CN218115481U - Air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen supply - Google Patents
Air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen supply Download PDFInfo
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- CN218115481U CN218115481U CN202221860657.1U CN202221860657U CN218115481U CN 218115481 U CN218115481 U CN 218115481U CN 202221860657 U CN202221860657 U CN 202221860657U CN 218115481 U CN218115481 U CN 218115481U
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Abstract
The utility model provides an air-cooled high temperature resistant oxygen lance for blast furnace oxygen supply, include: a connecting portion; the handle is arranged on the connecting part; the oxygen pipe is arranged on the connecting part and is a hollow pipeline; the cooling pipe is arranged on the connecting part and is a hollow pipeline; the oxygen epitaxial access port is arranged on the connecting part and communicated with the inside of the oxygen pipe; the cooling gas epitaxial access port is arranged on the connecting part and communicated with the inside of the cooling pipe; the fixing part is arranged at one end of the handle far away from the connecting part. When the oxygen lance blows oxygen, cooling gas passes through a cooling channel between the oxygen pipe and the cooling pipe to take out heat of the oxygen pipe and the cooling pipe. The oxygen pipe is cooled and radiated, so that the oxygen pipe is not easy to be damaged. The using time of the oxygen tube is increased, and the consumption is reduced.
Description
Technical Field
The utility model relates to the field of blast furnace systems of iron works, in particular to an air-cooled high-temperature-resistant oxygen lance for oxygen delivery of a blast furnace.
Background
The oxygen lance is mainly applied to the steel industry, the metallurgy industry and the like. The blast furnace damping-down means that the supply of air into the blast furnace is temporarily stopped. The furnace stuffiness of the blast furnace means that the blast furnace stops production for a long time and does not need to be replaced or repaired. The furnace is a state (combustion, air supply, furnace change and furnace blank) of the blast furnace matching hot blast stove, and the furnace blank is a state that the hot blast stove stops combustion and keeps warm. The blast furnace is inactive in long-term down draught or furnace hearth stuffiness, the air intake in the furnace is small, people are required to hold the oxygen pipe by hands to blow oxygen into the furnace from the taphole duct, the coke heat is increased, and the hearth activity is improved. Because the temperature in the blast furnace is high, the oxygen tube can be melted and damaged after the blast furnace is not used for a long time. A large number of oxygen lance pipes are consumed each time the furnace is opened, and the hidden danger of high-temperature burn of personnel is easy to happen.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the utility model provides an air-cooled high temperature resistant oxygen lance for blast furnace oxygen feeding, which aims to solve the technical problem that the blast furnace is high in temperature and the oxygen lance is not damaged for a long time.
In order to achieve the above and other related objects, the present invention provides an air-cooled high temperature resistant oxygen lance for blast furnace oxygen supply, comprising: the oxygen tube, the cooling tube, the oxygen epitaxy inlet, the cooling gas epitaxy inlet and the fixing part are arranged on the connecting part; the handle is arranged on the connecting part; the oxygen pipe is arranged on the connecting part and is a hollow pipeline; the cooling pipe is arranged on the connecting part and is a hollow pipeline; the oxygen epitaxial access port is arranged on the connecting part and communicated with the inside of the oxygen pipe; the cooling gas epitaxial access port is arranged on the connecting part and communicated with the inside of the cooling pipe; the fixing part is arranged at one end of the handle far away from the connecting part.
In an example of the present invention, the handle is hollow, and an exhaust hole is formed at an end of the handle away from the connecting portion.
In an example of the present invention, the cooling tube has a diameter larger than that of the oxygen tube, and the oxygen tube is inserted into the cooling tube.
In an example of the present invention, the oxygen pipe is inserted into the cooling pipe, and the inner cavity of the cooling pipe outside the oxygen pipe has a gap for conducting cooling gas.
In an example of the present invention, the sealing plug is disposed between the cooling tube and the oxygen tube and away from one end of the connecting portion.
