Talking about the fire water flow meter and its application field

Abstract: Talking about the fire water flow meter and application field information is provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. According to the provisions of Article 11.0.4 of the 'Technical Specifications for Fire Water Supply and Fire Hydrant Systems' GB50974-2014 Standard, a flow switch or pressure switch signal should be set on the outlet pipe of the high-level fire water tank to directly start the fire pump. due to weakness. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is a brief introduction to the details of the fire water flowmeters and applications. According to the provisions of Article 11.0.4 of the 'Technical Specifications for Fire Water Supply and Fire Hydrant Systems' GB50974-2014 Standard, a flow switch or pressure switch signal should be set on the outlet pipe of the high-level fire water tank to directly start the fire pump. Due to the loss of weak current signal, the reliability of starting the pump of the system is affected. Therefore, the necessity of starting the fire pump by the button of the fire hydrant box is low, and the investment of starting the pump by the button of the fire hydrant is relatively large. Therefore, the button of the fire hydrant should not be used as a direct signal for starting the pump, but only as an alarm. Signal. 2. The GB50974-2014 standard 11.0.4 also stipulates that the signals to directly start the fire pump are the flow switch and the pressure switch, and the reason is high reliability. The reliability of the water flow indicator is poor; the probability of malfunction is high; the water level signal of the high water tank has a hysteresis phenomenon; the signal can only be used as an alarm signal. The provisions stipulate that the flow switch and the pressure switch are used as the direct pump start signal of the fire pump. The flow switch is set within a certain flow value range. When the water level of the high water tank drops to a certain pressure, the pressure switch will assist in starting, which can realize the direct start of the pump and double insurance. . Interlocking is also possible. In order to reduce misoperation, the flow switch and pressure switch (when the water level in the water tank or the stabilizer pump cannot support the fire water consumption during a fire alarm, and the pressure switch will act when the pressure of the outlet pipe of the high-level water tank drops to the set value) simultaneously act as a direct pump start. reliable measure. The flow switch and pressure switch are usually set on the outlet pipe of the high-level water tank. The flow switch acts first, and the pressure switch acts after, so as to realize the double insurance of directly starting the pump, so it should be set“High-level water tank flow control direct-start fire pump device”. Fire water flowmeter is an inductive instrument that measures the volume flow of conductive medium. According to the principle of Faraday electromagnetic induction, a pair of detection electrodes are installed on the pipe wall perpendicular to the axis of the measuring pipe and the magnetic line of force. When the conductive liquid is along the axis of the measuring pipe When moving, the conductive liquid cuts the magnetic line of force to generate an induced potential, which is detected by two detection electrodes, and the value is proportional to the flow rate. In addition to measuring the volume flow of general conductive liquids, the fire water flow meter can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis, and uniform liquid-solid two-phase suspension liquids such as mud, ore pulp, and paper pulp. A pair of detection electrodes are installed on the vertical pipe wall of the special flowmeter for fire water. When the conductive liquid moves along the axis of the measuring pipe, the conductive liquid cuts the magnetic line of force to generate an induced potential, which is detected by the two detection electrodes. proportional. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis, and uniform liquid-solid two-phase suspension liquids such as mud, ore pulp, and paper pulp. Application fields of fire water pipeline flowmeter: 1. Water supply and drainage 2. Water conservancy and water resources 3. Petroleum, chemical industry 4. Energy saving monitoring, water saving management 5. Heat measurement, heat balance 6. Metallurgy, mining 7. Paper making, hull manufacturing Industry 8. Heating, power generation 9. Food and medicine 10. Flow inspection, flow tracking and collection The above is the entire content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'A Brief Discussion on Fire Water Flow Meters and Application Fields'

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