Operating time of the turbine cycle machine
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The turbines in our company can operate for up to 100 days, but usually it is the bearings at the motor load end that get damaged; sometimes they only last 3 days in operation. TC450/32_13: Power of 600 kw, speed of 2970 revolutions; lubricating oil: 46# turbine oil. This post was last edited by ayhcx on 2009-3-5 at 11:05
The quality of maintenance is really problematic :@ Large-scale operating equipment should at least run for over a year before it needs to be repaired. :L
1. Is there a problem with the process: such as liquid ammonia in the inlet gas； The hydrogen-to-nitrogen ratio is severely imbalanced ； The system resistance is too high. 2. Maintenance aspect: Is the thrust clearance appropriate? ； Verify that the coupling adjustment shims are of the same specification and check again ； Is the rotor strictly dynamically balanced? Wait, it needs to be thoroughly checked.
To extend the operational life of equipment, it is necessary first to ensure that maintenance work is done properly and to a high standard, and secondly to ensure that the manufacturing processes are carried out correctly. The two complement each other and are indispensable.
The turbo motors repaired by our company for various organizations have been in operation for over a year. These organizations include: Pingmei Group’s Feixing Chemical Industry in Henan Province, Luoyang Junma Chemical Industry, Anyang Chemical Industry Company, Liuzhou Chemical Co., Ltd., Hechi Chemical Industry, Hubei Yihua, Sichuan Honghe Chemical Industry, and many others. Manager Pan from Xiangtan Jinyang Motor Repair and Manufacturing Co., Ltd. can be reached at 13975285298
1. Inspection quality, especially the thrust clearance. 2. Gas composition – the hydrogen-to-nitrogen ratio is too low. 3. Process operation: it is preferable to use the inlet valve for adjustment rather than the outlet valve
1. The operation of turbines imposes strict requirements on the process environment; low H2 levels can cause an increase in the density of the mixed gas, leading to excessive power and current consumption by the turbine and a shortened service life. 2. Adjust the gaps between various components properly. 3. The quality of the protective gas must be guaranteed. 4. Lubricant quality.
To extend the operational life of equipment, it is necessary to consider not only the quality of maintenance but also to ensure the high quality of spare parts, while operating strictly in accordance with the prescribed procedures.
Our turbine compressors have been operating continuously for a year without any problems; if there are no planned shutdowns, they can keep running for two or three years as well. The compressor units were manufactured by Shenyang Steam Turbine Group, while the steam turbines were produced by Hangzhou Steam Turbine Company – both offer excellent quality.
The turbines in our company also had a short operating life when first put into use; there were even instances where the system was forced to reduce its load significantly due to the need for continuous repairs on the turbines. Since then, strict adherence to procedures has been enforced in terms of operational practices and repair quality, with particular emphasis placed on the technical aspects of repairs. After nearly a year of repeated efforts, it is now possible to carry out planned maintenance on these turbines, ensuring an operating life of over one year.
As long as the cause of the problem can be identified, there is a way to solve it. .
Large-scale units generally operate continuously for long periods of time. If they have to be shut down due to issues with these units and maintenance is required, it is necessary to investigate the reasons related to the manufacturing processes and the equipment itself. Only by identifying the root causes and taking appropriate actions can the goals of long-term, stable, full-capacity, and high-quality operation in chemical production be achieved”
The turbine cycles in our factory generally need to have their bearings replaced after about three months of operation. The reason is that operation at this temperature for an extended period results in a consistently high hydrogen ratio.
Generally speaking, when the hydrogen content is relatively high, the load on the compressor is reduced. In your facility, the centrifuges need to be overhauled too frequently, at the same frequency as the reciprocating pumps. Normally, a centrifuge is considered to be operating at an acceptable level if its service life exceeds one year. It seems necessary to conduct a thorough investigation to identify the problems
We also need to check whether it is powered by steam or electricity. If it is electrically powered, some components use rolling bearings, which generally require inspection every three months and replacement every six months. If it is powered by steam, sliding bearings are used, and these can usually last for a very long time; ours have been in use for over two years with no problems at all
It is mainly caused by excessive rotor temperature; at high temperatures, hydrogen facilitates hydrogen corrosion. By enlarging the inlet pipe for the protective gas, the rotor temperature has been reduced, thereby extending the service life of the bearings to a limited extent.