Sealing device for rapping part of waste heat boiler
By designing a sealing device in the vibration and cracking part of the waste heat boiler, the problem of easy cracking of the vibration beam and the boiler body weld is solved, and the effect of increasing the stress area and preventing cracking of the weld is achieved.
Patent Information
- Application Number
- CN202421291559.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The welds of the waste heat boiler vibration beam and the boiler body are prone to cracking, resulting in smoke leakage.
A sealing device is designed, including a sealing plate and a sealing frame, which surrounds the vibrating beam outside the boiler body, forms a sealing cavity and fills with fixed material, and increases the stress area between the vibrating beam and the boiler body.
Through the sealing device, the welding of the vibrating beam and the boiler body is completely sealed to reduce local stress, prevent weld cracking, and ensure sealing and stability.
Smart Images
Figure CN222437013U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field, and particularly relates to a sealing device for a vibration part of a waste heat boiler. Background Art
[0002] The oxygen-enriched bottom-blowing smelting furnace operates by blowing oxygen-enriched air from several oxygen lances at the bottom of the furnace, causing the molten pool to be violently stirred. The charge quickly completes the smelting processes of heating, dehydration, melting, oxidation, matte making and slag making in the molten pool. The reaction products, liquid matte and slag, are stratified in the molten pool due to their different specific gravities and are discharged from the matte outlet and slag outlet respectively.
[0003] The high-temperature flue gas generated by the bottom-blown furnace enters the waste heat boiler, and its maximum flue gas temperature is 1300℃. The flue gas first passes through the radiation zone of the waste heat boiler, and exchanges heat with the water-cooled wall and heating surface of the radiation zone, so that the flue gas temperature drops to about 670℃. Then it passes through the convection zone, and continues to exchange heat with the heating surfaces such as the tube wall and convection tube bundle in the convection zone, so that the flue gas temperature drops to about 350℃.
[0004] The high-temperature flue gas passes through the radiation cooling chamber and the convection zone, and the flue gas flow is smooth. The ash in the flue gas will adhere to the convection tube bundle and the membrane wall, and the ash needs to be removed by the vibration of the vibrating beam. At present, most companies basically use elastic vibrating hammers to hit the vibrating beam to remove the ash. The vibrating beam passes through the waste heat boiler body and is fixed to the convection tube bundle. The elastic vibrating hammer hits the vibrating beam on the outside of the boiler body. Due to the hitting action of the vibrating hammer, the weld between the vibrating beam and the boiler body is easy to crack and cause smoke leakage. Utility Model Content
[0005] The utility model aims to provide a sealing device for the vibration part of a waste heat boiler, which can increase the force-bearing area between the vibration beam and the boiler body and prevent the weld from cracking.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is a sealing device for the vibration part of the waste heat boiler, including a sealing plate and a sealing frame.
[0007] The sealing plate is fixed to one end of the vibrating beam away from the boiler body; the sealing frame surrounds the vibrating beam outside the boiler body, and one end of the sealing frame is fixed to the sealing plate, and the other end is fixed to the boiler body; the sealing plate, the sealing frame, the vibrating beam and the boiler body form a sealing cavity; the sealing cavity is filled with fixing material; the sealing frame is composed of a corrugated plate.
[0008] Preferably, a fixing seat is fixed on a side of the sealing plate away from the sealing frame; and a hammer is horizontally fixed on a side of the fixing seat away from the sealing plate.
[0009] Preferably, reinforcing plates are fixed on both sides of the rapping hammer respectively; the reinforcing plates are triangular in shape and are fixed to the fixing seat and the sealing plate.
[0010] Preferably, a fixing plate is fixed between the sealing frame and the boiler body; the vibration beam passes through the fixing plate and is fixed to the fixing plate by welding; and the sealing cavity is composed of the sealing plate, the sealing frame, the vibration beam and the fixing plate.
[0011] Preferably, the fixing material is a casting material.
[0012] The utility model discloses a sealing device for the vibration part of a waste heat boiler, which has the following advantages compared with the prior art:
[0013] (1) The welding point between the vibrating beam and the boiler body is completely sealed by means of sealing plates, sealing frames and fixing materials, thereby increasing the stress-bearing area between the vibrating beam and the boiler body, reducing local stress and preventing weld cracking;
[0014] (2) The impact energy can be better absorbed by the corrugated plate;
[0015] (3) Simple design, easy to use and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] like Figure 1 As shown, a sealing device for the vibration part of a waste heat boiler is installed on the vibration beam 2 outside the boiler body 1, and includes a sealing plate 31 and a sealing frame 32.