The utility model discloses an in the example, cooling tube and oxygen hose are circular pipeline, the cooling tube with the oxygen hose is coaxial to be set up to at the cooling tube inner wall with be formed with annular cavity between the oxygen hose outer wall, the one end that annular cavity deviates from connecting portion is provided with the shutoff board, and two steel sheets that are provided with in the annular cavity are cut off, and two steel sheets keep apart into two half chambeies with annular cavity, two half chambeies are provided with the intercommunication opening in the one side that deviates from connecting portion, through the intercommunication opening forms a cooling channel.
In an example of the present invention, the one end of the cooling channel is connected to the inlet through the extension of the connecting portion and the cooling gas, and the other end of the cooling channel is connected to the handle through the connecting portion, so that the cooling gas in the cooling channel is discharged through the hollow portion of the handle.
In an example of the present invention, the gas in the cooling channel flows in from the cooling gas extension inlet in a one-way flow manner, and the transfer ring is discharged from the handle hollow in the cooling channel.
In an example of the present invention, the length of the cooling pipe and the oxygen pipe is not less than 2.6 meters.
The utility model discloses when oxygen lance oxygen blast, cool down the heat dissipation to the oxygen pipe, make the oxygen pipe difficult to melt bad. The using time of the oxygen tube is increased, and the consumption is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a partial cross-sectional view of an embodiment of the present invention;
fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2.
Description of the element reference numerals
100. A connecting portion;
200. a handle;
300. an oxygen tube;
400. a cooling tube;
500. an oxygen epitaxial access port;
600. cooling the gas epitaxial access port;
700. a fixed part;
410. a plugging plate;
420. a steel plate;
430. a first half-cavity;
440. a second cavity half;
450. a communication opening.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any number between the two endpoints are optional unless otherwise stated in the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are intended to describe the same, and all methods, apparatus and materials similar or equivalent to those described herein may be used in the practice of this invention.
It should be understood that the terms "upper", "lower", "left", "right", "middle" and "one" used herein are for clarity of description, and are not intended to limit the scope of the invention, but rather the scope of the invention.
Referring to fig. 1 to 3, the present invention provides an air-cooled high temperature resistant oxygen lance for supplying oxygen to a blast furnace, comprising: connecting portion 100, handle 200, oxygen pipe 300, cooling tube 400, oxygen extension inlet 500, oxygen cooling gas extension inlet 600 and fixed part 700.
The handle 200 is arranged on the connecting part 100; an oxygen pipe 300 is disposed on the connection portion 100, wherein the oxygen pipe 300 is a hollow pipeline; the cooling pipe 400 is disposed on the connection portion 100, and the cooling pipe 400 is a hollow pipe; the oxygen epitaxial inlet 500 is arranged on the connecting part 100 and communicated with the inside of the oxygen tube 300; the oxygen cooling gas epitaxial inlet 600 is provided in the connection portion 100 and communicates with the inside of the cooling pipe 400; the fixing portion 700 is disposed at an end of the handle 200 away from the connecting portion 100.
In an embodiment of the present invention, the handle 200 is hollow, and an air vent (not shown) is disposed at an end away from the connecting portion 100. The fixing manner of the handle 200 and the connecting portion 100 is not limited, and may be, for example, welding, or fixing with a screw thread. The fixing mode is not limited, but the air tightness of the channel in the handle is ensured.
In an embodiment of the present invention, the diameter of the cooling tube 400 is larger than that of the oxygen tube 300, and the oxygen tube 300 can be inserted into the cooling tube 400. After the oxygen tube 300 is inserted into the cooling tube 400, a gap is formed between the outer wall of the oxygen tube 300 and the inner wall of the cooling tube 400, and the cooling gas can be conducted through the gap. At the end remote from the connection 100, the space between the inner wall of the cooling tube 400 and the outer wall of the oxygen tube 300 is sealed, for example, by welding, so that the cooling gas in the cooling tube 400 cannot flow out from this end. The fixing method of the oxygen tube 300, the cooling tube 400 and the connection part 100 is not limited, and a common fixing method such as welding may be used, but airtightness is required to be ensured. No gas leaks out. The end far from the connection part 100 also ensures airtightness, and the gas in the cooling tube 400 does not flow out at this end, but flows only in the cooling tube 400 through a passage outside the oxygen tube 300.
