CN212929121U

CN212929121U - High temperature ingot casting heating furnace body thermal short circuit connecting device

Info

Publication number: CN212929121U
Application number: CN202021868496.1U
Authority: CN
Inventors: 李国良; 孙跃锋; 王胜利; 马金伟; 王世超; 白冰洋; 刘杰飞; 郅一昌; 张小辉; 张闯; 雷海波; 焦增钢
Original assignee: Henan Zhongfu High Precision Aluminum Material Co ltd
Current assignee: Henan Zhongfu High Precision Aluminum Material Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-04-09
Anticipated expiration: 2030-08-29

Abstract

The utility model discloses a high temperature ingot casting heating furnace body thermal short circuit connecting device, which comprises a furnace body, the lateral wall of furnace body sets up the through-hole, the outside of furnace body is equipped with the outside sleeve pipe in through-hole department, be equipped with the inside sleeve pipe in the outside sleeve pipe, the one end of outside sleeve pipe is fixed at the outer wall of furnace body through the welding, the other end of outside sleeve pipe is equipped with the second flange, one end of inside sleeve pipe stretches into in the through-hole, the outer wall of inside sleeve pipe is not contacted with the through-hole, the other end of inside sleeve pipe is equipped with the first flange, be equipped with the heat preservation in the clearance between outside sleeve; this hot short circuit connecting device of high temperature ingot casting heating furnace body not only can prevent the internal calorific loss of furnace, also can prevent that the condition of pipeline fracture gas leakage from taking place, and overall structure is stable, and the leakproofness is strong, is fit for using widely.

Description

High temperature ingot casting heating furnace body thermal short circuit connecting device

Technical Field

The utility model relates to an aluminum alloy ingot casting technical field especially relates to a hot short circuit connecting device of high temperature ingot casting heating furnace body.

Background

In the normal operation process of the aluminum alloy ingot casting heating furnace, the temperature of a hearth is high (about 600 ℃), components such as a cooling air pipe, a smoke exhaust pipeline and the like arranged on a furnace body are directly connected with the hearth and the outside of the furnace body, and the components are all made of steel components, so that the heat of the installation position is directly conducted to the outer wall of the furnace body to form a thermal short circuit point; the direct embodiment of the thermal short-circuit point is that the external temperature of the furnace body at the installation position of the equipment part is higher, so that the heat loss of the hearth is serious; due to the long-term existence of the thermal short-circuit point, the welding seam cracks under the condition change of thermal expansion and cold contraction at the position, and further the heat loss of a hearth is caused; because the heating furnace normally operates in a micro-positive pressure (less than or equal to 15mbar), the air leakage phenomenon exists at the cracking position of the welding seam, and the great potential safety hazard also exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem and providing a high temperature ingot heating furnace body thermal short circuit connecting device that not only can prevent calorific loss in the furnace body, also can prevent that the condition of pipeline fracture gas leakage from taking place, and overall structure is stable, and the leakproofness is strong.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a hot short circuit connecting device of high temperature ingot casting heating furnace body, includes the furnace body, the through-hole is seted up to the lateral wall of furnace body, the outside of furnace body is equipped with outside sleeve pipe in through-hole department, be equipped with inside sleeve pipe in the outside sleeve pipe, welded fastening is passed through to outside sheathed tube one end at the outer wall of furnace body, outside sheathed tube other end is equipped with the second flange, inside sheathed tube one end stretches into in the through-hole, inside sheathed tube outer wall and through-hole contactless, inside sheathed tube other end is equipped with first flange, be equipped with the heat preservation in the clearance between outside sleeve pipe and the inside sleeve pipe.

Preferably, the cooling air pipe is further included, a third flange is arranged at the end part of the cooling air pipe, and the cooling air pipe is connected with the inner sleeve through the third flange.

Preferably, a fan and a valve are arranged at the port of the cooling air pipe.

Preferably, the first flange, the second flange and the third flange are fixedly connected through fastening bolts, and sealing layers are arranged between the first flange and the second flange and between the second flange and the third flange.

Preferably, the sealing layer and the heat-insulating layer are both made of aluminum silicate fiber materials.

Preferably, the positioning centers of the cooling air pipe, the external sleeve and the internal sleeve are the centers of the through holes of the side wall of the furnace body.

The utility model discloses a high temperature ingot casting heating furnace body thermal short circuit connecting device, which comprises a furnace body, the lateral wall of furnace body sets up the through-hole, the outside of furnace body is equipped with the outside sleeve pipe in through-hole department, be equipped with the inside sleeve pipe in the outside sleeve pipe, the one end of outside sleeve pipe is fixed at the outer wall of furnace body through the welding, the other end of outside sleeve pipe is equipped with the second flange, the one end of inside sleeve pipe stretches into in the through-hole, the outer wall of inside sleeve pipe is not contacted with the through-hole, the other end of inside sleeve pipe is equipped with the first flange, be equipped with the heat preservation in the clearance between; this hot short circuit connecting device of high temperature ingot casting heating furnace body not only can prevent the internal calorific loss of furnace, also can prevent that the condition of pipeline fracture gas leakage from taking place, and overall structure is stable, and the leakproofness is strong, is fit for using widely.

Drawings

Fig. 1 is the structure schematic diagram of the utility model relates to a high temperature ingot heating furnace body thermal short circuit connecting device.

Fig. 2 is an enlarged schematic view of a point a in fig. 1 according to the present invention.

