An oil-immersed transformer with explosion-proof protection structure

Abstract

The invention discloses an oil-immersed transformer with an explosion-proof protection structure, and relates to the technical field of oil-immersed transformers; in order to protect the oil-immersed transformer; specifically comprises an oil-immersed transformer body and an exhaust part, wherein the exhaust part comprises: an air outlet pipe: which is plugged and fixed to the inner wall of a through hole opened at the top of the oil-immersed transformer body; an air outlet plate: which is fixed to the top of the air outlet pipe; a sealing seat: which is welded to the outer wall of the bottom of the air outlet pipe; a sealing cylinder: which is welded to the outer wall of the bottom of the sealing seat; a through hole 1: two through holes 1 are symmetrically opened on the upper and lower surfaces of the sealing cylinder; a circular block: which is movably connected to the inner wall of the circumference of the sealing cylinder. The invention is provided with a piston plate, and when the gas pressure inside the oil-immersed transformer body is too high, the bottom of the piston plate can be pushed by high-pressure gas, so that the circular block can be rotated by using a crank rocker part, so that the through hole and the through hole 1 can be connected, so that the high-pressure gas can be discharged in time.

Description

Technical Field

[0001] The invention relates to the technical field of oil-immersed transformers, and in particular to an oil-immersed transformer with an explosion-proof protection structure. Background Art

[0002] During the use of an oil-immersed transformer, the iron core and winding inside it will generate a large amount of heat. The heat accumulates inside the transformer, causing the transformer to have excessive gas pressure, leading to the risk of explosion, thus affecting the safety of power transmission. Therefore, it is necessary to design an oil-immersed transformer so that when the gas pressure inside the transformer is too high, relevant mechanisms can be used to quickly discharge the high-pressure gas, thereby ensuring the safe use of the transformer.

[0003] After searching, the Chinese patent application number CN202120884272.8 discloses an oil-immersed transformer with explosion-proof function, which specifically relates to the technical field of transformer equipment, including a transformer body, the upper surface of the transformer body is fixedly connected with a pressure relief box, and the left and right side surfaces of the transformer body are fixedly connected with a refueling box, and the two refueling boxes are internally provided with a refueling mechanism, and the refueling mechanism includes a fixed block, and the top of the inner wall of the fixed block is fixedly connected to a No. 1 spring, and the other end of the No. 1 spring is fixedly connected to a mounting plate, and the other end of the mounting plate is fixedly connected to a sliding rod, and the surface of the sliding rod is fixedly sleeved with a baffle, and the bottom end of the sliding rod is penetrated through the fixed block and fixedly connected to a pressure plate.

[0004] The oil-immersed transformer with explosion-proof function in the above patent has the following shortcomings: when the blocking block moves to the left side of the No. 3 pressure relief pipe, the gas is quickly discharged through the No. 3 pressure relief pipe, causing the gas pressure in the pressure relief box to decrease sharply, making it impossible for the gas pressure to be sufficient to push the blocking block to move, so that the blocking block is easy to block the No. 3 pressure relief pipe, thereby affecting the exhaust effect. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an oil-immersed transformer with an explosion-proof protection structure.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An oil-immersed transformer with an explosion-proof protection structure comprises an oil-immersed transformer body and an exhaust part, wherein the exhaust part comprises:

[0008] Air outlet pipe: It is plugged and fixed to the inner wall of the through hole opened on the top of the oil-immersed transformer body;

[0009] Air outlet plate: It is fixed on the top of the air outlet pipe;

[0010] Sealing seat: It is welded to the outer wall of the bottom of the outlet pipe;

[0011] Sealing cylinder: It is welded to the outer wall of the bottom of the sealing seat;

[0012] Through hole 1: two through holes 1 are symmetrically opened on the upper and lower surfaces of the sealing cylinder;

[0013] Round block: It is movably connected to the inner wall of the sealing cylinder, and a through hole is opened inside the round block;

[0014] Middle column: It is welded to the outer wall of one side of the circular block;

[0015] One end of the intermediate column is connected to a crank rocker part, and one end of the crank rocker part is connected to a piston part.

[0016] Preferably, the piston portion comprises:

[0017] Bend pipe: It is fixed to the inner wall of one side of the main body of the oil-immersed transformer;

[0018] Pressure cylinder: Its top outer wall is welded to the end of the elbow away from the main body of the oil-immersed transformer;

[0019] Piston plate: It is movably connected to the inner wall of the pressure cylinder, and the outer diameter of the piston plate and the inner diameter of the pressure cylinder are adapted to each other;

[0020] Sliding rod: It is fixed to the outer wall of the top of the piston plate through threads, and the top of the sliding rod is connected to the bottom of the crank rocker part.

