CN220012678U

CN220012678U - Blast furnace iron notch oxygen lance with temperature measuring device

Info

Publication number: CN220012678U
Application number: CN202321499671.8U
Authority: CN
Inventors: 禹浩诺; 肖国才
Original assignee: Nanjing Zhongxin Information Technology Co ltd
Current assignee: Nanjing Zhongxin Information Technology Co ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-11-14
Anticipated expiration: 2033-06-13

Abstract

The utility model relates to the technical field of blast furnace tap hole oxygen lances, and discloses a blast furnace tap hole oxygen lance with a temperature measuring device, which comprises an oxygen lance main body, wherein the oxygen lance main body comprises an outer layer pipe, an inner layer pipe, a sealing plate, a drill shank, an outer wire joint, an inner wire joint and a thermocouple; the sealing plate is installed at the other end of outer tube, the drill shank is installed at the opposite side of sealing plate, the outer thread joint is through interior thread joint and thermocouple threaded connection, outer thread joint fixed mounting is in the outer tube outside, and communicates with outer tube inside, the inlayer pipe sets up the inside at outer tube. According to the utility model, the degree of burning loss of the oxygen lance can be judged through the temperature change of the thermocouple when the oxygen lance is used, so that the oxygen lance can be replaced in time; such as a sudden rise in temperature of the thermocouple (the sudden rise in temperature being greater than the temperature at which the lance nozzle and lance tube melt), indicating that the lance may be burned.

Description

Blast furnace iron notch oxygen lance with temperature measuring device

Technical Field

The utility model relates to the technical field of blast furnace taphole oxygen guns, in particular to a blast furnace taphole oxygen gun with a temperature measuring device.

Background

The blast furnace is subjected to long-time damping down due to production faults, accidents or equipment maintenance, updating and the like, so that slag iron temperature in the blast furnace is too low, slag iron fluidity is poor, and serious accidents such as hearth freezing and the like even occur. The hearth temperature can be quickly increased by using the blast furnace taphole oxygen lance, so that the fluidity of slag iron is improved, the slag iron can be smoothly discharged out of the blast furnace, the workload in front of the furnace is greatly reduced, and the recovery time of the furnace condition is shortened.

In the process of implementing the present utility model, the inventor finds that at least the following problems in the prior art are not solved: in the prior art, in the use process, the ablation condition of the oxygen lance cannot be known in time, the excessive ablation condition of the oxygen lance can occur, and the risk of iron notch burning is high.

Disclosure of Invention

The utility model aims to provide a blast furnace tap hole oxygen lance with a temperature measuring device, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the blast furnace tap hole oxygen lance with the temperature measuring device comprises an oxygen lance main body, wherein the oxygen lance main body comprises an outer layer pipe, an inner layer pipe, a sealing plate, a drill shank, an outer wire joint, an inner wire joint and a thermocouple;

the sealing plate is installed at the other end of outer tube, the drill shank is installed at the opposite side of sealing plate, the outer tube is connected through internal thread joint and thermocouple threaded connection, outer thread joint fixed mounting is in the outer tube outside, and communicates with the outer tube is inside, the inlayer pipe sets up the inside at the outer tube, the thermocouple is installed on the inner thread joint, the inner thread joint connects soon with the outer thread joint, the probe of thermocouple runs through the outer tube through inner thread joint and outer thread joint, and extends to in the inlayer pipe through the one end of inlayer pipe.

As a preferred implementation mode of the utility model, the novel conical head structure further comprises a conical head, a blind hole is formed in one side of the conical head, a plug is arranged in the blind hole, and one end of the outer layer pipe is connected with one side of the conical head, on which the plug is mounted.

As a preferred embodiment of the present utility model, the outer tube is internally provided with a mandrel, and the inner tube horizontally penetrates the mandrel.

As a preferred embodiment of the utility model, the top of the outer tube is provided with a compressed air interface and an oxygen interface, and the compressed air interface and the oxygen interface are respectively positioned at two sides of the mandrel.

Compared with the prior art, the utility model provides the blast furnace iron notch oxygen lance with the temperature measuring device, which has the following beneficial effects:

according to the blast furnace iron notch oxygen lance with the temperature measuring device, when the blast furnace iron notch oxygen lance is used, the burning degree of the oxygen lance can be judged through the temperature change of the thermocouple so as to replace the oxygen lance in time; such as a sudden rise in temperature of the thermocouple (the sudden rise in temperature being greater than the temperature at which the lance nozzle and lance tube melt), indicating that the lance may be burned.

This blast furnace taphole oxygen rifle with temperature measuring device through conical head and the end cap that sets up, can block stemming or slag in the taphole pore in the front end on the one hand, avoids stemming (or slag) in the taphole to get into in the inlayer pipe, avoids blocking up the air flue, guarantees the effect of ventilating.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a front view of a blast furnace taphole lance with a temperature measuring device according to the present utility model.

In the figure: 1. a conical head; 2. a plug; 3. an outer layer tube; 4. an inner layer tube; 5. a compressed air interface; 6. a mandrel; 7. an oxygen interface; 8. a sealing plate; 9. a drill shank; 11. an external thread joint; 12. an inner wire joint; 13. and a thermocouple.

