CN117352270B - Fully-sealed oil-immersed transformer - Google Patents

Abstract

The utility model relates to a transformer's field especially relates to a totally enclosed oil-immersed transformer, and it is including the oil tank that is used for being full of transformer oil, be provided with the oil storage post on the oil tank, be formed with in the oil storage post with the oil storage chamber of the inside intercommunication of oil tank, transparent observation window has been seted up on the oil storage post, transparent observation window internal fixation is provided with the transparent observation board that is used for sealedly, the oil storage intracavity floats and is provided with the target, be provided with on the target and stretch into to the cursory box in the oil tank, be provided with the colour lump on the target, the colour lump highly position in transparent observation window represents the oil level in the oil tank. The oil filling amount control device has the effect of conveniently controlling the oil filling amount.

Description

Fully-sealed oil-immersed transformer

Technical Field

The application relates to the field of transformers, in particular to a fully-sealed oil-immersed transformer.

Background

The oil immersed transformer is a transformer using oil as main insulating means and oil as cooling medium, and its body (winding and iron core) is mounted in the oil tank filled with transformer oil, the oil tank is welded by steel plate, and the oil tank of the medium-small transformer is formed from tank shell and tank cover, and the body of the transformer is placed in the tank shell, and the tank cover is opened to lift out the body for maintenance.

In order to prevent the oil from overflowing due to overfilling, the oil filling amount of the fully-sealed oil-immersed transformer needs to be carefully and slightly controlled.

Disclosure of Invention

In order to solve the problem that the oil filling amount needs to be carefully controlled in a trace amount in order to prevent overflow due to overfilling of oil, the application provides a fully-sealed oil-immersed transformer.

The application provides a totally enclosed oil-immersed transformer adopts following technical scheme:

the utility model provides a totally enclosed oil-immersed transformer, is including being used for being full of the oil tank of transformer oil, be provided with the oil storage post on the oil tank, be formed with in the oil storage post with the oil storage chamber of the inside intercommunication of oil tank, transparent observation window has been seted up on the oil storage post, transparent observation window internal fixation is provided with the transparent observation board that is used for sealedly, the oil storage intracavity floats and is provided with the stock, be provided with on the stock and stretch into to the cursory box in the oil tank, be provided with the color lump on the stock, the color lump is represented in the high position of transparent observation window the oil level in the oil tank.

Through adopting above-mentioned technical scheme, float the box and float from top to bottom along with the liquid level of oil in the oil tank and drive the colour lump and reciprocate, observe the liquid level of oil in the oil tank through transparent observation board and survey the high position of colour lump, make things convenient for the user to observe, also make the user can be after the oil injection is high to a take the place, observe the high of colour lump and stop the operation, the probability that leads to the oiling to be overfill because being difficult to observe has been reduced, also reduce and slow down the oiling speed when leading to the sensation to fill soon because of being difficult to observe, whether the observation is overflowed soon, judge the opportunity that stops the operation, the probability that leads to oiling efficiency to become low has improved oiling efficiency, the observation has been made things convenient for, oiling operation has been convenient for.

Optionally, be formed with sealed conical surface on the oil storage chamber inner wall, sealed conical surface with the inside intercommunication of oil tank, sealed conical surface is close to the position of oil tank inner space is the flaring setting, be provided with flexible sealing washer on the cursory box, cursory box come-up makes flexible sealing washer supports tightly sealed conical surface is last to realize to oil storage chamber open-ended seal.

Through adopting above-mentioned technical scheme, when cursory box come-up to certain height, flexible sealing washer and sealed conical surface conflict seal, reduced the oiling and overfilled and lead to the probability that overflows, played the guard action, reduced the probability that transformer oil pollutes the environment, also through the slope guide effect of sealed conical surface simultaneously, reduced cursory box crooked probability.

Optionally, be provided with two at least spacing discs on the target, adjacent the spacing disc will the colour lump presss from both sides in the centre, spacing disc border lateral wall with the laminating of oil storage intracavity wall is slided in order to spacing the target with the direction of floating of cursory box.

Through adopting above-mentioned technical scheme, carry out spacingly through the slip direction of spacing dish to the sighting rod, further reduced cursory box crooked probability, improved stability.

