水电能源科学

为提高推力轴承瓦在运行过程中的过热问题，提出了一种SK新型材料的推力轴承瓦。采用模型试验方式模拟了传统的巴氏合金瓦与SK瓦在电站中的运行工况，对比分析了SK新型材料的推力轴承瓦与传统的巴氏合金瓦在运行过程中的受力、油膜温度、瓦体温度。结果表明，巴氏合金瓦和SK瓦在受力状态上均表现良好，受力比区间分别为0.95～1.04、0.92～1.09,证明两种材料均能稳定运行；在油膜温度方面，巴氏合金瓦的油膜温度相较于SK瓦高出约10℃,SK瓦的油膜温度更低；在瓦体温度方面，巴氏合金瓦的瓦体温度比SK瓦高约23℃。此外，SK瓦在隔热方面表现出更优越的性能，能够在相同的进油温度下提供更低的油膜和瓦体温度，从而提升瓦体的运行稳定性和寿命。

To address the issue of overheating in thrust bearing pads during operation, a novel SK material thrust bearing pad was developed. Model tests were conducted to simulate the operating conditions of conventional Babbitt alloy pads and the novel SK pads in hydropower plants. The comparative analysis focused on the operational stress, oil film temperature, and pad temperature of both the novel SK thrust bearing pad and the traditional Babbitt alloy pad. The results indicate that both the Babbitt alloy pad and the SK pad exhibit favorable stress performance, with stress ratio ranges of 0.95-1.04 and 0.92-1.09, respectively, demonstrating stable operation for both materials. In terms of oil film temperature, the Babbitt alloy pad exhibited an oil film temperature approximately 10°C higher than that of the SK pad, while the pad temperature of the Babbitt alloy pad was about 23°C higher than that of the SK pad. The novel SK pad demonstrates superior thermal insulation performance, maintaining lower oil film and pad temperatures under identical oil inlet conditions, thereby enhancing the operational stability and service life of the bearing pad.