Online unblocking system for tuyere small sleeve of blast furnace

Abstract

The utility model belongs to the technical field of iron and steel smelting, and relates to a blast furnace tuyere small sleeve on-line unblocking system which comprises a tuyere small sleeve, a cooling water inlet short pipe and a cooling water outlet short pipe are arranged on the tuyere small sleeve, a water inlet hose is connected to the cooling water inlet short pipe, a three-way pipeline is connected to the cooling water outlet short pipe through a water outlet hose, and the three-way pipeline is connected to the tuyere small sleeve. One branch of the three-way pipeline is connected to the water return tank through a water return hose connected with a manual ball valve, a first high-pressure water outlet short pipe is arranged on the high-pressure water bag, and a first water pumping valve is installed on the first high-pressure water outlet short pipe; and the other branch of the three-way pipeline is connected to a first water pumping valve of the high-pressure water bag through a high-pressure water hose. The blast furnace tuyere small sleeve online unblocking system is scientific and reasonable in structural design, has the advantages of prolonging the service life of the small sleeve, ensuring the production schedule, reducing shutdown loss, being high in unblocking efficiency and easy to implement, and has relatively high innovativeness.

Description

Technical Field

[0001] This utility model belongs to the field of iron and steel smelting technology, and relates to a blast furnace unblocking device, particularly an online unblocking system for a blast furnace tuyeres. Background Technology

[0002] As a crucial cooling device in blast furnace production, the tuyere jacket's cooling water flow directly impacts the blast furnace's operational status. However, impurities can accumulate in the cooling water due to poor filtration or scale buildup. These impurities become trapped within the tuyere jacket's cooling chamber, affecting the water flow and consequently the cooling intensity at the jacket's ends. This prevents heat from being effectively dissipated, hindering cooling and increasing the risk of burn-through or meltdown. This not only shortens the jacket's lifespan but also disrupts production due to downtime for maintenance.

[0003] Currently, when the internal cavity of the tuyeres jacket becomes clogged, the conventional approach is to shut down the blast furnace, disconnect the outlet hose from the cooling water outlet short pipe on the jacket, discharge the return water directly, and then flush the impurities inside the jacket by adjusting the shut-off valve on the inlet branch pipe until the impurities are discharged. However, in actual production, when the blockage is severe, this method is insufficient to flush out the blockage impurities.

[0004] Therefore, in order to overcome the shortcomings of conventional treatment methods, it is necessary to propose an online unblocking system for blast furnace tuyeres. Summary of the Invention

[0005] The purpose of this utility model is to provide an online unblocking system for blast furnace tuyeres that has a scientific and reasonable structural design, extends the service life of the tuyeres, ensures production progress, reduces downtime losses, has high unblocking efficiency, and is easy to implement.

[0006] The technical problem solved by this utility model is achieved through the following technical solution:

[0007] A blast furnace tuyere sleeve online unblocking system includes a tuyere sleeve with a spirally wound cooling pipe inside its cooling chamber. Both ends of the cooling pipe extend from the front end face of the tuyere sleeve. One end of the cooling pipe forms a cooling water inlet short pipe, and the other end forms a cooling water outlet short pipe. The system further includes an inlet hose, an outlet hose, a tee pipe, a manual ball valve, a return hose, a return water tank, a high-pressure water tank, a first water-pressing valve, and a high-pressure water hose. The inlet hose is connected to the cooling water inlet short pipe, and the tee pipe is connected to the cooling water outlet short pipe via the outlet hose. One branch of the tee pipe is connected to the return water tank via the return hose connected to the manual ball valve. A first high-pressure water outlet short pipe is installed on the high-pressure water tank, and a first water-pressing valve is installed on the first high-pressure water outlet short pipe. The other branch of the tee pipe is connected to the first water-pressing valve of the high-pressure water tank via the high-pressure water hose.

[0008] Moreover, the inlet hose, outlet hose, return hose, and high-pressure water hose are all stainless steel hoses.

[0009] Furthermore, the diameter of the outlet hose is 1.5 inches, and the diameter of the return hose and the high-pressure water hose is 1 inch.

[0010] Furthermore, it also includes a second high-pressure water outlet short pipe and a second water valve. The second high-pressure water outlet short pipe is provided on the high-pressure water tank, and the second water valve is installed on the second high-pressure water outlet short pipe. The second water valve is used to connect to the return water hose.

[0011] Furthermore, it also includes a blockage-clearing auxiliary mechanism, which includes a mounting frame, a vibrating hammer, and a hydraulic cylinder. The mounting frame is installed on the cooling water inlet short pipe, and the vibrating hammer is hinged on the mounting frame. The hammer head of the vibrating hammer is placed on the air vent sleeve, and the vibrating hammer is driven to swing by the hydraulic cylinder installed on the mounting frame.

