Cable hoisting and laying device and method, wind turbine generator set

Abstract

The present invention relates to a cable hoisting and laying device and method, and a wind turbine generator set. The cable hoisting and laying device comprises a cable support frame for supporting cables, the cable support frame is fixed to a ladder inside a tower of the wind turbine generator set and is located on one side of the ladder in the radial direction of the tower. Through the cable hoisting and laying device, the cable can be hoisted and laid in the vertical direction as much as possible, avoiding the influence and restriction of the inclined side wall of the tower of the wind turbine generator set on the cable hoisting and laying.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and more specifically, to a cable hoisting and laying device and method, and a wind turbine generator set comprising the cable hoisting and laying device. Background Art

[0002] The fan captures wind energy through the impeller and converts it into mechanical energy, which drives the generator to generate electrical energy. The electrical energy generated by the generator is transmitted to the inverter side interface through the power cable.

[0003] like Figure 1 As shown in the figure, according to the specifications of the units in different projects, the number of power cables used is increasing. Usually, the power cables are mainly distributed on the tower wall on one or both sides of the ladder in the tower. Double-layer fixed laying or single-layer fixed laying is carried out through cable clamps, cable clamps or other ladder racks with similar functions. Figure 1 The top tower in the tower is a cone section, the middle and lower sections are straight sections, the mixed tower section in the mixed tower project is a cone section, and the upper steel tower is a mixture of straight sections and cone sections. Therefore, when the cable is laid and fixed on the inner wall of the tower, the cable hoisting and fixed laying will be restricted by the tilted tower, which will cause many inconveniences.

[0004] For example, when the power cables are designed to be distributed on the tower wall on one side or both sides of the ladder, when the power cables are fixed on one side of the ladder, the fixed position is far away from the ladder. For example, when there are many cables, the cables far away from the ladder may be difficult for construction workers to reach, which brings inconvenience to some on-site construction work. When the power cables are fixed on both sides of the ladder, the length of the power cable laying will be increased, which will increase the cost.

[0005] Due to the presence of conical sections in the tower, manual restraint is required when lifting the cable, or guide wheel devices need to be added at multiple locations other than the platform, which increases the construction time.

[0006] In addition, considering the location of the tower platform through-holes and the tower form requirements, most of the power cables are hoisted as a whole, and they can only be hung on designated devices and fixed and laid after most of the power cables have been hoisted.

[0007] In addition, when the power cable is partially hoisted, it is necessary to fix the power cable in a cable clamp or cable clip. Since the installation point of the hoisting equipment is fixed, the power cable can only be moved and placed in the designated cable clamp or cable clip, which is time-consuming and laborious. In addition, when hoisting the last part of the cable, there is a problem of insufficient hoisting space.

[0008] In addition, when fixing the cable to the side wall of the tower, it is necessary to weld a cable clamp assembly or a cable clamp plate assembly on the side wall of the tower to increase the welding points on the side wall of the tower and reduce the fatigue strength of the entire tower.

[0009] In addition, the saddle structure component used to connect the power cable of the twisted cable section of the wind turbine with the power cable of the straight section is fixed on the side wall of the tower. Since the top section of the tower is a conical section, it is necessary to adjust the matching of the saddle structure component and the side wall of the tower each time during design, which increases the difficulty of material management. Summary of the invention

[0010] The present invention aims to provide a cable hoisting and laying device and method to overcome the above-mentioned problems existing in the prior art.

[0011] According to one aspect of the present invention, a cable hoisting and laying device is provided, which includes a cable support frame for supporting cables. The cable support frame is fixed to a ladder inside a tower of a wind turbine generator set and is located on one side of the ladder in a radial direction of the tower.

[0012] Preferably, a plurality of cable fixing clamps for clamping and fixing the cables may be installed on the cable support frame, and the cable fixing clamps and the ladder may be spaced apart from each other by a predetermined distance in the radial direction of the tower.

[0013] Preferably, the cable support frame may include a plurality of support cross bars spaced apart in a vertical direction, and the cable fixing clip may be fixed to a portion of the support cross bars among the plurality of support cross bars.

[0014] Preferably, the cable support frame may be a cable fixing and laying ladder frame arranged side by side with the ladder, and the cable fixing and laying ladder frame may include two vertical rods extending in the vertical direction and a plurality of supporting cross bars arranged between the two vertical rods; or the cable support frame may be a plurality of supporting assemblies fixed to the ladder at intervals along the vertical direction of the ladder, and each supporting assembly may include two side panels fixed to the ladder and a supporting cross bar fixed between the two side panels.

[0015] Preferably, the guide wheel assembly for guiding the cable can be arranged on a part of the multiple support cross bars, and the guide wheel assembly can be spaced apart from the cable fixing clamp in the vertical direction, or the guide wheel assembly for guiding the cable can be arranged at a cable through hole of the platform inside the tower of the wind turbine for the cable to pass through.

[0016] Preferably, a portion of the guide wheel assembly may correspond in the vertical direction to a portion of the cable fixing clamps on each of the support cross bars, and another portion of the guide wheel assembly may correspond in the vertical direction to another portion of the cable fixing clamps on each of the support cross bars.

