Gas sampling device and sampling method

Abstract

The invention provides a gas sampling device and a sampling method, and relates to the technical field of gas sampling. The sampling device comprises a gas collection assembly provided with a gas collection chamber, a partition body arranged in the gas collection chamber and a drain valve, the gas collection chamber is provided with a gas inlet and a liquid outlet, the gas collection chamber is filled with inert liquid, and the volume of the gas collection chamber is larger than that of gas to be sampled; the partition bodies can divide the gas collection cavity into a plurality of sub-cavities; a gap is formed between the partition body and the inner wall of the bottom of the gas collection chamber, and every two adjacent sub-chambers are communicated through the gap; each sub-chamber is provided with a gas taking port which can be communicated with the outside; and the liquid discharge valve is arranged at the liquid discharge port of the gas collection chamber and is used for controlling the opening and closing of the liquid discharge port. The sampling device is used for providing multiple sampling opportunities, reducing the operation pressure of workers and improving the success rate of sampling work.

Description

Technical Field

[0001] The present invention relates to the technical field of gas sampling, and in particular to a gas sampling device and a sampling method. Background Art

[0002] In the daily work of the power system, the gas relay is a very effective non-electrical relay protection device and one of the main protections of the main transformer. After the gas relay of the main transformer is activated, it is necessary to sample and analyze the fault gas in the gas relay in time to determine whether there is a fault in the main transformer and the severity of the fault.

[0003] However, due to the improvement of transformer quality and safe operation of power grid, the number of times the transformer gas relay is activated has decreased, and the staff has very little practical experience. Once the sampling operation is wrong, the fault gas leaks or the valve fails and causes the gas to escape, it will not be possible to repeat it. This leads to high operating pressure for the staff during sampling and a low success rate of the sampling work. Summary of the invention

[0004] The object of the present invention is to provide a gas sampling device and a sampling method, which are used to provide multiple sampling opportunities, reduce the operating pressure of the staff, and improve the success rate of the sampling work.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] On the one hand, the present invention provides a gas sampling device, which includes: a gas collecting component, a partition and a drain valve; the gas collecting component is provided with a gas collecting chamber, and the gas collecting chamber is provided with an air inlet and a drain port; the interior of the gas collecting chamber is filled with an inert liquid; the volume of the gas collecting chamber is greater than the volume of the gas to be sampled; the partition is arranged in the gas collecting chamber; the partition can divide the gas collecting chamber into a plurality of sub-chambers; there is a gap between the partition and the bottom inner wall of the gas collecting chamber, and two adjacent sub-chambers are connected through the gap; each of the sub-chambers is provided with a gas intake port that can be connected to the outside; the drain valve is arranged at the drain port of the gas collecting chamber, and is used to control the opening and closing of the drain port.

[0007] In some embodiments, the partition body includes a plurality of partition parts, and the plurality of partition parts are arranged in a horizontal direction so that the plurality of sub-chambers are arranged in a horizontal direction; there is a gap between the partition part and the bottom inner wall of the gas collecting chamber; the gas to be sampled enters the gas collecting chamber from one of the sub-chambers located at the end of the gas collecting chamber.

[0008] In some embodiments, the air intake port is arranged at the top of the sub-chamber; in the cross-sectional diagram of the partition portion, along the vertical direction, the width close to the top of the gas collecting chamber is greater than the width close to the bottom of the gas collecting chamber; the cross-sectional diagram is perpendicular to the extension direction of the partition portion.

[0009] In some embodiments, the surface of the bottom inner wall of the gas collecting chamber is an inclined surface, and the drain valve is arranged at the lower part of the inclined surface.

[0010] In some embodiments, a cross-sectional shape of the inclined surface of the bottom inner wall of the gas collecting chamber is in a "V" shape, and the cross-sectional shape is perpendicular to the extension direction of the partition body.

[0011] In some embodiments, the volumes of the plurality of sub-chambers are equal.

[0012] In some embodiments, the gas collecting assembly includes a top plate, a bottom plate, and a plurality of side plates arranged between the top plate and the bottom plate; at least one of the side plates is provided with an observation window, through which the gas collecting conditions in the gas collecting chamber can be observed.

[0013] In some embodiments, the sampling device further includes a gas extraction component, which can be in communication with the sub-chamber through the gas extraction port, and is used to extract the gas to be sampled in the sub-chamber.

