JP2525966B2 - Manufacturing method of long porcelain insulator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a long porcelain porcelain porcelain tube, in which a single long porcelain porcelain porcelain tube is obtained by stacking single divided porcelain porcelain tubes through an adhesive glaze and heat-bonding them.

[0002]

2. Description of the Related Art Conventionally, a long porcelain porcelain porcelain tube used for ultra-high voltage is deformed or deformed by molding or firing an integrated product, as disclosed in, for example, Japanese Patent Publication No. 35-9540. Since it is not possible to obtain a good product with a remarkably core, a single divided porcelain tube that is divided into multiple pieces in the lengthwise direction and fired is stacked and assembled using an adhesive glaze, then heated to bond multiple single porcelain tubes. It was common to manufacture an integral long porcelain porcelain tube by joining with a glaze.

[0003]

However, in the above-mentioned conventional method for manufacturing a long porcelain porcelain porcelain tube, in the step of assembling through the adhesive glaze and then heating and joining, especially the adhesion on the inner surface of the joining portion of the divided porcelain tubes. There was a problem that the quality became unstable and the yield deteriorated depending on the degree of melt flow of the glaze. In addition, the appearance rate of adhesive glaze on the inner surface of the porcelain porcelain is not uniform due to uneven melt flow, and because the melt flow is slightly different due to the composition difference due to the color difference of the adhesive glaze, the occurrence rate of defects due to the presence of residual pores often fluctuates greatly. There is also a problem of causing variations in the electrical and mechanical strength of the porcelain bushing joint.

The object of the present invention is to solve the above problems,
A method for manufacturing a long porcelain porcelain tube that can control the flow of the adhesive glazing in the joint when stacking the divided single porcelain tubes through the adhesive glazing and heat-bonding them, and obtain a long porcelain porcelain tube with high joint strength with good yield. Is to provide.

[0005]

The first invention of the method for manufacturing a long porcelain porcelain porcelain tube according to the present invention is to form a single long porcelain porcelain porcelain tube by stacking a plurality of single-divided porcelain porcelain tubes through adhesive glaze and heat-bonding them. In the method for producing a long porcelain porcelain porcelain tube, in the inside of the lower porcelain porcelain upper end forming the joint of the single-divided porcelain porcelain pipe, for temporarily storing the adhesive glaze flowing out of the joint during heating and joining, the upper porcelain porcelain lower end It is characterized in that a glaze receiving portion that protrudes inward from the inner surface of the portion is provided.

The second invention of the method for producing a long porcelain porcelain porcelain tube according to the present invention is to obtain an integrated long porcelain porcelain porcelain tube by stacking a plurality of single-divided porcelain porcelain tubes through adhesive glaze and heat-bonding them. In the manufacturing method, the inside of the upper end of the lower porcelain tube forming the joint of the single-divided porcelain tube has a reverse taper to the joint to keep the flow of the adhesive glaze flowing out of the joint during heating and joining. It is characterized in that a glazed portion protruding toward the inner surface is provided in the shape.

Further, a third invention of the method for manufacturing a long porcelain porcelain porcelain tube according to the present invention is to obtain a long porcelain porcelain porcelain tube which is integrated by stacking a plurality of single-divided porcelain porcelain tubes through adhesive glazes and heat-bonding them. In the manufacturing method, the inside of the upper end of the lower porcelain tube forming the joint of the single split porcelain tube, for temporarily storing the adhesive glaze flowing out of the joint during heating and joining, from the inner surface of the lower end of the upper porcelain tube Also has a glazed receiving part that protrudes inward, and a glazed reservoir part that protrudes toward the inner surface in a reverse taper shape to the joint part to keep the flow of the adhesive glaze flowing out constant. Is.

