Limiting device for iron core column of electric reactor

Abstract

The utility model belongs to the field of electric reactors, and relates to an electric reactor iron core column limiting device which comprises an insulating plate and a matched fastening piece, the insulating plate is semicircular, a semicircular arc-shaped groove is formed in the circle center position of the insulating plate, and the insulating plate covers a lower clamping piece limb plate through hole in a lower clamping piece limb plate. The inner diameter of the semi-arc-shaped groove of the insulating plate is matched with the outer diameter of the iron core column, the two sides of the semi-arc-shaped groove are chamfered, a screw hole is formed in the position, corresponding to the through hole of the limb plate of the lower clamping piece, of the insulating plate, and the matched fastening piece comprises a bolt, a first nut, a second nut and a third nut. The bolt penetrates through a lower clamping piece limb plate through hole in the lower clamping piece limb plate and a screw hole in the insulating plate, the first nut and the second nut are arranged on the bolt in a sleeving mode and located on the two sides of the insulating plate, and the third nut is arranged on the bolt in a sleeving mode and located above the lower clamping piece limb plate. According to the utility model, overlarge displacement during installation of the iron core column can be prevented, and the problem of eccentricity caused by slipping after contact between the iron core column and the adhesive is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactors, and in particular relates to a reactor iron core column limiting device. Background Art

[0002] In high-voltage shunt reactors, the reactor core generally adopts an "I"-shaped frame structure, which is mainly composed of an iron yoke, an iron core column, clamps and metal structural parts. The iron yoke is "rectangular" in shape. During the iron yoke stacking stage, the iron core column is not assembled. The upper iron yoke needs to be removed in advance during the body assembly stage to facilitate the installation of the iron core column and the assembly of the coil.

[0003] When installing the core column, the lower surface of the core column and the upper surface of the lower iron yoke need to be firmly bonded by adhesive, and the center of the core column and the center of the lower iron yoke need to be strictly aligned. During the contact between the core column and the upper surface of the lower iron yoke, due to its own inertia, the lower surface of the core column is prone to slipping after contacting the adhesive, causing the core column to shift, and it is impossible to strictly align the center of the core column and the center of the lower iron yoke, which in turn affects the assembly quality of the reactor. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a reactor core column limiting device, and the technical solution adopted by the utility model is as follows:

[0005] The reactor core column limiting device comprises an insulating plate and matching fasteners, wherein the insulating plate is semicircular and has a semicircular arc groove at the center position, the insulating plate covers the lower clamp limb plate through hole on the lower clamp limb plate, the inner diameter of the semicircular arc groove of the insulating plate matches the outer diameter of the core column, the two sides of the semicircular arc groove are chamfered, and a thread hole is formed on the insulating plate at a position corresponding to the lower clamp limb plate through hole, the matching fasteners comprise a bolt and a first nut, a second nut and a third nut, the bolt passes through the lower clamp limb plate through hole on the lower clamp limb plate and the thread hole on the insulating plate, the first nut and the second nut are mounted on the bolt and are located on both sides of the insulating plate, and the third nut is mounted on the bolt and is located above the lower clamp limb plate.

[0006] Preferably, the diameter of the semicircular arc groove of the insulating plate is equal to the diameter of the core column plus 4 mm.

[0007] Preferably, the semicircular arc-shaped groove of the insulating plate has semicircular cutting edges and chamfers.

[0008] Preferably, the insulation board has a thickness of 30-50 mm and is made of laminated wood.

[0009] Beneficial effects of the utility model:

[0010] The reactor core column limiter of the utility model prevents the core column from being displaced too much by effectively limiting and fixing it during the installation process of the core column, and solves the eccentricity problem caused by slipping of the core column after contacting the adhesive. The limiter utilizes the structural characteristics of existing products, has a reasonable design, and is easy to operate. It is universal for different types of reactor products, greatly improves the production and assembly efficiency, and has a high value of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a front view of the core column limiting device of the embodiment of the utility model;

[0013] Figure 2 It is a top view of the core column limiting device of the embodiment of the utility model;

[0014] Figure 3 It is a structural schematic diagram of an insulating plate of an embodiment of the utility model;