[0014] In some embodiments, the gas extraction assembly includes a gas extraction valve and a syringe, the number of the gas extraction assemblies is the same as the number of the sub-chambers, and the two are arranged in a one-to-one correspondence; the syringe is connected to the gas extraction port of the sub-chamber through the gas extraction valve.

[0015] On the other hand, the present invention provides a gas sampling method, using the gas sampling device in any of the above embodiments, the sampling method includes: S100: allowing the gas to be sampled to pass into the gas collecting chamber through the gas inlet, and the inert liquid in the gas collecting chamber is discharged through the drain valve; S200: after the gas to be sampled passes into the sub-chamber, closing the drain valve; S300: selecting a sub-chamber filled with the gas to be sampled, and taking out the gas to be sampled in the sub-chamber through the gas outlet.

[0016] Beneficial effects of the present invention:

[0017] The present invention provides a gas sampling device, which comprises a gas collecting assembly having a gas collecting chamber, the interior of the gas collecting chamber is filled with an inert liquid, an air inlet and a liquid discharge port are provided on the gas collecting chamber, the volume of the gas collecting chamber is set to be larger than the volume of the gas to be sampled, and a partition is provided in the gas collecting chamber to divide the gas collecting chamber into a plurality of sub-chambers, and a gap connecting two adjacent sub-chambers is provided between the partition and the bottom inner wall of the gas collecting chamber, and each sub-chamber is provided with a gas inlet connected to the outside, and a liquid discharge valve is provided at the liquid discharge port of the gas collecting chamber, and the liquid discharge valve is used to control the opening and closing of the liquid discharge port. In the initial state, the gas collecting chamber is filled with inert liquid. When sampling is required, the gas to be sampled is introduced into the gas collecting chamber from the air inlet. As the gas to be sampled is gradually introduced, the inert liquid in the gas collecting chamber will be gradually discharged under the action of the gas pressure of the gas to be sampled. After a sub-chamber directly connected to the gas outlet is filled with the gas to be sampled, the gas to be sampled will flow into another sub-chamber adjacent to the sub-chamber through the gap between the partition body and the bottom inner wall of the gas collecting chamber. By analogy, multiple sub-chambers can be filled with the gas to be sampled in turn, and then the drain valve is closed to sample through the gas outlet located at the top of the sub-chamber. In this way, multiple sub-chambers filled with the gas to be sampled provide multiple sampling opportunities, reduce the operating pressure of the staff, and improve the success rate of sampling.

[0018] On the other hand, the present invention provides a gas sampling method, which realizes multiple sampling opportunities by adopting the above-mentioned gas sampling device, reduces the operating pressure of the staff, and improves the success rate of the sampling work. In addition, sampling by the above-mentioned gas sampling method can standardize and streamline the sampling work, avoid unnecessary operating steps, improve sampling efficiency, and facilitate the training of staff, further ensuring the success rate of the sampling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view of a gas sampling device provided by a specific embodiment of the present invention;

[0020] Figure 2 is an axonometric diagram of a gas sampling device provided by a specific embodiment of the present invention;

[0021] Figure 3 is a side view of a gas sampling device provided by a specific embodiment of the present invention;

[0022] Figure 4 It is a flow chart of a gas sampling method provided by a specific embodiment of the present invention.

[0023] In the figure:

[0024] 1. Gas collecting assembly; 11. Gas collecting chamber; 111. Sub-chamber; 12. Top plate; 13. Bottom plate; 14. Side plate; 2. Partition body; 21. Partition part; 3. Gas extraction assembly; 31. Syringe; 4. Gas extraction valve; 5. Oil drain valve; 6. Guide block; 7. Inlet valve; 8. Mounting frame; 81. Support plate; 82. Mounting plate. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly stipulated and limited, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0028] In addition, the terms “first” and “second” are merely used for distinction in description and have no special meanings.

[0029] like Figure 1 As shown, the present invention provides a gas sampling device, which includes a gas collecting component 1, a partition body 2 and a drain valve 5.

