TW201516390A - Dissolved gas concentration measurement device and dissolved gas concentration measurement method - Google Patents

Abstract

The present invention provides a dissolved gas concentration measurement device and a dissolved gas concentration measurement method, capable of easily and reliably continuous measuring the concentration of the gas that is being dissolved in the liquid. In the dissolved gas concentration measurement device, a first container (11) has a fixed free space (18a) other than the liquid and has inlet holes (14) that allows external air to flow into the free space (18a). Dissolved gas that is separated from the liquid is mixed with the external air flowing through the inlet holes (14). The mixed gas is fed to a concentration sensor (3).

Description

Dissolved gas concentration measuring device and method for measuring dissolved gas concentration

The present invention relates to a dissolved gas concentration measuring device and a dissolved gas concentration measuring method for measuring the concentration of a dissolved gas dissolved in a liquid.

In the above-mentioned Patent Document 1, as shown in the following Patent Document 1, a method for measuring the dissolved hydrogen concentration of hydrogen water by an oxidation-reduction potential measuring means is known (refer to paragraph [0021] of Patent Document 1] ).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-218885

Here, the hydrogen water may contain dissolved air in addition to the dissolved hydrogen. Therefore, in the conventional dissolved gas concentration measuring device, the pure water is introduced into the degassing module in advance to perform the degassing treatment, and then the hydrogen is dissolved. The dissolved hydrogen concentration of the hydrogen water generated in such a manner that the concentration becomes a predetermined range.

As described above, in the conventional dissolved gas concentration measuring apparatus, it is extremely difficult to measure the concentration of a specific dissolved gas when a plurality of gases are being dissolved in a liquid.

On the other hand, when a plurality of gases are dissolved in a liquid, it is also considered to perform a degassing treatment on the liquid to separate the liquid and the dissolved gas, and to measure the concentration of the specific dissolved gas from the separated dissolved gas, but the degassing treatment is performed. It must be carried out in a closed container, so it is extremely difficult to continuously measure the concentration of a specific dissolved gas.

That is, even if the dissolved gas can be continuously separated by the degassing treatment, the continuously separated dissolved gas continues to remain in the sealed container, so that the concentration of the specific dissolved gas cannot be measured.

In view of the above circumstances, it is an object of the invention to provide a dissolved gas concentration measuring device and a dissolved gas concentration measuring method which can continuously and reliably measure the concentration of a dissolved gas which is dissolved in a liquid.

The dissolved gas concentration measuring device according to the first aspect of the present invention is a device for measuring a dissolved gas concentration measuring a concentration of a dissolved gas dissolved in a liquid, comprising: a container for storing the liquid; and an apparatus for imparting exercise energy; The liquid imparts kinetic energy; the concentration sensor determines the separation of the dissolved gas from the liquid by the kinetic energy imparted by the kinetic energy imparting means. a concentration of the separation gas; and a supply means for supplying the separation gas to the concentration sensor, wherein the container is a free space occupied by the liquid other than the liquid, and has an intake hole through which external air can flow into the free space. In the supply means, when the separation gas is supplied to the concentration sensor, external air flows in from the intake hole, and a mixed gas in which the separation gas and the outside air are mixed is supplied to the concentration sensor.

According to the dissolved gas concentration measuring apparatus of the first aspect of the present invention, the dissolved gas is separated from the liquid by the kinetic energy of the liquid, and the separated gas is mixed with the external air flowing in through the intake hole to form a mixed gas. In the state of the gas, the concentration of the dissolved gas was measured by a concentration sensor. Therefore, it is possible to continuously measure the concentration of a specific dissolved gas while mixing the separation gas with the outside air without supplying the inside of the container to the concentration sensor.

As described above, according to the dissolved gas concentration measuring apparatus of the first aspect of the invention, the concentration of the dissolved gas dissolved in the liquid can be continuously and reliably measured.

According to a second aspect of the present invention, in the first aspect of the invention, the kinetic energy providing means imparts kinetic energy to the liquid and molecules of the dissolved gas by imparting kinetic energy to the liquid. And separating the dissolved gas from the liquid, and increasing the contact between the liquid and the dissolved gas and the external air to separate the liquid from the liquid The dissolved gas increases.

