Oil-immersed distribution transformer

Abstract

This utility model provides an oil-immersed distribution transformer, including a transformer body. A cover plate is fixedly connected to the upper surface of the transformer body. Two docking cylinders are fixedly connected to both ends of one side of the cover plate. Several abutment grooves are formed on the outer circumference of the docking cylinders. Two oil tank fixing arms are respectively fitted on the outer surface of the two docking cylinders. Two docking grooves are formed at the bottom ends of the two oil tank fixing arms. Tensioning components for abutting and loosening the inner walls of the docking grooves are respectively provided inside the docking cylinders. An oil storage tank is fixedly connected to the end of the two oil tank fixing arms away from the two docking cylinders. An oil inlet is provided above the outer surface of the oil storage tank. Several snap-fit ​​arc plates abut against the inner wall of the snap-fit ​​ring grooves, realizing tool-free disassembly and assembly, greatly shortening the time for single-interface disassembly and assembly, improving efficiency, and avoiding the common problem of difficult disassembly due to rust and scale buildup of threads, thus meeting the needs of rapid oil replenishment and safe operation.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an oil-immersed distribution transformer. Background Technology

[0002] A transformer is a basic piece of equipment for power transmission and distribution, widely used in power systems. There are many types of transformers, among which an oil-immersed transformer is a type of transformer that uses oil as the insulating medium and relies on oil for cooling.

[0003] Existing technologies mostly use threaded connections, which require tightening with a wrench. This traditional design has obvious limitations:

[0004] Tools are required for operation, and disassembly and assembly of a single interface is time-consuming and inefficient; threads are prone to corrosion and scale buildup, making disassembly difficult or even damaging; sealing reliability is greatly affected by tightening force, and problems such as oil leakage or impurities contaminating the insulating oil are likely to occur.

[0005] Especially in outdoor emergency repairs and batch maintenance scenarios, the above-mentioned defects severely restrict maintenance efficiency and make it difficult to meet the needs of rapid oil replenishment and safe operation.

[0006] Therefore, it is necessary to provide a new oil-immersed distribution transformer to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides an oil-immersed distribution transformer.

[0008] This utility model provides an oil-immersed distribution transformer, including a transformer body, a cover plate fixedly connected to the upper surface of the transformer body, two docking cylinders fixedly connected to both ends of one side of the cover plate, several abutment grooves opened on the outer circumference of the docking cylinders, two oil tank fixing arms respectively fitted on the outer surface of the two docking cylinders, two docking grooves opened at the bottom of the two oil tank fixing arms respectively, tensioning components for abutting and loosening the inner wall of the docking grooves are provided inside the docking cylinders, an oil storage tank is fixedly connected to the end of the two oil tank fixing arms away from the two docking cylinders, an oil inlet is provided above the outer surface of the oil storage tank, a snap-fit ​​ring groove is opened on the inner side wall of the oil inlet, a snap-fit ​​cylinder is slidably connected inside the oil inlet, several guide grooves are arranged in a circular array inside the snap-fit ​​cylinder, and a snap-fit ​​component for quick insertion and removal with the oil inlet is provided on the snap-fit ​​cylinder.

[0009] Preferably, the tensioning assembly includes a push-pull assembly, a lead screw motor, a guide screw, a connecting column, and several abutment plates. The lead screw motor is fixedly connected to one side of the inner wall of the docking cylinder, and the connecting column is fixedly connected to the side of the inner wall of the docking cylinder away from the lead screw motor. The output end of the lead screw motor is connected to one end of the guide screw, and the other end of the guide screw is rotatably connected to the connecting column. Several abutment plates are slidably connected between several abutment slots and the inside of the docking cylinder. A push-pull assembly is provided between the guide screw, the connecting column, and the several abutment plates.

