JP2005156438A - Gas-liquid two phase sample analyzer and analysis method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine the quantities of a gas sample and a liquid sample W0 in the sample flowing in a sample main tube 1 respectively with excellent response. <P>SOLUTION: The sample is introduced into sample detection cell parts 13, 23 through two sample collection introduction tubes 11, 21 having different diameters D1, D2 from fluid flowing in the sample main tube 1. Infrared analyzers 10, 20 analyze the introduced sample and output results respectively. A quality operation device 8 determines the qualities of the gas sample and the liquid sample in the sample main tube 1 on the basis of output results from the infrared analyzers 10, 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a gas-liquid two-phase sample analyzer and an analysis method.

  As a conventional technique for measuring moisture in a gas-liquid mixed fluid, there is a steam quality control device described in Patent Document 1. The infrared wetness detecting means of this apparatus uses a pyroelectric element to detect the wetness of steam by utilizing the fact that infrared rays of a predetermined wavelength (approximately 1.9 μm) are absorbed very well by water droplets. The wetness is measured by measuring the change in the amount of infrared rays absorbed by the amount of water droplets in the steam pipe.

Here, the wetness represents the quality of the vapor, that is, the mass of the liquid contained in 1 kilogram of wet saturated vapor. The wetness is an index expressed as (1-x), where the dryness x represents the ratio of the mass of dry saturated steam to the total mass per unit volume of steam.
Japanese Patent No. 2873640

  However, the infrared wetness detection means described in Patent Document 1 can detect the total amount of water contained in the sample collected from the sample main tube, but the amount of water vapor contained in the gas phase and the liquid phase The amount of water droplets was not measured separately. For this reason, for example, the inside of the sample main is in a supersaturated water vapor state like a steam pipe and the condensed water flows as water droplets, and another part in the sample pipe even if the inside of the main sample is in an unsaturated water vapor state There is a problem that it is impossible to distinguish the transient state in which water generated or existed in the water is spattered by high-speed flow and flies away by local sampling.

This problem will be supplementarily described with reference to FIG. FIG. 7 is a diagram showing an output example of the infrared analyzer when the fluid flowing through the sample pipe is increased stepwise (H1 to H4) with the passage of time, the horizontal axis is the elapsed time, and the vertical axis is the moisture content. Is shown.
In the low humidity region (A region) where the amount of supplied water is small, infrared rays are absorbed in accordance with the amount of water vapor that is a gas sample. Next, in the B region where the amount of supplied water is slightly increased and fine water droplets are intermittently sucked, a “beard” -shaped superimposed output is shown by the sucked water droplets. In the region B where the “beard” -like superimposed output is intermittently generated, the gas moisture amount H3 is easily generated because it is intermittently generated. Therefore, the “beard” -like portion obtained by subtracting this moisture amount H3 is easy to distinguish. It is possible to determine the liquid moisture content for the superimposed output.

  However, when the amount of supplied water is further increased, the frequency of occurrence of water droplets increases, and in the region C where the frequency of water droplet inhalation increases, the “beard” -shaped superimposed output component observed as shown in FIG. However, since they overlap as shown in FIG. 8B, the apparent bottom of the “whisker” waveform does not correspond to the amount of gas sample, so that there is a problem that the superimposed output cannot be clearly determined. It was. That is, there is a problem that the boundary between the gas sample and the liquid sample is not clear and an apparent error occurs.

In such a gas-liquid two-phase state, even if a hygrometer generally used for measuring gas phase moisture content is applied, the indicated value of the hygrometer does not return to the upper limit due to the influence of the liquid sample, or The hygrometer is difficult to use because the output value is unstable, such as a decrease in the output value, and the responsiveness is not good even if the humidity is measured.
The present invention has been made paying attention to such problems, and an object of the present invention is to determine the amounts of a gas sample and a liquid sample in a sample flowing through a sample main tube with good response.

