Movable degassing unit structure for gas dissolved in oil

Abstract

The utility model relates to the field of oil-gas separation, in particular to a movable degassing unit structure for gas dissolved in oil. The device comprises a degassing module and a cabinet, a degassing chamber for separating gas from an oil sample is arranged in the degassing module, and the cabinet is used for accommodating the degassing module; at least one pair of diagonally-arranged guide sliding rails are arranged on the inner wall of the cabinet, the bottom of the degassing module is slidably connected to the guide sliding rails, clamping structures are arranged at the tail ends of the guide sliding rails, the degassing module is provided with clamped parts matched with the degassing module, and when the degassing module slides to an operation position, the clamping structures and the clamped parts are automatically locked. Movement of the degassing module is limited in the horizontal direction. The technical effect of guaranteeing the structural stability and the sealing integrity of the degassing chamber in the transportation and operation process is achieved.

Description

Technical Field

[0001] The present application relates to the field of oil-gas separation, and in particular to a mobile degassing unit structure for gas dissolved in oil. Background Art

[0002] Dissolved Gas Analysis (DGA) is the primary and most effective method for diagnosing and assessing latent faults within large oil-immersed electrical equipment, such as power transformers and instrument transformers. By precisely measuring the composition and content of various characteristic gases dissolved in insulating oil, it can accurately determine whether the equipment is susceptible to potential faults such as overheating and discharge. This provides critical decision-making support for condition-based maintenance and fault warnings, playing an irreplaceable role in ensuring the safe and stable operation of the power grid.

[0003] Traditionally, DGA analysis is typically performed in a central laboratory, requiring on-site personnel to extract oil samples, seal them, and transport them long distances to the laboratory. This process is not only time-consuming and time-consuming, but also carries the risk of secondary contamination of the oil samples during transportation and transfer, potentially affecting the accuracy of the analysis results. To overcome these shortcomings, mobile, online DGA devices that can be mounted on inspection vehicles or integrated into outdoor monitoring cabinets have emerged. One of the core components of such devices is the degassing unit, whose function is to quickly and efficiently separate the dissolved gases in the oil sample in a field environment and send them to the subsequent gas chromatograph or spectral sensor for analysis. Therefore, the separation efficiency and sealing reliability of the degassing unit are the fundamental prerequisites for ensuring the accuracy of the analysis results of the entire mobile DGA device.

[0004] Currently, existing mobile dissolved gas degassing units (DGOs) typically utilize a traditional mechanical fastening method for integrated installation. Specifically, the degassing unit slides onto rails with several mounting holes. During installation, the operator must push the entire degassing unit into the cabinet, painstakingly align the mounting holes on the rails with the pre-threaded holes on the degassing unit, and then use a tool to individually tighten multiple bolts to secure the rails to the degassing unit.

[0005] However, practical experience has revealed that this traditional bolted flange fixing method has the following serious technical drawbacks: 1. The installation process is cumbersome and prone to measurement errors: Bolting holes and tightening the bolts is entirely manual, which is time-consuming and labor-intensive, especially in the confined space of outdoor cabinets. More importantly, the lengthy installation and commissioning process can leave the oil line interface exposed for extended periods, increasing the risk of air contamination of the oil sample, potentially compromising the accuracy of subsequent gas separation. 2. It compromises the sealing of the core separation function: Continuous vibrations propagate throughout the equipment, concentrating their effects on critical sealing areas such as the degassing unit's vacuum chamber, gas piping, and oil line interface. This can easily cause micro-displacement, fatigue, or permanent deformation in components such as the gasket, compromising the vacuum seal of the entire system. Once the seal fails, outside air can intrude into the vacuum degassing chamber, severely contaminating the trace characteristic gases in the measured oil sample. This can lead to significant deviations in the analysis results, rendering the DGA analysis meaningless and even resulting in erroneous equipment fault diagnosis. These drawbacks directly threaten the reliability and accuracy of the gas separation process.

[0006] In summary, the existing installation and fixation methods for mobile degassing units are more than just a simple mechanical connection issue; the resulting structural instability has become a bottleneck that directly compromises the accuracy, reliability, and lifespan of the gas separation process. Therefore, a new structural solution is urgently needed in this field that not only enables quick and convenient installation of degassing units but, more importantly, must provide stable and reliable support and locking for the degassing units in complex transportation and mobile environments, ensuring that their core gas separation function can be accurately and stably performed at all times. Utility Model Content

[0007] In order to ensure the structural stability and sealing integrity of the degassing unit during transportation and operation, the present application provides a mobile degassing unit structure for dissolved gas in oil.