[0015] Among them, 1. lower iron yoke, 2. clamp, 3. insulating plate, 4. lower clamp limb plate, 5. core column, 6. bolt, 7. nut, 8. thread hole. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0017] like Figure 1 , 2As shown in Figure 3, a reactor core column limiting device includes an insulating plate 3 and matching fasteners. The insulating plate 3 is a semicircular insulating plate with a semicircular arc groove at the center of the circle. The thickness is selected to be 30-50mm. If the thickness is too small, the strength of the device is insufficient, and if it is too thick, it will cause material waste. The material is laminated wood. The outer diameter of the insulating plate 3 needs to match the position of the lower clamp limb plate 4. The lower clamp limb plate 4 itself has a lower clamp limb plate through hole. It is necessary to ensure that the insulating plate 3 can cover the lower clamp limb plate through hole. The inner diameter of the semicircular groove of the insulating plate 3 matches the outer diameter of the core column 5. In order to prevent the core column 5 from being displaced too much, the diameter of the semicircular groove is generally selected to be equal to the diameter of the core column plus 4mm. 4mm means that 2mm redundancy is left on each side, which can not only ensure that the core column 5 is smoothly inserted into the semicircular groove, but also within the reasonable deviation range, to prevent the redundant size from being too large, resulting in excessive displacement of the core column 5 after assembly; the two sides of the semicircular groove need to be chamfered R80 to facilitate the core column 5 to enter the semicircular groove. If the two sides of the semicircular groove are not chamfered, when the core column 5 is pushed in horizontally, it may not be pushed in, and the edges and corners will also scratch the core column 5. The semicircular cutting edge of the semicircular groove of the insulating plate 3 needs to be chamfered R30 to make the insulating plate 3 more beautiful as a whole. The position corresponding to the through hole of the lower clamp limb plate on the insulating plate 3 is provided with a thread hole 8 of M24 specification, and the matching fasteners include M24 bolts 6 and three nuts 7.

[0018] The lower iron yoke 1, the clamp 2 and the lower clamp limb plate 4 are inherent parts of the reactor. When the iron core column 5 needs to be bonded and installed with the lower iron yoke 1, two nuts 7 are first placed at the position of the lower clamp limb plate through hole on the upper surface of the lower clamp limb plate 4, and the bolt 6 is screwed in from the lower part of the lower clamp limb plate 4 and penetrates the two nuts 7. When the upper end of the bolt 6 is screwed out from the upper surface of the insulating plate 3, a nut 7 on the upper part is screwed in, and the insulating plate 3 is first fixed by a pair of nuts 7 on both sides of the insulating plate 3 to ensure that the insulating plate 3 remains horizontal. Finally, the limit device is fixed to the lower clamp limb plate 4 as a whole by tightening a nut 7 at the bottom. When the bolt 6 is inserted from the bottom to the top, two nuts 7 must be placed in advance between the insulating plate 3 and the lower clamp limb plate 4, and the two middle nuts 7 are locked in reverse, one nut 7 is locked downward with the lower clamp limb plate 4, and one nut 7 is locked upward with the insulating plate 3, and the order is: first lock the insulating plate 3, and then lock the lower clamp limb plate 4. After installing and fixing the insulating plate 3, apply adhesive glue to the position where the core column 5 is installed on the lower iron yoke 1, drop the core column 5 to 10 mm from the upper end surface of the lower iron yoke 1, adjust the position of the core column 5, slowly push the core column 5 into the semicircular arc groove of the insulating plate 3 for limiting, and then slowly drop the core column 5 to the upper end surface of the lower iron yoke 1. This installation process can effectively prevent the core column 5 from slipping, solve the eccentricity problem caused by slipping after the core column 5 contacts the adhesive, and prevent the core column 5 from failing to install due to excessive displacement.

[0019] In the embodiment of the utility model, only one insulating plate 3 is used, and the core column 5 can be flexibly adjusted in the left / right / up / down direction, and the semicircular arc groove of the insulating plate 3 limits the core column 5 to prevent the core column 5 from being displaced too much during installation. If two insulating plates 3 are used to form a circular limiting structure, the core column 5 can only be adjusted up and down, and the actual operation efficiency is not as good as the embodiment of the utility model that only uses one semicircular arc groove for limiting.

[0020] In the embodiments of the utility model, the technical features not described in detail are all existing technologies or conventional technical means and will not be described in detail here.

[0021] Finally, it should be noted that the above embodiments are only specific implementation methods of the present utility model, which are used to illustrate the technical solution of the present utility model, rather than to limit it, and the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any technician familiar with the technical field can modify the technical solution recorded in the above embodiments within the technical scope disclosed by the present utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the present utility model, and should be covered within the protection scope of the present utility model.

Claims

1. The reactor core column limiting device is characterized by: It includes an insulating plate and matching fasteners. The insulating plate is semicircular and has a semicircular groove at the center of the circle. The insulating plate covers the lower clamp limb plate through hole on the lower clamp limb plate. The inner diameter of the semicircular groove of the insulating plate matches the outer diameter of the iron core column. The two sides of the semicircular groove are chamfered. A thread hole is opened at a position corresponding to the lower clamp limb plate through hole on the insulating plate. The matching fasteners include a bolt and a first nut, a second nut and a third nut. The bolt passes through the lower clamp limb plate through hole on the lower clamp limb plate and the thread hole on the insulating plate. The first nut and the second nut are mounted on the bolt and are located on both sides of the insulating plate. The third nut is mounted on the bolt and is located above the lower clamp limb plate.

2. The reactor core column limiting device according to claim 1, characterized in that: The diameter of the semicircular arc groove of the insulating plate is equal to the diameter of the core column plus 4mm.

3. The reactor core column limiting device according to claim 1, characterized in that: The semicircular arc groove of the insulating plate has semicircular cutting edges and chamfers.

4. The reactor core column limiting device according to claim 1, characterized in that: The insulation board has a thickness of 30-50 mm and is made of laminated wood.

Images