CN216998472U

CN216998472U - Novel tuyere

Info

Publication number: CN216998472U
Application number: CN202220731710.1U
Authority: CN
Inventors: 李立鸿; 吴捷; 沈大伟; 陈名炯; 周兵其
Original assignee: Raoping Yuexing Copper Processing Co ltd; SHANTOU HUAXING METALLURGICAL EQUIPMENT CO Ltd
Current assignee: Raoping Yuexing Copper Processing Co ltd; SHANTOU HUAXING METALLURGICAL EQUIPMENT CO Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-19
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a novel tuyere, which comprises a tuyere body and is characterized in that: the tuyere body is formed by sequentially nesting at least two water jackets from inside to outside; the water jacket is positioned on the innermost layer, and the welding seam for sealing is positioned on the outer side wall or the rear end part of the water jacket; the welding seam for sealing is positioned on the inner side wall or the rear end part of the water jacket; in two adjacent water jackets, the outer side wall of the water jacket positioned at the inner layer is in contact fit with the inner side wall of the water jacket positioned at the outer layer; the water jacket in the innermost layer is provided with a hot air channel which runs forwards and backwards. According to the utility model, the welding seams for sealing on each water jacket can be arranged on the part with better working condition of the air port, so that the welding seams for sealing among all components in the water jacket are not exposed on the part with the worst working condition of the air port, the cracking and water leakage of the welding seams for sealing among the components can be effectively avoided, and the service life of the air port is prolonged.

Description

Novel tuyere

Technical Field

The utility model relates to a blast furnace cooling device, in particular to a novel tuyere.

Background

The blast furnace tuyere is the most important cooling equipment in the blast furnace smelting process. The blast furnace tuyere has the functions of feeding hot air into the blast furnace, the front end temperature of the blast furnace tuyere is about 2000 ℃, the temperature of the slag iron melt is about 1400 ℃, and the temperature of the hot air passing through the tuyere small sleeve is over 1000 ℃. When the blast furnace tuyere works, the tuyere bears the scouring of high temperature, high pressure, coal gas flow and furnace burden, and the influence of iron slag erosion and coal dust scouring, so that the tuyere is easy to lose efficacy and damage. If the blast furnace tuyere is damaged and leaks water, the service life of refractory materials and the service life of a hearth in the blast furnace are influenced, the production operation indexes of the blast furnace are directly influenced, and the hearth can be even frozen seriously.

At present, the mode that the tuyere is invalid has tuyere melting loss, end surface abrasion, coal gun abrasion and the like. The tuyere melting loss refers to that the surface of the tuyere is eroded instantly to form a pit after the tuyere is contacted with slag iron of a blast furnace hearth or molten slag iron dropped from furnace burden, and if the tuyere meets the tuyere with poor cooling strength, the erosion speed of the surface of the tuyere is accelerated until the tuyere leaks water. The end surface abrasion means that the tuyere is severely washed by furnace burden for a long time, so that the thickness of the cooling cavity wall at the front end of the tuyere is reduced until the tuyere is worn through and leaks water, the failure is caused, and when the cooling strength of the tuyere is insufficient, the end surface abrasion speed can be accelerated.

The existing tuyere generally adopts a casting tuyere with stronger manufacturing flexibility, and the mode of casting the tuyere is divided into integral casting and split casting. The inner cavity structure of the tuyere is complex, so that the tuyere cast integrally has the problems of difficult demoulding and the like. The split casting is to cast each component and then weld each component, however, the welding seam for sealing the part between the components is exposed on the hot side of the tuyere (i.e. the part with the worst working condition), and once the tuyere is not cooled in place, stress is easily generated, so that the welding seam is cracked and leaks water, and the tuyere product fails.

Disclosure of Invention

The utility model aims to provide a novel air port which can effectively avoid water leakage caused by cracking of a welding seam for sealing between components and prolong the service life of the air port. The technical scheme is as follows:

the utility model provides a novel wind gap, includes the wind gap body, its characterized in that: the tuyere body is formed by sequentially nesting at least two water jackets from inside to outside; the water jacket is positioned on the innermost layer, and the welding seam for sealing is positioned on the outer side wall or the rear end part of the water jacket; the welding seam for sealing is positioned on the inner side wall or the rear end part of the water jacket; in two adjacent water jackets, the outer side wall of the water jacket positioned at the inner layer is in contact fit with the inner side wall of the water jacket positioned at the outer layer; the water jacket at the innermost layer is provided with a hot air channel which runs forwards and backwards.

