JP6288783B2 - Gas extraction / separation unit for gas-liquid mixed fluid observation equipment in the ground - Google Patents

Description

  The present invention relates to a gas extraction / separation unit suitable for use in an underground gas-liquid mixed fluid observation device that enables continuous monitoring of groundwater and underground gas conditions.

  Conventionally, research on crustal deformation, especially earthquake prediction, has been actively conducted in various fields, but the difficulty of earthquake prediction has not yet been overcome.

  By the way, as one of these research results, the observed values of various gases and ions (hydrogen gas, helium gas, carbon monoxide, carbon dioxide, hydrogen ion, hydrogen carbonate ion, etc.) collected from the observation well are shallow in the epicenter When responding to earthquakes, it has been found that their generation is related to the increase in fracture surface area associated with seismic failure and the porosity associated with failure. In recent years, changes in the chemical composition and gas composition of hot spring water and the like have also been revealed to be related to earthquakes.

  Based on the results of this research, the applicant of the present application is a device that enables continuous monitoring of groundwater and gas for earthquake prediction and the like. An observation device for liquid-mixed fluid is proposed.

FIG. 2 is a schematic diagram showing an example of the overall configuration of the underground gas-liquid mixed fluid observation apparatus described in Patent Document 1. As shown in FIG.
The underground gas-liquid mixed fluid observation apparatus disclosed in Patent Document 1 is a gas separation unit that separates pumped water and gas from pumping means (sampling pipe P1 and tubing pump CP) that pumps up a mixed fluid of water and gas. Liquid separation means, water quantity and water quality measurement means (flow meter FM and water quality measuring machine WM) for measuring the amount and quality of water separated by gas-liquid separation means, and analytical measurement of gas separated by gas-liquid separation means Means (mass spectrometer QMS), water quantity and water quality measuring means, and recording means (recording devices RC1, RC2, RC3) for recording measurement data by the analytical measuring means.
The gas-liquid separation means is connected to the discharge side of the pumping means and is made of a separation cylinder body B made of an infrared transmitting material, and is connected to the separation cylinder body B for transporting the separated water to the water quantity and water quality measurement means. Separated at a predetermined position by a water transport pipe P2, a gas transport pipe P3 connected to the separation cylinder body B for transporting the separated gas to the analytical measurement means, and an electromagnetic valve EV provided in the gas transport pipe P3. Gas water separation cylinder having an infrared light emitting device E for emitting infrared light so as to cross the tube main body B, and an infrared light receiving device R for receiving infrared light emitted from the infrared light emitting device E When the water level in the separation cylinder body B rises above a predetermined position and the infrared light is shut off, the solenoid valve EV is closed, and the water level falls below the predetermined position to release the infrared light shut-off. The solenoid valve is configured to open when the operation is performed. In FIG. 2, H is a slit tube driven into the borehole, PDM is a differential pressure gauge, CT is a cold trap, and PM is a differential pressure gauge.

Then, in the underground gas-liquid mixed fluid observation device described in Patent Document 1, the mixed fluid of water and gas in the slit tube H pumped up by the tubing pump CP through the sampling tube P1 by the start of operation of the device is The water level rises while separating into gas and water inside the gas water separation cylinder CY. When the water level inside the gas water separation cylinder CY reaches a predetermined water level, the infrared light reaching the infrared light receiving device R from the infrared light emitting device E is blocked, and the electromagnetic valve EV is closed. Then, water accumulates in the gas transport pipe P3 from the water transport pipe P2 through the flow meter FM to the water quality measuring machine WM, and the gas reaches the upper part of the gas water separation cylinder CY and the electromagnetic valve EV. When the gas pressure in the upper part of the gas water separation cylinder CY rises and the differential pressure is measured by the differential pressure gauge PDM and reaches a predetermined pressure set in advance, a signal is output from the differential pressure gauge PDM and based on the output signal The solenoid valve EV opens. The gas stored in the upper part of the gas water separation cylinder CY is sent to the mass spectrometer QMS through the cold trap CT through the gas transport pipe P3, the composition is analyzed by a well-known method, and the result is recorded in the recording device RC3. Is done. Further, the amount of water measured by the flow meter FM is recorded in the recording device RC1, and the value measured by the water quality measuring machine WM is recorded in the recording device RC2 by a known method.
Further, when the electromagnetic valve EV is opened, the gas pressure in the upper part of the gas water separation cylinder CY gradually decreases, and the water level inside the gas water separation cylinder CY gradually increases. When the water level inside the gas water separation cylinder CY reaches a predetermined water level, the infrared light reaching the infrared light receiving device R from the infrared light emitting device E is blocked, and the electromagnetic valve EV is closed.
In this way, one cycle of operation is completed, the above operation is started again, and this cycle is repeated.

