Method for replacing a cyclone well slagging conduit

Abstract

The application discloses a kind of cyclone well slag flushing pipeline replacement method, to solve the problem of high safety risk of traditional replacement mode, long construction period.The method includes five steps of construction preparation, removing old pipe, new pipe threading, pipeline lowering, fixing and connecting.Through the coordinated operation of chain hoist, steel wire rope and overhead crane, it is not necessary to set up scaffold, and the operation of construction personnel in dangerous environment is avoided.The new pipe threading adopts thin tube guided steel wire rope, and the pipeline lowering and installation are precisely controlled.The quality is ensured after welding through nondestructive testing.The application has high safety and efficiency, is suitable for various cyclone wells, can reduce production interruption, and has strong practicality.

Description

Technical Field

[0001] This invention belongs to the field of vortex well construction technology, specifically relating to a method for replacing a slag flushing pipe in a vortex well. Background Technology

[0002] In industrial production, slag flushing pipes in cyclone wells play a crucial role in slag removal. Due to long-term erosion and wear from internal slag, these pipes require periodic replacement. Traditional replacement methods typically involve erecting scaffolding between the inner and outer walls of the cyclone well. Workers then transport multiple sections of the flushing pipe sequentially from the outside of the well and weld them together inside. However, water often accumulates at the bottom of the cyclone well, increasing the difficulty of the work and posing significant safety risks. Furthermore, this method is cumbersome, time-consuming, and can lead to prolonged production interruptions, resulting in substantial economic losses for the company. Therefore, a safe, efficient method for replacing slag flushing pipes in cyclone wells that minimizes production disruption is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a method for replacing the slag flushing pipe of a cyclone well, so as to solve the problems of high safety risks, long construction period and significant impact on normal production in the replacement process of the slag flushing pipe of a cyclone well in the prior art.

[0004] The technical solution adopted by the present invention to solve the aforementioned problem is as follows: A method for replacing the slag flushing pipe in a vortex well is carried out according to the following steps: S1. Construction preparation: Determine the location and specifications of the slag flushing pipe to be replaced in the vortex well, and select a new slag flushing pipe of the corresponding specifications; prepare hand chain hoists, wire ropes, overhead cranes and other construction tools, and conduct a comprehensive inspection and debugging of these devices; S2. Remove old pipes: Use cutting equipment to cut and remove the old pipes; S3. New Pipe Insertion: Drill holes at both ends of the new slag flushing pipe; select a thin pipe, pass it through the pre-drilled hole from the outside of the vortex well to the inside, insert a steel wire rope through the vortex well opening, and tie one end of the steel wire rope to the thin pipe. Pull the thin pipe out from the outside of the vortex well, and drive the steel wire rope through the vortex well wall to the outside; after the steel wire rope passes through the well wall, remove the thin pipe and tie it to the pre-drilled hole at one end of the new slag flushing pipe. Connect the other end of the steel wire rope to the overhead crane hook, and connect the other end of the slag flushing pipe to the hook of the hand chain hoist. S4. Lowering the slag flushing pipe: Using a crane and a hand-operated hoist, the slag flushing pipe is slowly lowered to the target position. During the descent, the lowering of the slag flushing pipe is closely observed to ensure that it does not collide with the vortex well wall or other obstacles. At the same time, the lowering speed is controlled to prevent the slag flushing pipe from going out of control. S5. Slag flushing pipe fixing and connection: After the slag flushing pipe slides down to the target position, the slag flushing pipe is welded to the cyclone well sleeve. Before welding, the welding area is cleaned and ground to remove surface impurities. After welding, the weld is visually inspected to ensure welding quality.

[0005] Furthermore, in the construction preparation steps, the lifting capacity, running track, and braking system of the overhead crane are thoroughly inspected and tested. The chain of the hand chain hoist is checked for signs of wear or breakage, and its braking performance is tested to ensure effectiveness. The wire rope is checked for broken strands or corrosion, and its diameter is measured to ensure it meets safety standards.

[0006] Furthermore, in the step of removing the old pipe, the cutting location is selected at the connection point of the slag flushing pipe or a straight section that is easy to operate.

[0007] Furthermore, in the new pipe threading step, protective measures are set at the contact point between the vortex well wall and the wire rope to prevent excessive friction between the wire rope and the well wall.

[0008] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art: Construction using the method described in this invention significantly improves safety. The coordinated operation of overhead cranes, hand-operated hoists, and wire ropes avoids prolonged work by personnel in the hazardous environment of water accumulation at the bottom of the vortex well, reducing the risks of working at heights and underwater, and lowering the probability of collisions and falls. Construction efficiency is greatly improved, eliminating the need for traditional scaffolding erection. By cutting and removing old pipes and threading wire ropes through thinner pipes to install new ones, the construction cycle is shortened, minimizing disruption to normal production and saving labor and time costs. It boasts strong versatility and reliability; using conventional construction equipment, it is easy to operate and suitable for vortex wells of different sizes and shapes. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of wire rope traction in an embodiment of the present invention; Figure 2 This is a schematic diagram of the slag flushing pipe and the steel wire rope binding in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the installation effect of the slag flushing pipeline according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation of the slag flushing pipeline according to an embodiment of the present invention; The following are marked in the diagram: 1. Cyclone well sleeve; 2. Wire rope; 3. Thin pipe; 4. Slag flushing pipe; 6. Hand chain hoist; 5. Overhead crane. Detailed Implementation

