Ice-resistant device suitable for slender flexible component

Abstract

The invention discloses an ice-resistant device suitable for a long and thin flexible component, and relates to the technical field of oil and gas exploitation, and the ice-resistant device comprises a mounting piece fixed on the long and thin flexible component; the ice-resistant structures are arranged in a circumferential array by taking the center of the mounting piece as a circle center, each ice-resistant structure comprises a first connecting piece and a second connecting piece, one end of each first connecting piece is rotationally connected with the corresponding second connecting piece, and the other end of each first connecting piece is rotationally connected with the mounting piece; the energy charging component is arranged between each group of ice-resistant structures and the mounting piece, one end of the energy charging component is connected with the mounting piece, and the other end of the energy charging component is connected with the first connecting piece; the second connecting piece is connected with the long and thin flexible component through the conveying assembly, and the conveying assembly is used for converting linear motion of the end of the second connecting piece into rolling motion of the conveying assembly. The energy charging component is matched with the ice-resistant structure, so that the device can automatically adjust ice-resistant response according to the size of ice load, and floating ice of different scales can be effectively handled.

Description

Technical Field

[0001] This application relates to the technical field of oil and gas exploitation, and particularly to an anti-icing device applicable to slender flexible members. Background Art

[0002] For a floating drilling platform using a slender flexible member system, the slender flexible member is a key component connecting the subsea wellhead and the drilling equipment on the sea surface. The part near the water surface is directly exposed to the sea ice environment and is vulnerable to the impact and extrusion of floating ice. Therefore, a special anti-icing protection device is required. The existing anti-icing solutions are as follows:

[0003] ① Conical anti-icing device: Install a fixed regular cone or inverted cone structure at the water surface position of the slender flexible member to reduce the ice load by changing the movement direction of the floating ice or breaking the floating ice. This solution refers to the anti-icing design of the piles of jacket platforms and is currently the most commonly used solution.

[0004] ② Heating system: Install heating elements on the surface of the slender flexible member to melt the floating ice in contact with the slender flexible member and reduce the ice load. This solution has high energy consumption and limited effect under extremely cold conditions.

[0005] ③ Bubble curtain system: Release bubbles around the slender flexible member to form an upward water flow to prevent floating ice from approaching the slender flexible member. This solution has poor effect under the condition of large floating ice.

[0006] ④ Active ice-breaking system: Use mechanical devices to actively break the floating ice approaching the slender flexible member. Such systems are highly complex and have high maintenance costs. Summary of the Invention

[0007] This application aims to solve one of the above technical problems in the prior art. To this end, an embodiment of this application provides an anti-icing device applicable to slender flexible members.

[0008] According to an embodiment of this application, there is provided an anti-icing device applicable to slender flexible members, including a mounting member fixed on the slender flexible member;

[0009] A plurality of groups of anti-icing structures, the anti-icing structures are arranged in a circumferential array with the center of the mounting member as the center of the circle. The anti-icing structure includes a first connecting member and a second connecting member. One end of the first connecting member is rotatably connected to the second connecting member, and the other end of the first connecting member is rotatably connected to the mounting member;

[0010] Energy storage member, the energy storage member is provided between each group of the anti-ice structures and the mounting member. One end of the energy storage member is connected to the mounting member, and the other end of the energy storage member is connected to the first connecting member, so that the included angle between the first connecting member and the mounting member is maintained within a preset angle range. Wherein, the energy storage member can be compressed;

[0011] Transmission assembly, the second connecting member is connected to the slender flexible member through the transmission assembly, and the transmission assembly is used to convert the linear motion of the end of the second connecting member into the rolling motion of the transmission assembly itself.

