An aquatic gas collection device

Abstract

The utility model discloses a water area gas collection device relates to water area natural gas collection technical field. The water area gas collection device includes: the collection cover is equipped with the collection opening for the collection natural gas in the water area leakage, and the collection cover is connected end for the one end away from the collection opening, and the anti -floating frame is installed in the open end of collection cover, and the anti -floating frame weight is greater than the collection cover weight, and the gas conveying subassembly includes conveying gas pump and conveying pipe, and conveying gas pump is installed in the connected end, and the gas inlet end of conveying gas pump is in the inside communication with the collection cover, and the gas outlet end of conveying gas pump is in the communication with one end of conveying pipe, and the other end of conveying pipe is in the communication with the gas collection subassembly, and the gas collection subassembly is the split type structure with the collection cover, and the operating rod is connected with the anti -floating frame one end, and the length of operating rod is adjustable. The water area gas collection device is used in the process of collecting the leaked natural gas in the water area environment to improve the stability of natural gas collection, improves the collection efficiency, and improves the practicality of the collection device.

Description

Technical Field

[0001] This utility model relates to the field of natural gas collection technology in water areas, and in particular to a gas collection device for water areas. Background Technology

[0002] Existing natural gas pipelines sometimes cross bodies of water, where a large number of bubbles are generated. In response to these unusual phenomena, such as the generation of numerous bubbles, it is necessary to quickly collect the leaked gas to determine if it is a natural gas leak. On one hand, natural gas has a certain degree of diffusion in water; after a leak, it will rapidly spread throughout the water, forming a difficult-to-capture gas cloud. On the other hand, the aquatic environment is complex and variable; factors such as water flow speed, water temperature, and water depth can all affect the diffusion and collection of natural gas leaks.

[0003] Most existing gas collection devices are designed for terrestrial environments, and their poor adaptability and instability in aquatic environments make them unable to meet the demand for rapid and efficient collection of natural gas leaks in water. Furthermore, some gas collection devices designed for aquatic environments are easily affected by water flow, resulting in unstable collection processes, low collection efficiency, and inconvenient replacement of collection containers during the collection process.

[0004] Therefore, there is an urgent need for a water gas collection device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a water gas collection device that improves the stability and efficiency of natural gas collection during the collection of leaked natural gas in aquatic environments, while also enhancing the practicality of the collection device.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a water area gas collection device for collecting leaked natural gas from a natural gas pipeline located in a water area. The device includes: a collection hood, an anti-buoyancy frame, a gas delivery assembly, and an operating rod. The collection hood has a collection opening for collecting the leaked natural gas in the water area; one end of the collection hood with the collection opening is the open end, and the end away from the collection opening is the connecting end; the anti-buoyancy frame is installed at the open end of the collection hood; the weight of the anti-buoyancy frame is greater than the weight of the collection hood; the gas delivery assembly includes a delivery pump and a delivery pipe; the delivery pump is installed at the connecting end; the inlet end of the delivery pump is connected to the interior of the collection hood, and the outlet end of the delivery pump is connected to one end of the delivery pipe; the other end of the delivery pipe is connected to the gas collection assembly; the gas collection assembly and the collection hood are separate structures; the operating rod is connected at one end to the anti-buoyancy frame; the length of the operating rod is adjustable.

[0008] In some embodiments, the anti-buoyancy frame has an annular structure; the anti-buoyancy frame has an annular mounting groove on the side facing the collection cover; the annular mounting groove is adapted to the collection opening; the opening end of the collection cover can be inserted into the annular mounting groove; the anti-buoyancy frame can be detachably installed on the opening end of the collection cover by a locking member.

[0009] In some embodiments, in a first direction, the cross-sectional area of ​​the collection cover decreases from the opening end to the connection end; the first direction is a vertical direction; and the plane containing the cross-section is perpendicular to the first direction.