[0019] The sealing plate 31 is welded and fixed to the end of the vibrating beam 2 away from the boiler body 1; the sealing frame 32 surrounds the vibrating beam 2 outside the boiler body 1, and one end of the sealing frame 32 is welded and fixed to the sealing plate 31, and the other end is welded and fixed to the boiler body 1; the sealing plate 31, the sealing frame 32, the vibrating beam 2 and the boiler body 1 form a sealed cavity; the sealed cavity is filled with fixing material 33, wherein the fixing material 33 can be a casting material, which completely seals the welding point between the vibrating beam 2 and the boiler body 1, increases the force-bearing area between the vibrating beam 2 and the boiler body 1, reduces local force, prevents weld cracking, and can vibrate the vibrating beam 2 by hammering the sealing plate 31, so as to facilitate the vibration of the convection tube bundle or membrane wall in the boiler body 1; the side plates of the sealing frame 32 are composed of corrugated plates, wherein the corrugated plates are corrugated steel plates, and the impact energy can be better absorbed by the corrugated plates.
[0020] Since the rapping hammer directly hits the sealing plate 31, the weld between the sealing plate 31 and the sealing frame 32 may be cracked. In the present embodiment, a fixing seat 34 is welded and fixed on the side of the sealing plate 31 away from the sealing frame 32, wherein the fixing seat 34 may be rectangular; a hammer 35 is horizontally welded and fixed on the side of the fixing seat 34 away from the sealing plate 31, wherein the hammer 35 matches the hammer head of the elastic rapping hammer, and the fixing seat 34 is used to prevent the weld between the rapping beam 2 and the sealing plate 31 from cracking during rapping.
[0021] In this embodiment, reinforcing plates 36 are welded and fixed on both sides of the hammer 35. The reinforcing plates 36 are triangular in shape and are welded and fixed to the fixing seat 34 and the sealing plate 31. The hammer 35 is fixed by the two reinforcing plates 36 to keep the hammer 35 in a horizontal state and prevent the weld between the hammer 35 and the fixing seat 34 from cracking during the hammering process.
[0022] Furthermore, a fixing plate 37 is welded and fixed between the sealing frame 32 and the boiler body 1; the vibrating beam 2 passes through the fixing plate 37 and is welded and fixed to the fixing plate 37; the sealing cavity is composed of the sealing plate 31, the sealing frame 32, the vibrating beam 2 and the fixing plate 37, and the fixing plate 37 is used to facilitate thickening the thickness of the boiler body 1 around the vibrating beam 2, so as to better prevent cracking of the weld between the vibrating beam 2 and the boiler body 1.
[0023] The working principle of the utility model is as follows: an elastic rapping hammer is used to continuously hammer on the hammer 35, and the sealing plate 31, the sealing frame 32, the fixing material 33 and the rapping beam 2 are vibrated accordingly. The welding point between the rapping beam 2 and the boiler body 1 is completely sealed through the sealing plate 31, the sealing frame 32 and the fixing material 33, thereby increasing the stress area between the rapping beam 2 and the boiler body 1, reducing the local stress and preventing the weld from cracking.
Claims
1. A sealing device for a vibrating part of a waste heat boiler, characterized in that: It comprises a sealing plate (31) and a sealing frame (32), The sealing plate (31) is fixed to one end of the vibrating beam (2) away from the boiler body (1); the sealing frame (32) surrounds the vibrating beam (2) outside the boiler body (1), and one end of the sealing frame (32) is fixed to the sealing plate (31), and the other end is fixed to the boiler body (1); the sealing plate (31), the sealing frame (32), the vibrating beam (2) and the boiler body (1) form a sealing cavity; the sealing cavity is filled with fixing material (33); and the sealing frame (32) is composed of a corrugated plate.
2. The sealing device for the vibration part of a waste heat boiler according to claim 1, characterized in that: A fixing seat (34) is fixed to the side of the sealing plate (31) away from the sealing frame (32); and a hammer (35) is horizontally fixed to the side of the fixing seat (34) away from the sealing plate (31).
3. The sealing device for the vibration part of a waste heat boiler according to claim 2, characterized in that: Reinforcing plates (36) are respectively fixed on both sides of the hammer (35); the reinforcing plates (36) are triangular in shape and are fixed to the fixing seat (34) and the sealing plate (31).
4. The sealing device for the vibration part of a waste heat boiler according to claim 1, characterized in that: A fixing plate (37) is fixed between the sealing frame (32) and the boiler body (1); the vibration beam (2) passes through the fixing plate (37) and is fixed to the fixing plate (37) by welding; and the sealing chamber is composed of the sealing plate (31), the sealing frame (32), the vibration beam (2) and the fixing plate (37).
5. The sealing device for the vibration part of a waste heat boiler according to claim 1, characterized in that: The fixing material (33) is a casting material.