Insulation structure of distribution transformer

Abstract

The invention discloses a distribution transformer insulation structure which comprises a transformer box body, a fixed bottom plate is fixedly installed at the bottom of the interior of the transformer box body, lifting assemblies are arranged on the two sides of the top of the fixed bottom plate, lifting plates are arranged at the movable ends of the lifting assemblies, windings are arranged on the tops of the lifting plates, and the windings are arranged on the movable ends of the lifting assemblies. A clamping assembly is arranged at the top of the fixed bottom plate, the lifting assembly comprises lifting supports fixedly installed on the two sides of the top of the fixed bottom plate, buffer supports located in the lifting supports are fixedly installed at the top of the fixed bottom plate, and threaded rods are rotationally connected to the middles of the tops of the lifting supports; the threaded rod is connected with a lifting block located above the buffering support in a penetrating and threaded mode. According to the distribution transformer insulation structure, the lifting chain drives the lifting frame to move upwards, the winding installed on the lifting plate is lifted to the top of the transformer box body, and maintenance personnel can conveniently maintain components in the transformer box body.

Description

Technical Field

[0001] This invention relates to the field of power distribution transformer technology, specifically to an insulation structure for a power distribution transformer. Background Technology

[0002] A distribution transformer, or simply "distribution transformer," is a static electrical device in a power distribution system that transmits alternating current (AC) by transforming AC voltage and current according to the law of electromagnetic induction. In some regions, power transformers with voltage levels below 35 kV (mostly 10 kV and below) are called "distribution transformers," or simply "distribution transformers." The location where a distribution transformer is installed is called a substation. A distribution power transformer is a device used to transform an AC voltage (current) of a certain value into another voltage (current) of different values ​​at the same frequency. When AC current is applied to the primary winding, an alternating magnetic flux is generated. This alternating magnetic flux, through the magnetic conduction of the iron core, induces an alternating electromotive force (EMF) in the secondary winding. The magnitude of the secondary induced EMF is related to the number of turns in both the primary and secondary windings; that is, the voltage is directly proportional to the number of turns.

[0003] Existing transformers typically place the windings inside the enclosure and fix them in place with bolts or other means. This makes emergency repairs time-consuming and labor-intensive, and the problems cannot be resolved in a timely manner, causing great inconvenience to people's lives. Summary of the Invention

[0004] To address the deficiencies in existing technologies, this invention provides an insulation structure for a distribution transformer, including a transformer housing. A fixed base plate is fixedly installed at the bottom of the transformer housing. Lifting assemblies are provided on both sides of the top of the fixed base plate. A lifting plate is provided at the movable end of the lifting assembly. A winding is provided on the top of the lifting plate. A clamping assembly is provided on the top of the fixed base plate. The lifting assembly includes lifting brackets fixedly installed on both sides of the top of the fixed base plate. A buffer bracket located inside the lifting brackets is fixedly installed on the top of the fixed base plate. A threaded rod is rotatably connected to the middle of the top of the lifting brackets. The threaded rod is threadedly connected to a lifting block located above the buffer bracket. Lifting sprockets are provided on both sides of the lifting block. A lifting chain is meshed and driven at the top of the lifting sprockets. A lifting frame is fixedly installed at one end of the lifting chain. The lifting plate is located between the two lifting frames.

[0005] Preferably, the threaded rod is rotatably connected to the top of the buffer bracket, the bottom of the threaded rod is rotatably connected to the bottom of the buffer bracket, the portion of the threaded rod above the buffer bracket is threaded, a buffer pad is fixedly installed on the top of the buffer bracket, the threaded rod is rotatably connected to the middle of the buffer pad, and the lifting block is located above the buffer pad.

[0006] Preferably, the top of the threaded rod is fixedly installed with an adjustment slot located above the lifting bracket, the two sides of the lifting block are integrally provided with connecting rods, the end of the connecting rod is rotatably connected to a lifting sprocket, one end of the lifting chain is fixedly installed with the top of the fixed base plate, and the middle part of the lifting chain is connected to the top of the lifting sprocket for transmission.

[0007] Preferably, guide rails are fixedly installed on the opposite faces of the two lifting brackets, one side of the lifting frame is slidably connected to the guide rails, the guide rails are symmetrically installed on both sides of the lifting brackets, and sliders that are slidably connected to the guide rails are fixedly installed at both ends of one side of the lifting frame. Connecting crossbars are fixedly installed on the opposite faces of the two lifting frames, and the two ends of the connecting crossbars are respectively fixedly installed to the two lifting frames. The bottom of the lifting plate is fixedly installed to the top of the connecting crossbars.