[0030] The gas collecting assembly 1 is provided with a gas collecting chamber 11, and the gas collecting chamber 11 is provided with an air inlet and a liquid discharge port. The container containing the gas to be sampled can be connected to the gas collecting chamber 11 through the air inlet, and the two are connected in the following manner, for example: an air inlet valve 7 is installed at the air inlet of the gas collecting chamber 11, and the gas collecting chamber 11 is connected to the container containing the gas to be sampled through the air inlet valve 7. The gas collecting chamber 11 is filled with an inert liquid, and the volume of the gas collecting chamber 11 is greater than the volume of the gas to be sampled.

[0031] The partition body 2 is disposed in the gas collecting chamber 11; the partition body 2 is, for example, a tooth-shaped structure, and the partition body 2 can divide the gas collecting chamber 11 into a plurality of sub-chambers 111; there is a gap between the partition body 2 and the bottom inner wall of the gas collecting chamber 11, and two adjacent sub-chambers 111 can be connected through the gap. In other words, the partition body 2 only has a gap with the bottom inner wall of the gas collecting chamber 11, and is fixedly connected or abutted with the top inner wall and the side inner wall of the gas collecting chamber 11, and two adjacent sub-chambers 111 can only be connected through the gap between the partition body 2 and the bottom inner wall of the gas collecting chamber 11. The size of the gap can be set according to the actual volume of the gas to be sampled and the volume of the gas collecting chamber 11. It can be understood that the container for holding the gas to be sampled is connected to one of the multiple sub-chambers 111. The above-mentioned multiple sub-chambers 111 are all provided with a gas intake port connected to the outside. The staff can take out the gas to be sampled in the sub-chamber 111 through the gas intake port. The specific method of taking out the gas to be sampled is, for example: using a gas intake container with an opening, connecting the opening of the gas intake container with the gas intake port, so that the gas to be sampled in the sub-chamber 111 can escape into the gas intake container, thereby realizing the removal of the gas to be sampled.

[0032] The drain valve 5 is disposed at the drain port of the gas collecting chamber 11 to control the opening and closing of the drain port. It is understandable that the drain valve 5 should be disposed at the bottom of the gas collecting chamber 11, or disposed at the side of the gas collecting chamber 11 and close to the bottom of the gas collecting chamber 11.

[0033] The volume of the gas collecting chamber 11 is larger than the volume of the gas to be sampled. Through the above arrangement, the gas collecting chamber 11 is filled with inert liquid, and the gas to be sampled is completely passed into the gas collecting chamber 11. After the inert liquid of the same volume as the gas to be sampled is discharged from the gas collecting chamber 11 under the gas pressure of the gas to be sampled, some inert liquid will still remain in the gas collecting chamber 11, and the remaining inert liquid in the gas collecting chamber 11 is located on the bottom inner wall of the gas collecting chamber 11 under the action of gravity, thereby playing the role of an oil seal.

[0034] Therefore, the present invention provides a gas sampling device, which is provided with a gas collecting component 1 having a gas collecting chamber 11, an air inlet and a liquid discharge port are opened on the gas collecting chamber 11, the inside of the gas collecting chamber 11 is filled with an inert liquid, the volume of the gas collecting chamber 11 is set to be larger than the volume of the gas to be sampled, and a partition body 2 is provided in the gas collecting chamber 11 to divide the gas collecting chamber 11 into a plurality of sub-chambers 111, and a gap connecting two adjacent sub-chambers 111 is provided between the partition body 2 and the bottom inner wall of the gas collecting chamber 11, and each sub-chamber 111 is provided with a gas intake port connected to the outside, and a liquid discharge valve 5 is provided at the liquid discharge port of the gas collecting chamber 11, and the liquid discharge valve 5 is used to control the opening and closing of the liquid discharge port. In the initial state, the gas collecting chamber 11 is filled with inert liquid. When sampling is required, the gas to be sampled is introduced into the gas collecting chamber 11 from the air inlet. As the gas to be sampled is gradually introduced, the inert liquid in the gas collecting chamber 11 will be gradually discharged under the action of the gas pressure of the gas to be sampled. After a sub-chamber 111 directly connected to the gas inlet is filled with the gas to be sampled, the gas to be sampled will flow into another sub-chamber 111 adjacent to the sub-chamber 111 through the gap between the partition body 2 and the bottom inner wall of the gas collecting chamber 11. Similarly, multiple sub-chambers 111 can be filled with the gas to be sampled in turn, and then the drain valve 5 is closed, and sampling can be performed through the gas inlet located at the top of the sub-chamber 111. In this way, multiple sub-chambers 111 filled with the gas to be sampled provide multiple sampling opportunities, reduce the operating pressure of the staff, and improve the success rate of the sampling work.

