CN218579996U

CN218579996U - Novel tuyere small sleeve

Info

Publication number: CN218579996U
Application number: CN202222650969.6U
Authority: CN
Inventors: 房伟; 马永福; 赵建宇; 熊保林; 李军; 羿光杰; 李建伟
Original assignee: Hebei Jinxi Iron And Steel Group Co ltd
Current assignee: Hebei Jinxi Iron And Steel Group Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-07
Anticipated expiration: 2032-10-09

Abstract

The utility model provides a novel tuyere small sleeve, which comprises an inner lining plate, an outer lining plate, a rear end cover and a wear-resistant layer; the inner lining plate is an annular plate; the outer lining plate is an annular structural part, is sleeved on the outer side of the inner lining plate and is arranged at a distance from the inner lining plate, and the front end of the outer lining plate is bent inwards to form a bent part; the bent back part is welded and connected with the front end of the inner lining plate to form a first welding line, and the distance between the first welding line and the front end face of the outer lining plate is 150mm; the end face of one end of the rear end cover is provided with a water inlet and a water outlet, and the other end of the rear end cover is respectively welded with the rear ends of the inner lining plate and the outer lining plate; the wear-resistant layer is coated on the surface of the return bending part of the outer lining plate; wherein, the space enclosed by the inner lining plate, the outer lining plate and the rear end cover is an annular cavity. The utility model provides a novel tuyere small sleeve moves the first welding seam of tuyere small sleeve front end 30mm department to 150mm department to at the spraying wearing layer between first welding seam to front end terminal surface, further improve the abrasive resistance, effectively reduce the emergence that the crater warp, the fracture condition of leaking.

Description

Novel tuyere small sleeve

Technical Field

The utility model belongs to the technical field of blast furnace equipment, concretely relates to novel tuyere small sleeve.

Background

In the working process of the blast furnace, the tuyere small sleeve is easy to crack at a welding seam which is 30mm away from the front end of the tuyere small sleeve, so that the tuyere small sleeve leaks water.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a novel tuyere small sleeve aims at solving at the blast furnace working process, and tuyere small sleeve is easy in the fracture of wind gap anterior segment crater department, leads to the technical problem that tuyere small sleeve leaked.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a novel tuyere small sleeve, comprising:

the inner lining plate is an annular plate;

the outer lining plate is an annular structural part, is sleeved on the outer side of the inner lining plate and is arranged at a distance from the inner lining plate, and the front end of the outer lining plate is bent back inwards to form a bent back part; the bent back part is welded and connected with the front end of the inner lining plate to form a first welding line, and the distance between the first welding line and the front end face of the outer lining plate is 150mm;

a water inlet and a water outlet are arranged on the end face of one end of the rear end cover, and the other end of the rear end cover is respectively welded with the rear end of the inner lining plate and the rear end of the outer lining plate;

the wear-resistant layer is coated on the surface of the return bending part of the outer lining plate;

the space enclosed by the inner lining plate, the outer lining plate and the rear end cover is an annular cavity, and a water inlet and a water outlet in the rear end cover are communicated with the annular cavity.

In a possible implementation mode, the annular cavity is divided into a rear water cavity, a water passing channel, a middle water cavity, a front water cavity and a plurality of cooling chambers by a partition plate, the rear water cavity is arranged at the rear side of the annular cavity, the middle water cavity is arranged in the middle of the annular cavity and is arranged at the interval of the outer lining plates, the front water cavity is arranged at the front side of the annular cavity, the cooling chambers are arranged along the axial direction of the annular cavity between the middle water cavity and the outer lining plates, one end of the water passing channel is connected with the water inlet, the other end of the water passing channel penetrates through the rear water cavity and is connected and communicated with the middle water cavity, the middle water cavity is connected and communicated with the front water cavity, the cooling chambers and the rear water cavity are sequentially communicated, and the water outlet is connected and communicated with the rear water cavity.

In one possible implementation, the number of cooling chambers is 4.

In one possible implementation, the inner lining plate, the outer lining plate and the rear end cover are all copper pieces.

In one possible implementation, the wear layer is a ceramic wear layer.

In a possible implementation manner, the outer liner plate further comprises an annular step, and the annular step is arranged on the return bending part of the outer liner plate and is close to the first welding line.

In a possible implementation manner, the wind gap sleeve further comprises a temporary plugging component, the inner lining plate is in a conical shape, the front end of the inner lining plate is a small end, the rear end of the inner lining plate is a large end, and the temporary plugging component is abutted against the inner side of the inner lining plate to plug the wind gap sleeve.

In a possible implementation manner, the temporary plugging component comprises a plugging piece and a connecting component, the plugging piece is abutted against the inner side of the inner lining plate, and the connecting component is connected with the plugging piece and connected with the front end face of the outer lining plate.

