A flexible connection structure of an accessory in a wind power tower, a wind power tower and a wind turbine generator

Abstract

The application provides a wind power tower drum inner accessory flexible connection structure, a wind power tower drum and a wind power generator. The wind power tower drum inner accessory flexible connection structure comprises a suspension platform, a tensioning cable and a fixing frame. The top of the suspension platform is connected with the top flange of the top of the tower drum. The bottom of the suspension platform is connected with the bottom flange of the bottom of the tower drum through the tensioning cable. The tensioning cable is connected with a plurality of fixing frames for connecting the wind power tower drum inner accessories. The plurality of fixing frames are uniformly distributed along the axial direction of the tensioning cable. The free end of the fixing frame is in contact with the inner wall of the wind power tower drum. The tower drum body is free of welding points, so that the fatigue resistance of the tower drum body is improved. The suspension connection is stronger than the magnetic attraction connection. Compared with the truss structure, the complexity of the structure of the tower drum body is reduced, and the weight is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind power, and particularly relates to a flexible connection structure of an inner accessory of a wind power tower, the wind power tower and a wind power generator. BACKGROUND

[0002] Traditional inner accessories of a wind power tower mainly include a ladder and a platform, and there are three main installation methods, the first method is to weld an ear plate or a welding block on the inner side of the tower wall, the ladder and the platform are connected with the ear plate or the welding block, the second method is to design without welding points, and the ladder and the platform are installed by using a HI LTI shooting nail or a permanent magnetic adsorption structure, and the third method is to design a support truss in the tower, and the ladder and the platform are connected with the truss.

[0003] However, the welding block or the welding ear plate reduces the fatigue performance of the tower and shortens the service life of the tower, the shooting nail or the magnetic adsorption structure has weak bearing capacity and cannot bear large alternating loads, and the truss structure leads to complex structure, large weight and high cost. SUMMARY

[0004] The present application provides a flexible connection structure of an inner accessory of a wind power tower, the wind power tower and a wind power generator, and solves the above problems in the prior art.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The present application provides a flexible connection structure of an inner accessory of a wind power tower, the wind power tower and a wind power generator, and solves the above problems in the prior art.

[0007] The tightening cable is connected with a plurality of fixing frames for connecting the inner accessories of the wind power tower, and the plurality of fixing frames are uniformly distributed along the axial direction of the tightening cable.

[0008] The free end of the fixing frame is in contact with the inner wall of the wind power tower.

[0009] Preferably, the fixing frame comprises a mounting block, and at least three legs are uniformly distributed on the side wall of the mounting block along the circumferential direction thereof; one of the legs comprises two parallel arranged sub-legs; and the two sub-legs are used for connecting the ladder among the inner accessories of the wind power tower.

[0010] Preferably, the leg comprising the two sub-legs comprises a connecting piece, one end of the connecting piece is connected with the mounting block, the other end of the connecting piece is connected with two connecting sub-pieces, and an included angle is arranged between the two connecting sub-pieces; the free end of each connecting sub-piece is connected with one sub-leg, the two sub-legs are arranged in parallel, and the ladder is installed between the two sub-legs.

[0011] Preferably, the mounting plate for fixing the cable in the wind power tower inner accessory is arranged on the leg.

[0012] Preferably, the free end of each leg is provided with a flexible piece, and the leg is in contact with the inner wall of the wind power tower through the flexible piece.

[0013] Preferably, a limiting clamping groove for connecting the tensioning cable is arranged on the flexible piece.

[0014] Preferably, the tensioning cable comprises a flexible rope and a tensioning piece, wherein at least one tensioning piece is arranged at one end of the flexible rope.

[0015] A limiting block is arranged on the flexible rope, and the limiting block is connected with the limiting clamping groove arranged on the fixing block.

[0016] Preferably, the suspension platform comprises a platform body and a plurality of hanger arms, wherein the plurality of hanger arms are evenly distributed along the circumferential direction of the top edge of the platform body; the free end of the hanger arm is connected with the top flange; and a plurality of lifting lugs are arranged on the bottom of the platform body along the circumferential direction thereof, and each lifting lug is connected with a tensioning cable.

