Heightened sealing diaphragm oil conservator

Abstract

The utility model discloses a heightened sealing diaphragm oil conservator which comprises an oil conservator and a diaphragm oil conservator structure. The utility model relates to the technical field of diaphragm oil conservators, when the oil quantity of an oil conservator is small and even the oil of a transformer is emptied, the laminating film assembly can be completely laminated on the inner side wall surface of a lower end shell, the problem that a traditional diaphragm is stretched and damaged by negative pressure due to the negative pressure effect is avoided, the normal use of the diaphragm is ensured, the service life of the diaphragm is prolonged, and the service life of the diaphragm is prolonged. When the oil quantity of the oil conservator is normal, the laminating film assembly is in an upward protruding state, the backup film assembly covers the outer portion of the laminating film assembly under the supporting of the multiple supporting columns, and if the oil quantity in the space formed by the lower end shell and the diaphragm oil conservator structure is increased, the laminating film assembly and the lengthened section film are damaged. And the backup membrane assembly can shield the transformer oil to prevent the transformer oil from leaking.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm oil pillow technology, specifically a heightened sealed diaphragm oil pillow. Background Technology

[0002] When ambient temperature and transformer load change, the volume of oil in the transformer tank expands and contracts. Diaphragm-type oil conservators use a diaphragm to isolate the oil surface from the atmosphere, allowing the oil to expand and contract within the conservator. This compensates for the volume changes in transformer oil caused by temperature variations, playing a crucial protective role in maintaining the normal operation of the transformer. Currently, some diaphragms are merely sheet-like structures, only able to rise and fall with the oil level within a certain space. For example, CN213988527U discloses a double-sealed diaphragm oil tank capable of vacuuming and monitoring oil temperature. The tank body contains a diaphragm, dividing the tank body into an upper cavity and a lower cavity. The upper cavity is connected to a desiccant pipe. The diaphragm in this patent document is merely a sheet-like structure, and its shape cannot fit the inner wall of the lower cavity of the tank body. When the oil level drops to a very low point, due to the negative pressure, the diaphragm will be stretched, leading to accelerated aging of the diaphragm material, reduced toughness, and increased susceptibility to cracking. This results in decreased sealing performance and may even allow impurities such as air and moisture to enter the tank, affecting the insulation performance and stability of the transformer oil.

[0003] While existing technologies may already offer solutions to the aforementioned problems, this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a heightened sealed diaphragm oil pillow, comprising an oil tank and a diaphragm oil pillow structure. The oil tank includes a lower shell and an upper shell, both of which include a semi-capsule-shaped shell. An extended section shell is provided on the semi-capsule-shaped shell, and a flange connecting plate is provided on the outer wall of the extended section shell. The diaphragm oil pillow structure is located between the flange connecting plate on the lower shell and the flange connecting plate on the upper shell.

[0005] The diaphragm oil pillow structure includes a bonding membrane assembly and a backup membrane assembly;

[0006] The bonding membrane assembly includes a first sealing edge, which is bonded to a flange connecting plate on the lower end shell. One end of the first sealing edge extends into an extended section membrane, which is movably bonded to the inner wall of the extended section shell in the lower end shell. One end of the extended section membrane is filled with a semi-capsule-shaped bonding membrane, which is movably bonded to the inner wall of the semi-capsule-shaped shell in the lower end shell. Multiple support columns are provided on the semi-capsule-shaped bonding membrane, and the backup membrane assembly is disposed at one end of the multiple support columns.

[0007] Preferably, the backup membrane assembly includes a semi-capsule-shaped shielding membrane disposed at one end of the plurality of support columns. One end of the semi-capsule-shaped shielding membrane extends to an outer extension membrane, and one end of the outer extension membrane extends to a second sealing edge. The first sealing edge is attached to the first sealing edge and the flange connection plate on the upper shell.

[0008] Preferably, the length of the extended section of the upper shell is greater than the length of the extended section of the lower shell.

[0009] Preferably, the lower end shell is fitted with an oil inlet / outlet port.

[0010] Preferably, the upper shell is fitted with an air inlet and outlet.

[0011] Preferably, the first sealing edge, the extended section film, and the semi-capsule-shaped adhesive film are an integral structure.