[0008]

In the above-described first to third inventions of the present invention, the glaze receiving portion and / or the glaze accumulating portion are provided at predetermined positions on the inner surface of the upper end portion of the lower porcelain tube forming the joint portion of the divided porcelain porcelain tube. Therefore, it is possible to store the adhesive glaze that flows out from the joint in the heat-bonding after stacking the single-divided porcelain tubes through the adhesive glaze and temporarily store it in the glaze receiving part, and then to flow out toward the inner surface at the same time. It is possible to avoid the partial flow of the glaze and achieve a uniform flow of the glue glaze, and at the time of flowing out, it will flow on the glaze reservoir protruding toward the inner surface of the reverse taper shape from the joint, so the glaze By slowing the flow, the flow of the adhesive glaze can be made uniform, and as a result, a long porcelain porcelain porcelain tube having a high joint strength can be obtained with good yield.

[0009]

1 is a partial cross-sectional view showing the construction of an example of a long porcelain porcelain insulator according to the present invention. In the example shown in FIG. 1, the divided porcelain insulators 2-1, 2-2, 2-3 after firing are individually stacked with an adhesive glaze between them to assemble and then heated to melt the adhesive glaze once. By post-cooling and joining, a taper-shaped integral large porcelain porcelain tube 1 whose diameter gradually decreases toward the upper part is obtained. In the present invention, the inner surfaces of the upper end portions 3-2 and 3-3 of the divided porcelain bushings 2-2 and 2-3, that is, the lower porcelain bushings 2-2 and 2 forming the joint portion.
Inside the upper end portion of -3, a glaze receiving portion and / or a glaze reservoir portion, which will be described later, are provided.

FIG. 2 shows an upper end portion 3 of the long porcelain porcelain insulator of the present invention.
It is sectional drawing which shows the structure of an example of -2 or 3-3. In the example shown in FIG. 2, the upper divided porcelain tube 2- that forms the joint portion
1 (2-2) is provided with a V-shaped convex portion 5-1 (5-2) at the lower end portion 4-1 (4-2), and a corresponding lower insulator tube 2-2 (2-3) A concave portion 6-2 (6-3) that engages with the convex portion 5-1 (5-2) is provided on the upper end portion 3-2 (3-3) of the convex portion 5-1 (5-2). And the recess 6-2 (6-
3) is stacked with adhesive glaze 7 and heated to join to obtain an integrated long ceramic porcelain insulator tube 1. The feature of the present invention is that the lower insulator 2-2 (2-
3) The lower joint end 4-1 (4) of the upper divided porcelain insulation tube 2-1 (2-2) to be joined to the inner surface of the upper end 3-2 (3-3)
-Glazed part 8 formed by projecting inward from the inner surface of 2)
Of the lower end portion 4-1 (4-2) is provided in the shape of a taper A opposite to the taper A of the lower end portion 4-1 (4-2), and a glaze reservoir portion 9 projecting toward the inner surface is provided, or the glaze receiving portion 8 is followed by a glaze receiving portion 8. The point is that the part 9 is provided.

FIGS. 3A to 3C are views for explaining the concept of the glaze receiving portion and / or the glaze reservoir portion of the present invention. FIG. 3A shows a glaze receiving portion 8 related to the first invention of the present invention, and the glaze receiving portion 8 is an upper end portion 3-2 (3-3) of a lower porcelain tube forming a joint portion. 2) is formed so as to project more inward than the inner surface of the lower end portion 4-1 (4-2) of the upper porcelain bushing. Therefore, when the adhesive glaze melts and flows out to the inner surface during heating after stacking and assembling the porcelain tubes,
The adhesive glaze once melted can be stored in the glaze receiving portion 8,
As a result, it is possible to control the glaze flowing into the inner surface.
FIG. 3 (b) shows a glazed portion 9 related to the second aspect of the present invention. This glazed portion 9 is the upper end portion 3-2 (3) of the lower porcelain bushing.
-3), the inner surface of the upper porcelain porcelain lower end 4-1 (4-2) has a reverse taper A shape, that is, a taper A from the upper right portion to the lower left portion in the drawing, that is, from the upper left portion to the lower right portion in the drawing. The taper shape is formed so as to project toward the inner surface. Therefore, the adhesive glaze that has flowed out flows on the glaze reservoir that protrudes toward the inner surface of the taper shape that is opposite to the joint, so the flow of the glaze is slowed to achieve uniform flow of the adhesive glaze. be able to. FIG. 3 (c) shows an example in which both a glaze receiving portion 8 and a glaze receiving portion 9 showing a partial cross section of a main part of a third specific example of the present invention are provided, and the above-mentioned glaze receiving portion 8 and the glaze receiving portion are shown. It is the most preferable example in which both the effects of 9 can be achieved. As a result, in any case, the flow of the adhesive glaze can be well controlled, so that the adhesive glaze chipping can be eliminated, and the long ceramic porcelain porcelain tube with good yield can be obtained.