Optionally, still be provided with the oil inlet that is used for the oiling on the oil tank, be provided with the oil feed valve on the oil inlet in order to carry out the oiling, offered the spacing groove on the oil tank inner wall, the sliding of spacing groove is provided with the sealing plate, the sealing plate is used for sliding will the oil inlet opening is sealed, the spacing groove inner wall is used for spacing the slip direction of sealing plate, be provided with the control lever on the cursory box, it has the connecting rod to articulate on the control lever, the connecting rod still articulates on the sealing plate, makes the promotion when cursory box comes up the sealing plate will the oil inlet opening is sealed.

Through adopting above-mentioned technical scheme, when the fluid face in the oil tank reaches appointed height, the cursory box come-up to appointed height, and cursory box drives the connecting rod through the control rod this moment, and the connecting rod promotes the sealing plate and seals the oil inlet, has prevented the oil that gets into the oil tank, and the cooperation flexible sealing washer has further played the probability that prevents oil to spill over, has played the guard action, has also played the guard action to the environment.

Optionally, the slot has been seted up on the oil tank inner wall, set up on the sealed conical surface with the spout of slot intercommunication, be provided with on the cursory box and slide the energy storage board in the spout, be provided with the energy storage piece on the energy storage board, the energy storage piece still sets up on the control rod, the slot is used for supplying the energy storage piece and the control rod slides in, be provided with trigger assembly on the slot inner wall, trigger assembly is used for right the control rod slides in the slot is spacing.

Through adopting above-mentioned technical scheme, store the buoyancy of cursory box come up through energy storage spare and trigger assembly, release the spacing of trigger assembly when cursory box come up to appointed height for the sealing plate is direct with the oil inlet shutoff completely after the power release that energy storage spare stored, has reduced when cursory box is come up gradually and has driven the sealing plate to gradually with the oil inlet shutoff, along with the oil inlet gradually becoming little, the oil yield is unchangeable, leads to the velocity of flow of oil to increase the probability of striking electrical equipment in the oil tank.

Optionally, set up trigger groove and the control groove that is linked together on the slot inner wall, trigger the subassembly including sliding the setting and be in trigger plate and the sliding setting in the control groove are in the first control panel, trigger plate is used for follow stretch out in the trigger groove and conflict in order to spacing on the control rod, first control panel is used for supplying the energy storage board come-up is contradicted and is slided, be formed with the control inclined plane on the trigger plate, first control panel is slided and is contradicted and be in on the control inclined plane, in order to drive trigger plate slip is relieved to the conflict spacing of control rod, trigger groove inner wall with be provided with the piece that resets between the trigger plate, the piece that resets is used for with the trigger plate is ejecting trigger groove extremely on the control rod.

By adopting the technical scheme, the control rod is blocked by the trigger plate so that the floating force of the floating box is stored in the energy storage part, when the floating box continuously floats upwards to drive the first control plate to abut on the control inclined plane, the trigger plate is pushed to slide to release the limit of the control rod, the energy storage in the energy storage part is released once to drive the sealing plate to seal the opening of the oil inlet, meanwhile, the sliding of the control rod is buffered due to the existence of oil in the slot, the probability that the energy storage part releases kinetic energy to cause damage to the control rod or the energy storage part is reduced, and the protection effect is achieved; meanwhile, when the float box sinks, the trigger plate is pushed out and reset through the reset piece, and the control rod is limited again, so that the float box is convenient and quick.

Optionally, be provided with the second control panel on the first control panel, the energy storage board slides first control panel with between the second control panel, the second control panel is used for supplying the energy storage board come down to conflict, so as to drive first control panel follow withdraw from on the control inclined plane.

Through adopting above-mentioned technical scheme, make cursory box when sinking through the second control panel, drive first control panel and reset, automatic re-setting, convenient and fast.

Optionally, an elastic element is arranged between the oil storage cavity and the float box, and the elastic element is used for pushing the float box in the sinking direction.