In a possible implementation manner, the plugging piece is of a conical annular structure, the small end of the plugging piece is provided with a sealing end plate, and the outer side of the plugging piece is provided with a sealing layer.

In a possible implementation manner, the connecting assembly comprises a rotating handle, a supporting plate and two hook plates, the two hook plates are in an L-shaped structure and are symmetrically arranged at intervals outside the bottom of the plugging piece, one end of each of the two hook plates is connected with the sealing end plate of the plugging piece, and the other end of each of the two hook plates is suitable for being hooked on the front end face of the outer lining plate; the fagging is oval structure, and presss from both sides and establish two between the hook plate, the turning handle passes sealed end plate with the fagging is connected, just the turning handle with sealed end plate rotates sealing connection.

The utility model provides a novel tuyere small sleeve's beneficial effect is: compared with the prior art, the novel tuyere small sleeve provided by the utility model is formed by welding an inner lining plate, an outer lining plate and a rear end cover to form an annular cavity for cooling water to flow; move the first welding seam of tuyere small sleeve front end 30mm department to 150mm department, alleviate the washing away of buggy to the welding seam to the spraying wearing layer between first welding seam to front end terminal surface further improves wear resistance, effectively reduces the emergence of weld crater deformation, the fracture condition of leaking.

Drawings

Fig. 1 is a schematic cross-sectional view of a novel tuyere small sleeve provided by an embodiment of the present invention after a plugging assembly is removed;

fig. 2 is a schematic cross-sectional structural view of a novel tuyere small sleeve provided by an embodiment of the present invention;

fig. 3 is a schematic side view of the novel tuyere small sleeve provided by the embodiment of the present invention after the plugging component is removed;

fig. 4 is a schematic cross-sectional structural view of a plugging assembly in the novel tuyere small sleeve provided by the embodiment of the present invention;

fig. 5 is a schematic side view of a plugging assembly in the novel tuyere small sleeve according to an embodiment of the present invention;

description of reference numerals:

11. an inner lining plate; 12. an outer liner; 13. a first weld; 14. a rear end cap;

15. a wear resistant layer; 16. an annular step; 17. a water inlet; 18. a water outlet;

21. a back water cavity; 22. a water passage; 23. a reclaimed water cavity; 24. a front water cavity;

25. a cooling chamber; 31. a blocking member; 32. a handle is rotated; 33. a supporting plate;

34. and a hook plate.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Referring to fig. 1 to 5, the novel tuyere small sleeve provided by the present invention will now be described. The novel tuyere small sleeve comprises an inner lining plate 11, an outer lining plate 12, a rear end cover 14 and a wear-resistant layer 15; the inner lining plate 11 is an annular plate; the outer lining plate 12 is an annular structural member, is sleeved outside the inner lining plate 11 and is arranged at a distance from the inner lining plate 11, and the front end of the outer lining plate 12 is bent inwards to form a bent part; the bent back part is welded and connected with the front end of the inner lining plate 11 to form a first welding line 13, and the distance between the first welding line 13 and the front end surface of the outer lining plate 12 is 150mm; a water inlet 17 and a water outlet 18 are arranged on the end face of one end of the rear end cover 14, and the other end of the rear end cover is respectively connected with the rear end of the inner lining plate 11 and the rear end of the outer lining plate 12 in a welding manner; the wear-resistant layer 15 is coated on the surface of the return bend part of the outer liner plate 12; the space enclosed by the inner lining plate 11, the outer lining plate 12 and the rear end cover 14 is an annular cavity, and a water inlet 17 and a water outlet 18 on the rear end cover 14 are both communicated with the annular cavity.

The embodiment of the utility model provides a novel tuyere small sleeve's beneficial effect is: compared with the prior art, the novel tuyere small sleeve provided by the embodiment of the utility model is formed by welding an inner lining plate 11, an outer lining plate 12 and a rear end cover 14 to form an annular cavity for cooling water to flow; the first welding line 13 at the position of 30mm at the front end of the tuyere small sleeve is moved to the position of 150mm, the erosion of the coal dust to the welding line is reduced, the wear-resistant layer 15 is sprayed between the first welding line 13 and the front end face, the wear-resistant capability is further improved, and the deformation, cracking and water leakage of the welding line are effectively reduced.

As shown in fig. 1 and fig. 3, the utility model provides an in a specific implementation mode of the novel tuyere small sleeve, the annular chamber is divided into back water cavity 21 by the baffle, water passing channel 22, well water cavity 23, preceding water cavity 24 and a plurality of cooling chamber 25, back water cavity 21 establishes the rear side at the annular chamber, well water cavity 23 establishes the middle part at the annular chamber and sets up with outer liner plate 12 interval, preceding water cavity 24 establishes the front side at the annular chamber, a plurality of cooling chamber 25 is laid between well water cavity 23 and outer liner plate 12 along the annular chamber axial, water passing channel 22 one end is connected with water inlet 17, the other end passes back water cavity 21 and is connected and communicate with well water cavity 23, well water cavity 23 is connected and communicates with preceding water cavity 24, communicate between a plurality of cooling chamber 25 and the back water cavity 21 in proper order, delivery port 18 is connected and communicates with back water cavity 21.