Therefore, in the present invention, the amount of the gas sample and the liquid sample in the fluid sample based on the output information of the analyzer obtained by sampling each of the fluid flowing through the sample main by at least two different types of sampling inlet pipes. Ask for.
Further, in the present invention, a switching valve that temporarily shuts off the flow of the sample main pipe or the flow of the flow dividing pipe of the sample main pipe is provided, the sample collection introducing pipe is connected to the sample main pipe or the flow dividing pipe near the switching valve, The state of these flows is selectively changed by switching the switching valve, and the amount of the gas sample and the liquid sample in the fluid sample is obtained from the collected sample by the analyzer.

  According to the present invention, there is an effect that the amount of the liquid sample can be accurately and responsively obtained even when the fluid sample flowing through the sample main pipe is in a state where many droplets of water droplets are generated.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram showing a gas-liquid two-phase sample analyzer according to the first embodiment of the present invention.
The gas-liquid two-phase sample analyzer is roughly divided into a first gas sample and a second gas sample that analyze a vapor gas sample and a condensed liquid sample (for example, H ₂ O) mixed in the fluid flowing through the sample main tube 1 with infrared rays. Infrared analyzers (analyzers) 10 and 20 and a quantity calculation device 8 for obtaining quantities (concentrations and quantities) of the gas sample and the liquid sample in the fluid sample based on the output information of these apparatuses 10 and 20. ing. Note that W0 indicates a liquid sample in the sample main tube 1.

The first infrared analyzer 10 collects a vapor state gas sample and a condensed liquid sample mixed in the fluid flowing through the main tube 1 via a first sample collection introduction tube 11 connected to the sample main tube 1. To do. The sample collected here is introduced into the first sample detection cell unit 13.
The internal pressure of the sample detection cell unit 13 is adjusted by a sample discharge pipe 15 and a negative pressure suction mechanism (pump) 16 connected to the sample discharge pipe 15. Note that the specifications of the first sample collection and introduction tube 11 and the second sample collection and introduction tube 21 are different, and the diameter D1 of the first sample collection and introduction tube 11 is larger than the diameter D2 of the second sample collection and introduction tube 21. It is formed small (D1 <D2). Therefore, the sample (liquid sample W 0) sucked by the negative pressure suction mechanism 16 is finely atomized and supplied into the sample detection cell unit 13. W1 indicates a liquid sample in the sample detection cell unit 13.

A transmission window (not shown) is provided at one end (upper side in the figure) and the other end (lower side in the figure) of the sample detection cell unit 13, respectively, so that infrared rays are transmitted through these transmission windows. Is provided with an infrared light source 12, and a sample detection mechanism 14 is provided at the other end.
Although not shown, the sample detection mechanism 14 detects the amount of attenuation of infrared rays emitted from the infrared light source 12 by using an infrared receiver via an infrared intermittent chopper, for example. The output signal of the infrared light receiver is configured to calculate the amount of attenuation of infrared light through the amplifier 17 and the signal processing device 18 to quantify the sample in the sample detection cell 13.

The second infrared analyzer 20 is provided in the same manner as the first infrared analyzer 10.
The second infrared analyzing apparatus 20 is located at substantially the same position as the sample main pipe 1 provided with the first sample collecting and introducing pipe 11 by the second sample collecting and introducing pipe 21 having a diameter larger than that of the first sample collecting and introducing pipe 11 described above. Take a sample.

  The internal pressure of the second sample detection cell unit 23 is adjusted by a sample discharge pipe 25 and a negative pressure suction mechanism 26 connected thereto. The diameter D2 of the second sampling / introducing tube 21 is larger than the diameter D1 of the first sampling / introducing tube 11 (D2> D1). Therefore, the sample (liquid sample W0) sucked by the negative pressure suction mechanism 26 is supplied into the sample detection cell unit 23 as a mist having a relatively large particle size. W2 indicates the liquid sample in the sample detection cell unit 23.

