Gas separation device, gas collection system and gas collection method

Abstract

The invention provides a gas separation device, a gas collection system and a gas collection method. The gas separation device comprises a heating device, the heating device comprises a fixing plate and a heating ring, the fixing plate is an annular plate, the separation container is fixed in the separation cylinder through the fixing plate, and the heating ring sleeves the outer side of the separation container, so that a stable and uniform heating environment can be provided for an oil sample in the separation container; uniform heat conduction in the heating process can be ensured, and the gas release efficiency is improved. The stirring mechanism comprises a driving motor, a stirring shaft, an inclined blade assembly and a spiral blade assembly, and the oil sample can be fully stirred while being heated. The combined design of the inclined blade assembly and the spiral blade assembly can generate strong axial and radial flow, ensures that an oil sample is uniformly heated, accelerates the release and separation of gas, ensures the stability and high efficiency of the separation process, can improve the adaptability of the gas separation device, and improves the use experience.

Description

Technical Field

[0001] The present disclosure relates to the technical field of gas collection, and in particular to a gas separation device, a gas collection system, and a gas collection method. Background Art

[0002] Transformers play a critical role in power systems, and their operating status directly impacts their stability and safety. During transformer operation, abnormal arcing is a common and potentially hazardous phenomenon. Arcing not only damages the transformer's internal structure but also causes the decomposition of transformer oil, generating a range of gases. These gases, including hydrogen, carbon monoxide, and methane, are explosive and corrosive, posing a threat to the safe operation of the transformer.

[0003] Arcs generated under different voltages, or the decomposition products of transformer oil at different temperatures under the same arc conditions, vary. Studying the composition and concentration of these decomposition gases is of great significance for understanding and predicting transformer failures, formulating preventive measures, and improving the operational reliability of transformers. However, in current experimental research, there is a widespread lack of efficient and reliable gas collection systems, which seriously restricts the progress of related research. During the experiment, the gas dissolved in the transformer oil needs to be quickly and thoroughly separated for analysis. However, the collection devices in related technologies often have problems such as uneven gas mixing and incomplete separation during the separation process, resulting in inaccurate experimental results. Because the gas collection systems in related technologies cannot meet the gas collection requirements of arc decomposition transformer oil experiments, there are deficiencies in gas separation and collection efficiency, as well as adaptability. Summary of the Invention

[0004] In view of this, in order to solve the technical problems of uneven gas mixing and incomplete separation in the separation process of the gas collection system in the prior art, the present disclosure provides a gas separation device, a gas collection system and a gas collection method.

[0005] According to a first aspect of an embodiment of the present disclosure, a gas separation device is provided, comprising a separation cylinder and a stirring mechanism, wherein a separation container and a heating device are provided in the separation cylinder, the heating device is used to heat the separation container, and the stirring mechanism is used to stir the oil sample in the separation container;

[0006] The heating device includes a fixed plate and a heating ring. The fixed plate is constructed as an annular plate and is fixedly connected to the inner wall of the separation cylinder. The separation container is detachably connected to the fixed plate. The heating ring is sleeved on the outside of the separation container.

[0007] The stirring mechanism includes a drive motor and a stirring device. The drive motor is arranged on the upper end surface of the top of the separation cylinder. The stirring device includes a stirring shaft, an inclined blade assembly and a spiral blade assembly. The output end of the drive motor is connected to the stirring shaft. The inclined blade assembly and the spiral blade assembly are both arranged on the stirring shaft, and the spiral blade assembly is located above the inclined blade assembly.

[0008] In an optional embodiment, the separation cylinder includes a cylinder body, a bottom plate and a cover plate, the cover plate is arranged on the top of the cylinder body, the drive motor is fixed to the cover plate, and the bottom plate is detachably connected to the cylinder body.

[0009] In an alternative embodiment,

[0010] The gas separation device includes a pressure monitoring device, the pressure monitoring device and the temperature monitoring device are both arranged in the separation cylinder, and the pressure monitoring device is used to monitor the pressure data in the separation cylinder; and / or,

[0011] The gas separation device includes a temperature monitoring device, which is arranged in the separation cylinder and is used to monitor temperature data in the separation cylinder.

