Dry-type transformer with spliced enclosure

Abstract

The utility model discloses a dry -type transformer of spliced shell relates to dry -type transformer technical field, the utility model discloses a dry -type transformer body still includes the protection mechanism, the protection mechanism sets up at the dry -type transformer body outside, the protection mechanism includes three groups and contains the same dismounting assembly of component, the dismounting assembly installs on the dry -type transformer body, the dismounting assembly includes the rear housing of the sleeve setting at the dry -type transformer body outside, the front housing is provided with in the rear housing front, and the left side and the right side of rear housing all are fixedly connected with the locking block. The utility model discloses through setting up the dismounting assembly, specifically is assembling and places the rear housing and the front housing upside -down staggered, and the predetermined position is completed through the positioning member, and then the eccentric ball head lever is driven and can push the conical head rod extrusion locking ball body clamping T -shaped limit slot, and the whole process does not need to be matched fastening tool, and one person can complete the shell dismounting, and the shell dismounting time -consuming of equipment overhaul is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of dry-type transformer technology, and in particular relates to a dry-type transformer with a spliced ​​shell. Background Technology

[0002] Dry-type transformers, with their advantages of being oil-free, fire-retardant, easy to operate and maintain, energy-saving and environmentally friendly, and highly stable in operation, are widely used in indoor and semi-outdoor power distribution scenarios such as residential communities, commercial complexes, industrial and mining enterprises, rail transit, municipal power distribution, and new energy power plants. They are core and critical equipment in power transmission and distribution systems. The outer shell of the dry-type transformer, as an important supporting protective structure, plays a vital role in isolating external dust, moisture, and foreign objects from intrusion, preventing personnel and animals from accidentally touching live parts, and resisting minor external impacts and environmental erosion. At the same time, it can standardize the equipment's heat dissipation duct and ensure stable operation of the transformer under rated conditions. It is crucial to improving the safety, stability, and service life of the equipment. Its structural rationality, ease of installation, and protective sealing directly determine the overall performance and application adaptability of the dry-type transformer.

[0003] In the daily operation and maintenance of dry-type transformers, the disassembly and locking structure of the split protective shell is a commonly used component. The traditional method of splicing and fixing the shell of dry-type transformers relies entirely on multiple sets of bolts for locking. When the rear shell is connected to the front shell, the mounting holes need to be aligned one by one and the bolts need to be screwed in and tightened. During the assembly stage, the hole positions need to be repeatedly aligned and adjusted. When disassembling, all the bolts need to be unscrewed one by one. The whole operation process is cumbersome and requires the use of wrenches and other supporting tools. Every time the transformer coil and wiring parts are opened for maintenance, the complete bolt disassembly and assembly process must be repeated, which greatly prolongs the on-site operation and maintenance time. Therefore, a dry-type transformer with a spliced ​​shell is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a dry-type transformer with a modular housing. By setting up a disassembly and assembly component, specifically, during assembly, the rear housing and front housing are placed vertically offset, and pre-positioning is achieved through a positioning component. Then, by moving the eccentric ball-head lever, the conical head rod is pushed to compress and lock the ball into the T-shaped limiting groove. No additional fastening tools are required throughout the process, and a single person can complete the disassembly and assembly of the housing. This solves the problem that in the daily operation and maintenance of dry-type transformers, the disassembly and locking structure of the split protective housing is a commonly used component. Traditional dry-type transformer housing splicing and fixing methods rely entirely on multiple sets of bolts for locking. When the rear housing is connected to the front housing, the mounting holes need to be aligned one by one and bolts tightened. During assembly, the hole positions need to be repeatedly adjusted, and during disassembly, all bolts need to be unscrewed sequentially. The entire operation process is cumbersome and requires the use of wrenches and other tools. Every time the transformer coils and wiring parts are opened for maintenance, the entire bolt disassembly and assembly process must be repeated, significantly increasing the time spent on-site maintenance.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a dry-type transformer with a modular housing, comprising a dry-type transformer body and a protective mechanism. The protective mechanism is disposed outside the dry-type transformer body and includes three sets of disassembly and assembly components containing identical parts. These disassembly and assembly components are mounted on the dry-type transformer body. Each disassembly and assembly component includes a rear shell fitted over the dry-type transformer body, a front shell on the front of the rear shell, and locking blocks fixedly connected to the left and right sides of the rear shell. Each of the two locking blocks has a T-shaped limiting groove inside. Support blocks are fixedly connected to the left and right sides of the front shell. Each component is internally fixedly connected with a pin, and the components connected to the two pins are identical. The outer surface of the support block is inserted into the T-shaped limiting groove. A tapered head rod is slidably connected inside the support block. Several locking balls are slidably connected to the bottom of the pin. The outer ring of the locking balls contacts the inner wall of the T-shaped limiting groove. The bottom of the outer ring of the tapered head rod contacts the outer surface of the locking balls. An eccentric ball head lever is connected to the inner side of the top of the pin via a pin shaft. Positioning components are installed on the rear and front shells. When the locking balls are squeezed apart by the bottom end of the tapered head rod, they will not detach from the pin.