[0012] Beneficial effects

[0013] This utility model provides an elevated sealing diaphragm oil conservator, which has the following advantages compared with the prior art: When the oil level in the oil tank is low, or even when the transformer oil is drained, the bonding membrane assembly can completely adhere to the inner wall of the lower shell, avoiding the problem of the diaphragm being stretched and damaged due to negative pressure, which is common in traditional diaphragms. This ensures the normal use of the diaphragm and extends its lifespan. When the oil level in the oil tank is normal, the bonding membrane assembly is in an upward convex state. Supported by multiple support columns, the backup membrane assembly covers the outside of the bonding membrane assembly. If the semi-capsule-shaped bonding membrane and the extended section membrane are damaged due to the increased oil level in the space formed by the lower shell and the diaphragm oil conservator structure, the backup membrane assembly can shield the transformer oil and prevent leakage. At the same time, the gap between the bonding membrane assembly and the backup membrane assembly can buffer the impact of the transformer oil spraying from the damaged area, preventing damage to the backup membrane assembly and extending its service life. Attached Figure Description

[0014] Figure 1 This is a partial three-dimensional structural schematic diagram of a heightened sealing diaphragm oil pillow according to the present invention.

[0015] Figure 2 This is a cross-sectional structural diagram of a heightened sealing diaphragm oil pillow of the present invention when the oil volume is low.

[0016] Figure 3 This is a cross-sectional structural diagram of a heightened sealing diaphragm oil pillow of the present invention when the oil level is normal.

[0017] In the diagram: 1. Semi-capsule shell, 2. Extended shell section, 3. Flange connecting plate, 4. First sealing edge, 5. Extended membrane section, 6. Semi-capsule-shaped bonding membrane, 7. Support column, 8. Semi-capsule-shaped shielding membrane, 9. Outer extension membrane, 10. Second sealing edge, 11. Oil inlet / outlet, 12. Air inlet / outlet. Detailed Implementation

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example: Please refer to Figure 1-3 To address the issue that the diaphragm cannot adhere to the inner wall of the lower cavity of the oil conservator, and that when the oil level drops to a very low point, the diaphragm will be stretched due to negative pressure, leading to accelerated aging of the diaphragm material, reduced toughness, and increased susceptibility to cracking, resulting in decreased sealing performance and even allowing impurities such as air and moisture to enter the oil conservator, affecting the insulation performance and stability of the transformer oil, this technical solution is designed. The detailed technical solution is as follows:

[0020] A heightened sealed diaphragm oil pillow includes an oil tank and a diaphragm oil pillow structure. The oil tank includes a lower shell and an upper shell. Both the lower shell and the upper shell include a semi-capsule-shaped shell 1. An extended section shell 2 is provided on the semi-capsule-shaped shell 1. A flange connecting plate 3 is provided on the outer wall of the extended section shell 2. The diaphragm oil pillow structure is located between the flange connecting plate 3 on the lower shell and the flange connecting plate 3 on the upper shell.

[0021] It should be noted that the lower end shell and the upper end shell are interlocked, and the diaphragm oil conservator structure is set between the two. The oil tank is formed by the sealing connection of the flange connecting plate 3. The lower part of the diaphragm oil conservator structure is in contact with the oil surface, and the upper part is in contact with the air.

[0022] Specifically, the diaphragm oil reservoir structure includes a bonding membrane assembly and a backup membrane assembly;

[0023] Specifically, the bonding membrane assembly includes a first sealing edge 4, which is bonded to the flange connecting plate 3 on the lower end shell. One end of the first sealing edge 4 extends to an extended section membrane 5, which is movably bonded to the inner wall of the extended section shell 2 in the lower end shell. One end of the extended section membrane 5 is filled with a semi-capsule-shaped bonding membrane 6, which is movably bonded to the inner wall of the semi-capsule-shaped shell 1 in the lower end shell. Multiple support columns 7 are provided on the semi-capsule-shaped bonding membrane 6, and a backup membrane assembly is provided at one end of the multiple support columns 7.

[0024] Specifically, the backup membrane assembly includes a semi-capsule-shaped shielding membrane 8, which is disposed at one end of a plurality of support columns 7. One end of the semi-capsule-shaped shielding membrane 8 extends to an outer extension membrane 9, and one end of the outer extension membrane 9 extends to a second sealing edge 10. The first sealing edge 4 is attached to the first sealing edge 4 and the flange connecting plate 3 on the upper shell.

[0025] It should be noted that the outer walls of the semi-capsule-shaped shielding membrane 8 and the outer extension membrane 9 are in contact with air. When the amount of oil in the space formed by the lower end shell and the diaphragm oil pillow structure is small, or even when the transformer oil is drained, the extended section membrane 5 and the semi-capsule-shaped bonding membrane 6 can completely bond to the inner wall of the lower end shell. This avoids the problem of the diaphragm being stretched and damaged due to negative pressure, which is common in traditional diaphragms. This ensures the normal use of the diaphragm and extends its lifespan.

