Transformer oil filling valve assembly and transformer device

Abstract

The application provides a transformer oil filling valve assembly and a transformer device, wherein the transformer oil filling valve assembly comprises a valve body, a connecting pipe connected with the valve body, a blocking piece arranged in the connecting pipe, the blocking piece having a closed position for closing the connecting pipe and an open position for opening the connecting pipe, and an exhaust pipe connected with the valve body and arranged in a spaced manner with the connecting pipe. The technical scheme of the application effectively solves the problem of low efficiency of transformer oil filling in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a transformer oil filling valve assembly and a transformer device. BACKGROUND

[0002] In a power system, a transformer is a device for transforming voltage, current and impedance, wherein an oil-immersed transformer generates a certain amount of gas during operation, which needs to be absorbed by transformer oil, and at the same time, in order to ensure the normal operation of the transformer, the transformer needs to be supplemented with oil regularly.

[0003] In the related art, the oil filling method of a distribution transformer is as follows: after the distribution transformer is powered off and safety measures are arranged, a person stands on the transformer platform to disassemble the pressure relief valve cover of the distribution transformer, uses an oil guide pipe or an oil bucket to fill oil into the distribution transformer after the cover is disassembled, and then reassembles the pressure relief valve cover after the oil filling is completed, and restores power supply after the oil filling task is completed. The whole process relies on manual operation, which is relatively cumbersome, and thus the oil filling efficiency is low. SUMMARY

[0004] The main purpose of the present application is to provide a transformer oil filling valve assembly and a transformer device to solve the problem of low efficiency of transformer oil filling in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a transformer oil filling valve assembly is provided, comprising: a valve body; a connecting pipe connected with the valve body; a blocking piece arranged in the connecting pipe, the blocking piece having a closed position closing the connecting pipe and an open position opening the connecting pipe; and an exhaust pipe connected with the valve body and arranged in a spaced manner with the connecting pipe.

[0006] Further, the transformer oil filling valve assembly comprises an exhaust door hinged at an end of the exhaust pipe away from the valve body, and the exhaust door is arranged in an openable and closable manner.

[0007] Further, the transformer oil filling valve assembly further comprises a locking piece arranged between the exhaust pipe and the exhaust door.

[0008] Further, the connection between the exhaust pipe and the valve body is higher than the connection between the connecting pipe and the valve body.

[0009] Further, the transformer oil filling valve assembly further comprises a plug seat arranged at an end of the connecting pipe away from the valve body, and a plug arranged in a pluggable manner with the plug seat.

[0010] Further, the inner wall of the socket is provided with a first guide groove, a second guide groove and a recess, the second guide groove is arranged between the first guide groove and the recess, the recess is provided with a pushing piece, the outer side wall of the plug is provided with a protrusion, when the plug is inserted into the socket, the protrusion enters the recess from the first guide groove and the second guide groove and abuts with the pushing piece.

[0011] Further, the pushing piece comprises a pushing block and an elastic piece, the elastic piece pushes the pushing block, and the protrusion can be inserted between the pushing block and the inner wall of the recess.

[0012] Further, the transformer oil filling valve assembly further comprises a pressure relief valve arranged on the valve body.

[0013] Further, the transformer oil filling valve assembly further comprises a communication pipe in communication with the valve body, and the communication pipe is provided with an observation window.

[0014] According to another aspect of the present application, a transformer device is provided, comprising a transformer body and a transformer oil filling valve assembly arranged on the transformer body, wherein the transformer oil filling valve assembly is the above-mentioned transformer oil filling valve assembly.

[0015] According to the technical scheme of the present application, the connection pipe is connected with the valve body, the blocking piece is arranged in the connection pipe, and the blocking piece has a closing position for closing the connection pipe and an opening position for opening the connection pipe. The exhaust pipe is connected with the valve body and is arranged in a spaced manner with the connection pipe. Through the above arrangement, the connection pipe can be in communication with the oil filling pipe, and the exhaust pipe can realize exhaust. Specifically, the oil in the oil filling pipe enters into the valve body through the connection pipe and then enters into the transformer, while the exhaust pipe can realize exhaust, thereby the air inside the transformer can be discharged in time during oil filling, and the difficulty in oil filling or safety hazards caused by excessive pressure can be avoided. At the same time, the blocking piece can block or open the connection pipe, and when oil filling is needed, the connection pipe is opened, and when oil filling is finished, the connection pipe is closed, thereby the overflow of transformer oil can be avoided. In this way, the efficiency of the oil filling process can be significantly improved, and the risk of leakage during oil filling can be reduced. Therefore, the technical scheme of the present application effectively solves the problem of low efficiency of transformer oil filling in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and serve as an aid in explaining the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 Fig. 1 shows a structure schematic view of an embodiment of a transformer oil filling valve assembly according to the present application;