[0006] Furthermore, the outer surface of the ball end of the eccentric ball joint contacts the top of the conical head rod, and the inner ring of the pin has an annular groove, with a limit ring slidably connected inside the annular groove.

[0007] Furthermore, the inner ring of the limiting ring is fixedly connected to the outer ring of the conical head rod, and the outer ring of the conical head rod is fitted with a damping spring assembly. The top of the damping spring assembly is fixedly connected to the bottom of the limiting ring, and the bottom of the damping spring assembly is fixedly connected to the bottom of the inner wall of the ring groove.

[0008] Furthermore, the protective mechanism also includes three sets of protective components containing identical parts. The protective components are installed on the disassembly and assembly components. Each protective component includes two protective covers. The bottom front of each of the two protective covers is connected to the front of the support block via pins. A locking frame is fixedly connected to the back of each of the two support blocks. A spring is fixedly connected to the back of each of the two protective covers. The outer surfaces of the two springs are inserted into the inside of the locking frame. An eccentric ball head lever is located inside the protective cover.

[0009] Furthermore, the positioning component includes a first protrusion fixed to both ends of the front of the rear shell, and a second protrusion fixedly connected to both ends of the back of the front shell. The two first protrusions, on opposite sides, respectively contact the corresponding side of the second protrusion. Each of the two first protrusions, on opposite sides, has several L-shaped positioning grooves. Each of the several L-shaped positioning grooves has a positioning slider slidably connected inside. The several positioning sliders are arranged in two sets, and the two sets of positioning sliders are respectively fixed to the corresponding side of the second protrusion.

[0010] This utility model has the following beneficial effects: 1. This utility model sets up a disassembly and assembly component. Specifically, during assembly, the rear shell and the front shell are placed in a staggered position. The positioning component completes the pre-positioning. Then, by moving the eccentric ball head lever, the conical head rod can be pushed to squeeze and lock the ball to clamp the T-shaped limiting groove. No matching fastening tools are required throughout the process. A single person can complete the disassembly and assembly of the shell, reducing the time spent on shell disassembly during equipment maintenance.

