Gas collection and detection system and method

Abstract

The invention provides a gas collection and detection system and method.The gas collection and detection system comprises degassing equipment, the degassing equipment comprises a first cavity and a second cavity, a degassing assembly is arranged in the first cavity and used for separating gas dissolved in transformer oil, and the volume of the first cavity is variable; the second chamber is communicated with the first chamber, and the second chamber is used for collecting gas separated by the degassing assembly; wherein the volume of the first chamber is gradually reduced when the gas is conveyed into the second chamber from the first chamber. When the gas is conveyed into the second chamber from the first chamber, the volume of the first chamber can be reduced along with the continuous flowing of the gas out of the first chamber, so that the air pressure in the first chamber can be kept within a proper range, the difficulty of outputting the gas to the first chamber can be reduced, the collection rate of the gas can be improved, and the service life of the gas is prolonged. Therefore, the collection concentration of the gas is improved, and the detection precision of the gas is improved.

Description

Technical Field

[0001] The present application belongs to the field of gas detection technology, and more specifically, to a gas collection and detection system and method. Background Art

[0002] A transformer is an electrical device that uses the principle of electromagnetic induction to change AC voltage. It includes an iron core and windings. The iron core and windings are completely immersed in transformer oil. The transformer oil fills the gap between the iron core and the windings to ensure good insulation between the windings, between the windings and the iron core, and between the windings and the oil tank wall. In addition, the transformer oil flows around the windings, can absorb the heat generated by the windings, and transfer the heat to the transformer's oil tank wall and radiator to achieve heat dissipation function.

[0003] However, some of the gas in the environment will dissolve in the transformer oil. When the gas content in the transformer oil is too high, the insulation strength of the transformer oil will be significantly reduced, increasing the risk of partial discharge or breakdown of the transformer. Therefore, it is necessary to extract and detect the gas dissolved in the transformer oil. In the related art, a degassing device can be used to separate the gas dissolved in the transformer oil, and the separated gas can be extracted and collected using a negative pressure vacuum method. However, when the air pressure in the degassing device is low, this collection method is difficult to extract the gas from the degassing device, resulting in a low gas collection rate. In this way, the gas cannot be fully detected, thereby affecting the accuracy of the detection. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a gas collection and detection system and method to solve the technical problem in the prior art that when the gas pressure in the degassing equipment is low, it is difficult to extract the gas from the degassing equipment, resulting in a low gas collection rate.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a gas collection and detection system is provided, comprising a degassing device, wherein the degassing device comprises:

[0007] A first chamber, wherein a degassing component is disposed in the first chamber, the degassing component is used to separate gas dissolved in the transformer oil, and the volume of the first chamber is variable;

[0008] a second chamber, the second chamber being in communication with the first chamber, and the second chamber being used to collect the gas separated by the degassing assembly;

[0009] In the stage where the gas is transported from the first chamber to the second chamber, the volume of the first chamber gradually decreases.

[0010] In some embodiments, the volume of the second chamber is variable, and the volume of the second chamber is negatively correlated with the volume of the first chamber.

[0011] In some embodiments, the degassing device also includes a shell provided with a accommodating chamber, a movable partition plate is provided in the accommodating chamber, the partition plate divides the accommodating chamber into the first chamber and the second chamber, the inner wall of the first chamber is provided with a first opening, and the inner wall of the second chamber is provided with a second opening connected to the first opening.

[0012] In some embodiments, the degassing device further comprises a driving member, the partition plate is provided with a connecting shaft, and the driving member is connected to the connecting shaft to drive the partition plate to move.

[0013] In some embodiments, the partition plate is slidably disposed in the accommodating cavity along the extending direction of the connecting shaft, and the connecting shaft penetrates the partition plate along the sliding direction of the partition plate and is threadedly connected to the partition plate;

[0014] The end of the connecting shaft away from the driving member is connected to the degassing assembly;

[0015] The driving member is used to drive the connecting shaft to rotate around its axis to drive the partition plate to move and simultaneously drive the degassing assembly to rotate.

[0016] In some embodiments, the second chamber is located at an upper portion of the partition plate, and the first chamber is located at a lower portion of the partition plate.

[0017] In some embodiments, the degassing assembly includes a plurality of stirring blades, and the stirring blades are movably disposed in the first chamber to separate gas in the transformer oil.

[0018] In some embodiments, the degassing device further includes a pumping element, and the pumping element is used to pump the gas in the first chamber to the second chamber.

[0019] In some embodiments, the vacuum element is provided with a third chamber, the first chamber and the second chamber are both connected to the third chamber, a first valve is provided between the third chamber and the first chamber, and a second valve is provided between the third chamber and the second chamber.

[0020] In some embodiments, the gas collection and detection system also includes a detection device for detecting gas, and the vacuum component is also used to pump the gas in the second chamber to the detection device. A third valve is provided between the third chamber and the detection device.

[0021] In a second aspect, a gas collection and detection method is provided, comprising the following steps:

[0022] Placing transformer oil in the first chamber;

[0023] separating gas dissolved in the transformer oil;

[0024] The gas is input from the first chamber to a second chamber communicating with the first chamber, and during the process of the gas being transferred from the first chamber to the second chamber, the volume of the first chamber is gradually reduced.

[0025] In some embodiments, during the process of gas being transferred from the first chamber to the second chamber, the volume of the second chamber gradually increases.

[0026] In some embodiments, the step of inputting gas from the first chamber to a second chamber in communication with the first chamber comprises at least:

[0027] The third chamber is isolated from the second chamber, the third chamber is connected to the first chamber, and then the gas in the first chamber is input into the third chamber;

[0028] The third chamber is isolated from the first chamber, the third chamber is connected to the second chamber, and then the gas in the third chamber is input into the second chamber.

[0029] In some embodiments, during the transfer of gas from the first chamber to the second chamber,

[0030] When the first chamber is connected to the second chamber, the gas in the first chamber can be input into the second chamber, and the volume of the first chamber remains unchanged.

[0031] When the first chamber is separated from the second chamber, no gas flows between the first chamber and the second chamber, and the volume of the first chamber decreases.

[0032] In some embodiments, during the process of gas transfer from the first chamber to the second chamber, the first chamber and the second chamber are alternately switched between a connected state and a disconnected state until the volume of the first chamber is reduced to a preset value.

[0033] In some embodiments, after the gas is transferred from the first chamber to the second chamber, the method further comprises:

[0034] The first chamber is isolated from the second chamber, and the gas in the second chamber is input to a detection device connected to the second chamber. During the process of transferring the gas in the second chamber to the detection device, the volume of the second chamber is gradually reduced.

[0035] In some embodiments, the step of inputting the gas in the second chamber to a detection device connected to the second chamber comprises at least:

[0036] The third chamber is isolated from the detection device, the third chamber is connected to the second chamber, and then the gas in the second chamber is input into the third chamber;

[0037] The third chamber is isolated from the second chamber, the third chamber is connected to the detection device, and then the gas in the third chamber is input into the detection device.

