CN215315576U

CN215315576U - Drainage processing system of conticaster tundish overflow molten steel

Info

Publication number: CN215315576U
Application number: CN202121759384.7U
Authority: CN
Inventors: 王莉君; 张永林
Original assignee: Anhui Jiangchu Technology Co ltd
Current assignee: Anhui Jiangchu Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-12-28
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a drainage treatment system for overflow molten steel of a tundish of a continuous casting machine, belonging to the field of steelmaking and continuous casting in the metallurgical industry. The overflow tank is arranged on the intermediate tank car, the overflow tank is positioned below the discharge port of the intermediate tank, the overflow tank extends along the direction far away from the rotary table and the steel ladle on one side of the intermediate tank car, the length of the overflow tank extends beyond the corresponding position below the steel ladle, the tail end of the overflow tank is correspondingly connected with the overflow tank, and the position of the overflow tank avoids the lower positions of the rotary table and the steel ladle. The utility model overcomes the defects that the arrangement of the overflow tank causes the prolonging of the pouring clearance time and the influence on the production efficiency in the prior art, and can lift the overflow tank filled with molten steel without rotating the ladle turret away from the working position, thereby avoiding the occupation of prolonging the continuous pouring clearance time of the molten steel, avoiding the influence on the continuous pouring of the molten steel and effectively improving the production efficiency.

Description

Drainage processing system of conticaster tundish overflow molten steel

Technical Field

The utility model relates to the technical field of steelmaking and continuous casting in the metallurgical industry, in particular to a drainage treatment system for overflow molten steel of a tundish of a continuous casting machine.

Background

The tundish of the continuous casting machine is positioned between the ladle and the crystallizer and is used for receiving molten steel of the ladle and injecting the molten steel into the crystallizer. The technical requirements for the tundish are pressure reduction and flow stabilization, shunt continuous casting, impurity removal and molten steel protection. In addition, in consideration of the fact that the liquid level rises when the steel is tapped from the ladle and the molten steel is unstably poured in an accident state, and the liquid level exceeds the working liquid level of the tundish, excessive molten steel needs to be overflowed. The molten steel reaching the overflow liquid level of the tundish flows into the overflow tank along the overflow outlet of the tundish to be stored. In the traditional technological arrangement of the continuous casting machine, the overflow tank is placed under the casting position of the ladle rotary table of the continuous casting machine according to the principles of compact structure and adjacent position function. When the overflow tank is about to be filled with molten steel, the ladle turret needs to be quickly rotated away from the working position in a molten steel continuous pouring gap, a space above the position where the overflow tank is placed is made, a workshop travelling crane lifts the overflow tank to be transported out of a production line, and then a new empty overflow tank is replaced. Such operations often lengthen the continuous casting gap time, compelling to lengthen the continuous casting gap time, reduce the amount of tapped steel, reduce the production efficiency, and reduce the profit of enterprises.

In recent years, various large iron and steel enterprises make a great deal of beneficial innovation and exploration in the aspect of steel-making process improvement and make great progress. The drawing speed of the continuous casting machine is improved compared with the prior art, and steel enterprises hope that the continuous casting machine shows the optimal efficiency utilization, the highest production efficiency and the lowest steelmaking cost in each link. Therefore, the process arrangement of each device of the continuous casting machine is innovated and optimized, the more efficient molten steel remaining treatment is realized, and the attention is paid.

Through retrieval, the Chinese patent application number: 2014207191880, the name of invention creation is: the accident swinging groove comprises a refractory material accommodating groove and a movable swinging groove frame, wherein the refractory material accommodating groove is arranged at the top of the movable swinging groove frame; before casting of a continuous casting machine or in an accident maintenance process, the refractory containing tank moves to the position below a metering nozzle of a tundish through a movable groove swinging frame, and drainage sand or molten steel flowing out of the metering nozzle of the tundish collects and transfers through the refractory containing tank moving to the position below the metering nozzle. This application is not suitable for solving the above mentioned problems and there is room for further optimization in practice.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects that the arrangement of an overflow tank causes the prolonging of the pouring clearance time and the influence on the production efficiency in the prior art, and provides a drainage treatment system for overflow molten steel of a tundish of a continuous casting machine.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses a drainage processing system for molten steel overflowing from a tundish of a continuous casting machine, which comprises an overflow groove arranged on a tundish car, wherein the overflow groove is positioned below a discharge port of the tundish car and used for receiving the discharged molten steel, the overflow groove extends along the direction far away from a rotary table and a steel ladle at one side of the tundish car, the length of the overflow groove extends beyond the corresponding position below the steel ladle, the tail end of the overflow groove is correspondingly connected with the overflow tank and used for draining the molten steel into the overflow tank, and the position of the overflow tank avoids the lower positions of the rotary table and the steel ladle.

