Sealing device of transformer oil tank

Abstract

The utility model is suitable for the technical field of transformer oil tanks, and provides a sealing device of a transformer oil tank, which comprises an oil tank body, the connecting brim is arranged at the top of the oil tank body; the box cover is arranged above the connecting eave; the connecting mechanism is arranged between the connecting eave and the box cover; the connecting mechanism comprises a limiting groove formed in the top of the connecting eave, a plurality of reset springs arranged on the bottom side of the limiting groove and a sealing gasket. According to the oil tank, efficient sealing of the oil tank is achieved through the components which work cooperatively, oil leakage is effectively prevented, normal operation of a transformer and safety of the environment are guaranteed, and meanwhile the oil tank is prevented from being damaged. The open notch of the sealing block and the spiral connection mode of the connecting rod enable installation and detachment to be simple and efficient, the maintenance difficulty is reduced, the working efficiency is improved, the convenient and reliable sealing device improves the performance of the transformer, the use cost is also reduced, and the sealing device is an ideal choice in the power industry.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer oil tanks, and particularly relates to a sealing device for a transformer oil tank. Background Art

[0002] With the rapid development of the power industry, transformers, as key power equipment, their safety and reliability are crucial for the stable operation of the power system; during the operation of the transformer, the sealing performance of the oil tank is directly related to whether the oil will leak, thus affecting the normal operation of the transformer and the safety of the surrounding environment;

[0003] Firstly, poor sealing effect is a prominent problem of traditional oil tank sealing devices; due to limitations in design principles, material selection, or manufacturing processes, traditional sealing devices often cannot ensure complete sealing of the oil tank; during long-term use, the oil tank may experience leakage, which not only causes waste of oil but may also pollute the environment; in addition, oil leakage may affect the normal operation of the transformer and even lead to safety accidents;

[0004] Secondly, difficult installation and maintenance are also a defect of traditional oil tank sealing devices; these devices often have complex structures and cumbersome installation processes, requiring professional technical personnel to operate; at the same time, during daily maintenance, due to numerous components and scattered locations, maintenance personnel need to spend a lot of time and effort on inspection and repair; this not only increases the maintenance cost but may also affect the normal operation of power equipment; traditional sealing devices often cannot meet these requirements due to technical limitations. Content of the Utility Model

[0005] The utility model provides a sealing device for a transformer oil tank, aiming to solve the problems that traditional oil tank sealing devices often have poor sealing effect and difficult installation and maintenance.

[0006] The utility model is realized as follows: a sealing device for a transformer oil tank includes an oil tank body; a connecting eaves arranged at the top of the oil tank body; a tank cover arranged above the connecting eaves; a connecting mechanism arranged between the connecting eaves and the tank cover; the connecting mechanism includes: an annular limiting groove arranged at the top of the connecting eaves, the limiting groove being circumferentially distributed along the edge of the oil tank body; a plurality of reset springs arranged at the bottom side of the limiting groove; dampers arranged in the plurality of reset springs; a sealing gasket arranged at the top of the plurality of reset springs; a limiting protrusion is arranged on the side of the tank cover opposite to the sealing gasket, and the limiting protrusion is arranged in a ring shape.

[0007] Preferably, it further includes a plurality of seals, and the seal includes: a sealing block disposed on the connecting eaves and the outer side of the box cover, and the cross-section of the sealing block is rectangular with an open notch; a reserved hole penetrating through the upper position of the sealing block; an inner spiral groove formed in the reserved hole; a connecting rod disposed in the reserved hole; an outer spiral groove disposed on the outer side of the connecting rod, and the connecting rod is in threaded fit with the reserved hole.

[0008] Preferably, the seal further includes: an abutting block disposed on the bottom side of the connecting rod; a rubber pad disposed on the bottom side of the abutting block.

[0009] Preferably, it further includes a fastening nut, and the fastening nut is disposed at the upper position of the connecting rod and is in threaded fit with it.

[0010] Preferably, the winding ratio of the inner spiral groove is the same as that of the outer spiral groove.

[0011] Preferably, the rubber pad is provided with anti-slip lines.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] First: The connection mechanism of the present device realizes the efficient sealing of the fuel tank through the coordinated work of each component; during the closing process of the box cover and the fuel tank body, the close fit of the sealing gasket and the limiting protrusion, as well as the combined action of the return spring and the damper, ensure that the sealing gasket always maintains sufficient contact pressure, thereby effectively preventing oil leakage; in addition, the design of the sealing block and the connecting rod also greatly enhances the sealing performance and reduces the leakage risk caused by minor deformation or mechanical vibration; this efficient sealing performance ensures that the transformer will not affect its normal operation due to oil leakage during the working process, and at the same time avoids the environmental pollution and safety hazards that may be brought by oil leakage.