[0038] In some embodiments, during the transfer of gas from the second chamber to the detection device,

[0039] When the second chamber is connected to the detection device, the gas in the second chamber can be input into the detection device, and the volume of the second chamber remains unchanged.

[0040] When the second chamber is separated from the detection device, there is no gas flow between the second chamber and the detection device, and the volume of the second chamber is reduced.

[0041] In some embodiments, during the process of gas being transferred from the second chamber to the detection device, the second chamber and the detection device are alternately switched between a connected state and a disconnected state until the volume of the second chamber is reduced to a preset value.

[0042] The beneficial effect of the gas collection and detection system provided in the present application is that the first chamber is set to have a variable volume, and in the stage of transporting the gas from the first chamber to the second chamber, the volume of the first chamber gradually decreases. Then, in this stage, as the gas continues to flow out of the first chamber, the volume of the first chamber can be reduced to keep the gas pressure in the first chamber within an appropriate range. In this way, the difficulty of outputting the gas from the first chamber can be reduced, which helps to improve the gas collection efficiency, thereby increasing the gas collection concentration and improving the detection accuracy of the collected gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A schematic diagram of a gas collection and detection system provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of a degassing device provided in an embodiment of the present application;

[0046] Figure 3 for Figure 2 A schematic cross-sectional view of a degassing device is shown;

[0047] Figure 4 A schematic diagram of a partition plate and a connecting shaft of a degassing device provided in an embodiment of the present application;

[0048] Figure 5 A flow chart of a gas collection and detection method provided in one embodiment of the present application;

[0049] Figure 6 A schematic diagram of a flow chart of a gas collection and detection method provided in another embodiment of the present application;

[0050] Figure 7 A schematic flow chart of a gas collection and detection method provided in yet another embodiment of the present application;

[0051] Figure 8 A schematic diagram of a flow chart of a gas collection and detection method provided in yet another embodiment of the present application;

[0052] Fig. 9 A schematic diagram of a flow chart of a gas collection and detection method provided in yet another embodiment of the present application;

[0053] Fig.10 A flow chart of a gas collection and detection method provided in yet another embodiment of the present application.

[0054] Among them, the reference numerals in the figure are:

[0055] 1. Degassing equipment; 11. Degassing assembly; 111. Stirring blade; 12. Shell; 121. First chamber; 1211. First opening; 1212. Oil port; 122. Second chamber; 1221. Second opening; 13. Partition plate; 14. Driving member; 15. Connecting shaft; 151. Protrusion; 16. Limit rod; 171. First sealing ring; 172. Second sealing ring; 173. Third sealing ring; 2. First valve; 3. Second valve; 4. Third valve; 5. Vacuum member; 6. Detection equipment; 7. Air retention pool; 8. Connecting pipe. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following Figures 1 to 10 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0058] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, "multiple groups" means two or more groups, "multiple pieces" means two or more pieces, and "several" means one or more, unless otherwise clearly and specifically defined.

[0060] A transformer is an electrical device that uses the principle of electromagnetic induction to change AC voltage. It can be used in substations, power plants and other places to achieve the transmission, distribution and conversion of electrical energy and provide suitable power supply voltage for various electrical equipment.

[0061] The transformer includes an iron core and windings. The iron core is the magnetic circuit part of the transformer, and its main function is to provide a magnetic path so that energy can be transferred between the primary winding and the secondary winding through electromagnetic induction. The winding is the circuit part of the transformer, which is divided into a primary winding and a secondary winding. The primary winding receives input electrical energy, and the secondary winding outputs converted electrical energy. Among them, the iron core and the winding are completely immersed in transformer oil, which is insulating oil. The transformer oil fills the gap between the iron core and the winding to ensure good insulation performance between the windings, between the windings and the iron core, and between the windings and the oil tank wall. In addition, the transformer oil flows around the windings, can absorb the heat generated by the windings, and transfer the heat to the oil tank wall and radiator of the transformer to achieve the heat dissipation function.

[0062] However, during the production, transportation or operation process, some gases in the environment will dissolve in the transformer oil. When the gas content in the transformer oil is too high, the insulation strength of the transformer oil will be significantly reduced. For example, gases such as hydrogen and oxygen are easily ionized under the action of the electric field to form a conductive channel, thereby reducing the insulation performance of the transformer oil and increasing the risk of local discharge or breakdown of the transformer. In addition, certain gases dissolved in the transformer oil, such as carbon monoxide and carbon dioxide, are products of thermal decomposition of insulating materials. Their presence indicates that there may be overheating or local faults inside the transformer, which will further accelerate the damage of the insulating material.

[0063] Therefore, in actual operation, it is necessary to extract and detect the gas dissolved in the transformer oil in the transformer, so as to determine whether it is necessary to replace the transformer oil with new one. In the related technology, a degassing device can be used to separate the gas dissolved in the transformer oil, and after the gas is separated, the separated gas is extracted and collected by a negative pressure vacuum method, and then the collected gas is detected by a detection device; however, when the gas content separated by the degassing device is small, the air pressure in the degassing device is low, and it is difficult to effectively extract the residual gas from the degassing device by a negative pressure vacuum method, resulting in a low gas collection rate, which causes the concentration of the collected gas to be inconsistent with the actual concentration, making it difficult to fully detect the gas, and it is difficult to improve the detection efficiency and accuracy.

[0064] Based on this, an embodiment of the present application provides a gas collection and detection system and method to solve the above problems.

[0065] The present application embodiment first provides a gas collection and detection system, referring to Figure 1 to Figure 2 The gas collection and detection system includes a degassing device 1, which includes a first chamber 121 and a second chamber 122. A degassing component 11 is arranged in the first chamber 121, and the degassing component 11 is used to separate the gas dissolved in the transformer oil. The volume of the first chamber 121 is variable; the second chamber 122 is connected to the first chamber 121, and the second chamber 122 is used to collect the gas separated by the degassing component 11; wherein, during the stage of the gas being transported from the first chamber 121 to the second chamber 122, the volume of the first chamber 121 gradually decreases.

[0066] It should be noted that the gas dissolved in the transformer oil mostly exists in the form of bubbles, and the degassing component 11 can separate the gas dissolved in the transformer oil by stirring, centrifugation or ultrasound.

