CN219603622U - Oxygen lance device - Google Patents

Abstract

The utility model discloses an oxygen lance device which is mainly provided with a spray head, an outer pipe, a middle pipe, an inner pipe, a pressing plate, a first sealing ring and a second sealing ring; the oxygen lance device adopts a sleeve structure, and gaps are formed among the outer pipe, the middle pipe and the inner pipe, so that a cooling water channel is formed, and cooling water can form a spraying and sucking effect in the cooling water channel; the device has high circulation efficiency, good forced cooling effect, simple structure and reliable use.

Description

Oxygen lance device

Technical Field

The utility model relates to steelmaking equipment in the field of metallurgical machinery, in particular to an oxygen lance device.

Background

In metallurgical steelmaking equipment, an oxygen blowing device is key equipment for steelmaking of an oxygen top-blown converter, high-pressure oxygen is blown into the steelmaking furnace through the oxygen blowing device, the oxygen pressure is effectively converted into kinetic energy, a relatively stable supersonic flow is obtained, and liquid metal is stirred, so that decarburization and dephosphorization effects are realized. The oxygen lance device is a working part of the oxygen blowing device, power oxygen is converted into a plurality of supersonic oxygen flows into the steelmaking furnace through the oxygen lance device, high-pressure oxygen is blown into the steelmaking furnace, the working environment temperature is high, the oxygen lance device needs to be forcedly cooled in order to keep the normal working of the oxygen lance device, and at present, a water cooling system is generally adopted in China, but the water circulation efficiency is low.

Disclosure of Invention

The utility model aims to provide an oxygen lance device, which has the advantages that the cooling water flow forms a spraying and sucking effect, and the circulating efficiency of a water cooling system is high.

The oxygen lance device is characterized by comprising a spray head, an outer pipe, a middle pipe, an inner pipe, a pressing plate, a first sealing ring and a second sealing ring; the whole shower nozzle is the structure of the rotating body, there are outer wall sections, middle wall section, inner wall section on it, there are external screw threads on the outer end of the inner wall section, there are five spray holes in the outer end surface of the outer wall section, the inner wall section, middle wall section and inner wall section are hollow and three link to each other at the root, the inner wall section is communicated with five spray holes each other, the root of the middle wall section has several diversion through holes in order to realize that the interval formed between inner wall section and middle wall section and interval formed between middle wall section and outer wall section are communicated each other; the outer tube main body is a through circular tube, a legal flange is arranged at the upper end of the circular tube, a round bent tube which is through with the circular tube is arranged at a position adjacent to the legal flange, two V-shaped mounting seats are arranged at positions adjacent to the round bent tube, and the two V-shaped mounting seats are symmetrically arranged relative to the central line of the circular tube and are assembled and welded with the circular tube; the middle pipe main body is a through circular pipe, an inner hole is formed in the lower end of the circular pipe, a first legal flange is arranged at the upper end of the circular pipe, two V-shaped mounting seats are arranged adjacent to the first legal flange, the two V-shaped mounting seats are symmetrically arranged relative to the central line of the circular pipe and are assembled and welded with the circular pipe, a circular bent pipe which is communicated with the circular pipe is arranged adjacent to the V-shaped mounting seats, a second combining flange is arranged adjacent to the circular bent pipe, and four inclined holes which are uniformly distributed in circumference are formed in the adjacent position below the second legal flange; the inner pipe main body is a through circular pipe, an inner threaded hole is formed in the lower end of the circular pipe, two hanging rings are sealed at the upper end of the circular pipe and welded in a assembling mode, and a round bent pipe which is communicated with the circular pipe is arranged at a position adjacent to the two hanging rings; the circular tube of the middle tube passes through the second sealing ring and the circular tube of the outer tube, the second closing flange of the middle tube is fixedly connected with the legal flange of the outer tube, and the second sealing ring is pressed against the closing flange of the outer tube and the circular tube of the middle tube; the inner hole of the middle pipe is connected with the middle wall section of the spray head in a sealing way, the lower end of the round pipe of the outer pipe is connected with the end face of the outer wall section of the spray head in a welding way, and the pressing plate is fixedly connected with the first legal flange of the middle pipe and presses the first sealing ring against the first combining flange of the middle pipe and the round pipe of the inner pipe; two V-shaped mounting seats of the outer tube and two V-shaped mounting seats of the middle tube of the oxygen lance device are arranged on a rectangular groove of the body of the lifting trolley.

