Anti-corrosion transformer oil tank

Abstract

The utility model discloses an anti-corrosion transformer oil tank, and particularly relates to the technical field of transformer oil tanks, the anti-corrosion transformer oil tank comprises a transformer oil tank body, the top of the transformer oil tank body is provided with an oil filling port, and one side of the bottom of the transformer oil tank body is provided with a discharge port. When the pressure intensity in the oil tank is balanced with the outside, the piston can be reset under the elastic force of the spring to be attached to the sealing ring again, sealing is achieved, and the oil tank is prevented from being blocked by the sealing ring, so that the service life of the oil tank is prolonged, and the service life of the oil tank is prolonged. The conditions that the oil tank expands and deforms due to the fact that air pressure inside the oil tank is increased, and original parts inside the oil tank are extruded and damaged are avoided, the service life of the oil tank is prolonged, the filter frame is convenient to disassemble and replace, and practicability is higher. And through the connecting ring, the oil tank is convenient to disassemble, so that the telescopic rod, the spring and the piston are maintained or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer oil tanks, in particular to an anti-corrosion transformer oil tank. Background Art

[0002] In the process of power construction, transformers are needed to perform voltage conversion, current conversion, impedance conversion, isolation and voltage stabilization on electricity. When the transformer is in use, the oil in the transformer tank is needed to dissipate heat and cool the inside of the transformer, and to insulate and maintain the windings. At the same time, transformer oil tanks are used in industry, agriculture, transportation and urban communities, and transformer oil tanks are also used in the use of transformers. At present, the use of transformer oil tanks is very extensive, and it is involved in many areas. However, when the domestic transformer oil tanks are used for a long time in coastal areas (high salt fog areas), they are prone to rust and corrosion, thereby reducing the service life of the oil tank. In order to make the transformer oil tank corrosion-resistant, it is necessary to use the electrophoresis process to treat it during the production process. The electrophoresis process is: pre-degreasing → degreasing → water washing 1 → water washing 2 → surface adjustment → phosphating → water washing 3 → water washing 4 → pure water washing → platform draining → electrophoresis → UF1 → UF2 → DI water washing → platform draining → electrophoresis drying → inspection; and after the electrophoresis process, the oil tank is sprayed with plastic (the plastic powder is different from the conventional plastic powder, and the zinc-rich base powder 100-120um + flour 100-120um is sprayed twice, C5 grade), so that the oil tank has good corrosion resistance.

[0003] At present, during the use of the transformer oil tank, as the oil in the oil tank is used to dissipate heat for the transformer, the oil temperature gradually rises, causing the pressure in the oil tank to gradually increase. If the pressure is not relieved, the volume of the oil tank will expand rapidly. When the oil tank expands to a certain extent, it will cause the transformer oil tank to deform, thereby squeezing and damaging the internal components of the transformer oil tank, reducing the service life of the transformer oil tank, and the practicality is relatively poor. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-corrosion transformer oil tank to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an anti-corrosion transformer oil tank, comprising a transformer oil tank body, a refueling port is provided on the top of the transformer oil tank body, a discharge port is provided on one side of the bottom of the transformer oil tank body, a plurality of corrugated heat sinks are symmetrically provided on the outer side of the transformer oil tank body, a pressure relief mechanism is provided on one side of the top of the transformer oil tank body, the pressure relief mechanism comprises a breathable cover, and the breathable cover is arranged on one side of the top of the transformer oil tank body, a connecting cylinder is fixedly installed on the top of the transformer oil tank body, an opening communicating with the connecting cylinder and the breathable cover is opened on the top of the transformer oil tank body, a sealing ring is fixedly installed in the connecting cylinder, a piston adapted to the sealing ring is provided on the top of the sealing ring, a telescopic rod is provided on the top of the piston, a telescopic rod is movably embedded in the top of the breathable cover, and the telescopic end of the telescopic rod is fixedly connected to the piston, a spring is sleeved on the outer side of the telescopic rod between the piston and the inner top wall of the breathable cover, and a plurality of through grooves are symmetrically opened on the outer wall of the breathable cover.

