Transformer oil filling valve assembly and transformer device

Abstract

The invention provides a transformer oil filling valve assembly and a transformer device, and the transformer oil filling valve assembly comprises a valve body; the connecting pipe is connected with the valve body; the plugging piece is arranged in the connecting pipe, and the plugging piece is provided with a closing position for closing the connecting pipe and an opening position for opening the connecting pipe; the exhaust pipe is connected with the valve body, and the exhaust pipe and the connecting pipe are arranged at intervals. According to the technical scheme, the problem that in the prior art, the transformer refueling efficiency is low is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a transformer refueling valve assembly and a transformer device. Background Art

[0002] In the power system, the transformer is a device that transforms voltage, current and impedance. Among them, the oil-immersed transformer will produce a certain amount of gas during operation. These gases need to be absorbed by the transformer oil. At the same time, in order to ensure the normal operation of the transformer, the transformer needs to be refilled with oil regularly.

[0003] In the related art, the method for refueling a distribution transformer is as follows: after the distribution transformer is powered off and safety measures are arranged, the pressure relief valve cover of the distribution transformer is removed manually by standing on the transformer platform. After the cover is removed, oil is added to the distribution transformer using an oil pipe or an oil barrel. After the refueling is completed, the pressure relief valve cover is replaced. After the refueling task is completed, power is restored. The whole process relies on manual operation, which is relatively cumbersome and leads to low refueling efficiency. Summary of the invention

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

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a transformer refueling valve assembly is provided, comprising: a valve body; a connecting pipe connected to the valve body; a plugging member arranged in the connecting pipe, the plugging member having a closing position for closing the connecting pipe and an opening position for opening the connecting pipe; an exhaust pipe, the exhaust pipe being connected to the valve body and spaced apart from the connecting pipe.

[0006] Furthermore, the transformer refueling valve assembly comprises an exhaust valve, which is hinged at the end of the exhaust pipe away from the valve body, and the exhaust valve is openably and closably arranged.

[0007] Furthermore, the transformer refueling valve assembly also includes a locking member, which is arranged between the exhaust pipe and the exhaust valve.

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

[0009] Furthermore, the transformer refueling valve assembly also includes a socket and a plug. The socket is arranged at the end of the connecting pipe away from the valve body, and the plug and the socket are arranged in a pluggable manner.

[0010] Furthermore, a first guide groove, a second guide groove and a recess are provided on the inner wall of the socket, the second guide groove is provided between the first guide groove and the recess, a push-out piece is provided in the recess, and a protrusion is provided on the outer wall of the plug. When the plug is inserted into the socket, the protrusion enters the recess through the first guide groove and the second guide groove and abuts and cooperates with the push-out piece.

[0011] Further, the ejection member includes an ejection block and an elastic member, the elastic member pushes the ejection block, and the protrusion can be inserted between the ejection block and the inner wall of the recess.

[0012] Furthermore, the transformer oil filling valve assembly also includes a pressure relief valve, which is arranged on the valve body.

[0013] Furthermore, the transformer refueling valve assembly also includes a connecting pipe, which is connected to the valve body and has an observation window.

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

[0015] By applying the technical solution of the present invention, the connecting pipe is connected to the valve body, and the plugging piece is arranged in the connecting pipe. The plugging piece has a closing position for closing the connecting pipe and an opening position for opening the connecting pipe. The exhaust pipe is connected to the valve body and is arranged at a distance from the connecting pipe. Through the above arrangement, the connecting pipe can be connected to the refueling pipe, and the exhaust pipe can be exhausted. Specifically, the oil in the refueling pipe enters the valve body and then enters the transformer through the connecting pipe, and the exhaust pipe can be exhausted at the same time, so that the air inside the transformer can be discharged in time during refueling, avoiding refueling difficulties or safety hazards caused by excessive pressure. At the same time, the plugging piece can block the connecting pipe or open the connecting pipe. When refueling is needed, the connecting pipe is opened. When refueling is completed, the connecting pipe is closed, so that the transformer oil can be avoided from overflowing. This can significantly improve the efficiency of the refueling process and reduce the risk of leakage during refueling. Therefore, the technical solution of the present application effectively solves the problem of low efficiency of transformer refueling in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of an embodiment of a transformer refueling valve assembly according to the present invention is shown;

[0018] Figure 2 Shows Figure 1A schematic diagram of the structure of a transformer refueling valve assembly with an exhaust valve in an open state;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of a socket and a plug of a transformer refueling valve assembly;

[0020] Figure 4 Shows Figure 3 A schematic diagram of the stereoscopic structure of the socket and the plug from another perspective;

[0021] Figure 5 Shows Figure 3 A schematic top view of a socket;

[0022] Figure 6 Shows Figure 5 A schematic cross-sectional view of the connector in the direction of AA;

[0023] Figure 7 Shows Figure 5 A schematic cross-sectional view of the connector in the direction of BB;

[0024] Figure 8 Shows Figure 5 A schematic cross-sectional view of the connector in the CC direction;

[0025] Fig. 9 A schematic structural diagram of an embodiment of a transformer device according to the present invention is shown.

