High-pressure water mist anti-winding device of wind driven generator

Abstract

The invention relates to a high-pressure water mist anti-winding device for a wind driven generator, which comprises a tower drum and a cabin rotationally arranged at the top of the tower drum, and further comprises a fixed platform arranged in the tower drum, a ladder stand arranged below the cabin and rotating around the rotating center of the cabin, a power cable assembly and a high-pressure water mist pipeline assembly, the power cable assembly comprises a cable, and an upper fixing assembly, a supporting assembly and a lower fixing assembly which are used for fixing and supporting the cable and are sequentially arranged from top to bottom; the cable between the lower fixing assembly and the supporting assembly is naturally suspended in a U shape. The high-pressure water mist pipeline assembly comprises an automatic pipe winding winch, a fixed winch and a high-pressure rubber hose, a cable vertically penetrates through the center of the fixed winch, one end of the high-pressure rubber hose extends out of the fixed winch and extends into the cabin, and the other end of the high-pressure rubber hose extends out of the automatic pipe winding winch and extends downwards along the inner wall of the tower drum. Motion tracks of the high-pressure rubber hose and the power cable can be separated, and therefore the problem that short circuit is likely to be formed due to water and electricity contact is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fine water mist fire extinguishing, and in particular to a high-pressure fine water mist anti-winding device for a wind turbine generator. Background Art

[0002] During the operation of wind turbines, different wind speeds and directions have a huge impact on the rotation speed and force of their blades. Therefore, wind turbines need automatic yaw technology to ensure that they can automatically adjust the blade angle when affected by different wind speeds and directions, so that they always face the wind outlet, improve power generation efficiency and control stability. In short, during the power generation process, the nacelle needs to adjust the yaw according to the wind direction and then rotate to ensure that the wind turbine has a high wind energy utilization rate.

[0003] The nacelle is installed on the top of the tower and rotates around the tower. The cable leading out of the nacelle is placed downward at the center of the tower, and the cable extends along the center to the bottom of the tower. The cable can transmit the electric energy generated by the generator from the nacelle to the bottom of the tower and connect to related equipment. Therefore, when the nacelle rotates, it will drive the cable naturally suspended in the center of the tower to passively rotate.

[0004] Due to the yaw movement of the cabin, the cables at the yaw position of the cabin also need to rotate, twist, shake and swing with the cabin. In order to ensure the rotation angle, the cables generally adopt a natural hanging method so that the cables can meet a certain degree of twisting. Generally, after the yaw twisting angle is three weeks, the cabin needs to stop rotating and untie the cables in the opposite direction.

[0005] There are many types of combustibles in the cabin of a wind turbine generator set, and the fire load density is high. If a fire occurs, it is easy to cause great economic losses. The operating area of ​​the wind turbine generator set is more than 60 meters above the ground, and it is unmanned, making rescue difficult. At present, the wind turbine cabin is generally equipped with an aerosol or ultra-fine dry powder automatic fire extinguishing device, which is placed in the top cabin. Due to the limited space in the cabin, there is very little space left for the fire extinguishing device, so the fire extinguishing dose is very small. Once a fire occurs in the cabin, it is difficult to effectively extinguish the fire.

[0006] In view of the current situation of fire extinguishing in the cabin of a wind turbine generator, Patent Publication No. CN215608920U discloses a high-pressure fine water mist fire extinguishing device for a wind turbine generator cabin, which adopts high-pressure fine water mist fire extinguishing technology to improve the fire safety of wind turbine generator sets. A water supply main unit and a water tank are arranged at the bottom of the tower, and a spray pipeline is arranged in the cabin. The spray pipeline and the water supply main unit are connected through a pipeline. The pipeline is a segmented structure, including an upper through pipe and a lower through pipe. The upper through pipe and the lower through pipe are connected through a rotary joint, and the rotary joint is arranged at the connection between the tower and the cabin. The lower through pipe is hereinafter referred to as the liquid pipeline.

[0007] However, in actual use, the rotary joint can only ensure that the liquid pipeline itself does not twist. Since the power cable and the liquid pipeline have only one rotation center, when the cabin twists more than half a circle, the power cable and the liquid pipeline will be entangled together like twisting a rope, and can be twisted up to 2.5 circles. The twisting and entanglement between the power cables will affect the heat dissipation. When the cables are twisted, shaken, and swung, they will produce friction and collision with other auxiliary facilities in the tower, and the cables will be worn. At the same time, the power cables and liquid pipelines are entangled for a long time and are prone to water leakage. The insulation layer of the power cable is easily damaged, and water and electricity contact easily form a short circuit. Therefore, it is necessary to invent a high-pressure fine water mist anti-entanglement device for wind turbines, which can effectively avoid the entanglement between liquid pipelines and cables. Summary of the invention