[0006] Furthermore, the pressure relief mechanism also includes a filter frame, a plurality of mounting grooves are symmetrically provided on the top of the air vent, and the mounting grooves are connected to the through grooves, a filter frame is movably installed in the mounting grooves, a filter screen and a waterproof breathable membrane are symmetrically provided on the left and right sides of the inner side of the filter frame, a handle is provided on the top of the filter frame, chambers are provided inside the air vent between adjacent through grooves, a rotating rod is rotatably installed in the chamber, and the upper end of the rotating rod is connected to a twist handle above the air vent, and support rods are symmetrically provided on the outer wall of the rotating rod, and the two support rods are movably connected to plug rods at one end relative to the outside through a connecting rod, and the plug rods are respectively inserted into the filter frame side wall openings at one side at one end relative to the outside. The plug hole of the rotating rod is provided with a torsion spring under the plug rod on the outside, and the two ends of the torsion spring are respectively fixedly connected to the rotating rod and the inner wall of the chamber. Through the pressure relief mechanism, when the air pressure in the transformer oil tank body increases, the piston can be moved up and separated from the sealing ring, so that the transformer oil tank body is connected with the outside world, thereby realizing the pressure relief treatment inside the transformer oil tank body, avoiding the oil tank from expanding due to the increase of air pressure in the oil tank, thereby reducing it or damaging the internal components of the transformer, avoiding reducing its service life, and at the same time, it can intercept external water and dust from entering the interior of the transformer oil tank body, and facilitate the disassembly of the filter frame to clean or replace the filter screen and the waterproof breathable membrane.

[0007] Furthermore, a connecting ring is fixedly connected to the bottom of the air hood, a connecting groove adapted to the air hood is provided on the top of the transformer oil tank body, and a plurality of external threads and internal threads are respectively provided on the outer wall of the connecting ring and the inner side wall of the connecting groove, so as to facilitate the separation of the air hood and the transformer oil tank body, thereby facilitating the replacement or maintenance of the piston, telescopic rod and spring.

[0008] Furthermore, the piston is a convex structure, and a sealing ring is sleeved on the outer wall of the piston located inside the sealing ring so as to adapt to the sealing ring and make the outer wall fit with the sealing ring to improve its sealing performance.

[0009] Furthermore, the rotating rod is rotatably connected to the breathable cover via a bearing, the support rod, connecting rod and insertion rod are all distributed in a circular equidistant array, the two ends of the connecting rod are respectively hinged to the support rod and the insertion rod, and the support rod and connecting rod are located above the insertion rod to transmit power and synchronously drive multiple insertion rods to move.

[0010] Furthermore, the filter frame is an arc-shaped structure, and the filter frame is concentric with the air cover. A sealing layer is provided between the filter frame and the inner wall of the mounting groove so that the curvature of the filter frame and the air cover can be adapted. The sealing layer is provided so that the connection between the filter frame and the air cover has good sealing properties.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] 1. The utility model uses a pressure relief mechanism. When the air pressure in the transformer oil tank increases, the piston pushes the telescopic rod and squeezes the spring to separate the piston from the sealing ring, so that the inside of the transformer oil tank is connected to the outside world, thereby achieving pressure relief treatment inside the transformer oil tank. When the pressure inside the oil tank is balanced with the outside world, the piston will reset under the elastic force of the spring and fit the sealing ring again to achieve sealing, thereby avoiding the situation where the oil tank expands and deforms due to the increase in internal air pressure, and the internal components of the oil tank are squeezed and damaged, thereby extending its service life, and the filter frame can be easily disassembled and replaced, which is convenient to use and more practical.

