TWI687667B - 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 assembly

The invention relates to a water-soluble gas sampling component, in particular to a water-soluble gas sampling component which enlarges the contact area between the gas-permeable membrane and the sampling fluid.

In order to study the fluid properties in the formation, the surface is usually drilled and sampled through the downhole sampling device. After the sampling device has completed sampling, the researchers analyze the sample to obtain information such as the pressure, temperature, ion concentration, and composition of the fluid.

In general, downhole fluid sampling devices can collect liquids and gases in the formation. Among them, the collection of water-soluble gas generally uses a diffusion gas sampling tube, which is covered with a breathable membrane at the mouth of the sampling tube, so that the gas in the water penetrates the breathable membrane and enters the sampling tube. The conventional diffusion gas sampling tube is an open sampling device, that is, the sampling tube and the breathable membrane are directly exposed to the sampling environment. Therefore, when the sampling device is placed at a predetermined collection depth or when the sampling device is pulled back to the surface, 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. However, accurate analysis data cannot be obtained. In addition, the conventional diffusion-type gas sampling tube has a small contact area between the gas-permeable membrane and the well water, which makes the gas sampling speed slow, resulting in an increase in working time costs.

The present invention is to provide a water-soluble gas sampling assembly, so as to solve the problem that the gas sample sampling in the prior art is time-consuming and susceptible to contamination.

The water-soluble gas sampling assembly disclosed in an embodiment of the present invention includes an annular gas-permeable membrane, a supporting member, a plurality of supporting balls, a sampling tube, a sealing ring, and a bunch of rings. The annular air-permeable membrane has an accommodating space. The supporting member is disposed in the accommodating space, and the supporting member separates the accommodating space into a plurality of connected sub-spaces. The support balls are respectively arranged in the subspaces. The sampling tube has a gas storage space, and the gas storage space communicates with the accommodating space. The sealing ring is located at one end of the accommodating space. The beam ring is sleeved on the annular air-permeable membrane and corresponds to the sealing ring. The beam ring is used to sleeve the annular gas permeable membrane and the sealing ring on the sampling tube.

The water-soluble gas sampling assembly disclosed in another embodiment of the present invention includes an annular gas-permeable membrane, a support, a sampling tube, a sealing ring, and a bunch of rings. The annular air-permeable membrane has an accommodating space. The support is arranged in the accommodating space. The sampling tube has a gas storage space, and the gas storage space communicates with the accommodating space. The sealing ring is located at one end of the accommodating space. The beam ring is sleeved on the annular air-permeable membrane and corresponds to the sealing ring. The beam ring is used to sleeve the annular gas permeable membrane and the sealing ring on 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 layered manner in the annular gas-permeable membrane to support The annular air-permeable membrane keeps the diameter of the annular air-permeable membrane larger than the diameter of the sampling tube, thereby increasing the contact area between the annular air-permeable membrane and the fluid, and increasing the gas circulation area in the accommodating space, which helps to increase the rate of water-soluble gas collection. To shorten the sampling time. In addition, by supporting the distance between the supporting balls, the gas penetration speed can be further increased.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principles of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The following describes in detail the detailed features and advantages of the embodiments of the present invention in the embodiments. The content is sufficient for anyone with ordinary knowledge in the art to understand and implement the technical contents of the embodiments of the present invention, and according to the disclosure of this specification The contents, patent application scope and drawings can be easily understood by anyone with ordinary knowledge in the art to understand the purpose and advantages of the present invention. The following examples further illustrate the views of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIGS. 1 to 3. FIG. 1 is a schematic structural diagram of a fluid sampling device according to a first embodiment of the present invention, FIG. 2 is an enlarged schematic diagram of the water-soluble gas sampling assembly of FIG. 1, and FIG. 3 is a ring shape of FIG. 2 A schematic cross-sectional view of the breathable membrane along the AA section line.

The fluid sampling device 1 of this embodiment includes a first casing 10, a second casing 20, a third casing 30, a lifting ring 91, a weighting element 92, a pipeline 40, a filter element 93, a The liquid taking 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.

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 the side of the first housing 10. 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通信第二室200。 Communicating the second chamber 200. The second outlet 220 of the second housing 20 communicates with the first inlet 110 of the first housing 10.

The third casing 30 is disposed on the side of the second casing 20 opposite to the first casing 10. The third casing 30 has a third chamber 300, a third inlet 310 and a third outlet 320, and the 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 hanging ring 91 is installed on a side of the third casing 30 opposite to the second casing 20 for passing a cable (not shown). In this embodiment, the fluid sampling device 1 is hanged through a cable to enter a water well to perform well water and gas sampling work.

