TW201928323A - Dissolved gas sampling assembly - Google Patents

Abstract

A dissolved gas sampling assembly includes a gas permeable annulus membrane, a support member, a plurality of support balls, a sampling tube, a seal ring and a restriction ring. The gas permeable annulus membrane forms a storage space. The support member is disposed in the storage space, and the support member divides the storage space into a plurality of sub-spaces. The support balls are respectively disposed in the sub-spaces. The sampling tube has a gas containing space, and the gas containing space is connected to the storage space. The seal ring is disposed on one side of the storage space. The restriction ring is sleeved on the gas permeable annulus membrane and corresponds to the seal ring. The restriction ring is configured to bind the gas permeable annulus membrane and the seal ring onto the sampling tube.

Description

Water soluble gas sampling component

The present invention relates to a water-soluble gas sampling assembly, and more particularly to a water-soluble gas sampling assembly that increases the contact area of a gas permeable membrane with a sampling fluid.

In order to study the fluid properties in the formation, it is usually drilled at the surface and sampled deep into the well through a downhole sampling device. After sampling the device to be sampled, the researchers used sample analysis to obtain information such as fluid pressure, temperature, ion concentration, and composition.

In general, downhole fluid sampling devices collect liquids and gases from the formation. Among them, the collection of water-soluble gas generally uses a diffusion gas sampling tube, which is coated with a gas permeable membrane at the sampling nozzle, so that the gas in the water penetrates the gas permeable membrane and enters the sampling tube. The conventional diffusion gas sampling tube is an open sampling device, that is, the sampling tube and the gas permeable membrane are directly exposed to the sampling environment. Therefore, during the process of placing the sampling device in the predetermined acquisition depth position, or during the process of pulling the sampling device back to the ground, the gas in the well water will continue to diffuse into the sampling tube, so that the collected samples will be contaminated by gases of different depths. It is impossible to get accurate analysis data. In addition, the conventional diffusion type gas sampling tube has a small contact area with the well water, so that the speed of collecting the gas sample is slow, and the working time cost is increased.

The present invention provides a water-soluble gas sampling assembly for solving the problem that the sampling of gas samples in the prior art is time consuming and susceptible to contamination.

The water-soluble gas sampling assembly disclosed in one embodiment of the present invention comprises an annular gas permeable membrane, a support member, a plurality of support balls, a sampling tube, a sealing ring and a bundle of rings. The annular gas permeable membrane has an accommodating space. The support member is disposed in the accommodating space, and the support member separates the accommodating space from the plurality of connected sub-spaces. The support balls are respectively disposed in the subspace. The sampling tube has a gas storage space, and the gas storage space communicates with the accommodating space. The seal ring is located at one end of the accommodating space. The collar is sleeved on the annular gas permeable membrane and corresponds to the sealing ring. The collar is used to sleeve the annular gas permeable membrane and the sealing ring to the sampling tube.

A water-soluble gas sampling assembly according to another embodiment of the present invention comprises an annular gas permeable membrane, a support member, a sampling tube, a sealing ring and a bundle of rings. The annular gas permeable membrane has an accommodating space. The support member is disposed in the accommodating space. The sampling tube has a gas storage space, and the gas storage space communicates with the accommodating space. The seal ring is located at one end of the accommodating space. The collar is sleeved on the annular gas permeable membrane and corresponds to the sealing ring. The collar is used to sleeve the annular gas permeable membrane and the sealing ring to the sampling tube.

According to the water-soluble gas sampling assembly disclosed in the above embodiment, by providing a support member and a support ball in the annular gas permeable membrane, the support ball is fixed through the support member, so that the support balls can be arranged in a stacked manner in the annular gas permeable membrane to support The annular gas permeable membrane maintains the diameter of the annular gas permeable membrane larger than the diameter of the sampling tube, thereby increasing the contact area of the annular gas permeable membrane with the fluid, and increasing the flow area of the gas in the accommodating space, which helps to increase the rate of water-soluble gas collection. To shorten the sampling time. In addition, the speed of gas permeation can be further increased by supporting the spacing of the support balls.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

The detailed features and advantages of the embodiments of the present invention are set forth in the Detailed Description of the Detailed Description. The objects and advantages of the present invention can be readily understood by those of ordinary skill in the art in the <RTIgt; The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

1 to FIG. 3, FIG. 1 is a schematic structural view of a fluid sampling device according to a first embodiment of the present invention, FIG. 2 is an enlarged schematic view of the water-soluble gas sampling assembly of FIG. 1, and FIG. A schematic cross-sectional view of the gas permeable membrane taken along line AA.