[0017] Preferably, the guide wheel assembly may include a frame for fixing to the supporting cross bar or the platform and an inner guide wheel and an outer guide wheel detachably fixed to the frame, and there may be a space between the inner guide wheel and the outer guide wheel for the cable to pass through.

[0018] Preferably, both ends of each of the inner guide wheel and the outer guide wheel can be placed in a groove opened in the side plate of the frame, and the guide wheel assembly can be provided with a detachable pressure plate for pressing the ends of the inner guide wheel and the outer guide wheel at the groove.

[0019] Preferably, the cable hoisting and laying device may include a movable cable hoisting device arranged above the cable supporting frame to hoist the cable.

[0020] Preferably, the cable hoisting and laying device may further include a hoisting support assembly, which may include two longitudinal beams fixed to the wall of the tower and a transverse beam arranged between the two longitudinal beams, and the cable hoisting device can move along the transverse beam.

[0021] Preferably, a torque-stop assembly constructed to support and restrain the twisted cable segment cable of the wind turbine generator set and a saddle assembly constructed to allow the twisted cable segment cable to rest thereon can be arranged on the lifting support assembly, and the torque-stop assembly and the saddle surface of the saddle assembly can be spaced apart in the radial direction and the vertical direction of the tower, respectively.

[0022] According to another aspect of the present invention, a wind turbine generator set is provided, and the wind turbine generator set comprises the above-mentioned cable hoisting and laying device.

[0023] Preferably, the tower of the wind turbine generator set may include a plurality of platforms spaced apart in the vertical direction, and each platform may be provided with a ladder through-hole for a ladder to pass through and a cable through-hole for a cable to pass through.

[0024] Preferably, the cable support frame may be fixed to the ladder via a first support member, and / or, the cable support frame may be fixed to the platform via a second support member.

[0025] According to another aspect of the present invention, a cable hoisting and laying method is provided, comprising: fixing a cable support frame to a ladder inside a tower of a wind turbine generator set and positioning the cable support frame on one side of the ladder in a radial direction of the tower; hoisting the cable in a vertical direction and fixing and laying the cable on the cable support frame.

[0026] Preferably, the cable support frame may include a plurality of support cross bars spaced apart in the vertical direction, and the cable hoisting and laying method may further include: installing a plurality of cable fixing clamps for clamping and fixing the cables on a portion of the plurality of support cross bars, and making the plurality of cable fixing clamps spaced apart from the ladder by a predetermined distance in the radial direction of the tower; hoisting the cables by means of a movable cable hoisting device arranged above the cable support frame, and changing the position of the cable hoisting device according to the fixed laying position of the cables to be hoisted.

[0027] Preferably, the cable hoisting device can be used to hoist one or more cables at a time.

[0028] Preferably, a plurality of guide wheel assemblies may be installed on the supporting cross bar or at cable passage holes of the platform inside the tower for cables to pass through, so that the lifting chain of the cable suspension device and the cable pass between the inner guide wheel and the outer guide wheel of the guide wheel assembly.

[0029] Preferably, after the cable is hoisted into place, the inner guide wheel or the outer guide wheel can be removed to take out the cable, and the cable can be fixed to the corresponding cable fixing clamp.

[0030] Preferably, a hoisting support assembly can be arranged above the cable support frame, and a torque-stop assembly for supporting and restraining the twisted cable segment cable of the wind turbine generator set and a saddle assembly for supporting the twisted cable segment cable can be installed on the hoisting support assembly, and the saddle assembly is arranged above the cable support frame and close to the upper end portion of the cable support frame; after the straight segment cable is hoisted and fixedly laid on the cable support frame, the twisted cable segment cable is lowered so that the twisted cable segment cable passes through the torque-stop assembly and the saddle assembly and reaches the docking position with the straight segment cable.

[0031] Preferably, at the docking position, the twisted cable segment cable and the straight cable segment cable can be docked with a connector, and the docked cable can be fixed to a cable fixing clamp at the upper end of the cable support frame.

[0032] By means of the cable hoisting and laying device, the cable can be hoisted and laid in the vertical direction as much as possible, thereby preventing the cable hoisting and laying from being affected and restricted by the inclined side wall of the tower of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The figure schematically shows the fixed laying position of the cable in the tower in the prior art;

[0034] Figure 2 Schematically showing a front view and a side view of a cable hoisting and laying device according to an embodiment of the present invention;

[0035] Figure 3 A partial perspective view of a cable hoisting and laying device according to an embodiment of the present invention is schematically shown;

[0036] Figure 4 A schematic diagram of a lifting support assembly according to an embodiment of the present invention is schematically shown;

[0037] Figure 5 Schematically illustrates a schematic diagram of a saddle assembly according to an embodiment of the present invention;

[0038] Figure 6 A schematic diagram of a guide wheel assembly according to an embodiment of the present invention is schematically shown;

[0039] Figure 7 A schematic diagram schematically shows the installation position of the guide wheel assembly according to an embodiment of the present invention;

[0040] Figure 8 A schematic diagram of a first support member for fixing a cable support bracket to a ladder according to an embodiment of the present invention is schematically shown;

[0041] Fig. 9 A schematic diagram of a second support member for fixing a cable support rack to a platform according to an embodiment of the present invention is schematically shown;

[0042] Fig.10 A schematic diagram of a platform in a tower according to an embodiment of the present invention is schematically shown;

[0043] Fig.11 A schematic diagram of hoisting a straight segment cable according to an embodiment of the present invention is schematically shown;

[0044] Fig.12 A schematic diagram of a construction worker fixing a cable according to an embodiment of the present invention is schematically shown;

[0045] Fig.13 A schematic diagram schematically shows a sequence of cable hoisting and laying according to an embodiment of the present invention;

[0046] Fig.14 A schematic diagram schematically shows a cable hoisting state and a cable laying state according to an embodiment of the present invention;

[0047] Fig.15 A schematic diagram of the docking of a straight cable segment and a twisted cable segment after hoisting according to an embodiment of the present invention is shown;

[0048] Fig.16 A schematic diagram schematically shows another example of a cable support frame according to an embodiment of the present invention.