The infrared light source 22, the sample detection cell unit 23, the sample detection mechanism 24, the sample discharge pipe 25, the negative pressure suction mechanism (pump) 26, the amplifier 27, and the signal processing device 28 are the same as those used in the analysis device 10 described above. The same thing is used.
The quantity calculation device 8 receives the output signals calculated by the first and second infrared analysis devices 10 and 20. And based on these, the quantity of the gas sample in the fluid sample mentioned later and a liquid sample is calculated.

In addition, since the samples introduced into the sample detection cell units 13 and 23 by the negative pressure suction mechanisms 16 and 26 in both the analyzers 10 and 20 are quickly discharged, the liquid sample W0 in the sample main pipe 1 is discharged. Of the liquid sample W1, W2 atomized in the sample detectors 13 and 23 is substantially equal.
Next, the operation of this apparatus will be described.

In general, infrared attenuation is caused by absorption and scattering. Absorption is mainly caused by triatomic molecules such as water vapor (H ₂ O). On the other hand, scattering is caused by water droplets. It is known that the degree of scattering varies depending on the relationship between the size of particles such as water droplets and the wavelength of infrared rays (as representative references, for example, Haruyoshi Kuno, “Infrared Engineering”, The Institute of Electronics, Information and Communication Engineers) The first edition is March 20, 1994).

Even if the sample diameters D1 and D2 of the sample collection introduction pipes 11 and 21 are different as described above, the sample analyzers 10 and 20 perform negative pressure suction if the sample flowing through the sample main pipe 1 is only a gas sample. Thus, the state of the sample introduced into the detection cell units 13 and 23 remains as a gas sample.
However, when the liquid sample W0 is mixed in the sample flowing through the main pipe 1 and sucked, the diameters D1 and D2 of the sample collection introduction pipes 11 and 21 are different even if the negative pressure is sucked in the same manner. Therefore, the atomization states of the liquid samples W1 and W2 when introduced into the respective detection cells 13 and 23 are different. As described above, if the diameters D1 and D2 of the sample collection introduction pipes 11 and 21 of the sample analyzer 10 have a relationship of D1 <D2, the sample flowing through the sample main pipe 1 is detected via the sample collection pipe 11. When it is introduced into the nozzle 13, it is atomized and the average diameter of the particles W1 becomes relatively small. On the other hand, the sample (liquid sample W2) introduced into the detection cell 23 of the sample analyzer 20 is atomized and the average diameter of the particles is relatively large.

When the liquid samples W1 and W2 introduced into the detection cells 13 and 23 are sprayed, the infrared light is attenuated by scattering by the spray particles. However, since the spray particle diameter is different as described above, the degree of infrared scattering is different. It will be.
Therefore, when the output difference between the first and second sample analyzers 10 and 20 is taken, the influence due to the gas sample is shared by both sample analyzers 10 and 20 and is canceled out. Minutes remain because the degree of scattering differs between the two sample analyzers 10,20.

  For this reason, the quantity calculation device 8 calculates these output differences, and uses the correlation data between the output difference acquired in advance and the quantity of the liquid sample, based on the output difference values of both sample analyzers 10 and 20. Determine the volume of the liquid sample. Thus, even when the sample flowing through the sample main tube 1 is in the state of the C pattern and the D pattern in FIG. 7 described above, the sample detection cell units 13 and 23 of the analyzers 10 and 20 have the sample main tube 1 The liquid samples W1 and W2 obtained by atomizing the liquid sample W0 are supplied, and by analyzing these states, the amounts of the liquid samples W1 and W2 in the sample main tube 1 or the sample detection cell units 13 and 23 are analyzed. Can be obtained.

