Degassing device for dissolved gas in transformer oil

Abstract

The utility model relates to the technical field of mechanical equipment fixing and supporting, in particular to a degassing device for dissolved gas in transformer oil, which comprises a degassing tank, a stirring mechanism and a support, an accommodating channel for accommodating the stirring mechanism is arranged in the middle of the support, and a positioning convex ring is arranged on the inner wall to divide the support into an upper part and a lower part which are used for accommodating an active stirring magnetic rotor and the stirring mechanism respectively; a first fastening hole matched with the degassing tank and a second fastening hole fixed to an external platform are formed in the top and the bottom of the support respectively, a damping gasket is arranged between the degassing tank and the support, mounting discs are arranged at the upper end and the lower end of the support, heat dissipation holes are formed in the side wall of the containing channel, a corrosion-resistant layer is arranged on the outer surface of the support, and a detachable fixing disc is arranged at the lower end of the positioning convex ring. The active stirring magnetic rotor is provided with a circular groove for mounting a permanent magnet, and a passive stirring magnetic rotor is arranged in the degassing tank. The technical effects that structural components are reasonably arranged, mounting and fixing are convenient, the sealing performance and the heat dissipation performance are guaranteed, the corrosion resistance is improved, and degassing of the dissolved gas in the transformer oil is effectively achieved are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment fixing and supporting, and in particular to a degassing device for gas dissolved in transformer oil. Background Art

[0002] In recent years, with the construction of ultra-high voltage (UHV) power grids, an increasing number of high-voltage transformers have been put into operation. As key equipment in power grids, the safe and stable operation of transformers is crucial. Dissolved gas components in transformer oil are indicators of the transformer's internal condition and the severity of faults. Analyzing and testing these components is one of the most effective ways to assess transformer operating conditions and diagnose equipment faults.

[0003] However, traditional mounting methods for degassing devices containing dissolved gases in transformer oil have significant drawbacks. Ordinary carbon steel brackets are easily corroded by transformer oil and any corrosive gases present, leading to rust and corrosion, which compromises the bracket's structural integrity and service life. Simple welding connections hinder installation, disassembly, and movement, significantly hindering subsequent maintenance and inspection. Furthermore, the lack of a specially adapted mounting bracket can lead to instability during operation, making it susceptible to external factors such as shaking that can affect degassing efficiency and stability, further impacting the detection results of dissolved gases in transformer oil. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present application provides a degassing device for dissolved gas in transformer oil. The bracket is separated into a first and a second accommodating channels through an axial accommodating channel and a positioning convex ring, which respectively accommodate the active stirring magnetic rotor and the stirring mechanism, thereby realizing orderly installation of components; the first fastening hole on the top is adapted to the degassing tank, and the second fastening hole on the bottom is fixed to the platform to ensure stable operation of the device and improve degassing efficiency.

[0005] This application is achieved through the following technical solutions:

[0006] A degassing device for dissolved gas in transformer oil comprises a degassing tank, a stirring mechanism and a bracket, wherein a receiving channel for accommodating the stirring mechanism is axially arranged in the middle portion of the bracket, and a positioning protrusion ring for mounting the stirring mechanism is provided on the inner wall of the receiving channel; the positioning protrusion ring divides the receiving channel into a first receiving channel and a second receiving channel from top to bottom, the first receiving channel being used to accommodate an active stirring magnetic rotor provided at the output end of the stirring mechanism, and the second receiving channel being used to accommodate the stirring mechanism; a first fastening hole adapted to the degassing tank is provided at the top of the bracket, and a second fastening hole for fixing to an external platform is provided at the bottom.

[0007] By adopting this technical solution, the degassing device features an axially oriented receiving channel in the middle of the bracket. A positioning collar on the inner wall of the channel allows for precise installation of the stirring mechanism, dividing the channel into a first and a second receiving channel, each housing the active stirring magnetic rotor and the stirring mechanism, respectively. This ensures the orderly layout of all components and stable operation. The first fastening hole at the top of the bracket accommodates the degassing tank, providing a secure connection between the two. The second fastening hole at the bottom secures the degassing tank to an external platform, enhancing the overall stability of the device. This structural design makes the degassing device more reliable during operation, effectively improving the efficiency and quality of degassing dissolved gases in transformer oil, extending the device's service life, and reducing maintenance costs.