The fluid sampling device 1 of the present embodiment includes a first housing 10, a second housing 20, a third housing 30, a lifting ring 91, a weighting element 92, a conduit 40, a filter member 93, and a A liquid take-up bottle 50, a pressure valve 60, a first valve member group 94, a second valve member group 95, and three water-soluble gas sampling assemblies 70 are provided.

The first housing 10 has a first chamber 100 and a first inlet 110, and the first inlet 110 communicates with the first chamber 100.

The second housing 20 is disposed on a side of the first housing 10 , and the second housing 20 has a second chamber 200 , a second inlet 210 , and a second outlet 220 , and the second inlet 210 and the second outlet 220 . The second chamber 200 is connected. The second outlet 220 of the second housing 20 communicates with the first inlet 110 of the first housing 10.

The third housing 30 is disposed on a side of the second housing 20 opposite to the first housing 10. The third housing 30 has a third chamber 300, a third inlet 310, and a third outlet 320, and a third The inlet 310 and the third outlet 320 communicate with the third chamber 300. The third outlet 320 of the third housing 30 communicates with the second inlet 210 of the second housing 20.

The lifting ring 91 is disposed on a side of the third housing 30 opposite to the second housing 20 for the cable (not shown) to pass through. In the present embodiment, the fluid sampling device 1 is suspended from the water well by a cable drop to perform sampling of the well water and gas.

The weighting element 92 is disposed on a side of the first casing 10 opposite to the second casing 20, thereby increasing the overall weight of the fluid sampling device 1, and preventing the fluid sampling device 1 from being affected by the buoyancy of the fluid in the well and the upwelling of the fluid. well. The feature of the present embodiment having the weighting element is not intended to limit the present invention. In other embodiments, the fluid sampling device can select whether to set the weighting element according to actual needs. In addition, the position where the weighting element is disposed in this embodiment is not used to limit the present invention. In other embodiments, the weighting element may be disposed at different positions in the fluid sampling device according to actual needs.

The conduit 40 passes through the third outlet 320 and the second inlet 210 and passes through the second chamber 200 and the third chamber 300. The conduit 40 has a first-class channel 430 and a first port 410 and a second port 420 at opposite ends of the flow channel 430. The first port 410 communicates with the second outlet 220 and the second port 420 communicates with the third inlet 310. Thereby, the well water in the well can enter the fluid sampling device 1 via the third inlet 310 and be delivered to the first chamber 100 and the liquid collection bottle 50 through the conduit 40.

The filter member 93 is disposed at the first port 410 of the conduit 40 to filter suspended matter in the fluid in the well to avoid the problem of fluid leakage caused by the suspended matter being caught in the valve member.

The liquid take-up bottle 50 is located in the second chamber 200 and has a liquid storage space 500. The liquid take-up bottle 50 is connected to the line 40 and the liquid storage space 500 is connected to the flow path 430 to collect the well water in the flow path 430 from the liquid storage space 500. In the present embodiment, the liquid take-up bottle 50 is a high-pressure liquid-removing bottle, which can collect the high-pressure liquid in the deep underground and maintain the pressure in the bottle to obtain the well water sample in the undecompressed state, thereby facilitating the improvement of the sampling analysis data. Reliability. However, the present invention is not limited thereto. In other embodiments, the fluid sampling device can adopt a liquid take-up bottle having different degrees of compression according to actual needs.

The pressure valve 60 is located in the third chamber 300 and is disposed on the line 40. The pressure valve 60 is located at the outlet of the filter member 93 and away from one end of the third inlet 310, so that the well water can first flow through the filter member 93 to prevent the suspended matter in the well water from directly flowing into the pressure valve 60, thereby causing the pressure valve 60 to be closed. There is a problem with fluid leakage. In the present embodiment, the pressure valve 60 is an adjustable pressure valve. By setting different pressures to the adjustable pressure valve, fluid samples of different depths in the well can be taken. In detail, for different sampling depth requirements, the critical pressure value of the relative depth can be set to the adjustable pressure valve before sampling. When the fluid sampling device 1 reaches the predetermined depth, the water pressure will exceed the preset of the adjustable pressure valve. The critical actuation pressure value causes the valve of the adjustable pressure valve to open for sampling of the depth fluid. After the sampling is completed, the fluid sampling device 1 is pulled back to the ground. During the ascent, when the water pressure around the fluid sampling device 1 is less than the critical operating pressure value preset by the adjustable pressure valve, the adjustable pressure is The valve of the valve will close, thus avoiding the collection of fluid samples of other depths.