[0021] Preferably, the crank rocker portion comprises:

[0022] Rocker: It is fixed to one end of the middle column by a pin;

[0023] Swing arm: It is fixed to the outer wall of one side of the rocker by a pin;

[0024] The U-shaped frame has an inner wall movably connected to an end of the swing arm away from the rocker through a rotating shaft, and the sliding rod is fixed to the outer wall of the bottom of the U-shaped frame through a pin.

[0025] Preferably: a rectangular plate is fixed to the inner wall of one side of the oil-immersed transformer body, a connecting rod is welded to the outer wall of one side of the rectangular plate, and a mounting block is fixed to the outer wall of one side of the connecting rod.

[0026] Preferably, a spring is sleeved on the circumferential outer wall of the slide rod, and two ends of the spring are respectively welded to the bottom outer wall of the mounting block and the top outer wall of the pressure cylinder.

[0027] Preferably: a support plate is fixed to the top outer wall of the oil-immersed transformer body, a storage cylinder is fixed between the two support plates, a conduit is fixed to the bottom of the storage cylinder through a flange, a treatment box is welded to one end of the conduit away from the storage cylinder, and an outlet is opened on the surface of the treatment box.

[0028] Preferably, an arc-shaped rod is welded to an outer wall of one side of the U-shaped frame, and a blocking block is fixed to an outer wall at the top of the arc-shaped rod.

[0029] On the basis of the above scheme: a containing box is welded to the outer wall of the bottom of the processing box, an oil outlet pipe is connected to the outer wall of the bottom of the containing box through threads, and a nozzle is welded to the outer wall of the bottom of the oil outlet pipe.

[0030] Based on the above solution, it is preferred that: the blocking block and the outlet are adapted to each other.

[0031] Based on the above solution, it is further preferred that: the outer wall of the bottom of the pressure cylinder is integrally formed with a curling edge.

[0032] The beneficial effects of the present invention are:

[0033] 1. By providing a piston plate, when the gas pressure inside the main body of the oil-immersed transformer is too high, the bottom of the piston plate can be pushed by high-pressure gas, so that the circular block can be rotated by the crank rocker part, so that the through hole and the through hole 1 can be connected after penetration, so that the high-pressure gas can be discharged in time.

[0034] 2. By providing a pressure cylinder, the maximum upward distance of the piston plate can be limited, thereby limiting the rotation angle of the circular block, thereby ensuring that during the discharge of high-pressure gas, the through hole 1 can remain overlapped with the through hole.

[0035] 3. The spring can ensure that after the high-pressure gas is discharged, the piston plate can be quickly reset, thereby ensuring that the next exhaust process can proceed smoothly.

[0036] 4. By providing a blocking block, the blocking block can be gradually separated from the outlet when the U-shaped frame rises, so that when the high-pressure gas inside the oil-immersed transformer body is depressurized, the transformer oil can be discharged through the outlet, thereby cooling the components inside the oil-immersed transformer body.

[0037] 5. The containing box can receive the transformer oil discharged from the outlet, so that the transformer oil can be introduced into the oil-immersed transformer body through the oil outlet pipe and the nozzle, thereby avoiding splashing of the transformer oil after discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structure of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0039] Figure 2 This is a schematic diagram of the overall structure of an explosion-proof protection assembly of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0040] Figure 3 This is a schematic diagram of the overall structure of an exhaust assembly of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0041] Figure 4 A schematic diagram of the partial structure of an exhaust assembly of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0042] Figure 5 A schematic diagram of the explosion structure of an exhaust assembly of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0043] Figure 6 A schematic diagram of the installation structure of a transformer oil filling assembly of an oil-immersed transformer with an explosion-proof protection structure proposed by the present invention;

[0044] Figure 7 The present invention provides a schematic diagram of the explosion structure of a transformer oil filling assembly of an oil-immersed transformer with an explosion-proof protection structure.