[0008] The present application provides a mobile degassing unit structure for dissolved gas in oil, which adopts the following technical solution:

[0009] A mobile degassing unit structure for dissolved gas in oil, comprising:

[0010] A degassing module, wherein a degassing chamber is provided inside the degassing module for separating gas from the oil sample;

[0011] a cabinet for accommodating the degassing module;

[0012] The inner wall of the cabinet is provided with at least one pair of diagonally arranged guide rails, and the degassing module is slidably connected to the guide rails; the ends of the guide rails are further provided with a clamping structure, and the degassing module is provided with a clamped portion that cooperates with the clamping structure;

[0013] When the degassing module slides along the guide rail to the operating position, the clamping structure and the clamped part are automatically locked to limit the movement of the degassing module in the horizontal direction, thereby ensuring the structural stability and sealing integrity of the degassing chamber during transportation and operation.

[0014] By adopting this technical solution, the traditional cumbersome bolt tightening method is transformed into a simple "push-to-lock" operation, greatly improving on-site installation efficiency and ensuring the precise positioning of the degassing module. More importantly, the automatic locking structure effectively suppresses the impact of transportation bumps on the equipment, thereby directly protecting the core structure and sealing of the degassing chamber, fundamentally ensuring the reliability of the gas separation process and the accuracy of the analysis results.

[0015] Optionally, the guide rail includes a mounting plate, a support plate and a limit plate. The mounting plate can be detachably mounted on the cabinet. The support plate is fixed to one side of the mounting plate. The cross-section of the support plate is arranged in a "7" shape. The horizontal section of the support plate is slidably connected to the degassing module. The limit plate is fixed to the side of the support plate. The clip structure is installed at the end of the limit plate.

[0016] By adopting this technical solution, the guide rail system has the advantages of modularity and easy maintenance. At the same time, the "7"-shaped support plate structure can simultaneously provide stable vertical support and lateral guidance, ensuring the smooth sliding process of the degassing module. Installing the clip structure on the limit plate provides it with a solid mounting base, ensuring the long-term reliability of the locking function.

[0017] Optionally, the side of the supporting plate is slidably connected to the bottom of the degassing module.

[0018] By adopting the above technical solution, a larger area of ​​"surface contact" guidance is formed between the degassing module and the guide rail. Compared with line contact or point contact, this can significantly reduce the lateral shaking gap during the sliding process, further improving the guiding accuracy and structural stability in the final locked state.

[0019] Optionally, the side of the supporting plate facing the inner wall of the cabinet is hollow.

[0020] By adopting the above technical solution, the weight of the guide rail itself is effectively reduced while ensuring sufficient supporting strength, achieving lightweighting; at the same time, the hollow area can be used as a concealed wiring trough, which is convenient for the regular arrangement of various cables and optimizes the space layout inside the cabinet.

[0021] Optionally, the supporting plate is located in the middle of the mounting plate, and first mounting holes are provided on the upper and lower sides of the mounting plate, and the mounting plate is detachably connected to the inner wall of the cabinet through the first mounting holes.

[0022] By adopting the above technical solution, by setting the fixing points on the upper and lower sides of the mounting plate, a stable mounting structure with a wide base is formed. This can extremely effectively resist the overturning moment generated by the cantilever weight of the degassing module, ensuring the long-term stability of the connection between the entire guide system and the cabinet wall.

[0023] Optionally, the clamping structure includes a mounting section, a curved section and an inclined plate section, the mounting section is fixed on the guide rail, the curved section connects the mounting section and the inclined plate section so that the inclined plate section has deformation space, the inclined plate section is inclined downward in the height direction and extends along the length direction of the guide rail, and the free end of the inclined plate section faces the degassing module.

[0024] By adopting the above technical solution, a passive elastic automatic locking device with simple structure and reliable operation is formed. It utilizes the elastic deformation of the curved segment and the leverage of the inclined plate segment to achieve automatic locking and unlocking without any external energy source, and has extremely high reliability and an extremely long service life.

[0025] Optionally, the free end of the inclined plate segment is connected to a hook segment, and the hook segment extends obliquely upward.

[0026] By adopting the above technical solution, the hook section forms a smooth guiding slope. When the degassing module is pushed in, it can smoothly press down the snap-on structure, effectively avoiding impact, scratching or jamming during the installation process, and improving the smoothness of operation and user experience.

[0027] Optionally, the clamped portion is configured as a clamping groove that matches the inclined plate segment and the hook segment.