[0026] When the oil volume in the space formed by the lower end shell and the diaphragm oil conservator structure is normal, the extended section membrane 5 and the semi-capsule-shaped adhesive membrane 6 are in an upward convex state, and the lower wall surface of the semi-capsule-shaped adhesive membrane 6 contacts the oil surface. Supported by multiple support columns 7, the semi-capsule-shaped shielding membrane 8 and the outer extension membrane 9 cover the outside of the extended section membrane 5 and the semi-capsule-shaped adhesive membrane 6. There is a certain distance between the semi-capsule-shaped shielding membrane 8 and the semi-capsule-shaped adhesive membrane 6, and between the outer extension membrane 9 and the extended section membrane 5, forming a buffer distance. If the semi-capsule-shaped adhesive membrane 6 and the extended section membrane 5 are damaged due to the increase in oil volume in the space formed by the lower end shell and the diaphragm oil conservator structure, the backup membrane assembly can shield the transformer oil to prevent transformer oil leakage. At the same time, the buffer distance can buffer the impact force of the transformer oil spraying from the damaged part, avoid damage to the backup membrane assembly, and extend its service life.

[0027] Among them, the first sealing edge 4, the extended section membrane 5, the semi-capsule-shaped bonding membrane 6, the support column 7, the semi-capsule-shaped shielding membrane 8, the outer extension membrane 9, and the second sealing edge 10 are all made of rubber.

[0028] Preferably, the length of the extended section 2 in the upper shell is greater than that in the lower shell, so that when the semi-capsule-shaped shielding film 8 bulges upward, there is still a distance between it and the inner wall of the lower shell.

[0029] As a preferred and further option, an oil inlet / outlet 11 is inserted into the lower end shell for the flow of transformer oil.

[0030] As a preferred and further option, an air inlet / outlet 12 is inserted into the upper housing for airflow.

[0031] As a preferred and further option, the first sealing edge 4, the extended section membrane 5, and the semi-capsule-shaped adhesive membrane 6 are integrated into one structure.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heightened sealed diaphragm oil reservoir, comprising an oil tank and a diaphragm oil reservoir structure, characterized in that, The oil storage tank includes a lower shell and an upper shell. Both the lower shell and the upper shell include a semi-capsule-shaped shell (1). An extended section shell (2) is provided on the semi-capsule-shaped shell (1). A flange connecting plate (3) is provided on the outer wall of the extended section shell (2). The diaphragm oil pillow structure is located between the flange connecting plate (3) on the lower shell and the flange connecting plate (3) on the upper shell. The diaphragm oil pillow structure includes a bonding membrane assembly and a backup membrane assembly; The bonding membrane assembly includes a first sealing edge (4), which is bonded to the flange connecting plate (3) on the lower end shell. An extended section membrane (5) extends from one end of the first sealing edge (4). The extended section membrane (5) is movably bonded to the inner wall of the extended section shell (2) in the lower end shell. A semi-capsule-shaped bonding membrane (6) is filled at one end of the extended section membrane (5). The semi-capsule-shaped bonding membrane (6) is movably bonded to the inner wall of the semi-capsule-shaped shell (1) in the lower end shell. A plurality of support columns (7) are provided on the semi-capsule-shaped bonding membrane (6). The backup membrane assembly is disposed at one end of the plurality of support columns (7).

2. The heightened sealed diaphragm oil pillow according to claim 1, characterized in that, The backup membrane assembly includes a semi-capsule-shaped shielding membrane (8), which is disposed at one end of a plurality of support columns (7). One end of the semi-capsule-shaped shielding membrane (8) extends to an outer extension membrane (9), and one end of the outer extension membrane (9) extends to a second sealing edge (10). The first sealing edge (4) is attached to the first sealing edge (4) and the flange connecting plate (3) on the upper shell.

3. The heightened sealed diaphragm oil pillow according to claim 1, characterized in that, The length of the extended section (2) in the upper shell is greater than the length of the extended section (2) in the lower shell.

4. The heightened sealed diaphragm oil pillow according to claim 1, characterized in that, The lower end shell is fitted with an oil inlet / outlet port (11).

5. The heightened sealed diaphragm oil pillow according to claim 1, characterized in that, An air inlet / outlet (12) is inserted into the upper shell.

6. The heightened sealed diaphragm oil pillow according to claim 1, characterized in that, The first sealing edge (4), the extended section membrane (5), and the semi-capsule-shaped adhesive membrane (6) are an integral structure.

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