[0010] In some embodiments, the gas collection assembly includes: a collection container having a collection opening for collecting the natural gas; a seal installed on the collection opening for sealing the collection opening; and an inlet assembly having one end connected to the delivery pipe and the other end connected to the interior of the collection container.

[0011] In some embodiments, the air intake assembly includes an air intake pipe and a one-way valve; one end of the air intake pipe is connected to the delivery pipe, and the other end passes through the seal and is connected to the inside of the collection container; the one-way valve is disposed on the air intake pipe and enables the natural gas to flow unidirectionally into the inside of the collection container.

[0012] In some embodiments, the collection container is provided with a buffer.

[0013] In some embodiments, the collection assembly further includes an air outlet component, one end of which is connected to the interior of the collection container and the other end of which is connected to a detection device.

[0014] In some embodiments, the venting assembly includes a venting pipe and a control valve; one end of the venting pipe passes through the seal and communicates with the interior of the collection container, and the other end is able to communicate with the detection device; the control valve is disposed on the venting pipe and enables selective communication between the interior of the collection container and the detection device.

[0015] In some embodiments, the operating lever is a telescopic lever; the operating lever includes a plurality of hollow sub-lever bodies; the plurality of sub-lever bodies are sequentially sleeved and can slide relative to each other.

[0016] In some embodiments, the operating lever is connected to the anti-buoyancy frame via a hinge, such that the angle between the extension direction of the operating lever and the second direction is adjustable; the second direction is a horizontal direction.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a water gas collection device, which is made by setting a collection hood with a collection opening, installing an anti-buoyancy frame at the opening end of the collection hood, and setting the weight of the anti-buoyancy frame to be greater than the weight of the collection hood. This design ensures stability during the collection of leaked natural gas from water bodies using the aforementioned water gas collection device. The anti-buoyancy frame, being quite heavy, stabilizes the collection hood, keeping its opening horizontal and preventing tilting due to water flow, thus preventing leaks. Furthermore, the gas delivery assembly, with a pump and pipe, connects one end to the inside of the collection hood and the other to the gas collection container. This allows the pump to pressurize the gas inside the hood, accelerating collection and improving efficiency. Finally, the separate structure of the gas collection container and the collection hood allows the collection container to be easily accessible to personnel via the extension of the delivery pipe, facilitating container replacement and enhancing the device's practicality. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a water gas collection device provided in a specific embodiment of this utility model;

[0020] Figure 2 This is a perspective structural diagram of a collection cover, an anti-buoyancy frame, and a delivery air pump provided in a specific embodiment of this utility model;

[0021] Figure 3 This is a partial structural diagram of a water gas collection device provided in a specific embodiment of this utility model;

[0022] Figure 4 This is a structural diagram of a gas collection assembly provided in a specific embodiment of this utility model.

[0023] In the picture:

[0024] 1. Collection hood; 2. Anti-buoyancy frame; 3. Gas delivery assembly; 31. Delivery air pump; 32. Delivery pipe; 4. Gas collection assembly; 41. Collection container; 42. Seal; 43. Inlet assembly; 431. Inlet pipe; 432. One-way valve; 44. Outlet assembly; 441. Outlet pipe; 442. Control valve; 5. Operating lever;

[0025] X1, first direction; X2, second direction. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] like Figure 1 As shown, this embodiment provides a water gas collection device for collecting leaked natural gas from a natural gas pipeline located in water. The water gas collection device includes a collection hood 1, an anti-buoyancy frame 2, a gas delivery assembly 3, a gas collection assembly 4, and an operating lever 5.

[0031] like Figure 2As shown, the aforementioned collection hood 1 is provided with a collection opening for collecting leaked natural gas from the water body. One end of the collection hood 1 with the collection opening is the opening end, and the end furthest from the collection opening is the connection end. The collection hood 1 is made of a transparent material. Exemplarily, the material of the collection hood 1 is polycarbonate, which has high light transmittance, high temperature resistance, strong chemical corrosion resistance (resistant to corrosive gases such as acids, alkalis, and organic solvents), and excellent mechanical strength. Alternatively, the material of the collection hood 1 can be acrylic, which has high light transmittance, is lightweight, and has low cost. Those skilled in the art can choose according to actual usage needs; an exhaustive list is not provided here.

