Piezoelectric pipe water flow electric generator

Abstract

The invention relates to a piezoelectric pipe water flow electric generator, and belongs to the technical field of electric generation. A fluid cavity and an energy capturing cavity are formed in a body, an inlet and an outlet are formed in the side wall of the fluid cavity, and a lower cover is installed at the end of the side wall of the fluid cavity; an upper cover is installed at the end of the side wall of the energy capturing cavity, a circuit board and transducers with magnetic blocks installed at the ends are installed on two steps on the inner side of the side wall of the energy capturing cavity, and each transducer is formed by two bent piezoelectric vibrators; a boss is arranged on a partition plate of the body and provided with guide grooves, a bearing hole and a cavity, and the magnetic blocks are arranged in the guide grooves of the boss; a main shaft is installed on the lower cover and the boss through bearings and provided with a magnetic ring and an impeller, and the magnetic blocks and the magnetic ring are installed in the mode that polarity-opposite magnetic poles are close. The piezoelectric pipe water flow electric generator has the advantages that the pre-bent piezoelectric vibrators are stimulated through non-contact magnetic coupling to be deformed for electric generation, movement parts are sealed in the fluid cavity, leakage is avoided, and a circuit system is high in running stability; piezoelectric plates only bear pressure stress, so that the mechanical reliability is high; the multiple piezoelectric vibrators are stimulated by the magnetic ring at the same time, the electric generation capacity is high, and noise is avoided.

Description

technical field [0001] The invention belongs to the technical field of energy recovery, and in particular relates to a piezoelectric pipeline water flow generator, which is used for power supply of a running water meter reading system. Background technique [0002] Tap water is an indispensable daily consumer product in the homes of urban residents, and the recording and statistics of its consumption are currently mainly done manually. The current manual meter reading operation is not only inefficient and wastes manpower and material resources, but more importantly, meter readers often go back and forth many times in vain because there is no one in the household, which seriously affects the accuracy and real-time performance of data statistics. Therefore, in recent years, people have developed various forms of tap water meter reading systems, such as Chinese patents 201310028760.9 and 200910083183.7. Although the data processing and transmission technology of the above-ment...

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Problems solved by technology

Although the data processing and transmission technology of the above-mentioned meter reading system has become increasingly mature, there is no report on its actual promotion and application. The meter reading system is pre-laid with cables, and the method of laying temporary open wires is difficult to be accepted by users due to certain potential safety hazards. When using battery power supply, the use time is limited and needs to be replaced frequently. Once the battery is low and not replaced in time, the information cannot be completed. The collection, processing and sending of

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