Integrated water-cooling air supply outlet

Abstract

The utility model discloses an integrated water-cooling air supply outlet which comprises an outer barrel, an inner barrel and an inner barrel. The inner cylinder is cylindrical, and a first annular space is formed between the inner cylinder and the outer cylinder; the flange is located at one end of the outer cylinder and one end of the inner cylinder, and the outer cylinder is fixedly connected with one end of the inner cylinder; the tuyere cap comprises an outer ring and an inner ring, a second annular space is formed between the inner ring and the outer ring, the tuyere cap is fixedly connected with the other end of the outer cylinder and the other end of the inner cylinder, the second annular space is communicated with the first annular space, a water flow space is defined by the second annular space and the first annular space, and an air supply channel is defined by the inner cylinder and the inner ring; the partition plate is arranged at the opposite position of the water flow space on the annular section, so that the water flow space is divided into a water inlet channel and a water outlet channel. The water-cooled welding part is an integrated water-cooled welding part, the weight of the water-cooled welding part is much lighter than the total weight of a traditional large sleeve, a traditional medium sleeve and a traditional small sleeve, the total weight is reduced by about 30%, and replacement and maintenance are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to smelting equipment technical field, specifically, relate to an integrated water cooling air supply port. BACKGROUND

[0002] At present, in ironmaking production, whether it is a blast furnace or other functional smelting furnace needs to have enough temperature in the hearth center to ensure complete melting of slag iron (above 1500 DEG C) and complete separation of liquid and solid substances. The air supply port is the core of the smelting furnace, and the air supply port is indirectly contacted with high-temperature liquid slag and molten iron. If the furnace condition is not smooth, the air supply port will be burnt out. The current smelting furnace air supply port is generally a three-section air supply port, that is, a large air supply port, a middle air supply port and a small air supply port. The small air supply port is deeply into the furnace and is closest to the slag iron, and the heat flow intensity of the small air supply port is the largest. The small air supply port is provided with circulating high-pressure water, and the water flow discharges the heat in the small air supply port outside the furnace to maintain its normal working state.

[0003] When the furnace condition is not smooth, the small air supply port is most easily burnt out. The small air supply port is a copper casting part, has relatively large density, has considerable rigidity, has relatively high price, and the small air supply port is a consumable part and needs to be prepared in batches for use at any time. Due to the high price, special care is needed. For smelting furnaces with special functions, the price of the copper air supply port accounts for a relatively high proportion. If a cheap and easy-to-operate air supply port with air supply function can be provided, it is the most anticipated thing in the industry. INVENTION CONTENTS

[0004] The utility model aims at using low-cost forged parts to weld an integrated full-water-cooled air supply port with a steel plate to replace pure copper casting parts to realize the air supply function, and finally realize low-cost manufacturing of the air supply port and reduce smelting production cost.

[0005] The application provides an integrated water-cooled air supply port, which comprises:

[0006] The outer cylinder is cylindrical.

[0007] The inner cylinder is cylindrical, and a first annular space is formed between the inner cylinder and the outer cylinder.

[0008] The flange is located at one end of the outer cylinder and the inner cylinder, and fixedly connects one end of the outer cylinder and the inner cylinder.

[0009] The air supply port cap comprises an outer ring and an inner ring, a second annular space is formed between the inner ring and the outer ring, the air supply port cap is fixedly connected with the other end of the outer cylinder and the inner cylinder, the second annular space is communicated with the first annular space, the first annular space and the second annular space jointly form a water flow space, and the inner cylinder and the inner ring jointly form an air supply channel.

[0010] The partition plate is arranged at a relative position on the annular section of the water flow space, so as to divide the water flow space into a water inlet channel and a water outlet channel.

[0011] Optionally, the partition plate comprises two water inlet channel partition plates and two water outlet channel partition plates, and the water inlet channel partition plates and the water outlet channel partition plates are arranged at opposite positions of the annular section of the water flow space and extend from the inner side of the flange to the end of the air outlet cap.

[0012] Optionally, three water inlet channel partition plates and three water outlet channel partition plates are arranged, and two water inlet channels are formed between the three water inlet channel partition plates, and two water outlet channels are formed between the three water outlet channel partition plates.

[0013] Optionally, the water inlet channel partition plate and the water outlet channel partition plate only extend in the first annular space.

[0014] Optionally, the air outlet cap is a forged steel piece and is connected to the inner cylinder and the outer cylinder by welding.

[0015] The angle between the water inlet channel and the water outlet channel on the annular section is greater than 90°.

[0016] The cross-sectional dimensions of the two water inlet channels are different, and the cross-sectional dimensions of the two water outlet channels are also different.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] The integrated water-cooled air outlet of the application is an integrated water-cooled welded piece, and the total weight is much lighter than that of the traditional large sleeve, medium sleeve and small sleeve, and the total weight is reduced by about 30%, and the replacement and maintenance are more convenient.

