CN218290978U - Assembled blast furnace coal injection gun - Google Patents

Abstract

The utility model discloses an assembled blast furnace coal injection rifle, include the gas admission pipe that carries out the intercommunication through tee junction spare, buggy admission pipe and buggy blowout pipe, the last cooperation buggy blowout pipe of tee junction spare is provided with the installation sleeve pipe, it has the honeycomb duct to peg graft in the installation sleeve pipe, the inner wall top spaced of honeycomb duct is provided with a plurality of water conservancy diversion muscle, the honeycomb duct is provided with the connection pad in the one end of keeping away from tee junction spare, the connection pad centre gripping sets up between buggy blowout pipe and installation sleeve pipe and the three passes through bolt assembly and realizes detachable and be connected. The utility model discloses wholly adopt detachable assembled structure for the comparatively serious honeycomb duct of wearing and tearing consumption has changed into the structure that can carry out the dismouting alone by traditional welded fastening structure, great reduction the maintenance cost, avoided the waste of other structures that do not have the damage, and the whole dismouting flow of honeycomb duct is very simple, and easily operation does benefit to the popular use.

Description

Assembled blast furnace coal injection gun

Technical Field

The utility model relates to a blast furnace coal injection device technical field especially relates to an assembled blast furnace coal injection rifle.

Background

The blast furnace coal injection has become the key technology of the current steel industry development, for the blast furnace coal injection system, the coal injection gun is a vital structure, the structure of the traditional coal injection gun is shown in figure 1, which comprises a tee joint part 1-1, a coal powder inlet pipe 1-2, an air inlet pipe 1-3 and a coal powder spray pipe 1-4, when in work, compressed gas entering through the air inlet pipe 1-3 and coal powder entering through the coal powder inlet pipe 1-2 are mixed at the tee joint part 1-1, and then the coal powder is sprayed out from the coal powder spray pipe 1-4, in the structure, because of the arrangement of an included angle between the air inlet pipe 1-3 and the coal powder spray pipe 1-4, the compressed gas can form turbulent flow at the top of the coal powder spray pipe 1-4 after colliding with the bottom of the tee joint part 1-1, the turbulent flow can influence the smoothness of the coal powder flow in the coal powder spray pipe 1-4, and further cause the poor diffusion effect after the coal powder is sprayed out, and needs to be improved urgently.

In order to solve the problems, the company provides an improved scheme, as shown in fig. 2 and fig. 3, a flow guide pipe 1-5 is additionally arranged between a pulverized coal spray pipe 1-4 and a three-way part 1-1, the inner wall of the flow guide pipe 1-5 is arranged in parallel with the pulverized coal spray pipe 1-4 and the three-way part 1-1, a plurality of flow guide ribs 1-6 are arranged at the top of the flow guide pipe 1-5 in parallel, flow guide channels 1-7 are formed between the flow guide ribs 1-6, by the structure, pulverized coal airflow reflected to the top of the flow guide pipe 1-5 through the bottom of the three-way part 1-1 can be well guided, turbulence is avoided, smoothness of the pulverized coal airflow flowing in the pulverized coal spray pipe 1-4 subsequently is greatly improved, fine diffusion effect of the pulverized coal sprayed out through the pulverized coal spray pipe can be achieved, in the structure, because the pulverized coal continuously washes the flow guide ribs 1-6 at high speed, the flow guide ribs 1-6 are gradually worn, the flow guide effect is reduced, even the flow guide effect is lost, even the whole flow guide ribs 1-4 and the flow guide effect is greatly lost, even if the structure is seriously damaged due to the fact that the pulverized coal spray pipe 1-4 and the pulverized coal spray pipe 1-1 is fixedly connected in a welding mode, the later stage is seriously changed, the problem is seriously caused, and the problem is seriously occurs, and the problem that the later stage of the nozzle is seriously occurs, the problem that the nozzle is seriously occurs, and the problem is seriously occurs, even if the structure is seriously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to avoid the disadvantages of the prior art and provide an assembled blast furnace coal injection gun, thereby effectively solving the disadvantages existing in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an assembled blast furnace coal injection rifle, includes and carries out the gas admission pipe, buggy admission pipe and the buggy blowout pipe that communicate through tee junction spare, buggy admission pipe and the coaxial setting of buggy blowout pipe, the last cooperation buggy blowout pipe of tee junction spare is provided with the installation sleeve pipe, and the interpolation of installation sleeve pipe has the honeycomb duct, and the inner wall top spaced of honeycomb duct is provided with a plurality of water conservancy diversion muscle, and the water conservancy diversion muscle extends the setting along the axial of honeycomb duct, and the honeycomb duct is provided with the connection pad in the one end of keeping away from tee junction spare, the connection pad centre gripping set up in between buggy blowout pipe and the installation sleeve pipe and the three realizes through bolt assembly that detachable is connected.