[0067] It should be noted that, during the stage when the gas is transported from the first chamber 121 to the second chamber 122, the volume of the first chamber 121 gradually decreases, which may mean that during this stage, the volume of the first chamber 121 continues to decrease, or that during this stage, the volume of the first chamber 121 first decreases to a certain value, so that the volume of the first chamber 121 remains at this value for a period of time, and then decreases to another value, and the volume of the first chamber 121 remains at this value for a period of time, and then continues to decrease the volume of the first chamber 121, and repeats this process until the volume of the first chamber 121 decreases to a preset value, wherein the preset value may refer to a preset minimum volume value of the first chamber 121, which may be greater than zero. In this way, the first chamber 121 may retain a certain volume to accommodate transformer oil to ensure that the transformer oil does not overflow from the first chamber 121, thereby reducing the influence of the transformer oil on the gas detection accuracy.

[0068] It should be noted that the gradual reduction of the volume of the first chamber 121 can be a specific continuous implementation method; it can also be a specific discrete implementation method. For example, a part of the first chamber 121 can be extracted by negative pressure and transferred to the second chamber 122 (the volume of the second chamber 122 can increase or remain unchanged, and the volume change of the second chamber 122 does not affect its storage effect); then the volume of the first chamber 121 is reduced (the change in volume size may not be synchronous with the exhaust process), and then the remaining part of the first chamber 121 is extracted by negative pressure; the volume change of the second chamber 122 does not affect the storage effect, but if the gas collected in the second chamber 122 is sufficient, reducing the volume of the second chamber 122 can pressurize the second chamber 122, so that there is a positive pressure in the second chamber 122, and the second chamber 122 itself can act as a pump body, so that the gas in the second chamber 122 can flow to the outside (such as the detection equipment) under the action of pressure.

[0069] It should be noted that, as the volume of the first chamber 121 gradually decreases, the gas in the first chamber 121 will be compressed. At this time, the gas in the first chamber 121 can escape from the first chamber 121 and enter the second chamber 122; of course, a vacuum component can be provided between the first chamber 121 and the second chamber 122, and the gas in the first chamber 121 flows into the second chamber 122 through the vacuum component; in addition, a vacuum component can be provided in the second chamber 122, so that the air pressure in the second chamber 122 is lower than that in the first chamber 121, so that the gas can flow into the second chamber 122.

[0070] It should be noted that the degassing device 1 is a device arranged outside the transformer, that is, the degassing device 1 and the transformer are two independent devices respectively, and the first chamber 121 and the second chamber 122 are both located outside the transformer. When it is necessary to detect the gas dissolved in the transformer oil, the transformer oil in the transformer can be first pumped into the first chamber 121 of the degassing device 1, and then the degassing device 1 is used to separate and collect the gas dissolved in the transformer.

[0071] The first chamber 121 is set to have a variable volume, and in the stage when the gas is transported from the first chamber 121 to the second chamber 122, the volume of the first chamber 121 gradually decreases. Then, in this stage, as the gas continues to flow out of the first chamber 121, the volume of the first chamber 121 can be reduced to keep the gas pressure in the first chamber 121 within a suitable range. In this way, the difficulty of outputting the gas from the first chamber 121 can be reduced, which helps to improve the gas collection efficiency, thereby increasing the gas collection concentration and improving the detection accuracy of the collected gas.

[0072] In some embodiments, the volume of the second chamber 122 is variable, and the volume of the second chamber 122 is negatively correlated with the volume of the first chamber 121. When the volume of the second chamber 122 is negatively correlated with the volume of the first chamber 121, the volume of the first chamber 121 gradually decreases and the volume of the second chamber 122 gradually increases during the stage of transporting the gas from the first chamber 121 to the second chamber 122. As the gas continues to flow into the second chamber 122, the volume of the second chamber 122 can be increased to keep the gas pressure of the second chamber 122 within a suitable range. In this way, the difficulty of inputting the gas into the second chamber 122 can be reduced, which helps to improve the gas collection rate, thereby improving the gas detection accuracy; in addition, the increase in the volume of the second chamber 122 can allow the second chamber 122 to have more space to accommodate the gas, which can further improve the gas collection rate.

[0073] In some embodiments, the degassing device 1 is provided with a receiving chamber, and a movable partition plate 13 is provided in the receiving chamber, and the partition plate 13 divides the receiving chamber into a first chamber 121 and a second chamber 122. The partition plate 13 is provided in the receiving chamber, and the partition plate 13 divides the receiving chamber into a first chamber 121 and a second chamber 122. When the partition plate 13 is moved, the volume of the first chamber 121 and the second chamber 122 can be adjusted at the same time, that is, the movement of a single component can adjust the volume of the first chamber 121 and the second chamber 122 at the same time, so that the operation can be convenient and the difficulty of operation can be reduced.

[0074] Continue to refer to Figure 1 and Figure 2In some embodiments, the degassing device 1 further includes a shell 12 , the accommodating cavity is disposed in the shell 12 , and the first opening 1211 and the second opening 1221 respectively penetrate the surface of the shell 12 .

[0075] Reference Figure 3 and Figure 4 The partition plate 13 isolates the first chamber 121 from the second chamber 122. In the degassing device 1, the first chamber 121 and the second chamber 122 are independent. A sealing structure can be set between the partition plate 13 and the side wall of the accommodating chamber. The sealing structure can block and fill the gap between the partition plate 13 and the side wall of the accommodating chamber, thereby reducing the possibility of gas flowing through the gap between the partition plate 13 and the side wall of the accommodating chamber.

[0076] For example, the sealing structure may be a first sealing ring 171 disposed on the periphery of the partition plate 13, the first sealing ring 171 sealingly abuts between the partition plate 13 and the side wall of the accommodating chamber, and in this case, the partition plate 13 and the first sealing ring 171 may be combined to form a piston structure; Figure 4 A plurality of first sealing rings 171 may be provided, and the plurality of first sealing rings 171 are arranged along the thickness direction of the partition plate 13 , so that the air tightness between the partition plate 13 and the side wall of the accommodating cavity can be improved.

[0077] In some embodiments, the height of the first opening 1211 of the first chamber 121 is higher than the liquid level of the transformer oil, which can reduce the probability of the transformer oil flowing out of the first opening 1211 and reduce the impact of the transformer oil on subsequent gas detection operations.

[0078] In some embodiments, the degassing device 1 further includes a driving member 14, and the partition plate 13 is provided with a connecting shaft 15, and the driving member 14 is connected to the connecting shaft 15 to drive the partition plate 13 to move. The driving member 14 is provided in the degassing device 1, and the driving member 14 can provide the partition plate 13 with the power required for its movement, so that the difficulty of moving the partition plate 13 can be reduced, and the amount of manual work can be reduced, which is conducive to improving the working efficiency.

