Pig and steam flow meter application in papermaking

In the paper, detection of steam flow throttle flowmeter USES mostly. The device has many shortcomings, such as pressure loss, maintenance inconvenient ( Need to unpick and wash regularly orifice) There is no pressure, complex installation, compensation, etc. And new type of steam flowmeter of pig, overcome the above shortcomings, in our factory after years of use, reliable performance and good effect. 1. Pig the main characteristics of steam flowmeter other type of steam flowmeter, should have a testing instrument, installation guide pressure tube, such as: the pig steam flowmeter, simple structure, easy installation, use of high precision, which can be installed in a horizontal pipe can also be used in vertical pipe installation. Especially for the medium pressure automatic compensation. 2. Structure and working principle of the pig pig one by one by the steam flowmeter measurement, sensor and secondary instrument. By detecting element pig, according to the principle of 'Enoch delta P to detect the pressure difference is proportional to the square of the delta P and steam flow) , delta P signal into voltage signal by the sensor, can be converted to current by the converter. Give pressure compensator, compensator to accept the resistance value of pressure gauge to come at the same time the change of the signal, after the operation, to the integrator, cumulative flow, and at the same time give indicates a transient flow indicator. 3. Pig steam flowmeter using 3. 1 the flowmeter is suitable for the measurement, saturated steam and no corrosive gas pipeline in Ф 25 mm to 200 mm diameter. 3. 2 straight pipe required: installed at the front ( Air flow upstream) More than 10 times the diameter of length, the rear ( Air flow downstream) The length of more than 5 times the pipe diameter. 3. 3 pig components must be with the vertical pipe. 3. 4 is not suitable for outdoor. 3. 5 instantaneous flow conversion: the new type of steam flowmeter of pig, through the special design of pressure compensation operation electricity slightly, the pressure compensation, well solve the problem of the error, improves the accuracy of measurement, also facilitate installation, maintenance, use, and the price is cheap. In domestic paper mills, the new type of pig is not yet widely used steam flowmeter. Effect through the use of test in our plant, which fully shows: compared with the traditional flowmeter, the flowmeter is advanced, has a wide range of USES in the paper factory.

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