The first valve member group 94 is disposed at the first inlet 110 of the first housing 10 such that the first chamber 100 has a sealed state and an open state. In detail, in the present embodiment, the first valve member group 94 includes a first one-way valve 941 and a first ball valve 942. The first one-way valve 941 and the first ball valve 942 are disposed adjacent to the pipeline 40. . The first check valve 941 allows the well water to flow in a direction from the second chamber 200 to the first chamber 100 to prevent the well water that has flowed into the first chamber 100 from flowing back into the pipeline 40. The first ball valve 942 is used to open or block the flow passage 430 of the pipeline 40 to make the first chamber 100 a closed state or an open state. When the fluid sampling device 1 is sampling, the first ball valve 942 opens the flow passage 430 to open the first chamber 100 to collect the well water. When the sampling of the fluid sampling device 1 is completed, the first ball valve 942 can close the flow channel 430, so that the first chamber 100 is in a sealed state to prevent the well water from continuously flowing into the first chamber 100.

The second valve member group 95 is disposed between the liquid take-up bottle 50 and the pipe 40, so that the liquid storage space 500 has a blocked state and a connected state. In detail, in the embodiment, the second valve member group 95 includes a second one-way valve 951 and a second ball valve 952 disposed adjacent to each other. The second check valve 951 allows the well water to flow in one direction from the flow passage 430 to the liquid storage space 500 to prevent the well water that has flowed into the liquid storage space 500 from flowing back into the pipeline 40. The second ball valve 952 is used to open or close the flow channel 430 to make the liquid storage space 500 a blocked state or a connected state. When the fluid sampling device 1 is sampling, the second ball valve 952 opens the flow passage 430 to make the liquid storage space 500 in a connected state to collect the well water. When the sampling of the fluid sampling device 1 is completed, the second ball valve 952 can close the flow channel 430, so that the liquid storage space 500 is in a blocking state to prevent the well water from continuously flowing into the liquid storage space 500.

The water soluble gas sampling assembly 70 is disposed in the first chamber 100 to collect gas in which the first chamber 100 is dissolved in the well water. As shown in FIG. 2 and FIG. 3 , each water-soluble gas sampling assembly 70 includes an annular gas permeable membrane 710 , a support member 720 , a plurality of support balls 730 , two sampling tubes 740 , two sealing rings 750 , and two bundle rings 760 . .

The annular gas permeable membrane 710 has an accommodating space 711. The annular gas permeable membrane 710 allows gas dissolved in the well water to penetrate into the accommodating space 711 for gas collection. In this embodiment, the annular gas permeable membrane 710 is a porous rubber tube, which is made of Natural Rubber (NR), Fluorinated Silicone Rubber (FLS), Silicone Rubber (SI or Silicone Rubber, VMQ), Nitrile Rubber (NBR), Butyl Rubber (BR) or Dimethy Silicon Rubber (DSR), but not limited to this.

The support member 720 is disposed in the accommodating space 711 to support the annular gas permeable membrane 710 so that the annular gas permeable membrane 710 does not collapse due to the pressure of the well water, thereby maintaining the accommodating space 711 of the annular gas permeable membrane 710, so that the gas can be worn. The annular gas permeable membrane 710 penetrates into the accommodating space 711. In this embodiment, the support member 720 is a porous tube and includes a main body 721 and a plurality of supporting thin tubes 722. The support thin tube 722 extends outward from the main body 721 to separate the accommodating space 711 from the plurality of sub-spaces.

The support balls 730 can be, for example, glass beads, steel balls or plastic beads, respectively disposed in the subspace between the main body 721 and the supporting capillary 722 to further provide support for the annular gas permeable membrane 710, thereby maintaining the accommodation of the annular gas permeable membrane 710. Space 711. In this embodiment, the support balls 730 are fixed through the support member 720, so that the support balls 730 can be arranged in a stacked manner to support the annular gas permeable membrane 710, thereby increasing the contact area of the annular gas permeable membrane 710 with the fluid, thereby contributing to the improvement of the water-soluble gas. The rate of acquisition.