After calculating the quantities of the liquid samples W0, W1, and W2, the quantity of the gas sample is calculated from the output information of one of the sample analyzers 10 and 20.
Further, from the output waveform of one of the sample analyzers 10 and 20, the state of the liquid samples W0, W1 and W2 in the sample main tube 1 or the detection cell units 13 and 23 can be roughly known. As described above, FIG. 7 shows an output waveform example of the infrared analyzer when the supply of the liquid sample is increased step by step. It turns out that it is not collected. In the B pattern, the size of the water droplet can be determined from the height of the “beard” -shaped mountain. In the C pattern, the number of water droplets can be seen from the frequency of occurrence of the “beard” shape. In addition, when the fall characteristic is remarkably poor with respect to the sudden rise characteristic as in the D pattern, a tailing phenomenon is caused in the sample detection cell of the analyzer due to excessive water droplets or retention of water droplets. I understand that. Utilizing these pieces of information, the state of the liquid in the sample main tube 1, that is, the presence or absence of droplets in the main tube 1, the size and number of droplets, or the sample detection cell units 13 and 23 of the analyzers 10 and 20. It is qualitatively determined whether or not there are excessive droplets.

  If the state of the liquid samples W1 and W2 is searched with the waveform information of both the sample analyzers 10 and 20, the accuracy of detection accuracy further increases. Alternatively, the amount of moisture that generates tailing is slightly different depending on the changes in the diameters D1 and D2 of the sampling and introduction pipes. Therefore, the number of bits of information related to the amount of moisture increases, and the state of the liquid sample is more reliably estimated. You can increase the quality. When the state of the liquid sample can be estimated approximately, it becomes easy to estimate the state of the fluid in the sample main pipe 1 in combination with the amount of the gas sample.

  According to the present embodiment, a sample collection introduction tube for collecting a vapor state gas sample and a condensed liquid sample mixed in the fluid flowing through the sample main tube 1, the sample detection cell unit 13 whose internal pressure is adjusted, 23, a negative pressure suction mechanism 16, 26 for sucking and guiding the sample from the sample collection introduction pipe to the sample detection cell unit 13, 23 by negative pressure, and a sample for detecting the sample guided to the sample detection cell unit 13, 23 The gas-liquid two-phase sample analyzer having the detection mechanisms 17 and 27 has at least two different types of sample collection and introduction pipes 11 and 21 as sample collection and introduction pipes. Analyzers (infrared analyzers) 10 and 20 for analyzing samples collected through the respective devices, and a quantity calculation device 8 for obtaining quantities of a gas sample and a liquid sample in a fluid sample based on output information of the analyzers 10 and 20; , Provided. For this reason, even if the fluid sample flowing through the sample main pipe 1 is in a state where many splashed water droplets are generated, the amount of the liquid sample can be obtained accurately and with good response.

  Further, according to the present embodiment, at least two different types of sampling / introducing pipes 11 and 21 have different diameters D1 and D2, respectively. Therefore, the states of the liquid samples W1 and W2 of the samples introduced into the sample detection cell sections 13 and 23 (particle diameters of the liquid samples) are different, and the output values detected for these liquid samples W1 and W2 By taking the difference, the influence of the gas sample can be offset, and only output information related to the amount of the liquid samples W1 and W2 (for example, the amount of the liquid sample W0 in the sample main tube 1) can be obtained. The amount of the sample can be accurately and easily obtained with good response.

  In addition, according to the present embodiment, a gas sample in a vapor state and a liquid sample in a condensed state mixed in the fluid flowing through the sample main pipe 1 are collected in the sample collection introducing pipes 11 and 21, and the sample detection in which the internal pressure is adjusted is detected. A gas-liquid two-phase sample analysis method for detecting a sample guided to the sample detection cell units 13 and 23 by sucking a sample collected into the cell units 13 and 23 with a negative pressure, and at least two different types On the basis of the output information of the analyzers (infrared analyzers) 10 and 20 obtained by sampling with the sample collection introduction tubes 13 and 23, the amounts of the gas sample and the liquid sample in the fluid sample are obtained. For this reason, the output information is used in a complex manner as if solving the equation, and the effect of other undesirable amounts on the measurement of gas samples and / or liquid samples is effectively removed or reduced. Can do.

