Three-phase dry-type non-excitation voltage-regulating distribution transformer

Abstract

The utility model discloses a three-phase dry-type non-excitation voltage-regulating distribution transformer which comprises a transformer body, front clamping pieces and rear clamping pieces are symmetrically arranged at the top and the bottom of the transformer body, bolts are arranged between the adjacent front clamping pieces and rear clamping pieces in a penetrating mode, hexagon nuts are connected to the outer sides of the bolts in a threaded mode, and C-shaped plates are installed on the inner side walls of the front clamping pieces. Cylinders are symmetrically arranged on the [-shaped plate, limiting holes are formed in the middles of the cylinders in a penetrating mode, rotation stopping blocks are detachably installed in the limiting holes, grooves are evenly formed in the outer ring walls of the rotation stopping blocks in the circumferential direction, and convex teeth matched with the grooves are arranged on the inner side walls of the limiting holes; the bolt can be prevented from rotating through the square part and the square hole, and the hexagon nut can be fixed through the rotation stopping block, the [-shaped plate, the cylinder, the groove and the convex teeth, so that the hexagon nut is prevented from loosening due to vibration, and normal operation of a transformer body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely is a three -phase dry -type no excitation voltage regulation distribution transformer. BACKGROUND

[0002] Three -phase dry -type no excitation voltage regulation distribution transformer is a kind of efficient, reliable power equipment, mainly for transforming voltage, to meet the needs of different electrical equipment to voltage, while ensuring the stable operation of power system, it is widely used in various power systems, provides stable power support for various electrical equipment, three -phase dry -type no excitation voltage regulation distribution transformer is mainly composed of core, winding, fastener, shell and insulating parts and other components.

[0003] The core of existing dry-type transformer is made of silicon steel sheet, under the action of alternating magnetic field, silicon steel sheet generates periodic deformation due to magnetostriction effect, can cause core vibration, vibration can be transmitted to fastener, under long-term vibration, fastener is prone to looseness, affect the electrical performance and mechanical stability of transformer, lead to the normal operation of transformer. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a three -phase dry -type no excitation voltage regulation distribution transformer to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a three -phase dry -type no excitation voltage regulation distribution transformer, including transformer body, the top and bottom of transformer body are symmetrically equipped with front clamp and rear clamp, bolt is equipped between adjacent front clamp and rear clamp, the outer side of bolt is connected with hexagon nut, the inner side wall of front clamp is equipped with the shaped plate, the shaped plate is symmetrically equipped with cylinder, the middle part of cylinder is penetrated and is equipped with limiting hole, the inside of limiting hole is detachably equipped with stop block, the outer ring wall of stop block is evenly opened with recess along the circumference, the inner side wall of limiting hole is equipped with the convex tooth that is matched with recess, the middle part of stop block is opened with the hexagonal groove that is matched with hexagon nut, the side away from the shaped plate of cylinder is equipped with baffle, the fixed hole is opened in front clamp and front clamp, and the fixed hole is equipped with the fixed part for fixing the shaped plate in the inside.

[0006] As a preferred scheme of the utility model, one end of the fixed part is equipped with top cap, the other end of the fixed part is equipped with a plurality of annular equidistant distribution elastic arms.

[0007] As a preferred scheme of the utility model, the diameter of top cap is greater than the fixed hole.

[0008] As one preferred scheme of the utility model, the outside of the bolt is equipped with a square part, the rear clamp is provided with a square hole matched with the square part, and the front clamp is provided with a through hole for the bolt.

[0009] As one preferred scheme of the utility model, the square plate is tightly attached to the inner side wall of the front clamp.

[0010] Compared with the prior art, the utility model has the beneficial effects that: the square part and the square hole can prevent the bolt from rotating, the hexagonal nut can be fixed by the setting of the rotation stopping block, the square plate, the cylinder, the groove and the convex tooth, the hexagonal nut can be prevented from loosening due to vibration, and the normal operation of the transformer body is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0012] Figure 2 It is the utility model Figure 1 It is an enlarged view of A in the utility model;

[0013] Figure 3 It is a structure schematic view of the square plate of the utility model;

[0014] Figure 4 It is a structure schematic view of the rotation stopping block of the utility model;

[0015] Figure 5 It is a structure schematic view of the fixing part of the utility model;

[0016] Figure 6 It is a structure schematic view of the bolt of the utility model;

[0017] Figure 7 It is a structure schematic view of the front clamp and the rear clamp of the utility model.

