Oil tank gas storage structure of vehicle-mounted transformer, mounting method and transformer

Abstract

The invention belongs to the technical field of transformers, and particularly relates to an oil tank gas storage structure of a vehicle-mounted transformer, a mounting method and the transformer. The oil tank gas storage structure comprises a surrounding sealing pipe, wherein the surrounding sealing pipe comprises a plurality of sealing hollow pipes attached to the side face of the transformer oil tank; the sealing hollow pipe comprises a plurality of first sealing pipes or a plurality of second sealing pipes or a plurality of first sealing pipes and a plurality of second sealing pipes; wherein the first sealing pipe is arranged on one group of opposite side surfaces of the transformer oil tank, and the second sealing pipe is arranged on the other group of opposite side surfaces of the transformer oil tank; the surrounding sealing pipe is connected with the top of the transformer oil tank through a top gas connecting pipe; the sealing hollow pipes in the surrounding sealing pipe are sequentially connected in series through air connecting pipes on the same layer. The height of the transformer oil tank is not changed while the compensation space required by thermal expansion and cold contraction of oil in the oil tank due to temperature is met, and the transformer oil tank can be more convenient to move and transport.

Description

Technical Field

[0001] This invention belongs to the field of transformer technology, specifically relating to an oil tank gas storage structure, installation method, and transformer for a vehicle-mounted transformer. Background Technology

[0002] Vehicle-mounted mobile transformers are increasingly favored by the market due to their advantages of light weight, small size, and ability to be transported as a whole without on-site reinstallation. Because of the need for overall emergency transport, in addition to reducing transport weight and ensuring the stability of the overall structure, the transformer's dimensions are crucial for transport safety and cost control.

[0003] For emergency vehicle-mounted mobile transformers, such as Figure 1 and Figure 2 As shown, in order to further reduce the external size, the conventional approach is to modify the oil conservator 7 into a flat octagonal structure and install it directly on the top of the oil tank. An oil pipe is connected to the oil tank to meet the compensation space required by the thermal expansion and contraction of the transformer oil. This structure can reduce the transportation height. However, for environments with very strict transportation height and external size requirements, this structure still cannot meet the transportation conditions.

[0004] Chinese patent publication number CN114496489A, entitled "A Patent Application for an Oil Storage Device for Transformers," describes a device where a bracket support plate is fixed to the upper end of the inner wall of the transformer tank, and the outer edge of a mesh support plate is fixed to the bracket support plate. A bladder is placed on the mesh support plate, and its upper end face is connected to the bottom surface of the transformer tank cover by a connector. The bladder is filled with air at one atmosphere. When the transformer oil volume is at its minimum, the bottom surface of the mesh support plate contacts the transformer oil, and the bladder contacts the mesh support plate. The upper part of the tank is filled with nitrogen. An oil level gauge connected to the tank is sealed and fixed on the side wall of the tank near the upper end face of the mesh support plate. An air inlet with a sealed air inlet pipe is opened at the center of the upper end wall of the bladder. The air inlet pipe passes through the center hole of the transformer tank cover and connects to a vent pipe, which in turn connects to a humidifier with an air inlet. This patent application still places the oil storage device at the top, which still affects the height limit of the transformer tank. Summary of the Invention

[0005] In order to overcome the problems existing in the prior art, the purpose of this invention is to provide a gas storage structure, installation method and transformer for a vehicle-mounted transformer oil tank. By setting a surrounding sealing pipe on the side of the transformer oil tank, the gas inside the transformer oil tank can be stored. This can meet the compensation space required for the oil inside the tank due to thermal expansion and contraction, without changing the height of the transformer oil tank, making the transformer oil tank easier to move and transport.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides an oil tank gas storage structure for a vehicle-mounted transformer, comprising: a surrounding sealing tube, the surrounding sealing tube including a plurality of in-layer connecting gas pipes and a plurality of sealing hollow tubes fitted to the side of the transformer oil tank; the sealing hollow tubes including a plurality of first sealing tubes or a plurality of second sealing tubes or a plurality of first sealing tubes and a plurality of second sealing tubes; wherein, the first sealing tubes are disposed on a set of opposite sides of the transformer oil tank, and the second sealing tubes are disposed on another set of opposite sides of the transformer oil tank; the surrounding sealing tube is connected to the top of the transformer oil tank through a top connecting gas pipe; the sealing hollow tubes in the surrounding sealing tube are connected in series sequentially through the in-layer connecting gas pipes.