[0010] Preferably, the push-pull assembly includes a lead screw slider, a plurality of first transmission lugs, a plurality of first transmission plates, a plurality of second transmission lugs, a plurality of first auxiliary lugs, a plurality of second transmission plates, and a plurality of second auxiliary lugs. The lead screw slider is threadedly connected to the outer surface of the guide lead screw. A plurality of first transmission lugs are arranged in a circular array on the outer surface of the guide lead screw. A plurality of second transmission lugs are respectively fixedly connected to the side of a plurality of abutment plates near the lead screw slider. A plurality of first transmission plates are rotatably connected between the first transmission lugs and the second transmission plates. A plurality of first auxiliary lugs are arranged in a circular array on the outer surface of the connecting post. A plurality of second auxiliary lugs are respectively fixedly connected to the end of a plurality of abutment plates near the connecting post away from the second transmission plates. A plurality of second auxiliary lugs are rotatably connected between the first auxiliary lugs and the second auxiliary lugs. The second transmission plates are symmetrically arranged with the first transmission plates.

[0011] Preferably, the snap-fit ​​assembly includes an expansion and contraction assembly, a gear drive motor, a gear drive shaft, a transmission gear, a guide gear shaft, and a guide gear. The gear drive motor is embedded inside the snap-fit ​​cylinder. The output end of the gear drive motor is connected to one end of the gear drive shaft, and the other end of the gear drive shaft is fixedly connected to the transmission gear. The guide gear shaft is rotatably connected inside the snap-fit ​​cylinder, and one end of the guide gear shaft is fixedly connected to the guide gear. The guide gear meshes with the transmission gear. Several guide arc grooves are arranged circumferentially on the guide gear, and an expansion and contraction assembly is provided between the several guide arc grooves and the several guide through grooves.

[0012] Preferably, the expansion and contraction assembly includes several snap-fit ​​circular blocks, several snap-fit ​​plates, and several snap-fit ​​arc plates. The snap-fit ​​plates are slidably connected inside several guide grooves. One end of each snap-fit ​​plate is provided with several snap-fit ​​circular blocks, which are slidably connected inside several guide arc grooves. The other end of each snap-fit ​​plate extends through to the outside of several guide grooves and is fixedly connected to several snap-fit ​​arc plates. The snap-fit ​​arc plates abut against the inner wall of the snap-fit ​​ring groove.

[0013] Preferably, two bases are fixedly connected to both sides of the bottom end of the transformer body, and a carrying plate is fixedly connected to the upper surface of the snap-fit ​​cylinder.

[0014] Compared with related technologies, the oil-immersed distribution transformer provided by this utility model has the following beneficial effects:

[0015] Several snap-fit ​​arc plates abut against the inner wall of the snap-fit ​​ring groove, achieving tool-free disassembly and assembly, greatly shortening the time spent on single-interface disassembly and assembly, and improving efficiency; at the same time, it avoids the common problem of threads being difficult to disassemble due to rust and scale buildup, meeting the needs of quick lubrication and safe operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of an oil-immersed distribution transformer provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the oil storage tank.

[0018] Figure 3 for Figure 1 The diagram shows the structure of the tensioning assembly.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the snap-fit ​​assembly;

[0020] Figure 5 for Figure 1 The diagram shows the structure of the expansion and contraction components.

[0021] Figure 6 for Figure 1 The diagram shows the structure of the snap-fit ​​arc plate.

[0022] The diagram labels are as follows: 1. Transformer body; 101. Base; 102. Cover plate; 2. Oil tank fixing arm; 201. Connecting groove; 3. Oil storage tank; 301. Oil inlet; 302. Snap-fit ​​ring groove; 4. Connecting cylinder; 401. Abutment through groove; 402. Connecting column; 403. Screw motor; 404. Guide screw; 405. Transmission ear plate one; 406. Transmission plate one; 407. Transmission ear plate two; 408. Auxiliary Ear plate 1; 409, Transmission plate 2; 410, Auxiliary ear plate 2; 411, Lead screw slider; 5, Abutment plate; 6, Snap-fit ​​cylinder; 601, Hand-held plate; 602, Gear drive shaft; 603, Transmission gear; 604, Guide slot; 605, Gear drive motor; 7, Guide gear; 701, Guide gear shaft; 702, Guide arc groove; 8, Snap-fit ​​arc plate; 801, Snap-fit ​​plate; 802, Snap-fit ​​round block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 -,in, Figure 1 A schematic diagram of a preferred embodiment of an oil-immersed distribution transformer provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the oil storage tank. Figure 3 for Figure 1 The diagram shows the structure of the tensioning assembly. Figure 4 for Figure 1 The diagram shows the structure of the snap-fit ​​assembly; Figure 5 for Figure 1 The diagram shows the structure of the expansion and contraction components. Figure 6 for Figure 1The diagram shows the structure of the snap-fit ​​arc plate.