Through adopting above-mentioned technical scheme, the subsidence of cursory box has been promoted through the elastic component, has reduced because of the friction between first control panel and the trigger plate, leads to cursory box to be difficult to the probability of subsidence, and is spacing to cursory box's minimum position through elastic component and energy storage plate simultaneously, hangs cursory box in the oil tank, when having reduced the oil liquid level in the oil tank too low, cursory box and the probability that the stock deviate from the oil storage intracavity, has improved stability.

Optionally, a stabilizing plane is formed on the trigger plate, the stabilizing plane is connected with the control inclined plane, the energy storage plate pushes the first control plate to slide across the control inclined plane and then enter the stabilizing plane, and the stabilizing plane is parallel to the sliding direction of the energy storage plate.

By adopting the technical scheme, the probability of applying reverse force to the first control panel through the control slope is reduced through the stable plane, and the stability is improved.

Optionally, balls are provided on the first control board in a rolling manner, and the balls roll on the side wall of the trigger plate.

Through adopting above-mentioned technical scheme, through the ball with the sliding friction between first control panel and the trigger plate change into rolling friction, greatly reduced the frictional force between first control panel and the trigger plate to the frictional force has reduced the probability that the upper and lower floating of floating box caused the influence.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the oiling efficiency is improved, the observation is convenient, and the oiling operation is convenient.

2. The probability that the flow velocity of oil increases to impact electrical equipment in the oil tank is reduced when the float box gradually floats upwards to drive the sealing plate to gradually plug the oil inlet, and the oil outlet quantity is unchanged along with the gradual reduction of the oil inlet.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a fully sealed oil-immersed transformer according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view taken along line A-A in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 2.

Fig. 4 is a schematic cross-sectional view taken along line C-C of fig. 1.

Fig. 5 is an enlarged schematic view of the structure at D in fig. 4.

Fig. 6 is a schematic diagram showing the structure of the trigger assembly.

Fig. 7 is an enlarged schematic view of the structure at E in fig. 6.

Fig. 8 is an enlarged schematic view of the structure at F in fig. 6.

Reference numerals illustrate: 1. an oil tank; 11. an oil storage column; 12. an oil storage chamber; 13. a transparent viewing window; 14. a transparent viewing plate; 2. a target; 21. a float box; 22. color blocks; 23. sealing the conical surface; 24. a flexible sealing ring; 25. a limiting disc; 3. an oil inlet; 31. an oil inlet valve; 32. a limit groove; 33. sealing plate; 34. a control lever; 341. a rod groove; 35. a connecting rod; 4. a slot; 41. a chute; 42. an energy storage plate; 43. an energy storage member; 5. a trigger assembly; 51. a trigger slot; 511. a trigger plate; 512. a control inclined plane; 513. a reset member; 514. a stabilization plane; 515. limiting long strips; 516. a limiting long groove; 52. a control groove; 521. a first control board; 522. a second control board; 523. a limit bar; 524. a limit groove; 6. an elastic member; 61. and (3) rolling balls.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The embodiment of the application discloses a full-sealed oil immersed transformer. Referring to fig. 1 and 2, the fully sealed oil immersed transformer comprises an oil tank 1 filled with transformer oil, in this embodiment, the direction of the gravity direction is downward, the direction opposite to the downward direction is upward, an oil storage column 11 is fixedly connected to the upper end surface of the oil tank 1, an oil storage cavity 12 communicated with the inside of the oil tank 1 is formed in the oil storage column 11, in this embodiment, the oil storage cavity 12 adopts a cylindrical cavity, in practice, other cylindrical cavities can be adopted, the top end of the oil storage column 11 can be provided with an air vent with a filtering function, a sealing piece capable of switching between two states of ventilation or sealing through threaded connection can be adopted, or a sealed airtight type which cannot be ventilated is adopted. The oil storage column 11 is provided with a transparent observation window 13, the transparent observation window 13 penetrates through the side wall of the oil storage column 11, a transparent observation plate 14 used for sealing is fixed in the transparent observation window 13, in the embodiment, insulating sealing glass can be adopted for the transparent observation plate 14, and the transparent observation plate 14 can be fixed with the inner wall of the transparent observation window 13 through embedding and reuse sealing glass cement.