[0012] The above anti-ice device applicable to slender flexible members has at least the following beneficial effects: When there is no impact of floating ice, the anti-ice structures are evenly distributed around the slender flexible member, the first connecting member and the second connecting member maintain a certain angle, and the energy storage member is in a natural state; When the floating ice approaches and impacts, it first contacts the first connecting member. After the first connecting member is stressed, it moves towards the slender flexible member and compresses the energy storage member, and at the same time drives the second connecting member to move downward. The upper plate of the second connecting member maintains a stable relative position with the slender flexible member through the transmission assembly; As the floating ice continuously pushes the first connecting member, the energy storage member is further compressed, converting the kinetic energy of the floating ice into elastic potential energy and storing it. At the same time, the change in the angle of the first connecting member guides the floating ice to change its movement direction, reducing its direct impact on the slender flexible member; When the floating ice passes through, the compressed energy storage member releases its potential energy, pushing the first connecting member back to its original position, and at the same time driving the first connecting member back to its initial position. The energy released during this process can push away or break small floating ice around, preventing ice from accumulating around the slender flexible member. Compared with the prior art, in this application, through the cooperation of the energy storage member and the anti-ice structure, the device can automatically adjust the anti-ice response according to the size of the ice load and effectively respond to floating ice of different scales; And the energy storage member cooperating with the anti-ice structure can also capture the kinetic energy of the floating ice and convert it into elastic potential energy, and then use this energy to push away or break the floating ice, realizing the recycling of energy.

[0013] According to the anti-ice device applicable to slender flexible members described in the embodiment of the present application, the range of the preset angle is set to 20° to 50°, and when the first connecting member is not subjected to external force, the angle between the first connecting member and the mounting member is 50°.

[0014] According to the anti-ice device applicable to slender flexible members described in the embodiment of the present application, the mounting member is a circular plate, and a through hole for the slender flexible structural member to pass through is provided at the center of the mounting member. The diameter of the through hole is 5 to 10 cm larger than the outer diameter of the slender flexible member.

[0015] According to the anti-ice device applicable to slender flexible members described in the embodiment of the present application, the ratio of the diameter of the mounting plate to the diameter of the slender flexible member is 3 to 4.

[0016] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application, wherein the energy - storing member is a metal spring or a nitrogen spring.

[0017] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application further includes a power - generating unit. The power - generating unit is arranged on the energy - storing member and can convert the deformation of the energy - storing member into electric energy.

[0018] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application, wherein the first connecting member is a plate member, and an arc surface, a stepped surface or a wavy curved surface is arranged on the side of the first connecting member away from the energy - storing member.

[0019] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application, wherein the transmission assembly includes a gear and a rack. The rack is fixed to the slender flexible member, the gear is rotatably arranged on the second connecting member, and the gear is in a meshing state with the rack.

[0020] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application, wherein the end of the first connecting member is hingedly connected to the mounting member through a fastening structure.

[0021] The ice - resisting device applicable to slender flexible members according to the embodiments of the present application, wherein the fastening structure includes a first fastener and a second fastener. Both ends of the first fastener are provided with connecting sections, and the connecting sections can rotate to be perpendicular to the first fastener. Wherein, the first connecting member is provided with a through - hole for the first fastener to pass through, the mounting plate is provided with mounting holes for the connecting sections to pass through, and the connecting sections are threadedly connected to the second fastener after passing through the mounting holes.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0023] The present application will be further described below in conjunction with the drawings and embodiments;

[0024] Figure 1 is a schematic structural diagram of the ice - resisting device applicable to slender flexible members according to the embodiments of the present application Figure 1 ;

[0025] Figure 2 is a schematic structural diagram of the ice - resisting device applicable to slender flexible members in the embodiments of the present application Figure 2 ;

[0026] Figure 3This is a schematic diagram of an ice-resistant device applicable to slender flexible members in an embodiment of the present application. Figure 3 ;

[0027] Figure 4 This is a schematic diagram of an ice-resistant device applicable to slender flexible members in an embodiment of the present application. Figure 4 ;

[0028] Figure 5 This is a schematic diagram of an ice-resistant device applicable to slender flexible members in an embodiment of the present application. Figure 5 .