In addition, since the support balls 730 are in the shape of a sphere, when they are arranged in parallel, the support members may have a larger gap than the other shapes, so that a larger flow area can be formed in the accommodation space 711.

The sampling tubes 740 each have a gas storage space 741, and the gas storage space 741 communicates with the accommodating space 711 to collect gas samples. The two sealing rings 750 are respectively located at two ends of the accommodating space 711, and the two beam rings 760 are sleeved on the annular gas permeable membrane 710 and respectively correspond to the positions of the two sealing rings 750. The inner diameter of the sealing ring 750 is larger than the outer diameter of the sampling tube 740, and the sampling tube 740 is disposed through the sealing ring 750, and the annular gas permeable membrane 710 and the sealing ring 750 are fixedly sleeved on the sampling tube 740 through the beam loop 760 to avoid The water body flows into the accommodating space 711 or the gas storage space 741 from the gap between the annular gas permeable membrane 710, the seal ring 750, and the sampling tube 740.

In the present embodiment, one end of each sampling tube 740 away from the annular gas permeable membrane 710 is sealed with one end plug 742, and the end plug 742 can be, for example, a metal sealing joint, but the invention is not limited thereto. In other embodiments, the end of the sampling tube remote from the annular gas permeable membrane can be sealed, for example, by welding or pressure. Furthermore, the type of end plug of this embodiment is not intended to limit the invention. In other embodiments, the sampling tube can adopt different types of end plugs according to actual needs.

In the present embodiment, the sampling tube 740 can be, for example, a copper tube, a SUS304 stainless steel tube, or a SUS316 stainless steel tube. In addition, the sampling tube 740 can also be made of an acid-resistant material, such as a titanium tube, a dual-phase steel tube, or a nickel-chromium or nickel-chromium-molybdenum alloy tube. The example of a dual-phase steel pipe is that the yield strength is up to 400 MPa to 550 MPa, which is about twice that of ordinary stainless steel, and it has better resistance to pitting, crevice corrosion, stress corrosion and corrosion fatigue. performance. However, the material of the sampling tube is not intended to limit the present invention. In other embodiments, the sampling tube can be made of other materials according to actual needs.

In the present embodiment, the seal ring 750 can be, for example, a Teflon ring, a nylon ring, a rubber ring, or a seal ring made of plastic steel, but the invention is not limited thereto. In other embodiments, the seal ring can be made of a seal made of different materials according to actual needs.

As shown in FIG. 2, in the present embodiment, the annular gas permeable membrane 710 is sleeved on the sealing ring 750. A diameter D3 of the annular gas permeable membrane 710 is larger than a diameter D2 of the sealing ring 750 and a diameter D1 of the sampling tube 740. Thereby, the flow area of the gas in the accommodating space 711 can be increased, thereby increasing the rate at which the gas flows into the gas storage space 741 to shorten the sampling time. Preferably, the ratio of the diameter D1 of the sampling tube 740 to the diameter D3 of the annular gas permeable membrane 710 may be less than 0.5.

In the present embodiment, the number of the water-soluble gas sampling assemblies 70 is three, but the invention is not limited thereto. In other embodiments, the fluid sampling device can provide other quantities of water soluble gas sampling assembly in the first chamber as needed.

In the present embodiment, the conduit 40 has a split structure in the second chamber 200 to divert the fluid to the liquid take-up bottle 50 and the first chamber 100, but the invention is not limited thereto. In other embodiments, the pipeline may have no split structure and directly connect the third inlet and the liquid take-up bottle, and then connect the liquid take-up bottle and the first chamber with a second pipeline, for example, so that the well water flowing in from the third inlet is first Enter the liquid take-up bottle and flow into the first chamber through the second line.

In this embodiment, the fluid sampling device 1 further includes a third ball valve 96, a fourth ball valve 97, and a fifth ball valve 98. The third ball valve 96 is disposed on the pipeline 40 between the pressure valve 60 and the diverting structure, the fourth ball valve 97 is disposed in the liquid take-up bottle, and the fifth ball valve 98 is disposed between the diverting structure and the first valve member group 94. In this embodiment, the first ball valve 942 and the second ball valve 952 are matched by the third ball valve 96 and the fifth ball valve 98, and the flow channel 430 of the pipeline 40 can be blocked, so that the first chamber 100 and the second chamber 200 are respectively The third chambers 300 are isolated and sealed from each other to facilitate assembly and disassembly of the three housings 10, 20, 30 of the fluid sampling device 1. In addition, the fourth ball valve 97 is configured to connect a pressure gauge 99 for cavity pressure interpretation after the fluid sampling device 1 is sampled and pulled back to the ground.