When the cooling device works, cooling water enters from the water inlet 17, enters the middle water cavity 23 through the water channel 22, enters the front water cavity 24, flows back from the front water cavity 24, sequentially and spirally flows through the plurality of cooling chambers 25, flows into the rear water cavity 21 and flows out from the water outlet 18 to cool the tuyere small sleeve.

As shown in fig. 1 and 3, in a specific implementation of the novel tuyere small sleeve provided by the embodiment of the present invention, the number of the cooling chambers 25 is 4.

As shown in fig. 1 and 3, in a specific implementation of the novel tuyere small sleeve provided by the embodiment of the invention, the inner lining plate 11, the outer lining plate 12 and the rear end cover 14 are all made of copper.

It should be noted that copper has better thermal conductivity to facilitate heat dissipation

As shown in fig. 1, in a specific implementation manner of the novel tuyere small sleeve provided by the embodiment of the present invention, the wear-resistant layer 15 is a ceramic wear-resistant layer 15 to increase the wear resistance of the front end of the tuyere small sleeve.

As shown in FIG. 1 and FIG. 2, the embodiment of the present invention provides a novel tuyere small sleeve, which further comprises an annular step 16, wherein the annular step 16 is disposed on the bending portion of the outer lining plate 12, and is close to the first welding seam 13, so as to shield the first welding seam 13 and avoid the direct erosion of the coal powder to the welding seam.

As shown in fig. 2 and fig. 4, the embodiment of the present invention provides a novel tuyere small sleeve, which further includes a temporary plugging assembly, the inner lining plate 11 is tapered, the front end of the inner lining plate 11 is a small end, the rear end is a large end, and the temporary plugging assembly abuts against the inner side of the inner lining plate 11 to plug the tuyere small sleeve.

As shown in fig. 4 and 5, in a specific implementation manner of the novel tuyere small sleeve provided by the embodiment of the present invention, the temporary plugging component includes a plugging piece 31 and a connecting component, the plugging piece 31 abuts against the inner side of the inner lining plate 11, and the connecting component is connected with the plugging piece 31 and connected with the front end face of the outer lining plate 12.

As shown in fig. 4 and 5, in a specific implementation manner of the novel tuyere small sleeve provided by the embodiment of the present invention, the blocking piece 31 is a tapered annular structure, the small end is provided with a sealing end plate, and the sealing layer is arranged outside the blocking piece 31.

As shown in fig. 4 and 5, in a specific implementation manner of the novel tuyere small sleeve provided by the embodiment of the present invention, the connecting assembly includes a rotating handle 32, a supporting plate 33 and two hook plates 34, the two hook plates 34 are L-shaped structures and symmetrically spaced at the outer side of the bottom of the plugging member 31, one end of each of the two hook plates 34 is connected to the sealing end plate of the plugging member 31, and the other end is adapted to be hooked on the front end surface of the outer liner 12; the supporting plate 33 is in an oval structure and is clamped between the two hook plates 34, the rotating handle 32 penetrates through the sealing end plate to be connected with the supporting plate 33, and the rotating handle 32 is connected with the sealing end plate in a rotating and sealing mode.

It should be noted that the blast furnace tuyere small sleeve is an important process part for air supply and coal injection of the iron-making blast furnace, all the tuyere small sleeves are open in the normal production of the blast furnace, but when the condition of the blast furnace is seriously abnormal, in order to ensure certain blast kinetic energy of the blast furnace, part of the tuyere small sleeves need to be temporarily blocked; when part of the small air inlet sleeve is damaged and seriously leaks water, the small air inlet sleeve in the area is also required to be temporarily blocked in order to prevent a large amount of condensed slag iron from being formed in front of the small water-leaking air inlet sleeve to burn the small air inlet sleeve again. The traditional mode of blocking the blast furnace air inlet small sleeve is mainly to block the air inlet by using scattered amorphous refractory materials such as water stemming and the like in a manual mode, but due to the defects of the blocking materials and the difference of the technical level of an operator, the blocked air inlet small sleeve is often blown open automatically, or the blocked air inlet small sleeve is not poked when the air inlet small sleeve needs to be poked open, and the blocking materials are not arranged at the front end position of the air inlet small sleeve, so that the air inlet small sleeve is burnt out or the blast pipe is burnt through, and the serious influence is caused on the blast furnace condition and the production.