  For this reason, according to the apparatus described in Patent Document 1, it is possible to monitor the underground gas components and groundwater quality over a long period of time. From the obtained record data, crustal deformation such as earthquakes can be performed while referring to the research results. It is possible to predict and accurately grasp changes in hot springs.

JP 2007-183160 A

  However, as a result of further research, the applicant of the present invention pumped up the mixed fluid by the pumping means in the apparatus described in Patent Document 1, and separated the pumped mixed fluid into water and gas by the gas-liquid separation means. It was found that there is room to improve the measurement accuracy of the extracted amount of underground gas. Moreover, in the apparatus described in Patent Document 1, there is room for continuously measuring groundwater when pumping the mixed fluid by the pumping means and separating the pumped mixed fluid into water and gas by the gas-liquid separation means. I found out that Furthermore, in the apparatus of patent document 1, it turned out that there exists room which can make the structure of a pumping means and a gas-liquid separation means more compact.

  The present invention has been proposed in order to solve the above-mentioned conventional problems, and it is possible to quantitatively quantitate the pumped-up groundwater and underground gas continuously and with high accuracy, and it is possible to downsize the gas-liquid mixed fluid in the ground. The object is to provide a gas extraction / separation unit for observation equipment.

  In order to achieve the above object, the gas extraction / separation unit for an underground gas-liquid mixed fluid observation device according to the present invention pumps up a mixed fluid of water and gas, and the pumped-up mixed fluid is in a gas-liquid equilibrium state at a predetermined atmospheric pressure. Gas separation to measure the amount and quality of the separated water and analyze the separated gas, and record the measurement data in the underground gas-liquid mixed fluid observation device A gas-liquid separation container which is a separation unit, the inside of which maintains airtightness and is decompressed, and separates the mixed fluid introduced into the inside into water and gas, and the gas-liquid separation container A mixed fluid introduction valve mechanism that introduces the mixed fluid into the gas-liquid separation container while maintaining internal airtightness, and a water level that continuously measures the water level of the water introduced into the gas-liquid separation container Sensor and said gas-liquid component A pressure sensor that measures the pressure of the gas introduced into the container; a water discharge pump valve mechanism that discharges the water from the gas-liquid separation container while maintaining airtightness inside the gas-liquid separation container; A gas extraction valve mechanism for extracting the gas from the gas-liquid separation container while maintaining the gas tightness inside the gas-liquid separation container, the mixed fluid introduction valve mechanism, the water discharge pump valve mechanism, and the gas extraction valve A pump valve control means for controlling the operation of the mechanism, and a quantitative means for calculating the amount of water pumped from the underground and the amount of extracted gas based on the water level measured by the water level sensor and the atmospheric pressure measured by the atmospheric pressure sensor. It is a feature.

  In the gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus according to the present invention, it is preferable that the water level sensor and the atmospheric pressure sensor are provided integrally with the gas-liquid separation container.

  In the gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus according to the present invention, the ultrasonic wave further promotes separation of water and gas in the mixed fluid introduced into the gas-liquid separation container. A generator is preferably provided.

