Gas sample bag and gas autosampler system

Abstract

The present disclosure provides a gas sample sampling bag and a gas automatic sampling system. The gas sample sampling bag comprises an external pressurized gas bag and an internal sampling gas bag. The external pressurized gas bag is used to contain pressure medium gas and is provided with a first gas inlet and a first gas outlet. The internal sampling gas bag is arranged in the external pressurized gas bag. The internal sampling gas bag is used to contain sampling gas and is provided with a second gas inlet and a second gas outlet. One end of the second gas inlet and the second gas outlet is connected to the internal sampling gas bag, and the other end extends out of the external pressurized gas bag. Through the above structure design, when the present disclosure is applied to gas sampling, the precise control of the gas sampling pressure can be realized through each gas inlet and each gas outlet, and whether the gas sample storage leaks can be warned. When the sample gas is analyzed, the repeatability of the sampling of different operators can be ensured.

Description

Technical Field

[0001] This disclosure relates to the field of gas analysis technology, and in particular to a gas sample sampling bag and an automatic gas injection system. Background Technology

[0002] Gas sample collection bags are commonly used tools for gas sample collection in the field of gas analysis. However, common single-layer gas sample collection bags are susceptible to many human factors during use, making it difficult to achieve a standardized sampling process. Furthermore, the gas sample introduction status is closely related to the operator's skill level when the gas sample collection bag is connected to the analytical instrument.

[0003] Automatic gas sampling equipment has already achieved a certain level of popularity. However, when existing single-layer gas bags are used in conjunction with automatic gas sampling equipment, they often employ a pump to draw gas samples from the gas bag. If problems such as gas bag leakage or improper sealing between the gas bag interface and the automatic gas sampling equipment occur, the automatic gas sampling equipment may draw ambient air into the sample introduction device of the analyzer, resulting in inaccurate analysis results. Summary of the Invention

[0004] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art and to provide a gas sample bag that can standardize the gas sampling process and stably inject gas when used with an automatic gas injection device.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solution: According to one aspect of this disclosure, a gas sample sampling bag is provided, comprising an external pressurized gas bag and an internal sampling gas bag; the external pressurized gas bag is used to contain a pressurized medium gas and is provided with a first inlet and a first outlet; the internal sampling gas bag is disposed inside the external pressurized gas bag, the internal sampling gas bag is used to contain the sampling gas and is provided with a second inlet and a second outlet, one end of each of the second inlet and the second outlet is connected to the internal sampling gas bag, and the other end of each extends out of the external pressurized gas bag.

[0006] According to one embodiment of this disclosure, along a first direction, the two ends of the external pressurized air bag are respectively fixedly connected to the two ends of the internal sampling air bag; along a second direction perpendicular to the first direction, the width of the external pressurized air bag is greater than that of the internal sampling air bag.

[0007] According to one embodiment of this disclosure, the end of the external pressurized gas bag and the end of the internal sampling gas bag are fixed together as an integral structure by heat pressing, and a heat-pressed seal is formed at the end of the gas sample sampling bag; wherein, the first air inlet, the first air outlet, the second air inlet and the second air outlet are respectively partially connected to the heat-pressed seal and extend out from the heat-pressed seal.

[0008] According to one embodiment of this disclosure, the first air inlet and the first air outlet are respectively located in the regions of the external pressurized air bag located on both sides of the internal sampling air bag in the second direction.

[0009] According to one embodiment of this disclosure, the first air inlet and the first air outlet are respectively located at the same end of the gas sample sampling bag in the first direction, and the second air inlet and the second air outlet are respectively located at the same other end of the gas sample sampling bag in the first direction.

[0010] According to one embodiment of this disclosure, the external pressurized air bag is made of a transparent or semi-transparent material, and the internal sampling air bag is made of a transparent or semi-transparent material.

[0011] According to one embodiment of this disclosure, the external pressurized air bag is made of a semi-transparent material; wherein: the internal sampling air bag is made of a semi-transparent material and is a different color from the external pressurized air bag; or, the internal sampling air bag is made of an opaque material.

[0012] According to one embodiment of this disclosure, the first air inlet is provided with a shut-off valve; and / or, the first air outlet is provided with a shut-off valve.

[0013] According to one embodiment of this disclosure, the second air inlet is provided with a shut-off valve; and / or, the second air outlet is provided with a shut-off valve.

[0014] Another major objective of this disclosure is to overcome at least one of the defects of the prior art described above and to provide an automatic gas sampling system using the gas sample sampling bag described above.

[0015] To achieve the above objectives, the present disclosure adopts the following technical solution: According to another aspect of this disclosure, an automatic gas sampling system is provided, which includes the gas sample sampling bag proposed in this disclosure and described in the above embodiments.

