An offshore wind power foundation device with nonlinear earthquake resistance function

Abstract

The present invention relates to the technical field of offshore wind power engineering, and in particular to an offshore wind power foundation device with nonlinear earthquake resistance function, comprising: an installation base, a transition section, a foundation frame, a cement column, a suction cylinder, a transition tower, a first shock-absorbing component, and a second shock-absorbing component. The transition tower is connected to the installation base through the second shock-absorbing component, so as to solve the problem that the cement column and the suction cylinder are fixedly connected by welding or bolts, which may easily lead to loosening of the bolt connection under the influence of an earthquake, which may cause safety accidents, and may easily cause the overall structure to shake or vibrate, thereby affecting the normal operation of the wind power generation equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power engineering, and in particular to an offshore wind power foundation device with nonlinear earthquake resistance function. Background Art

[0002] With the continuous development and progress of offshore wind power technology, a large number of wind turbine foundation types have emerged, but high pile caps are still the main type of lower foundation for offshore wind turbines in my country's soft soil cover sites. The wind turbine transition section tower and pile foundation of the high pile cap foundation are generally connected by steel connectors, which ensures good structural integrity and stability, strengthens the structural integrity and effectively improves the stress condition of the reinforced concrete cap.

[0003] At present, the commonly used foundation forms include gravity foundation, single pile foundation, jacket foundation and suction tube foundation. Compared with the traditional foundation forms, the suction tube foundation does not require seabed preparation; the construction is more convenient and the window period is short, which can effectively shorten the construction period. It has been rapidly developed in recent years and has been used in many domestic offshore wind farms.

[0004] The cement column and the suction cylinder are connected by welding or bolts. Under the influence of an earthquake, the bolted joints may become loose, which may cause safety accidents and may cause the overall structure to shake or vibrate, affecting the normal operation of the wind power generation equipment. Summary of the invention

[0005] The purpose of the present invention is to provide an offshore wind power foundation device with nonlinear seismic resistance function, so as to solve the problem that the cement column and the suction cylinder are fixedly connected by welding or bolts, which may easily lead to loosening of the bolted joints under the influence of earthquakes, which may cause safety accidents, and easily cause the overall structure to shake or vibrate, thereby affecting the normal operation of the wind power generation equipment.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An offshore wind power foundation device with nonlinear earthquake resistance function, comprising:

[0008] A mounting base, wherein the mounting base is arranged horizontally;

[0009] A transition section, wherein a plurality of transition sections are provided and all are arranged at the lower end of the mounting base, and are used to support the mounting base;

[0010] A basic frame, wherein the plurality of transition sections are arranged on the basic frame;

[0011] There are four cement columns, which are respectively arranged at the four corners of the basic frame;

[0012] Suction cylinders, wherein four suction cylinders are provided and are respectively connected to four cement columns;

[0013] A transition tower is vertically arranged at the upper end of the mounting base, and the top of the transition tower is used to mount the fan;

[0014] There are four first shock absorbing members, which are respectively arranged between the cement column and the suction cylinder; and

[0015] A second shock absorbing member, wherein the transition tower is connected to the mounting base via the second shock absorbing member.

[0016] A further technical solution is that a groove is provided at the top of the suction cylinder, the first shock-absorbing member is arranged in the groove, the first shock-absorbing member includes two partitions spaced apart and fixedly arranged on the bottom of the groove, the two partitions are provided with a vertical and transparent first channel on opposite sides, the upper ends of the two partitions are connected by a load-bearing plate for connecting to a cement column, both sides of the load-bearing plate are vertically connected with vertical plates, and the two vertical plates are respectively arranged on the sides of the two partitions away from each other, the two vertical plates are provided with a transparent second channel on the opposite side, and the two A main load-bearing shaft is arranged horizontally between the two partitions, and two ends of the main load-bearing shaft pass through the first channel respectively and are slidably arranged in the second channel. Two dampers arranged at intervals are fixedly arranged between the two partitions and on the main load-bearing shaft, and the upper end of the damper is fixedly connected to the lower end of the load-bearing plate. Secondary load-bearing shafts are arranged on both sides of the main load-bearing shaft, and the two ends of the two secondary load-bearing shafts are fixedly connected to the two partitions respectively, and two first compression springs arranged at intervals are arranged on the two secondary load-bearing shafts, and the upper end of the first compression spring is fixedly connected to the lower end of the load-bearing plate.