  According to the present invention, it is possible to obtain a gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus that can quantitate the pumped groundwater and underground gas continuously and with high accuracy and that can simplify the structure.

It is a block diagram which shows the whole structure of the gas extraction / separation unit for underground gas-liquid mixed fluid observation apparatuses concerning one Embodiment of this invention. It is the schematic which shows an example of the whole structure of the underground gas-liquid mixed fluid observation apparatus described in patent document 1. FIG.

Prior to the description of the embodiments, the background of the present invention and the effects of the present invention will be described.
The present applicant manufactured the underground gas-liquid mixed fluid observation device described in Patent Document 1 and repeated the on-site test operation. As a result, it has been found that there is the following problem to be improved regarding the configuration in which the mixed fluid is pumped by the pumping means and the pumped mixed fluid is separated into water and gas by the gas-liquid separation means.

In the apparatus described in Patent Document 1, the mixed fluid is pumped up from the underground using a tubing pump CP as a pumping means and introduced into the gas water separation cylinder CY in a positive pressure state.
In such a configuration, air is contained when the underground mixed fluid is pumped up by the tubing pump CP. For this reason, in the gas water separation cylinder CY, the gas separated from the water is mixed with the air mixed when pumped by the tubing pump CP in addition to the gas contained in the ground. As a result, even if the gas separated in the gas / water separation cylinder CY in the gas-liquid separation means is measured, the air becomes noise, so the absolute amount of underground gas cannot be measured with high accuracy.
However, in order to be able to measure the absolute amount of underground gas with high accuracy by measuring the gas when the mixed fluid is separated, it is desirable not to mix air into the mixed fluid pumped from the ground. .

Further, in the apparatus described in Patent Document 1, the electromagnetic valve EV is closed when the water level rises above a predetermined position and the infrared light is blocked inside the gas water separation cylinder CY, and the water level falls below the predetermined position. The electromagnetic valve EV is opened when the blocking of the infrared light is released. Then, between the time when the solenoid valve EV is closed and the time when the valve is opened, the gas pressure accumulated in the gas water separation cylinder CY causes the water inside the gas water separation cylinder CY to flow through the water transport pipe P1 and the flow meter FM. The water quality measuring machine WM is sent to the flow meter FM and the amount of water passing through the flow meter FM is measured.
However, in the configuration in which the timing of flowing the water in the gas water separation CY to the water transport pipe P1 is switched by opening and closing the electromagnetic valve EV using such infrared light, a predetermined level is selected from a position where the water level is low in the gas water separation CY. The amount of water until the water level rises to the position cannot be quantified continuously.

  Moreover, in the apparatus described in Patent Document 1, measuring devices such as a differential pressure gauge PDM and a flow meter FM are connected to the separation cylinder main body B via a water transport pipe P2 and a gas transport pipe P3. In this case, the arrangement of measuring devices is dispersed, and the pumping means and the gas-liquid separation means are easy to increase in size as a whole. For this reason, in the apparatus described in Patent Document 1, once installed in a predetermined place, it is difficult to change the place. However, there are many places where observation of gas-liquid mixed fluid in the ground is required. In order to enable observation with the installation location changed as needed, it is desirable to make the portable unit as compact as possible.