[0008] Optionally, a shock-absorbing gasket is provided between the degassing tank and the bracket.

[0009] The above technical solution effectively cushions vibrations generated during the degassing process, reduces component loosening due to vibration, lowers the risk of equipment damage, and ensures the stability and reliability of the degassing device. It also reduces noise generated by vibration and improves the working environment.

[0010] Optionally, a first mounting plate is provided at the upper end of the bracket and a second mounting plate is provided at the lower end, the first fastening hole is provided on the first mounting plate, and the second fastening hole is provided on the second mounting plate.

[0011] By adopting this technical solution, a first mounting plate is provided at the upper end of the bracket, and a second mounting plate is provided at the lower end. The first fastening hole is located on the first mounting plate, and the second fastening hole is located on the second mounting plate. This structural design facilitates the installation and securing of the degassing device. The first mounting plate securely connects the bracket to the degassing tank, ensuring the integrity of the device. The second mounting plate securely secures the bracket to the external platform, enhancing the stability of the device and preventing shaking or displacement during operation, thus providing a stable working environment for degassing dissolved gases in transformer oil.

[0012] Optionally, the bracket has a circular structure, and the first mounting plate and the second mounting plate have a square structure.

[0013] By adopting this technical solution, the bracket adopts a circular structure, which can rationally arrange the internal structure within a limited space and provide stable support for the stirring mechanism. The first and second mounting plates are square in structure. The square mounting plates have a larger flat mounting area, which can better fit the degassing tank and the external platform, improving the stability and firmness of the installation. This makes the degassing device more stable during operation, reduces shaking and displacement, and ensures smooth degassing operation.

[0014] Optionally, a plurality of heat dissipation holes are evenly distributed on the side walls of the accommodating channel.

[0015] By adopting the above technical solution, a number of heat dissipation holes are evenly distributed on the sidewalls of the receiving channel, effectively reducing the heat generated by the stirring mechanism during operation. During operation, the stirring mechanism generates a large amount of heat. The provision of heat dissipation holes allows air to circulate in and out of the receiving channel, promptly dissipating the heat and preventing heat accumulation from damaging the stirring mechanism. This extends the service life of the stirring mechanism and ensures stable operation of the entire degassing device, thereby improving the degassing effect on dissolved gases in transformer oil.

[0016] Optionally, the heat dissipation holes are rectangular structures distributed at equal intervals.

[0017] By adopting this technical solution, the heat dissipation holes are arranged in an evenly spaced rectangular structure, allowing the heat within the bracket's receiving channel to be dissipated evenly and efficiently. This evenly spaced distribution ensures uniform heat dissipation, preventing localized heat accumulation that could affect the normal operation of the stirring mechanism components. Compared to other shapes, the rectangular structure provides a larger heat dissipation area, enhancing the heat dissipation effect and helping to maintain a stable temperature environment within the degasser, thereby ensuring the overall performance and reliability of the degasser and extending its service life.

[0018] Optionally, the outer surface of the bracket is provided with a corrosion-resistant layer.

[0019] By adopting the above technical solution, a corrosion-resistant layer is applied to the outer surface of the stent, effectively enhancing the stent's resistance to various corrosive factors. During use in the degasser, the stent may come into contact with corrosive substances or be exposed to corrosive environments. The corrosion-resistant layer protects the stent from corrosion, extending its service life and ensuring structural stability. This, in turn, ensures the proper operation of the degasser as a whole, reducing equipment failures and maintenance costs caused by stent corrosion.

[0020] Optionally, a fixing disk is provided at the lower end of the positioning protruding ring, and the positioning protruding ring and the fixing disk are detachably connected.

[0021] By adopting this technical solution, a detachable fixed plate is installed at the lower end of the positioning collar, facilitating installation and removal of the stirring mechanism and facilitating subsequent maintenance and repair. When cleaning or replacing parts of the stirring mechanism, the fixed plate can be easily removed from the positioning collar, making operation simple and convenient, reducing maintenance time and costs. This detachable connection also helps improve the overall stability and reliability of the equipment, ensuring the long-term stable operation of the degasser.