[0017] A further technical solution is that a scale line is provided at the opening of the second channel.

[0018] A further technical solution is that a mounting groove for accommodating the second shock absorber is provided in the middle portion of the mounting base, the second shock absorber includes a chassis fixedly arranged at the bottom of the mounting groove, a limit plate arranged at the upper end of the chassis and an upper cover arranged at the upper end of the limit plate, the upper cover, the limit plate and the chassis are respectively provided with four first limit channels, second limit channels and third limit channels which are arranged corresponding to each other up and down, the first limit channel, the second limit channel and the third limit channel form an installation cavity, a second compression spring is arranged in the installation cavity, the lower end of the chassis and the upper end of the upper cover are both provided with an arc-shaped baffle for limiting the second compression spring from detaching from the installation cavity, four arc-shaped notches are provided on the side of the limit plate, a plurality of limit columns are provided in the arc-shaped notches, the upper and lower ends of the limit columns are respectively connected to the upper cover and the chassis, and the lower end of the transition tower rotates through the upper cover and is fixedly connected to the middle portion of the limit plate.

[0019] A further technical solution is that a climbing frame is provided on the basic frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the entire device is installed, the cement column is connected to the suction cylinder through the first shock-absorbing component, so as to facilitate shock-absorbing treatment of the force applied to the cement column in the vertical direction. The transition tower tube is connected to the installation base through the second shock-absorbing component, so as to facilitate shock-absorbing treatment of the force applied to the transition tower in the horizontal direction, so that the entire device has a good earthquake-resistant effect. At the same time, the first shock-absorbing component and the second shock-absorbing component can effectively reduce the shaking or vibration of the entire device during an earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an offshore wind power foundation device with nonlinear earthquake resistance function according to the present invention.

[0023] Figure 2 It is a schematic structural diagram of the first shock absorbing component in the present invention.

[0024] Figure 3 It is a schematic structural diagram of the second shock absorbing member in the present invention.

[0025] Icons: 1-installation base, 2-transition section, 3-foundation frame, 4-transition tower, 5-partition, 6-load-bearing plate, 7-vertical plate, 8-main load-bearing shaft, 9-damper, 10-second load-bearing shaft, 11-first compression spring, 12-scale line, 13-chassis, 14-limiting plate, 15-upper cover, 16-first limiting channel, 17-second limiting channel, 18-third limiting channel, 19-second compression spring, 20-arc baffle, 21-arc notch, 22-limiting column, 23-crawling frame, 24-cement column, 25-suction cylinder, 26-groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] Embodiment 1:

[0028] Figure 1-3 A preferred embodiment of an offshore wind power foundation device with nonlinear earthquake resistance function of the present invention is shown. In this embodiment, an offshore wind power foundation device with nonlinear earthquake resistance function specifically includes:

[0029] An installation base 1, wherein the installation base 1 is arranged horizontally;

[0030] A transition section 2, wherein a plurality of transition sections 2 are provided and all are arranged at the lower end of the mounting base 1, and are used to support the mounting base 1;

[0031] A basic frame 3, on which the plurality of transition sections 2 are arranged;

[0032] There are four cement columns 24, which are respectively arranged at the four corners of the basic frame 3;

[0033] Suction cylinders 25, wherein four suction cylinders 25 are provided and are respectively connected to four cement columns 24;

[0034] A transition tower 4 is vertically arranged at the upper end of the mounting base 1, and the top of the transition tower 4 is used to mount the fan;

[0035] There are four first shock absorbing members, which are respectively arranged between the cement column 24 and the suction cylinder 25; and

[0036] A second shock absorbing member, wherein the transition tower 4 is connected to the mounting base 1 via the second shock absorbing member.

[0037] In the present invention, when the entire device is installed, the cement column 24 is connected to the suction cylinder 25 through the first shock-absorbing component, so as to facilitate shock-absorbing treatment of the force applied to the cement column 24 in the vertical direction, and the transition tower 4 is connected to the installation base 1 through the second shock-absorbing component, so as to facilitate shock-absorbing treatment of the force applied to the transition tower in the horizontal direction, so that the entire device has a good earthquake-resistant effect, and at the same time, the first shock-absorbing component and the second shock-absorbing component can effectively reduce the shaking or vibration of the entire device during an earthquake, while ensuring the connection stability of the transition section 2 and the installation base 1.

