Inert gas protection hydraulic steel pouring mechanism integrated device

Abstract

The utility model discloses an inert gas protection hydraulic steel pouring mechanism integrated device which comprises a base (1) installed on a steel ladle, a double-layer fence (2) arranged on the base (1), an annular gas pipe (3) arranged in an interlayer (21) of the double-layer fence (2), a gas outlet part arranged on the surface of the annular gas pipe (3), a gas inlet pipe (31) arranged on the annular gas pipe (3), and a gas outlet part arranged on the gas inlet pipe (31). Inert gas is introduced into the annular gas pipe (3) through the gas inlet pipe (31) and is discharged from the gas outlet part to form an annular gas curtain. The utility model has the characteristics of good air isolation effect and low possibility of being damaged and blocked.

Description

Technical Field

[0001] The utility model relates to an inert gas protection device, in particular to an integrated device of an inert gas protection hydraulic steel pouring mechanism. Background Art

[0002] In slab pouring, for the pouring of special steel, during the molten steel pouring process, harmful gases such as H, O, and N in the air are likely to enter the casting ingot along with the molten steel flow, greatly affecting the product quality and performance. Therefore, currently during pouring, generally an argon inert gas protection device needs to be configured to reduce the situation of harmful gases such as H, O, and N in the air entering the casting ingot along with the molten steel flow.

[0003] The existing argon inert gas protection device uses an external-mounted argon protection ring. Before steel pouring, the argon protection ring is hung at the bottom of the ladle and removed after the steel pouring ends. The structure is simple. However, there are the following problems: 1. The air outlet is single, the argon sealing effect is poor, and the air isolation effect is not good; 2. The operation is cumbersome, and the situation of unstable hanging and falling of the hook is likely to occur; 3. The external hanging position is prone to deviation, not easy to be placed correctly, and is likely to be damaged by molten steel and unable to be used normally; 4. During molten steel pouring, part of the molten steel will also splash upward onto the argon ring, resulting in slag accumulation and blockage of the argon ring. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrated device of an inert gas protection hydraulic steel pouring mechanism. The utility model has the characteristics of good air isolation effect and not easy to be damaged and blocked.

[0005] The technical solution of the utility model: An integrated device of an inert gas protection hydraulic steel pouring mechanism includes a base installed on a ladle. A double-layer enclosure is provided on the base. An annular air pipe is provided in the sandwich layer of the double-layer enclosure. An air outlet part is provided on the surface of the annular air pipe. An air inlet pipe is provided on the annular air pipe. Inert gas is introduced into the annular air pipe through the air inlet pipe and discharged from the air outlet part to form an annular air curtain.

[0006] In the aforementioned integrated device of an inert gas protection hydraulic steel pouring mechanism, the air outlet part is air holes evenly distributed along the circumferential direction of the annular air pipe.

[0007] In the aforementioned integrated device of an inert gas protection hydraulic steel pouring mechanism, the aperture of the air hole is 1 - 3 mm.

[0008] In the aforementioned integrated device of an inert gas protection hydraulic steel pouring mechanism, the air outlet part is an annular air gap distributed along the surface of the annular air pipe.

[0009] In the aforementioned integrated device of an inert gas protection hydraulic steel pouring mechanism, the width of the annular air gap is 1 - 3 mm.

[0010] In the aforementioned integrated device of an inert gas protected hydraulic steel pouring mechanism, the inner structure and the outer structure of the double-layer enclosure are the same. The diameter of the double-layer enclosure is smaller on the side close to the base and larger on the side far from the base.

[0011] In the aforementioned integrated device of an inert gas protected hydraulic steel pouring mechanism, a through hole for the ladle water outlet to pass through is provided at the center of the base.

[0012] In the aforementioned integrated device of an inert gas protected hydraulic steel pouring mechanism, the annular gas pipe, the double-layer enclosure and the base are concentrically distributed.

[0013] In the aforementioned integrated device of an inert gas protected hydraulic steel pouring mechanism, the inlet pipe passes through the double-layer enclosure, and an inlet quick-connect joint is provided at the inlet end of the inlet pipe.

[0014] In the aforementioned integrated device of an inert gas protected hydraulic steel pouring mechanism, bolt holes for connecting with the ladle are provided on the base.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, by introducing inert gas into the annular gas pipe and discharging an annular air curtain through the air outlet part, the outside air is effectively isolated, preventing the outside air from entering the cast steel ingot along with the poured molten steel and affecting the product quality, and the isolation effect is good. The annular gas pipe is embedded in the interlayer of the double-layer enclosure and is protected by the double-layer enclosure, not easily damaged by molten steel, nor easily blocked by slag splashed by molten steel, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of Embodiment 1 of the present utility model.

[0018] Figure 2 is a schematic cross-sectional structural view of Embodiment 1 of the present utility model.

[0019] Figure 3 is a schematic structural view of the base of Embodiment 1 of the present utility model.

[0020] Figure 4 is a schematic structural view of Embodiment 2 of the present utility model.