According to the dissolved gas concentration measuring apparatus of the second aspect of the invention, it is difficult to make the liquid in the liquid when the outside air can flow into the intake hole of the container and the outside air flows in, compared with the degassing process in which the vacuum suction is performed in the sealed container. The dissolved gas is sufficiently separated by the liquid, by imparting kinetic energy to the liquid, imparting kinetic energy to the molecules of the liquid and molecules of the dissolved gas, separating the dissolved gas from the liquid, and increasing the contact between the liquid and the dissolved gas and the outside air. Thereby, the separation of the dissolved gas from the liquid can be promoted.

As described above, in the dissolved gas concentration measuring apparatus according to the second aspect of the invention, when the concentration of the dissolved gas dissolved in the liquid is continuously measured, the separation of the dissolved gas from the liquid can be promoted, and the concentration of the dissolved gas can be reliably measured.

According to a second aspect of the present invention, in the second aspect of the invention, the kinetic energy imparting means is configured to cause the liquid to collide and diffuse in the container by the kinetic energy imparted to the liquid. This increases the contact of the liquid and the dissolved gas with the aforementioned outside air to increase the dissolved gas separated by the liquid.

According to the dissolved gas concentration measuring apparatus according to the third aspect of the invention, the liquid energy and the dissolved gas are actually externally dispersed in the container by the kinetic energy imparted to the liquid, for example, colliding with the inner surface of the container or the like. The contact of the air is increased to promote the separation of the dissolved gas from the liquid.

According to a second aspect of the present invention, in the second aspect of the invention, the apparatus for measuring a dissolved gas concentration is characterized in that the kinetic energy imparting means is configured to cause the outer space in the liquid The gas is released to agitate the liquid, whereby the contact between the liquid and the dissolved gas and the outside air is increased to increase the dissolved gas separated by the liquid.

According to the dissolved gas concentration measuring apparatus of the fourth aspect of the invention, the outside air is released in the liquid to agitate the liquid, whereby the contact between the liquid and the dissolved gas and the outside air is actually increased, and the separation of the dissolved gas from the liquid can be promoted.

According to a fourth aspect of the present invention, in the fourth aspect of the invention, the kinetic energy providing means is configured to pass the liquid to the liquid by the kinetic energy imparted to the liquid. The bank of the occupied area causes the liquid to fall, whereby the contact between the liquid and the dissolved gas and the outside air is increased to increase the dissolved gas separated by the liquid.

According to the dissolved gas concentration measuring apparatus of the fifth aspect of the present invention, the liquid is allowed to fall over the bank in the region occupied by the predetermined liquid in the container by the kinetic energy supplied to the liquid, thereby actually causing the liquid and the dissolved gas to be externally The contact of the air is increased to promote the separation of the dissolved gas from the liquid.

The method for measuring a dissolved gas concentration according to the sixth aspect of the invention is a method for measuring a dissolved gas concentration for measuring a concentration of a dissolved gas dissolved in a liquid, characterized by comprising: a kinetic energy imparting project for imparting kinetic energy to the liquid; In the container for accommodating the liquid, the dissolved gas is imparted by the kinetic energy imparted to the project by the kinetic energy. Separating the liquid from the liquid; mixing the mixture, the separation gas separating the dissolved gas from the liquid by the separation process, and the external air flowing in from the suction hole of the container; Measuring the concentration of the dissolved gas of the mixed gas in which the separation gas and the outside air are mixed by the mixing process; and the concentration calculation process by supplementing the mixed gas measured in the measurement process The concentration of the dissolved gas is used to calculate the concentration of the dissolved gas that is dissolved in the liquid.

According to the method for measuring a dissolved gas concentration according to the sixth aspect of the invention, the kinetic energy is applied to the liquid, the dissolved gas is separated from the liquid, and the separated gas is mixed with the outside air flowing in through the intake hole to form a mixed gas. In the state of the gas, the concentration of the dissolved gas was measured by a concentration sensor. Therefore, it is possible to continuously measure the concentration of a specific dissolved gas while mixing the separation gas with the outside air without supplying the inside of the container to the concentration sensor.