[0025] In the specific implementation process, such as Figure 1-6 As shown, the transformer includes a transformer body 1. A cover plate 102 is fixedly connected to the upper surface of the transformer body 1. Two docking cylinders 4 are fixedly connected to both ends of one side of the cover plate 102. Several abutment grooves 401 are opened on the outer circumference of the docking cylinders 4. Two oil tank fixing arms 2 are respectively fitted on the outer surface of the two docking cylinders 4. Two docking grooves 201 are respectively opened at the bottom of the two oil tank fixing arms 2. Tensioning components for abutting and loosening the inner wall of the docking grooves 201 are respectively provided inside the docking cylinders 4. An oil storage tank 3 is fixedly connected to the end of the two oil tank fixing arms 2 away from the two docking cylinders 4. An oil inlet 301 is provided above the outer surface of the oil storage tank 3. A snap ring groove 302 is opened on the inner side wall of the oil inlet 301. A snap ring 6 is slidably connected inside the oil inlet 301. Several guide grooves 604 are arranged in a circular array inside the snap ring 6. A snap ring component for quick insertion and removal with the oil inlet 301 is provided on the snap ring 6.

[0026] In the specific implementation process, such as Figure 2-3 As shown, the tensioning assembly includes a push-pull assembly, a lead screw motor 403, a guide lead screw 404, a connecting post 402, and several abutment plates 5. The lead screw motor 403 is fixedly connected to one side of the inner wall of the docking cylinder 4. The connecting post 402 is fixedly connected to the side of the inner wall of the docking cylinder 4 away from the lead screw motor 403. The output end of the lead screw motor 403 is connected to one end of the guide lead screw 404, and the other end of the guide lead screw 404 is rotatably connected to the connecting post 402. Several abutment plates 5 are slidably connected between several abutment slots 401 and the inside of the docking cylinder 4. A push-pull assembly is provided between the guide lead screw 404, the connecting post 402, and the several abutment plates 5. The push-pull assembly includes a lead screw slider 411, several transmission ear plates 405, several transmission plates 406, several transmission ear plates 407, several auxiliary ear plates 408, and several transmission plates 408. 9 and several auxiliary ear plates 410, the lead screw slider 411 is threadedly connected to the outer surface of the guide lead screw 404, several transmission ear plates 405 are arranged in a circular array on the outer surface of the guide lead screw 404, several transmission ear plates 407 are respectively fixedly connected to the side of several abutment plates 5 near the lead screw slider 411, several transmission plates 406 are rotatably connected between several transmission ear plates 405 and several transmission ear plates 407, several auxiliary ear plates 408 are arranged in a circular array on the outer surface of the connecting post 402, several auxiliary ear plates 408 are respectively fixedly connected to the end of several abutment plates 5 near the connecting post 402 away from several transmission ear plates 407, several transmission plates 409 are rotatably connected between several auxiliary ear plates 410 and several auxiliary ear plates 408, several transmission plates 409 are symmetrically arranged with several transmission plates 406.

[0027] In the specific implementation process, such as Figure 4-6As shown, the assembly includes an expansion and contraction component, a gear drive motor 605, a gear drive shaft 602, a transmission gear 603, a guide gear shaft 701, and a guide gear 7. The gear drive motor 605 is embedded inside the snap-fit ​​cylinder 6. The output end of the gear drive motor 605 is connected to one end of the gear drive shaft 602, and the other end of the gear drive shaft 602 is fixedly connected to the transmission gear 603. The guide gear shaft 701 is rotatably connected inside the snap-fit ​​cylinder 6, and one end of the guide gear shaft 701 is fixedly connected to the guide gear 7. The guide gear 7 meshes with the transmission gear 603. The guide gear 7 has a circumferential array of several guide arc grooves 702, which are connected to several guide through grooves. An expansion and contraction assembly is provided between 604. The expansion and contraction assembly includes several snap-fit ​​circular blocks 802, several snap-fit ​​plates 801, and several snap-fit ​​arc plates 8. Several snap-fit ​​plates 801 are slidably connected inside several guide slots 604. Several snap-fit ​​circular blocks 802 are provided at one end of several snap-fit ​​plates 801. Several snap-fit ​​circular blocks 802 are slidably connected inside several guide arc grooves 702. The other end of several snap-fit ​​plates 801 extends through to the outside of several guide slots 604 and is fixedly connected to several snap-fit ​​arc plates 8. Several snap-fit ​​arc plates 8 abut against the inner wall of snap-fit ​​ring groove 302. Two bases 101 are fixedly connected to both sides of the bottom end of the transformer body 1. A handle 601 is fixedly connected to the upper surface of the snap-fit ​​cylinder 6.