[0007] Optionally, the sealed hollow tube includes two first sealing tubes and two second sealing tubes; the two first sealing tubes are respectively disposed on a set of opposite sides of the transformer oil tank; the two second sealing tubes are respectively disposed on another set of opposite sides of the transformer oil tank; the two ends of the two second sealing tubes are respectively connected to the ends of the two first sealing tubes through two in-layer connecting air pipes.

[0008] Optionally, there are multiple surrounding sealing tubes, which are arranged at different heights in the transformer tank. The top surrounding sealing tube is connected to the top of the transformer tank through a top air connecting pipe, and adjacent surrounding sealing tubes are connected by several interlayer air connecting pipes.

[0009] Optionally, the side of the first sealing tube and the two second sealing tubes that connects to the transformer oil tank matches the side shape of the transformer oil tank.

[0010] Optionally, the transformer tank is rectangular.

[0011] Optionally, both ends of the first sealing tube extend from the side of the transformer tank where it is located, and the side of the extended end of the first sealing tube is connected to the end of the second sealing tube through a gas connecting pipe in the same layer.

[0012] Optionally, the first sealing tube is provided with a plurality of first internal support tubes, the top and bottom of the first internal support tubes being connected to the top and bottom of the first sealing tube respectively, and the first internal support tubes having through holes extending through both sides.

[0013] Optionally, the interior of the second sealing tube is provided with a plurality of second internal support tubes, the top and bottom of the second internal support tubes being connected to the top and bottom of the second sealing tube respectively, and the second internal support tubes having through holes extending through both sides.

[0014] Secondly, the present invention provides an installation method for the oil tank gas storage structure of a vehicle-mounted transformer, comprising the following steps: The sealed hollow tube is welded to the side of the transformer tank; Install the top air connecting pipe on the sealed hollow tube and connect the top air connecting pipe to the inside of the sealed hollow tube; connect the other end of the top air connecting pipe to the top of the transformer oil tank and connect it to the inside of the transformer oil tank. Connect the sealed hollow tubes in the same surrounding sealing tube through the same layer connecting pipe, and make the sealed hollow tubes in the same surrounding sealing tube interconnected.

[0015] Thirdly, the present invention provides a vehicle-mounted mobile transformer, including a transformer oil tank, wherein the transformer oil tank is equipped with the oil tank gas storage structure of the vehicle-mounted transformer.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a gas storage structure for an oil tank of a vehicle-mounted transformer. By setting a surrounding sealing pipe on the side of the transformer oil tank, the gas inside the transformer oil tank can be stored. This can meet the compensation space required for the thermal expansion and contraction of the oil inside the tank due to temperature, without changing the height of the transformer oil tank.

[0017] A sealed hollow tube is connected and fitted to the side of the transformer tank. This prevents excessive nitrogen compression from causing excessive pressure inside the tank, which could lead to excessive deformation, damage, and leakage. Utilizing this space as a gas storage area naturally creates a gas chamber of controllable size while ensuring the tank's structural strength. This achieves the goals of reducing height and weight, ensuring safe transportation, and saving on transportation costs. It solves the problems that conventional mobile transformers with integrated oil conservators are limited by transportation dimensions and cannot be addressed by conventional layouts.

[0018] Furthermore, in a vehicle-mounted mobile transformer of the present invention, the height of the oil tank can be reduced to a minimum, and the volume can be flexibly adjusted according to the required compensation volume without increasing the transport height space while keeping the external dimensions unchanged. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a front view of an existing oil tank / storage unit. Figure 2 This is a side view of an existing oil tank / storage unit. Figure 3 This is a front view of the transformer tank according to an embodiment of the present invention; Figure 4This is a side view of the transformer tank according to an embodiment of the present invention; Figure 5 This is a top view of the transformer tank according to an embodiment of the present invention; Among them, 1. oil tank; 2. top air pipe; 3. first sealing pipe; 4. same-layer air pipe; 5. second sealing pipe; 6. inter-layer air pipe; 7. oil storage tank; 31. first internal support pipe; 51. second internal support pipe. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0021] Therefore, the following detailed description of embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and 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 of the present invention.