[0022] Optionally, a through hole is provided in the middle of the fixed disk for the output shaft of the stirring mechanism to pass through.

[0023] By adopting this technical solution, the through-hole in the center of the fixed disk allows the stirring mechanism's output shaft to pass smoothly through, ensuring that the stirring mechanism can effectively connect with the active stirring magnetic rotor, thereby driving the active stirring magnetic rotor's rotation. This rational structural design ensures stable operation of the stirring mechanism and improves the overall performance and degassing effect of the degasser.

[0024] Optionally, circular grooves for mounting permanent magnets are symmetrically arranged on the active stirring magnetic rotor; and a passive stirring magnetic rotor coupled to the active stirring magnetic rotor is provided in the degassing tank.

[0025] By adopting this technical solution, the symmetrical arrangement of circular grooves for mounting permanent magnets on the active stirring magnetic rotor ensures stable and symmetrical permanent magnet installation, allowing the active stirring magnetic rotor to generate a uniform magnetic field during rotation. A passive stirring magnetic rotor coupled to the active stirring magnetic rotor is installed in the degassing tank. This utilizes magnetic field coupling to achieve synchronous rotation of the passive stirring magnetic rotor, eliminating the need for an additional power connection. This simplifies the structure and ensures that the transformer oil is fully stirred within the degassing tank, improving degassing effectiveness and efficiency.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] In this application, the bracket is separated into two channels by a receiving channel and a positioning convex ring, which respectively accommodate the active stirring magnetic rotor and the stirring mechanism, thereby achieving orderly installation of components; the first fastening hole on the top is adapted to the degassing tank, and the second fastening hole on the bottom is fixed to the platform, ensuring stable operation of the device and providing a structural foundation for degassing;

[0028] This application provides a shock-absorbing gasket between the degassing tank and the bracket to reduce the vibration transmission between the degassing tank and the bracket during the operation of the degassing device, reduce the noise generated by the vibration, and at the same time reduce the wear of the degassing tank, the bracket and the internal components caused by the vibration, thereby improving the stability and service life of the device and ensuring a smooth degassing process.

[0029] This application facilitates the installation, disassembly and maintenance of the stirring mechanism through the detachable connection between the positioning convex ring and the fixed plate; the fixed plate cooperates with the positioning convex ring to further stabilize the stirring mechanism, ensure its operating stability, and improve the convenience of device maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the installation structure of the degassing tank and the bracket described in Example 1;

[0031] Figure 2 Schematic diagram of the installation structure of the bracket and the active stirring magnetic rotor described in Example 1;

[0032] Figure 3 is a schematic structural diagram of the bracket described in Example 1;

[0033] Figure 4 is a schematic structural diagram of the active stirring magnetic rotor described in Example 1;

[0034] Figure 5 1 is a schematic structural diagram of the stirring mechanism described in Example 1;

[0035] Figure 6 1 is a schematic structural diagram of the passive stirring magnetic rotor described in Example 1;

[0036] Figure 7 It is a structural diagram of the shock-absorbing gasket described in Example 2.

[0037] In the figure: 1. Degassing tank; 11. Passive stirring magnetic rotor; 2. Stirring mechanism; 21. Active stirring magnetic rotor; 211. Circular groove; 3. Bracket; 31. Accommodating channel; 311. Positioning protruding ring; 312. First accommodating channel; 313. Second accommodating channel; 314. Heat dissipation hole; 3141. Rectangular structure; 315. Fixing plate; 3151. Through hole; 32. First mounting plate; 321. First fastening hole; 322. Square structure; 33. Second mounting plate; 331. Second fastening hole; 34. Circular structure; 35. Corrosion-resistant layer; 4. Shock-absorbing gasket. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions of the various embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0039] Example 1, refer to Figures 1 to 3 The embodiment of the present application discloses a degassing device for dissolved gas in transformer oil, including a degassing tank 1, a stirring mechanism 2 and a bracket 3. A receiving channel 31 for accommodating the stirring mechanism 2 is axially arranged in the middle of the bracket 3, and a positioning protrusion 311 for installing the stirring mechanism 2 is provided on the inner wall of the receiving channel 31; the positioning protrusion 311 divides the receiving channel 31 into a first receiving channel 312 and a second receiving channel 313 from top to bottom. The first receiving channel 312 is used to accommodate an active stirring magnetic rotor 21 provided at the output end of the stirring mechanism 2, and the second receiving channel 313 is used to accommodate the stirring mechanism 2; a first fastening hole 321 adapted to the degassing tank 1 is provided at the top of the bracket 3, and a second fastening hole 331 for fixing to an external platform is provided at the bottom.

