Turbine flowmeter daily correct maintenance and troubleshooting methods

1. There must be a certain amount of lubricating oil on the meter head, and the lubricating oil is generally silicone oil or arsenic oil. 2. Regular inspections should be carried out on time. Listen: whether there is any noise in the operation; check: whether the mechanical counter on the meter is jammed, and whether the records are continuous. 3. The filter should be cleaned every six months. Whether the filter is clogged can be judged from the pressure difference between the inlet and outlet. Generally, if the pressure difference exceeds 0.07MPa, it should be cleaned. 4. The gear transmission part of the meter head should be cleaned, inspected and lubricated every year, and the meter head should be adjusted. 5. The temperature compensator accuracy corrector should be checked once a year, and the gear transmission part should be cleaned and lubricated. 6. Use within the specified range of the flowmeter, and do not exceed the limit; 20% overload must not exceed 30 minutes, otherwise the measurement accuracy will be reduced. 7. Do not let the fluid flow backwards. The pointer of the on-site display or the character wheel of the counter are reversed to indicate the reverse flow. Check carefully to avoid accidents. 8. The filter screen should be 40 or 60 mesh/inch stainless steel wire mesh. 9. The transmission and magnetism of the magnetic seal coupling or mechanical seal coupling should be checked to check whether the magnetic field strength is sufficient, and if it is not enough, the magnetic steel should be replaced in time. 10. Before using it, you should first open the bypass valve slowly, then open the inlet valve of the flowmeter, and then open the outlet valve. When opening the outlet valve, you must pay close attention to the moving speed of the pointer of the flowmeter. After normal operation, close the bypass valve. If abnormal, the bypass valve should be opened immediately, and the inlet and outlet valves should be closed at the same time for inspection and treatment. 11. After the pipeline is newly installed or repaired, the filter must be opened to remove impurities after one day of use. During normal use, the filter must be cleaned once every six months for light oil and three months for heavy oil, and it is strictly forbidden to use steam to purge the flowmeter. 12. When replacing the graphite bearing, the maximum clearance for the DN50 flowmeter shall not exceed 0.1mm; for the DN150 flowmeter, the maximum clearance shall not exceed 0.2mm; the clearance between the upper and lower covers and the rotor and the rotor and the inside of the metering box The maximum gap between the cavities should not exceed 0.15mm. 13. When disassembling for maintenance, important parts should be marked to avoid wrong installation. 14. During assembly, the rotor should rotate flexibly, the gap should be uniform, the meshing should be correct, the inner cavity should be rotated between the rotors, and there should be no friction and collision between the rotor and the upper and lower covers. Turbine flowmeter adopts advanced ultra-low power consumption single-chip microcomputer technology to develop a new type of intelligent instrument integrating turbine flow sensor and display integration. It has compact structure, intuitive and clear readings, high reliability, no external power interference, and lightning resistance. , low cost and other obvious advantages. It can be widely used in industries such as petroleum, chemical industry, metallurgy, organic liquid, inorganic liquid, liquefied petroleum gas, urban gas pipeline network, pharmaceutical, food, paper making and so on.

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