[0008] In order to solve the problem that the fan cable and the liquid pipeline are located at the same rotation center and the cable is easily entangled with the liquid pipeline when rotating, the present invention provides a high-pressure fine water mist anti-entanglement device for a wind turbine, which ensures that the cable basically has no swing when rotating, avoids friction with auxiliary facilities in the tower, and at the same time the cable can meet a certain degree of torsion without being damaged; the rotation trajectories of the cable and the liquid pipeline are separated, the liquid pipeline and the cable do not interfere with each other, and keep a distance from each other, thereby solving the problem of water and electricity contact.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: A high-pressure fine water mist anti-entanglement device for a wind turbine generator comprises a tower and a nacelle rotatably arranged on the top of the tower, a high-pressure pump group and an electric control cabinet are arranged at the bottom of the tower, a generator and a spray pipeline are arranged in the nacelle, the electricity generated by the generator is transmitted to the electric control cabinet, the high-pressure pump group is used to supply water to the spray pipeline, and the device also comprises a fixed platform coaxially arranged in the tower, a ladder arranged below the nacelle and rotating around the rotation center of the nacelle, a power cable assembly and a high-pressure fine water mist pipeline assembly; the power cable assembly realizes the transmission of electricity, and the high-pressure fine water mist pipeline assembly realizes the transmission of liquid; The ladder is arranged at intervals above the fixed platform, the power cable assembly includes a cable and an upper fixing assembly, a supporting assembly and a lower fixing assembly arranged in sequence from top to bottom for fixing and supporting the cable, the upper fixing assembly is arranged at the rotation center of the cabin, the supporting assembly is arranged on one side of the ladder and corresponds to the upper fixing assembly, and the lower fixing assembly is arranged on the side wall of the tower; The cable is led out from the cabin, bypasses the upper fixed component, then goes down through the support component, passes through the center of the fixed platform, and finally bypasses the lower fixed component to extend to the ground. The cable between the lower fixed component and the support component is naturally suspended in a U shape. A separation component is also provided on the cable located at the center of the tower. The separation component is arranged below the support component to facilitate uniform separation of the cables. The high-pressure fine water mist pipeline assembly includes an automatic hose reel winch, a fixed winch and a high-pressure hose. The automatic hose reel winch is arranged above the fixed platform, the fixed winch is arranged below the ladder and corresponds to the support assembly up and down, the cable vertically passes through the center of the fixed winch, the high-pressure hose is wound between the fixed winch and the automatic hose reel winch, one end of the high-pressure hose extends out of the fixed winch upward along the ladder into the cabin, and the other end of the high-pressure hose extends out of the automatic hose reel winch through the fixed platform and extends downward along the inner wall of the tower.

[0010] Furthermore, the fixed platform is a circular ring structure, and the edge of the fixed platform is connected and fixed to the inner wall of the tower, which is convenient for the installation and fixation of the fixed platform. The vertical height of the fixed platform from the cabin is 2 to 3 meters. An anti-wear sheath is arranged in the center of the fixed platform. The cable passes through the fixed platform through the anti-wear sheath to avoid direct contact between the cable and the fixed platform; the ladder is arranged vertically, the upper end of the ladder extends into the cabin, and the lower end of the ladder is at a certain distance from the fixed platform.

[0011] Furthermore, the upper fixing component includes a semi-I-shaped wheel and an upper pressure plate detachably arranged on the semi-I-shaped wheel, and the semi-I-shaped wheel and the upper pressure plate cooperate to clamp the cable, thereby conveniently fixing the upper part of the cable; the lower fixing component includes an I-shaped wheel and a lower pressure plate detachably arranged on the I-shaped wheel, and the I-shaped wheel and the lower pressure plate cooperate to clamp the cable, thereby conveniently fixing the lower part of the cable.

[0012] Furthermore, the support assembly includes a positive support frame and a support circular sleeve with a large connecting flange. The large connecting flange and the anti-wear sleeve are coaxially arranged up and down. The large connecting flange is bolted to the support circular sleeve, which facilitates the disassembly and assembly of the support circular sleeve. The support circular sleeve includes an outer circular sleeve, an inner circular sleeve, a heat dissipation hole and a cable hole.

[0013] Furthermore, the outer circular sleeve is a two-petal structure, and the two sides of the outer circular sleeve are bolted together to form a circular ring, and the inner circular sleeve is coaxially arranged inside the outer circular sleeve. The outer circular sleeve and the inner circular sleeve are respectively provided with a plurality of heat dissipation holes to facilitate the heat dissipation of the cable, and the inner wall of the outer circular sleeve and the outer wall of the inner circular sleeve are respectively provided with cable holes to facilitate clamping the cable. The cable holes are arranged axially along the outer circular sleeve, and there are multiple cables. A cable is passed between the corresponding cable holes of the outer circular sleeve and the inner circular sleeve, and the outer circular sleeve and the inner circular sleeve cooperate to clamp the cable to achieve cable fixation and uniform separation.

[0014] Furthermore, the number of the partition components is at least two, the partition component structure is the same as the supporting circular sleeve structure, and one partition component is arranged at the center of the fixed platform; the length of the U-shaped wound cable is 7 to 10 meters, and the U-shaped wound cable rotates and swings in the tower, which facilitates the cable to twist to a certain extent.

[0015] Furthermore, an inverted support frame is provided on one side below the ladder, and the ladder is connected to a fixed winch through the inverted support frame. The inverted support frame and the fixed winch are bolted together, and the fixed winch is an I-shaped wheel structure. The axis of the fixed winch is consistent with the axis of the fixed platform. The fixed winch is at a certain distance from the fixed platform, and the axial direction of the automatic hose reel winch is perpendicular to the axial direction of the fixed winch.

[0016] Furthermore, the high-pressure hose comprises an upper pipe section, a lower pipe section and a middle pipe section which are independent of each other. The three pipe sections are interconnected. The middle pipe section is a hose which can be bent and wound. The middle pipe section is arranged between the fixed capstan and the automatic hose reel capstan. The two ends of the middle pipe section are respectively wound around the fixed capstan and the automatic hose reel capstan. An eccentric hole is provided on the fixed platform, and the lower pipe section is arranged along the inner wall of the tower. The lower pipe section passes upward through the eccentric hole and is connected to the automatic pipe reel winch, and is connected to one end of the middle pipe section; the upper pipe section is arranged along the ladder, and the upper pipe section extends upward into the cabin, and extends downward to the fixed winch, and is connected to the other end of the middle pipe section.

