Finding and analyzing the cause of bearing vibration abnormality (1) After the unit is out of service, check the cause of the vibration abnormality: 1 Check the quality of the bearing lubricant and meet the specification requirements; 2Put the manhole into the low pressure cylinder and check the final rotor blade. An abnormality was found; 3 the rotor weight was inspected and no abnormality was found; 4 the shaft seal steam inlet inlet filter and the shaft seal heater hydrophobic filter were inspected, and no abnormality was found. 5 Check the underlying platen under the bearing seat and the cylinder support at that place, no abnormalities were found; 6 Check the oil return filter of the lubricating oil tank, no abnormalities were found; 7 The installation status of the vibrating meter in the bearing seat and the confirmation of the signal of the field control panel were not found. Abnormal; 8 entered the internal inspection of the condenser hot well, no abnormalities were found; 9 bushes were inspected for uncovering, no abnormalities were found; 10 low-pressure cylinder 1 was opened for inspection, and the outer cylinder and inner cylinder of the low-pressure cylinder 1 were uncovered. Found an exception. (2) Analysis of the technical data collected during the vibration surge of the unit on June 13: 1#2 bearing metal temperature is around 90 °C (the alarm value is 600MW turbine bearing vibration analysis and bearing load adjustment method) Ming, although no abnormality, but the metal temperature value is high; 2#3 bearing metal temperature is about 60 °C, the metal temperature value is low; 3#3 bearing metal temperature is close to the lubricating oil return temperature. (Finish) Casement Window Profile Extrusion Dies
Aluminum casement windows are a common type of windows made of aluminum alloy materials. Its characteristic is that the sash can be opened inward or outward and is connected to the window frame through hinges. Casement windows have the following advantages:
1. Strong durability: Aluminum alloy materials have good weather resistance and corrosion resistance and are not easily affected by oxidation and corrosion, so casement windows have a longer service life.
2. Easy to open: Casement windows can be easily opened inward or outward through hinges, providing greater ventilation and lighting space.
3. Good sealing: Casement windows are sealed with sealing strips and sealant strips, which can effectively prevent the intrusion of wind, rain and noise, and provide better heat and sound insulation effects.
4. High security: Casement windows can be equipped with safety devices such as multi-point locks to provide better safety performance and prevent intrusions and accidents.
5. Beautiful and elegant: Aluminum alloy casement windows have a simple and modern appearance, are suitable for various architectural styles, and can improve the aesthetics of the building.
In general, aluminum alloy casement windows are a common type of windows with the advantages of strong durability, easy opening, good sealing, high safety and elegant appearance, and are widely used in various buildings.
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