Tower of wind turbine generator

Abstract

The utility model discloses a wind turbine generator tower which comprises a tower root, a stress detection assembly and a fixing assembly, a supporting table is fixedly arranged on the inner side of a tower drum, the stress detection assembly is located on the inner side of the tower root, the stress detection assembly comprises a steel cable, an adjusting base, a tension detector and a fixing base, the steel cable is connected below the fixing base, and the adjusting base is connected with the tension detector. A tension detector is arranged in the center of the steel cable in a penetrating mode, an adjusting base is connected to the side, away from the fixing base, of the steel cable, the fixing assembly is located below the tower drum, and the fixing assembly comprises a supporting base, a first fixing block, a second fixing block and a damping arm; a damping arm is fixedly connected between the first fixing block and the second fixing block. According to the tower root stress observation device, the size and distribution of stress borne by a tower root can be visually observed, and the potential safety hazard caused by the fact that maintenance personnel cannot make judgment in time when a tower is in a limit state is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting towers, in particular to a tower for a wind turbine generator set. Background Art

[0002] The wind turbine tower is the tower pole for wind power generation. It mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the unit. The height of the wind turbine is generally about 100 meters, and the wind farm is generally selected in a vast plain or hilly or mountainous area. The wind speed is high all year round, so the support of the wind turbine is a very important structural component. For example, the patent document with application number CN202122343524.9 discloses a cylindrical tower of a wind turbine set. By installing multiple annular support rings at equal distances on the inner side of the inner beam, the special shape of the ring can effectively disperse the forces in all directions evenly, thereby improving the inner beam's ability to withstand external resistance.

[0003] However, in similar schemes mentioned above, the root of the tower is the most severely stressed part of the entire tower and bears the largest swing torque, resulting in that the tearing and breaking of the wind turbine tower mostly occur at the root of the tower, and the stress size and distribution at the bottom of the tower cannot be observed intuitively, resulting in that when the tower is in an extreme state, maintenance personnel cannot make timely judgments, thus posing a safety hazard.

[0004] Therefore, in view of this, research and improvement are conducted on the existing structural deficiencies, and a wind turbine tower is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a wind turbine tower, which solves the above-mentioned similar solutions proposed in the above-mentioned background technology. The root of the tower is the most severely stressed part of the entire tower and bears the largest swing torque, resulting in that the tearing and breaking of the wind turbine tower mostly occur at the root of the tower, and the stress size and distribution at the bottom of the tower cannot be intuitively observed, resulting in that when the tower is in an extreme state, the maintenance personnel cannot make a judgment in time, thus posing a safety hazard.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine tower, comprising a tower root, a stress detection assembly and a fixing assembly, wherein the tower barrel is bolted to the top of the tower root, and a support platform is fixedly arranged on the inner side of the tower barrel, and the stress detection assembly is located on the inner side of the tower root, and the stress detection assembly comprises a steel cable, an adjustment seat, a tension detector and a fixing seat, four groups of the fixing seats are arranged at the edge of the lower end surface of the support platform, and the steel cable is connected to the bottom of the fixing seat, and the tension detector is arranged through the center of the steel cable, the side of the steel cable away from the fixing seat is connected to the adjustment seat, and the fixing assembly is located below the tower barrel, and the fixing assembly comprises a support seat, a first fixing block, a second fixing block, and a shock absorbing arm, the support seat is fixed to the outer side of the tower root, and four groups of the first fixing blocks are arranged on the outer side of the tower root, and several groups of the second fixing blocks are fixed to the inner side of the support seat, and the shock absorbing arm is fixedly connected between the first fixing block and the second fixing block.

[0007] Furthermore, a flange ring is welded at a connection between the tower root and the tower barrel, and the tower barrel forms an assembly structure through the flange ring and the tower root.

[0008] Furthermore, the adjustment seat includes an adjustment shaft and a ratchet pawl, and the adjustment shaft is provided through the center of the adjustment seat, and the ratchet pawl is fixed to the outer side of the adjustment shaft.

[0009] Furthermore, the upper end surface of the support seat is higher than the upper end surface of the flange ring, and the upper end diameter of the support seat is larger than the lower end diameter of the support seat.

[0010] Furthermore, two groups of pistons are slidably connected to both ends of the shock absorbing arm, and a rubber block is slidably connected to the center of the shock absorbing arm, and two groups of supporting springs are fixed to both sides of the rubber block.

[0011] Furthermore, the positions of the first fixing block and the second fixing block correspond to each other, and four groups of the stress detection components and the shock absorbing arms are equidistantly arranged.