[0011] 2. This utility model incorporates a protective component: after the outer shell is locked, the protective cover flips up, causing the rear spring to engage inside the locking frame, completely blocking the eccentric ball joint lever. This prevents external dust and hard objects from contacting the lever and linkage components, reducing corrosion and jamming. When disassembling the outer shell, simply pressing the spring allows the protective cover to be quickly opened without removing additional blocking parts, simplifying the pre-unlocking operation. The protective cover and support block use a pin hinge structure, ensuring smooth opening and closing. Long-term use is less prone to detachment or deformation, extending the service life of the locking structure.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the disassembly and assembly components of this utility model; Figure 3 This is a schematic diagram of the integral structure of the protruding edge of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle; Figure 5 This is a schematic diagram of the overall structure of the support block of this utility model; Figure 6 This is a schematic diagram of the explosion structure of the protective component of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 111. Dry-type transformer body; 2. Protective mechanism; 21. Assembly / disassembly assembly; 211. Rear shell; 212. Front shell; 213. Protruding edge one; 214. Protruding edge two; 215. L-shaped positioning groove; 216. Locking block; 217. T-shaped limiting groove; 218. Positioning slider; 219. Support block; 210. Pin; 2111. Eccentric ball head lever; 2112. Conical head lever; 2113. Locking ball; 2114. Limiting ring; 2115. Damping spring assembly; 2116. Ring groove; 22. Protective assembly; 221. Protective cover; 222. Spring; 223. Locking frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figures 1-6As shown, this utility model is a dry-type transformer with a spliced ​​outer shell, including a dry-type transformer body 111 and a protective mechanism 2. The protective mechanism 2 is disposed outside the dry-type transformer body 111 and includes three sets of disassembly and assembly components 21 containing identical parts. The disassembly and assembly components 21 are installed on the dry-type transformer body 111. The disassembly and assembly components 21 include a rear shell 211 sleeved on the outside of the dry-type transformer body 111, and a front shell 212 provided on the front of the rear shell 211. Locking blocks 216 are fixedly connected to the left and right sides of the rear shell 211. T-shaped limiting grooves 217 are opened inside the two locking blocks 216. Support blocks 219 are fixedly connected to the left and right sides of the front shell 212. Pins 210 are fixedly connected inside the two support blocks 219. The parts connected to the two pins 210 are identical. The outer surface of the support block 219 is inserted into the T-shaped limiting grooves 217. The support block 219 slides inside. A tapered head rod 2112 is attached. Several locking balls 2113 are slidably connected to the bottom of the pin 210. The outer rings of the locking balls 2113 contact the inner wall of the T-shaped limiting groove 217. The bottom of the outer ring of the tapered head rod 2112 contacts the outer surface of the locking balls 2113. An eccentric ball head lever 2111 is connected to the inner side of the top of the pin 210 via a pin. Positioning elements are installed on the rear shell 211 and the front shell 212. When the body 2113 is squeezed away from each other by the bottom end of the conical head rod 2112, it will not detach from the inside of the pin 210. During assembly, the rear shell 211 and the front shell 212 are placed vertically offset and pre-positioned by the positioning component. Then, by moving the eccentric ball head lever 2111, the conical head rod 2112 can be pushed to squeeze and lock the ball 2113 to clamp the T-shaped limiting groove 217. No fastening tools are required throughout the process, and a single person can complete the disassembly and assembly of the shell, reducing the time spent on shell disassembly during equipment maintenance.

[0018] The outer surface of the ball end of the eccentric ball head lever 2111 contacts the top of the tapered head lever 2112. The inner ring of the pin 210 has an annular groove 2116, and a limit ring 2114 is slidably connected inside the annular groove 2116.

[0019] The inner ring of the limiting ring 2114 is fixedly connected to the outer ring of the conical head rod 2112. The outer ring of the conical head rod 2112 is fitted with a damping spring plate assembly 2115. The top of the damping spring plate assembly 2115 is fixedly connected to the bottom of the limiting ring 2114, and the bottom of the damping spring plate assembly 2115 is fixedly connected to the bottom of the inner wall of the ring groove 2116.

[0020] The protective mechanism 2 also includes three sets of protective components 22 containing identical parts. The protective components 22 are mounted on the disassembly assembly 21. Each protective component 22 includes two protective covers 221. The front bottom of each protective cover 221 is connected to the front of a support block 219 via pins. A locking frame 223 is fixedly connected to the back of each support block 219. A spring piece 222 is fixedly connected to the back of each protective cover 221. The outer surface of each spring piece 222 is inserted into the inside of the locking frame 223. An eccentric ball joint lever 2111 is located inside the protective cover 221. After locking, flip the protective cover 221 so that the rear spring piece 222 can be inserted into the locking frame 223, completely blocking the eccentric ball head lever 2111. External dust and hard objects are unlikely to come into contact with the lever and linkage components, reducing corrosion and jamming. When performing shell disassembly and assembly operations, simply press the spring piece 222 to quickly lift the protective cover 221 without removing additional blocking parts, simplifying the pre-unlocking operation. The protective cover 221 and the support block 219 adopt a pin hinge structure, which ensures smooth opening and closing. Long-term use is not prone to falling off or deformation, extending the service life of the locking structure.