[0032] like Figure 2 As shown, the aforementioned anti-buoyancy frame 2 is installed at the open end of the collection shroud 1. The weight of the anti-buoyancy frame 2 is greater than the weight of the collection shroud 1. The anti-buoyancy frame 2 is made of a high-density material. For example, the material of the anti-buoyancy frame 2 is stainless steel. Anti-buoyancy frames made of stainless steel have high density, strong corrosion resistance, excellent mechanical strength, long service life, and no risk of rust damage. Alternatively, the material of the anti-buoyancy frame 2 is cast iron. Anti-buoyancy frames made of cast iron have high density, good casting performance (can be integrally molded into complex frame structures, such as an integrated design with mounting holes and limiting grooves), low cost, and easily controllable weight (weight can be increased by adjusting the casting thickness and adding reinforcing ribs). Those skilled in the art can choose according to actual usage needs; an exhaustive list is not provided here.

[0033] like Figure 1 , Figure 3 As shown, the gas delivery assembly 3 includes a delivery pump 31 and a delivery pipe 32. The delivery pump 31 is, for example, a small electric diaphragm pump, and the delivery pipe 32 is, for example, a flexible pipe. The delivery pump 31 is installed at the connection end of the collection hood 1, that is, at the upper end of the collection hood 1. The delivery pump 31 is, for example, a small electric diaphragm pump. The air inlet of the delivery pump 31 is connected to the interior of the collection hood 1. Here, the connection between the two is achieved, for example, by providing a connecting pipe between the air inlet of the delivery pump 31 and the connection end of the collection hood 1. One end of the connecting pipe is located inside the collection hood 1, and the other end is located outside the collection hood 1 and connected to the air inlet of the delivery pump 31, thus achieving the connection between the air inlet of the delivery pump 31 and the interior of the collection hood 1. The air outlet of the delivery pump 31 is connected to one end of the delivery pipe 32, and the other end of the delivery pipe 32 is connected to the gas collection assembly 4. The gas collection assembly 4 and the collection hood 1 are separate structures. In other words, the gas collection assembly 4 is not located on the collection hood 1. Instead, the gas collection assembly 4 is extended through the delivery pipe 32 and can be placed near the staff, making it convenient for the staff to replace the collection container 41.

[0034] like Figure 1As shown, one end of the operating rod 5 is connected to the anti-buoyancy frame 2. The length of the operating rod 5 is adjustable. For example, the operating rod 5 is a telescopic rod. The operating rod 5 includes multiple hollow sub-rods. The multiple sub-rods are sequentially nested and can slide relative to each other. For example, the operating rod 5 includes three sub-rods, all of which are hollow structures, or tubular structures. These three sub-rods are named the outer tube, the middle tube, and the inner tube, respectively. At the same time, they are designed according to the diameter gradient of "outer tube > middle tube > inner tube", so that the outer tube can fit over the middle tube, the middle tube can fit over the inner tube, and the three tubes can slide relative to each other, thereby realizing the overall adjustable length of the operating rod 5. Furthermore, the operating lever 5 can also be equipped with a stepped limiting and anti-detachment structure. Specifically, an annular limiting step (the step diameter is 1mm to 2mm larger than the inner tube body) is machined at the tail of the inner tube, and a corresponding limiting retaining ring (the inner diameter is larger than the inner tube limiting step diameter) is machined on the inner side of the head of the middle tube. At the same time, an annular limiting step (the step diameter is 1mm to 2mm larger than the middle tube body) is machined at the tail of the middle tube, and a corresponding limiting retaining ring (the inner diameter is larger than the middle tube limiting step diameter) is machined on the inner side of the head of the outer tube. In this way, when the outer tube is fitted onto the middle tube and the middle tube is fitted onto the inner tube, the three tubes can achieve limiting and anti-detachment by utilizing the cooperation of the limiting step and the limiting retaining ring. Furthermore, the operating lever 5 can also be equipped with a spring pin locking mechanism (e.g., the structure of a leveling rod). Specifically, two pin holes are symmetrically opened on the side wall of the inner tube head, and a steel ball positioning pin with a return spring is installed in the hole (the steel ball protrudes 1.5mm to 2mm). A positioning hole (matching the diameter of the pin hole) is opened at the corresponding position at the tail of the middle tube, or multiple positioning holes are opened at intervals along the axial direction on the inner wall of the middle tube. When stretched, the inner tube slides outward, and the steel ball is compressed by the inner wall of the middle tube, compressing the spring. When it slides to the positioning hole position, the spring returns and pushes the steel ball into the positioning hole, realizing the current length locking. When it is necessary to retract, the steel ball is pressed to retract into the pin hole, releasing the lock, and pushing the inner tube to retract axially until the steel ball is locked into the next level positioning hole or completely retracted into the middle tube. The spring pin locking mechanism between the middle tube and the outer tube is the same, and will not be described again here.

