Today, I will introduce a national invention authorized patent-intelligent diving electromagnetic flowmeter. The patent was applied for by Jiangsu Leitai Automation Instrumentation Engineering Co., Ltd., and the authorization was announced on January 25, 2017.
Content descriptionThe utility model relates to an electromagnetic flowmeter, in particular to an intelligent diving electromagnetic flowmeter.
Background of the inventionIntelligent electromagnetic flowmeter is a speed type flow meter. It is a high-tech electromechanical product integrating signal detection and microelectronics intelligence. It has no flow resistance, no moving parts, accurate and stable measurement, and can measure conductive liquids, including acid, Volume flow of strong corrosive liquids such as alkali and salt, pulp, mud, waste water and solid-liquid two-phase suspension. This product is widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, papermaking and other industries, as well as environmental protection, municipal management, water conservancy construction and other fields. The electromagnetic flowmeters currently used mainly have the following shortcomings: due to the unreliable sealing of the overall structure, the internal excitation coils and electrodes are very susceptible to corrosion, resulting in poor sensitivity during use, inability to accurately output signals, and easy damage after long-term use. The service life is short; it is not easy to disassemble during maintenance, and the maintenance is more troublesome. The workload is large; the power consumption is large, the work is unstable, and the anti-interference ability is not strong; the automatic two-way flow measurement cannot be realized. Volume display, self-diagnostic failure alarm; not equipped with GSM data wireless remote transmission function, remote control function and storage function.
Summary of the inventionIn order to overcome the shortcomings of the prior art, the purpose of the present utility model is to provide an intelligent diving electromagnetic flowmeter.
The technical scheme adopted by the utility model is: an intelligent diving electromagnetic flowmeter, which includes a host and an electromagnetic flow sensor. The electromagnetic flow sensor is provided with a junction box, the host and the electromagnetic flow sensor are set separately, and the lead wire on the junction box Connected to a host, the host includes a microprocessor, and a power supply module, a data storage module, a signal conversion module, a wireless communication module, an alarm module, and an LCD display module connected to the microprocessor, the signal conversion module includes sequential The connected modulation amplifier circuit, filter circuit and A/D conversion circuit are used to receive the magnetic induction signal and temperature signal sent by the electromagnetic flow sensor.
Further, the electromagnetic flow sensor includes a pipe, and a temperature sensor on the wall of the pipe for detecting the temperature of the fluid and an electrode for detecting the electromotive force generated by the flow of the fluid. A ring of magnetic yoke is arranged on the outer side of the electrode. Excitation coils used to generate a magnetic field perpendicular to the direction of fluid flow are respectively arranged on both sides of the yoke, and a protective shell is arranged on the outer side of the yoke and the excitation coil. The junction box and the shell are integrally arranged, the junction box is a sealed structure, and the cable outlet of the junction box is sealed with underwater plugging glue. The microprocessor adopts a 16-bit embedded ultra-micro power processor. A real-time clock module is also connected to the microprocessor.
The beneficial effect of the utility model is that it is specially designed for industrial water, meets the requirements of urban water supply to ensure accurate water fee calculation, and is widely used in urban water supply (cold water), urban heating (hot water), sewage treatment, water conservancy projects and other industries. It is not disturbed by water quality, has no entanglement or blockage, almost no pressure loss, and can work continuously for a long time in water. Especially suitable for large flow heating. At the same time, it adopts 16-bit embedded ultra-micro power processor, full digital signal processing, stable work, high measurement accuracy, strong anti-interference ability, etc., realizes automatic two-way flow measurement, instantaneous flow on site, and cumulative total forward and reverse. Volume display, self-diagnosis fault alarm, GSM data wireless remote transmission and other functions, users can realize the wireless remote transmission and storage of flow data through the powerful GSM/GPRS remote management software system. And can realize the automatic switching of 3.6V/12V or 3.6V/220V multi-channel power supply. It also has wireless communication function and supports remote mobile phone remote control; friendly man-machine interface, which can track the operation of the instrument at any time; unique time display and real-time data storage function, no matter what the situation, it can ensure that internal data will not be lost and can be permanent Sexual preservation. In addition, the temperature sensor can instantly upload the fluid temperature and instantly calculate the enthalpy value in heating.
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