Then, in the state of the mixed gas, the concentration of the dissolved gas measured by the concentration sensor is corrected so as to be converted into the concentration of the dissolved gas in the liquid, whereby the liquid is dissolved in the liquid. The concentration of dissolved gases.

As described above, according to the method for measuring the dissolved gas concentration of the sixth aspect of the invention, the concentration of the dissolved gas dissolved in the liquid can be continuously and reliably measured.

1‧‧‧ container

2‧‧‧Liquid pump (motor energy giving means)

3‧‧‧Concentration sensor (hydrogen concentration sensor)

4‧‧‧Air pump

5‧‧‧Filter

10‧‧‧Circular Road

10a‧‧‧ Release tube

10b‧‧‧ suction pipe

10c‧‧‧bubble pump (motor energy giving means)

11‧‧‧1st container

12‧‧‧ second container

13‧‧‧Nozzles

14‧‧‧ suction holes

15‧‧‧Connected pipe

16‧‧‧Connected tube

17‧‧‧Drainage

18, 18a, 18b‧‧‧ free interval

19‧‧‧堰

Fig. 1 is an explanatory view showing a dissolved gas concentration measuring apparatus of the present embodiment.

Fig. 2 is an explanatory view showing measurement results of the dissolved gas concentration measuring device of Fig. 1;

Fig. 3 is an explanatory view showing the correlation between the measurement results of the dissolved gas concentration measuring device of Fig. 1 and the measurement results obtained by other measuring devices.

Fig. 4 is an explanatory view showing a modified example of the dissolved gas concentration measuring apparatus of the embodiment.

As shown in Fig. 1, the dissolved gas concentration measuring apparatus according to the present embodiment is a device for measuring the concentration of dissolved gas dissolved in a liquid, and includes a container 1 for storing a liquid, and a means for imparting exercise energy to the liquid. a liquid delivery pump 2; a concentration sensor 3 for measuring the concentration of dissolved gas; a gas delivery pump 4 for supplying a dissolved gas (separation gas) separated by a liquid to the concentration sensor 3; and a gas supply pump A filter 5 for removing moisture between the pump 4 and the container 1.

The container 1 is provided with a first container 11 and a second container 12.

The first container 11 is a bottomed cylindrical container that introduces a liquid to which kinetic energy is supplied, and includes a nozzle 13 as a liquid ejection port, an air intake hole 14 for external air, and a communication tube 15 that communicates with the filter 5; And with 2 The connecting tube 16 to which the container 12 is connected.

The nozzle 13 discharges the liquid supplied from the liquid supply pump 2 to the discharge port of the container, and is provided above the liquid level of the liquid in the first container 11 and at the side position below the intake hole 14.

The tip end of the nozzle 13 faces the opposite side surface, and the nozzle diameter is set by the pressure, the flow rate, and the flow velocity of the liquid feed pump 2 so that the liquid colliding with the opposite side surface is diffused and separated into a liquid and a dissolved gas.

More specifically, the nozzle diameter of the nozzle 13 is reduced so that the concentration region of the concentration of the separation gas can be measured by the concentration sensor 3.

The intake hole 14 is an intake hole through which the outside air can flow into the first container 11, and is provided above the nozzle 13 and at a side surface position below the communication pipe 15.

The diameter of the suction hole 14 is adapted to be diluted with the outside air mixed with the separation gas, and is preferably configured to have an adjustable diameter. Further, the air intake hole 14 is preferably provided on the side surface of the first container 11 on the same side as the nozzle 13 so that the liquid (fogging liquid) which is diffused against the opposite side surface is not mixed with the outside air.

The communication pipe 15 is provided, for example, in the ceiling portion of the first container 11, and the mixed gas of the separation gas and the outside air that has flowed in through the intake holes 14 is introduced into the filter 5 by the air pump 4 by the first container 11.

One end of the connecting pipe 16 is provided on the bottom surface of the first container 11, and the other end is provided on the bottom surface of the second container 12, and the liquid in the first container 11 and the liquid in the second container 12 can flow out from each other.

