A device for replacing coke oven riser pipes

Abstract

This application discloses a device for replacing coke oven riser pipes, comprising: a bridge-type support frame fixed to a riser pipe platform support; the bridge-type support frame includes a horizontally arranged crossbeam and two vertically arranged hangers, wherein the crossbeam has two first lifting lugs symmetrically arranged along the vertical line of the crossbeam; two second lifting lugs respectively fixed to both sides of the upper pipe section of the riser pipe; two third lifting lugs respectively fixed to both sides of the lower pipe section of the riser pipe; and two chain hoists, respectively suspended from the two first lifting lugs, and used to connect the second or third lifting lugs to connect and replace the upper or lower pipe section. When replacing the riser pipe using the device provided in this application, the two chain hoists connect the first lifting lugs to the second or third lifting lugs, and the pipe section can be easily raised or lowered by pulling the chain hoists to complete the dismantling and installation operations. This solution is flexible in operation, reduces reliance on large cranes, and lowers safety risks and costs.

Description

Technical Field

[0001] This application generally relates to the field of coking production equipment maintenance technology. More specifically, this application relates to a device for replacing the coke oven riser pipe. Background Technology

[0002] In the coking process, the coke oven riser pipe is a key piece of equipment for gas extraction. Its pipe sections operate under high temperature and corrosive conditions for extended periods, making them prone to wear and aging. Regular replacement is necessary to ensure stable operation and production safety of the coke oven. Therefore, efficient and safe replacement of riser pipe sections is a crucial aspect of equipment maintenance in coking enterprises.

[0003] Currently, the common technical solution in the industry for replacing coke oven riser pipe sections is to rent large cranes of 70T or 130T capacity, and then park the cranes on the side of the coke oven machine or coke side for lifting operations. In practice, the lifting capacity of the cranes is used to dismantle the old pipe sections and install the new ones to complete the replacement and maintenance of the riser pipe sections.

[0004] However, existing technical solutions suffer from high safety risks and high maintenance costs in practical applications. Specifically, the operating radius of a crane typically contains important equipment such as gas pipelines, ammonia pipelines, and sliding contact lines. During hoisting, operational errors or equipment interference can easily lead to safety accidents such as collisions and leaks. In addition, the rental cost of large cranes is high, and long-term use will significantly increase the company's equipment maintenance costs.

[0005] In view of this, there is an urgent need to provide a device solution specifically for replacing the coke oven riser pipe, so as to meet the equipment requirements of being more convenient, more efficient and more economical, thereby effectively solving the problems of safety hazards, low efficiency and high cost in the existing technology, and ensuring the stability and economy of coking production. Utility Model Content

[0006] In order to at least solve the technical problems mentioned above, this application proposes a more convenient and safer device for replacing the coke oven riser pipe.

[0007] This application provides a device for replacing a coke oven riser pipe, comprising: a bridge-type support frame fixed to a riser pipe platform support; the bridge-type support frame including a horizontally arranged crossbeam and two vertically arranged hangers, wherein the crossbeam has two first lifting lugs symmetrically arranged along the vertical line of the crossbeam; two second lifting lugs respectively fixed to both sides of the upper pipe section of the riser pipe; two third lifting lugs respectively fixed to both sides of the lower pipe section of the riser pipe; and two chain hoists respectively suspended on the two first lifting lugs and used to connect the second lifting lugs or the third lifting lugs to connect and replace the upper pipe section or the lower pipe section.

[0008] In some embodiments, two mounting members are also included, each detachably mounted to the bottom of the hanger.

[0009] In some embodiments, the two mounting components are detachably connected to the riser platform support by bolts.

[0010] In some embodiments, the bridge support frame is a U-shaped frame welded from channel steel, and the height of the hanger is 2.5-3 meters.

[0011] In some embodiments, a bridge pipe is provided above the upper pipe section, and a chain hoist is hung on the bridge pipe.

[0012] In some embodiments, the hanger includes a telescopic structure and a sleeve structure, and both the telescopic structure and the sleeve structure have a plurality of through holes spaced apart along the height direction. The height of the hanger is adjusted by connecting different through holes with locking members.