[0012] The utility model provides a wind turbine tower, which has the following beneficial effects:

[0013] It can improve the bearing capacity of the tower root, avoid the tearing and breaking of the wind turbine tower root due to the huge swing torque, which is beneficial to improve the stability of the tower, and can visually observe the size and distribution of the stress on the tower root, avoiding the safety hazards caused by the maintenance personnel's inability to make timely judgments when the tower is in an extreme state. The specific contents are as follows:

[0014] By fixing four groups of steel wire ropes equidistantly between the ground and the tower, the stability between the tower and the tower root can be improved. The tension detector installed on the steel wire rope can detect the tension of the steel wire rope, so that maintenance personnel can intuitively observe the stress around the tower. When the tower shakes, the amplitude of the tower vibration is reduced by compressing the support springs and rubber blocks inward, thereby protecting the connection between the tower and the tower root and avoiding the tower from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the wind turbine tower of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the stress detection component of the wind turbine tower of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the wind turbine tower of the utility model when viewed from above;

[0018] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of the shock absorbing arm of the wind turbine tower.

[0019] In the figure: 1. tower root; 2. tower; 3. flange ring; 4. support platform; 5. stress detection assembly; 501. steel cable; 502. adjustment seat; 503. tension detector; 504. fixed seat; 521. adjustment shaft; 522. ratchet pawl; 6. fixing assembly; 601. support seat; 602. first fixing block; 603. second fixing block; 604. shock absorber arm; 641. piston; 642. support spring; 643. rubber block. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] like Figures 1 to 4 As shown, the wind turbine tower comprises a tower root 1, a stress detection assembly 5 and a fixing assembly 6. The tower 2 is bolted to the top of the tower root 1. A flange ring 3 is welded at the connection between the tower root 1 and the tower 2. The tower 2 forms an assembly structure through the flange ring 3 and the tower root 1, which is convenient for carrying the entire tower and thus convenient for transportation. A support platform 4 is fixedly provided on the inner side of the tower 2. The support platform 4 and the tower 2 are welded to increase the stress degree of the cover device, so as to facilitate dispersing the stress of the tower 2 to its surroundings.

[0022] The stress detection assembly 5 is located on the inner side of the tower root 1, and the stress detection assembly 5 includes a steel cable 501, an adjustment seat 502, a tension detector 503 and a fixed seat 504. Four groups of fixed seats 504 are arranged at the edge of the lower end surface of the support platform 4, and the steel cable 501 is connected below the fixed seat 504, and a tension detector 503 is arranged through the center of the steel cable 501. The inner side of the tension detector 503 is a tension sensor, and the model of the tension sensor is DYZL-104, which is used to display the tension of the rope. The side of the steel cable 501 away from the fixed seat 504 is connected to the adjustment seat 502, and the ground and the tower 2 are connected through the steel cable 501, and the tower 2 is connected through the observation Observe the tension change of the steel cable 501, so as to understand the stress change around the tower 2, and avoid the maintenance personnel failing to make a judgment in time when the tower is in an extreme state, thereby posing a potential safety hazard. The adjustment seat 502 includes an adjustment shaft 521 and a ratchet pawl 522, and the adjustment shaft 521 is provided through the center of the adjustment seat 502, and a ratchet pawl 522 is fixed on the outer side of the adjustment shaft 521. The tension of the steel cable 501 is adjusted to a suitable state by rotating the adjustment shaft 521, and the ratchet pawl 522 can lock the steel cable 501, so as to avoid the adjustment shaft 521 rotating due to the force on the steel cable 501, so that the tension of the rope is inaccurate.

[0023] The fixing assembly 6 is located below the tower 2, and the fixing assembly 6 includes a support seat 601, a first fixing block 602, a second fixing block 603, and a shock absorbing arm 604. The support seat 601 is fixed to the outer side of the tower root 1. Because the upper end surface of the support seat 601 is higher than the upper end surface of the flange ring 3, and because the upper end diameter of the support seat 601 is larger than the lower end diameter of the support seat 601, the connection can be sealed, and the stability of the connection between the tower root 1 and the tower 2 is further improved. The support seat 1 is tapered, which can support the tower root 1 and strengthen the strength of the tower root 1. Four groups of first fixing blocks 602 are arranged on the outer side of the tower root 1, and a plurality of groups of second fixing blocks 603 are fixed to the inner side of the support seat 601.