[0029] Reference numerals: mounting member 110, through hole 111, first connecting member 120, energy storage member 130, second connecting member 140, gear 150, rack 160, first fastener 171, second fastener 172, slender flexible member 200. Detailed implementation manners

[0030] This part will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0031] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present application, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0034] With the continuous growth of global energy demand, the development of offshore oil and gas resources has become increasingly important. The development of oil and gas resources in the Arctic has become an important direction for energy security. The development of oil and gas resources in the Arctic and other cold regions faces severe environmental challenges, among which the impact of sea ice on offshore engineering structures is one of the most important issues. When conducting oil and gas development in cold waters, the interaction between floating ice and offshore engineering structures will generate significant ice loads, which may lead to structural vibration, fatigue damage, and even structural failure.

[0035] The specifications of the International Association of Classification Societies (IACS) require that the ice protection device should achieve maintenance-free operation for at least 10 years within the temperature range of -50°C to +30°C. However, the existing technologies are difficult to meet the dynamic adaptability requirements under complex ice conditions. According to the Chinese sea ice conditions and application standards (Q / HSn 3000), offshore platforms operating in ice areas need to have sufficient ice resistance. For floating drilling platforms using slender flexible member systems, the slender flexible members are key components connecting the subsea wellhead and the surface drilling equipment. The part near the water surface is directly exposed to the sea ice environment and is vulnerable to the impact and extrusion of floating ice. Therefore, special ice protection devices are required.

[0036] The main disadvantages of the existing technologies are as follows: (1) Poor adaptability: The traditional conical ice protection device is a fixed structure and cannot automatically adjust its ice resistance performance according to different ice conditions, resulting in insufficient adaptability in the complex and changeable sea ice environment; (2) Low energy utilization efficiency: Most of the existing devices passively withstand ice forces and do not effectively utilize the kinetic energy of floating ice. Instead, they even need to consume additional energy to melt or break floating ice; (3) Difficult maintenance: Most of the traditional ice protection devices are fixedly connected. Once damaged or in need of replacement, the maintenance operations are complex and require a large amount of manpower and material resources; (4) Poor height adaptability: Since the sea surface height changes with the tide and the floating platform also floats up and down with the sea conditions, the fixed ice protection device is difficult to adapt to this height change and is prone to insufficient protection; (5) Ice accumulation problem: The traditional ice-breaking device will generate a large amount of broken ice, which may accumulate around the slender flexible members, forming a new source of ice load.

[0037] Therefore, referring to Figures 1 to 3 , an ice protection device applicable to the slender flexible member 200 is provided in an embodiment of the present application, including a mounting member 110, several groups of ice protection structures, an energy storage member 130, and a transmission assembly.

[0038] The mounting member 110 is fixed on the slender flexible member 200. As the installation foundation for other components of the entire device, the mounting member 110 needs to have a certain structural rigidity. And because it needs to be immersed in seawater and low-temperature environment for a long time, it also needs to have the function of resisting corrosion. Therefore, the mounting member 110 is made of high-strength alloy material and has sufficient stiffness and strength to withstand the impact of sea ice.

[0039] Several groups of ice-resistant structures are arranged in a circumferential array with the center of the mounting member 110 as the center. The ice-resistant structure includes a first connecting member 120 and a second connecting member 140. One end of the first connecting member 120 is rotatably connected to the second connecting member 140, and the other end of the first connecting member 120 is rotatably connected to the mounting member 110. Wherein, one end of the second connecting member 140 abuts and connects the slender flexible member 200, so that the ice-resistant structure has a certain deformation space.

[0040] As Figure 1 and Figure 2 shown, an energy storage member 130 is provided between each group of ice-resistant structures and the mounting member 110. One end of the energy storage member 130 is connected to the mounting member 110, and the other end of the energy storage member 130 is connected to the first connecting member 120, so that the included angle between the first connecting member 120 and the mounting member 110 is maintained within a preset angle range. Wherein, the energy storage member 130 can be compressed, effectively reducing the impact kinetic energy brought by the floating ice.

[0041] The second connecting member 140 is connected to the slender flexible member 200 through a transmission assembly, and the transmission assembly is used to convert the linear motion of the end of the second connecting member 140 into the rolling motion of the transmission assembly itself.

[0042] Normal state: When there is no impact from floating ice, the ice-resistant structures are evenly distributed around the slender flexible member 200. The first connecting member 120 and the second connecting member 140 maintain a certain angle, and the energy storage member 130 is in a natural state.

