JP5421298B2 - Liquid sample container - Google Patents

Description

  The present invention relates to a liquid sample container that reduces volatilization.

  Conventionally, in order to calibrate a medium-sized flow meter and a large-sized flow meter used in chemical plants and steel plants, there are liquid flow rate calibration facilities of medium flow rate and large flow rate, respectively.

  An outline of a conventional liquid flow rate calibration facility will be described. FIG. 7 is a diagram showing an outline of a conventional liquid flow rate calibration facility. FIG. 8 is a diagram for explaining a weighing container 907 used in a conventional liquid flow rate calibration facility. In FIG. 7, the liquid flow rate calibration equipment guides the liquid from the test liquid tank 906 in which the liquid is stored to the test pipe line 908, and generates a stable flow in the test pipe line 908. The generated stable flow passes through the flow meter 905 provided in the test pipe 908 and flows into the weighing container 907 via the diverter 901 provided between the sample nozzle 902 and the weighing container 907. Thereafter, the liquid flow rate calibration facility switches the flow at a high speed by the diverter 901 after a predetermined time (inflow time) has elapsed, and stops the flow of the liquid into the weighing container 907. Then, the liquid flow rate calibration facility obtains the flow rate of the liquid per unit time from the inflow amount and the inflow time of the liquid that has flowed into the weighing container 907, and the flow rate is calculated based on the obtained flow rate and the flow rate measured by the flow meter 905. Calibrate the total 905. Further, as shown in FIG. 8, in a conventionally used container (a container such as a wide-mouth bottle or a flask), there is a distance from the tip of the sample nozzle 902 to the liquid surface of the sample container, and before reaching the bottom of the sample container. The first flow 921 becomes a fine dripping state 922 on the way and further scatters 923. The surface area of the liquid is increased by the scattering 923, and the volatilization amount is increased.

  In such a calibration device for the flow meter 905, in order to perform high-precision calibration of the flow meter 905 in a small flow rate region, the liquid flowing out from the sample nozzle 902 and flowing into the weighing container 907 reaches the weighing container 907. It is necessary to prevent volatilization before starting.

  Japanese Patent Application Laid-Open No. H10-228561 is known that suppresses the scattering of lubricating oil in the oil tank with respect to the volatilization of the liquid. The technique disclosed in Patent Document 1 is used in a lubrication device for a dry sump type internal combustion engine, is provided separately from the engine body of the internal combustion engine, and uses a centrifugal force for lubricating oil returned from the engine body. In an oil tank equipped with a gas-liquid separator that gives liquid separation action, discharges the obtained bubbles from the gas discharge port, and discharges the remaining lubricating oil from the liquid discharge port, the liquid discharge port is stored in the oil tank. The remaining lubricating oil that is disposed between the liquid outlet and the wall surface of the oil tank and changes the flow direction of the remaining lubricating oil discharged from the liquid outlet to the direction of turning in the oil tank. A guide is provided.

JP 2006-291848 A

However, the technique disclosed in Patent Document 1 is a technique for suppressing scattering of lubricating oil in an oil tank, and the flow of a liquid whose flow is switched by a diverter to calibrate a flow meter in a small flow rate range. It is not a technique for suppressing volatilization flowing into the container.
In calibration of the flow meter, it is conceivable to measure and correct the volatilization amount per unit time, but the volatilization amount of the liquid falling from the narrow tube nozzle in the small flow rate region has accumulated in the container. Unlike the volatilization amount of liquid, it is difficult to measure in advance in the same container and the same environment.

  Therefore, there is a need for a container that reduces the volatilization of the liquid flowing out from the narrow tube nozzle.

  An object of this invention is to provide the liquid sample container which reduces the volatilization of the liquid which flowed out from the thin tube nozzle.

  The present invention provides the following solutions.