[0021] The positioning components include protruding edges 213 fixed to both ends of the front of the rear shell 211, and protruding edges 214 fixedly connected to both ends of the back of the front shell 212. The sides of the two protruding edges 213 that are far apart from each other are in contact with the corresponding sides of the protruding edges 214. Several L-shaped positioning grooves 215 are provided on the sides of the two protruding edges 213 that are far apart from each other. Positioning sliders 218 are slidably connected inside the several L-shaped positioning grooves 215. The several positioning sliders 218 are arranged in two sets, and the two sets of positioning sliders 218 are fixed to the corresponding sides of the protruding edges 214.

[0022] One specific application of this embodiment is as follows: When assembling the splicing shell, the worker first fixes the rear shell 211 to the outside of the dry-type transformer body 111, holds the front shell 212 and places the rear shell 211 and the front shell 212 in a staggered manner, so that the positioning sliders 218 on the two protruding edges 214 on both sides of the front shell 212 are aligned with the transverse slide section of the L-shaped positioning slide groove 215 on the protruding edge 213 of the rear shell 211, and pushes the front shell 212 horizontally, so that the positioning sliders 218 slide horizontally along the transverse slide section of the L-shaped positioning slide groove 215 to the corner position of the slide. After sliding horizontally into place, the front shell 212 is lowered down. The positioning slider 218 slides down along the vertical slide section of the L-shaped positioning slide groove 215. After the vertical section of the slide groove limits the pre-positioning of the front shell 211 and the front shell 212, the first convex edge 213 and the second convex edge 214 are completely in contact, and the sealing strip on the contact surface of the two fills the splicing gap. After the pre-positioning is completed, the support blocks 219 on both sides of the front shell 212, along with the pins 210, are simultaneously inserted into the T-shaped limiting groove 217 of the locking block 216 of the rear shell 211. The eccentric ball head lever 2111 at the top of the support block 219 is pushed down, and the eccentric ball head of the lever pushes down the conical head lever 2112. The conical head lever 2112 slides down along the inner cavity of the pin 210, and the limiting ring 2114 follows and compresses the damping spring assembly 2115. The conical surface at the bottom of the conical head lever 2112 presses against the surrounding locking balls 2113, and the locking balls 2113 push against the inner wall of the T-shaped limiting groove 217 to complete the locking of the front and rear shells. After locking, flip the protective covers 221 on both sides upward and insert the spring piece 222 on the back of the protective cover 221 into the locking frame 223 on the back of the support block 219. The protective cover 221 completely covers the eccentric ball head lever 2111, isolating external dust and impacts. When it is necessary to disassemble the outer casing to inspect the dry-type transformer body 111, press the spring piece 222 on the back of the protective cover 221 inward. The spring piece disengages from the locking frame 223. Lift the protective cover 221 downward and push the eccentric ball head lever 2111 upward to release the downward pressure on the conical head rod 2112. The damping spring piece group 2115 rebounds and pushes the limiting ring 2114 and the conical head rod 2112 to reset upward. The locking ball 2113 loses the conical surface pressure and retracts inward, releasing the tight limit with the inner wall of the T-shaped limiting groove 217. Lift the front shell 212 upwards, causing the positioning slider 218 to slide upwards along the vertical slide section of the L-shaped positioning groove 215 to the corner. Then pull the front shell 212 horizontally, and the positioning slider 218 slides out along the horizontal slide section of the L-shaped positioning groove 215. Simultaneously, the pin 210 is pulled out from the T-shaped limiting groove 217, thus separating the rear shell 211 from the front shell 212, allowing maintenance work to be carried out on the transformer's internal coils and wiring structure.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dry-type transformer with a modular housing, comprising a dry-type transformer body (111), characterized in that, Also includes: The protective mechanism (2) is located outside the dry-type transformer body (111); The protective mechanism (2) includes three sets of disassembly and assembly components (21) containing the same parts, which are mounted on the dry-type transformer body (111); The disassembly and assembly assembly (21) includes a rear shell (211) fitted onto the outside of the dry-type transformer body (111). A front shell (212) is provided on the front of the rear shell (211). Locking blocks (216) are fixedly connected to the left and right sides of the rear shell (211). T-shaped limiting grooves (217) are provided inside the two locking blocks (216). Support blocks (219) are fixedly connected to the left and right sides of the front shell (212). Pins (210) are fixedly connected inside the two support blocks (219). The components connected to the two pins (210) are the same. The outer surface of the support blocks (219) is... The support block (219) is slidably connected to the inside of the T-shaped limiting groove (217), and a tapered head rod (2112) is slidably connected to the inside of the pin (210). Several locking balls (2113) are slidably connected to the bottom inside the pin (210). The outer ring of several locking balls (2113) contacts the inner wall of the T-shaped limiting groove (217). The bottom of the outer ring of the tapered head rod (2112) contacts the outer surface of several locking balls (2113). An eccentric ball head lever (2111) is connected to the inner side of the top of the pin (210) through a pin shaft. Positioning components are installed on the rear shell (211) and the front shell (212). Among them, several locking balls (2113) will not detach from the pin (210) when they are squeezed apart by the bottom end of the conical head rod (2112).