[0012] According to a second aspect of an embodiment of the present disclosure, a gas collection system is provided, the gas collection system being used to collect gas generated by arc decomposition of transformer oil, the gas collection system comprising a sampling assembly, a separation assembly, a storage assembly, and a control mechanism that are connected in sequence, the sampling assembly, the separation assembly, and the storage assembly being connected in sequence;

[0013] The sampling assembly includes a sampling pipe, a sampling pump, a one-way valve, a sampling container and a connecting pipe. The sampling pipe is connected to the inlet of the one-way valve through the sampling pump, and the outlet of the one-way valve is connected to the sampling container. The inlet of the sampling pipe is used to extend into the oil sample of the transformer. The sampling container is connected to the separation assembly through the connecting pipe.

[0014] The separation assembly comprises an input pipe, a micro pump, an output pipe, and the gas separation device according to any one of the first aspects, wherein the connecting pipe is connected to the inlet of the input pipe through the micro pump, the outlet of the input pipe is connected to the inlet of the separation container of the gas separation device, the outlet of the separation container is connected to the inlet of the output pipe, and the outlet of the output pipe is connected to the storage assembly;

[0015] The sampling pump, the micro pump, the stirring mechanism, and the heating ring are electrically connected to the control structure respectively.

[0016] In an alternative embodiment,

[0017] When the gas separation device further includes a pressure monitoring device, the pressure monitoring device is electrically connected to the control mechanism; and / or,

[0018] When the gas separation device includes a temperature monitoring device, the temperature monitoring device is electrically connected to the control mechanism.

[0019] In an optional embodiment, the storage assembly includes a pipe joint, a pipe sealing structure, and a plurality of main pipes located between the pipe joint and the pipe sealing structure;

[0020] The plurality of main pipelines are connected in sequence, and adjacent main pipelines are connected via a jumper pipeline. The main pipeline at the head end is connected to the input pipeline via a pipeline joint, and the main pipeline at the tail end is connected to the pipeline blocking structure.

[0021] An opening is provided in the middle of each main pipeline for connecting to the inlet of the branch pipeline. A first pipe valve is provided on the branch pipeline. The outlet of the branch pipeline is connected to a tank structure, which is used to store the gas discharged from the separation component.

[0022] In an optional embodiment, the branch pipe is detachably connected to the tank structure via a sealing structure, wherein the tank structure includes a storage tank and a second pipe valve, and the inlet of the storage tank is connected to the sealing structure via the second pipe valve.

[0023] In an optional embodiment, the sealing structure includes a connecting sleeve, a sealing sleeve, a mounting sleeve and a plurality of sealing rubber rings. The top of the connecting sleeve is connected to the second pipe valve, the bottom of the connecting sleeve is connected to the sealing sleeve, and the plurality of sealing rubber rings are arranged on the outside of the sealing sleeve. The mounting sleeve is connected to the top of the branch pipe, the mounting sleeve is threadedly connected to the connecting sleeve, and the sealing sleeve cooperates with the branch pipe to realize a detachable connection between the branch pipe and the tank structure.

[0024] In an optional embodiment, a third pipe valve is provided on the jumper pipe.

[0025] According to a third aspect of an embodiment of the present disclosure, a gas collection method is provided, wherein the gas collection method collects gas generated by arc decomposition of transformer oil through a gas collection system as described in any one of the second aspects.

[0026] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: In the present disclosure, the gas separation device includes a heating device, and the heating device includes a fixed plate and a heating ring, and the fixed plate is constructed as an annular plate, the separation container is fixed in the separation cylinder through the fixed plate, and the heating ring is arranged on the outside of the separation container, thereby providing a stable and uniform heating environment for the oil sample in the separation container. Among them, since the heating ring is arranged on the outside of the separation container and is fixed by the annular fixed plate, it can ensure uniform heat conduction during the heating process and improve the gas release efficiency. The stirring mechanism includes a drive motor, a stirring shaft, an inclined blade assembly and a spiral blade assembly, which can fully stir the oil sample while heating it. The combined design of the inclined blade assembly and the spiral blade assembly can generate strong axial and radial flows, ensure that the oil sample is evenly heated, accelerate the release and separation of the gas, ensure the stability and efficiency of the separation process, and improve the adaptability of the gas separation device and the user experience.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 A schematic diagram of a gas collection system according to an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a separation assembly according to an embodiment of the present invention;

[0033] Figure 3 is a schematic diagram of a heating device according to an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of a stirring mechanism according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of a main pipeline according to an embodiment of the present invention;