[0035] In some embodiments, Figure 1 As shown, the partition body 2 includes a plurality of partition parts 21, which are arranged in a horizontal direction, so that a plurality of sub-chambers 111 separated by the plurality of partition parts 21 are also arranged in a horizontal direction, and there is a gap between the partition part 21 and the bottom inner wall of the gas collecting chamber 11. The gas inlet is arranged at the top of the sub-chamber 111. Figure 1 Taking the perspective shown in FIG. 1 as an example, in the cross-sectional diagram of the partition portion 21, along the vertical direction, the width near the top of the gas collecting chamber 11 is greater than the width near the bottom of the gas collecting chamber 11; the cross-sectional diagram is perpendicular to the extension direction of the partition portion 21, for example, the cross-sectional diagram of the partition portion 21 is an inverted triangle or an inverted trapezoid. In other words, Figure 1 Taking the viewing angle shown as an example, the width dimension of the upper end of the partition portion 21 is greater than the width dimension of the lower end of the partition portion 21 .

[0036] In the above-mentioned sampling device, the partition body 2 is arranged as a plurality of partition parts 21 arranged in the horizontal direction, and the width dimension of the upper end of the partition part 21 is larger than the width dimension of the lower end. In this way, when the gas to be sampled is passed into the sub-chamber 111, since the gas to be sampled is lighter than the inert liquid in the sub-chamber 111, the gas to be sampled passed into the sub-chamber 111 has a tendency to flow toward the upper end of the sub-chamber 111. Due to the restriction of the partition part 21, the gas to be sampled will converge toward the upper end of the sub-chamber 111 along the contour of the two adjacent partition parts 21. When the gas to be sampled converges at the highest point of the upper end of the sub-chamber 111, it can facilitate the subsequent staff to take samples smoothly. At the same time, it can also ensure that the gas to be sampled in the sub-chamber 111 can be completely taken out to avoid residual gas to be sampled in the sub-chamber 111.

[0037] In some embodiments, Figure 1 As shown, the gas to be sampled is introduced into the gas collecting chamber 11 through a sub-chamber 111 located at the end of the gas collecting chamber 11, that is, Figure 1 Taking the perspective shown as an example, the gas to be sampled is passed into the gas collecting chamber 11 from a sub-chamber 111 on the leftmost side of the gas collecting chamber 11, or is passed into the gas collecting chamber 11 from a sub-chamber 111 on the rightmost side of the gas collecting chamber 11. Through the above arrangement, when the gas to be sampled is passed into multiple sub-chambers 111 of the gas collecting chamber 11, the gas to be sampled can only be passed into the multiple sub-chambers 111 in sequence along a single direction, so that the passing direction of the gas to be sampled is controllable, which is convenient for judging the gas collection conditions in the multiple sub-chambers 111, and further facilitates subsequent sampling by staff.

[0038] In some embodiments, the surface of the bottom inner wall of the gas collecting chamber 11 is an inclined surface, and the above-mentioned drain valve 5 is arranged at the lower part of the inclined surface. It can be understood that the inclined surface can be: the bottom inner wall of the gas collecting chamber 11 has been inclined during the manufacturing process, and the inclined surface and the bottom inner wall of the gas collecting chamber 11 are integrally formed; or the bottom inner wall of the gas collecting chamber 11 is horizontally arranged during the manufacturing process, but a guide block 6 with an inclined surface is subsequently arranged on the bottom inner wall of the gas collecting chamber 11. The following takes the case where the guide block 6 with an inclined surface is arranged on the bottom inner wall of the gas collecting chamber 11 as an example for specific description.