Referring to fig. 2, in an embodiment of the present invention, the cooling pipe 400 and the oxygen pipe 300 are both circular pipes, the cooling pipe 400 and the oxygen pipe 300 are coaxially disposed, an annular chamber is formed between an inner wall of the cooling pipe 400 and an outer wall of the oxygen pipe 300, one end of the annular chamber facing away from the connecting portion 100 is provided with a blocking plate 410, two steel plates 420 are disposed in the annular chamber to separate the annular chamber into two half chambers, which are respectively marked as a first half chamber 430 and a second half chamber 440, wherein the two half chambers are provided with a communication opening 450 on one side facing away from the connecting portion 100, and a cooling channel is formed through the communication opening 450. The cooling pipe 400 is installed on the connection portion and communicated with the first half cavity 430, the exhaust hole on the handle is communicated with the second half cavity 440, and the cooling gas in the cooling pipe 400 flows into the second half cavity 440 from the first half cavity 430 and is exhausted through the exhaust hole on the handle 200.
The connection between the oxygen cooling gas extension inlet 600 and the cooling pipe 400 is not limited, and may be, for example, a welded connection. The gas tightness between cooling tube 400 and the oxygen cooling gas epitaxial inlet 600 is good, and cooling gas can smoothly flow into cooling tube 400 from oxygen cooling gas epitaxial inlet 600, can not spill. The connection between the cooling pipe 400 and the handle 200 is not limited much, and in order to ensure airtightness at the connection position, the cooling gas in the cooling pipe 400 flows to the handle 200 and is then discharged. The lengths of the cooling pipe 400 and the oxygen pipe 300 are not less than 2.6 meters.
In an embodiment of the present invention, the fixing portion 700 is not limited, for example, it can be a screw thread or a common fixing manner such as inserting and fixing.
In an embodiment of the present invention, the cooling gas uses compressed air, and the fixing portion 700 uses screw threads. The connection portion 100 uses a disc-shaped flange. The oxygen pipe 300 is sleeved in the cooling pipe 400, and the end far away from the flange seals the space between the cooling pipe 400 and the oxygen pipe 300 through a sealing plate 410, so that the cooling gas does not flow out at the end, and only the oxygen flows out from the end. The oxygen pipe 300 and the cooling pipe 400 are separated by a steel plate, and airtightness is ensured. A communication opening is left at the end remote from the flange. When the blast furnace is stopped down for a long time or the furnace is not covered, the furnace hearth is inactive, the air intake in the furnace is small, and oxygen needs to be fed, the handle 200 is arranged on the rock drill through the threaded fixed end. High-purity oxygen is introduced into the oxygen epitaxial inlet 500, and compressed air is introduced into the cooling gas epitaxial inlet 600. Operating the rock drill to feed the oxygen lance into the blast furnace. Rock wool is arranged at the flange to seal the blast furnace and prevent the fire of the blast furnace from overflowing. The oxygen and compressed air switches are opened. Oxygen is blown into the blast furnace from the oxygen epitaxial inlet 500 through the oxygen pipe 300, so that the combustion of the flame of the blast furnace is accelerated, and the activity degree of the furnace hearth is improved. The cooling air flows into the cooling channel between the oxygen tube 300 and the cooling tube 400 from the oxygen cooling gas extension inlet 600 and then is discharged from the exhaust hole of the handle 200, and in this process, the temperature of the compressed air is lower than that of the oxygen tube 300 and the cooling tube 400. The compressed air absorbs heat from the oxygen pipe 300 and the cooling pipe 400 during the flowing process of the cooling passage. The compressed air cools and dissipates the heat of the oxygen tube 300 and the cooling tube 400, and brings out the heat. The temperature of the oxygen tube 300 and the cooling tube 400 rises slowly and does not melt in a short time.
