JPS59217311A - Core type reactor with gap - Google Patents

Abstract

PURPOSE:To simplify clamping structure, and to improve workability and the space factor of a main core leg by fixing a plurality of connecting members by studs, both ends thereof have screw sections, and forming a clamping member. CONSTITUTION:A clamping member 25 is formed by each fastening studs 27A and 27B with screw sections 27a to both ends of a plurality of cylindrical connecting members 26. With the clamping member 25, each stud 27A and 27B is projected from clamping plates 21 and 19 while they are penetrated into the clamping plate 21 and a caul 20, inserted into inserting holes 18 and penetrated into the clamping plate 19, nuts 28 are each screwed into the screw sections 27a of the studs 27A, 27B, and bolts 23 for the clamping plate 21 are screwed and the caul 20 is pushed. Consequently, clamping member 25 is given tension while yokes 15, 16, main core legs 13 and side legs 11, 12 are clamped and unified, thus forming a reactor proper. Accordingly, since the mutual distances of connecting members 26 for the clamping member 25 can be shortened, the diameters of the inserting holes 18 penetrating the clamping member 25 can be reduced, and the space factor for a core of the main core legs 13 and the yokes 15, 16 can be improved.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a geared core reactor with an improved core tightening structure in which both ends of a main core leg having a gap are tightened by a tightening connection member via a yoke. Regarding.

[Technical background of the invention and its problems]

In stationary induction electric appliances such as transformers and accelerators, magnetic flux flowing through the iron core causes magnetostriction and magnetic attraction force to generate vibrations that are mainly proportional to the square of the magnetic flux density, resulting in increased noise.

In particular, as shown in Figure 1, the core of a reactor that has a gap part is susceptible to magnetic attraction due to the magnetic flux (2) passing through one gap part (1), and the gap part becomes a source of large vibrations and noise. , it is necessary to properly tighten the main core leg (3) having this gap portion (1) in the vertical direction via the yoke (4). At the same time, in order to prevent local overheating due to the spread of the magnetic flux (2) in the gap (1), the tightening connection member must be divided into a plurality of pieces.

As an example, in the case of a radial core reactor that is tightened by passing tightening connecting members above and below the main core legs, the conventional core tightening structure is the one shown in FIG. lateral leg aυ,
Main core leg (1) having (1) and gap portion (13a)
3, the winding I is wound around the main core legs (1, 1).The yokes (15, (Ie) are brought into contact with both ends of the side legs αυ, α2 and the main core legs (131) so as to sandwich them. Then, an insertion hole (1) is formed in the main core leg (131, yoke (19, αe) through which a plurality of rod-shaped tightening connection members (17) are inserted. end (17a)
is pushed into one of the clamping plates (11) and welded. This clamping plate (ll is brought into contact with the outer surface of one of the yoke Oe, the clamping connection member an is passed through the insertion hole a barrel, and the yoke is (15)
The other end (17b) of the tightening connection member (17) passes through the patch plate provided on the outside of the
) into the nut (2). The tightening plate (21) presses the cover plate with the bolt (2) and applies tension to the tightening connection member aη to connect the yoke (+-5), (16)
, Tighten the main core leg a. Note that the bolt (c) is tightened with a rear lock nut (23a).

The nut tightening part of the tightening connection member (17) of the tightening plate ai) is not shown in the figure, but if a plurality of, for example, four tightening connection members αη are used, each nut can be tightened with each other. It is necessary to provide a margin between the tightening connecting members αη so that they fit together during the attachment work. Therefore, in order to pass the tightening connecting member ση, it is necessary to make the insertion hole (II) formed in the main core leg α3iC larger.Therefore, the main core leg α□□□ must be made larger. Since the end (17a) of the tightening connecting member (17) is fixed by welding, there is a risk that welding splashes from welding may enter the inside of the backing product and deteriorate the quality.Also, since it is welded, There were problems that needed to be improved, such as the extremely difficult disassembly and rework.

[Purpose of the invention]

The present invention has been made in consideration of the above points, and its purpose is to simplify the tightening structure to improve workability and space factor of the main core legs, and to improve quality. The purpose of the present invention is to provide an iron-core reactor with gears that can be used.