According to this embodiment, the state of the liquid is estimated based on the amount of the liquid sample. Therefore, it is determined whether or not there are droplets, the size and size of the droplets, or whether or not the number of droplets in the sample detection cell units 13 and 23 of the analyzers 10 and 20 is excessive, that is, whether the output is correct. can do.
Next, a second embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, as shown in the figure, a sample collection tube 2 communicating with the sample main tube 1 and a selection switching valve 3 connected to the sample tube 2 are newly provided, whereby the sample main tube 1 is connected to the infrared analyzer. (Analyzer) 10 and 20 are configured to guide the sample. The sample collection introduction pipes 11 and 21 are connected to the selection switching valve 3.
The selection switching valve 3 introduces the sample introduced from the sample main pipe 1 through the collection pipe 2 into one of the first sample collection introduction pipe 11 and the second sample collection introduction pipe 21. Thereby, the sample flowing through the sample main pipe 1 is selectively guided to the first infrared analysis device 10 or the second infrared analysis device 20.

Even in this case, the diameters D1 and D2 of the sample collection introduction pipes 11 and 21 are configured to be different (for example, D1 <D2). The other configurations in FIG. 2 may be the same as those described in the first embodiment, and thus description thereof is omitted.
3, unlike FIG. 2, the analyzer 30 is provided as one, the selection switching valve 3 is provided in the apparatus 30, and the sample flowing through the sample main pipe 1 is collected via the single sample collection pipe 2. The switching valve 3 is configured so that the diameters D1 ′ and D2 ′ are different (for example, D1 ′ <D2 ′) and can be switched to and introduced into two sampling introduction pipes 11a and 11b, respectively. The quantity calculation device 8 is incorporated in the analysis device 10 and is shown together with the signal processing device 18.

  2 and 3, the sample is alternately detected through the sample introduction pipes (11, 21 or 11a, 11b) having different specifications (different diameters) by switching the switching valve 3 (13, 13, 23). ) And the scattering influence part involving the liquid sample can be obtained as an output difference in time series. Note that the sample collection introduction pipe (11, 21 or 11a, 11b) shares the sample collection pipe 2, and this collection pipe 2 collects the sample from one position of the sample main pipe 1, so that the sample Compared to the case of sampling from a plurality of locations on the main tube 1, the sampling tube 2 does not affect the difference between the output values of the infrared analyzers 10 and 20.

  According to the present embodiment, the sampling tube 2 communicated with the sample main tube 1 and the selection switching valve 3 connected to the sampling tube 2 are provided. The selection switching valve 3 is a sample collected from the sampling tube 2. Are selectively introduced into at least two different types of sampling introduction pipes (11, 21 or 11a, 11b). For this reason, the calculation accuracy of the amount of the liquid sample can be improved without being affected by the position of sampling from the sample main pipe 1. 3, there are only two types of sampling inlet pipes (11, 21 or 11a, 11b) having different diameters D1 ′ and D2 ′, the sampling pipe 2 and the sample detection cell section 13. By using the negative pressure suction mechanism 16 and the sample detection mechanism 14 in common, variations in instrumentalities between the two types of analyzers 10 and 20 and variations due to the way in which the sampling tube 2 communicating with the sample main tube 1 is attached are output. It is possible not to be included in the value difference. That is, since only the difference in the liquid sample state of the sample introduced into the sample detection cell unit 13 can be reflected in the difference in the output value, the calculation accuracy for the liquid sample can be increased as a result.

Next, a third embodiment of the present invention will be described with reference to FIG.
In the present embodiment, a dead volume device 40 is newly provided. The dead volume device 40 is connected to the sample main tube 1 by a sampling tube 41. Switching valves 42 and 45 are provided in the pipe that communicates the collection pipe 41 with the dead volume section 43 and the negative pressure suction mechanism 26, respectively.