[0043] Ice impact state: When approached and impacted by floating ice, it first contacts the first connecting member 120. After the first connecting member 120 is stressed, it moves towards the slender flexible member 200 and compresses the energy storage member 130, and at the same time drives the second connecting member 140 to move downward. The upper plate of the second connecting member 140 maintains a stable relative position with the slender flexible member 200 through the transmission assembly.

[0044] Energy storage stage: As the floating ice continuously pushes the first connecting member 120, the energy storage member 130 is further compressed, converting the kinetic energy of the floating ice into elastic potential energy and storing it. At the same time, the angle change of the first connecting member 120 guides the floating ice to change its movement direction, reducing its direct impact on the slender flexible member 200.

[0045] Energy release stage: When the floating ice passes by, the compressed energy storage member 130 releases its potential energy, pushing the first connecting member 120 back to its original position, and at the same time driving the first connecting member 120 back to its initial position. The energy released during this process can push away or break the surrounding small floating ice, preventing the ice from accumulating around the slender flexible member 200.

[0046] Compared with the prior art, in this application, the energy storage component 130 cooperates with the anti-ice structure, enabling the device to automatically adjust the anti-ice response according to the size of the ice load and effectively cope with floating ice of different scales. Moreover, the energy storage component 130 cooperating with the anti-ice structure can also capture the kinetic energy of the floating ice and convert it into elastic potential energy, and then use this energy to push away or break the floating ice, realizing the recycling of energy. When the energy storage component 130 releases energy, it can drive the first connecting member 120 to actively push away the surrounding floating ice, reducing the possibility of ice accumulation around the slender flexible member 200. By dispersing the ice load onto multiple anti-ice structures and the energy storage component 130, the stress level of a single component is reduced, and the service life of the entire device is extended.

[0047] In the embodiment of this application, eight groups of anti-ice structures are provided. The eight groups of anti-ice structures are arranged in a circumferential array with the slender flexible member 200 as the center. An angle is set between the first connecting member 120 and the mounting member 110, which can form an inclined plane to guide the floating ice and reduce the frontal impact of the floating ice. The 8 anti-ice structures are evenly distributed to form 360° all-round protection, and can effectively cope with floating ice approaching from any direction.

[0048] Among them, the first connecting member 120 is made of a high-strength composite material. The outer surface of the first connecting member 120 is designed as a smooth inclined plane, which can effectively guide the floating ice to slide along its surface and reduce the direct impact force. The bottom of the first connecting member 120 is connected to the mounting member 110 through the energy storage component 130, allowing the first connecting member 120 to have a certain displacement when subjected to ice force.

[0049] In some embodiments, the first connecting member 120 and the second connecting member 140 are connected by a hinge to form a foldable structure. The top of the second connecting member 140 is connected to the slender flexible member 200 through a transmission component, enabling the second connecting member 140 to adjust its position as the height of the slender flexible member 200 changes. The second connecting member 140 is made of a lightweight and high-strength material, and its surface is coated with an anti-ice coating to reduce ice adhesion. The hinge is made of a special alloy resistant to low temperature and corrosion, ensuring normal operation in extremely cold environments. The hinge is designed with a limiting mechanism to prevent the anti-ice structure from folding excessively.

[0050] In the embodiment of this application, the range of the preset angle between the first connecting member 120 and the mounting member 110 is set to 20° to 50°. When the first connecting member 120 is not subjected to external force, the angle between the first connecting member 120 and the mounting member 110 is 50°.

[0051] Initial state (maximum included angle, minimum compression amount): When the included angle between the first connecting member 120 and the mounting member 110 is at the maximum value of 50 degrees (such as Figure 3 and Figure 4As shown, without external floating ice load or only bearing the self - gravity of the ice - resistant plate assembly), the energy - storing member 130 is in the minimum compression state during its working stroke. At this time, the elastic force provided by the energy - storing member 130 is balanced with the effective gravity components of the first connecting member 120 and the second connecting member 140. The spring elastic force in this balanced state is set as F min≈800N.

