Gas sampling device

Abstract

The embodiment of the invention provides a gas sampling device, and relates to the field of gas sampling. The gas sampling device comprises a sampling pipeline and a sampling bottle communicated with the sampling pipeline; the sampling pipeline comprises a main pipeline as well as a first pipeline and a second pipeline which are connected to the output end of the main pipeline, and the first pipeline is communicated with the sampling bottle; the second pipeline is communicated with the sampling bottle; the second pipeline is provided with a pressurizing structure which is at least used for pressurizing the gas sample from the main pipeline. According to the embodiment of the invention, the difficulty of acquiring the gas sample can be reduced, and the sampling effect of the gas sample is improved.

Description

Technical Field

[0001] This application relates to the field of gas sampling, and more particularly to gas sampling apparatus. Background Technology

[0002] With the increasing demands for environmental protection and equipment reliability in power systems, the application of gases such as C4F7N is rising, making the accurate detection of their decomposition products increasingly important.

[0003] In related technologies, gas samples can be collected on-site using sampling bottles, and then analyzed and detected using laboratory analytical equipment. However, due to limitations such as gas pressure, obtaining gas samples using sampling bottles is difficult and yields poor sampling results. Summary of the Invention

[0004] This application provides a gas sampling device to solve the problems of difficulty in obtaining gas samples through sampling bottles and poor sampling effect.

[0005] The gas sampling device provided in this application includes a sampling pipeline and a sampling bottle connected to the sampling pipeline;

[0006] The sampling pipeline includes a main pipeline, and a first pipeline and a second pipeline connected to the output end of the main pipeline, wherein the first pipeline is connected to the sampling bottle;

[0007] The second pipeline is connected to the sampling bottle; the second pipeline is provided with a pressurization structure, which is used at least to pressurize the gas sample from the main pipeline.

[0008] By adopting the above technical solution, the gas sampling device includes a sampling pipeline and a sampling bottle connected to the sampling pipeline. The sampling pipeline is provided with a main pipeline, and a first pipeline and a second pipeline connected to the output end of the main pipeline. The first pipeline is connected to the sampling bottle, and the second pipeline is also connected to the sampling bottle. The second pipeline is provided with a pressurization structure, which is used at least to pressurize the gas sample from the main pipeline to increase the sampling pressure of the gas sample.

[0009] When sampling is performed using a gas sampling device, the current gas pressure of the gas sample can be used to determine the gas sample's quality. When the gas sample content is high and the current gas pressure is high, the gas sample can be sampled through the matching main pipeline and the first pipeline. This allows the gas sample to flow through the main pipeline into the first pipeline, and then through the first pipeline into the sampling bottle, thus completing the gas sample sampling process.

[0010] When the gas sample content is low and the current gas pressure of the gas sample is low, the gas sample can be sampled through the matching main pipeline and second pipeline. The gas sample can flow through the main pipeline to the second pipeline. The pressurization structure set in the second pipeline can pressurize the gas sample, so that the gas sample can flow through the pressurization structure and the second pipeline to the sampling bottle, thus realizing the gas sample sampling process.

[0011] Compared to the on-site sampling of gas samples using sampling bottles in related technologies, the gas sampling device of this application embodiment is applicable to gas samples with different pressures, and can pressurize gas samples with lower current pressures through a pressurization structure before sampling, thereby reducing the difficulty of obtaining gas samples and improving the sampling effect of gas samples.

[0012] In some possible implementations, the pressurization structure has a pressurization chamber that is connected to the second pipeline;

[0013] When the pressurization structure is in the first state, the pressurization chamber is connected to the main pipeline through the first part of the second pipeline, and the pressurization chamber collects gas samples from the main pipeline;

[0014] When the pressurization structure is in the second state, the pressurization chamber is connected to the sampling bottle through the second part of the second pipeline, and the pressurization chamber outputs a gas sample to the sampling bottle.

[0015] In some possible implementations, the pressurization chamber has an air inlet and an air outlet, and the second pipeline is provided with a first check valve and a second check valve;

[0016] The air inlet of the first one-way valve is connected to the second pipeline in the first part, and the air outlet of the first one-way valve is connected to the air inlet.

[0017] The inlet of the second one-way valve is connected to the outlet, and the outlet of the second one-way valve is connected to the second part of the second pipeline.

[0018] In some possible implementations, the pressurization structure includes a housing, inside which a piston is disposed, the piston separating the housing to form a first push chamber, a second push chamber, and the pressurization chamber;

[0019] When the piston moves along the first direction, the volume of the first pushing chamber increases, the volume of the second pushing chamber decreases, and the volume of the pressurizing chamber increases;

[0020] When the piston moves in the second direction, the volume of the first pushing chamber decreases, the volume of the second pushing chamber increases, and the volume of the pressurization chamber decreases.