[0018] Figure 2 Fig. 2 shows a structure schematic view of another embodiment of a transformer oil filling valve assembly according to the present application; Figure 1Fig. 6 is a sectional view of the vent of the transformer oil filling valve assembly of Fig. 1 in an open configuration;

[0019] Figure 3 Fig. 7 is a perspective view of the plug and the socket of the transformer oil filling valve assembly of Fig. 1; Figure 1

[0020] Figure 4 Fig. 8 is another perspective view of the plug and the socket of Fig. 7; Figure 3

[0021] Figure 5 Fig. 9 is a top view of the socket of Fig. 7; Figure 3

[0022] Figure 6 Fig. 10 is a sectional view of the socket of Fig. 7 along the A-A direction; Figure 5

[0023] Figure 7 Fig. 11 is a sectional view of the socket of Fig. 7 along the B-B direction; Figure 5

[0024] Figure 8 Fig. 12 is a sectional view of the socket of Fig. 7 along the C-C direction; Figure 5

[0025] Figure 9 Fig. 13 is a schematic view of an embodiment of the transformer device according to the present application.

[0026] In the above drawings, the following reference numerals are used:

[0027] 1. Transformer body; 10. Valve body; 20. Connection pipe; 30. Blocking member; 40. Exhaust pipe; 50. Vent; 60. Locking member;

[0028] 70. Socket; 71. First guide slot; 72. Second guide slot; 73. Concave portion;

[0029] 80. Plug; 81. Protrusion;

[0030] 90. Pushing member; 91. Pushing block; 92. Elastic member;

[0031] 100. Pressure relief valve; 110. Communication pipe; 111. Observation window. DETAILED DESCRIPTION

[0032] ​​​​​​The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, the transformer refueling valve assembly includes: a valve body 10, a connecting pipe 20, a sealing element 30, and an exhaust pipe 40. The connecting pipe 20 is connected to the valve body 10. The sealing element 30 is disposed inside the connecting pipe 20, and the sealing element 30 has a closed position (closing the connecting pipe 20) and an open position (opening the connecting pipe 20). The exhaust pipe 40 is connected to the valve body 10 and is spaced apart from the connecting pipe 20.

[0036] Applying the technical solution of this invention, the connecting pipe 20 is connected to the valve body 10, and the sealing member 30 is disposed inside the connecting pipe 20. The sealing member 30 has a closed position for closing the connecting pipe 20 and an open position for opening the connecting pipe 20. The exhaust pipe 40 is connected to the valve body 10 and spaced apart from the connecting pipe 20. Through the above arrangement, the connecting pipe 20 can communicate with the oil filling pipe, and the exhaust pipe 40 can vent oil. Specifically, the oil in the oil filling pipe enters the valve body 10 through the connecting pipe 20 and then enters the transformer. At the same time, the exhaust pipe 40 can vent oil, thereby timely expelling air inside the transformer during oil filling and avoiding difficulties or safety hazards caused by excessive pressure during oil filling. Simultaneously, the sealing member 30 can seal or open the connecting pipe 20. When oil filling is needed, the connecting pipe 20 is opened; when oil filling is completed, the connecting pipe 20 is closed, thereby preventing transformer oil overflow. This significantly improves the efficiency of the oil filling process and reduces the risk of leakage during oil filling. Therefore, the technical solution of this application effectively solves the problem of low efficiency in transformer oil filling in related technologies.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the transformer refueling valve assembly includes an exhaust valve 50, which is hinged to the end of the exhaust pipe 40 away from the valve body 10. The exhaust valve 50 is closable. The exhaust valve 50 not only effectively controls the exhaust process but also closes after refueling to prevent external air from entering the transformer, making it suitable for refueling transformers at high altitudes or in extreme weather conditions. In high-altitude areas, the air is thin and the air pressure is low, while extreme weather conditions such as cold or high temperatures can affect the stability and safety of the refueling process.