[0013] 2. The utility model uses a connecting ring to thread the air vent cover and the transformer oil tank body, which is convenient for disassembly, thereby maintaining, repairing or replacing the telescopic rod, spring and piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the utility model between the air permeable cover, the connecting tube and the transformer oil tank body;

[0017] Figure 3 It is a schematic diagram of the partial cross-sectional structure between the breathable cover and the connecting tube of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure between the filter frame, filter screen and waterproof breathable membrane of the utility model;

[0019] Figure 5 This utility model Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0020] In the figure: 1. transformer oil tank body; 2. corrugated heat sink; 3. breathable cover; 4. filter frame; 5. filter screen; 6. waterproof breathable membrane; 7. connecting tube; 8. sealing ring; 9. piston; 10. telescopic rod; 11. spring; 12. rotating rod; 13. supporting rod; 14. connecting rod; 15. plug rod; 16. torsion spring; 17. connecting ring; 18. mounting groove; 19. through groove; 20. chamber. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 - Figure 5An anti-corrosion transformer oil tank shown in the figure comprises a transformer oil tank body 1, a refueling port is provided on the top of the transformer oil tank body 1, a discharge port is provided on one side of the bottom of the transformer oil tank body 1, a plurality of corrugated heat sinks 2 are symmetrically provided on the outer side of the transformer oil tank body 1, a pressure relief mechanism is provided on one side of the top of the transformer oil tank body 1, the pressure relief mechanism comprises a breathable cover 3, and the breathable cover 3 is arranged on one side of the top of the transformer oil tank body 1, a connecting cylinder 7 is fixedly installed on the top of the transformer oil tank body 1, an opening communicating with the connecting cylinder 7 and the breathable cover 3 is opened on the top of the transformer oil tank body 1, a sealing ring 8 is fixedly installed in the connecting cylinder 7, a piston 9 adapted to the sealing ring 8 is provided on the top of the sealing ring 8, a telescopic rod 10 is provided on the top of the piston 9, the telescopic rod 10 is movably embedded and installed on the top of the breathable cover 3, and the telescopic end of the telescopic rod 10 is fixedly connected to the piston 9, a spring 11 is sleeved on the outer side of the telescopic rod 10 between the piston 9 and the inner top wall of the breathable cover 3, and a plurality of through grooves 19 are symmetrically opened on the outer wall of the breathable cover 3. In this example, the pressure relief mechanism also includes a filter frame 4, a plurality of mounting grooves 18 are symmetrically provided on the top of the air vent 3, and the mounting grooves 18 are connected to the through grooves 19, a filter frame 4 is movably installed in the mounting grooves 18, a filter screen 5 and a waterproof breathable membrane 6 are symmetrically provided on the left and right sides of the inner side of the filter frame 4, a handle is provided on the top of the filter frame 4, a chamber 20 is provided between adjacent through grooves 19 inside the air vent 3, a rotating rod 12 is rotatably installed in the chamber 20, and the upper end of the rotating rod 12 is connected to a twist handle above the air vent 3, and the outer wall of the rotating rod 12 is symmetrically provided with support rods 13, and the two support rods 13 are movably connected to the insertion rods 15 at the opposite outer ends through the connecting rods 14, and the opposite outer ends of the insertion rods 15 are respectively inserted into the side wall openings of the filter frame 4 on one side. In the socket provided, a torsion spring 16 is sleeved on the outer side of the rotating rod 12 below the inserting rod 15, and the two ends of the torsion spring 16 are respectively fixedly connected to the rotating rod 12 and the inner wall of the chamber 20. Through the pressure relief mechanism, when the air pressure in the transformer oil tank body 1 increases, the piston 9 can be moved up and separated from the sealing ring 8, so that the transformer oil tank body 1 is connected with the outside world, thereby realizing the internal pressure relief treatment of the transformer oil tank body 1, avoiding the oil tank from expanding due to the increase of the air pressure in the oil tank, thereby reducing it or damaging the internal components of the transformer, avoiding reducing its service life, and at the same time, it can intercept the external water and dust from entering the transformer oil tank body 1, and facilitate the disassembly of the filter frame 4, so as to clean or replace the filter screen 5 and the waterproof breathable membrane 6. In this example, a connecting ring 17 is fixedly connected to the bottom of the air hood 3, and a connecting groove adapted to the air hood 3 is provided on the top of the transformer oil tank body 1. The outer wall of the connecting ring 17 and the inner side wall of the connecting groove are respectively provided with a plurality of external threads and internal threads, so that the air hood 3 and the transformer oil tank body 1 can be disassembled, thereby facilitating the replacement or maintenance of the piston 9, the telescopic rod 10, and the spring 11.