[0021] In some possible implementations, the housing is provided with a partition plate that separates the housing into a first chamber and a second chamber;

[0022] The piston includes a first piston section, a second piston section, and a movable connecting rod connecting the first piston section and the second piston section, the movable connecting rod passing through the partition plate;

[0023] The first piston portion is located within the first chamber, and the surface of the first piston portion away from the movable connecting rod and the inner wall of the first chamber form the pressurization chamber;

[0024] The second piston portion is located within the second chamber. The surface of the second piston portion facing the movable connecting rod and the inner wall of the second chamber form the first pushing cavity, and the surface of the second piston portion away from the movable connecting rod and the inner wall of the second chamber form the second pushing cavity.

[0025] In some possible implementations, the pressurization structure includes a first directional valve;

[0026] The first end of the first reversing valve is connected to the main pipeline, the second end of the first reversing valve is connected to the first pushing chamber, and the third end of the first reversing valve is connected to the second pushing chamber.

[0027] When the booster structure is in the first state, the first end of the first reversing valve is connected to the second end of the first reversing valve, the piston moves along the first direction, and the volume of the booster chamber increases.

[0028] When the boosting structure is in the second state, the first end of the first reversing valve is connected to the third end of the first reversing valve, the piston moves in the second direction, and the volume of the boosting chamber decreases.

[0029] And / or, the pressurization structure includes a second directional valve;

[0030] The first end of the second reversing valve is connected to the main pipeline, the second end of the second reversing valve is connected to the second push chamber, and the third end of the first reversing valve is connected to the first push chamber;

[0031] When the boosting structure is in the first state, the first end of the second reversing valve is connected to the third end of the second reversing valve, the piston moves in the first direction, and the volume of the boosting chamber increases;

[0032] When the boosting structure is in the second state, the first end of the second reversing valve is connected to the second end of the second reversing valve, the piston moves in the second direction, and the volume of the boosting chamber decreases.

[0033] In some possible implementations, the main pipeline is provided with a cleaning pipeline, and the air inlet end of the cleaning pipeline is provided with an air delivery component.

[0034] The gas supply component is used at least to supply gas to the main pipeline, and to supply gas to the first pipeline and the second pipeline through the main pipeline.

[0035] In some possible implementations, the gas delivery component connects the first push chamber and the second push chamber via the cleaning pipeline, and the gas delivery component is used to drive the piston to move.

[0036] In some possible implementations, the first pipeline is provided with a control element, which is at least used to control the on / off state of the first pipeline.

[0037] In some possible implementations, the main pipeline is provided with an adsorption component;

[0038] The adsorption assembly includes a vacuum pump and an adsorption tower. The suction end of the vacuum pump is connected to the first pipeline, and the adsorption tower is connected to the outlet end of the vacuum pump.

[0039] The adsorption component is configured such that, before the gas sample is sampled through the sampling pipeline, the vacuum pump can create a negative pressure state in the main pipeline, the first pipeline, and the second pipeline;

[0040] After the gas sample is taken through the sampling pipeline, the vacuum pump can clean the main pipeline, the first pipeline, and the second pipeline. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0042] Figure 1 This is a schematic diagram of the gas sampling device provided in the embodiments of this application;

[0043] Figure 2 This is a schematic diagram of the structure of the cleaning pipeline provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the adsorption component provided in the embodiments of this application;

[0045] Figure 4 This application provides a schematic diagram of the structure of the first and second pipelines in an embodiment.

[0046] Figure 5 This is a schematic diagram intended to show the connection between the gas transmission component and the pressurization structure.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Sampling equipment;

[0049] 100. Main pipeline;

[0050] 110. Main control valve; 120. Cleaning pipeline; 121. Gas delivery component; 122. First solenoid valve; 123. Pressure reducing valve; 130. Adsorption assembly; 131. Adsorption tower; 132. Vacuum pump; 133. Second solenoid valve; 134. Vacuum sensor; 135. Third solenoid valve; 140. Sampling bottle; 141. Pressure sensor; 150. Rinse bottle;

[0051] 200. First pipeline;

[0052] 210. Control components;

[0053] 300. Second pipeline;

[0054] 310. First check valve; 320. Second check valve;

[0055] 400. Supercharged structure;

[0056] 410. Housing; 411. Pressurization chamber; 412. First push chamber; 413. Second push chamber; 420. Piston; 421. First piston section; 422. Movable connecting rod; 423. Second piston section; 430. Divider plate; 440. First directional valve; 450. Second directional valve.

[0057] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0058] In related technologies, with the increasing demands for environmental protection and equipment reliability in power systems, the application of gases such as C4F7N is continuously rising, making the accurate detection of their decomposition products increasingly important. Gas samples can be taken on-site using sampling bottles, and then analyzed using laboratory analytical equipment. For example, during on-site sampling using sampling bottles, a sampling device can also be used to assist in gas sampling. This sampling device needs to have functions such as vacuuming the sampling pipeline, gas washing, gas extraction, and tail gas treatment to ensure the quality of the gas sample collection process.

