A one-piece molded oil storage tank capsule structure

Abstract

This utility model provides a one-piece molded oil tank capsule structure, belonging to the technical field of oil tank capsules. It includes a capsule with symmetrically integrated shoulder supports on the top of its outer wall. Each shoulder support is connected to the capsule via a channel. An integrated air inlet is fixed to the top of the capsule. An extension tube is sleeved on the top of the outer wall of the air inlet. An outer cap fixed to the oil tank is sleeved on the top of the extension tube. A sieve cylinder is embedded in the inner cavity of the extension tube. During changes in air pressure within the oil tank, the extension tube's expansion and contraction ensure the stability of the capsule inside the oil tank, preventing it from tilting left or right. This ensures the capsule's fit with the oil surface, eliminating air between the capsule and the oil surface and preventing contact between the oil and air. This prevents oil oxidation and also prevents external moisture and impurities from entering the transformer, maintaining a certain degree of dryness.

Description

Technical Field

[0001] This utility model relates to the field of oil storage tank capsule technology, specifically a one-piece molded oil storage tank capsule structure. Background Technology

[0002] A capsule-type oil conservator consists of a capsule bag added to the inner wall of the oil conservator. The capsule bag, connected to the atmosphere via a dehumidifier and pipes, floats flush against the oil surface, eliminating air between the capsule bag and the oil surface and preventing contact between the oil and air. This prevents oil oxidation and also prevents external moisture and impurities from entering the transformer, maintaining a certain level of dryness.

[0003] The related technology (announcement number: CN213935875U) discloses a one-piece molded transformer oil conservator capsule structure. The disclosed technical solution is as follows: the second filter screen plate and filter screen column are squeezed and housed inside the air inlet pipe, which drives the annular tube to move upward. At the same time as the annular tube moves upward, the spring is compressed. If the capsule body rises to the position of the second filter screen plate, although the second filter screen plate is blocked, the annular filter screen plate is not blocked by the capsule body. The annular filter screen plate can still ensure unobstructed exhaust through the filter screen column. Moreover, the annular filter screen plate has a large contact surface, so the exhaust flow is large and the exhaust effect is good. When the second filter screen plate and filter screen column are not under pressure, the spring rebound pull drives the filter screen column to reset as a whole, which is convenient for the next use.

[0004] The above-disclosed technical solutions reveal the following problems: When the oil tank capsule is inside the oil tank, the capsule will move when the oil volume inside the oil tank changes. At this time, it is necessary to ensure that the position of the capsule's air inlet does not change to avoid the entire capsule entering the oil tank, requiring maintenance and affecting the normal use of the transformer. To address this, we propose a novel one-piece molded oil tank capsule structure.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the stability issue of the capsule within the oil storage tank in the prior art, this utility model provides a one-piece molded oil storage tank capsule structure. This structure combines a stable, integrally molded structure with a connection structure that adapts to positional changes, achieving stable use of the oil storage tank capsule. The specific technical solution is as follows:

[0007] A one-piece molded oil tank capsule structure includes a capsule. The top of the outer wall of the capsule is symmetrically provided with integrally molded shoulder supports, and each shoulder support is connected to the capsule through a channel. An integrally molded air inlet is fixed to the top of the capsule. An extension tube is sleeved on the top of the outer wall of the air inlet. An outer cap fixed to the oil tank is sleeved on the top of the outer wall of the extension tube, and the outer cap is fixed to the outside of the extension tube by an elastic snap-fit ​​member. A screen cylinder is embedded in the inner cavity of the extension tube.

[0008] In the above technical solution, the outer cap is provided with a rotary drive component that drives the screen cylinder to slide circumferentially against the inner wall of the extension tube.

[0009] The rotary drive component includes a rotary shaft rotatably disposed on the top of the outer cap, the rotary shaft extending into the inner cavity of the outer cap, and a connecting component disposed between the end of the rotary shaft located in the inner cavity of the outer cap and the top of the sieve cylinder.

[0010] The plug-in component includes a socket fixed to the bottom end of the rotating shaft, a slot is provided at the bottom of the socket, a docking seat is fixed to the top of the screen cylinder, and plugs that engage with the slot are uniformly fixed to the top of the outer wall of the docking seat.

[0011] The rotary drive component includes a driven gear sleeved on the outer wall of the rotary shaft, and the oil tank is provided with a driving gear that meshes with the driven gear.