The weighting element 92 is installed on the side of the first housing 10 opposite to the second housing 20, thereby increasing the overall weight of the fluid sampling device 1 to prevent the fluid sampling device 1 from being penetrated by the buoyancy of the fluid in the well and the upwelling of the fluid well. The feature of the weighting element in this embodiment is not intended to limit the present invention. In other embodiments, the fluid sampling device may select whether to provide the weighting element according to actual needs. In addition, the position of the weighting element in this embodiment is not intended 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 pipeline 40 passes through the third outlet 320 and the second inlet 210 and penetrates the second chamber 200 and the third chamber 300. The pipeline 40 has a flow path 430 and a first port 410 and a second port 420 at opposite ends of the flow path 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 through the third inlet 310 and be transferred to the first chamber 100 and the liquid extraction bottle 50 through the pipeline 40.

The filter element 93 is disposed at the first port 410 of the pipeline 40 to filter suspended substances in the fluid in the well to avoid the problem of fluid leakage caused by the suspended substances caught in the valve element.

The liquid extraction bottle 50 is located in the second chamber 200 and has a liquid storage space 500. The liquid extraction bottle 50 is connected to the pipeline 40 and the liquid storage space 500 communicates with the flow channel 430 to collect well water in the flow channel 430 from the liquid storage space 500. In this embodiment, the liquid extraction bottle 50 is a high-pressure liquid extraction bottle, which can collect high-pressure liquid deep downhole and maintain the pressure in the bottle to obtain well water samples in an undecompressed state, which is beneficial to improve the accuracy of sampling analysis data and Reliability. However, the present invention is not limited to this. In other embodiments, the fluid sampling device may use liquid taking bottles with different degrees of pressure resistance according to actual needs.

The pressure valve 60 is located in the third chamber 300 and is disposed on the pipeline 40. The pressure valve 60 is located at the outlet of the filter 93 and away from the end of the third inlet 310, so that the well water can flow through the filter 93 first, so as to prevent the suspended matter in the well water from directly flowing into the pressure valve 60, which prevents the pressure valve 60 from closing. There is a problem with fluid leakage. In this embodiment, the pressure valve 60 is an adjustable pressure valve. By setting different pressures on the adjustable pressure valve, fluid samples at different depths downhole can be taken. In detail, for the needs of different sampling depths, the relative depth of the critical actuating pressure value can be set for the adjustable pressure valve before sampling. When the fluid sampling device 1 reaches a predetermined depth, the water pressure will exceed the preset value of the adjustable pressure valve The critical actuation pressure value, and the valve of the adjustable pressure valve is opened to perform sampling of the fluid at this depth. After the sampling is completed, the fluid sampling device 1 will be pulled back to the ground. During the ascent, when the water pressure around the fluid sampling device 1 is less than the critical actuating pressure value preset by the adjustable pressure valve, the adjustable pressure The valve of the valve will be closed, so that fluid samples from other depths can be avoided.

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

The second valve element group 95 is disposed between the liquid taking bottle 50 and the pipeline 40, so that the liquid storage space 500 has a blocked state and a connected state. In detail, in the present embodiment, the second valve element group 95 includes a second one-way valve 951 and a second ball valve 952 disposed adjacent to each other. The second one-way valve 951 allows the well water to flow in one direction from the flow channel 430 toward the liquid storage space 500, so as 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, so that the liquid storage space 500 is in a blocked state or a connected state. When the fluid sampling device 1 is sampling, the second ball valve 952 opens the flow channel 430 to make the liquid storage space 500 in a connected state to collect well water. After 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 blocked 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 the gas dissolved in the well water of the first chamber 100. As shown in FIGS. 2 and 3, each water-soluble gas sampling assembly 70 includes an annular gas permeable membrane 710, a support 720, a plurality of support balls 730, two sampling tubes 740, two sealing rings 750, and two beam rings 760 .

The annular air-permeable membrane 710 has an accommodating space 711. The annular gas permeable membrane 710 can allow the 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 silicone rubber tube made of natural rubber (Natural Rubber, NR), fluorosilicone rubber (FVMQ or Fluorinated Silicone Rubber, FLS), silicone rubber (SI or Silicone Rubber, VMQ), Nitrile Rubber (NBR), Butyl Rubber (BR) or Dimethy Silicone Rubber (DSR), but not limited to this.

The supporting 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 pass through The ring-shaped air-permeable membrane 710 enters the accommodating space 711. In this embodiment, the support member 720 is a porous tube, including a main pipe body 721 and a plurality of supporting thin tubes 722. The supporting thin tube 722 extends outward from the main body 721 to divide the accommodating space 711 into a plurality of sub-spaces.

