CN211866593U - Continuous casting tundish argon gas replacement device - Google Patents

Abstract

The utility model relates to a continuous casting tundish argon replacing device used for evacuating gas in a tundish and reducing secondary pollution of molten steel in the continuous casting production process of the steelmaking industry, which comprises an argon inlet pipe, a rubber hose communicated with a connector of an argon valve outlet metal pipe and the argon inlet pipe, the tail end of the argon gas inlet pipe is transversely communicated with an argon gas shunt pipe, the argon gas inlet pipe and the argon gas shunt pipe are communicated in a T shape, a plurality of argon gas outlet pipes are longitudinally communicated with the argon gas shunt pipe, the head parts of the argon gas outlet pipes are inwards bent into 90 degrees horizontally, argon gas blown into the tundish is distributed more uniformly in the tundish, the argon gas can directly reach the bottom of the tundish, air in the tundish is completely exhausted, after the tundish is stopped to be baked, the argon blowing device can be immediately placed on the tundish car to enter the tundish, the operation is safe and easy, the normal movement of the tundish car is not influenced, and the argon blowing replacement time of the tundish is prolonged.

Description

Continuous casting tundish argon gas replacement device

Technical Field

The utility model relates to a continuous casting tundish argon gas replacement device used for removing gas in a tundish and reducing secondary pollution of molten steel in the continuous casting production process in the steel-making industry.

Background

In the continuous casting production process in the steelmaking industry, the tundish stops baking until the ladle is cast, the inner cavity of the tundish is contacted with air, and after the first furnace molten steel of the ladle enters the tundish, the molten steel is contacted with the air in the tundish to cause secondary pollution of the molten steel, reduce the purity of the molten steel, and seriously cause water gap flocculation and continuous casting failure. According to the common method, a steel pipe is manually held or is carried above the tundish impact area to blow argon into the tundish, so that the problem of poor replacement effect exists, and the tundish is manually blown to be red hot and has large heat radiation.

Disclosure of Invention

An object of the utility model is to overcome exist among the prior art not enough and provide one kind and stop toasting the back in the middle of the package, more abundant to pouring into inert gas argon gas in the package in the middle of reaching the exhaust in the middle of the package air effect, reduce the molten steel pollution after the first stove molten steel of big package gets into the middle package, improve the continuous casting middle package argon gas replacement device of molten steel purity.

The purpose of the utility model is realized like this: the utility model provides a middle package argon gas replacement device, includes the argon gas intake pipe, switches on the rubber hose of the interface of argon gas valve outlet tubular metal resonator and argon gas intake pipe, has the argon gas shunt tubes at the terminal horizontal switch-on of argon gas intake pipe, and the argon gas intake pipe is T shape switch-on with the argon gas shunt tubes, and vertical switch-on has a plurality of first argon gas outlet pipes on the argon gas shunt tubes, and the head of first argon gas outlet pipe is buckled into 90 horizontally inwards.

The argon gas flow dividing pipe is characterized in that 1 carbon steel pipe is selected as the argon gas flow dividing pipe, a round hole is formed in the outer arc side of the middle part of the carbon steel pipe, an argon gas inlet pipe is welded on the round hole, the carbon steel pipe is inwards bent into 90 degrees along the vertical plane from the positions 700mm away from the end heads at the two ends of the carbon steel pipe, round holes are formed in the inner arc sides 750mm away from the bent positions at the two ends of the carbon steel pipe, and an argon gas outlet pipe in the vertical direction is welded on the round holes; the two ends of the carbon steel pipe bent into 90 degrees are respectively welded with a second argon gas outlet pipe in the horizontal direction along the horizontal direction on the end head of the first argon gas outlet pipe in the vertical direction, and the bent argon gas shunt pipe, the first argon gas outlet pipe and the second argon gas outlet pipe form an argon gas shunt system.

The length of the second argon gas outlet pipe is 45mm.

An argon valve is arranged on the tundish car.

The utility model has the advantages as follows: (1) the number of argon blowing pipelines is increased, and the argon blown into the tundish is distributed more uniformly in the tundish; (2) the length of the argon blowing device extending into the tundish cavity is prolonged, argon can directly reach the bottom of the tundish, and air in the tundish is thoroughly discharged; (3) the tundish car is provided with the argon blowing valve, and after the tundish stops baking, the argon blowing device can be immediately placed on the tundish car to enter the tundish, so that the operation is safe and easy, the normal movement of the tundish car is not influenced, and the argon blowing replacement time of the tundish is prolonged; the quantity of the argon gas outlet pipes and the depth of the argon gas outlet pipes penetrating into the tundish are increased to ensure the air replacement effect in the tundish, so that the oxygen absorption and nitrogen increase of the molten steel of the continuous casting first furnace and the secondary pollution of the molten steel are reduced, and the method has the advantages of low cost, convenience in use, safety and easiness in operation.

Drawings

Fig. 1 is a schematic structural view of the argon gas replacement device for the tundish of the present invention.

Fig. 2 is a cross-sectional view of a tundish argon gas replacement device of the utility model.

The labels in the figures are: 1. a rubber hose; 2. an argon inlet pipe; 3. argon gas shunt tubes, 4, first argon gas outlet duct.

Detailed Description

Example 1: as shown in fig. 1, the tundish argon gas replacement device comprises four parts, namely a rubber hose 1 for connecting a valve and an argon gas inlet pipe interface, an argon gas inlet pipe 2 for connecting the rubber hose and an argon gas shunting node, an argon gas shunting pipe 3 and a first argon gas outlet pipe 4 penetrating into a tundish.