[0024] A shock absorbing arm 604 is fixedly connected between the first fixed block 602 and the second fixed block 603. The shock absorbing arm 604 can improve the bearing capacity of the tower root 1, avoid tearing and breaking at the wind power tower root due to huge swing torque, which is beneficial to improving the stability of the tower. Two groups of pistons 641 are slidably connected at both ends of the shock absorbing arm 604, and a rubber block 643 is slidably connected at the center of the shock absorbing arm 604, and two groups of supporting springs 642 are fixed on both sides of the rubber block 643. When one side of the tower 2 is subjected to force, it is squeezed toward one side to drive the piston 641 to squeeze the supporting spring 642 downward, and transmit the force to the rubber block 643, thereby reducing the resonance amplitude. Because the positions of the first fixed block 602 and the second fixed block 603 correspond, and because the stress detection assembly 5 and the shock absorbing arm 604 are evenly spaced, the four groups of shock absorbing arms 604 are spread outward with the bottom circle as the center, which can make the tower 2 withstand pressure from all sides and improve the stability of the tower 2.

[0025] In summary, when this type of wind turbine tower is used, first, the tower root 1 is fixed to the ground, and the support seat 601 is sleeved on the outside of the tower root 1, and the tower tube 2 is placed above the tower root 1 by a crane. When the worker tightens the fixing bolts at the flange ring 3, the tower root 1 is connected to the tower tube 2, and the remaining tower tubes 2 are connected in the same way. After the installation is completed, the worker enters the inner side of the tower root 1, fixes the upper end of the steel cable 501 on the fixing seat 504 and passes it through the tension detector 503, and winds its lower end around the outside of the adjusting shaft 521, and then rotates the adjusting shaft 521 to shrink the rope inward until it is in a closed position. The four stress detection components 5 are fixed in the appropriate position in the same way. When the stress of the tower 2 changes, the steel cable 501 is stretched. The staff judges the stress of the tower 2 by observing the tension change of the steel cable 501 on the tension detector 503, and repairs it. When a storm or bad weather occurs, the tower 2 shakes, thereby driving the piston 641 to slide inward and compress the support spring 642. The support spring 642 transmits the force to the rubber block 643, thereby reducing the amplitude of the vibration of the tower 2 and the tower root 1, thereby protecting the connection between the tower 2 and the tower root 1 and avoiding the tower from breaking.

Claims

1. A wind turbine tower, comprising a tower root (1), a stress detection component (5) and a fixing component (6), characterized in that: The tower (2) is bolted to the top of the tower root (1), and a support platform (4) is fixedly arranged on the inner side of the tower (2), and the stress detection component (5) is located on the inner side of the tower root (1), and the stress detection component (5) comprises a steel cable (501), an adjustment seat (502), a tension detector (503) and a fixing seat (504), four groups of fixing seats (504) are arranged at the edge of the lower end surface of the support platform (4), and the steel cable (501) is connected to the bottom of the fixing seat (504), and the tension detector (503) is arranged through the center of the steel cable (501), and the side of the steel cable (501) away from the fixing seat (504) is connected to the adjustment seat (502), and the fixing component (6) is located below the tower (2), and the fixing component (6) comprises a support seat (601), a first fixing block (602), a second fixing block (603), a tension detector (503), and a tension detector (504). The invention relates to a shock arm (604), wherein the support seat (601) is fixed on the outer side of the tower root (1), and four groups of the first fixing blocks (602) are arranged on the outer side of the tower root (1), and a plurality of groups of the second fixing blocks (603) are fixed on the inner side of the support seat (601), and the shock absorbing arm (604) is fixedly connected between the first fixing blocks (602) and the second fixing blocks (603); the adjustment seat (502) comprises an adjustment shaft (521) and a ratchet pawl (522), and the adjustment shaft (521) is arranged through the center of the adjustment seat (502), and the ratchet pawl (522) is fixed on the outer side of the adjustment shaft (521); two groups of pistons (641) are slidably connected at both ends of the shock absorbing arm (604), and a rubber block (643) is slidably connected at the center of the shock absorbing arm (604), and two groups of supporting springs (642) are fixed on both sides of the rubber block (643).

2. The wind turbine tower according to claim 1, characterized in that: A flange ring (3) is welded at the connection between the tower root (1) and the tower barrel (2), and the tower barrel (2) forms an assembly structure through the flange ring (3) and the tower root (1).

3. The wind turbine tower according to claim 2, characterized in that: The upper end surface of the support seat (601) is higher than the upper end surface of the flange ring (3), and the upper end diameter of the support seat (601) is greater than the lower end diameter of the support seat (601).

4. The wind turbine tower according to claim 1, characterized in that: The positions of the first fixing block (602) and the second fixing block (603) correspond to each other, and four groups of the stress detection components (5) and the shock absorbing arms (604) are equidistantly arranged.

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