The supporting balls 730 may be, for example, glass beads, steel balls, or plastic beads, which are respectively disposed in the subspaces between the main body 721 and the supporting thin tube 722 to further provide support to the annular breathable membrane 710, thereby maintaining the accommodation of the annular breathable membrane 710 Space 711. In this embodiment, the support balls 730 are fixed through the support 720 so that the support balls 730 can be arranged in a layered manner to support the annular gas permeable membrane 710, thereby increasing the contact area of the annular gas permeable membrane 710 with the fluid, which helps to promote 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, they can have a larger gap than the support members of other shapes, so that a larger flow area can be formed in the accommodating 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 both ends of the accommodating space 711, and the two bundle rings 760 are sleeved on the annular gas permeable membrane 710 and correspond to the positions of the two sealing rings 750, respectively. The inner diameter of the sealing ring 750 is greater than the outer diameter of the sampling tube 740, and the sampling tube 740 is penetrated by 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 ring 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 sealing ring 750, and the sampling tube 740.

In this embodiment, the end of each sampling tube 740 away from the annular gas permeable membrane 710 is sealed with an end plug 742, and the end plug 742 may be, for example, a metal seal joint, but the invention is not limited thereto. In other embodiments, the end of the sampling tube away from the annular gas-permeable membrane may be sealed by welding or compression, for example. In addition, the end plug type of this embodiment is not intended to limit the present invention. In other embodiments, the sampling tube may use different types of end plugs according to actual needs.

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

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

As shown in FIG. 2, in this 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. In this way, 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 this embodiment, the number of the water-soluble gas sampling components 70 is three, but the invention is not limited thereto. In other embodiments, the fluid sampling device may be provided with other numbers of water-soluble gas sampling components in the first chamber according to actual needs.

In this embodiment, the pipeline 40 has a shunt structure in the second chamber 200 to shunt the fluid to the liquid extraction bottle 50 and the first chamber 100, but the invention is not limited thereto. In other embodiments, the pipeline may not have a shunt structure and directly connect the third inlet and the liquid extraction bottle. For example, a second pipeline may be used to connect the liquid extraction bottle and the first chamber, so that the well water flowing in from the third inlet first Enter the liquid extraction bottle, and then flow into the first chamber through the second pipeline.

In this embodiment, the fluid sampling device 1 may further include 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 on the liquid extraction bottle, and the fifth ball valve 98 is disposed between the diverting structure and the first valve group 94. In this embodiment, the third ball valve 96 and the fifth ball valve 98 are used in conjunction with the first ball valve 942 and the second ball valve 952 to respectively block the flow path 430 of the pipeline 40 to make the first chamber 100 and the second chamber 200 The third chamber 300 is 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 used to connect a pressure gauge 99 for interpretation of the cavity pressure after the fluid sampling device 1 has finished sampling and pulled back to the ground.

In detail, in this embodiment, the first casing 10, the second casing 20, and the third casing 30 of the fluid sampling device 1 are detachably assembled into a tubular sampling device. In this way, after the sampling is completed, the chambers in each casing can be sealed with each valve to ensure the preservation of the samples in each casing, and then the disassembly of the casing can be performed to help the water-soluble gas sampling assembly 70 and The replacement of the liquid sampling bottle 50 can speed up the sampling speed of fluids at various depths, and is beneficial to the sample management of the water-soluble gas sampling assembly 70 and the liquid sampling bottle 50.

In addition, since the water-soluble gas sampling assembly 70 is disposed in the first chamber 100 of the first housing 10, it is suspended into the water well for a period of time, so that after the first chamber 100 is filled with well water, the sampling tube 740 will be stored If there is water-soluble gas, pull the fluid sampling device 1 to change the pressure value at its depth, so that the pressure valve 60 is closed. When the sampling device 1 is pulled to the surface, the first housing 10 is removed, and the sampling tube is removed. 740 seals the interface between the end plug 742 and the sealing ring 750 to separate the sampling tube 740 and the sealing ring 750 from the water-soluble gas sampling assembly 70, and then expands the hole of the sampling tube 740 for water-soluble gas analysis. At the same time, the fluid sampling device 1 can replace another water-soluble gas sampling assembly 70 to perform the sampling work of the next group, so as to save the cost of sampling time.

In addition, 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. In this way, during the ascent or descent of the fluid sampling device 1, the water-soluble gas sampling assembly 70 will not be contaminated by well water at other depths, and thus a highly reliable gas sample can be obtained.

