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喷咀测定法是测量压缩机排气量的主要方法。过去,我厂一直采用一机部化工通用机械专业标准（TH18-59）制造的低压喷咀测量排气量。该喷咀特点是测量准确,但体积大,重量重。特别是我厂目前生产移动螺杆压缩机,由于开车时噪声大,不宜在车间里试车,故喷咀的拆装更加困难。为减轻试车工人的劳动强度,便于在室外试车,我们根据有关资料及一机部（TH18-59）标准制造了高压喷咀。该喷咀的特点是体积小,重量轻,装拆搬运方
Nozzle measurement method is to measure the main method of compressor displacement. In the past, our factory always adopted the low pressure nozzle manufactured by a mechanized general machinery professional standard (TH18-59) to measure the displacement. The nozzle is characterized by accurate measurements, but bulky, heavy weight. In particular, I plant the current production of mobile screw compressor, due to noise when driving, not in the workshop test, it is more difficult to dismantle the nozzle. In order to reduce the labor intensity of the test workers and facilitate the test run outdoors, we manufactured the high-pressure nozzles according to the relevant information and the standard of a machine department (TH18-59). The nozzle is characterized by small size, light weight, removable handling