A box-type transformer

Abstract

The present invention discloses a box-type transformer, which relates to the field of box-type transformers and includes a transformer box body. The top of the transformer box body is equipped with a ventilation box body, a sealing plate, a transmission mechanism, a connecting rod, a sealing block, a movable rod, a push block, a connecting wire rope, and a plastic rod; a sealing mechanism, a first rack, and a stop block. The present invention provides a transmission mechanism and a sealing mechanism. When the transformer box body encounters a fire, the flames generated by the internal transformer fire will burn the plastic block or the connecting wire rope, causing the sealing plate to lose support. The sealing plate will then rotate along the connection with the rotating block, causing the inner cavity of the sealing plate to cover the outside of the fan blades, isolating the transformer box body from the ventilation box body, reducing the ingress of external air, and simultaneously activating a fire extinguishing unit to extinguish the fire. This achieves the purpose of reducing the ingress of external air after a fire and preventing the flame from affecting the external environment through the ventilation outlet.

Description

Technical Field

[0001] The present invention relates to the field of box-type transformers, in particular to a box-type transformer. Background Art

[0002] The box-type transformer concentrates the traditional transformer in a box-type housing. As a complete set of power distribution equipment, the box-type transformer is composed of a transformer, a high-voltage voltage control device, and a low-voltage voltage control device. Its basic principle is to assemble the pressure starting system, armored wire, substation automatic system, DC system and corresponding technical equipment such as fire extinguishing unit in a reasonable order according to the prescribed sequence, and install all components in a specific waterproof, dustproof and rodent-proof fully sealed tempered box structure.

[0003] Existing box-type transformers are generally installed outdoors. To ensure heat dissipation, ventilation holes are generally installed. In the hot summer weather, the power consumption is large, and the transformer is prone to circuit breaker tripping, or even fire in hot weather. After the transformer catches fire, the fire will generally overflow through the ventilation holes above the transformer box and come into contact with the outside air, causing harm to passers-by and nearby greenery. The flames will also affect the ventilation motor inside the ventilation holes, thereby causing a larger fire and greater losses. Therefore, the present invention proposes a box-type transformer. Summary of the Invention

[0004] The purpose of the present invention is to provide a box-type transformer in order to solve the problem that the communication between the internal and external air of the existing transformer will affect the surrounding environment when a fire occurs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a box-type transformer, comprising a transformer box, a ventilation box installed on the top of the transformer box, a sealing plate rotatably connected to the interior of the ventilation box through a rotating rod, a transmission mechanism installed on the outside of the ventilation box and extending to the inside of the ventilation box, the transmission mechanism comprising a connecting rod slidably connected to the inside of the ventilation box and extending to the outside of the ventilation box, one end of the connecting rod is connected to a sealing block, the outer wall of the sealing block is connected to a movable rod extending to the inner wall of one side of the ventilation box, one end of the movable rod is connected to a push block extending to the inside of the ventilation box, the transmission mechanism also comprises a connecting steel wire rope connected to the outer wall of the sealing plate, the bottom end of the connecting steel wire rope is connected to a plastic rod extending to the inside of the transformer box;

[0006] A sealing mechanism is installed on the inner wall of the ventilation box, and the sealing mechanism includes a first rack installed on the outer wall of the connecting rod, and the sealing mechanism also includes a stop block slidably connected to the inner wall of one end of the ventilation box.

[0007] As a further solution of the present invention: fan blades are installed at the connection between the ventilation box and the transformer box through a mounting frame.

[0008] As a further solution of the present invention: the transmission mechanism also includes a driving motor fixedly connected to the top of the connecting rod, the output end of the driving motor is connected to a first spur gear, the outer wall of the first spur gear is engaged with a second spur gear, and the second spur gear is fixedly connected to the top of the fan blade.

[0009] As a further solution of the present invention: the sealing mechanism also includes a third spur gear installed in the inner cavity of one end of the ventilation box body, the outer wall of the third spur gear is engaged with a second rack, and the top end of the second rack is fixedly connected to the bottom end of the block.