[0017] Furthermore, a guide mechanism is also provided on the fixed winch, and the high-pressure hose passes through the guide mechanism and is evenly wound on the fixed winch; The guide mechanism includes a screw lifting unit and a slider controlled by the screw lifting unit, the screw lifting unit is arranged vertically, the slider moves up and down along the axis of the fixed winch, a sliding hole is opened on one side of the slider, and the high-pressure hose is passed through the sliding hole; An angle sensor for monitoring the rotation angle of the cabin is also provided in the cabin. The angle sensor is connected to the yaw gear in the cabin, and the angle sensor is electrically connected to the screw lifting unit.

[0018] Through the above technical solution, the beneficial effects of the present invention are: The function achieved by the power cable assembly of the present invention is: when the cabin rotates, the fixed platform and the power cable on the fixed platform can only rotate around the center of the cabin with basically no swing, and there is no friction with the fixed platform. After the cable passes downward through the fixed platform, it is arranged in a U-shaped natural suspension manner. The length of the U-shaped cable is 7-10 meters, which enables the cable to meet a certain degree of torsion, and can rotate left and right up to 5 times without damage.

[0019] The power cable of the present invention is clamped and fixed by an upper fixing assembly, a support assembly, and a lower fixing assembly, which can effectively prevent the power cable from sliding down. The upper part of the power cable is fixed to the cabin through the upper fixing assembly and connected to the wind turbine in the cabin; the middle part of the power cable is fixed to the ladder through the support assembly, and the support assembly is designed to be concentric with the cabin rotation center to prevent the power cable from swinging eccentrically when the cabin rotates; the lower part of the power cable is fixed to the tower through the lower fixing assembly, and connected to the ground electric control cabinet along the tower to transmit the generated electricity.

[0020] The ladder of the present invention is fixed on the cabin and can rotate with the cabin. The large connection flange on one side of the ladder is concentric with the rotation center of the cabin. The support assembly is fixed to the large connection flange on the ladder by bolts. The power cable can only rotate in the center hole of the fixed platform when rotating with the cabin. There is a power cable anti-wear sheath at the center hole of the platform. At the same time, there is a separation assembly on the cable at this location, which avoids the power cable from being scattered and ensures that the cable will not rub against the fixed platform.

[0021] The supporting assembly of the present invention has a plurality of separated cable holes for the cables to pass through and separate each power cable, and the cables are tightened by the outer and inner sleeves. The supporting assembly has a plurality of heat dissipation holes to ensure the heat dissipation effect of the cables. The cable holes and heat dissipation holes on the supporting assembly and the separating assembly can effectively solve the heating problem of the power cables and avoid the entanglement and friction between the cables.

[0022] The function of the high-pressure water mist pipeline assembly of the present invention is: when the cabin rotates, the power cable rotates at the center of the fixed winch, the high-pressure hose is radially wound on the fixed winch, the high-pressure hose and the power cable are separated in motion trajectory, and the high-pressure hose and the power cable do not interfere with each other. When the high-pressure hose is wound, the guide mechanism can ensure that the high-pressure hose is always wound on the fixed winch in an orderly manner, and the high-pressure hoses on the fixed winch and the automatic retracting winch are always in a tensioned state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of a high-pressure fine water mist anti-winding device for a wind turbine generator, in which the cabin and the tower are in cross-section.

[0024] Figure 2 The present invention is a schematic diagram of a power cable assembly of a high-pressure fine water mist anti-entanglement device for a wind turbine generator.

[0025] Figure 3 It is a schematic diagram of a ladder of a high-pressure fine water mist anti-winding device for a wind turbine generator according to the present invention.

[0026] Figure 4 It is a schematic diagram of an upper fixing component of a high-pressure fine water mist anti-winding device for a wind turbine generator according to the present invention.

[0027] Figure 5 It is a schematic diagram of a supporting circular sleeve of a high-pressure fine water mist anti-winding device for a wind turbine generator according to the present invention.

[0028] Figure 6 The present invention is a schematic diagram of an outer circular sleeve of one petal of a high-pressure fine water mist anti-winding device for a wind turbine generator.

[0029] Figure 7The invention discloses a schematic diagram of an inner sleeve of a high-pressure fine water mist anti-winding device for a wind turbine generator.

[0030] Figure 8 The present invention is a schematic diagram of a high-pressure fine water mist assembly of a high-pressure fine water mist anti-winding device for a wind turbine generator.

[0031] Fig. 9 It is a schematic diagram of a fixed winch of a high-pressure fine water mist anti-winding device for a wind turbine generator according to the present invention.

[0032] Fig.10 It is a schematic diagram of a guide mechanism of a high-pressure fine water mist anti-winding device for a wind turbine generator according to the present invention.