As a result of repeated trial and error in order to solve the above-mentioned problems, the present applicant has come up with a gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus according to the present invention.
The gas extraction / separation unit for underground gas-liquid mixed fluid observation device of the present invention pumps up a mixed fluid of water and gas, and separates the pumped-up mixed fluid into water and gas in a gas-liquid equilibrium state at a predetermined pressure. A gas extraction / separation unit used for an underground gas-liquid mixed fluid observation device that measures the amount and quality of the separated water, analyzes the separated gas, and records these measurement data, The inside of the gas-liquid separation container that maintains airtightness and is depressurized and separates the mixed fluid introduced into the inside into water and gas, and maintains the airtightness inside the gas-liquid separation container. However, a mixed fluid introduction valve mechanism for introducing the mixed fluid into the gas-liquid separation container, a water level sensor for continuously measuring the water level of the water introduced into the gas-liquid separation container, and the gas-liquid separation The gas introduced into the container A pressure sensor for measuring the air pressure of the gas, a water discharge pump valve mechanism for discharging the water from the gas-liquid separation container while maintaining air-tightness inside the gas-liquid separation container, and an air-tightness inside the gas-liquid separation container A gas extraction valve mechanism for extracting the gas from the gas-liquid separation container, and a pump valve for controlling the operation of the mixed fluid introduction valve mechanism, the water discharge pump valve mechanism, and the gas extraction valve mechanism Control means, and a quantification means for calculating the amount of water pumped from underground and the amount of extracted gas based on the water level measured by the water level sensor and the atmospheric pressure measured by the barometric pressure sensor.

  As in the gas extraction / separation unit of the present invention, the inside of the gas-liquid separation container is maintained and the mixed fluid introduction valve mechanism maintains the air-tightness inside the gas-liquid separation container using a decompressed gas-liquid separation container. However, the mixed fluid is introduced into the gas-liquid separation container, and the water discharge pump valve mechanism is configured to discharge water from the gas-liquid separation container while maintaining the airtightness inside the gas-liquid separation container. For example, when the mixed fluid is introduced into the gas-liquid separation container, it is only necessary to open the valve of the mixed fluid introduction valve mechanism, and it is not necessary to provide a pump on the introduction side to pump up the mixed fluid. For this reason, since the mixed fluid introduced into the gas-liquid separation container does not contain air due to pump operation, the amount of gas separated into a gas-liquid equilibrium state under reduced pressure is measured inside the gas-liquid separation container. By doing so, it becomes possible to measure the amount of underground gas with high accuracy.

  Moreover, if a water level sensor that continuously measures the water level of the water introduced into the gas-liquid separation container as in the gas extraction / separation unit of the present invention is provided, it is based on the water level measured by the water level sensor by the quantitative means. By calculating, the amount of water introduced into the gas-liquid separation container can be continuously quantified.

  Further, as in the gas extraction / separation unit of the present invention, a water level sensor that measures the water level of the water introduced into the gas-liquid separation container, and an atmospheric pressure sensor that measures the pressure of the gas introduced into the gas-liquid separation container If the water level sensor and the atmospheric pressure sensor are integrated with the gas-liquid separation container, the entire unit can be simplified and made compact.

  Further, in the gas extraction / separation unit of the present invention, the gas-liquid separation container further includes an ultrasonic generator that promotes separation of water and gas in the mixed fluid introduced into the gas-liquid separation container. It is possible to shorten the time until the water and gas separated inside reach a gas-liquid equilibrium state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments do not limit the present invention according to the claims.

Embodiment FIG. 1 is an explanatory diagram showing the configuration of a gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus according to an embodiment of the present invention.
The gas extraction / separation unit in FIG. 1 includes a gas-liquid separation container 1, a mixed fluid introduction valve mechanism 2, a water level sensor 3, an atmospheric pressure sensor 4, a water discharge pump valve mechanism 5, a gas extraction valve mechanism 6, A pump valve control means 7, a quantitative means 8, and an ultrasonic generator 13 are provided. In FIG. 1, 9 is a mixed fluid sampling tube for collecting ground mixed fluid, 10 is a water discharge tube for discharging water separated in the gas-liquid separation container 1, and 11 is the inside of the gas-liquid separation container 1. A gas transport pipe 12 for transporting the gas separated in step (1) toward a gas analysis / measurement means (not shown) is a slit pipe driven into the ground.