In detail, in the present embodiment, the first housing 10, the second housing 20, and the third housing 30 of the fluid sampling device 1 are detachably assembled into a tubular sampling device. Thereby, after the sampling is completed, the chambers in the respective housings can be sealed with the valve members to surely store the samples in the respective housings, and then the housing is disassembled to facilitate the water-soluble gas sampling assembly 70 and The replacement of the liquid take-up bottle 50 can speed up the sampling of the fluid at each depth, and facilitates the sample management of the water-soluble gas sampling assembly 70 and the liquid take-up bottle 50.

In addition, since the water-soluble gas sampling component 70 is disposed in the first chamber 100 of the first casing 10, it is suspended into the water well for a period of time, so that after the first chamber 100 is filled with the well water, the sampling tube 740 is made to be in memory. There is a water-soluble gas, and then the fluid sampling device 1 is pulled to change the pressure value of the depth thereof, so that the pressure valve 60 is closed, and when the sampling device 1 is pulled to the surface, the first casing 10 is removed, and the sampling tube is removed. The 740 is sealed at the interface of the sealing ring 750 on one side of the end plug 742, the sampling tube 740 and the sealing ring 750 are separated from the water-soluble gas sampling assembly 70, and the sealing portion of the sampling tube 740 is reamed for water-soluble gas analysis. At the same time, the fluid sampling device 1 can replace another water-soluble gas sampling component 70 to perform the sampling operation of the next group, thereby achieving the purpose of saving the sampling time cost.

Moreover, the water soluble gas sampling assembly 70 is disposed in the first chamber 100 to prevent the water soluble gas sampling assembly 70 from being directly exposed to the water well. Thereby, during the ascending or descending of the fluid sampling device 1, the water-soluble gas sampling assembly 70 is not contaminated by well water of other depths, thereby obtaining a highly reliable gas sample.

However, the fluid sampling device of the present embodiment includes three housing features that are not intended to limit the present invention. In other embodiments, the fluid sampling device may include, for example, two housings, which will take the liquid bottle and pressure. The valve is disposed in the same housing and the water soluble gas sampling assembly is disposed in the other housing.

Referring to FIG. 4 and FIG. 5, FIG. 4 is a schematic structural view of a water-soluble gas sampling assembly according to a second embodiment of the present invention, and FIG. 5 is a cross-sectional view of the annular gas permeable membrane of FIG. 4 taken along line B-B.

The fluid sampling device of the present embodiment is similar to the fluid sampling device 1 of the first embodiment, except that the water-soluble gas sampling assembly 70b of the present embodiment is not provided with a supporting ball, and the supporting member 720b of the embodiment is a porous tube. . On the one hand, the porous tube can support the annular gas permeable membrane 710b through the tube wall, so that the annular gas permeable membrane 710b is not collapsed by the pressure of the well water to maintain the contact area of the annular gas permeable membrane 710b with the well water; on the other hand, the porous surface The space inside the tube allows gas to circulate to maintain the flow area of the gas in the annular gas permeable membrane 710b, thereby increasing the rate of gas diffusion to shorten the sampling time.

In this embodiment, the support member 720b may be, for example, a copper tube, a SUS304 stainless steel tube, or a SUS316 stainless steel tube. In addition, the support member 720b may also be made of an etch-resistant material, such as a titanium tube, a duplex tube, or a tube of nickel-chromium or nickel-chromium-molybdenum alloy.

According to the water-soluble gas sampling assembly of the above embodiment, by providing a support member and a support ball in the annular gas permeable membrane, the support ball is fixed through the support member, so that the support balls can be arranged in a laminated manner in the annular gas permeable membrane to support the annular ventilation. Membrane, and maintaining the diameter of the annular gas permeable membrane larger than the diameter of the sampling tube, thereby increasing the contact area of the annular gas permeable membrane with the fluid, and increasing the flow area of the gas in the accommodating space, thereby helping to increase the rate of water-soluble gas collection, thereby shortening The time of sampling. In addition, the speed of gas permeation can be further increased by supporting the spacing of the support balls.

