Detachable sealing device for furnace top flue opening of fully-closed submerged arc furnace
By adopting a combined structure of support guardrail slot, insulating isolation pad and sealing filling layer at the flue gas connection port of the fully sealed ore furnace, the problem of poor sealing effect is solved, the insulation and sealing effect of the equipment is achieved, and the production and environment safety is ensured.
Patent Information
- Application Number
- CN202422211646.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-10
AI Technical Summary
There is a problem of poor sealing effect or even failure at the flue gas connection ports of the existing fully sealed ore furnace, which leads to flue gas spillover and affects production safety and environment.
The combined structure of supporting guard plate slot, insulating isolation pad layer and sealing filling layer is adopted. The supporting guard plate is installed on the steps and is connected with high-temperature resistant fastening bolts. The insulating isolation pad layer is closely fitted with the inlet of the flue gas pipeline, and the sealing filling layer is filled between the insulating isolation pad layer and the flue gas pipeline inlet to form effective insulation and sealing.
It achieves good insulation performance and sealing effect of the equipment, avoids flue gas spillage, ensures production safety and environmental safety, is convenient to install and does not affect the original equipment structure.
Smart Images
Figure CN223283464U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sealing flue gas ducts of fully enclosed submerged arc furnaces for ferroalloy smelting, and particularly relates to a detachable sealing device for a flue outlet on a top of a fully enclosed submerged arc furnace. Background Art
[0002] Currently, the ferroalloy smelting industry has fully embarked on a green, low-pollution development path. Environmentally friendly, fully enclosed submerged arc furnaces have become widely popular within the industry. Compared to traditional submerged arc furnaces, fully enclosed submerged arc furnace production requires the flue gas produced by smelting within the furnace to be fed into a purification system for further treatment and utilization. However, as the number of process steps increases, the potential safety hazards also increase. For flue gas purification, the most important thing is to ensure the sealing performance of the equipment itself to prevent flue gas from escaping from the connection ports and flanges, which poses a safety hazard to the production environment.
[0003] Currently, the sealing method used at the connection between the furnace body and the flue gas duct is generally solid filler sealing. However, since the flue gas duct needs to be insulated and isolated from the furnace body, insulating block pads are often used to avoid direct contact between the flue gas duct and the furnace body, thereby ensuring good insulation performance between the two. However, due to the gaps between the insulating pads, the sealing fillers used are all solid particles with small particle size. Therefore, with long-term use, the sealing fillers will experience certain wear and tear, resulting in poor sealing effect or even failure. Among the currently used sealing devices, few can ensure good insulation performance of the equipment while also strengthening the equipment's sealing performance. Utility Model Content
[0004] The purpose of the utility model is to provide a detachable sealing device for a flue outlet on the top of a fully enclosed ore arc furnace to solve the above problems.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A detachable sealing device for the top flue opening of a fully enclosed ore-fired furnace comprises a flue gas duct inlet and a furnace top flue gas outlet arranged below the flue gas duct inlet; a flue opening connecting flange is provided at the connection between the furnace top flue gas outlet below the flue gas duct inlet; a plurality of insulating pads are evenly arranged between the flue opening connecting flange and the furnace top flue gas outlet; a support guard plate slot is provided on the top surface of the flue opening connecting flange; a support guard plate, an insulating isolation pad layer and a sealing filling layer are arranged in sequence from outside to inside between the support guard plate slot and the flue gas duct inlet.
[0007] In order to further realize the present invention, a step is provided on the inner wall of the support guard plate slot, and the support guard plate is clamped on the step.
[0008] In order to further realize the present invention, the support guard plate includes two symmetrically arranged semicircular guard plates, and mutually matching connecting plates are provided at the junction of the guard plates, and fastening bolts are provided on the connecting plates.
[0009] In order to further realize the present invention, the bottom end of the insulating isolation pad is tightly fitted with the top surface of the flue outlet connecting flange.
[0010] In order to further realize the present invention, the sealing filling layer is arranged between the insulating isolation pad layer and the outer wall of the smoke duct inlet.
[0011] In order to further realize the present invention, the support guard plate slot and the flue opening connecting flange are an integrated structure.
[0012] In order to further realize the present invention, the fastening bolts are high temperature resistant fastening bolts.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] The utility model is a fully enclosed detachable sealing device for the top flue of a submerged arc furnace, which has a reasonable structural design, convenient installation, safe and reliable use, avoids poor or even failure of the equipment sealing effect to cause smoke overflow, ensures the overall insulation performance of the equipment, and provides protection for the safety of operators and regional working environment.
[0015] The utility model is designed with a support guard plate slot and a support guard plate mounted on the inner step of the support guard plate slot, which has a good fastening and sealing effect; the insulating isolation pad is installed on the inner side of the support guard plate, fits tightly with the support guard plate, and the lower end forms an effective insulating isolation between the flue gas pipe and the flue outlet connecting flange, ensuring a good insulation effect between the equipment; the sealing filling layer is filled with small-sized solid particles, which further enhances the sealing effect of the original equipment.
[0016] The utility model strengthens the insulation effect between devices and improves the sealing performance of the original equipment on the basis of ensuring that the original equipment structure is not changed, enhances the sealing effect of the flue connection port of the fully enclosed submerged arc furnace, and ensures good sealing performance of the entire equipment.