[0059] However, due to limitations such as the gas pressure of the gas sample, for example, when the gas content is low or the current gas pressure is low, the gas sample is difficult to flow smoothly through the sampling pipeline into the sampling bottle when sampling the gas sample on site through the sampling bottle, which makes it difficult to obtain the gas sample through the sampling bottle and results in poor sampling effect.

[0060] To address the aforementioned technical problems, this application provides a gas sampling device, including a sampling pipeline and a sampling bottle connected to the sampling pipeline. The sampling pipeline includes a main pipeline and a first pipeline and a second pipeline connected to the output end of the main pipeline. The first pipeline is connected to the sampling bottle, and the second pipeline is also connected to the sampling bottle. The second pipeline is equipped with a pressurization structure, which is used at least to pressurize the gas sample from the main pipeline to increase the sampling pressure of the gas sample.

[0061] When sampling is performed using a gas sampling device, the current gas pressure of the gas sample can be used to determine the gas sample's quality. When the gas sample content is high and the current gas pressure is high, the gas sample can be sampled through the matching main pipeline and the first pipeline. This allows the gas sample to flow through the main pipeline into the first pipeline, and then through the first pipeline into the sampling bottle, thus completing the gas sample sampling process.

[0062] When the gas sample content is low and the current gas pressure of the gas sample is low, the gas sample can be sampled through the matching main pipeline and second pipeline. The gas sample can flow through the main pipeline to the second pipeline. The pressurization structure set in the second pipeline can pressurize the gas sample, so that the gas sample can flow through the pressurization structure and the second pipeline to the sampling bottle, thus realizing the gas sample sampling process.

[0063] Compared to the on-site sampling of gas samples using sampling bottles in related technologies, the gas sampling device of this application embodiment is applicable to gas samples with different pressures, and can pressurize gas samples with lower current pressures through a pressurization structure before sampling, thereby reducing the difficulty of obtaining gas samples and improving the sampling effect of gas samples.

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0065] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0066] Reference Figure 1 The gas sampling device provided in this application includes a sampling pipeline and a sampling bottle 140 connected to the sampling pipeline. The sampling pipeline includes a main pipeline 100 and a first pipeline 200 and a second pipeline 300 connected to the output end of the main pipeline 100.

[0067] The input end of the main pipeline 100 can be used to obtain gas samples from the sampling device 10. The main pipeline 100 can be equipped with a main control valve 110 to control the on / off state of the main pipeline 100.

[0068] For example, the end of the first pipeline 200 away from the main pipeline 100 is connected to the sampling bottle 140 so that the main pipeline 100 can supply gas into the sampling bottle 140 through the first pipeline 200 to realize the sampling process of gas sample.

[0069] The end of the second pipeline 300 furthest from the main pipeline 100 is connected to the sampling bottle 140, so that the main pipeline 100 can supply gas into the sampling bottle 140 through the second pipeline 300. The second pipeline 300 is provided with a pressurizing structure 400, which is used at least to pressurize the gas sample from the main pipeline 100 to increase the sampling pressure of the gas sample.

[0070] When sampling is performed using a gas sampling device, the current gas pressure of the gas sample can be used to determine whether the gas sample content is high or the current gas pressure is high. When the gas sample content is high, the gas sample can be sampled through the main pipeline 100 and the first pipeline 200, so that the gas sample can flow through the main pipeline 100 to the first pipeline 200, and then through the first pipeline 200 to the sampling bottle 140, thereby realizing the gas sample sampling process.

[0071] When the gas sample content is low and the current gas pressure of the gas sample is low, the gas sample can be sampled through the matching main pipeline 100 and second pipeline 300, so that the gas sample can flow through the main pipeline 100 into the second pipeline 300. The pressurization structure 400 set in the second pipeline 300 can pressurize the gas sample, so that the gas sample can flow through the pressurization structure 400 and the second pipeline 300 into the sampling bottle 140, thereby realizing the gas sample sampling process.

[0072] Reference Figure 1 and Figure 2 In some possible implementations, the main pipeline 100 may be provided with a cleaning pipeline 120, which may be provided on a branch pipeline of the main pipeline 100, thereby enabling communication between the branch pipeline and the main pipeline 100.

[0073] For example, the air inlet of the cleaning line 120 may be provided with an air delivery component 121. The air delivery component 121 is used at least to deliver air to the main line 100, and through the main line 100 to the first line 200 and the second line 300.

[0074] A rinsing bottle 150 can be provided at the air outlet of the main pipeline 100. The rinsing bottle 150 is connected to the air outlet of the first pipeline 200 and the air outlet of the second pipeline 300 so that the gas in the main pipeline 100, the first pipeline 200 and the second pipeline 300 can flow into the rinsing bottle 150 so as to collect moisture through the rinsing bottle 150.