[0036] Figure 6 Schematic diagram of the sealing structure according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 101. Sampling container; 102. One-way valve; 103. Connecting pipe; 201. Separation cylinder; 202. Input pipe; 203. Output pipe; 204. Micro pump; 205. Bottom plate; 301. Drive motor; 302. Stirring shaft; 303. Inclined blade assembly; 304. Spiral blade assembly; 401. Main pipe; 402. Pipe joint; 403. Mounting sleeve; 404. Pipe sealing structure; 501. Storage tank; 502. Connecting sleeve; 503. Sealing sleeve; 601. Separation container; 602. Fixing plate; 603. Heating coil; 701. Jumper pipe. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0041] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0042] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. Therefore, the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0043] The following will describe the embodiments of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for the purpose of illustrating the present application and are not intended to limit the scope of protection of the present application.

[0044] In order to solve the technical problems of uneven gas mixing and incomplete separation in the separation process of the gas collection system in the prior art, the present disclosure provides a gas separation device, a gas collection system and a gas collection method.

[0045] In the present disclosure, the gas separation device includes a heating device, and the heating device includes a fixed plate and a heating ring, and the fixed plate is constructed as an annular plate, the separation container is fixed in the separation cylinder through the fixed plate, and the heating ring is arranged on the outside of the separation container, thereby providing a stable and uniform heating environment for the oil sample in the separation container. Among them, since the heating ring is arranged on the outside of the separation container and is fixed by the annular fixed plate, it can ensure uniform heat conduction during the heating process and improve the gas release efficiency. The stirring mechanism includes a drive motor, a stirring shaft, an inclined blade assembly and a spiral blade assembly, which can fully stir the oil sample while heating it. The combined design of the inclined blade assembly and the spiral blade assembly can generate strong axial and radial flows, ensure that the oil sample is evenly heated, accelerate the release and separation of the gas, ensure the stability and efficiency of the separation process, and improve the adaptability of the gas separation device and the user experience.

[0046] In one exemplary embodiment, a gas separation device is provided. Figures 1 to 4 As shown, the gas separation device includes a separation cylinder 201 and a stirring mechanism. The separation cylinder 201 is provided with a separation container 601 and a heating device. The heating device is used to heat the separation container 601, and the stirring mechanism is used to stir the oil sample in the separation container 601. The cooperation between the heating device and the stirring mechanism can greatly improve the efficiency of gas separation.

[0047] In which, the heating device includes a fixed plate 602 and a heating ring 603. The fixed plate 602 is constructed as an annular plate. The fixed plate 602 is fixedly connected to the inner wall of the separation cylinder 201. The separation container 601 is detachably connected to the fixed plate 602. The heating ring 603 is sleeved on the outside of the separation container 601. Based on this, it can better ensure uniform heat conduction during the heating process and improve the gas release efficiency.

[0048] To ensure that the stirring mechanism can fully stir the oil sample in the separation container 601, the stirring mechanism includes a drive motor 301 and a stirring device. The drive motor 301 is disposed on the upper end surface of the separation cylinder 201. The stirring device includes a stirring shaft 302, an inclined blade assembly 303, and a spiral blade assembly 304. The length of the stirring shaft 302 is customized according to the height of the cylinder and is not limited thereto.

[0049] The output end of the drive motor 301 is connected to the stirring shaft 302. The inclined blade assembly 303 and the spiral blade assembly 304 are both disposed on the stirring shaft 302, with the spiral blade assembly 304 positioned above the inclined blade assembly 303. The combined design of the inclined blade assembly 303 and the spiral blade assembly 304 can generate strong axial and radial flows, ensuring sufficient stirring of the oil sample, better and more uniform heating, accelerating the release and separation of gas, ensuring a stable and efficient separation process, and improving the adaptability of the gas separation device.

[0050] The inclined blade assembly 303 can be composed of a plurality of blades with an inclination angle of 45°, which are evenly distributed along the circumference of the stirring shaft 302, and the blades are welded to the stirring shaft 302. This assembly generates a strong radial flow during the stirring process, which promotes the lateral diffusion of the oil sample in the separation container 601. The spiral blade assembly 304 is located above the inclined blade assembly 303 and can be composed of continuous spiral blades. The blades are tightly wound and welded to the stirring shaft 302. During stirring, the spiral blades generate an upward axial flow, which drives the oil sample to rise along the stirring shaft 302. Combined with the radial flow formed by the inclined blade assembly 303, three-dimensional stirring of the oil sample is achieved.