[0014] Second: By setting the seal, the open notch of the sealing block facilitates the installation and disassembly operations of the sealing block. At the same time, the spiral connection method between the connecting rod and the sealing block is also easy to operate, making the installation and disassembly process of the entire sealing device simple and efficient. This design not only reduces the difficulty of installation and maintenance, but also improves the work efficiency, making the seal more convenient and reliable during use, meeting the requirements of the modern power industry for high efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 3It is a schematic structural view of the seal of the present utility model;

[0018] Figure 4 It is a schematic structural view of the connecting mechanism of the present utility model;

[0019] In the figure: 1, oil tank body; 2, connecting eaves; 3, tank cover; 4, limiting groove; 5, return spring; 6, sealing washer; 7, limiting protrusion; 8, sealing block; 9, reserved hole; 10, inner spiral groove; 11, connecting rod; 12, outer spiral groove; 13, abutting block; 14, rubber pad; 15, fastening nut. Specific embodiments

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0021] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment when it appears in various places in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] An embodiment of the present utility model provides a sealing device for a transformer oil tank, as Figures 1-4 shown, including an oil tank body 1; a connecting eaves 2 provided at the top of the oil tank body 1; a tank cover 3 provided above the connecting eaves 2; a connecting mechanism provided between the connecting eaves 2 and the tank cover 3; the connecting mechanism includes: an annular limiting groove 4 provided at the top of the connecting eaves 2, the limiting groove 4 being circumferentially distributed along the edge of the oil tank body 1; a plurality of return springs 5 provided at the bottom side of the limiting groove 4; a damper provided in the plurality of return springs 5; a sealing washer 6 provided at the top of the plurality of return springs 5; a limiting protrusion 7 provided on the side of the tank cover 3 opposite to the sealing washer 6, the limiting protrusion 7 being annularly arranged.

[0023] It should be noted that, due to the problems of poor sealing effect and difficult installation and maintenance often existing in traditional fuel tank sealing devices, this solution realizes the efficient sealing of the fuel tank and greatly simplifies the installation and maintenance process. Specifically, this device utilizes the close fit of the sealing gasket 6 and the limiting protrusion 7, as well as the combined action of the return spring 5 and the damper, to ensure that the sealing gasket 6 always maintains sufficient contact pressure, thereby effectively preventing oil leakage. At the same time, the design of the sealing block 8 and the connecting rod 11 also fully considers the convenience of installation and the reliability of sealing, making the entire sealing device more stable and reliable during use.

[0024] Specifically, in this embodiment, this solution mainly includes a fuel tank body 1; a connecting eaves 2 provided at the top of the fuel tank body 1; a tank cover 3 provided above the connecting eaves 2; a connecting mechanism provided between the connecting eaves 2 and the tank cover 3; First of all, the core components of the sealing device include the fuel tank body 1, the connecting eaves 2, the tank cover 3 and the connecting mechanism; The connecting mechanism further includes an annular limiting groove 4, a return spring 5, a damper and a sealing gasket 6; These components work together to ensure the sealing performance of the fuel tank; When the tank cover 3 is placed on the connecting eaves 2, the limiting protrusion 7 contacts the sealing gasket 6; At this time, the sealing gasket 6 is pressed by the limiting protrusion 7 and compresses the return spring 5 downward; The design of the return spring 5 enables the sealing gasket 6 to provide a certain buffer when under pressure and maintain sufficient contact pressure to ensure the sealing effect;

[0025] Inside the return spring 5, the damper plays an important role; The damper can reduce the vibration and impact of the sealing gasket 6 when under pressure, thereby improving the stability and reliability of the seal; It helps to control the compression speed of the sealing gasket 6 and prevent poor sealing caused by too fast or too slow compression; The design of the annular limiting groove 4 ensures that the sealing gasket 6 and the return spring 5 can be stably installed on the connecting eaves 2 and are circumferentially distributed along the edge of the fuel tank body 1, thereby achieving uniform sealing of the entire connecting eaves 2;

[0026] When the tank cover 3 is completely closed, the sealing gasket 6 is in close contact with the limiting protrusion 7, forming an effective sealing interface; The elastic force of the return spring 5 ensures that the sealing gasket 6 always maintains sufficient pressure to resist the influence of external pressure changes or temperature fluctuations on the sealing effect;

[0027] Generally speaking, this sealing device for the transformer fuel tank realizes the efficient sealing of the fuel tank through the coordinated action of each component; It can effectively prevent oil leakage, improve the working efficiency and working life of the transformer, and at the same time avoid the environmental pollution and resource waste that may be caused by oil leakage.

