No orifice variable frequency air flow meter scale application in formaldehyde production

Abstract: there is no orifice variable frequency air flow meter scale application in formaldehyde production information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Pick to: intelligent instrument can be set in a fine setting of various parameters and modification, and instrument internal no moving components, high reliability and stability. Smart meters with temperature compensation and the parameters of the power storage capabilities, single chip computer automatic operation look-up table method. More flow meter manufacturers choose model price quote you are welcome to inquire, here is no orifice variable frequency air flow meter scale application in formaldehyde production article details. Pick to: intelligent instrument can be set in a fine setting of various parameters and modification, and instrument internal no moving components, high reliability and stability. Smart meters with temperature compensation and the parameters of the power storage capabilities, single chip computer automatic operation look-up table method of correction, is to replace traditional digital table of a new generation of ideal products. 1 formaldehyde in the production of frequency conversion fan air flow sampling and fan energy saving problem many domestic formaldehyde production enterprises adopt the orifice intercept air pipeline pressure difference, use & other; U” Type glass tube differential pressure gauge to measure or by differential pressure transmitter via electronic integrating instrument. Due to the air supply pipe into the hole plate, the causes of 1000 ~ 3000 pa system resistance, make the fan energy consumption increases. Two hakaze resistance power consumption is about 0. 85 kw/kPa, 3 leaf blower resistance power consumption is 0. 8 kw / kPa。 Two years of hakaze machine electricity resistance of 7000 KWH/kPa, according to the electricity price is 0. 70 yuan/kWh calculation, needs more spending about $5000 a year/kPa electricity bills. A lot of the engineering and technical personnel of enterprises, in order to reduce resistance, air duct system adopted a secondary processing to reduce the hole diameter orifice resistance. Even with enlargement of measurement section of pipeline with large diameter of orifice plate method, the differential pressure reduced to less than 300 pa. But thousands of yuan, orifice less investment of transmitting unit and flow meter to ten thousand yuan, a year for orifice plate sample lost electricity some as high as 15000 yuan. We adopt frequency conversion speed governor control fan speed to achieve the purpose of adjusting the air flow rate, both economic and energy saving and convenient operation. Zhengyang river adhesive factory in Harbin, Harbin terms of chemical industry, that is suihua five sources, hejian, hebei province xin long factory, jilin chemical industry company cohesion, lang township forestry bureau in heilongjiang province industry and trade company particleboard factory units such as formaldehyde production line are installed on the frequency conversion governor, cancel the orifice differential pressure measurement methods at the same time, in oxygen can remotely control room. When load by an average of 70% a year, but power saving 49%, 30000 tons of formaldehyde plant province electricity of about 200000 yuan. If the country's 300 sets of formaldehyde device control fan switch frequency conversion governor, at least can save electricity from 3000 to 50 million yuan a year, ten years of about 500 million yuan. Terms of chemical industry in Harbin, 30000 tons of formaldehyde in the system, the early application of the low pressure difference orifice 120 ~ 250 pa, through intelligent digital meter to show with pressure compensation, after temperature compensation, the actual air flow. Through three years of operation monitoring show that the error in 0. 3%, but investment is higher, about 12000 yuan ( If the imported similar devices at higher prices) 。

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