[0049] Description of reference numerals:

[0050] 10-tower; 11-ladder; 12-platform; 122-cable hole; 123-ladder hole; 15-cable; 16-twisted cable; 18-cable net bag; 19-connector; 100-cable hoisting and laying device; 200-straight cable fixed laying assembly; 210-cable support frame; 211-support crossbar; 220-cable fixed wire clamp; 230-guide wheel assembly; 231-outer guide wheel; 232-inner guide wheel Wheel; 233-groove; 234-pressing plate; 235-frame; 250-first support member; 251-cross bar; 252-cross bar; 253-side plate; 260-second support member; 261-cross bar; 262-inclined support plate; 263-connecting plate; 300-hoisting support assembly; 301-longitudinal beam; 302-cross beam; 310-cable hoisting device; 320-anti-twist assembly; 330-saddle assembly; 331-saddle surface. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical concept of the present invention, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals always represent the same components.

[0052] like Figure 2 As shown, the present invention proposes a cable hoisting and laying device 100 , which includes a straight-segment cable fixing and laying component 200 and a hoisting structure located above the straight-segment cable fixing and laying component 200 .

[0053] The straight section cable fixing and laying assembly 200 comprises a cable support frame 210 for supporting the cable 15 . The cable support frame 210 is fixed to the ladder 11 inside the tower 10 of the wind turbine generator set and is located on one side of the ladder 11 in the radial direction of the tower.

[0054] The ladder 11 is a device used to support workers to enter the top of the tower from the bottom of the tower, and can be fixedly connected to the tower 10 by fasteners, welding or nailing. The cable support frame 210 can be located at a position that is easy to touch when the construction workers stand on the ladder 11 and stretch their arms forward. The lateral distance between the cable support frame 210 and the ladder 11 can be designed to be a distance that is convenient for construction workers to construct.

[0055] For example, a plurality of cable fixing clamps 220 for clamping and fixing the cable 15 may be installed on the cable support frame 210, and the cable fixing clamps 220 and the ladder 11 may be spaced apart by a predetermined distance in the radial direction of the tower. The predetermined distance may be designed to facilitate construction workers standing on the ladder 11 and reaching forward to easily fix the cable in the cable fixing clamps 220, and to ensure a certain safety distance between the ladder 11 and the cable. For example, the predetermined distance may be 200 mm to 500 mm.

[0056] Compared with the traditional method of fixing the cable on one or both sides of the tower wall of the ladder, the cable support frame 210 proposed in the present invention can not only facilitate the operation of construction personnel, but also make the cable lifting and fixed laying not affected and restricted by the inclined side wall of the tower, and at the same time avoid adding welding points for welding cable fixing clamps on the inner wall of the tower, so as to avoid affecting the fatigue strength of the tower.

[0057] like Figure 2 and Figure 3 As shown, the cable support frame 210 may include a plurality of support cross bars 211 spaced apart in the vertical direction, and the cable fixing wire clamp 220 may be fixed on a portion of the support cross bars 211 among the plurality of support cross bars 211. For example, the cable fixing wire clamp 220 may include a plurality of cable fixing wire clamps 220 spaced apart in the vertical direction, and is used to fix the cable at a plurality of points in the vertical direction. The cable support frame 210 and the cable fixing wire clamp 220 can provide effective and stable fixation and support for the cable, and prevent the cable from being bent, loosened or dropped unexpectedly, etc.

[0058] exist Figures 2 to 15 In the example shown in , the cable support frame 210 may be a cable fixing and laying ladder frame arranged side by side with the ladder 11, that is, the ladder frame structure of the cable support frame 210 may be similar to the structure of the ladder 11 as a whole, that is, the cable support frame 210 includes two vertical rods extending in the vertical direction and a plurality of support cross bars 211 arranged between the two vertical rods and spaced apart in the vertical direction. Preferably, the cable support frame 210 in the form of a ladder frame may be arranged parallel to the ladder 11 in the radial direction of the tower.

[0059] The structure of the cable support rack 210 shown is generally similar to that of the ladder 11, that is, the cable support rack 210 may include two vertical rods extending in the vertical direction and a plurality of support cross rods 211 arranged between the two vertical rods and spaced apart in the vertical direction, so that Figure 2The cable support frame 210 shown in the figure may also be referred to as a cable ladder. Here, the cable ladder is arranged side by side with the ladder 11, and preferably can be arranged substantially parallel to each other. In addition, the width of the cable support frame 210 may be greater than the width of the ladder 11, but the present invention is not limited thereto, and the width of the cable support frame 210 may also be adjusted according to the number or size (e.g., outer diameter) of the required cables.