Referring to fig. 2, a marker post 2 is floating in the oil storage cavity 12, the length direction of the marker post 2 extends along the opening direction of the oil storage cavity 12, the length direction of the marker post 2 coincides with the central axis direction of the oil storage cavity 12, a float box 21 extending into the oil tank 1 is fixedly connected to the lower end of the marker post 2, in this embodiment, the float box 21 is cylindrical, and the marker post 2 is fixedly connected to the central position of the float box 21, that is, the length direction of the marker post 2 coincides with the center of gravity of the float box 21. The color block 22 is sleeved and fixed on the marker post 2, the color block 22 is attached to the inner wall of the oil storage cavity 12 and slides, the color block 22 can be made of low-density materials with striking colors such as red, orange and the like, for example, special foam coated with pigments with colors such as red, orange and the like is coated, and the height position of the color block 22 in the transparent observation window 13 represents the oil level in the oil tank 1.

Referring to fig. 2 and 3, a sealing conical surface 23 is formed on the inner wall of the oil storage cavity 12, the sealing conical surface 23 is a conical surface, the sealing conical surface 23 is communicated with the inside of the oil tank 1, the sealing conical surface 23 is located between the oil storage cavity 12 and the inner space of the oil tank 1, the position with smaller cross-sectional diameter of the conical surface of the sealing conical surface 23 is connected with the inner wall of the oil storage cavity 12, and the position with enlarged cross-sectional diameter of the conical surface of the sealing conical surface 23 is connected with the inner wall of the oil tank 1, namely, the position of the sealing conical surface 23 close to the inner space of the oil tank 1 is in flaring arrangement.

Referring to fig. 3, the float box 21 floats up and down in a space defined by the sealing cone 23, and the cross-sectional diameter of the float box 21 is larger than the opening cross-sectional diameter of the sealing cone 23 communicating with the inner wall of the oil storage chamber 12. The side wall of the float box 21 facing the sealing conical surface 23 is fixedly connected with a flexible sealing ring 24, in the embodiment, the flexible sealing ring 24 is made of oil-resistant and high-temperature-resistant rubber, and the float box 21 floats upwards to enable the flexible sealing ring 24 to abut against the sealing conical surface 23 so as to seal an opening of the oil storage cavity 12.

Referring to fig. 2, two limiting plates 25 are fixedly connected to the marker post 2, the two limiting plates 25 are distributed along the length direction of the marker post 2, the two limiting plates 25 clamp the color block 22 in the middle, and the side wall of the circumference of the limiting plate 25 is attached to the inner wall of the oil storage cavity 12 to slide so as to limit the floating direction of the marker post 2 and the float box 21.

Referring to fig. 1, 4 and 5, an oil inlet 3 for filling oil is further formed in a position, close to the bottom, of the side edge of the oil tank 1, and an oil inlet valve 31 is fixedly connected to the oil tank 1, and the oil inlet valve 31 covers an opening of the oil inlet 3 to control opening and closing of the oil filling. A limit groove 32 is formed in the position, close to the bottom end, of the inner wall of the oil tank 1, the limit groove 32 is communicated with the oil inlet 3, and the extending and forming direction of the limit groove 32 is perpendicular to the gravity direction.

Referring to fig. 5, a sealing plate 33 is slid in the limiting groove 32, the width of the cross section of the limiting groove 32 is larger than the diameter of the opening cross section of the oil inlet 3, the diameter of the sealing plate 33 is larger than the diameter of the opening cross section of the oil inlet 3, the side wall of the sealing plate 33 is abutted against the inner wall of the limiting groove 32, the sealing plate 33 is used for sliding to seal the opening of the oil inlet 3, and the inner wall of the limiting groove 32 is used for limiting the sliding direction of the sealing plate 33.

Referring to fig. 3, an inner wall of an upper end of the oil tank 1 is provided with a slot 4, a direction of opening the slot 4 is parallel to a floating direction of the float box 21, a sealing conical surface 23 is provided with a chute 41 communicated with the slot 4, the direction of opening the chute 41 is the same as the direction of opening the slot 4, and the chute 41 is transversely opened to be communicated with the slot 4 along a direction perpendicular to a gravity direction.