Detailed Description

In order to better understand the purpose, structure and function of the present utility model, a blast furnace tap hole oxygen lance with a temperature measuring device according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the present utility model provides a technical solution: the blast furnace tap hole oxygen lance with the temperature measuring device comprises an oxygen lance main body, wherein the oxygen lance main body comprises an outer layer pipe 3, an inner layer pipe 4, a sealing plate 8, a drill shank 9, an outer wire joint 11, an inner wire joint 12 and a thermocouple 13;

the sealing plate 8 is arranged at the other end of the outer layer pipe 3, the drill shank 9 is arranged at the other side of the sealing plate 8, the drill shank 9 is welded and fixed on the sealing plate 8, corresponding specification and size can be configured according to a tap tapping machine, the outer wire joint 11 is in threaded connection with the thermocouple 13 through the inner wire joint 12, the outer wire joint 11 is welded at the outer side of the outer layer pipe 3 and is communicated with the inner part of the outer layer pipe 3, the inner layer pipe 4 is arranged in the outer layer pipe 3, the thermocouple 13 is arranged on the inner wire joint 12, the inner wire joint 12 is screwed with the outer wire joint 11, a probe of the thermocouple 13 penetrates through the outer layer pipe 3 through the inner wire joint 12 and the outer wire joint 11, and extends into the inner layer pipe 4 through one end of the inner layer pipe 4, the probe length of the thermocouple 13 is determined according to the length of an oxygen lance, and the thermocouple 13 is conveniently arranged on the oxygen lance body through the inner wire joint 12 and the outer wire joint 11.

When the oxygen lance is used, the burning loss degree of the oxygen lance can be judged through the temperature change of the thermocouple 13 so as to replace the oxygen lance in time; such as a sudden increase in the temperature of thermocouple 13 (the sudden increase in temperature being greater than the temperature at which the lance nozzle and lance tube melt), indicates that there may be a burn out of the lance.

In this embodiment, still include the conical head 1, the blind hole has been seted up to one side of conical head 1, be provided with end cap 2 in the blind hole, the one end of outer pipe 3 is connected with one side of conical head 1 installation end cap 2, can block stemming or slag in the sidetrack pore at the front end on the one hand, avoids stemming (or slag) in the sidetrack to get into in the outer pipe 3, avoids blocking up the air flue, guarantees the ventilation effect.

In this embodiment, the mandrel 6 is disposed inside the outer tube 3, and the inner tube 4 horizontally penetrates the mandrel 6.

In this embodiment, a compressed air interface 5 and an oxygen interface 7 are disposed at the top of the outer tube 3, and the compressed air interface 5 and the oxygen interface 7 are respectively located at two sides of the mandrel 6.

Working principle: after the oxygen lance main body is driven into the blast furnace from the iron notch, compressed air and oxygen are respectively introduced from the compressed air interface 5 and the oxygen interface 7, so that substances such as coke and the like in the furnace are combusted, the oxygen lance outer layer pipe 3 and the oxygen lance inner layer pipe 4 can be continuously corroded in the combustion process, the oxygen lance cannot be continuously used after being corroded to a certain extent (namely, the length of the oxygen lance is shortened), otherwise, a large iron notch burning risk exists, a thermocouple 13 is added, after temperature measurement, whether the temperature measuring point position is corroded or not can be known, once the temperature measuring point temperature value is high or fails, the corroded temperature measuring point position is reflected, the iron notch is required to be plugged by pulling out the oxygen lance main body, and the occurrence of accidents is avoided.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a blast furnace iron notch oxygen rifle with temperature measuring device, includes oxygen rifle main part, its characterized in that: the oxygen lance main body comprises an outer layer pipe (3), an inner layer pipe (4), a sealing plate (8), a drill shank (9), an outer wire joint (11), an inner wire joint (12) and a thermocouple (13);

the utility model discloses a high-temperature electric-pressure welding machine, including outer tube (3), sealing plate (8), drill shank (9), outer tube (3), inner tube (4), thermocouple (13), outer tube (3) and inner tube (4), sealing plate (8) are installed at the other end of outer tube (3), drill shank (9) are installed at the opposite side of sealing plate (8), outer tube (3) are run through inner tube (12) and thermocouple (13) threaded connection to outer tube (11) in outer tube (11), outer tube (3) are fixed mounting in outer tube (3), and with the inside intercommunication of outer tube (3), inner tube (4) set up in the inside of outer tube (3), thermocouple (13) are installed on inner tube (12), inner tube (12) and outer tube (11) are screwed, the probe of thermocouple (13) runs through outer tube (3) through inner tube (12) and outer tube (11), and extends to in inner tube (4) through the one end of inner tube (4).

2. The blast furnace taphole oxygen lance with temperature measuring device of claim 1 wherein: still include conical head (1), the blind hole has been seted up to one side of conical head (1), be provided with end cap (2) in the blind hole, the one end of outer pipe (3) is connected with one side of conical head (1) installation end cap (2).

3. The blast furnace taphole oxygen lance with temperature measuring device of claim 1 wherein: the inside of outer layer pipe (3) is provided with dabber (6), inlayer pipe (4) horizontal run through dabber (6).

4. A blast furnace taphole oxygen lance with a temperature measuring device according to claim 2, characterized in that: the top of outer tube (3) is provided with compressed air interface (5) and oxygen interface (7), compressed air interface (5) and oxygen interface (7) are located the both sides of dabber (6) respectively.