The characteristics of the V cone flowmeter scale and installation method

Abstract: the characteristics and installation method of V cone flowmeter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. V cone flow sensor and flow meter of the device is widely used in petroleum, chemical, natural gas, mining, metallurgy, steel, power, water conservancy, water supply and drainage, paper making, sugar, pharmaceutical, beverage, textile, printing and dyeing, chemical fiber, environmental protection and municipal engineering and other fields. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a V cone flowmeter scale characteristics and installation method of the article details. V cone flow sensor and flow meter of the device is widely used in petroleum, chemical, natural gas, mining, metallurgy, steel, power, water conservancy, water supply and drainage, paper making, sugar, pharmaceutical, beverage, textile, printing and dyeing, chemical fiber, environmental protection and municipal engineering in the areas of measurement and measurement. Especially in the measurement of coke oven gas, blast furnace gas, natural gas, flue gas, liquefied petroleum gas (LPG) oil, organic gases and materials such as serum medium, such as viscosity, pollution V cone flow sensor and meter has a unique advantage. 1 V cone flow sensor and the working principle of flow meter 1. 1 V cone flow sensor and the theoretical basis of the flowmeter. V cone flowmeter is a differentia pressure type flow meter, its theory is based on the energy in a closed pipeline of mutual transformation between Mr Hard law, namely under the condition of the steady flow, pipe flow velocity and differential pressure in the direct ratio. 1. 2 V cone flow sensor and the structure characteristics of the flow meter. V cone flow sensor and although is differential pressure flowmeter of the flow meter, but it broke through the many of the limitations of the traditional differential pressure flowmeter using the throttling of the coaxial installed in the pipeline. The difference is that ordinary intercepting device, the minimum flow area is circular, and V cone flow sensor and meter minimum flow area of the ring. When the fluid flows through the v-shaped cone hung in the pipe and tube wall clearance, which is formed by the fluid flow speed, reached the maximum in the big end of the V cone, at the downstream V cone to form a low pressure side, so as to generate differential pressure, before, during, and after V cone by means of differential pressure measurement of flow measurement. Because the V cone flow sensor and the unique structure of flowmeter throttle, the fluid is not a sharp contraction in the pipe, the change of fluid pressure is relatively smooth, the differential signal is more stable. V cone flow sensor and meter, therefore, can ensure traffic, especially the small flow of accurate measurement. Again at the same time, because of the characteristic of the axis of suspension and V cone structure, when the fluid is close to V cone pipe center slow flow velocity, and fluid flow near wall gradually accelerated, automatic high-speed fluid directly scour inner cone throttling and pipe wall, and automatically complete the cleaning work, avoid the dirt medium adhesion and piled up. Therefore, V cone flow sensor and flow meter is very suitable for liquid gas, water and liquid or gas in the gas medium containing particles or other impurities are fixed flow measurement. 2 V cone flow sensor and meter performance and characteristics of the two. 1 V cone flow sensor and meter to produce more stable differential pressure signal, the small flow measurement more accurate. The differential pressure orifice is through the hole in the middle of the throttling parts, let the fluid sudden contraction, flow changes, resulting in a pressure difference; V cone axis of flow sensor and the meter is through suspension conical body, let the smooth flow of the fluid gradually contraction changes, thus reduced the pressure fluctuation amplitude of the differential pressure signal is more stable, can distinguish between differential pressure signal of smaller, more conducive to small flow rate measurement. 2. 2 V cone flow sensor and meter measuring the flow range are more wide. Because V cone flow sensor and the unique structure of the flow meter, when still can produce enough resolution in low velocity of pressure difference, make the differential pressure range lower limit is lower than traditional differential pressure gauges, to expand to the lower limit range to 15:1. 2. 3 V cone flow sensor and meter has high repeatability, high measurement precision. V cone flow sensor and meter repeatability is better than & plusmn; 0. 1%; Measurement precision is better than & plusmn; 0. 5%. 2. 4 V cone flow sensor and meter wear resistance compared with the traditional instrument, to clean, good long-term stability, long service life etc. V V cone in cone flow sensor and meter, when fluid flow in the v-shaped cone surface boundary layer, the fluid end of a line left V cone throttling, and because of the boundary layer effect, channel fluid to leave, may reduce the wear and tear; Purple plot features of its own at the same time, make its throttle size stable for a long time, thus has long term stability. 2. 5 V cone flow sensor and meter short straight pipe requirements. General upstream in 0 ~ 3 d, downstream in 0 ~ 1 d, V cone flow sensor and the upstream side of the flow meter is equipped with valve, flow meter and the distance between the valve should guarantee the 3 d. Orifice plate and other traditional differential pressure instrument used in measuring, the scene of the most of it is difficult to meet the requirements of long straight section, resulting in additional measurement error, V cone flow sensor and meter cone structure, have the effect of the flow field of a rectifier, rearranged the upstream of the velocity distribution, even under the condition of bad installation, also makes the velocity distribution of flat and symmetry, to ensure the accuracy of measurement.

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