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Industrial pipe gas flowmeter installation considerations
Industrial pipeline gas flow meter is a new type of flow meter developed using the principle of liquid vibration. It is widely used in the measurement of fluids in the petroleum, chemical, metallurgy, and papermaking industries. The flow meter has no moving parts, and has high reliability and precision. Long life, accurate measurement of liquid instantaneous flow and cumulative flow over a wide range of flow rates.
Industrial pipe gas flow meter installation considerations
The sensor can be installed in the vertical, horizontal or arbitrary inclined position according to the flow direction mark; when the pipeline is longer or closer to the vibration source, support should be installed on the upstream and downstream of the flowmeter to eliminate the influence of the pipeline vibration; the installation location of the sensor There should be enough space for the inspection and maintenance of the flowmeter, and the environmental requirements of the flowmeter should be met; interference from external strong magnetic fields should be avoided; when installed outdoors, there should be cover to avoid exposure to the sun and rain. , Influencer
Table service life; pipeline pressure test, should pay attention to the intelligent pressure meter pressure sensor configuration measurement range, in order to avoid over-pressure damage to the pressure sensor. Attention should be paid to the effect of installation stress. The upstream and downstream piping of the installation flowmeter should be coaxial, otherwise shear stress will occur. The location where the flowmeter is installed should consider the thickness of the gasket or install an elastic expansion joint on the downstream side. Before installing the flowmeter, remove the welding slag and other debris. When it is put into operation, the upstream and downstream valves of the flowmeter should be opened slowly so as not to overwhelm the spinner in an instant. When the flowmeter needs to transmit signals remotely, the external power supply (8-24 VDC) should be strictly connected according to the requirements of "Electrical Performance Index". It is strictly forbidden to directly connect the 220VAC or 380VAC power supply at the signal output port; users are not allowed to change the explosion-proof system by themselves. Wiring method and arbitrary twisting of each output lead connector; when the gas flowmeter is running, it is not allowed to open the back cover to modify the instrument parameters, otherwise it will affect the normal operation of the flowmeter; regularly check the leakage condition of the flowmeter flange.
Industrial Pipeline Gas Flowmeter Segment Requirements
According to the working principle of the precession vortex flowmeter and the requirements of the upper and downstream straight pipe sections of the flowmeter, various upstream resistance elements are ensured to have a length of at least 3D for the upstream side straight pipe section and at least 2D for the straight section of the downstream side.
1. Elbow: For elbows, ensure that the length of the straight section on the upstream side is at least 3D, and the length of the straight section on the downstream side is at least 2D.
2. Reducing tube: For the retracting tube, ensure that the length of the straight tube on the upstream side is at least 3D, and the length of the straight tube on the downstream side is at least 2D.
3. Expanding the pipe: To expand the pipe, ensure that the length of the straight pipe on the upstream side is at least 3D, and the length of the straight pipe on the downstream side is at least 2D.
4. Valve: If there is a valve on the upstream side, then the length of the straight section on the upstream side must be at least 5D, and the length of the straight section on the downstream side should be at least 2D.