High-load thrust sliding bearing capable of adjusting thermal deformation through self feedback

Abstract

The invention discloses a high-load thrust sliding bearing capable of adjusting thermal deformation through self feedback. The high-load thrust sliding bearing capable of adjusting thermal deformationthrough self feedback comprises a rotor, an axial positioning base, a thrust disc, bearing pads, bearing fulcrums, a fixed base, an oil retaining ring and the like. The thrust disc is connected withthe axial positioning base axially fixed on the rotor, and is opposite to the bearing pads, a bearing gap is reserved in the middle, each bearing fulcrum is arranged in the middle of the bottom of thecorresponding bearing pad, each bearing pad can rotate around the corresponding bearing fulcrum in a small range, and circumferential oil holes and longitudinal oil holes which communicate with eachother are formed in each bearing pad. According to the high-load thrust sliding bearing capable of adjusting thermal deformation through self feedback, by guiding bearing hot oil to the back surfacesof the bearing pads, the upper surface temperature and the lower surface temperature of the bearing pads tend to be consistent, the thermal deformation counteracts each other, the warping deformationof the bearing pads is reduced, and the bearing capacity and the safety of the bearing are improved.

Description

technical field [0001] The invention belongs to the field of mechanically designed sliding bearings, and in particular relates to a high-load thrust sliding bearing capable of self-feedback regulating thermal deformation. Background technique [0002] Sliding bearings are key components of large and heavy-duty industrial equipment such as water turbines and compressors, and their performance is closely related to the stability of the equipment. Sliding bearings will generate a lot of heat due to shearing and extrusion during operation. For large thrust sliding bearings, especially under high load conditions, the temperature of the bearing oil film is very high, and the temperature distribution of the bearing pads will also be significantly uneven , the local temperature on one side may be as high as 100 °C or more, and the temperature on the corresponding side is only about 40 °C. The significant temperature difference leads to uneven thermal expansion of the bearing, and t...

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Problems solved by technology

[0003] At present, there is no good solution in the industry. In order to reduce the thermal deformation of the bearing as much as possible, the size of the bearing will be considered in the design stage so that it still has sufficient carrying capacity after thermal deformation occurs. However, this approach It will lead to oversized bearings, increased friction, significantly increased equipment loss and operating costs, and has great limitations in industrial applications

How to overcome the thermal deformation of large thrust bearings has become the key to limiting the performance improvement of large industrial rotor equipment

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