[0012] The elastic snap-fit ​​component includes an annular seat sleeved on the outer wall of the extension tube, and a slot is formed between the two annular seats. A support column is rotatably connected to the outer wall of the outer cap in a uniform circumferential direction, and the support column is inclinedly disposed on the outer wall of the outer cap through an elastic element. A movable cap is sleeved on the outer wall of the rotating shaft. A snap-fit ​​block that engages with the slot is fixed to the bottom end of the support column. A linkage frame is hinged between the top end of the support column and the movable cap.

[0013] Both the capsule and the shoulder support are made of oil-resistant nitrile rubber or fluororubber through a one-time molding process.

[0014] The outer wall of the capsule is coated with a self-healing coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the capsule structure of the molded oil storage tank:

[0016] First, the shoulder braces on both sides provide cushioning support between the capsule and the inner wall of the oil tank. When the oil level in the oil tank changes, the shoulder braces provide a cushioning effect, thereby protecting the capsule.

[0017] Second, during the process of air pressure change inside the oil conservator, the airflow is filtered through a sieve cylinder to remove dust, water vapor, and small particles from the air, preventing impurities from entering the capsule and contaminating the transformer oil.

[0018] Third, during the process of air pressure changes inside the oil conservator, the extension and sliding of the extension tube ensures the stability of the capsule inside the oil conservator and prevents the capsule from tilting to the left or right. This ensures the fit between the capsule and the oil surface, eliminating air between the capsule and the oil surface and isolating the oil surface from contact with air. This prevents oil oxidation and also prevents external moisture and impurities from entering the transformer, keeping the transformer at a certain level of dryness.

[0019] Fourth, by using a rotating drive component, the screen cylinder rotates on the inner wall of the outer cap, allowing the air to pass evenly through the screen holes of the screen cylinder, thus improving the air filtration effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the one-piece molded oil storage tank capsule structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the one-piece molded oil storage tank capsule structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the outer cap portion of this utility model;

[0023] Figure 4 for Figure 1 A magnified view of part A;

[0024] Figure 5 for Figure 2 A magnified view of section B;

[0025] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-capsule, 2-channel, 3-shoulder support, 4-air inlet, 5-extension tube, 6-ring seat, 7-outer cap, 8-sieve cylinder, 9-support column, 10-socket, 11-slot, 12-block, 13-elastic element, 14-linkage frame, 15-dating seat, 16-driven gear, 17-insertion block, 18-bracket, 19-rotating shaft, 20-moving cap, 21-vent. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The following are specific implementation cases and appendices. Figure 1-5 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] A one-piece molded oil tank capsule structure includes a capsule 1. Symmetrically arranged on the top of the outer wall of the capsule 1 are integrally molded shoulder supports 3, each shoulder support 3 being connected to the capsule 1 via a channel 2. The capsule 1 is placed inside the oil tank. Multiple channels 2 are sequentially fixedly installed on both sides of the top of the outer wall of the capsule 1, allowing the shoulder supports 3 to connect to the capsule 1 through these channels. The capsule 1, channels 2, and shoulder supports 3 are integrally molded. The shoulder supports 3 on both sides provide buffering support between the capsule 1 and the inner wall of the oil tank. When the oil level changes within the oil tank, the shoulder supports 3 provide a buffering effect, thus protecting the capsule 1.

[0029] An air inlet 4, integrally formed with the top of capsule 1, is fixedly attached to the top of capsule 1. An extension tube 5 is sleeved on the top of the outer wall of air inlet 4. The extension tube 5 slides against the outer wall of air inlet 4, forming a telescopic tube with air inlet 4. An outer cap 7, fixed to the oil conservator, is sleeved on the top of the outer wall of extension tube 5 and secured to the outside of extension tube 5 by an elastic snap-fit ​​component. A screen cylinder 8 is embedded in the inner cavity of extension tube 5. The opening of screen cylinder 8 faces downward, and a vent hole 21 is longitudinally formed on the top of outer cap 7. During the process of air pressure change in the inner cavity of oil conservator, the air flowing through screen cylinder 8 is filtered to remove dust, water vapor, and small particles from the air, preventing impurities from entering the capsule and contaminating the transformer oil.

[0030] When capsule 1 is placed inside the oil tank, the extension tube 5 and air inlet 4 extend out of the oil tank. Then, the outer cap 7, which is fixed on the oil tank, is snapped onto the outside of the extension tube 5 by the elastic snap-fit ​​component.