[0060] The structure of the cable support frame 210 is not limited to the ladder frame form. For example, in order to reduce the manufacturing cost, the cable support frame 210 in the ladder frame form can be replaced by a plurality of support components fixed to the ladder 11 at intervals along the vertical direction of the ladder 11, such as Fig.16 As shown. Each support assembly is independent of each other, and the support assembly can be designed according to the weight of the cable and the ladder and other stress conditions, so that the support assembly can be sufficient to withstand the forces in the horizontal and vertical directions. The two forms of cable support frames 210 shown in the embodiment of the present invention are only examples, and other forms of support structures can also be selected as long as they can support the cables and fix the cable fixing clamps on one side of the tower in the radial direction of the ladder 11.

[0061] like Figure 2 As shown in , the cable fixing clamps 220 can be arranged in rows on the supporting crossbars 211 of the cable support frame 210, and some of the cable fixing clamps 220 can be arranged close to each platform 12 inside the tower 11. In addition, other cable fixing clamps 220 can be distributed in the sections between the platforms 12 as needed, so that after the cable is hoisted and lifted up, it is convenient for construction workers to stand on the ladder 11 or the platform 12 to move and fix the cable to each cable fixing clamp 220. Figure 3 and Figure 7 As shown in , six cable fixing clamps 220 are fixed on each supporting cross bar 211, and the six cable fixing clamps 220 are separated independently, but the type and number of the cable fixing clamps 220 are not limited thereto. For example, the cable fixing clamps 220 can also be a clamping plate (e.g., a nylon clamping plate) that clamps multiple cables at the same time or has multiple cable clamping positions or clamping holes, or a cable tie (e.g., a nylon belt) can be selected for tying, or other methods of fixing the cables. In addition, the number of the cable fixing clamps 220 can be adjusted according to the number of cables laid.

[0062] In addition, if Figure 2 and Figure 3 As shown in FIG. 1 , a guide wheel assembly 230 for guiding the cable may be provided on a portion of the plurality of support cross bars 211, and the guide wheel assembly 230 may be spaced apart from the cable fixing clamp 220 in the vertical direction. Optionally, the guide wheel assembly 230 may also be provided in a cable through hole 122 (such as a cable through hole 122) of the platform 12 in the tower 10 for the cable to pass through. Fig.10shown).

[0063] like Figure 6 As shown in the separate enlarged view in , the guide wheel assembly 230 may include a frame 235 (e.g., a U-shaped frame) for fixing to the support crossbar 211 of the cable support frame 210 or the platform 12, and an inner guide wheel 232 and an outer guide wheel 231 detachably fixed to the frame 235, and there may be a space between the inner guide wheel 232 and the outer guide wheel 231 for the cable to pass through. When hoisting the cable, the lifting chain and the cable of the cable hoisting device can be passed between the inner guide wheel 232 and the outer guide wheel 231, thereby not only effectively guiding the cable, but also preventing the cable from swinging too much during the hoisting process. After the cable is hoisted to the top, one of the guide wheels can be removed to remove the cable from between the inner guide wheel 232 and the outer guide wheel 231 and fix it in the cable fixing clamp 220. As shown Figure 6 As shown, both ends of each of the inner guide wheel 232 and the outer guide wheel 231 can be placed in the grooves 233 opened in the two side plates of the frame 235, and the guide wheel assembly 230 can be provided with a detachable pressing plate 234 at the groove 233 to press the ends of the inner guide wheel 232 and the outer guide wheel 231. When the inner guide wheel 232 or the outer guide wheel 231 is removed, the guide wheel can be taken out by removing the pressing plate 234. In order to reduce the swing of the cable, the width of the guide wheel assembly 230 can be smaller than the width of the supporting cross bar 211.

[0064] The guide wheel assembly 230 may correspond to a portion of the cable fixing clamp 220 on each supporting cross bar 211 in the vertical direction. Figure 7 As shown, the guide wheel assembly 230 corresponds to three cable fixing clamps 220, and the space between the two guide wheels of the guide wheel assembly 230 can be located near the outer side of the cable fixing clamp 220 in the vertical direction, so that the cable will not be affected by or collide with the cable fixing clamp when the cable is hoisted, and the cable can be easily fixed to the cable fixing clamp after the hoisting.

[0065] This arrangement position of the guide wheel assembly 230 is only an example. The guide wheel assembly 230 can be arranged nearby according to the cable fixing and laying position. For example, a part of the guide wheel assembly 230 in the plurality of guide wheel assemblies 230 can correspond to a part of the cable fixing wire clamp 220 on each support cross bar 211 in the vertical direction (for example, Figure 7 The other portion of the guide wheel assembly 230 may correspond to another portion of the cable fixing clamp 220 (eg, Figure 7 In the case of the three cable fixing clamps 220 on the left, the guide wheel assembly 230 on the right can be used when the three cable fixing clamps 220 on the right are installed and fixed. Similarly, in the case of the three cable fixing clamps 220 on the left, the guide wheel assembly 230 on the left can be used.

