KR102159454B1 - Cyclic type arbon dioxide detection sensor of carbon capture and storage - Google Patents

Abstract

The present invention relates to a circulation-type carbon dioxide detection sensor for an underground carbon dioxide storage facility. According to the present invention, the circulation-type carbon dioxide detection sensor for an underground carbon dioxide storage facility comprises: a control unit (100) for calculating the concentration of carbon dioxide; an LED plate (110) connected to the control unit (100); a first container (120) coupled to the lower side of the LED plate (110); a plurality of second containers (180); a dialysis membrane (140); an indicator (130); a detection unit (150) installed to be separated from the lower side of the first container (120); a circulation unit (170); and a fixing unit (160). According to the present invention, sensor operation costs can be reduced.

Description

Cyclic type arbon dioxide detection sensor of carbon capture and storage

The present invention relates to a circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility, and in more detail, carbon dioxide underground storage capable of detecting the concentration of carbon dioxide (CO ₂ ) leaking from a carbon dioxide underground storage facility (Carbon Capture and Storage, CCS) It relates to a facility's circulating carbon dioxide sensor.

Carbon dioxide underground storage technology is one of the most promising large-capacity greenhouse gas reduction technologies. By applying such carbon dioxide underground storage technology, large-scale demonstration and commercialization projects are already being carried out internationally in Norway, Algeria, Canada, and the United States, and small and medium-sized enterprises with various contents and scales in other countries such as Australia, Japan, the Netherlands, and Germany. A scale demonstration project is in progress. In addition, small-scale onshore pilot storage projects and medium-sized offshore storage demonstration projects have been promoted in Korea, and are steadily striving to develop technology and secure experience.

Such projects using underground carbon dioxide storage technology are expected to continue to expand until the use of fossil fuels is replaced by other energy sources, but the instability of the GHG reduction market, economics related to the profit structure of the business, and GHG leakage There is a problem that has threats such as stability against.

In particular, GHG leakage refers to the leakage of carbon dioxide, which was officially declared the main culprit of global warming by the World Ground Organization (WMO) and the United Nations Environment Program (UNEP) in 1985. Since such carbon dioxide leakage causes the occurrence of global warming due to the widespread movement of carbon dioxide, it is necessary to detect whether greenhouse gas (carbon dioxide) is leaked from the carbon dioxide underground storage facility to ensure stability against greenhouse gas leakage. It can be seen as the core of storage technology.

Furthermore, in order to secure stability against leakage of greenhouse gases, various carbon dioxide leakage detection technologies have been conventionally known, and an optical sensor capable of quickly and accurately detecting carbon dioxide is known.

As a prior art for detecting the leakage of carbon dioxide using such an optical sensor, a Korean Patent Registration (No. 10-1160045, title of the invention: infrared carbon dioxide detector and an inshoot probe carbon dioxide measuring device using the same) is known. The prior art may measure the concentration of carbon dioxide in the mixed gas using a carbon dioxide detector to which an infrared transmission absorbance method is applied.

As a prior art different from the prior art, a Korean patent (No. 10-0845425, title of the invention: an optical sensor probe and a detection method using the same) is known. The other prior art is a sensor film in which a fluorescent dye is immobilized on the surface, a light emitting diode emitting light of a certain wavelength, a port diode that detects the emitted light, an optical fiber through which light emitted by a light emitting diode or a fluorescent dye passes, and light emission. Using an in-situ (in-situ) optical sensor probe including an excitation filter that selectively transmits only excitation light that can be sensitized by a fluorescent dye among the light emitted from the diode, and a diverging filter that selectively transmits only the fluorescence emitted by the fluorescent dye. Dissolved oxygen, dissolved carbon dioxide, and pH can be detected by the -situ) method.

However, the conventional techniques described above have a problem in that it is difficult to mass-produce due to high manufacturing cost in manufacturing a sensor, so that a specific range of a small area is limited through a small number of sensors to detect the concentration of carbon dioxide. In addition, since the concentration of carbon dioxide is detected from a small area, there is a problem that it is not suitable for detecting the concentration of carbon dioxide from a carbon dioxide underground storage facility having a large area.

Accordingly, there is a need to develop a sensor capable of detecting the concentration of carbon dioxide leaking from a carbon dioxide underground storage facility having a large area by using a sensor capable of mass production at a low manufacturing cost, unlike the prior art.