[0039] A guide block 6 is provided on the bottom inner wall of the gas collecting chamber 11. In the vertical direction, the height of one end of the guide block 6 is greater than the height of the other end of the guide block 6. Of the two ends of the guide block 6, the end with the smaller height is the outflow end. The outflow end is provided corresponding to the drain valve 5. It can be understood that the guide block 6 is provided on the bottom inner wall of the gas collecting chamber 11, and the side away from the bottom inner wall of the gas collecting chamber 11 is inclined. The drain valve 5 is provided near the lower part of the inclined structure. The guide block 6 is adapted to the bottom inner wall of the gas collecting chamber 11, that is, in the horizontal direction, the length and width of the guide block 6 are the same as the length and width of the bottom inner wall of the gas collecting chamber 11. Through the above-mentioned arrangement, the inert liquid inside the gas collecting chamber 11 automatically flows to the outlet end of the guide block 6 with a lower height along the contour of the side of the guide block 6 away from the bottom inner wall of the gas collecting chamber 11 under the action of gravity, so that the inert liquid always has a tendency to converge at the outlet end of the guide block 6, that is, the inert liquid in the gas collecting chamber 11 always has a tendency to converge at the position of the drain valve 5, which facilitates the drain valve 5 to discharge the inert liquid smoothly.

[0040] Of course, according to actual use requirements, the cross-sectional figure of the inclined surface of the bottom inner wall of the gas collecting chamber 11 can also be set in a "V" shape, and the cross-sectional figure here is perpendicular to the extension direction of the above-mentioned partition body 2. It can be understood that the "V"-shaped inclined surface can be: the bottom inner wall of the gas collecting chamber has been set in a "V" shape during the manufacturing process, and the "V"-shaped inclined surface and the bottom inner wall of the gas collecting chamber 11 are integrally formed; or the bottom inner wall of the gas collecting chamber 11 is set horizontally during the manufacturing process, but subsequently a guide block 6 with a "V"-shaped inclined surface is separately set on the bottom inner wall of the gas collecting chamber 11, or two guide blocks 6 with inclined surfaces as described above are set. The following takes the example of two guide blocks 6 with inclined surfaces set on the bottom inner wall of the gas collecting chamber 11 as an example for specific explanation.

[0041] The number of the guide blocks 6 is two, and the outflow ends of the two guide blocks 6 are both arranged corresponding to the drain valve 5; the drain valve 5 is arranged at the bottom of the gas collecting chamber 11. Figure 1 Taking the above perspective as an example, after two guide blocks 6 are arranged on the bottom inner wall of the gas collecting chamber 11, the outflow ends of the two guide blocks 6 are arranged close to each other, so that the sides of the two guide blocks 6 away from the bottom inner wall of the gas collecting chamber 11 are combined to form a "V"-shaped structure, and the drain valve 5 is arranged at the lowest point of the "V"-shaped structure. Through the above arrangement, the tendency of the inert liquid in the gas collecting chamber 11 to always gather at the position of the drain valve 5 is more obvious, which further facilitates the drain valve 5 to discharge the inert liquid smoothly.

[0042] In some embodiments, the volumes of the above-mentioned multiple sub-chambers 111 are equal. Through this arrangement, the volume of the gas to be sampled entering each sub-chamber 111 is equal, and thus the volume of the gas to be sampled obtained by the staff each time is equal, which facilitates the subsequent analysis of the gas to be sampled.

[0043] In some embodiments, in combination Figure 2 , Figure 3 As shown, the gas collection assembly 1 comprises a top plate 12, a bottom plate 13 and a plurality of side plates 14 arranged between the top plate 12 and the bottom plate 13; at least one of the side plates 14 is provided with an observation window, through which the gas collection situation in the gas collection chamber 11 can be observed. In this way, the staff can directly observe the gas collection situation of the plurality of sub-chambers 111 of the gas collection assembly 1 through the observation window, thereby facilitating the subsequent sampling work; at the same time, it can also facilitate the staff to control the sampling situation. When the gas to be sampled in the sub-chamber 111 is completely taken out or is about to be completely taken out, the staff can stop sampling or slow down the sampling speed in time to prevent the inert liquid in the sub-chamber 111 from entering the gas collection container, facilitating the subsequent analysis of the gas to be sampled.

[0044] In some embodiments, in combination Figure 2 , Figure 3 As shown, the sampling device further includes a gas extraction component 3. The gas extraction component 3 can be connected to the sub-chamber 111 through the gas extraction port, and is used to extract the gas to be sampled in the sub-chamber 111. Here, the gas extraction component 3 is connected to the sub-chamber 111 in a manner such as: connected through a valve, or the gas extraction component 3 is directly connected to the gas extraction port of the sub-chamber 111. It is understandable that the gas extraction component 3 can selectively be connected to one of the sub-chambers 111 among the multiple sub-chambers 111.

