A Variable Lubrication Intelligent Thrust Bearing System
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A thrust bearing and variable technology, which is applied in the fields of large gearboxes, hydroelectric units, and nuclear power main pumps, can solve the problems that the bearings cannot meet the requirements of intelligent bearings and the safety factor is reduced.
Active Publication Date: 2020-06-30
DALIAN SANHUAN COMPOSITE MATERIAL TECH DEV +1
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Problems solved by technology
Therefore, the above two types of bearings cannot meet the requirements for the use of smart bearings, and the use of smart bearings will obviously bring about the consequence of reducing the safety factor.
Method used
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Embodiment 1
[0079] Building a standard, benchmarking
[0080] The thrust bearing testing machine simulates the operation test of the hydropower station, and verifies the establishment and benchmarking of the intelligent bearing system.
[0081]
[0082] Building standards and benchmarking diagrams
[0083] The construction standard simulates the operating conditions of a hydropower station with a speed of 600r / min, a load of 4.0MPa, an operating oil inlet temperature of 36°C, an oil film temperature of 67°C, and a water flow rate of 55m 3 / h, and it is in a stable state; increase the lubricating oil temperature to 40°C, and it is in a stable state.
[0084] For benchmarking, when the lubricating oil is in a stable state, the oil film temperature is 70°C, the oil film thickness is 0.072mm, and the water flow rate is 1.4m 3 / h.
Embodiment 2
[0086] green and yellow run
[0087] The temperature of the oil film is controlled at 70±2°C, and the related factors of the simulation change, such as adjusting the speed to increase the temperature of the oil film, and the cooling water control starts to work. The accumulative simulation is 12 hours, and the speed is adjusted every 20 minutes. The temperature of the oil film is controlled within the standard range. The temperature is basically stable, and the temperature of the oil tank is slightly lowered. As shown below:
[0088]
[0089] The yellow operation is divided into two stages. In the first stage, the oil film temperature is operated according to the standard of 70°C to 75°C, and the oil film thickness is reduced from 0.072mm to 0.042mm; the second stage of the load reduction operation starts when the oil film temperature is above 75°C, as shown in the figure below .
[0090]
[0091] Based on the existing technology, the present invention is equipped with...
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Abstract
The invention provides a variable lubricating intelligent thrust bearing system which comprises the components of an SK composite tile, a bearing information acquisition unit, a correlation information acquisition unit, and a communication unit which transmits the thrust bearing state information and realizes a communication function between parts of the system; a standard establishing and standard comparing unit which performs standard establishing and standard comparing on operation state information and associated information of the thrust bearing; an intelligent power generating unit whichestablishes a system standard according to the standard establishing unit, performs variable lubrication control on the oil film temperature of the thrust bearing and the oil film thickness and realizes intelligent power generation of the set; and a database which performs structural storage of operation state information, association information and control data of the thrust bearing. Accordingto the variable lubricating intelligent thrust bearing system, bearing operation information and hydropower station association information are combined for preparing an individualized new standard ofthe set; and safe and high-efficiency energy-saving intelligent power generation is realized through performing variable lubricating control on the oil film temperature and the oil temperature thickness of the thrust bearing; mass data are used for establishing an intelligent bearing system diversified data platform, thereby realizing intelligent diagnosis, state maintaining, stock reduction, cost reduction and effect improvement.
Description
technical field [0001] The invention relates to the technical fields of hydropower units, nuclear power main pumps and large gearboxes, and in particular relates to a variable lubricating intelligent thrust bearing system. Background technique [0002] my country is rich in water energy resources. Thrust bearings-metal-plastic tiles have been used in hydroelectric generator sets since the 1980s. After decades of application, the reliability of metal-plastic tiles has been widely recognized. Metal-plastic tile is a new type of high-performance resin-metal composite bearing. Its product performance is superior, which improves the safe operation of the bearing. It is widely used in hydropower equipment, mill gearboxes, metallurgical equipment, military and other industries. [0003] As a key component of the unit, the thrust bearing of the hydro-generator set is called the heart of the mechanical part of the unit. Its operating state directly affects the safety, reliability and...
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