Extension-type Venturi tube and processing method and application method thereof
A Venturi tube and sleeve-type technology, which is applied in the direction of volume/mass flow generated by mechanical effects, fluid flow detection by measuring differential pressure, etc., can solve the problem of easy deformation, difficult work for Venturi tubes, and dangerous media with high working pressure etc. to achieve the effects of reducing leakage points, increasing compressive strength, and improving assembly accuracy
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[0016] Such as figure 1 As shown, a sleeve-type venturi tube of the present invention includes a venturi tube 8, and a venturi tube casing 1 is sheathed on the venturi tube.
[0017] The Venturi tube is composed of a front shrink tube 8-1, a middle tube 8-2 and a rear diffuser tube 8-3. Both ends are fixed in the casing.
[0018] The front part of the casing is provided with a positive pressure induction pipe 2, and a positive pressure taking and equalizing ring 3 is arranged between the positive pressure induction pipe and the casing; the middle part of the casing is provided with a negative induction pipe at the position corresponding to the middle part of the Venturi tube. The pressure pipe 5, the negative pressure introduction pipe seat 4 is arranged between the sleeve pipe and the negative pressure introduction pipe, the negative pressure taking and equalizing ring 7 is arranged on the middle pipe, and the metal Hose6.
[0019] The front end and the rear end of the cas...
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