[0052] Limit state (minimum angle, maximum compression): When the first connecting member 120 is subjected to the maximum floating ice impact force that it can withstand in its design, and the angle with the mounting member 110 is compressed to the minimum value of 20 degrees (as Figure 5 shown), the energy - storing member 130 is in the maximum compression state during its working stroke. At this time, the elastic force provided by the energy - storing member 130 reaches the maximum value to balance the gravity component of the ice - resistant plate assembly and the maximum floating ice impact force. The spring elastic force in this limit state is set as F max≈8000N.

[0053] Force change during the working stroke: During the process where the angle between the first connecting member 120 and the mounting member 110 changes from 50° to 20°, the elastic force of the energy - storing member 130 increases linearly or approximately linearly from about 800N to about 8000N.

[0054] The effective compression amount (Δxcompression) of the energy - storing member 130: When the angle between the first connecting member 120 and the mounting member 110 moves from the 50° position to the 20° position, the effective compression amount (or stroke) generated by the energy - storing member 130 along its axis direction is determined as Δxcompression = 0.5m.

[0055] In the embodiment of the present application, the energy - storing member 130 is a metal spring or a nitrogen spring. Specifically, the energy - storing member 130 is a metal spring, and the spring is made of silicon - manganese spring steel (such as 60Si2MnA) and is subjected to surface anti - corrosion treatment (such as epoxy coating or professional anti - corrosion plating). This material has high strength, excellent fatigue resistance and necessary corrosion resistance.

[0056] In some embodiments of the present application, the mounting member 110 is a circular plate, and a through - hole 111 for a slender flexible structure member to pass through is provided at the center of the mounting member 110. The diameter of the through - hole 111 is 5 - 10 cm larger than the outer diameter of the slender flexible member 200, so as to make the installation and disassembly more convenient.

[0057] In some embodiments, the ratio of the diameter of the mounting plate to the diameter of the slender flexible member 200 is 3 - 4. If the diameter of the mounting plate is too small, it is easy to cause the inability to resist larger floating ice.

[0058] In some embodiments, the anti-icing device applicable to the slender flexible member 200 further includes a power generation unit disposed on the energy storage member 130. The power generation unit can convert the deformation of the energy storage member 130 into electrical energy for storage, which is used to drive the heating system or the monitoring system.

[0059] In some embodiments, the first connecting member 120 is a plate member, and an arc surface, a stepped surface or a wavy curved surface is provided on the side of the first connecting member 120 away from the energy storage member 130 to optimize its guiding and crushing effects on different types of floating ice.

[0060] In some embodiments, the transmission assembly includes a gear 150 and a rack 160. The rack 160 is fixed to the slender flexible member 200 and is arranged along the axial direction of the slender flexible member 200. The gear 150 is rotatably arranged on the second connecting member 140, and the gear 150 is in a meshing state with the rack 160.

[0061] In some embodiments, as Figure 1 and Figure 4 shown, the end of the first connecting member 120 is hingedly connected to the mounting member 110 through a fastening structure.

[0062] Specifically, the fastening structure includes a first fastener 171 and a second fastener 172. Both ends of the first fastener 171 are provided with connecting sections, and the connecting sections can be rotated to be perpendicular to the first fastener 171. Among them, the first connecting member 120 is provided with a through hole for the first fastener 171 to pass through, and the mounting plate is provided with mounting holes for the connecting sections to pass through. After the connecting sections pass through the mounting holes, they are threadedly connected to the second fastener 172, and the second adjacent fastener and the first fastener 171 are respectively arranged on both sides of the mounting member 110.

[0063] The design of the fastening structure makes the maintenance of the anti-icing structure more convenient.

[0064] Compared with the existing anti-icing technology of the slender flexible member 200, the present application has the following remarkable advantages:

[0065] (1) Intelligent adaptability: Different from traditional fixed anti-icing devices, the present application realizes intelligent adaptation to different ice conditions through an elastic mechanism, and can automatically adjust the response intensity according to the magnitude of the ice load.

[0066] (2) Energy recycling: The present application innovatively uses the kinetic energy of the floating ice itself, converts it into elastic potential energy through a spring and then reuses it, greatly improving the energy efficiency.