[0013] In some embodiments, the hanger is provided with reinforcing ribs.

[0014] In some embodiments, the crossbeam has a plurality of spaced-apart mounting holes, and the hanger adjusts its position on the crossbeam by connecting to different mounting holes.

[0015] With the coke oven riser pipe replacement device provided above, in this embodiment of the application, when replacing the riser pipe using the device provided by this application, the operator moves the pipe section by operating the chain hoist, which is convenient. At the same time, this device avoids the need for large crane rental, complex positioning, and long-term production downtime, effectively shortening the replacement time and reducing maintenance costs. Attached Figure Description

[0016] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein:

[0017] Figure 1 An apparatus for replacing the coke oven riser pipe according to an embodiment of this application is shown;

[0018] Figure 2 The illustration shows a device for replacing the coke oven riser pipe according to an embodiment of this application, as well as a structural schematic diagram of the riser pipe.

[0019] In the diagram: 100, Device for replacing the coke oven riser pipe; 200, Riser pipe;

[0020] 101. Crossbeam; 102. Hanger; 103. First lifting lug; 104. Mounting component; 105. Chain hoist;

[0021] 201. Upper pipe section; 202. Second lifting lug; 203. Lower pipe section; 204. Third lifting lug; 205. Bridge pipe; 206. Water seal groove; 207. Furnace top; 208. Base. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0024] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0025] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0026] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 2As shown, in some embodiments, this application provides a device 100 for replacing coke oven riser pipes, comprising: a bridge-type support frame fixed to a riser pipe platform support; the bridge-type support frame including a horizontally arranged crossbeam 101 and two vertically arranged hangers 102, wherein the crossbeam 101 has two first lifting lugs 103 symmetrically arranged along the perpendicular bisector of the crossbeam 101; two second lifting lugs 202, respectively fixedly arranged on both sides of the upper pipe section 201 of the riser pipe 200; two third lifting lugs 204, respectively fixedly arranged on both sides of the lower pipe section 203 of the riser pipe 200; and two chain hoists 105, respectively suspended on the two first lifting lugs 103, and used to connect the second lifting lugs 202 or the third lifting lugs 204 to connect and replace the upper pipe section 201 or the lower pipe section 203.

[0028] The device for replacing coke oven riser pipes provided in this application includes a bridge support frame, two second lifting lugs 202, two third lifting lugs 204, and two chain hoists 105. Specifically, the bridge support frame is the core of the entire device, and it is detachably fixed to the riser pipe platform support. The bridge support frame includes a horizontally arranged crossbeam 101 and two vertically arranged hangers 102, wherein the two hangers 102 are symmetrically arranged on the crossbeam 101. In addition, the crossbeam 101 has two first lifting lugs 103 symmetrically arranged along the vertical line, and the first lifting lugs 103 are located between the two hangers 102.

[0029] Those skilled in the art will understand that the riser pipe 200 includes an upper pipe section 201 and a lower pipe section 203 connected to each other. A furnace top 207 and a base 208 are sequentially arranged below the lower pipe section 203, and a bridge pipe 205 and a water seal trough 206 are sequentially connected above the upper pipe section 201. Two second lifting lugs 202 are fixedly arranged on the side wall of the upper pipe section 201, and two third lifting lugs 204 are fixedly arranged on the side wall of the lower pipe section 203. The function of the second lifting lugs 202 and the third lifting lugs 204 is to provide connection points for the chain hoist 105, enabling precise control of the pipe sections.

[0030] When replacing pipe sections, two chain hoists 105 are suspended on the two first lifting lugs 103 on the crossbeam 101, and connected to the corresponding second lifting lug 202 or third lifting lug 204. By pulling the chain hoists 105, the pipe section can be easily raised or lowered to complete the dismantling and installation operations, improve operational flexibility, reduce reliance on large cranes, and reduce safety risks and costs.