[0018] In the drawing: 1, transformer body; 2, front clamp; 3, rear clamp; 4, bolt; 5, hexagonal nut; 6, top cover; 7, square plate; 8, cylinder; 9, stop block; 10, rotation stopping block; 11, square part; 12, fixing hole; 13, limiting hole; 14, convex tooth; 15, hexagonal groove; 16, groove; 17, fixing part; 18, elastic arm; 19, square hole; 20, through hole. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made belong to the scope of protection of the present application.

[0020] Please refer to Figures 1 to 7 The utility model provides a technical scheme: a three-phase coherent no -excitation voltage regulation distribution transformer, including transformer body 1, the top and bottom of transformer body 1 are symmetrically equipped with front clamp piece 2 and rear clamp piece 3, the bolt 4 is equipped between adjacent front clamp piece 2 and rear clamp piece 3, the outside of bolt 4 is connected with hexagon nut 5, the inside wall of front clamp piece 2 is installed with the board 7, the board 7 is symmetrically equipped with cylinder 8, the middle part of cylinder 8 is passed through and is equipped with limiting hole 13, the inside of limiting hole 13 is detachably installed with stop block 10, the outer ring wall of stop block 10 is evenly opened with recess 16 along the circumference, the inside wall of limiting hole 13 is equipped with the convex tooth 14 matched with recess 16, because when hexagon nut 5 is tightened, the direction of hexagon nut 5 is not same, if directly sets up hexagonal groove 15 on the board 7, then hexagonal groove 15 is difficult to align with hexagon nut 5, therefore through setting detachable stop block 10, and setting recess 16 on the outside of stop block 10, when fixing, only need to first sleeve stop block 10 on the outside of hexagon nut 5, then aligns recess 16 with convex tooth 14, and the alignment of convex tooth 14 and recess 16 is very convenient, only need to slightly adjust the angle of hexagon nut 5, can make the use more convenient, the middle part of stop block 10 is equipped with the hexagonal groove 15 matched with hexagon nut 5, stop block 10 can limit the rotation of hexagon nut 5 through hexagonal groove 15, and convex tooth 14 and recess 16 can fix stop block 10, thereby fixing hexagon nut 5, prevent hexagon nut 5 from loosening due to vibration, and the side, away from the board 7 of cylinder 8 is equipped with the baffle 9, the baffle 9 is used for blocking stop block 10, prevents stop block 10 from separating with hexagon nut 5, and the fixed hole 12 is equipped on front clamp piece 2 and front clamp piece 2, and the inside of fixed hole 12 is installed with the fixed part 17 for fixing board 7.

[0021] Among them, the one end of fixed part 17 is equipped with top cover 6, the other end of fixed part 17 is equipped with a plurality of annular equidistant distribution elastic arms 18, and the elastic arm 18 is inclined, when the elastic arm 18 passes through the fixed hole 12, the elastic arm 18 will be bounced, and the fixed part 17 will be prevented from separating from the fixed hole 12, even if the fixed part 17 is vibrated, it will not separate from the fixed hole 12.

[0022] Among them, the diameter of top cover 6 is greater than fixed hole 12, so that top cover 6 cannot pass through fixed hole 12.

[0023] Wherein, the outside of the bolt 4 is provided with a square part 11, the rear clamp piece 3 is provided with a square hole 19 matched with the square part 11, the square part 11 matched with the square hole 19 can limit the bolt 4, so that the bolt 4 cannot rotate, and the front clamp piece 2 is provided with a through hole 20 for the bolt 4 to pass through.

[0024] Wherein, the L-shaped plate 7 is close to the inner side wall of the front clamp piece 2, and the close L-shaped plate 7 and the front clamp piece 2 can limit the L-shaped plate 7, so that the L-shaped plate 7 is more firmly installed.

