CN110732662A

CN110732662A - blowing cooling device for plug rod core bar of tundish

Info

Publication number: CN110732662A
Application number: CN201911037818.XA
Authority: CN
Inventors: 赵建平; 王帅; 冯帅; 吴志杰; 席晓利
Original assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Current assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-01-31

Abstract

The invention relates to plug rod core bar blowing cooling devices for tundish, which belong to the technical field of continuous casting equipment in the metallurgical industry and comprise a bracket (1), a hard ventilation pipe (2), a soft ventilation pipe (3) and a switch (4), wherein the hard ventilation pipe (2) is fixed on the bracket (1), the end of the hard ventilation pipe extends to a plug rod (6), the opening of the hard ventilation pipe (2) faces to a plug rod core bar (5), the end of the hard ventilation pipe is communicated with the soft ventilation pipe (3), and the switch (4) is arranged on the soft ventilation pipe (3).

Description

blowing cooling device for plug rod core bar of tundish

Technical Field

The invention relates to an plug rod core bar blowing cooling device for a tundish, belonging to the technical field of continuous casting equipment in the metallurgical industry.

Background

The problem is mainly caused by that the core rod is heated in the continuous casting process, particularly the core rod part extending into the position below a tundish cover is easy to loosen and deform under the action of high temperature, the temperature of the core rod is reduced, blowing cooling can be designed for the plug rod of the tundish, but the plug rod of the tundish is positioned at the top of the tundish, has a smaller diameter ratio and is baked at the high temperature of molten steel, long-time blowing cooling can be realized for the core rod without depending on equipment at the periphery, and the device needs to be quickly installed and disassembled, so blowing cooling devices for the plug rod of the tundish need to be designed, the device is convenient to disassemble and assemble, and long-time stable blowing is realized.

Disclosure of Invention

The technical problem to be solved by the invention is to provide types of tundish stopper rod blowing cooling devices, which ensure that the devices can be conveniently assembled and disassembled and realize stable blowing for a long time.

The technical scheme for solving the technical problem is as follows:

A blowing cooling device for a plug rod core bar of a tundish comprises a bracket, a hard vent pipe, a soft vent pipe and a switch, wherein the hard vent pipe is fixed on the bracket, the end of the hard vent pipe extends to the plug rod, the opening of the hard vent pipe faces to the plug rod core bar, the end of the hard vent pipe is communicated with the soft vent pipe, and the switch is arranged on the soft vent pipe.

The bracket comprises a bracket base, a bracket front upright post, a bracket rear upright post, a locking ring, a locking nut, a fastening screw, a fastening wrench and a bolt, wherein the bracket base is a quadrilateral frame, the bracket front upright post and the bracket rear upright post are respectively two square main bodies and are respectively arranged on two opposite side frames of the bracket base, the bolt and the fastening screw are respectively assembled at two ends of the locking ring, the locking nut is assembled on the fastening screw, the head of the bolt is welded between the bracket rear upright posts, the locking nut is clamped at the outer side of the bracket front upright post and forms sets of fastening mechanisms with the locking ring and the fastening screw, and the outer end of the fastening screw is provided with a -shaped fastening wrench.

The inner diameter of the locking ring is 20-24 mm.

The side length of the frame of the bracket base is 50-70 mm.

The side lengths of the bracket front upright post and the bracket rear upright post are 30-50 mm.

The distance between the front upright post and the rear upright post of the bracket is 200 mm and 250 mm.

The side of the locking ring is welded and fixed with the screw of the bolt, and the other side is provided with a threaded hole which is assembled and connected with the fastening screw.

The device of the invention has the beneficial effects that: simple manufacturing process, low cost and convenient operation. Each component is dismantled conveniently, uses this device, can effectively guarantee the core bar cooling effect, prevents that the stopper stick core bar from becoming flexible, warping, causes and stops watering the accident.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a front view of the bracket of the present invention;

FIG. 3 is a top view of the bracket of the present invention;

FIG. 4 is a side view of the bracket of the present invention;

the labels in the figure are: the plug comprises a bracket 1, a hard ventilation pipe 2, a soft ventilation pipe 3, a switch 4, a plug rod core rod 5, a plug rod 6, a tundish cover 7, a bracket front upright post 8, a locking ring 10, a locking nut 11, a fastening screw rod 12, a fastening wrench 13, a bracket rear upright post 14, a bolt 15 and a bracket base 16.

Detailed Description

The invention is described in further detail with reference to the figures and the detailed description.