[0033] The numbers in the attached drawings are: 1 tower, 2 cabin, 3 ladder, 301 large connecting flange, 302 positive support frame, 4 fixed platform, 5 high-pressure fine water mist pipeline assembly, 6 power cable assembly, 7 angle sensor, 8 side plate, 9 eccentric hole, 10 cable, 11 upper fixing component, 1101 upper pressure plate, 1102 semi-I-shaped wheel, 12 support component, 121 support circular sleeve, 1201 outer circular sleeve, 1201A cable hole, 1201B heat dissipation hole, 1201C side connecting flange, 1201D boss, 1201E bottom connecting flange , 1202 inner sleeve, 13 anti-wear sleeve, 14 partition assembly, 15 lower fixing assembly, 151 I-shaped wheel, 152 lower pressure plate, 16 high-pressure hose, 161 upper pipe section, 162 lower pipe section, 163 middle pipe section, 17 automatic pipe winding capstan, 18 fixed capstan, 19 guide mechanism, 191 screw lifting unit, 1901 motor, 1902 screw, 1903 light rod, 1904 slider, 1905 rotating guide roller, 20 inverted support frame, 21 anti-collision rubber ring, 22 pipe clamp, 23 sliding hole, 24 guide frame, 241 guide port. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings: like Figure 1 to Figure 10 As shown, a high-pressure water mist anti-entanglement device for a wind turbine includes a tower 1 and a nacelle 2 rotatably arranged on the top of the tower 1. This is a conventional facility for wind turbines, and the center of the tower 1 is consistent with the rotation center of the nacelle 2. The anti-entanglement device also includes a fixed platform 4 coaxially arranged in the tower 1, a ladder 3 arranged below the nacelle 2 and rotating around the rotation center of the nacelle 2, a power cable assembly 6, and a high-pressure water mist pipeline assembly 5. The power cable assembly 6 rotates at the center of the nacelle 2, and the high-pressure water mist pipeline assembly 5 is radially wound around the outside of the power cable assembly 6, as shown in FIG. Figure 1 shown.

[0035] The fixed platform 4 is a circular ring structure, with a hole in the center of the fixed platform 4, the hole is located in the center of the tower 1, and the edge of the fixed platform 4 is connected and fixed to the inner wall of the tower 1, so that the fixed platform 4 is installed in the tower 1. The vertical height of the fixed platform 4 from the nacelle 2 is 2 to 3 meters.

[0036] Ladders 3 are arranged at intervals above the fixed platform 4. Ladders 3 are arranged vertically. Ladders 3 are welded from square tubes. Ladders 3 are fixed straight ladder structures. There are steps for people to climb on the front of ladders 3. Ladders 3 are connected and fixed to the cabin 2. When the cabin 2 rotates, it drives ladders 3 to rotate around the center of tower 1. The upper end of ladders 3 extends into the cabin 2. Through ladders 3, workers can go up and down between cabin 2 and fixed platform 4 conveniently. The lower end of ladders 3 is a certain distance from fixed platform 4, where the distance is 0.4 meters, so ladders 3 are not connected to fixed platform 4, and fixed platform 4 will not interfere with the rotation of ladders 3.

[0037] The power cable assembly 6 is used to transmit the electricity generated by the generator to the relevant equipment at the bottom of the tower 1. The power cable assembly 6 includes a cable 10 and an upper fixing assembly 11, a supporting assembly 12 and a lower fixing assembly 15 for fixing and supporting the cable 10. There are multiple cables 10, and the multiple cables 10 are arranged together. The upper fixing assembly 11, the supporting assembly 12 and the lower fixing assembly 15 are arranged in sequence from top to bottom, as shown in FIG. Figure 2 shown.

[0038] The cable 10 is led out from the cabin 2, bypasses the upper fixed component 11, and then goes downward through the support component 12, passes through the center of the fixed platform 4, and finally bypasses the lower fixed component 15 to extend to the ground. An anti-wear sheath 13 is provided at the center of the fixed platform 4, and the cable 10 passes through the fixed platform 4 through the anti-wear sheath 13 to avoid direct contact between the cable 10 and the fixed platform 4 and wear. The cable 10 between the lower fixed component 15 and the support component 12 is naturally suspended in a U shape. The length of the cable 10 wound in the U shape is 7 to 10 meters, and the cable 10 wound in the U shape can rotate and swing in the tower 1.

[0039] The upper fixing assembly 11 is used to clamp and fix the upper end of the cable 10 to achieve the connection between the cable 10 and the cabin 2. The upper fixing assembly 11 is arranged at the rotation center of the cabin 2. The upper fixing assembly 11 includes a semi-I-shaped wheel 1102 and an upper pressure plate 1101 detachably arranged on the semi-I-shaped wheel 1102. The semi-I-shaped wheel 1102 is the half of the entire I-shaped wheel cut along the axial section. Side plates 8 are arranged at both ends of the semi-I-shaped wheel 1102. The bottom surface of the side plate 8 is in an arc shape and is in contact with and fixed to the semi-I-shaped wheel 1102. The upper pressure plate 1101 is bolted between the side plates 8 at both ends. Then, the semi-I-shaped wheel 1102 and the upper pressure plate 1101 cooperate to clamp the cable 10 to achieve the fixation of the cable 10. Figure 4 shown.

[0040] A rubber pad is arranged on the lower surface of the upper pressing plate 1101 to realize the anti-wear function of the upper pressing plate 1101. The upper pressing plate 1101 contacts the cable 10 through the rubber pad to avoid wear of the cable 10. At the same time, the semi-I-shaped wheel 1102 and the upper pressing plate 1101 are connected and combined to form a rectangular space, and the cable 10 passes upward through the rectangular space and then extends into the cabin 2.

[0041] The lower fixing assembly 15 is used to clamp and fix the lower end of the cable 10 to achieve the connection between the cable 10 and the tower 1. The lower fixing assembly 15 is arranged on the side wall of the tower 1, and the clamping and fixing principle of the lower fixing assembly 15 is the same as that of the upper fixing assembly 11. The lower fixing assembly 15 includes an I-shaped wheel 151 and a lower pressing plate 152 detachably arranged on the I-shaped wheel 151. The I-shaped wheel 151 and the lower pressing plate 152 cooperate to clamp the cable 10 to achieve the fixation of the cable 10.