The second container 12 is a container that is provided in parallel with the first container 11 (for example, has the same bottomed cylindrical shape as the first container 11), and a drain port 17 for drainage is provided on the side surface thereof.

Since the height position of the drain port 17 determines the liquid level of the liquid in the first container 11, it is provided at a position slightly below the nozzle 13 of the first container 11.

In other words, the liquid in the first container 11 and the liquid in the second container 12 can flow out of each other. Therefore, if there is a difference in height between the liquid in the first container 11 and the liquid in the second container 12, The gravity is equivalent to the difference in gravity of the liquid to eliminate the difference, and the liquid flows in through the connecting pipe 16 and flows in. Therefore, the liquid level of the liquid in the first container 11 and the second container 12 is always the same, and the liquid level is determined by the drain port 17 which is discharged at a certain liquid level.

Thereby, since the liquid level of the first container 11 is at a certain level determined by the drain port 17, the free space 18a occupied by the liquid in the first container 11 is always constant.

Among them, in the second container 12, the free space 18b occupied by the liquid is also constant in a constant volume. Further, in the free space 18b of the second container 12, an open hole or the like may be provided as needed to prevent the pressure from rising.

Next, the method for measuring the dissolved gas concentration by the dissolved gas concentration measuring apparatus configured as described above is an example of a method of measuring the hydrogen concentration in the hydrogen water when hydrogen as a dissolved gas is dissolved in water as a liquid. Be explained.

In Fig. 1, the hydrogen water system is first given to the first by the liquid feed pump 2 The kinetic energy in the direction of the container 11 is supplied to the nozzle 13 (corresponding to the kinetic energy imparting project of the present invention).

Then, the hydrogen water supplied to the nozzle 13 is ejected from the front end of the nozzle 13 on the inner side surface of the opposing first container 11, and the hydrogen water colliding with the inner side surface is diffused, whereby the hydrogen being dissolved is continuously Hydrogen water separation (corresponding to the separation process of the present invention).

Hydrogen which is continuously and continuously separated by hydrogen water is mixed with the outside air which flows in from the intake hole 14 of the first container 11 by the air pump 4, and is supplied to the filter 5 through the communication pipe 15 (equivalent to Hybrid engineering of the present invention).

The mixed gas system of hydrogen and external air supplied to the filter 5 is dehydrated by the filter 5. Thereby, the mist-like hydrogen water which is attracted together with the mixed gas can be removed by the injection of the hydrogen water from the nozzle 13 in the first container 11 or the diffusion of the hydrogen water by the collision with the inner side surface.

The concentration of hydrogen in the mixed gas is measured by a concentration sensor (hydrogen concentration sensor) 3 by a mixture gas system in which the mixed gas is removed from the mixed gas such as hydrogen water (corresponding to the measurement project of the present invention) .

Here, the hydrogen concentration measured by the concentration sensor 3 is diluted with hydrogen which is separated by hydrogen water in the first container 11 by the outside air which flows in from the suction holes 14. Therefore, in order to accurately measure the hydrogen concentration, it is necessary to keep the dilution ratio constant. In the first container 11, the free space 18a occupied by the hydrogen water is always a constant volume, so that the air pump 4 is made constant. The number of rotations drives a certain amount of external air to be taken into a certain volume to be diluted, so that the hydrogen continuously separated in the first container 11 is continuously and continuously Dilute in a certain ratio, and the concentration can be continuously measured by the concentration sensor 3.

The measurement results of the hydrogen concentration measured by the concentration sensor 3 as described above are shown in Fig. 2 . In Fig. 2, the horizontal axis represents the elapsed time, and the vertical axis represents the measured value of hydrogen concentration [ppb], and the hydrogen water of two types of dissolved hydrogen concentrations indicated by the line A (A') and the line B (B') are alternated. The measurement result of the measurement.

Among them, the line A (A') and the line B (B') decrease with elapse of time because the liquid is in contact with the air even if the kinetic energy is imparted to the hydrogen water and the hydrogen is not actively separated. Hydrogen is naturally separated on the surface of hydrogen water or the like. Here, the line A (A') and the line B (B' are calculated based on the measured value of the continuously decreasing hydrogen concentration measured by another measuring device (measured value measured by introducing hydrogen water into the batch type measuring device). ).

