Throat valve body assembly replacement device of desulfurization injection system

Abstract

The utility model relates to the field of steelmaking equipment, and discloses a throat valve body assembly replacement device of a desulfurization injection system, which comprises a replacement valve body, the front side and the rear side of the replacement valve body are respectively provided with a front surface and a rear surface, and the upper side and the lower side of the replacement valve body are respectively provided with an upper surface and a lower surface. A left surface and a right surface are arranged on the left side and the right side of the replacement valve body respectively, a connecting mechanism is arranged on the inner wall of the replacement valve body and comprises a penetrating assembly and a mounting assembly, the penetrating assembly comprises counter bores, the counter bores are formed in the inner walls of the front surface and the rear surface, and round holes are formed in the positions, close to the circle centers of the counter bores, of the replacement valve body. The upper surface is provided with a through hole vertically penetrating to the lower surface. According to the utility model, the replacement valve body formed by integrally processing the 40Cr alloy steel is integrally formed without other assemblies, so that the structure is simple, the maintenance is convenient, the equipment maintenance efficiency is improved, and meanwhile, the cost of spare parts is reduced and saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steelmaking equipment especially relates to a throat valve body assembly replacement device of desulfurization injection system. BACKGROUND

[0002] In many industrial enterprises, such as steel mills, in order to reduce the pollution of harmful gases such as sulfur dioxide generated in the combustion or production process to the environment, desulfurization process is widely used, and the throat valve body assembly in the desulfurization injection system is mainly responsible for controlling the flow and pressure of the injection medium (such as air, steam or other gases) in this process to ensure that the desulfurizer can fully mix with the sulfur-containing gas under suitable conditions and react.

[0003] The existing desulfurization and slag removal process injection system 86O throat valve is imported equipment, and the valve body assembly in the equipment is composed of a valve cover, an adjusting bushing, a clamping flange and accessories. Each component is subjected to material scouring for a long time in actual production, and is severely worn at some fixed positions, which affects the stable operation of the injection system.

[0004] According to actual data statistics, each set of 86O throat valve body assembly needs to replace all components every two years or so, and each component of the valve body assembly is ordered according to the order number provided by the foreign party. After the arrival, the components are replaced respectively. Since no complete assembly test is conducted, installation problems caused by tolerance matching between new and old components and new components occur in the actual use and assembly process. In addition, the imported equipment is high in price and long in order cycle, which not only causes inconvenience to equipment maintenance, but also occupies a large amount of equipment cost. Therefore, a throat valve body assembly replacement device of a desulfurization injection system is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a throat valve body assembly replacement device of a desulfurization injection system, which aims to improve the problem of "imported equipment is high in price and long in order cycle, which not only causes inconvenience to equipment maintenance, but also occupies a large amount of equipment cost" in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a throat valve body assembly replacement device of a desulfurization injection system, comprising a replacement valve body, the front and rear sides of the replacement valve body are respectively provided with a front surface and a rear surface, the upper and lower sides of the replacement valve body are respectively provided with an upper surface and a lower surface, the left and right sides of the replacement valve body are respectively provided with a left surface and a right surface, a connecting mechanism is arranged on the inner wall of the replacement valve body, the connecting mechanism comprises a penetrating component and a mounting component, the penetrating component comprises a counterbore, the counterbore is arranged in the inner wall of the front surface and the rear surface, a circular hole is arranged near the center of the counterbore of the replacement valve body, and a penetrating hole is arranged vertically through the upper surface to the lower surface.

[0007] As a further description of the above technical scheme:

[0008] The mounting assembly comprises M8 threaded holes which are arranged in the inner walls of the front surface and the rear surface, and M10 threaded holes which are arranged in the inner walls of the upper surface and the lower surface.

[0009] As a further description of the above technical solution:

[0010] The alternative valve body is made of 40Cr alloy steel.

[0011] As a further description of the above technical solution:

[0012] The depth of the counterbore is 15 mm, and the diameter is 88 mm.

[0013] As a further description of the above technical solution:

[0014] The counterbore is provided with a 2 mm 45° chamfer at the edge of the front surface.

[0015] As a further description of the above technical solution:

[0016] The circular hole has a radius of 52 mm.

[0017] As a further description of the above technical solution:

[0018] The alternative valve body is provided with a through hole with a diameter of 8 mm at the inner wall near the left side of the counterbore.

[0019] As a further description of the above technical solution:

[0020] The through hole has a diameter of 25 mm and vertically penetrates the circular hole.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1. In the utility model, the alternative valve body is integrally processed from a piece of 40Cr alloy steel, and is integrally formed without other components, so that the structure is simple, maintenance is convenient, equipment maintenance efficiency is improved, spare part cost is saved, and the overall performance and adaptability are improved.

[0023] 2. In the utility model, the through hole replaces the fan-shaped gap between the adjusting bushing and the valve cover in the original valve body assembly, and facilitates processing under the premise of meeting the original function, so that the overall performance and adaptability are improved. DRAWINGS

[0024] Fig. 1 It is a perspective structural schematic view of the overall device in the utility model;

[0025] Fig. 2 It is a perspective structural schematic view of the overall device in the utility model;

[0026] Fig. 3 It is the back view elevation perspective structure schematic diagram of the whole device in the utility model.