[0042] The support assembly 12 is used to evenly separate the multiple cables 10 on one hand, and can drive the cables 10 to rotate on the other hand. The support assembly 12 is arranged on one side of the ladder 3, and the rotation of the ladder 3 drives the support assembly 12 to operate. The support assembly 12 corresponds to the upper fixed assembly 11, and then the support assembly 12 is located at the center of the tower 1 and operates. Figure 3 shown.

[0043] The support assembly 12 includes a positive support frame 302 with a large connecting flange 301 and a supporting sleeve 121. The positive support frame 302 is a triangular support. The large connecting flange 301 on the positive support frame 302 and the anti-wear sleeve 13 are arranged coaxially up and down. The large connecting flange 301 is bolted to the supporting sleeve 121, and the supporting sleeve 121 includes an outer sleeve 1201, an inner sleeve 1202, a heat dissipation hole 1201B and a cable hole 1201A. Figure 5 shown.

[0044] The outer sleeve 1201 is a two-petal structure, each petal of the outer sleeve 1201 is semicircular, and the two sides of the outer sleeve 1201 are bolted together to form a ring, that is, the joints of the two sides of the outer sleeve 1201 are provided with side connection flanges 1201C, and the corresponding side connection flanges 1201C are bolted together. The outer ring of the bottom of the outer sleeve 1201 is provided with a bottom connection flange 1201E, and the outer sleeve 1201 is connected to the large connection flange 301 through the bottom connection flange 1201E, such as Figure 6 shown.

[0045] The outer sleeve 1201 and the inner sleeve 1202 are made of plastic material. The inner sleeve 1202 is coaxially arranged inside the outer sleeve 1201. The inner sleeve 1202 is a circular ring structure. Figure 7As shown. In order to realize the installation of the inner sleeve 1202, a boss 1201D is set on the inner circle of the bottom of the outer sleeve 1201, and the boss 1201D and the bottom connecting flange 1201E are located on the same plane. The boss 1201D can support the inner sleeve 1202 to prevent the inner sleeve 1202 from moving axially downward. The inner sleeve 1202 and the outer sleeve 1201 are connected and combined to form an inner-outer-outer ring sleeve structure.

[0046] A plurality of heat dissipation holes 1201B are respectively formed on the outer sleeve 1201 and the inner sleeve 1202 . The heat dissipation holes 1201B are arranged along the radial direction of the outer sleeve 1201 and the inner sleeve 1202 . The heat dissipation holes 1201B are used for heat dissipation of the cable 10 . The inner circular sleeve 1202 and the outer circular sleeve 1201 can be used to clamp the cable 10. Specifically, the inner wall of the outer circular sleeve 1201 and the outer wall of the inner circular sleeve 1202 are respectively provided with cable holes 1201A. The number of the cable holes 1201A is evenly distributed in a ring. The cable holes 1201A are semicircular holes. The cable holes 1201A are arranged axially along the outer circular sleeve 1201. The cable holes 1201A corresponding to the outer circular sleeve 1201 and the inner circular sleeve 1202 are combined into a circular hole. A cable 10 is passed between the cable holes 1201A corresponding to the outer circular sleeve 1201 and the inner circular sleeve 1202. The multiple cable holes 1201A can ensure the uniform arrangement of multiple cables 10. The outer circular sleeve 1201 and the inner circular sleeve 1202 cooperate to clamp the cable 10, thereby achieving the fixation of the cable 10.

[0047] In this way, the nacelle 2 is connected to the fixed cable 10 through the upper fixing assembly 11, and is also connected to the fixed cable 10 through the support assembly 12, and the upper fixing assembly 11 and the support assembly 12 are arranged vertically at the center of the tower 1. In this way, when the nacelle 2 rotates, it can stably drive the cable 10 to rotate around the center of the tower 1.

[0048] Since the cables 10 naturally hang down in the tower 1, in order to avoid mutual interference between the cables 10, on the basis of the separation function of the support assembly 12, a separation assembly 14 is also provided on the cable 10 located at the center of the tower 1. The separation assembly 14 is arranged below the support assembly 12. There are at least two separation assemblies 14. The structure of the separation assembly 14 is the same as that of the support sleeve 121. Both achieve separation of the cables 10 through the cooperation of the outer sleeve 1201 and the inner sleeve 1202. One of the separation assemblies 14 is arranged at the center of the fixed platform 4. The cable 10 contacts the anti-wear sheath 13 through the separation assembly 14, which effectively avoids the wear of the cable 10.

[0049] The high-pressure water mist pipeline assembly 5 is used to transport fire-fighting water from the bottom of the tower 1 to the cabin 2. At the same time, the high-pressure water mist pipeline assembly 5 can prevent the cabin 2 from being entangled by the cable 10 when the cable 10 is driven to rotate. The high-pressure water mist pipeline assembly 5 includes an automatic hose reel 17, a fixed winch 18 and a high-pressure hose 16. Figure 8 shown.

[0050] The automatic hose reel winch 17 is arranged above the fixed platform 4 and is not located at the center of the fixed platform 4. The automatic hose reel winch 17 is also called an automatic hose reel. The fixed winch 18 is arranged below the ladder 3. The fixed winch 18 is an I-shaped wheel 151 structure. When the fixed winch 18 is installed, an inverted support frame 20 is arranged on one side below the ladder 3. The inverted support frame 20 is a triangular support. The positive support frame 302 and the inverted support frame 20 are arranged correspondingly up and down. The ladder 3 is connected to the fixed winch 18 through the inverted support frame 20. There is a gap between the fixed winch 18 and the fixed platform 4 up and down.

