Double-peak countercurrent double-cavity tuyere

Abstract

The double-peak countercurrent double-cavity tuyere comprises a tuyere small sleeve body, a first front cavity water chamber is formed in the right end of the tuyere small sleeve body, and a second front cavity water chamber is formed in the position, located on the outer side of the first front cavity water chamber, of the right end of the tuyere small sleeve body. Through the arrangement of the flow guide partition plate, the interior of the flow guide box can be divided into two groups of different water chambers, the time required for cooling water to flow through the interior of the flow guide box is effectively prolonged, meanwhile, through the arrangement of the flow guide partition plate, the multiple groups of communicated water chambers are formed between the flow guide box and the tuyere small sleeve body due to the spiral shape of the flow guide partition plate, and the cooling effect is improved. And cooling water flowing through the first flow guide holes in the flow guide box can be effectively and spirally guided, the time for cooling the tuyere small sleeve body in the flowing process of the cooling water is further prolonged, and therefore the cooling effect on the tuyere small sleeve body is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace accessories, in particular to a double-peak countercurrent double-cavity tuyere. Background Art

[0002] The tuyere sleeve is an important device in the blast furnace air intake system. Its main function is to send hot air into the blast furnace. The tuyere sleeve is located in the blast furnace air intake system. Its working environment is extremely harsh. The front end faces a high temperature environment of nearly 2000 degrees Celsius. The temperature of the slag iron melt is above 1400 degrees Celsius. The temperature of the hot air sent into the blast furnace through the tuyere sleeve is generally above 1000 degrees Celsius. This equipment is generally made of copper, with cooling water passing through the inside for cooling. It protrudes into the furnace to prevent hot air and coal powder from directly scouring the furnace wall. The design of the tuyere sleeve is not only related to the normal operation of the blast furnace, but also largely determines the blast furnace. In order to improve production efficiency and product quality, the existing tuyere sleeves are currently prone to high temperatures due to the simple internal water channel structure and certain dead angles in the water channel during use, and local vacuum is easily formed inside the water channel, resulting in local overheating, which causes the front end of the tuyere sleeve to melt and collapse due to high temperature. At the same time, the tuyere sleeves are usually cast in blocks of copper or copper alloy and then processed by welding, and the welding performance of copper is poor, the welding quality is not easy to guarantee, and water leakage often occurs during use and needs to be replaced, which seriously affects the overall service life. Summary of the invention

[0003] The purpose of the present invention is to provide a double-peak countercurrent double-cavity tuyere, which has the advantages of improving the cooling capacity of the tuyere sleeve and eliminating the hidden danger of water leakage caused by traditional welding process, so as to extend the service life of the tuyere sleeve, improve the quality of use and improve the combustion rate.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-peak countercurrent double-cavity tuyere, comprising a tuyere sleeve body, a first front-cavity water chamber is provided at the right end of the tuyere sleeve body, a second front-cavity water chamber is provided at the right end of the tuyere sleeve body and located outside the first front-cavity water chamber, a water hole is provided between the surface of the second front-cavity water chamber and the surface of the first front-cavity water chamber, a guide box is fixedly connected to the right end of the inner cavity of the tuyere sleeve body, a first guide hole is provided at the lower end of the right side of the guide box, a second guide hole is provided at the upper end of the left side of the guide box, a drainage baffle is fixedly connected between the four sides of the inner cavity of the left side of the guide box, and a guide baffle is fixedly connected between the outer surface of the guide box and the right end of the inner cavity of the tuyere sleeve body.

[0005] As a preferred solution, the drainage baffle is in a ring shape, and the guide baffle is in a spiral shape.

[0006] As a preferred solution, the shapes of the first flow guide hole and the second flow guide hole are both circular, and the diameters of the first flow guide hole and the second flow guide hole are equal.

[0007] As a preferred embodiment, the upper end of the left side of the tuyere sleeve body is fixedly connected with a rear cavity water outlet pipe, and the lower end of the left side of the guide box and the lower end of the left side of the tuyere sleeve body are fixedly connected with a rear cavity water inlet pipe.

[0008] As a preferred solution, a front cavity water outlet pipe is fixedly connected between the left side of the second front cavity water chamber and the left side of the tuyere sleeve body, and the right end of the front cavity water outlet pipe is fixedly connected to the surface of the guide baffle.

[0009] As a preferred solution, a front cavity water inlet pipe is fixedly connected between the left side of the first front cavity water chamber and the left side of the tuyere sleeve body, and the surface of the guide box is fixedly connected to the right end of the front cavity water inlet pipe.

[0010] As a preferred solution, an inner hole is provided at the middle end of the air outlet sleeve body, and the shape of the inner hole is a trumpet-shaped structure.