[0075] The cleaning pipeline 120 may be equipped with a first solenoid valve 122. The first solenoid valve 122 may be located at the outlet end of the gas supply component 121, so as to control the opening and closing of the cleaning pipeline 120, thereby enabling the first solenoid valve 122 to control the gas supply component 121 to supply gas into the main pipeline 100.

[0076] By adopting the above technical solution, when cleaning the sampling pipeline through the cleaning pipeline 120, the first solenoid valve 122 can be opened, so that the cleaning pipeline 120 is in a connected state. The gas supply component 121 can blow air into the main pipeline 100 through the cleaning pipeline 120, thereby supplying gas to the first pipeline 200 and the second pipeline 300 through the main pipeline 100, and allowing the gas to flow into the rinsing bottle 150, thereby realizing the cleaning process of the sampling pipeline.

[0077] Reference Figure 1 and Figure 3 In some possible implementations, the main pipeline 100 may be provided with an adsorption component 130, which may be provided on a branch pipeline of the main pipeline 100, thereby enabling communication between the branch pipeline and the main pipeline 100.

[0078] For example, the adsorption assembly 130 may include a vacuum pump 132 and an adsorption tower 131. The suction end of the vacuum pump 132 is connected to the first pipeline 200, and the adsorption tower 131 is connected to the outlet end of the vacuum pump 132, so that air can be drawn from the main pipeline 100 through the cooperating vacuum pump 132 and adsorption tower 131.

[0079] The adsorption assembly 130 is configured such that, before the gas sample is taken through the sampling pipeline, the vacuum pump 132 can create a negative pressure state in the main pipeline 100, the first pipeline 200 and the second pipeline 300, thereby drawing out the air in the sampling pipeline and allowing the air to pass through the adsorption tower 131. The air from the sampling pipeline is filtered and adsorbed by the adsorption tower 131, thereby creating negative pressure conditions for the sampling pipeline.

[0080] After a gas sample is taken through the sampling pipeline, the vacuum pump 132 can clean the main pipeline 100, the first pipeline 200, and the second pipeline 300. For example, the vacuum pump 132 can create a negative pressure state in the main pipeline 100, the first pipeline 200, and the second pipeline 300, thereby drawing out the air in the sampling pipeline and allowing the air to pass through the adsorption tower 131. The adsorption tower 131 filters and adsorbs the air from the sampling pipeline, thus achieving the function of cleaning the sampling management.

[0081] For example, a second solenoid valve 133 may be provided in the branch pipe where the adsorption component 130 is located. The second solenoid valve 133 may be located at the air inlet of the vacuum pump 132, thereby controlling the opening and closing of the branch pipe where the adsorption component 130 is located, so as to control the opening and closing of the air inlet of the vacuum pump 132 and the main pipe 100.

[0082] A vacuum sensor 134 can be installed in the branch pipe where the adsorption component 130 is located. The vacuum sensor 134 can be installed at the air inlet of the vacuum pump 132. For example, the vacuum sensor 134 can be installed between the second solenoid valve 133 and the vacuum pump 132, so that the current air pressure of the sampling pipeline can be obtained through the vacuum sensor 134.

[0083] A third solenoid valve 135 may be installed in the branch pipe where the adsorption component 130 is located. The third solenoid valve 135 may be installed between the air inlet of the vacuum pump 132 and the vacuum sensor 134 to control the on / off connection between the air inlet of the vacuum pump 132 and the vacuum sensor 134.

[0084] By adopting the above technical solution, after cleaning the sampling pipeline through the cleaning pipeline 120, the air in the sampling pipeline can be sucked out by the adsorption component 130. For example, the second solenoid valve 133 is opened, so that the vacuum pump 132 can form a negative pressure state in the main pipeline 100, the first pipeline 200 and the second pipeline 300. The vacuum sensor 134 obtains the current air pressure of the sampling pipeline. When the current air pressure of the sampling pipeline is lower than the set value, the vacuum pump 132 can be controlled to shut down, thereby maintaining a negative pressure state in the sampling pipeline.

[0085] Reference Figure 1 and Figure 4In some possible implementations, the first pipe 200 and the second pipe 300 can be connected in parallel on the main pipe 100. The air inlet end of the first pipe 200 can be connected to the air inlet end of the second pipe 300 and connected to the main pipe 100. The air outlet ends of the first pipe 200 and the second pipe 300 can be located on the main pipe 100, so that they can be connected to the sampling bottle 140 through a portion of the main pipe 100.

[0086] For example, the first pipeline 200 may be provided with a control element 210, which is at least used to control the opening and closing of the first pipeline 200 so that the sampling pipeline can pass through the main pipeline 100 and cooperate with the first pipeline 200 and the second pipeline 300 respectively, thereby realizing the gas sample sampling process.