[0017] A wind power tower comprises a tower body, wherein the top of the tower body is provided with a top flange, the bottom of the tower body is provided with a bottom flange, and an inner accessory flexible connection structure for connecting the inner accessory of the wind power tower is arranged between the top flange and the bottom flange.

[0018] A wind power generator comprises a wind power tower, wherein an inner accessory flexible connection structure for connecting the inner accessory of the wind power tower is arranged in the inner cavity of the wind power tower.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The wind power tower inner accessory flexible connection structure provided by the present application comprises a suspension platform, a tensioning cable and a fixing frame, wherein the top of the suspension platform is connected with the top flange of the tower body, the top end of the tensioning cable is connected with the suspension platform, the bottom end of the tensioning cable is connected with the bottom flange of the tower body, the fixing frame is connected with the tensioning cable and is used for limiting the axial movement of the fixing frame along the tower body, the outer end of the fixing frame is used for abutting against the inner wall of the tower body and is used for limiting the radial movement of the fixing frame along the tower body, and the fixing frame is used for mounting the inner accessory structure such as a ladder stand; in this way, the weight of the inner accessory connected with the fixing frame, the suspension platform and the fixing frame is all loaded on the top flange, there is no welding point in the tower body, the fatigue resistance of the tower body can be improved, the suspension connection is stronger than the magnetic attraction connection, the bearing capacity is stronger, the complexity of the structure of the tower body is reduced compared with the truss structure, and the weight is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the tower body structure provided by the present application;

[0022] Figure 2 is the tower body partial sectional view provided by the present application;

[0023] Figure 3 is the suspension platform top view provided by the present application;

[0024] Figure 4 is the suspension platform bottom view provided by the present application;

[0025] Figure 5 is the fixed frame structure provided by the present application;

[0026] Figure 6 is the inner accessory mounting structure partial view provided by the present application, which is mounted with a ladder and a cable;

[0027] Figure 7 is the structure schematic diagram of the tensioning cable provided by the present application;

[0028] Figure 8 is the sectional view of the limiting slot provided by the present application;

[0029] Wherein, 101, the barrel; 102, the top flange; 103, the bottom flange; 200, the suspension platform; 210, the platform body; 211, the platform plate; 212, the lifting lug; 213, the reinforcing skirt; 214, the reinforcing rib; 215, the manhole; 216, the manhole cover plate; 220, the lifting arm; 300, the tensioning cable; 301, the flexible rope; 302, the tensioning piece; 303, the limiting block; 400, the fixed frame; 410, the mounting block; 420, the supporting leg; 430, the sub-supporting leg; 440, the ear plate; 450, the cable clamp; 460, the mounting plate; 470, the flexible piece; 481, the through hole; 482, the open slot; 483, the accommodating slot; 500, the ladder; 600, the cable. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0031] The present application will be described below in combination with Figures 1 to 8 A flexible connection structure of an inner accessory of a wind power tower, a wind power tower and a wind power generator are described.

[0032] The application provides a flexible connection structure of an inner accessory of a wind power tower drum.

[0033] The flexible connection structure of the inner accessory comprises a suspension platform 200, a tensioning cable 300 and a fixing frame 400.

[0034] The top of the suspension platform 200 is used for being connected with the top flange 102, the top end of the tensioning cable 300 is used for being connected with the bottom of the suspension platform 200, and the bottom end of the tensioning cable 300 is used for being connected with the bottom flange 103.

[0035] The fixing frame 400 is used for being connected with the tensioning cable 300, and the outward extending end of the fixing frame 400 is used for abutting against the inner side wall of the tower drum body.

[0036] The fixing frame 400 is provided in plurality, and the plurality of fixing frames 400 are uniformly distributed along the axial direction of the cylinder body 101.