In Fig. 2(a), line A shows hydrogen water A having an initial hydrogen concentration of 180 [ppb], and line B shows hydrogen water B having an initial hydrogen concentration of 120 [ppb], which is alternately measured by concentration sensor 3. The results of the two types of hydrogen water with different concentrations.

In FIG. 2(a), first, the hydrogen water A is introduced into the first container 11 by the liquid feed pump 2, and then the hydrogen water B is introduced into the first container 11 by the liquid feed pump 2. Then, the hydrogen water A and the B are continuously switched and introduced into the first container 11.

As a result, the hydrogen ions A and B are continuously switched to each other, and the measured value is reciprocated on the line A side and the line B side, and the relationship between the line A and the line B can be confirmed in the area surrounded by the broken line in the drawing.

Similarly, in Fig. 2(b), line A' shows hydrogen water A' having an initial hydrogen concentration of 205 [ppb], and line B' shows an initial hydrogen concentration of 157 [ The hydrogen water B' of ppb] was measured by the concentration sensor 3 to measure the two types of hydrogen water having different concentrations.

As a result, the hydrogen waters A' and B' are continuously switched to each other, and the measured value is reciprocated on the line A' side and the line B' side, and the area surrounded by the broken line in the figure can be confirmed with the line A' and the line B'. relationship.

Here, in FIGS. 2(a) and 2(b), the measurement results of the broken line area in the figure are measured to be lower with respect to the line A (A') and the line B (B'), but this is due to the outside air. The dilution ratio may be matched with the line A (A') and the line B (B') in advance by performing the correction described later.

As described above, the dissolved gas concentration measuring apparatus of the present embodiment can continuously and reliably measure the concentration of a specific dissolved gas (hydrogen) which is dissolved in hydrogen water.

Next, a method of correcting the measured value of the concentration sensor 3 to calculate the hydrogen water concentration will be described with reference to Fig. 3 . In FIG. 3, the horizontal axis is a reference measurement value of a measurement value of another measurement device (a measurement value measured by introducing a hydrogen water to a batch type measurement device), and the vertical axis is obtained by the concentration sensor 3. The measured values are plotted and the results of the correlation between them are plotted.

Here, if it is supplemented, FIG. 3 does not plot the measurement result obtained by the concentration sensor 3 of FIG. 2 as it is, but uses the measured value which is finely adjusted. In addition, the measurement value (other than FIG. 2) in which the same fine adjustment has been performed is added.

In Fig. 3, the regression equation of the correlation of the measured value (y) obtained by the concentration sensor 3 with respect to the reference measured value (x) is expressed by the following equation, and becomes y = 1.3122 × - 23.127. The complex correlation coefficient R ² is R ² = 0.9896.

Therefore, in the present embodiment, the measurement value obtained by the concentration sensor 3 (after fine adjustment) is corrected based on the regression equation, and the corresponding reference measurement value is calculated as dissolved hydrogen in the hydrogen water. Concentration (corresponding to the concentration calculation project of the present embodiment).

Thereby, the concentration of hydrogen dissolved in the hydrogen water can be reliably calculated.

The above is the method for measuring the dissolved gas concentration by the dissolved gas concentration measuring apparatus according to the present embodiment, and the dissolved gas concentration measuring method can continuously and reliably measure the concentration of the dissolved gas dissolved in the liquid continuously and reliably. Instant monitoring of hydrogen water concentration.

In the above-described embodiment, the hydrogen water discharged from the nozzle 13 collides with the side surface of the first container 11 that faces the opposing direction, but the collision of the hydrogen water is not limited thereto. For example, a collision plate may be separately provided in the first container 11 to collide with the collision plate. Alternatively, the nozzles for discharging the hydrogen water may be opposed to each other, and the hydrogen water discharged by the two nozzles may collide with each other.

Next, a modified example of the dissolved gas concentration measuring apparatus of the present embodiment will be described with reference to Fig. 4 . The same components as those in FIG. 1 in FIG. 4 are denoted by the same reference numerals, and their description will be omitted.