  (1) A liquid sample container having a container part for storing a liquid that flows out from a capillary tube in a continuous flow, and a cylindrical part fixed to an inlet of the container part, and an inner part of the cylindrical part A liquid plate that is fixed and formed so that the liquid flows in one direction, and the liquid that has flowed out of the narrow tube nozzle flows in the one direction, drops from the tip of the metal plate, and the cylinder A liquid sample container that accumulates in the container part from a predetermined gap between the lower end of the shape part and the bottom of the container part.

According to the configuration of (1), the liquid sample container according to the present invention is formed so that the liquid flows in one direction, fixed to the inside of the cylindrical part fixed to the inlet of the container part and the cylindrical part. A patch plate. Then, the liquid flowing out from the narrow tube nozzle flows in one direction on the contact plate, drops from the tip of the contact plate, and accumulates in the container portion through a predetermined gap between the lower end of the cylindrical portion and the bottom of the container portion.
Therefore, the liquid sample container according to the present invention can reduce the volatilization of the liquid flowing out from the thin tube nozzle.

  (2) The shape of the said contact plate is a liquid sample container as described in (1) which becomes the shape where the center part became depressed as it goes in the direction where a liquid flows.

  Therefore, the liquid sample container according to (2) can further reduce the volatilization of the liquid flowing out from the thin tube nozzle.

  According to the present invention, it is possible to reduce the volatilization of the liquid flowing out from the thin tube nozzle.

It is a figure which shows an example of the liquid sample container which is one Embodiment of this invention. It is a figure explaining the flow of the liquid in the liquid sample container which is one Embodiment of this invention. It is a perspective view of the liquid sample container which is one Embodiment of this invention. It is a figure which shows the result of having measured the volatilization amount using the liquid sample container which is one Embodiment of this invention. It is a figure which shows the shape of the contact plate in the liquid sample container which is one Embodiment of this invention. It is a figure which shows an example of the liquid sample container which is another one Embodiment of this invention. It is a figure which shows the outline | summary of the conventional liquid flow volume calibration equipment. It is a figure explaining the weighing container used with the conventional liquid flow volume calibration equipment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a liquid sample container 10 according to an embodiment of the present invention. The liquid sample container 10 includes a cylindrical portion 501 fixed to the inlet of the container portion 510, and a contact plate 502 fixed inside the cylindrical portion 501 and formed so that the liquid flows in one direction.

  The cylindrical portion 501 has, for example, a cylindrical shape with a length of 150 mm and an inner diameter of 15 mm. The container part 510 has a capacity of 50 ml, for example. The contact plate 502 is installed at a predetermined angle 5023 so that the liquid flows in one direction. As shown in FIG. 1, the cross section of the contact plate 502 has a shape 5022 that is recessed in an arc shape so as to flow in one direction and reduce the surface area of the liquid in contact with air. Further, the flat surface of the contact plate 502 has a shape 5022 in which the central portion is depressed and the shape 5021 in which the central portion becomes narrower as the liquid flows from the contact plate 502 in the droplet state 511 in the flowing direction. ing.

  FIG. 2 is a diagram for explaining the flow of the liquid in the liquid sample container according to the embodiment of the present invention. The liquid that has flowed out from the tip of the thin tube nozzle 201 at a predetermined distance 521 from the liquid surface of the liquid sample container 10 hits the contact plate 502 in a continuous flow 96 and flows in one direction to the tip of the contact plate 502. The liquid drops in a drop state 511 and accumulates in the container portion 510 from a predetermined gap between the lower end 5011 of the cylindrical portion 501 and the bottom 5101 of the container portion 510. As described above, the liquid sample container 10 applies the continuous flow 96 to the contact plate 502 before the continuous flow 96 of the liquid flowing out from the narrow tube nozzle 201 starts to scatter, and then the continuous flow 96 is applied along the contact plate 502. The amount of volatilization can be reduced by reducing the surface area of the liquid that comes into contact with the air without being scattered and dropping the inside of the cylindrical portion 501.