[0087] It is easy to understand that the gas flow path in the sampling pipeline can be determined based on the gas sample content and the current gas pressure. For example, when the gas sample content is high and the current gas pressure of the gas sample is high, the control element 210 can be turned on and the first pipeline 200 can be connected. This allows the gas sample to be sampled through the cooperating main pipeline 100 and the first pipeline 200, so that the gas sample can flow through the main pipeline 100 into the first pipeline 200, thereby realizing the gas sample sampling process.

[0088] When the gas sample content is low and the current gas pressure of the gas sample is low, the gas sample can be sampled through the matching main pipeline 100 and second pipeline 300. By keeping the control element 210 in the closed state and the second pipeline 300 in the open state, the gas sample can flow through the main pipeline 100 into the second pipeline 300. The pressurization structure 400 set in the second pipeline 300 can pressurize the gas sample, so that the gas sample can flow through the pressurization structure 400 and the second pipeline 300 into the sampling bottle 140, thus realizing the gas sample sampling process.

[0089] Reference Figure 1 and Figure 4 In some possible implementations, the pressurizing structure 400 has a pressurizing chamber 411, which is connected to the second pipeline 300. The pressurizing chamber 411 can acquire gas samples from the second pipeline 300 and can output pressurized gas samples into the sampling bottle 140 through the second pipeline 300.

[0090] For example, the booster chamber 411 is disposed in the second pipeline 300. The portion of the second pipeline 300 located between the main pipeline 100 and the booster chamber 411 (i.e., the portion connected to the air inlet end of the booster chamber 411) can be configured as a first portion of the second pipeline 300. The portion of the second pipeline 300 located away from the main pipeline 100 (i.e., the portion connected to the air outlet end of the booster chamber 411) can be configured as a second portion of the second pipeline 300.

[0091] When the pressurization structure 400 is in the first state, the pressurization chamber 411 can be connected to the main pipeline 100 through the first part of the second pipeline 300, and the pressurization chamber 411 collects gas samples from the main pipeline 100.

[0092] When the pressurization structure 400 is in the second state, the pressurization chamber 411 can be connected to the sampling bottle 140 through the second part of the second pipeline 300, and the pressurization chamber 411 outputs gas sample to the sampling bottle 140.

[0093] In other words, when pressurizing the gas sample through the pressurizing structure 400, the pressurizing structure 400 can be first controlled to be in a first state, allowing the gas sample in the main pipeline 100 to enter the pressurizing chamber 411 through the first part of the second pipeline 300. Then, the pressurizing structure 400 is controlled to be in a second state, so that after pressurizing the gas sample in the pressurizing chamber 411, the gas sample is output to the sampling bottle 140 through the second part of the second pipeline 300, thereby increasing the output gas pressure of the gas sample.

[0094] For example, the booster chamber 411 may have an air inlet and an air outlet. The air inlet of the booster chamber 411 is connected to the first part of the second pipeline 300, and the air outlet of the booster chamber 411 is connected to the second part of the second pipeline 300.

[0095] The second pipeline 300 may be equipped with a first one-way valve 310. The inlet end of the first one-way valve 310 is connected to the first part of the second pipeline 300, and the outlet end of the first one-way valve 310 is connected to the inlet, so that the gas from the main pipeline 100 can be unidirectionally guided to the inlet of the pressurization chamber 411 through the first part of the second pipeline 300.

[0096] The second pipeline 300 may be equipped with a second one-way valve 320. The inlet end of the second one-way valve 320 is connected to the outlet end, and the outlet end of the second one-way valve 320 is connected to the second part of the second pipeline 300, so that the gas sample from the pressurization chamber 411 can be unidirectionally guided to the sampling bottle 140 through the second part of the second pipeline 300.

[0097] Reference Figure 1 and Figure 4In some possible implementations, the pressurization structure 400 includes a housing 410. A piston 420 is disposed inside the housing 410, and the piston 420 is movable relative to the housing 410 to change the volume of the pressurization chamber 411.

[0098] For example, piston 420 can divide housing 410 to form a first push chamber 412, a second push chamber 413, and a pressurization chamber 411. When piston 420 moves relative to housing 410, piston 420 can change the volume of the first push chamber 412 and the second push chamber 413, thereby changing the volume of pressurization chamber 411.

[0099] For example, when the piston 420 moves in the first direction, the volume of the first pushing chamber 412 increases, the volume of the second pushing chamber 413 decreases, and the volume of the pressurizing chamber 411 increases. When the piston 420 moves in the second direction, the volume of the first pushing chamber 412 decreases, the volume of the second pushing chamber 413 increases, and the volume of the pressurizing chamber 411 decreases.

[0100] For example, the housing 410 may be provided with a partition plate 430, which is disposed on the inner side of the housing 410 and can separate the housing 410 to form a first chamber and a second chamber.