[0038] In the present invention, the traditional suction cylinder 25 foundation is upgraded and improved, and four new suction cylinder 25 foundations are proposed to jointly support the base frame 3, which can provide a more stable bearing capacity for the base frame 3 and has the function of preventing the base frame 3 from being washed by sea water.

[0039] Specifically, a groove 26 is provided at the top of the suction cylinder 25, and the first shock-absorbing member is arranged in the groove 26. The first shock-absorbing member includes two partitions 5 that are spaced and fixedly arranged at the bottom of the groove 26. The two partitions 5 are provided with vertical and transparent first channels on opposite sides. The upper ends of the two partitions 5 are connected by a load-bearing plate 6 for connecting to a cement column. Both sides of the load-bearing plate 6 are vertically connected with vertical plates 7, and the two vertical plates 7 are respectively arranged on the sides of the two partitions 5 away from each other. The two vertical plates 7 are provided with a transparent second channel on the opposite side. 5 is provided with a main load-bearing shaft 8 which is arranged horizontally, and both ends of the main load-bearing shaft 8 respectively pass through the first channel and are slidably arranged in the second channel. Two dampers 9 which are arranged at intervals are fixedly provided between the two partitions 5 and on the main load-bearing shaft 8, and the upper end of the damper 9 is fixedly connected to the lower end of the load-bearing plate 6. Secondary load-bearing shafts 10 are provided on both sides of the main load-bearing shaft 8, and the two ends of the two secondary load-bearing shafts 10 are fixedly connected to the two partitions 5 respectively, and two first compression springs 11 which are arranged at intervals are provided on the two secondary load-bearing shafts 10, and the upper end of the first compression spring 11 is fixedly connected to the lower end of the load-bearing plate 6.

[0040] The upper end of the load-bearing plate 6 is connected to the concrete column 24. When an earthquake occurs, the damper 9 is used to effectively slow down the relative displacement between the load-bearing plate 6 and the concrete column 24. At the same time, the load-bearing plate 6 is supported by the first compression spring 11. When the entire device vibrates, the first compression spring 11 and the damper 9 are used together to have an obvious anti-seismic and shock-absorbing effect, that is, the damper 9 is used to prevent the load-bearing plate 6 and the concrete column 24 from vibrating violently. At the same time, the two ends of the main load-bearing shaft 8 are respectively slidably set in the second channel, and the opening height of the second channel is set, thereby realizing the limitation of the displacement of the load-bearing plate 6 that can vibrate up and down. At the same time, the main load-bearing shaft 8 is set in the second channel, which further prevents the load-bearing plate from vibrating violently when it is supported by the first compression spring 11.

[0041] The damper 9 is provided to effectively reduce the vibration amplitude of the entire device caused by the earthquake, thereby reducing the adverse effects of the earthquake on the wind power generation facilities.

[0042] Implementation 2:

[0043] The opening of the second channel is provided with a scale line 12, which is convenient for personnel to observe the weight of each position of the entire device after installation.

[0044] Implementation 3:

[0045] The middle part of the mounting base 1 is provided with a mounting groove for accommodating the second shock absorbing member, and the second shock absorbing member includes a chassis 13 fixedly arranged at the bottom of the mounting groove, a limiting plate 14 arranged at the upper end of the chassis 13, and an upper cover 15 arranged at the upper end of the limiting plate 14, and the upper cover 15, the limiting plate 14 and the chassis 13 are respectively provided with four first limiting channels 16, second limiting channels 17 and third limiting channels 18 which are arranged correspondingly up and down. The first limiting channels 16, the second limiting channels 17 and the third limiting channels 18 are respectively provided with four first limiting channels 16, the second limiting channels 17 and the third limiting channels 18 which are arranged correspondingly up and down. 8 forms an installation cavity, in which a second compression spring 19 is arranged, the lower end of the chassis 13 and the upper end of the upper cover 15 are both provided with an arc-shaped baffle 20 for limiting the second compression spring 19 from escaping from the installation cavity, the side of the limit plate 14 is provided with four arc-shaped notches 21, and a plurality of limit columns 22 are arranged in the arc-shaped notches 21, and the upper and lower ends of the limit columns 22 are respectively connected to the upper cover 15 and the chassis 13, and the lower end of the transition tower 4 rotates through the upper cover 15 and is fixedly connected to the middle part of the limit plate 14.