[0051] It's important to note that the structural design and parameter settings of this gas separation device can be adjusted to suit different experimental requirements. Whether it's transformer oil decomposition gases generated by arcs at different voltages, or oil samples at different temperatures under the same arc conditions, efficient separation can be achieved by adjusting parameters such as heating temperature and stirring speed. This effectively addresses the adaptability shortcomings of existing devices and meets the diverse needs of experimental research.

[0052] The separation cylinder 201 includes a cylinder body, a bottom plate 205 and a cover plate. The cover plate is arranged on the top of the cylinder body. The driving motor 301 is fixed to the cover plate. The bottom plate 205 is detachably connected to the cylinder body.

[0053] For example, the barrel of the separation barrel 201 can be a cylindrical hollow structure, and the base plate 205 is a circular flat plate with a diameter matching the barrel, and is detachably connected to the bottom of the barrel by a plurality of bolts evenly distributed. The heating coil 603 can be a spring heating coil 603, or it can be a heating coil 603 of other forms, which is not limited to this. An oil drain hole can be provided in the center of the base plate 205 to connect the oil drain valve and the pipeline, so as to quickly discharge the oil sample in the separation container 601 after the experiment is completed. The cover plate can also be circular, with a diameter slightly larger than the barrel, and a sealing rubber ring is provided on the edge to ensure a tight fit with the top of the barrel. An axial hole is provided in the center of the cover plate to realize the connection between the drive motor 301 and the stirring shaft 302. Two mounting holes are symmetrically arranged on the edge of the cover plate to fix the drive motor 301 by bolts. The annular fixing plate 602 can be welded to the middle part of the inner wall of the barrel, and the gap between its inner diameter and the outer diameter of the separation container 601 can be controlled within 2mm. The heating coil 603 can be made of a nickel-chromium alloy, surrounding the separation container 601 and connected to an external control mechanism via high-temperature-resistant wires to achieve precise temperature control between 25°C and 110°C. Furthermore, the drive motor 301 can be equipped with a vibration-damping pad to reduce operating noise. A spline connection is used between the motor output shaft and the stirring shaft 302 to ensure stable power transmission.

[0054] In addition, the gas separation device may include a pressure monitoring device. The pressure monitoring device and the temperature monitoring device are both disposed in the separation cylinder 201 . The pressure monitoring device is used to monitor pressure data in the separation cylinder 201 .

[0055] The gas separation device may also include a temperature monitoring device, which is disposed in the separation cylinder 201 and is used to monitor temperature data in the separation cylinder 201 .

[0056] In this embodiment, dual pressure and temperature monitoring enables the establishment of an intelligent safety protection system. When pressure rises abnormally, the control mechanism automatically issues an alarm and adjusts the stirring speed, preventing the risk of explosion caused by excessive pressure within the separation cylinder 201. When temperature deviation exceeds the limit, the heating power is promptly adjusted to avoid excessive oil sample decomposition or equipment damage due to temperature runaway, significantly improving the operational safety of the device.

[0057] In addition, this embodiment dynamically adjusts separation parameters such as heating temperature and stirring speed based on real-time monitoring data. For example, by optimizing stirring intensity based on pressure changes and adjusting heating strategies based on temperature fluctuations, gas separation efficiency can be improved, effectively enhancing experimental efficiency and reducing experimental costs. Furthermore, the gas separation device can flexibly adjust pressure and temperature monitoring ranges and alarm thresholds based on different experimental requirements, adapting to separation experiments on transformer oil samples of various specifications, as well as gas separation research under different voltage and temperature conditions. This expands the device's applicability to diverse scientific research and industrial applications.

[0058] In one exemplary embodiment, a gas collection system is provided. Figures 1 to 6 As shown, the gas collection system includes a system for collecting gas generated by arc decomposition of transformer oil. The gas collection system includes a sampling component, a separation component, a storage component and a control mechanism that are connected in sequence. The sampling component, the separation component and the storage component are connected in sequence to form an integrated process of "sampling-separation-storage-control" to ensure that the gas collection process is efficient, accurate and safe.

[0059] In which, the sampling component includes a sampling pipe, a sampling pump, a one-way valve 102, a sampling container 101 and a connecting pipe 103. The sampling pipe is connected to the inlet of the one-way valve 102 through the sampling pump, and the outlet of the one-way valve 102 is connected to the sampling container 101. The inlet of the sampling pipe is used to extend into the oil sample of the transformer, and the sampling container 101 is connected to the separation component through the connecting pipe 103.