[0101] The piston 420 may include a first piston portion 421, a second piston portion 423, and a movable connecting rod 422 connecting the first piston portion 421 and the second piston portion 423. The movable connecting rod 422 passes through the partition plate 430, so that the first piston portion 421 and the second piston portion 423 can be located on both sides of the partition plate 430 respectively.

[0102] The first piston part 421 can be located in the first chamber. The surface of the first piston part 421 away from the movable connecting rod 422 and the inner wall of the first chamber together form a pressurizing chamber 411. The first piston part 421 can be movably disposed in the first chamber to change the volume of the pressurizing chamber 411.

[0103] The second piston portion 423 may be located in the second chamber. The surface of the second piston portion 423 facing the movable connecting rod 422 and the inner wall of the second chamber together form the first pushing chamber 412, and the surface of the second piston portion 423 away from the movable connecting rod 422 and the inner wall of the second chamber together form the second pushing chamber 413.

[0104] By adopting the above technical solution, when the booster structure 400 is in the first state, the piston 420 can move in the housing 410 along the first direction (i.e., the X direction in the figure). The first piston part 421 moves towards the second chamber in the first chamber, and the second piston part 423 moves away from the first chamber in the second chamber, so that the volume of the first push chamber 412 increases and the volume of the second push chamber 413 decreases, thereby increasing the volume of the booster chamber 411.

[0105] When the booster structure 400 is in the second state, the piston 420 can move within the housing 410 along a second direction (i.e., the Y direction in the figure), which can be opposite to the first direction. The first piston portion 421 moves away from the second chamber within the first chamber, and the second piston portion 423 moves towards the first chamber within the second chamber, causing the volume of the first push chamber 412 to decrease and the volume of the second push chamber 413 to increase, thereby reducing the volume of the booster chamber 411.

[0106] Reference Figure 1 , Figure 4 and Figure 5 In some possible implementations, the booster structure 400 may include a first reversing valve 440 through which driving gas can flow to the booster structure 400, thereby enabling the state of the booster structure 400 to be controlled by the first reversing valve 440. The driving gas may come from the main pipeline 100 and can flow to the first end of the first reversing valve 440.

[0107] For example, the first end of the first reversing valve 440 is connected to the main pipeline 100, the second end of the first reversing valve 440 is connected to the first push chamber 412, and the third end of the first reversing valve 440 is connected to the second push chamber 413.

[0108] When the booster structure 400 is in the first state, the first end of the first reversing valve 440 is connected to the second end of the first reversing valve 440, so that the driving gas can flow through the main pipeline 100 to the first push chamber 412, thereby driving the piston 420 to move in the first direction, so that the volume of the booster chamber 411 increases.

[0109] When the booster structure 400 is in the second state, the first end of the first reversing valve 440 is connected to the third end of the first reversing valve 440, so that the driving gas can flow through the main pipeline 100 to the second push chamber 413, thereby driving the piston 420 to move in the second direction, so that the volume of the booster chamber 411 is reduced.

[0110] And / or, the booster structure 400 may include a second reversing valve 450 through which driving gas can flow to the booster structure 400, thereby enabling the state of the booster structure 400 to be controlled by the second reversing valve 450. The driving gas may come from the main pipeline 100 and can flow to the first end of the second reversing valve 450.

[0111] For example, the first end of the second reversing valve 450 is connected to the main pipeline 100, the second end of the second reversing valve 450 is connected to the second push chamber 413, and the third end of the first reversing valve 440 is connected to the first push chamber 412.

[0112] When the booster structure 400 is in the first state, the first end of the second reversing valve 450 is connected to the third end of the second reversing valve 450, so that the driving gas can flow through the main pipeline 100 to the first push chamber 412, thereby driving the piston 420 to move in the first direction, so that the volume of the booster chamber 411 increases.

[0113] When the booster structure 400 is in the second state, the first end of the second reversing valve 450 is connected to the second end of the second reversing valve 450, so that the driving gas can flow through the main pipeline 100 to the first push chamber 412, thereby driving the piston 420 to move in the first direction, so that the volume of the booster chamber 411 increases.

[0114] Reference Figure 1 , Figure 4 and Figure 5 In some possible implementations, the gas delivery component 121 connects to the first push chamber 412 and the second push chamber 413 via a cleaning conduit 120, thereby enabling the delivery of driving gas to the first push chamber 412 and the second push chamber 413. The gas delivery component 121 can be used to move the piston 420, thereby enabling the control of the volume of the pressurization chamber 411.

[0115] For example, the outlet end of the gas delivery component 121 can be connected to the first end of the first reversing valve 440 and the second end of the second reversing valve 450. The outlet end of the gas delivery component 121 can be provided with a pressure reducing valve 123, thereby reducing the gas pressure delivered by the gas delivery component 121.