[0035] Therefore, the water gas collection device provided in this embodiment is provided by setting a collection hood 1 with a collection opening, installing an anti-buoyancy frame 2 at the opening end of the collection hood 1, and setting the weight of the anti-buoyancy frame 2 to be greater than the weight of the collection hood 1. This design ensures stability during the collection of leaked natural gas from water bodies using the aforementioned water gas collection device. The anti-buoyancy frame 2, being relatively heavy, stabilizes the collection hood 1, keeping its opening horizontal and preventing tilting due to water flow, thus preventing leaks. Furthermore, the gas delivery assembly 3, with a delivery pump 31 and a delivery pipe 32, connects one end to the inside of the collection hood 1 and the other end to the gas collection assembly 4. This allows the gas pump 31 to pressurize the gas inside the collection hood 1, accelerating collection and improving efficiency. Additionally, the gas collection assembly 4 and the collection hood 1 are separate units. The gas collection assembly 4, via the extension of the delivery pipe 32, can be placed near the operator, facilitating easy replacement of the collection container 41 and enhancing the practicality of the device.

[0036] In some implementations, the aforementioned anti-buoyancy frame 2 has a ring-shaped structure. The anti-buoyancy frame 2 has an annular mounting groove on the side facing the collection cover 1. The annular mounting groove is adapted to the collection opening of the collection cover 1. It is easy to understand that "adapted" here means that the shape and size of the annular mounting groove are the same as the shape and size of the collection opening. For example, if the collection opening of the collection cover 1 is circular, then the annular mounting groove is an annular groove, and the inner diameter of the annular groove is the same as (or slightly smaller than) the inner diameter of the collection opening, and the outer diameter of the annular groove is the same as (or slightly larger than) the outer diameter of the collection opening. The open end of the collection cover 1 can be inserted into the annular mounting groove. The anti-buoyancy frame 2 can be detachably installed to the open end of the collection cover 1 by means of a locking element, such as a bolt. This arrangement facilitates the installation and removal of the anti-buoyancy frame 2 and ensures a more secure connection between the anti-buoyancy frame 2 and the collection cover 1.

[0037] In some embodiments, such as Figure 2As shown, in the first direction X1, the cross-sectional area of ​​the collection hood 1 decreases from the opening end to the connecting end. This first direction X1 is vertical, and the plane containing the cross-section is perpendicular to the first direction X1. In other words, the collection hood 1 has a conical shell structure that is larger at the bottom and smaller at the top. This design allows for a larger opening area, facilitating the collection of leaked natural gas from the water, and also allows the natural gas inside the collection hood 1 to accumulate at the connecting end, facilitating the delivery of gas by the gas delivery assembly 3.

