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1. 发明专利

JPS58187832A Densitometer 失效
标题翻译：密度计
公开(公告)号：JPS58187832A
公开(公告)日：1983-11-02
申请号：JP7037682
申请日：1982-04-28
申请人： Hitachi Ltd
发明人： HAMADA YOSHIYASU
IPC分类号： G01N1/00 , G01N7/00
CPC分类号： G01N7/00
摘要： PURPOSE:To detect the concentration of a liquid, by sampling a part of a liquid, and obtaining the temperature of the sampled liquid when the generation of gas is started, while reducing the pressure on the liquid. CONSTITUTION:A part of a liquid is sampled from a piping 1 through a by-pass pipe 2, and the pressure on the sampled liquid is reduced by means of a pressure- reducing valve 3. When the pressure is between a pressure P1 and a pressure P2, no gas is generated in the case where the liquid is supercooled. When the pressure drop by means of the pressure-reducing valve 3 is large, a gas is generated from the liquid to lower the liquid level in a tank 4. Therefore, decreasing the pressure-reduction amount by means of the pressure-reducing valve 3 from the time when the liquid level lowers, causes the generated gas to decrease in amount, thereby making it possible to find a point where the liquid level in the tank 4 no longer changes. The liquid level in the tank 4 is sensed by a liquid- level senser 7. Sensing the outlet temperature of the pressure- reducing valve 3 under the state where the liquid level in the tank 4 no longer changes, permits the concentration of the liquid to be obtained from a temperature T2 and the pressure P2. Accordingly, the concentration of the liquid can be detected by obtaining the saturation temperature through the changing of the pressure.
摘要翻译：目的：通过对液体的一部分进行取样来检测液体的浓度，并且在开始产生气体时获得采样液体的温度，同时降低对液体的压力。构成：通过旁通管2从管道1中取出液体的一部分，借助于减压阀3将取样液体的压力降低。当压力在压力P1和压力压力P2，在液体过冷的情况下不产生气体。当通过减压阀3的压降较大时，从液体产生气体以降低罐4中的液面。因此，通过减压阀3减小减压量从液面降低的时刻起，产生的气体量减少，从而可以找到罐4中的液面不再变化的点。罐4中的液位由液位传感器7感测到。在罐4中的液面不再改变的状态下，检测减压阀3的出口温度，允许液体浓度从温度T2和压力P2获得。因此，可以通过改变压力来获得饱和温度来检测液体的浓度。

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