[0060] For example, the sampling pipe can be made of high-temperature resistant and corrosion-resistant polytetrafluoroethylene, and the length can be customized according to the actual size of the transformer. One end is set to a pointed mouth to facilitate sampling at the bottom of the transformer oil sample, and the other end is connected to the sampling pump through a quick-connect interface. The sampling pump can use a miniature diaphragm pump, which has low noise and oil resistance. The pump speed is adjusted by the control mechanism to achieve quantitative extraction of oil samples. A pressure gauge is provided on the side of the pump body to display the sampling pressure in real time. The one-way valve 102 can be a spherical one-way valve 102 made of stainless steel to prevent the oil sample from flowing back and ensure the uniqueness of the sampling direction. The sampling container 101 can be a cylindrical container with a sealing cover on the top. Two interfaces are set on the cover body, which respectively connect the outlet of the one-way valve 102 and the connecting pipe 103. The side of the container is marked with scale lines to facilitate observation of the volume of the oil sample.

[0061] In which, the separation component includes an input pipe 202, a micro pump 204, an output pipe 203 and a gas separation device as described in any one of claims 1 to 3, the connecting pipe 103 is connected to the inlet of the input pipe 202 through the micro pump 204, the outlet of the input pipe 202 is connected to the inlet of the separation container 601 of the gas separation device, the outlet of the separation container 601 is connected to the inlet of the output pipe 203, and the outlet of the output pipe 203 is connected to the storage component.

[0062] For example, the input pipe 202 can be made of stainless steel, one end of which is connected to the outlet of the micro pump 204 through a quick-connect interface, and the other end is connected to the top inlet of the separation container 601 of the gas separation device. A stop valve can be installed on the pipe to control the oil sample input. The micro pump 204 can be a high-precision plunger pump, which sets the flow rate through a control mechanism to slowly and stably transport the oil sample in the sampling container 101 to the separation container 601. The output pipe 203 can be made of polytetrafluoroethylene or other materials, which are not limited to this. One end of the output pipe 203 is connected to the bottom outlet of the separation container 601, and the other end is connected to the inlet of the storage component. A gas filter can be set on the pipe to filter out impurities in the separated gas.

[0063] The sampling pump, the micro pump 204, the stirring mechanism, and the heating coil 603 are electrically connected to the control structure to achieve precise control of the gas collection system. In addition, when the gas separation device includes a pressure monitoring device, its pressure monitoring device can be electrically connected to the control mechanism. When the gas separation device includes a temperature monitoring device, its temperature monitoring device can be electrically connected to the control mechanism. The control mechanism can automatically adjust the heating and stirring parameters based on the feedback from the temperature monitoring device and the pressure monitoring device to ensure the stability and efficiency of the separation process.

[0064] For example, the control mechanism may include a control mainboard, an operation interface, and an alarm module. The control mainboard may be a PLC programmable logic controller, integrating multiple control modules and having analog input / output interfaces and digital input / output interfaces. The operation interface may be equipped with a 7-inch touch screen that can display parameters such as sampling flow, separation temperature, separation pressure, and storage pressure in real time, and support users to set operating parameters such as sampling time, separation temperature, and stirring speed. The alarm module can be equipped with an audible and visual alarm. When the pressure exceeds the threshold, the temperature is abnormal, or the equipment fails, an alarm is automatically triggered and the fault information is displayed on the touch screen.

[0065] The gas collection system of this embodiment, by incorporating the aforementioned gas separation device, achieves the same technical effects as the gas separation device. Specifically, the gas collection system ensures uniform heat conduction during oil sample heating, improving gas release efficiency. The combined design of the inclined blade assembly 303 and the spiral blade assembly 304 generates strong axial and radial flows, ensuring uniform heating of the oil sample, accelerating gas release and separation, and ensuring a stable and efficient separation process. This improves the adaptability of the gas separation device, thereby enhancing the stability and efficiency of the gas collection system and enhancing its adaptability.

