Several pressure-taking methods of throttling device

Abstract: The information of several pressure-taking methods of the throttling device is provided by the excellent flowmeter and flowmeter manufacturers. Pressure-taking methods of throttling device There are 5 kinds of pressure-taking methods of throttling device as far as orifice plate is concerned: angle-connecting pressure, flange pressure-taking, diameter-distance pressure-taking, theoretical pressure-taking and pipe-connecting pressure-taking. As far as the nozzle is concerned, there are only two types of angle contact pressure and radial distance pressure. (l) The corner connection is pressed up and down. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of several pressure-taking methods of the throttling device. The pressure taking method of the throttling device There are 5 kinds of pressure taking methods of the throttling device as far as the orifice plate is concerned: the angle connection pressure, the flange pressure, the diameter distance, the theoretical pressure and the pipe connection pressure. As far as the nozzle is concerned, there are only two types of angle contact pressure and radial distance pressure. (l) The distance between the axis line of the pressure-taking hole on the upper and downstream sides of the angular connection and the front and rear faces of the orifice plate (nozzle) is equal to half the diameter of the pressure-taking hole, or equal to half the width of the pressure-taking annular gap, so the pressure-taking hole The penetration point is exactly the same as the end face of the orifice plate, and the pressure taking of the corner connection includes the pressure taking of the annular chamber and the pressure taking of the separate drilling hole. (2) Flange pressure-taking The distance from the center of the pressure-taking holes on the upstream and downstream sides to the front and rear surfaces of the orifice plate is (25.4±0.8)mm. (3) The distance between the center of the pressure-taking hole on the upstream side and the front end surface of the orifice plate (nozzle) is 1D, and the distance between the center of the pressure-taking hole on the downstream side and the rear end surface of the orifice plate (nozzle) is 1/2D. (4) Theoretical pressure taking method The distance from the center of the pressure taking hole on the upstream side to the front end surface of the orifice plate is 1D ± 0.1D, and the distance from the center line of the pressure taking hole on the downstream side to the rear end surface of the orifice plate varies withβ=d/D value varies. (5) The centerline of the upstream pressure-taking hole of the pipe is 2.5D from the front end of the orifice plate, and the centerline of the downstream pressure-taking hole is 8D from the rear end of the orifice plate. Among the above five pressure-taking methods, the corner-joint pressure-taking method is the most used, followed by the flange-pressure-taking method. The main medium is gas, liquid and steam, and there is a fundamental difference in the pressure-taking positions of the three. For details, please refer to the design manual of the throttling device, or consult the relevant technical personnel of our company. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Several pressure-taking methods of throttling device'

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