[0016] As can be seen from the above technical solution, the advantages and positive effects of the gas sample sampling bag and automatic gas injection system proposed in this disclosure are as follows: The gas sample collection bag disclosed herein includes an external pressurized gas bag and an internal sampling gas bag. The external pressurized gas bag contains the pressurized medium gas and is provided with a first inlet and a first outlet. The internal sampling gas bag is disposed inside the external pressurized gas bag, contains the sampling gas, and is provided with a second inlet and a second outlet. One end of each of the second inlet and the second outlet is connected to the internal sampling gas bag, and the other end extends out of the external pressurized gas bag. Through the above structural design, when applied to gas sampling, this disclosure can achieve precise control of the gas sampling pressure through each inlet and outlet, and can provide early warning of potential gas sample leakage. When analyzing the sample gas, repeatability of sample introduction by different operators can be ensured. Attached Figure Description

[0017] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein: Figure 1 This is a schematic diagram of the structure of a gas sample sampling bag according to an exemplary embodiment; Figure 2 This is a side view of a gas sample sampling bag when both the external pressurized gas bag and the internal sampling gas bag are emptied. Figure 3 This is a side view of a gas sample sampling bag with the external pressurized gas bag vented and the internal sampling gas bag pressurized. Figure 4 This is a side view of a gas sample sampling bag with the external pressurized gas bag under pressure and the internal sampling gas bag vented. Figure 5 This is a side view of the gas sample sampling bag when both the external pressurized gas bag and the internal sampling gas bag are pressurized.

[0018] The annotations in the attached figures are explained as follows: 100. External pressurized air bag; 110. First air intake; 120. First air outlet; 200. Internal sampling air bag; 210. Second air intake; 220. Second air outlet; 300. Hot-press edge sealing. Detailed Implementation

[0019] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are illustrative in nature and not intended to limit this disclosure.

[0020] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0021] See Figure 1 The illustration shows a representative structural diagram of the gas sample collection bag proposed in this disclosure. In this exemplary embodiment, the gas sample collection bag proposed in this disclosure is described as an example of its application in gas sampling and analysis processes. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this disclosure to other types of gas sample collection bags, and these changes are still within the scope of the principles of the gas sample collection bag proposed in this disclosure.

[0022] like Figure 1 As shown, in one embodiment of this disclosure, the gas sample sampling bag proposed in this disclosure adopts a double-layer gas bag structure, specifically including an outer pressurized gas bag 100 and an inner sampling gas bag 200. (See also...) Figures 2 to 5 , Figure 2 The image shows a representative side view of the gas sample collection bag when both the external pressurized gas bag 100 and the internal sampling gas bag 200 are emptied. Figure 3 The image shows a side view of a gas sample collection bag with the outer pressurized gas bag 100 vented and the inner sampling gas bag 200 pressurized. Figure 4 The image shows a representative side view of the gas sample sampling bag with the external pressurized gas bag 100 under pressure and the internal sampling gas bag 200 vented. Figure 5The figure shows a representative side view of the gas sample sampling bag when both the external pressurized gas bag 100 and the internal sampling gas bag 200 are pressurized. The structure, connection method, and functional relationship of the main components of the gas sample sampling bag proposed in this disclosure will be described in detail below with reference to the above figures.

[0023] like Figure 1 As shown, in one embodiment of this disclosure, the external pressurized gas bag 100 is used to contain pressurized medium gas, and the external pressurized gas bag 100 is provided with a first air inlet 110 and a first air outlet 120. The internal sampling gas bag 200 is disposed inside the external pressurized gas bag 100, and the internal sampling gas bag 200 is used to contain sampling gas. The volume space of the internal sampling gas bag 200 is not connected to the outer bag, and the volume space of the internal sampling gas bag 200 and the volume space of the external pressurized gas bag 100 are independent structures, and the gas in the internal sampling gas bag 200 will not mix with the gas in the external pressurized gas bag 100. The internal sampling gas bag 200 is provided with a second air inlet 210 and a second air outlet 220. One end of each of the second air inlet 210 and the second air outlet 220 is connected to the internal sampling gas bag 200, and the other end of each of the second air inlet 210 and the second air outlet 220 extends out of the external pressurized gas bag 100. The internal sampling gas bag 200 is a container for collecting sample gas, while the external pressurized gas bag 100, filled with gas at a certain pressure, provides pressure for the sample gas in the internal sampling gas bag 200 to flow outward. Through this structural design, when applied to gas sampling, this disclosure can achieve precise control of the gas sampling pressure through each inlet and outlet, and can provide early warning of potential leaks in the gas sample storage. During sample gas analysis, repeatability of sample introduction by different operators can be ensured.

