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Four-drum fan foundation recovery construction method

A technology of wind turbine foundation and construction method, which is applied in the direction of infrastructure engineering, construction, etc., can solve the problems of high dismantling costs, achieve the effects of short construction period, reduce resistance, and avoid damage

Inactive Publication Date: 2019-08-27
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of dismantling construction and dismantling of offshore wind farms has attracted more and more attention. In 2017, DONG ENERGY dismantled 11 wind turbines at the Vindeby offshore wind farm that had been in operation for more than 25 years. This is also the first offshore wind farm in the world. Wind farm decommissioning, offshore wind farm decommissioning requires the removal of foundations, wind turbines and offshore substations from the sea, which is expensive to remove

Method used

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  • Four-drum fan foundation recovery construction method
  • Four-drum fan foundation recovery construction method
  • Four-drum fan foundation recovery construction method

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Embodiment Construction

[0040] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0041] The invention discloses a four-cylinder fan foundation recycling construction method, which is carried out for the four-cylinder fan foundation after the end of the service period, such as figure 1 and figure 2 As shown, the four-cylinder fan foundation includes a cylindrical foundation 3 composed of four single cylinders arranged in a square, the upper jacket and the fan structure 1 are connected above the cylindrical foundation 3, and the top cover of the cylindrical foundation 3 is provided with a drainage pipe 2 . When the four-cylinder fan foundation is in place, the cylindrical foundation 3 is located in the seabed 4 .

[0042] The four-barrel fan foundation recovery construction method of the present invention is specifically...

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Abstract

the invention belongs to the technical field of offshore wind power foundation recovery and discloses a four-drum fan foundation recovery construction method. The method comprises the steps of injecting water into and pressurizing three drums to allow a whole fan foundation to be inclined to another drum, releasing water pressure of the three drums, repeating the operation to allow the four drumsto be inclined sequentially, injecting the water into and pressurizing the four drums simultaneously to raise the drum foundation, stopping water injection after the drum foundation rises to certain required height from the initial height, inflating the four drums simultaneously to continue raising the drum foundation, after an inflating amount meets a design requirement, waiting the drum foundation to rise to the water surface if the drum foundation continues rising, raising the drum foundation to the water surface through an uplift force of a lifting rope if the drum foundation does not continue rising, and accomplishing recovery work of the four-drum fan foundation. The method achieves integrated recovery of the foundation and a fan, and is high in construction economical efficiency andshort in construction period, and large construction equipment is not required.

Description

technical field [0001] The invention belongs to the technical field of recovery of offshore wind power foundations, and in particular relates to a construction method for recovery of foundations of four-barrel wind turbines. Background technique [0002] Offshore wind power has the characteristics of large wind power, stable wind resources, and nearby consumption of power generation energy. In recent years, offshore wind power has been widely developed. From 2013 to 2017, the new capacity and cumulative capacity of offshore wind turbines in my country showed a trend of gradual expansion. In 2017, 319 new installed capacity were added, and the new installed capacity reached 1.16 million kilowatts, a year-on-year increase of 96.5%, and the cumulative installed capacity reached 2.79 million kilowatts. At present, the design service life of offshore wind power is about 20 years. After the service period is over, the wind power foundation should be demolished and upgraded or eco...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D35/00
CPCE02D27/425E02D35/005
Inventor 张浦阳丁红岩练继建翟汉波
Owner TIANJIN UNIV
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