[0010] As a further solution of the present invention: the outer wall of the plastic rod is fixedly connected to the top inner wall of the transformer box through an iron connecting frame, and the number of the connecting steel wire ropes is set to two, and the two connecting steel wire ropes are respectively connected to the outer walls of the two sealing plates.

[0011] As a further solution of the present invention: a second sliding groove matching the lateral movement trajectory of the push block is opened on the inner wall of one side of the ventilation box body, and the outer wall of one end of the push block close to the sealing plate is in an arc state.

[0012] As a further solution of the present invention: the inner wall of the ventilation box is provided with a second slide groove that matches the moving trajectory of the outer wall of the connecting rod, the cross-section of the connecting rod is a "convex" structure, and the height of the sealing plate is less than the length of the second slide groove.

[0013] As a further solution of the present invention: the outer wall of the movable rod is in an "L"-shaped structure, the inner wall of the ventilation box is provided with a groove for matching the lateral movement trajectory of the movable rod, and the inner wall of the ventilation box is provided with a cavity matching the outer wall of the first spur gear.

[0014] As a further solution of the present invention: the end of the stop block close to the sealing plate is in an inclined state, and the inner wall of the ventilation box is provided with a groove for matching the moving trajectory of the stop block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By setting up a transmission mechanism and a sealing mechanism, when the transformer box encounters a fire, the flames from the internal transformer will burn through the plastic block or the connecting steel wire rope, causing the sealing plate to lose its support. The sealing plate will then rotate along the connection with the rotating block, causing the inner cavity of the sealing plate to cover the outside of the fan blades, isolating the transformer box from the ventilation box, reducing the entry of external air, and at the same time starting the fire extinguishing unit to extinguish the fire, thereby achieving the purpose of reducing the entry of external air after a fire and preventing the flame from affecting the external environment through the ventilation outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 Schematic diagram of the internal structure of the ventilation box of the present invention

[0019] Figure 3 Schematic diagram of the connection of the connecting wire rope of the present invention

[0020] Figure 4 This is a schematic diagram of the sealing plate of the present invention in a closed state;

[0021] Figure 5 This is a partial enlarged view of point A of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0023] Figure 7 It is a partial enlarged view of point B of the present invention.

[0024] In the figure: 1. Transformer box; 2. Ventilation box; 3. Sealing plate; 4. Fan blade; 5. Transmission mechanism; 501. Connecting wire rope; 502. Sealing block; 503. Connecting rod; 504. First spur gear; 505. Driving motor; 506. Second spur gear; 507. Movable rod; 508. Push block; 509. Plastic rod; 6. Sealing mechanism; 601. First rack; 602. Third spur gear; 603. Second rack; 604. Stop block. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7In an embodiment of the present invention, a box-type transformer includes a transformer box 1, a ventilation box 2 is installed on the top of the transformer box 1, and the interior of the ventilation box 2 is rotatably connected to a sealing plate 3 through a rotating rod, a transmission mechanism 5 installed on the outside of the ventilation box 2 and extending to the interior of the ventilation box 2, the transmission mechanism 5 includes a connecting rod 503 that is slidably connected to the interior of the ventilation box 2 and extends to the outside of the ventilation box 2, one end of the connecting rod 503 is connected to a sealing block 502, the outer wall of the sealing block 502 is connected to a movable rod 507 extending to the inner wall of one side of the ventilation box 2, and one end of the movable rod 507 is connected to a push block 508 extending to the interior of the ventilation box 2, the transmission mechanism 5 also includes a connecting wire rope 501 connected to the outer wall of the sealing plate 3, and the bottom end of the connecting wire rope 501 is connected to a plastic rod 509 extending to the interior of the transformer box 1;

[0027] A sealing mechanism 6 mounted on the inner wall of the ventilation box 2 includes a first rack 601 mounted on the outer wall of the connecting rod 503 and a stop block 604 slidably connected to the inner wall of one end of the ventilation box 2;

[0028] The connection between the ventilation box 2 and the transformer box 1 is provided with a fan blade 4 via a mounting frame.