[0011] As a preferred embodiment, the front cross-sectional shapes of the first front chamber water chamber and the second front chamber water chamber are both semicircular, and the side cross-sectional shapes of the first front chamber water chamber and the second front chamber water chamber are both annular.

[0012] As a preferred solution, a first baffle is fixedly connected to the surface of the first front chamber water chamber and located above the water through hole, and a second baffle is fixedly connected to the surface of the second front chamber water chamber and located above the water through hole.

[0013] As a preferred solution, a chamfer is provided on the right side of the outer surface of the tuyere sleeve body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can divide the interior of the guide box into two groups of different water chambers by setting the guide baffle, effectively prolonging the time required for cooling water to flow through the interior of the guide box. At the same time, by setting the guide baffle and because the shape of the guide baffle is spiral, multiple groups of connected water chambers are formed between the guide box and the tuyere sleeve body, which can effectively spirally guide the cooling water flowing through the first guide hole in the guide box, further prolonging the time for cooling the tuyere sleeve body during the flow of cooling water, thereby greatly improving the cooling effect of the tuyere sleeve body. At the same time, through the first front chamber water chamber and the second front chamber water chamber, the cooling water flowing through the first guide hole in the guide box can be effectively spirally guided. The setting of the chamber can form a double-peak countercurrent water chamber structure under the cooperation between the first front chamber water chamber and the second front chamber water chamber, so that the cooling water can flow along the surface of the first front chamber water chamber and the second front chamber water chamber in turn during the flow and then be discharged, which greatly prolongs the cooling time of the tuyere sleeve body during the flow of the cooling water, ensures the cooling effect of the tuyere sleeve body, and because the tuyere sleeve body is formed by pouring copper water into the casting mold, it effectively avoids the internal cooling water from the weld of the tuyere sleeve body during long-term use, and effectively improves the service life of the tuyere sleeve body.

[0016] 2. The present invention can be connected to external cooling water pipelines through the arrangement of the rear cavity water inlet pipe and the rear cavity water outlet pipe, and can be connected to external cooling water pipelines through the arrangement of the front cavity water inlet pipe and the front cavity water outlet pipe. Moreover, since the front cavity water inlet pipe is located inside the tuyere sleeve body and the guide box, and is located in the cooling water flowing between the tuyere sleeve body and the guide box, it can effectively prevent the cooling water transported inside the front cavity water inlet pipe from being heated by the wall surface of the tuyere sleeve body and then entering the first front cavity water chamber and the second front cavity water chamber. Since the tuyere sleeve body and the guide box are continuously cooled by the cooling water, the temperature of the cooling water flowing between the tuyere sleeve body and the guide box is reduced. The temperature is lower than that of the wall, thereby reducing the temperature rise of the cooling water inside the front cavity water inlet pipe during the transportation process, thereby improving the effect of cooling the air outlet sleeve body when the cooling water flows through the first front cavity water chamber and the second front cavity water chamber. Through the setting of the inner hole, since the shape of the inner hole is a trumpet-shaped structure, the air can be effectively compressed in the process of flowing to the right through the inner hole, thereby effectively improving the air flow rate. Through the setting of the first baffle plate and the second baffle plate, the interior of the first front cavity water chamber and the second front cavity water chamber can be effectively separated, so that the cooling water can flow through the front cavity water inlet pipe, the first front cavity water chamber, the water hole, the second front cavity water chamber and the front cavity water outlet pipe in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the present invention;

[0018] Figure 2This is a front cross-sectional structural diagram of the air outlet small sleeve body of the present invention;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the tuyere sleeve body in a top view of the present invention;

[0020] Figure 4 It is a schematic diagram of the left side structure of the first front chamber water chamber of the present invention.

[0021] In the figure: 1. air outlet sleeve body; 2. front cavity water outlet pipe; 3. rear cavity water inlet pipe; 4. front cavity water inlet pipe; 5. rear cavity water outlet pipe; 6. drainage baffle; 7. diversion box; 8. first diversion hole; 9. first front cavity water chamber; 10. second front cavity water chamber; 11. diversion baffle; 12. second diversion hole; 13. water hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 4 As shown, the present invention provides a double-peak countercurrent double-cavity tuyere, comprising a tuyere sleeve body 1, a first front chamber water chamber 9 is opened at the right end of the tuyere sleeve body 1, a second front chamber water chamber 10 is opened at the right end of the tuyere sleeve body 1 and located outside the first front chamber water chamber 9, a water hole 13 is opened between the surface of the second front chamber water chamber 10 and the surface of the first front chamber water chamber 9, a guide box 7 is fixedly connected to the right end of the inner cavity of the tuyere sleeve body 1, a first guide hole 8 is opened at the lower end of the right side of the guide box 7, a second guide hole 12 is opened at the upper end of the left side of the guide box 7, a drainage baffle 6 is fixedly connected between the four sides of the left side of the inner cavity of the guide box 7, and a guide baffle 11 is fixedly connected between the outer surface of the guide box 7 and the right end of the inner cavity of the tuyere sleeve body 1.