[0038] Specifically, the addition of the exhaust valve 50 ensures a stable refueling environment, guaranteeing smooth refueling of the transformer even in harsh conditions, thus improving the transformer's adaptability and reliability.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the transformer oil filling valve assembly also includes a locking element 60, which is disposed between the exhaust pipe 40 and the exhaust valve 50. The addition of the locking element 60 ensures that the exhaust valve 50 is securely locked in both open and closed states, preventing accidental opening or closing of the exhaust valve 50 due to improper operation or external factors. This is particularly important for transformers that require frequent oil filling or maintenance, as it not only improves operational safety but also ensures a stable internal environment after each maintenance or oil filling, preventing internal faults caused by air ingress, extending the transformer's service life, and reducing maintenance costs.

[0040] Specifically, the locking element 60 is a locking hook. The exhaust valve 50 is hinged to the bottom of the exhaust pipe 40. The locking element 60 is located at the top of the exhaust valve 50. The locking element 60 is positioned by gravity, which helps to improve the locking effect of the locking element 60.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the exhaust pipe 40 includes a first pipe section and a second pipe section. The diameter of the first pipe section is larger than the diameter of the second pipe section. The second pipe section is located between the exhaust valve 50 and the first pipe section. A sealing plug is provided on the exhaust valve 50. The sealing plug can be inserted into the second pipe section, thereby effectively sealing the exhaust pipe 40 and preventing rainwater from entering the exhaust pipe 40.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the connection point between the exhaust pipe 40 and the valve body 10 is higher than the connection point between the connecting pipe 20 and the valve body 10. This design utilizes the principle of gravity, allowing the oil to flow smoothly into the transformer during refueling. Simultaneously, the elevated position of the exhaust pipe 40 enables more effective removal of air from the transformer's interior. This is particularly important for refueling large transformers, as their complex internal structure and large space make air removal more difficult.

[0043] The above design ensures the efficiency and safety of the refueling process, avoiding refueling difficulties or equipment damage caused by trapped internal air.

[0044] In an embodiment not shown in the figure, the exhaust pipe 40 is angled downwards. This further prevents rainwater and other substances from entering the interior of the exhaust pipe 40.

[0045] like Figures 1 to 8 As shown, in this embodiment, the transformer oil filling valve assembly further includes a plug-in seat 70 and a plug 80. The plug-in seat 70 is located at the end of the connecting pipe 20 away from the valve body 10, and the plug 80 is detachably connected to the plug-in seat 70. The cooperative use of the plug-in seat 70 and the plug 80 simplifies the oil filling operation and improves oil filling efficiency. This design is particularly important in outdoor or confined spaces, allowing operators to quickly complete the oil filling operation without moving the transformer, avoiding operational difficulties caused by space limitations, and improving operational safety and convenience.

[0046] At the same time, the use of the socket 70 and the plug 80 together makes the connection between the socket 70 and the plug 80 more stable and eliminates the need for the operator to hold them.

[0047] like Figures 3 to 8As shown, in the embodiment, the inner wall of the socket 70 is provided with a first guide groove 71, a second guide groove 72 and a recess 73, the second guide groove 72 is arranged between the first guide groove 71 and the recess 73, the recess 73 is provided with a push piece 90, the outer side wall of the plug 80 is provided with a protrusion 81, when the plug 80 is inserted into the socket 70, the protrusion 81 is guided by the first guide groove 71 and the second guide groove 72 into the recess 73 and abuts with the push piece 90. The arrangement of the first guide groove 71 and the second guide groove 72 ensures the guidance and stability of the plug 80 when inserted, avoiding oiling failure or equipment damage due to inaccurate insertion.

[0048] It should be noted that this design is particularly suitable for transformer oiling in complex environments, such as night operation, insufficient lighting or obstructed view of the operator, improving the accuracy and safety of the operation and reducing the risk of operation errors.

[0049] At the same time, under the action of the push piece, the connection between the socket 70 and the plug 80 is more stable, specifically, when the plug 80 is inserted into the socket 70, the push piece 90 can push the protrusion 81, thereby moving the plug 80 towards the socket 70, thereby ensuring a gapless connection between the socket 70 and the plug 80, thereby avoiding oil leakage.

