CN219297562U

CN219297562U - Oxygen lance

Info

Publication number: CN219297562U
Application number: CN202223489628.1U
Authority: CN
Inventors: 李国丰; 刘彬鑫; 孙永亮; 吴林琦
Original assignee: Tianjin Fufeng Environmental Protection Technology Co ltd
Current assignee: Tianjin Fufeng Environmental Protection Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-07-04
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses an oxygen lance which comprises a main oxygen pipe, a gas pipe, an epoxy pipe and an outer wall pipe which are sequentially nested from inside to outside, wherein the rear end of the epoxy pipe is connected with a first coupling through a male connector and a female connector, and the rear end of the first coupling is connected with the rear end of the main oxygen pipe through the male connector and the female connector; two chambers are formed in the first coupling and are respectively communicated with a gas chamber between the main oxygen pipe and the gas pipe and an epoxy chamber between the gas pipe and the epoxy pipe; and the male connector and the female connector are externally provided with a hoop. The existing flange connection mode of the oxygen lance is replaced by the connection mode of the male connector and the female connector, and the anchor ear is arranged outside the male connector and the female connector, so that the oxygen lance is convenient to detach and replace a lance core; the arrangement of the anchor ear increases the firmness of connection and prevents the axial direction from being separated. In addition, this application sets up the sealing washer at the contact surface of pin and box, has increased the whole leakproofness of oxygen rifle.

Description

Oxygen lance

Technical Field

The utility model relates to the field of oxygen lances for steelmaking, in particular to an oxygen lance.

Background

The coherent oxygen lance applies the principle of aeromechanics, and an accompanying flow system is added on the traditional oxygen lance, so that the attenuation speed of oxygen jet flow is greatly slowed down, and oxygen jet flow similar to laser beams is formed. The oxygen jet flow is improved to have influence on the penetration depth and stirring intensity of a molten pool, and meanwhile, the jet flow speed is delayed, so that the converting gun position of the oxygen gun can be improved, the impact depth of the jet flow on molten steel is not influenced, and the service life of an oxygen gun nozzle is prolonged. According to the action principle of the coherent oxygen lance, a plurality of nested pipe bodies are arranged inside the coherent oxygen lance, and the pipe bodies are connected through flanges at present, but the flange connection is inconvenient to detach, the tightness is poor, and the production requirement can not be well met.

Disclosure of Invention

The utility model provides an oxygen lance for solving the technical problems.

The utility model is realized by the following technical scheme.

The oxygen lance comprises a main oxygen pipe, a gas pipe, an epoxy pipe and an outer wall pipe which are sequentially nested from inside to outside, wherein the rear end of the epoxy pipe is connected with a first coupling through a male connector and a female connector, and the rear end of the first coupling is connected with the rear end of the main oxygen pipe through the male connector and the female connector; two chambers are formed in the first coupling and are respectively communicated with a gas chamber between the main oxygen pipe and the gas pipe and an epoxy chamber between the gas pipe and the epoxy pipe; and the male connector and the female connector are externally provided with a hoop.

Further, the anchor ear comprises a first arc plate, a second arc plate and a third arc plate which are sequentially hinged through hinge bolts; the pressing plate is hinged at the head end of the first arc plate through a hinge bolt; a hinge bolt is penetrated in the middle of the pressing plate, and a hook plate is penetrated on the hinge bolt; and a through hole for inserting the front end of the hook plate is formed in the plate body, close to the vacant end, of the third arc plate.

Further, a sealing ring is arranged between the male connector and the female connector.

Further, the front ends of the main oxygen pipe, the gas pipe, the epoxy pipe and the outer wall pipe are provided with a nozzle and a copper head.

The present application has the following advantageous effects.

The existing flange connection mode of the oxygen lance is replaced by the connection mode of the male connector and the female connector, and the anchor ear is arranged outside the male connector and the female connector, so that the oxygen lance is convenient to detach and replace a lance core; the arrangement of the anchor ear increases the firmness of connection and prevents the axial direction from being separated. In addition, this application sets up the sealing washer at the contact surface of pin and box, has increased the whole leakproofness of oxygen rifle. The utility model has simple design, good use effect and strong practicability.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a top view of the anchor ear of the present utility model;

fig. 4 is a schematic structural view of the anchor ear of the present utility model.

1, a main oxygen pipe; 2. a gas pipe; 3. an epoxy tube; 4. a water-blocking pipe; 5. an outer wall tube; 6. a copper head; 7. a nozzle; 8. a male connector; 9. a female joint; 10. a seal ring; 11. a hoop; 1101. a first arc plate; 1102. a second arc plate; 1103. a third arc plate; 1104. a hinge bolt; 1105. a through hole; 1106. a hook plate; 1107. a pressing plate; 12. a primary oxygen take-over; 13. a gas connection pipe; 14. an epoxy nipple; 15. a water inlet pipe; 16. a water outlet pipe; 17. a first collar.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

As shown in fig. 1-4, an oxygen lance comprises a main oxygen pipe 1, wherein a gas pipe 2 is sleeved outside the main oxygen pipe 1, an epoxy pipe 3 is sleeved outside the gas pipe 2, an outer wall pipe 5 is sleeved outside the epoxy pipe 3, and a water isolation pipe 4 is arranged between the epoxy pipe 3 and the outer wall pipe 5. The inside of the main oxygen pipe 1 is a main oxygen cavity, a gas cavity is formed between the main oxygen pipe 1 and the gas pipe 2, an epoxy cavity is formed between the gas pipe 2 and the epoxy pipe 3, and a cooling cavity is formed between the epoxy pipe 3 and the outer wall pipe 5. The front ends of the main oxygen pipe 1 and the gas pipe 2 are connected with a nozzle 7, and the front ends of the epoxy pipe 3 and the outer wall pipe 5 are connected with a copper head 6.

The tail end of the outer wall pipe 5 is connected with a second coupling, and the second coupling is connected with a water outlet pipe 16; and a third coupling is sleeved at the rear part of the epoxy pipe 3, the third coupling is closely adjacent to the second coupling, and the third coupling is connected with the water inlet pipe 15.

The rear part of the main oxygen pipe 1 and the rear end of the gas pipe 2 are sleeved with a first coupling 17, and the first coupling 17 is connected with the gas connecting pipe 13 and the epoxy connecting pipe 14. Two chambers are formed in the first coupling 17 and are respectively communicated with the fuel gas chamber and the epoxy chamber; the gas connecting pipe 13 is communicated with the gas cavity, and the epoxy connecting pipe 14 is communicated with the epoxy cavity. According to the method, the coupling of the epoxy pipe and the coupling of the gas pipe are designed into an integrated structure, so that the gun core is further convenient to replace.

One end of the first coupling 17 is connected with the female connector 9, and the other end is connected with the male connector 8. The female connector 9 of the first coupling 17 is matched with the male connector 8 at the tail end of the epoxy tube 3; the male connector 8 of the first coupling 17 is matched with the female connector 9 at the tail end of the main oxygen pipe 1, and the female connector 9 of the main oxygen pipe 1 is also connected with the main oxygen pipe 12. In order to increase the tightness of the oxygen lance, sealing rings 10 are arranged on the sealing surfaces of the male connector 8 and the female connector 9.

The anchor ear 11 is movably arranged outside the male and female connector, and the anchor ear 11 comprises a first arc plate 1101, a second arc plate 1102 and a third arc plate 1103 which are sequentially hinged through a hinge bolt 1104; a pressing plate 1107 is hinged at the head end of the first arc plate 1101 through a hinge bolt 1104; a hinge bolt 1104 is arranged in the middle of the pressing plate 1107 in a penetrating way, and a hook plate 1106 is arranged on the hinge bolt 1104 in a penetrating way; a through hole 1105 is formed in the plate body of the third arc plate 1103 near the free end for inserting the front end of the hook plate 1106. After the male connector 8 is inserted into the female connector 9, the hoop 11 is sleeved outside the male connector, the head end of the hook plate 1106 is inserted into the through hole 1105, the pressing plate 1107 is pressed towards the body direction of the hoop 11, the hoop 11 can be locked, and the reliability of connection is guaranteed by fixing the hoop 11 outside the male connector and the female connector.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides an oxygen rifle, includes from inside to outside nested main oxygen pipe (1), gas pipe (2), epoxy pipe (3) and outer wall pipe (5) in proper order, its characterized in that: the rear end of the epoxy pipe (3) is connected with a first coupling (17) through a male-female joint, and the rear end of the first coupling (17) is connected with the rear end of the main oxygen pipe (1) through a male-female joint; two chambers are formed in the first coupling (17) and are respectively communicated with a gas chamber between the main oxygen pipe (1) and the gas pipe (2) and an epoxy chamber between the gas pipe (2) and the epoxy pipe (3); and a hoop (11) is arranged outside the male connector and the female connector.

2. An oxygen lance according to claim 1, wherein: the anchor ear (11) comprises a first arc plate (1101), a second arc plate (1102) and a third arc plate (1103) which are sequentially hinged through a hinge bolt (1104); a pressing plate (1107) is hinged at the head end of the first arc plate (1101) through a hinged bolt (1104); a hinged bolt (1104) is arranged in the middle of the pressing plate (1107) in a penetrating way, and a hook plate (1106) is arranged on the hinged bolt (1104) in a penetrating way; a through hole (1105) for inserting the front end of the hook plate (1106) is formed on the plate body of the third arc plate (1103) close to the vacant end.

3. An oxygen lance according to claim 1, wherein: a sealing ring (10) is arranged between the male connector and the female connector.

4. An oxygen lance according to claim 1, wherein: the front ends of the main oxygen pipe (1), the gas pipe (2), the epoxy pipe (3) and the outer wall pipe (5) are provided with a nozzle (7) and a copper head (6).