Sealing box for leakage point of horn mouth of pre-converter

Abstract

The utility model relates to a sealing box for a leakage point of a horn mouth of a pre-converter. The sealing box for the leakage point of the horn mouth of the pre-converter comprises a top plate and a bottom plate which are arranged in parallel, the first side plate, the second side plate and the third side plate are vertically arranged between the top plate and the bottom plate; arc-shaped grooves are formed in the ends, away from the second side plate, of the first side plate and the third side plate. During use, the ends, far away from the second side plate, of the top plate, the bottom plate, the first side plate and the third side plate are welded with the leakage point of the horn mouth of the pre-converter to form a sealed box, and after the sealed box is manufactured and installed, smoke leakage in an area is thoroughly eliminated, and even if leakage occurs in the later period, the leakage position is located on the periphery of a tower body, and no crack is formed; operation in a high-temperature environment at a crack is not needed, the welding environment is superior to that before the sealing box is manufactured, and the operation difficulty is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of sealing technology, and in particular to a sealing box for a pre-converter bell mouth leakage point. Background Art

[0002] The pre-converter (tower) is a key component of sulfuric acid production systems. Its primary function is to initially convert the high-concentration sulfur-containing gas entering the converter, reducing the difficulty and energy consumption of subsequent conversion processes. The pre-converter allows the high-concentration SO₂ gas to be partially converted to SO₃ at a lower temperature, thus preventing overheating of the first catalyst layer in the converter.

[0003] See also Figure 3 This figure is a structural diagram of the pre-converter of the sulfuric acid plant of Yimen Copper Industry. The location of the first-layer outlet bell mouth of the sulfuric acid plant pre-converter (part A in the figure) is prone to frequent flue gas leakage incidents. In order to eliminate the leakage, technicians have carried out leak point detection and repair welding work many times.

[0004] However, since the flue gas leakage site is distributed in the gap between the tower body and the reducing pipe, the temperature there is relatively high (600℃). Every time the leak point is found and the repair welding operation is carried out, the personnel have to work in the high temperature environment of the gap, making the operation more difficult. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a sealing box for the leakage point of the bell mouth of the pre-converter.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions:

[0007] A sealing box for a pre-converter bell mouth leakage point, the sealing box for a pre-converter bell mouth leakage point comprising:

[0008] Parallel top and bottom plates;

[0009] a first side plate, a second side plate and a third side plate vertically arranged between the top plate and the bottom plate;

[0010] Wherein, an arc groove is formed at one end of the first side plate and the third side plate away from the second side plate.

[0011] Optionally, a pair of lifting ears are provided on the top plate.

[0012] Optionally, the connections between the top plate, the bottom plate, the first side plate, the second side plate and the third side plate are provided with rounded corners.

[0013] Optionally, the top plate, the bottom plate, the first side plate, the second side plate and the third side plate are all made of thin steel plates.

[0014] Optionally, the top plate, bottom plate, first side plate, second side plate and third side plate are high-temperature resistant thin steel plates.

[0015] Optionally, the top plate, bottom plate, first side plate, second side plate and third side plate are 12Cr1MoV steel plates.

[0016] Optionally, the top plate, bottom plate, first side plate, second side plate and third side plate are 304H stainless steel plates.

[0017] The beneficial effects of the present application are as follows: when in use, the top plate, the bottom plate, the first side plate and the third side plate are welded at one end away from the second side plate to the leakage point at the bell mouth of the pre-converter to form a sealed box. After the sealed box is manufactured and installed, the smoke leakage in the area is completely eliminated. Even if leakage occurs later, the leakage position is around the tower body and no gap is formed. There is no need to work in the high temperature environment at the gap. The welding environment is better than before the sealed box is manufactured, which greatly reduces the difficulty of the operation.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0020] Figure 1 Schematic diagram of the structure of a sealing box for a pre-converter bell mouth leakage point shown in an embodiment of the present application;

[0021] Figure 2 This is another structural schematic diagram of a sealing box for a pre-converter bell mouth leakage point shown in an embodiment of the present application;

[0022] Figure 3 It is a structural diagram of the pre-converter in the background technology of this application.

[0023] Reference numerals: 1 top plate, 2 bottom plate, 3 first side plate, 4 second side plate, 5 third side plate, 6 arcuate groove, 7 lifting ear, 8 rounded corner. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise expressly specified or limited. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0029] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0030] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0031] In order to make the purpose, technical solutions and beneficial effects of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings to facilitate understanding by technical personnel.

[0032] Example 1:

[0033] See also Figure 1 A sealing box for a pre-converter bell mouth leakage point, the sealing box for a pre-converter bell mouth leakage point comprising:

[0034] A top plate 1 and a bottom plate 2 are arranged in parallel;

[0035] A first side panel 3, a second side panel 4 and a third side panel 5 are vertically arranged between the top panel 1 and the bottom panel 2;

[0036] An arc-shaped groove 6 is formed on one end of the first side plate 3 and the third side plate 5 away from the second side plate 4 .

[0037] Specifically, the three sides of the top plate 1 and bottom plate 2 are vertically welded to the upper and lower side walls of the first side plate 3, the second side plate 4, and the third side plate 5, respectively. The two sides of the second side plate 4 are vertically welded to the side walls of the first side plate 3 and the third side plate 5, respectively. The curvature of the arcuate groove 6 matches the curvature of the bell mouth.