The welding seam used for sealing in the water jacket refers to the welding seam between the components which enclose the inner cavity of the water jacket. When the water jacket works, cooling water flows into the inner cavity of the water jacket, and if the welding seams for sealing are damaged, the cooling water in the inner cavity of the water jacket can be leaked.

The front part of each water jacket, the inner side wall of the innermost water jacket (the inner side wall of the innermost water jacket encloses the hot air channel) and the outer side wall of the outermost water jacket belong to the parts with the worst or worse working conditions.

In the novel tuyere, one side close to the hot air channel is inner, and the other side far away from the hot air channel is outer.

The tuyere body is formed by nesting the inside and the outside of at least two water jackets, the rear end (usually a flange) of each water jacket and a joint surface between each water jacket and the corresponding water jacket belong to parts with better working conditions, and welding seams for sealing on each water jacket are arranged on the parts with the better working conditions, so that the welding seams for sealing among the components in the water jackets are not exposed on the parts with the worst working conditions of the tuyere, the welding seams for sealing among the components can be effectively prevented from cracking and leaking water, and the service life of the tuyere is prolonged.

In a preferred embodiment, the front end and the rear end of the water jacket at the inner side of two adjacent water jackets are fixedly connected (e.g. welded or mechanically connected through a connecting piece) with the front end and the rear end of the water jacket at the outer side, respectively.

In the preferred scheme, the tuyere body is formed by nesting two water jackets, and one water jacket is positioned at the outer side of the other water jacket; the welding seam for sealing is positioned on the outer side wall of the water jacket or the rear end part of the water jacket; the welding seam for sealing is positioned on the inner side wall of the water jacket or the rear end part of the water jacket; the outer side wall of the water jacket positioned in the inner layer is in contact fit with the inner side wall of the water jacket positioned in the outer layer; the water jacket in the inner layer is provided with the hot air channel.

In a first specific scheme, the water jacket comprises an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve and the inner sleeve enclose an inner cavity, the fluid director is arranged in the inner cavity, the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line, and the rear end of the inner sleeve is connected with the rear end of the outer sleeve through a second annular welding line; the rear end of the outer sleeve or the rear end of the inner sleeve is provided with a water inlet and a water outlet; in the outermost water jacket, a first annular welding line is positioned on the inner side wall of the water jacket, and a second annular welding line is positioned on the rear end face of the water jacket. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve and the inner sleeve to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet. The rear ends of the water jackets can jointly form a flange of the tuyere.

In a second specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the outermost water jacket, the rear end of the outer sleeve is integrally connected with the front end of the flange, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, and the first annular welding line and the third annular welding line are both positioned on the inner side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

In a third specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the outermost water jacket, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is integrally connected with the front end of the flange, the first annular welding line is positioned on the inner side wall of the water jacket, and the fourth annular welding line is positioned on the rear end part of the outer side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

In a fourth specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved on the outer side of the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the outermost water jacket, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, the first annular welding line and the third annular welding line are both positioned on the inner side wall of the water jacket, and the fourth annular welding line is positioned on the rear end part of the outer side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

In a fifth specific scheme, the water jacket comprises an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve and the inner sleeve enclose an inner cavity, the fluid director is arranged in the inner cavity, the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line, and the rear end of the inner sleeve is connected with the rear end of the outer sleeve through a second annular welding line; the rear end of the outer sleeve or the rear end of the inner sleeve is provided with a water inlet and a water outlet; in the water jacket of the innermost layer, a first annular welding line is positioned on the outer side wall of the water jacket, and a second annular welding line is positioned on the rear end face of the water jacket. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve and the inner sleeve to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet. The rear ends of the water jackets can jointly form a flange of the tuyere.

