High-pressure wedge type flowmeter for integrally forged wedge block

Abstract

The invention relates to a high-pressure wedge type flowmeter for an integrally forged wedge block. The high-pressure wedge type flowmeter is characterized by comprising a wedge-type flowmeter body, wherein the wedge-type flowmeter body comprises two connecting pipe sections, a wedge-shaped pipe section and two pressure-taking pipe sections; the two pressure-taking pipe sections are arranged on two sides of the wedge-shaped pipe section and are communicated with the wedge-shaped pipe section; the two connecting pipe sections are butted on the outer sides of the pressure-taking pipe sections respectively; and the connecting pipe sections, the wedge-shaped pipe section and the pressure-taking pipe sections are connected with one another in a welding manner. The high-pressure wedge type flowmeter satisfies the high-pressure and large-aperture requirements that nominal pressure is less than or equal to 42.0 MPa and nominal diameter ranges from DN15 to DN1000, the integral wedge type flowmeter has beautiful appearance, high dimensional precision, few welding points and few leakage sources, undergoes various performance tests, has high strength and good comprehensive mechanical properties, reduces the production process, decreases the production cost and conducts pressure tests which are completely in compliance with the requirements.

Description

technical field [0001] The invention relates to the technical field of flowmeter production, in particular to a high-pressure wedge flowmeter with an integrally forged wedge. Background technique [0002] Wedge flowmeters have been widely used in petroleum, chemical and other industrial fields at home and abroad. The fluid flow and differential pressure still follow the square root relationship when the Reynolds number is only 300. Shortcomings. It is used together with the double-flange differential pressure transmitter to make the pressure guiding pipeline of the wedge flowmeter more simple, and the use will not be affected by the accessories of the pressure guiding pipeline, so it can be widely used in cleaning, easy crystallization, easy Freezing, viscous, dirty, corrosive, abrasive and other demanding fluid flow. The basic principle of the wedge flowmeter is the same as other throttling devices. According to the energy conservation Bernoulli equation and the principle...

AI Technical Summary

Problems solved by technology

However, after on-site use, the user raised the quality of the connection strength of the pin structure. He believed that the strength of the pin would be affected due to the long-term vibration of the pipeline, and the pin was slightly careless in the filling welding. , which affects the wall thickness of the process pipe, the wall thickness of this position of the pipe measured on site is not enough, and the service life is low

[0005] In summary, in the existing technology, the traditional wedge flowmeter is mostly hoisted by welding nuts, and the pressure tap is in the form of a fillet weld. Nominal diameter DN15-DN600), and the spot welding of the wedge and the foot weld of the pressure tap cannot be tested by radiographic nondestructive testing

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