[0038] When in use, the top plate 1, the bottom plate 2, the first side plate 3 and the third side plate 5 are welded at one end away from the second side plate 4 to the leakage point of the pre-converter bell mouth to form a sealed box. After the sealed box is made and installed, the smoke leakage in the area is completely eliminated. Even if leakage occurs later, the leakage position is around the tower body and no gap is formed. There is no need to work in the high temperature environment of the gap. The welding environment is better than before the sealed box is made, which greatly reduces the difficulty of operation.

[0039] Example 2:

[0040] See also Figure 1 Based on the first embodiment, optionally, a pair of lifting ears 7 are provided on the top plate 1 .

[0041] Specifically, the lifting lug 7 is welded and fixed to the upper end surface of the top plate 1. The provision of the lifting lug 7 facilitates the movement and installation of the sealing box.

[0042] See also Figure 2 Optionally, fillets 8 are provided at the connections between the top plate 1 , the bottom plate 2 , the first side plate 3 , the second side plate 4 and the third side plate 5 .

[0043] Specifically, rounded corners 8 are provided at the junctions of the top panel 1, bottom panel 2, first side panel 3, second side panel 4, and third side panel 5. This disperses thermal stress and reduces the concentration of thermal stress at right-angled edges, thereby reducing the risk of damage or failure caused by thermal stress concentration. Furthermore, the risk of scratches caused by right-angled edges during installation is reduced.

[0044] Optionally, the top plate 1 , the bottom plate 2 , the first side plate 3 , the second side plate 4 and the third side plate 5 are all made of thin steel plates.

[0045] Specifically, thin steel plates are easy to process and manufacture, and convenient to weld. While ensuring structural strength, thin steel plates can also reduce the weight of the box and lower production costs.

[0046] Optionally, the top plate 1 , the bottom plate 2 , the first side plate 3 , the second side plate 4 and the third side plate 5 are high-temperature resistant thin steel plates.

[0047] Specifically, considering that the temperature at the leakage point of the pre-converter bell mouth is relatively high, the use of high-temperature resistant thin steel plates can effectively increase the service life of the box and maintain long-term sealing performance.

[0048] Optionally, the top plate 1 , the bottom plate 2 , the first side plate 3 , the second side plate 4 and the third side plate 5 are 12Cr1MoV steel plates.

[0049] Specifically, 12Cr1MoV steel plates have good high-temperature resistance and a certain strength, and can maintain stable physical and chemical properties in high-temperature environments of around 600 degrees Celsius. Compared with other high-temperature alloy steel plates, 12Cr1MoV steel plates are relatively low in cost.

[0050] Optionally, the top plate 1 , the bottom plate 2 , the first side plate 3 , the second side plate 4 and the third side plate 5 are 304H stainless steel plates.

[0051] Specifically, 304H stainless steel plates exhibit excellent corrosion resistance in media such as oxidizing acids, atmosphere, and water, and can resist erosion by a variety of chemical media, including acids, alkalis, and salts. 304H stainless steel plates can maintain stable performance in high-temperature environments and are not prone to oxidation and deformation. 304H stainless steel plates have good wear resistance and can resist friction and wear, extending the service life of equipment while reducing the frequency of equipment maintenance and replacement, thereby lowering production costs. In addition, the waste generated during the production and processing of 304H stainless steel plates can be recycled, which can reduce production costs and environmental pollution.

[0052] It should be noted that the structures and / or installation methods not detailed in this application are known to those skilled in the art in combination with common knowledge and / or existing technologies, and are not the focus of disclosure in this application and will not be further elaborated here.

[0053] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A sealing box for a pre-converter bell mouth leak point, characterized in that: The sealing box for the pre-converter bell mouth leakage point includes: A top plate (1) and a bottom plate (2) arranged in parallel; A first side plate (3), a second side plate (4) and a third side plate (5) vertically arranged between the top plate (1) and the bottom plate (2); Wherein, an arc-shaped groove (6) is provided on one end of the first side plate (3) and the third side plate (5) away from the second side plate (4).

2. The sealing box for the pre-converter bell mouth leakage point according to claim 1, characterized in that: A pair of lifting ears (7) are provided on the top plate (1).

3. The sealing box for the pre-converter bell mouth leakage point according to claim 1, characterized in that: Rounded corners (8) are provided at the connections between the top plate (1), the bottom plate (2), the first side plate (3), the second side plate (4) and the third side plate (5).

4. The sealing box for the pre-converter bell mouth leakage point according to claim 1, characterized in that: The top plate (1), the bottom plate (2), the first side plate (3), the second side plate (4) and the third side plate (5) are all made of thin steel plates.

5. The sealing box for the pre-converter bell mouth leakage point according to claim 4, characterized in that: The top plate (1), the bottom plate (2), the first side plate (3), the second side plate (4) and the third side plate (5) are high-temperature resistant thin steel plates.

6. The sealing box for the pre-converter bell mouth leakage point according to claim 5, characterized in that: The top plate (1), bottom plate (2), first side plate (3), second side plate (4) and third side plate (5) are 12Cr1MoV steel plates.

7. The sealing box for the pre-converter bell mouth leakage point according to claim 5, characterized in that: The top plate (1), the bottom plate (2), the first side plate (3), the second side plate (4) and the third side plate (5) are made of 304H stainless steel plates.

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