[0008] Preferably, a synchronous sprocket is fixedly installed at the bottom of the threaded rod inside the lifting bracket. The two synchronous sprockets are connected by a synchronous chain drive. The synchronous chain is located below the lifting frame. After opening the cover on the top of the transformer tank, a wrench is inserted into the adjustment slot to drive the threaded rod to rotate. At the same time, the synchronous sprocket and the synchronous chain drive the other threaded rod to rotate, causing the lifting block to move upward. This causes the lifting sprocket to rise, which in turn causes the lifting chain to drive the lifting frame to move upward along the guide rail, lifting the windings installed on the lifting plate to the top of the transformer tank, making it convenient for maintenance personnel to repair the components inside the transformer tank.

[0009] Preferably, the top of the adjustment slot is provided with a hexagonal groove, both ends of the connecting rod are fixedly installed with protective covers that wrap around the lifting sprocket, and the clamping assembly is located below the connecting crossbar.

[0010] Preferably, the clamping assembly includes a rotating seat fixedly installed on the top of the fixed base plate, a rotating rod rotatably connected to the top of the rotating seat, deflection frames fixedly installed at both ends of the rotating rod, a clamping rod rotatably connected to the top of the deflection frame, and a clamping groove provided at the bottom of the connecting crossbar.

[0011] Preferably, a tension spring is provided between the two opposing deflection frames, and a horizontal plate is provided in the middle of the deflection frame. The two ends of the tension spring are fixedly installed to the middle of the horizontal plate. The width of the clamping groove is the same as the diameter of the clamping rod. After the winding is repaired, the threaded rod is rotated in the opposite direction, so that the winding descends into the transformer tank with the lifting plate. The bottom of the connecting horizontal bar contacts the clamping rod and pushes the deflection frame to deflect. At the same time, the clamping rod moves into the clamping groove and engages with the inside of the clamping groove to prevent the connecting horizontal bar, the lifting plate and the winding from shaking during operation.

[0012] Preferably, the rotating seat is provided with limit grooves on both the front and rear sides, and the outer circumference of the rotating rod is integrally connected with limit blocks located on both sides of the rotating seat. The deflection angle of the limit blocks is less than 90 degrees. When the lifting plate is lifted, after the clamping rod slides out of the clamping groove, under the action of the tension spring, the deflection frame drives the clamping rod to move closer to the center. At the same time, the deflection angle of the deflection frame is limited by the limit blocks and the limit grooves, so that the angle between the deflection frame and the fixed base plate is less than 90 degrees, which makes it convenient for the deflection frame to deflect into the clamping groove after the lifting plate is lowered.

[0013] Preferably, the winding is fixedly installed to the lifting plate by an insulating block, and an insulating gasket is provided at the bottom of the lifting plate.

[0014] The beneficial effects of this invention are reflected in:

[0015] 1. This type of distribution transformer insulation structure, by setting up a lifting assembly, when the transformer is damaged internally, opens the cover on the top of the transformer tank, inserts a wrench into the adjustment slot, and drives the threaded rod to rotate. At the same time, the synchronous sprocket and synchronous chain drive another threaded rod to rotate, causing the lifting block to move upward, and driving the lifting sprocket to rise. This causes the lifting chain to drive the lifting frame to move upward along the guide rail, lifting the windings installed on the lifting plate to the top of the transformer tank, making it convenient for maintenance personnel to repair the internal components of the transformer tank.

[0016] 2. This type of distribution transformer insulation structure, by setting a clamping assembly, after the winding is repaired, the threaded rod is rotated in the reverse direction, so that the winding descends into the interior of the transformer tank along with the lifting plate. The bottom of the connecting crossbar contacts the clamping rod and pushes the deflection frame to deflect. At the same time, the clamping rod moves into the clamping groove and engages with the inside of the clamping groove to prevent the connecting crossbar, lifting plate and winding from shaking during operation.

[0017] 3. This type of distribution transformer insulation structure, by setting a limiting block, when the lifting plate is in place, after the clamping rod slides out of the clamping groove, under the action of the tension spring, the deflection frame drives the clamping rod to move closer to the center. At the same time, the deflection angle of the deflection frame is limited by the limiting block and the limiting groove, so that the angle between the deflection frame and the fixed base plate is less than 90 degrees, which makes it convenient for the deflection frame to deflect into the clamping groove after the lifting plate is lowered. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the lifting assembly of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the buffer bracket of the present invention;

[0022] Figure 4 This is a schematic diagram of the threaded rod of the present invention;

[0023] Figure 5 This is a schematic diagram of the synchronous sprocket of the present invention;

[0024] Figure 6 This is a schematic diagram of the clamping assembly of the present invention;

[0025] Figure 7 This is a schematic diagram of the deflection frame of the present invention;

[0026] Figure 8 This is a schematic diagram of the rotating base of the present invention.