Moreover, by arranging the water-soluble gas sampling assembly in the first chamber, the water-soluble gas sampling assembly can be prevented from being directly exposed to the water well. Thereby, during the process of ascending or descending the fluid sampling device, the water-soluble gas sampling component is not contaminated by the well water of other depths, and thus the gas sample with higher reliability can be obtained.

Furthermore, by using a pressure valve as an actuating element of the fluid sampling device, on the one hand, a critical operating pressure of a relative depth can be set for the pressure valve for different sampling depth requirements, to take fluid samples of different depths in the well, and to avoid collection. The sample is contaminated by fluids at different depths. On the other hand, the fluid sampling device utilizes the pressure of the fluid in the well to naturally open the pressure valve under the well without the need of an additional drive motor or an additional pressure source to drive the overall device volume. Thereby, the fluid sampling device can be applied to an area that is difficult to reach by large vehicles such as mountains or river valleys, and reaches a wider range of applications.

Additionally, the first housing, the second housing, and the third housing of the fluid sampling device are detachably assembled into a tubular sampling device. Thereby, after the sampling is completed, the chambers in the respective housings can be sealed with the valve members to ensure that the samples in the respective housings are saved, and then the housing is disassembled, which is helpful for the water-soluble gas sampling assembly and the taking. The replacement of the liquid bottle can speed up the sampling of fluids at various depths, and facilitates the sample management of the water-soluble gas sampling component and the liquid sampling bottle. In addition, since the water-soluble gas sampling component is disposed in the first chamber of the first casing, it is suspended into the water well for a period of time, so that after the first chamber is filled with the well water, the water-soluble gas is stored in the sampling pipe, and then Pulling the fluid sampling device to change the pressure value of the depth at which it is located, so that the pressure valve is closed. When the sampling device is pulled to the surface, the first housing is removed, and the sampling tube is placed on one side of the end plug and the sealing ring. The interface is sealed to separate the sampling tube and the sealing ring from the water-soluble gas sampling assembly, and then the sampling tube is reamed to perform water-soluble gas analysis. At the same time, the fluid sampling device can replace another water-soluble gas sampling component for the next set of sampling work, thereby saving the sampling time cost.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

1‧‧‧Fluid sampling device

10‧‧‧First housing

100‧‧‧ first chamber

110‧‧‧ first entrance

20‧‧‧ second housing

200‧‧‧Second chamber

210‧‧‧second entrance

220‧‧‧second exit

30‧‧‧ third housing

300‧‧‧ third chamber

310‧‧‧ third entrance

320‧‧‧ third exit

40‧‧‧pipe

410‧‧‧First port

420‧‧‧second port

430‧‧‧ flow path

50‧‧‧liquid bottle

500‧‧‧Liquid space

60‧‧‧pressure valve

70, 70b‧‧‧Water soluble gas sampling assembly

710, 710b‧‧‧ ring gas permeable membrane

711‧‧‧ accommodating space

720, 720b‧‧‧ support

721‧‧‧Supervisor

722‧‧‧Support tubule

730‧‧‧Support ball

740‧‧‧Sampling tube

741‧‧‧ gas storage space

742‧‧‧End plug

750‧‧‧Seal ring

760‧‧‧Bundle

91‧‧‧ rings

92‧‧‧Heading components

93‧‧‧Filter

94‧‧‧First valve set

941‧‧‧First check valve

942‧‧‧First ball valve

95‧‧‧Second valve set

951‧‧‧Second check valve

952‧‧‧Second ball valve

96‧‧‧third ball valve

97‧‧‧fourth ball valve

98‧‧‧ fifth ball valve

99‧‧‧ pressure gauge

D1‧‧‧ diameter of the sampling tube

D2‧‧‧diameter of the sealing ring

D3‧‧‧diameter of annular gas permeable membrane

1 is a schematic view showing the structure of a fluid sampling device according to a first embodiment of the present invention. 2 is an enlarged schematic view of the water-soluble gas sampling assembly of FIG. 1. 3 is a cross-sectional view of the annular gas permeable membrane of FIG. 2 taken along line A-A. 4 is a schematic structural view of a water-soluble gas sampling assembly according to a second embodiment of the present invention. Figure 5 is a cross-sectional view of the annular gas permeable membrane of Figure 4 taken along line B-B.

