JPS58128711A - Binding structure for shunt reactor iron core - Google Patents

Abstract

PURPOSE:To improve the heat cycle resistance and lower the noise level, by winding a resin-impregnated binding tape and a resin-impregnated heat-shrinkable glass prepreg tape on a protecting film layer wound on the peripheral edge of an iron core part, through a cushioning layer. CONSTITUTION:A protecting film layer 4 formed from a polyimide paper, for the prevention of cutting by an iron core plate, for example, which is wound with two turns of a polyimide film, and a cushioning layer 5 formed from a nitrile rubber material, for example, are provided on the peripheral edge of an iron core part constituted by buckets 2 combined on a disc so that the layer 4 is on the inside of the layer 5. The outer periphery thereof is wound with a binding layer 6 constituted by a double tape having as its inner layer a resin- impregnated binding tape and as its outer layer an epoxy resin-impregnted heat- shrinkable glass prepreg tape, for example. The heat-shrinkable glass prepreg tape is hardened and shrinked by a heat treatment to tighten the iron core part 1. By such a construction, it is possible to improve the heat cycle resistance and lower the noise level.

Description

[Detailed Description of the Invention] The present invention relates to the structure of a shunt reactor core.
゜Recently, with the long and short transmission of large amounts of power, for example, 275K
Shunt reactors are installed depending on the distance and capacity as phase adjusting equipment to suppress the voltage rise due to the reactive power of the piercing phase at one load in V or 500KV ultra-high voltage systems and cable systems. OThe iron core of this shunt reactor is
Conventionally, iron core plates of different lengths were piled up all at once to form a disk shape, which was magnetically connected via spacers. They are layered to preserve the flavor.

By the way, this iron core is made of oriented silicon, 1llll&, which has excellent magnetic properties. 2. Figure 1 shows a perspective view of the packet of the iron core machine that constitutes the iron core part.A so-called radial core like T is used.That is, the iron core part l is the same as the iron core II!
N-shaped packets 2 are glued together with resin in a radial direction facing the shrimp, and the central part l
This has a through hole 3 for assembly. As mentioned above, this radial core has f & air exchange between the upper and lower sides, so if the iron core machine looks from the upper iron core part and comes into contact with the lower iron core part, There is a risk of a short circuit accident in the shunt reactor.

Therefore, there is a demand for a shunt reactor animal core Q] binding structure that securely attaches the packet of the iron core machine and prevents the iron core portion from becoming de-bathed.

Conventionally, this binding structure was carried out around the iron core.

In order to prevent the glass fibers of the ear tape from being cut, a presspod with a high vR or a protective film was inserted.0 However, with the conventional core binding structure as described above,
We are satisfied with the durability of the shunt reactor, which does not cause cracks even under the heat cycle that occurs due to the wide range of temperature changes associated with fluctuations in operating conditions, and the reduction of cracking due to the electric 4IB rotation of the iron core machine. The present invention is directed to a shunt reactor core that solves the gap point of the conventional shunt reactor core (made of Indian 11111), improves heat cycle resistance, and lowers wIf. The purpose is to provide a binding structure.

According to the present invention, this object is achieved by forming an insulating film layer wound around the periphery of the shunt reactor core, which is formed by combining core plates radially and vertically to form a circular 4R shape. Through the double tape made of resin-impregnated Kui/Tochi-1 and grape fat-impregnated heat-absorbing glass gel leg tape 4! ! Next, an embodiment of the indium structure of the present invention (shunt reactor iron LL) coupled with an indium structure in which the resin-impregnated heat-absorbing glass prepreg tape is cured by heat treatment Example 1: This will be explained with reference to FIGS. 3 and 4.

In FIG. 1, parts corresponding to FIGS. 1 and 412 are given the same reference numerals. FIG. 3 is a ten-circle diagram of the shunt reactor core, and FIG. 4 is a longitudinal sectional view.

In Fig. 43 and Fig. 4, the iron core fil is formed into a disc-shaped φ by combining the kerato 2. A through hole 3 is provided in the center part through which a bolt or stud for assembly can be inserted. .