[0023] In this example, the piston 9 is a convex structure, and the outer wall of the piston 9 located on the inner side of the sealing ring 8 is sleeved with a sealing ring so as to adapt to the sealing ring 8, so that the outer wall and the sealing ring 8 fit together and improve the sealing performance. In this example, the rotating rod 12 is rotatably connected to the air vent 3 through a bearing, and the support rod 13, the connecting rod 14 and the plug rod 15 are all arranged in a circular equidistant array. The two ends of the connecting rod 14 are respectively hinged to the support rod 13 and the plug rod 15, and the support rod 13 and the connecting rod 14 are located above the plug rod 15 so as to transmit power and synchronously drive multiple plug rods 15 to move. In this example, the filter frame 4 is an arc structure, and the filter frame 4 is concentric with the air vent 3. A sealing layer is provided between the filter frame 4 and the inner wall of the mounting groove 18 so as to adapt the curvature of the filter frame 4 to the air vent 3. The sealing layer is provided so as to make the connection between the filter frame 4 and the air vent 3 have good sealing performance.

[0024] The working principle of the utility model is as follows: when in use, when the oil temperature in the transformer tank body 1 increases, the air pressure inside the transformer tank body 1 increases, which will cause the air pressure to push the piston 9 to move up in the connecting tube 7, and at the same time, the piston 9 will separate from the sealing ring 8, and the piston 9 will push the telescopic end of the telescopic rod 10 to contract, and the piston 9 will cooperate with the inner wall of the breathable cover 3 to squeeze the spring 11, and at the same time, the separation between the piston 9 and the sealing ring 8 makes the inside of the transformer tank body 1 connected with the breathable cover 3, thereby realizing the pressure relief of the air pressure inside the transformer tank body 1. When the air pressure inside the transformer tank body 1 is reduced to balance with the outside world, the piston 9 will reset and move downward under the elastic force of the spring 11, thereby fitting with the sealing ring 8, realizing the partition between the connecting tube 7 and the inside of the transformer tank body 1, and the setting of the filter frame 4 and the filter screen 5 enables it to intercept dust, water, etc. from the outside. When the filter frame 4 needs to be disassembled, the filter frame When the filter 4 or the filter screen 5 is to be cleaned and replaced, the twist handle can be twisted to drive the rotating rod 12 to rotate, so that the rotating rod 12 will drive the support rod 13 and then drive the connecting rod 14, so that the connecting rod 14 drives the connected plug rod 15 to move out of the insertion hole, so that the handle can be pulled to drive the filter frame 4 to move it out of the installation groove 18. When installing the filter frame 4, the above steps can be repeated, and then after the filter frame 4 is inserted into the installation groove 18, the force applied to the twist handle is released, so that the rotating rod 12 is reset and rotated under the torsion of the torsion spring 16, so that the plug rod 15 is reset and inserted into the corresponding insertion hole on the side wall of the filter frame 4, and the installation of the filter frame 4 is completed; and when the piston 9, the telescopic rod 10 or the spring 11 needs to be maintained, repaired or replaced, the air cover 3 can be twisted to drive the connecting ring 17 to move, so that the connecting ring 17 is separated from the connecting groove, thereby completing the disassembly of the air cover 3, that is, the piston 9, the telescopic rod 10 or the spring 11 can be maintained, repaired or replaced, which is more convenient to use and more practical.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-corrosion transformer oil tank, comprising a transformer oil tank body (1), wherein the top of the transformer oil tank body (1) is provided with a refueling port, and one side of the bottom of the transformer oil tank body (1) is provided with a discharge port, characterized in that: The outer side of the transformer oil tank body (1) is symmetrically provided with a plurality of corrugated heat sinks (2); a pressure relief mechanism is provided on one side of the top of the transformer oil tank body (1); the pressure relief mechanism comprises a ventilating cover (3), and the ventilating cover (3) is arranged on one side of the top of the transformer oil tank body (1); a connecting cylinder (7) is fixedly installed on the top of the transformer oil tank body (1); an opening is provided on the top of the transformer oil tank body (1) and is connected to the connecting cylinder (7) and the ventilating cover (3); a connecting cylinder (7) is fixedly installed in the connecting cylinder (7); A sealing ring (8) is provided, a piston (9) adapted to the sealing ring (8) is provided on the top of the sealing ring (8), a telescopic rod (10) is provided on the top of the piston (9), the telescopic rod (10) is movably embedded in the top of the air vent (3), and the telescopic end of the telescopic rod (10) is fixedly connected to the piston (9), a spring (11) is sleeved on the outside of the telescopic rod (10) between the piston (9) and the inner top wall of the air vent (3), and a plurality of through grooves (19) are symmetrically provided on the outer wall of the air vent (3).