[0029] In this embodiment: when using this device, when the transformer box body 1 is short-circuited and catches fire due to excessive voltage load, when the flame burns the plastic rod 509, the connecting wire rope 501 will be disconnected from the plastic rod 509, and the plastic rod 509 will no longer give tension to the connecting wire rope 501, so that the sealing plate 3 will also lose tension. Then, under the action of gravity, the sealing plate 3 rotates along the connection with the rotating rod of the ventilation box body 2 until the sealing plate 3 completely covers the air outlet position of the fan blade 4. During this process, the rotation of the sealing plate 3 will contact the push block 508, giving the push block 508 a thrust, so that the push block 508 moves along the first slide groove on the inner wall of the ventilation box body 2, and the movement of the push block 508 will synchronously drive the movable rod 50 7. The sealing block 502, the connecting rod 503 and the first spur gear 504 move laterally until the outer wall of the sealing plate 3 no longer contacts the curved outer wall of the push block 508. Then the push block 508 will stop moving, and the first spur gear 504 will also move to the inner cavity of the ventilation box body 2. At the same time, the first rack 601 fixedly connected to the outer wall of the connecting rod 503 will also enter the interior of the ventilation box body 2. The first rack 601 will contact the transmission parts of the sealing mechanism 6, giving the transmission parts a thrust to rotate, thereby driving the block 604 to move, so that the inclined outer wall of the block 604 contacts the outer wall of the sealing plate 3. The sealing plate 3 will be more tightly connected to the ventilation box body 2 at the inclined surface of the block 604, thereby increasing the sealing degree.

[0030] Please refer to Figure 2-7The transmission mechanism 5 also includes a driving motor 505 fixedly connected to the top of the connecting rod 503, the output end of the driving motor 505 is connected to the first spur gear 504, the outer wall of the first spur gear 504 is meshed with a second spur gear 506, and the second spur gear 506 is fixedly connected to the top of the fan blade 4;

[0031] The sealing mechanism 6 also includes a third spur gear 602 installed in the inner cavity of one end of the ventilation box body 2. The outer wall of the third spur gear 602 is engaged with a second rack 603. The top end of the second rack 603 is fixedly connected to the bottom end of the block 604.

[0032] In this embodiment, when the transformer box 1 is open circuited and catches fire due to excessive voltage load, the flame burns the plastic rod 509. Then, when the connecting wire rope 501 is disconnected from the plastic rod 509, the plastic rod 509 will no longer give tension to the connecting wire rope 501, so that the sealing plate 3 will also lose tension. Then, under the action of gravity, the sealing plate 3 rotates along the connection with the rotating rod of the ventilation box 2 until the sealing plate 3 completely covers the air outlet position of the fan blade 4. In this process, the sealing plate 3 is The rotation will contact the push block 508, giving the push block 508 a thrust, so that the push block 508 moves along the first slide groove on the inner wall of the ventilation box body 2. The movement of the push block 508 will synchronously drive the movable rod 507, the sealing block 502, the connecting rod 503, and the first straight gear 504 to move horizontally until the outer wall of the sealing plate 3 no longer contacts the outer wall of the arc surface of the push block 508. Then the push block 508 will stop moving, and the first straight gear 504 will also move to the inner cavity of the ventilation box body 2. At the same time, the outer wall of the connecting rod 503 The first rack 601, which is fixedly connected, will also enter the interior of the ventilation box 2. The first rack 601 will contact the third spur gear 602, which is a transmission component of the sealing mechanism 6, and give the third spur gear 602 a thrust to rotate. The rotation of the third spur gear 602 will give the second rack 603 a thrust, and the second rack 603 will transmit the thrust to the block 604, thereby driving the block 604 to move, so that the outer wall of the inclined surface of the block 604 contacts the outer wall of the sealing plate 3, and the sealing plate 3 will be in the block. The inclined surface of 604 is more tightly connected to the ventilation box body 2, which increases the sealing degree. It should be noted that the weight of the sealing plate 3 is greater than the push block 508, the movable rod 507, the sealing block 502, the connecting rod 503, the drive motor 505, and the first straight gear 504 pushed by it. The connecting wire rope 501 is located at one end of the transformer box body 1 and is connected to a blocking block with a high melting point. The outer wall of the blocking block is connected to the transformer box body 1 and the ventilation box body 2, and the inner cavity of the hole groove for the connecting rod rope 501 to move is consistent.

