blade tip clearance

简明释义

叶顶间隙

英英释义

例句

1.The design specifications require a blade tip clearance of no more than 0.5 mm.

设计规范要求叶尖间隙不得超过0.5毫米。

2.A small blade tip clearance can lead to increased efficiency in jet engines.

较小的叶尖间隙可以提高喷气发动机的效率。

3.During maintenance, we found that the blade tip clearance had increased beyond acceptable limits.

在维护期间，我们发现叶尖间隙已超过可接受的极限。

4.The engineer measured the blade tip clearance to ensure optimal performance of the turbine.

工程师测量了叶尖间隙以确保涡轮的最佳性能。

5.Adjusting the blade tip clearance is crucial for preventing engine stall.

调整叶尖间隙对防止发动机失速至关重要。

作文

In the field of engineering, particularly in aerodynamics and mechanical design, understanding the concept of blade tip clearance is crucial for optimizing performance and efficiency. The term blade tip clearance refers to the small gap between the tips of rotating blades, such as those found in turbines or fans, and the casing or surrounding structures. This clearance is not merely a trivial measurement; it plays a significant role in the overall functionality and effectiveness of the machinery. To begin with, maintaining an appropriate blade tip clearance is essential for minimizing unwanted friction and wear. When the clearance is too small, the blades may come into contact with the casing, leading to excessive heat generation and potential damage. Conversely, if the clearance is too large, it can result in reduced aerodynamic efficiency, as the airflow around the blades becomes less controlled. Therefore, engineers must carefully calculate the optimal blade tip clearance to achieve a balance between performance and durability.Moreover, the blade tip clearance has a direct impact on the performance characteristics of a turbine or fan. For instance, in jet engines, a well-designed blade tip clearance can enhance thrust and fuel efficiency. If the clearance is optimized, the engine can operate at higher speeds and pressures, delivering better performance. On the other hand, improper clearance can lead to a phenomenon known as 'tip leakage,' where air escapes from the tips of the blades, resulting in a loss of efficiency and increased fuel consumption.In addition to performance, safety is another critical aspect influenced by blade tip clearance. In industrial applications, such as power generation, any malfunction related to blade clearance can have catastrophic consequences. For example, a failure to maintain the correct blade tip clearance in a gas turbine can lead to blade failure, which may cause severe damage to the turbine and pose risks to personnel and equipment. Therefore, regular maintenance and monitoring of blade tip clearance are vital to ensure the safe operation of these machines.Furthermore, advancements in technology have allowed for more precise measurements and adjustments of blade tip clearance. Modern sensors and control systems can continuously monitor the clearance in real-time, enabling engineers to make immediate adjustments as necessary. This technological progress not only enhances performance but also extends the lifespan of the machinery by preventing excessive wear and tear.In conclusion, the concept of blade tip clearance is a fundamental element in the design and operation of rotating machinery. It affects performance, efficiency, and safety, making it imperative for engineers to understand and optimize this parameter. As technology continues to evolve, the ability to accurately measure and adjust blade tip clearance will undoubtedly lead to even greater advancements in the field, ensuring that machinery operates at peak performance while minimizing risks and maintenance costs.

在工程领域，特别是在气动学和机械设计中，理解叶片尖端间隙的概念对于优化性能和效率至关重要。术语叶片尖端间隙指的是旋转叶片（如涡轮或风扇中的叶片）尖端与外壳或周围结构之间的小间隙。这个间隙不仅仅是一个微不足道的测量，它在整个机器的功能和有效性中发挥着重要作用。首先，保持适当的叶片尖端间隙对于最小化不必要的摩擦和磨损至关重要。当间隙过小时，叶片可能会与外壳接触，从而导致过度发热和潜在损坏。相反，如果间隙过大，则可能导致气动效率降低，因为气流在叶片周围的控制变得不那么理想。因此，工程师必须仔细计算最佳的叶片尖端间隙以实现性能和耐用性之间的平衡。此外，叶片尖端间隙对涡轮或风扇的性能特性有直接影响。例如，在喷气发动机中，设计良好的叶片尖端间隙可以提高推力和燃油效率。如果间隙得到优化，发动机可以在更高的速度和压力下运行，从而提供更好的性能。另一方面，不当的间隙可能导致一种现象，即“尖端泄漏”，空气从叶片的尖端逸出，导致效率损失和燃油消耗增加。除了性能，安全性也是受叶片尖端间隙影响的另一个关键方面。在工业应用中，例如发电，任何与叶片间隙相关的故障都可能产生灾难性的后果。例如，如果未能维持燃气涡轮的正确叶片尖端间隙，可能导致叶片失效，这可能对涡轮造成严重损害，并对人员和设备构成风险。因此，定期维护和监测叶片尖端间隙对于确保这些机器的安全运行至关重要。此外，技术的进步使得对叶片尖端间隙进行更精确的测量和调整成为可能。现代传感器和控制系统可以实时持续监测间隙，使工程师能够根据需要立即进行调整。这一技术进步不仅提高了性能，还通过防止过度磨损来延长机器的使用寿命。总之，叶片尖端间隙的概念是旋转机械设计和运行中的基本元素。它影响性能、效率和安全性，使得工程师必须理解并优化这一参数。随着技术的不断发展，准确测量和调整叶片尖端间隙的能力无疑将导致该领域的更大进步，确保机器在高效运行的同时，最大限度地减少风险和维护成本。