[0031] During the process of air pressure change inside the oil conservator, the extension tube 5 extends and slides to ensure the stability of capsule 1 inside the oil conservator, preventing capsule 1 from tilting left or right. This ensures the fit between capsule 1 and the oil surface, eliminating air between capsule 1 and the oil surface and isolating the oil surface from contact with air. This prevents oil oxidation and also prevents external moisture and impurities from entering the transformer, keeping the transformer at a certain level of dryness.

[0032] The outer cap 7 is equipped with a rotary drive component that drives the sieve cylinder 8 to slide circumferentially against the inner wall of the extension tube 5. This rotary drive component causes the sieve cylinder 8 to rotate within the inner wall of the outer cap 7, allowing the air to pass evenly through the sieve holes of the sieve cylinder 8, thus improving the air filtration effect.

[0033] It is worth noting that the rotary drive component includes a rotary shaft 19 rotatably mounted on the top of the outer cap 7. The rotary shaft 19 extends into the inner cavity of the outer cap 7, and a connecting member is provided between the end of the rotary shaft 19 located in the inner cavity of the outer cap 7 and the top of the screen cylinder 8. The rotary shaft 19 rotates on the outer cap 7 via a bearing, and the bearing is fixed to the outer cap 7 via a bearing seat.

[0034] After the outer cap 7 is fixed to the outside of the extension tube 5, the bottom end of the rotating shaft 19 is connected to the screen cylinder 8 through the plug-in component. The screen cylinder 8 rotates on the inner wall of the extension tube 5 through the limiting rings on the upper and lower sides, so that the screen cylinder 8 rotates in close contact with the inner wall of the extension tube 5. The plug-in component ensures that the removal of the outer cap 7 will not affect the screen cylinder 8.

[0035] Furthermore, the insertion component includes a socket 10 fixed to the bottom end of the rotating shaft 19, with a slot 11 at the bottom of the socket 10. A mating seat 15 is fixed to the top of the screen cylinder 8, and insert blocks 17 that engage with the slot 11 are evenly fixed to the top of the outer wall of the mating seat 15. The rotating shaft 19 drives the slot 11 on the socket 10 to engage with the inside of the insert blocks 17. Through the engagement of the insert blocks 17 and the slot 11, the rotating shaft 19 drives the screen cylinder 8 to rotate.

[0036] Additionally, the rotary drive component includes a driven gear 16 sleeved on the outer wall of the rotary shaft 19, and a drive gear meshing with the driven gear 16 is provided on the oil reservoir. A detachable frame is installed on the oil reservoir, and a motor is installed on the frame. The drive gear is fixedly sleeved on the outer wall of the motor output shaft through a centrally located mounting hole. The motor is connected to a power source via wires. The drive gear on the oil reservoir drives the driven gear 16 to rotate, which in turn drives the rotary shaft 19 to rotate, causing the screen cylinder 8 to rotate along with the rotary shaft 19 within the inner wall of the extension tube 5.

[0037] Furthermore, the elastic locking component includes an annular seat 6 sleeved on the outer wall of the extension tube 5, with a locking groove formed between the two annular seats 6. The two annular seats 6 are simultaneously fixedly sleeved on the top of the outer wall of the extension tube 5, forming a circumferential locking groove between them. A support column 9 is circumferentially and uniformly rotatably connected to the outer wall of the outer cap 7, and the support column 9 is inclinedly mounted on the outer wall of the outer cap 7 via an elastic element 13. Brackets 18 are fixedly installed on the circumferential outer wall of the outer cap 7, and a rotating shaft is installed inside each bracket 18. The support column 9 rotates on the bracket 18 via the rotating shaft. The elastic element 13 can be a spring sheet, with its two ends fixed to the outer wall of the outer cap 7 and the outer wall of the support column 9, respectively. The elastic force of the elastic element 13 causes the support column 9 to be inclinedly positioned on the bracket 18.

[0038] A movable cap 20 is sleeved on the outer wall of the rotating shaft 19. A locking block 12 that engages with a slot is fixed to the bottom end of the support column 9. A linkage frame 14 is hinged between the top end of the support column 9 and the movable cap 20. The two ends of the linkage frame 14 are movably sleeved on the outside of the two shafts through mounting holes in the connector. The two shafts are rotatably mounted on the top end of the support column 9 and the outer wall of the movable cap 20, respectively, so that the two ends of the linkage frame 14 are hinged to the support column 9 and the movable cap 20, respectively. The movable cap 20 slides against the top of the outer wall of the rotating shaft 19.

