JPS6311686Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to the winding of a dry type or oil-filled stationary induction device, and in particular forms a cooling duct between the layers of the winding wound in a cylindrical shape, and The present invention relates to a winding provided with an insulating member.

[Technical background of the invention and its problems]

For the cylindrical windings used in stationary induction equipment, in order to improve the cooling effect or to obtain insulation between the winding layers, a rod-shaped insulating member is inserted between the layers, and a cooling or insulating duct is installed. is forming. In order to wind this winding wire into a cylindrical shape, since the winding wire is normally wound in a spiral shape, the ends of the winding wire are inclined, so an end insulating member is used along the end of the winding wire. is installed to prevent the windings from shifting, to prevent the windings from deforming due to electromagnetic mechanical force, and to secure the insulation between the windings and the iron core.

As shown in FIG. 1 as an example, such a conventional stationary induction device winding is made by winding a winding conductor 2 in a cylindrical shape on a central insulating tube 1 to form a winding layer 3. It is formed by laminating several winding layers 3.

The ends of each winding layer 3 are inclined due to the spirally wound wire conductor. An annular end insulating member 6 integrally formed to match the inclination of the winding conductor 2 is disposed. Note that as the end insulating member 6a, it is also possible to use a member in which several sheet-like insulating members having end slopes as shown in FIG. 3 are overlapped and formed into a circular shape.

In the annular end insulating member 6 shown in FIG. 2 used in such conventional windings, when the winding layer 3 is made up of multiple layers, many types of insulating rings with different sizes and shapes are used. In addition to the preparation required, it is necessary to process the end of the insulating ring into a tapered shape, which has the disadvantage of poor processability and material yield. On the other hand, the third
The sheet-like end insulating member 6a shown in the figure lacks rigidity, so it tends to have a polygonal shape with the spacing insulating member 4 as a fulcrum, and it is better than the annular end insulating member 6 as described above. However, since the support for the winding layer 3 becomes weak and a part of the cooling duct 5 is blocked, the cooling effect is deteriorated. Furthermore, it is difficult to support the end insulating blank material 6a, and there are also other problems such as it being easy to fall off during machining.

Therefore, as shown in FIG. 4, the spacing member portion 7a
It has been proposed that the duct insulating member 7 is constituted by the duct insulating member 7 and end member portions 7b integrally formed at both ends thereof. As shown in FIG. 5, a plurality of duct insulating members 7 are arranged on the insulating tube 1 at approximately equal intervals.
A winding layer 3 is formed by winding the winding conductor 2 in a cylindrical shape on the spacing insulating member 7a, and by repeating this process, a winding having a plurality of winding layers 3 is formed. be.

However, this conventional type also has the following drawbacks. In other words, the duct insulation member is used to prevent deformation of the winding due to electromagnetic mechanical force in the event of a short circuit, or to prevent deformation of the winding when the strength of a conductor such as aluminum is relatively weak during coil winding work, and also to prevent deformation of the winding when the conductor such as aluminum is relatively weak during coil winding work. In order to stably support the weight, it is necessary to align and arrange the duct insulating members 7 of each layer in the radial direction of the winding. However,
During coil winding work, the position of the duct tends to shift due to the force applied in the winding direction, and it is necessary to fix the duct insulating member 7 to the winding layer by adhesive or other means, which increases the amount of material used for the duct insulating member 7. This results in a reduction in the cooling effect of the winding and complicates the coil winding work.

Moreover, in this conventional duct insulating member 7, since the spacing member portion 7a and the end member portion 7b are integrally molded, the plurality of duct insulating members 7 are arranged approximately equally, and the windings are wound on the outside thereof. If the conductor 2 is wound into a cylindrical shape, the ends of the wound conductor 2 will be inclined, and therefore the dimensions of the end member portions 7b must be changed for each duct insulating member 7. Furthermore, the winding conductor 2
If the dimension in the winding direction changes, the inclination dimension also changes accordingly, requiring molds with different dimensions to match the change, and the integrally molded duct insulating member 7 has the disadvantage of being extremely expensive.

[Purpose of invention]

The present invention was proposed to eliminate the above-mentioned drawbacks, and its purpose is to provide a stationary induction equipment winding system that is easy to assemble and that eliminates the risk of misalignment of the duct insulation member between each winding layer. The purpose is to provide a line.

