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1. Where to find a liquid flow controller?
2. Operation valves and flow meters for oil product switching
When switching oil products, the operation of valves and flow meters should strictly follow safety regulations and accuracy control requirements, with the core being to ensure smooth switching, prevent oil mixing, and ensure accurate measurement.. 1. Before switching valve operations: Confirm the initial state of the valve. The valve to be closed should be tightly closed, and the valve to be opened should be in the closed to open state; Check for valve jamming and other abnormalities; Determine whether to open the bypass valve in advance to balance the pipeline pressure according to the process requirements. Switching: The operation must be slow. First, slightly open the valve of the target oil pipeline, and then gradually increase it after the pressure stabilizes; Follow the sequence of opening first and then closing, that is, first open the target oil pipeline control valve, and then close the original oil pipeline valve. After switching: check the sealing of each valve and observe for leaks; Lock the operated valve to prevent accidental operation. Before switching between front and rear use of the flowmeter, check whether the flowmeter is working properly and whether the accuracy meets the requirements; If there is a bypass pipeline, it can be considered to bypass first during the initial switching period to avoid impurities or bubbles from impacting or affecting the precision measuring equipment. Switching: closely monitor changes in traffic indicators to determine if the switching process is smooth; Be careful to prevent gas from entering the flowmeter and perform exhaust operations if ne
3. Does the leakage of the pressure valve of the differential pressure flowmeter affect the measurement?
The leakage of the pressure valve of the differential pressure flowmeter has an impact on the measurement.. After understanding the consequences of gas leakage, lets take a look at how it specifically affects. Differential pressure flow meters rely on accurate pressure measurement, and any leakage will directly interfere with their normal operation. 1. The differential pressure flowmeter is based on the Bernoulli equation and calculates the flow rate by measuring the differential pressure before and after the throttling device. When the pressure valve leaks, it will disrupt the normal pressure balance. If the positive pressure side valve leaks, it will cause the pressure on the positive pressure side to decrease, resulting in a decrease in the measured differential pressure value. According to the flow calculation formula, the calculated flow rate value will be smaller than the actual flow rate. If the negative pressure side valve leaks, it will accompany the sail air, which will increase the pressure on the negative pressure side, and the measured differential pressure value will also decrease. The final calculated flow value will also be smaller than the actual flow rate
2. Changing the turbulent flow state of the fluid flow and the pressure valve leakage may cause changes in the flow state of the fluid in the pipeline. Local turbulence or eddies may occur at the leakage point, preventing the fluid from passing through the throttling de
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