[0067] (3) Active anti-icing: Most traditional anti-icing devices are passive protection, while in the present application, during the spring release stage, it can actively push away the surrounding floating ice to prevent ice accumulation.

[0068] (4) Modular design: This device adopts a modular design, and each component can be independently disassembled and replaced, greatly improving the maintenance efficiency and economy.

[0069] (5) Omnidirectional protection: Eight anti-ice plates are evenly distributed to form 360° omnidirectional protection. No matter from which direction the floating ice approaches, it can be effectively dealt with.

[0070] In summary, this application provides an anti-ice device for the slender flexible member 200 with an adaptive elastic adjustment function. Through innovative mechanical structure design and energy conversion mechanism, the safety and reliability of the slender flexible member 200 in ice area operations are significantly improved, providing important technical support for the development of marine oil and gas resources, especially for resource development in the Arctic region.

[0071] The above has described the embodiments of the present application in detail with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present application.

Claims

1. An anti-icing device applicable to slender flexible components, characterized in that: including a mounting member fixed to the slender flexible member; a plurality of groups of anti-icing structures, the anti-icing structures being arranged in a circumferential array with the center of the mounting member as the center of the circle, the anti-icing structures including a first connecting member and a second connecting member, one end of the first connecting member being rotatably connected to the second connecting member, and the other end of the first connecting member being rotatably connected to the mounting member; an energy storage member, an energy storage member being provided between each group of anti-icing structures and the mounting member, one end of the energy storage member being connected to the mounting member, and the other end of the energy storage member being connected to the first connecting member, so that the included angle between the first connecting member and the mounting member is maintained within a preset angle range, wherein the energy storage member can be compressed; a transmission assembly, the second connecting member being connected to the slender flexible member through the transmission assembly, and the transmission assembly being configured to convert the linear motion of the end of the second connecting member into the rolling motion of the transmission assembly itself.

2. The anti-icing device applicable to an elongate flexible member according to claim 1, wherein: The range of the preset angle is set to 20° to 50°, and when the first connecting member is not subjected to an external force, the angle between the first connecting member and the mounting member is 50°.

3. The anti-icing device applicable to the slender flexible member according to claim 1, characterized in that: The mounting member is a circular plate, and a through hole for the slender flexible structural member to pass through is provided at the center of the mounting member, and the diameter of the through hole is 5 to 10 cm larger than the outer diameter of the slender flexible member.

4. The anti-icing device applicable to a slender flexible member according to claim 3, characterized in that: The ratio of the diameter of the mounting plate to the diameter of the slender flexible member is 3 to 4.

5. The anti-icing device applicable to an elongated flexible member according to claim 1, characterized in that: The energy storage member is a metal spring or a nitrogen spring.

6. The anti-icing device applicable to the slender flexible member according to claim 1, characterized in that: The anti-icing device applicable to the slender flexible member further includes a power generation unit, the power generation unit being arranged on the energy storage member, and the power generation unit being capable of converting the deformation of the energy storage member into electric energy.

7. The anti-icing device applicable to the slender flexible member according to claim 1, characterized in that: The first connecting member is a plate member, and an arc surface, a stepped surface or a wavy curved surface is provided on the side of the first connecting member away from the energy storage member.

8. The anti-icing device applicable to the slender flexible member according to claim 1, characterized in that: The transmission assembly includes a gear and a rack, the rack being fixed to the slender flexible member, the gear being rotatably arranged on the second connecting member, and the gear being in a meshing state with the rack.

9. The anti-icing device applicable to an elongate flexible member according to claim 1, characterized in that: The end of the first connecting member is hinged to the mounting member through a fastening structure.

10. The anti-icing device applicable to an elongated flexible member according to claim 9, characterized in that: The fastening structure includes a first fastener and a second fastener, both ends of the first fastener being provided with connecting sections, and the connecting sections being capable of rotating to be perpendicular to the first fastener. Wherein, the first connecting member is provided with a through hole for the first fastener to pass through, and the mounting plate is provided with mounting holes for the connecting sections to pass through, and the connecting sections are threadedly connected to the second fastener after passing through the mounting holes.

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