CORRUGATED-TUBE CONSTANT-PRESSURE CYLINDER APPARATUS HAVING NO MICROLEAKAGE AND METHOD FOR USING SAME

WIPO Patent Application WO/2016/175371

A1

The present invention relates to a corrugated-tube constant-pressure cylinder apparatus having no microleakage and a method for using the same and, more specifically, to a corrugated-tube constant-pressure cylinder apparatus having no microleakage and a method for using the same, capable of transport and storage while maintaining the pressure inside a cylinder at a constant pressure in a state where there is no microleakage. Namely, the present invention relates to a corrugated-tube constant-pressure cylinder apparatus having no microleakage and a method for using the same which maintain the pressure inside a cylinder at a constant with respect to materials in which gas and liquid co-exist at room temperature, such as refrigerant-mixed gas, a volatile organic compound (VOC), and a hydrocarbon mixture, thereby being capable of maintaining contents to be in a liquid state, or maintaining a constant pressure even when inner volume varies by means of contents inside the cylinder. To this end, the corrugated-tube constant-pressure cylinder apparatus having no microleakage of the present invention comprises: a fixing plate (100) which is formed of a circular iron plate having a predetermined thickness, wherein the fixing plate has a sample inlet (101) bored in the center portion thereof and is coupled to the bottom of a cylinder (200), thereby forming a chamber (a); the cylinder (200) which is formed of iron material and in the shape of a cylinder of which the bottom is opened and the top is closed, wherein the cylinder forms a flange (210), in which a plurality of coupling holes (211) are bored, on the outer periphery of the lower end thereof, and is coupled to the fixing plate (100), thereby forming the chamber (a); a coupling bolt (300) and a coupling nut (300') for forming the chamber (a) by joining and bolt-coupling the inner surface of the fixing plate (100) and the outer surface of the flange (210) at the bottom of the cylinder (200); a pressure gauge (400), coupled to a coupling pipe (226) of a pressure gauge coupling hole (224), for checking the pressure inside the chamber (a) for adjustment of the insertion amount of an inert gas; an opening-and-closing valve (500) provided at the sample inlet (101) and an inert gas inlet (223); and a sample chamber (b), provided inside the chamber (a), for storing a collected sample and generating and maintaining a constant pressure. In addition, the method for using the corrugated-tube constant-pressure cylinder apparatus having no microleakage of the present invention is characterized in that after collecting a certain amount of sample in the sample chamber (b) and locking the opening-and-closing valve (500), an opening-and-closing valve (500') of the inert gas inlet (223) of the cylinder (200) is opened and the inert gas is gradually inserted through the inert gas inlet (223), so that a corrugated tube (b10) of the sample chamber (b) varies as the insertion amount of the inert gas inside the chamber (a) increases, and the opening-and closing-valve (500') of the inert gas inlet (223) is closed when a certain pressure is created where the internal pressure of the chamber (a) and the internal pressure of the sample chamber (b) are in equilibrium. The corrugated-tube constant-pressure cylinder apparatus having no microleakage and the method for using the same of the present invention prevent causes of a gas leakage of the chamber and the sample chamber so as to maintain the pressure inside the sample chamber at a constant pressure state, and thus can enable highly reliable composition analysis by transporting the sample in the sample chamber to a laboratory while forming and maintaining the constant pressure state of a liquid phase so as to enable the composition of the sample to be analyzed by immediately mounting the sample on an analyzer.

WOO JIN CHOON (KR)
KIM YONG DOO (KR)
BAE HYEON GIL (KR)
GANG NAM GOO (KR)

PCT/KR2015/005619

November 03, 2016

June 04, 2015

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KOREA REARCH INST OF STANDARDS AND SCIENCE (KR)

G01N1/02; F16J3/06; G01N1/10; G01N1/22

WO2014088278A1

2014-06-12

US4862754A	1989-09-05
KR20150031015A	2015-03-23
US4922764A	1990-05-08
JP2537215Y2	1997-05-28

LEE, Jae Chil (KR)
이재칠 (KR)

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