[0024] like Figure 1 As shown, in one embodiment of this disclosure, along a first direction, the two ends of the outer pressurized air bag 100 are fixedly connected to the two ends of the inner sampling air bag 200, respectively. This first direction can be referred to as direction D1 shown in the accompanying drawings. Along a second direction perpendicular to the first direction, the width of the outer pressurized air bag 100 can be greater than that of the inner sampling air bag 200. This second direction can be referred to as direction D2 shown in the accompanying drawings. It should be understood that the second direction can also be other directions perpendicular to the first direction, such as any direction of the inner sampling air bag 200 in the circumferential direction.

[0025] like Figure 1As shown, in one embodiment of this disclosure, the ends of the external pressurized gas bag 100 and the internal sampling gas bag 200 can be fixed into an integral structure by heat pressing, thereby forming a heat-pressed sealing edge 300 at the end of the gas sample sampling bag. The aforementioned ends can be understood as the ends of each structure in the first direction. Based on this, the first air inlet 110, the first air outlet 120, the second air inlet 210, and the second air outlet 220 are respectively partially connected to the heat-pressed sealing edge 300 and extend from it. Through the above structural design, this disclosure uses heat pressing to fix the external pressurized gas bag 100 and the internal sampling gas bag 200, while simultaneously fixing each valve and preventing relative movement between the valves and the gas sample sampling bag.

[0026] like Figure 1 As shown, in one embodiment of this disclosure, the first air inlet 110 and the first air outlet 120 are respectively located in the regions of the external pressurized gas bag 100 located on both sides of the internal sampling gas bag 200 in the second direction. Through the above structural design, this disclosure can avoid interference between the first air inlet 110, the first air outlet 120 and the internal sampling gas bag 200, further facilitating the fixed connection of each in the gas sample sampling bag (e.g., connection with the heat-sealed edge 300), while also allowing the first air inlet 110 and the first air outlet 120 to be arranged separately to avoid mutual interference, and facilitating the operator's adjustment of the valves.

[0027] like Figure 1 As shown, in one embodiment of this disclosure, the first air inlet 110 and the first air outlet 120 are respectively located at the same end of the gas sample sampling bag in the first direction, and the second air inlet 210 and the second air outlet 220 are respectively located at the other end of the gas sample sampling bag in the first direction. Through the above structural design, this disclosure separates the valves of the external pressurized gas bag 100 from the valves of the internal sampling gas bag 200, facilitating the fixed connection of each valve in the gas sample sampling bag (e.g., connection with the heat-sealed edge 300), avoiding mutual interference between the valves, and facilitating the operator's adjustment of the valves.

[0028] In one embodiment of this disclosure, the external pressurized gas bag 100 can be made of a transparent material, and the internal sampling gas bag 200 can also be made of a transparent material. Through this design, the present disclosure allows the operator to easily observe whether impurities exist in the gas sample through the external pressurized gas bag 100 and the internal sampling gas bag 200, and accordingly select to replace the gas sample, further ensuring the accuracy or safety of subsequent operations. Furthermore, to enable observation of whether the gas sample inside the internal sampling gas bag 200 contains impurities, at least one of the external pressurized gas bag 100 and the internal sampling gas bag 200 can also be made of a semi-transparent material. Furthermore, in some other embodiments of this disclosure, when the external pressurized air bag 100 is made of a transparent or semi-transparent material, the internal sampling air bag 200 may also be made of an opaque material. This facilitates the operator's observation of the expansion and contraction state of the internal sampling air bag 200 through the external pressurized air bag 100. It should be understood that when the external pressurized air bag 100 is made of a transparent material and the internal sampling air bag 200 is made of a semi-transparent material, or when the external pressurized air bag 100 and the internal sampling air bag 200 are made of semi-transparent materials of different colors, it is also possible to observe the expansion and contraction state of the internal sampling air bag 200 through the external pressurized air bag 100.

[0029] In one embodiment of this disclosure, the colors of the first air inlet 110 and the first air outlet 120 may be different from the colors of the second air inlet 210 and the second air outlet 220, so as to facilitate the sampling personnel to distinguish between the external pressurized air bag 100 and the internal sampling air bag 200 during operation.

[0030] In one embodiment of this disclosure, the first air inlet 110 may be equipped with a shut-off valve for shutting off or connecting the first air inlet 110. This shut-off valve may be manually controlled or coupled to the control system of an automatic gas injection system to achieve automatic control, and used in conjunction with the automatic gas injection system. In other embodiments of this disclosure, the first air inlet 110 may also be equipped with other types of on / off valves.