The gas-liquid separation container 1 is configured so that the inside thereof is kept airtight, and further depressurized to a predetermined pressure.
The mixed fluid introduction valve mechanism 2 includes an electromagnetic valve connected to the mixed fluid collection tube 9. Then, the mixed fluid is introduced into the gas-liquid separation container 1 while the gas-liquid separation container 1 is kept airtight by opening the electromagnetic valve of the mixed fluid introduction valve mechanism 2. .
The water level sensor 3 is provided integrally with the gas-liquid separation container 1 and is configured to continuously measure the water level of the water introduced into the gas-liquid separation container 1. In the example of FIG. 1, the water level sensor 3 is configured by a capacitance type water level sensor, but the water level sensor 3 continuously measures the water level of the water introduced into the gas-liquid separation container 1. Any type of water level sensor may be used as long as it is configured.
The atmospheric pressure sensor 4 is provided integrally with the gas-liquid separation container 1 and is configured to measure the atmospheric pressure of the gas introduced into the gas-liquid separation container 1.
The water discharge pump valve mechanism 5 includes an electromagnetic valve 5a connected to the water discharge pipe 10 and a pump 5b such as a tubing pump. Then, the electromagnetic valve 5a is opened and the pump 5b is operated to discharge water from the gas-liquid separation container 1 while maintaining the gas tightness inside the gas-liquid separation container 1.
The gas extraction valve mechanism 6 includes an electromagnetic valve connected to the gas transport pipe 11. And it is comprised so that gas may be extracted from the gas-liquid separation container 1 inside, maintaining the airtightness inside the gas-liquid separation container 1 by opening the electromagnetic valve of the gas extraction valve mechanism 6. FIG.
The pump valve control means 7 is connected to the mixed fluid introduction valve mechanism 2, the water level sensor 3, the atmospheric pressure sensor 4, the water discharge pump valve mechanism 5 (electromagnetic valve 5 a, pump 5 b), and the gas extraction valve mechanism 6. An arithmetic processing unit having software for controlling the operation of the mixed fluid introduction valve mechanism 2, the water discharge pump valve mechanism 5, and the gas extraction valve mechanism 6 based on the measurement values measured by the water level sensor 3 and the atmospheric pressure sensor 4. It is configured.
The quantification means 8 is composed of an arithmetic processing unit having software for calculating the amount of water pumped from the underground and the amount of extracted gas based on the water level measured by the water level sensor 3 and the atmospheric pressure measured by the atmospheric pressure sensor 4.
The ultrasonic generator 13 is attached to the gas-liquid separation container 1, and vibrates the mixed fluid introduced into the gas-liquid separation container 1 with ultrasonic waves to degas the gas dissolved in the liquid. The separation of water and gas in the mixed fluid introduced into the separation container 1 is promoted.

  In the gas extraction / separation unit of the present embodiment configured as described above, when the electromagnetic valve of the mixed fluid introduction valve mechanism 2 is opened under the control of the pump valve control means 7, the slit tube 12 is connected via the mixed fluid sampling tube 9. The mixed fluid of water and gas enters the inside of the gas-liquid separation container 1 that is sealed in a decompressed state. The mixed fluid that has entered the gas-liquid separation container 1 is separated into gas and water inside the gas-liquid separation container 1. The water level of the separated water rises inside the gas-liquid separation container 1, and the gas accumulates in the upper part of the gas-liquid separation container 1. At this time, the ultrasonic generator 13 vibrates the mixed fluid introduced into the gas-liquid separation container 1 with ultrasonic waves and degass the dissolved gas in the liquid. Separation from water is promoted. In addition, the gas and water separated in the gas-liquid separation container 1 approach the gas-liquid equilibrium state. The water level sensor 3 continuously measures the water level of the water introduced into the gas-liquid separation container 1.