[0079] In some embodiments, the driving member 14 is a motor, the partition plate 13 is slidably disposed in the accommodating cavity along the extension direction of the connecting shaft 15, the connecting shaft 15 penetrates the partition plate 13 along the sliding direction of the partition plate 13 and is threadedly connected to the partition plate 13, and the end of the connecting shaft 15 away from the driving member 14 is connected to the degassing assembly 11, wherein the driving member 14 is used to drive the connecting shaft 15 to rotate around its axis to drive the partition plate 13 to move, and at the same time drive the degassing assembly 11 to rotate. The driving member 14 is set as a motor. When the motor is started, it can drive the connecting shaft 15 to rotate, and the partition plate 13 is slidably set in the accommodating chamber. The threaded connection between the connecting shaft 15 and the partition plate 13 can convert the rotational movement of the connecting shaft 15 into a linear movement of the partition plate 13, so that the driving member 14 can drive the partition plate 13 to move, thereby changing the volume of the first chamber 121 and the second chamber 122; the degassing component 11 is connected to the connecting shaft 15. When the connecting shaft 15 rotates, the degassing component 11 can rotate with the connecting shaft 15, thereby stirring the transformer oil and separating the gas dissolved in the transformer oil.

[0080] In other embodiments, the driving member 14 can also be an electric push rod. The rod body of the electric push rod can be connected to a movable shaft. The partition plate 13 can be fixed to the connecting shaft. The rod body of the electric push rod can drive the connecting shaft to move linearly when it is extended and retracted, thereby indirectly driving the partition plate 13 to move. The degassing component 11 can also be arranged on the connecting shaft. When the connecting shaft moves, it can drive the degassing component 11 to move linearly, so that the degassing component 11 can beat the transformer oil, thereby separating the gas dissolved in the transformer oil.

[0081] Reference Figure 3 In some embodiments, a second sealing ring 172 can be set between the partition plate 13 and the connecting shaft 15. For example, the second sealing ring 172 can be fixed to the partition plate 13, and the second sealing ring 172 is provided with a threaded hole. The partition plate 13 is threadedly connected to the connecting shaft 15 through the second sealing ring 172; in this way, the second sealing ring 172 can fill and seal the gap between the partition plate 13 and the connecting shaft 15, thereby reducing the possibility of gas flowing through the gap between the partition plate 13 and the connecting shaft 15.

[0082] In some embodiments, a limiting rod 16 may be provided in the accommodating cavity, one end of the limiting rod 16 is connected to the side wall of the first chamber 121, and the other end of the limiting rod 16 passes through the partition plate 13 and is connected to the side wall of the second chamber 122, so that a sliding connection is formed between the partition plate 13 and the limiting rod 16. The limiting rod 16 can limit the movement of the partition plate 13 to movement along its length direction, so that the rotation of the partition plate 13 can be limited. Combined with the threaded connection between the partition plate 13 and the connecting shaft 15, when the connecting shaft 15 rotates, the rotational movement of the connecting shaft 15 can be converted into a linear movement of the partition plate 13, thereby realizing the adjustment of the volume size of the first chamber 121 and the second chamber 122; of course, a third sealing ring 173 may be provided between the partition plate 13 and the limiting rod 16. For example, the third sealing ring 173 may be fixed to the partition plate 13, and the third sealing ring 173 is sleeved on the outer periphery of the limiting rod 16.

[0083] In some embodiments, a protrusion 151 may be provided on the periphery of the connecting shaft 15 , and the protrusion 151 may abut against the surface of the partition plate 13 to serve as a movement limit for the partition plate 13 in the length direction of the connecting shaft 15 .

[0084] Reference Figure 3 , the second chamber 122 is located at the upper part of the partition plate 13, and the first chamber 121 is located at the lower part of the partition plate 13. In this embodiment, the degassing assembly 11 is arranged in the first chamber 121, that is, the first chamber 121 is used to contain transformer oil, and the second chamber 122 is used to collect separated gas, the second chamber 122 is located at the upper part of the partition plate 13, and the first chamber 121 is located at the lower part of the partition plate 13, that is, the second chamber 122 is arranged at the top of the first chamber 121, which can reduce the probability of transformer oil entering the second chamber 122, thereby reducing the probability of transformer oil entering the detection device 6 during subsequent detection operations, which helps to improve the service life of the detection device 6.

[0085] Reference Figure 3 The degassing assembly 11 includes a plurality of stirring blades 111, which are movably disposed in the first chamber 121 to separate the gas in the transformer oil. The stirring blades 111 are movably disposed in the first chamber 121, and the stirring blades 111 can move in the first chamber 121. When the stirring blades 111 move, the stirring blades 111 can stir the transformer oil, so that the bubbles in the transformer oil will flow upward, so that the gas dissolved in the transformer oil can be separated from the transformer oil.

[0086] In some embodiments, the stirring blade 111 can be set on the connecting shaft 15, and the connecting shaft 15 is used to drive the stirring blade 111 to move to separate the gas in the transformer oil. In this way, the connecting shaft 15 has the function of driving the stirring blade 111 and the partition plate 13 to move, that is, one component can drive the movement of two components. In this way, the number of driving parts 14 can be reduced, which is conducive to simplifying the structure of the degassing equipment 1.

[0087] In some embodiments, when it is necessary to stir and degas the transformer oil in the first chamber 121, the motor can be rotated forward and reverse alternately to make the partition plate 13 move back and forth in a small range, so that the volume in the first chamber 121 remains basically unchanged. At this time, the stirring blade 111 stirs the transformer oil due to the rotation of the connecting shaft 15, thereby separating the gas dissolved in the transformer oil. Then, the motor is continuously rotated forward or reversed to move the partition plate 13 to reduce the volume of the first chamber 121. Then, the gas in the first chamber 121 can be transported into the second chamber 122.

[0088] In some embodiments, the shell 12 is provided with an oil port 1212, which is connected to the first chamber 121 and is located at the bottom of the first chamber 121. The transformer oil can enter the first chamber 121 through the oil port 1212 for degassing, and the degassed transformer oil can be discharged from the first chamber 121 through the oil port 1212.

[0089] In some embodiments, the driving member 14 is disposed at the top of the shell 12, and the end of the connecting shaft 15 passes through the shell 12 and is connected to the driving member 14. At this time, the driving member 14 is located outside the accommodating cavity, which can reduce the contamination of the accommodating cavity during the operation of the driving member 14, thereby improving the detection accuracy of the gas.

[0090] In some embodiments, the degassing device 1 further includes a suction member 5, the cavity wall of the first chamber 121 is provided with a first opening 1211, the cavity wall of the second chamber 122 is provided with a second opening 1221, and the suction member 5 is used to pump the gas in the first chamber 121 to the second chamber 122. The suction member 5 can pump the gas in the first chamber 121 to the second chamber 122, that is, the suction member 5 can provide power to transfer the gas from the first chamber 121 to the second chamber 122, so as to increase the speed of gas collection.

[0091] Among them, the vacuum component 5 can be connected to the first chamber 121 through the first opening 1211, and the gas in the first chamber 121 leaves the first chamber 121 through the first opening 1211. The vacuum component 5 can be connected to the second chamber 122 through the second opening 1221, and the gas in the second chamber 122 leaves the second chamber 122 through the second opening 1221.