In a sixth specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the water jacket of the innermost layer, the rear end of the outer sleeve is integrally connected with the front end of the flange, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, the first annular welding line is positioned on the outer side wall of the water jacket, and the third annular welding line is positioned on the rear end part of the inner side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

In a seventh specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the water jacket of the innermost layer, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is integrally connected with the front end of the flange, and the first annular welding line and the fourth annular welding line are positioned on the outer side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

In an eighth specific scheme, the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding seam; in the water jacket of the innermost layer, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, the first annular welding line and the fourth annular welding line are both positioned on the outer side wall of the water jacket, and the third annular welding line is positioned on the rear end part of the inner side wall of the water jacket; the flange is provided with a water inlet and a water outlet. Generally, the flow guider divides an inner cavity enclosed by the outer sleeve, the inner sleeve and the flange to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

The water jackets of the eight specific schemes can be freely combined in pairs according to actual production requirements, and at least two water jackets are sequentially nested from inside to outside to form the required tuyere body.

In a more preferable scheme, the fluid director comprises a water inlet pipe, a water outlet pipe and a plurality of flow deflectors, each flow deflector divides the internal cavity into a plurality of water chambers which are communicated in sequence, the water inlet is communicated with the first water chamber through the water inlet pipe, and the water outlet is communicated with the last water chamber through the water outlet pipe. Generally, the cross-sectional shapes of the water inlet pipe and the water outlet pipe can be circular, rectangular, oval or triangular. The inner cavity of the water jacket is divided into independent and communicated water chambers by the fluid director, cooling water is directly conveyed to the water chamber with the worst working condition at the front end of the water jacket through the water inlet and the water inlet pipe for cooling, then the cooling water continuously flows back through the water chambers along the rotational flow direction of the fluid director, and finally flows out of the water outlet through the water outlet pipe, so that a cooling process is completed.

The cooling channels of the water jackets can be connected in series or in parallel, and can also be supplied with water independently.

In a more preferable scheme, the outer sleeve and the inner sleeve are both made of copper or copper alloy. The copper alloy is generally a copper-chromium alloy, a copper-zirconium alloy or a copper-silver alloy. The water jacket made of the copper or copper alloy material can improve the heat conduction capability of the tuyere body; the copper alloy can also improve the mechanical strength and hardness of the tuyere body and improve the wear resistance of a hot surface. At present, the front part of each water jacket in the tuyere body, the inner side wall of the innermost water jacket and the outer side wall of the outermost water jacket belong to parts with severe working conditions, and the rear end of each water jacket in the tuyere body and the joint surface of the water jacket and the water jacket belong to parts with better working conditions. Under the condition of ensuring the service performance of the tuyere body, in order to save the using amount of copper materials at the part with better working condition and further save the cost, in a specific scheme, the materials of the outer sleeve of the innermost water jacket, the inner sleeve of the outermost water jacket, the inner sleeve of the middle water jacket and the outer sleeve of the middle water jacket can also adopt stainless steel, carbon steel, aluminum or aluminum alloy.

In order to prevent the front end of the tuyere body from being worn or melted, in a preferable scheme, the front end of the tuyere body is provided with a wear-resistant layer. Above-mentioned wearing layer can protect the front end of wind gap body, slows down the wearing and tearing progress of wind gap body front end, and the cooling water in the cooling channel of wind gap body front end is also at the cooling wearing layer simultaneously, lets the wearing layer can carry out work under the lower temperature, improves the life of wearing layer, and then improves the life in this kind of novel wind gap.

In a first specific scheme, the wear-resistant layer is coated on the front end of the water jacket at the outer layer.

In a second specific scheme, the wear-resistant layer is coated on the front end of the water jacket in the inner layer.

In a third specific scheme, the wear-resistant layer is coated on the front end of each water jacket.

In a more preferable scheme, the material of the wear-resistant layer is metal alloy or ceramic. Generally, the metal alloy may be a nickel-based alloy, an iron-based alloy, or a cobalt-based alloy.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, the welding seams for sealing on each water jacket can be arranged on the part with better working condition of the air port, so that the welding seams for sealing among all components in the water jacket are not exposed on the part with the worst working condition of the air port, the cracking and water leakage of the welding seams for sealing among the components can be effectively avoided, and the service life of the air port is prolonged.