Furthermore, the inner walls of the three-way connecting piece, the pulverized coal spraying pipe and the flow guide pipe are arranged in parallel and level.

Further, the installation sleeve is welded and fixed with the three-way connecting piece, and the three-way connecting piece is provided with an installation groove in a matched mode.

Furthermore, a gap is arranged between the installation sleeve and the flow guide pipe.

Furthermore, the outside of honeycomb duct is provided with a plurality of brace rods along the even circumference, and the brace rod extends to the other end by the one end of honeycomb duct, the brace rod with the installation sleeve contact sets up.

Furthermore, the honeycomb duct, the flow guide rib and the connecting disc are of an integrated structure.

Further, a first connecting flange is arranged at the end part of the mounting sleeve, a second connecting flange is arranged at the end part of the pulverized coal spraying pipe, and the first connecting flange, the second connecting flange and the connecting disc are connected through the bolt assembly.

Furthermore, high-temperature-resistant sealing gaskets are arranged between the first connecting flange and the connecting disc and between the second connecting flange and the connecting disc.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses wholly adopt detachable assembled structure for the comparatively serious honeycomb duct of wearing and tearing consumption has changed into the structure that can carry out the dismouting alone by traditional welded fastening structure, great reduction the maintenance cost, avoided the waste of other structures that do not have the damage, and the whole dismouting flow of honeycomb duct is very simple, and easily operation does benefit to the popular use.

Drawings

FIG. 1 is a schematic diagram of a prior art coal injection lance;

FIG. 2 is a schematic view of a structurally modified coal injection lance of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of an embodiment of the present invention;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

fig. 7 is a sectional view taken along the direction D-D in fig. 4.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 2-7, this embodiment an assembled blast furnace coal injection rifle, include the gas admission pipe 2 that carries out the intercommunication through tee junction spare 1, buggy admission pipe 3 and buggy blowout pipe 4, buggy admission pipe 3 and the coaxial setting of buggy blowout pipe 4, the contained angle between gas admission pipe 2 and buggy admission pipe 3 is about 60, wherein tee junction spare 1 all realizes fixed connection through welded mode and gas admission pipe 2 and buggy admission pipe 3, last cooperation gas admission pipe 2 and the buggy admission pipe 3 of respectively cooperating of tee junction spare 1 are provided with the installation constant head tank, in order to realize closely reliable cooperation effect, improve structural strength.

The installation sleeve 5 is arranged on the three-way connecting piece 1 in a matched mode with the pulverized coal spraying pipe 4, the guide pipe 6 is inserted in the installation sleeve 5, a plurality of guide ribs 601 are arranged at the top of the inner wall of the guide pipe 6 at intervals, the guide ribs 601 extend along the axial direction of the guide pipe 6 and are preferably arranged, the guide ribs 601 extend to the other end from one end of the guide pipe 6, as shown in fig. 7, a guide channel is formed between the guide ribs 601, the guide ribs 601 on two sides are lower than the guide ribs in the middle and are arranged to achieve a better guide effect, the guide pipe 6 is provided with a connecting disc 602 at one end far away from the three-way connecting piece 1, the connecting disc 602 is clamped between the pulverized coal spraying pipe 4 and the installation sleeve 5, the three is detachably connected through a bolt assembly 7, the pulverized coal spraying pipe 4 is separated from the installation sleeve 5 by dismantling the bolt assembly 7, the guide pipe 6 can be directly extracted from the installation sleeve 5, the guide pipe 6 seriously worn guide pipe 6 can be independently replaced, maintenance cost is greatly reduced, waste of other undamaged structures is avoided, the whole flow of the guide pipe 6 is very simple and easy to operate, and the dismounting is strong in practicability.

The inner wall parallel and level of tee junction spare 1, buggy blowout pipe 4 and honeycomb duct 6 sets up, as shown in fig. 6, and the tip of honeycomb duct 6 supports and leans on tee junction spare 1, in addition, if there is a small amount of manufacturing error, can set up gasket or high temperature resistant cushion between tee junction spare 1 and honeycomb duct 6 and fill the clearance, guarantees the smooth transition between honeycomb duct 6 and the tee junction spare 1.