In the figure: 1. a furnace body; 2. a through hole; 3. an inner sleeve; 31. a first flange; 4. an outer sleeve; 41. a second flange; 5. cooling the air pipe; 51. a third flange; 6. a sealing layer; 7. fastening a bolt; 8. a fan; 9. a valve; 10. and (7) an insulating layer.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The attached drawings are simplified schematic diagrams, and merely illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

Referring to fig. 1-2, a furnace body thermal short circuit connecting device of a high-temperature ingot casting heating furnace comprises a furnace body 1, an inner wall of the furnace body 1 is provided with an aluminum silicate fiber cotton heat insulation layer, a through hole 2 is formed in a side wall of the furnace body 1, an outer sleeve 4 is arranged at the through hole 2 at the outer side of the furnace body 1, an inner sleeve 3 is arranged in the outer sleeve 4, one end of the outer sleeve 4 is fixed on the outer wall of the furnace body 1 through welding, the other end of the outer sleeve 4 is provided with a second flange 41, one end of the inner sleeve 3 extends into the through hole 2, the outer wall of the inner sleeve 3 is not in contact with the through hole 2, the other end of the inner sleeve 3 is provided with a first flange 31, a heat insulation layer 10 is arranged in a gap between the outer sleeve 4 and the inner sleeve 3, the heat insulation effect is, the tip of cooling tuber pipe 5 is equipped with third flange 51, cooling tuber pipe 5 is connected with inside sleeve pipe 3 through third flange 51, aperture ratio inside sleeve pipe 3 diameter of through-hole 2 is 60mm big, the inside sleeve pipe 3 diameter of 4 diameter ratios of outside sleeve pipe is 160mm big, cooling tuber pipe 5 diameter is unanimous with inside sleeve pipe 3 diameter, the port department of cooling tuber pipe 5 is equipped with fan 8 and valve 9, opens fan 8 when needing the cooling down in furnace body 1, lets in the cooling air and opens valve 9 to furnace body 1, first flange 31, second flange 41 pass through fastening bolt 7 fixed connection with third flange 51, all be equipped with sealing layer 6 between first flange 31 and the second flange 41 and between second flange 41 and the third flange 51, sealing layer 6 is the preparation of aluminium silicate fibre material with heat preservation 10 and forms, the thickness 5mm of sealing layer 6, the thickness of the cooling air pipe is 2-3mm after being compressed by a flange, the cooling air pipe is used for heat insulation and sealing, excessive heat conduction is avoided, and the positioning centers of the cooling air pipe 5, the external sleeve 4 and the internal sleeve 3 are the centers of the through holes 2 of the side wall of the furnace body 1.

The furnace body 1 is made of common steel Q235, the cooling air pipe 5, the outer sleeve 4 and the inner sleeve 3 outside the furnace body 1 are made of SUS321 stainless steel, and the alloy material can still keep good corrosion resistance under the condition of chromium carbide precipitation when the temperature reaches 427-816 ℃; because titanium is added in the components, the SUS321 stainless steel can keep better stability under the condition of forming chromium carbide, and the stainless steel has great advantages in working under high-temperature environment. Compared with the traditional liner plate material 304 stainless steel, the SUS321 stainless steel has better ductility, stress fracture resistance and stable working performance in a high-temperature environment.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a hot short circuit connecting device of high temperature ingot casting heating furnace body, includes furnace body (1), its characterized in that: through-hole (2) are seted up to the lateral wall of furnace body (1), the outside of furnace body (1) is equipped with outside sleeve pipe (4) in through-hole (2) department, be equipped with inside sleeve pipe (3) in outside sleeve pipe (4), welded fastening is passed through at the outer wall of furnace body (1) to the one end of outside sleeve pipe (4), the other end of outside sleeve pipe (4) is equipped with second flange (41), the one end of inside sleeve pipe (3) stretches into in through-hole (2), the outer wall and through-hole (2) contactless of inside sleeve pipe (3), the other end of inside sleeve pipe (3) is equipped with first flange (31), be equipped with heat preservation (10) in the clearance between outside sleeve pipe (4) and inside sleeve pipe (3).

2. The high-temperature ingot casting heating furnace body thermal short circuit connecting device according to claim 1, characterized in that: the cooling air pipe is characterized by further comprising a cooling air pipe (5), a third flange (51) is arranged at the end part of the cooling air pipe (5), and the cooling air pipe (5) is connected with the inner sleeve (3) through the third flange (51).

3. The high-temperature ingot casting heating furnace body thermal short circuit connecting device according to claim 2, characterized in that: and a fan (8) and a valve (9) are arranged at the port of the cooling air pipe (5).

4. The high-temperature ingot casting heating furnace body thermal short circuit connecting device according to claim 2, characterized in that: the first flange (31), the second flange (41) and the third flange (51) are fixedly connected through fastening bolts (7), and sealing layers (6) are arranged between the first flange (31) and the second flange (41) and between the second flange (41) and the third flange (51).

5. The high-temperature ingot casting heating furnace body thermal short circuit connecting device according to claim 4, characterized in that: the sealing layer (6) and the heat-insulating layer (10) are both made of aluminum silicate fiber materials.

6. The high-temperature ingot casting heating furnace body thermal short circuit connecting device according to claim 2, characterized in that: and the positioning centers of the cooling air pipe (5), the external sleeve (4) and the internal sleeve (3) are the centers of the side wall through holes (2) of the furnace body (1).