[0028] By adopting the above technical solution, the locking method is upgraded from a simple blocking limit to a precise "shape lock" engagement. The precise matching of the two forms a positive mechanical interlock that can resist impact and vibration from multiple directions. Its locking effect is far better than friction or blocking, providing the highest level of stability guarantee for the equipment.

[0029] Optionally, the mounting section is provided with a second mounting hole extending along the length direction of the guide rail, and the mounting section is detachably connected to the guide rail through the second mounting hole.

[0030] By adopting the above technical solution, the elongated mounting hole gives the snap-fit ​​structure the characteristic of fine-tuning its position during installation, which can effectively compensate for the accumulated tolerances generated during the manufacturing and assembly processes, ensuring that the locking position can ultimately be adjusted to the optimal state, thereby ensuring the reliability of the locking function.

[0031] Optionally, the inclined plate section is provided with a deformation hole.

[0032] By adopting the above technical solution, the cross-sectional characteristics of the inclined plate section are changed by opening deformation holes, so that its elastic force and stiffness can be accurately adjusted, thereby optimizing the locking tightness and operating feel, so that it is easy for users to operate while ensuring the locking force.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] Transforming traditional, cumbersome bolt tightening into a simple "push-and-lock" operation significantly improves on-site installation efficiency and ensures precise positioning of the degassing module. More importantly, the automatic locking mechanism effectively mitigates impacts from transportation bumps on the equipment, directly protecting the core structure and sealing of the degassing chamber, fundamentally ensuring the reliability of the gas separation process and the accuracy of analytical results.

[0035] The clamping structure and the clamped part are automatically locked, which can limit the movement of the degassing module in the horizontal direction, ensuring the structural stability of the degassing chamber during transportation and operation, and avoiding damage to the vacuum sealing of the degassing unit due to structural instability;

[0036] Ensure the sealing integrity of the degassing chamber during transportation and operation, prevent outside air from invading the vacuum degassing chamber and contaminating the trace characteristic gases in the tested oil sample, and ensure the accuracy and reliability of the gas separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a slide rail in the related art.

[0038] Figure 2 This is a front view of the structure of a mobile degassing unit for dissolved gas in oil.

[0039] Figure 3 It is a structural schematic diagram of the front side of the guide rail in an embodiment of the present application.

[0040] Figure 4 It is a structural schematic diagram of the back side of the guide rail in an embodiment of the present application.

[0041] Figure 5 yes Figure 3 Enlarged schematic diagram of part A.

[0042] Figure 6This is a structural diagram that mainly shows the card slot (part of the guide rail is hidden).

[0043] Description of reference numerals:

[0044] 1. Slide rail; 11. Fixing hole; 2. Degassing module; 3. Cabinet; 4. Guide rail; 41. Mounting plate; 411. First mounting hole; 42. Support plate; 421. Connecting plate; 43. Limiting plate; 5. Snap-fit ​​structure; 51. Mounting section; 511. Second mounting hole; 52. Arc section; 53. Inclined plate section; 531. Deformation hole; 54. Hook section; 6. Snap-fit ​​groove. DETAILED DESCRIPTION

[0045] The following will be combined with the Figure 1-6 , further describing the technical solutions in the embodiments of the present invention in detail. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Those skilled in the art can fully combine the embodiments of the present invention, and other embodiments obtained without creative work are also within the scope of protection of the present invention.

[0046] In the related art, refer to Figure 1 A slide rail 1 is fixed to a cabinet. Typically, at least one pair of slide rails 1 is provided within the cabinet. A degassing module is slidably connected to the slide rail 1. Fixing holes 11 are defined in the slide rail 1. When the degassing module 2 is moved to a predetermined position, the slide rail 1 and the degassing module are connected through the fixing holes 11, thereby securing the degassing module. Optionally, the degassing module may be a degassing module known in the prior art or a degassing module disclosed in a patent filed by the applicant on the same day.

[0047] However, this type of installation and fixing method is cumbersome and prone to introducing measurement errors. On the other hand, it will destroy the sealing of the core separation function and cause structural instability, becoming a bottleneck that directly damages the accuracy, reliability and equipment life of the gas separation process.

[0048] This application primarily utilizes a guide rail and a locking mechanism that work together to provide a secure and reliable support and lock for the degassing module in complex transportation and mobile environments, ensuring its core gas separation function is accurately and stably performed at all times. The following further describes this application in detail.