[0046] When the transition tower 4 is subjected to horizontal force, it will drive the limit plate 14 to rotate, and squeeze the second compression spring 19 through the arc-shaped notch 21 on the limit plate 14. The rotation tendency of the limit plate 14 is effectively slowed down during the squeezing of the second compression spring 19. The compressed second compression spring 19 generates torsional damping to alleviate the rotation tendency of the limit plate 14 and the transition tower 4. The setting of multiple limit columns 22 facilitates the limitation of the rotation angle of the limit plate 14 to avoid excessive rotation angle of the transition tower 4, which causes vibration of the overall structure and reduces the stability of the overall structure.

[0047] The basic frame 3 is provided with a climbing frame 23, which is convenient for installation and maintenance personnel to climb, and a cement column 24 is provided at the lower end of the basic frame 3, which is used to increase the stability of the overall structure.

[0048] In the present invention, the base frame 3 and the transition section 2 are integrally arranged.

[0049] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An offshore wind power foundation device with nonlinear earthquake resistance function, characterized in that: include: A mounting base, wherein the mounting base is arranged horizontally; A transition section, wherein a plurality of transition sections are provided and all are arranged at the lower end of the mounting base, and are used to support the mounting base; A basic frame, wherein the plurality of transition sections are arranged on the basic frame; There are four cement columns, which are respectively arranged at the four corners of the basic frame; Suction cylinders, wherein four suction cylinders are provided and are respectively connected to four cement columns; A transition tower is vertically arranged at the upper end of the mounting base, and the top of the transition tower is used to mount the fan; There are four first shock absorbing members, which are respectively arranged between the cement column and the suction cylinder; and The second shock-absorbing member, the transition tower is connected to the mounting base through the second shock-absorbing member; a groove is provided on the top of the suction cylinder, the first shock-absorbing member is arranged in the groove, the first shock-absorbing member includes two partitions spaced and fixedly arranged on the bottom of the groove, the two partitions are provided with a vertical and transparent first channel on opposite sides, the upper ends of the two partitions are connected through a load-bearing plate for connecting to a cement column, both sides of the load-bearing plate are vertically connected with vertical plates, and the two vertical plates are respectively arranged on the side of the two partitions away from each other, and the two vertical plates are provided with a transparent first channel on the opposite side. A second channel is arranged in the structure, a main load-bearing shaft arranged transversely is provided between the two partitions, two ends of the main load-bearing shaft respectively pass through the first channel and are slidably arranged in the second channel, two dampers arranged at intervals are fixedly provided between the two partitions and on the main load-bearing shaft, the upper end of the damper is fixedly connected to the lower end of the load-bearing plate, secondary load-bearing shafts are provided on both sides of the main load-bearing shaft, the two ends of the two secondary load-bearing shafts are respectively fixedly connected to the two partitions, and two first compression springs arranged at intervals are provided on the two secondary load-bearing shafts, and the upper end of the first compression spring is fixedly connected to the lower end of the load-bearing plate.

2. The offshore wind power foundation device with nonlinear earthquake resistance function according to claim 1, characterized in that: A scale line is arranged at the opening of the second channel.

3. The offshore wind power foundation device with nonlinear earthquake resistance function according to claim 1, characterized in that: The middle part of the mounting base is provided with a mounting groove for accommodating the second shock absorber, the second shock absorber comprises a chassis fixedly arranged at the bottom of the mounting groove, a limit plate arranged at the upper end of the chassis and an upper cover arranged at the upper end of the limit plate, the upper cover, the limit plate and the chassis are respectively provided with four first limit channels, second limit channels and third limit channels which are arranged corresponding to each other up and down, the first limit channel, the second limit channel and the third limit channel form an mounting cavity, a second compression spring is arranged in the mounting cavity, the lower end of the chassis and the upper end of the upper cover are both provided with an arc-shaped baffle for limiting the second compression spring from detaching from the mounting cavity, the side of the limit plate is provided with four arc-shaped notches, a plurality of limit columns are provided in the arc-shaped notches, the upper and lower ends of the limit columns are respectively connected to the upper cover and the chassis, and the lower end of the transition tower rotates through the upper cover and is fixedly connected to the middle part of the limit plate.

4. The offshore wind power foundation device with nonlinear earthquake resistance function according to claim 1, characterized in that: A climbing frame is arranged on the basic frame.

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