Furthermore, the overflow trough is formed by welding and enclosing steel plates, and the cross section of the overflow trough is U-shaped or trough-shaped.

Further, the height of the bottom wall of the overflow launder gradually decreases in the direction of approaching the overflow tank.

Furthermore, the overflow groove is arranged on the side of the intermediate tank car through a fixed support, the fixed support adopts a steel plate welding piece, a plurality of groups of horizontal steel plates and connecting steel plates are welded to form a triangular support, and the overflow groove is arranged on the horizontal steel plate of the fixed support and is fixedly connected through bolts.

Furthermore, the length extending direction of the overflow groove is parallel to the walking direction of the intermediate tank car, and the length of the overflow groove exceeds the side surface of the intermediate tank car.

Further, a heat insulating refractory is laid on the inner wall surface of the overflow tank.

Furthermore, the top of the overflow groove is also provided with a cover plate for preventing heat radiation, and the cover plate is provided with an opening avoiding area for receiving molten steel discharged from the discharge port.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) according to the drainage processing system, the overflow tanks with the long-distributed side edges are arranged, overflow molten steel is drained to the lateral position of the revolving platform of the continuous casting machine, the overflow tanks are correspondingly arranged at the side edge positions and receive the overflow molten steel, so that the time correlation does not occur and does not affect each other in the subsequent lifting process of the overflow tanks and the continuous casting process of the molten steel, the adverse effect of influencing the continuous casting time of the molten steel is effectively avoided, the steel tapping amount is improved, and the profit of steel enterprises is increased.

(2) According to the drainage treatment system, the length extension of the overflow groove has a certain gradient, so that molten steel can be drained conveniently; and the top of the overflow groove is also provided with a cover plate for preventing heat radiation so as to further ensure the production safety.

Drawings

FIG. 1 is a schematic front view of a conventional overflow tank in a working state arrangement structure;

FIG. 2 is a schematic top view of a conventional overflow tank arrangement in a working state;

FIG. 3 is a schematic front view of the drainage treatment system of the present invention;

fig. 4 is a schematic top view of the drainage treatment system of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a ladle; 2. a turntable; 3. a tundish car; 4. an intermediate tank; 5. an overflow tank; 6. an outlet port; 7. an overflow trough.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

Referring to fig. 1 and 2, the conventional overflow tank 5 arrangement structure of a continuous casting machine is shown, and based on the principle of compact structure and adjacent position function, the overflow tank 5 is directly placed under the pouring position of the rotary table 2, namely, directly under the corresponding ladle 1, and the discharge port 6 of the intermediate tank 4 is directly above the overflow tank 5 to directly receive molten steel. So set up, when overflow tank 5 is about to be full, will rotate revolving platform 2 away at molten steel pouring clearance rapidly, rotate 90 and let out the upper space of overflow tank 5 below to adopt the workshop driving to lift overflow tank 5 and carry away and change empty overflow tank 5 of new. The efficiency of such operation is significantly affected.

As shown in fig. 3 and 4, the drainage processing system layout structure of the present embodiment includes an overflow trough 7 disposed on the tundish car 3, the overflow trough 7 is located below the discharge port 6 of the tundish 4 and is used for receiving the discharged molten steel, the overflow trough 7 extends along a direction away from the turntable 2 and the ladle 1 on one side of the tundish car 3, and has a length extending beyond a corresponding position below the ladle 1, the end of the overflow trough 7 is correspondingly connected to the overflow tank 5 and is used for draining the molten steel into the overflow tank 5, and the overflow tank 5 is located at a position avoiding the lower positions of the turntable 2 and the ladle 1.