[0049] The mobile degassing unit structure of dissolved gas in oil provided in the embodiment of the present application is as follows: Figure 2 and Figure 3The degassing module 2 and the cabinet 3 are configured to accommodate the degassing module 2. The degassing module 2 houses a degassing chamber for separating gas from oil samples. The cabinet 3 houses the degassing module 2. The inner wall of the cabinet 3 is provided with two sets of diagonally spaced guide rails 4, each with a snap-fit ​​structure 5 at its end. The degassing module 2 includes a snap-fit ​​portion that mates with the snap-fit ​​structure 5. The guide rails 4 and the snap-fit ​​structure 5 form a sliding, locking engagement between the degassing module 2 and the cabinet 3. This structure, by constraining the sliding trajectory through the guide rails 4 and eliminating horizontal and vertical degrees of freedom through the snap-fit ​​structure 5, addresses the vibration-induced loosening problem associated with traditional fixing methods and ensures the structural stability and sealing integrity of the degassing chamber during transportation and operation.

[0050] Specifically, the guide rail 4 comprises a mounting plate 41, a support plate 42, and a stop plate 43. The mounting plate 41 is a long, flat plate with first mounting holes 411 arranged along its length on its upper and lower edges. The mounting plate 41 is secured to the inner wall of the cabinet 3 via threaded fasteners. Alternatively, the mounting plate 41 can employ a snap-on, quick-locking mechanism, with elastic hooks on its edges engaging with pre-set grooves in the cabinet 3.

[0051] The support plate 42 is integrally connected to the outer middle portion of the mounting plate 41. Its cross-section, composed of horizontal and vertical sections, forms a "7" shape. The degassing module 2 is slidably connected to the two pairs of diagonally arranged horizontal sections of the support plate 42 to limit vertical displacement of the degassing module 2. In a preferred embodiment, the side surfaces of the vertical support plates 42 are slidably connected to the degassing module 2, significantly reducing lateral play during sliding, further improving guidance accuracy and structural stability in the final locked state.

[0052] Reference Figure 2 and Figure 4 Preferably, a hollow cavity is formed between the vertical section and the inner wall of the cabinet 3 to reduce the weight of the support plate 42. At the same time, the front and end of the support plate 42 are covered with connecting plates 421 to strengthen the support plate 42 and further improve the installation stability of the degassing module 2.

[0053] Reference Figure 2 and Figure 3 The limiting plate 43 is integrally formed on the side of the vertical section, and a gap of 3 mm is maintained between the plate surface and the degassing module 2. The clamping structure 5 is installed at the end of the limiting plate 43. When the degassing module 2 moves to the preset position, the clamping structure 5 can clamp and fix the degassing module 2.

[0054] Reference Figure 3 and Figure 5The clamping structure 5 is composed of a mounting section 51, a curved section 52, and a sloping plate section 53, connected in sequence. The mounting section 51 defines a second mounting hole 511, which is an elongated oval shape to accommodate installation errors. The mounting hole 511 is bolted to the end of the support plate 42. The curved section 52 is stamped from 0.8 mm thick stainless steel sheet with a 2 cm radius to provide room for elastic deformation. The sloping plate section 53 is tilted downward by 15-20 degrees, and its end is bent to form an upward-curving hook section 54.

[0055] Reference Figure 2 and Figure 5 Preferably, the degassing module 2 is configured as a snap-fitting groove 6 that matches the inclined plate section 53 and the hook section 54. Figure 6 Optionally, the snap-fit ​​groove 6 can be formed by a groove cut into the outer wall of the degassing module 2. In other embodiments, a snap-fit ​​can also be installed on the outer wall of the degassing module, forming a snap-fit ​​groove to secure the degassing module to the snap-fit ​​structure. When the degassing module slides into the operating position, the leading edge of the snap-fit ​​groove first presses the inclined plate section inward, causing it to bend. The hook section then engages the recessed area inside the snap-fit ​​groove to form an interference fit (not shown). The snap-fit ​​structure 5, through the combination of the mounting section 51, the curved section 52, and the inclined plate section 53, achieves self-locking through the elastic deformation of the curved section 52, eliminating the horizontal freedom of the degassing module 2. Specifically, the curved section 52 can be made of spring steel or stainless steel, which have excellent elasticity. Once installed, the curved section 52 attempts to return to its original curvature, generating a continuous elastic restoring force. It is this elastic restoring force that securely holds the degassing module 2 in place, achieving self-locking and effectively preventing horizontal movement or loosening.