Korean Patent Registration No. 10-1160045, Korean Patent Registration No. 10-0845425.

The present invention has been proposed to solve the above problems, based on a color change of an indicator that is mounted in a plurality of carbon dioxide underground storage facilities and changes color when a pH change occurs due to gas leaking from the carbon dioxide underground storage facility. Accordingly, an object of the present invention is to provide a circulating carbon dioxide sensor capable of detecting the concentration of carbon dioxide.

In addition, the present invention circulates the color-changed indicator to replace it with another indicator, and the color-changed indicator is restored to its original color by a gas in a statically parallel state at a constant temperature lapse rate, thereby reusing the indicator that has changed color. It is an object of the present invention to provide a circular carbon dioxide sensor.

On the other hand, the technical problem to be achieved in the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

A circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention for achieving the above object includes: a control unit 100 for calculating a concentration of carbon dioxide using sensing data of the sensing means; An LED plate 110 connected to the control unit 100 and provided with an LED light source to emit light; The first container 120 is coupled to the lower side of the LED plate 110, the lower side is opened; A second container 180, which is provided in plural, is coupled to the outer side wall of the first container 120, and has an upper side open; A dialysis membrane 140 having particles that are coupled to the lower side of the first container 120 and the upper side of the second container 180, respectively, and the indicator 130 does not pass, and only the gas 2 passes; The indicator 130, which is put into the first container 120 or the second container 180, and changes color when a pH change occurs by the gas 2 passing through the dialysis membrane 140; It is installed to be spaced apart from the lower side of the first container 120, detects a color change of the indicator 130 that is put into the first container 120 or the second container 180, generates sensing data, and controls the sensing data A detector 150 for transmitting to the 100; A circulation unit 170 for circulating the indicator 130 from the first container 120 to the second container 180 or from the second container 180 to the first container 120; And a fixing unit 160 installed on the outer wall of the second container 180 and coupled to one side of the sensing unit 150 to fix the position of the sensing unit 150.

In addition, the circulating carbon dioxide detection sensor of the carbon dioxide underground storage facility according to an embodiment of the present invention is an air pump that supplies gas 2 which is a gas in a statically parallel state to a constant temperature lapse rate into the second container 180 ( 190); further includes.

In addition, when the controller 100 determines that the color of the indicator 130 accommodated in the first container 120 is changed by the gas 2 flowing into the first container 120 through the sensing data , By controlling the circulation unit 170, the indicator 130 whose color is changed from the first container 120 is introduced into the second container 180 of the plurality of second containers 180.

Here, the gas 2 flowing into the first container 120 is at least one of sulfurous acid gas and ammonia that changes the pH of the indicator 130 while being dissolved in the indicator 130.

In addition, the controller 100 allows the color of the indicator 130 whose color is changed to be input into the one second container 180 through the sensing data to be first applied by the gas 2 flowing into the second container 180. When it is determined that the color has been restored to the color of the container 120, the indicator 130 whose color is restored from the second container 180 to the first container 120 by controlling the circulation unit 170 Let this be put in.

In addition, the control unit 100, the indicator 130, the color is restored, is injected from one second container 180 to the first container 120, the indicator received in the first container 120 through the sensing data ( When it is determined that the color change of 130) has occurred, the color of the second container 180 adjacent to one second container 180 from the first container 120 is controlled by controlling the circulation unit 170. The changed indicator 130 is to be introduced.

And the control unit 100, the color change indicator 130, the color of the indicator 130 accommodated in the first container 120 through the detection data is input to each of the plurality of second container 180 at least once When it is determined that is generated, the indicator 130 whose color is changed from the first container 120 to the plurality of second containers 180 in the order of input of the indicator 130 whose color has changed by controlling the circulation unit 170 ) Is put in.

In addition, the indicator 130 includes any one or more of cresol red, anthocyanin, phenolphthalein, o-cresolphthalein, methyl red, or Nile blue.

And the indicator 130, the antifreeze ethanol or glycerol is additionally added.

In addition, the sensing unit 150 generates RGB data by detecting a color change of the indicator 130 through which light of the LED plate 110 is transmitted, and an RGB sensor 151 that transmits the RGB data to the controller 100 Includes;

And the sensing unit 150, a camera 153 for generating photographing data by photographing the indicator 130 through which the light of the LED plate 110 is transmitted a plurality of times, and transmitting the photographing data to the controller 100; includes do.

