High-efficiency double-screw compressor main engine

The invention relates to a high-efficiency double-screw compressor main engine suitable for air compressors, and belongs to the technical field of power transmission and control. The high-efficiency double-screw compressor main engine is based on the variable lead technology, a female rotor and a male rotor of the compressor main engine are designed to be multi-lead screw rotor sections meeting the meshing law, the lead of the screw rotor close to the suction end is large, the lead of the screw rotor close to the exhaust end is small, and the female rotor and the male rotor are of a split assembled structure. According to the technical scheme of the high-efficiency double-screw compressor main engine, a larger internal compression ratio can be obtained, the pressure of output gas can be higher, and the efficiency of a compressor can be improved. 本发明涉及种高效能双螺杆压缩机主机，适用于空气压缩机，属于动力传动与控制技术领域。本发明基于变导程技术，它的阴阳转子被设计成符合啮合定律的多导程螺杆转子段，接近吸气端的螺杆转子的导程大，接近排气端的螺杆转子的导程小，为分体组装式结构。种高效能双螺杆压缩机主机可以获得更大的内压缩比，可以使输出的气体的压力更高；可以使压缩机的效率得到