Filter reducing valve is damaged, how to deal with it
The filter reducing valve is damaged, how to deal with, especially in the case of the filter reducing valve does not stop processing, with the development of the global integration of the economy, especially the rapid follow up of the emerging economies, the demand for petrochemical terminal products is increasing, and the reliable and stable operation of the production device also has higher requirements. Xylene production unit is a major device for the production of new environment-friendly petroleum products. During the daily inspection of the instrument, it was found that the air filter reducing valve of the instrument with feed interlock and cut off valve of the instrument was cracked, and its cracks tended to expand gradually, threatening the normal production of the device, and might even cause the unplanned shutdown of the device.
1. Problems existing in the feed interlock cut-off valve
Xylene device filter pressure reducing valve as a component of the driving force of the pneumatic valve transport pipeline, not only plays the role of filtering the air, preventing the fine particle pollution in the gas from blocking the pneumatic parts of the actuator, but also plays the role of decompression of the pneumatic pressure signal, that is, the air source from the air compressor is filtered and purified, and can be adjusted to the required pressure value for pressure regulation
2. The design of the feed interlock valve takes into account the problems of leakage, large diameter (DN300) and no physical space for setting secondary line valves. Any failure of the valve body will not be removed for processing. In the process of inspection, it was found that the feed interlock valve of xylene device and instrument filter reducing valve was cracked and cracked. With the gradually widening crack of instrument filter reducing valve, once the pressure reducing valve of instrument air filter loses power due to rupture, the interlock valve will cut off the feed interlock valve under the action of the reset spring, which directly threatens the normal production of the device. Trigger an unplanned shutdown of the device. Feed interlock cut-off valve.
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