[0023] When an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. The use of the term "horizontal" does not imply that the component is required to be absolutely horizontal, but rather that it may be slightly tilted. "Horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] 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 does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] The present invention discloses an oil tank gas storage structure for a vehicle-mounted transformer, comprising: a surrounding sealing tube, the surrounding sealing tube including a plurality of in-layer connecting gas pipes 4 and a plurality of sealed hollow tubes fitted to the side of the transformer oil tank 1; the sealed hollow tubes including a plurality of first sealing pipes 3 or a plurality of second sealing pipes 5 or a plurality of first sealing pipes 3 and a plurality of second sealing pipes 5; wherein, the first sealing pipes 3 are disposed on a set of opposite sides of the transformer oil tank 1, and the second sealing pipes 5 are disposed on another set of opposite sides of the transformer oil tank 1; the surrounding sealing tube is connected to the top of the transformer oil tank 1 through a top connecting gas pipe 2; the sealed hollow tubes in the surrounding sealing tube are connected in series sequentially through in-layer connecting gas pipes 4.

[0028] This invention eliminates the oil conservator 7 and utilizes a surrounding sealed tube as a gas chamber to compensate for the thermal expansion and contraction of the oil inside the tank. The sealed hollow tube is connected to and fitted to the side of the transformer oil tank 1, which can prevent excessive nitrogen compression from causing excessive pressure inside the tank, leading to excessive deformation, damage, and leakage. While solving the problem of the tank's own strength, it naturally forms a gas chamber with a controllable size. Example 1 like Figures 3 to 5 As shown in the figure, the oil tank gas storage structure of a vehicle-mounted transformer in this embodiment includes: a surrounding sealing pipe, the surrounding sealing pipe including a plurality of gas connecting pipes 4 in the same layer and a plurality of sealing hollow pipes attached to the side of the transformer oil tank 1.

[0029] The sealed hollow tube includes a plurality of first sealing tubes 3 or a plurality of second sealing tubes 5 or a plurality of first sealing tubes 3 and a plurality of second sealing tubes 5.

[0030] The first sealing tube 3 is disposed on one set of opposite sides of the transformer oil tank 1, and the second sealing tube 5 is disposed on another set of opposite sides of the transformer oil tank 1; the surrounding sealing tube is connected to the top of the transformer oil tank 1 through the top air connecting pipe 2; the sealing hollow tubes in the surrounding sealing tube are connected in series through the same layer air connecting pipe 4.

[0031] Specifically, in this embodiment, the transformer oil tank 1 is a rectangular body.

[0032] Optionally, in this embodiment, the sealed hollow tube includes two first sealing tubes 3 and two second sealing tubes 5. The two first sealing tubes 3 are respectively disposed on a set of opposite sides of the transformer oil tank 1; the two second sealing tubes 5 are respectively disposed on another set of opposite sides of the transformer oil tank 1.

[0033] Specifically, the transformer tank 1 has a long side and a short side, wherein the first sealing pipe 3 is disposed on the long side and the second sealing pipe 5 is disposed on the short side.

[0034] Specifically, the long axis of the first sealing tube 3 and the long axis of the second sealing tube 5 are both perpendicular to the vertical side of the transformer oil tank 1.

[0035] Specifically, the first sealing tube 3 and the second sealing tube 5 in the same surrounding sealing tube are set at the same height.

[0036] The surrounding sealing tube is used as the nitrogen chamber of the transformer.

[0037] Optionally, both the first sealing tube 3 and the second sealing tube 5 are steel pipes.

[0038] Optionally, the first sealing tube 3 and the second sealing tube 5 are both welded to the transformer oil tank 1, which can improve the structural strength of the transformer oil tank 1.

[0039] The two ends of the two second sealing tubes 5 are respectively connected to the ends of the two first sealing tubes 3 through two in-layer connecting air tubes 4.

[0040] Optionally, in this embodiment, there are two surrounding sealing tubes, which are positioned at different heights in the transformer tank 1.

[0041] The top surrounding sealing pipe is connected to the top of the transformer oil tank 1 through the top air connecting pipe 2, and the two surrounding sealing pipes are connected by an interlayer air connecting pipe 6.

[0042] Specifically, in this embodiment, the two surrounding sealing tubes are arranged in parallel.

[0043] The side of the first sealing tube 3 and the two second sealing tubes 5 that are in contact with the transformer oil tank 1 matches the side shape of the transformer oil tank 1.

[0044] Specifically, the side of the transformer oil tank 1 is a convex arc surface, and the inner sides of the first sealing tube 3 and the second sealing tube 5 are both arc surfaces that match the side of the transformer oil tank 1.

[0045] Furthermore, the outer surfaces of the first sealing tube 3 and the second sealing tube 5 are both arc surfaces with the same curvature as their inner surfaces, and both the first sealing tube 3 and the second sealing tube 5 are hollow and curved rectangular bodies.

