YHS-3 Integrated Oil Water Monitoring Controller

YHS-3 Integrated Oil Water Monitoring Controller

YHS-3 Integrated Oil Water Monitoring Controller

I. Overview

The YHS-3 integrated oil mixed water online monitoring and transmission controller is used for real-time online monitoring of water content in oil systems of hydropower stations, thermal power plants, and large pumping stations. When the water content in the fuel tank and oil pipeline exceeds the alarm set value, an alarm signal is issued to remind the on duty personnel to check the system in a timely manner to ensure the safe operation of the generator set.

Two sets of alarm contacts (SPSD) with a contact capacity of 1A/AC220V

The device consists of two functions: capacitive sensors and online monitoring and processing. Capacitive sensors consist of inner and outer electrodes (equivalent to two plates of a capacitor) and circuit components. When water seeps into the oil, the capacitance value composed of the inner and outer electrodes changes significantly due to the large difference in dielectric constants between the two. The sensor circuit generates a stable high-frequency square wave. When the capacitance value changes, the frequency of the square wave changes. After processing and amplifying the signal, the sensor outputs the corresponding current signal.

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power stationThe air cooler and thrust bearing external circulation cooling water outlet pipe are equipped withXALTHYYXGSproductionXAFEA21The integrated electromagnetic flowmeter measures water flow rate. This electromagnetic flowmeter has high accuracy, stable performance, and low failure rate, which is conducive to the long-term operation of the power station. The electromagnetic flowmeter LCD head has instantaneous and cumulative flow display, and the parameters can be freely modifiedOne 4-20mA analog output, one switch output, and one pulse output.

On the water pipes of the upper guide, water guide, and main shaft seals, and on the oil pipes of the thrust outer circulation, respectivelyinstall8045 plug-in electromagnetic flowmeter and 8025 turbine flowmeter. The main features are: two adjustable flow switches and one 4-20mA analog output.

Install on the water pipes of the upper guide, water guide, and main shaft seals, as well as on the oil pipes of the thrust outer circulation, and on the branch pipesTCS-K-2Type flow switch. The measurement principle of flow switch is thermal conductivity, with two thermal resistors on the measuring probe, one of which measures the temperature of the medium; The other thermistor is heated, and when the liquid flows, it takes away heat, creating a certain temperature difference between the heated thermistor and the medium. The faster the medium flow rate, the greater the temperature difference. By measuring the temperature difference between the two resistors, a switch signal is sent out. The flow switch has no movable parts, the action value is adjustable, and the component model is not affected by changes in the measuring pipeline. The flow switch based on this measurement principle is now widely used in power stations. Feedback from the application of flow switches in several power stations by Guotou Hydropower Co., Ltd. shows that this meter can meet the requirements of installation conditions.