[0038] In some embodiments, combined with Figure 3 , Figure 4 As shown, the gas collection assembly 4 includes a collection container 41, a seal 42, and an inlet assembly 43. The collection container 41 has a collection opening for collecting natural gas. The collection container 41 is, for example, a collection bottle. The seal 42 is installed on the collection opening of the collection container 41 to seal it. The seal 42 is, for example, a flexible sealing plug. One end of the inlet assembly 43 is connected to the delivery pipe 32 of the gas delivery assembly 3, and the other end is connected to the interior of the collection container 41.

[0039] For example, such as Figure 4 As shown, the aforementioned air intake assembly 43 includes an air intake pipe 431 and a one-way valve 432. One end of the air intake pipe 431 is connected to the delivery pipe 32 of the gas delivery assembly 3, and the other end passes through the aforementioned seal 42 and communicates with the interior of the collection container 41. The one-way valve 432 is located in the air intake pipe 431, allowing natural gas to flow unidirectionally into the collection container 41. This design facilitates the collection of natural gas by the collection container 41 and prevents leakage of natural gas inside the collection container 41 during replacement or removal.

[0040] In some embodiments, the collection container 41 is provided with a buffer. For example, the buffer is a porous adsorption material, such as activated carbon, molecular sieves, or silica gel desiccant, suitable for adsorbing moisture and trace impurities, and does not react with natural gas; or, the buffer is a flexible buffer material, such as polyurethane foam, polyester fiber cotton, or silica gel cotton, which is soft, effectively absorbs airflow impact, and has good permeability without hindering gas collection. By providing a buffer inside the collection container 41, the impact of the natural gas flow on the inner wall of the collection container 41 can be reduced, preventing damage to the collection container 41 due to excessive instantaneous pressure. Simultaneously, it can adsorb impurities and moisture, ensuring the purity of the collected natural gas and facilitating subsequent detection or processing.

[0041] In some embodiments, combined with Figure 3 , Figure 4 As shown, the gas collection assembly 4 further includes a gas outlet assembly 44. One end of the gas outlet assembly 44 is connected to the interior of the collection container 41, and the other end is connected to the detection device.

[0042] For example, such as Figure 4 As shown, the gas outlet assembly 44 includes an outlet pipe 441 and a control valve 442. One end of the outlet pipe 441 passes through a seal 42 and communicates with the interior of the collection container 41, while the other end can communicate with a detection device. The control valve 442 is located on the outlet pipe 441, enabling selective communication between the interior of the collection container 41 and the detection device. This arrangement facilitates the detection of the natural gas collected in the collection container 41.

[0043] In some embodiments, the operating lever 5 is connected to the anti-buoyancy frame 2 via a hinge, making the angle between the extension direction of the operating lever 5 and the second direction X2, where the second direction X2 is horizontal, adjustable. This configuration allows for angle adjustment of the operating lever 5, facilitating its use by operators according to different scenarios. For example, the end of the operating lever 5 is connected to the anti-buoyancy frame 2 via a hinge connection structure with a locking mechanism. Specifically, the connection structure includes a fixed seat, a hinge shaft, and a locking component. The fixed seat is fixed to the preset position of the anti-buoyancy frame 2 by welding or bolting. The fixed seat has a "U"-shaped opening structure with coaxial hinge shaft holes symmetrically opened on both sides of the opening. A connecting ear plate is welded to the end of the operating rod 5. The size of the connecting ear plate is adapted to the opening width of the fixed seat (it can be embedded in the opening), and a through hole matching the hinge shaft hole is opened. The hinge shaft is processed into a smooth shaft with a length larger than the opening width of the fixed seat. One end is processed with an annular groove (for installing an anti-disengagement spring), and the other end is processed with an external thread (for engaging the locking component). The locking component is, for example, a nut, which is adapted to the external thread at the end of the hinge shaft and is sleeved on the hinge shaft. By tightening the locking component, the rotation angle of the connecting ear plate can be locked by friction, thereby fixing the angle of the operating rod 5.