[0066] In one exemplary embodiment, a gas collection system is provided. Figures 1 to 6As shown, in the gas collection system, the storage component includes a pipe joint 402, a pipe sealing structure 404, and a plurality of main pipes 401 located between the pipe joint 402 and the pipe sealing structure 404. The plurality of main pipes 401 are connected in sequence, and adjacent main pipes 401 are connected through a jumper pipe 701. The main pipe 401 at the head end is connected to the input pipe 202 through the pipe joint 402, and the main pipe 401 at the end is connected to the pipe sealing structure 404. An opening is provided in the middle of each main pipe 401 for connecting to the inlet of the branch pipe. The branch pipe is provided with a first pipe valve. The outlet of the branch pipe is connected to a tank structure, and the tank structure is used to store the gas discharged from the separation component. Since the gas collection system includes multiple tank structures, multiple gas samples can be collected and stored for subsequent gas analysis. In addition, the first pipe valve makes it more convenient to control and manage the storage and release of different gases separately.

[0067] The branch pipe is detachably connected to the tank structure via a sealing structure. The tank structure includes a storage tank 501 and a second pipe valve. The inlet of the storage tank 501 is connected to the sealing structure via the second pipe valve. The sealing structure ensures the tightness of the gas storage system and prevents gas leakage.

[0068] In which, the sealing structure includes a connecting sleeve 502, a sealing sleeve 503, an installation sleeve 403 and multiple sealing rubber rings. The top of the connecting sleeve 502 is connected to the second pipe valve, the bottom of the connecting sleeve 502 is connected to the sealing sleeve 503, and multiple sealing rubber rings are arranged on the outside of the sealing sleeve 503. The installation sleeve 403 is connected to the top of the branch pipe, the installation sleeve 403 is threadedly connected to the connecting sleeve 502, and the sealing sleeve 503 cooperates with the branch pipe to realize the detachable connection between the branch pipe and the tank structure.

[0069] It should be noted that high-quality sealing rubber rings can be used for the pipe joint 402 and the sealing sleeve 503 to effectively prevent gas leakage and ensure the safety and stability of gas storage. In this gas collection system, the gas storage component adopts a modular design, and multiple main pipelines 401 are connected by jumper pipes 701, which can flexibly adjust the storage capacity and configuration according to actual needs. The modular design is not only convenient for installation and maintenance, but also makes the system highly adaptable and extensible. Each tank structure is equipped with a second pipe valve, and an independent first pipe valve is also provided on the top of the branch pipe, allowing the gas in each storage tank to be independently controlled. The independent control design improves the flexibility of operation and facilitates the classified storage and analysis of different gas samples.

[0070] In addition, a third valve can be installed on the jumper pipe 701 of this embodiment. For example, this third valve can be an electric ball valve, made of the same material as the main pipe 401, equipped with an explosion-proof electric actuator, and can be remotely opened and closed by a control mechanism. The third valve's automatic adjustment function balances the pressure in the main pipe 401 in real time, preventing the risk of pipeline damage or gas leakage caused by localized excessive pressure.

[0071] In an exemplary embodiment, a gas collection method is provided. The gas collection method collects gas generated by arc decomposition of transformer oil through the above-mentioned gas collection system.

[0072] refer to Figures 1 to 6 As shown, during the preparation stage, the sampling pipe can be inserted into the transformer oil sample. Before insertion, ensure that all pipes and valves of the gas collection system are in a closed state to avoid initial gas leakage.

[0073] During the sampling phase, the control mechanism can be activated to extract an oil sample from the transformer oil sample via a sampling pump. The oil sample enters the sampling pipe through the sampling pump and enters the sampling container 101 through a one-way valve 102. After the oil sample in the sampling container 101 is prepared, it is guided to the separation component through the connecting pipe 103.

[0074] During the gas separation phase, the heating device is activated to heat the separation container 601 within the separation cylinder 201. The fixed plate 602 and heating ring 603 provide uniform heat to heat the oil sample. The stirring mechanism is activated, and the drive motor 301 drives the stirring shaft 302 to rotate, thereby driving the inclined blade assembly 303 and spiral blade assembly 304 on the stirring shaft 302 to rotate, ensuring that the oil sample is evenly mixed within the separation container 601 and accelerating gas release. The micro pump 204 can also be activated to evenly introduce the oil sample into the top of the separation cylinder 2012 through the input pipe 202. At the same time, gas begins to enter the storage assembly through the output pipe 203. During this process, the control mechanism heats and controls the temperature of the transformer oil based on the data monitored by the temperature monitoring device and the pressure monitoring device, with the temperature range being 25°C-110°C.

