Tundish preheating joint for smelting high-strength acid-resistant steel

Abstract

A tundish preheating connector for smelting high-strength acid-resistant steel comprises a base, a connecting frame and a tee joint are fixed to the upper portion of the base, a sleeve is fixed to the top of the connecting frame, and two inlets of the tee joint are each connected with a preheating pipeline. The other end of the metal pipe is a connector, the metal pipe penetrates into the sleeve, the radial square thread of the sleeve is connected with the abutting bolt, and the inner end of the abutting bolt extends to the inner side of the sleeve from the outer side of the sleeve. A second inlet of the tee is connected with a second hose; a first valve is arranged on the metal pipe, and a second valve is arranged on the second inlet. Compared with the prior art, the utility model has the technical effects that the three-way valve is arranged, and two inlets of the three-way valve are respectively connected with a set of preheating pipeline, so that the requirements of two water gaps can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel billet processing, and particularly relates to a tundish preheating joint for smelting high-strength acid-resistant steel. Background Art

[0002] During the billet processing process, molten steel from the tundish flows into the crystallizer, where it solidifies and forms the billet. The tundish needs to be preheated before use. Preheating involves drawing air outward from the nozzle, allowing hot air from upstream to continuously enter the tundish, raising its temperature.

[0003] like Figure 1 The tundish 90 is of two types: integral and split, with an immersed nozzle 91 and a sizing nozzle 92 respectively. Because the sizes of the two nozzles and the distances from the bottom of the tundish are different, the shapes and materials of the exhaust joints connected to the nozzles are also different. Therefore, two sets of exhaust pipes need to be prepared, which is more troublesome. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to design a tundish preheating joint for smelting high-strength acid-resistant steel so that a set of exhaust pipelines can meet the needs of two types of water nozzles.

[0005] The technical solution of the utility model is specifically as follows:

[0006] A tundish preheating joint for smelting high-strength acid-resistant steel comprises a base, a connecting frame and a tee fixed above the base, a sleeve fixed on the top of the connecting frame, and two inlets of the tee respectively connected to a set of preheating pipelines: the first inlet of the tee is connected to one end of a first hose, the other end of the first hose is connected to one end of a metal pipe, the other end of the metal pipe is a joint, the metal pipe is passed through the sleeve, the radial square thread of the sleeve is connected to a tightening bolt, and the inner end of the tightening bolt extends from the outside of the sleeve to the inside of the sleeve; the second inlet of the tee is connected to the second hose; a first valve is provided on the metal pipe, and a second valve is provided on the second inlet.

[0007] The base is fixed to the tee by welding a connecting plate, and the upper surface of the connecting plate is an arc surface.

[0008] Compared with the prior art, the technical effect of the present invention is that the present invention is provided with a tee, the two inlets of which are respectively connected to a set of preheating pipelines, which can meet the requirements of two water outlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the prior art.

[0010] Figure 2 It is a schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0012] like Figure 2 A tundish preheating joint for smelting high-strength acid-resistant steel includes a base 10, a connecting frame 11 and a tee 20 fixed above the base 10, a sleeve 12 fixed on the top of the connecting frame 11, and two inlets of the tee 20 are respectively connected to a set of preheating pipelines:

[0013] The first inlet 21 of the tee 20 is connected to one end of the first hose 40, the other end of the first hose 40 is connected to one end of the metal tube 41, the other end of the metal tube 41 is a joint 42, the metal tube 41 is passed through the sleeve 12, the radial square thread of the sleeve 12 is connected to the tightening bolt 13, and the inner end of the tightening bolt 13 extends from the outside of the sleeve 12 to the inside of the sleeve 12.

[0014] The second inlet 22 of the tee 20 is connected to a second hose 30 .

[0015] A first valve 43 is provided on the metal tube 41 , and a second valve 31 is provided on the second inlet 22 .

[0016] In order to fix firmly, the base 10 is fixed to the tee 20 by welding through the connecting plate 15, and the upper surface of the connecting plate 15 is an arc surface.

[0017] like Figure 1-2 , its working principle is:

[0018] S1. Cooperate with the sizing nozzle: Close the second valve 31, open the first valve 43, loosen the fastening bolt 13, pull the metal tube 41 upwards, connect the joint 42 to the sizing nozzle, tighten the fastening bolt 13, fix the metal tube 41 and the sleeve 12 together, and then connect the outlet of the tee 20 to the preheating pipeline to carry out preheating.

[0019] S2. Cooperate with the immersed water outlet: close the first valve 43, open the second valve 31, connect the outer end of the second hose 30 to the immersed water outlet, and then connect the outlet of the tee 20 to the preheating pipeline for preheating.

[0020] Features of this application:

[0021] S1. The sizing nozzle is close to the bottom of the tundish and the temperature is high, so a hard pipe (metal pipe 41) must be used. However, the hard pipe needs to be moved up and down during installation and is relatively heavy. Therefore, a tightening bolt is provided for fixing. The position of the first inlet 21 and the metal pipe 41 is matched conveniently by bending the hose.

[0022] S2. The immersed nozzle is far away from the bottom of the tundish and has a lower temperature. A hose (the second hose 30) can be used. The hose can be bent appropriately, which is more convenient.

[0023] For other contents, please refer to the prior art.

[0024] The above description is only the preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A tundish preheating joint for smelting high-strength acid-resistant steel, comprising a base (10), a connecting frame (11) and a tee (20) fixed above the base (10), characterized in that: The top fixing sleeve (12) of the connecting frame (11) and the two inlets of the tee (20) are respectively connected to a set of preheating pipelines: The first inlet (21) of the tee (20) is connected to one end of the first hose (40), the other end of the first hose (40) is connected to one end of the metal tube (41), the other end of the metal tube (41) is a joint (42), the metal tube (41) is inserted into the sleeve (12), the radial square thread of the sleeve (12) is connected to the tightening bolt (13), and the inner end of the tightening bolt (13) extends from the outer side of the sleeve (12) to the inner side of the sleeve (12); The second inlet (22) of the tee (20) is connected to the second hose (30); A first valve (43) is provided on the metal tube (41), and a second valve (31) is provided on the second inlet (22).

2. The tundish preheating joint for smelting high-strength acid-resistant steel according to claim 1, characterized in that: The base (10) is welded to the tee (20) via the connecting plate (15), and the upper surface of the connecting plate (15) is an arc surface.

Images