ugg stiefel MS6001 gas turbine starter failure ana

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MS6001 gas turbine starter failure analysis and

Large suddenly small, because the amount of c values reflect the size of the fuel,[link widoczny dla zalogowanych], the control system will be based on the size of c values of fuel through the bypass servo valve to control the opening Yan, control access to determine the amount of fuel gas turbines. When the c value (the first fuel flow divider speed average of three) is too large, the control system through the servo valve to the bypass valve to open a lot of amount of fuel down. On the contrary such as the c value is too small will bypass valve off small, so that the increased fuel Shantou. C value of the volatility of the suddenly large ignored the small amount of fuel, the Executive and the flame from the nozzle, especially when 【small. When the flame burning down to limit the amount of turbidity caused by stalled after the shutdown; third, to take measures and effect in the analysis of the situation, and the company concerned immediately with the council. First oil flow divider three suspected gun tripod head instructions are not allowed at low speeds. To do this, check the installation of the first three velocity space, respectively 0.35,0.25.0.30 ram, and then remove the first three guns, found some black dirt head, cleaned and then by 0.5mm gap required will be installed the first of three guns. In order to check the gun first at low speed instruction is correct, ready to use the DC motor distributor, through the temporary connection of the DC power to boost fuel flow divider at low speed testing. As the motor had never normal operation, the motor wiring through the inspection found to have received the wrong at the factory, the corrected, the motor is operating normally. I test three gun by Huan head stability at low speed when the direction normal operation, excluding the impact of head speed, the test also found that the process of starting fuel flow divider resistance torque is too large, the beginning of rotation is not flexible , when the stop switch 12 at noon when the official start gas turbines, fuel flow in the ignition distributor and found the instructions of the value of the first three speed suddenly big suddenly still small flame still unstable. Was observed in the engine control panel to Rs, T --- readings are not displayed simultaneously, but one by one in a certain time interval will detect the data displayed, because these values are unstable, and thus their average C is not stable, it controls the amount of fuel caused by rapid change, this type of model is the burning diesel, according to the conventional normal do not have to put into operation starting the starter motor fuel flow distributor, the distributor of the rotation entirely by the fuel pressure impulse . It seems the distributor in case of dirty oil from the long-running internal fouling deposition to Bf, resulting in increased torque required to start, so starting in the low fuel pressure is not easy driving; this time the fuel bypass valve control system will gradually off small, will hold back until the oil pressure increases to overcome the resistance torque splitter after turning, turning once after the fuel pressure is too high due to fast increases the speed to high speed dispenser: At this point control system and will bypass Yan open too, the fuel pressure down, when the hydraulic splitter makes low speed dips Shiyou; so repeatedly, resulting in speed fluctuated distributor,[link widoczny dla zalogowanych], suddenly a large amount of fuel suddenly small,[link widoczny dla zalogowanych], 【from flame instability and ultimately lead to extinction downtime. Analysis according to the first test, we study the company concerned, to overcome the resistance torque starting fuel flow divider is too large, it decided to start the motor and put into the ignition and continued 2 to 3 minutes, so that through the slow warm-up into the gas turbine increases the speed stage, since increasing fuel flow, oil pressure rising, more and more high-speed splitter, there is sufficient power to maintain stability, then to disable the starter motor. These measures, starting at 12 pm the second gas turbine, and finally a successful reach full speed. And again on the same day five p.m. start successfully and smoothly bring the unit at full capacity. Once again the afternoon on the 14th after the successful start and bring to a full load gas turbine. Start Trouble prove that this solution approach is correct. Fourth, the proposed observations while taking the fuel flow divider and extension after the starter motor into running time, you can successfully complete the starting gas turbines. But in the long run, fuel flow divider by the dirty oil pollution, the starting moment of resistance is too large or is not normal. To this end, we recommend that in future the user should pay attention to fuel quality and proper handling, as far as possible into the clean diesel unit, should also be an early order of a fuel flow divider as a spare,[link widoczny dla zalogowanych], put on at the right time to go. According to the provisions of gas turbine manufacturer, users have replaced the distributor back into the factory maintenance, does not allow users to open their own, so do not provide assembly drawings, parts lists, and disassembly instructions and other technical information. If the user then be asked to decide on their own to prepare for maintenance, including spare parts and technical preparation. Starting in resolving the fault analysis and processing, Nanjing Gas Turbine Research Institute Huangdong Yu, Yang Zhixin, Zhou and Zhang Dong Ke true of 4 people participated and received the Secretary of Nanning Gas Turbine Power Generation Co., Ying,[link widoczny dla zalogowanych], and with the help of the persons concerned, to express my gratitude.
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