A no-field tap-changing voltage regulating switch assembly for a mining flame-proof dry-type transformer

Abstract

The utility model relates to dry -type transformer technical field, concretely relates to a mining explosion -proof dry -type transformer no excitation tapping voltage regulating switch subassembly, including transformer main part, casing, heat dissipation mechanism, open -close mechanism and tapping post, the casing is fixedly installed on the transformer main part through the sleeve, the tapping post is fixedly installed in the casing, the heat dissipation mechanism is used to the inside heat dissipation of casing, open -close mechanism is used for opening and closing casing, and open -close mechanism includes apron, and apron hinged mounting is in the casing, and open -close mechanism still includes rotating plate, plugboard and limiting mechanism, and rotating plate is rotatably installed on apron through cylinder barrel. The mining explosion -proof dry -type transformer no excitation tapping voltage regulating switch subassembly, through the open -close mechanism that sets, makes the rotary knob, can drive plugboard and move to the apron, thereby can be positioned or remove the apron, thereby conveniently open -close casing and carry out voltage regulation, and further improve the working efficiency of mining explosion -proof dry -type transformer.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, specifically to a non-excitation tap changer assembly for a mine explosion-proof dry-type transformer. Background Technology

[0002] Dry-type transformers are power transformers that use air or other gases as cooling media and do not require liquid insulating oil. They are widely used in scenarios with high requirements for safety and fire resistance. Mining explosion-proof dry-type transformers are explosion-proof dry-type transformers that are used independently without high and low voltage switches. Their explosion-proof shells are usually welded from steel plates, and all joint surfaces of the shell are made according to explosion-proof requirements. They have sufficient mechanical strength and can effectively isolate possible internal arcs, electric sparks and high-temperature gases, preventing them from coming into contact with external flammable and explosive gases and causing an explosion.

[0003] Unlike conventional transformers, the explosion-proof tap changer for mining dry-type transformers is located on the side wall of the explosion-proof housing and has an independent tap position. The tap position and connecting plate are fixedly connected by bolts and washers. When adjusting the voltage, the circuit needs to be disconnected and the connection position between the connecting plate and the tap position needs to be adjusted. In order to ensure the explosion-proof performance, an explosion-proof housing needs to be installed on the outside of the switch for protection.

[0004] Considering the existing non-excitation tap changer assemblies of explosion-proof dry-type transformers used in mines, protective covers are usually installed on the outside to protect the switches from damage caused by dust or impacts. However, since the protective covers are usually sealed with multiple bolts and cover plates, when adjusting the voltage, the existing workers use tools to unscrew multiple bolts to remove the cover plates. Similarly, when installing the cover plates, multiple bolts are unscrewed in reverse order, which makes it inconvenient to install and remove the cover plates and use the switches, resulting in a decrease in the working efficiency of the explosion-proof dry-type transformers used in mines. Utility Model Content

[0005] The purpose of this utility model is to provide a non-excitation tap changer assembly for explosion-proof dry-type transformers used in mining.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A mining explosion-proof dry-type transformer non-excitation tap changer assembly is provided, including a transformer body, a housing, a heat dissipation mechanism, an opening and closing mechanism, and a tap post. The housing is fixedly installed on the transformer body through a sleeve, the tap post is fixedly installed inside the housing, the heat dissipation mechanism is used to dissipate heat from the inside of the housing, and the opening and closing mechanism is used to open and close the housing.

[0008] The opening and closing mechanism includes a cover plate, which is hinged to the housing.

[0009] Furthermore, the opening and closing mechanism also includes a rotating plate, an insert plate, and a limiting mechanism. The rotating plate is rotatably mounted on the cover plate via a cylindrical tube. The insert plate is hinged to the rotating plate via a connecting plate. A sliding groove is provided on the cover plate, and a slot is provided on the housing. The insert plate is slidably connected to the sliding groove via a T-block, and the insert plate is inserted into the slot. The limiting mechanism is used to limit the cylindrical tube.

[0010] Furthermore, the limiting mechanism includes a knob and a circular plate. The knob and the circular plate are connected by a connecting post, and the circular plate and the cylindrical tube are connected by a limiting spring. A through groove is provided on the cylindrical tube, and the circular plate is slidably connected to the through groove. The connecting post is slidably connected to the cylindrical tube.

[0011] Furthermore, the limiting mechanism also includes a cylindrical block and a circular block. The circular block is fixedly installed on the cover plate and has a circular hole. The cylindrical block is fixedly installed on the knob and is inserted into the circular hole.

[0012] Furthermore, the heat dissipation mechanism includes a heat dissipation plate and a frame. The frame is fixedly installed on the housing, and the housing has ventilation openings. The heat dissipation plate is inserted and installed on the frame.

[0013] Furthermore, the heat dissipation mechanism also includes a mounting block, a locking block, and a buckle. The mounting block is fixedly mounted on the heat dissipation plate, the locking block is connected to the mounting block by a spring, and the locking block and the mounting block are slidably connected. The buckle is fixedly mounted on the frame, and the locking block and the buckle are engaged.