According to an embodiment of the present invention, the sensor operation cost can be reduced by restoring the indicator whose color has changed to its original color and then reusing it.

In addition, since the sensing unit accurately and consistently senses the color change of the indicator using the LED light source, the control unit can accurately and quickly calculate the concentration of carbon dioxide leaking from the carbon dioxide underground storage area.

And according to an embodiment of the present invention, by providing a plurality of sensors, it is possible to detect the concentration of carbon dioxide leaking from the carbon dioxide underground storage area of a large area.

In addition, according to an embodiment of the present invention, it is possible to accurately and quickly detect the concentration of carbon dioxide leaking from the industrial site by being applied to not only an underground carbon dioxide storage area, but also to other industrial sites.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

1 is a perspective view of a circulation type carbon dioxide sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.
2 is a cross-sectional view of a circulating carbon dioxide sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.
3 is a plan view of a circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention in which the control unit and the LED plate shown in FIGS. 1 and 2 are removed.
4 is a block diagram showing a configuration controlled by a controller.
5 is a schematic diagram showing an installation example of a circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.
6 to 7 are flowcharts illustrating an example of use of a circulating carbon dioxide sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only those effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between the constituent elements, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to specified features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists, and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in a commonly used dictionary should be interpreted as having the meaning of the related technology in context, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Circulating carbon dioxide detection sensor

<Configuration>

Hereinafter, with reference to the accompanying drawings, the configuration of the circulating carbon dioxide detection sensor 10 (hereinafter referred to as'circulating carbon dioxide detection sensor 10') of the carbon dioxide underground storage facility according to an embodiment of the present invention. I will explain in detail.

1 is a perspective view of a circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention. 3 is a plan view of a circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention in which the control unit and the LED plate shown in FIGS. 1 and 2 are removed, and FIG. 4 is a block diagram showing a configuration controlled by the control unit to be.

As shown in these drawings, the circulation type carbon dioxide detection sensor 10 includes a control unit 100, an LED plate 110, a first container 120, an indicator 130, a dialysis membrane 140, and a detection unit 150. , A fixing part 160, a circulation part 170, a second container 180, and an air pump 190 are provided.

As such, the circulating carbon dioxide detection sensor 10 detects the concentration of carbon dioxide leaking from the carbon dioxide underground storage 1 through the above configurations through the indicator 130, and the indicator used to detect the concentration of carbon dioxide ( 130) is recycled and reused.

The controller 100 calculates the concentration of carbon dioxide based on the sensing data received from the sensing unit 150 as a sensing means.

Specifically, the control unit 100 receives RGB data of the RGB sensor 151 to be described later provided in the sensing unit 150 or photographing data of the camera 153, and the concentration of carbon dioxide based on the RGB data or photographing data Yields

And the control unit 100 controls the operation of the LED plate 110, the RGB sensor 151, the camera 153, the circulation pump 171 and the air pump 190.

In addition, although not shown in the drawing, the control unit 100 controls a power supply unit (not shown) provided with a battery for supplying power to an LED light source (not shown) provided in the LED plate 110 to control the LED plate 110 Let the light emit from.

The LED plate 110 is connected to the controller 100, and a plurality of LED light sources (not shown) emitting light are provided at the lower side. In addition, the light emitted downward from the LED light source (not shown) is transmitted to the indicator 130 injected into the first container 120 and the indicator 130 injected into the second container 180, respectively.

In this way, the LED plate 110 transmits light to the indicator 130 that is injected into the first and second containers 120, 180, and the sensing unit 150 transmits light from the LED light source (not shown). This is for the control unit 100 to accurately and quickly calculate the concentration of carbon dioxide through the indicator 130 by accurately and consistently detecting the color change of the indicator 130.

Here, it will be desirable for the controller 100 to maintain the light intensity of the LED light source (not shown) while the sensing unit 150 detects a color change. This prevents the detection unit 150 from being unable to accurately detect the color change of the indicator 130 inputted to the first and second containers 120 and 180 respectively according to the change in the light intensity of the LED light source (not shown). It is for sake.

The first container 120 is coupled to the lower side of the LED plate 110, the lower side is opened, and the lower side is a first dialysis membrane 141 to be described later of the dialysis membrane 140 is combined. Here, the lower side of the first container 120 is opened to allow the gas 2 passing through the first dialysis membrane 141 to flow into the first container 120.

