Sliding bearing cooled and lubricated by gas-liquid phase fluid

Abstract

The invention provides a sliding bearing cooled and lubricated by gas-liquid phase fluid. The sliding bearing comprises an upper bearing seat, a lower bearing seat, and a top bearing shell and a bottom bearing shell, which are respectively installed in the upper bearing seat and the lower bearing seat, wherein a main lubrication oil inlet is arranged on the upper bearing seat, a main lubricating nozzle is installed at the main lubrication oil inlet, and a main lubrication oil outlet is arranged on the top bearing shell; and a main cooling gas inlet is arranged on the upper bearing seat, a maincooling nozzle is installed at the main cooling gas inlet, a main cooling gas outlet is arranged on the top bearing shell, and a cooling gas flow passage channel is arranged on the inner wall of thetop bearing shell. Cooled by high-speed oil gas in a non-bearing area, the sliding bearing greatly improves the heat transfer capacity of the entire system, thereby greatly reducing the temperature rise value of the bearing. As high-speed air at the cooling nozzle contains low-speed lubrication oil, after being sprayed into the non-bearing area, the lubrication oil can adhere to a main shaft and is led into a bearing area by the high-speed rotating main shaft, thereby playing the role of oil supply.

Description

(1) Technical field [0001] The invention relates to a sliding bearing. (2) Background technology [0002] The performance indicators for measuring sliding bearings include bearing capacity and bearing temperature rise. For traditional sliding bearings, a dynamic pressure oil film is formed in the converging section, which plays a load-bearing role for the bearing, and cavitation occurs in the expanding section, and the pressure is close to the cavitation pressure. If the working bearing is regarded as a thermal system, the heat generated by the frictional force in the system is mainly transferred to the outside world by the flow of lubricating oil and the heat conduction between the bearing bush and the outside world. The heat brought in by the lubricating oil + the heat generated by the friction of the system = the heat taken out by the lubricating oil + the heat radiated from the bearing bush to the outside. [0003] Therefore, in traditional sliding bearings, the coolin...

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Problems solved by technology

In rolling bearings, the heating area is the contact point between the ball and the inner and outer rings, and other spaces are non-heating areas, and these non-heating areas provide enough space for convective heat exchange of air, but in the traditional sliding bearing structure, the bearing load The narrow space between the bearing zone and the non-load bearing zone hinders the flow of cooling gas, making the heat transfer efficiency of the bearing low, even lower than that of traditional oil lubrication heat transfer

Therefore, the application of gas-liquid two-phase fluid lubrication to traditional sliding bearings has not achieved

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