The utility model provides a middle package argon gas replacement device, including argon gas intake pipe 2, the rubber hose 1 of the interface of switch-on argon gas valve outlet tubular metal resonator and argon gas intake pipe 2, it has argon gas shunt tubes 3 at the terminal horizontal switch-on of argon gas intake pipe 2, the argon gas intake pipe is T shape switch-on with the argon gas shunt tubes, the opposite vertical switch-on of going up the air vent at argon gas shunt tubes 3 has four first argon gas outlet pipes 4, the head of first argon gas outlet pipe 4 is buckled into 90 horizontally inwards.

Argon gas shunt tubes 3 select 1 carbon steel pipe as the argon gas shunt tubes, and open at carbon steel pipe middle part outer arc side has the round hole, and the welding has argon gas intake pipe 2 on this round hole. Carbon steel pipe is from all inwards buckling 90 along the perpendicular from its both ends end 700mm department, two round holes are opened respectively to 750 mm's inner arc side apart from this both ends department of buckling, the welding has the first argon outlet duct 4 of two vertical directions on these two round holes, buckle into 90 carbon steel pipe both ends overhead and the first argon outlet duct 4's of vertical direction end at both ends and weld the second argon outlet duct 5 that has the horizontal direction respectively along the horizontal direction, totally four second argon outlet ducts 5, above-mentioned curved argon shunt tubes 3 that makes forms argon gas shunt system with first argon outlet duct 4 and four second argon outlet ducts 5.

The length of the four second argon gas outlet pipes 5 is 45mm, and an argon gas valve is arranged on the tundish car.

Argon gas intake pipe 2 is used for connecting rubber hose and argon gas reposition of redundant personnel node, 2 terminal argon gas shunt tubes 3 and the first argon gas outlet duct 4 that uses as the vertical axis pipe that use of argon gas intake pipe and as violently manage form argon gas reposition of redundant personnel system, and wherein first argon gas outlet duct 4 is the bending pipe welding on argon gas shunt tubes 3 at argon gas reposition of redundant personnel system.

The utility model discloses rubber hose internal diameter 20mm, external diameter 30mm, long 3000mm, both ends adopt the iron wire to be fixed with the access connection of argon gas valve outlet metal pipe and argon gas intake pipe 2 respectively. The argon gas inlet pipe 2 is made of a carbon steel pipe with the inner diameter of 16mm, the outer diameter of 20mm and the length of 1300mm, one end of the carbon steel pipe is connected with the rubber hose, and the other end of the carbon steel pipe is connected with the argon gas shunt pipe 3. Selecting 1 carbon steel pipe with the length of about 3500mm as an argon gas shunt pipe, opening a circular hole at the outer arc side of the middle part of the carbon steel pipe, and bending the carbon steel pipe into 90 degrees from the positions 700mm away from the end heads at the two ends of the carbon steel pipe.

Argon gas shunt tubes 3 chooses 1 carbon steel pipe as the argon gas shunt tubes, it has the round hole to open at carbon steel pipe middle part outer arc side, the welding has argon gas intake pipe 2 on this round hole, carbon steel pipe all inwards bends into 90 along the perpendicular from 700mm department apart from its both ends end, open the round hole respectively apart from the inner arc side of 750mm of this both ends department of buckling, the welding has the first argon gas outlet duct 4 of vertical direction on this round hole, bend into 90 carbon steel pipe both ends overhead and the first argon gas outlet duct 4's of vertical direction end at both ends end and have welded the second argon gas outlet duct 5 of four horizontal directions respectively along the horizontal direction, above-mentioned curved argon gas shunt tubes 3 of making forms argon gas shunt system with first argon gas outlet duct 4 and second argon gas outlet duct 5. The length of the four second argon gas outlet pipes 5 is 45mm, and an argon gas valve is arranged on the tundish car.

Claims (4)

1. The utility model provides a middle package argon gas replacement device, includes the flexible rubber hose (1) of the interface of argon gas intake pipe (2), switch-on argon gas valve export tubular metal resonator and argon gas intake pipe (2), its characterized in that: the tail end of the argon gas inlet pipe (2) is transversely communicated with an argon gas shunt pipe (3), the argon gas inlet pipe and the argon gas shunt pipe are communicated in a T shape, a plurality of first argon gas outlet pipes (4) are longitudinally communicated on the argon gas shunt pipe (3), and the head parts of the first argon gas outlet pipes (4) are horizontally bent inwards to form 90 degrees.

2. A tundish argon gas displacement apparatus according to claim 1, characterised in that: argon gas shunt tubes (3) are selected 1 carbon steel pipe as the argon gas shunt tubes, open the round hole in carbon steel pipe middle part outer arc side, the welding has argon gas intake pipe (2) on this round hole, carbon steel pipe is all inwards buckled into 90 along the perpendicular from its both ends end 700mm department, open the round hole respectively apart from the inner arc side of this both ends department of buckling 750mm, the welding has first argon gas outlet duct (4) of vertical direction on this round hole, buckle into 90 carbon steel pipe both ends overhead and the end of the first argon gas outlet duct (4) of vertical direction at both ends and weld second argon gas outlet duct (5) that have the horizontal direction respectively along the horizontal direction, above-mentioned curved argon gas shunt tubes (3) and first argon gas outlet duct (4) and second argon gas outlet duct (5) that make form argon gas shunt systems.

3. A tundish argon gas displacement apparatus according to claim 2, characterised in that: the length of the second argon gas outlet pipe (5) is 45mm.

4. A tundish argon gas displacement apparatus according to claim 1, characterised in that: an argon valve is arranged on the tundish car.

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