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“双法兰液位差压变送器”是测量密闭容器液位的一次仪表,它在各油田都得到了广泛的应用。在大庆油田,该仪表一般设在室外,并安装在缓冲罐体的侧壁,外面设有保温箱。经十多年来的使用,该仪表存在着两个问题:①引压管线易冻,影响了仪表的精度,严重时使仪表失灵;②校表时需停运带压容器,造成停产。为了解决引压管的防冻问题,使仪表在寒冬也能达到测量精度,在大庆油田喇Ⅲ—
“Double-flange liquid level differential pressure transmitter” is a measure of the closed container level instrument, which has been widely used in various fields. In Daqing Oilfield, the instrument is generally located outdoors, and installed in the side walls of the buffer tank, with an incubator outside. After more than ten years of use, the instrument has two problems: ① pressure piping is easy to freeze, affecting the accuracy of the instrument, resulting in failure of the instrument in serious cases; ② need to stop the school when the pressure vessel with pressure vessels, resulting in the shutdown. In order to solve the problem of antifreeze tube, so that the instrument can reach the measurement accuracy in winter, in Daqing Oil Field La Ⅲ-