Installation method and troubleshooting of steam valve
August 01 18:08:41, 2023
The piping system must be flushed and cleaned before installing the steam regulator. To prevent welding slag, scale and other stolen goods flow into the valve, the destruction of steam valve sealing surface, affecting the normal work of the valve. Steam valve should be installed in a place convenient for operation and maintenance, and must be mounted upside down on the horizontal pipe. Pay attention to the flow direction of medium in the pipe. The valve should be in the same direction as the arrow on the valve body. Loaded Steam medium valve must be installed backwards, with over the condenser must be higher than the implementing agencies, so that the actuator can be filled with condensers, play a role in protecting the diaphragm. Extended service life. Steam valve in the installation, the condenser should be filled with cold water, the bypass valve to open the globe valve to exclude the condensate in the pipeline and the mixture of soft drinks to prevent the decompression valve opens when the phenomenon of water and garbage damage Pressure reducing valve, when there is no abnormal phenomenon, turn the adjusting screw slowly in the clockwise direction and adjust the outlet pressure to the desired pressure (based on the gauge pressure after the valve). After adjustment, tighten the lock nut tight, protecting mask. Pressure reducing valve should be installed before the filter to prevent media debris into the valve, affecting its performance. Before and after the installation of the valve should have a straight tube, the straight pipe before the valve is about 600 mm in length, straight pipe after the valve is about 1 mm in length. General pressure relief valves are required import and export pressure must ≥0.2Mpa. Pressure reducing valves are usually DN15 ~ DN400 and other specifications, the working pressure before and after the valve were <1MPa and 0.1 ~ 0.5MPa, pressure range of ± 5% to 10% error. Troubleshooting After the valve pressure instability with the valve before the pressure changes and changes; causes; 1, the spool is foreign objects stuck in; 2, stem, push rod stuck; 3; into the pipeline to eliminate the clogging; 1; Disassembly and removal of foreign objects 2, readjustment; 3, the pressure drop does not come down after the dredge valve, and always above the demand value changes; causes; 1 set the spring stiffness is too large 2, the valve diameter is too large 3, the valve pressure is too high , Decompression ratio is too large Exclusion: 1, replace the spring 2, replace the smaller diameter 3, the valve before the pressure: the valve pressure exceeds 10: 1 should be 2 after the pressure relief valve does not rise, always below the demand value changes 1, set the spring stiffness is too small 2, the valve aperture is too small 3, the decompression ratio is too small Exclusion: 1, replace the spring 2, replace the larger diameter 3, the valve before the pressure: valve pressure below 1.25, Should increase the pressure before the valve before the valve does not rise, always below the demand value action; Reason; 1 set the spring stiffness is too small 2, the valve is stuck in foreign objects; 3; stem, push rod card ; 4; spool, valve seat is damaged, the leakage is too large 5, the valve diameter is too large Exclusion 1; replace the spring 2, re-disassembly 3, readjustment 4 re-grinding or replacement 5, replace the smaller diameter valve 1, set the spring stiffness is too large 2, the valve diameter is too small 3, spool, stem, putter and other stuck stuck method: 1, replace the spring 2, Replace the larger diameter 3, remove the cause of stuck, readjust the valve pressure or valve pressure fluctuations are too frequent causes 1, the valve diameter is too large 2 actuator chamber capacity is too small Exclusion: 1, select the appropriate valve diameter 2 , Add a damper in the inlet pipe
The guardrail rig machine is applicable to soil, clay, fill soil, silt, silt layer, and some strata contain pebbles, gravel; widely used in high-speed rail trestle piles, slop shield piles, photovoltaic power station foundation pile, power grids, civil construction, new rural construction, municipal construction, landscaping and other projects.
We will follow the normal and safe packing and transportation to ensure the safe arrival of the goods. We export to many countries, has rich experience in loading the drilling rig, export standard containers are 20GP, 40GP, 40HQ container, or FR in the case of bulk parts.
Guardrail drilling rig for Road and Bridge as well as the Dam and Tunnel Slope Construction Protection.
Guardrail drilling rig for Philippines,Vietnam,Australia,UAE , Egypt, Africa sale.
Guardrail Rig,Screw Rod Anchor Drilling Rig,Construction Spiral Rod Drilling Rig,Geophysical Prospecting Drilling Rig