The installing sleeve 5 is welded and fixed with the three-way connecting piece 1, and the three-way connecting piece 1 is matched with the installing sleeve 5 to be provided with an installing groove.

Be provided with the clearance between installation sleeve 5 and the honeycomb duct 6, through setting up the clearance, the dismouting of completion honeycomb duct 6 that can be more convenient, avoid the in-process of using because reasons such as expend with heat and contract with cold appear the condition that the card is dead unable to dismantle, based on this, for further improve the stability of structure, avoid honeycomb duct 6 the condition of unsettled installation to appear, at honeycomb duct 6's the outside along the even a plurality of brace rods 603 that are provided with of circumference, brace rod 603 is extended to the other end by honeycomb duct 6's one end, brace rod 603 and the setting of 5 contacts of installation sleeve, setting through brace rod 603, the unsettled setting of honeycomb duct 6 has not only been avoided, and make it realize being connected with installation sleeve 5 through less contact surface, great reduction the frictional force of dismouting in-process between the two, the operation degree of difficulty has been reduced.

The draft tube 6, the draft ribs 601 and the connecting disc 602 are of an integrated structure.

The end of the installation sleeve 5 is provided with a first connecting flange 501, the first connecting flange 501 is welded and fixed on the installation sleeve 5, the end of the pulverized coal injection pipe 4 is provided with a second connecting flange 401, the second connecting flange 401 is welded and fixed on the pulverized coal injection pipe 4, the first connecting flange 501, the second connecting flange 401 and the connection disc 602 are connected through a bolt assembly 7, and installation holes are formed in the first connecting flange 501, the second connecting flange 401 and the connection disc 602 in a matching mode with the bolt assembly 7.

High-temperature-resistant sealing gaskets are arranged between the first connecting flange 501 and the connecting disc 602 and between the second connecting flange 401 and the connecting disc 602, the high-temperature-resistant sealing gaskets can be silicone rubber gaskets, the high-temperature-resistant sealing gaskets have excellent high-temperature-resistant performance and sealing performance, and reliable sealing connection effects among the installation sleeve 5, the flow guide pipe 6 and the pulverized coal ejection pipe 4 can be achieved in an auxiliary mode.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (8)

1. The utility model provides an assembled blast furnace coal injection rifle, includes and carries out the gas admission pipe, buggy admission pipe and the buggy blowout pipe that communicate through tee junction spare, the buggy admission pipe sets up its characterized in that with the buggy blowout pipe is coaxial: the last cooperation buggy blowout pipe of three way connection spare is provided with the installation sleeve pipe, and the interpolation of installation sleeve pipe has connect the honeycomb duct, and the inner wall top interval of honeycomb duct is provided with a plurality of water conservancy diversion muscle, and the water conservancy diversion muscle extends the setting along the axial of honeycomb duct, and the honeycomb duct is provided with the connection pad in the one end of keeping away from three way connection spare, the connection pad centre gripping set up in between buggy blowout pipe and the installation sleeve pipe and the three realizes detachable through bolt assembly and is connected.

2. The assembled blast furnace coal injection lance of claim 1 wherein: the inner walls of the three-way connecting piece, the pulverized coal jetting pipe and the flow guide pipe are arranged in parallel and level.

3. The assembled blast furnace coal injection lance of claim 1 wherein: the mounting sleeve is welded and fixed with the three-way connecting piece, and the three-way connecting piece is provided with a mounting groove in a matching manner with the mounting sleeve.

4. The assembled blast furnace coal injection lance of claim 1 wherein: a gap is arranged between the mounting sleeve and the flow guide pipe.

5. The assembled blast furnace coal injection lance of claim 4 wherein: the outer side of the flow guide pipe is uniformly provided with a plurality of supporting ribs along the circumferential direction, the supporting ribs extend from one end of the flow guide pipe to the other end of the flow guide pipe, and the supporting ribs are in contact with the installation sleeve.

6. The assembled blast furnace coal injection lance of claim 1 wherein: the guide pipe, the guide ribs and the connecting disc are of an integrated structure.

7. The fabricated blast furnace coal injection lance of claim 1 wherein: the end part of the mounting sleeve is provided with a first connecting flange, the end part of the pulverized coal ejection pipe is provided with a second connecting flange, and the first connecting flange, the second connecting flange and the connecting disc are connected through the bolt assembly.

8. The fabricated blast furnace coal injection lance of claim 7 wherein: and high-temperature-resistant sealing gaskets are arranged between the first connecting flange and the connecting disc and between the second connecting flange and the connecting disc.

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