Nowadays, many meters are equipped with smart meters, and the gas turbine flow meter of Dichuan Instrument is also one of them. The intelligent throttle device is a new generation flowmeter that integrates flow, temperature and pressure detection functions and can automatically compensate for temperature and pressure. The orifice flowmeter adopts advanced microcomputer technology and new micro-power technology, and has strong functions. Compact structure, easy operation and easy to use.
The output frequency of the vortex flowmeter is linear with the flow rate. When it integrates a control system with the regulating valve and the regulator, it is equivalent to a hysteresis with a time lag and a small time negligence, which can be regarded as a proportional link. The characteristics of the generalized object depend entirely on other links in the loop, and have little effect on the control system. The orifice plate is not. The metal tube float flowmeter has a linear relationship with the flow due to its output, and the loop gain varies with the flow rate, although it is utilized. Adjusting the flow characteristics of the valve to compensate for the linear influence of the generalized object, but the effect is not obvious. Therefore, the squarer must be introduced. Although the introduction of the squarer does not change the characteristics of the generalized object with the working point, the adjustment quality is obviously changed. However, the response is fast, sensitive, and easily causes an increase in system adjustment error at a small flow rate.
The fluid filled with pipes, when they flow through the throttling device in the pipe, the flow will form a local contraction at the throttle of the throttling device, thereby increasing the flow rate and the static pressure is low, so that the throttle is generated before and after the throttle The pressure drop, that is, the pressure difference, the greater the flow rate of the medium flow, the greater the pressure difference generated before and after the throttle, so the orifice flow meter can measure the flow rate by measuring the pressure difference. This measurement method is based on the law of energy conservation and the law of flow continuity.
The orifice flowmeter is a differential pressure generating device that measures flow. It can measure the flow of various fluids in the pipeline with various differential pressure gauges or differential pressure transmitters. The orifice flow meter throttling device includes a ring chamber orifice plate, a nozzle, and the like. The orifice flowmeter throttling device is used with the differential pressure transmitter to measure the flow of liquid, steam and gas. The orifice flowmeter is widely used in petroleum, chemical, metallurgy, electric power, light industry and other departments.
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