[0045] In the figure: 1-oil immersed transformer body, 2-air outlet plate, 3-support plate, 4-storage cylinder, 5-rocker, 6-sealing cylinder, 7-nozzle, 8-oil outlet pipe, 9-connecting rod, 10-air outlet pipe, 11-swing arm, 12-rectangular plate, 13-bend pipe, 14-sealing seat, 15-U-shaped frame, 16-mounting block, 17-spring, 18-curling edge, 19-pressure cylinder, 20-piston plate, 21-sliding rod, 22-through hole 1, 23-middle column, 24-round block, 25-through hole, 26-conduit, 27-processing box, 28-holding box, 29-arc rod, 30-export, 31-blocking block. DETAILED DESCRIPTION

[0046] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0049] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0050] Embodiment 1:

[0051] An oil-immersed transformer with explosion-proof protection structure, such as Figure 1-5 As shown, it includes an oil-immersed transformer body 1 and an exhaust part, and the exhaust part includes:

[0052] The air outlet pipe 10 is plugged and fixed to the inner wall of the through hole opened at the top of the oil-immersed transformer body 1;

[0053] Gas outlet plate 2: It is fixed to the top of the gas outlet pipe 10 by bolts;

[0054] Sealing seat 14: welded to the outer wall of the bottom of the outlet pipe 10;

[0055] Sealing cylinder 6: It is welded to the outer wall of the bottom of the sealing seat 14;

[0056] Through hole 1 22: Two through holes 1 22 are symmetrically opened on the upper and lower surfaces of the sealing cylinder 6;

[0057] The circular block 24 is rotatably connected to the inner wall of the sealing cylinder 6, and a through hole 25 is provided inside the circular block 24;

[0058] The middle column 23 is welded to the outer wall of one side of the circular block 24;

[0059] One end of the intermediate column 23 is connected to a crank rocker portion, and one end of the crank rocker portion is connected to a piston portion;

[0060] By providing a piston part, when the gas pressure inside the oil-immersed transformer body 1 is too high, the piston part can be pushed, so that the piston part can operate the crank rocker part through the linkage effect, so that the crank rocker part can drive the intermediate column 23 to rotate, so that the intermediate column 23 can drive the circular block 24 to rotate along the circumferential inner wall of the sealing cylinder 6, so that the through hole 25 can overlap with the two through holes 1 22 after rotation to form a through hole, so that the high-pressure gas inside the oil-immersed transformer body 1 can be discharged from the outlet pipe 10 through the through hole 1 22 and the through hole 25, so that when the pressure inside the oil-immersed transformer body 1 is too high, the gas can be discharged promptly and quickly, thereby ensuring the safety of the oil-immersed transformer body 1 and avoiding its explosion.

[0061] The piston portion comprises:

[0062] Bend pipe 13: fixed to the inner wall of one side of the oil-immersed transformer body 1 by bolts;

[0063] Pressure cylinder 19: Its top outer wall is welded to the end of the elbow 13 away from the oil-immersed transformer body 1;

[0064] The piston plate 20 is slidably connected to the inner wall of the pressure cylinder 19, and the outer diameter of the piston plate 20 and the inner diameter of the pressure cylinder 19 are adapted to each other;

[0065] Sliding rod 21: It is fixed to the top outer wall of piston plate 20 by thread, and the top of sliding rod 21 is connected to the bottom of crank rocker part;

[0066] By providing a piston plate 20, the pressure of the high-pressure gas can be made to move upward along the circumferential inner wall of the pressure cylinder 19, so that the slide rod 21 can drive the crank rocker part to move during the upward movement, and the crank rocker part can be used to control the circular block 24 to rotate, thereby realizing the discharge of the high-pressure gas.

[0067] The crank rocker part comprises:

[0068] Rocker 5: It is fixed to one end of the middle column 23 by a pin;

[0069] Swing arm 11: fixed to the outer wall of one side of the rocker 5 by a pin;

[0070] U-shaped frame 15: its inner wall is rotatably connected to the end of the swing arm 11 away from the rocker 5 through a rotating shaft, and the sliding rod 21 is fixed to the outer wall of the bottom of the U-shaped frame 15 through a pin;

[0071] By providing a crank rocker portion, the slide rod 21 can use the swing arm 11 to drive the rocker 5 to drive the circular block 24 to rotate during the upward movement. The pressure cylinder 19 can be used to limit the maximum upward movement distance of the piston plate 20, that is, when the top of the piston plate 20 moves to fit between the inner wall of the top of the pressure cylinder 19, the pressure cylinder 19 is used to limit the movement of the piston plate 20, so that the rotation angle of the rocker 5 is also limited, so as to ensure that during the exhaust process, the through hole 22 can maintain communication with the through hole 25, so as to ensure that the high-pressure gas can be discharged smoothly.

