Energy saving element for blast furnace peripheral stretching heating furnace

Abstract

The utility model provides a kind of blast furnace surrounding extension heating furnace energy -conserving element, belong to heating furnace energy -conserving reconstruction technical field, energy -conserving element includes main element, the cavity of the one end recess of main element is equipped with, rectangular slot is equipped with in the cavity and is in circular array, the other end of main element is equipped with mounting hole, the surface of main element is equipped with rough part covered with. The scheme provided in the application can increase the surface area in the hearth, thereby enhancing the heat exchange of the hearth, improving the heating speed of the hearth, reducing the fuel consumption of the heating furnace, and achieving energy saving and emission reduction.

Description

Technical Field

[0001] This utility model belongs to the field of energy-saving renovation technology of heating furnaces, and in particular relates to an energy-saving element for a blast furnace circumference extension heating furnace. Background Technology

[0002] Installing tens of thousands of energy-saving, semi-enclosed cup-shaped components with closed rear ends and open front ends inside the furnace chamber of a steel rolling heating furnace can increase the furnace circumference, thereby increasing the surface area of ​​the furnace chamber, improving the furnace heating speed, reducing consumption, and enhancing heating quality and output.

[0003] However, the surface of the energy-saving element is smooth, making it difficult to hold during installation and easy to slip out of the hand. Furthermore, according to the basic theory of heat transfer model of heating furnace, the furnace enclosure extension ω is the ratio of the furnace wall surface area to the material surface area. When the furnace enclosure extension ω is doubled, the radiant heat received by the steel billet per unit time period will increase by 15%. However, after the energy-saving element is installed, the surface area of ​​the inner surface of the furnace is only increased by a limited amount, and the furnace enclosure extension is still difficult to reach more than double. The heat exchange in the furnace is limited, and the radiant heat received by the steel billet per unit time period cannot be increased to more than 15%, thus affecting the energy-saving effect. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides an energy-saving element for a blast furnace circumference extension heating furnace, which increases the surface area inside the furnace, thereby enhancing heat exchange in the furnace, increasing the heating speed of the furnace, reducing fuel consumption of the heating furnace, and achieving energy saving and emission reduction.

[0005] In order to achieve the purpose of this utility model, the following solution is proposed:

[0006] An energy-saving element for a blast furnace circumferential extension heating furnace includes a main element with an inverted truncated cone structure. One end of the main element has a recessed cavity with multiple rectangular grooves arranged in a circumferential array inside the cavity. The other end of the main element has a mounting hole. The peripheral sidewall surface of the main element is covered with a rough portion to increase the surface area and roughness of the peripheral sidewall.

[0007] Furthermore, the end of the main component with the mounting hole is the upper end, and the axis of the mounting hole is collinear with the axis of the main component.

[0008] Furthermore, the rough portion includes bosses.

[0009] Furthermore, the side of the boss furthest from the main component is recessed and has a radiation pit.

[0010] Furthermore, the bosses are arranged in rows, and each row of bosses is arranged in a circumferential array on the peripheral sidewall of the main component.

[0011] Furthermore, each rectangular slot corresponds to the space between two adjacent rows of bosses.

[0012] The beneficial effects of this utility model are as follows:

[0013] The cavity inside the main component is equipped with a rectangular groove, and the outer wall is covered with bosses. Each boss is machined with a heat-gathering pit, which not only increases the surface roughness of the main component, making it easier to hold during installation, but also multiplies the surface area of ​​the main component, thereby increasing the furnace enclosure extension, increasing the surface area inside the furnace, and enhancing the radiative heat transfer intensity of the heating furnace. Attached Figure Description

[0014] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0015] Figure 1 A three-dimensional schematic diagram of the overall structure of this application is shown.

[0016] Figure 2 This application shows Figure 1 A magnified view of part A in the diagram.

[0017] Figure 3 A schematic diagram of the overall structure of this application is shown in orthographic projection.

[0018] Figure 4 This application shows Figure 3 A schematic diagram of a downward-facing projection.

[0019] The markings in the diagram are: main component-1, cavity-2, rectangular groove-21, mounting hole-3, rough part-4, boss-41, and radial pit-42. Detailed Implementation

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1-4 As shown, this embodiment provides an energy-saving element for a blast furnace circumference extension heating furnace, including a main body element 1. The lower end of the main body element 1 is recessed into the interior of the main body element 1, and its axis is collinear with the axis of the main body element 1. The inner wall of the cavity 2 is provided with rectangular grooves 21 arranged in a circular array. The upper end of the main body element 1 is provided with a mounting hole 3, and the mounting hole 3 communicates with the cavity 2 for installing the connecting parts of the main body element 1 and the heating furnace.

[0022] A roughened portion 4 is provided on the outer wall of the main component 1 to increase the surface roughness of the main component 1, thereby making the main component 1 easier to hold during installation. Figure 2As shown, the roughened part 3 includes bosses 31, which are arranged in rows along the height direction of the main body element 1. Each row of bosses 31 is arranged in a circumferential array along the outer wall of the main body element 1. Each boss 31 has a corresponding radiation pit 42 on its top. This not only reduces the weight of the main body element 1, but also promotes energy concentration. As a result, the surface roughness of the main body element 1 increases, which further increases the heat transfer area of ​​the furnace and increases the furnace circumference extension by more than double. This significantly enhances the heat transfer intensity of the heating furnace. The heat received by the billet per unit time period can be increased by more than 15%. Moreover, with a lighter weight, the main body element 1 can be more firmly bonded to the furnace foundation for a long time, which can ensure the continuous energy-saving transformation efficiency of the heating furnace.

[0023] like Figures 3-4 As shown, the projection of the rectangular groove 21 on the outer wall of the main component 1 is located between two adjacent rows of protrusions 41, which is used to ensure the strength of the energy-saving component.

[0024] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. An energy-saving element for a blast furnace circumferential extension heating furnace, comprising a main element (1) with an inverted truncated cone structure, a cavity (2) recessed at one end of the main element (1), a plurality of rectangular grooves (21) arranged in a circumferential array within the cavity (2), and a mounting hole (3) at the other end of the main element (1), characterized in that, The peripheral sidewall surface of the main component (1) is covered with a rough portion (4) to increase the surface area and roughness of the peripheral sidewall.

2. The energy-saving element for blast furnace circumference extension heating furnace according to claim 1, characterized in that, The upper end of the main component (1) is provided with a mounting hole (3), and the axis of the mounting hole (3) is collinear with the axis of the main component (1).

3. The energy-saving element for blast furnace circumference extension heating furnace according to claim 1, characterized in that, The rough part (4) includes a boss (41).

4. The energy-saving element for blast furnace circumference extension heating furnace according to claim 3, characterized in that, The side of the boss (41) away from the main component (1) is recessed and has a radial pit (42).

5. The energy-saving element for a blast furnace circumference extension heating furnace according to claim 3, characterized in that, The bosses (41) are arranged in rows, and each row of bosses (41) is arranged in a circular array on the peripheral sidewall of the main component (1).

6. The energy-saving element for blast furnace circumference extension heating furnace according to claim 5, characterized in that, Each rectangular slot (21) corresponds to the space between two adjacent rows of bosses (41).

Images