As shown in the attached drawing, the blowing cooling device for the plug rod core bar of the tundish comprises a bracket 1, a hard vent pipe 2, a soft vent pipe 3 and a switch 4, wherein the hard vent pipe 2 is fixed on the bracket 1, the end extends to a plug rod 6, the opening of the hard vent pipe 2 faces to a plug rod core bar 5, the end is communicated with the soft vent pipe 3, and the switch 4 is arranged on the soft vent pipe 3.

The bracket 1 comprises a bracket base 16, a bracket front upright post 8, a bracket rear upright post 14, a locking ring 10, a locking nut 11, a fastening screw 12, a fastening wrench 13 and a bolt 15, wherein the bracket base 16 is a quadrilateral frame, the bracket front upright post 8 and the bracket rear upright post 14 are respectively two square bodies and are respectively arranged on two opposite side frames of the bracket base 16, the bolt 15 and the fastening screw 12 are respectively assembled at two ends of the locking ring 10, the locking nut 11 is assembled on the fastening screw 12, the head of the bolt 15 is welded between the upright posts of the bracket rear upright post 14, the locking nut 11 is clamped at the outer side of the bracket front upright post 8 to form sets of fastening mechanisms with the locking ring 10 and the fastening screw 12, the outer end of the fastening screw 12 is provided with a -shaped fastening wrench 13, the inner diameter of the locking ring 10 is 22 mm, the frame length of the bracket base 16 is 60 mm, the side length of the bracket front upright post 8 and the bracket rear upright post 14 is 40 mm, the distance between the bracket front upright post 8 and the bracket rear upright post 14 is 220 mm, the side length of the locking ring is welded and the side of the bolt , the.

The hard ventilating pipe 2 is made of a steel pipe with the diameter of 16 mm, the other side is connected with the soft ventilating pipe 3, the soft ventilating pipe 3 is connected without being directly connected with the cooling medium valve , the air pipe is convenient to move and replace, and the other side of the soft ventilating pipe is connected with the cooling medium air valve .

When the operation is needed, the device is installed on the tundish cover 7, after the installation is finished, the switch 4 is turned on, the cooling medium air valve is adjusted to blow air with proper air volume, and the stopper rod core rod 5 is cooled.

The invention has simple manufacturing process, low components, convenient operation and convenient disassembly of all components, and can effectively ensure the cooling effect of the core rod and prevent the stopper rod from loosening and deforming to cause the stop casting accident by using the device.

After a certain steel mill adopts the device, the continuous use result of 1 year shows that the device can effectively solve the problems of looseness and deformation of the plug rod core rod, and the looseness and deformation times of the plug rod core rod are 0 in the period, so the device has pushing value.

Claims

1, kind of middle package stopper stick core bar blast cooling device, its characterized in that includes bracket (1), hard ventilation pipe (2), soft ventilation pipe (3), switch (4), hard ventilation pipe (2) are fixed on bracket (1), end stretches to on stopper stick (6), the opening of hard ventilation pipe (2) is towards stopper stick core bar (5), end and soft ventilation pipe (3) intercommunication in addition, switch (4) set up on soft ventilation pipe (3).

2. The blowing cooling device for the plug rod core bar of the tundish according to claim 1, wherein the bracket (1) comprises a bracket base (16), a bracket front upright post (8), a bracket rear upright post (14), a locking ring (10), a locking nut (11), a fastening screw (12), a fastening wrench (13) and a bolt (15), the bracket base (16) is a quadrilateral frame, the bracket front upright post (8) and the bracket rear upright post (14) are respectively two quadrilateral bodies and are respectively arranged on two opposite side frames of the bracket base (16), the bolt (15) and the fastening screw (12) are respectively assembled at two ends of the locking ring (10), the locking nut (11) is assembled on the fastening screw (12), the head of the bolt (15) is welded between the bracket rear upright posts (14), the locking nut (11) is clamped at the outer side of the bracket front upright post (8) to form an sleeve fastening mechanism with the locking ring (10) and the fastening screw (12), and the outer end of the fastening screw (12) is provided with the -shaped fastening wrench (13).

3. A plug rod blow cooling device according to claim 2, characterized in that the inner diameter of the locking ring (10) is 20-24 mm.

4. A plug core rod blast cooling device for a tundish according to claim 2, characterised in that the frame side of the tray base (16) is 50-70 mm long.

5. A plug core rod blast cooling device of a tundish plug according to claim 2, characterised in that the side length of the bracket front pillar (8) and the bracket rear pillar (14) is 30-50 mm.

6. The plug core rod blowing cooling device of claim 2, characterized in that the distance between the bracket front pillar (8) and the bracket rear pillar (14) is 200 mm and 250 mm.

7. A blowing cooler for a plug rod of a tundish according to claim 2, wherein the locking ring (10) is welded to the screw of the bolt (15) on one side and a threaded hole is formed on the other side to fit with the fastening screw (12).