And the first container 120 is not shown in the drawing, but is provided with an upper surface coupled to the lower side of the LED plate 110 so that the indicator 130 is not attached or stained on the lower side of the LED plate 110, the LED plate 110 ) Is made of an acrylic material, which is a transparent material, so that the light emitted from the first container 120 is transmitted through the indicator 130 and the second container 180. However, the first container 120 is not limited to being made of an acrylic material, and may be made of another transparent material through which light is transmitted.

The indicator 130 is injected into the first container 120 and the second container 180, respectively, and the first container is formed by a dialysis membrane 140 that is coupled to the first container 120 and the second container 180, respectively. 120) and the second container 180 are not separated from the inside, and the pH change occurs by the gas 2 that passes through the dialysis membrane 140 and is introduced into the first container 120 and the second container 180, respectively. When the color changes.

These indicators 130 include any one or more of cresol red, anthocyanin, phenolphthalein, o-cresolphthalein, methyl red, or Nile blue, and the color changes to a red color when a pH change occurs by the gas (2). . However, the indicator 130 is not limited to the above substances, and includes any one or more of thymol blue, thymol blue sodium blue, or thymolphthalein, and when the pH changes due to the gas 2, the color is blue. This can be changed.

In addition, as the indicator 130, ethanol or glycerol as an antifreeze may be additionally added. This is to prevent the indicator 130 from being cooled by an external influence (eg, freezing) to reduce light transmittance or to refract light.

On the other hand, the gas 2 introduced into the first container 120 is dissolved in the indicator 130, which is a liquid, so that the pH of the indicator 130 changes, and the sulfuric acid gas (SO) changes the pH of the indicator 130. ₂ ) and ammonia (NH ₃ ) may be at least one. However, the gas 2 introduced into the first container 120 is not limited to one of sulfurous acid gas and ammonia, and may be another gas that changes the pH of the indicator 130 while being dissolved by the indicator 130.

In contrast, the gas (2) introduced into the second container (180) is the indicator 130 whose color is changed by the gas (2) passing through the dialysis membrane 140 coupled to the first container (120). It may be a gas for restoring to an initial color before the gas 2 passes through 120. If the gas 2 introduced into the second container 180 is a gas that restores the initial color of the indicator 130, the type is not limited.

The dialysis membrane 140 is divided into a first dialysis membrane 141 coupled to the lower side of the first container 120 and a second dialysis membrane 143 coupled to the upper side of the second container 180, and the indicator 130 passes It is made of regenerated cellulose having particles through which only the gas 2 is passed. However, the dialysis membranes 141 and 143 are not limited to being made of regenerated cellulose, and the indicator 130 may not pass, but may be made of another material having particles through which the gas 2 passes.

The detection unit 150 is installed to be spaced apart from the lower side of the first dialysis membrane 141 coupled to the lower side of the first container 120 through the fixing unit 160, and the first container 120 or the second container 180 ) To detect the color change of the indicator 130, which is injected into), generates sensing data, and transmits the generated sensing data to the controller 100.

The sensing unit 150 is provided with one of the RGB sensor 151 and the camera 153, and the color of the indicator 130 injected into the first container 120 or the second container 180 through the provided configuration. Detect change. However, the sensing unit 150 is provided with not one RGB sensor 151 and one camera 153, but at the same time, and may detect a color change of the indicator 130 through at least one configuration.

The RGB sensor 151 generates RGB data by detecting a color change of the indicator 130 injected into the first container 120 or the second container 180 through which the light of the LED plate 110 is transmitted, RGB data is transmitted to the control unit 100. Here, RGB means a method of displaying colors using the three primary colors of light, red, green, and blue. That is, the RGB data refers to data representing the color of the indicator 130 that is put into the first container 120 or the second container 180 as an RGB value.

The camera 153 creates photographing data by photographing the indicator 130 that is injected into the first container 120 or the second container 180 through which the light of the LED plate 110 is transmitted, and generates a plurality of The photographing data is transmitted to the control unit 100.

Meanwhile, when the RGB sensor 151 is provided in the sensing unit 150, the control unit 100 calculates the concentration of carbon dioxide detected during the sensing time based on the RGB data received from the RGB sensor 151.