[0072] A rectangular plate 12 is fixed to the inner wall of one side of the oil-immersed transformer body 1 by bolts, a connecting rod 9 is welded to the outer wall of one side of the rectangular plate 12, a mounting block 16 is fixed to the outer wall of one side of the connecting rod 9 by bolts, and a sliding rod 21 is slidably connected to the inner wall of the sliding hole opened on the surface of the mounting block 16, a spring 17 is sleeved on the circumferential outer wall of the sliding rod 21, and two ends of the spring 17 are respectively welded to the bottom outer wall of the mounting block 16 and the top outer wall of the pressure cylinder 19;

[0073] The spring 17 can ensure that after the high-pressure gas is exhausted, the piston plate 20 can be reset under the elastic action of the spring 17, thereby ensuring that the next exhaust process can proceed smoothly.

[0074] The outer wall of the bottom of the pressure cylinder 19 is integrally formed with a curling edge 18;

[0075] The provision of the curling edge 18 can effectively increase the air intake range of the pressure cylinder 19 , thereby increasing the rate at which high-pressure gas is introduced into the pressure cylinder 19 .

[0076] When the present embodiment is in use, when the oil-immersed transformer body 1 generates a large amount of heat due to long-term operation, the heat will cause the gas inside the oil-immersed transformer body 1 to expand, so that the expanded high-pressure gas enters the pressure cylinder 19, and firstly, the high-pressure gas pushes the piston plate 20, so that the slide bar 21 drives the swing arm 11 to swing through the U-shaped frame 15 during the rising process, so that the rocker 5 rotates under the swinging action of the swing arm 11, so that the circular block 24 gradually overlaps with the through hole 25 and the through hole 22 during the synchronous rotation, so that the high-pressure gas can be discharged from the outlet pipe 10 through the through hole 22 and the through hole 25, so that when the pressure inside the oil-immersed transformer body 1 is too high, the high-pressure gas can be depressurized and discharged in time, thereby ensuring the safety of the oil-immersed transformer body 1 during operation.

[0077] Embodiment 2:

[0078] An oil-immersed transformer with explosion-proof protection structure, such as Figure 6-7As shown, in order to use transformer oil to cool down the inside of the oil-immersed transformer body 1; this embodiment makes the following supplements on the basis of embodiment 1: a support plate 3 is fixed to the top outer wall of the oil-immersed transformer body 1 by bolts, a storage cylinder 4 is fixed between the two support plates 3 by bolts, a conduit 26 is fixed to the bottom of the storage cylinder 4 by a flange, and a treatment box 27 is welded to one end of the conduit 26 away from the storage cylinder 4, and an outlet 30 is opened on the surface of the treatment box 27;

[0079] The storage cylinder 4 can be provided to store transformer oil, so that when the temperature inside the oil-immersed transformer body 1 is too high, the transformer oil can be introduced into the oil-immersed transformer body 1 through the conduit 26 and the outlet 30, so that the transformer oil can be used to cool the components in the oil-immersed transformer body 1, thereby ensuring the safety of the oil-immersed transformer body 1 during operation.

[0080] An arc rod 29 is welded to the outer wall of one side of the U-shaped frame 15, and a block 31 is fixed to the outer wall of the top of the arc rod 29 by bolts, and the block 31 and the outlet 30 are adapted to each other;

[0081] By providing the blocking block 31, when the U-shaped frame 15 rises, the blocking block 31 can be gradually separated from the outlet 30, so that when the high-pressure gas inside the oil-immersed transformer body 1 is depressurized, the transformer oil can be discharged through the outlet 30, so that the components inside the oil-immersed transformer body 1 can be cooled.

[0082] A containing box 28 is welded to the bottom outer wall of the processing box 27, an oil outlet pipe 8 is connected to the bottom outer wall of the containing box 28 by threads, and a nozzle 7 is welded to the bottom outer wall of the oil outlet pipe 8;

[0083] The containing box 28 can receive the transformer oil discharged from the outlet 30 , so that the transformer oil can be introduced into the oil-immersed transformer body 1 through the oil outlet pipe 8 and the nozzle 7 , thereby reducing splashing of the transformer oil after discharge.