Referring to fig. 3, an energy storage plate 42 sliding in a chute 41 is fixedly connected to a side wall of the float box 21, the energy storage plate 42 passes through the chute 41 and extends into the slot 4, the energy storage plate 42 can slide up and down along with up and down floating of the float box 21 in the chute 41, an energy storage member 43 is fixedly connected to an end portion of the energy storage plate 42 located in the slot 4, in this embodiment, the energy storage member 43 can adopt a spring or a hook spring, one end of the energy storage member 43 is fixedly connected to the end portion of the energy storage plate 42, a control rod 34 is fixedly connected to the other end of the energy storage member 43, and a telescopic direction of the energy storage member 43 stretches along an opening direction of the slot 4.

Referring to fig. 3, 5 and 6, a rod groove 341 is further formed on the inner wall of the oil tank 1, two ends of the rod groove 341 are respectively communicated with the slot 4 and the limit groove 32, that is, the rod groove 341 extends downwards from the slot 4 to be communicated with the limit groove 32, the control rod 34 is located in the rod groove 341, and the control rod 34 also extends downwards to a position close to the limit groove 32.

Referring to fig. 3, 5 and 7, a connecting rod 35 is hinged to the end of the control rod 34 far away from the energy storage member 43, one end of the connecting rod 35 is hinged to the end of the control rod 34, and the other end of the connecting rod 35 is hinged to the sealing plate 33, so that the sealing plate 33 is pushed to seal the opening of the oil inlet 3 when the float box 21 floats upwards.

Referring to fig. 3, the energy storage member 43 is extended and retracted in the slot 4, and the end of the control lever 34 near the slot 4 can be moved into or out of the slot 4 as the float case 21 floats up and down. The trigger assembly 5 is installed on the inner wall of the slot 4, and the trigger assembly 5 is used for limiting the sliding of the control rod 34 into the slot 4.

Referring to fig. 3 and 8, the inner wall of the slot 4 is provided with a trigger slot 51 and a control slot 52, which are communicated with each other, the opening depth of the trigger slot 51 is larger than that of the control slot 52, the trigger assembly 5 comprises a trigger plate 511 sliding in the trigger slot 51 and a first control plate 521 sliding in the control slot 52, and the trigger plate 511 and the first control plate 521 are L-shaped. One end of the trigger plate 511 extends from the trigger slot 51 into the slot 4, and is used for abutting against the upper end surface of the control rod 34 to block the control rod 34 from entering the slot 4, the other end of the trigger plate 511 is bent upwards in the trigger slot 51 and extends upwards, and the end of the trigger plate 511 located in the slot 4 is U-shaped so as to allow the energy storage piece 43 to pass through for abdication. One end of the first control board 521 extends from the control slot 52 into the slot 4, the other end of the first control board 521 is located in the control slot 52 and extends downward after being bent downward, and the side wall of the first control board 521 at the end abuts against the side wall of the trigger board 511 facing the slot 4.

Referring to fig. 3 and 8, a limiting long groove 515 is fixedly connected to the trigger plate 511, a limiting long groove 516 is formed in the inner wall of the trigger groove 51, the limiting long groove 515 and the limiting long groove 516 extend along the direction perpendicular to the gravity direction, the limiting long groove 516 extends towards the deep part of the trigger groove 51, the limiting long groove 515 slides in the limiting long groove 516, and the trigger plate 511 slides along the sliding direction of the limiting long groove 515.

Referring to fig. 3 and 8, the first control board 521 is configured to enable the energy storage board 42 to float upwards, collide with and slide, and a control inclined plane 512 is formed on a side wall of the upper end portion of the trigger board 511 facing the slot 4, the control inclined plane 512 inclines in a direction that is closer to the slot 4 more upwards, and the first control board 521 slides and collides with the control inclined plane 512 to drive the trigger board 511 to slide in a direction of the depth of the trigger slot 51, so as to withdraw from the slot 4 to release the collision limit of the control lever 34. The reset piece 513 is installed between the bottom wall of the trigger slot 51 facing the slot 4 and the trigger plate 511, in this embodiment, the reset piece 513 may use a spring or a hook spring, one end of the reset piece 513 abuts against the inner wall of the trigger slot 51 far away from the slot 4, the other end of the reset piece 513 abuts against the side wall of the trigger plate 511 facing the opening of the trigger slot 51, and the reset piece 513 stretches along the direction of pushing the trigger plate 511 into the slot 4, so as to abut the trigger plate 511 against the upper end surface of the control rod 34 by pushing the trigger plate 511 out of the trigger slot 51.