[0028] In a further preferred embodiment of the present utility model, such as Figures 1-3As shown, it further includes a number of seals, and the seals include: a sealing block 8 provided on the connecting eaves 2 and the outer side of the tank cover 3, and the cross-section of the sealing block 8 is arranged as a rectangle with an open notch; a reserved hole 9 penetrating through the upper position of the sealing block 8; an inner spiral groove 10 is provided in the reserved hole 9; a connecting rod 11 provided in the reserved hole 9; an outer spiral groove 12 provided on the outer side of the connecting rod 11, and the connecting rod 11 is in threaded fit with the reserved hole 9.

[0029] In this embodiment, as the tank cover 3 gradually closes with the fuel tank body 1, the open notch of the sealing block 8 is cleverly arranged at the outer edges of the connecting eaves 2 and the tank cover 3; this design of the open notch not only greatly facilitates the installation and disassembly operations of the sealing block 8, but also can effectively absorb and adapt to the possible minor deformations between the connecting eaves 2 and the tank cover 3 to a certain extent, thus significantly improving the overall sealing performance;

[0030] During the assembly process, the connecting rod 11 is accurately inserted into the reserved hole 9; at this time, the outer spiral groove 12 on the connecting rod 11 is closely matched with the inner spiral groove 10 in the reserved hole 9 to form a firm threaded connection; this way of spiral connection not only ensures the close fit between the connecting rod 11 and the sealing block 8, but also can effectively prevent the leakage of oil or other substances from the connection.

[0031] When the sealing device starts to work, the connecting rod 11 will be further screwed into the reserved hole 9 until it reaches the predetermined tightening degree; during this process, the sealing block 8 will form a solid and effective sealing surface between the connecting eaves 2 and the tank cover 3, thereby tightly preventing the leakage of oil.

[0032] In a further preferred embodiment of the present invention, as Figure 3 shown, the seal further includes: an abutting block 13 provided on the bottom side of the connecting rod 11; a rubber pad 14 provided on the bottom side of the abutting block 13.

[0033] In this embodiment, when the connecting rod 11 is tightened, the abutting block 13 will closely fit on the corresponding position of the sealing block 8 or the fuel tank, further enhancing the sealing effect. On the bottom side of the abutting block 13, a rubber pad 14 is also provided. The rubber pad 14 has good elasticity and sealing performance, and can form an additional sealing layer between the abutting block 13 and the sealing block 8 or the fuel tank. In this way, even if minor displacements occur between the connecting eaves 2 and the tank cover 3 due to temperature changes or mechanical vibrations during the working process, the rubber pad 14 can effectively absorb these displacements and maintain the tightness of the seal.

[0034] In a further preferred embodiment of the present invention, as Figures 1-3 shown, it further includes a fastening nut 15, and the fastening nut 15 is provided at the upper position of the connecting rod 11 and is in threaded fit with it.

[0035] In this embodiment, as the fastening nut 15 is tightened, the connecting rod 11 will be subjected to a greater downward pressure, which makes the contact between the sealing block 8 and the connecting eaves 2 and the box cover 3 closer, reducing the possibility of leakage of oil or other substances.

[0036] In a further preferred embodiment of the present utility model, as Figure 3 shown, the winding ratio of the inner spiral groove 10 is the same as that of the outer spiral groove 12.

[0037] In this embodiment, the consistency of the winding ratio ensures that the inner spiral groove 10 and the outer spiral groove 12 can match and coordinate with each other in terms of structure and function. This design helps the inner spiral groove 10 and the outer spiral groove 12 to smoothly engage with each other during the process of screwing the connecting rod 11 into the reserved hole 9, forming a stable threaded connection.

[0038] In a further preferred embodiment of the present utility model, as Figure 4 shown, anti-slip patterns are provided on the rubber pad 14.

[0039] In this embodiment, the anti-slip patterns can increase the contact area and contact points between the contact surface with the limiting protrusion 7, thereby increasing the friction force. This increased friction force helps prevent the object from sliding on the rubber pad 14 and improves the stability.