Drawings

FIG. 1 is a schematic configuration diagram of the preferred embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the preferred embodiment 2 of the present invention;

FIG. 3 is a schematic structural view of the preferred embodiment 3 of the present invention;

FIG. 4 is a schematic configuration diagram of the preferred embodiment 4 of the present invention;

FIG. 5 is a schematic construction diagram of the preferred embodiment 5 of the present invention;

FIG. 6 is a schematic structural view of the preferred embodiment 6 of the present invention;

fig. 7 is a schematic structural view of the preferred embodiment 7 of the present invention.

Detailed Description

The following further describes the preferred embodiments of the present invention with reference to the drawings.

Example 1

As shown in fig. 1, the novel tuyere in the embodiment includes a tuyere body 1, the tuyere body 1 is formed by nesting two water jackets 2, and one water jacket 2 is located at the outer side of the other water jacket 2; the welding seam for sealing is positioned on the outer side wall of the water jacket 2 or the rear end part of the water jacket 2; the welding seam for sealing is positioned on the inner side wall of the water jacket 2 or the rear end part of the water jacket 2; the outer side wall of the water jacket 2 at the inner layer is in contact fit with the inner side wall of the water jacket 2 at the outer layer; the water jacket 2 at the inner layer has a hot air passage 3 running forward and backward.

The weld for sealing in the water jacket 2 is a weld between members that enclose a cavity inside the water jacket 2. When the internal cavity of the water jacket 2 is filled with cooling water during operation, if these welds for sealing are broken, the cooling water in the internal cavity of the water jacket 2 leaks.

The front part of each water jacket 2, the inner side wall of the innermost water jacket 2 (the inner side wall of the innermost water jacket 2 encloses the hot air channel 3), and the outer side wall of the outermost water jacket 2 belong to the parts with the worst or worse working conditions.

In the novel tuyere of the utility model, one side close to the hot air channel 3 is inner, and one side far away from the hot air channel 3 is outer.

The front end and the rear end of the water jacket 2 at the inner side are fixedly connected (e.g. welded or mechanically connected through a connecting piece) with the front end and the rear end of the water jacket 2 at the outer side, respectively.

The water jacket 2 comprises an outer sleeve 21, an inner sleeve 22 and a fluid director 23, wherein the outer sleeve 21 is sleeved outside the inner sleeve 22, the outer sleeve 21 and the inner sleeve 22 enclose an inner cavity 24, the fluid director 23 is arranged in the inner cavity 24, the front end of the inner sleeve 22 is connected with the front end of the outer sleeve 21 through a first annular welding seam 26, and the rear end of the inner sleeve 22 is connected with the rear end of the outer sleeve 21 through a second annular welding seam 27; the rear end of the outer sleeve 21 or the rear end of the inner sleeve 22 is provided with a water inlet and a water outlet; in the outermost water jacket 2, a first annular welding line 26 is positioned on the inner side wall of the water jacket 2, and a second annular welding line 27 is positioned on the rear end face of the water jacket 2; in the innermost water jacket 2, a first annular weld 26a is on the outer side wall of the water jacket 2, and a second annular weld 27a is on the rear end face of the water jacket 2. Generally, the flow guide 23 (flow guide 23 a) divides an inner cavity 24 (inner cavity 24 a) enclosed by the outer sleeve 21 and the inner sleeve 22 to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet. The rear ends of the water jackets 2 may collectively constitute a flange 25 (flange 25 a) of the tuyere.

The fluid director 23 (fluid director 23 a) includes an inlet tube (not shown), an outlet tube (not shown) and a plurality of flow deflectors 231 (flow deflectors 231 a), each flow deflector 231 (flow deflectors 231 a) divides the internal cavity 24 (internal cavity 24 a) into a plurality of sequentially communicated water chambers 232 (water chambers 232 a), the water inlet is communicated with the first water chamber 232 (water chamber 232 a) through the inlet tube, and the water outlet is communicated with the last water chamber 232 (water chamber 232 a) through the outlet tube. Generally, the cross-sectional shapes of the water inlet pipe and the water outlet pipe can be circular, rectangular, oval or triangular. The internal cavity 24 (internal cavity 24 a) of the water jacket 2 is divided into independent and communicated water chambers 232 (water chambers 232 a) by the fluid director 23 (fluid director 23 a), cooling water is directly conveyed to the water chamber with the worst working condition at the front end of the water jacket 2 through the water inlet and the water inlet pipe to be cooled, then the cooling water continuously flows back through the water chambers 232 (water chambers 232 a) in sequence along the rotational flow direction of the fluid director 23 (fluid director 23 a), and finally flows out from the water outlet through the water outlet pipe, so that a cooling process is completed.