On the contrary, when the camera 153 is provided in the sensing unit 150, the controller 100 stores a plurality of photographing data received from the camera 153 in the order of photographing time, and RGB from the plurality of photographing data stored in the order of photographing time. A value is calculated, and the concentration of carbon dioxide captured during the sensing time is calculated based on the calculated RGB value.

The fixing unit 160 is installed on the outer wall of the second container 180, and is coupled to one side of the RGB sensor 151 or the camera 153, and the first dialysis membrane 141 is coupled to the lower side of the first container 120. The RGB sensor 151 or the camera 153 is fixed to be spaced apart from the lower side of ).

The circulation unit 170 is a circulation pump 171 to circulate the indicator 130 from the first container 120 to the second container 180 or from the second container 180 to the first container 120. ) And a pipe 173 are provided.

The circulation pump 171 circulates the indicator 130 in the first container 120 flowing into the pipe 173 to the second container 180 or in the second container 180 flowing into the pipe 173 The indicator 130 is circulated to the first container 120.

The pipe 173 is divided into a pipe penetrating the outer wall of the first container 120 and a pipe positioned in the second container 180, and provides a path through which the indicator 130 is circulated.

The second container 180 is provided in plural and coupled to the outer side walls of the first container 120, respectively, the upper side is open, and the second dialysis membrane 143 is coupled to the upper side. Here, the upper side of the second container 180 is opened to allow the gas 2 passing through the second dialysis membrane 143 to flow into the second container 180.

And the second container 180 is made of an acrylic material, which is a transparent material, so that light emitted from the LED plate 110 is transmitted through the indicator 130. However, the second container 180 is not limited to being made of an acrylic material, and may be made of another transparent material through which light is transmitted.

Although not shown in the drawing, the air pump 190 is coupled to the upper side of the second container 180 through a pipe (not shown) through which the gas 2 flows, and is a gas in a statically parallel state with a constant temperature lapse rate. The gas 2 is supplied into the second container 180. In this way, the air pump 190 supplies the gas 2 into the second container 180 in order to restore the color-changed indicator 130 input from the first container 120 to the initial color.

<Installation example>

Hereinafter, an installation example of the circulation type carbon dioxide detection sensor 10 will be described in detail with reference to the accompanying drawings.

5 is a schematic diagram showing an installation example of a circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.

As shown in Figure 5, the circulation type carbon dioxide detection sensor 10 is mounted on one side (preferably, the upper side) of the carbon dioxide underground storage 1 through the control unit 100, the carbon dioxide underground storage 1 The concentration of carbon dioxide leaking from is detected.

Furthermore, the circulation type carbon dioxide detection sensor 10 may be mounted in a plurality of carbon dioxide underground storage tanks 1, thereby detecting the concentration of carbon dioxide leaking from the carbon dioxide underground storage tank 1 of a large area.

In addition, the circulation type carbon dioxide detection sensor 10 may detect carbon dioxide leaking from the carbon dioxide underground storage area 1 by detecting carbon dioxide leaked by soil respiration.

As such, the circulating carbon dioxide detection sensor 10 may be applied not only to the carbon dioxide underground storage area 1 but also to other industrial sites to detect the concentration of carbon dioxide leaking from the industrial site.

In addition, the circulating carbon dioxide sensor 10 transmits the calculated concentration of carbon dioxide to the communication unit 3 by the control unit 100 being connected to the communication unit 3 by wire or wirelessly.

Here, the communication unit 3 is not simply a communication unit for information transmission, it is preferable to be understood as a configuration that transmits and receives information, and also serves as a storage unit capable of storing and outputting the transmitted and received information, and an output unit. May check the concentration of carbon dioxide calculated by the control unit 100 through the communication unit 3.

In addition, although not shown in the drawing, the circulating carbon dioxide sensor 10 may be connected to a terminal (eg, a mobile phone, a workstation, a tablet, a server computer, etc.). Through this terminal, the user can check the concentration of carbon dioxide calculated by the control unit 100.

<Example of use>

Hereinafter, an example of use of the circulating carbon dioxide sensor 10 will be described in detail with reference to the accompanying drawings.

6 to 7 are flowcharts illustrating an example of use of a circulating carbon dioxide sensor of a carbon dioxide underground storage facility according to an embodiment of the present invention.

Meanwhile, hereinafter, the indicator 130 injected into the first container 120 described above is used as the indicator 130a, the indicator 130 injected in the second container 180 is used as the indicator 130b, and the first container 120 Gas (2) for restoring the gas (2), which is a gas leaking from the carbon dioxide underground reservoir (1) flowing into the gas (2a), and the indicator (130) flowing into the second container (180), to its initial color Will be described as the gas (2b).