[0056] In a preferred embodiment, the inclined plate segment 53 is provided with a deformable hole 531, which can be an oblong hole or an elliptical hole. By providing the deformable hole 531 and changing the cross-sectional characteristics of the inclined plate segment 53, its elastic force and rigidity can be precisely adjusted, thereby optimizing the locking tightness and operating feel, ensuring a secure locking force while also facilitating user operation.

[0057] The implementation principle of this embodiment is: through the synergistic effect of the guide rail 4 and the clamping structure 5, the traditional cumbersome bolt-to-hole fastening method is transformed into a simple "one-push-to-lock" operation, which greatly improves the installation and deployment efficiency of the degassing module 2 on site and ensures that it can be accurately guided to the preset operating position every time. More importantly, the automatic locking structure provides strong and reliable support and limitation for the degassing module 2, especially its cantilevered tail, which effectively suppresses harmful vibrations of the equipment during bumpy transportation. This structural stability directly guarantees the structural integrity of the core components (such as the vacuum degassing chamber) inside the degassing module 2 and the sealing integrity of key interfaces, fundamentally solving the industry pain points of contamination of the gas separation process and inaccurate analysis results due to transportation vibration, and significantly improving the reliability and analysis accuracy of the mobile DGA device.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mobile degassing unit structure for dissolved gas in oil, characterized in that: include: A degassing module (2), wherein a degassing chamber for separating gas from the oil sample is provided inside the degassing module (2); A cabinet (3) for accommodating the degassing module (2); The cabinet (3) has at least one pair of diagonally arranged guide rails (4) on its inner wall, and the degassing module (2) is slidably connected to the guide rails (4); a clamping structure (5) is further provided at the end of the guide rails (4), and the degassing module (2) has a clamped portion that cooperates with the clamping structure (5); When the degassing module (2) slides along the guide rail (4) to the operating position, the clamping structure (5) and the clamped portion are automatically locked to limit the movement of the degassing module (2) in the horizontal direction, thereby ensuring the structural stability and sealing integrity of the degassing chamber during transportation and operation.

2. The mobile degassing unit structure for dissolved gas in oil according to claim 1, characterized in that: The guide rail (4) includes a mounting plate (41), a supporting plate (42) and a limiting plate (43); the mounting plate (41) is detachably mounted on the cabinet (3); the supporting plate (42) is fixed to one side of the mounting plate (41); the supporting plate (42) has a "7"-shaped cross section; a horizontal section of the supporting plate (42) is slidably connected to the degassing module (2); the limiting plate (43) is fixed to the side of the supporting plate (42); and the clamping structure (5) is mounted at the end of the limiting plate (43).

3. The mobile degassing unit structure for dissolved gas in oil according to claim 2, characterized in that: The side surface of the supporting plate (42) is slidably connected to the degassing module (2).

4. The mobile degassing unit structure for dissolved gas in oil according to claim 3, characterized in that: The side of the supporting plate (42) facing the inner wall of the cabinet (3) is hollow.

5. The mobile degassing unit structure for dissolved gas in oil according to claim 2, characterized in that: The supporting plate (42) is located in the middle of the mounting plate (41), and first mounting holes (411) are provided on the upper and lower sides of the mounting plate (41). The mounting plate (41) is detachably connected to the inner wall of the cabinet (3) through the first mounting holes (411).

6. The mobile degassing unit structure for dissolved gas in oil according to claim 1, characterized in that: The clamping structure (5) comprises a mounting section (51), a curved section (52) and an inclined plate section (53); the mounting section (51) is fixed on the guide rail (4); the curved section (52) connects the mounting section (51) and the inclined plate section (53) so that the inclined plate section (53) has a deformation space; the inclined plate section (53) is arranged to be inclined downward in a height direction and extends along the length direction of the guide rail (4); and the free end of the inclined plate section (53) faces the degassing module (2).

7. The mobile degassing unit structure for dissolved gas in oil according to claim 6, characterized in that: The free end of the inclined plate section (53) is connected to a hook section (54), and the hook section (54) extends obliquely upward.

8. The mobile degassing unit structure for dissolved gas in oil according to claim 7, characterized in that: The clamped portion is configured as a clamping groove (6) that matches the inclined plate section (53) and the clamping hook section (54).

9. The mobile degassing unit structure for dissolved gas in oil according to claim 6, characterized in that: The mounting section (51) is provided with a second mounting hole (511) extending along the length direction of the guide rail (4), and the mounting section (51) is detachably connected to the guide rail (4) via the second mounting hole (511).

10. The mobile degassing unit structure for dissolved gas in oil according to claim 6, characterized in that: The inclined plate section (53) is provided with a deformation hole (531).

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