Horizontal turbine group of the turbine bearing leakage and bearing grinding the poor condition of the processing solution 1. Leakage causes

    (1) fixed parts of the seal wool felt circle and the journal of the moving parts of the junction is easy to form a gap, so that oil gap can be drilled to the formation of oil spills. Wool felt circle bearings at both ends of the cover seal has a sealing elastic, high-speed rotation of the spindle, the greater flexibility of seal wool felt circle seal, the higher the temperature generated by friction with the spindle, the more likely to make felted wool circles aging and loss of elasticity. Unit in operation, the spindle has a certain swing amount, so the loss of elasticity of wool felt circle with the journal to form a fixed gap, without loss of elasticity or complete loss of elasticity of wool felt circle with the journal will form transient gap , so that oil gap can be drilled. Due to the gap amount executions in the swing amount of the spindle, the bearing assembly with the clearance with the improper failure to measure this is the current leakage of the presence or absence, and a difference in the extent of the important reasons.

    (2) the existence of oil spills: oil spill a major source of high-speed movement of the lubricant in the bearing body in the air to drive the air into the oil and oil bubbles formed, and the elevation of the oil bubble beyond the gap can stick the gap elevation ( unit operation to the maximum allowed oil level design bearings at both ends of wool felt covered under the ring).

    The secondary source of oil spills are small thrust plate at the discharge of oil spray arc, just landed near the spindle seals the spindle neck, and, in fact, is also a radial thrust bearing than the radial bearing lubricants, oil bubble storey much, and the thrust plate discharges of oil, namely, radial thrust bearing and the difference between radial bearings radial thrust bearing there is a spill the source. This is the fundamental causes of the leakage of the radial thrust bearing.

2. The formation of the oil bubble technology solve the leakage

    Air bearing effects in the DLP optical engine according to the above comparative analysis of the theory with the facts of the oil spill causes I believe that: as long as the bearing lubricating oil does not solve the formation of the oil bubble to eliminate the source of the oil spill, completely avoidable oil spill, and than the fixed parts and moving parts of the seal does not produce oil spill clearance easily and reliably solve the problem of bearing oil spill.

    The principle is the formation of the oil bubble: lubricants movement when in contact with air and driven by the momentum of the air flow is greater than the resistance (ie, oil viscosity and weight work together) into the oil, combined with the air flow direction to point to the oil surface. Thus, air easy access to oil. Into the oil can rely on its own light weight buoyant float, but can not overcome the viscosity of the oil, the oil bubble.

    The formation of the oil bubble principle for the bearing lubricating oil circulation flow in the unit operation to the formation of oil bubbles to eliminate the source of the oil spill, in order to solve the radial thrust bearing oil leakage. To this end, following some of the more ideal way to:

    (1) The main way is to make the movement of the lubricant in the bearing body in the air into a closed flow air isolation:

    The circular motion of the lubricant in the bearing body in the air is nothing more than the discharge of oil into the oil before the oil surface to the bearing and bearing lubrication to the oil surface. Zhejiang Tianma Bearing Co., Ltd. M & Luo axis scheme radial thrust bearing into the oil to enter the bearing thrust plate, driven by. The thrust plate at the same time led to the movement of anti-air speed, although faster, but the direction does not point to the surface, but the wind deflector cavity maneuver, and thus can not form the oil bubble. The formation of the cavity of the oil bubble is in the bush forward oil, bearing oil spills have no effect, and before entering the bush will be constantly undermined, and so put an end to the bearing oil level in vivo formation of the oil bubble. The final analysis, is isolated after a bearing lubrication oil discharge movement and air.

    Radial thrust bearings in the bearing lubrication oil discharge although the two channels: one is the row hole in the guide block; the other is a small thrust plate at the circumference of the oil discharge. These are all allowed to freely air discharged into the hot oil cavity channels, so the radial thrust bearing lubricating oil to the formation of the oil bubble is mainly present in the cavity of the hot oil, oil spill oil spill is in the hot oil chamber end cap seal.

    These two in close proximity to discharges of oil and air isolation from the oil surface is not difficult. Zhejiang Tianma Bearing the Masing law personal resume of an oil pan, and set the lower part of the oil pan drain line and then set an appropriate caliber, put the bearing lubrication oil in the free flow of air into and air The isolation of closed-end flow. Set set oil pan of this measure, even if the formation of a little oil bubbles also set the oil pan above the oil level does not form an oil spill sources.

    (2). Set to bubble plate:

    Go bubble board structure: a fixed hot oil oil chamber side of the board, down the Ministry of row hole, and fitted with a lot of destruction of the bubbles hollow Jian Zhen, hollow needle with a lateral vent.


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