The cooling passages of the water jackets 2 may be connected in series or in parallel, or may be supplied with water independently of each other.

The outer sleeve 21 and the inner sleeve 22 are made of copper alloy. The copper alloy is generally a copper-chromium alloy, a copper-zirconium alloy or a copper-silver alloy. The water jacket 2 made of the copper alloy material can improve the heat conduction capability of the tuyere body 1; the copper alloy can also improve the mechanical strength and hardness of the tuyere body 1 and improve the wear resistance of the hot surface.

The tuyere body 1 is formed by internally and externally nesting two water jackets 2, the rear end (usually a flange 25) of each water jacket 2 and a joint surface between the water jackets 2 and the water jackets 2 belong to parts with better working conditions, and welding seams for sealing on each water jacket 2 are arranged on the parts with better working conditions, so that the welding seams for sealing among components in the water jackets 2 are not exposed on the parts with the worst working conditions of the tuyere, the welding seams for sealing among the components can be effectively prevented from cracking and leaking, and the service life of the tuyere is prolonged.

Example 2

As shown in fig. 2, the new tuyere in this embodiment is different from that in embodiment 1 in that:

the water jacket 2 comprises a flange 25, an outer sleeve 21, an inner sleeve 22 and a fluid director 23, the outer sleeve 21 is sleeved outside the inner sleeve 22, the outer sleeve 21, the inner sleeve 22 and the flange 25 enclose an inner cavity 24, the fluid director 23 is arranged in the inner cavity 24, and the front end of the inner sleeve 22 is connected with the front end of the outer sleeve 21 through a first annular welding line 26; in the outermost water jacket 2, the rear end of the outer sleeve 21 is integrally connected with the front end of the flange 25, the rear end of the inner sleeve 22 is connected with the front end of the flange 25 through a third annular welding seam 28, and the first annular welding seam 26 and the third annular welding seam 28 are both positioned on the inner side wall of the water jacket 2; in the water jacket 2 at the innermost layer, the rear end of the outer sleeve 21a is connected with the front end of the flange 25a through a fourth annular welding seam 29a, the rear end of the inner sleeve 22a is integrally connected with the front end of the flange 25a, and the first annular welding seam 26a and the fourth annular welding seam 29a are both positioned on the outer side wall of the water jacket 2; the flange 25 (flange 25 a) is provided with a water inlet and a water outlet. Generally, the flow guide 23 (flow guide 23 a) divides an inner cavity 24 (inner cavity 24 a) surrounded by the outer sleeve 21 (outer sleeve 21 a), the inner sleeve 22 (inner sleeve 22 a) and the flange 25 (flange 25 a) to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

Example 3

As shown in fig. 3, the new tuyere in this embodiment is different from that in embodiment 1 in that:

the water jacket 2 comprises a flange 25, an outer sleeve 21, an inner sleeve 22 and a fluid director 23, the outer sleeve 21 is sleeved outside the inner sleeve 22, the outer sleeve 21, the inner sleeve 22 and the flange 25 enclose an inner cavity 24, the fluid director 23 is arranged in the inner cavity 24, and the front end of the inner sleeve 22 is connected with the front end of the outer sleeve 21 through a first annular welding line 26; in the outermost water jacket 2, the rear end of the outer sleeve 21 is connected with the front end of the flange 25 through a fourth annular welding line 29, the rear end of the inner sleeve 22 is integrally connected with the front end of the flange 25, the first annular welding line 26 is positioned on the inner side wall of the water jacket 2, and the fourth annular welding line 29 is positioned on the rear end part of the outer side wall of the water jacket 2; in the water jacket 2 at the innermost layer, the rear end of an outer sleeve 21a is integrally connected with the front end of a flange 25a, the rear end of an inner sleeve 22a is connected with the front end of the flange 25a through a third annular welding seam 28a, a first annular welding seam 26a is positioned on the outer side wall of the water jacket 2, and a third annular welding seam 28a is positioned on the rear end part of the inner side wall of the water jacket 2; the flange 25 (flange 25 a) is provided with a water inlet and a water outlet. Generally, the flow guide 23 (flow guide 23 a) divides an inner cavity 24 (inner cavity 24 a) surrounded by the outer sleeve 21 (outer sleeve 21 a), the inner sleeve 22 (inner sleeve 22 a) and the flange 25 (flange 25 a) to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

