Flue operating door mechanism for converter waste heat boiler

Abstract

The utility model discloses a flue operating mouth mechanism of converter waste heat boiler, include: flue body, operating pipe still include: panel, the middle part of panel is equipped with the welding port, and operating pipe is worn in the welding port, and operating pipe is welded fixed with panel, and the back of panel is welded with a circle sealing pressure strip, and the periphery of flue body lateral wall opening is welded with two circles annular baffle, and the sealed recess is formed between two circles annular baffle, and the sealing gasket is laid in sealed recess, and the lateral wall of flue body outside sealed recess is welded with a plurality of cylinders, and the pressing plate and press structure are sleeved on each cylinder, when operating pipe inserts into flue body lateral wall opening, the sealing pressure strip on panel can just be clamped into sealed recess, and each pressing plate can be pressed on the side of panel under the press of respective press structure. The flue operating mouth mechanism of converter waste heat boiler can realize quick dismounting, and the processing is simple.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boilers, specifically to the flue gas operating port mechanism of a converter waste heat boiler. Background Technology

[0002] A converter waste heat boiler is a flue-type waste heat boiler primarily used to recover heat from the coal gas, high-temperature flue gas, and dust generated during converter steelmaking in steel plants. The converter waste heat boiler is directly linked to the converter steelmaking process, participating directly in production as part of the steel plant's steelmaking technology. A converter waste heat boiler includes: various sections of flue gas ducts, steam drum, and piping, etc.

[0003] The flue at the furnace mouth is a major component of the converter waste heat boiler. The flue at the furnace mouth is generally equipped with multiple operating ports, including: oxygen lance ports required for oxygen blowing during converter steelmaking, charging ports required for feeding, and auxiliary lance ports required for sampling.

[0004] Currently, the most common connection methods between the control port and the flue body are direct welding, bolt connection, or pin connection.

[0005] Direct welding involves welding the control port directly to the flue section at the furnace opening. This direct welding makes replacement difficult, as the control port cannot be disassembled and must be cut off, a time-consuming and labor-intensive method.

[0006] Bolted and pin connections are also common, facilitating replacement and disassembly. However, they require precise hole preparation and are prone to installation deviations, leading to misalignment of the holes. This necessitates on-site repair, making assembly more difficult. Furthermore, the holes may allow fumes to leak out during equipment operation. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a flue gas operation port mechanism for a converter waste heat boiler that can be quickly disassembled and assembled and is easy to process.

[0008] To solve the above problems, the technical solution adopted by this utility model is as follows: a flue gas operation port mechanism for a converter waste heat boiler, comprising: a flue gas body, and an operation pipe for obliquely inserting into an opening in the side wall of the flue gas body. The mechanism is characterized by further comprising: a panel for fixing the operation pipe, wherein a welding joint is provided in the middle of the panel, the operation pipe is obliquely inserted into the welding joint, and the operation pipe is welded and fixed to the panel; a sealing strip is welded around the operation pipe on the back of the panel; and two annular retaining edges arranged side-by-side are welded around the opening in the side wall of the flue gas body, forming a tight seal between the two annular retaining edges. The sealing groove contains a sealing gasket. Several cylinders arranged around the sealing groove are welded to the side wall of the flue body outside the sealing groove. Each cylinder is fitted with a pressure plate and a pressing structure for pressing the pressure plate. When the operating tube is inserted into the opening of the side wall of the flue body, the sealing strip on the panel can be inserted into the sealing groove. Each pressure plate can be pressed against the side of the panel under the pressure of its respective pressing structure, so that the panel can be fixed to the flue body. The sealing strip can be tightly sealed with the sealing gasket. At this time, the operating tube can be inserted into the flue body through the panel and sealed.

[0009] Furthermore, in the aforementioned flue gas operating port mechanism of the converter waste heat boiler, the pressing structure is a nut threaded onto the top of the cylinder.

[0010] Furthermore, in the aforementioned flue gas operating port mechanism of the converter waste heat boiler, the pressure plate is an L-shaped plate, the horizontal plate of the pressure plate is fitted onto the cylinder, and the vertical plate of the pressure plate is used to limit the pressing height of the pressure plate.

[0011] Furthermore, in the aforementioned flue gasket operating port mechanism of the converter waste heat boiler, the sealing gasket is a ceramic fiber rope.

[0012] Furthermore, in the aforementioned flue gas operating port mechanism of the converter waste heat boiler, the panel, sealing groove, and sealing strip are all elliptical in shape.

[0013] Furthermore, in the aforementioned flue gas operating port mechanism of the converter waste heat boiler, the sealing strip and the annular baffle are made of square steel or round steel.

[0014] The advantages of this utility model are: the flue gas operation port mechanism of the converter waste heat boiler is simple and easy to process, and can realize quick installation and disassembly between the operation port and the flue body. It is also tightly fitted and firmly installed, and no holes are required, which saves costs and avoids the hidden danger of flue gas leakage from the opening during on-site operation. The replacement of the operation port is also more convenient and saves on-site installation time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the flue gas operating port mechanism of the aforementioned converter waste heat boiler.