[0027] In the diagram: 1. Transformer housing; 2. Fixed base plate; 3. Lifting assembly; 301. Lifting bracket; 302. Buffer bracket; 303. Threaded rod; 304. Adjustment slot; 305. Lifting block; 306. Connecting rod; 307. Lifting sprocket; 308. Lifting chain; 309. Lifting frame; 310. Connecting crossbar; 311. Protective cover; 312. Buffer pad; 313. Synchronous sprocket; 314. Synchronous chain; 315. Guide rail; 4. Lifting plate; 5. Winding; 6. Clamping assembly; 601. Rotating seat; 602. Rotating rod; 603. Deflection frame; 604. Clamping rod; 605. Clamping groove; 606. Tension spring; 607. Limiting groove; 608. Limiting block. Detailed Implementation

[0028] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0030] Please see Figures 1 to 8An insulation structure for a distribution transformer includes a transformer housing 1. A fixed base plate 2 is fixedly installed at the bottom inside the transformer housing 1. Lifting components 3 are provided on both sides of the top of the fixed base plate 2. A lifting plate 4 is provided at the movable end of the lifting components 3. A winding 5 is provided on the top of the lifting plate 4. A clamping component 6 is provided on the top of the fixed base plate 2. The lifting components 3 include lifting brackets 301 fixedly installed on both sides of the top of the fixed base plate 2. A buffer bracket 302 located inside the lifting bracket 301 is fixedly installed on the top of the fixed base plate 2. A threaded rod 303 is rotatably connected to the middle of the top of the lifting bracket 301. A lifting block 305 located above the buffer bracket 302 is threadedly connected to the threaded rod 303. Lifting sprockets 307 are provided on both sides of the lifting block 305. A lifting chain 308 is meshed and driven at the top of the lifting sprockets 307. A lifting frame 309 is fixedly installed at one end of the lifting chain 308. The lifting plate 4 is located between the two lifting frames 309.

[0031] In one embodiment of the present invention, the threaded rod 303 is rotatably connected to the top of the buffer bracket 302, and the bottom of the threaded rod 303 is rotatably connected to the bottom of the buffer bracket 302. The portion of the threaded rod 303 above the buffer bracket 302 is provided with threads. A buffer pad 312 is fixedly installed on the top of the buffer bracket 302. The threaded rod 303 is rotatably connected to the middle of the buffer pad 312, and the lifting block 305 is located above the buffer pad 312.

[0032] In one embodiment of the present invention, an adjustment slot 304 located above the lifting bracket 301 is fixedly installed on the top of the threaded rod 303. Connecting rods 306 are integrally provided on both sides of the lifting block 305. The end of the connecting rod 306 is rotatably connected to the lifting sprocket 307. One end of the lifting chain 308 is fixedly installed on the top of the fixed base plate 2, and the middle part of the lifting chain 308 is connected to the top of the lifting sprocket 307 for transmission.

[0033] In one embodiment of the present invention, guide rails 315 are fixedly installed on the opposite surfaces of two lifting brackets 301. One side of the lifting frame 309 is slidably connected to the guide rails 315. The guide rails 315 are symmetrically installed on both sides of the lifting brackets 301. Slider blocks that are slidably connected to the guide rails 315 are fixedly installed at both ends of one side of the lifting frame 309. Connecting crossbars 310 are fixedly installed on the opposite surfaces of the two lifting frames 309. The two ends of the connecting crossbars 310 are fixedly installed to the two lifting frames 309 respectively. The bottom of the lifting plate 4 is fixedly installed to the top of the connecting crossbars 310.

[0034] In one embodiment of the present invention, a synchronous sprocket 313 is fixedly installed at the bottom of the threaded rod 303 inside the lifting bracket 301. The two synchronous sprockets 313 are connected by a synchronous chain 314, which is located below the lifting frame 309. By setting up the lifting assembly 3, when damage occurs inside the transformer, the cover on the top of the transformer housing 1 is opened, and a wrench is inserted into the adjustment slot 304, thereby driving the threaded rod 303 to rotate. At the same time, the synchronous sprocket 313 and the synchronous chain 314 drive another threaded rod 303 to rotate, causing the lifting block 305 to move upward. This also causes the lifting sprocket 307 to rise, thereby causing the lifting chain 308 to drive the lifting frame 309 to move upward along the guide rail 315, lifting the winding 5 installed on the lifting plate 4 to the top of the transformer housing 1, making it convenient for maintenance personnel to repair the components inside the transformer housing 1.