The dissolved gas concentration measuring apparatus of FIG. 4 is formed as a single container, and includes a circulation path 10 for discharging the outside air to the liquid in the container 1, and a bank 19 for dividing the inside of the container 1 into two.

The circulation path 10 is a pipe through which the outside air introduced into the free space 18 of the container 1 through the intake hole 14 is circulated, and has an outer space The discharge pipe 10a for discharging the liquid into the container 1; the suction pipe 10b for taking in the outside air of the free space 18 in the container 1; and the bubbling pump 10c provided between the discharge pipe 10a and the intake pipe 10b.

The bank 19 is a partition plate which is vertically erected by the bottom surface of the container 1, and its upper end reaches the front portion of the ceiling portion of the container 1 (correctly, a position slightly higher than the middle of the bottom plate and the ceiling surface).

The method for measuring the dissolved gas concentration by the dissolved gas concentration measuring device configured as described above will be described.

In the dissolved gas concentration measuring apparatus of FIG. 4, first, the liquid water is supplied from the lower side of the container 1 by the liquid transfer pump 2 (corresponding to the kinetic energy imparting project of the present invention).

Then, the hydrogen water supplied into the container 1 is stored in a region (right region in the drawing) in which the bank 19 is partitioned, and soon passes over the bank 19 and falls in another region (the left region in the drawing) (corresponding to the present invention) Separation engineering).

At this time, by dropping the hydrogen water over the bank 19, the contact between the hydrogen water and the hydrogen dissolved therein and the outside air in the free space 18 can be increased, and the hydrogen separated by the hydrogen water can be increased.

At the same time, the outside air supplied to the bubbling pump 10c that has passed through the circulation path 10 is discharged in the hydrogen water in the region (the right side region in the drawing) partitioned by the bank 19 in the container 1 (corresponding to the present invention) Sports energy is given to engineering and separation engineering).

Thereby, in the hydrogen water, the outside air is discharged, thereby agitating the hydrogen water, and the contact between the hydrogen water and the hydrogen dissolved therein and the outside air is increased. Add, and can promote the separation of hydrogen from hydrogen water.

In the following, the hydrogen continuously separated and separated by the hydrogen water is mixed with the outside air that has flowed in from the intake hole 14 of the container 1 by the air pump 4, and is supplied to the filter 5 through the communication pipe 15 (corresponding to the present). In the hybrid process of the invention, the mixed gas of hydrogen and the outside air supplied to the filter 5 is removed by the filter 5, and the moisture is removed by the concentration sensor (hydrogen concentration sensor) 3. The hydrogen concentration of the mixed gas (corresponding to the measurement engineering of the present invention).

In this case, in the container 1, the free space 18 occupied by the hydrogen water is always a constant volume. Therefore, by driving the air pump 4 at a constant number of rotations, a certain amount of external air can be taken in. The dilution is performed to a certain volume, so that the hydrogen continuously separated in the container 1 is continuously diluted in a certain ratio, and the concentration sensor 3 can continuously measure the concentration.

As described in detail above, in the method for measuring the dissolved gas concentration by the dissolved gas concentration measuring apparatus shown in FIG. 4, the concentration of the dissolved gas dissolved in the liquid can be continuously and reliably measured. Perform real-time monitoring of the concentration of hydrogen water.

In particular, in the dissolved gas concentration measuring apparatus of Fig. 4, it is effective in the case where a solid component is contained in a liquid. For example, a solid component other than pure water and hydrogen is used as a main component of hydrogen water. When the nozzle 13 of Fig. 1 is provided, even when the component can be fixed, it can be easily and reliably continuous while preventing the fixation. The hydrogen concentration in the hydrogen water was measured.

However, in the dissolved gas concentration measuring device of FIG. 4, either the bank 19 or the circulation path 10 may be omitted.

Conversely, in the dissolved gas concentration measuring apparatus of Fig. 1, the circulation path 10 may be provided in the first container 11 to promote the separation of the dissolved gas.