[0040] Specifically, refer to Figure 1The sidewalls of the receiving channel 31 are uniformly distributed with a plurality of heat dissipation holes 314. The heat dissipation holes 314 are arranged in a rectangular structure 3141 at equal intervals. The heat dissipation holes 314 are provided to dissipate heat from the stirring mechanism 2, preventing the stirring mechanism 2 from overheating due to long-term operation and affecting its performance. The heat dissipation holes 314 allow air to circulate within the receiving channel 31, dissipating heat generated by the stirring mechanism 2.

[0041] Reference Figure 2 The bracket 3 has a circular structure 34, and the first mounting plate 32 and the second mounting plate 33 have a square structure 322. The outer surface of the bracket 3 is provided with a corrosion-resistant layer 35. The corrosion-resistant layer 35 can be a coating, such as an epoxy coating, which can prevent the bracket 3 from being corroded by the external environment and extend the service life of the bracket 3.

[0042] Reference Figure 2~Figure 3 The bracket 3 has a first mounting plate 32 at its upper end and a second mounting plate 33 at its lower end. A first fastening hole 321 is provided on the first mounting plate 32, and a second fastening hole 331 is provided on the second mounting plate 33. The first mounting plate 32 has first fastening holes 321 for connecting and securing the degassing tank 1. Bolts can be inserted through the first fastening holes 321 to tightly connect the degassing tank 1 to the bracket 3. The second mounting plate 33 has second fastening holes 331 for securing the bracket 3 to an external platform. Bolts can also be inserted through the second fastening holes 331 to secure the bracket 3 and the degassing tank 1 to the external platform. The first and second mounting plates 32, 33, are welded to the main body of the bracket 3 to ensure stability.

[0043] Reference Figure 3~Figure 4 The middle part of the fixed disk 315 is provided with a through hole 3151 for the output shaft of the stirring mechanism 2 to pass through. The setting of the through hole 3151 allows the output shaft of the stirring mechanism 2 to pass through the through hole 3151 smoothly and connect with the active stirring magnetic rotor 21.

[0044] Reference Figure 5~Figure 6The active stirring magnetic rotor 21 is symmetrically arranged with circular grooves 211 for mounting permanent magnets. A passive stirring magnetic rotor 11 is coupled to the active stirring magnetic rotor 21 within the degassing tank 1. Permanent magnets are mounted within these circular grooves 211 to provide magnetic force for stirring. The active stirring magnetic rotor 21 can be a circular, disc-shaped structure made of a ferromagnetic material, such as an iron-nickel alloy, which better cooperates with the permanent magnets and enhances the magnetic effect. The passive stirring magnetic rotor 11 is disposed within the degassing tank 1 and coupled to the active stirring magnetic rotor 21. When the active stirring magnetic rotor 21 rotates, the magnetic force drives the passive stirring magnetic rotor 11 to rotate within the degassing tank 1, thereby stirring the oil in the transformer. The passive stirring magnetic rotor 11 can have a similar shape to the active stirring magnetic rotor 21 and can also be made of a ferromagnetic material. It interacts with the active stirring magnetic rotor 21 through the magnetic field, eliminating the need for direct contact and reducing mechanical wear.

[0045] The operating principle of this embodiment is as follows: the device achieves coordinated component positioning through the structure of the bracket 3, promoting degassing in transformer oil through magnetic stirring. The central receiving channel 31 of the bracket 3 is divided into two layers by a positioning collar 311: the upper first channel houses the active stirring magnetic rotor 21, while the lower second channel houses the stirring mechanism 2, ensuring axial alignment between the power source and the magnetic rotor. The first fastening hole 321 at the top of the bracket 3 secures the degassing tank 1 so that it aligns with the active magnetic rotor, while the second fastening hole 331 at the bottom secures the entire device. During operation, the stirring mechanism 2 drives the active magnetic rotor, which, through magnetic force, stirs the components within the degassing tank 1, disrupting the gas solution equilibrium in the oil and achieving gas separation.

