Gas sealing structure of blast-furnace tuyere

Abstract

The utility model provides a blast furnace tuyere gas sealing structure which comprises a tuyere large sleeve, a tuyere medium sleeve and a tuyere small sleeve, the tuyere large sleeve, the tuyere medium sleeve, the tuyere medium sleeve and the tuyere small sleeve are fixed through conical connecting pieces, and sealing rings for improving sealing performance are arranged on the outer side faces of the conical connecting pieces. And each conical connecting piece is provided with two grooves, and the sealing rings are arranged in the corresponding grooves, so that the multi-leakage-prevention connector has the advantage of multiple leakage prevention.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical technique field especially relates to a blast furnace tuyere coal gas sealing structure. BACKGROUND

[0002] The blast furnace is a closed high-temperature high-pressure smelting container, the air supply device blows hot air into the furnace through the tuyere sleeve installed on the furnace shell, the high-temperature high-pressure coal gas flow generated by coke combustion reduces iron ore to produce hot molten iron, the tuyere sleeve generally includes a large sleeve, a middle sleeve and a small sleeve, and is a necessary equipment for blast furnace smelting, but the conical contact surface between each tuyere sleeve often has a coal gas leakage problem. SUMMARY

[0003] The utility model discloses a blast furnace tuyere coal gas sealing structure, which realizes the function through the cooperation of the sealing ring structure and the conical connecting piece structure, and solves the problem of easy coal gas leakage between adjacent sleeves.

[0004] To achieve the above object, the utility model provides the following technical scheme: a blast furnace tuyere coal gas sealing structure, including tuyere big sleeve, tuyere middle sleeve and tuyere small sleeve, the tuyere big sleeve, tuyere middle sleeve and the tuyere middle sleeve and tuyere small sleeve all are fixed through the conical connecting piece, the outside of the conical connecting piece is provided with the sealing ring that increases the sealing.

[0005] Preferably, the outside of each conical connecting piece is provided with two grooves, and the sealing ring is arranged in the corresponding groove.

[0006] Preferably, the sealing ring is a heterogeneous silica gel ring.

[0007] Preferably, a gap between two adjacent sealing rings is coated with glass mud.

[0008] Preferably, the tuyere big sleeve is made of cast iron, the tuyere middle sleeve and the tuyere small sleeve are made of red copper, and the three are coaxially arranged.

[0009] The utility model has the advantages of:

[0010] (1) The utility model can better limit the sealing ring in the groove, prevent the sliding phenomenon of the sealing ring during installation, and the number of sealing rings can be designed as two or three according to actual needs to adapt to various situations.

[0011] (2) The utility model discloses a glass mud is set, and two silica gel rings are installed to the air port position after smearing glass mud in the middle, under the condition of being heated, glass mud can form honeycomb to increase a safety defense line of sealed gas, and in the installation process, glass mud is made to flow to the definite position and fill the air leakage position through the mode of vibration extrusion, and glass mud can also play the protection role under the damage of silica gel ring at high temperature.

[0012] (3) The utility model discloses a special-shaped silica gel ring is set, and the practicality is stronger, has excellent weather resistance, can use long -term without deformation or damage under extreme temperature and bad environment, can also ensure that internal material does not leak, and external pollutant also can not enter.

[0013] Summarized above, the utility model has multiple leakproof advantages. DRAWINGS EXPLANATION

[0014] Figure 1 It is the whole structure schematic drawing of the utility model;

[0015] Figure 2 It is the taper connecting piece schematic drawing of the utility model;

[0016] Figure 3 It is the taper connecting piece and sealing ring cooperation schematic drawing of the utility model;

[0017] Figure 4 It is the utility model Figure 1 The partial enlarged schematic drawing of A place in the utility model. SPECIFIC IMPLEMENTATION

[0018] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0019] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0020] Embodiment one

[0021] Figures 1-4 The utility model discloses a blast furnace tuyere coal gas sealing structure, including tuyere big cover 1, tuyere medium cover 2 and tuyere small cover 3, the tuyere big cover 1, tuyere medium cover 2 and tuyere medium cover 2 and tuyere small cover 3 all pass through the taper connecting piece 4 and fix, the outside of taper connecting piece 4 is provided with the sealing ring 41 of increasing sealing.

[0022] In this embodiment, the sealing ring 41 is arranged between the adjacent sleeve and the tuyere to increase the sealing property.

[0023] Combined Figure 2 As shown in the figure, two grooves 42 are formed in each taper connecting piece 4, and the sealing ring 41 is arranged in the corresponding groove 42.

[0024] In this embodiment, the groove 42 can better limit the sealing ring 41 therein, preventing the sealing ring 41 from sliding during installation. Of course, the number of sealing rings can be designed as two or three according to actual needs to adapt to various situations.

[0025] Combined Figure 3 As shown in the figure, the sealing ring 41 is a special-shaped silica gel ring.

[0026] In this embodiment, the special-shaped silica gel ring is a special type of silica gel sealing ring 41, which is different from the common circular or square sealing ring in design and shape. It may be more suitable for specific application scenarios and has stronger practicality. It has excellent weather resistance and can be used for a long time without deformation or damage in extreme temperature and harsh environment. It can also ensure that the internal substances of the blast furnace do not leak.

[0027] Combination Figure 3 As shown, the gap between the two adjacent sealing rings 41 is coated with glass mud.

[0028] In this embodiment, the two silica gel rings are coated with glass mud in the middle and then installed at the tuyere position. Under the condition of heating, the glass mud forms a honeycomb shape to increase a safety line for sealing the gas. In the installation process, the glass mud is squeezed by vibration to flow to the actual position to fill the air leakage position. The silica gel ring can also play a protective role when the glass mud is damaged at high temperature.

[0029] Combination Figure 1 As shown, the tuyere large sleeve material is cast iron, the tuyere middle sleeve and the tuyere small sleeve are made of red copper, and the three are coaxially arranged.

[0030] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blast furnace tuyere gas sealing structure, comprising a large tuyere sleeve, a medium tuyere sleeve, and a small tuyere sleeve, characterized in that: The large air vent sleeve, the middle air vent sleeve, and the middle air vent sleeve and the small air vent sleeve are all fixed together by a tapered connector, and a sealing ring is provided on the outer side of the tapered connector to increase the sealing performance.

2. The blast furnace tuyeres gas sealing structure according to claim 1, characterized in that: Two grooves are formed on the outer surface of each of the tapered connectors, and the sealing ring is disposed in the corresponding groove.

3. The blast furnace tuyeres gas sealing structure according to claim 2, characterized in that: The sealing ring is an irregularly shaped silicone ring.

4. The blast furnace tuyeres gas sealing structure according to claim 1, characterized in that: Apply glass putty to the gap between two adjacent sealing rings.

5. The blast furnace tuyeres gas sealing structure according to claim 1, characterized in that, The large air vent sleeve is made of cast iron, while the middle and small air vent sleeves are made of copper and are coaxially arranged.

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