Further, in order to promote the separation of the dissolved gas, in the dissolved gas concentration measuring apparatus of Fig. 1, the bank 19 may be provided in the first container 11, and the inside of the container 11 may be divided into two, and the liquid falling over the bank 19 may be permeated. The tube 16 is connected and supplied to the second container 12.

In this case, it is preferable that the height of the bank 19 is such that the liquid is dropped over the bank 19 and the free space 18a in the first container 11 is kept constant, above the drain port 17 and below the nozzle 13. .

In the present embodiment, the hydrogen water in which the liquid is water and the dissolved gas is hydrogen is described as an example. However, the liquid and the dissolved gas are not limited thereto. For example, in the monitoring of water quality, the concentration of oxygen or nitrogen dissolved in water can also be measured as the concentration of the dissolved gas. Further, the liquid may be a biological solution such as various solutions other than water or blood.

1‧‧‧ container

2‧‧‧Liquid pump (motor energy giving means)

3‧‧‧Concentration sensor (hydrogen concentration sensor)

4‧‧‧Air pump

5‧‧‧Filter

11‧‧‧1st container

12‧‧‧ second container

13‧‧‧Nozzles

14‧‧‧ suction holes

15‧‧‧Connected pipe

16‧‧‧Connected tube

17‧‧‧Drainage

18a, 18b‧‧‧ free interval

Claims (6)

A dissolved gas concentration measuring device for measuring a concentration of a dissolved gas dissolved in a liquid, comprising: a container for storing the liquid; and an exercise energy applying means for The liquid imparts kinetic energy; the concentration sensor measures the concentration of the separation gas that separates the dissolved gas from the liquid by the kinetic energy imparted by the kinetic energy imparting means; and the supply means is The concentration sensor supplies the separation gas, and the container has a free space occupied by the liquid other than the liquid, and has an intake hole through which external air can flow into the free space, and the supply means supplies the separation gas to the concentration. In the sensor, external air is caused to flow in from the intake holes, and a mixed gas in which the separation gas and the outside air are mixed is supplied to the concentration sensor. The apparatus for measuring a dissolved gas concentration according to the first aspect of the invention, wherein the kinetic energy imparting means imparts kinetic energy to the liquid and imparts kinetic energy to the molecules of the liquid and the molecules of the dissolved gas, thereby dissolving The gas is separated by the liquid, and the contact of the liquid and the dissolved gas with the aforementioned outside air is increased to increase the dissolved gas separated by the liquid. For example, the dissolved gas concentration measuring device of claim 2, The kinetic energy imparting means causes the liquid to collide and diffuse in the container by the kinetic energy imparted to the liquid, thereby increasing the contact between the liquid and the dissolved gas and the outside air. The dissolved gas separated by the liquid increases. The dissolved gas concentration measuring apparatus according to the second aspect of the invention, wherein the kinetic energy imparting means releases the external air in the liquid to agitate the liquid, thereby causing the liquid and the dissolved gas to be external air The increased contact increases the dissolved gas separated by the liquid. The dissolved gas concentration measuring apparatus according to the fourth aspect of the invention, wherein the kinetic energy imparting means passes the levee which is provided in the area defined by the liquid in the container by the kinetic energy imparted to the liquid. The liquid falls, whereby the contact of the liquid and the dissolved gas with the outside air is increased to increase the dissolved gas separated by the liquid. A method for measuring a dissolved gas concentration, which is a method for measuring a dissolved gas concentration for measuring a concentration of a dissolved gas dissolved in a liquid, comprising: a kinetic energy imparting project for imparting kinetic energy to the liquid; and a separation process; In the container for accommodating the liquid, the dissolved gas is separated from the liquid by the kinetic energy imparted by the kinetic energy imparting engineering, and the mixing process is performed by the separation process to dissolve the gas. a separation gas separated by the foregoing liquid, and a suction hole flow from the aforementioned container The external air to be mixed is mixed; the measurement is performed by measuring the concentration of the dissolved gas of the mixed gas in which the separation gas is mixed with the outside air by the mixing process; and the concentration calculation process is performed by The concentration of the dissolved gas in the mixed gas measured in the measurement process is used to calculate the concentration of the dissolved gas dissolved in the liquid.