The utility model relates to an air-cooled high temperature resistant oxygen rifle for blast furnace send oxygen, when the oxygen rifle oxygen blast, cooling gas passes through the cooling channel between oxygen hose and the cooling tube, takes out the heat of oxygen hose and cooling tube. The oxygen pipe is cooled and radiated, so that the oxygen pipe is not easy to be damaged. The using time of the oxygen tube is increased, and the consumption is reduced. Therefore, the utility model discloses thereby effectively overcome some practical problems among the prior art and had very high use value and use meaning. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.
Claims (9)
1. An air-cooled high-temperature-resistant oxygen lance for feeding oxygen to a blast furnace is characterized by comprising:
a connecting portion;
the handle is arranged on the connecting part;
the oxygen pipe is arranged on the connecting part and is a hollow pipeline;
the cooling pipe is arranged on the connecting part and is a hollow pipeline;
the oxygen epitaxial access port is arranged on the connecting part and communicated with the inside of the oxygen pipe;
the cooling gas epitaxial access port is arranged on the connecting part and communicated with the inside of the cooling pipe;
the fixing part is arranged at one end of the handle far away from the connecting part.
2. The air-cooled high temperature resistant oxygen lance as claimed in claim 1 wherein the handle is hollow and has an exhaust hole at an end remote from the connection portion.
3. The air-cooled refractory lance as claimed in claim 1 wherein the cooling tube is larger in diameter than the oxygen tube into which the oxygen tube is inserted.
4. The air-cooled refractory oxygen lance as claimed in claim 1, wherein the oxygen tube is inserted into a cooling tube, and the inner cavity of the cooling tube outside the oxygen tube has a gap for conducting cooling gas.
5. The air-cooled high temperature resistant oxygen lance for blast furnace oxygen supply according to claim 1, wherein a seal is formed between the cooling pipe and the oxygen pipe at the end far away from the connecting part.
6. The air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen feeding according to claim 1, wherein the cooling pipe and the oxygen pipe are both circular pipelines, the cooling pipe and the oxygen pipe are coaxially arranged, an annular chamber is formed between the inner wall of the cooling pipe and the outer wall of the oxygen pipe, one end of the annular chamber, which is far away from the connecting part, is provided with a blocking plate, two steel plate partitions are arranged in the annular chamber, the annular chamber is divided into two half chambers by the two steel plates, the two half chambers are provided with communication openings on the sides, which are far away from the connecting part, and a cooling channel is formed through the communication openings.
7. The air-cooled high temperature resistant oxygen lance for blast furnace oxygen feeding as claimed in claim 6, wherein one end of the cooling channel is connected to the cooling gas extension inlet at the connecting part, and the other end of the cooling channel is connected to the handle at the connecting part, so that the cooling gas in the cooling channel is discharged through the hollow of the handle.
8. The air-cooled refractory oxygen lance as claimed in claim 6 wherein the cooling channel is one-way flow and is fed from the outer inlet of the cooling gas and the cooling channel is turned round and discharged from the hollow handle.
9. The air-cooled high temperature resistant oxygen lance for blast furnace oxygen feeding as claimed in claim 6, wherein the length of the cooling pipe and the oxygen pipe is not less than 2.6 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860657.1U CN218115481U (en) | 2022-07-19 | 2022-07-19 | Air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860657.1U CN218115481U (en) | 2022-07-19 | 2022-07-19 | Air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218115481U true CN218115481U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221860657.1U Active CN218115481U (en) | 2022-07-19 | 2022-07-19 | Air-cooled high-temperature-resistant oxygen lance for blast furnace oxygen supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218115481U (en) |
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2022
- 2022-07-19 CN CN202221860657.1U patent/CN218115481U/en active Active
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