NOVELTY - An ultra-large seawater pipe is installed to communicate the sea floor and the sea surface to take advantage of the pressure difference between the sea floor and the sea surface, wherein a pressure difference of 1 kg/cm2 exists for every 10-meter depth. The outlet of the pipe is inserted into a seawater pump chamber with a water storage tank of the pump chamber being arranged lower than the sea level at maximal ebbing by about 15 meters. Three large electrical variable-frequency water pumping sets are installed in the water storage tank of the pump chamber, wherein each pumping set has a capacity which is 60% of the operation under full load, and during full load, two pumps are operated while one pump is standby. When the large electrical variable-frequency water pumping sets are operated, seawater in the pipe is pumped out, producing pressure difference between the top and bottom portions of the pipe, such that seawater flows upward immediately to form a floating force, resulting in continuous upward flowing water. The floating force is utilized for the installation of series type cyclone power station of this invention. Each cyclone power station is provided with inner and outer channels therein. The inner channel is provided with a vortex power station and a main shut-off valve, and the outer channel is provided with a bypass valve set. When switched on, the main shut-off valve is turned on batchwise, and the bypass valve set is turned off batchwise, so as to gradually increase the water amount flowing through the vortex power station. The starting, acceleration, speed fixing, and parallel power generation of the power stations can be controlled, and other cyclone power stations are switched on according to the top-down starting and bottom-up shutting modes. During initial starting, the variable-frequency water pump is operated at a low speed, and the ascending water flow amount is smaller. After parallel connection of all stations is completed, another large variable-frequency water pump is operated at full speed to largely increase the floating force, such that the output of the whole set is substantially increased. Then, the originally operated variable-frequency water pump is shut off, changed to full speed operation mode and restarted. Two water pumps are fully operated to increase the output of the all power stations and full load operation. To shut off the machine, any one operated variable-frequency water pump is turned off first, during which the output of the whole set is reduced to 50-60%, changed to low speed operation mode and restarted. Another water pump is shut off after water flow is stable, during which the load is reduced to the minimum, and the flow amounting passing through the vortex power station is gradually reduced by batchwise turning off the main shut-off valve, and batchwise turning on the bypass valve set, so as to achieve load reduction, decoupling, and shutting off. The shutting process is operated in a bottom-top manner, gradually switching off the cyclone power stations in series connection, and the water pump is not shut off until the whole set is decoupled and complete shutting down. Since the whole system can be operated by electricity converted from latent heat stored by volcanic eruption, sun radiation, nuclear, thermal power generation waste heat after absorption by seawater, convection between the sea floor and sea surface can balance the temperature, and the system at the rear end of the water pumps can carry out seawater aeration, such that the latent heat in seawater can be dissipated to achieve delayed boiling by circulation. If the station is installed globally and operated in long term to gradually reduce the temperature of seawater, the frozen ice in the North Pole and South Pole can be recovered to its original appearance, completely alleviating the damage of global warming to all organisms.