[0016] Figure 2 for Figure 1 A schematic diagram of the left-side view structure.

[0017] Figure 3 for Figure 1 A magnified structural diagram of point A in the middle. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, the flue gas operating port mechanism of the converter waste heat boiler includes: a flue body 1, an operating pipe 2 for obliquely inserting into the side wall opening of the flue body 1, and a panel 3 for fixing the operating pipe 2. The panel 3 has a welding joint in the middle, and the operating pipe 2 is obliquely inserted into the welding joint and welded to the panel 3. A sealing strip 4 is welded around the operating pipe 2 on the back of the panel 3. Two annular retaining edges 5 arranged side-by-side are welded around the side wall opening of the flue body 1, forming a sealing groove between the two annular retaining edges 5. A sealing gasket is placed in the sealing groove. 6. Several cylinders 7 are welded to the side wall of the flue body 1 outside the sealing groove, arranged around the sealing groove. Each cylinder 7 is fitted with a pressure plate 8 and a pressing structure for pressing the pressure plate 8. When the operating tube 2 is inserted into the opening of the side wall of the flue body 1, the sealing strip 4 on the panel 3 can be inserted into the sealing groove. Each pressure plate 8 can be pressed against the side of the panel 3 under the pressing of its respective pressing structure, so that the panel 3 can be fixed on the flue body 1. The sealing strip 4 can be tightly attached to the sealing gasket 6 for sealing. At this time, the operating tube 2 can be sealed and inserted into the flue body 1 through the panel 3.

[0020] In this embodiment, the pressing structure is a nut 9 threadedly connected to the top of the cylinder 7. The pressure plate 8 is an L-shaped plate, with its horizontal plate fitted onto the cylinder 7 and its vertical plate used to limit the pressing height of the pressure plate 8. The sealing gasket 6 is a ceramic fiber rope. The panel 3, sealing groove, and sealing strip 4 are all elliptical. The sealing strip 4 and the annular retaining edge 5 are made of square or round steel.

[0021] The pressure plate 8 is fitted onto the cylinder 7, and the nut 9 is tightened temporarily. It does not need to be tightened, and the pressure plate 8 can be rotated appropriately. When installing the equipment, first insert the ceramic fiber rope for sealing into the sealing groove, and then insert the operating tube 2 with the panel 3 into the opening on the side wall of the flue body 1. After adjusting and aligning, the sealing strip 4 on the panel 3 presses down the ceramic fiber rope in the sealing groove. Then rotate the pressure plate 8 to the appropriate position on the panel 3, and finally tighten the nut 9. After all the pressure plates 8 are adjusted and tightened, the operating tube 2 can be sealed and inserted into the flue body 1 through the panel 3.

Claims

1. The flue gas operating port mechanism of the converter waste heat boiler includes: The flue body and the operating pipe for oblique insertion into the side wall opening of the flue body are characterized by: further comprising: a panel for fixing the operating pipe, the panel having a welding joint in the center, the operating pipe being obliquely inserted into the welding joint and welded to the panel; a sealing strip arranged around the operating pipe being welded on the back of the panel; and two annular retaining edges arranged side by side around the side wall opening of the flue body being welded, forming a sealing groove between the two annular retaining edges, in which a sealing gasket is laid. Several cylinders are welded to the side wall of the flue body outside the groove, arranged around the sealing groove. Each cylinder is fitted with a pressure plate and a pressing structure for pressing the pressure plate. When the operating tube is inserted into the opening of the side wall of the flue body, the sealing strip on the panel can be inserted into the sealing groove. Each pressure plate can be pressed against the side of the panel under the pressing of its respective pressing structure, so that the panel can be fixed to the flue body. The sealing strip can be tightly attached to the sealing gasket for sealing. At this time, the operating tube can be inserted into the flue body through the panel and sealed.

2. The flue gas operating port mechanism of the converter waste heat boiler according to claim 1, characterized in that: The pressing mechanism is a nut that is threaded onto the top of a cylinder.

3. The flue gas operating port mechanism of the converter waste heat boiler according to claim 1, characterized in that: The pressure plate is an L-shaped plate, with the horizontal plate of the pressure plate fitted onto the cylinder, and the vertical plate of the pressure plate used to limit the pressing height of the pressure plate.

4. The flue gas operating port mechanism of the converter waste heat boiler according to claim 1, characterized in that: The sealing gasket is made of ceramic fiber rope.

5. The flue gas operating port mechanism of the converter waste heat boiler according to claim 1, characterized in that: The panel, sealing groove, and sealing strip are all oval in shape.

6. The flue gas operating port mechanism of the converter waste heat boiler according to claim 1, characterized in that: The sealing strip and the annular retaining edge are made of square steel or round steel.

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