[0045] The above-mentioned gas extraction component 3 includes a gas extraction valve 4 and a syringe 31. The number of gas extraction components 3 is the same as the number of the above-mentioned sub-chambers 111, and the two are arranged in a one-to-one correspondence; the syringe 31 can be connected to the gas extraction port of the sub-chamber 111 through the gas extraction valve 4. It is not difficult to understand that the gas extraction valve 4 is arranged at the upper end of the sub-chamber 111, which can facilitate the extraction of the gas to be sampled inside the sub-chamber 111. The connection method between the above-mentioned syringe 31 and the gas extraction valve 4 is, for example: a sampling tube is connected between the air inlet end of the syringe 31 and the air outlet end of the gas extraction valve 4, and the gas extraction valve 4 is connected to the syringe 31 through the sampling tube. Through the above-mentioned arrangement, each sub-chamber 111 is provided with a corresponding air extraction valve 4 and a syringe 31. The air extraction valve 4 can control the start and stop of the sampling operation, and can also prevent the gas to be sampled in the sub-chamber 111 from escaping when no sampling is performed. The gas to be sampled in the sub-chamber 111 is sampled by the syringe 31, which is simple to operate and easy to use. At the same time, when the internal pressure of the sub-chamber 111 is relatively low, the syringe 31 can be actively controlled to suck out the gas to be sampled in the sub-chamber 111, thereby improving the sampling efficiency.

[0046] In addition, according to actual use requirements, the number of the syringes 31 can be set to 1, the number of the air extraction valves 4 and the sub-chambers 111 remain the same, and the air inlet end of the syringe 31 is connected to the air outlet end of the air extraction valve 4 through a sampling tube. When a single sampling fails, the sampling tube can be kept connected to the air inlet end of the syringe 31, the connection between the sampling tube and the air outlet end of the air extraction valve 4 can be disconnected, and the sampling tube can be connected to the air outlet end of the air extraction valve 4 corresponding to another sub-chamber 111, so that the next sub-chamber 111 can be sampled.

[0047] In some embodiments, in combination Figure 2 , Figure 3 As shown, the sampling device further includes a mounting frame 8, which is used to mount the gas collection component 1 and the gas extraction component 3. The structure of the mounting frame 8 is, for example, as follows: the mounting frame 8 includes a support plate 81 and a mounting plate 82, the support plate 81 is horizontally arranged, and the mounting plate 82 is vertically mounted on the support plate 81, wherein the connection between the mounting plate 82 and the support plate 81 is, for example, welding; the mounting plate 82 and the support plate 81 are in an inverted "T" structure; the gas collection component 1 and the gas extraction component 3 are respectively mounted on opposite sides of the mounting plate 82, and the gas collection component 1 and the gas extraction component 3 are, for example, connected to the mounting plate 82 by welding or bolts. Through the above arrangement, the gas collection component 1 and the gas extraction component 3 can be mounted on the same structure, which is convenient for the placement and transportation of the entire sampling device.

[0048] The present invention also provides a gas sampling method, using the gas sampling device described in any of the above embodiments, such as Figure 4 As shown, the sampling method includes:

[0049] S100 : The gas to be sampled is passed into the gas collecting chamber 11 , and the inert liquid in the gas collecting chamber 11 is discharged through the drain valve 5 .

[0050] S200: After the gas to be sampled is introduced into the sub-chamber 111, the drain valve 5 is closed.

[0051] S300: Select a sub-chamber 111 filled with the gas to be sampled, and take out the gas to be sampled in the sub-chamber 111 through the gas taking port. Specifically, after selecting a sub-chamber 111 filled with the gas to be sampled, connect the gas taking container (such as the gas taking component 3) with the sub-chamber 111 through the gas taking port, so that the gas to be sampled in the sub-chamber 111 passes into the gas taking container, thereby taking out the gas to be sampled in the sub-chamber 111.

[0052] It is understandable that after step S300, step S400 may be further included: when the gas extraction container is full of the gas to be sampled or the gas to be sampled in the sub-chamber 111 is completely exhausted, the gas extraction container is disconnected from the sub-chamber 111 to facilitate the subsequent analysis of the gas to be sampled.

[0053] When a single sampling fails or additional sampling is required, step S300 may be repeated.