[0046] The first sealing tube 3 has two ends extending from the side of the transformer oil tank 1 where it is located, and the side of the extended end of the first sealing tube 3 is connected to the end of the second sealing tube 5 through the air connecting pipe 4 in the same layer.

[0047] Optionally, in this embodiment, the first sealing tube 3 is provided with a plurality of first internal support tubes 31, the top and bottom of the first internal support tubes 31 are respectively connected to the top and bottom of the first sealing tube 3, and the first internal support tubes 31 are provided with through holes that penetrate both sides therethrough.

[0048] Optionally, in this embodiment, the interior of the second sealing tube 5 is provided with a plurality of second internal support tubes 51, the top and bottom of the second internal support tubes 51 being connected to the top and bottom of the interior of the second sealing tube 5 respectively, and the second internal support tubes 51 having through holes extending through both sides thereon.

[0049] Specifically, the first internal support tube 31 is perpendicular to the top and bottom surfaces of the first sealing tube 3. The second internal support tube 51 is perpendicular to the top and bottom surfaces of the second sealing tube 5.

[0050] The first internal support tube 31 and the second internal support tube 51 can further enhance the structural strength of the transformer tank 1.

[0051] Optionally, both the first internal support tube 31 and the second internal support tube 51 are hollow tubes.

[0052] Furthermore, the first internal support tube 31 has through holes on a set of opposite sides facing the long axis of the first sealing tube 3. The second internal support tube 51 has through holes on a set of opposite sides facing the long axis of the second sealing tube 5.

[0053] Optionally, in this embodiment, there are multiple first internal support tubes 31, which are equidistantly arranged within the first sealing tube 3.

[0054] Optionally, in this embodiment, there are multiple second internal support tubes 51, which are equidistantly arranged within the second sealing tube 5.

[0055] Example 2 This embodiment provides an installation method for the oil tank gas storage structure of a vehicle-mounted transformer as described in Embodiment 1, including the following steps: In this embodiment, a first internal support tube 31 and a second internal support tube 51 are pre-installed inside the first sealing tube 3 and the second sealing tube 5.

[0056] The sealed hollow tube is welded to the side of transformer oil tank 1.

[0057] Specifically, the top surrounding sealing tube is welded to the side of the transformer tank 1, and the lower surrounding sealing tube is welded to the side of the transformer tank 1.

[0058] First, the two ends of the first sealing tube 3 are extended out of the long side of the transformer oil tank 1 and welded together. This ensures that the weld at the corner is firm and facilitates inspection of the weld. Then, the second sealing tube 5 is welded to the short side of the transformer oil tank 1.

[0059] A through hole is made in one of the first sealing tubes 3 on the top surrounding sealing tube. The top air connecting tube 2 is inserted into the through hole of the first sealing tube 3, and the joint is sealed and fixed. The other end of the top air connecting tube 2 is inserted from the top of the transformer oil tank 1, and the connection is sealed. This connects the top air connecting tube 2 to the inside of the first sealing tube 3, and also connects the other end of the top air connecting tube 2 to the inside of the transformer oil tank 1.

[0060] Two first sealing pipes 3 and two second sealing pipes 5 in the same surrounding sealing pipe are connected by a gas connecting pipe 4. Specifically, a hole is made on the side of the end of the first sealing pipe 3 that extends out of the transformer oil tank 1, and holes are made on the end faces of both ends of the second sealing pipe 5. The gas connecting pipe 4 is inserted into both ends of the second sealing pipe 5, and the other end of each gas connecting pipe 4 is inserted into the two first sealing pipes 3. The connection between the gas connecting pipe 4 and the opening is sealed.

[0061] Make an opening at the bottom of one of the second sealing tubes 5 of the top surrounding sealing tube, and make an opening at the top of one of the second sealing tubes 5 of the lower surrounding sealing tube. Insert both ends of the interlayer air connecting tube 6 into the bottom opening and top opening of the two surrounding sealing tubes respectively, and seal the connection between the interlayer air connecting tube 6 and the opening.

[0062] When in use, the transformer oil tank 1 is evacuated and filled with oil, while nitrogen is added at the same time to expel the air from the transformer oil tank 1.

[0063] Because the transformer oil tank 1 is sealed to the surrounding sealing tube, and gas can only be introduced into the surrounding sealing tube through the top of the transformer oil tank 1 without being discharged, nitrogen will not immediately enter the surrounding sealing tube when vacuuming, oil filling and nitrogen addition are performed.