[0050] As shown in the figure, Figures 3 to 8 In the embodiment, the push piece 90 includes a push block 91 and a resilient member 92, the resilient member 92 pushes the push block 91, and the protrusion 81 can be inserted between the push block 91 and the inner wall of the recess 73. The arrangement of the push piece 90 further enhances the firmness of the plug, ensuring stable connection during oiling. In a vibrating or moving environment, such as transformer oiling during transportation or installation, this design can effectively resist external vibration and impact, maintain the tight connection of the oiling interface, avoid oil leakage, improve the stability and reliability of the equipment, reduce maintenance costs and prolong the service life of the equipment.

[0051] The push block 91 and the resilient member 92 described above have a simple structure and can effectively clamp the protrusion 81.

[0052] As shown in the figure, Figure 1 In the embodiment, the transformer oiling valve assembly further includes a pressure relief valve 100 arranged on the valve body 10. The addition of the pressure relief valve 100 not only improves the safety of the equipment, but also automatically adjusts the internal pressure during oiling, avoiding equipment damage or safety accidents caused by excessive pressure.

[0053] Specifically, in a high-temperature or high-pressure environment, such as an emergency oiling of a transformer during operation, the pressure relief valve 100 can timely release the excessively high internal pressure, prevent equipment damage, ensure the safety of the oiling process, and is suitable for occasions with strict safety requirements in the power system, such as nuclear power plants, wind farms, transformer substations, etc., providing a guarantee for the stable operation of the power system.

[0054] As shown in Figure 1 In the present embodiment, the transformer oiling valve assembly further comprises a communication pipe 110 in communication with the valve body 10, and the communication pipe 110 is provided with an observation window 111. The observation window 111 allows the operator to more intuitively monitor the oiling state and timely adjust the operation to avoid safety problems caused by excessively high internal pressure. In an unattended or remote operation environment, such as remote monitoring and maintenance of the power system, the observation window 111 can provide real-time oiling state feedback, ensuring the visualization and controllability of the operation, reducing safety hazards caused by information delay or misoperation, and improving the overall operation efficiency and safety of the power system.

[0055] The transformer oiling valve assembly of the present application is between the oil column of the distribution transformer and the pressure relief valve 100, and is part of the distribution transformer. When the distribution transformer needs to be refilled due to oil leakage, the transformer oiling valve assembly can be used to simply and quickly add oil, eliminating the shortcomings of traditional oiling methods, and achieving oiling efficiency and process requirements regardless of the skill level of the operator.

[0056] The transformer oiling valve assembly of the present application has the following advantages:

[0057] 1. The valve cover of the pressure relief valve 100 of the distribution transformer does not need to be disassembled, eliminating the disadvantages of disassembly difficulty and installation affecting the sealing effect of the distribution transformer.

[0058] 2. The use of the plug-in seat 70 and the plug 80 has sealing and quick connection functions, and is normally in a sealed state. Only when the plug 80 is inserted into the plug-in seat 70 is it opened, effectively preventing rust or foreign matter from entering the interior of the transformer.

[0059] According to another aspect of the present application, a transformer device is provided, as shown in Figure 9 The transformer device of the present embodiment comprises a transformer body 1 and a transformer oiling valve assembly provided on the transformer body 1, and the transformer oiling valve assembly is the above-mentioned transformer oiling valve assembly.

[0060] In practical applications, the transformer oil filling valve assembly of this application can significantly improve the efficiency of the oil filling process and reduce the risk of leakage during oil filling. Furthermore, the inclusion of the observation window 111 and the pressure relief valve 100 allows operators to more intuitively monitor the oil filling status and adjust operations promptly, preventing safety issues caused by excessive internal pressure. Overall, it improves the safety and convenience of transformer maintenance, demonstrating significant practical value and application benefits.

[0061] Especially in power systems, transformers are critical equipment, and the safety and efficiency of their lubrication operations directly affect the stable operation of the power system. The transformer lubrication valve assembly of this application can effectively improve the efficiency of power system maintenance, reduce equipment failures and safety accidents caused by improper lubrication operations, and provide strong protection for the safe operation of the power system.

[0062] Furthermore, the durability and ease of operation of the transformer refueling valve assembly reduce transformer maintenance costs and extend equipment lifespan, demonstrating broad application prospects and market potential. In power system maintenance, the application of this refueling valve assembly not only improves work efficiency but also reduces equipment downtime caused by improper maintenance, ensuring the continuity and stability of power supply and contributing to the efficient operation of the power system.