[0066] like Figure 2 As shown in , the cable support frame 210 formed as a cable ladder frame can be fixed to the ladder 11 through the first connecting member 250 and fixed to the platform 12 through the second connecting member 260, thereby obtaining sufficient strength support. Figure 3 and Figure 8 As shown, the first connecting member 250 can be arranged on both sides of the cable support frame 210, and the whole is formed into a tripod shape, thereby providing excellent support stability. Figure 8 As shown, the first connecting member 250 may include two triangular side plates 253, three cross bars 251 and 252 (which may be double-headed screws) between the two side plates 253, and fasteners at both ends, the cross bar 251 may be used as a supporting cross bar 211 of the cable support frame 210, and the cross bar 252 may be used as a cross bar of the ladder 11. The first connecting member 250 for fixing the cable support frame 210 and the ladder 11 needs to withstand the radial force of the cable support frame 210 relative to the tower 10 and the vertical downward gravity.

[0067] In addition, if Figure 3 and Fig. 9 As shown, the second connecting member 260 can be an inclined support member, which is used to fix the cable support frame 210 on the platform 12. The second connecting member 260 can include inclined support plates 262 located on both sides, connecting plates 263 connected to the platform 12, and a cross bar 261 (which can be a double-headed screw) between the inclined support plates 262. The cross bar 261 can be used as a supporting cross bar 211 of the cable support frame 210.

[0068] By fixing the ladder 11 to the side wall of the tower 10, and fixing the cable support frame 210 to the ladder 11 and the platform 12 through the first connecting member 250 and the second connecting member 260, the first connecting member 250 and the second connecting member 260 need to be able to withstand the forces of the ladder 11 and the cable support frame 210 in the radial direction and the vertical direction of the tower, and the strength of the first connecting member 250 and the second connecting member 260 can be designed according to the force conditions.

[0069] As described above, by fixing the cable support frame 210 to the ladder 11 and positioning it on one side of the ladder 11 in the radial direction of the tower, the cable support frame 210 can be prevented from being restricted by the inclined tower side wall. At the same time, by providing the guide wheel assembly 230 as described above, the cable can be kept as vertical as possible during lifting, reducing cable bending, swinging, lifting resistance or friction, etc., and ensuring that each cable has sufficient fixed clamping space without the need for construction workers to move the cable. In addition, since the cable support frame 210 is fixed to the ladder 11, compared with the traditional method of laying the cable on the tower side wall (which requires welding the cable clamp to the tower side wall), it is possible to avoid increasing the welding points on the tower side wall and reducing the fatigue strength of the tower as a whole.

[0070] In addition to the above-described solution of fixing the cable support frame 210 on one side of the ladder 11, Figure 2 As shown, the present invention further proposes to dispose a movable cable suspension device 310 above the cable support frame 210 so as to change the position of the cable suspension device 310 correspondingly according to the fixed laying position of the cable.

[0071] The cable hoisting device 310 can be a structure known in the prior art. Different from the prior art, in the traditional cable hoisting system, the cable hoisting device is usually fixed at a designated position on the side wall of the tower to hoist the cable along the side wall of the tower and fix the cable on the side wall of the tower after the hoisting is completed. Since the hoisting point of this cable hoisting device in the prior art is fixed, when hoisting the cable, the power cable can only be moved to place it in the designated cable clamp, which is time-consuming and labor-intensive, and when hoisting the last part of the cable, there is a problem of insufficient cable hoisting space. The movable cable hoisting device 310 proposed in the present invention can effectively solve these problems, can achieve flexible movement, reduce manual intervention, and greatly improve the construction efficiency of cable hoisting and fixed laying.

[0072] like Figure 3 and Figure 4 As shown, the cable hoisting and laying device 100 may include a hoisting support assembly 300, which includes two longitudinal beams 301 fixed to the wall of the tower 10 and a cross beam 302 arranged between the two longitudinal beams 301. The extension direction of the cross beam 302 can be basically consistent with the extension direction of the supporting cross bar 211 of the cable support frame 210. The movable cable hoisting device 310 can be installed on the cross beam 302 and can move along the cross beam 302. For example, a guide rail can be arranged on the cross beam 302, and the cable hoisting device 310 can be arranged in cooperation with the guide rail and move along the cross beam 302, so that the position of the cable hoisting device 310 can be adjusted according to the cable laying position (for example, corresponding to the clamping position of the cable fixing clamp 220 on the supporting cross bar 211 of the cable support frame 210).

[0073] The straight segment cable fixing and laying assembly 200 is used for laying the straight segment cable 15 in the fixed tower 10. The upper end of the cable fixing and laying assembly 200 can be located above the saddle platform so that the upper end of the straight segment cable 15 passes through the top of the saddle platform to be connected with the twisted cable segment cable hanging from the cabin.

[0074] like Figure 3 As shown, the anti-twist assembly 320 configured to support and constrain the twist cable segment cable of the wind turbine generator set and the saddle assembly 330 configured to allow the twist cable segment cable to rest thereon are arranged on the hoisting support assembly 300, and the anti-twist assembly 320 and the saddle surface 331 of the saddle assembly 330 are spaced apart in the radial direction of the tower and the vertical direction, respectively. The anti-twist assembly 320 can be arranged above the hoisting support assembly 300, and the saddle assembly 330 can be arranged below the hoisting support assembly 300.