Referring to fig. 3 and 8, a limit bar 523 is fixedly connected to the first control board 521, a limit groove 524 is formed on the inner wall of the control groove 52, and the limit bar 523 and the limit groove 524 extend along the gravity direction, so that the first control board 521 can only slide up and down.

Referring to fig. 3 and 8, a second control board 522 is fixedly connected to the lower end portion of the first control board 521 in the control slot 52, the second control board 522 extends from the control slot 52 into the slot 4, the second control board 522 is located below the first control board 521, the energy storage board 42 slides between the first control board 521 and the second control board 522, when the energy storage board 42 floats, it pushes the first control board 521 upwards, and when the energy storage board 42 sinks, it pushes the second control board 522 to drive the first control board 521 to slide downwards, so that the first control board 521 withdraws from the control inclined plane 512.

Referring to fig. 3 and 8, a stabilizing plane 514 is formed on the trigger plate 511, the stabilizing plane 514 is located on a side wall of the upper end portion of the trigger plate 511 facing the slot 4, the stabilizing plane 514 is located above the control inclined plane 512, the lower end of the stabilizing plane 514 is connected with the upper end of the control inclined plane 512, the energy storage plate 42 pushes the first control plate 521 to slide over the control inclined plane 512 and then enter the stabilizing plane 514, and the stabilizing plane 514 is parallel to the sliding direction of the energy storage plate 42. The first control plate 521 is provided with a plurality of balls 61, and the balls 61 roll on the side wall of the trigger plate 511 facing the slot 4.

Referring to fig. 2 and 3, an elastic member 6 is installed between the oil storage cavity 12 and the float box 21, in this embodiment, the elastic member 6 may be a spring or a hook spring, the elastic member 6 circumferentially surrounds the outer ring of the marker post 2, one end of the elastic member 6 is fixedly connected to the upper end surface of the float box 21, the other end of the elastic member 6 is fixedly connected to the inner wall of the oil storage cavity 12, which is close to the sealing conical surface 23, and the elastic member 6 is used for pushing the float box 21 in a sinking direction.

The implementation principle of the fully-sealed oil-immersed transformer provided by the embodiment of the application is as follows: in the oiling process, the oil liquid level rises, the float box 21 floats upwards through buoyancy, the pressure of the elastic piece 6 is overcome by the buoyancy, meanwhile, the control rod 34 is pulled to be abutted against the trigger plate 511 through the energy storage piece 43, the buoyancy is required to overcome the pulling force of the energy storage piece 43 at the moment, the exposed height of the float box 21 on the oil liquid level is smaller and smaller, when the oil liquid level reaches the threshold value height, the float box 21 floats upwards to drive the energy storage plate 42 to slide upwards, the first control plate 521 is driven to slide upwards to be abutted against the control inclined surface 512, the trigger plate 511 slides towards the depth of the trigger groove 51 through the guide of the control inclined surface 512, the control rod 34 slides into the slot 4 under the pulling force of the energy storage piece 43, the control rod 34 pulls the connecting rod 35, the sealing plate 33 is pushed by the connecting rod 35 to seal the opening of the oil inlet 3, and meanwhile, the flexible sealing ring 24 is abutted against the seal ring 23 to seal the conical surface float box 21.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (5)

1. The utility model provides a totally enclosed oil-immersed transformer, is including being used for filling up oil tank (1) of transformer oil, its characterized in that: the oil tank is characterized in that an oil storage column (11) is arranged on the oil tank (1), an oil storage cavity (12) communicated with the inside of the oil tank (1) is formed in the oil storage column (11), a transparent observation window (13) is formed in the oil storage column (11), a transparent observation plate (14) used for sealing is fixedly arranged in the transparent observation window (13), a marker post (2) is arranged in the oil storage cavity (12) in a floating mode, a float box (21) extending into the oil tank (1) is arranged on the marker post (2), a color block (22) is arranged on the marker post (2), and the height position of the color block (22) in the transparent observation window (13) represents the oil level in the oil tank (1);