[0046] Example 2, refer to Figure 7 , the difference between this embodiment and the first embodiment is that a shock-absorbing gasket 4 is provided between the degassing tank 1 and the bracket 3. A fixed disk 315 is provided at the lower end of the positioning convex ring 311, and the positioning convex ring 311 and the fixed disk 315 are a detachable connection structure. The material of the shock-absorbing gasket 4 can be rubber or silicone with elasticity. Its function is to reduce the vibration transmission between the degassing tank 1 and the bracket 3 and reduce noise. At the same time, it can also play a certain buffering role and protect the degassing tank 1 and the bracket 3; the detachable connection structure can be fixed with bolts or other fixing methods. When the stirring mechanism 2 needs to be cleaned or parts need to be replaced, the fixed disk 315 can be easily removed from the positioning convex ring 311, reducing maintenance time and cost.

[0047] The implementation principle of this embodiment is as follows: by providing a shock-absorbing gasket 4, the vibration transmission and noise between the degassing tank 1 and the bracket 3 can be reduced, and it also plays a buffering role to protect the degassing tank 1 and the bracket 3, further improving the use experience and reliability of the device; by providing the positioning protruding ring 311 and the fixing plate 315 as a detachable structure, the fixing plate 315 can be easily removed from the positioning protruding ring 311, which is convenient for cleaning or replacement of parts.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application.

Claims

1. A degassing device for dissolving gas in transformer oil, comprising a degassing tank (1), a stirring mechanism (2) and a bracket (3), characterized in that: An accommodating channel (31) for accommodating the stirring mechanism (2) is arranged axially in the middle of the bracket (3), and a positioning convex ring (311) for mounting the stirring mechanism (2) is provided on the inner wall of the accommodating channel (31); the positioning convex ring (311) divides the accommodating channel (31) into a first accommodating channel (312) and a second accommodating channel (313) from top to bottom, the first accommodating channel (312) being used to accommodate an active stirring magnetic rotor (21) provided at the output end of the stirring mechanism (2), and the second accommodating channel (313) being used to accommodate the stirring mechanism (2); a first fastening hole (321) adapted to the degassing tank (1) is provided at the top of the bracket (3), and a second fastening hole (331) for fixing to an external platform is provided at the bottom.

2. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: A shock-absorbing gasket (4) is provided between the degassing tank (1) and the bracket (3).

3. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: The bracket (3) is provided with a first mounting plate (32) at the upper end and a second mounting plate (33) at the lower end; the first fastening hole (321) is provided on the first mounting plate (32); and the second fastening hole (331) is provided on the second mounting plate (33).

4. The degassing device for dissolved gas in transformer oil according to claim 3, characterized in that: The bracket (3) is a circular structure (34), and the first mounting plate (32) and the second mounting plate (33) are square structures (322).

5. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: A plurality of heat dissipation holes (314) are evenly distributed on the side walls of the accommodating channel (31).

6. The degassing device for dissolved gas in transformer oil according to claim 5, characterized in that: The heat dissipation holes (314) are rectangular structures (3141) distributed at equal intervals.

7. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: The outer surface of the bracket (3) is provided with a corrosion-resistant layer (35).

8. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: A fixing disk (315) is provided at the lower end of the positioning convex ring (311), and the positioning convex ring (311) and the fixing disk (315) are detachably connected.

9. The degassing device for dissolved gas in transformer oil according to claim 8, characterized in that: A through hole (3151) is provided in the middle of the fixed disk (315) for the output shaft of the stirring mechanism (2) to pass through.

10. The degassing device for dissolved gas in transformer oil according to claim 1, characterized in that: Circular grooves (211) for mounting permanent magnets are symmetrically arranged on the active stirring magnetic rotor (21); and a passive stirring magnetic rotor (11) coupled to the active stirring magnetic rotor (21) is provided in the degassing tank (1).

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