[0026] In the present technical solution, by setting the drainage baffle 6, the interior of the guide box 7 can be divided into two groups of different water chambers, effectively extending the time required for the cooling water to flow through the interior of the guide box 7. At the same time, by setting the guide baffle 11 and because the shape of the guide baffle 11 is spiral, a plurality of groups of interconnected water chambers are formed between the guide box 7 and the tuyere sleeve body 1, which can effectively spirally guide the cooling water flowing inside the guide box 7 and through the first guide hole 8, further extending the time for cooling the tuyere sleeve body 1 during the flow of the cooling water, thereby greatly improving the cooling effect of the tuyere sleeve body 1. At the same time, through the first front chamber water chamber 9 and the second front chamber water chamber 1 The arrangement of the cavity water chamber 10 can form a double-peak countercurrent water chamber structure under the cooperation between the first front cavity water chamber 9 and the second front cavity water chamber 10, so that the cooling water can flow along the surface of the first front cavity water chamber 9 and the second front cavity water chamber 10 in turn during the flow and then be discharged, which greatly prolongs the cooling time of the tuyere sleeve body 1 during the flow of the cooling water, ensures the cooling effect of the tuyere sleeve body 1, and because the tuyere sleeve body 1 is formed by pouring copper water into the casting mold, it effectively avoids the internal cooling water from the weld of the tuyere sleeve body 1 during long-term use, thereby effectively improving the service life of the tuyere sleeve body 1.

[0027] Embodiment 2:

[0028] Based on the first embodiment, the present invention is as follows Figure 1-Figure 4 As shown, the shape of the drainage baffle 6 is annular, the shape of the diversion baffle 11 is spiral, the shapes of the first diversion hole 8 and the second diversion hole 12 are both circular, the diameters of the first diversion hole 8 and the second diversion hole 12 are equal, the upper end of the left side of the tuyere small sleeve body 1 is fixedly connected with the rear cavity water outlet pipe 5, the lower end of the left side of the diversion box 7 and the lower end of the left side of the tuyere small sleeve body 1 are fixedly connected with the rear cavity water inlet pipe 3, the left side of the second front cavity water chamber 10 and the left side of the tuyere small sleeve body 1 are fixedly connected with the front cavity water outlet pipe 2, the right end of the front cavity water outlet pipe 2 is fixedly connected to the surface of the diversion baffle 11, the left side of the first front cavity water chamber 9 is fixedly connected to the tuyere small sleeve A front cavity water inlet pipe 4 is fixedly connected to the left side of the main body 1, and the surface of the guide box 7 is fixedly connected to the right end of the front cavity water inlet pipe 4. An inner hole is provided at the middle end of the air outlet sleeve main body 1, and the shape of the inner hole is a trumpet-shaped structure. The front cross-sectional shapes of the first front cavity water chamber 9 and the second front cavity water chamber 10 are both semicircular, and the side cross-sectional shapes of the first front cavity water chamber 9 and the second front cavity water chamber 10 are both annular. A first baffle is fixedly connected to the surface of the first front cavity water chamber 9 and located above the water through hole 13, and a second baffle is fixedly connected to the surface of the second front cavity water chamber 10 and located above the water through hole 13. A chamfer is provided on the right side of the outer surface of the air outlet sleeve main body 1.

[0029] In the present technical scheme, by setting the rear cavity water inlet pipe 3 and the rear cavity water outlet pipe 5, it is possible to connect with the external cooling water pipeline, and by setting the front cavity water inlet pipe 4 and the front cavity water outlet pipe 2, it is possible to connect with the external cooling water pipeline. Moreover, since the front cavity water inlet pipe 4 is inside the tuyere sleeve body 1 and the guide box 7, and is located in the cooling water flowing between the tuyere sleeve body 1 and the guide box 7, it is effectively avoided that the cooling water transported inside the front cavity water inlet pipe 4 is heated by the wall of the tuyere sleeve body 1 and then enters the first front cavity water chamber 9 and the second front cavity water chamber 10. Since the tuyere sleeve body 1 and the guide box 7 are continuously cooled by the cooling water, the cooling water flowing between the tuyere sleeve body 1 and the guide box 7 is prevented from being heated by the wall of the tuyere sleeve body 1. The water temperature is lower than the temperature of the wall, thereby reducing the temperature rise of the cooling water inside the front chamber water inlet pipe 4 during the transportation process, thereby improving the effect of cooling the air outlet sleeve body 1 when the cooling water flows through the first front chamber water chamber 9 and the second front chamber water chamber 10. Through the setting of the inner hole, since the shape of the inner hole is a trumpet-shaped structure, the air can be effectively compressed in the process of flowing to the right through the inner hole, thereby effectively improving the air flow rate. Through the setting of the first baffle plate and the second baffle plate, the interior of the first front chamber water chamber 9 and the second front chamber water chamber 10 can be effectively separated, so that the cooling water can flow through the front chamber water inlet pipe 4, the first front chamber water chamber 9, the water hole 13, the second front chamber water chamber 10 and the front chamber water outlet pipe 2 in sequence.