Example 4

As shown in fig. 4, the new tuyere in this embodiment is different from that in embodiment 1 in that:

the water jacket 2 comprises a flange 25, an outer sleeve 21, an inner sleeve 22 and a fluid director 23, wherein the outer sleeve 21 is sleeved outside the inner sleeve 22, the outer sleeve 21, the inner sleeve 22 and the flange 25 enclose an inner cavity 24, the fluid director 23 is arranged in the inner cavity 24, and the front end of the inner sleeve 22 is connected with the front end of the outer sleeve 21 through a first annular welding seam 26; in the outermost water jacket 2, the rear end of the outer sleeve 21 is connected with the front end of the flange 25 through a fourth annular welding line 29, the rear end of the inner sleeve 22 is connected with the front end of the flange 25 through a third annular welding line 28, the first annular welding line 26 and the third annular welding line 28 are both positioned on the inner side wall of the water jacket 2, and the fourth annular welding line 29 is positioned on the rear end part of the outer side wall of the water jacket 2; in the water jacket 2 at the innermost layer, the rear end of the outer sleeve 21a is connected with the front end of the flange 25a through a fourth annular welding seam 29a, the rear end of the inner sleeve 22a is connected with the front end of the flange 25a through a third annular welding seam 28a, the first annular welding seam 26a and the fourth annular welding seam 29a are both positioned on the outer side wall of the water jacket 2, and the third annular welding seam 28a is positioned on the rear end part of the inner side wall of the water jacket 2; the flange 25 (flange 25 a) is provided with a water inlet and a water outlet. Generally, the flow guide 23 (flow guide 23 a) divides an inner cavity 24 (inner cavity 24 a) surrounded by the outer sleeve 21 (outer sleeve 21 a), the inner sleeve 22 (inner sleeve 22 a) and the flange 25 (flange 25 a) to form a cooling channel, and two ends of the cooling channel are respectively communicated with the water inlet and the water outlet.

Example 5

As shown in fig. 5, the difference between the new tuyere in this embodiment and embodiment 1 is that:

in order to prevent the front end of the tuyere body 1 from being worn or damaged by melting, the front end of the tuyere body 1 is provided with a wear-resistant layer 4, and the wear-resistant layer 4 is coated on the front end of the water jacket 2 which is positioned on the outer layer. The wear-resistant layer 4 is made of ceramic. Above-mentioned wearing layer 4 can protect the front end of wind gap body 1, slows down the wearing and tearing progress of wind gap body 1 front end, and the cooling water in the cooling channel of wind gap body 1 front end also is cooling wearing layer 4 simultaneously, lets wearing layer 4 can work under the lower temperature, improves wearing layer 4's life, and then improves the life of this kind of novel wind gap.

Example 6

As shown in fig. 6, the difference between the new tuyere in this embodiment and embodiment 5 is that:

the wear-resistant layer 4 is coated on the front end of the water jacket 2 in the inner layer.

Example 7

As shown in fig. 7, the new tuyere in this embodiment is different from that in embodiment 5 in that:

the wear-resistant layer 4 is coated on the front end of each water jacket 2.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and the equivalent or simple change of the structure, the characteristics and the principle described in the present patent idea is included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a novel wind gap, includes the wind gap body, its characterized in that: the tuyere body is formed by sequentially nesting at least two water jackets from inside to outside; the water jacket is positioned on the innermost layer, and the welding seam for sealing is positioned on the outer side wall or the rear end part of the water jacket; the welding seam for sealing is positioned on the inner side wall or the rear end part of the water jacket; in two adjacent water jackets, the outer side wall of the water jacket positioned at the inner layer is in contact fit with the inner side wall of the water jacket positioned at the outer layer; the water jacket at the innermost layer is provided with a hot air channel which runs forwards and backwards.