[0033] Please refer to Figure 2-7The outer wall of the plastic rod 509 is fixedly connected to the top inner wall of the transformer box 1 through an iron connecting frame. There are two connecting steel wire ropes 501. The two connecting steel wire ropes 501 are respectively connected to the outer walls of the two sealing plates 3. A second slide groove that matches the lateral movement trajectory of the push block 508 is provided on the inner wall of one side of the ventilation box 2. The outer wall of the push block 508 close to the sealing plate 3 is in an arc state. The inner wall of the ventilation box 2 is provided with a second slide groove that matches the outer wall movement trajectory of the connecting rod 503. The cross-section of the connecting rod 503 is a "convex" structure. The height of the sealing plate 3 is less than the length of the second slide groove. The outer wall of the movable rod 507 is an "L"-shaped structure. The inner wall of the ventilation box 2 is provided with a groove for matching the lateral movement trajectory of the movable rod 507. The inner wall of the ventilation box 2 is provided with a cavity that matches the outer wall of the first straight gear 504.

[0034] In this embodiment: through this structure, when the flame burns the plastic rod 509, the connecting wire rope 501 will be disconnected from the plastic rod 509. The plastic rod 509 will no longer give tension to the connecting wire rope 501, so that the sealing plate 3 will also lose tension. Then the sealing plate 3 will rotate along the connection with the rotating rod of the ventilation box 2 under the action of gravity until the sealing plate 3 completely covers the air outlet position of the fan blade 4. During this process, the rotation of the sealing plate 3 will contact the push block 508, giving the push block 508 a thrust, so that the push block 508 moves along the first slide groove of the inner wall of the ventilation box 2. The movement of the push block 508 will synchronously drive the movable rod 507, the sealing block 502, the connecting rod 503, and the first spur gear 504 to move horizontally. When there is no fire, the operation of the first spur gear 504 will drive the drive motor 505 and the second spur gear 506 to rotate. The rotation of the second spur gear 506 will drive the fan blade 4 to rotate, thereby dissipating heat inside the transformer box 1.

[0035] Please refer to Figure 2-7 The end of the stop block 604 close to the sealing plate 3 is in an inclined state, and the inner wall of the ventilation box body 2 is provided with a groove that matches the moving trajectory of the stop block 604.

[0036] In this embodiment: through this structure, when the first rack 601 fixedly connected to the outer wall of the connecting rod 503 enters the interior of the ventilation box body 2, the first rack 601 will contact the third spur gear 602 which serves as a transmission component of the sealing mechanism 6, giving the third spur gear 602 a thrust to rotate. The rotation of the third spur gear 602 will give a thrust to the second rack 603, and the second rack 603 will transmit the thrust to the block 604, thereby driving the block 604 to move, so that the outer wall of the inclined surface of the block 604 contacts the outer wall of the sealing plate 3, and the sealing plate 3 will be more tightly connected to the ventilation box body 2 at the inclined surface of the block 604, thereby increasing the sealing degree.

[0037] Working principle: When the transformer box body 1 is short-circuited and catches fire due to excessive voltage load, the flame will burn the connecting wire rope 501 or the plastic rod 509. When the connecting wire rope 501 or the plastic rod 509 is disconnected, the sealing plate 3 will lose its tension, causing the sealing plate 3 to rotate along the connection with the rotating rod of the ventilation box body 2 under the action of gravity until the sealing plate 3 completely covers the air outlet position of the fan blade 4. During this process, the rotation of the sealing plate 3 will contact the push block 508, giving the push block 508 a thrust, causing the push block 508 to move along the first slide groove on the inner wall of the ventilation box body 2. The movement of the push block 508 will synchronously drive the movable rod 507, the sealing block 502, the connecting rod 503, and the first straight gear 504 to move horizontally until the outer wall of the sealing plate 3 is no longer in contact with the rotating rod. The arc surface outer wall of the push block 508 contacts the push block 508, then the push block 508 will stop moving, and the first spur gear 504 will also move to the inner cavity of the ventilation box body 2. At the same time, the first rack 601 fixedly connected to the outer wall of the connecting rod 503 will also enter the interior of the ventilation box body 2. The first rack 601 will contact the third spur gear 602 which serves as the transmission component of the sealing mechanism 6, giving the third spur gear 602 a thrust to rotate. The rotation of the third spur gear 602 will give a thrust to the second rack 603, and the second rack 603 will transmit the thrust to the block 604, thereby driving the block 604 to move, so that the inclined outer wall of the block 604 contacts the outer wall of the sealing plate 3, and the sealing plate 3 will be more tightly connected to the ventilation box body 2 at the inclined surface of the block 604, thereby increasing the sealing degree.

