranged wire, the other end of the infrared range finder (1) is connected to the central processor (2) through the arranged wire, the other end of the central processor (2) is connected to the gas supply high-pressure cylinder (3) through the arranged wire; the other end of the gas supply high-pressure cylinder (3) is connected to the large pipeline inside the airbag inflator (9) through the arranged gas supply channel A (15a), one end of the gas trigger (4) is connected to the four small pipelines inside the airbag inflator (9) through the arranged gas supply channel B (15b).

4. The airbag-based fan modular intelligent anti-collision device according to claim 3, characterized in that, an intelligent valve (18) is further arranged on the pipeline connecting the gas supply high-pressure cylinder (3) and the gas supply channel A (15a).

5. The airbag-based fan modular intelligent anti-collision device according to claim 1, characterized in that, the large airbag (13) is in the shape of a sphere and is installed in the reserved storage bin (11), with its bottom connected to the large air outlet (7), the small airbags (12) are four in number and are arranged inside the large airbag (13), each small airbag (12) being in the shape of a water droplet and being distributed at four fixed points of the storage bin (11) and connected to the small air outlet (6); the surface of the large airbag (13) is composed of composite fiber material and is equipped with annularly arranged air vents (14).

6. The airbag-based fan modular intelligent anti-collision device according to claim 1, characterized in that, the bottom of the storage bin (11) is connected to the base (8) through the arranged bolts, and an airbag device protection plate (10) is arranged at the contact surface outside the storage bin (11).

7. A method of operating an airbag-based fan modular smart crash avoidance device according to any one of claims 1-6, wherein, The specific working steps are as follows: Step (1), determine whether the collision object enters the safety radius range of the offshore semi-submersible wind turbine, if not, the intelligent anti-collision device is in standby state, otherwise the intelligent anti-collision device enters the early warning state; Step (2), the intelligent anti-collision device in the early warning state determines whether the collision object is a risk to the offshore wind turbine according to the environmental information around the offshore semi-submersible wind turbine and the information of the collision object, if not, the early warning state is maintained, otherwise the intelligent control block is entered; Step (3), the intelligent control module determines whether the energy and speed of the collision object exceed the specified parameter threshold, if not, the spring buffer device is commanded to protect the wind turbine, otherwise the airbag protection device protects the wind turbine. Step (4), if the parameters do not exceed the specified threshold, the command of the spring buffer device is triggered, then the spring device (5) uses the composite sandwich panel (19) on the surface of the device and the spring buffer device to absorb the energy and impact force of the collision object; if the parameters exceed the specified threshold, the air supply module controls the inflation of the small airbag according to the height difference between the collision object and the anti-collision device, the sailing direction of the collision object, the relative position and the shape of the collision object, wherein the small airbag (12) adjusts the deployment direction of the small airbag (12) according to the sailing direction and the collision position, and uses the above operation means to absorb the energy of the collision object.

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