A kind of plug device for dry quenching

Abstract

The present invention discloses a dry coke quenching center bolt device, which belongs to the technical field of dry coke quenching. A lifting handle is horizontally arranged on the top of a lifting rod, a cover body is horizontally arranged on the bottom of the lifting rod, the lifting rod is inserted into a center bolt shell, a sealing flange and a pressure cover are arranged at the connection between the lifting rod and the center bolt shell, the pressure cover is arranged on the upper part of the sealing flange, the lifting rod passes through the pressure cover and the sealing flange, a sealing sleeve is arranged between the pressure cover and the sealing flange, the stuffing in the sealing sleeve is tightened, the cover body is connected to the base, and a first bracket and a second bracket are welded on the sealing flange. The center bolt device solves the problem of poor sealing between the center bolt and the base, and also avoids the phenomenon that the original center bolt lifting rod is easy to deform and causes the center bolt to be unable to be lifted, while increasing the service life of the center bolt body, ensuring the control of the gas introduction amount, and stabilizing the dry coke quenching circulation system.

Description

Technical Field

[0001] The present invention relates to the technical field of dry coke quenching, and in particular to a plug device for dry coke quenching. Background Art

[0002] The CDQ center plug is used to control the amount of air introduced into the circulation system. The center plug is set in the CDQ furnace center plug layer, and the air is introduced by pressing the center plug cover against the hole on the upper part of the CDQ furnace ring flue. In actual production operation, since the original design of the cover is flat, directly pressing on the hole on the upper part of the ring flue cannot achieve a good sealing effect, and the air cannot be isolated when air introduction is not required. In addition, the ring flue is under negative pressure. If the shell is not sealed well, air will be sucked in from the joint surface of the cover and the hole, causing the gas composition of the circulation system to exceed the standard. In addition, the center plug lifting rod was originally designed as ordinary heat-resistant steel bars. In actual use, deformation and bending are inevitable, causing most of the center plugs to be unable to be lifted and dropped freely; the center plug lifting rod passes through the sealing flange on the center plug shell, and the gap between the lifting rod and the sealing flange will also cause air to be sucked into the center plug box, causing unstable gas composition in the circulation system. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a plug device for dry coke quenching which has good sealing performance, is resistant to deformation, is easy to operate and has a long service life.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dry quenching middle plug device, including a lifting rod, a lifting handle, a pressure cover, a sealing flange, a cover body and a base, the lifting handle is horizontally arranged on the top of the lifting rod, and the cover body is horizontally arranged on the bottom of the lifting rod, the lifting rod is inserted into the middle plug shell, and a sealing flange and a pressure cover are arranged at the connection between the lifting rod and the middle plug shell, the pressure cover is arranged on the upper part of the sealing flange, the lifting rod passes through the pressure cover and the sealing flange, a sealing sleeve is arranged between the pressure cover and the sealing flange, the packing in the sealing sleeve is tightened, the cover body is connected to the base, and a first bracket and a second bracket are welded on the sealing flange.

[0005] Preferably, the cover body is a circular groove structure formed by welding a plurality of L-shaped heat-resistant steel bars.

[0006] Preferably, the base is a groove-type structure, with an inner ring plate and an outer ring plate arranged inside the base, the height of the inner ring plate and the outer ring plate are both 50 mm, the inner ring plate is welded along the edge of the center bolt hole, and the outer ring plate is welded to the outer periphery of the inner ring plate, the width of the groove surrounded by the inner ring plate and the outer ring plate is not less than the width of the groove edge of the cover body, the groove is filled with an asbestos layer and fixed with refractory glue, the height of the asbestos layer is 40 mm, and when the cover body falls, the groove edge of the cover body is inverted in the groove of the base to form a flexible seal.

[0007] Preferably, graphite or fiber membrane is inserted into the sealing sleeve as filler.

[0008] Preferably, a lightweight casting material is cast on the outer surface of the lifting rod to increase the strength of the lifting rod and protect the lifting rod.

[0009] By adopting the technical solution of the present invention, the following beneficial effects can be obtained:

[0010] The dry coke quenching center plug device of the present invention has the following beneficial effects: 1. It solves the problem of poor sealing effect between the cover body and the center plug hole of the dry coke quenching center plug, forms a flexible seal with the groove edge of the cover body and the groove of the base, and the second bracket plays a pressing role, which greatly improves the sealing effect of the center plug; 2. It solves the problem that the lifting rod is easy to deform in actual use, and casts lightweight casting material to protect the lifting rod, realizes the free opening and closing of the center plug, and increases the service life of the center plug; 3. It solves the problem of air inhalation caused by the gap between the lifting rod and the sealing flange, and adds a sealing device to prevent air from being inhaled into the circulation system, thereby achieving the stability of the dry coke quenching circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following is a brief description of the contents and symbols in the drawings of this specification:

[0012] Figure 1 This is a schematic diagram of the structure of the bolt device;

[0013] Figure 2 This is the internal reinforcement frame diagram of the bolt device;

[0014] The markings in the above figures are: 1. Lifting rod; 2. Lifting handle; 3. Sealing flange; 4. Pressure cover; 5. Sealing sleeve; 6. Packing; 7. Cover body; 8. Base; 9. Asbestos layer; 10. First bracket; 11. Second bracket; 12. L-shaped heat-resistant steel bar; 13. Grab bar; 14. Steel bar cage; 15. Inner ring plate; 16. Outer ring plate. DETAILED DESCRIPTION

[0015] The following is a detailed description of the embodiments of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, etc., with reference to the accompanying drawings.