[0092] In some embodiments, the air extraction member 5 is provided with a third chamber, the first chamber 121 and the second chamber 122 are both connected to the third chamber, a first valve 2 is provided between the third chamber and the first chamber 121, and a second valve 3 is provided between the third chamber and the second chamber 122. The first valve 2 is provided between the third chamber and the first chamber 121, and the third chamber and the first chamber 121 can be connected or isolated from the first chamber 121 by controlling the opening and closing of the first valve 2, so that the operation can be convenient; correspondingly, the second valve 3 is provided between the third chamber and the second chamber 122, and the third chamber and the second chamber 122 can be connected or isolated from the second chamber 122 by controlling the opening and closing of the second valve 3, so that the operation can be further convenient.

[0093] In some embodiments, when the gas extraction member 5 delivers the gas in the first chamber 121 to the second chamber 122 , the first valve 2 and the second valve 3 are opened alternately.

[0094] Exemplarily, the first chamber 121 can be connected to the third chamber through the first opening 1211, the first valve 2 is arranged between the first opening 1211 and the third chamber, the second chamber 122 can be connected to the third chamber through the second opening 1221, and the second valve 3 is arranged between the second opening 1221 and the third chamber.

[0095] It should be noted that the first valve 2 and the second valve 3 are opened alternately, which can be understood as follows: in a certain time period, the first valve 2 is in an open state and the second valve 3 is in a closed state. At this time, the gas in the first chamber 121 can flow into the third chamber. In the next time period, the first valve 2 is switched from an open state to a closed state, and the second valve 3 is switched from a closed state to an open state. At this time, the gas in the third chamber can flow into the second chamber 122, and the gas in the first chamber 121 flows smoothly into the second chamber 122 for collection; in the next time period, the above steps can be repeated, the first valve 2 is switched to an open state, and the second valve 3 is switched to a closed state, so that the gas in the first chamber 121 can continuously flow into the second chamber 122; It should be noted that the first valve The state switching between the door 2 and the second valve 3 can be performed synchronously or separately. The valve in the open state can be switched to the closed state first, and then the valve in the closed state can be switched to the open state. This can reduce the possibility of gas backflow. In addition, the first valve 2 and the second valve 3 are opened alternately, and the gas in the first chamber 121 flows into the second chamber 122 with the third chamber as an intermediate medium. That is, although there is no conduction between the first chamber 121 and the second chamber 122 at a certain moment, during this period, the gas in the first chamber 121 can flow into the second chamber 122 with the vacuum component 5 as an intermediate medium. The first chamber 121 and the second chamber 122 are indirectly connected through the vacuum component 5. Therefore, the first chamber 121 and the second chamber 122 are connected.

[0096] The third chamber is connected to the first chamber 121 and the second chamber 122 respectively. In this way, the air extraction member 5 is equivalent to an intermediate medium connecting the first chamber 121 and the second chamber 122. The first valve 2 and the second valve 3 are set to be opened alternately. Then, when the first valve 2 is opened and the second valve 3 is closed, the gas leaving the first chamber 121 can be temporarily stored in the third chamber of the air extraction member 5. When the first valve 2 is closed and the second valve 3 is opened, the gas temporarily stored in the third chamber can flow into the second chamber 122. In this way, the gas in the second chamber 122 can be reduced to flow back into the first chamber. 121; in addition, since the volume of the first chamber 121 is variable, then, during the stage of transporting the gas from the first chamber 121 to the third chamber, the volume of the first chamber 121 can be reduced to make the air pressure of the first chamber 121 higher than the air pressure of the third chamber, so that the gas in the first chamber 121 can flow more easily into the third chamber. Correspondingly, during the stage of transporting the gas from the third chamber to the second chamber 122, the volume of the second chamber 122 can be increased to be lower than the air pressure of the third chamber, so that the gas in the third chamber can flow more easily into the second chamber 122.

[0097] In some embodiments, the vacuum element 5 may be a cylinder, and the third chamber is a chamber inside the cylinder. When the first valve 2 is in an open state and the second valve 3 is in a closed state, the piston rod of the cylinder moves to exhaust gas, and the gas leaves the first chamber 121 and enters the third chamber. When the first valve 2 is in a closed state and the second valve 3 is in a closed state, the piston rod of the cylinder moves in the opposite direction to exhaust the cylinder, and the gas leaves the third chamber and enters the second chamber 122. In other embodiments, the vacuum element 5 may also include a third chamber and a negative pressure pump connected to the third chamber. When the first valve 2 is in an open state and the second valve 3 is in a closed state, the negative pressure pump pumps the gas in the first chamber 121 into the third chamber. When the first valve 2 is in a closed state and the second valve 3 is in a closed state, the negative pressure pump pumps the gas in the third chamber into the second chamber 122.

[0098] In some embodiments, the gas collection and detection system further includes a detection device 6 for detecting the gas, and the gas extraction member 5 is further used to pump the gas in the second chamber 122 to the detection device 6, and a third valve 4 is provided between the third chamber and the detection device 6. The third valve 4 is provided between the third chamber and the detection device 6, and the third chamber and the detection device 6 can be connected or isolated from each other by controlling the opening and closing of the third valve 4, so that the operation can be convenient.

[0099] In some embodiments, when the gas extraction member 5 extracts the gas in the second chamber 122 to the detection device 6, the first valve 2 is closed, and the second valve 3 and the third valve 4 are opened alternately.

[0100] It should be noted that the second valve 3 and the third valve 4 are opened alternately, which can be understood as, in a certain time period, the second valve 3 is in an open state and the third valve 4 is in a closed state. At this time, the gas in the second chamber 122 can flow into the third chamber. In the next time period, the second valve 3 is switched from an open state to a closed state, and the third valve 4 is switched from a closed state to an open state. At this time, the gas in the third chamber can flow into the detection device 6, and the gas in the second chamber 122 smoothly flows into the detection device 6 for detection; in the next time period, the above steps can be repeated, the second valve 3 is switched to an open state, and the third valve 4 is switched to a closed state, so that the gas in the second chamber 122 can continuously flow into the detection device 6; It should be noted that the second valve The state switching between the second valve 3 and the third valve 4 can be carried out synchronously or separately. It should be noted that the valve in the open state can be switched to the closed state first, and then the valve in the closed state can be switched to the open state, so as to reduce the possibility of gas backflow; in addition, the second valve 3 and the third valve 4 are opened alternately, and the gas in the second chamber 122 flows into the detection device 6 with the third chamber as the intermediate medium, that is, although there is no conduction between the second chamber 122 and the detection device 6 at a certain moment, during this period, the gas in the second chamber 122 can flow into the detection device 6 with the vacuum component 5 as the intermediate medium, and the second chamber 122 and the detection device 6 are indirectly connected through the vacuum component 5, therefore, the second chamber 122 and the detection device 6 are connected.