[0019] The air outlet is made of traditional forged steel pieces, and the price of one kilogram of forged steel is about 8 yuan, which is much lower than the price of more than 50 yuan per kilogram of copper medium and small sleeves, and the price is reduced by about 80%.

[0020] The service life is comparable to that of the copper air outlet small sleeve, and the damage of the air outlet is caused by the high-temperature adhesive in the furnace sticking to the air outlet and being burned out, and only the copper material has excellent heat conduction performance, which can guide the high-intensity heat flow into the cooling water. The forged steel element of the application has a large rigidity, and a relatively thin thickness can meet the strength requirement.

[0021] Since the application is a tubular water-cooled type, the air outlet cap is directly in contact with the cooling water, which can ensure that there is enough cooling water in the air outlet cap at any time to take away the incoming heat and maintain its normal work.

[0022] The replacement is convenient, and if the air outlet cap is burned out during work, it only needs to be cut open with an air gun and separated from the body, and then a new air outlet cap is assembled and welded with the inner cylinder and the outer cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A view of the sectional view of the integrated water-cooled air supply outlet.

[0024] Figure 2 A view of the sectional view of the integrated water-cooled air supply outlet. Figure 1 A view of the sectional view of the integrated water-cooled air supply outlet.

[0025] Figure 3 A view of the sectional view of the integrated water-cooled air supply outlet.

[0026] Figure 4 A view of the sectional view of the integrated water-cooled air supply outlet. Figure 3 A view of the sectional view of the integrated water-cooled air supply outlet.

[0027] Figure 5 A view of the sectional view of the integrated water-cooled air supply outlet. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection is unchanged. "Rotary connection" means that the relative rotation after connection is changed. The orientation terms mentioned in the embodiments of the present application, such as "up", "down", "in", "out" and the like, are only the direction of the drawings, therefore, the orientation terms used are for better, clearer illustration and understanding of the embodiments of the present application, and are not indicative or implied that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0030] Please refer to Figures 1 to 5The integrated water-cooled tuyere of the embodiment comprises an outer cylinder 10, which is cylindrical; an inner cylinder 20, which is also cylindrical and is located inside the outer cylinder 10, so that a first annular space is formed between the inner cylinder 20 and the outer cylinder 10; a flange 30, which is located at one end of the outer cylinder 10 and the inner cylinder 20 and fixedly connects the one end of the outer cylinder 10 and the inner cylinder 20; a tuyere cap 40, which is located at the other end of the outer cylinder 10 and the inner cylinder 20, fixedly connected with the other end of the outer cylinder 10 and the inner cylinder 20, has a second annular space, and communicates with the first annular space to form a water flow space; and a partition plate 50, which is arranged at a position opposite to the water flow space in the annular cross section, so as to divide the water flow space into a water inlet channel and a water outlet channel.

[0031] The outer cylinder 10 can be cylindrical, but the application does not exclude other cylindrical shapes. The inner cylinder 20 can be coaxially arranged inside the outer cylinder 10 to form a first annular space between the outer cylinder 10 and the inner cylinder 20. The tuyere cap 40 has an outer ring 41 and an inner ring 42, and the inner ring 42 is coaxially arranged with the outer ring 41 to form a second annular space between the inner ring 42 and the outer ring 41.

[0032] The most vulnerable part of the tuyere is the end of the device, that is, the tuyere cap at the top of the tuyere. The reason for the damage is that the high-temperature liquid slag and molten iron directly contact the tuyere cap, causing a large amount of heat to be transferred to the tuyere cap in a short time, and thus the tuyere cap is melted. In order to solve this problem, the tuyere cap is designed to be through, so that the cooling water entering the tuyere can directly flush the tuyere cap to quickly remove the heat from the outer surface.

[0033] The outer ring 41 of the tuyere cap 40 is fixedly connected with the outer cylinder 10, and the inner ring 42 of the tuyere cap 40 is fixedly connected with the inner cylinder 20, so that the first annular space between the outer cylinder and the inner cylinder communicates with the second annular space between the outer ring 41 and the inner ring 42, and the first annular space and the second annular space are referred to as a water flow space. The inner side of the inner cylinder 20 communicates with the inner side of the inner ring 42 to form a channel for gas flow, which is used to supply air to the blast furnace after the tuyere is installed on the blast furnace.

[0034] The tuyere cap is designed to be forged and can be fixedly connected with the inner cylinder and the outer cylinder by welding. Even if the tuyere cap is damaged due to sudden furnace conditions, it is easy to replace. The tuyere cap can be cut off by using an air gun, and the inner and outer rings have a small size and a radial distance of about 120 mm. The length of the welding rod is about 300 mm, so the welding operation is very simple. After the inner and outer rings are fully welded, they can be used as long as they do not leak water.