a sealing conical surface (23) is formed on the inner wall of the oil storage cavity (12), the sealing conical surface (23) is communicated with the inside of the oil tank (1), the position, close to the inner space of the oil tank (1), of the sealing conical surface (23) is arranged in a flaring mode, a flexible sealing ring (24) is arranged on the float box (21), and the flexible sealing ring (24) is abutted against the sealing conical surface (23) by the float box (21) in a floating mode to seal the opening of the oil storage cavity (12);

the oil tank is characterized in that an oil inlet (3) for oiling is further formed in the oil tank (1), an oil inlet valve (31) is arranged on the oil inlet (3) for oiling, a limiting groove (32) is formed in the inner wall of the oil tank (1), a sealing plate (33) is arranged in the limiting groove (32) in a sliding mode, the sealing plate (33) is used for sealing the opening of the oil inlet (3) in a sliding mode, a control rod (34) is arranged on the inner wall of the limiting groove (32) in a limiting mode, a connecting rod (35) is hinged to the control rod (34), the connecting rod (35) is hinged to the sealing plate (33), and the sealing plate (33) is pushed to seal the opening of the oil inlet (3) when the floating box (21) is in a floating mode.

The novel intelligent oil tank is characterized in that a slot (4) is formed in the inner wall of the oil tank (1), a sliding groove (41) communicated with the slot (4) is formed in the sealing conical surface (23), an energy storage plate (42) sliding in the sliding groove (41) is arranged on the buoy box (21), an energy storage piece (43) is arranged on the energy storage plate (42), the energy storage piece (43) is further arranged on the control rod (34), the slot (4) is used for the energy storage piece (43) and the control rod (34) to slide in, a trigger component (5) is arranged on the inner wall of the slot (4), and the trigger component (5) is used for limiting the control rod (34) to slide into the slot (4);

the trigger assembly comprises a trigger plate (511) arranged in the trigger groove (51) in a sliding mode and a first control plate (521) arranged in the control groove (52) in a sliding mode, wherein the trigger plate (511) is used for extending out of the trigger groove (51) to be abutted on the control rod (34) to limit the control rod (34), the first control plate (521) is used for enabling the energy storage plate (42) to float upwards to be abutted to slide, a control inclined plane (512) is formed on the trigger plate (511), the first control plate (521) is abutted on the control inclined plane (512) in a sliding mode to drive the trigger plate (511) to slide to release the abutting limit of the control rod (34), a reset piece (513) is arranged between the inner wall of the trigger groove (51) and the trigger plate (511), and the reset piece (513) is used for pushing the trigger plate (511) out of the trigger groove (51) to the control rod (34).

The first control board (521) is provided with a second control board (522), the energy storage board (42) slides between the first control board (521) and the second control board (522), the second control board (522) is used for supplying the energy storage board (42) to float down and conflict, so as to drive the first control board (521) to withdraw from on the control inclined plane (512).

2. The hermetically sealed oil immersed transformer of claim 1, wherein: be provided with two at least spacing dishes (25) on the target (2), adjacent spacing dish (25) will look piece (22) are pressed from both sides in the middle, spacing dish (25) border lateral wall with oil storage chamber (12) inner wall laminating is slided in order to spacing target (2) with the direction of floating of cursory box (21).

3. The hermetically sealed oil immersed transformer of claim 1, wherein: an elastic piece (6) is arranged between the oil storage cavity (12) and the float box (21), and the elastic piece (6) is used for pushing the float box (21) in a sinking direction.

4. The hermetically sealed oil immersed transformer of claim 1, wherein: the trigger plate (511) is provided with a stabilizing plane (514), the stabilizing plane (514) is connected with the control inclined plane (512), the energy storage plate (42) pushes the first control plate (521) to slide across the control inclined plane (512) and then enter the stabilizing plane (514), and the stabilizing plane (514) is parallel to the sliding direction of the energy storage plate (42).

5. The hermetically sealed oil immersed transformer of claim 1, wherein: the first control plate (521) is provided with a ball (61) in a rolling manner, and the ball (61) rolls on the side wall of the trigger plate (511).