[0021] The reference signs in the drawings are: 1, base; 11, through hole; 12, bolt hole; 2, double-layer enclosure; 21, interlayer; 3, annular gas pipe; 31, inlet pipe; 311, inlet quick-connect joint; 32, air outlet hole; 33, annular air gap; 4, water outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below with reference to the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0023] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement", "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] As Figures 1 - 3 shown, an inert gas protected hydraulic steel casting mechanism integrated device includes a base 1 installed on a ladle. A double-layer enclosure 2 is provided on the base 1. An annular air pipe 3 is provided in the sandwich layer 21 of the double-layer enclosure 2. An air outlet part is provided on the surface of the annular air pipe 3. An air inlet pipe 31 is provided on the annular air pipe 3. Inert gas is introduced into the annular air pipe 3 through the air inlet pipe 31 and discharged from the air outlet part to form an annular air curtain. The annular air curtain effectively isolates the outside air, preventing the outside air from entering the cast ingot along with the molten steel during pouring and affecting the product quality, and the isolation effect is good. The width of the sandwich layer 21 can be 2 - 5 cm. The annular air pipe 3 is embedded in the sandwich layer 21 and is protected by the double-layer enclosure 2, not easily damaged by the molten steel, nor easily splashed by the molten steel to cause slag accumulation and blockage, and has a long service life.

[0026] The air outlet part is air holes 32 evenly distributed along the circumferential direction of the annular air pipe 3. The aperture of the air holes 32 is 1 - 3 mm.

[0027] The inner structure and the outer structure of the double-layer enclosure 2 are the same. The diameter of the double-layer enclosure 2 near the base 1 is small, and the diameter of the double-layer enclosure 2 far from the base 1 is large. The side cross-section of the double-layer enclosure 2 is conical, and the included angle between the double-layer enclosure 2 and the base 1 is 100°. This structural design can expand the isolation range of the annular air curtain and improve the isolation effect. The double-layer enclosure 2 is made of heat-resistant steel and has a long service life.

[0028] A through hole 11 for the ladle water outlet 4 to pass through is provided at the center of the base 1.

[0029] The annular air pipe 3, the double-layer enclosure 2 and the base 1 are concentrically distributed.

[0030] The air inlet pipe 31 passes through the double-layer enclosure 2, and an air inlet quick-connect joint 311 is provided at the air inlet end of the air inlet pipe 31. It is convenient to connect different gas devices.

[0031] The base 1 is provided with bolt holes 12 for connecting with the ladle. Bolts are arranged in the bolt holes 12, and the base 1 is fixedly connected with the ladle through the bolts. The connection is tight and stable, not easy to shift in position, and effectively blocks the air from entering between the device and the ladle.

[0032] Working principle: Fix the base 1 at the bottom of the ladle. When pouring molten steel, argon is introduced into the annular pipeline of the device through the air inlet pipe 31. The argon is discharged through a plurality of air outlet holes 32 distributed circumferentially, flows downward along the double-layer enclosure 2, and forms an annular argon protection air curtain to cover the middle casting nozzle, effectively blocking the air outside the middle casting pipe from entering, avoiding the contact between the outside air and the molten steel jet and entering the cast ingot, improving the stability of continuous steel pouring operation, and improving the quality and performance of the cast product.

[0033] Embodiment 2:

[0034] As Figure 4 shown, this embodiment is basically the same as Embodiment 1, the difference being that:

[0035] The air outlet part is an annular air gap 33 distributed along the surface of the annular gas pipe 3. The width of the annular air gap 33 is 1 - 3 mm.

[0036] Working principle: Fix the base 1 at the bottom of the ladle. When pouring molten steel, argon is introduced into the annular pipeline of the device through the air inlet pipe 31. The argon is discharged through the annular air gap 33, flows downward along the double-layer enclosure 2, and forms an annular argon protection air curtain to cover the middle casting nozzle, effectively blocking the air outside the middle casting pipe from entering, avoiding the contact between the outside air and the molten steel jet and entering the cast ingot, improving the stability of continuous steel pouring operation, and improving the quality and performance of the cast product.

[0037] The parts not described in detail in the present utility model are prior arts, so they will not be specifically elaborated here.

Claims

1. An inert gas protection hydraulic steel casting mechanism integrated device, characterized in that: The invention comprises a base (1) installed on a ladle, a double-layer enclosure (2) being provided on the base (1), an annular air pipe (3) being provided in an interlayer (21) of the double-layer enclosure (2), an air outlet being provided on the surface of the annular air pipe (3), an air inlet pipe (31) being provided on the annular air pipe (3), inert gas passing into the annular air pipe (3) through the air inlet pipe (31) and being discharged from the air outlet to form an annular air curtain.

2. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The air outlet portion is an air outlet hole (32) evenly distributed along the circumferential direction of the annular air pipe (3).

3. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 2, characterized in that: The diameter of the air outlet hole (32) is 1 to 3 mm.

4. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The air outlet is an annular air slit (33) distributed along the surface of the annular air pipe (3).

5. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 4, characterized in that: The width of the annular air gap (33) is 1 to 3 mm.

6. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The inner layer structure and the outer layer structure of the double-layer enclosure (2) are consistent, the diameter of the double-layer enclosure (2) close to the base (1) is small, and the diameter of the double-layer enclosure (2) away from the base (1) is large.

7. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: A through hole (11) is provided at the center of the base (1) for the ladle drain port (4) to pass through.

8. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The annular air pipe (3), the double-layer enclosure (2) and the base (1) are distributed concentrically.

9. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The air intake pipe (31) passes through the double-layer enclosure (2), and an air intake quick-connect joint (311) is provided at the air intake end of the air intake pipe (31).

10. The inert gas protection hydraulic steel casting mechanism integrated device according to claim 1, characterized in that: The base (1) is provided with bolt holes (12) for connecting with a ladle.

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