[0025] Specifically, during assembly, the bolt 4 is sequentially inserted through the square hole 19 and the through hole 20, the head of the bolt 4 is close to the rear clamp piece 3, the square part 11 is inserted into the square hole 19, then the hexagonal nut 5 is screwed onto the bolt 4 and tightened, then the hexagonal groove 15 is aligned with the hexagonal nut 5, the stop block 10 is sleeved on the outside of the hexagonal nut 5, then the L-shaped plate 7 is taken, the limiting hole 13 is aligned with the stop block 10, the L-shaped plate 7 is close to the front clamp piece 2, after close, the cylinder 8 is sleeved on the outside of the stop block 10, the fixing hole 12 on the L-shaped plate 7 is aligned with the fixing hole 12 on the front clamp piece 2, and the convex teeth 14 are clamped into the groove 16, then the fixing piece 17 is taken and inserted into the fixing hole 12, when the elastic arm 18 is located in the fixing hole 12, it will be compressed, when the elastic arm 18 completely passes through the fixing hole 12, the elastic arm 18 is opened, thereby preventing the fixing piece 17 from separating from the fixing hole 12, the fixing piece 17 fixes the L-shaped plate 7, at this time, the cylinder 8 prevents the stop block 10 from rotating through the convex teeth 14, and the stop block 10 prevents the hexagonal nut 5 from rotating through the hexagonal groove 15, thereby avoiding the hexagonal nut 5 from loosening due to vibration.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second", "third", "fourth" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, so that the features limited by "first", "second", "third", "fourth" can be explicitly or implicitly included at least one of the features.

[0028] In the utility model, unless another definite provision and limitation, the term "installation", "arrangement", "connection", "fixation", "screw connection" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill of the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0029] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A three-phase dry-type no-load voltage regulating distribution transformer, comprising a transformer body (1), the top and bottom of the transformer body (1) are symmetrically provided with front clamps (2) and rear clamps (3), bolts (4) are arranged between adjacent front clamps (2) and rear clamps (3), and hexagonal nuts (5) are threadedly connected to the outer sides of the bolts (4), characterized in that: The inner side wall of the front clamping piece (2) is provided with a D-shaped plate (7), the D-shaped plate (7) is symmetrically provided with a cylinder (8), the middle part of the cylinder (8) is provided with a limiting hole (13), the inside of the limiting hole (13) is detachably provided with a rotation stopping block (10), the outer ring wall of the rotation stopping block (10) is uniformly provided with a groove (16) in the circumferential direction, the inner side wall of the limiting hole (13) is provided with a convex tooth (14) matched with the groove (16), the middle part of the rotation stopping block (10) is provided with a hexagonal groove (15) matched with the hexagonal nut (5), the side of the cylinder (8) away from the D-shaped plate (7) is provided with a stop block (9), the front clamping piece (2) and the front clamping piece (2) are both provided with a fixing hole (12), the inside of the fixing hole (12) is provided with a fixing piece (17) for fixing the D-shaped plate (7).

2. A three-phase, non-excitation regulation distribution transformer of the dry-type, according to claim 1, characterized in that: One end of the fixing piece (17) is provided with a top cover (6), the other end of the fixing piece (17) is provided with a plurality of elastic arms (18) distributed in a ring shape at equal intervals.

3. A three-phase, non-excitation regulation distribution transformer of claim 2, characterized in that: The diameter of the top cover (6) is greater than that of the fixing hole (12).

4. A three-phase non-excitation regulation distribution transformer of the dry-type according to claim 1, characterized in that: The outer side of the bolt (4) is provided with a square part (11), the rear clamping piece (3) is provided with a square hole (19) matched with the square part (11), and the front clamping piece (2) is provided with a through hole (20) for the bolt (4) to pass through.

5. A three-phase non-excitation regulation distribution transformer of the dry-type according to claim 1, characterized in that: The D-shaped plate (7) is tightly attached to the inner side wall of the front clamping piece (2).

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