  FIG. 3 is a perspective view of a liquid sample container according to an embodiment of the present invention. As shown in FIG. 3, the liquid flowing out from the thin tube nozzle 201 remains in the continuous flow 96 and hits the contact plate 502 fixed to the inside of the cylindrical portion 501, flows in the contact plate 502 in one direction, Drop in the drop state 511 from the beginning.

  FIG. 4 is a diagram showing the results of measuring the volatilization amount at a flow rate of 0.3 L / h using the liquid sample container according to the embodiment of the present invention. FIG. 4 shows a result of measuring the volatilization amount with the distance from the tip of the thin tube nozzle 201 to the liquid surface of the liquid sample container 10 being 30 mm as a reference. As shown in FIG. 4, in the case of the conventional weighing container 907 until the liquid drops 140 mm from the tip of the thin tube nozzle 201 to the liquid surface of the liquid sample container 10, the volatilization amount of the liquid is the total flow amount. In contrast, in the case of the liquid sample container 10, the volatilization amount of the liquid is reduced to a negligible amount.

  FIG. 5 is a diagram showing the shape of the contact plate in the liquid sample container according to the embodiment of the present invention. When the contact plate 502 is a flat plate, the liquid spreads and the liquid surface area 99 in contact with the air increases. Therefore, as shown in FIG. 5A, the cross section of the contact plate 502 has an arcuate shape 5022. . Further, as shown in FIG. 5B, a shape 5024 bent in a square shape may be used. Regardless of the shape of the contact plate 502 shown in FIG. 5A or FIG. 5B, the liquid surface area 99 can be reduced.

  FIG. 6 is a diagram illustrating an example of the liquid sample container 10 according to another embodiment of the present invention. In the liquid sample container 10, an alignment plate 505 having a cross-sectional shape 5051 that is obliquely fixed to the inside of the cylindrical portion 501 and is bent in a square shape is placed up to the bottom 5101 of the container portion 510 and dropped from the contact plate 502. The liquid is not dropped to the bottom 5101 of the container 510, but is allowed to flow along the leveling plate 505 to further reduce the volatilization amount.

  According to the present embodiment, the liquid sample container 10 includes a cylindrical part 501 fixed to the inlet of the container part 510 and an inner side fixed to the cylindrical part 501 so that the liquid flows in one direction. A plate 502. The liquid flowing out of the narrow tube nozzle 201 flows in one direction through the contact plate 502 and drops from the tip of the contact plate 502, and a predetermined gap between the lower end 5011 of the cylindrical portion 501 and the bottom 5101 of the container portion 510. To the container 510. Furthermore, the shape of the contact plate 502 is a shape 5022 in which the central portion is recessed as the liquid flows, and a shape 5021 in which the central portion becomes thinner. Furthermore, the liquid sample container 10 causes the liquid dripped from the contact plate 502 to flow to the bottom 5101 of the container portion 510 along the conforming plate 505 whose section is bent in a square shape. Therefore, the liquid sample container 10 can reduce the volatilization by guiding the liquid flowing out from the thin tube nozzle 201 to the container unit 510 by reducing the liquid surface area without scattering.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

DESCRIPTION OF SYMBOLS 10 Liquid sample container 201 Narrow tube nozzle 501 Cylindrical part 502 Batting plate 510 Container part

Claims (2)

A liquid sample container having a container part for storing a liquid flowing out from the capillary nozzle in a continuous flow;
A cylindrical part fixed to the inlet of the container part;
A caulking plate fixed to the inside of the cylindrical portion and formed so that the liquid flows in one direction,
The liquid that has flowed out of the narrow tube nozzle flows in one direction on the abutting plate, drops from the tip of the abutting plate, and the container portion from a predetermined gap between the lower end of the cylindrical portion and the bottom of the container portion. Accumulated in the
Liquid sample container.   2. The liquid sample container according to claim 1, wherein the shape of the contact plate is a shape that becomes narrower in a shape in which a central portion is recessed as the liquid flows.

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