[0010] The present invention will be further described below with reference to embodiments, which are intended only to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0011] Referring to Figures 1-4, a method for replacing the slag flushing pipe in a vortex well is carried out according to the following steps: S1. Construction preparation: Determine the location and specifications of the slag flushing pipe 4 to be replaced in the vortex well, and select a new slag flushing pipe 4 of the corresponding specifications; prepare hand chain hoists 6, wire ropes 2, overhead cranes 5 and other construction tools, and conduct a comprehensive inspection and debugging of these devices; S2. Remove the old pipe: Use cutting equipment to cut and remove the old slag flushing pipe 4; S3. New Pipe Insertion: Drill holes at both ends of the new slag flushing pipe 4; select a thin pipe 3, pass the thin pipe 3 through the reserved hole from the outside of the vortex well into the inside, insert the steel wire rope 2 through the vortex well opening, and tie one end of the steel wire rope 2 to the thin pipe 3. Pull out the thin pipe 3 from the outside of the vortex well, and drive the steel wire rope 2 through the vortex well sleeve 1 to the outside; after the steel wire rope 2 passes through the well wall, remove the thin pipe 3 and tie it to the pre-drilled hole at one end of the new slag flushing pipe 4. Connect the other end of the steel wire rope 2 to the hook of the overhead crane 5, and connect the other end of the slag flushing pipe 4 to the hook of the hand chain hoist 6; S4. Lowering the slag flushing pipe: Using the overhead crane 5 and the hand-operated hoist 6, the slag flushing pipe 4 is slowly lowered to the target position. During the descent, the lowering of the slag flushing pipe 4 is closely observed to ensure that it does not collide with the cyclone well sleeve 1 or other obstacles. At the same time, the lowering speed is controlled to prevent the slag flushing pipe 4 from going out of control. S5. Slag flushing pipe fixing and connection: After the slag flushing pipe 4 slides down to the target position, the slag flushing pipe 4 is welded to the vortex well sleeve 1. Before welding, the welding parts are cleaned and ground to remove surface impurities. After welding, the weld is visually inspected to ensure welding quality. In the construction preparation steps, the lifting capacity, running track, and braking system of the overhead crane 5 are thoroughly inspected and tested. The chain of the hand chain hoist 6 is checked for signs of wear or breakage, and its braking performance is tested to ensure effectiveness. The wire rope 2 is checked for broken wires or corrosion, and its diameter is measured to ensure it meets safety standards. In the step of removing the old pipe, the cutting location is selected at the connection point of the slag flushing pipe 4 or a straight section that is easy to operate. In the new pipe threading step, protective measures are set at the contact point between the vortex well wall and the wire rope 2 to prevent excessive friction between the wire rope 2 and the vortex well wall. Construction using the method described in this invention significantly improves safety. The coordinated operation of overhead cranes, hand-operated hoists, and wire ropes avoids prolonged work by personnel in the hazardous environment of water accumulation at the bottom of the vortex well, reducing the risks of working at heights and underwater, and lowering the probability of collisions and falls. Construction efficiency is greatly improved, eliminating the need for traditional scaffolding erection. By cutting and removing old pipes and threading wire ropes through thinner pipes to install new ones, the construction cycle is shortened, minimizing disruption to normal production and saving labor and time costs. It boasts strong versatility and reliability; using conventional construction equipment, it is easy to operate and suitable for vortex wells of different sizes and shapes.

[0012] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A method for replacing a slag flushing pipe in a vortex well, characterized in that, Follow these steps: S1. Construction preparation: Determine the location and specifications of the slag flushing pipe to be replaced in the vortex well, and select a new slag flushing pipe of the corresponding specifications; prepare hand chain hoists, wire ropes, overhead cranes and other construction tools, and conduct a comprehensive inspection and debugging of these devices; S2. Remove old pipes: Use cutting equipment to cut and remove the old pipes; S3. New Pipe Insertion: Drill holes at both ends of the new slag flushing pipe; select a thin pipe, pass it through the pre-drilled hole from the outside of the vortex well to the inside, insert a steel wire rope through the vortex well opening, and tie one end of the steel wire rope to the thin pipe. Pull the thin pipe out from the outside of the vortex well, driving the steel wire rope through the vortex well wall to the outside; after the steel wire rope passes through the well wall, remove the thin pipe and tie it to the pre-drilled hole at one end of the new slag flushing pipe, and connect the other end of the steel wire rope to the overhead crane hook; connect the other end of the slag flushing pipe to the hook of the hand chain hoist. S4. Lowering the slag flushing pipe: Using a crane and a hand-operated hoist, the slag flushing pipe is slowly lowered to the target position. During the descent, the lowering of the slag flushing pipe is closely observed to ensure that it does not collide with the vortex well wall or other obstacles. At the same time, the lowering speed is controlled to prevent the slag flushing pipe from going out of control. S5. Slag flushing pipe fixing and connection: After the slag flushing pipe slides down to the target position, the slag flushing pipe is welded to the cyclone well sleeve. Before welding, the welding area is cleaned and ground to remove surface impurities. After welding, the weld is visually inspected to ensure welding quality.

2. The method for replacing the slag flushing pipe in a vortex well according to claim 1, characterized in that: In the construction preparation steps, the lifting capacity, running track, and braking system of the overhead crane are thoroughly inspected and tested. The chain of the hand chain hoist is checked for signs of wear or breakage, and its braking performance is tested to ensure effectiveness. The wire rope is checked for broken strands or corrosion, and its diameter is measured to ensure it meets safety standards.

3. The method for replacing the slag flushing pipe in a vortex well according to claim 1, characterized in that: In the step of removing the old pipe, the cutting location is selected at the connection of the slag flushing pipe or a straight section that is easy to operate.

4. The method for replacing the slag flushing pipe in a vortex well according to claim 1, characterized in that: In the new pipe threading step, protective measures are set at the contact point between the vortex well wall and the wire rope to prevent excessive friction between the wire rope and the well wall.

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