[0012] Furthermore, the mounting bracket includes an upper pipe clamp, a lower pipe clamp, a mounting beam, a rotating shaft, a hydraulic cylinder mounting slot, and a support beam. The upper pipe clamp is installed on the cooling water inlet short pipe. Horizontally arranged mounting beams extend outward from both sides of the upper pipe clamp. A rotating shaft is installed between the two mounting beams. The vibratory hammer is rotatably mounted on the rotating shaft. A hydraulic cylinder mounting slot is installed between the two mounting beams on the outer side of the rotating shaft. A support beam is inclinedly arranged at the lower part of the two mounting beams. The two support beams are connected to both sides of the lower pipe clamp. The lower pipe clamp is installed on the cooling water inlet short pipe.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] 1. This online unblocking system for blast furnace tuyeres, connected via a three-way pipe, solves the problem of temporary water interruption during forward flushing when the inlet hose is disconnected, thus eliminating melt damage caused by insufficient cooling at the front end of the tuyeres during water interruption. A furnace of high-pressure water is drawn from the emergency water tank via a three-way valve, ensuring continuous water supply even after the inlet hose is cut off, effectively preventing water interruption in the tuyeres.

[0015] High-pressure water is supplied by a high-pressure water tank for reverse backflushing, and the water supply pressure is adjusted by adjusting the opening of the first water ball valve of the emergency water tank, effectively handling impurities that block the bottleneck in the cavity.

[0016] 2. In order to further enhance the backwashing effect, the online unclogging system of the blast furnace tuyeres is equipped with a second high-pressure water outlet short pipe on the emergency water tank. A return water hose is connected to the second high-pressure water outlet short pipe to achieve the purpose of dual-path high-pressure water backwashing.

[0017] 3. In order to improve the efficiency of removing debris, this utility model also sets up a debris removal auxiliary mechanism at the drainage end of the backflushing operation, namely the short pipe of the cooling water inlet. By vibrating the tuyeres with a vibrating hammer, the debris is loosened quickly. Combined with the action of high-pressure water flow, the debris is quickly removed.

[0018] 4. The structure of this utility model is scientifically and rationally designed, and has the advantages of extending the service life of the tuyere sleeve, ensuring production progress, reducing downtime losses, high unblocking efficiency, and easy implementation. It is a highly innovative online unblocking system for blast furnace tuyere sleeves. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the unblocking auxiliary mechanism of this utility model installed on the air vent sleeve;

[0021] Figure 3 This is a schematic diagram of the mounting frame in the blockage clearing auxiliary mechanism of this utility model.

[0022] Figure Labels

[0023] 1-High-pressure water tank, 2-First water pump valve, 3-Second water pump valve, 4-High-pressure water hose, 5-T-pipe, 6-Outlet hose, 7-Cooling water outlet short pipe, 8-Air vent sleeve, 9-Cooling water inlet short pipe, 10-Manual ball valve, 11-Return hose, 12-Return tank, 13-Inlet hose, 14-Upper pipe clamp, 15-Vibrating hammer, 16-Lower pipe clamp, 17-Support beam, 18-Hydraulic cylinder, 19-Mounting beam, 20-Rotating shaft, 21-Hydraulic cylinder mounting slot. Detailed Implementation

[0024] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0025] A blast furnace tuyere sleeve online unblocking system includes a tuyere sleeve 8. A spirally wound cooling pipe is installed within the cooling chamber of the tuyere sleeve, with both ends extending from the front end face of the tuyere sleeve. One end of the cooling pipe forms a cooling water inlet short pipe 9, and the other end forms a cooling water outlet short pipe 7. Its innovation lies in the following: it also includes an inlet hose 13, an outlet hose 6, a tee pipe 5, a manual ball valve 10, a return hose 11, a return water tank 12, a high-pressure water tank 1, a first water-pressing valve 2, and a high-pressure water hose 4. The inlet hose is connected to the cooling water inlet short pipe, and the tee pipe is connected to the cooling water outlet short pipe via the outlet hose. One branch of the tee pipe is connected to the return water tank via the return hose connected to the manual ball valve. A first high-pressure water outlet short pipe is installed on the high-pressure water tank, and a first water-pressing valve is installed on the first high-pressure water outlet short pipe. The other branch of the tee pipe is connected to the first water-pressing valve of the high-pressure water tank via the high-pressure water hose.

[0026] The inlet hose, outlet hose, return hose, and high-pressure water hose are all stainless steel hoses, and each stainless steel hose is equipped with a quick-connect fitting at its end to achieve quick installation and disassembly of the entire system.

[0027] It also includes a second high-pressure water outlet short pipe and a second water valve 3. The second high-pressure water outlet short pipe is provided on the high-pressure water tank, and the second water valve is installed on the second high-pressure water outlet short pipe. The second water valve is used to connect to the return water hose.

[0028] It also includes a blockage clearing auxiliary mechanism, which includes a mounting frame, a vibrating hammer 15 and a hydraulic cylinder 18. The mounting frame is installed on the cooling water inlet short pipe, and the vibrating hammer is hinged on the mounting frame. The hammer head of the vibrating hammer is placed on the air vent sleeve. The vibrating hammer is driven to swing by the hydraulic cylinder installed on the mounting frame.