[0075] During the gas storage phase, the separated gas enters the main pipe 401 at the head end of multiple main pipes 401 through a pipe joint 402. Adjacent main pipes 401 are connected by a jumper pipe 701. Each main pipe 401 can be connected to a corresponding tank structure via a branch pipe, allowing the storage assembly to be configured with multiple tank structures. Each tank structure is connected to the main pipe 401 via a first pipe valve and a branch pipe, and is equipped with an independent second pipe valve and sealing structure to ensure the safety and sealing of gas storage. According to experimental requirements, the first pipe valve and second pipe valve of each tank structure can be controlled separately to achieve independent storage of different gas samples.

[0076] Furthermore, during the gas collection process, pressure and temperature monitoring devices monitor the pressure and temperature inside the separation cylinder 201 in real time and feed this data back to the control mechanism. Based on this real-time data, the control mechanism automatically adjusts the operating parameters of the heating and stirring mechanisms to ensure a stable and efficient separation process.

[0077] After the sampling and separation process is complete, all pipes and valves are closed. The control system records and saves all monitoring data for subsequent analysis. During the data analysis phase, the collected gas samples are sent to a gas analyzer for qualitative and quantitative analysis. Based on the analysis results, the decomposition products of transformer oil under different arc and temperature conditions are evaluated, providing data support for safe transformer operation.

[0078] In the gas collection method of this embodiment, through phased and orderly operation, combined with the coordinated work of various components of the gas collection system, precise control of the entire process of arc decomposition transformer oil gas from sampling, separation to storage is achieved. In the preparation stage, all pipes and valves are strictly closed to prevent initial gas leakage; in the sampling stage, the sampling pump and the one-way valve 102 are used to accurately extract the oil sample; in the separation stage, the heating device, the stirring mechanism and the micro pump 204 are coordinated to make the oil sample evenly heated and quickly release gas, and the working parameters are dynamically adjusted based on the temperature and pressure monitoring data to ensure the improvement of separation efficiency; in the storage stage, the independently controlled pipe valves and sealing structures are used to prevent gas cross contamination and leakage, so as to better ensure the completeness of gas collection and provide reliable samples for subsequent analysis.

[0079] Furthermore, this method uses pressure and temperature monitoring devices to collect real-time pressure and temperature data within the separation cylinder 201 and feeds this data back to the control mechanism, which automatically adjusts the operating parameters of the heating and stirring mechanisms accordingly. Compared to traditional manual adjustment methods, this method improves separation efficiency and effectively avoids incomplete gas separation caused by parameter fluctuations, ensuring the consistency and accuracy of experimental data.

[0080] Furthermore, the storage assembly utilizes a modular design, with multiple main pipelines 401 interconnected via jumper pipes 701. Each main pipeline 401 can connect to multiple tank structures, each equipped with independent first and second valves. Experimenters can flexibly select storage tanks based on gas sample type and experimental requirements, enabling categorized storage and independent control of different gas samples. This design not only facilitates sample management and access but also prevents interference between samples, making it particularly suitable for multi-group comparative experiments. This can significantly improve sample analysis efficiency and provide richer, more accurate data support for the precise diagnosis of transformer faults.

[0081] Furthermore, the gas collection system emphasizes sealing design at every stage, such as the use of high-quality rubber seals in the pipe joints 402 and sealing structures, as well as the sealed connections of the tank structure, to keep the overall leakage rate extremely low. During the collection process, a pressure monitoring device monitors system pressure in real time. When pressure exceeds a safety threshold, the control mechanism automatically initiates protective measures, such as adjusting pipe valves and reducing stirring speed, to prevent safety accidents such as explosions caused by excessive pressure, thereby ensuring the safety of operators and equipment.

[0082] Furthermore, the method's control mechanism records pressure, temperature, flow rate, and other monitoring data in real time during the gas collection process, and preserves them intact after sampling and separation. This data provides a wealth of fundamental information for subsequent qualitative and quantitative analysis of gas samples. Through in-depth analysis of transformer oil decomposition products under different arc and temperature conditions, the method can accurately assess the transformer's operating status and identify potential fault hazards in advance. This provides a scientific and reliable data basis for the safe operation and maintenance of the transformer, which is of great significance for improving the stability and reliability of the power system.