[0051] The fixed winch 18 and the support assembly 12 correspond to each other up and down, so that the axis of the fixed winch 18 is consistent with the axis of the fixed platform 4, the axial direction of the automatic hose reel winch 17 is perpendicular to the axial direction of the fixed winch 18, and the fixed winch 18 is located at the center of the tower 1. The cable 10 passes through the center of the fixed winch 18 vertically downward from the support assembly 12. An anti-collision rubber ring 21 is set at the center of the fixed winch 18 to prevent the cable 10 from contacting the fixed winch 18. The high-pressure hose 16 is wound between the fixed winch 18 and the automatic hose reel winch 17. One end of the high-pressure hose 16 extends out of the fixed winch 18 and extends upward along the ladder 3 into the cabin 2. The other end of the high-pressure hose 16 extends out of the automatic hose reel winch 17 and passes through the fixed platform 4 and extends downward along the inner wall of the tower 1. When the cabin 2 rotates, the cable 10 and the high-pressure hose 16 can be prevented from interfering with each other.

[0052] Specifically, the high-pressure hose 16 includes an upper pipe section 161, a lower pipe section 162 and a middle pipe section 163, respectively. The middle pipe section 163 is a hose, which is arranged between the fixed winch 18 and the automatic hose reel winch 17. The two ends of the middle pipe section 163 are respectively wound around the fixed winch 18 and the automatic hose reel winch 17, and the middle pipe section 163 can automatically shrink. An eccentric hole 9 is opened on the fixed platform 4, and the lower pipe section 162 is arranged vertically along the inner wall of the tower 1. The lower pipe section 162 is downwardly connected to the high-pressure pump group at the bottom of the tower 1, and the lower pipe section 162 passes through the eccentric hole 9 upwardly and is connected to the automatic hose reel winch 17, and is connected to one end of the middle pipe section 163. The upper pipe section 161 is arranged along the ladder 3, and the upper pipe section 161 extends upward to the cabin 2 and is connected to the spray pipeline in the cabin 2. The upper pipe section 161 extends downward to the fixed winch 18 and is connected to the other end of the middle pipe section 163. The lower part of the upper pipe section 161 is connected and fixed to the inverted support frame 20 through the pipe clamp 22. Fig. 9 shown.

[0053] The high-pressure water mist pipeline assembly 5 is in operation: when the wind direction changes and the cabin 2 needs to rotate clockwise, the power cable 10 rotates clockwise at the center of the fixed winch 18, and the high-pressure hose 16 wound on the fixed winch 18 is loosened and radially rotated out. Since there is a disc spring in the automatic hose reel winch 17, the rotated high-pressure hose 16 is put into the automatic hose reel winch 17. When the wind direction changes and the cabin 2 needs to rotate counterclockwise, the power cable 10 rotates counterclockwise at the center of the fixed winch 18, and the high-pressure hose 16 wound on the fixed winch 18 is tightened and radially rotated in, and the rotated high-pressure hose 16 is passively pulled out from the automatic hose reel winch 17.

[0054] The principle of the present invention is as follows: the cable 10 is arranged at the center of the tower 1. When the nacelle 2 drives the cable 10 to rotate, part of the cable 10 is wound in a U shape, and the winding length is 7-10 meters, so that the cable 10 can meet a certain degree of torsion without being damaged, thereby ensuring the normal operation of the nacelle 2. The cable 10 passes vertically through the center of the fixed winch 18, and the high-pressure hose 16 coming out of the automatic hose reel winch 17 is radially wound on the fixed winch 18, thereby separating the high-pressure hose 16 from the cable 10, and the retraction and release of the high-pressure hose 16 and the torsional motion trajectory of the cable 10 do not interfere with each other, so that the entanglement of the power cable 10 and the high-pressure hose 16 can be avoided.

[0055] In order to ensure that the high-pressure hose 16 is wound on the fixed capstan 18 in an orderly manner when the high-pressure hose 16 is radially wound on the fixed capstan 18, a guide mechanism 19 is installed on the fixed capstan 18. Specifically, the fixed capstan 18 is also provided with a guide mechanism 19, which is arranged along the axial direction of the fixed capstan 18. The guide mechanism 19 can ensure the uniformity of the winding of the high-pressure hose 16 on the fixed capstan 18, such as Fig.10 shown.

[0056] The high-pressure hose 16 is evenly wound on the fixed capstan 18 after passing through the guide mechanism 19. The guide mechanism 19 includes a screw lifting unit 191 and a slider 1904 controlled by the screw lifting unit 191. The screw lifting unit 191 is arranged vertically, and the screw lifting unit 191 includes a motor 1901, a screw 1902 and a light rod 1903. The motor 1901 can operate in both directions. The screw 1902 is arranged on the output shaft of the motor 1901. The screw 1902 is rotatably arranged on the fixed capstan 18. The light rod 1903 is arranged in parallel on one side of the screw 1902, and the light rod 1903 is connected and fixed to the fixed capstan 18.

[0057] A slider 1904 is arranged between the screw rod 1902 and the light rod 1903. The slider 1904 and the light rod 1903 are slidably connected. The slider 1904 and the screw rod 1902 are threadedly connected, so that the slider 1904 can move up and down along the axis of the fixed capstan 18. A sliding hole 23 is opened on one side of the slider 1904. The high-pressure rubber hose 16 is inserted into the sliding hole 23 and then wound on the fixed capstan 18. The up and down movement of the slider 1904 can make the middle pipe section 163 evenly arranged on the fixed capstan 18. The sliding hole 23 is a rectangular hole. Rotating guide rollers 1905 are arranged on all sides of the sliding hole 23 to improve the smoothness of the cable 10 passing through. At the same time, a guide frame with a guide port 241 is arranged on the automatic pipe reel capstan 17. Rotating guide rollers 1905 are also arranged on all sides of the guide port 241. The middle pipe section 163 extends out of the automatic pipe reel capstan 17 through the guide port 241.