[0075] In a wind turbine, in order to obtain higher wind energy, the wind turbine needs to yaw frequently to align the impeller with the wind direction. Therefore, the cable bundle will twist when yaw, and a saddle assembly is usually set on the side wall of the tower. The twisted cable segment cable entering the tower from the cabin is generally lowered along the center of the tower, and then the twisted cable segment cable is placed on the saddle surface of the saddle assembly fixed on the side wall of the tower, and the twisted cable segment cable needs to be suspended through the saddle assembly. For example, the current practice is that after the cable enters the tower from the cabin, it droops coaxially with the tower for several meters or more than ten meters, and then after a U-shaped reverse bend of about 1 meter, it is placed on the saddle assembly at the side wall of the tower, and then it is connected with the straight cable segment under the saddle assembly, and the straight cable segment extends to the bottom of the tower.

[0076] The anti-twist assembly 320 plays a role in fixing and supporting the twisted cable segment power cable, preventing the twisted cable segment cable from "bunching" between the anti-twist assembly 320 and the saddle assembly 330, and ensuring that the cable here only has vertical relative movement. Fig.15 As shown, the saddle assembly 330 supports the twisted cable segment cable 16, and meets the bending radius of the cable between the bottom of the anti-twist assembly 320 and the middle of the straight cable segment fixing and laying assembly 200. At the same time, as a structure to ensure the lifting amount of the twisted cable segment cable 16, the connection form of the saddle assembly 330 and the lifting support assembly 300 can be in the form of fastener connection or welding.

[0077] Here, compared with the traditional method of installing the saddle assembly on the tower side wall, since the top tower is a cone section, the traditional method needs to adjust the matching of the saddle structure assembly and the tower side wall each time during design, which increases the difficulty of material management. In contrast, the arrangement of the saddle assembly 330 proposed in the present invention is not limited to the cone structure of the tower side wall, and there is no need to change the connection and fixing structure of the saddle assembly for different tower shapes. A universal saddle assembly can be used for different towers.

[0078] In addition, since the present invention proposes to set the anti-twist assembly 320 above the hoisting support assembly 300, and to space the anti-twist assembly 320 and the saddle assembly 330 in the radial direction and the vertical direction of the tower, the anti-twist effect of the anti-twist assembly 320 can meet the bending radius of the cable even if the saddle assembly 330 is not set on the side wall of the tower (that is, the saddle assembly 330 is not separated from the center of the tower along which the twisted cable segment cable sags by a long distance). At the same time, the saddle assembly 330 can be positioned above the straight cable fixing and laying assembly 200, which is convenient for the butt joint of the twisted cable segment cable and the straight cable segment cable.

[0079] In general, through the cable hoisting and laying device as described above, combined with the straight cable fixed laying assembly 200 arranged as above, the movable cable hoisting device 310 located above the cable support frame 210, the saddle assembly 330 and the anti-torsion assembly 320, it is possible to meet the simultaneous hoisting, fixed laying and docking of multiple power cables, thereby greatly improving the construction efficiency of the hoisting and fixed laying of the power cables, and improving the fatigue strength of the tower and the overall reliability of the unit operation.

[0080] In addition, through the above-mentioned cable hoisting and laying device, in addition to the ladder through hole 123 for the ladder 11 to pass through, the platform 12 of the tower of the wind turbine generator set can also be provided with a cable through hole 122 for the cable to pass through or for the cable support frame 210 in the form of a ladder rack to pass through. Fig.10 As shown, an independent through-hole space is provided for the cable, ensuring that the lifting and fixed laying of the cable are not restricted by the through-hole space.

[0081] The following will refer to Figures 11 to 15 A cable hoisting and laying method according to an embodiment of the present invention is described in detail.

[0082] In general, the cable support frame 210 can be first fixed to the ladder 11 inside the tower 10 of the wind turbine generator set and the cable support frame 210 can be located on one side of the ladder 11 in the radial direction of the tower, and then the cable 15 can be hoisted in the vertical direction. After the hoisting is completed, the cable 15 can be fixedly laid on the cable support frame 210.

[0083] Specifically, Fig.11As shown, the cable 15 is hoisted by using a movable cable hoisting device 310 disposed above the cable support frame 210, and the position of the cable hoisting device 310 can be changed according to the fixed laying position of the cable to be hoisted. For example, the movable cable hoisting device 310 is installed on the hoisting support assembly 300, and the cable hoisting device 310 is moved to one end of the guide rail on the crossbeam 302 for locking and fixing to prevent movement, while ensuring the accurate position of the lifting cable, and multiple guide wheel assemblies 230 are installed on the support crossbar 211 of the cable support frame 210 or installed at the cable through hole 122 of each platform 12 in the tower 10 at intervals. Then, the guide chain of the movable cable hoisting device 310 is lowered to the bottom of the tower, and one or more cables (for example, three cables are hoisted at the same time, corresponding to three cables of UVW three phases) are suspended at the guide chain lifting position of the movable cable hoisting device 310 using the cable net bag 18. When the guide chain lifting action of the movable cable hoisting device 310 is started, the cable 15 is lifted through the through holes of different tower section platforms to the top of the saddle platform 12 by utilizing the suspension contraction effect of the cable net bag 18 . Fig.11 The diagram shows a state in which the cable suspension device lifts the straight section cable to the uppermost position.

