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本发明研制出充液压力计的温度补偿结构。选用厚度适当的有机玻璃作成压力计的玻璃窗,采用图1方式装配。当仪表内部的充液压力相对大气压增高时,仪表的玻璃窗如虚线所示那样,随着液体体积膨胀而向外扩张,从而增加了仪表壳体的容积,防止充液内压增高,也可达到温度补偿的效果。玻璃窗的比容积刚度(即与仪表充液容积增加百分数相应的表玻璃抵抗强度),应尽可能在0.007kg/cm~2以下,本发明一例是采用厚度为0.75mm,比容积刚度为
The present invention developed a liquid pressure gauge temperature compensation structure. Use the appropriate thickness made of plexiglass glass window, using Figure 1 way assembly. When the filling pressure inside the instrument relative to the atmospheric pressure increases, the instrument’s glass window as indicated by the dotted line, as the liquid volume expansion and outward expansion, thereby increasing the volume of the instrument case to prevent the filling liquid pressure increases, but also To achieve the effect of temperature compensation. The specific volumetric stiffness of the glass window (ie, the percentage of the sheet glass corresponding to the increase of the volume of the instrument liquid) should be as low as 0.007 kg / cm 2 or less as possible. One example of the present invention is to use a sheet having a thickness of 0.75 mm and a specific volumetric stiffness of