[0038] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A box-type transformer, comprising a transformer box (1), a ventilation box (2) mounted on the top of the transformer box (1), a sealing plate (3) rotatably connected to the interior of the ventilation box (2) via a rotating rod, characterized in that: A transmission mechanism (5) is installed outside the ventilation box (2) and extends to the inside of the ventilation box (2), the transmission mechanism (5) includes a connecting rod (503) slidably connected to the inside of the ventilation box (2) and extending to the outside of the ventilation box (2), one end of the connecting rod (503) is connected to a sealing block (502), the outer wall of the sealing block (502) is connected to a movable rod (507) extending to the inner wall of one side of the ventilation box (2), one end of the movable rod (507) is connected to a push block (508) extending to the inside of the ventilation box (2), the transmission mechanism (5) also includes a connecting wire rope (501) connected to the outer wall of the sealing plate (3), the bottom end of the connecting wire rope (501) is connected to a plastic rod (509) extending to the inside of the transformer box (1); A sealing mechanism (6) is installed on the inner wall of the ventilation box (2), wherein the sealing mechanism (6) includes a first rack (601) installed on the outer wall of the connecting rod (503), and the sealing mechanism (6) also includes a stop block (604) slidably connected to the inner wall of one end of the ventilation box (2).

2. A box-type transformer according to claim 1, characterized in that: The connection between the ventilation box (2) and the transformer box (1) is provided with a fan blade (4) via a mounting frame.

3. A box-type transformer according to claim 1, characterized in that: The transmission mechanism (5) further comprises a driving motor (505) fixedly connected to the top end of the connecting rod (503); the output end of the driving motor (505) is connected to a first spur gear (504); the outer wall of the driving motor (505) is meshed with a second spur gear (506); and the second spur gear (506) is fixedly connected to the top end of the fan blade (4).

4. A box-type transformer according to claim 1, characterized in that: The sealing mechanism (6) further comprises a third spur gear (602) mounted in the inner cavity of one end of the ventilation box body (2); the outer wall of the third spur gear (602) is meshed with a second rack (603); the top end of the second rack (603) is fixedly connected to the bottom end of the stop block (604).

5. The box-type transformer according to claim 1, characterized in that: The outer wall of the plastic rod (509) is fixedly connected to the top inner wall of the transformer box (1) via an iron connecting frame. The number of the connecting steel wire ropes (501) is two, and the two connecting steel wire ropes (501) are respectively connected to the outer walls of the two sealing plates (3).

6. The box-type transformer according to claim 1, characterized in that: A second sliding groove matching the lateral movement trajectory of the push block (508) is provided on an inner wall of one side of the ventilation box body (2), and an outer wall of one end of the push block (508) close to the sealing plate (3) is in an arc-shaped state.

7. The box-type transformer according to claim 1, characterized in that: The inner wall of the ventilation box (2) is provided with a second sliding groove that matches the movement trajectory of the outer wall of the connecting rod (503); the cross section of the connecting rod (503) is a "convex"-shaped structure; the height of the sealing plate (3) is less than the length of the second sliding groove.

8. The box-type transformer according to claim 3, characterized in that: The outer wall of the movable rod (507) is in an "L"-shaped structure, the inner wall of the ventilation box (2) is provided with a groove for matching the lateral movement trajectory of the movable rod (507), and the inner wall of the ventilation box (2) is provided with a cavity matching the outer wall of the first straight gear (504).

9. The box-type transformer according to claim 1, characterized in that: One end of the stop block (604) close to the sealing plate (3) is in an inclined state, and the inner wall of the ventilation box body (2) is provided with a groove for matching the moving trajectory of the stop block (604).

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