2. The anti-corrosion transformer oil tank according to claim 1, characterized in that: The pressure relief mechanism also includes a filter frame (4), a plurality of mounting grooves (18) are symmetrically provided on the top of the air permeable cover (3), and the mounting grooves (18) are connected to the through grooves (19), a filter frame (4) is movably installed in the mounting grooves (18), a filter screen (5) and a waterproof breathable membrane (6) are symmetrically provided on the left and right sides of the inner side of the filter frame (4), a handle is provided on the top of the filter frame (4), chambers (20) are provided inside the air permeable cover (3) between adjacent through grooves (19), and a rotating rod (12) is rotatably installed in the chamber (20) The upper end of the rotating rod (12) is connected to a twist handle above the air vent (3); the outer wall of the rotating rod (12) is symmetrically provided with support rods (13); the opposite outer ends of the two support rods (13) are movably connected to an insertion rod (15) through a connecting rod (14); the opposite outer ends of the insertion rods (15) are respectively inserted into insertion holes provided on the side wall of the filter frame (4); a torsion spring (16) is sleeved on the outer side of the rotating rod (12) below the insertion rod (15), and the two ends of the torsion spring (16) are respectively fixedly connected to the rotating rod (12) and the inner wall of the chamber (20).

3. The anti-corrosion transformer oil tank according to claim 1, characterized in that: A connecting ring (17) is fixedly connected to the bottom of the air vent (3), a connecting groove adapted to the air vent (3) is provided on the top of the transformer oil tank body (1), and a plurality of external threads and internal threads are respectively provided on the outer wall of the connecting ring (17) and one side wall of the connecting groove.

4. The anti-corrosion transformer oil tank according to claim 2, characterized in that: The piston (9) is a convex structure, and a sealing ring is sleeved on the outer wall of the inner part of the sealing ring (8) of the piston (9).

5. The anti-corrosion transformer oil tank according to claim 2, characterized in that: The rotating rod (12) is rotatably connected to the air permeable cover (3) via a bearing; the support rod (13), the connecting rod (14) and the insertion rod (15) are all arranged in a circumferentially equidistant array; the two ends of the connecting rod (14) are respectively hinged to the support rod (13) and the insertion rod (15); the support rod (13) and the connecting rod (14) are located above the insertion rod (15).

6. The anti-corrosion transformer oil tank according to claim 2, characterized in that: The filter frame (4) is an arc-shaped structure, and the filter frame (4) and the air permeable cover (3) are cocentric. A sealing layer is provided between the filter frame (4) and the inner wall of the installation groove (18).

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