[0083] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0084] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0085] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A gas separation device, characterized in that: The gas separation device includes a separation cylinder and a stirring mechanism. A separation container and a heating device are provided in the separation cylinder. The heating device is used to heat the separation container, and the stirring mechanism is used to stir the oil sample in the separation container. The heating device includes a fixed plate and a heating ring. The fixed plate is constructed as an annular plate and is fixedly connected to the inner wall of the separation cylinder. The separation container is detachably connected to the fixed plate. The heating ring is sleeved on the outside of the separation container. The stirring mechanism includes a drive motor and a stirring device. The drive motor is arranged on the upper end surface of the top of the separation cylinder. The stirring device includes a stirring shaft, an inclined blade assembly and a spiral blade assembly. The output end of the drive motor is connected to the stirring shaft. The inclined blade assembly and the spiral blade assembly are both arranged on the stirring shaft, and the spiral blade assembly is located above the inclined blade assembly.

2. The gas separation device according to claim 1, characterized in that: The separation cylinder includes a cylinder body, a bottom plate and a cover plate. The cover plate is arranged on the top of the cylinder body. The driving motor is fixed to the cover plate. The bottom plate is detachably connected to the cylinder body.

3. The gas separation device according to claim 1 or 2, characterized in that: The gas separation device includes a pressure monitoring device, the pressure monitoring device and the temperature monitoring device are both arranged in the separation cylinder, and the pressure monitoring device is used to monitor the pressure data in the separation cylinder; and / or, The gas separation device includes a temperature monitoring device, which is arranged in the separation cylinder and is used to monitor temperature data in the separation cylinder.

4. A gas collection system, characterized in that: The gas collection system is used to collect gas generated by arc decomposition of transformer oil. The gas collection system includes a sampling component, a separation component, a storage component and a control mechanism that are connected in sequence. The sampling component, the separation component and the storage component are connected in sequence. The sampling assembly includes a sampling pipe, a sampling pump, a one-way valve, a sampling container and a connecting pipe. The sampling pipe is connected to the inlet of the one-way valve through the sampling pump, and the outlet of the one-way valve is connected to the sampling container. The inlet of the sampling pipe is used to extend into the oil sample of the transformer. The sampling container is connected to the separation assembly through the connecting pipe. The separation assembly comprises an input pipe, a micro pump, an output pipe, and the gas separation device according to any one of claims 1 to 3, wherein the connecting pipe is connected to the inlet of the input pipe through the micro pump, the outlet of the input pipe is connected to the inlet of the separation container of the gas separation device, the outlet of the separation container is connected to the inlet of the output pipe, and the outlet of the output pipe is connected to the storage assembly; The sampling pump, the micro pump, the stirring mechanism, and the heating ring are electrically connected to the control structure respectively.

5. The gas collection system according to claim 4, characterized in that: When the gas separation device further includes a pressure monitoring device, the pressure monitoring device is electrically connected to the control mechanism; and / or, When the gas separation device includes a temperature monitoring device, the temperature monitoring device is electrically connected to the control mechanism.

6. The gas collection system according to claim 4 or 5, characterized in that: The storage assembly includes a pipeline joint, a pipeline blocking structure, and a plurality of main pipelines located between the pipeline joint and the pipeline blocking structure; The plurality of main pipelines are connected in sequence, and adjacent main pipelines are connected via a jumper pipeline. The main pipeline at the head end is connected to the input pipeline via a pipeline joint, and the main pipeline at the tail end is connected to the pipeline blocking structure. An opening is provided in the middle of each main pipeline for connecting to the inlet of the branch pipeline. A first pipe valve is provided on the branch pipeline. The outlet of the branch pipeline is connected to a tank structure, which is used to store the gas discharged from the separation component.

7. The gas collection system according to claim 6, characterized in that: The branch pipeline is detachably connected to the tank structure via a sealing structure, wherein the tank structure includes a storage tank and a second pipe valve, and the inlet of the storage tank is connected to the sealing structure via the second pipe valve.

8. The gas collection system according to claim 7, characterized in that: The sealing structure includes a connecting sleeve, a sealing sleeve, a mounting sleeve and multiple sealing rubber rings. The top of the connecting sleeve is connected to the second pipe valve, the bottom of the connecting sleeve is connected to the sealing sleeve, and multiple sealing rubber rings are arranged on the outside of the sealing sleeve. The mounting sleeve is connected to the top of the branch pipe, the mounting sleeve is threadedly connected to the connecting sleeve, and the sealing sleeve cooperates with the branch pipe to realize a detachable connection between the branch pipe and the tank structure.

9. The gas collection system according to claim 6, characterized in that: The jumper pipe is provided with a third pipe valve.

10. A gas collection method, characterized in that: The gas collection method collects the gas generated by arc decomposition of transformer oil through the gas collection system according to any one of claims 4 to 9.

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