[0054] The gas sampling method realizes multiple sampling opportunities by adopting the gas sampling device in any of the above embodiments, reduces the operating pressure of the staff, and improves the success rate of the sampling work. In addition, the sampling by the above gas sampling method can standardize and streamline the sampling work, avoid unnecessary operation steps, improve the sampling efficiency, and facilitate the training of the staff, further ensuring the success rate of the sampling work.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gas sampling device, characterized in that: The sampling device comprises: A gas collection component (1), the gas collection component (1) being provided with a gas collection chamber (11), the gas collection chamber (11) being provided with a gas inlet and a liquid discharge port; the interior of the gas collection chamber is filled with an inert liquid; the volume of the gas collection chamber (11) is greater than the volume of the gas to be sampled; A partition body (2), the partition body (2) being arranged in the gas collecting chamber (11); the partition body (2) being capable of dividing the gas collecting chamber (11) into a plurality of sub-chambers (111); a gap being provided between the partition body (2) and the bottom inner wall of the gas collecting chamber (11), and two adjacent sub-chambers (111) being connected via the gap; each of the sub-chambers (111) being provided with a gas inlet capable of being connected to the outside; A liquid discharge valve (5), the liquid discharge valve (5) being arranged at the liquid discharge port of the gas collecting chamber (11) and being used for controlling the opening and closing of the liquid discharge port.

2. The sampling device according to claim 1, characterized in that: The partition body (2) comprises a plurality of partition parts (21), and the plurality of partition parts (21) are arranged in a horizontal direction, so that the plurality of sub-chambers (111) are arranged in a horizontal direction; a gap is provided between the partition part (21) and the bottom inner wall of the gas collecting chamber (11); and the gas to be sampled is passed into the gas collecting chamber (11) from one of the sub-chambers (111) located at the end of the gas collecting chamber (11).

3. The sampling device according to claim 2, characterized in that: The air intake port is arranged at the top of the sub-chamber (111); in the cross-sectional diagram of the partition portion (21), along the vertical direction, the width close to the top of the gas collecting chamber (11) is greater than the width close to the bottom of the gas collecting chamber (11); the cross-sectional diagram is perpendicular to the extension direction of the partition portion (21).

4. The sampling device according to claim 1, characterized in that: The surface of the bottom inner wall of the gas collecting chamber (11) is an inclined surface, and the drain valve (5) is arranged at the lower part of the inclined surface.

5. The sampling device according to claim 4, characterized in that: The cross-sectional shape of the inclined surface of the bottom inner wall of the gas collecting chamber is in a "V" shape, and the cross-sectional shape is perpendicular to the extension direction of the partition body (2).

6. The sampling device according to claim 1, characterized in that: The volumes of the plurality of sub-chambers (111) are equal.

7. The sampling device according to any one of claims 1 to 6, characterized in that: The gas collection assembly (1) comprises a top plate (12), a bottom plate (13), and a plurality of side plates (14) arranged between the top plate (12) and the bottom plate (13); at least one of the side plates (14) is provided with an observation window, through which the gas collection conditions in the gas collection chamber (11) can be observed.

8. The sampling device according to any one of claims 1 to 6, characterized in that: The sampling device further comprises a gas extraction component (3), wherein the gas extraction component (3) can be connected to the sub-chamber (111) through the gas extraction port, and is used for extracting the gas to be sampled in the sub-chamber (111).

9. The sampling device according to claim 8, characterized in that: The air extraction assembly (3) comprises an air extraction valve (4) and a syringe (31); the number of the air extraction assemblies (3) is the same as the number of the sub-chambers (111), and the two are arranged in a one-to-one correspondence; the syringe (31) is connected to the air extraction port of the sub-chamber (111) through the air extraction valve (4).

10. A gas sampling method, characterized in that: Using the gas sampling device according to any one of claims 1 to 9, the sampling method comprises: S100: allowing the gas to be sampled to pass into the gas collecting chamber (11) through the gas inlet, and the inert liquid in the gas collecting chamber (11) is discharged through the drain valve (5); S200: After the gas to be sampled is introduced into the sub-chamber (111), the drain valve (5) is closed; S300: selecting a sub-chamber (111) filled with the gas to be sampled, and taking out the gas to be sampled in the sub-chamber (111) through the gas extraction port.

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