First, as shown in (a) of Figure 6, gas (2a) is introduced through the first dialysis membrane 141 coupled to the lower side of the first container 120 into which the indicator (130a) is injected, and the indicator ( 130a) changes color as the pH changes through the gas 2a.

When the color of the indicator 130a changes in the first container 120 by the gas 2a, the detection unit 150 detects the indicator 130a of which the color is changed to generate sensing data, and the controller 100 Calculates the concentration of carbon dioxide based on the detection data of the indicator (130a).

When the concentration of carbon dioxide is calculated based on the sensing data of the indicator 130a, the control unit 100 controls the operation of the circulation pump 171 as shown in (b) and (c) of FIG. The indicator 130a of which the color of the container 120 is changed is introduced into the second container 180 to which the indicators 130a and 130b are not added.

When the indicator (130a) is put into the second container 180, as shown in Figure 6 (c) and (d), the control unit 100 controls the operation of the circulation pump 171 to the second container ( The indicator (130b) of 180) is to be put into the first container (120).

When the indicator 130b is put into the first container 120, as shown in (d) of FIG. 6, the controller 100 controls the operation of the air pump 190 so that the indicator 130a whose color is changed is The gas 2b is supplied into the injected second container 180. Here, the color-changed indicator (130a) is restored to the initial color as the pH change occurs through the gas (2b).

When the color changes in the first container 120 by the gas 2a after the indicator 130b is introduced into the first container 120, the detection unit 150 detects and detects the color changed indicator 130b. Data is generated, and the control unit 100 calculates the concentration of carbon dioxide based on the sensing data of the indicator 130b.

When the concentration of carbon dioxide is calculated based on the sensing data of the indicator 130b, the control unit 100 controls the operation of the circulation pump 171 as shown in (a) and (b) of FIG. The indicator 130b of which the color of the container 120 is changed is introduced into the second container 180 to which the indicators 130a and 130b are not added.

When the indicator 130a is restored to the initial color and the indicator 130b is input from the first container 120 to the second container 180, as shown in FIG. 7C, the controller 100 The operation of the circulation pump 171 is controlled so that the indicator 130a from which the color of the second container 180 is restored is introduced into the first container 120. In this case, the color of the indicator 130a whose color has been restored may be changed again by the gas 2a flowing into the first container 120.

When the indicator 130a is injected into the first container 120, the control unit 100 controls the operation of the air pump 190, and the second container 180 into which the indicator 130b whose color is changed by the gas 2a is injected. ) To supply the gas (2b). Here, the indicator 130b is restored to its initial color while a pH change occurs through the gas 2b.

On the other hand, the control unit 100 determines that the color-restored indicators 130a and 130b are input from one second container 180 to the first container 120, and a color change has occurred by the gas 2a. In this case, the circulating unit 170 is controlled so that the indicators 130a and 130b whose colors are changed are injected into the second container 180 adjacent to the second container 180.

In addition, the control unit 100 is the indicator (130a, 130b) of which the color is changed is injected at least once into each of the plurality of second containers 180, and the indicators (130a, 130b) injected into the first container 120 are gas When it is determined that the color change has occurred by (2a), by controlling the circulation unit 170, in the order of inputting the color-changed indicators 130a, 130b, from the first container 120 to the plurality of second containers ( The indicators 130a and 130b of which the color has changed are put into 180).

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and implement the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use the configurations described in the above-described embodiments in a manner that combines with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, the embodiments may be configured by combining claims that do not have an explicit citation relationship in the claims, or may be included as new claims by amendment after filing.

1: carbon dioxide underground reservoir,
2: gas,
3: Ministry of Communications,
10: circulation type carbon dioxide detection sensor,
100: control unit,
110: LED plate,
120: first container,
130: indicator,
140: dialysis membrane,
141: first dialysis membrane,
143: second dialysis membrane,
150: sensing unit,
151: RGB sensor,
153: camera,
160: fixing part,
170: circulation part,
171: circulation pump,
173: pipe,
180: second container,
190: air pump.