[0116] Reference Figure 1 In some possible implementations, a pressure sensor 141 may be provided at the air inlet of the sampling bottle 140. The pressure sensor 141 can obtain the current air pressure at the sampling bottle 140, so as to determine whether the sampling process is completed based on the current air pressure of the sampling bottle 140.

[0117] In summary, the gas sampling device includes a sampling pipeline and a sampling bottle 140 connected to the sampling pipeline. The sampling pipeline is provided with a main pipeline 100, and a first pipeline 200 and a second pipeline 300 connected to the output end of the main pipeline 100. The first pipeline 200 is connected to the sampling bottle 140, and the second pipeline 300 is connected to the sampling bottle 140. The second pipeline 300 is provided with a pressurization structure 400, which is used at least to pressurize the gas sample from the main pipeline 100 to increase the sampling pressure of the gas sample.

[0118] When sampling is performed using a gas sampling device, the sampling pipeline can be cleaned first through the cleaning pipeline 120. The first solenoid valve 122 can be opened to make the cleaning pipeline 120 connected. The gas delivery component 121 can blow air into the main pipeline 100 through the cleaning pipeline 120, thereby delivering gas to the first pipeline 200 and the second pipeline 300 through the main pipeline 100, and allowing the gas to flow into the rinsing bottle 150, thus realizing the cleaning process of the sampling pipeline.

[0119] After cleaning the sampling pipeline through the cleaning pipeline 120, the vacuum pump 132 is controlled to create a negative pressure state in the main pipeline 100, the first pipeline 200 and the second pipeline 300, thereby drawing out the air in the sampling pipeline and allowing the air to pass through the adsorption tower 131. The adsorption tower 131 filters and adsorbs the air from the sampling pipeline, thereby creating negative pressure conditions for the sampling pipeline.

[0120] Then, the current gas pressure of the gas sample can be used to determine whether the gas sample content is high or the current gas pressure is high. When the gas sample content is high, the gas sample can be sampled through the main pipeline 100 and the first pipeline 200, so that the gas sample can flow through the main pipeline 100 to the first pipeline 200, and then through the first pipeline 200 to the sampling bottle 140, thus realizing the gas sample sampling process.

[0121] When the gas sample content is low and the current gas pressure of the gas sample is low, the gas sample can be sampled through the matching main pipeline 100 and second pipeline 300, so that the gas sample can flow through the main pipeline 100 into the second pipeline 300. The pressurization structure 400 set in the second pipeline 300 can pressurize the gas sample, so that the gas sample can flow through the pressurization structure 400 and the second pipeline 300 into the sampling bottle 140, thus realizing the gas sample sampling process.

[0122] After a gas sample is taken through the sampling pipeline, the vacuum pump 132 can clean the main pipeline 100, the first pipeline 200, and the second pipeline 300. For example, the vacuum pump 132 can create a negative pressure state in the main pipeline 100, the first pipeline 200, and the second pipeline 300, thereby drawing out the air in the sampling pipeline and allowing the air to pass through the adsorption tower 131. The adsorption tower 131 filters and adsorbs the air from the sampling pipeline, thus achieving the function of cleaning the sampling management.

[0123] Compared to the method of on-site sampling of gas samples using sampling bottle 140 in related technologies, the gas sampling device of this application embodiment is applicable to gas samples with different pressures, and can pressurize gas samples with lower current pressure through pressurization structure 400 before sampling, thereby reducing the difficulty of obtaining gas samples and improving the sampling effect of gas samples.

[0124] The gas sampling device of this application embodiment, through its closed-loop pneumatic pressurization cycle design and zero-emission exhaust gas treatment, prevents the leakage of C4F7N mixed gas and its decomposition products into the atmosphere. Compared to the potential trace leaks in sampling devices of related technologies, this reduces the risk of greenhouse gas emissions and meets the low-carbon requirements for power equipment testing.

[0125] Furthermore, during the sampling process using the gas sampling device, the sampling pipeline can be completely isolated from the outside air, preventing impurities in the environment from entering the sampling pipeline and also preventing the sampled gas from polluting the external environment.

[0126] The gas sampling device of this application embodiment can integrate pipeline vacuuming and drying pretreatment functions to ensure that the concentration of each component in the gas sample is consistent with the actual concentration inside the equipment, thus ensuring the accuracy of the detection of parameters related to gas insulation performance and providing reliable data support for equipment fault diagnosis.

[0127] Furthermore, the gas sampling device integrates functions such as vacuuming the sampling pipeline, pressure boosting output, gas washing, gas sampling, and exhaust gas treatment into one unit, reducing on-site equipment connection steps, lowering operational complexity, and solving the problem of multiple equipment combinations and cumbersome operation required in related technologies. This improves the portability and on-site applicability of the device.