[0026] The above drawings include the following reference numerals:

[0027] 1. Transformer body; 10. Valve body; 20. Connecting pipe; 30. Blocking piece; 40. Exhaust pipe; 50. Exhaust valve; 60. Locking piece;

[0028] 70. socket; 71. first guide groove; 72. second guide groove; 73. recess;

[0029] 80. plug; 81. bump;

[0030] 90. ejector member; 91. ejector block; 92. elastic member;

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

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[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 plugging member 30 and an exhaust pipe 40. The connecting pipe 20 is connected to the valve body 10. The plugging member 30 is arranged in the connecting pipe 20, and the plugging member 30 has a closing position for closing the connecting pipe 20 and an opening position for 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] By applying the technical solution of the present invention, the connecting pipe 20 is connected to the valve body 10, and the plugging member 30 is arranged in the connecting pipe 20. The plugging member 30 has a closing position for closing the connecting pipe 20 and an opening position for opening the connecting pipe 20. The exhaust pipe 40 is connected to the valve body 10 and is arranged at a distance from the connecting pipe 20. Through the above arrangement, the connecting pipe 20 can be communicated with the refueling pipe, and the exhaust pipe 40 can achieve exhaust. Specifically, the oil in the refueling pipe enters the valve body 10 and then enters the transformer through the connecting pipe 20, and the exhaust pipe 40 can exhaust, so that the air inside the transformer can be discharged in time during refueling, avoiding refueling difficulties or safety hazards caused by excessive pressure. At the same time, the plugging member 30 can block the connecting pipe 20 or open the connecting pipe 20. When refueling is needed, the connecting pipe 20 is opened. When refueling is completed, the connecting pipe 20 is closed, so that the transformer oil can be prevented from overflowing. In this way, the efficiency of the refueling process can be significantly improved and the risk of leakage during refueling can be reduced. Therefore, the technical solution of the present application effectively solves the problem of low efficiency of transformer refueling in the related art.

[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 at the end of the exhaust pipe 40 away from the valve body 10, and the exhaust valve 50 can be opened and closed. The exhaust valve 50 can not only effectively control the exhaust process, but also be closed after refueling is completed to prevent external air from entering the transformer, which is suitable for refueling transformers at high altitudes or extreme weather conditions. In high altitude areas, the air is thin and the air pressure is low, and extreme weather such as cold or high temperature will affect the stability and safety of the refueling process.

[0038] Specifically, the addition of the exhaust valve 50 can ensure the stability of the refueling environment, and can ensure smooth refueling of the transformer even in a harsh environment, thereby improving the adaptability and reliability of the transformer.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the transformer refueling valve assembly further includes a locking member 60, which is disposed between the exhaust pipe 40 and the exhaust valve 50. The addition of the locking member 60 allows the exhaust valve 50 to be firmly locked in both the open and closed states, thereby preventing the exhaust valve 50 from being accidentally opened or closed due to improper operation or external factors. This is particularly important for transformers that require frequent refueling or maintenance, as it not only improves the safety of operation, but also ensures that the internal environment of the transformer is stable after each maintenance or refueling, thereby avoiding internal faults caused by air ingress, extending the service life of the transformer, and reducing maintenance costs.

[0040] Specifically, the locking piece 60 is a locking hook, the exhaust valve 50 is hingedly connected to the bottom of the exhaust pipe 40, and the locking piece 60 is located at the top of the exhaust valve 50. The locking piece 60 can be guaranteed to be in position under the action of gravity, thereby making the locking effect of the locking piece 60 better.

[0041] like Figure 1 and Figure 2 As shown, in the present 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, and a sealing plug is provided on the exhaust valve 50, which can be inserted into the second pipe section, thereby effectively sealing the exhaust pipe 40, thereby preventing rainwater from entering the exhaust pipe 40.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the connection between the exhaust pipe 40 and the valve body 10 is higher than the connection between the connecting pipe 20 and the valve body 10. This design utilizes the principle of gravity, so that the oil can flow smoothly into the transformer during refueling. At the same time, the exhaust pipe 40 is at a high position, which can more effectively discharge the air inside the transformer. This is particularly important for refueling large transformers, because large transformers have complex internal structures and large spaces, and it is more difficult to remove air.