[0031] In one embodiment of this disclosure, the first gas outlet 120 may be equipped with a shut-off valve for shutting off or connecting the first gas outlet 120. This shut-off valve may be manually controlled or coupled to the control system of an automatic gas injection system to achieve automatic control, and used in conjunction with the automatic gas injection system. In other embodiments of this disclosure, the first gas outlet 120 may also be equipped with other types of on / off valves.

[0032] As described above, the external pressurized gas bag 100 is filled with gas at a certain pressure through the first air inlet 110. When the gas is filled and the shut-off valves on both the first air inlet 110 and the first air outlet 120 are closed, the pressure in the external pressurized gas bag 100 can be maintained. The gas in the external pressurized gas bag 100 can be discharged through the first air outlet 120. When the shut-off valves on the first air inlet 110 and the first air outlet 120 are closed, the external pressurized gas bag 100 forms a closed space for holding gas, and this space is not connected to the outside environment or the internal sampling gas bag 200.

[0033] In one embodiment of this disclosure, the second air inlet 210 may be equipped with a shut-off valve for shutting off or connecting the second air inlet 210. This shut-off valve may be manually controlled or coupled to the control system of an automatic gas injection system to achieve automatic control, and used in conjunction with the automatic gas injection system. In other embodiments of this disclosure, the second air inlet 210 may also be equipped with other types of on / off valves.

[0034] In one embodiment of this disclosure, the second outlet 220 may be equipped with a shut-off valve for shutting off or connecting the second outlet 220. This shut-off valve may be manually controlled or coupled to the control system of the automatic sampling system for automatic control, used in conjunction with the automatic gas sampling system. In other embodiments of this disclosure, the second outlet 220 may also be equipped with other types of on / off valves. When the shut-off valves of the second inlet 210 and the second outlet 220 are closed, the internal sampling gas bag 200 forms a closed space for holding gas, and this space is not connected to the outside environment or the external pressurized gas bag 100.

[0035] As described above, the internal sampling gas bag 200 is filled with the sample gas to be collected through the second air inlet 210. Once the gas is filled, the pressure inside the internal sampling gas bag 200 can be maintained by closing both the aforementioned shut-off valves at the outlet and inlet of the internal sampling gas bag 200. The gas in the internal sampling gas bag 200 can be discharged through the second air outlet 220.

[0036] Reference Figures 2 to 5 When collecting gas samples, such as Figure 2 As shown, both the internal sampling gas bag 200 and the external pressurizing gas bag 100 are in an emptied state, meaning they are both deflated. At this time, the shut-off valve connected to the second air inlet 210 can be opened to allow the gas sample to fill the internal sampling gas bag 200, exhibiting... Figure 3The sampling bag is in a pressurized state, while the external pressurized bag 100 is vented. This completes the injection of sample gas. Typically, gas sampling requires purging the gas in the internal sampling bag 200 several times. When purging the gas in the internal sampling bag 200, close the shut-off valves connected to the second inlet 210 and the first outlet 120, and open the shut-off valves connected to the second outlet 220 and the first inlet 110. Then, inject gas at the required pressure into the first inlet 110. At this time, the sample gas in the internal sampling bag 200 is forced out due to the pressure difference between the internal sampling bag 200 and the external pressurized bag 100, thus completing one purging of the sample gas in the internal sampling bag 200. The state of the sampling bag at this time is as follows: Figure 4 As shown. The sampling can be performed several times as needed. Figure 3 and Figure 4 The cycle of states prepares for final sampling. During final sampling, the shut-off valves connected to the first outlet 120 and the second outlet 220 are closed. A certain amount of gas is then introduced through the second inlet 210. The shut-off valve connected to the second inlet 210 is then closed, and gas at a certain pressure is introduced through the first inlet 110. The shut-off valve connected to the first inlet 110 is then closed. At this point, the gas bag exhibits... Figure 5 The state shown.

[0037] During gas sample analysis, the state of the collection bag used to collect the gas sample is as follows: Figure 5 As shown, the second outlet 220 is connected to the gas inlet of the analytical device, and the first inlet 110 and the first outlet 120 are connected to the pressure control pipeline of the automatic gas sampling system. By opening the shut-off valve connected to the second outlet 220, the pressure control of the automatic gas sampling system ensures that the gas in the internal sampling gas bag 200 enters the gas inlet at a stable pressure and flow rate, achieving a stable sampling effect.

[0038] It should be noted that the gas sample collection bags shown in the accompanying drawings and described in this specification are merely a few examples among many types of gas sample collection bags capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the gas sample collection bags shown in the accompanying drawings or described in this specification.