[0035] In one embodiment of the present invention, the top of the adjustment slot 304 is provided with a hexagonal groove, and the two ends of the connecting rod 306 are fixedly installed with protective covers 311 that wrap around the lifting sprocket 307. The clamping assembly 6 is located below the connecting crossbar 310.

[0036] In one embodiment of the present invention, the clamping assembly 6 includes a rotating seat 601 fixedly installed on the top of the fixed base plate 2. A rotating rod 602 is rotatably connected to the top of the rotating seat 601. A deflection frame 603 is fixedly installed at both ends of the rotating rod 602. A clamping rod 604 is rotatably connected to the top of the deflection frame 603. A clamping groove 605 is provided at the bottom of the connecting crossbar 310.

[0037] In one embodiment of the present invention, a tension spring 606 is provided between two opposing deflection frames 603. A horizontal plate is provided in the middle of the deflection frame 603. The two ends of the tension spring 606 are fixedly installed in the middle of the horizontal plate. The width of the clamping groove 605 is the same as the diameter of the clamping rod 604. By setting the clamping assembly 6, after the winding 5 is repaired, the threaded rod 303 is rotated in the opposite direction, so that the winding 5 descends into the interior of the transformer box 1 along with the lifting plate 4. The bottom of the connecting crossbar 310 contacts the clamping rod 604 and pushes the deflection frame 603 to deflect. At the same time, the clamping rod 604 moves into the clamping groove 605 and engages with the interior of the clamping groove 605 to prevent the connecting crossbar 310, the lifting plate 4 and the winding 5 from shaking during operation.

[0038] In one embodiment of the present invention, limiting grooves 607 are provided on the front and rear sides of the rotating seat 601, and limiting blocks 608 located on both sides of the rotating seat 601 are integrally connected to the outer peripheral surface of the rotating rod 602. The deflection angle of the limiting blocks 608 is less than 90 degrees. By setting the limiting blocks 608, when the lifting plate 4 is on, after the clamping rod 604 slides out of the clamping groove 605, under the action of the tension spring 606, the deflection frame 603 drives the clamping rod 604 to move closer to the center. At the same time, the deflection angle of the deflection frame 603 is limited by the limiting blocks 608 and the limiting grooves 607, so that the angle between the deflection frame 603 and the fixed base plate 2 is less than 90 degrees, so that after the lifting plate 4 is lowered, the deflection frame 603 deflects into the clamping groove 605.

[0039] In one embodiment of the present invention, the winding 5 and the lifting plate 4 are fixedly installed by an insulating block, and an insulating pad is provided at the bottom of the lifting plate 4.

[0040] It should be noted that during use, when internal damage occurs to the transformer, the cover on the top of the transformer housing 1 is opened, and a wrench is inserted into the adjusting slot 304, which drives the threaded rod 303 to rotate. Simultaneously, the synchronous sprocket 313 and synchronous chain 314 drive another threaded rod 303 to rotate, causing the lifting block 305 to move upward. This, in turn, causes the lifting sprocket 307 to rise, which in turn causes the lifting chain 308 to drive the lifting frame 309 to move upward along the guide rail 315, lifting the winding 5 mounted on the lifting plate 4 to the top of the transformer housing 1. This facilitates maintenance personnel to repair the internal components of the transformer housing 1. After the winding 5 has been repaired, the threaded rod 303 is rotated in the opposite direction, causing the winding 5 to descend with the lifting plate 4 into the transformer housing. Inside 1, the bottom of the connecting crossbar 310 contacts the clamping rod 604 and pushes the deflection frame 603 to deflect. At the same time, the clamping rod 604 moves into the clamping groove 605 and engages with the inside of the clamping groove 605 to prevent the connecting crossbar 310, the lifting plate 4, and the winding 5 from shaking during operation. When the lifting plate 4 is on, the clamping rod 604 slides out of the clamping groove 605. Under the action of the tension spring 606, the deflection frame 603 drives the clamping rod 604 to move closer to the center. At the same time, the deflection angle of the deflection frame 603 is limited by the limiting block 608 and the limiting groove 607, so that the angle between the deflection frame 603 and the fixed base plate 2 is less than 90 degrees, so that the deflection frame 603 can deflect into the clamping groove 605 after the lifting plate 4 is lowered.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An insulation structure for a distribution transformer, comprising a transformer housing (1), characterized in that: A fixed base plate (2) is fixedly installed at the bottom inside the transformer housing (1). Lifting components (3) are provided on both sides of the top of the fixed base plate (2). A lifting plate (4) is provided at the movable end of the lifting component (3). A winding (5) is provided on the top of the lifting plate (4). A clamping component (6) is provided on the top of the fixed base plate (2). The lifting component (3) includes a lifting bracket (301) fixedly installed on both sides of the top of the fixed base plate (2). A device located inside the lifting bracket (301) is fixedly installed on the top of the fixed base plate (2). The buffer bracket (302) has a threaded rod (303) rotatably connected to the middle of the top of the lifting bracket (301). The threaded rod (303) is threadedly connected to a lifting block (305) located above the buffer bracket (302). Lifting sprockets (307) are provided on both sides of the lifting block (305). A lifting chain (308) is meshed and driven at the top of the lifting sprockets (307). A lifting frame (309) is fixedly installed at one end of the lifting chain (308). The lifting plate (4) is located between the two lifting frames (309).