[0058] An angle sensor 7 for monitoring the rotation angle of the cabin 2 is also provided in the cabin 2. The angle sensor 7 is connected to the yaw gear in the cabin 2. The angle sensor 7 is electrically connected to the screw lifting unit 191. The operation of the screw lifting unit 191 is controlled by the signal of the angle sensor 7. The yaw function of the cabin 2 is to align with the wind direction. The yaw principle is as follows: an outer gear ring is provided on the top of the tower 1, and four yaw motors are evenly distributed in the cabin 2 in an annular direction. The yaw motors are all meshed with the outer gear ring. The four yaw motors run at the same time, which can drive the cabin to rotate around the center of the tower. This is the prior art. The angle sensor 7 uses a rotary encoder. The input shaft of the angle sensor 7 is meshed with the outer gear ring. When the cabin 2 drives the angle sensor 7 to move, the input shaft of the angle sensor 7 rotates and generates an angle signal.

[0059] During the rotation of the nacelle 2 around the tower 1, the angle sensor 7 records the rotation angle of the nacelle 2. The angle sensor 7 on the outside of the yaw gear ring transmits the yaw angle change parameter to the motor 1901 of the guide mechanism 19, thereby controlling the movement of the slider 1904. When the nacelle 2 starts to rotate, it drives the fixed winch 18 to rotate, and then the middle pipe section 163 of the high-pressure hose 16 can be wound or released. During the movement of the middle pipe section 163, the angle sensor 7 senses the change in the rotation angle of the nacelle 2, and then controls the movement of the screw lifting unit 191, and starts to drive the middle pipe section 163 to move up and down, ensuring that the middle pipe section 163 is evenly wound or released.

[0060] The present invention adopts high-pressure fine water mist technology with a pressure of ≥10MPa. The fire extinguishing agent can be easily transported to the top cabin through a high-pressure pump group; the pump group and the water tank are arranged on the ground of the tower, and the fire extinguishing agent is transported to the cabin 2 through a pipeline, without occupying the limited space of the cabin 2. When the wind direction changes and the cabin 2 needs to rotate, the power cable 10 can only rotate around the center of the cabin 2, with basically no swing and no friction with the fixed platform 4. After the power cable 10 passes through the platform downward, the cable 10 is a U-shaped structure, so the cable 10 can meet a certain degree of torsion without damage. When the cabin 2 rotates, the power cable 10 rotates at the center of the fixed winch 18, and the high-pressure hose 16 is radially wound on the fixed winch 18. The high-pressure hose 16 and the power cable 10 are separated by their movement trajectories, and the high-pressure hose 16 and the power cable 10 do not interfere with each other, thereby solving the problem of water and electricity contact easily forming a short circuit.

[0061] Compared with the existing technology, the present invention is novel, unique, simple and reasonable. It adopts high-pressure fine water mist technology and has many advantages such as less water consumption, safety and environmental protection, efficient fire extinguishing, smoke purification, and heat radiation shielding. It can effectively solve the problems of power cable wear, sliding, heating, etc., and can also solve the problem of short circuit caused by water and electricity contact. It is an innovation in the field of wind turbine cabin fire protection and has good application prospects.

[0062] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A high-pressure water mist anti-entanglement device for a wind turbine, comprising a tower (1) and a nacelle (2) rotatably arranged on the top of the tower (1), characterized in that: It also includes a fixed platform (4) coaxially arranged in the tower (1), a ladder (3) arranged below the cabin (2) and rotating around the rotation center of the cabin (2), a power cable assembly (6) and a high-pressure fine water mist pipeline assembly (5); The ladders (3) are arranged at intervals above the fixed platform (4); the power cable assembly (6) comprises a cable (10) and an upper fixing assembly (11), a supporting assembly (12) and a lower fixing assembly (15) arranged in sequence from top to bottom for fixing and supporting the cable (10); the upper fixing assembly (11) is arranged at the rotation center of the cabin (2); the supporting assembly (12) is arranged on one side of the ladder (3) and corresponds to the upper fixing assembly (11); and the lower fixing assembly (15) is arranged on the side wall of the tower (1); The cable (10) is led out from the cabin (2), bypasses the upper fixed component (11), then goes downward through the support component (12), passes through the center of the fixed platform (4), and finally bypasses the lower fixed component (15) to extend to the ground. The cable (10) between the lower fixed component (15) and the support component (12) is naturally suspended in a U shape. A partition component (14) is also provided on the cable (10) located at the center of the tower (1). The partition component (14) is arranged below the support component (12); The high-pressure fine water mist pipeline assembly (5) comprises an automatic hose reel winch (17), a fixed winch (18) and a high-pressure rubber hose (16); the automatic hose reel winch (17) is arranged above the fixed platform (4); the fixed winch (18) is arranged below the ladder (3) and corresponds to the support assembly (12) in the upper and lower directions; the cable (10) vertically passes through the center of the fixed winch (18); the high-pressure rubber hose (16) is wound between the fixed winch (18) and the automatic hose reel winch (17); one end of the high-pressure rubber hose (16) extends out of the fixed winch (18) and extends upward along the ladder (3) into the cabin (2); the other end of the high-pressure rubber hose (16) extends out of the automatic hose reel winch (17), passes through the fixed platform (4) and extends downward along the inner wall of the tower (1).

