The comparison of the process parameters of the new and old rotor components is the design parameters of the steam turbine before and after the technical transformation. In order to check the actual operating conditions of the internals of the compressor under the pressure of the inlet, we tested the inlet pressure of the 102-J compressor before the technical shutdown of the unit in 2003, when the system load was 92%. Before the change), the excess gas is increased by opening the FICV-70 to increase the flow rate of the compressor outlet, and also to meet the safe operation of the device. The inlet pressure is increased to 0.47 MPa, and the pressure of the turbine level is 1.42 MPa. The load is 85% (after technical transformation) (after deducting the influence factor of FIC-70 old orifice flowmeter), from the above data, we can see that the rotor before the technical transformation is close to the rated power and the compressor is imported. The pressure must reach 0.5MPa operation, and the turbine can only meet the 90% load of the device (after technical transformation) under the premise that the pressure does not exceed 1.42MPa. Maintenance of 102-J economic and reliable operation measures Since the repair on May 10, 2005, due to the damage of the turbine internals after the 102-J technical transformation, the original internal parts were replaced, so that the 102-J unit was in the original design condition. Under the operating conditions, it can only meet the system load after the technical transformation is about 90%. How to make the 102-J unit operate economically and reliably after the technical transformation of the device? How can the operation load of the unit be improved and the device can be Under high load, safe, stable, long, full and excellent ground operation to reduce production losses and improve the economic benefits of enterprises, this is an urgent problem to be solved in front of the leaders and employees of all levels of the company. Under the leadership of the company, we proposed a series of optimized operation and careful maintenance to ensure the economic and reliable operation of the 102-J unit, thereby increasing the load of the unit and minimizing the production loss caused by the 102-J unit. (1) Stabilize the operation of 102-J unit, strictly control the speed below 9800r/min, and the first stage pressure is not more than 1.42MPa. FIC-1 can be fully opened to reduce the resistance of the regulating valve. In order to stabilize the unit's speed as much as possible, the PIC-27 was changed from automatic control to manual operation. Through a period of stable operation, combined with the actual operation of the unit, through the comparison with the original design, the first-stage post-pressure control index of the turbine is increased from 1.42 MPa to 1.471 MPa, so that the unit can increase the load on the original basis. . (2) According to the actual situation that the 102-J design inlet pressure is 0.47MPa after the technical transformation, combined with the control of the low pressure cylinder oil pressure difference, we will increase the 102-J inlet pressure to 0.55MPa, which has two advantages. First, under the condition of ensuring the unit load is constant, the turbine inlet steam flow can be reduced, the turbine post-stage pressure can be reduced, and the energy consumption of the unit can be reduced under the premise of ensuring the safe operation of the unit; When the turbine's inlet steam flow rate is constant, the system load is increased and the energy consumption of the 102-J unit is not increased, which increases the output of the unit. (3) Strictly control the air pressure difference of the low pressure cylinder to prevent the accident of the auxiliary oil pump starting or even the unit jumping; by adjusting the pressure of the main oil pump outlet, the pressure of the low pressure cylinder sealing oil of the compressor can be improved, which is helpful to the compressor. The control of the low pressure cylinder oil pressure difference creates favorable conditions for further increasing the unit inlet pressure, and also lays a solid foundation for the device to continue to increase the load. The economic benefit analysis starts from May 18th to July 20th when the system load is stable at 90%. After this period of operation, we gradually increase the load to 95% after careful analysis. Take a load of 1% per day, and after 24 hours of stable operation, carry out the second load-up work. At this point, until July 27, the system load is increased to 95% and it runs until October 18, and the load is added to the 19th. 96%, the load on the 20th is increased to 97%, and the load on the 21st to 23rd is increased to 98%. The system load and the daily output of the device. Conclusion By optimizing the operation, changing the existing operation mode, stabilizing the load of the unit, improving the ability of the 102-J unit to operate safely and economically, and achieving the first high-load safety and continuous operation for 100 days since the technical transformation of the equipment energy-saving and production increase . At the same time, the device did not stop and repair due to the problem of the 102-J unit. En853 1Sn Hydraulic Hose,Din En 853 1Sn Hydraulic Hose,1Sn Hydraulic Hose,En853 1 Inch Hydraulic Hose Hebei Huayu Special Rubber Co.,Ltd , https://www.api7khose.com