How to maintain the flow meter in winter

Abstract: The information on how to maintain the flow meter in winter is provided by the excellent flow meter and flow meter production and quotation manufacturers. How to maintain the flow meter in winter In winter, especially in winter in the north, with the decrease of temperature, when the measured medium is transmitted to the transmitter through the measurement pipeline, the phenomenon of freezing, solidification, precipitation and crystallization often occurs when the ambient temperature is too low , due to the environment. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on how to maintain the flowmeter in winter. How to maintain the flow meter in winter In winter, especially in winter in the north, with the decrease of temperature, when the measured medium is transmitted to the transmitter through the measurement pipeline, the phenomenon of freezing, solidification, precipitation and crystallization often occurs when the ambient temperature is too low , because the ambient temperature is too low and exceeds the normal working temperature range of the instrument used, which directly affects the accuracy of the instrument's measurement display. For various instrument points such as pressure, flow, liquid level, and temperature, the measurement medium is mostly liquid, which is more likely to cause measurement errors due to the influence of low temperature. In severe cases, it may lead to safety accidents such as poisoning, fire, and explosion. Therefore, in the winter every year, the cold and frost protection of instruments and meters is particularly important. And some large-scale instrument users are ready to deal with it in advance. For example, power plants, petroleum, chemical, water plants, etc. have formulated a system for the cold-proof and anti-freeze work of instruments suitable for their own enterprises, and anti-freeze and sewage treatment of instruments. And so on various aspects of work. In this issue, we will discuss how instrument users can prevent cold and frost in winter. 1. In order to do a good job of anti-freezing of instruments and meters, the selection of products is a key. When installing instruments in the early stage, instrument users should consider the working conditions of the instruments and choose instruments with thermal insulation devices. According to the type and use of the instrument and the geographical location to be installed, put forward the thermal insulation and antifreeze requirements of the instrument, and then submit it to the manufacturer for processing. 1. Insulation measures of the flowmeter are insulated with thermal insulation materials, that is, the parts of the instrument that are easy to freeze or are afraid of freezing are wrapped with thermal insulation materials. When winter comes, it is necessary to check and discharge frequently to prevent damage to the thermal insulation materials of the packaging. Heat tracing measures 1. Steam tracing measures: use pipe steam heating to keep warm. Check whether the steam insulation pipeline is unblocked or blocked before supplying steam with insulation in winter. It is best that the steam is open for 24 hours, not too hot, and sometimes it is necessary to adjust the amount of heat preservation steam according to the change of weather temperature, so as to prevent the temperature from being too high and causing the condensate in the pressure pipe of the transmitter to vaporize, which will affect the work of the transmitter or be caused by the temperature. If it is too low, the condensate in the pressure pipe of the transmitter will freeze and affect the smooth operation of the transmitter. 2. Measures for thermal insulation and protection box: a. Electric heating tube heat-tracing thermal insulation box is composed of three parts: box body, heater and instrument bracket. , The heating device is composed of an electric heating tube and a temperature controller. The side of the box is equipped with a socket. When the power is turned on, when the box is heated to the required temperature, the temperature controller is turned on to continue to heat up. Through repeated work, the temperature in the box can be maintained within a certain range. The main parameters of its constant temperature heater: ⑴, rated voltage 200V.50Hz; ⑵, rated power 300 ~ 500W; ⑶, the control temperature can be customized by the user; ⑷, the constant temperature heater can also be made into explosion-proof type; Species: namely copper pipe, carbon steel pipe, stainless steel pipe. b. Steam pipe heat tracing insulation box. The heat tracing pipe is made of metal pipe into an S-shaped structure. The upper and lower parts of the box are welded with welded through-plate joints and the heat tracing pipe. The circulation in the lumen achieves the purpose of heating. Heat tracing pipe materials are generally divided into two types, namely copper pipe and seamless steel pipe (carbon steel). c. Add another layer of thermal insulation cotton to the key instrument box, and add glue to seal the door of the incubator box and the inlet and outlet pipelines, which can achieve better thermal insulation and antifreeze effect of the instrumentation system. 3. Maintenance measures 1. Installation measures Reasonably choose the installation location: a dry place without rain and snow dripping. 2. When the spot inspection measures are available, a special person shall conduct technical confirmation and technical treatment on whether the insulation material is damaged and whether the steam pipeline is blocked every day. 3. Alarm measures If conditions permit, a small sound and light alarm device for steam leakage or power failure can be installed to facilitate the discovery and timely rectification of hidden dangers of thermal insulation and antifreeze measures. 4. Inspection measures shall be regularly inspected by the person in charge of regional instrument maintenance according to the scheduled inspection route. During the inspection, it is necessary to check whether the valve of the insulation pipeline is normal, whether the insulation box is normal, whether the drainage device is normal, whether the packaging of the insulation material is in good condition, and whether the electric heating power supply components are normal, etc. Carry out key inspections on the instruments of easy-to-freeze devices and make inspection records, carry out dry, complete and clean maintenance of instruments and instruments and their heat preservation and antifreeze measures, and solve the heat preservation and heat tracing problems that occur on site in a timely manner. 1) Before sending steam for heat preservation, check whether the heat preservation pipeline is unblocked.

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