[0028] When several snap-fit ​​arc plates 8 are brought close together, they form a circular ring plate, the diameter of which is equal to the diameter of the snap-fit ​​cylinder 6.

[0029] The working principle of this utility model is as follows: When oil needs to be added to the oil storage tank through the oil inlet 301, the gear drive motor 605 is started to drive the gear drive shaft 602 to drive the transmission gear 603 to rotate. The transmission gear 603 meshes with and drives the guide gear 7 to rotate. Then, the guide gear 7 guides and drives the several locking round blocks 802 to move closer to each other through several guide arc grooves 702. The several locking round blocks 802 drive the several locking arc plates 801 to disengage from the locking ring grooves 302 and engage with each other. With cylinders 6 overlapping, workers can easily remove the snap-fit ​​cylinder 6 using the carrying plate 601 for oiling. After oiling, the gear drive motor 605 is started in reverse to drive the gear drive shaft 602, which in turn drives the transmission gear 603 to rotate. This reverse operation causes several snap-fit ​​arc plates 8 to abut against the inner wall of the snap-fit ​​ring groove 302, thus achieving tool-free operation, greatly shortening the time required for disassembly and assembly of a single interface and improving efficiency. At the same time, it avoids the common problem of threads being difficult to disassemble due to rust and scale buildup, meeting the needs of rapid oil replenishment and safe operation.

[0030] The start-up screw motor 403 drives the guide screw 404, causing the screw slider 411 to slide away from the connecting post 402. The screw slider 411, through several transmission lugs 405, drives several transmission lugs 406 to rotate closer to the guide screw 404. Then, the several transmission lugs 406, through several transmission lugs 407, drive several abutment plates 5 to retract into the docking cylinder 4 through several abutment slots 401. Subsequently, several auxiliary lugs 408, several transmission plates 409, and several auxiliary lugs 410 simultaneously move the abutment plates 5. The motion assists to move several abutment plates 5 stably and release them from contact with the inner wall of the docking groove 201, making the two oil tank fixing arms 2 detachable for easy transportation. After arriving at the destination, the two oil tank fixing arms 2 are fitted onto the outer surface of the two docking cylinders 4 through the two docking grooves 201. Then, the screw motor 403 is started to drive the guide screw 404 to drive the screw slider 411 to slide towards the side closer to the connecting column 402. The above reverse operation is performed to make several abutment plates 5 contact with the inner wall of the docking groove 201 to achieve fixation, which facilitates the transportation of the transformer body 1.

[0031] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An oil-immersed distribution transformer, characterized in that, The transformer includes a transformer body (1), two docking cylinders (4), two oil tank fixing arms (2), and an oil storage tank (3). A cover plate (102) is fixedly connected to the upper surface of the transformer body (1). Two docking cylinders (4) are fixedly connected to both ends of one side of the cover plate (102). Several abutment grooves (401) are opened on the outer circumference of the docking cylinders (4). Two docking grooves (201) are opened at the bottom of the two oil tank fixing arms (2). The docking cylinders (4) are respectively provided with abutment grooves (201) for contact with the inner wall of the docking grooves (201). The tensioning assembly for contact and release has two oil tank fixing arms (2) fixedly connected to the oil storage tank (3) at one end away from the two docking cylinders (4). An oil inlet (301) is provided above the outer surface of the oil storage tank (3). A snap ring groove (302) is provided on the inner side wall of the oil inlet (301). A snap ring cylinder (6) is slidably connected inside the oil inlet (301). Several guide grooves (604) are arranged in a circular array inside the snap ring cylinder (6). A snap ring assembly for quick insertion and removal with the oil inlet cylinder (301) is provided on the snap ring cylinder (6).