When the water level sensor 3 measures that the water in the gas-liquid separation container 1 has reached the first water level, which is a predetermined upper position in the gas-liquid separation container 1, the mixed fluid is introduced by the control of the pump valve control means 7 The electromagnetic valve of the valve mechanism 2 is closed, the electromagnetic valve 5a of the water discharge pump valve mechanism 5 is opened, and the pump 5b is operated to maintain the gas tightness inside the gas-liquid separation container 1 while Water is sucked in from the inside of the separation container 1, and the water is discharged until the water in the gas-liquid separation container 1 falls to the second water level that is located above the gas-liquid separation container 1 and above the water discharge pipe 10. It is discharged to the outside through the pipe 10. When the water level sensor 3 measures that the water in the gas-liquid separation container 1 has dropped to the second water level, the electromagnetic valve 5a of the water discharge pump valve mechanism 5 is closed under the control of the pump valve control means 7. To do. Next, the electromagnetic valve of the gas extraction valve mechanism 6 is opened, and the gas inside the gas-liquid separation container 1 is not shown via the gas transport pipe 11 while maintaining the gas tightness inside the gas-liquid separation container 1. Extract toward the analysis and measurement means side. Then, when the atmospheric pressure sensor 4 measures that the pressure inside the gas-liquid separation container 1 has dropped to the pressure before introducing the mixed fluid, the electromagnetic valve of the gas extraction valve mechanism 6 is controlled by the pump valve control means 7. Closes.
During this time, the quantification means 8 calculates the amount of water pumped from the basement based on the water level measured by the water level sensor 3 and calculates the amount of gas pumped from the basement based on the atmospheric pressure measured by the pressure sensor 4. More specifically, the quantification means 8 calculates the amount of water pumped from the ground using the difference between the water level measured by the water level sensor 3 at the present time and the water level measured by the water level sensor 3 at the second water level. Further, the quantification means 8 calculates the amount of gas pumped up from the underground using a differential pressure between the atmospheric pressure measured by the atmospheric pressure sensor 4 at the present time and the atmospheric pressure before the mixed fluid is introduced. The calculated water amount and gas amount are recorded in a recording device (not shown).
Thereafter, the electromagnetic valve of the mixed fluid introduction valve mechanism 2 is opened, the mixed fluid is introduced into the gas-liquid separation container 1, and the same processing is repeated.

  According to the gas extraction / separation unit of the present embodiment, the mixed fluid introduction valve mechanism 2 uses the gas-liquid separation container 1 whose inside is kept airtight and decompressed, and the gas-liquid separation container 1 has an airtightness. The mixed fluid is introduced into the gas-liquid separation container 1 while maintaining the properties, and the water discharge pump valve mechanism 5 maintains the gas-tightness inside the gas-liquid separation container 1 while maintaining the gas-liquid separation container 1 inside. Since water is discharged from the gas-liquid separation container 1, it is only necessary to open the electromagnetic valve of the mixed fluid introduction valve mechanism 2 when introducing the mixed fluid into the gas-liquid separation container 1, and a pump is provided on the introduction side. Therefore, it is not necessary to pump up the mixed fluid. For this reason, since the mixed fluid introduced into the gas-liquid separation container 1 does not include air due to the operation of the pump, by measuring the amount of gas separated in the gas-liquid separation container 1, the underground gas Can be measured with high accuracy.

  Further, according to the gas extraction / separation unit of the present embodiment, the water level sensor 3 that continuously measures the water level of the water introduced into the gas-liquid separation container 1 is provided. By calculating based on the water level, the amount of water introduced into the gas-liquid separation container 1 can be quantified continuously.

  Further, according to the gas extraction / separation unit of the present embodiment, the water level sensor 3 that measures the water level of the water introduced into the gas-liquid separation container 1 and the pressure of the gas introduced into the gas-liquid separation container 1 are determined. Since the pressure sensor 4 for measurement is integrally provided, the entire unit can be simplified and made compact.

  Further, according to the gas extraction / separation unit of the present embodiment, since the ultrasonic generator 13 for promoting the separation of water and gas in the mixed fluid introduced into the gas-liquid separation container 1 is further provided, The time until the water and gas separated in the liquid separation container 1 are in a gas-liquid equilibrium state can be shortened.