The switching valves 42 and 45 are capable of collecting a sample from the sample main tube 1 via the collection tube 41 and selectively sucking and guiding the sample to the dead volume unit 43.
The dead volume device 40 is provided with a communication pipe 44 connected to the switching valve 3. As shown in the figure, a projection wall 43 a is formed in the dead volume portion 43 so as to cover the communication pipe 44, so that the communication pipe 44 does not directly suck the spray sucked from the collection pipe 41.

Next, the operation of this embodiment will be described.
The operation mode by the communication switching of the switching valves 3, 42, 45 can realize at least the following two sampling modes.
One of them is that the switching valves 42 and 45 arranged before and after the dead volume section 43 are blocked so that there is no flow inside the dead volume section 43, and the infrared analyzer 10 is connected to the sample main pipe. This is a mode in which the sample in the dead volume 43 is collected by being separated from 1 (a suction mode from within the dead volume unit 43). Thereby, the gas sample component in the case of sucking the sample in the closed dead volume portion 43 is obtained.

  The other is a mode in which the infrared analyzer 10 collects a sample of the sample main tube 1 and introduces the sample of the sample main tube 1 into the dead volume section 43 (aspiration mode from the sample main tube 1). Since the gas sample and the liquid sample are collected in the sample main tube suction mode, the amount of the liquid sample can be obtained by subtracting the gas sample obtained in the dead volume suction mode. These two operation modes operate alternately, and at least the dead volume portion sample suction mode is switched in a short time.

  According to the present embodiment, the dead volume section 43 for retaining the sample collected from the sample main pipe 1 is provided, and at least one of two different types of sample collection introduction pipes 2, 11, 41, 44 is a dead volume. The sample was collected via the unit 43, and the state of the dead volume in the dead volume unit 43 (the presence or absence of dead volume or the size of the dead volume) was selectively switched and connected to the sample detection cell unit 13. For this reason, by collecting the sample in the dead volume portion 43 that is temporarily cut off from the sample main pipe 1, it is possible to collect only the gas sample without the liquid sample. As a result, the gas sample and the liquid The sample volume can be easily separated.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
In FIG. 5, a branch pipe 51 for splitting the sample main pipe 1 is newly provided, and two switching valves 52 and 53 are provided in the branch pipe 51, and the analyzer 10 is provided between these switching valves 52 and 53. The sampling introduction pipe 11 is connected.
In FIG. 6, one switching valve 52 is disposed upstream of the sampling portion of the flow dividing pipe 51. Similarly to the flow dividing pipe 51, another flow dividing pipe 54 is provided in the sample main pipe 1, and one switching valve 55 is disposed on the upstream side of the flow dividing pipe 54.

The switching valve 52 in FIG. 5 or the switching valve 52 in FIG. 6 can block and open the flow in the flow dividing pipe 51. When the switching valve can be arranged directly on the sample main pipe 1, that is, when the flow in the sample main pipe 1 can be directly cut off and opened, it is not necessary to set the flow dividing pipes 51 and 54. In this case, the sample collection part is located downstream of the switching valve disposed in the sample main pipe 1.
Next, the operation of this embodiment will be described.

First, a state in which the switching valves 52 and 53 in FIG. 5 are opened, that is, a gas sample and a liquid sample are allowed to flow from the sample main pipe 1 into the branch pipe 51 (first mode). Next, only the gas sample is collected in a state where at least the switching valve 52 is shut off, that is, in a state where the flow from the upstream side of the branch pipe 51 is stopped (second mode). This creates a sample state with no water droplets flying away.
Infrared analyzer 10 introduces into sample detection cell part 13 from distribution pipe 51 via sample collection introduction pipe 11, and identifies the quantity of a gas sample and a liquid sample from the time series output value in these two modes.