The beneficial effects of the utility model are as follows:

1. the cooling water forms a spray-suction effect, the circulation efficiency is high, and the forced cooling effect is good;

2. simple structure and reliable use.

Drawings

FIG. 1 is a schematic perspective view of an oxygen lance apparatus of the present utility model.

FIG. 2 is an exploded perspective view of the oxygen lance device of the present utility model.

Detailed Description

Referring to fig. 1 and 2, the utility model is composed of a spray head 1, an outer tube 2, a middle tube 3, an inner tube 4, a pressing plate 5, a first sealing ring 6 and a second sealing ring 7; the whole spray head 1 is of a rotary body structure, an outer wall section 11, a middle wall section 12 and an inner wall section 13 are arranged on the spray head, an external thread 14 is arranged at the outer end of the inner wall section 13, five spray holes 15 are arranged on the outer end face of the outer wall section 11, the inner wall section 13, the middle wall section 12 and the outer wall section 11 are hollow and are connected at the root, the inner wall section 13 is communicated with the five spray holes 15, a plurality of flow guide through holes 16 are formed at the root of the middle wall section 12 so as to realize the mutual communication of a gap formed between the inner wall section 13 and the middle wall section 12 and a gap formed between the middle wall section 12 and the outer wall section 11; the main body of the outer tube 2 is a through circular tube 21, a legal flange 22 is arranged at the upper end of the circular tube 21, a circular bent tube 23 which is communicated with the circular tube 21 is arranged at a position adjacent to the legal flange 22, two V-shaped mounting seats 24 are arranged at a position adjacent to the circular bent tube 23, and the two V-shaped mounting seats 24 are symmetrically arranged relative to the central line of the circular tube 21 and are assembled and welded with the circular tube 21; the main body of the middle pipe 3 is a through circular pipe 31, an inner hole 32 is arranged at the lower end of the circular pipe 31, a first handle flange 33 is arranged at the upper end of the circular pipe 31, two V-shaped mounting seats 34 are arranged adjacent to the first handle flange 33, the two V-shaped mounting seats 24 are symmetrically arranged relative to the central line of the circular pipe 21 and are assembled and welded with the circular pipe 21, a round bent pipe 35 which is communicated with the circular pipe 31 is arranged adjacent to the V-shaped mounting seats 34, a second handle flange 36 is arranged adjacent to the round bent pipe 35, and four inclined holes 37 which are uniformly distributed in circumference are arranged adjacent to the lower part of the second handle flange 36; the main body of the inner pipe 4 is a through circular pipe 41, an internal threaded hole 42 is arranged at the lower end of the circular pipe 41, two hanging rings 43 are sealed at the upper end of the circular pipe 41 and assembled and welded, and a round bent pipe 44 which is communicated with the circular pipe 41 is arranged at a position adjacent to the two hanging rings 43; the round tube 31 of the middle tube 3 passes through the second sealing ring 7 and the round tube 21 of the outer tube 2, the second legal flange 36 of the middle tube 3 is fixedly connected with the legal flange 22 of the outer tube 2 and the second sealing ring 7 is pressed against the legal flange 22 of the outer tube 2 and the round tube 31 of the middle tube 3; the circular tube 41 of the inner tube 4 passes through the pressing plate 5, the first sealing ring 6 and the circular tube 31 of the middle tube 3, the external thread 14 of the spray head 1 is arranged in the internal thread hole 42 of the inner tube 4 to form threaded sealing connection, the inner hole 32 of the middle tube 3 is arranged together with the middle wall section 12 of the spray head 1, the lower end of the circular tube 21 of the outer tube 2 is connected with the end face of the outer wall section 11 of the spray head 1 and the end face of the outer wall section 11 of the spray head are welded together, the pressing plate 5 is fixedly connected with the first handle flange 33 of the middle tube 3 and presses the first sealing ring 6 against the first handle flange 33 of the middle tube 3 and the circular tube 41 of the inner tube 4.