2. The oil-immersed distribution transformer according to claim 1, characterized in that, The tensioning assembly includes a push-pull assembly, a screw motor (403), a guide screw (404), a connecting column (402), and several abutment plates (5). The screw motor (403) is fixedly connected to one side of the inner wall of the docking cylinder (4). The connecting column (402) is fixedly connected to the side of the inner wall of the docking cylinder (4) away from the screw motor (403). The output end of the screw motor (403) is connected to one end of the guide screw (404). The other end of the guide screw (404) is rotatably connected to the connecting column (402). Several abutment plates (5) are slidably connected between several abutment slots (401) and the interior of the docking cylinder (4). A push-pull assembly is provided between the guide screw (404), the connecting column (402), and the several abutment plates (5).

3. The oil-immersed distribution transformer according to claim 2, characterized in that, The push-pull assembly includes a lead screw slider (411), several transmission lugs (405), several transmission plates (406), several transmission lugs (407), several auxiliary lugs (408), several transmission plates (409), and several auxiliary lugs (410). The lead screw slider (411) is threaded onto the outer surface of the guide screw (404). Several transmission lugs (405) are arranged in a circular array on the outer surface of the guide screw (404). Several transmission lugs (407) are fixedly connected to the side of several abutment plates (5) near the lead screw slider (411). A plurality of transmission plates (406) are rotatably connected between ear plate 1 (405) and a plurality of transmission ear plates 2 (407). A plurality of auxiliary ear plates 1 (408) are arranged in a circular array on the outer surface of the connecting column (402). A plurality of auxiliary ear plates 2 (410) are fixedly connected to the end of a plurality of abutment plates (5) near the connecting column (402) away from the plurality of transmission ear plates 2 (407). A plurality of transmission plates 2 (409) are rotatably connected between the plurality of auxiliary ear plates 2 (410) and the plurality of auxiliary ear plates 1 (408). The plurality of transmission plates 2 (409) are symmetrically arranged with the plurality of transmission plates 1 (406).

4. The oil-immersed distribution transformer according to claim 3, characterized in that, The snap-fit ​​assembly includes an expansion and contraction assembly, a gear drive motor (605), a gear drive shaft (602), a transmission gear (603), a guide gear shaft (701), and a guide gear (7). The gear drive motor (605) is embedded inside the snap-fit ​​cylinder (6). The output end of the gear drive motor (605) is connected to one end of the gear drive shaft (602). The other end of the gear drive shaft (602) is fixedly connected to the transmission gear (603). The guide gear shaft (701) is rotatably connected inside the snap-fit ​​cylinder (6). One end of the guide gear shaft (701) is fixedly connected to the guide gear (7). The guide gear (7) meshes with the transmission gear (603). The guide gear (7) has several guide arc grooves (702) arranged in a circular array. An expansion and contraction assembly is provided between the several guide arc grooves (702) and several guide through grooves (604).

5. An oil-immersed distribution transformer according to claim 4, characterized in that, The expansion and contraction assembly includes several snap-fit ​​circular blocks (802), several snap-fit ​​plates (801), and several snap-fit ​​arc plates (8). Several snap-fit ​​plates (801) are slidably connected inside several guide grooves (604). One end of several snap-fit ​​plates (801) is provided with several snap-fit ​​circular blocks (802). Several snap-fit ​​circular blocks (802) are slidably connected inside several guide arc grooves (702). The other end of several snap-fit ​​plates (801) extends through to the outside of several guide grooves (604) and is fixedly connected to several snap-fit ​​arc plates (8). Several snap-fit ​​arc plates (8) abut against the inner wall of the snap-fit ​​ring groove (302).

6. An oil-immersed distribution transformer according to claim 5, characterized in that, Two bases (101) are fixedly connected to the bottom sides of the transformer body (1), and a handle (601) is fixedly connected to the upper surface of the snap-fit ​​cylinder (6).

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