Claims (18)

A water-soluble gas sampling assembly comprising: an annular gas permeable membrane having an accommodating space; a support member disposed in the accommodating space, the support member separating the accommodating space from the connected plurality of sub-spaces; Balls are respectively disposed in the sub-spaces; a sampling tube has a gas storage space, the gas storage space is connected to the accommodating space; a sealing ring is located at one end of the accommodating space; and a bundle ring The annular gas permeable membrane is disposed on the annular gas permeable membrane and corresponds to the sealing ring, and the bundle ring is used for the annular gas permeable membrane and the sealing ring to be sleeved on the sampling tube. The water-soluble gas sampling assembly of claim 1, wherein the support balls are glass beads, steel beads or plastic beads. The water-soluble gas sampling assembly of claim 1, wherein the support member is a porous tube, comprising a main body and a plurality of supporting thin tubes extending outward from the main body to accommodate the volume The space is separated by the subspaces, and the support balls are disposed in the subspaces between the support tubes. The water-soluble gas sampling assembly of claim 1, wherein a ratio of a diameter of the sampling tube to a diameter of the annular gas permeable membrane is less than 0.5. A water-soluble gas sampling assembly comprising: a ring-shaped gas permeable membrane having an accommodating space; a support member disposed in the accommodating space; a sampling tube having a gas storage space, the gas storage space connecting the accommodating space a sealing ring located at one end of the accommodating space; and a bundle of rings disposed on the annular permeable membrane and corresponding to the sealing ring, the ferrule for locating the annular permeable membrane and the sealing ring In the sampling tube. The water-soluble gas sampling assembly according to claim 1 or 5, wherein the annular gas permeable membrane is a multi-porous rubber hose. The water-soluble gas sampling assembly according to claim 6, wherein the porous rubber tube is made of natural rubber, fluorocarbon rubber, ruthenium rubber, butadiene rubber, butyl rubber or dimethyl silicone. The water-soluble gas sampling assembly according to claim 1 or 5, wherein the sealing ring is a Teflon ring, a nylon ring or a rubber ring. For example, the water-soluble gas sampling component described in claim 1 or 5, wherein the sampling tube is a copper tube, a SUS304 stainless steel tube, a SUS316 stainless steel tube or an acid-resistant tube. The water-soluble gas sampling component according to claim 1 or 5, wherein the corrosion-resistant pipe material is a titanium pipe, a duplex steel pipe or a nickel-chromium or nickel-chromium-molybdenum alloy pipe. The water-soluble gas sampling assembly of claim 1 or 5, wherein an end of the sampling tube away from the annular gas permeable membrane is sealed in an end plug, welded or pressure-tight manner. The water-soluble gas sampling assembly according to claim 1 or 5, further comprising a first casing having a first chamber therein, the first chamber having a sealed state and an open state. The water-soluble gas sampling assembly of claim 12, wherein the first chamber further comprises at least one water-soluble gas sampling assembly. The water-soluble gas sampling assembly of claim 5, wherein the support member is a porous tube. The water-soluble gas sampling assembly according to claim 14, wherein the porous tube is a copper tube, a SUS304 stainless steel tube or a SUS316 stainless steel tube or an acid-resistant tube. The water-soluble gas sampling assembly of claim 13, further comprising a first valve member, a second casing, a pipeline, a filter member and a pressure valve, wherein the first casing further has a connection a first inlet of the first chamber, wherein the first valve member is disposed at the first inlet, the second housing is disposed at a side of the first housing, and the second housing has a second chamber, a second inlet and an outlet, the second inlet and the outlet communicate with the second chamber, the outlet communicates with the first inlet, the pipeline is disposed in the second chamber, the pipeline has a first port And a second port, the first port is connected to the outlet, the second port is connected to the second inlet, the filter is disposed at the second port, the pressure valve is disposed on the pipeline and is located at the filter and the first Between a valve member. The water-soluble gas sampling assembly of claim 16, further comprising a liquid take-off bottle, wherein the pipeline has a first-class channel, the first port and the second port are connected to the flow channel, and the liquid take-up bottle is located In the second chamber, the liquid take-up bottle has a liquid storage space, the liquid take-up bottle is connected to the pipeline and the liquid storage space is connected to the flow channel, and the liquid take-up bottle is located between the pressure valve and the first valve member . The water-soluble gas sampling assembly of claim 17, further comprising a weighting element disposed in the first housing.