The present invention is not limited to the above-described embodiments, but various modifications and changes can be made. For example, in the above-described embodiment, the projection size from the inner surface of the glaze receiving part 8 and the reverse taper angle of the glaze reservoir part 9 are not particularly limited, but the projection size is about 1 to 3 mm and the reverse taper angle is 5 mm.
It is preferably about 10 °, because it may be appropriately determined according to the shrinkage amount of each divided porcelain tube during firing, the amount and composition of the adhesive glaze, and the like.

[0013]

As is apparent from the above description, according to the present invention, of the upper and lower joining ends of the divided porcelain insulator, the glaze receiving portion and / or the glaze reservoir portion is provided inside the upper end portion of the lower porcelain insulator. Since it is provided, it is possible to control the adhesive glaze that flows out at the time of heating and joining after stacking a plurality of single porcelain porcelain tubes through the adhesive glazing and assembling it, and as a result, it is possible to improve the yield at the time of manufacturing an integrated long porcelain porcelain tube.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing the configuration of an example of a long porcelain porcelain insulator tube of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of an example of an inner surface of an upper joint end portion of the long porcelain stoneware tube of the present invention.

FIG. 3A is a diagram for explaining the concept of an example having a glaze receiving portion of the present invention, and FIG. 3B is a view for explaining the concept of an example having a glaze reservoir of the present invention. Is a diagram for
(C) is a figure for demonstrating the concept of an example which has a glaze receiving part and a glaze reservoir of this invention.

[Explanation of symbols]

 1 Long-sized ceramic porcelain insulator tube 2-1, 2-2, 2-3 Divided porcelain insulator tube 3-2, 3-3 Upper end portion 4-1, 4-2 Lower end portion 5-1, 5-2 Convex portion 6-1, 6- 2 Recessed part 7 Adhesive glaze 8 Glazed receiving part 9 Glazed part

Claims (3)

(57) [Claims] 1. A method for manufacturing a long porcelain porcelain insulator in which a plurality of single porcelain porcelain pipes are stacked with adhesive glazing and heat-bonded to obtain an integrated long porcelain porcelain porcelain pipe. Inside the upper end of the lower porcelain tube, a glaze receiving portion protruding inward from the inner surface of the lower end of the upper porcelain tube is provided for temporarily storing the adhesive glaze flowing out from the joint during heating and joining. A method for manufacturing a long-sized ceramic porcelain insulator. 2. A method for producing a long porcelain porcelain porcelain tube, wherein a plurality of single porcelain porcelain porcelain tubes are stacked with adhesive glazing and heat-bonded to obtain an integrated long porcelain porcelain porcelain pipe, wherein a joint portion of the single division porcelain porcelain is formed. Inside the upper end of the lower porcelain tube, a glazed reservoir protruding toward the inner surface was provided in a reverse taper shape to the adhesive to keep the flow of adhesive glaze flowing out from the joint during heating and joining constant. A method for manufacturing a long porcelain porcelain porcelain tube characterized by. 3. A method for manufacturing a long porcelain porcelain insulator in which a single long porcelain porcelain insulator is obtained by stacking a plurality of single divided porcelain insulators with an adhesive glaze and heating and joining them to each other. Inside the upper end of the lower porcelain tube, a glaze receiving part protruding inward from the inner surface of the lower end of the upper porcelain tube is provided for temporarily storing the adhesive glaze flowing out from the joint at the time of heating and joining. A method for manufacturing a long porcelain porcelain porcelain pipe, characterized in that a glazed portion projecting toward the inner surface is provided in an inverse taper shape to the joining portion so as to make the flow of the ceramics constant.