[0037] The tensioning cable 300 is tensioned between the suspension platform 200 and the bottom flange 103, the fixing frame 400 is connected with the tensioning cable 300, when the tower drum body is upright, the tensioning cable 300 can limit the movement of the fixing frame 400 along the axial direction of the tower drum body, the outward extending end of the fixing frame 400 abuts against the inner side wall of the cylinder body 101, and the movement of the fixing frame 400 along the radial direction of the cylinder body 101 can be limited, so that the position of the fixing frame 400 is fixed, and after the fixing frame 400 is fixed, a stable installation carrier is provided for the inner accessory structure such as the ladder stand 500.

[0038] The flexible connection structure of the inner accessory of the wind power tower drum has the following advantages:

[0039] The structure has no welding points in the inside of the tower drum body, improves the fatigue performance of the tower drum body, reduces the weight of the tower drum body, and prolongs the service life of the tower drum body.

[0040] The structure uses the tensioning cable 300, the rigging is a flexible structure, is not sensitive to the deformation of the tower drum body in the processing and transportation, reduces the processing and manufacturing requirements of the tower drum body, and has strong fault tolerance.

[0041] The structure has low complexity, small weight and low cost.

[0042] The suspension platform 200 comprises a platform body 210 and a plurality of lifting arms 220, and the lifting arm 220 can be a connecting rod.

[0043] The plurality of lifting arms 220 can be uniformly distributed along the circumferential direction of the top edge of the platform body 210, the bottom end of each lifting arm 220 is connected with the platform body 210, and the top of the lifting arm 220 is connected with the top flange 102.

[0044] The top of the tensioning cable 300 is connected to the bottom of the platform body 210.

[0045] Referring to Figure 3 and Figure 4 The twelve boom arms 220 are evenly arranged on the top edge of the platform body 210 along the circumference of the platform body 210.

[0046] The bottom of the boom arm 220 and the platform body 210 can be connected by welding or bolting, and the top of the boom arm 220 is connected to the inner arc surface of the top flange 102. After connection, the suspended platform 200 is suspended on the top flange 102, and there is no magnetic attraction, welding, or other connection relationship with the inner wall of the cylinder 101. At the same time, since the boom arm is a flexible connection, the influence of the tolerance deformation of the platform body 210 is eliminated.

[0047] The platform body 210 includes a platform plate 211, an ear 212, and a manhole 215. The outer diameter of the platform plate 211 is less than or equal to the inner diameter of the top of the cylinder 101, so that the platform plate 211 can be installed inside the cylinder 101. When the outer diameter of the platform plate 211 is equal to the inner diameter of the top of the cylinder 101, the outer edge of the platform plate 211 is in contact with the inner wall of the cylinder 101.

[0048] The ear 212 can be arranged at the bottom of the platform plate 211, and the number of the ear 212 is the same as the number of the tensioning cable 300. Each ear 212 is connected to one tensioning cable 300. For example, the number of the tensioning cable 300 can be four, and the number of the ear 212 is also the same four.

[0049] The plurality of ears 212 are arranged at the bottom edge of the platform plate 211 along the circumference of the platform plate 211.

[0050] The manhole 215 can be arranged on one side of the platform plate 211, and the manhole 215 penetrates the platform plate 211, so that the worker can pass through the platform plate 211 to the top of the platform plate 211.

[0051] In addition, a manhole cover 216 can also be arranged at the manhole 215. When the worker passes through the manhole 215 from bottom to top to the platform plate 211, the manhole cover 216 can be closed to prevent the worker from accidentally falling from the manhole 215.

[0052] The platform plate 211 can be composed of a plurality of segments.

[0053] The bottom of the platform plate 211 can be provided with a plurality of reinforcing ribs 214 to increase the carrying capacity of the platform plate 211.

[0054] The platform body 210 further comprises a reinforcing skirt 213 arranged at the bottom of the platform plate 211, the reinforcing skirt 213 can be arranged along the bottom edge of the platform plate 211, and the reinforcing skirt 213 can enhance the bearing capacity of the platform plate 211. The lug 212 described above can be connected with the reinforcing skirt 213 through bolts.

[0055] The tightening cable 300 comprises flexible ropes 301 and tightening members 302, the top of the tightening cable 300 is connected with the lug 212 through the tightening member 302, or the bottom of the tightening cable 300 is connected with the bottom flange 103 through the tightening member 302, or the top of the tightening cable 300 and the lug 212 and the bottom of the tightening cable 300 and the bottom flange 103 are both connected through the tightening member 302, and the tightening member 302 can adjust the tightness of the tightening cable 300, and can be adjusted adaptively according to the height of the cylinder body 101.

[0056] The top of the tightening cable 300 can be connected with the lug 212 through a shackle, and the bottom of the tightening cable 300 is connected with the bottom flange 103 through the tightening member 302 and the shackle, so that the tightness of the tightening cable 300 can be adjusted at the bottom of the tower cylinder body, without the need to climb to the top of the tower cylinder body to adjust, thereby reducing the labor intensity of workers.

[0057] The tightening member 302 described above can be a basket bolt or other tightening bolt structure.

[0058] At least one limiting block 303 can be arranged on each flexible rope 301, and the number of the limiting blocks 303 on each flexible rope 301 is the same as the number of the fixing frames 400.

[0059] A limiting clamping groove can be arranged on the fixing frame 400 at a position corresponding to the limiting block 303, the limiting block 303 is clamped in the limiting clamping groove, and is used to limit the movement of the fixing frame 400 along the length direction of the flexible rope 301, or in other words, limit the movement of the fixing frame 400 along the axial direction of the cylinder body 101.

[0060] The fixing frame 400 can comprise a mounting block 410 and at least three supporting legs 420, three supporting points can determine a supporting plane, therefore, the number of the supporting legs 420 is set to be at least three, and the plurality of supporting legs 420 are installed on the mounting block 410 in a radial manner.

[0061] The end of the supporting leg 420 away from the mounting block 410 is used to contact the inner wall of the cylinder body 101.

[0062] In the embodiment, the number of the supporting legs 420 is three, and the three supporting legs 420 can reduce the weight of the fixing frame 400 as much as possible, of course, the number of the supporting legs 420 can be four or more.

[0063] One of the three legs 420 can include two sub-legs 430, which can be distributed radially. An ear plate 440 can be arranged on each of the two opposite surfaces of the two sub-legs 430, and the two ear plates 440 can be used to mount a ladder 500, and the two sides of the ladder 500 can be connected to the ear plates 440 by bolts.

[0064] A cable fixing device can also be arranged between the two sub-legs 430, which can include a cable clamp 450 and a mounting plate 460. The mounting plate 460 is arranged along the extension direction of the sub-leg 430, and the cable clamp 450 is provided with a preset hole for accommodating the cable 600. The two ends of the mounting plate 460 can be detachably connected to the two sub-legs 430 by bolts. When the cable 600 passes through the preset hole, the mounting plate 460 can be connected to the sub-leg 430 to fix the cable 600.

[0065] A flexible piece 470 can be arranged at the end of the leg 420 away from the mounting block 410. The flexible piece 470 can achieve soft contact between the leg 420 and the inner wall of the cylinder 101, preventing damage to the inner wall of the cylinder 101.

[0066] The limiting clamping groove can be arranged on the flexible piece 470. A through hole 481 can be arranged on the flexible piece 470, which penetrates the flexible piece 470 along the axial direction of the cylinder 101. An open slot 482 can be arranged on the outer side of the flexible piece 470, which penetrates the flexible piece 470 along the axial direction of the cylinder 101. The open slot 482 communicates the inner and outer sides of the through hole 481. An accommodation groove 483 for accommodating the limiting block 303 can be arranged at the bottom of the flexible piece 470 corresponding to the through hole 481.

[0067] The aperture of the accommodation groove 483 is larger than the aperture of the through hole 481; and the accommodation groove 483 communicates with the open slot 482.

[0068] The limiting block 303 can be an expansion knot arranged on the flexible rope 301.

[0069] When installing the fixing frame 400, the flexible rope 301 can pass through the open slot 482 into the through hole 481 above the expansion knot. The fixing frame 400 is pressed downward, so that the expansion knot enters the accommodation groove 483. Due to the blockage of the expansion knot, the fixing frame 400 cannot continue to move downward, so that the fixing frame 400 is fixed on the flexible rope 301.

