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一些发动机制造厂业已生产出许多种涡轮增压器,以适应高压比和足以应付恶劣条件的各种增压系统的需要。这些增压系统的特点是排温高、负荷经常变化和要求脉冲增压。考虑到这些特点,为扩大RR涡轮增压器的工作容量,有必要研究一种新型的径流式涡轮。在研制防振型径流式涡轮的过程中,采用了现代实验和分析手段:即用全息摄影确定叶片的自然频率和自然外形(natural modes);用遥测设备测出叶片的动应力和频率;并用有限元素法计算出自然须率、自然外形和应力分布的情况。测量与计算的结果比较表明,上述实验和分析方法是很正确的。1976年夏天以后,根据这种新方法设计制造的涡轮正在进行试运转。
Some engine manufacturers have manufactured many types of turbochargers to meet the high pressure ratio and the need for a variety of booster systems that are capable of handling the harsh conditions. These booster systems are characterized by high exhaust temperatures, frequent load changes and pulsed pressurization. Taking these characteristics into account, it is necessary to study a new type of radial turbine in order to expand the working capacity of the RR turbocharger. In the development of anti-vibration type radial turbine, the use of modern experimental and analytical tools: the holographic photography to determine the blade natural frequency and natural form (natural modes); measured with telemetry blade dynamic stress and frequency; and use Finite element method to calculate the natural rate, natural shape and stress distribution. Comparison of measurement and calculation results show that the above experimental and analytical methods are correct. After the summer of 1976, turbines designed and built according to this new method were undergoing commissioning.