[0084] When the present embodiment is in use, in the process of discharging the high-pressure gas inside the oil-immersed transformer body 1, the upward movement of the U-shaped frame 15 can be used to control the arc rod 29 to move upward, so that the block 31 is separated from the outlet 30 during the upward movement, so that the transformer oil in the storage cylinder 4 can be introduced into the containing box 28 through the outlet 30, and finally introduced into the oil-immersed transformer body 1 through the oil outlet pipe 8 and the nozzle 7, so that the transformer oil can be used to cool the inside of the oil-immersed transformer body 1.

[0085] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil-immersed transformer with an explosion-proof protection structure, comprising an oil-immersed transformer body (1) and an exhaust part, characterized in that: The exhaust section comprises: An air outlet pipe (10) is plugged and fixed to the inner wall of a through hole opened at the top of the oil-immersed transformer body (1); Air outlet plate (2): fixed to the top of the air outlet pipe (10); Sealing seat (14): welded to the outer wall of the bottom of the air outlet pipe (10); Sealing cylinder (6): welded to the outer wall of the bottom of the sealing seat (14); Through hole one (22): two through holes one (22) are symmetrically provided on the upper and lower surfaces of the sealing cylinder (6); A circular block (24): the circular block (24) is movably connected to the inner wall of the circumference of the sealing cylinder (6), and a through hole (25) is formed inside the circular block (24); The middle column (23) is welded to the outer wall of one side of the circular block (24); One end of the intermediate column (23) is connected to a crank rocker portion, and one end of the crank rocker portion is connected to a piston portion; The piston portion comprises: Bend pipe (13): fixed to the inner wall of one side of the oil-immersed transformer body (1); The pressure cylinder (19) has a top outer wall welded to an end of the elbow (13) away from the oil-immersed transformer body (1); The piston plate (20) is movably connected to the inner wall of the circumference of the pressure cylinder (19), and the outer diameter of the piston plate (20) and the inner diameter of the pressure cylinder (19) are adapted to each other; Sliding rod (21): It is fixed to the top outer wall of the piston plate (20) through threads, and the top of the sliding rod (21) is connected to the bottom of the crank rocker part; The crank rocker portion comprises: Rocker (5): fixed to one end of the middle column (23) by a pin; Swing arm (11): fixed to the outer wall of one side of the rocker (5) by a pin; The U-shaped frame (15) has an inner wall movably connected to an end of the swing arm (11) away from the rocker (5) through a rotating shaft, and the sliding rod (21) is fixed to the outer wall of the bottom of the U-shaped frame (15) through a pin.

2. The oil-immersed transformer with explosion-proof protection structure according to claim 1, characterized in that: A rectangular plate (12) is fixed to the inner wall of one side of the oil-immersed transformer body (1), a connecting rod (9) is welded to the outer wall of one side of the rectangular plate (12), and a mounting block (16) is fixed to the outer wall of one side of the connecting rod (9).

3. The oil-immersed transformer with explosion-proof protection structure according to claim 2, characterized in that: A spring (17) is sleeved on the circumferential outer wall of the sliding rod (21), and two ends of the spring (17) are respectively welded to the bottom outer wall of the mounting block (16) and the top outer wall of the pressure cylinder (19).

4. The oil-immersed transformer with explosion-proof protection structure according to claim 3, characterized in that: A support plate (3) is fixed to the outer wall of the top of the oil-immersed transformer body (1); a storage cylinder (4) is fixed between the two support plates (3); a conduit (26) is fixed to the bottom of the storage cylinder (4) via a flange; a treatment box (27) is welded to one end of the conduit (26) away from the storage cylinder (4); and an outlet (30) is provided on the surface of the treatment box (27).

5. The oil-immersed transformer with explosion-proof protection structure according to claim 4, characterized in that: An arc-shaped rod (29) is welded to an outer wall of one side of the U-shaped frame (15), and a blocking block (31) is fixed to the outer wall of the top of the arc-shaped rod (29).

6. The oil-immersed transformer with explosion-proof protection structure according to claim 5, characterized in that: A containing box (28) is welded to the outer wall of the bottom of the processing box (27), an oil outlet pipe (8) is threadedly connected to the outer wall of the bottom of the containing box (28), and a nozzle (7) is welded to the outer wall of the bottom of the oil outlet pipe (8).

7. The oil-immersed transformer with explosion-proof protection structure according to claim 6, characterized in that: The blocking block (31) and the outlet (30) are adapted to fit each other.

8. The oil-immersed transformer with explosion-proof protection structure according to claim 7, characterized in that: The outer wall of the bottom of the pressure cylinder (19) is integrally formed with a curling edge (18).

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