U-shaped tube mass flowmeter resistant to strong acid and alkali corrosive medium and manufacturing method

Abstract

The invention belongs to the technical field of flowmeter manufacturing, and discloses a U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method. The sensor is fabricated by welding; the internal liquid-contacting part of the target coating sensor is filled with TEFZELTEFZEL materials, while the internal liquid contact part of the profiling coating sensor is filled with the same amount of TEFZEL material as the target coating sensor; the target coating sensor and profiling coating sensor are fixed on both sides of the fixed plate with V-shaped clamps and bolts, And according to the position of the center of gravity of the sensor, configure the corresponding counterweight to keep the center of gravity at the center of the fixed plate seat. The invention can measure some highly oxidative acids and alkaline media, and expands the application range of the mass flowmeter. The object-oriented anti-corrosion mass flowmeter is expanded, the roughness of the inner wall of the measuring tube is reduced, and it is more conducive to the flow state of the fluid medium in the pipeline.

Description

technical field [0001] The invention belongs to the technical field of flowmeter manufacturing, and in particular relates to a U-shaped tube mass flowmeter capable of resisting strong acid and alkali corrosive media and a manufacturing method. Background technique [0002] At present, the closest existing technology: With the continuous improvement of on-site technology in petrochemical enterprises, the industrial site requires not only accurate measurement, but also absolute safety when measuring. Corrosion resistance of measuring instruments is one of the important indicators related to the safety of industrial sites. Because in general, the industrial sites of petrochemical enterprises are explosive environments, if the instrument does not have a certain ability to withstand corrosion, leakage accidents will occur when corrosive media pass through, resulting in serious disasters on site. [0003] Most of the liquid-contacting pipes of mass flowmeters currently on the mar...

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Problems solved by technology

The existing technology is mainly to develop new metal materials to make steel pipes to improve anti-corrosion performance. At present, there is no solution in the same industry to solve related problems by using coating technology.

[0004] At the same time, if the technology of coating TEFZEL (its structural formula is [CH2-CH2-CF2-CF2]n, based on ethylene and tetrafluoroethylene) is to be applied to the mass flowmeter, after a lot of market research in the industry, TEFZEL can directly It is sprayed on the liquid contact part, but the prior art cannot solve the following problems at present: (1) the flow meter liquid contact pipe is in a U-shaped sealing state, and it is difficult to spray anti-corrosion materials on the inner wall of the spray pipe; (2) the thickness of the coating is thin and uniform problem

[0006] (1) The existing flowmeter liquid pipe is in a U-shaped sealed state, and it is difficult to spray anti-corrosion materials on the inner wall of the spray pipe

[0007] (2) The coating thickness of the existing spraying pipeline is uneven, the anti-corrosion performance is poor, and too much pipeline space is occupied

[0008] (3) The partial detachment of the existing coating from the metal substrate causes the signal distortion of the mass flowmeter, resulting in the loss of the function of the mass flowmeter

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