[0016] like Figure 1 , 2 As shown, the middle bolt of the dry quenching middle bolt device is made of 310S heat-resistant steel bars as the frame, the lifting rod 1 is made of steel bars with Φ=10mm, L=500mm, the lifting rod 1 steel bars are welded with Φ=5mm, L=10mm grabbers 13, the lifting rod 1 is cast and wrapped with lightweight castables, the lower end of the lifting rod 1 is welded with a cover body 7 frame, the cover body 7 frame is welded with L-shaped heat-resistant steel bars 12 with Φ=10mm, L=90mm, and the circular surface formed by the cover body 7 frame is vertically welded to the lower end of the lifting rod 1.

[0017] The lifting rod 1 passes through the sealing flange 3 when falling and lifting. A sealing device is set in the gap between the sealing flange 3 and the lifting rod 1. The sealing device consists of a pressure cover 4, a sealing sleeve 5, and a filler 6. The sealing sleeve 5 is welded on the sealing flange 3. The sealing sleeve 5 is stuffed with a filler 6 such as graphite or fiber membrane. A pressure cover 4 is set on the sealing sleeve 5 to adjust the sealing performance.

[0018] The upper part of the lifting rod 1 is welded with a handle 2 of Φ=10mm and L=120mm by steel bars, and the handle 2 is set in a T shape, and the lower part of the lifting rod 1 is connected to the cover body 7. The cover body 7 is set in an inverted groove structure, and the cover body 7 is provided with a groove edge along the circumference downward with L-shaped heat-resistant steel bars 12, and the cover body 7 is cast with a lightweight casting material. The outside of the cover body 7 is made of a steel cage 14 with Φ=2mm steel bars, and the steel cage 14 is welded on the lifting rod 1. Asbestos 9 is stuffed into the cage 14, and the cover body 7 acts on the base 8.

[0019] The base 8 is a groove-type structure, and the base 8 is provided with an inner ring plate 15 and an outer ring plate 16. The height of the inner ring plate 15 and the outer ring plate 16 are both 50 mm. The inner ring plate 15 is welded along the edge of the middle bolt hole, and the outer ring plate 16 is welded to the outer periphery of the inner ring plate 15. The width of the groove surrounded by the inner ring plate 15 and the outer ring plate 16 is not less than the width of the groove edge of the cover body 7. The groove is filled with an asbestos layer 9 and fixed with refractory cement. The asbestos layer 9 is 40 mm high. When the cover body 7 falls, the groove edge of the cover body 7 is inverted in the groove of the base 8 to form a flexible seal.

[0020] like Figure 1 , 2 As shown, the first bracket 10 and the second bracket 11 are symmetrically welded on the sealing flange 3. The first bracket 10 is set into a V shape with ordinary steel bars. When the lifting rod 1 is lifted, the handle 2 rotates and falls into the V-shaped support part of the first bracket 10. The second bracket 11 is set into an inverted V shape with ordinary steel bars. After the lifting rod 2 falls, the handle 2 is pressed down and rotated to allow the handle 2 to enter the inverted V-shaped part of the second bracket 11.

[0021] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A plug device for dry quenching coke, characterized by: It includes a lifting rod, a lifting handle, a pressure cover, a sealing flange, a cover body and a base. The lifting handle is arranged horizontally on the top of the lifting rod, and the cover body is arranged horizontally on the bottom of the lifting rod. The lifting rod is inserted into the middle bolt shell. The sealing flange and the pressure cover are arranged at the connection between the lifting rod and the middle bolt shell. The pressure cover is arranged on the upper part of the sealing flange. The lifting rod passes through the pressure cover and the sealing flange. A sealing sleeve is arranged between the pressure cover and the sealing flange. The packing in the sealing sleeve is tightened. The cover body is connected to the base. A first bracket and a second bracket are welded on the sealing flange. The first bracket and the second bracket are symmetrically welded on the sealing flange. The first bracket is set into a V shape with ordinary steel bars. When the lifting rod is lifted, the handle rotates and falls into the V-shaped support part of the first bracket. The second bracket is set into an inverted V shape with ordinary steel bars. After the lifting rod falls, the handle is pressed down and rotated to allow the handle to enter the inverted V-shaped part of the second bracket. The outside of the cover body is made of a steel cage made of Φ=2mm steel bars, the steel cage is welded to the lifting rod, asbestos is stuffed into the cage, and the cover body acts on the base.

2. The plug device for dry coke quenching according to claim 1, characterized in that: The cover body is a circular groove structure formed by welding a plurality of L-shaped heat-resistant steel bars.

3. The plug device for dry coke quenching according to claim 1, characterized in that: The base is a groove-type structure, with an inner ring plate and an outer ring plate arranged inside the base. The height of the inner ring plate and the outer ring plate are both 50 mm. The inner ring plate is welded along the edge of the center bolt hole, and the outer ring plate is welded to the outer periphery of the inner ring plate. The width of the groove surrounded by the inner ring plate and the outer ring plate is not less than the width of the groove edge of the cover body. The groove is filled with an asbestos layer and fixed with refractory glue. The height of the asbestos layer is 40 mm. When the cover body falls, the groove edge of the cover body is inverted in the groove of the base to form a flexible seal.

4. The plug device for dry coke quenching according to claim 1, characterized in that: The sealing sleeve is filled with graphite or fiber membrane as filler.

5. The plug device for dry coke quenching according to claim 1, characterized in that: The outer surface of the lifting rod is cast with a lightweight casting material to increase the strength of the lifting rod and protect the lifting rod.

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