[0128] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0129] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0130] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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 invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas sampling device, characterized in that, Includes a sampling pipeline and a sampling bottle connected to the sampling pipeline; The sampling pipeline includes a main pipeline, and a first pipeline and a second pipeline connected to the output end of the main pipeline, wherein the first pipeline is connected to the sampling bottle; The second pipeline is connected to the sampling bottle; The second pipeline is equipped with a pressurization structure, which is used at least to pressurize the gas sample from the main pipeline.

2. The gas sampling device according to claim 1, characterized in that, The pressurization structure has a pressurization chamber, which is connected to the second pipeline; When the pressurization structure is in the first state, the pressurization chamber is connected to the main pipeline through the first part of the second pipeline, and the pressurization chamber collects gas samples from the main pipeline; When the pressurization structure is in the second state, the pressurization chamber is connected to the sampling bottle through the second part of the second pipeline, and the pressurization chamber outputs a gas sample to the sampling bottle.

3. The gas sampling device according to claim 2, characterized in that, The pressurization chamber has an air inlet and an air outlet, and the second pipeline is equipped with a first check valve and a second check valve. The air inlet of the first one-way valve is connected to the second pipeline in the first part, and the air outlet of the first one-way valve is connected to the air inlet. The inlet of the second one-way valve is connected to the outlet, and the outlet of the second one-way valve is connected to the second part of the second pipeline.

4. The gas sampling device according to claim 2, characterized in that, The pressurization structure includes a housing, and a piston is disposed inside the housing. The piston separates the housing to form a first pushing chamber, a second pushing chamber, and the pressurization chamber. When the piston moves along the first direction, the volume of the first pushing chamber increases, the volume of the second pushing chamber decreases, and the volume of the pressurizing chamber increases; When the piston moves in the second direction, the volume of the first pushing chamber decreases, the volume of the second pushing chamber increases, and the volume of the pressurization chamber decreases.

5. The gas sampling device according to claim 4, characterized in that, The housing is provided with a partition plate, which divides the housing into a first chamber and a second chamber; The piston includes a first piston section, a second piston section, and a movable connecting rod connecting the first piston section and the second piston section, the movable connecting rod passing through the partition plate; The first piston portion is located within the first chamber, and the surface of the first piston portion away from the movable connecting rod and the inner wall of the first chamber form the pressurization chamber; The second piston portion is located within the second chamber. The surface of the second piston portion facing the movable connecting rod and the inner wall of the second chamber form the first pushing cavity, and the surface of the second piston portion away from the movable connecting rod and the inner wall of the second chamber form the second pushing cavity.

6. The gas sampling device according to claim 4, characterized in that, The pressurization structure includes a first reversing valve; The first end of the first reversing valve is connected to the main pipeline, the second end of the first reversing valve is connected to the first pushing chamber, and the third end of the first reversing valve is connected to the second pushing chamber. When the booster structure is in the first state, the first end of the first reversing valve is connected to the second end of the first reversing valve, the piston moves along the first direction, and the volume of the booster chamber increases. When the boosting structure is in the second state, the first end of the first reversing valve is connected to the third end of the first reversing valve, the piston moves in the second direction, and the volume of the boosting chamber decreases. And / or, the pressurization structure includes a second directional valve; The first end of the second reversing valve is connected to the main pipeline, the second end of the second reversing valve is connected to the second push chamber, and the third end of the first reversing valve is connected to the first push chamber; When the boosting structure is in the first state, the first end of the second reversing valve is connected to the third end of the second reversing valve, the piston moves in the first direction, and the volume of the boosting chamber increases; When the boosting structure is in the second state, the first end of the second reversing valve is connected to the second end of the second reversing valve, the piston moves in the second direction, and the volume of the boosting chamber decreases.

7. The gas sampling device according to claim 4, characterized in that, The main pipeline is equipped with a cleaning pipeline, and the air inlet end of the cleaning pipeline is equipped with an air delivery component. The gas supply component is used at least to supply gas to the main pipeline, and to supply gas to the first pipeline and the second pipeline through the main pipeline.

8. The gas sampling device according to claim 7, characterized in that, The gas supply component connects the first push chamber and the second push chamber through the cleaning pipeline, and the gas supply component is used to drive the piston to move.

9. The gas sampling device according to any one of claims 1-8, characterized in that, The first pipeline is equipped with a control component, which is used to control the on / off state of the first pipeline.

10. The gas sampling device according to any one of claims 1-8, characterized in that, The main pipeline is equipped with an adsorption component; The adsorption assembly includes a vacuum pump and an adsorption tower. The suction end of the vacuum pump is connected to the first pipeline, and the adsorption tower is connected to the outlet end of the vacuum pump. The adsorption component is configured such that, before the gas sample is sampled through the sampling pipeline, the vacuum pump can create a negative pressure state in the main pipeline, the first pipeline, and the second pipeline; After the gas sample is taken through the sampling pipeline, the vacuum pump can clean the main pipeline, the first pipeline, and the second pipeline.

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