[0044] Of course, the aforementioned operating lever 5 can also be adjusted in other ways as described in the prior art, such as by providing a universal joint between the end of the operating lever 5 and the anti-buoyancy frame 2, and simultaneously providing a locking component. Those skilled in the art can make specific settings according to actual usage requirements, which will not be described in detail here.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water gas collection device for collecting leaked natural gas from a natural gas pipeline located in a water area, characterized in that, include: A collection hood (1) is provided with a collection opening for collecting the natural gas leaking from the water body; The end of the collection cover (1) with the collection opening is the opening end, and the end away from the collection opening is the connection end; An anti-buoyancy frame (2) is installed at the open end of the collection cover (1); the weight of the anti-buoyancy frame (2) is greater than the weight of the collection cover (1); The gas delivery assembly (3) includes a delivery pump (31) and a delivery pipe (32); the delivery pump (31) is installed at the connection end; the inlet end of the delivery pump (31) is connected to the interior of the collection hood (1), and the outlet end of the delivery pump (31) is connected to one end of the delivery pipe (32); the other end of the delivery pipe (32) is connected to the gas collection assembly (4); the gas collection assembly (4) and the collection hood (1) are separate structures. The operating rod (5) is connected at one end to the anti-buoyancy frame (2); the length of the operating rod (5) is adjustable.

2. The water gas collection device according to claim 1, characterized in that, The anti-buoyancy frame (2) has a ring structure; the anti-buoyancy frame (2) has an annular mounting groove on the side facing the collection cover (1); the annular mounting groove is adapted to the collection opening; the opening end of the collection cover (1) can be inserted into the annular mounting groove; the anti-buoyancy frame (2) can be detachably installed on the opening end of the collection cover (1) by means of a locking member.

3. The water gas collection device according to claim 1, characterized in that, In the first direction (X1), from the opening end to the connection end, the cross-sectional area of ​​the collection cover (1) is set in a decreasing manner; the first direction (X1) is a vertical direction; the plane of the cross section is perpendicular to the first direction (X1).

4. The water gas collection device according to claim 1, characterized in that, The gas collection assembly (4) includes: A collection container (41) is provided with a collection opening for collecting the natural gas; A sealing element (42) is installed in the collection opening to seal the collection opening; The air intake assembly (43) is connected at one end to the delivery pipe (32) and at the other end to the inside of the collection container (41).

5. The water gas collection device according to claim 4, characterized in that, The air intake assembly (43) includes an air intake pipe (431) and a one-way valve (432); one end of the air intake pipe (431) is connected to the delivery pipe (32), and the other end passes through the seal (42) and is connected to the inside of the collection container (41); the one-way valve (432) is provided on the air intake pipe (431) and enables the natural gas to flow unidirectionally into the inside of the collection container (41).

6. The water gas collection device according to claim 4, characterized in that, The collection container (41) is equipped with a buffer.

7. The water gas collection device according to claim 4, characterized in that, The gas collection assembly (4) also includes: The air outlet assembly (44) is connected to the inside of the collection container (41) at one end and to the detection device at the other end.

8. The water gas collection device according to claim 7, characterized in that, The venting assembly (44) includes a venting pipe (441) and a control valve (442); one end of the venting pipe (441) passes through the seal (42) and communicates with the inside of the collection container (41), and the other end can communicate with the detection device; the control valve (442) is provided on the venting pipe (441) and can selectively communicate with the inside of the collection container (41) and the detection device.

9. The water gas collection device according to any one of claims 1 to 8, characterized in that, The operating lever (5) is a telescopic lever; the operating lever (5) includes multiple hollow sub-lever bodies; the multiple sub-lever bodies are sequentially nested and can slide relative to each other.

10. The water gas collection device according to any one of claims 1 to 8, characterized in that, The operating rod (5) is connected to the anti-buoyancy frame (2) by a hinge, so that the angle between the extension direction of the operating rod (5) and the second direction (X2) is adjustable; the second direction (X2) is a horizontal direction.

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