[0027] Legend:

[0028] 1, alternative valve body; 21, counterbore; 22, through hole; 23, round hole; 31, M8 threaded hole; 32, M10 threaded hole; 4, through hole; 5, chamfer; 6, front surface; 61, rear surface; 7, upper surface; 71, lower surface; 8, left surface; 81, right surface. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Reference Figs. 1-3 , the utility model provides a kind of embodiment: a desulfurization injection system throat valve body assembly replacement device, including alternative valve body 1, alternative valve body 1 is set to 40Cr alloy steel, appearance is 135*90*120 cuboid, its material and the material of existing valve body assembly same, by integral molding structure is simple, it is convenient to overhaul, improve equipment maintenance efficiency, while it can reduce and save spare parts expense, alternative valve body 1 front and rear side is set to front surface 6 and rear surface 61 respectively, side length is 135mm, 120mm respectively, alternative valve body 1 upper and lower side is set to upper surface 7 and lower surface 71 respectively, side length is 135mm, 90mm respectively, alternative valve body 1 left and right side is set to left surface 8 and right surface 81 respectively, side length is 120mm, 90mm respectively, alternative valve body 1 inner wall is provided with connecting mechanism, for connecting alternative valve body 1 on existing device and working, connecting mechanism includes through component and installation component, through component includes counterbore 21, counterbore 21 is set in the inner wall of front surface 6 and rear surface 61, the depth of counterbore 21 is 15mm, diameter is 88mm, provides accurate positioning and stable embedding space for the installation of other components, guarantee the firmness of connection, alternative valve body 1 is close to the center of counterbore 21 and set with round hole 23, the center radius of round hole 23 is 52mm, for replacing bushing in original valve body assembly, provides flow passage for desulfurization injection medium, upper surface 7 is set with through hole 22 vertically through to lower surface 71, the diameter of through hole 22 is 25mm and vertically through round hole 23, the center line intersection of through hole 22 at the right side 60mm of upper surface 7 is center, and through hole 22 is close to upper surface 7 and lower surface 71 and set with 1.5mm 45 ° chamfer 5.

[0031] The mounting assembly comprises M8 threaded holes 31 formed in the inner walls of the front surface 6 and the rear surface 61, the M8 threaded holes 31 have a diameter of 8 mm and a depth of 20 mm, and are respectively arranged in four groups with the center points being the intersection points of the horizontal center line offset angle 45° lines of the front surface 6 and the rear surface 61 and the center of the counterbore 21, and the specifications, positions and number of the screw holes for connecting other components on the original valve body assembly remain unchanged, and M10 threaded holes 32 with a diameter of 10 mm and a depth of 20 mm are formed in the inner walls of the upper surface 7 and the lower surface 71, and four groups of the M10 threaded holes 32 are respectively arranged with the center points being the center points of the corners of the upper surface 7 and the lower surface 71, which are 15 mm away from the long side and 10 mm away from the short side, and the specifications, positions and number of the screw holes for connecting other components on the original valve body assembly remain unchanged.

[0032] The counterbore 21 and the edge of the front surface 6 are provided with a plurality of chamfers 5 with an angle of 45° and a width of 2 mm.

[0033] A through hole 4 with a diameter of 8 mm is formed in the inner wall of the left side of the counterbore 21 of the replacement valve body 1, which is used to replace the original fan-shaped gap between the adjusting bushing and the valve cover in the original valve body assembly, and facilitates processing under the premise of meeting the original function, thereby improving the overall performance and adaptability.

[0034] Working principle: when the existing replacement valve body 1 is replaced and installed, the four groups of M8 threaded holes 31 with a diameter of 8 mm and a depth of 20 mm in the inner walls of the front surface 6 and the rear surface 61 and with the center points being the intersection points of the horizontal center line offset angle 45° lines and the center of the counterbore 21 can be used to install the connection components related to the front and rear directions, and these connection components are fixed in the system in the front and rear directions through the threaded cooperation with the M8 threaded holes 31.

[0035] The M10 threaded holes 32 with a diameter of 10 mm and a depth of 20 mm in the inner walls of the upper surface 7 and the lower surface 71 at the corners 15 mm away from the long side and 10 mm away from the short side can stably install the replacement valve body 1 in the corresponding position of the system, ensure that the replacement valve body 1 does not displace during the working process, enable the replacement valve body 1 to be installed, improve the equipment maintenance efficiency, and reduce the spare parts cost.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A replacement device for a throat valve assembly of a desulfurization injection system, comprising a replacement valve body (1), characterized in that: The front and back sides of the alternative valve body (1) are respectively set as front surface (6) and rear surface (61), the upper and lower sides of the alternative valve body (1) are respectively set as upper surface (7) and lower surface (71), the left and right sides of the alternative valve body (1) are respectively set as left surface (8) and right surface (81), the inner wall of the alternative valve body (1) is provided with a connecting mechanism, the connecting mechanism comprises a through component and a mounting component, the through component comprises a counterbore (21), the counterbore (21) is arranged in the inner wall of the front surface (6) and the rear surface (61), the alternative valve body (1) is provided with a circular hole (23) near the center of the counterbore (21), and the upper surface (7) is provided with a through hole (22) vertically penetrating to the lower surface (71).

2. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The mounting component comprises an M8 threaded hole (31), the M8 threaded hole (31) is arranged in the inner wall of the front surface (6) and the rear surface (61), and the inner wall of the upper surface (7) and the lower surface (71) is provided with an M10 threaded hole (32).

3. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The alternative valve body (1) is made of 40Cr alloy steel.

4. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The depth of the counterbore (21) is 15mm, and the diameter is 88mm.

5. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The counterbore (21) is provided with a chamfer (5) of 2mm and 45° at the edge of the front surface (6).

6. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The circular hole (23) has a center radius of 52mm.

7. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The inner wall of the alternative valve body (1) near the left side of the counterbore (21) is provided with a through hole (4) with a diameter of 8mm.

8. A throat valve body assembly replacement device for a desulfurization injection system according to claim 1, characterized in that: The diameter of the through hole (22) is 25mm, and it vertically penetrates the circular hole (23).

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