[0039] When connecting the outer cap 7 to the extension tube 5, the movable cap 20 slides on the outer wall of the outer cap 7, causing the movable cap 20 to move one end of the hinged linkage frame 14, causing the other end of the linkage frame 14 to move the hinged support column 9, causing the support column 9 to rotate. At this time, the elastic element 13 generates elastic force, and then the outer cap 7 is slid to the outside of the extension tube 5. At this time, the elastic force of the elastic element 13 is used to make the locking block 12 lock into the slot, making the operation of the outer cap 7 assembly and disassembly process more convenient.

[0040] Both capsule 1 and shoulder support 3 are made of oil-resistant nitrile rubber or fluororubber in one molding process. The one-piece molding of oil-resistant nitrile rubber or fluororubber material allows capsule 1 to form a sealing layer that is tightly attached to the oil surface. It expands or contracts with the oil temperature to isolate the oil from contact with air and prevent oil oxidation.

[0041] The one-piece molding process eliminates seams, increasing the overall tear resistance of the capsule by more than 30% and extending its aging resistance to more than 10 years. The capsule 1 is integrally molded with the air inlet pipe, avoiding the threaded connection gaps between the filter components and the pipes in the traditional structure, preventing air leakage or impurity infiltration, reducing insulation failures caused by transformer oil deterioration, avoiding oil tank leakage caused by capsule breakage, and reducing environmental pollution and safety hazards.

[0042] The outer wall of capsule 1 is coated with a self-healing coating. When the surface of capsule 1 is slightly damaged, the microcapsule-type repair agent in the coating can automatically seep out and fill the crack.

[0043] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0044] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] 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 one-piece oil reservoir capsule structure comprising a capsule (1), characterised in that: The capsule (1) has symmetrically arranged shoulder supports (3) integrally formed with it on the top of its outer wall, and each shoulder support (3) is connected to the capsule (1) through a channel (2). The top of the capsule (1) is fixedly connected to an air inlet (4) integrally formed with it. An extension tube (5) is sleeved on the top of the outer wall of the air inlet (4). An outer cap (7) fixed to the oil storage tank is sleeved on the top of the outer wall of the extension tube (5). The outer cap (7) is fixed to the outside of the extension tube (5) by an elastic snap-fit ​​member. A screen cylinder (8) is embedded in the inner cavity of the extension tube (5).

2. A one-piece oil reservoir bladder capsule structure as defined in claim 1, wherein: The outer cap (7) is provided with a rotating drive component that drives the sieve cylinder (8) to slide circumferentially against the inner wall of the extension tube (5).

3. A one-piece oil reservoir bladder capsule structure as defined in claim 2, wherein: The rotary drive component includes a rotary shaft (19) rotatably disposed on the top of the outer cap (7), the rotary shaft (19) extending into the inner cavity of the outer cap (7), and a plug-in component is provided between the end of the rotary shaft (19) located in the inner cavity of the outer cap (7) and the top of the sieve cylinder (8).

4. A one-piece oil reservoir bladder capsule structure as defined in claim 3, wherein: The plug-in component includes a socket (10) fixed to the bottom end of the rotating shaft (19), a slot (11) is provided at the bottom of the socket (10), a docking seat (15) is fixed to the top of the screen cylinder (8), and plugs (17) that engage with the slot (11) are uniformly fixed to the top of the outer wall of the docking seat (15).

5. A one-piece oil reservoir bladder capsule structure as defined in claim 3, wherein: The rotary drive component includes a driven gear (16) sleeved on the outer wall of the rotary shaft (19), and the oil tank is provided with a drive gear that meshes with the driven gear (16).

6. A one-piece oil reservoir bladder capsule structure as defined in claim 3, wherein: The elastic snap-fit ​​component includes an annular seat (6) sleeved on the outer wall of the extension tube (5), and a slot is formed between the two annular seats (6). The outer wall of the outer cap (7) is circumferentially and rotatably connected to a support column (9), and the support column (9) is inclinedly disposed on the outer wall of the outer cap (7) through an elastic element (13). The outer wall of the rotating shaft (19) is sleeved with a movable cap (20). The bottom end of the support column (9) is fixedly connected to a snap-fit ​​block (12) that engages with the slot. The top end of the support column (9) is hinged to the movable cap (20) with a linkage frame (14).

7. A one-piece oil reservoir bladder capsule structure as defined in claim 1, wherein: Both the capsule (1) and the shoulder support (3) are made of oil-resistant nitrile rubber or fluororubber in a single molding process.

8. A one-piece oil reservoir bladder capsule structure as defined in claim 1, wherein: The outer wall of the capsule (1) is coated with a self-healing coating.

Images