2. The insulation structure of a distribution transformer according to claim 1, characterized in that: The threaded rod (303) is rotatably connected to the top of the buffer bracket (302), and the bottom of the threaded rod (303) is rotatably connected to the bottom of the buffer bracket (302). The portion of the threaded rod (303) above the buffer bracket (302) is threaded. A buffer pad (312) is fixedly installed on the top of the buffer bracket (302). The threaded rod (303) is rotatably connected to the middle of the buffer pad (312). The lifting block (305) is located above the buffer pad (312).

3. The insulation structure of a distribution transformer according to claim 1, characterized in that: The top of the threaded rod (303) is fixedly installed with an adjustment slot (304) located above the lifting bracket (301). The two sides of the lifting block (305) are integrally provided with connecting rods (306). The end of the connecting rod (306) is rotatably connected to a lifting sprocket (307). One end of the lifting chain (308) is fixedly installed with the top of the fixed base plate (2). The middle part of the lifting chain (308) is connected to the top of the lifting sprocket (307) for transmission.

4. The insulation structure of a distribution transformer according to claim 3, characterized in that: Guide rails (315) are fixedly installed on the opposite surfaces of the two lifting brackets (301). One side of the lifting frame (309) is slidably connected to the guide rails (315). The guide rails (315) are symmetrically installed on both sides of the lifting brackets (301). Slider blocks that are slidably connected to the guide rails (315) are fixedly installed at both ends of one side of the lifting frame (309). Connecting crossbars (310) are fixedly installed on the opposite surfaces of the two lifting frames (309). The two ends of the connecting crossbars (310) are fixedly installed to the two lifting frames (309) respectively. The bottom of the lifting plate (4) is fixedly installed to the top of the connecting crossbars (310).

5. The insulation structure of a distribution transformer according to claim 4, characterized in that: The bottom of the threaded rod (303) is fixedly installed with a synchronous sprocket (313) located inside the lifting bracket (301). The two synchronous sprockets (313) are connected by a synchronous chain (314), which is located below the lifting frame (309).

6. The insulation structure of a distribution transformer according to claim 4, characterized in that: The top of the adjustment slot (304) is provided with a hexagonal groove, and the two ends of the connecting rod (306) are fixedly installed with protective covers (311) that wrap around the lifting sprocket (307). The clamping assembly (6) is located below the connecting crossbar (310).

7. The insulation structure of a distribution transformer according to claim 6, characterized in that: The clamping assembly (6) includes a rotating seat (601) fixedly installed on the top of the fixed base plate (2). A rotating rod (602) is rotatably connected to the top of the rotating seat (601). A deflection frame (603) is fixedly installed at both ends of the rotating rod (602). A clamping rod (604) is rotatably connected to the top of the deflection frame (603). A clamping groove (605) is provided at the bottom of the connecting crossbar (310).

8. The insulation structure of a distribution transformer according to claim 7, characterized in that: A tension spring (606) is provided between two opposing deflection frames (603). A horizontal plate is provided in the middle of the deflection frame (603). The two ends of the tension spring (606) are fixedly installed in the middle of the horizontal plate. The width of the clamping groove (605) is the same as the diameter of the clamping rod (604).

9. The insulation structure of a distribution transformer according to claim 8, characterized in that: The rotating seat (601) is provided with limiting grooves (607) on the front and rear sides. The outer circumferential surface of the rotating rod (602) is integrally connected with limiting blocks (608) located on both sides of the rotating seat (601). The deflection angle of the limiting blocks (608) is less than ninety degrees.

10. The insulation structure of a distribution transformer according to claim 1, characterized in that: The winding (5) and the lifting plate (4) are fixedly installed by an insulating block, and an insulating pad is provided at the bottom of the lifting plate (4).

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