2. A wind turbine high pressure water mist anti-winding device according to claim 1, characterized in that: The fixed platform (4) is a circular ring structure, the edge of the fixed platform (4) is connected and fixed to the inner wall of the tower (1), the vertical height of the fixed platform (4) from the cabin (2) is 2 to 3 meters, an anti-wear sheath (13) is provided at the center of the fixed platform (4), and the cable (10) passes through the fixed platform (4) through the anti-wear sheath (13); the ladder (3) is arranged vertically, the upper end of the ladder (3) extends into the cabin (2), and the lower end of the ladder (3) is a certain distance away from the fixed platform (4).

3. A wind turbine high pressure water mist anti-winding device according to claim 2, characterized in that: The upper fixing assembly (11) comprises a semi-I-shaped wheel (1102) and an upper pressure plate (1101) detachably arranged on the semi-I-shaped wheel (1102), wherein the semi-I-shaped wheel (1102) and the upper pressure plate (1101) cooperate to clamp the cable (10); the lower fixing assembly (15) comprises an I-shaped wheel (151) and a lower pressure plate (152) detachably arranged on the I-shaped wheel (151), wherein the I-shaped wheel (151) and the lower pressure plate (152) cooperate to clamp the cable (10).

4. A wind turbine high pressure water mist anti-winding device according to claim 2, characterized in that: The support assembly (12) comprises a positive support frame (302) with a large connecting flange (301) and a supporting circular sleeve (121); the large connecting flange (301) and the anti-wear sleeve (13) are coaxially arranged up and down; the large connecting flange (301) is bolted to the supporting circular sleeve (121); the supporting circular sleeve (121) comprises an outer circular sleeve (1201), an inner circular sleeve (1202), a heat dissipation hole (1201B) and a cable hole (1201A).

5. A wind turbine high pressure water mist anti-winding device according to claim 4, characterized in that: The outer circular sleeve (1201) is a two-petal structure. The two sides of the outer circular sleeve (1201) are bolted together to form a ring shape. The inner circular sleeve (1202) is coaxially arranged inside the outer circular sleeve (1201). The outer circular sleeve (1201) and the inner circular sleeve (1202) are respectively provided with a plurality of heat dissipation holes (1201B). The inner wall of the outer circular sleeve (1201) and the outer wall of the inner circular sleeve (1202) are respectively provided with cable holes (1201A). The cable holes (1201A) are arranged axially along the outer circular sleeve (1201). There are a plurality of cables (10). A cable (10) is passed between the corresponding cable holes (1201A) of the outer circular sleeve (1201) and the inner circular sleeve (1202). The outer circular sleeve (1201) and the inner circular sleeve (1202) cooperate to clamp the cable (10).

6. A wind turbine high pressure water mist anti-winding device according to claim 5, characterized in that: The number of the partition components (14) is at least two, the structure of the partition components (14) is the same as the structure of the supporting circular sleeve (121), and one partition component (14) is arranged at the center of the fixed platform (4); the length of the cable (10) wound in a U-shape is 7 to 10 meters, and the cable (10) wound in a U-shape rotates and swings in the tower (1).

7. A wind turbine high pressure water mist anti-winding device according to claim 2, characterized in that: An inverted support frame (20) is provided on one side below the ladder (3), and the ladder (3) is connected to a fixed winch (18) via the inverted support frame (20). The fixed winch (18) is an I-shaped wheel (151) structure, and the axis of the fixed winch (18) is consistent with the axis of the fixed platform (4). The fixed winch (18) is spaced a certain distance from the fixed platform (4), and the axis of the automatic hose reel winch (17) is perpendicular to the axis of the fixed winch (18).

8. A wind turbine high pressure water mist anti-winding device according to claim 7, characterized in that: The high-pressure rubber hose (16) comprises an upper pipe section (161), a lower pipe section (162) and a middle pipe section (163) which are independent of each other. The middle pipe section (163) is a hose. The middle pipe section (163) is arranged between a fixed capstan (18) and an automatic hose reeling capstan (17). Two ends of the middle pipe section (163) are respectively wound around the fixed capstan (18) and the automatic hose reeling capstan (17). An eccentric hole (9) is provided on the fixed platform (4); the lower pipe section (162) is arranged along the inner wall of the tower (1); the lower pipe section (162) passes upward through the eccentric hole (9) and is connected to the automatic pipe reel winch (17) and is in communication with one end of the middle pipe section (163); the upper pipe section (161) is arranged along the ladder (3); the upper pipe section (161) extends upward into the cabin (2); the upper pipe section (161) extends downward to the fixed winch (18) and is in communication with the other end of the middle pipe section (163).

9. A wind turbine high pressure water mist anti-winding device according to claim 7, characterized in that: The fixed winch (18) is also provided with a guide mechanism (19), and the high-pressure rubber hose (16) passes through the guide mechanism (19) and is evenly wound around the fixed winch (18); The guide mechanism (19) comprises a screw lifting unit (191) and a slider (1904) controlled by the screw lifting unit (191); the screw lifting unit (191) is arranged vertically; the slider (1904) moves up and down along the axis of the fixed winch (18); a sliding hole (23) is provided on one side of the slider (1904); and the high-pressure rubber hose (16) is inserted into the sliding hole (23); An angle sensor (7) for monitoring the rotation angle of the cabin (2) is also provided in the cabin (2); the angle sensor (7) is connected to a yaw gear in the cabin (2); and the angle sensor (7) is electrically connected to the screw lifting unit (191).

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