[0014] The beneficial effects of this utility model are as follows: The non-excitation tap changer assembly of the explosion-proof dry-type transformer for mining, through the set opening and closing mechanism, allows the rotating knob to drive the plug plate to move, thereby limiting or releasing the cover plate, which facilitates the opening and closing of the shell for voltage adjustment, thereby improving the working efficiency of the explosion-proof dry-type transformer for mining. In addition, the set heat dissipation mechanism can dissipate heat from the inside of the shell, avoiding the high temperature generated after the tap changer has been working for a long time, which would affect the power transmission and the transformer's performance, thereby further improving the performance of the explosion-proof dry-type transformer for mining. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the shell of this utility model;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the opening and closing mechanism and the cover plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the disassembled structure of the limiting mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the main structure of the cover plate of this utility model;

[0022] Figure 7 This is a schematic diagram of the disassembled structure of the heat dissipation mechanism of this utility model;

[0023] Figure 8 For the present utility model Figure 3 Enlarged structural diagram of section A.

[0024] In the diagram: 1. Transformer body; 2. Shell; 3. Bushing; 4. Heat dissipation mechanism; 41. Heat dissipation plate; 42. Frame; 43. Mounting block; 44. Spring; 45. Locking block; 46. Buckle; 47. Ventilation opening; 5. Opening and closing mechanism; 51. Cover plate; 52. Cylindrical tube; 53. Rotating plate; 54. Connecting plate; 55. Insert plate; 56. T-block; 57. Slide groove; 58. Slot; 59. Limiting mechanism; 591. Knob; 592. Circular plate; 593. Through groove; 594. Limiting spring; 595. Cylindrical block; 596. Connecting post; 597. Circular ring block; 598. Circular hole; 6. Tap joint post. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] Reference Figures 1 to 3The diagram shows a mine-use explosion-proof dry-type transformer tap changer assembly, comprising a transformer body 1, a housing 2, a heat dissipation mechanism 4, an opening / closing mechanism 5, and tap posts 6. The housing 2 is fixedly installed on the transformer body 1 via a sleeve 3, and serves to protect the tap posts 6. The tap posts 6 are fixedly installed inside the housing 2, and there are six sets of tap posts 6. Different tap posts 6 are connected by connecting plates. The voltage regulation function is achieved by changing the connection position of the connecting plates. The heat dissipation mechanism 4 is used to dissipate heat from the inside of the housing 2. The opening / closing mechanism 5 is used to open and close the housing 2, thereby facilitating the adjustment of the connecting plate positions. The opening / closing mechanism 5 includes a cover plate 51, which is hinged to the housing 2. The hinged effect of the cover plate 51 allows it to flip, thereby opening and closing the housing 2.

[0028] Reference Figure 4 and Figure 5 The opening and closing mechanism 5 also includes a rotating plate 53, an insert plate 55, and a limiting mechanism 59. The rotating plate 53 is rotatably mounted on the cover plate 51 via a cylindrical tube 52. The rotation of the cylindrical tube 52 drives the rotating plate 53 to rotate. The insert plate 55 is hinged to the rotating plate 53 via a connecting plate 54. The rotation of the rotating plate 53 drives the connecting plate 54 to move, thereby driving the insert plate 55 to move, allowing the insert plate 55 to be inserted into or released from the slot 58. The cover plate 51 has openings... The slide 57 has a slot 58 on the housing 2. The insert plate 55 is slidably connected to the slide 57 via the T-block 56 and is inserted into the slot 58. The sliding effect of the T-block 56 and the slide 57 guides the insert plate 55 and prevents it from shifting when moving. The insertion effect of the insert plate 55 and the slot 58 limits the cover plate 51 and keeps it fixed. The limiting mechanism 59 limits the cylindrical tube 52, thereby keeping the rotating plate 53 fixed.

[0029] Reference Figure 5 and Figure 6The limiting mechanism 59 includes a knob 591 and a circular plate 592. The knob 591 and the circular plate 592 are connected by a connecting post 596, and the circular plate 592 and the cylindrical tube 52 are connected by a limiting spring 594. Through the elastic force of the limiting spring 594, the circular plate 592, without the action of external force, always drives the connecting post 596 and the knob 591 to move towards the rotating plate 53. The cylindrical tube 52 is provided with a through groove 593, and the circular plate 592 is slidably connected to the through groove 593. Through the sliding effect of the circular plate 592 and the through groove 593, the circular plate 592 is limited, so that when the circular plate 592 rotates, it can drive the cylindrical tube 52 to rotate. The connecting post 596 is slidably connected to the cylindrical tube 52. The limiting mechanism 59 also includes a cylindrical block 595 and an annular block 597. The annular block 597 is fixedly installed on the cover plate 51, and a circular hole 598 is provided on the annular block 597. The annular block 597 has two circular holes 598. By inserting the cylindrical block 595 into the circular holes 598 at different positions, the knob 591 is limited, so that the circular plate 592 and the cylindrical tube 52 remain fixed. The cylindrical block 595 is fixedly installed on the knob 591, and the cylindrical block 595 is inserted into the circular hole 598. By moving the knob 591, the cylindrical block 595 can be inserted into or released from the circular hole 598. By rotating the knob 591, the connecting column 596 and the circular plate 592 can be rotated.

