两级喷油螺杆压缩机型线设计与加工技术研究

发布时间：2019-04-27 03:20

【摘要】：螺杆压缩机广泛应用于矿山、冶金、动力、建筑、机械、制冷、化工等工业部门，由于具有噪声和振动低、可靠性高、操作维护方便、动力平衡好、适应性强等特点，在宽广的容量、排压和工况范围内，渐渐大量地替代了其它种类的压缩机。因此，螺杆压缩机的市场空间非常广阔。然而我国对螺杆压缩机的研制主要还处于仿制的阶段，生产出来的产品往往不能够达到理想的使用效果，常会出现排气压力低、功率损耗大、运动不平稳、噪声大、磨损快、寿命短等问题，与国外同类产品相比存在较大差距。并且我国生产的螺杆压缩机往往只涉及中低压机型，有关高压或多级压缩的螺杆压缩机的研究非常少见。这些都大大地限制了相关工业行业的发展。因此，对两级喷油螺杆压缩机的设计及理论研究具有重要意义。本文的主要研究内容如下： ①分析了螺杆压缩机的工作原理及其结构特征，，研究了其型线设计原则和方法，设计出两级的阴、阳螺杆的端面齿形曲线，推导了螺杆螺旋面方程，采用三维CAD软件Pro/E进行三维实体建模，并进行虚拟装配和运动干涉分析，验证设计的正确性。 ②运用啮合原理及微分几何，研究双螺杆压缩机转子的几何特性。根据工作条件及工作情况对主要相关参数进行了选择以及设计计算，计算了压缩机的排气量以及冷却所需的喷油量，并对吸、排气孔口结构进行了设计，对整机的驱动方式及排气量的调节进行了分析。 ③结合空间啮合理论及刀具廓形设计等理论，对螺杆压缩机关键部件——螺杆转子的加工刀具设计进行了深入研究，在研究齿廓型线的基础上设计了螺杆转子的加工刀具及加工方法。
[Abstract]:Screw compressor is widely used in mining, metallurgy, power, construction, machinery, refrigeration, chemical industry and other industrial sectors. Because of its low noise and vibration, high reliability, easy operation and maintenance, good dynamic balance, strong adaptability and other characteristics, the screw compressor is widely used in mining, metallurgy, power, construction, machinery, refrigeration and chemical industry. In a wide range of capacity, displacement and operating conditions, gradually replaced a large number of other types of compressors. Therefore, the market space of screw compressor is very broad. However, the development of screw compressor in our country is still in the imitation stage, the products produced are often not able to achieve the ideal use effect, the exhaust pressure is low, the power loss is large, the motion is not smooth, the noise is big, and the wear is fast. Short life and other problems, compared with the same kind of foreign products, there is a big gap. And the screw compressor produced in our country usually only involves the medium and low pressure type, the research about high pressure or multi-stage compression screw compressor is very rare. These have greatly restricted the development of related industrial industries. Therefore, it is of great significance for the design and theoretical research of two-stage injection screw compressor. The main contents of this paper are as follows: (1) the working principle and structure characteristics of screw compressor are analyzed, and the design principle and method of its profile are studied. The screw spiral surface equation is derived. The 3D solid modeling is carried out by using 3D CAD software Pro/E, and the virtual assembly and motion interference analysis are carried out to verify the correctness of the design. Using the meshing principle and differential geometry, the geometric characteristics of the rotor of twin screw compressor are studied. The main parameters are selected and calculated according to the working conditions and working conditions. The exhaust volume of the compressor and the fuel injection required for cooling are calculated, and the structure of the suction and exhaust orifice is designed. The driving mode of the whole machine and the regulation of exhaust volume are analyzed. 3 based on the theory of space meshing and tool profile design, the machining tool design of screw rotor, the key component of screw compressor, is deeply studied. The machining tool and machining method of screw rotor are designed based on the study of tooth profile.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH45

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