Sealing device for coke oven main flue damper

Abstract

The utility model discloses a coke oven total flue gate sealing device, including sealing plate, bottom plate and support plate, and the bottom plate is fixed on the gate, and one end of sealing plate is fixed on the bottom plate, and the other end of sealing plate is pressed on the outer surface of door frame, and the outer surface of door frame is located the outside of the outer surface of bottom plate, and the one end of support plate is connected with the bottom plate and gate. The utility model solves the stable sealing problem of gate under high temperature environment and relative sliding condition with door frame.

Description

Technical Field

[0001] This utility model relates to the field of flue gate technology, and more specifically, to a sealing device for a coke oven main flue gate. Background Technology

[0002] To ensure that the emissions from coke oven flue gas meet environmental protection requirements, a desulfurization and denitrification device was added between the main flue and the chimney. A gate was installed on the main flue to intercept the flue gas emitted from the coke oven combustion chamber, which was then sent to the desulfurization and denitrification device for treatment to meet standards before being released into the atmosphere through the chimney.

[0003] The flue gas damper operates by moving vertically up and down. The flue gas temperature reaches approximately 260℃. The original design used high-temperature resistant ceramic fiber blankets installed on both sides of the damper frame for sealing. However, these blankets have poor wear resistance, and the large pressure difference across the damper caused severe damage after repeated movements. Under the pressure difference, the leaking high-temperature gas flow dispersed the damaged blankets, further widening the gap between the damper and frame, resulting in significant flue gas leakage. Furthermore, the installation of guide wheels for the moving damper at the location of the ceramic fiber blankets further increased the leakage. Large amounts of untreated flue gas leaked through the gaps between the damper and frame into the chimney and were directly emitted, causing pollutant emissions to exceed standards. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a sealing device for the main flue gate of a coke oven, which solves the problem of stable sealing of the gate under high temperature environment and relative sliding with the gate frame.

[0005] The present invention adopts the following technical solution:

[0006] The sealing device for the main flue gate of a coke oven includes a sealing plate, a base plate, and a support plate. The base plate is fixed to the gate, one end of the sealing plate is fixed to the base plate, and the other end of the sealing plate presses against the outer surface of the gate frame. The outer surface of the gate frame is located outside the outer surface of the base plate, and the support plate connects one end of the base plate to the gate.

[0007] Furthermore, the base plate and the gate's reinforcing ribs are connected by welding.

[0008] Furthermore, the support plate is perpendicular to the base plate, and there are multiple support plates arranged vertically.

[0009] Furthermore, the gate frame is I-shaped, and guide wheels are installed at both ends of the gate. The guide wheels are located inside the gate frame. Both the gate frame and the base plate are vertically installed, and sealing plates, base plates, and support plates are installed on both sides of the gate.

[0010] Furthermore, the sealing plate is L-shaped and consists of a long plate and a short plate. One end of the long plate is connected to the base plate by multiple bolts, and one end of the short plate is pressed against the door frame.

[0011] Furthermore, it also includes a pressure strip, which is pressed onto the long plate of the sealing plate, and the pressure strip, the base plate and the long plate are connected by bolts.

[0012] Furthermore, the sealing plate is made of stainless steel and has a thickness of 2mm.

[0013] Beneficial effects

[0014] 1. The sealing plate is made of stainless steel, which is resistant to high temperature, corrosion, and wear, and has high strength, ensuring a long-term stable sealing effect.

[0015] 2. The short plate of the sealing plate makes elastic pressure sliding contact with the door frame, always keeping it pressed tightly against the frame, thus enhancing the sealing effect.

[0016] 3. The sealing plate is installed as a single piece on the air inlet surface of the gate from top to bottom, without needing to make way for the guide wheels, thus reducing air leakage points. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a top view of an embodiment of the present invention;

[0019] Figure 3 This is a partial top view of an embodiment of the present invention;

[0020] Figure 4 This is a partial schematic diagram of an embodiment of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] As shown in the figure, this utility model discloses a sealing device for a coke oven main flue gate, including a sealing plate 1, a base plate 2 and a support plate 3. The base plate 2 is fixed on the gate 4, one end of the sealing plate 1 is fixed on the base plate 2, and the other end of the sealing plate 1 is pressed on the outer surface of the gate frame 5. The outer surface of the gate frame 5 is located outside the outer surface of the base plate 2. The support plate 3 connects one end of the base plate 2 and the gate 4.