[0070] The application further provides a wind power tower, which comprises a tower body and a wind power tower inner accessory mounting structure arranged in the tower body, and the wind power tower mounting structure is the wind power tower mounting structure as described above.

[0071] In an embodiment of the application, the wind power tower further comprises a ladder 500 arranged between two sub-legs 430 of the plurality of fixing frames 400, and the two sides of the ladder 500 are connected with the ear plates 440 between the sub-legs 430 through bolts to fix the ladder 500.

[0072] In an embodiment of the application, the wind power tower further comprises a cable 600, the mounting plate 460 mounted on the two sub-legs 430 is dismounted, the cable 600 is threaded through the preset hole, and then the mounting plate 460 is mounted back on the sub-legs 430 to fix the cable 600.

[0073] The application further provides a wind turbine, which comprises the wind power tower as described above, and further comprises the wind power tower inner accessory mounting structure as described above, and therefore has the same advantages as described above.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, and not to limit the same; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A flexible connection structure for internal accessories of a wind turbine tower, characterized in that, It includes a suspended platform (200), a tension cable (300), and a fixing frame (400). The top of the suspended platform (200) is connected to the top flange of the tower top, and the bottom of the suspended platform (200) is connected to the bottom flange of the tower bottom via the tension cable (300). The tension cable (300) is connected to a plurality of fixing brackets (400) for connecting accessories inside the wind turbine tower; the plurality of fixing brackets (400) are evenly distributed along the axial direction of the tension cable (300); The free end of the fixing frame (400) is in contact with the inner wall of the wind turbine tower; The mounting frame (400) includes a mounting block (410), on which at least three legs (420) are evenly distributed along its circumference on the side wall; one of the legs includes two parallel sub-legs; the two sub-legs are used to connect to the ladder (500) in the accessories inside the wind turbine tower. Each outrigger has a flexible element (470) at its free end, and the outrigger contacts the inner wall of the wind turbine tower through the flexible element (470). The flexible component (470) is provided with a limiting slot for connecting with the tensioning cable (300); The support leg, which includes two sub-legs, is provided with a mounting plate (460) for securing cables (600) in accessories inside the wind turbine tower.

2. The flexible connection structure for internal accessories of a wind turbine tower according to claim 1, characterized in that, The leg, which includes two sub-legs, includes a connector. One end of the connector is connected to the mounting block (410), and the other end of the connector is connected to two connecting sub-pieces. An angle is provided between the two connecting sub-pieces. The free end of each connecting sub-piece is connected to a sub-leg. The two sub-legs are arranged in parallel. The ladder (500) is installed between the two sub-legs.

3. The flexible connection structure for internal accessories of a wind turbine tower according to claim 1, characterized in that, The tensioning cable (300) includes a flexible rope (301) and a tensioning member (302), wherein at least one tensioning member (302) is provided, and one tensioning member is installed at one end of the flexible rope (301); The flexible rope (301) is provided with the same number of limiting blocks (303) as the fixed frame (400), and the limiting blocks (303) are connected to the limiting slots opened on the fixed frame (400).

4. The flexible connection structure for internal accessories of a wind turbine tower according to claim 1, characterized in that, The suspended platform (200) includes a platform body (210) and multiple booms (220), wherein the multiple booms (220) are evenly distributed along the circumferential direction of the top edge of the platform body (210); the free ends of the booms (220) are connected to the top flange (102); multiple lifting lugs (212) are arranged along the circumference of the bottom of the platform body (210), and each lifting lug is connected to a tension cable (300).

5. A wind turbine tower, characterized in that, The tower body (101) is provided with a top flange (102) at the top and a bottom flange (103) at the bottom. A flexible connection structure for connecting internal accessories as described in any one of claims 1-4 is provided between the top flange (102) and the bottom flange (103).

6. A wind turbine generator set, characterized in that, The invention includes a wind turbine tower, wherein the inner cavity of the wind turbine tower is provided with a flexible connection structure for connecting internal accessories as described in any one of claims 1-4.

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