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

[0044] In an embodiment not shown in the figure, the exhaust pipe 40 is arranged to be tilted downward, so as to further prevent rainwater and the like from entering the exhaust pipe 40 .

[0045] like Figures 1 to 8 As shown, in this embodiment, the transformer refueling valve assembly further includes a socket 70 and a plug 80. The socket 70 is arranged at the end of the connecting pipe 20 away from the valve body 10, and the plug 80 is arranged to be pluggable with the socket 70. The coordinated use of the socket 70 and the plug 80 simplifies the steps of the refueling operation and improves the refueling efficiency. This design is particularly important in outdoor or small space environments. The operator can quickly complete the refueling operation without moving the transformer, avoiding the difficulty of operation caused by space limitations and improving the safety and convenience of the operation.

[0046] At the same time, by using the socket 70 and the plug 80 in coordination, the connection between the socket 70 and the plug 80 can be more stable without the need for an operator to hold them.

[0047] like Figures 3 to 8As shown, in this 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 provided between the first guide groove 71 and the recess 73, a push-out member 90 is provided in the recess 73, and a convex block 81 is provided on the outer wall of the plug 80. When the plug 80 is inserted into the socket 70, the convex block 81 enters the recess 73 from the first guide groove 71 and the second guide groove 72 and abuts against the push-out member 90. The provision of the first guide groove 71 and the second guide groove 72 ensures the guidance and stability of the plug 80 when it is inserted, and avoids the failure of refueling or damage to the equipment due to inaccurate insertion of the plug.

[0048] It should be noted that this design is particularly suitable for refueling transformers in complex environments, such as nighttime operation, insufficient lighting or obstructed operator vision, which improves the accuracy and safety of operation and reduces the risk of operational errors.

[0049] At the same time, under the action of the ejector, the connection between the socket 70 and the plug 80 can be made more stable. Specifically, when the plug 80 is inserted into the socket 70, the ejector 90 can push the protrusion 81, thereby moving the plug 80 toward the socket 70, thereby making there no gap between the socket 70 and the plug 80, thereby avoiding oil leakage.

[0050] like Figures 3 to 8 As shown, in this embodiment, the ejector 90 includes an ejector block 91 and an elastic member 92, the elastic member 92 pushes the ejector block 91, and the protrusion 81 can be inserted between the ejector block 91 and the inner wall of the recess 73. The provision of the ejector 90 further enhances the firmness of the plug-in connection and ensures a stable connection during the refueling process. In a vibrating or mobile environment, such as refueling of a transformer during transportation or installation, this design can effectively resist external vibration and impact, maintain a tight connection of the refueling interface, avoid oil leakage, improve the stability and reliability of the equipment, reduce maintenance costs, and extend the service life of the equipment.

[0051] The ejection block 91 and the elastic member 92 have simple structures and can effectively clamp the protrusion 81 .

[0052] like Figure 1 As shown, in this embodiment, the transformer refueling valve assembly further includes a pressure relief valve 100, which is disposed on the valve body 10. The addition of the pressure relief valve 100 not only improves the safety of the equipment, but also can automatically adjust the internal pressure during the refueling process to avoid equipment damage or safety accidents caused by excessive pressure.

[0053] Specifically, in a high temperature or high pressure environment, if the transformer needs emergency refueling during operation, the pressure relief valve 100 can release the excessive internal pressure in time to prevent equipment damage and ensure the safety of the refueling process. It is suitable for occasions with strict safety requirements in the power system, such as nuclear power plants, wind farms, substations, etc., and provides a guarantee for the stable operation of the power system.

[0054] like Figure 1 As shown, in this embodiment, the transformer refueling valve assembly further 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. The setting of the observation window 111 enables the operator to monitor the refueling status more intuitively, adjust the operation in time, and avoid safety problems caused by excessive internal pressure. In an unmanned or remote operation environment, such as remote monitoring and maintenance of the power system, the observation window 111 can provide real-time feedback on the refueling status, ensure the visualization and controllability of the operation, reduce safety hazards caused by information delays or misoperation, and improve the overall operation efficiency and safety of the power system.

[0055] The transformer refueling valve assembly of the present application is between the oil column of the distribution transformer and the pressure relief valve 100. As a part of the distribution transformer, when the distribution transformer is under-pressure and leaks oil and needs to be replenished with oil, refueling can be carried out simply and quickly through the transformer refueling valve assembly, eliminating the shortcomings of traditional refueling methods and achieving refueling efficiency and process requirements without relying on the skill level of the operators.