[0101] The detection device 6 is connected to the third chamber, that is, the third chamber is connected to the second chamber 122 and the detection device 6 respectively. In this way, the suction member 5 is equivalent to an intermediate medium connecting the second chamber 122 and the detection device 6. The second valve 3 and the third valve 4 are set to be opened alternately. Then, when the second valve 3 is opened and the third valve 4 is closed, the gas leaving the second chamber 122 can be temporarily stored in the third chamber of the suction member 5. When the second valve 3 is closed and the third valve 4 is opened, the gas temporarily stored in the third chamber can flow into the detection device 6, which can reduce the probability of the gas flowing back into the second chamber 122 in the detection device 6; in addition, since the volume of the second chamber 122 is variable, then, in the stage of transporting the gas from the second chamber 122 to the third chamber, the volume of the second chamber 122 can be reduced to make the air pressure of the second chamber 122 higher than the air pressure of the third chamber, so that the gas in the second chamber 122 is easier to flow into the third chamber, which can reduce the residual amount of gas in the second chamber 122, which helps to improve the accuracy of detection.

[0102] In some embodiments, the gas collection and detection system also includes a gas retention pool 7. The third valve 4 is connected to the detection device 6 via a connecting pipe 8. The connecting pipe 8 is a three-way pipe. The three openings of the connecting pipe 8 are respectively connected to the third valve 4, the detection device 6 and the gas retention pool 7. In the process of transporting gas from the second chamber 122 to the detection device 6, a part of the gas can be stored in the gas retention pool 7 as a sample.

[0103] In some embodiments, a photoacoustic cell for detecting gas components is provided in the detection device 6. The photoacoustic cell is a device for generating and detecting photoacoustic signals, and its main function is to convert the heat energy generated by the gas to be detected after absorbing light of a specific wavelength into an acoustic wave signal for subsequent detection and analysis. When light of a specific wavelength is irradiated into the photoacoustic cell containing the gas to be detected, the gas molecules absorb the light energy and are excited. Since the absorption process is a non-radiative transition, the excited molecules convert the energy into heat energy through collisions and other means, so that the gas temperature increases. The increase in temperature causes the gas pressure to change, thereby generating an acoustic wave, which is the photoacoustic signal.

[0104] Reference Figure 5 The present application also provides a method for collecting and detecting gas, comprising the following steps:

[0105] S100, placing transformer oil in the first chamber;

[0106] S200, separation of gases dissolved in transformer oil;

[0107] S300, inputting gas from the first chamber into the second chamber connected to the first chamber, and in the process of transferring the gas from the first chamber to the second chamber, the volume of the first chamber is gradually reduced.

[0108] It should be noted that, in the process of gas transfer from the first chamber to the second chamber, the volume of the first chamber gradually decreases, which may mean that in this stage, the volume of the first chamber continues to decrease, or it may mean that in this stage, the volume of the first chamber is first reduced to a certain value, so that the volume of the first chamber is maintained at this value for a period of time, and then reduced to another value, the volume of the first chamber is maintained at this value for a period of time, and the volume of the first chamber is maintained at this value for a period of time, and then the volume of the first chamber continues to be reduced, and this process is repeated until the volume of the first chamber is reduced to a preset value, wherein the preset value may refer to the preset minimum volume value of the first chamber, so that the first chamber can retain a certain volume to accommodate transformer oil to ensure that the transformer oil will not overflow from the first chamber, thereby reducing the influence of the transformer oil on the gas detection accuracy.

[0109] It should be noted that at the start time of the gas transfer operation, the gas is stored in the first chamber, and at the end time, the gas is stored in the second chamber. The storage position of the gas changes between the start time and the end time, so it can be regarded as the gas is transferred from the first chamber to the second chamber; in some embodiments, during the time period between the start time and the end time, the first chamber and the second chamber continue to be connected, and the gas can continuously flow from the first chamber to the second chamber. In other embodiments, during the time period between the start time and the end time, the first chamber and the second chamber are connected at a certain moment, and are cut off (no gas exchange) at the next moment, and then reconnected. In this embodiment, although there is a moment of separation between the first chamber and the second chamber, and no gas flows, the two are subsequently reconnected, and the gas can continue to enter the second chamber from the first chamber. In this way, the separation between the first chamber and the second chamber can be regarded as a temporary separation between the two, and this moment can be regarded as a special moment in the gas transfer process. This moment is also part of the gas transfer process and does not mean that the gas transfer is over.

[0110] It should be noted that the gas collection and detection method provided in the present application can be applied to the gas collection and detection system provided in any of the above-mentioned embodiments. By way of example, the first chamber and the second chamber in the gas collection and detection method are the first chamber 121 and the second chamber 122 in the gas collection and detection system.

[0111] During the process of gas discharge from the first chamber, the gas content in the first chamber gradually decreases, and the gas pressure in the first chamber gradually decreases as the gas is discharged. The lower the gas pressure, the more difficult it is to discharge the remaining gas. In this stage, reducing the volume of the first chamber can increase the gas pressure in the first chamber so that the gas pressure in the first chamber can be within a suitable range. This can facilitate the discharge of the remaining gas in the first chamber, which is beneficial to improving the gas collection rate and thus improving the detection accuracy.

[0112] In some embodiments, during the process of gas transfer from the first chamber to the second chamber, the volume of the second chamber gradually increases.

[0113] It should be noted that in the process of gas transfer from the first chamber to the second chamber, the volume of the second chamber gradually increases, which may mean that in this stage, the volume of the second chamber continues to increase, or it may mean that in this stage, the volume of the second chamber first increases to a certain value, so that the volume of the second chamber is maintained at this value for a period of time, and then increases to another value, and the volume of the second chamber is maintained at this value for a period of time, and the volume of the second chamber is maintained at this value for a period of time, and then the volume of the second chamber continues to increase, and this process is repeated until the volume of the second chamber increases to a preset value, wherein the preset value may refer to the preset maximum volume value of the second chamber. In this way, the pressure and concentration of the gas in the second chamber can be within an appropriate range, which is helpful for subsequent gas detection operations.

[0114] As the gas enters the second chamber, the gas content in the second chamber gradually increases, and the gas pressure in the second chamber gradually increases as the gas enters. The higher the gas pressure, the more difficult it is for the remaining gas to enter the second chamber. In this stage, increasing the volume of the second chamber can reduce the gas pressure in the second chamber, so that the gas pressure in the second chamber can be within a suitable range. This can encourage the remaining gas to enter the second chamber, which is beneficial to improving the gas collection rate of the second chamber, thereby improving the detection accuracy.

[0115] Reference Figure 6 Thus, S300 can be replaced by S310: the gas is input from the first chamber to the second chamber connected to the first chamber, and in the process of transferring the gas from the first chamber to the second chamber, the volume of the first chamber gradually decreases and the volume of the second chamber gradually increases.