  Here, the switching valve 55 shown in FIG. 6 operates in conjunction with the switching valve 52 so that the opening / closing movement is reversed. As a result, adverse effects caused by the blockage of the gas flowing through the flow dividing pipe 51 are reduced. That is, when the switching valve 51 is closed, the flow is bypassed by the flow dividing pipe 54, thereby reducing the influence on the upstream side and the downstream side. It should be noted that if the adverse effects due to the shutoff of the gas can be ignored by reducing the diversion flow rate, it is not necessary to set the diversion pipe 54 and the switching valve 55.

Further, when a switching valve is arranged in the sample main pipe 1 and the flow of the main pipe 1 is directly cut off, a bypass pipe equivalent to the sample main pipe 1 (corresponding to the shunt pipe 54 in FIG. 6) and a switching valve 55 ( Needless to say, the same effect as that of the present embodiment can be obtained.
Although the above has shown about analyzing water vapor (H ₂ O) as a sample, the present invention is not limited to H ₂ O, but is mixed in a gas phase and a liquid phase in other fluids. The present invention can also be applied to analysis of a sample field where a liquid phase sample flows and flows into a sample or a gas phase fluid.

  According to the present embodiment, the sample collection introduction tube 11 for collecting a sample in the fluid flowing through the sample main tube 1, the sample detection cell unit 13 in which the internal pressure is adjusted, and the sample detection from the sample collection introduction tube 11. In a gas-liquid two-phase sample analyzer including a negative pressure suction mechanism 16 that sucks and guides to a cell unit 13 by a negative pressure, and a sample detection mechanism 14 that detects a sample guided to the sample detection cell unit 13. The main pipe 1 or the sample main pipe 1 is provided with branch pipes 51 and 52 that branch off the flow, and the branch valves 51, 52, and the switching valves 52, 53, and 55 that temporarily shut off the flow of the branch pipes 51 and 52. A sample main pipe 1 or a diversion pipe 51 in the vicinity of the switching valve 52 is connected, and the flow state is selectively changed by switching the switching valve 52, and each sample collected is gas sample in the fluid sample by the analyzer 10. And liquid sample fractions The seek. Therefore, it is possible to create a sample state in which there is no flowing water droplets, and the amount of the gas sample can be easily obtained from the output information of the infrared analysis device 10 at this time.

  In addition, according to the present embodiment, the vapor detection gas sample and the condensed liquid sample mixed in the fluid flowing through the sample main pipe 1 are collected in the sample collection introduction pipe 11, and the sample detection cell section in which the internal pressure is adjusted. In the gas-liquid two-phase sample analysis method for detecting the sample led to the sample detection cell unit 13 by sucking the sample collected by negative pressure and guiding the sample to the sample detection cell unit 13, the sample is introduced by at least two different types of sample collection introduction pipes 11. Based on the output information of the analyzer (infrared analyzer 10) obtained by sampling, the amounts of the gas sample and the liquid sample in the fluid sample are obtained. This effectively removes or reduces the effects of other undesirable amounts on the measurement of gas and / or liquid samples, since the output information is used in a complex way as if solving the equation. Can do.

The figure which shows the structure of 1st Embodiment. The figure which shows the structure of 2nd Embodiment. The figure which shows the structure of 2nd Embodiment. The figure which shows the structure of 3rd Embodiment. The figure which shows the structure of 4th Embodiment. The figure which shows the structure of 4th Embodiment. Diagram showing waveform pattern for each liquid sample The figure which shows the conventional problem (C pattern part of FIG. 7)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel main pipe 2 Sampling pipe 3 Switching valve 8 Quantity calculating device 10,20,30 Infrared analyzer 11,21 Sample collection introduction pipe 12,22 Infrared light source 13,23 Sample detection cell 14,24 Sample detection mechanism 15,25 Sample Discharge pipes 16 and 26 Negative pressure pumps 17 and 27 Amplifiers 18 and 28 Signal processing device 40 Dead volume device 41 Sampling introduction pipes 42 and 45 Switching valve 43 Dead volume section 44 Communication pipe 46 Negative pressure pumps 51 and 54 Dividing pipe 52 53,55 selector valve