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

[0057] 1. There is no need to disassemble the valve cover of the pressure relief valve 100 of the distribution transformer, eliminating the disadvantages of difficult disassembly and poor installation affecting the sealing effect of the distribution transformer.

[0058] 2. The socket 70 and the plug 80 have sealing and quick-connect functions. They are usually in a sealed state and are opened only when the plug 80 is inserted into the socket 70, thereby 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, such as Fig. 9 As shown, the transformer device of this embodiment includes a transformer body 1 and a transformer refueling valve assembly arranged on the transformer body 1, and the transformer refueling valve assembly is the above-mentioned transformer refueling valve assembly.

[0060] In practical applications, the transformer refueling valve assembly of the present application can significantly improve the efficiency of the refueling process and reduce the risk of leakage during refueling. At the same time, the arrangement of the observation window 111 and the pressure relief valve 100 enables the operator to more intuitively monitor the refueling status and adjust the operation in time to avoid safety problems caused by excessive internal pressure. Overall, the safety and convenience of transformer maintenance are improved, and it has significant practical value and application benefits.

[0061] Especially in the power system, the transformer is a key equipment, and the safety and efficiency of its refueling operation directly affect the stable operation of the power system. The transformer refueling valve assembly of the present application can effectively improve the efficiency of power system maintenance, reduce equipment failures and safety accidents caused by improper refueling operations, and provide a strong guarantee for the safe operation of the power system.

[0062] In addition, the durability and ease of operation of the transformer refueling valve assembly also reduce the cost of transformer maintenance and extend the service life of the equipment, which has broad application prospects and market potential. In the maintenance of power systems, the application of this refueling valve assembly can not only improve work efficiency, but also reduce equipment downtime caused by improper maintenance, ensure the continuity and stability of power supply, and contribute to the efficient operation of the power system.

[0063] The transformer refueling valve assembly of the present application is cleverly designed. The plugging piece 30 controls the opening and closing of the connecting pipe 20 to achieve sealing and opening during the refueling process of the transformer. The setting of the exhaust pipe 40 effectively avoids excessive internal pressure during refueling and ensures the safety of the refueling process. The cooperation of the 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 when inserted. The setting of the ejector 90 further enhances the firmness of the plug-in. The addition of the pressure relief valve 100 and the observation window 111 not only improves the safety of the equipment, but also facilitates the operator to monitor the refueling situation in real time, which improves the efficiency and safety of the transformer refueling as a whole and provides convenience for the maintenance of the transformer.

[0064] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transformer refueling valve assembly, characterized in that: include: Valve body (10); A connecting pipe (20) connected to the valve body (10); a blocking member (30) disposed in the connecting pipe (20), the blocking member (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 is spaced apart from the connecting pipe (20).

2. The transformer refueling valve assembly according to claim 1, characterized in that: The transformer refueling valve assembly comprises an exhaust valve (50), wherein the exhaust valve (50) is hinged to the end of the exhaust pipe (40) away from the valve body (10), and the exhaust valve (50) is openably and closably arranged.

3. The transformer refueling valve assembly according to claim 2, characterized in that: The transformer oil filling valve assembly further comprises a locking member (60), wherein the locking member (60) is arranged between the exhaust pipe (40) and the exhaust valve (50).

4. The transformer refueling 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 refueling valve assembly according to claim 1, characterized in that: The transformer oil filling valve assembly further comprises a socket (70) and a plug (80); the socket (70) is arranged at an end of the connecting pipe (20) away from the valve body (10); and the plug (80) is arranged to be pluggable with the socket (70).

6. The transformer refueling valve assembly according to claim 5, characterized in that: 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 provided between the first guide groove (71) and the recess (73); a push-out member (90) is provided in the recess (73); and 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 into the recess (73) through the first guide groove (71) and the second guide groove (72) and abuts against the push-out member (90).

7. The transformer refueling valve assembly according to claim 6, characterized in that: The ejection member (90) comprises an ejection block (91) and an elastic member (92), wherein the elastic member (92) pushes the ejection block (91), and the protrusion (81) can be inserted between the ejection block (91) and the inner wall of the recess (73).

8. The transformer refueling valve assembly according to claim 1, characterized in that: The transformer oil filling valve assembly further comprises a pressure relief valve (100), wherein the pressure relief valve (100) is arranged on the valve body (10).

9. The transformer refueling valve assembly according to claim 1, characterized in that: The transformer oil filling valve assembly further comprises a connecting pipe (110), wherein the connecting pipe (110) is connected to the valve body (10), and an observation window (111) is provided on the connecting pipe (110).

10. A transformer device, comprising a transformer body (1) and a transformer oil filling valve assembly arranged 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 9.

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