When the blast furnace stops blowing, the plugging piece 31 extends into the tuyere small sleeve and is clamped tightly, the tuyere is sealed, the rotating handle 32 is rotated, the hook plates 34 are supported on two sides corresponding to the long axis of the oval supporting plate 33, the two hook plates 34 are spread, the hook plates 34 hook the front end of the tuyere small sleeve, and the plugging piece 31 is prevented from being blown open; when the blast furnace needs to work again, the rotating handle 32 is rotated again, the hook plates 34 are supported by two sides corresponding to the short axis of the oval supporting plate 33, the two hook plates 34 retract, the hook plates 34 are separated from the front end of the tuyere small sleeve, and then the plugging piece 31 can be pulled out.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A novel tuyere small sleeve is characterized by comprising:

the inner lining plate (11) is an annular plate;

the outer lining plate (12) is an annular structural member, is sleeved on the outer side of the inner lining plate (11) and is arranged at a distance from the inner lining plate (11), and the front end of the outer lining plate (12) is bent inwards to form a bent part; the bent back part is welded and connected with the front end of the inner lining plate (11) to form a first welding seam (13), and the distance between the first welding seam (13) and the front end face of the outer lining plate (12) is 150mm;

a water inlet (17) and a water outlet (18) are arranged on the end face of one end of the rear end cover (14), and the other end of the rear end cover is respectively welded with the rear end of the inner lining plate (11) and the rear end of the outer lining plate (12); and

the wear-resistant layer (15), the wear-resistant layer (15) is coated on the surface of the return bend part of the outer liner plate (12);

the space enclosed by the inner lining plate (11), the outer lining plate (12) and the rear end cover (14) is an annular cavity, and a water inlet (17) and a water outlet (18) on the rear end cover (14) are communicated with the annular cavity.

2. The novel tuyere small sleeve as claimed in claim 1, wherein the annular cavity is divided into a rear water cavity (21), a water passing channel (22), a middle water cavity (23), a front water cavity (24) and a plurality of cooling chambers (25) by a partition plate, the rear water cavity (21) is arranged at the rear side of the annular cavity, the middle water cavity (23) is arranged at the middle of the annular cavity and is arranged at intervals with the outer lining plate (12), the front water cavity (24) is arranged at the front side of the annular cavity, the plurality of cooling chambers (25) are axially arranged between the middle water cavity (23) and the outer lining plate (12) along the annular cavity, one end of the water passing channel (22) is connected with the water inlet (17), the other end of the water passing through the rear water cavity (21) is connected and communicated with the middle water cavity (23), the middle water cavity (23) is connected and communicated with the front water cavity (24), the plurality of cooling chambers (25) and the rear water cavity (21) are communicated with the rear water outlet in sequence.

3. A new tuyere stock according to claim 2, characterized in that there are 4 of said cooling chambers (25).

4. The new tuyere stock according to claim 1, characterized in that the inner lining plate (11), the outer lining plate (12) and the rear end cap (14) are all copper pieces.

5. A new tuyere stock according to claim 1, characterized in that the wear resistant layer (15) is a ceramic wear resistant layer (15).

6. A new tuyere stock according to claim 1, characterized in that it further comprises an annular step (16), said annular step (16) being provided on the return bend of the outer liner (12) and being provided close to the first welding seam (13).

7. The novel tuyere small sleeve is characterized by further comprising a temporary plugging component, wherein the inner lining plate (11) is in a conical shape, the front end of the inner lining plate (11) is a small end, the rear end of the inner lining plate (11) is a large end, and the temporary plugging component is abutted with the inner side of the inner lining plate (11) to plug the tuyere small sleeve.

8. A new tuyere small sleeve according to claim 7, characterized in that the temporary blocking assembly comprises a blocking piece (31) abutting against the inner side of the inner lining plate (11) and a connecting assembly connecting with the blocking piece (31) and with the front end face of the outer lining plate (12).

9. A novel tuyere small sleeve as claimed in claim 8, characterized in that said plugging member (31) is a tapered ring structure, the small end is provided with a sealing end plate, and the outside of said plugging member (31) is provided with a sealing layer.

10. The new tuyere small sleeve as claimed in claim 9, wherein the connecting assembly comprises a rotating handle (32), a supporting plate (33) and two hook plates (34), two of the hook plates (34) are L-shaped and symmetrically spaced outside the bottom of the plugging member (31), one end of each of the two hook plates (34) is connected with the sealing end plate of the plugging member (31), and the other end is adapted to be hooked on the front end face of the outer liner plate (12); the fagging (33) are oval structure, and press from both sides and establish two between hook plate (34), turning handle (32) pass sealed end plate with fagging (33) are connected, just turning handle (32) with sealed end plate rotates sealing connection.