Claims (8)

A sample collection introduction tube for collecting a vapor state gas sample and a condensed liquid sample mixed in the fluid flowing through the sample main pipe, a sample detection cell section whose internal pressure is adjusted, and the sample collection introduction tube A gas-liquid two-phase sample analyzer comprising: a negative pressure suction mechanism that sucks and guides to the sample detection cell portion from the sample detection cell portion; and a sample detection mechanism that detects the sample guided to the sample detection cell portion;
Having at least two different types of sampling inlet pipes as the sampling inlet pipe;
An analyzer for analyzing each sample collected through the sampling introduction tube;
A quantity calculation device for obtaining quantities of a gas sample and a liquid sample in a fluid sample based on output information of the analyzer;
A gas-liquid two-phase sample analyzer, comprising:   2. The gas-liquid two-phase sample analyzer according to claim 1, wherein the at least two different types of sampling and introducing pipes have different diameters. A sampling tube communicating with the sample main pipe,
A selection switching valve connected to the sampling pipe,
The gas-liquid two-phase sample according to claim 1 or 2, wherein the selective switching valve selectively introduces the sample collected from the collection tube into the at least two different types of sample collection introduction tubes. Analysis equipment. A dead volume part for retaining a sample collected from the sample main pipe,
One of the at least two different sample collection and introduction tubes is configured to sample through the dead volume section, and the sample detection is performed by selectively switching the state of the dead volume in the dead volume section. The gas-liquid two-phase sample analyzer according to any one of claims 1 to 3, wherein the gas-liquid two-phase sample analyzer is connected to a cell unit. A sample collection introduction pipe for collecting a sample in a fluid flowing through the sample main pipe, a sample detection cell section whose internal pressure is adjusted, and the sample is sucked into the sample detection cell section from the sample collection introduction pipe by a negative pressure. A gas-liquid two-phase sample analyzer comprising: a negative pressure suction mechanism that guides the sample; and a sample detection mechanism that detects the sample guided to the sample detection cell unit;
A shunt pipe for branching the flow of the sample main pipe,
A switching valve that temporarily shuts off the flow of the sample main pipe or the shunt pipe,
Connecting the sample collection introduction pipe to a sample main pipe or a branch pipe in the vicinity of the switching valve;
These flow states are selectively changed by switching the switching valve,
A gas-liquid two-phase sample analyzer characterized in that an amount of a gas sample and a liquid sample in a fluid sample is obtained from each sample collected by an analyzer. A gas sample in a vapor state and a liquid sample in a condensed state mixed in a fluid flowing through the sample main pipe are collected in a sample collection introduction pipe, and the sample collected in a sample detection cell section in which the internal pressure is adjusted by a negative pressure. In the gas-liquid two-phase sample analysis method for detecting a sample guided by suction and guided to the sample detection cell unit,
Gas-liquid two-phase sample analysis characterized in that the quantity of a gas sample and a liquid sample in a fluid sample is obtained based on output information of an analyzer obtained by sampling with at least two different types of sampling introduction pipes Method. The sample in the fluid flowing through the sample main pipe is collected in the sample collection introduction pipe, and the collected sample is sucked and guided to the sample detection cell section whose internal pressure is adjusted, and led to the sample detection cell section. A gas-liquid two-phase sample analysis method for detecting a read sample,
Switch to temporarily shut off the flow of the shunt pipe branched from the sample main pipe, selectively change the flow state of the shunt pipe,
A gas-liquid two-phase sample analysis method, characterized in that an amount of a gas sample and a liquid sample in a fluid sample is obtained from each sample collected by an analyzer.   The gas-liquid two-phase sample analysis method according to claim 6 or 7, wherein a liquid state is estimated based on an amount of the liquid sample.

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