[Summary of the idea]

In the stationary induction device winding of the present invention, the spacing member portion constituting the duct insulating member and the end member portions at both ends thereof are constructed from separate members, and both are integrated using a fixing pin. A fixing pin is made to protrude from the surface of the insulating member, and the protruding portion is fitted into the duct insulating member of the adjacent winding layer,
This is to fix adjacent duct insulating members.

[Example of idea]

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 6 and 7. Note that the same parts as those of the conventional type shown in FIGS. 1 and 4 are given the same reference numerals.

In FIG. 6, the duct insulating member 8 consists of a spacing member portion 8a and end member portions 8b at both ends thereof, both of which are fixed together by an insulating member fixing pin 8c. This spacing member portion 8a is formed into a rod shape with a thickness that forms a predetermined duct in the winding layer 3. On the other hand, the end member portion 8b is
Since the ends of the windings are inclined, the portions that come into contact with the end faces of the windings are inclined, and have a wall thickness that matches the thickness of the winding conductor 2. This end member portion 8b is pinned with a fixing pin 8c and fixed to the spacing member portion 8a.
That is, one end of the fixing pin 8c is pinned to the spacing member portion 8a and the end member portion 8b, and the other end is fixed in a shape protruding onto the end member portion 8b. The insertion hole for the fixing pin 8c drilled in the spacing member portion 8a is hollow by the protruding length of the fixing pin 8c, and this serves as a fitting portion into which the fixing pin of the adjacent duct insulating member is inserted. It has become 8d.

This duct insulating member 8, as shown in FIG.
A plurality of wire conductors 2 are arranged approximately equidistantly on the insulating cylinder 1, and the winding conductors 2 are wound in a cylindrical shape on the spacing member portions 8a to form the winding layer 3. On this winding layer 3, a second layer of duct insulating member 8 is placed within the fitting portion 8d of the fixing pin of the first layer end member portion 8b.
The fixing pin 8c protruding upward is inserted while being arranged. Thereafter, by repeating this process, a winding having a plurality of winding layers 3 is formed.

[Effect of idea]

In the winding wire of the present invention having the above-mentioned configuration, the duct insulating members 8 of each layer are fixed together by the fixing pins 8c, so that the duct insulating members 8 are It is possible to provide a strong and strong winding without any positional displacement. Also,
Since the fixing pins serve as guides when arranging the duct insulating members, the work efficiency can be improved. In particular, since the fixing pin is used for positioning the duct insulating member, there is no need to provide a separate member exclusively for positioning, and the overall structure can be simplified. Furthermore, the duct insulation member 8
is formed by fixing the spacing member portion 8a and the end member portion 8b integrally with the fixing pin 8c, so there is no need for a mold like the conventional one-piece molding, and there is no need for dimensional changes in the winding conductor 2. In contrast, it is possible to provide an inexpensive duct insulating member 8 that is easy to handle.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional perspective view showing the winding of a conventional stationary induction device, Fig. 2 and Fig. 3 are perspective views showing a conventional end insulating member, and Fig. 4 is a conventional duct insulating member. 5 is a partially cross-sectional perspective view showing a stationary induction winding using the duct insulating member of FIG. 4; FIG. 6 is a perspective view of the duct insulating member of the present invention;
FIG. 7 is a partially sectional perspective view showing a stationary induction device winding using the duct insulating member of the present invention. DESCRIPTION OF SYMBOLS 1... Insulating cylinder, 2... Winding conductor, 3... Winding layer, 4... Spacing insulation member, 5... Cooling duct, 6
...Annular end insulating member, 7, 8...Duct insulating member, 7a, 8b...Spacer member portion, 7b, 8b...
...End member portion, 8c...Fixing pin, 8d...Fixing pin fitting portion.

Claims (1)

[Scope of utility model registration request] In a stationary induction device winding that has a plurality of cylindrically wound winding layers and a plurality of duct insulating members distributed in the circumferential direction between the winding layers to form a duct, the spacing member portion The end member portions supporting the winding ends at both ends are fixed by fixing pins with protruding ends to form duct insulating members, and the protruding portions of the fixing pins fit into the duct insulating members of the adjacent winding layers. A stationary induction device winding characterized by: