Diameter-variable oxygen lance cone tube

Abstract

A pipeline structure comprises an upper connecting shell, one side of the outer wall of the upper connecting shell is connected with a water inlet pipe in a penetrating mode, the other end of the water inlet pipe is connected with a water drainage pipe in a penetrating mode, and the middle of the top of the upper connecting shell is hollowed out. Abutting plates are slidably connected to the positions, located below the water inlet pipe and the water outlet pipe, of the inner wall of the upper connecting shell, one side of the outer wall of each abutting plate is arranged to be an inclined face, the other side of the outer wall of each abutting plate penetrates out of the upper connecting shell and is fixedly connected with a pressing plate, the outer wall of each pressing plate is slidably connected with the upper connecting shell, and springs are fixedly connected to the bottoms of the abutting plates. The other end of the spring is fixedly connected with the lower end of the inner wall of the upper connecting shell, the side, located on the inclined face, of the abutting plate is in movable contact with a ball, the whole ball is movably connected with the inner wall of the upper connecting shell, one end of the ball penetrates out of the inner side of the upper connecting shell, the oxygen conveying pipeline and the cone pipeline can be independently replaced, and the cost during overhaul and maintenance can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen lances, in particular to a diameter-variable cone tube of an oxygen lance. Background Art

[0002] An oxygen lance is a device used to inject oxygen into a high-temperature furnace to accelerate the combustion process or improve smelting efficiency. It usually consists of a nozzle and an oxygen supply system. The oxygen flow rate and injection speed can be adjusted as needed. Oxygen lances are widely used in high-temperature processes in industries such as metallurgy, chemical industry and energy.

[0003] A Chinese patent discloses a large-diameter oxygen lance for steelmaking (publication number: CN214830457U). The device includes an oxygen lance inner tube, an oxygen lance middle tube, an oxygen lance outer tube and a nozzle. The oxygen lance middle tube includes a middle straight section, a middle inverted diameter reducing section and a middle diameter reducing section connected in sequence. The oxygen lance outer tube includes an outer straight section, an outer inverted diameter reducing section and an outer diameter reducing section connected in sequence. The middle inverted diameter reducing section, the middle diameter reducing section, the outer inverted diameter reducing section and the outer diameter reducing section are all seamless diameter reducing tubes. The use of seamless diameter reducing tubes improves the safety of the oxygen lance. The taper of the oxygen lance body is large, so that the slag adhered to the outer wall of the oxygen lance is easier to fall off. However, the device still has the following defects:

[0004] When using an oxygen lance, the high pressure and high flow of oxygen may cause damage to the conical tube. During the inspection and maintenance process, the entire conical tube of the oxygen lance often needs to be disassembled and replaced, which is not conducive to cost saving. In addition, when facing different processing requirements, the diameter of the conical tube may need to be adjusted, and the conical tube in the prior art is not easy to disassemble and replace. Therefore, a variable-diameter oxygen lance conical tube is proposed to solve the above problems. Utility Model Content

[0005] The technical problems to be solved by the utility model are as follows:

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A variable diameter oxygen lance cone tube, comprising a cone tube as a whole, a pipeline structure is arranged above the cone tube as a whole, and a gas transmission mechanism is arranged below the pipeline structure;

[0008] Also includes:

[0009] Wherein, the pipeline structure comprises an upper connecting shell, one side of the outer wall of the upper connecting shell is connected with a water inlet pipe, the other end of the water inlet pipe is connected with a drain pipe, and the top middle of the upper connecting shell is hollowed out;

[0010] Wherein, the inner wall of the upper connection shell and located below the water inlet pipe and the drain pipe are slidably connected with a butt plate, one side of the outer wall of the butt plate is set as an inclined surface, the other side of the outer wall of the butt plate passes through the upper connection shell and is fixedly connected with a pressure plate, and the outer wall of the pressure plate is slidably connected to the upper connection shell;

[0011] Among them, a spring is fixedly connected to the bottom of the support plate, and the other end of the spring is fixedly connected to the lower end of the inner wall of the upper connecting shell. The support plate is located on one side of the inclined surface and is movably contacted with a ball. The ball is movably connected to the inner wall of the upper connecting shell as a whole, and one end of the ball passes through the inner side of the upper connecting shell.

[0012] As a further solution of the utility model: the vertebral body tube as a whole includes an outer reducer, and both sides of the top of the outer wall of the outer reducer are provided with grooves. The outer side of the top of the outer reducer is sleeved and connected to the lower end of the inner wall of the upper connecting shell, and the inner walls of the two grooves are respectively engaged and connected with two ball bearings.

[0013] As a further solution of the utility model: the inner wall of the outer reducer is fixedly connected to the inner reducer, a water hole is opened at the lower end of the outer wall of the inner reducer, and a water inlet cavity is provided between the inner wall of the outer reducer and the outer wall of the inner reducer.

[0014] As a further solution of the utility model: the gas delivery mechanism includes a lower connecting shell, the middle inner wall of the lower connecting shell is fixedly connected with an oxygen delivery pipe, the top of the oxygen delivery pipe passes through the lower connecting shell upward, and the bottom side of the oxygen delivery pipe is fixedly connected with a nozzle, and the lower end of the nozzle extends downward to the bottom of the lower connecting shell.

[0015] As a further solution of the utility model: a sealing ring is fixedly connected to the outer side of the top surface of the lower connecting shell, the inner side of the top of the lower connecting shell is movably connected to the outer reducer, the top of the sealing ring is movably contacted with the bottom of the outer reducer, both ends of the top of the lower connecting shell are movably connected with bolts, the top of the bolt is connected to the outer reducer, the bottom of the bolt passes through the lower connecting shell and the outer wall is threaded with a nut.

[0016] As a further solution of the utility model: the middle outer wall of the lower connecting shell is connected through the inner side of the inner reducer, the top outer wall of the lower connecting shell passes through the hollow middle part of the top surface of the upper connecting shell, and a drainage cavity is provided between the inner wall of the inner reducer and the outer wall of the oxygen supply pipe.

[0017] As a further solution of the utility model: the taper of the lower end of the outer wall of the outer reducer and the inner reducer is 1 degree to 5 degrees.

[0018] Beneficial effects of the utility model:

[0019] (1) The utility model sets the oxygen delivery pipeline and the vertebral body pipeline as two independent parts. When the pipeline in the two is damaged, it can be removed and replaced separately, and the original normal pipeline can be retained for continued use, which is conducive to reducing the cost of inspection and maintenance;

[0020] (2) When replacing the oxygen supply pipeline, the bolts installed on the side of the outer reducer are unscrewed one by one, and the lower connecting shell can be pulled out to bring out the oxygen supply pipeline. Then, when replacing the vertebral pipeline, the pressure plate is pushed and the outer reducer is pulled out to the outside to drive it to be separated from the pipeline structure. The disassembly operation is simple and convenient for operators to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the upper connecting shell in the utility model;

[0024] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model;

[0025] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure of region A;

[0026] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of area B.

[0027] In the figure: 1. The vertebral tube as a whole; 101. The outer reducer; 102. The inner reducer; 103. The water hole; 104. The slot; 105. The water inlet chamber; 106. The water discharge chamber; 2. The pipeline structure; 201. The upper connecting shell; 202. The water inlet pipe; 203. The water discharge pipe; 204. The abutment plate; 205. The spring; 206. The ball bearing; 207. The pressure plate; 3. The gas transmission mechanism; 301. The lower connecting shell; 302. The oxygen transmission pipe; 303. The nozzle; 304. The sealing ring; 305. The bolt; 306. The nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1-5As shown, a variable diameter oxygen lance cone tube includes a cone tube as a whole 1, a pipeline structure 2 is arranged above the cone tube as a whole 1, and a gas transmission mechanism 3 is arranged below the pipeline structure 2; wherein the pipeline structure 2 includes an upper connecting shell 201, a water inlet pipe 202 is connected to one side of the outer wall of the upper connecting shell 201, and a drain pipe 203 is connected to the other end of the water inlet pipe 202, and the top middle of the upper connecting shell 201 is hollowed out; wherein the inner wall of the upper connecting shell 201 and below the water inlet pipe 202 and the drain pipe 203 are slidably connected to a stop plate 20 4. One side of the outer wall of the push plate 204 is set as an inclined surface, and the other side of the outer wall of the push plate 204 passes through the upper connecting shell 201 and is fixedly connected with a pressure plate 207, and the outer wall of the pressure plate 207 is slidably connected to the upper connecting shell 201; wherein, a spring 205 is fixedly connected to the bottom of the push plate 204, and the other end of the spring 205 is fixedly connected to the lower end of the inner wall of the upper connecting shell 201, and the push plate 204 is located on one side of the inclined surface and is in active contact with a ball 206, and the ball 206 is movably connected to the inner wall of the upper connecting shell 201 as a whole, and one end of the ball 206 passes through the inner side of the upper connecting shell 201, such as Figure 3-Figure 4 As shown, the spring 205 pushes the plate 204 upward, so that the plate 204 pushes one side of the ball 206 into the slot 104;

[0030] The vertebral body tube 1 includes an outer reducer 101. The outer wall top of the outer reducer 101 is provided with slots 104 on both sides. The outer side of the top of the outer reducer 101 is sleeved and connected with the lower end of the inner wall of the upper connecting shell 201. The inner walls of the two slots 104 are respectively engaged with two balls 206. Figure 3-Figure 4 As shown, after the plate 204 pushes the ball 206 into the slot 104, the upper connecting shell 201 and the outer reducer 101 are relatively fixed;

[0031] The inner wall of the outer reducer 101 is fixedly connected to the inner reducer 102, the lower end of the outer wall of the inner reducer 102 is provided with a water hole 103, and a water inlet cavity 105 is provided between the inner wall of the outer reducer 101 and the outer wall of the inner reducer 102. Figure 3 As shown, the coolant is transferred between the water inlet chamber 105 and the water outlet chamber 106 through the water through hole 103;

[0032] The gas delivery mechanism 3 includes a lower connecting shell 301, an oxygen delivery pipe 302 is fixedly connected to the inner wall of the middle part of the lower connecting shell 301, the top end of the oxygen delivery pipe 302 passes through the lower connecting shell 301 upward, a nozzle 303 is fixedly connected to one side of the bottom of the oxygen delivery pipe 302, the lower end of the nozzle 303 extends downward to the bottom of the lower connecting shell 301, a sealing ring 304 is fixedly connected to the outer side of the top surface of the lower connecting shell 301, the inner side of the top of the lower connecting shell 301 is movably connected to the outer reducer 101, and the top of the sealing ring 304 is connected to the outer reducer 101. The bottom is in movable contact, and both ends of the top of the lower connecting shell 301 are movably connected with bolts 305. The top of the bolt 305 is connected with the outer reducer 101, and the bottom of the bolt 305 passes through the lower connecting shell 301 and the outer wall is threaded with a nut 306. The middle outer wall of the lower connecting shell 301 is connected with the inner side of the inner reducer 102, and the top outer wall of the lower connecting shell 301 passes through the hollow part in the middle of the top surface of the upper connecting shell 201. A drainage cavity 106 is provided between the inner wall of the inner reducer 102 and the outer wall of the oxygen supply pipe 302. Figure 3 , Figure 5 As shown, the sealing ring 305 is made of silicone material, and the sealing ring 305 prevents gas or liquid leakage.

[0033] The taper angle of the lower ends of the outer walls of the outer reducer 101 and the inner reducer 102 is 1 to 5 degrees.

[0034] The working principle of this utility model:

[0035] When the device is in use, the water inlet pipe 202 and the drain pipe 203 are respectively connected to the external coolant pipeline, the coolant is input into the water inlet cavity 105 from the water inlet pipe 202, then the coolant flows into the water through hole 103 to reach the drain cavity 106, and finally the coolant is output through the drain pipe 203, the oxygen delivery pipe 302 is connected to the external gas pipeline, and the oxygen passes through the oxygen delivery pipe 302 and finally sprayed out from the nozzle 303;

[0036] When replacing the oxygen supply tube 302, unscrew the nut 306 and the bolt 305 on the side of the outer reducer 101, then pull the lower connecting shell 301 outward to separate the vertebral tube 1, and then pull the lower connecting shell 301 with the oxygen supply tube 302 out of the inner reducer 102;

[0037] Secondly, when the vertebral body tube 1 is disassembled as a whole, the pressure plate 207 is pushed, and the plate 204 moves the compression spring 205 in the upper connecting shell 201, and the plate 204 is gradually separated from the ball 206, and the ball 206 can move toward the plate 204. At this time, the outer reducer 101 and the upper connecting shell 201 can be separated, and the ball 206 shrinks into the upper connecting shell 201 and separates from the slot 104.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A variable diameter oxygen lance cone tube, comprising a cone tube as a whole (1), a pipeline structure (2) is arranged above the cone tube as a whole (1), and a gas transmission mechanism (3) is arranged below the pipeline structure (2); It is characterized in that Also includes: The pipeline structure (2) comprises an upper connecting shell (201), one side of the outer wall of the upper connecting shell (201) is connected to a water inlet pipe (202), the other end of the water inlet pipe (202) is connected to a drain pipe (203), and the top of the upper connecting shell (201) is hollowed out in the middle; The inner wall of the upper connection shell (201) and located below the water inlet pipe (202) and the drain pipe (203) are both slidably connected with a support plate (204), one side of the outer wall of the support plate (204) is set as an inclined surface, the other side of the outer wall of the support plate (204) passes through the upper connection shell (201) and is fixedly connected with a pressure plate (207), and the outer wall of the pressure plate (207) is slidably connected to the upper connection shell (201); The bottom of the support plate (204) is fixedly connected to a spring (205), the other end of the spring (205) is fixedly connected to the lower end of the inner wall of the upper connecting shell (201), and the support plate (204) is movably contacted with a ball (206) on one side of the inclined surface, the ball (206) is movably connected to the inner wall of the upper connecting shell (201) as a whole, and one end of the ball (206) passes through the inner side of the upper connecting shell (201).

2. The variable diameter oxygen lance cone tube according to claim 1, characterized in that: The vertebral tube as a whole (1) comprises an outer reducer (101), and both sides of the top of the outer wall of the outer reducer (101) are provided with slots (104). The outer side of the top of the outer reducer (101) is sleeved and connected to the lower end of the inner wall of the upper connecting shell (201), and the inner walls of the two slots (104) are respectively engaged and connected with two balls (206).

3. The variable diameter oxygen lance cone tube according to claim 2, characterized in that: The inner wall of the outer reducer (101) is fixedly connected to the inner reducer (102), a water hole (103) is provided at the lower end of the outer wall of the inner reducer (102), and a water inlet cavity (105) is provided between the inner wall of the outer reducer (101) and the outer wall of the inner reducer (102).

4. The variable diameter oxygen lance cone tube according to claim 1, characterized in that: The gas delivery mechanism (3) comprises a lower connecting shell (301), an oxygen delivery pipe (302) is fixedly connected to the inner wall of the middle part of the lower connecting shell (301), the top end of the oxygen delivery pipe (302) passes through the lower connecting shell (301) upwards, a nozzle (303) is fixedly connected to one side of the bottom of the oxygen delivery pipe (302), and the lower end of the nozzle (303) extends downwards to the bottom of the lower connecting shell (301).

5. The variable diameter oxygen lance cone tube according to claim 4, characterized in that: A sealing ring (304) is fixedly connected to the outer side of the top surface of the lower connecting shell (301); the inner side of the top of the lower connecting shell (301) is movably connected to the outer reducer (101); the top of the sealing ring (304) is in movably contact with the bottom of the outer reducer (101); bolts (305) are movably connected to both ends of the top of the lower connecting shell (301); the top of the bolt (305) is connected to the outer reducer (101); the bottom of the bolt (305) passes through the lower connecting shell (301) and the outer wall is threadedly connected to a nut (306).

6. The variable diameter oxygen lance cone tube according to claim 4, characterized in that: The middle outer wall of the lower connecting shell (301) is connected to the inner side of the inner reducer (102), the top outer wall of the lower connecting shell (301) passes through the hollowed-out middle portion of the top surface of the upper connecting shell (201), and a drainage cavity (106) is provided between the inner wall of the inner reducer (102) and the outer wall of the oxygen supply pipe (302).

7. The variable diameter oxygen lance cone tube according to claim 2, characterized in that: The taper of the lower ends of the outer walls of the outer reducer (101) and the inner reducer (102) is 1 to 5 degrees.

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