CN215050430U

CN215050430U - Novel reinforcing ring for opening large hole on large furnace shell

Info

Publication number: CN215050430U
Application number: CN202022593005.3U
Authority: CN
Inventors: 楼希葆; 黄碧辉; 张屹; 吕遐平
Original assignee: Baosteel Engineering and Technology Group Co Ltd
Current assignee: Baosteel Engineering and Technology Group Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-12-07
Anticipated expiration: 2030-11-11

Abstract

The utility model relates to a be used for large-scale stove outer covering to open big novel beaded finish, it includes vertical crown plate and horizontal crown plate, the outer lane of vertical crown plate is located to the horizontal crown plate, adopts the arc transition between vertical crown plate and the horizontal crown plate, and the beaded finish adopts butt weld with stove outer covering board trompil edge. The utility model discloses can reach anticipated reinforcement effect, beaded finish body and adopt the whole forging of mill, the field work volume is little, with stove outer covering plate welding and quality testing convenience, the quality assurance degree of difficulty is little, is the new method of solving large-scale stove outer covering and opening the macropore reinforcement problem, is worth promoting.

Description

Novel reinforcing ring for opening large hole on large furnace shell

Technical Field

The utility model relates to a novel reinforcing ring for opening a large hole on a large furnace shell.

Background

According to the existing data, the reinforcing method for the opening of the shell structure basically has the following three methods:

(1) mode 1: no reinforcing ring was inserted into the tube for reinforcement as shown in fig. 1.

(2) Mode 2: the belt reinforcing ring is inserted into the pipe type reinforcement, as shown in figure 2.

(3) Mode 3: flush-mount adapter, as shown in fig. 3.

The insertion pipe adopted by the

modes

1 and 2 extends into the inner wall of the furnace shell for a section of length, so that the section of the furnace shell at the opening part is increased, and the stress of the furnace shell at the opening side is reduced; when the thickness of the furnace shell is not large, the welding operation is not difficult and the quality of the welding seam can be ensured by adopting a T-shaped welding joint between the insertion pipe and the furnace shell. Mode 3 adopts L shape inserted tube and stove outer covering plate parallel butt joint, has avoided in mode 1 and mode 2 the T type between inserted tube and the stove outer covering to connect, and the degree of difficulty of welding seam reduces, improves the condition that welding seam actual operation and welding seam quality detected.

For a large furnace shell, the thickness of the furnace shell is usually more than 40mm, the thickest part reaches 90mm, if the thickness of a welding seam of a T-shaped joint reaches 80mm or more when the mode 1 or the mode 2 is adopted for reinforcement, the welding difficulty is high, the quality of the welding seam is not easy to guarantee, and practical engineering experience also shows that the welding seam between the perforated insertion pipe and the furnace shell is the part which is most prone to crack. When the method 3 is adopted for reinforcement, although the T-shaped welding joint during the reinforcement in the method 1 or the method 2 is avoided, the secondary stress at the turn of the L-shaped reinforcing ring is far greater than that in the method 1 and the method 2, and the reinforcement effect is limited and even cannot meet the expected requirement.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a novel reinforcing ring for opening a large hole on a large furnace shell, which solves the problems of effectiveness of reinforcement and weldability of a thick plate.

In order to solve the technical problem, the utility model discloses a realize like this:

a novel reinforcing ring for opening a large furnace shell is characterized in that: the novel furnace shell structure comprises a vertical ring plate and a horizontal ring plate, wherein the horizontal ring plate is arranged on an outer ring of the vertical ring plate, arc transition is adopted between the vertical ring plate and the horizontal ring plate, and a butt welding seam is adopted between a reinforcing ring and a furnace shell opening.

The novel reinforcing ring for opening the large furnace shell is characterized in that: the vertical ring plate and the horizontal ring plate are integrally forged in a factory

The utility model has the advantages that: the size and the plate thickness of each part of the reinforcing ring are determined through calculation, so that the stress amplification of the hole edge furnace shell plate caused by hole opening can be effectively controlled; thereby achieving the purpose of reinforcement. The vertical annular plate and the horizontal annular plate are in arc transition, so that stress concentration can be effectively reduced. The edge of the field opening of the reinforcing ring and the original furnace shell plate is connected by adopting a butt welding seam, so that the welding difficulty is reduced, the welding operation and the welding seam quality detection are convenient, and the welding quality is ensured.

The large-scale stove outer covering is opened the macropore and is had very big influence to the structural strength of stove outer covering, and the reinforcement effect directly influences the safety that bears of stove shell plate, when adopting this novel beaded finish, can reach anticipated reinforcement effect, beaded finish body and adopt mill's whole forging, and the on-the-spot work load is little, with stove outer covering plate welding and quality testing convenience, the quality assurance degree of difficulty is little, is the new method of solving large-scale stove outer covering and opening the macropore reinforcement problem, is worth promoting.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a schematic view of a method for reinforcing an opening of a shell structure in the prior art.

Fig. 2 is a schematic view of a second method for reinforcing the opening of the shell structure in the prior art.

Fig. 3 is a schematic view of a reinforcement method for an opening of a shell structure in the background art.

Fig. 4 is a schematic diagram of the present application.

Detailed Description

As shown in fig. 4: the utility model provides a be used for large-scale stove outer covering to open big novel beaded finish, it includes vertical crown plate 1 and horizontal crown plate 2, the outer lane of vertical crown plate is located to the horizontal crown plate, adopts arc transition 3 between vertical crown plate and the horizontal crown plate, and radian radius R is confirmed through calculating. The reinforcing ring and the furnace shell plate are connected by adopting butt welding seams at the edges of the on-site holes. The vertical ring plate and the horizontal ring plate are formed by integral forging in a factory and are inseparable whole bodies.

By adopting the reinforcing ring for reinforcement, the stress amplitude of the hole-side plate is small, the deformation increment value is within an acceptable range, and the reinforcement effect is obvious; meanwhile, the novel reinforcing ring and the furnace shell plate adopt butt welding seams, welding operation and welding seam detection are both convenient, and the quality of on-site welding seams is ensured.

Claims

1. A novel reinforcing ring for opening a large hole on a large furnace shell is characterized in that: the furnace shell plate comprises a vertical ring plate and a horizontal ring plate, wherein the horizontal ring plate is arranged on an outer ring of the vertical ring plate, arc transition is adopted between the vertical ring plate and the horizontal ring plate, and a butt welding seam is adopted for connecting the reinforcing ring and the edge of an opening of a furnace shell plate in site.

2. The new reinforcing ring for large shell macropores according to claim 1, characterized in that: the vertical ring plate and the horizontal ring plate are integrally forged in a factory.