[0040] Working principle: First, when the box cover 3 starts to gradually close with the fuel tank body 1, the limiting protrusion 7 contacts the sealing washer 6; the sealing washer 6 is subjected to pressure and starts to compress the return spring 5 downward; the design of the return spring 5 enables the sealing washer 6 to provide a certain buffer when subjected to pressure and maintain sufficient contact pressure to ensure the sealing effect;

[0041] Inside the return spring 5, the damper plays a key role; it can reduce the vibration and impact of the sealing washer 6 when subjected to pressure, thereby improving the stability and reliability of the seal; the damper helps control the compression speed of the sealing washer 6 to prevent poor sealing caused by too fast or too slow compression; at the same time, the limiting groove 4 ensures that the sealing washer 6 and the return spring 5 can be stably installed on the connecting eaves 2 and are circumferentially distributed along the edge of the fuel tank body 1, realizing uniform sealing of the entire connecting eaves 2;

[0042] When the box cover 3 is completely closed, the sealing washer 6 fits tightly with the limiting protrusion 7, forming an effective sealing interface; at this time, the elastic force of the return spring 5 ensures that the sealing washer 6 always maintains sufficient pressure to resist the influence of external pressure changes or temperature fluctuations on the sealing effect;

[0043] In addition, a sealing block 8 is provided at the outer edge connecting the eaves 2 and the box cover 3; this design not only facilitates the installation and disassembly of the sealing block 8, but also can effectively absorb and adapt to the possible minute deformations, thereby enhancing the sealing performance; after placing the sealing block 8, the connecting rod 11 is accurately inserted into the reserved hole 9; the outer spiral groove 12 on the connecting rod 11 closely cooperates with the inner spiral groove 10 in the reserved hole 9 to form a firm threaded connection; this spiral connection method ensures the close fit between the connecting rod 11 and the sealing block 8, effectively preventing oil leakage;

[0044] As the connecting rod 11 is further screwed in, the sealing block 8 forms a solid sealing surface between the connecting eaves 2 and the box cover 3; at the same time, the abutting block 13 closely fits on the corresponding position of the sealing block 8 or the fuel tank, further enhancing the sealing effect; the rubber pad 14 on the bottom side of the abutting block 13 provides an additional sealing layer, which can absorb minute displacements and maintain the tightness of the seal;

[0045] Importantly, the winding ratio of the inner spiral groove 10 and the outer spiral groove 12 is the same, which ensures that they can match and coordinate with each other in terms of structure and function; this design enables the inner spiral groove 10 and the outer spiral groove 12 to smoothly engage with each other when the connecting rod 11 is screwed into the reserved hole 9, forming a stable threaded connection;

[0046] Finally, by tightening the fastening nut 15, the connecting rod 11 is subjected to a greater downward pressure, making the contact between the sealing block 8 and the connecting eaves 2 and the box cover 3 closer, further reducing the possibility of leakage; through the collaborative action of each component, the entire sealing device achieves efficient sealing of the fuel tank, ensuring the working efficiency, working life of the transformer, and environmental safety.

[0047] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be in other sequences or carried out simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0048] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above division of units can be actually implemented in other division ways. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0049] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or may be distributed over multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without making creative efforts, combine, add or delete the features in the embodiments of the present invention according to the situation or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A sealing device for a transformer oil tank, characterized in that: include: Fuel tank body; A connecting eave disposed on the top of the oil tank body; A box cover arranged above the connecting eaves; A connecting mechanism provided between the connecting eaves and the box cover; The connecting mechanism comprises: An annular limiting groove is arranged on the top of the connecting eaves, and the limiting groove is distributed circumferentially along the edge of the oil tank body; A plurality of return springs arranged at the bottom side of the limiting groove; A damper disposed in the plurality of return springs; A sealing gasket disposed on the top of the plurality of return springs; A limiting protrusion is arranged on one side of the box cover opposite to the sealing gasket, and the limiting protrusion is arranged in a ring shape.

2. A sealing device for a transformer oil tank as claimed in claim 1, characterized in that: Also included are several seals, including: A sealing block is arranged on the outer side of the connecting eave and the box cover, wherein the cross section of the sealing block is a rectangular arrangement with an open notch; A reserved hole extending through the upper portion of the sealing block; An inner spiral groove is provided in the reserved hole; A connecting rod arranged in the reserved hole; An external spiral groove is arranged on the outside of the connecting rod, and the connecting rod is threadedly matched with the reserved hole.

3. A sealing device for a transformer oil tank as claimed in claim 2, characterized in that: The seal also includes: An abutment block disposed on the bottom side of the connecting rod; A rubber pad is arranged on the bottom side of the abutment block.

4. A sealing device for a transformer oil tank as claimed in claim 3, characterized in that: It also includes a fastening nut, which is arranged at the upper position of the connecting rod and is threadably matched with the connecting rod.

5. A sealing device for a transformer oil tank as claimed in claim 2, characterized in that: The winding ratio of the inner spiral groove is consistent with the winding ratio of the outer spiral groove.

6. A sealing device for a transformer oil tank as claimed in claim 3, characterized in that: The rubber pad is provided with anti-skid patterns.

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