[0084] Here, due to the arrangement of the cable support frame 210, the guide wheel assembly 230 and the dedicated through hole 122, the cable 15 can be prevented from bending, swinging and rubbing during the lifting process, and the lifting resistance can be reduced. Therefore, multiple cables can be lifted at the same time, and the cable hoisting device 310 that meets different power conditions can be appropriately selected. At the same time, the lifting point can be flexibly moved and can accurately correspond to the clamping position of the cable fixing clamp. Therefore, each time the cable is lifted, there is enough clamping space, avoiding the time-consuming and laborious manual movement of the cable to the clamping position. Therefore, even if multiple cables are lifted at the same time, the construction personnel can easily fix the cables to the corresponding cable fixing clamps.

[0085] like Fig.12 As shown, after one lifting (for example, lifting three cables at the same time), the construction worker can stand on the ladder and use some cable fixing clamps 220 to fix the cables 15 from top to bottom to ensure that the cables 15 do not slide down or become loose. Fig.12 The dotted line in FIG. 1 refers to the vertically hoisted state of the cable 15 during hoisting, and the solid line refers to the fixedly laid state of the cable 15 fixedly laid on the cable support frame 210 .

[0086] Then, if Fig.13 As shown, Fig.13 As shown by the arrow in the figure, the position of the cable hoisting device 310 is changed from right to left in sequence to move it to the next lifting position, and then the guide chain of the cable hoisting device 310 is lowered to the bottom of the tower to continue the next cable lifting operation. Repeat the above actions to sequentially lift multiple cables 15 to the position above the saddle platform 12 and docking with the twisted cable segment cable.

[0087] After all the cables 15 are lifted, the construction workers stand on the ladder and fix the parts of the cables that are not fixed by wire clamps from top to bottom, and at the same time remove the guide wheel assemblies 230 at each platform to ensure that all cables are laid and fixed.

[0088] Fig.14 A side view of the hoisting and laying state of the straight cable 15 is shown, the cable support frame 210 (e.g., ladder frame) can be substantially parallel to the ladder 11, the ladder 11 and the cable support frame 210 are not vertical, but slightly inclined, but it does not affect the hoisting of the cable. In contrast, the cable can be substantially vertical when it is in the hoisting state.

[0089] After completing the above steps, the movable cable suspension device 310 can be disassembled, and the twisted cable segment cable 16 can be lowered, and the straight cable segment cable 15 and the twisted cable segment cable 16 can be docked or connected with different diameters using the connector 19 at the docking position. Fig.15 shown.

[0090] Through the cable hoisting and laying structure and method, the present invention can realize the simultaneous hoisting of multiple power cables and convenient on-site fixed laying, thereby greatly improving the construction efficiency of the hoisting and fixed laying of power cables.

[0091] In addition, the number of tower side wall welding structures can be reduced, which can improve the fatigue strength of the tower.

[0092] In addition, the number of cable connectors used can be reduced, the overall reliability of the unit operation can be improved, the design cost can be reduced, and later maintenance on site can be facilitated.

[0093] The specific implementation methods of the present invention are described in detail above. Although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be combined, modified and improved without departing from the principle and spirit of the present invention whose scope is defined by the claims (for example, different technical features of the present invention can be combined to obtain new technical solutions). These combinations, modifications and improvements should also be within the scope of protection of the present invention.

Claims

1. A cable hoisting and laying device, characterized in that: The cable hoisting and laying device comprises a cable support frame (210) for supporting a cable (15); the cable support frame (210) is fixed to a ladder (11) inside a tower (10) of a wind turbine generator set and is located on one side of the ladder (11) in a radial direction of the tower; A plurality of cable fixing clamps (220) for clamping and fixing the cable (15) are installed on the cable support frame (210), and the cable fixing clamps (220) are spaced apart from the ladder (11) by a predetermined distance in the radial direction of the tower; The cable support frame (210) comprises a plurality of support cross bars (211) spaced apart in a vertical direction, and the cable fixing clamp (220) is fixed on a portion of the support cross bars (211) among the plurality of support cross bars (211); A guide wheel assembly (230) for guiding cables is arranged on a portion of the plurality of support cross bars (211), and the guide wheel assembly (230) is spaced apart from the cable fixing clamp (220) in the vertical direction; or, the guide wheel assembly (230) for guiding cables is arranged at a cable through hole (122) for the cable to pass through, on a platform (12) in the tower (10) of the wind turbine generator set; There are a plurality of guide wheel assemblies (230), a portion of the plurality of guide wheel assemblies (230) corresponds in the vertical direction to a portion of the cable fixing wire clamps (220) on each of the support cross bars (211), and another portion of the plurality of guide wheel assemblies (230) corresponds in the vertical direction to another portion of the cable fixing wire clamps (220) on each of the support cross bars (211).

2. The cable hoisting and laying device according to claim 1, characterized in that: The cable support frame (210) is a cable fixing and laying ladder frame arranged side by side with the ladder (11), and the cable fixing and laying ladder frame comprises two vertical rods extending in the vertical direction and a plurality of supporting cross rods arranged between the two vertical rods; or The cable support frame (210) is a plurality of support assemblies fixed to the ladder (11) at intervals along the vertical direction of the ladder (11), each support assembly comprising two side plates fixed to the ladder (11) and a support crossbar fixed between the two side plates.