[0063] The transformer refueling valve assembly of this application is ingeniously designed. The opening and closing of the connecting pipe 20 is controlled by the sealing component 30, achieving both sealing and opening during the transformer refueling process. The vent pipe 40 effectively prevents excessive internal pressure during refueling, ensuring safety. The cooperation between the plug socket 70 and the plug 80 makes the refueling operation more convenient. The design of the first guide groove 71, the second guide groove 72, and the recess 73 ensures the guidance and stability of the plug 80 during insertion, while the pusher 90 further enhances the firmness of the connection. The addition of the pressure relief valve 100 and the observation window 111 not only improves equipment safety but also facilitates real-time monitoring of the refueling status by operators, comprehensively improving the efficiency and safety of transformer refueling and providing convenience for transformer maintenance.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device as illustrated in the figures. However, it is to be understood that no absolute or relative orientation of the device is intended or implied, unless specifically described as such. Terms concerning attachments, coupling and the like, such as "connected" and "coupled" and the like, are to be construed in accordance with their normal meanings, that is, as referring to an indirect or direct connection or coupling. Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to". Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to".

[0066] In addition, it should be pointed out that the use of the terms "first", "second" and the like, to describe various elements in the claims, is merely intended to distinguish between two steps or entities of the application, and is not intended to limit the scope of the present application, unless specifically stated otherwise. Thus, the terms "first", "second", and the like, are not intended to limit the scope of the present application, unless specifically stated otherwise.

[0067] The preferred embodiments herein disclosed are not intended to limit the scope of the application, but rather the application is to cover all modifications and alternatives within the scope and spirit of the application. Therefore, the above description should not be construed as limiting, but merely as illustrative of the present application.

Claims

1. A transformer refueling valve assembly, characterized in that, include: Valve body (10); A connecting pipe (20) is connected to the valve body (10); A sealing element (30) is disposed inside the connecting pipe (20), the sealing element (30) having a closed position for closing the connecting pipe (20) and an open position for opening the connecting pipe (20); An exhaust pipe (40) is connected to the valve body (10) and spaced apart from the connecting pipe (20); The transformer refueling valve assembly also includes a socket (70) and a plug (80). The socket (70) is located at the end of the connecting pipe (20) away from the valve body (10), and the plug (80) is detachably connected to the socket (70). The inner wall of the socket (70) is provided with a first guide groove (71), a second guide groove (72) and a recess (73). The second guide groove (72) is located between the first guide groove (71) and the recess (73). A pusher (90) is provided in the recess (73). A protrusion (81) is provided on the outer wall of the plug (80). When the plug (80) is inserted into the socket (70), the protrusion (81) enters the recess (73) through the first guide groove (71) and the second guide groove (72) and abuts against the pusher (90). The pusher (90) includes a pusher block (91) and an elastic member (92), the elastic member (92) pushes the pusher block (91), and the protrusion (81) can be inserted between the pusher block (91) and the inner wall of the recess (73).

2. The transformer oil filling valve assembly according to claim 1, characterized in that, The transformer refueling valve assembly includes an exhaust valve (50) hinged to the end of the exhaust pipe (40) away from the valve body (10), and the exhaust valve (50) is configured to be openable and closable.

3. The transformer oil filling valve assembly according to claim 2, characterized in that, The transformer refueling valve assembly also includes a locking element (60), which is disposed between the exhaust pipe (40) and the exhaust valve (50).

4. The transformer oil filling valve assembly according to claim 1, characterized in that, The connection point between the exhaust pipe (40) and the valve body (10) is higher than the connection point between the connecting pipe (20) and the valve body (10).

5. The transformer oil filling valve assembly according to claim 1, characterized in that, The transformer refueling valve assembly also includes a pressure relief valve (100), which is disposed on the valve body (10).

6. The transformer oil filling valve assembly according to claim 1, characterized in that, The transformer refueling valve assembly also includes a connecting pipe (110), which is connected to the valve body (10), and an observation window (111) is provided on the connecting pipe (110).

7. A transformer assembly, comprising a transformer body (1) and a transformer oil filling valve assembly disposed on the transformer body (1), characterized in that, The transformer refueling valve assembly is the transformer refueling valve assembly according to any one of claims 1 to 6.

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