Good news | The first steel frame of the first 1000MW hyperbolic single-layer gridshell air-cooling tower in China was successfully closed
Time：2025-03-31
On March 28, the expansion project of 2×1000MW units of Liupanshan Power Plant, for which Shouhang Hi-Tech was the EPC general contractor, ushered in a key progress - the first-layer steel frame of the No. 1 steel structure intercooler was successfully closed, marking the construction of the first 1000MW hyperbolic single-layer gridshell air-cooling tower in China has entered a substantial node. As an important technical participant in this project, Shouhang Hi-Tech relies on its independently innovative air cooling system technology to provide strong support for the stable commissioning of efficient and clean energy units.
This project is a two-unit steel structure intercooler project for 2×1000MW single-reheat high-efficiency ultra-supercritical indirect air-cooled coal-fired units. The indirect air-cooling system adopts one machine and one tower. The steel tower adopts a hyperbolic single-layer gridshell space structure, and the outer surface of the structure adopts an aluminum alloy skin outer guard plate; the structural design service life is 50 years.
The project adopts "high-efficiency ultra-supercritical" power generation technology, equipped with a "one machine and one tower" configuration, with a total height of 190 meters for a single tower, and the tower body is modularly assembled in 16 layers. Innovatively breaking through the traditional concrete tower model, a hyperbolic single-layer gridshell space structure is adopted, and it is supported by 42 oblique supports as a whole. The total weight of the single tower steel structure is 4,500 tons. The diameter of the tower body changes dynamically with the height. The bottom diameter is 155 meters, the throat narrows to 95 meters, and the top outlet expands to 99.4 meters to form an efficient air circulation system to further optimize the cooling efficiency.
As the core link of the tower foundation, the project team adopted the "3D coordinate positioning + BIM simulation pre-assembly" technology to ensure that the installation error of 42 oblique supports is strictly controlled within the design standard range. For the nearly 460-ton single-layer hoisting unit, the team independently developed a modular hoisting process, and through the "ground segmented welding + high-altitude overall docking" construction mode, the high-altitude work volume was reduced by 60%, the construction efficiency was increased by 35%, and the weld pass rate reached 100%, achieving full life cycle quality control.
With the successful closing of the first-floor steel structure, this new regional landmark has taken shape. Shouhang Hi-Tech will continue to participate deeply in the project construction, give full play to its leading advantages in the field of efficient air cooling technology, build a high-quality steel structure intercooler demonstration project with the "millimeter-level precision control" standard, and contribute more scientific and technological strength to the upgrading of the regional energy industry.
Contact information
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Email：shgk@sh-ihw.com
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Fax：010-52256633
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Add：Building 20,Block 3,188 South 4th Ring W.Rd,Fengtai,Beijing,China