[0030] Reference Figure 7 and Figure 8 The heat dissipation mechanism 4 includes a heat dissipation plate 41 and a frame 42. The frame 42 is fixedly installed on the housing 2, and the housing 2 is provided with a ventilation port 47. The ventilation port 47 is used to ventilate and dissipate heat inside the housing 2. The heat dissipation plate 41 is inserted and installed on the frame 42. The heat dissipation plate 41 is provided with filter holes. The heat dissipation plate 41 filters the air entering the housing 2 to prevent dust and other impurities from entering the housing 2 and affecting the tap 6 and connecting piece. The heat dissipation mechanism 4 also includes a mounting block 43, a locking block 45, and a latch 46. The mounting block 43 is fixedly mounted on the heat dissipation plate 41. The locking block 45 is connected to the mounting block 43 by a spring 44, and the locking block 45 is slidably connected to the mounting block 43. Through the elastic force of the spring 44, the locking block 45 is always engaged with the latch 46 when no external force is applied. The latch 46 is fixedly mounted on the frame 42. The locking block 45 and the latch 46 engage. Through the engagement effect of the locking block 45 and the latch 46, the mounting block 43 can be limited, so that the heat dissipation plate 41 remains fixed.

[0031] Reference Figures 1 to 8The non-excitation tap changer assembly of this explosion-proof dry-type transformer for mining uses an opening and closing mechanism. Rotating the knob moves the plug plate, which limits or releases the cover plate, facilitating the opening and closing of the casing for voltage adjustment. This improves the working efficiency of the explosion-proof dry-type transformer. In addition, the heat dissipation mechanism cools the inside of the casing, preventing high temperatures from affecting power transmission and transformer performance after prolonged operation, thus further enhancing the performance of the explosion-proof dry-type transformer for mining.

[0032] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A non-excitation tap changer assembly for a mine explosion-proof dry-type transformer, characterized in that, The transformer includes a transformer body (1), a housing (2), a heat dissipation mechanism (4), an opening and closing mechanism (5), and a tap (6). The housing (2) is fixedly installed on the transformer body (1) through a sleeve (3). The tap (6) is fixedly installed inside the housing (2). The heat dissipation mechanism (4) is used to dissipate heat from the inside of the housing (2). The opening and closing mechanism (5) is used to open and close the housing (2). The opening and closing mechanism (5) includes a cover plate (51) which is hinged to the housing (2).

2. The mine-use explosion-proof dry-type transformer de-energized tap changer assembly according to claim 1, characterized in that, The opening and closing mechanism (5) further includes a rotating plate (53), an insert plate (55), and a limiting mechanism (59). The rotating plate (53) is rotatably mounted on the cover plate (51) via a cylindrical tube (52). The insert plate (55) is hinged to the rotating plate (53) via a connecting plate (54). The cover plate (51) has a sliding groove (57). The housing (2) has a slot (58). The insert plate (55) is slidably connected to the sliding groove (57) via a T-block (56), and the insert plate (55) is inserted into the slot (58). The limiting mechanism (59) is used to limit the cylindrical tube (52).

3. The mine-use explosion-proof dry-type transformer de-energized tap changer assembly according to claim 2, characterized in that, The limiting mechanism (59) includes a knob (591) and a circular plate (592). The knob (591) and the circular plate (592) are connected by a connecting post (596), and the circular plate (592) and the cylindrical tube (52) are connected by a limiting spring (594). A through groove (593) is provided on the cylindrical tube (52). The circular plate (592) is slidably connected to the through groove (593), and the connecting post (596) is slidably connected to the cylindrical tube (52).

4. The non-excitation tap changer assembly for a mine explosion-proof dry-type transformer according to claim 3, characterized in that, The limiting mechanism (59) further includes a cylindrical block (595) and an annular block (597). The annular block (597) is fixedly installed on the cover plate (51) and has a circular hole (598) on it. The cylindrical block (595) is fixedly installed on the knob (591) and is inserted into the circular hole (598).

5. The mine-use explosion-proof dry-type transformer de-energized tap changer assembly according to claim 1, characterized in that, The heat dissipation mechanism (4) includes a heat dissipation plate (41) and a frame (42). The frame (42) is fixedly installed on the housing (2), and the housing (2) has a ventilation opening (47). The heat dissipation plate (41) is inserted and installed on the frame (42).

6. The mine-use explosion-proof dry-type transformer de-energized tap changer assembly according to claim 5, characterized in that, The heat dissipation mechanism (4) further includes a mounting block (43), a locking block (45), and a buckle (46). The mounting block (43) is fixedly mounted on the heat dissipation plate (41). The locking block (45) is connected to the mounting block (43) by a spring (44), and the locking block (45) is slidably connected to the mounting block (43). The buckle (46) is fixedly mounted on the frame (42), and the locking block (45) and the buckle (46) are engaged.

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