[0030] The working principle of the present invention is as follows: by setting the guide baffle 6, the interior of the guide box 7 can be divided into two groups of different water chambers, which effectively prolongs the time required for the cooling water to flow through the interior of the guide box 7. At the same time, by setting the guide baffle 11, and because the shape of the guide baffle 11 is spiral, a plurality of groups of connected water chambers are formed between the guide box 7 and the tuyere sleeve body 1, which can effectively spirally guide the cooling water flowing inside the guide box 7 and through the first guide hole 8, further prolonging the cooling time of the tuyere sleeve body 1 during the flow of the cooling water, thereby greatly improving the cooling effect of the tuyere sleeve body 1. At the same time, through the first front chamber water chamber 9 and the second The setting of the front chamber water chamber 10 can form a double-peak countercurrent water chamber structure under the cooperation between the first front chamber water chamber 9 and the second front chamber water chamber 10, so that the cooling water can flow along the surface of the first front chamber water chamber 9 and the second front chamber water chamber 10 in turn during the flow and then be discharged, which greatly prolongs the cooling time of the tuyere sleeve body 1 during the flow of cooling water, ensures the cooling effect of the tuyere sleeve body 1, and because the tuyere sleeve body 1 is formed by pouring copper water into the casting mold, it effectively avoids the internal cooling water from the weld of the tuyere sleeve body 1 during long-term use, and effectively improves the service life of the tuyere sleeve body 1.

[0031] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0032] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A double-peak countercurrent double-cavity tuyere, comprising a tuyere sleeve body (1), characterized in that: A first front chamber water chamber (9) is provided at the right end of the tuyere sleeve body (1), a second front chamber water chamber (10) is provided at the right end of the tuyere sleeve body (1) and outside the first front chamber water chamber (9), a water through hole (13) is provided between the surface of the second front chamber water chamber (10) and the surface of the first front chamber water chamber (9), a guide box (7) is fixedly connected to the right end of the inner cavity of the tuyere sleeve body (1), a first guide hole (8) is provided at the lower end of the right side of the guide box (7), a second guide hole (12) is provided at the upper end of the left side of the guide box (7), a drainage baffle (6) is fixedly connected around the left side of the inner cavity of the guide box (7), and a guide baffle (11) is fixedly connected between the outer surface of the guide box (7) and the right end of the inner cavity of the tuyere sleeve body (1).

2. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: The drainage baffle (6) is in the shape of a ring, and the guide baffle (11) is in the shape of a spiral.

3. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: The first flow guide hole (8) and the second flow guide hole (12) are both circular in shape, and the diameters of the first flow guide hole (8) and the second flow guide hole (12) are equal.

4. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: The upper end of the left side of the tuyere sleeve body (1) is fixedly connected to a rear cavity water outlet pipe (5), and the lower end of the left side of the guide box (7) and the lower end of the left side of the tuyere sleeve body (1) are fixedly connected to a rear cavity water inlet pipe (3).

5. The double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: A front cavity water outlet pipe (2) is fixedly connected between the left side of the second front cavity water chamber (10) and the left side of the tuyere sleeve body (1), and the right end of the front cavity water outlet pipe (2) is fixedly connected to the surface of the guide baffle (11).

6. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: A front cavity water inlet pipe (4) is fixedly connected between the left side of the first front cavity water chamber (9) and the left side of the tuyere small sleeve body (1), and the surface of the guide box (7) is fixedly connected to the right end of the front cavity water inlet pipe (4).

7. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: An inner hole is arranged at the middle end of the air outlet sleeve body (1), and the shape of the inner hole is a trumpet-shaped structure.

8. The double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: The front cross-sectional shapes of the first front chamber water chamber (9) and the second front chamber water chamber (10) are both semicircular, and the side cross-sectional shapes of the first front chamber water chamber (9) and the second front chamber water chamber (10) are both annular.

9. The double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: A first baffle is fixedly connected to the surface of the first front chamber water chamber (9) and located above the water through hole (13), and a second baffle is fixedly connected to the surface of the second front chamber water chamber (10) and located above the water through hole (13).

10. A double-peak countercurrent double-cavity tuyere according to claim 1, characterized in that: The right side of the outer surface of the air outlet small sleeve body (1) is provided with a chamfer.

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