[0064] The nitrogen and oil in the transformer oil tank 1 are filled until the space filled with nitrogen is greater than or equal to the volume change of the transformer oil due to temperature changes, ensuring that the oil does not overflow and only reaches the top of the transformer oil tank 1 at most. When the oil in the transformer oil tank 1 expands due to temperature, the nitrogen gas will enter the surrounding sealing tube to meet the volume change requirements, preventing the transformer oil tank 1 from deforming due to expansion. That is, when the oil in the transformer oil tank 1 expands to its maximum, the transformer oil can only expand to the top of the transformer oil tank 1 at most, while all the nitrogen gas enters the surrounding sealing tube.

[0065] Example 3 This embodiment of a vehicle-mounted mobile transformer includes a transformer oil tank 1, on which the oil tank 1 is equipped with the oil tank gas storage structure of the vehicle-mounted transformer described in Embodiment 1.

[0066] In this embodiment, the transformer oil tank 1 contains transformer oil and nitrogen.

[0067] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A gas storage structure for an oil tank of a vehicle-mounted transformer, characterized in that, include: The surrounding sealing tube includes several in-layer connecting air pipes (4) and several sealing hollow tubes that fit against the side of the transformer tank (1); the sealing hollow tube includes several first sealing tubes (3) or several second sealing tubes (5) or several first sealing tubes (3) and several second sealing tubes (5); wherein, the first sealing tubes (3) are arranged on a set of opposite sides of the transformer tank (1), and the second sealing tubes (5) are arranged on another set of opposite sides of the transformer tank (1); the surrounding sealing tube is connected to the top of the transformer tank (1) through the top connecting air pipe (2); the sealing hollow tubes in the surrounding sealing tube are connected in series through the in-layer connecting air pipes (4).

2. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The sealed hollow tube includes two first sealing tubes (3) and two second sealing tubes (5); the two first sealing tubes (3) are respectively arranged on a set of opposite sides of the transformer tank (1); the two second sealing tubes (5) are respectively arranged on another set of opposite sides of the transformer tank (1); the two ends of the two second sealing tubes (5) are respectively connected to the ends of the two first sealing tubes (3) through two in-layer connecting air pipes (4).

3. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The number of the surrounding sealing tubes is multiple, and the multiple surrounding sealing tubes are set at different height positions of the transformer oil tank (1). The top surrounding sealing tube is connected to the top of the transformer oil tank (1) through the top air connecting pipe (2), and adjacent two surrounding sealing tubes are connected by several interlayer air connecting pipes (6).

4. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The side of the first sealing tube (3) and the two second sealing tubes (5) that are in contact with the transformer oil tank (1) matches the side shape of the transformer oil tank (1).

5. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The transformer tank (1) is rectangular.

6. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The two ends of the first sealing tube (3) extend from the side of the transformer oil tank (1) where it is located, and the side of the extended end of the first sealing tube (3) is connected to the end of the second sealing tube (5) through the air connecting pipe (4) in the same layer.

7. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The first sealing tube (3) has several first internal support tubes (31) inside. The top and bottom of the first internal support tubes (31) are connected to the top and bottom of the first sealing tube (3) respectively. The first internal support tubes (31) have through holes that pass through both sides.

8. The oil tank gas storage structure of a vehicle-mounted transformer according to claim 1, characterized in that, The second sealing tube (5) has several second internal support tubes (51) inside. The top and bottom of the second internal support tubes (51) are connected to the top and bottom of the second sealing tube (5) respectively. The second internal support tubes (51) have through holes that pass through both sides.

9. The installation method of the oil tank gas storage structure of a vehicle-mounted transformer as described in any one of claims 1 to 8, characterized in that, Includes the following steps: The sealed hollow tube is welded to the side of the transformer tank (1); Install the top air pipe (2) on the sealed hollow tube and connect the top air pipe (2) to the inside of the sealed hollow tube; connect the other end of the top air pipe (2) to the top of the transformer oil tank (1) and connect it to the inside of the transformer oil tank (1); The sealed hollow tubes in the same surrounding sealing tube are connected by the same layer connecting pipe (4), and the sealed hollow tubes in the same surrounding sealing tube are connected.

10. A vehicle-mounted mobile transformer, characterized in that, It includes a transformer oil tank (1), on which the oil tank (1) is equipped with an oil tank gas storage structure of the vehicle-mounted transformer according to any one of claims 1 to 8.

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