[0035] Figure 5 is to Figure 2Figure 6 is a cross-sectional view of B-B of Figure 5, the partition 50 includes two inlet passage partitions 51 and two outlet passage partitions 52, the inlet passage partitions 51 and the outlet passage partitions 52 are arranged at opposite positions of the water flow space on the annular cross-section, and extend from the inner side of the flange 30 to the end of the tuyere cap, specifically, extend only in the first annular space, thereby separating the first annular space into the inlet passage and the outlet passage. The two inlet passage partitions 51 form the inlet passage therebetween, and the two outlet passage partitions 52 form the outlet passage therebetween. Moreover, the angle between the inlet passage and the outlet passage on the annular cross-section is greater than 90°.

[0036] After the tuyere is installed on the blast furnace, the inlet pipeline is connected to the inlet passage, and the outlet pipeline is connected to the outlet passage. The cooling water enters the inlet passage from the inlet pipeline, and is directly delivered into the second annular space of the tuyere cap from the inlet passage. The cooling water fills the second annular space, and then flows into the first annular space to fill the entire water flow space as the water volume increases, and flows out from the outlet passage. The tuyere cap is a full-communication annular shell structure, and the water inflow and outflow both pass through the second annular space of the tuyere cap. The tuyere cap receives the maximum water flow and has the maximum cooling strength. Such a design ensures that the most critical part can be optimally cooled.

[0037] In some embodiments, two inlet passages and two outlet passages can also be provided, and correspondingly, three inlet passage partitions 51 and three outlet passage partitions 52 are provided, the three inlet passage partitions 51 form two inlet passages therebetween, and the three outlet passage partitions 52 form two outlet passages therebetween. Such a design can ensure that the water cavity is still filled with water even if only one inlet pipe supplies water (in the case of an accident).

[0038] In some embodiments, the cross-sectional dimensions of the two inlet passages are different, and the cross-sectional dimensions of the two outlet passages are also different. Specifically, for example, the cross-sectional dimension of one inlet passage is 10 cm 2 , the cross-sectional dimension of the other inlet passage is 5 cm 2 , the cross-sectional dimension of one outlet passage is 10 cm 2 , and the cross-sectional dimension of the other outlet passage is 5 cm 2 . The flow rate of the passage with a smaller pipe diameter is faster than that of the passage with a larger pipe diameter, which can make the cooling water reach the second annular space to cool the tuyere cap faster. Therefore, when the temperature of the tuyere cap is relatively low, the inlet passage and the outlet passage with a larger cross-sectional dimension can be used, and when the temperature of the tuyere cap is relatively high, the inlet passage and the outlet passage with a smaller cross-sectional dimension can be used. In this way, the power consumption of the pump for delivering cooling water to the inlet passage can be reduced.

[0039] Of course, the utility model can also have other various embodiments, and the person skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but these corresponding changes and deformations all belong to the protection scope of the claims of the utility model.

Claims

1. An integrated water cooled air supply outlet, characterized by, The application relates to a blast furnace tuyere, which comprises the following parts: an outer cylinder, which is in a cylindrical shape; an inner cylinder, which is in a cylindrical shape and forms a first annular space between the outer cylinder and the inner cylinder; a flange, which is arranged at one end of the outer cylinder and the inner cylinder and fixedly connects the one end of the outer cylinder and the inner cylinder; a tuyere cap, which comprises an outer ring and an inner ring and forms a second annular space between the inner ring and the outer ring, the tuyere cap is fixedly connected with the other end of the outer cylinder and the inner cylinder, the second annular space is communicated with the first annular space, the first annular space and the second annular space form a water flow space, and the inner cylinder and the inner ring form a blast passage; a partition plate, which is arranged at opposite positions of the water flow space in the annular section so as to divide the water flow space into an inlet water passage and an outlet water passage.

2. The integrated water cooled air supply outlet according to claim 1, wherein, The partition plate comprises two inlet water passage partition plates and two outlet water passage partition plates, the inlet water passage partition plates and the outlet water passage partition plates are arranged at opposite positions of the water flow space in the annular section and extend from the inner side of the flange to one end of the tuyere cap.

3. The integrated water cooled air supply outlet according to claim 1, wherein, Three inlet water passage partition plates and three outlet water passage partition plates are arranged, two inlet water passages are formed between the three inlet water passage partition plates, and two outlet water passages are formed between the three outlet water passage partition plates.

4. The integrated water cooled air supply outlet according to claim 2 or 3, characterized in that The inlet water passage partition plates and the outlet water passage partition plates only extend in the first annular space.

5. The integrated water cooled air supply outlet according to claim 1, wherein, The tuyere cap is a forged steel part and is connected with the inner cylinder and the outer cylinder through welding.

6. The integrated water cooled air supply outlet according to claim 2, wherein, The angle between the inlet water passage and the outlet water passage in the annular section is greater than 90 degrees.

7. The integrated water cooled air supply outlet according to claim 3, wherein, The cross-sectional sizes of the two inlet water passages are different, and the cross-sectional sizes of the two outlet water passages are also different.

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