Specifically, in this embodiment, the overflow chute 7 is installed on a low-leg beam of the intermediate tank car 3, and is installed on the side of the intermediate tank car 3 through a fixing bracket, the fixing bracket adopts a steel plate welding part, a triangular bracket is formed by welding multiple groups of horizontal steel plates and connecting steel plates, and the overflow chute 7 is placed on the horizontal steel plate of the fixing bracket and is fixed through bolt connection. The overflow trough 7 is formed by welding and enclosing steel plates, the cross section of the overflow trough is U-shaped or groove-shaped, and heat insulation refractory materials are built on the inner wall surface of the overflow trough 7. The height of the bottom wall of the overflow groove 7 is gradually reduced along the direction close to the overflow tank 5 to form a certain gradient, which is beneficial to draining molten steel. As shown in fig. 4, the length extension direction of the overflow chute 7 is parallel to the traveling direction of the tundish car 3, and the length exceeds the side surface of the tundish car 3. Furthermore, the top of the overflow groove 7 is also provided with a cover plate for preventing heat radiation, and the cover plate is provided with an opening avoiding area for receiving molten steel discharged from the discharge port 6, so that the production safety is further ensured.

This embodiment is through setting up overflow launder 7 that the side elongated distributes, lateral position to conticaster revolving platform 2 with the molten steel drainage of overflow, overflow tank 5 also corresponds to arrange in this side position, receive the molten steel of overflow, and the walking that requires do not influence tank wagon 3 in the middle of arranging of placing of overflow tank 5, so make follow-up continuous casting process that lifts by crane overflow tank 5 and molten steel no longer take place time and correlate, each other does not influence, thereby effectively avoid the adverse effect that influences the continuous casting time of molten steel, improve the steel output, increase iron and steel enterprise's profit.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides a drainage processing system of conticaster pans overflow molten steel which characterized in that: the overflow tank is characterized by comprising an overflow tank (7) arranged on a tundish car (3), wherein the overflow tank (7) is positioned below a discharge port (6) of a tundish (4) and used for receiving discharged molten steel, the overflow tank (7) extends along the direction away from a rotary table (2) and a steel ladle (1) on one side of the tundish car (3), the length of the overflow tank extends beyond the position corresponding to the lower part of the steel ladle (1), the tail end of the overflow tank (7) is correspondingly connected with an overflow tank (5) and used for draining the molten steel into the overflow tank (5), and the position of the overflow tank (5) is kept away from the position below the rotary table (2) and the steel ladle (1).

2. The system for draining the overflow molten steel of the tundish of the continuous casting machine according to claim 1, wherein: the overflow groove (7) is formed by welding and enclosing steel plates, and the cross section of the overflow groove is U-shaped or groove-shaped.

3. The system for draining the overflow molten steel of the tundish of the continuous casting machine according to claim 1, wherein: the height of the bottom wall of the overflow groove (7) is gradually reduced along the direction close to the overflow tank (5).

4. The system for draining the overflow molten steel of the tundish of the continuous casting machine according to claim 1, wherein: the overflow groove (7) is arranged on the side edge of the intermediate tank car (3) through a fixed support, the fixed support is a steel plate welding piece, a triangular support is formed by welding a plurality of groups of horizontal steel plates and connecting steel plates, and the overflow groove (7) is arranged on the horizontal steel plate of the fixed support and is fixedly connected through bolts.

5. The system for draining overflow molten steel of a tundish of a continuous casting machine according to claim 3, wherein: the length extension direction of the overflow groove (7) is parallel to the walking direction of the intermediate tank car (3), and the length of the overflow groove exceeds the side surface of the intermediate tank car (3).

6. The system for draining the overflow molten steel of the tundish of the continuous casting machine according to claim 2, wherein: the inner wall surface of the overflow trough (7) is built with heat insulation refractory material.

7. The system for draining the overflow molten steel of the tundish of the continuous casting machine according to any one of claims 1 to 6, wherein: the top of the overflow groove (7) is also provided with a cover plate for preventing heat radiation, and the cover plate is provided with an opening avoiding area for receiving molten steel discharged from the discharge port (6).