Principle and design of ultrasonic flowmeter with plug-in positioning
Today, I will introduce a national invention authorized patent-ultrasonic flowmeter with plug-in positioning. The patent was applied for by Weihai Tiangang Instrument Co., Ltd., and the authorization was announced on September 18, 2018. The invention relates to the technical field of flow measurement, in particular to an ultrasonic flowmeter with plug-in positioning. As we all know, the existing ultrasonic flowmeter is composed of a flow tube body, a measuring tube body, a transducer mounting tube body, a positioning element, a reflecting mirror mounting seat, a reflecting mirror and a transducer. The side wall of the flow tube body is provided with Two transducers are installed with tube bodies and positioning holes, the flow tube body is provided with a measuring tube body, the transducer installation tube body is communicated with the flow tube body, and the flow tube body is connected to the measuring tube body via a positioning element Phase is fixed, the transducer tube body is provided with a transducer, the two ends of the measuring tube body are respectively equipped with a reflector mounting seat, the reflector mounting seat is provided with a reflector, the reflector and the transducer Correspondingly, the disadvantages of this structure are: 1. The positioning is not accurate enough due to the small diameter of the positioning element. Under the repeated impact of water, the positioning of the reflector mount in the measuring pipe section is unreliable. 2. Positioning holes need to be machined on both the flow tube body and the measuring pipe section, which increases the production cost and adds a leaking point at the same time. There is a hidden danger of leakage of the measuring medium during use. The purpose of the present invention is to solve the above-mentioned shortcomings of the prior art, and provide an ultrasonic flowmeter with plug-in positioning with novel structure, quick disassembly and assembly, accurate positioning, reliable fixation and high measurement accuracy. The technical solutions adopted by the present invention to solve its technical problems are: An ultrasonic flowmeter with plug-in positioning, comprising a flow tube body, a measuring tube body, a transducer mounting tube body, a reflecting mirror mounting seat, a reflecting mirror and a transducer, and is characterized in that the flow tube body and the reflecting mirror A positioning sleeve is provided between the mounting seats, the positioning sleeve is cylindrical, the center of the positioning sleeve is provided with an ultrasonic channel, the lower end of the positioning sleeve is provided with a positioning insert, and the positioning insert extends axially along the lower end of the positioning sleeve, In order to facilitate the positioning of the positioning sleeve on the reflector mounting seat, the side wall of the reflector mounting seat is provided with a positioning slot, the positioning insert is matched with the positioning slot, and the upper end of the positioning sleeve is tightly inserted into the transducer for installation In the tube body, and conflict with the transducer, the lower end is inserted and positioned with the positioning slot of the reflector mount via the positioning plug-in, which significantly improves the stability of the reflector mount and ensures the installation position of the reflector mount. The measurement accuracy is greatly improved, and at the same time, it is convenient to disassemble and assemble. The lower end surface of the positioning sleeve of the present invention is provided with a positioning curved surface, and the positioning curved surface is formed by two pairs of adjacent concave and convex portions that are connected in an arc transition with each other, so that the positioning curved surface of the positioning sleeve is in contact with the intersection. The outer wall of the tube section of the reflector mounting seat is matched with each other to further achieve precise positioning. The bottom surface of the positioning plug-in of the present invention is arc-shaped, and the radius of the bottom surface of the positioning plug-in is greater than or equal to the radius of the inner wall of the reflector mounting seat, so as to avoid turbulence to the fluid. Due to the adoption of the above structure, the present invention has the advantages of novel structure, quick disassembly and assembly, accurate positioning, reliable fixing, high measurement accuracy and the like. Thunderbolt 3 Cable Shenzhen GuanChen Electronics Co., Ltd. , https://www.gcneotech.com