Axial force will affect the stability of the compressor shaft displacement

Due to the leakage of the interstage seal, the pressure on the impeller wheel cover side is reduced and the pressure on the wheel side is increased, so that the axial force is increased; and the back pressure of the pipe network is increased due to the K480 turbine compressor, resulting in the wheel side The increase in pressure also increases the axial force F. Thus, due to the increase of the axial force, the balance system of the original axial force is broken, and the rotor is offset to the thrust bearing. If the oil pressure between the thrust disk and the thrust block cannot cancel the increased axial force, the thrust of the rotor The disc will inevitably stick to the thrust block and dry friction, causing the thrust block alloy to wear and the shaft displacement to climb until it jumps.

The thrust bearing is actually a bearing that combines the supporting action and the thrust action. The axial force of the K480 turbine compressor is borne by the thrust bearing. The thrust block and the thrust plate have a gap of 01250135mm to facilitate the formation of the oil film, and the thrust block can swing. When the thrust plate rotates at a high speed, the lubricating oil is brought into the gap between the thrust plate and the thrust block, thereby generating dynamic oil pressure to balance the axial force. During maintenance, if the following conditions occur in the assembly of the thrust bearing, such as the inner diameter axis of the thrust bearing and the verticality of the thrust ring surface exceed the tolerance requirements; the parallelism of the two sides of the thrust ring exceeds the tolerance requirement; the bearing pin does not have a positioning function; The mid-section contact surface is not smooth or staggered; the bearing is clamped in the bearing seat; the thickness of the thrust block is inconsistent, which affects the uniform distribution of the axial force on the thrust block and the bearing capacity of the oil film. The displacement is stable.

The reasons for the increase of the shaft displacement of the K480 turbo compressor are various. It is required that the chemical personnel should be careful in the operation and find out the problems in time; the maintenance workers should be serious in the maintenance, especially in balancing, aligning and installing. Thrust bearings.

Gravity Destoner

The princple of the machine:

The Stoner is based on the proportion of grain crop and cobble density differences, by adjust the pressure and vibration frequency separate the stone and grain. The machine is equipped with a multi blade fan with high accuracy,The lighter grain crops will be suspended state, and the larger proportion of the stones will cling to the stainless steel mesh by adjusting the air pressure, and then by adjusting the frequency that Stoner table vibrates so as to achieve the purpose of separation. The machine equipped with frequency conversion control device can be subtle regulation, even if the proportion of the difference is very small, stones also will be separated. We are the De-stoner Chinese supplier.

The data: 

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Hebei HELIDA Grain Selecting Machinery Technology Co., Ltd. , http://www.grainseedscleaner.com