[0017] The utility model is installed and used in an assembled manner, which can effectively avoid the phenomenon of difficulty in disassembly during the subsequent equipment shutdown inspection and maintenance operations, ensure the convenience of equipment installation and disassembly, avoid changes to the original equipment structure, and ensure the stability of the original equipment structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the utility model;
[0019] The meanings of the accompanying figures are as follows: 1. Support guard plate slot; 2. Support guard plate; 2-1. Guard plate; 2-2. Connecting plate; 3. Fastening bolt; 4. Insulating isolation pad; 5. Sealing filling layer; 6. Step; 7. Flue outlet connecting flange; 8. Flue gas duct inlet; 9. Furnace top flue gas outlet; 10. Insulating pad. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0021] like Figure 1 As shown, a detachable sealing device for the top flue of a fully enclosed submerged arc furnace comprises a flue gas duct inlet 8 and a furnace top flue gas outlet 9 arranged below the flue gas duct inlet. A flue gas duct connecting flange 7 is arranged at the connection of the furnace top flue gas outlet 9 below the flue gas duct inlet 8. A plurality of insulating pads 10 are evenly arranged between the flue gas duct connecting flange 7 and the furnace top flue gas outlet 9. A supporting guard plate slot 1 is arranged on the top surface of the flue gas duct connecting flange 7. The supporting guard plate slot 1 and the flue gas duct connecting flange 7 are an integrated structure. There are a plurality of insulating pads 10 arranged between the supporting guard plate slot 1 and the flue gas duct inlet 8 from the outside to the inside. A support guard plate 2, an insulating isolation pad layer 4 and a sealing filling layer 5 are arranged. A step 6 is arranged on the inner wall of the support guard plate slot 1. The support guard plate 2 is clamped on the step 6. The support guard plate 2 includes two symmetrically arranged semicircular arc-shaped guard plates 2-1. The joints of the guard plates 2-1 are provided with mutually matching connecting plates 2-2. The connecting plates 2-2 are provided with fastening bolts 3 for connection. The fastening bolts 3 are high-temperature resistant fastening bolts. The bottom end of the insulating isolation pad layer 4 is tightly fitted with the top surface of the flue port connecting flange 7. The sealing filling layer 5 is arranged between the insulating isolation pad layer 4 and the outer wall of the flue gas duct inlet 8.
[0022] A support guard plate slot 1 for sealing is made on the original flue opening connecting flange 7, an insulating isolation pad 4 is laid inside the support guard plate slot 1, the support guard plate 2 is installed in the support guard plate slot 1, and is fastened with high-temperature resistant fastening bolts 3 to ensure the overall structural stability of the device, an insulating isolation pad 4 is installed on the inner side of the support guard plate 2, and fits tightly with the inner wall of the support guard plate 2, the lower end of the insulating isolation pad 4 isolates the flue gas duct inlet 8 from the flue opening connecting flange 7 to form good insulation, and a sealing filling layer 5 is filled between the insulating isolation pad 4 and the flue gas duct inlet 8 to ensure that the filling is tight and the overall sealing performance of the equipment is guaranteed.
Claims
1. A detachable sealing device for a fully enclosed submerged arc furnace top flue opening, comprising a flue duct inlet and a furnace top flue gas outlet disposed below the flue duct inlet, a flue opening connecting flange disposed at the connection between the flue duct inlet and the furnace top flue gas outlet, and a plurality of insulating spacers evenly disposed between the flue opening connecting flange and the furnace top flue gas outlet, characterized in that: A support guard plate slot (1) is provided on the top surface of the flue outlet connecting flange (7), and a support guard plate (2), an insulating isolation pad layer (4) and a sealing filling layer (5) are provided in sequence from outside to inside between the support guard plate slot (1) and the flue gas duct inlet (8).
2. The detachable sealing device for the flue outlet of a fully enclosed submerged arc furnace according to claim 1, characterized in that: A step (6) is provided on the inner wall of the support guard plate slot (1), and the support guard plate (2) is clamped on the step (6).
3. The detachable sealing device for the flue outlet of a fully enclosed submerged arc furnace as claimed in claim 2, characterized in that: The supporting guard plate (2) comprises two symmetrically arranged semicircular guard plates (2-1), wherein mutually matching connecting plates (2-2) are provided at the joints of the guard plates (2-1), and fastening bolts (3) are provided on the connecting plates (2-2) for connection.
4. The detachable sealing device for the top flue of a fully enclosed submerged arc furnace according to claim 3, characterized in that: The bottom end of the insulating isolation pad (4) is tightly fitted to the top surface of the flue outlet connecting flange (7).
5. The detachable sealing device for the top flue of a fully enclosed submerged arc furnace according to claim 4, characterized in that: The sealing filling layer (5) is arranged between the insulating isolation pad layer (4) and the outer wall of the smoke duct inlet (8).
6. The detachable sealing device for the flue outlet of a fully enclosed submerged arc furnace as claimed in claim 5, characterized in that: The support guard plate slot (1) and the flue outlet connecting flange (7) are an integrated structure.
7. The detachable sealing device for the flue outlet of a fully enclosed submerged arc furnace as claimed in claim 6, characterized in that: The fastening bolts (3) are high temperature resistant fastening bolts.