Energy-saving engine room heat regulation system of high-power wind driven generator

Abstract

The invention relates to an energy-saving engine room heat regulation system of a high-power wind driven generator, which is used for solving the problem of heat regulation of wind driven generators. The heat regulation system consists of a refrigeration circulating system and a liquid cooling circulating system, wherein the refrigeration circulating system is arranged outside the engine room of the generator and is a refrigerant closed loop comprising a compressor, a condenser, a main electromagnetic expansion valve and an evaporator; the liquid cooling circulating system comprises a frequency-conversion control cabinet, a generator, a gearbox, an evaporator and a circulating pump, the frequency-conversion control cabinet, the generator and the gearbox are connected together in parallel and then connected with the evaporator and the circulating pump to form a secondary refrigerant closed loop, and the evaporator is formed by an inner pipe and an outer pipe which are sleeved together; the inner pipe is connected into the refrigeration circulating system; and a cavity between the inner pipe and the outer pipe is connected into the liquid cooling circulating system. The heat regulation system organically combines a refrigerating device and a heating device, has strong cooling capacity and low cooling and heating energy consumption and can guarantee the safe and efficient operation of the high-power wind driven generator.

Description

technical field [0001] The invention relates to a heat allocation system, in particular to a megawatt-level wind power generator cabin heat energy-saving adjustment system capable of ensuring the safe and efficient operation of the wind power generator, and belongs to the technical field of wind power generators. Background technique [0002] Since the advent of modern grid-connected wind turbines in the 1980s, with the development of wind turbine aerodynamics, computer technology, control technology, generator technology and new materials, wind power generation technology has developed very rapidly, and the capacity of a single unit has grown from the initial Tens of kilowatts have developed to the current megawatt level. While the capacity of a single machine increases, the heat dissipation of the wind turbine also increases accordingly. Many components will generate heat during the operation of megawatt units, and the main heat dissipation components are gearboxes, gener...

AI Technical Summary

Problems solved by technology

Traditional heaters generally adopt the method of "heating resistance + fan". The heater has high power and large power consumption, which reduces the efficiency of the entire wind turbine.

[0009] In addition, the cooling system and heating system of existing high-power wind turbines are independent of each other and cannot be deployed uniformly. Sometimes both work at the same time. On the one hand, the cooling system dissipates the heat generated by the gearbox, motor, and control frequency converter outside the engine room. On the other hand, the heating system consumes electric energy to heat the cabin, resulting in a waste of energy

[0010] To sum up, the cooling system of the existing high-power wind turbines is difficult to meet the cooling needs of the next generation of large-capacity wind turbines, and the heating system consumes a lot of energy, and the cooling system and heating system lack unified deployment and control, which cannot ensure wind power generation. In order to ensure the safe and efficient operation of the machine, it is necessary to optimize and improve the current cooling and heating methods

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