[Summary of the invention]

In order to achieve this object, the present invention involves winding a winding around a main core leg having a gap portion, arranging yokes at both ends of the main core leg so as to sandwich the main core leg, and tightening the main core leg. Plates were placed on the outside of each yoke, studs with threaded parts were fixed to both ends of the plurality of tightening connection members, and the studs were fixed to the insertion holes formed in both yokes and the main core leg. By inserting a tightening connection member, screwing a nut into the threaded part of the stud that passes through each tightening plate, and tightening the yoke and main core legs, the tightening structure is simplified and workability is improved. Its characteristics include improving the space factor of the legs and improving quality.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An iron core reactor with a gear according to an embodiment of the present invention will be described below with reference to the drawings. The same parts as in FIG. 2 are given the same reference numerals. In FIG. 3, among the main core legs a3 having side legs (11), (13) and a gap part (13a),
Wind the winding ← on the main core leg a3. Lateral legs αυ, a'
A and the main core legs (130) Abut the yokes AS and AS on both ends of the main core legs so as to sandwich them. Then, the main core legs ←.

A through hole is formed in the yoke (LL (lfEl) through which a tightening member (described later) is pushed through. Then, a tightening plate (L) is brought into contact with the outside of the yoke (IQ), and the outside of the yoke (15) is A backing plate (A) is attached to the side, and a tightening plate 01) is placed on the outside, and a bolt (C) and a locking nut (C11) are attached to this tightening plate C11).
23a) is provided.

The above-described tightening member (c) is a stud (27A) having threaded portions (27a) at both ends of a plurality of rod-shaped connecting members (c).
) and (27B) are fixed to each other. Then, this tightening member (c) is passed through the tightening plate &υ and the backing plate, and is inserted into the insertion hole (1 camphor), and the tightening plate ← passes through the camphor, and the respective studs (27A) and (27B) are inserted. the tightening plate (21
) and θt, and studs (27A), (
By screwing the nuts into the threaded parts (27a) of 27B), screwing in the bolts (c) of the tightening plate (21), and pressing the cover plate (4), tension is applied to the tightening member (c). At the same time, the yokes as, an, the main core legs 0 and side legs (11), and the α side are tightened to form a reactor body. The reactor body is housed in a container (not shown), and the inside thereof is filled with a cooling medium such as insulating oil to form a geared iron core reactor.

As shown in FIG. 4, the tightening member (C) is formed by a plurality of, for example, four, connecting members (C) arranged in a substantially quadrilateral arrangement, each end of which is fixed to a stud.

Next, the effects of the present invention will be described. Since the distance between the connecting member (2e) of the tightening member 0ω can be reduced, the insertion hole (1 second diameter) through which the tightening member θ can be passed can be reduced, and the main iron leg (13) and the yoke (L !51.The space factor of the iron core in (16) can be improved.

In addition, a plurality of connecting members (20 is a stud (27A),
Since it is integrated by (27B), the tightening work can be simplified. Furthermore, the stud (27A), (
27B) can be tightened by screwing in a nut (company).
The tightening member C can be easily attached and detached during disassembly and assembly. Furthermore, since there is no special welding work involved, there is no risk of deterioration in quality due to welding.

[Efficacy of invention]

As explained above, according to the present invention, an iron core reactor with a gear lug can simplify the tightening structure, make the tightening work easier, improve the space factor of the rounded iron core, and further improve the quality. can be provided.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the magnetic flux distribution of a main core leg having a general gap portion, and FIG. 2 is a partially sectional side view of a conventional geared core reactor. FIG. 3 is a partially sectional side view of the geared iron core reactor of the present invention. 4 is a partial top plan view of FIG. 3; FIG. ←υ, α2... side leg, α rise... main iron leg, (13a)
...gap section. αXun...-Winding, QS, (11...Yoke, αη...
Tightening connection member. α...Insertion hole, α1...Tightening plate, (c)...
Tightening member. (1)...Connection member, (27A), (27B)
··stud. (27a)--Screw part, (2119...Natsut. Agent Patent Attorney Inoue-Male No. 1 Fig. 2 Fig. t8 t'lcl'' Fig. 3 Fig. 4

Claims (1)

[Claims] A winding is wound around a main core leg having a gap portion, and yokes are arranged at both ends of the main core leg so as to sandwich the main core leg,
A main body is constructed by providing a clamping plate on the outside of each of the yokes and a plurality of rod-shaped clamping connecting members passing through the yoke and the main core leg, and tightening the clamping plate. In a geared iron core reactor in which this main body is housed inside a container and filled with a cooling medium, a tightening member is formed by fixing studs each having a threaded portion to both ends of a plurality of connecting members. , the tightening member is passed through both the tightening plates and the insertion hole, and nuts are screwed into the threaded portions of the both studs, respectively, so that the tightening plates are tightened and fixed. Iron core type reactor.