在温度变化的条件下,管道热膨胀双金属补偿器的补偿性能具有补偿器一端对另一端产生横向位移的特点。补偿性能以所用材料的直线膨胀系数差为条件。但在某些文献中,关于直线膨胀系数的记载各不相同,在计算中采用就不能正确反映该系数差,直接影响到膨胀性能的准确计算。为了取得膨胀系数差的准确数 Under the condition of temperature change, the compensating performance of the pipe thermal expansion bimetallic compensator has the characteristic that one side of the compensator produces lateral displacement to the other side. The compensation performance is based on the difference in linear expansion coefficient of the material used. However, in some literatures, the records of linear expansion coefficients are different, which can not be accurately reflected in the calculation, which directly affects the accurate calculation of expansion performance. In order to obtain the exact number of expansion coefficient difference