This iron core SL (/, Jmdi koha naiyuno) is plated with polyimide paper to prevent cutting by the iron core board, for example, and 4 scratches are 0.
．． The thickness of the 8cm polyimide film impregnated on the Nino film is approximately 1mm. Protection of h-film No. 4, Zara 4-ko 0.5
A loose 11 #5 made of nitrile rubber thread material is provided at its own thickness, and on its outer periphery, for example, the inner layer is a resin-impregnated bind tape, and the outer layer is an epoxy resin-impregnated heat-absorbing glass prepreg tape (warp thread). -Glass fiber, weft thread-1-
- A binder tape 6 is provided, which is made of a double-layered tape made of (polyester fiber) wound to a thickness of approximately 4 cm. The epoxy resin heat-containing glass prepreg tape of bind f#16 is hardened by heat treatment to form a structure for tightening the heat-containing iron core.

The above-mentioned buffer J-so 5 is not limited to nitrile rubber thread, but may also be a urethane-based, silicone thread, fluororesin thread material, or a sheet of closed-cell material. In addition to the epoxy resin, hydantoin M II BFI, Bismal II tote triazine resin, polyimide thread resin, and the like can be used as the impregnating resin for the stirred heat-absorbing glass tape containing fallen fat. These fat-impregnated heat-absorbing glass prepreg tapes can be cured and heat-shrinked by heat treatment at 80°C to 180°C.According to the bind structure of the shunt reactor iron according to the present invention, By setting the thickness of the buffer layer to about 0-5 wm,
A valley with an iron core diameter of 1000 mm [Even a shunt reactor of 120 to 180 MVA is subject to heat cycles due to temperature differences,
It was confirmed that there are young fruits that absorb the noodle soup. In other words, in terms of heat cycle resistance, even in tests conducted for 10 cycles at -30°C to 140°C, the bind structure did not crack at 1%.Also, the heat cycle resistance of the iron core was higher than that of the conventional laminated core type. For the 65.7 horn or the radial core type 637 horn without a buffer layer,
The radial core type with the buffer layer according to the invention ζ was 62.5 horns.

As described above, the binding structure of the shunt reactor core according to the present invention not only enables external reinforcement and low noise by improving heat cycle resistance, but also double tape with resin-impregnated glass 1 repreguchi 1 as the outer layer. It is possible to form a beautiful shunt of the outer fitting by using the reactor core.

[Brief explanation of the drawing]

Figure 1 is a plan view of the shunt 1 noaktor iron core, Figure 2 is the 8
(Constituting the iron core part in Fig. 1) (perspective view of kerato). Fig. 3 is a plan view of one embodiment of the present invention, and Fig. 4 is a sectional view a. 1: iron core part, 4: preservation film layer, 5: Buffer layer. 6: Bind layer. Figure 1 Figure 4

Claims (1)

[Claims] 1) Iron core plates are combined radially and vertically into a disk shape.
A two-wheel tape consisting of 11 fat-impregnated bind tape and 1llll impregnated heat-containing glass pregreg tape was wound on the protective film layer wrapped around the periphery of the shunt reactor core thus formed, via the Ii layer. A binding structure of a shunt reactor core with a q# image of curing the resin-impregnated heat-absorbing glass prepreg tape by heat treatment. (India Structure 03) %Iff
Claims 1. (In India Structure 1, a shunt reactor core characterized in that the can layer is made of urethane yarn material) (India Structure 04) Claim 1
(In Indian structure, shunt reactor iron core characterized in that the loose il+- is made of silicone thread material) (Indian structure 05) 41 #'Fit11 The binding of the yoke of the search for the 1st burial mound 11) Bind structure of shunt reactor core characterized in that the buffer layer is made of a fluororesin thread material 06) In the bind structure described in Claim 1 JA, the buffer layer is made of an independent 52tN material. A shunt reactor iron core binding structure featuring: 7) In the binding according to any one of claims 1 to 6, it is noted that the night-stirring fat of the heat-immersed glass prepreg 7' is an epoxy resin. Binding structure of shunt reactor core as a percentage value. 8) In the binder compression luxury according to any one of claims 1 to 6, the 4M fat of the glass prepreg tape is a hydantoin fat. The binding structure of the shunt reactor core is I-built with a waiting ridge and T. 9) In the bind structure according to any one of Claims 1 to 6, the agitation part of the side fat-impregnated heat-absorbing crow tape is made of bismal imide-triazine thread resin. 10) Any one of claims 1 to 6 (
In the bind structure described above, it is important to note that the impregnated resin of the resin-impregnated heat-sealable glass tape is a polyindo resin. # Signs of shunt reactor iron core) (India #II
Construction. 11) Pine according to any one of claims 1 to 10)"411
Bind structure of shunt reactor core characterized by heat treatment at 80'0.