Claims (11)

A control unit 100 for calculating the concentration of carbon dioxide from the sensing data of the sensing means;
An LED plate 110 connected to the control unit 100 and provided with an LED light source to emit light;
A first container 120 coupled to the lower side of the LED plate 110 and opening the lower side;
A second container 180, which is provided in plurality, is coupled to the outer side wall of the first container 120, and has an upper side open;
A dialysis membrane 140 having particles which are coupled to the lower side of the first container 120 and the upper side of the second container 180, respectively, and the indicator 130 does not pass and only the gas 2 passes;
The indicator 130, which is put into the first container 120 or the second container 180, and changes color when a pH change occurs by the gas 2 passing through the dialysis membrane 140;
It is installed to be spaced apart from the lower side of the first container 120, detects a color change of the indicator 130 input to the first container 120 or the second container 180 to generate the detection data, A detection unit 150 for transmitting the detection data to the control unit 100;
A circulation unit 170 for circulating the indicator 130 from the first container 120 to the second container 180 or from the second container 180 to the first container 120; And
A fixing unit 160 installed on the outer wall of the second container 180 and coupled to one side of the sensing unit 150 to fix the position of the sensing unit 150; carbon dioxide underground, comprising: Circulating carbon dioxide detection sensor in storage facilities. The method of claim 1,
An air pump 190 for supplying a gas 2 which is a gas in a statically parallel state to a constant temperature lapse rate into the second container 180; circulating carbon dioxide detection of a carbon dioxide underground storage facility, characterized in that it further comprises sensor. The method of claim 1,
The control unit 100,
When it is determined that the color of the indicator 130 accommodated in the first container 120 is changed by the gas 2 flowing into the first container 120 through the sensing data, the circulation unit ( The carbon dioxide underground, characterized in that the indicator 130 whose color is changed from the first container 120 is injected into the second container 180 of the plurality of second containers 180 by controlling 170). Circulating carbon dioxide detection sensor in storage facilities. The method of claim 3,
The gas 2 flowing into the first container 120,
Cyclic carbon dioxide detection sensor of a carbon dioxide underground storage facility, characterized in that at least one of sulfurous acid gas and ammonia that dissolves in the indicator 130 and changes the pH of the indicator 130. The method of claim 3,
The control unit 100,
The color of the indicator 130 whose color is changed, which is introduced into the one second container 180 through the sensing data, is applied to the first container 120 by the gas 2 flowing into the second container 180. ), when it is determined that the color has been restored to the color of the first container 120 by controlling the circulation unit 170, the indicator 130 having the color restored from the one second container 180 to the first container 120 ) Circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility, characterized in that the input. The method of claim 5,
The control unit 100,
The indicator 130 whose color has been restored is introduced into the first container 120 from the one second container 180, and the indicator 130 accommodated in the first container 120 through the sensing data When it is determined that the color change has occurred, the color of the color change from the first container 120 to the other second container 180 adjacent to the one second container 180 by controlling the circulation unit 170. Circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility, characterized in that the changed indicator 130 is introduced. The method of claim 3,
The control unit 100,
The color-changed indicator 130 is introduced into the plurality of second containers 180 at least once, and the color change of the indicator 130 accommodated in the first container 120 occurs through the sensing data. If it is determined that the color is changed from the first container 120 to the plurality of second containers 180 in the order of inputting the indicator 130 having the changed color by controlling the circulation unit 170 Circulation type carbon dioxide detection sensor of a carbon dioxide underground storage facility, characterized in that (130) is input. The method of claim 1,
The indicator 130,
Cresol red, anthocyanin, phenolphthalein, o-cresol phthalein, methyl red, or Nile blue circulating carbon dioxide detection sensor of a carbon dioxide underground storage facility comprising any one or more. The method of claim 8,
The indicator 130,
A carbon dioxide detection sensor of a carbon dioxide underground storage facility, characterized in that ethanol or glycerol, which is an antifreeze, is additionally added. The method of claim 1,
The sensing unit 150,
Including; an RGB sensor 151 for generating RGB data by detecting a color change of the indicator 130 through which the light of the LED plate 110 is transmitted, and transmitting the RGB data to the controller 100; Carbon dioxide detection sensor of a carbon dioxide underground storage facility characterized by. The method of claim 1,
The sensing unit 150,
And a camera 153 for generating photographing data by photographing the indicator 130 through which light of the LED plate 110 is transmitted a plurality of times, and transmitting the photographing data to the controller 100; Carbon dioxide detection sensor of a carbon dioxide underground storage facility.

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