CN215906233U

CN215906233U - Blast furnace oxygen lance device with thermocouple

Info

Publication number: CN215906233U
Application number: CN202121874938.8U
Authority: CN
Inventors: 曹敬友; 张彦伟
Original assignee: Saint Gobain Pipeline System Co Ltd; Hangzhou Shengyu New Material Technology Co Ltd
Current assignee: Saint Gobain Pipeline System Co Ltd; Hangzhou Shengyu New Material Technology Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-25
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a blast furnace oxygen lance device with a thermocouple, and relates to the technical field of blast furnace oxygen lances. The blast furnace oxygen lance device with the thermocouple comprises a seamless steel pipe, wherein a drill rod head is arranged at the right end of the seamless steel pipe, an oxygen pipe joint is communicated with the seamless steel pipe, and a compressed air pipe joint is communicated with the seamless steel pipe. This take blast furnace oxygen rifle device of thermocouple through add the thermocouple on current equipment basis and rather than the body structure that the cooperation set up, has avoided the oxygen rifle to burn out to a great extent, has prevented simultaneously that the stave of taphole department from burning out, reduces the expense of cost when overhauing the frequency.

Description

Blast furnace oxygen lance device with thermocouple

Technical Field

The utility model relates to the technical field of blast furnace oxygen lances, in particular to a blast furnace oxygen lance device with a thermocouple.

Background

In the blast furnace iron-making production, after planned maintenance or unplanned damping down for a medium-long term, the temperature of iron slag in a hearth suddenly drops, and the hearth is heated as soon as possible in the early stage of blast furnace air supply and production recovery. In order to make the temperature in the furnace cylinder rise quickly and discharge the molten iron out of the furnace as soon as possible, a mode that an oxygen pipe directly extends into an iron notch to heat the furnace cylinder is generally used at present.

At present, after an oxygen lance extends into a furnace hearth, the oxygen lance is blocked or oxygen is not blown into the furnace hearth due to other reasons, so that the oxygen lance is frequently burnt out, and huge financial loss is caused due to the burning out of a cooling wall at an iron notch caused by excessive oxygen amount or short corrosion of the oxygen lance.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a blast furnace oxygen lance device with a thermocouple, which solves the problems that the oxygen lance is blocked after the oxygen lance extends into a furnace hearth or oxygen is not blown into the furnace hearth so that the oxygen lance is frequently burnt out, and huge financial loss is caused by the burning out of a cooling wall at an iron notch due to excessive oxygen amount or short corrosion of the oxygen lance.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a blast furnace oxygen rifle device of area thermocouple, includes seamless steel pipe, the right-hand member of seamless steel pipe is provided with the drill bit head, the last intercommunication of seamless steel pipe has the oxygen coupling, the last intercommunication of seamless steel pipe has the compressed air coupling, the bottom of seamless steel pipe and the right side welding that is located the oxygen coupling have nonrust steel pipe, the one end that seamless steel pipe was kept away from to nonrust steel pipe is provided with the thermocouple, the straight line that the center of a pipe of compressed air coupling locates is mutually perpendicular with the straight line that the center of a pipe of seamless steel pipe locates, the straight line that the center of a pipe of oxygen coupling locates is mutually perpendicular with the straight line that the center of a pipe of seamless steel pipe locates, the contained angle that the straight line that the center of a pipe of nonrust steel pipe locates and the straight line that the center of a pipe of seamless steel pipe locates is 30.

(III) advantageous effects

The utility model provides a blast furnace oxygen lance device with a thermocouple. The method has the following beneficial effects: this take blast furnace oxygen rifle device of thermocouple through add the thermocouple on current equipment basis and rather than the body structure that the cooperation set up, has avoided the oxygen rifle to burn out to a great extent, has prevented simultaneously that the stave of taphole department from burning out, reduces the expense of cost when overhauing the frequency.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. oxygen pipe connector, 2, compressed air pipe connector, 3, seamless steel pipe, 4, stainless steel pipe, 5, thermocouple, 6, drill rod head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a take blast furnace oxygen rifle device of thermocouple, including seamless steel pipe 3, the right-hand member of seamless steel pipe 3 is provided with drill bit head 6, the intercommunication has oxygen coupling 1 on the seamless steel pipe 3, the intercommunication has compressed air coupling 2 on the seamless steel pipe 3, the bottom of seamless steel pipe 3 and the right side welding that is located oxygen coupling 1 have nonrust steel pipe 4, the one end that seamless steel pipe 3 was kept away from to nonrust steel pipe 4 is provided with thermocouple 5, the straight line that the pipe of compressed air coupling 2 pipe locates is mutually perpendicular with the straight line that the pipe of the 3 pipe of seamless steel pipe locates, the straight line that pipe of the pipe of oxygen coupling 1 locates is mutually perpendicular with the straight line that the pipe of the 3 pipe of seamless steel pipe locates, the contained angle that the straight line that the pipe of the 4 pipe of nonrust steel pipe locates and the straight line that the pipe of the 3 pipe of seamless steel pipe locates is 30.

The using method comprises the following steps:

before the blast furnace is re-ventilated, opening the iron notch by using an opening machine, and then plugging the iron notch by using water stemming;

respectively connecting oxygen and air metal hoses to the oxygen lance, and opening air and oxygen valves;

using a tapping machine to drive the oxygen lance into an iron notch;

and connecting a thermocouple external screen, and recording the thermal electric even data at regular time. Once the couple temperature rises sharply, the lance needs to be pulled out immediately.

To sum up, the blast furnace oxygen lance device with the thermocouple avoids oxygen lance burnout to a great extent by additionally arranging the thermocouple and the pipe body structure matched with the thermocouple on the basis of the existing equipment, prevents the burnout of the cooling wall at the iron notch, reduces maintenance frequency and reduces cost expenditure.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take blast furnace oxygen rifle device of thermocouple, includes seamless steel pipe (3), the right-hand member of seamless steel pipe (3) is provided with drill rod head (6), the intercommunication has oxygen coupling (1), its characterized in that on seamless steel pipe (3): the utility model discloses a seamless steel pipe, including seamless steel pipe (3), intercommunication has compressed air pipe joint (2) on seamless steel pipe (3), the right side welding that the bottom of seamless steel pipe (3) just is located oxygen pipe joint (1) has nonrust steel pipe (4), the one end that seamless steel pipe (3) were kept away from in nonrust steel pipe (4) is provided with thermocouple (5), compressed air pipe joint (2) pipe place straight line and seamless steel pipe (3) pipe place straight line mutually perpendicular, oxygen pipe joint (1) pipe place straight line and seamless steel pipe (3) pipe place straight line mutually perpendicular, the contained angle that nonrust steel pipe (4) pipe place straight line and seamless steel pipe (3) pipe place straight line were managed to the pipe is 30.