However, the feature that the fluid sampling device of this embodiment includes three housings is not intended to limit the present invention. In other embodiments, the fluid sampling device may include two housings according to actual needs, for example, the liquid sampling bottle and the pressure The valve is arranged in the same casing, and the water-soluble gas sampling assembly is arranged in another casing.

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

The fluid sampling device of this embodiment is similar to the fluid sampling device 1 of the first embodiment, the difference is that the water-soluble gas sampling assembly 70b of this embodiment is not provided with a supporting ball, and the supporting member 720b of this embodiment is a porous tube . On the one hand, the porous tube can support the annular gas permeable membrane 710b through the pipe wall, so that the annular gas permeable membrane 710b will not collapse due to the pressure of the well water, so as to maintain the contact area of the annular gas permeable membrane 710b and the well water; on the other hand, the porous The space in 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 supporting 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 acid-resistant material, such as a titanium tube, a dual-phase steel tube, or a tube of nickel-chromium, 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 air-permeable membrane, the support ball is fixed through the support member, so that the support balls can be arranged in a layered manner in the annular air-permeable membrane to support the annular air-permeable Membrane, and maintain 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 and the fluid, and increasing the gas circulation area in the accommodating space, helping to increase the rate of water-soluble gas collection to shorten Sampling time. In addition, by supporting the distance between the supporting balls, the gas penetration speed can be further increased.

Moreover, by disposing the water-soluble gas sampling component in the first chamber, the water-soluble gas sampling component can be prevented from being directly exposed to the water well. In this way, during the ascent or descent of the fluid sampling device, the water-soluble gas sampling assembly will not be contaminated by well water at other depths, thereby obtaining a highly reliable gas sample.

Furthermore, by using the pressure valve as the actuating element of the fluid sampling device, on the one hand, the critical actuating pressure of the relative depth can be set for the pressure valve according to the needs of different sampling depths, so as to take fluid samples at different depths in the well, and can also avoid collection Fluids of different depths contaminate the sample. On the other hand, the fluid sampling device uses the pressure of the fluid in the well to naturally open the pressure valve under the pressure of the well, without the need for an additional drive motor or an additional pressure source, which can simplify the overall equipment volume. In this way, the fluid sampling device can be applied to areas that are difficult for large vehicles such as deep mountains or river valleys to reach, and a wider range of applications is achieved.

In addition, the first casing, the second casing and the third casing of the fluid sampling device are detachably assembled into a tubular sampling device. In this way, after the sampling is completed, the chambers in each housing can be sealed with each valve to ensure the preservation of the samples in each housing, and then the disassembly of the housing can be performed, which is helpful for the water-soluble gas sampling assembly and The replacement of the liquid bottle can speed up the sampling speed of fluids at various depths, and is conducive to the sub-sample management of the water-soluble gas sampling component and the liquid sampling bottle. In addition, since the water-soluble gas sampling component is arranged in the first chamber of the first housing, it is suspended and enters the well for a period of time, so that after the first chamber is filled with well water, there will be water-soluble gas in the sampling tube. Pull the fluid sampling device to change the pressure value at its depth, so that the pressure valve is closed. When the sampling device is pulled to the surface, the first shell is removed, and the sampling tube is placed on the side of the end plug and the sealing ring Seal at the interface to separate the sampling tube and sealing ring from the water-soluble gas sampling component, and then expand the hole in the sampling tube seal for water-soluble gas analysis. At the same time, the fluid sampling device can replace another water-soluble gas sampling component to perform the sampling work of the next group, so as to achieve the purpose of saving sampling time and cost.

Although the present invention is disclosed as the above preferred embodiments, it is not intended to limit the present invention. Any person familiar with similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection for inventions shall be subject to the scope defined in the patent application scope attached to this specification.

1‧‧‧ Fluid sampling device 10‧‧‧ First housing 100‧‧‧ First chamber 110‧‧‧ First inlet 20‧‧‧ Second housing 200‧‧‧ Second chamber 210‧‧‧ Second inlet 220‧‧‧ Second outlet 30‧‧‧ Third shell 300‧‧‧ Third chamber 310‧‧‧ Third inlet 320‧‧‧ Third outlet 40‧‧‧ Piping 410‧‧‧ First port 420‧‧‧ Second port 430‧‧‧Flow channel 50‧‧‧Liquid bottle 500‧‧‧Liquid storage space 60‧‧‧Pressure valve 70, 70b‧‧‧Water soluble gas sampling assembly 710, 710b‧ ‧‧Annular breathable membrane 711‧‧‧Accommodation space 720, 720b ‧‧‧ Support 721‧‧‧Main body 722‧‧‧Support thin tube 730‧‧‧Support ball 740‧‧‧Sampling tube 741‧‧‧ Space 742‧‧‧End plug 750‧‧‧Sealing ring 760‧‧‧Bundle ring 91‧‧‧Hanging ring 92‧‧‧Heavy element 93‧‧‧Filter element 94‧‧‧First valve group 941‧‧‧ One check valve 942‧‧‧First ball valve 95‧‧‧Second valve piece 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 sampling tube D2‧diameter of sealing ring D3‧‧‧diameter of annular breathable membrane