[0039] Based on the detailed description of several exemplary embodiments of the gas sample collection bag proposed in this disclosure above, an exemplary embodiment of the automatic gas sampling system proposed in this disclosure will be described below.

[0040] In one embodiment of this disclosure, the automatic gas sampling system proposed in this disclosure includes the gas sample sampling bag proposed in this disclosure and described in detail in the above embodiments.

[0041] It should be noted that the automated gas sampling systems shown in the accompanying drawings and described in this specification are merely a few examples of many automated gas sampling systems capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the automated gas sampling systems shown in the accompanying drawings or described in this specification.

[0042] In summary, the gas sample collection bag proposed in this disclosure includes an external pressurized gas bag 100 and an internal sampling gas bag 200. The external pressurized gas bag 100 is used to contain pressurized medium gas and is provided with a first inlet 110 and a first outlet 120. The internal sampling gas bag 200 is disposed inside the external pressurized gas bag 100, and is used to contain sampling gas. It is provided with a second inlet 210 and a second outlet 220. One end of each of the second inlet 210 and the second outlet 220 is connected to the internal sampling gas bag 200, and the other end extends out of the external pressurized gas bag 100. Through the above structural design, when applied to gas sampling, this disclosure can achieve precise control of gas sampling pressure through each inlet and outlet, and can provide early warning of gas sample storage leakage. When analyzing sample gas, it can ensure the repeatability of sample injection by different operators.

[0043] The foregoing has described and / or illustrated exemplary embodiments of the gas sample collection bag and automatic gas injection system proposed in this disclosure. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “an,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to those listed. Furthermore, the terms “first” and “second,” etc., in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0044] Although the gas sample collection bag and automatic gas injection system disclosed herein have been described with respect to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. A gas sample sampling bag, characterized in that, It includes an external pressurized gas bag (100) and an internal sampling gas bag (200); the external pressurized gas bag (100) is used to contain pressurized medium gas and is provided with a first air inlet (110) and a first air outlet (120); the internal sampling gas bag (200) is disposed inside the external pressurized gas bag (100), the internal sampling gas bag (200) is used to contain sampling gas and is provided with a second air inlet (210) and a second air outlet (220), one end of each of the second air inlet (210) and the second air outlet (220) is connected to the internal sampling gas bag (200), and the other end of each extends out of the external pressurized gas bag (100).

2. The gas sample sampling bag according to claim 1, characterized in that, Along the first direction, the two ends of the external pressurized air bag (100) are fixedly connected to the two ends of the internal sampling air bag (200); along the second direction perpendicular to the first direction, the width of the external pressurized air bag (100) is greater than that of the internal sampling air bag (200).

3. The gas sample collection bag according to claim 2, characterized in that, The end of the external pressurized gas bag (100) and the end of the internal sampling gas bag (200) are fixed together by heat pressing, and a heat-pressed seal (300) is formed at the end of the gas sample sampling bag; wherein, the first air inlet (110), the first air outlet (120), the second air inlet (210) and the second air outlet (220) are respectively partially connected to the heat-pressed seal (300) and extend out from the heat-pressed seal (300).

4. The gas sample sampling bag according to claim 2, characterized in that... The first air inlet (110) and the first air outlet (120) are respectively located in the areas of the external pressurized air bag (100) on both sides of the internal sampling air bag (200) in the second direction.

5. The gas sample sampling bag according to claim 2, characterized in that, The first air inlet (110) and the first air outlet (120) are respectively located at the same end of the gas sample sampling bag in the first direction, and the second air inlet (210) and the second air outlet (220) are respectively located at the other end of the gas sample sampling bag in the first direction.

6. The gas sample collection bag according to claim 1, characterized in that, The external pressurized air bag (100) is made of transparent or semi-transparent material, and the internal sampling air bag (200) is made of transparent or semi-transparent material.

7. The gas sample collection bag according to claim 1, characterized in that, The external pressurized air bag (100) is made of a semi-transparent material; wherein: The internal sampling air bag (200) is made of a semi-transparent material and is a different color from the external pressurized air bag (100); or The internal sampling air bag (200) is made of opaque material.

8. The gas sample sampling bag according to claim 1, characterized in that: The first air inlet (110) is provided with a shut-off valve; and / or The first air outlet (120) is equipped with a shut-off valve.

9. The gas sample sampling bag according to claim 1, characterized in that: The second air inlet (210) is provided with a shut-off valve; and / or The second air outlet (220) is equipped with a shut-off valve.

10. An automatic gas sampling system, characterized in that, Includes the gas sample collection bag as described in any one of claims 1 to 9.

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