2. The novel tuyere according to claim 1, characterized in that:

in two adjacent water jackets, the front end and the rear end of the water jacket positioned at the inner side are respectively and fixedly connected with the front end and the rear end of the water jacket positioned at the outer side;

the tuyere body is formed by nesting two water jackets, and one water jacket is positioned at the outer side of the other water jacket; the welding seam for sealing is positioned on the outer side wall of the water jacket or the rear end part of the water jacket; the welding seam for sealing is positioned on the inner side wall of the water jacket or the rear end part of the water jacket; the outer side wall of the water jacket positioned at the inner layer is in contact fit with the inner side wall of the water jacket positioned at the outer layer; the water jacket at the inner layer is provided with the hot air channel;

the front end of the tuyere body is provided with a wear-resistant layer; the material of the wear-resistant layer is metal alloy or ceramic.

3. The novel tuyere of claim 2, characterized in that:

the wear-resistant layer is coated on the front end of the water jacket on the outer layer;

or the wear-resistant layer is coated on the front end of the water jacket in the inner layer;

or the wear-resistant layer is coated on the front end of each water jacket.

4. The novel tuyere according to claim 1, characterized in that: the water jacket comprises an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve and the inner sleeve enclose an inner cavity, the fluid director is arranged in the inner cavity, the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line, and the rear end of the inner sleeve is connected with the rear end of the outer sleeve through a second annular welding line; the rear end of the outer sleeve or the rear end of the inner sleeve is provided with a water inlet and a water outlet; in the outermost water jacket, a first annular welding line is positioned on the inner side wall of the water jacket, and a second annular welding line is positioned on the rear end face of the water jacket.

5. The novel tuyere of claim 1, characterized in that: the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the outermost water jacket, the rear end of the outer sleeve is integrally connected with the front end of the flange, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, and the first annular welding line and the third annular welding line are both positioned on the inner side wall of the water jacket; the flange is provided with a water inlet and a water outlet.

6. The novel tuyere according to claim 1, characterized in that: the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the outermost water jacket, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, the first annular welding line and the third annular welding line are both positioned on the inner side wall of the water jacket, and the fourth annular welding line is positioned on the rear end part of the outer side wall of the water jacket; the flange is provided with a water inlet and a water outlet.

7. The novel tuyere according to claim 1, characterized in that: the water jacket comprises an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve and the inner sleeve enclose an inner cavity, the fluid director is arranged in the inner cavity, the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line, and the rear end of the inner sleeve is connected with the rear end of the outer sleeve through a second annular welding line; the rear end of the outer sleeve or the rear end of the inner sleeve is provided with a water inlet and a water outlet; in the water jacket of the innermost layer, a first annular welding line is positioned on the outer side wall of the water jacket, and a second annular welding line is positioned on the rear end face of the water jacket.

8. The novel tuyere according to claim 1, characterized in that: the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the water jacket of the innermost layer, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is integrally connected with the front end of the flange, and the first annular welding line and the fourth annular welding line are positioned on the outer side wall of the water jacket; the flange is provided with a water inlet and a water outlet.

9. The novel tuyere according to claim 1, characterized in that: the water jacket comprises a flange, an outer sleeve, an inner sleeve and a fluid director, the outer sleeve is sleeved outside the inner sleeve, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, and the front end of the inner sleeve is connected with the front end of the outer sleeve through a first annular welding line; in the water jacket of the innermost layer, the rear end of the outer sleeve is connected with the front end of the flange through a fourth annular welding line, the rear end of the inner sleeve is connected with the front end of the flange through a third annular welding line, the first annular welding line and the fourth annular welding line are both positioned on the outer side wall of the water jacket, and the third annular welding line is positioned on the rear end part of the inner side wall of the water jacket; the flange is provided with a water inlet and a water outlet.

10. The new tuyere according to any one of claims 4 to 9, characterized in that:

the fluid director includes inlet tube, outlet pipe and a plurality of water conservancy diversion piece, and each water conservancy diversion piece will inside cavity is divided into a plurality of communicating hydroeciums in proper order, the water inlet passes through the inlet tube and communicates with first hydroecium, the delivery port passes through the outlet pipe and communicates with last hydroecium.