2. A dry-type transformer with a modular housing according to claim 1, characterized in that, The outer surface of the ball end of the eccentric ball-head lever (2111) contacts the top of the conical head lever (2112), and the inner ring of the pin (210) is provided with an annular groove (2116), and a limit ring (2114) is slidably connected inside the annular groove (2116).

3. A dry-type transformer with a modular housing according to claim 2, characterized in that, The inner ring of the limiting ring (2114) is fixedly connected to the outer ring of the conical head rod (2112), and the outer ring of the conical head rod (2112) is fitted with a damping spring plate assembly (2115).

4. A dry-type transformer with a modular housing according to claim 3, characterized in that, The top of the damping spring assembly (2115) is fixedly connected to the bottom of the limiting ring (2114), and the bottom of the damping spring assembly (2115) is fixedly connected to the bottom of the inner wall of the ring groove (2116).

5. A dry-type transformer with a modular housing according to claim 1, characterized in that, The protective mechanism (2) also includes three sets of protective components (22) containing the same parts, the protective components (22) being mounted on the disassembly assembly (21); The protective component (22) includes two protective covers (221). The bottom front of each of the two protective covers (221) is connected to the front of the support block (219) via pins. A locking frame (223) is fixedly connected to the back of each of the two support blocks (219). A spring piece (222) is fixedly connected to the back of each of the two protective covers (221). The outer surface of each spring piece (222) is inserted into the inside of the locking frame (223). Among them, the eccentric ball head lever (2111) is located inside the protective cover (221).

6. A dry-type transformer with a modular housing according to claim 1, characterized in that, The positioning component includes a first protrusion (213) fixed at both ends of the front of the rear shell (211), and a second protrusion (214) fixedly connected at both ends of the back of the front shell (212). The two protrusions (213) are respectively in contact with the corresponding side of the second protrusion (214) on the side away from each other.

7. A dry-type transformer with a modular housing according to claim 6, characterized in that, On the side of each of the two protruding edges (213) that are far apart from each other, there are several L-shaped positioning grooves (215). Each of the several L-shaped positioning grooves (215) is slidably connected to a positioning slider (218). The several positioning sliders (218) are arranged in two sets, and the two sets of positioning sliders (218) are respectively fixed on the corresponding side of the protruding edge (214).

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