[0116] Reference Figure 7 In some embodiments, the step of inputting the gas from the first chamber to the second chamber connected to the first chamber in S300 includes at least the following steps:

[0117] S301, isolating the third chamber from the second chamber, connecting the third chamber to the first chamber, and then inputting the gas in the first chamber into the third chamber;

[0118] S302, isolating the third chamber from the first chamber, connecting the third chamber to the second chamber, and then inputting the gas in the third chamber into the second chamber.

[0119] It should be noted that the isolating of the third chamber from the second chamber and the connecting of the third chamber to the first chamber in S301 can be performed sequentially, that is, the third chamber is first isolated from the second chamber, and then the third chamber is connected to the first chamber, or the corresponding isolation and connecting operations can be performed simultaneously; correspondingly, the isolating of the third chamber from the first chamber and the connecting of the third chamber to the second chamber in S302 can be performed sequentially, that is, the third chamber is first isolated from the first chamber, and then the third chamber is connected to the second chamber, or the corresponding isolation and connecting operations can be performed simultaneously.

[0120] In step S301, the third chamber is isolated from the second chamber, and the third chamber is connected to the first chamber, and then the gas in the first chamber is input into the third chamber, so that the gas in the first chamber enters the third chamber and is temporarily stored in the third chamber, and then S302 is performed, and the gas temporarily stored in the third chamber can enter the second chamber. In this way, the third chamber becomes a transfer medium in the process of gas being transported from the first chamber to the second chamber. In conjunction with the connection and isolation operations between the first chamber, the second chamber and the third chamber, the gas can be transferred from the first chamber to the second chamber in one direction, so that the possibility of gas in the second chamber flowing back into the first chamber can be reduced, which is beneficial to improving the gas collection rate; in this process, at each moment of collecting gas, the first chamber and the second chamber are not directly connected, but are indirectly connected through the third chamber, which can reduce the possibility of gas reflux.

[0121] In some embodiments, during the process of gas transfer from the first chamber to the second chamber, when the first chamber is connected to the second chamber, the gas in the first chamber can be input into the second chamber, and the volume of the first chamber remains unchanged. When the first chamber is isolated from the second chamber, there is no gas flow between the first chamber and the second chamber, and the volume of the first chamber decreases. When the first chamber is connected to the second chamber, the gas in the first chamber can be input into the second chamber, and the volume of the first chamber remains unchanged. When the first chamber is isolated from the second chamber, the volume of the first chamber decreases. Then, at the moment of gas flow, the volume of the first chamber will not change, so that the effect of the volume change of the first chamber on the gas flow rate can be reduced, which is conducive to promoting the smooth flow of gas.

[0122] In some embodiments, during the process of gas transfer from the first chamber to the second chamber, the first chamber and the second chamber are alternately switched between a connected state and a disconnected state until the volume of the first chamber is reduced to a preset value.

[0123] It should be noted that the preset value of the first chamber volume can be the minimum value of the first chamber volume, such as allowing the first chamber to still have a certain amount of accommodation space, so that the first chamber can accommodate transformer oil, reducing the possibility of transformer oil overflowing from the first chamber, and reducing the impact of transformer oil on subsequent gas detection operations.

[0124] During the process of gas transferring from the first chamber to the second chamber, the first chamber and the second chamber switch alternately between a connected state and a separated state. When the first chamber and the second chamber switch from a connected state to a separated state for the first time, the volume of the first chamber can be reduced to a certain value. When the first chamber and the second chamber switch from a connected state to a separated state for the second time, the volume of the first chamber can be reduced to another value. When the first chamber and the second chamber switch from a connected state to a separated state for the third time, the volume of the first chamber can be reduced to a smaller value. This process is repeated, and the volume of the first chamber can be reduced to a preset value in a gradient manner. In this way, the gas pressure in the first chamber can be maintained within an appropriate range, making it convenient to extract the gas from the first chamber.

[0125] In some embodiments, during the process of gas transferring from the first chamber to the second chamber, the volume of the first chamber gradually decreases and the volume of the second chamber gradually increases; the volume of the second chamber may also increase when the first chamber and the second chamber are separated, and during the process of gas transferring from the first chamber to the second chamber, the volume of the second chamber is increased in a gradient manner, so that the gas pressure in the second chamber can also be maintained within an appropriate range, making it convenient to deliver the gas into the second chamber.

[0126] Reference Figure 8 In some embodiments, after S300, the method further includes:

[0127] S400, isolating the first chamber from the second chamber, and inputting the gas in the second chamber into a detection device connected to the second chamber. During the process of transferring the gas in the second chamber to the detection device, the volume of the second chamber is gradually reduced.

[0128] Separating the first chamber from the second chamber can reduce the possibility of gas backflow into the first chamber, so as to enable more gas to enter the detection equipment for detection, which is beneficial to improving the detection accuracy; in the process of gas discharge from the second chamber, the gas content in the second chamber gradually decreases, and the air pressure in the second chamber will gradually decrease with the discharge of the gas, and the lower the air pressure, the more difficult it is to discharge the remaining gas. In this stage, reducing the volume of the second chamber can increase the air pressure in the second chamber, so that the air pressure in the second chamber can be within a suitable range, which can promote the discharge of the remaining gas in the second chamber, which is beneficial to transfer the gas in the second chamber into the detection equipment, thereby improving the detection accuracy.

[0129] Reference Fig. 9 In some embodiments, the step of inputting the gas in the second chamber to the detection device connected to the second chamber in S400 includes at least the following steps:

[0130] S401, isolating the third chamber from the detection device, connecting the third chamber to the second chamber, and then inputting the gas in the second chamber into the third chamber;

[0131] S402, isolating the third chamber from the second chamber, connecting the third chamber to the detection device, and then inputting the gas in the third chamber into the detection device.

[0132] It should be noted that, isolating the third chamber from the detection device and connecting the third chamber with the second chamber in S401 can be performed sequentially, that is, first isolating the third chamber from the detection device and then connecting the third chamber with the second chamber, or the corresponding isolation and connection operations can be performed simultaneously; correspondingly, isolating the third chamber from the second chamber and connecting the third chamber with the detection device in S402 can be performed sequentially, that is, first isolating the third chamber from the second chamber and then connecting the third chamber with the detection device, or the corresponding isolation and connection operations can be performed simultaneously.