The working principle of this embodiment is as follows:

the embodiment comprises a spray head, an outer pipe, a middle pipe, an inner pipe, a pressing plate, a first sealing ring and a second sealing ring. The inner tube of the oxygen lance device is provided with a round bent tube, the round bent tube is externally connected with high-pressure oxygen, the high-pressure oxygen enters a nozzle connected with the inner tube through the inner tube, the nozzle is a five-hole Laval nozzle, supersonic oxygen flow can be obtained through the nozzle, and then stirring of liquid metal in a steelmaking furnace can be realized, so that the decarburization and dephosphorization effects are achieved. The middle pipe is provided with a round bent pipe, the round bent pipe is externally connected with cooling water, a part of high-pressure cooling water is led into a gap formed between the inner pipe and the middle pipe through the round bent pipe, then enters a gap between the inner wall section and the middle wall section of the spray head, passes through a diversion through hole formed in the spray head, enters the front end of the gap formed between the middle wall section and the outer wall section of the spray head, achieves the spraying effect, and a part of high-pressure cooling water is sprayed out to the rear end of the gap formed between the middle pipe and the outer pipe through an inclined hole formed in the middle pipe, so that a negative pressure area is formed, the effect of absorbing cooling water is achieved, the cooling water forms a spraying effect in the oxygen lance device, the circulation efficiency of the cooling water is improved, and the forced cooling effect is greatly improved.

Claims (1)

1. An oxygen lance device is characterized in that the cooling water flow of the device forms a spraying and sucking effect, and the water cooling system has high circulation efficiency; the device is characterized by comprising a spray head, an outer pipe, a middle pipe, an inner pipe, a pressing plate, a first sealing ring and a second sealing ring; the whole shower nozzle is the structure of the rotating body, there are outer wall sections, middle wall section, inner wall section on it, there are external screw threads on the outer end of the inner wall section, there are five spray holes in the outer end surface of the outer wall section, the inner wall section, middle wall section and inner wall section are hollow and three link to each other at the root, the inner wall section is communicated with five spray holes each other, the root of the middle wall section has several diversion through holes in order to realize that the interval formed between inner wall section and middle wall section and interval formed between middle wall section and outer wall section are communicated each other; the outer tube main body is a through circular tube, a legal flange is arranged at the upper end of the circular tube, a round bent tube which is through with the circular tube is arranged at a position adjacent to the legal flange, two V-shaped mounting seats are arranged at positions adjacent to the round bent tube, and the two V-shaped mounting seats are symmetrically arranged relative to the central line of the circular tube and are assembled and welded with the circular tube; the middle pipe main body is a through circular pipe, an inner hole is formed in the lower end of the circular pipe, a first legal flange is arranged at the upper end of the circular pipe, two V-shaped mounting seats are arranged adjacent to the first legal flange, the two V-shaped mounting seats are symmetrically arranged relative to the central line of the circular pipe and are assembled and welded with the circular pipe, a circular bent pipe which is communicated with the circular pipe is arranged adjacent to the V-shaped mounting seats, a second combining flange is arranged adjacent to the circular bent pipe, and four inclined holes which are uniformly distributed in circumference are formed in the adjacent position below the second legal flange; the inner pipe main body is a through circular pipe, an inner threaded hole is formed in the lower end of the circular pipe, two hanging rings are sealed at the upper end of the circular pipe and welded in a assembling mode, and a round bent pipe which is communicated with the circular pipe is arranged at a position adjacent to the two hanging rings; the circular tube of the middle tube passes through the second sealing ring and the circular tube of the outer tube, the second closing flange of the middle tube is fixedly connected with the legal flange of the outer tube, and the second sealing ring is pressed against the closing flange of the outer tube and the circular tube of the middle tube; the inner hole of the middle pipe is connected with the middle wall section of the spray head in a sealing way, the lower end of the round pipe of the outer pipe is connected with the end face of the outer wall section of the spray head in a welding way, and the pressing plate is fixedly connected with the first legal flange of the middle pipe and presses the first sealing ring against the first combining flange of the middle pipe and the round pipe of the inner pipe; two V-shaped mounting seats of the outer tube and two V-shaped mounting seats of the middle tube of the oxygen lance device are arranged on a rectangular groove of the body of the lifting trolley.