[0029] The mounting bracket includes an upper pipe clamp 14, a lower pipe clamp 16, a mounting beam 19, a rotating shaft 20, a hydraulic cylinder mounting groove 21, and a support beam 17. The upper pipe clamp is installed on the cooling water inlet short pipe. Horizontally arranged mounting beams extend outward from both sides of the upper pipe clamp. A rotating shaft is installed between the two mounting beams. The vibratory hammer is rotatably mounted on the rotating shaft. A hydraulic cylinder mounting groove is installed between the two mounting beams on the outer side of the rotating shaft. A support beam is inclinedly arranged at the lower part of the two mounting beams. The two support beams are connected to both sides of the lower pipe clamp. The lower pipe clamp is installed on the cooling water inlet short pipe.

[0030] Working principle:

[0031] Prepare a three-way pipe. The three branches of the three-way pipe are connected to the outlet hose, return hose, and high-pressure water hose respectively through quick-connect couplings. The outlet hose is a hose with a diameter of 1.5 inches, and the return hose and high-pressure water hose are hoses with a diameter of 1 inch.

[0032] The high-pressure water hose is connected to the first water valve on the high-pressure water tank. During normal operation, the first water valve is closed, and the return water hose is connected to the return water tank.

[0033] When blockage occurs inside the air vent sleeve, remove the inlet hose, open the first water valve, and control the manual ball valve of the return hose to flush the cooling pipes inside the air vent sleeve with high-pressure water backwashing.

[0034] Observe the water flow rate at the inlet short pipe and the temperature at the air vent sleeve. If the flushing effect is not good, connect the return water hose connected to the return water tank to the second water valve of the high-pressure water tank, open the manual ball valve and the second water valve, and achieve the sludge removal work through the dual-path high-pressure water backflushing.

[0035] During the backwashing process, the pressure in the pipeline is regulated by manually controlling the opening of the first and second water valves, and the change in water pressure helps to remove impurities.

[0036] While backwashing, the auxiliary mechanism for clearing blockages can be used to vibrate the small sleeve of the air vent, accelerating the loosening of the blocked debris and improving the efficiency of dredging.

[0037] An increase in the drainage pressure and water volume of the inlet hose indicates that impurities have been discharged.

[0038] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An online unclogging system for a blast furnace tuyere sleeve, comprising a tuyere sleeve, wherein a spirally wound cooling pipe is provided within the cooling chamber of the tuyere sleeve, with both ends of the cooling pipe extending from the front end face of the tuyere sleeve, one end of the cooling pipe forming a short cooling water inlet pipe, and the other end forming a short cooling water outlet pipe, characterized in that: It also includes an inlet hose, an outlet hose, a tee pipe, a manual ball valve, a return hose, a return water tank, a high-pressure water tank, a first water-pressing valve, and a high-pressure water hose. The inlet hose is connected to the cooling water inlet short pipe, and the tee pipe is connected to the cooling water outlet short pipe via the outlet hose. One branch of the tee pipe is connected to the return water tank via the return hose connected to the manual ball valve. A first high-pressure outlet short pipe is provided on the high-pressure water tank, and a first water-pressing valve is installed on the first high-pressure outlet short pipe. The other branch of the tee pipe is connected to the first water-pressing valve of the high-pressure water tank via the high-pressure water hose.

2. The online unblocking system for a blast furnace tuyeres according to claim 1, characterized in that: The inlet hose, outlet hose, return hose, and high-pressure water hose are all stainless steel hoses.

3. The online unblocking system for a blast furnace tuyeres according to claim 1, characterized in that: The diameter of the outlet hose is 1.5 inches, and the diameter of the return hose and the high-pressure water hose is 1 inch.

4. The online unblocking system for a blast furnace tuyeres according to claim 1, characterized in that: It also includes a second high-pressure water outlet short pipe and a second water valve. The second high-pressure water outlet short pipe is provided on the high-pressure water tank, and the second water valve is installed on the second high-pressure water outlet short pipe. The second water valve is used to connect to the return water hose.

5. The online unblocking system for a blast furnace tuyeres according to claim 1, characterized in that: It also includes a blockage-clearing auxiliary mechanism, which includes a mounting frame, a vibrating hammer, and a hydraulic cylinder. The mounting frame is installed on the cooling water inlet short pipe, and the vibrating hammer is hinged on the mounting frame. The hammer head of the vibrating hammer is placed on the air vent sleeve, and the vibrating hammer is driven to swing by the hydraulic cylinder installed on the mounting frame.

6. The online unblocking system for a blast furnace tuyeres according to claim 5, characterized in that: The mounting bracket includes an upper pipe clamp, a lower pipe clamp, a mounting beam, a rotating shaft, a hydraulic cylinder mounting slot, and a support beam. The upper pipe clamp is installed on the cooling water inlet short pipe. Horizontally arranged mounting beams extend outward from both sides of the upper pipe clamp. A rotating shaft is installed between the two mounting beams. The vibratory hammer is rotatably mounted on the rotating shaft. A hydraulic cylinder mounting slot is installed between the two mounting beams on the outer side of the rotating shaft. A support beam is inclinedly arranged at the lower part of the two mounting beams. The two support beams are connected to both sides of the lower pipe clamp. The lower pipe clamp is installed on the cooling water inlet short pipe.

Images