[0133] In step S401, the third chamber is isolated from the detection equipment, and the third chamber is connected to the second chamber, and then the gas in the second chamber is input into the third chamber, so that the gas in the second chamber enters the third chamber and is temporarily stored in the third chamber, and then S402 is performed, and the gas temporarily stored in the third chamber can enter the detection equipment. In this way, the third chamber becomes a transfer medium in the process of transporting the gas from the second chamber to the detection equipment, and the connection and isolation operations between the second chamber, the detection equipment and the third chamber can promote the unidirectional transfer of gas from the second chamber to the detection equipment, so that the possibility of gas in the detection equipment flowing back into the second chamber can be reduced, which is beneficial to increase the content of gas in the detection equipment, that is, to increase the concentration of gas in the detection equipment; in this process, at each time of collecting gas, the second chamber and the detection equipment are not directly connected, but are indirectly connected through the third chamber, which can reduce the possibility of gas reflux.

[0134] In some embodiments, during the process of gas transfer from the second chamber to the detection device, when the second chamber is connected to the detection device, the gas in the second chamber can be input into the detection device, and the volume of the second chamber remains unchanged; when the second chamber is disconnected from the detection device, there is no gas flow between the second chamber and the detection device, and the volume of the second chamber decreases. When the second chamber is connected to the detection device, the gas in the second chamber can be input into the detection device, and the volume of the second chamber remains unchanged; when the second chamber is disconnected from the detection device, the volume of the second chamber decreases. Then, at the moment of gas flow, the volume of the second chamber will not change, thereby reducing the effect of the volume change of the second chamber on the gas flow rate, which is conducive to promoting the smooth flow of gas.

[0135] In some embodiments, during the process of transferring the gas from the second chamber to the detection device, the second chamber and the detection device are alternately switched between a connected state and a disconnected state until the volume of the second chamber is reduced to a preset value.

[0136] It should be noted that the preset value of the second chamber volume can be a zero value or a non-zero value; the preset value of the second chamber volume is not related to the preset value of the first chamber volume, and the two can be equal or unequal.

[0137] During the process of gas being transferred from the second chamber to the detection device, the second chamber and the detection device are alternately switched between a connected state and a disconnected state. When the second chamber and the detection device are switched from a connected state to a disconnected state for the first time, the volume of the second chamber can be reduced to a certain value. When the second chamber and the detection device are switched from a connected state to a disconnected state for the second time, the volume of the second chamber can be reduced to another value. When the second chamber and the detection device are switched from a connected state to a disconnected state for the third time, the volume of the second chamber can be reduced to a smaller value. This process is repeated repeatedly, and the volume of the second chamber can be reduced to a preset value in a gradient manner. In this way, the gas pressure in the second chamber can be maintained within an appropriate range, making it convenient to extract the gas from the second chamber.

[0138] Reference Figure 1 , Figure 2 and Fig.10 When the gas collection and detection method provided in this application is applied to the gas collection and detection system provided in this application, it specifically includes the following steps:

[0139] S10, putting transformer oil into the first chamber 121;

[0140] S20, separating the gas dissolved in the transformer oil using the degassing component 11;

[0141] S31, opening the vacuum element 5 and the first valve 2 and closing the second valve 3, so that the vacuum element 5 draws the gas in the first chamber 121 into the third chamber in the vacuum element 5;

[0142] S32, close the first valve 2 and open the second valve 3, and the gas extraction member 5 transports the gas in the third chamber to the second chamber 122;

[0143] S33, closing the second valve 3, moving the partition plate 13 to reduce the volume of the first chamber 121 and increase the volume of the second chamber 122;

[0144] S34, repeat S31 to S33 until the volume of the first chamber 121 is reduced to a preset value, and close the air extraction member 5;

[0145] S41, opening the vacuum element 5 and the second valve 3 and closing the third valve 4, the vacuum element 5 draws the gas in the second chamber 122 into the third chamber;

[0146] S42, closing the second valve 3 and opening the third valve 4, so that the gas extraction member 5 delivers the gas in the third chamber to the detection device 6;

[0147] S43, closing the third valve 4, and moving the partition plate 13 to reduce the volume of the second chamber 122;

[0148] S44, repeat S41 to S43 until the volume of the second chamber 122 is reduced to a preset value, and close the air extraction member 5;

[0149] S50: Use the detection device 6 to detect the collected gas.

[0150] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gas collection and detection system, characterized in that: A degassing device is included, wherein the degassing device comprises: A first chamber, wherein a degassing component is disposed in the first chamber, the degassing component is used to separate gas dissolved in transformer oil, and the volume of the first chamber is variable; a second chamber, the second chamber being in communication with the first chamber, and the second chamber being used to collect the gas separated by the degassing assembly; In the stage where the gas is transported from the first chamber to the second chamber, the volume of the first chamber gradually decreases.

2. The gas collection and detection system according to claim 1, characterized in that: The volume of the second chamber is variable, and the volume of the second chamber is negatively correlated with the volume of the first chamber.

3. The gas collection and detection system according to claim 1, characterized in that: The degassing device is provided with a containing chamber, a movable partition plate is provided in the containing chamber, and the partition plate divides the containing chamber into the first chamber and the second chamber.

4. The gas collection and detection system according to claim 3, characterized in that: The degassing device further comprises a driving member, the partition plate is provided with a connecting shaft, and the driving member is connected to the connecting shaft to drive the partition plate to move.

5. The gas collection and detection system according to claim 4, characterized in that: The partition plate is slidably disposed in the accommodating cavity along the extending direction of the connecting shaft, and the connecting shaft penetrates the partition plate along the sliding direction of the partition plate and is threadedly connected to the partition plate; The end of the connecting shaft away from the driving member is connected to the degassing assembly; The driving member is used to drive the connecting shaft to rotate around its axis to drive the partition plate to move and simultaneously drive the degassing assembly to rotate.

6. The gas collection and detection system according to claim 3, characterized in that: The second chamber is located at an upper portion of the partition plate, and the first chamber is located at a lower portion of the partition plate.

7. The gas collection and detection system according to any one of claims 1 to 6, characterized in that: The degassing component includes a plurality of stirring blades, and the stirring blades are movably arranged in the first chamber to separate the gas in the transformer oil.

8. The gas collection and detection system according to any one of claims 1 to 6, characterized in that: The degassing device further comprises a pumping member, and the pumping member is used for pumping the gas in the first chamber to the second chamber.

9. The gas collection and detection system according to claim 8, characterized in that: The vacuum element is provided with a third chamber, the first chamber and the second chamber are both connected to the third chamber, a first valve is provided between the third chamber and the first chamber, and a second valve is provided between the third chamber and the second chamber.

10. The gas collection and detection system according to claim 9, characterized in that: The gas collection and detection system also includes a detection device for detecting gas. The vacuum element is also used to pump the gas in the second chamber to the detection device. A third valve is provided between the third chamber and the detection device.

11. A gas collection and detection method, characterized in that: The following steps are involved: Placing transformer oil in the first chamber; separating gas dissolved in the transformer oil; The gas is input from the first chamber to the second chamber, and the volume of the first chamber is gradually reduced during the process of the gas being transferred from the first chamber to the second chamber.

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