[0023] The sealing plate 1 is fixed on the gate 4 and moves together with the gate 4. The other end of the sealing plate 1 presses against the gate frame 5 and slides relative to the gate frame 5 to achieve sealing.

[0024] In one embodiment of this utility model, the bottom plate 2 and the gate 4 are connected by welding.

[0025] The sealing plate 1 is installed on the side of the gate 4 with high wind pressure. Under the action of wind pressure, the sealing plate 1 fits more tightly with the gate frame 5 and the sealing effect is better.

[0026] When the gate 4 is stationary or moving up and down, the sealing plate 1 always remains pressed and adhered to the gate frame 5.

[0027] In one embodiment of this utility model, the support plate 3 is perpendicular to the base plate 2, and multiple support plates 3 are provided and vertically distributed.

[0028] In one embodiment of this utility model, the door frame 5 is I-shaped, and guide wheels 6 are respectively installed at both ends of the gate 4. The guide wheels 6 are located inside the door frame. Both the door frame 5 and the base plate 2 are vertically arranged. Sealing plates 1, base plates 2 and support plates 3 are installed on both sides of the gate 4. The sealing plate 1 is installed as a single piece from top to bottom on the air inlet surface of the gate, without needing to make way for the guide wheels 6, thus reducing air leakage points.

[0029] In one embodiment of this utility model, the sealing plate 1 is L-shaped and includes a long plate 11 and a short plate 12. One end of the long plate 11 is connected to the base plate 2 by multiple bolts 7, and one end of the short plate 12 is pressed against the door frame 5.

[0030] In one embodiment of this utility model, a pressure strip 8 is also included. The pressure strip 8 presses against the long plate 11 of the sealing plate 1. The pressure strip 8, the base plate 2, and the long plate 11 are connected by bolts 7. The pressure strip 8 serves to protect the long plate 11.

[0031] In one embodiment of this utility model, the sealing plate is made of stainless steel and has a thickness of 2mm. The sealing plate is resistant to high temperatures and corrosion.

[0032] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A coke oven main flue gate seal apparatus, characterized by: It includes a sealing plate, a base plate, and a support plate. The base plate is fixed to the gate. One end of the sealing plate is fixed to the base plate, and the other end of the sealing plate presses against the outer surface of the gate frame. The outer surface of the gate frame is located outside the outer surface of the base plate. The support plate connects one end of the base plate to the gate.

2. The coke oven main flue gate seal apparatus as set forth in claim 1, characterized by: The base plate and the gate's reinforcing ribs are connected by welding.

3. The coke oven main flue gate seal apparatus as set forth in claim 1, characterized by: The support plate is perpendicular to the base plate, and there are multiple support plates arranged vertically.

4. The coke oven main flue gate seal apparatus as set forth in claim 1, characterized by: The gate frame is I-shaped, and guide wheels are installed at both ends of the gate. The guide wheels are located inside the gate frame. Both the gate frame and the base plate are vertically installed. Sealing plates, base plates and support plates are installed on both sides of the gate.

5. The coke oven main flue gate seal apparatus as set forth in claim 1, characterized by: The sealing plate is L-shaped and consists of a long plate and a short plate. One end of the long plate is connected to the base plate by multiple bolts, and one end of the short plate is pressed against the door frame.

6. A coke oven main flue gate seal apparatus as claimed in claim 5, wherein: It also includes a pressure strip, which is pressed onto the long plate of the sealing plate. The pressure strip, the base plate, and the long plate are connected by bolts.

7. The coke oven main flue gate seal apparatus as set forth in claim 1, characterized by: The sealing plate is made of stainless steel and has a thickness of 2mm.

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