  The operation control of the mixed fluid introduction valve mechanism 2, the water discharge pump valve mechanism 5, and the gas extraction valve mechanism 6 by the pump valve control means 7 in the gas extraction / separation unit of this embodiment is limited to the above-described control. Instead, the mixed fluid introduction valve mechanism 2 can introduce the mixed fluid into the gas-liquid separation container 1 while maintaining the gas-tightness inside the gas-liquid separation container 1, and the water discharge pump valve mechanism 5 can perform the gas-liquid separation. While maintaining the airtightness inside the container 1, water can be discharged from the inside of the gas-liquid separation container 1, and the gas extraction valve mechanism 6 maintains the airtightness inside the gas-liquid separation container 1, while separating the gas and liquid. Any control may be used as long as the gas can be extracted from the inside of the container 1.

  The gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus of the present invention is useful in a field where it is required to continuously monitor the status of groundwater and underground gas.

DESCRIPTION OF SYMBOLS 1 Gas-liquid separation container 2 Mixed fluid introduction | transduction valve mechanism 3 Water level sensor 4 Atmospheric pressure sensor 5 Water discharge pump valve mechanism 5a Electromagnetic valve 5b Pump 6 Gas extraction valve mechanism 7 Pump valve control means 8 Determination means 9 Mixed fluid sampling pipe 10 Water discharge pipe 11 Gas transport pipe 12 Slit pipe 13 Ultrasonic generator H Slit pipe P1 Sampling pipe CP Tubing pump CY Gas water separation cylinder FM Flow meter RC1, RC2, RC3 Recording device P2 Water transport pipe WM Water quality measuring instrument PDM Differential pressure gauge EV Electromagnetic valve P3 Gas transport tube CT Cold trap PM Pressure gauge QMS Mass spectrometer B Main body of gas water separation cylinder E Infrared light emitting device F Float R Infrared light receiving device

Claims (3)

Pumping up a mixed fluid of water and gas, separating the pumped mixed fluid into water and gas in a gas-liquid equilibrium state at a predetermined pressure, measuring the amount and quality of the separated water, and analyzing the separated gas A gas extraction / separation unit used in an underground gas-liquid mixed fluid observation device that records these measurement data,
A gas-liquid separation container that maintains airtightness inside and is decompressed, and separates the mixed fluid introduced into the interior into water and gas;
A mixed fluid introduction valve mechanism for introducing the mixed fluid into the gas-liquid separation container while maintaining the gas tightness inside the gas-liquid separation container;
A water level sensor that continuously measures the water level of the water introduced into the gas-liquid separation container;
A pressure sensor for measuring the pressure of the gas introduced into the gas-liquid separation container;
A water discharge pump valve mechanism for discharging the water from the gas-liquid separation container while maintaining the airtightness inside the gas-liquid separation container;
A gas extraction valve mechanism for extracting the gas from the gas-liquid separation container while maintaining the gas tightness inside the gas-liquid separation container;
A pump valve control means for controlling operations of the mixed fluid introduction valve mechanism, the water discharge pump valve mechanism and the gas extraction valve mechanism;
An underground gas-liquid mixed fluid observation apparatus comprising: a water level measured by the water level sensor and an air pressure measured by the pressure sensor; and a quantitative means for calculating the amount of water pumped from the underground and the amount of extracted gas. Gas extraction / separation unit. 2. The gas extraction / separation unit for an underground gas-liquid mixed fluid observation apparatus according to claim 1, wherein the water level sensor and the atmospheric pressure sensor are provided integrally with the gas-liquid separation container. The ground gas-liquid according to claim 1 or 2, further comprising an ultrasonic generator for promoting separation of water and gas in the mixed fluid introduced into the gas-liquid separation container. Gas extraction / separation unit for mixed fluid observation equipment.

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