3. The cable hoisting and laying device according to claim 1, characterized in that: The guide wheel assembly (230) comprises a frame (235) for fixing to the supporting cross bar (211) or the platform (12), and an inner guide wheel (232) and an outer guide wheel (231) detachably fixed to the frame (235), wherein a space is provided between the inner guide wheel (232) and the outer guide wheel (231) for the cable (15) to pass through.

4. The cable hoisting and laying device according to claim 3, characterized in that: Both ends of each of the inner guide wheel (232) and the outer guide wheel (231) are placed in a groove (233) opened in the side plate of the frame (235), and the guide wheel assembly (230) is provided with a detachable pressing plate (234) for pressing the ends of the inner guide wheel (232) and the outer guide wheel (231) at the groove (233).

5. The cable hoisting and laying device according to any one of claims 1 to 4, characterized in that: The cable hoisting and laying device comprises a movable cable hoisting device (310) arranged above the cable support frame (210) for hoisting the cable (15); The cable hoisting and laying device also includes a hoisting support assembly (300), wherein the hoisting support assembly (300) includes two longitudinal beams (301) fixed to the wall of the tower (10) and a cross beam (302) arranged between the two longitudinal beams (301), and the cable hoisting device (310) is capable of moving along the cross beam (302).

6. The cable hoisting and laying device according to claim 5, characterized in that: A torsion-stop assembly (320) configured to support and constrain a twisted cable segment of a wind turbine generator set and a saddle assembly (330) configured to allow the twisted cable segment to rest thereon are arranged on the hoisting support assembly (300), and the torsion-stop assembly (320) and a saddle surface (331) of the saddle assembly (330) are spaced apart in the radial direction and the vertical direction of the tower, respectively.

7. A wind turbine generator set, characterized in that: It comprises a cable hoisting and laying device according to any one of claims 1-6.

8. The wind turbine generator set according to claim 7, characterized in that: The tower (10) of the wind turbine generator set comprises a plurality of platforms (12) spaced apart in the vertical direction, each platform (12) being provided with a ladder through hole (123) for a ladder (11) to pass through and a cable through hole (122) for a cable to pass through.

9. The wind turbine generator set according to claim 8, characterized in that: The cable support frame (210) is fixed to the ladder (11) via a first support member (250), and / or the cable support frame (210) is fixed to the platform (12) via a second support member (260).

10. A cable hoisting and laying method, characterized in that: include: Fixing a cable support frame (210) of a cable hoisting and laying device to a ladder (11) inside a tower (10) of a wind turbine generator set and positioning the cable support frame (210) on one side of the ladder (11) in a radial direction of the tower, wherein the cable hoisting and laying device is the cable hoisting and laying device according to any one of claims 1 to 6; The cable (15) is hoisted in a vertical direction, and the cable (15) is fixedly laid on the cable support frame (210).

11. The cable hoisting and laying method according to claim 10, characterized in that: The cable support frame (210) comprises a plurality of support cross bars (211) spaced apart in a vertical direction, and the cable hoisting and laying method further comprises: Installing a plurality of cable fixing clamps (220) for clamping and fixing the cables (15) on a portion of the supporting crossbars (211) among the plurality of supporting crossbars (211), and spacing the plurality of cable fixing clamps (220) from the ladder (11) by a predetermined distance in a radial direction of the tower; The cable (15) is hoisted using a movable cable hoisting device (310) disposed above the cable support frame (210), and the position of the cable hoisting device (310) is changed according to the fixed laying position of the cable to be hoisted.

12. The cable hoisting and laying method according to claim 11, characterized in that: The cable hoisting device (310) is used to hoist one or more cables at a time.

13. The cable hoisting and laying method according to claim 11, characterized in that: A plurality of guide wheel assemblies (230) are installed on the support crossbar (211) or installed at a cable through hole (122) of a platform (12) in the tower (10) for cables to pass through, The suspension chain of the cable suspension device (310) and the cable (15) are passed between the inner guide wheel (232) and the outer guide wheel (231) of the guide wheel assembly (230).

14. The cable hoisting and laying method according to claim 13, characterized in that: After the cable (15) is hoisted into place, the inner guide wheel (232) or the outer guide wheel (231) is removed to take out the cable (15), and the cable (15) is fixed to the corresponding cable fixing clamp (220).

15. The cable hoisting and laying method according to any one of claims 10 to 14, characterized in that: A hoisting support assembly (300) is arranged above the cable support frame (210), and a torsion-stop assembly (320) for supporting and restraining a twisted cable segment cable (16) of a wind turbine generator set and a saddle assembly (330) for supporting the twisted cable segment cable (16) are installed on the hoisting support assembly (300). The saddle assembly (330) is arranged above the cable support frame (210) and close to the upper end of the cable support frame (210); After the straight-segment cable (15) is hoisted and fixedly laid on the cable support frame (210), the twisted-cable segment cable (16) is lowered so that the twisted-cable segment cable (16) passes through the anti-twist assembly (320) and the saddle assembly (330) and reaches a docking position with the straight-segment cable (15).

16. The cable hoisting and laying method according to claim 15, characterized in that: At the docking position, the twisted cable segment cable (16) is docked with the straight cable segment cable (15) using a connector (19), and the docked cables are fixed to a cable fixing clamp (220) at the upper end of the cable support frame (210).

Images