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

70‧‧‧Water soluble gas sampling module

710‧‧‧Annular breathable membrane

711‧‧‧accommodating space

720‧‧‧Support

721‧‧‧ competent body

722‧‧‧Support thin tube

730‧‧‧support ball

740‧‧‧Sampling tube

741‧‧‧Gas storage space

742‧‧‧End plug

750‧‧‧Seal ring

760‧‧‧Girdle

D1‧‧‧Diameter of sampling tube

D2‧‧‧Diameter of sealing ring

D3‧‧‧Diameter of annular breathable membrane

Claims (13)

A water-soluble gas sampling component, comprising: an annular gas-permeable membrane with an accommodating space; a support member arranged in the accommodating space, the support member separating the accommodating space into a plurality of connected sub-spaces; a plurality of supports The balls are respectively arranged in the subspaces; a sampling tube has a gas storage space, and the gas storage space communicates with the accommodating space; a sealing ring is located at one end of the accommodating space; and a bunch of rings , Sleeved on the annular gas-permeable membrane and corresponding to the sealing ring, the beam ring is used to sleeve the annular gas-permeable membrane and the sealing ring on the sampling tube. The water-soluble gas sampling component as described in item 1 of the patent application scope, wherein the support balls are glass beads, steel beads or plastic beads. The water-soluble gas sampling assembly as described in item 1 of the patent application scope, wherein the support member is a porous tube, including a main pipe body and a plurality of support thin tubes, the support thin tubes extending outward from the main pipe body The mounting space separates the sub-spaces, and the supporting balls are disposed in the sub-spaces between the supporting thin tubes. The water-soluble gas sampling assembly as described in item 1 of the patent application scope, wherein the ratio of the diameter of the sampling tube to the 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 with an accommodating space; a support member arranged in the accommodating space, the support member is a porous tube; a sampling tube with a gas storage space, The gas storage space communicates with the accommodating space; A sealing ring located at one end of the accommodating space; and a bunch of rings sleeved on the annular gas permeable membrane and corresponding to the sealing ring, the bunched ring is used to sleeve the annular gas permeable membrane and the sealing ring on the The sampling tube. The water-soluble gas sampling assembly as described in item 1 or 5 of the patent application scope, wherein the sampling tube is a copper tube, a SUS304 stainless steel tube, a SUS316 stainless steel tube, or an acid corrosion-resistant tube, and the acid corrosion-resistant tube is a titanium tube, Double-phase steel pipe or nickel-chromium, nickel-chromium-molybdenum alloy pipe. The water-soluble gas sampling assembly as described in item 1 or 5 of the patent application scope, wherein the end of the sampling tube away from the annular gas-permeable membrane is sealed by end plug, welding or compression. The water-soluble gas sampling assembly as described in item 1 or 5 of the patent application scope further includes a first housing, the inside of which is a first chamber, which has a closed state and an open state. The water-soluble gas sampling component as described in item 8 of the patent application range, wherein the first chamber further includes at least one water-soluble gas sampling component. The water-soluble gas sampling component as described in item 5 of the patent application scope, 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 as described in item 9 of the patent application scope further includes a first valve member, a second housing, a pipeline, a filter member and a pressure valve, and the first housing is further connected to the 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, 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 one A second port, the first port communicates with the outlet, the second port communicates with the second inlet, the filter is disposed on the second port, the pressure valve is disposed on the pipeline and is located between the filter and the first valve Between pieces. The water-soluble gas sampling assembly as described in item 11 of the patent application scope further includes a liquid extraction bottle, wherein the pipeline has a first-rate channel, the first port and the second port communicate with the flow channel, and the liquid extraction bottle is located at the In the second chamber, the liquid extraction bottle has a liquid storage space, the liquid extraction bottle is connected to the pipeline and the liquid storage space communicates with the flow path, the liquid extraction bottle is located between the pressure valve and the first valve member . The water-soluble gas sampling assembly described in item 12 of the patent application scope further includes a weighting element, which is disposed in the first housing.

Images