JPH04110397U - Studs for monolithic refractories - Google Patents

Abstract

(57) [Summary] [Objective] To provide a stud for monolithic refractories which is a stud that can replace a conventional Y-shaped stud, is less likely to cause cracks in the refractory, and is easy to manufacture and install. [Structure] Stud 12 for monolithic refractories is made of a circular metal tube whose total length is sufficiently smaller than its inner diameter.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a stud used to hold monolithic refractories inside and outside pipes, tanks, etc. Regarding.

[Conventional technology]

Traditionally, it has been used around tanks and pipes (e.g. lance pipes) to protect materials from high temperatures. Although monolithic refractories are sometimes placed on the surface of tanks and pipes, There is a risk of it falling if the was being carried out. As such a stud, for example, Japanese Patent Application Laid-Open No. 57-58938 A Y-shaped stud is known as described in the above publication. And this Y-shaped shape For example, as shown in FIG. 4, using the stud 10 of The stud 10 is welded to the surrounding area to fix the surrounding monolithic refractory material. .

0002

[Problem that the idea aims to solve]

However, when manufacturing conventional Y-shaped studs, they are usually cut to a predetermined length. Either make a break at the tip of the cut round bar and open the break at an appropriate angle, or Alternatively, it is manufactured by cutting expanded metal at appropriate positions as described in the above publication. Therefore, there was a problem in that manufacturing was very time-consuming. In addition, there is a difference in thermal expansion between the refractory and the stud, resulting in poor holding due to thermal distortion. Because of this, cracks may occur in the refractory from the tip of the stud. There were problems in that the installation direction of the card was limited and the installation was complicated.

0003 This invention was developed in view of the above-mentioned circumstances, and is designed to prevent cracks, etc. from forming within refractories. The purpose is to provide a stud for monolithic refractories that is easy to manufacture and install. do.

0004

[Means to solve the problem] The stud for monolithic refractories according to the present invention, which meets the above purpose, has a total length longer than the inner diameter. It consists of a sufficiently small metal ring.

[0005]

[Effect]

In the stud for monolithic refractories according to the present invention, the total length is sufficiently longer than the inner diameter. It is made up of a small metal ring, so when manufacturing it, a metal tube is used. This can be done by cutting the material to a predetermined length. and match the dimensions of the studs to be used. Since it is easy to do so, handling etc. become easy. In use, it does not have an end like a conventional Y-shaped stud. Cracks will not occur starting from this edge, and furthermore, the Since it can be installed in a horizontal position, it acts as a retainer to prevent thermal distortion.

[0006]

【Example】

Next, examples embodying the present invention will be described to provide an understanding of the present invention. Here, FIG. 1 shows the state of use of a stud for monolithic refractories according to an embodiment of the present invention. 2 and 3 are partial sectional views.

[0007] As shown in FIGS. 1 to 3, a stud 1 for monolithic refractories according to an embodiment of the present invention 2 consists of an iron ring, and in this example, the SGP ring has an outer diameter of 73.3 mm. The pipe is constructed by cutting an STPG pipe into a length of 10 mm. In use, as shown in Figures 1 and 2, the core tube 13 of the lance pipe is First, four studs 12 are welded to the surface, and the next stud 12 is welded after a predetermined interval. Adjacent studs are welded in a direction perpendicular to each other. Welding of this stud 12 , the stud 12 is placed in a predetermined position by handling, and its contact surface is manually welded. Alternatively, you can use carbon dioxide gas welding, or you can manufacture a special jig and arc the contact area. You can also do Kustad.

[0008] As shown in FIG. 3, the studs 12 are welded around the core tube 13 at a predetermined pitch. After that, the core tube 13 is placed in a predetermined formwork, filled with monolithic refractory material from the outside, and then The lance pipe 14 is completed by leaving it or heating it for this period. In the above example, the length of the ring was about 13% of the outer diameter, but the thickness of the ring was approximately 13% of the outer diameter. It is sufficient if the ring is wide enough, but if it is too long, monolithic refractories may be inserted inside the ring. 30% of the outer diameter. It is preferable that it is below.

[0009]

[Effect of the idea]

As is clear from the above description, the stud for monolithic refractories according to the present invention has the following features: Compared to conventional Y-shaped studs, there is no sharp part, so you can use that part as a starting point. As a result, cracks are less likely to occur. In addition, its manufacturing involves cutting metal pipes to a specified length. Since it can be done by The studs for monolithic refractories must be handled during installation work as well. Since this is easy, automation work can be performed relatively easily. Then, the inside of the installed monolithic refractory stud is filled with monolithic refractory. Therefore, internal cracking, peeling, etc. can be prevented.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a state in which a stud for a monolithic refractory according to an embodiment of the present invention is used.

FIG. 2 is a partial vertical cross-sectional view showing the state in which the stud for monolithic refractories according to the above embodiment is used.

FIG. 3 is a sectional view of a lance pipe using the monolithic refractory stud according to the above embodiment.

FIG. 4 is a sectional view of a lance pipe using a conventional Y-shaped stud.

[Explanation of symbols]

12 Studs for monolithic refractories 13 Core tube 14 Lance pipe

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Kosuke Yamashita 1-1 Hibata-cho, Tobata-ku, Kitakyushu, Fukuoka Prefecture Shin Nippon Steel Corporation Yawata Works (72) Creator Koji Kono 1-1 Hibata-cho, Tobata-ku, Kitakyushu, Fukuoka Prefecture Shin Nippon Steel Corporation Yawata Works

Claims (1)

[Scope of utility model registration request] 1. A stud for a monolithic refractory, comprising a metal ring whose entire length is sufficiently smaller than its inner diameter.