[0031] The device for replacing coke oven riser pipes provided in this application effectively reduces operational risks and ensures personnel safety during use. When replacing 200mm riser pipe sections using this device, operators do not need to directly contact the pipe sections, thus avoiding potential dangers caused by direct operation. Furthermore, compared to traditional crane replacement methods, this device reduces reliance on expensive crane rentals, saving companies significant resources. Therefore, the device in this application not only improves operational safety but also increases replacement efficiency, representing a safer, more efficient, and economical method for replacing 200mm coke oven riser pipe sections.

[0032] In one specific implementation, two mounting components 104 are also included, which are detachably mounted to the bottom of the hanger 102.

[0033] The device for replacing coke oven riser pipes provided in this application also includes two detachable mounting components 104, which are respectively installed at the bottom of the hanger 102. These two mounting components 104 are made of steel structure. These two mounting components 104 enhance the stability of the bridge support frame, ensuring the stability of the device when replacing pipe sections and providing a solid foundation for the operation.

[0034] In one specific implementation, the two mounting pieces 104 are detachably connected to the riser platform support by bolts.

[0035] The two mounting components 104 in this application are detachably connected to the riser platform support via bolts, meaning the bridge support frame is detachably connected to the riser platform support using the mounting components 104. This detachable connection allows the same bridge support frame to be used to replace different riser pipes 200. In practical applications, when it is necessary to replace riser pipes 200 of different specifications or positions, simply disassemble and reinstall the corresponding mounting components 104 to quickly adapt to different riser platform supports. This design not only improves the versatility and flexibility of the device but also reduces the need for various specialized equipment, lowering equipment procurement and maintenance costs. Furthermore, the convenience of the bolted connection makes the assembly and disassembly of the device more efficient, further improving operational efficiency and providing greater convenience and economy for replacing coke oven riser pipe sections 200.

[0036] In some implementations, the bridge support frame is a U-shaped frame welded from channel steel, and the height of the hanger 102 is 2.5-3 meters.

[0037] The coke oven riser pipe 200 replacement device provided in this application features a bridge-type support frame made of U-shaped steel welded from channel steel. This frame possesses strong load-bearing capacity and stability, effectively supporting the entire device and the loads generated during operation. The hanger 102 is designed to be 2.5-3 meters high. This height range is based on the actual height of the coke oven riser pipe 200 and the required operating space, ensuring sufficient operating space during pipe section replacement without compromising stability or wasting materials due to excessive height. In practical applications, the height of this bridge-type support frame can be manufactured within the 2.5-3 meter range according to the specific height of the coke oven riser pipe 200 to adapt to different equipment conditions.

[0038] In one specific implementation, the hanger 102 in the bridge support frame is configured as a height-adjustable structure. For example, the hanger 102 includes a telescopic structure and a sleeve structure, both of which have multiple through holes spaced apart along the height direction. The height is adjusted by connecting different through holes with locking components. This design not only gives the device good versatility, meeting the replacement needs of various coke oven models, but also ensures high efficiency and safety in operation due to its reasonable height design, providing a reliable support structure for the replacement of the coke oven riser pipe 200 section.

[0039] In one specific implementation plan, the height of the bridge support frame is not adjustable and is 2.7 meters.

[0040] In one specific implementation, a bridge pipe 205 is provided above the upper pipe section 201, and a chain hoist 105 is hung on the bridge pipe 205. The chain hoists 105 on the two first lifting lugs 103 and the chain hoist 105 on the bridge pipe 205 are both 3 tons.

[0041] In this design, a chain hoist 105 is suspended on the bridge pipe 205 above the upper pipe section 201. This chain hoist 105 is mainly used to assist in stabilizing and adjusting the position of the pipe section. It is worth noting that the two chain hoists 105 suspended on the first lifting lug 103 and the chain hoist 105 suspended on the bridge pipe 205 all have a weight specification of 3 tons. This design ensures that all chain hoists 105 have consistent load-bearing capacity and tensile force during the replacement of the riser pipe section 200, thereby guaranteeing the balance and stability of the operation. Through the coordinated action of these chain hoists 105, operators can easily raise or lower the pipe section to complete the dismantling and installation operations, while reducing operational risks and improving replacement efficiency.

[0042] In one specific implementation, the hanger is provided with reinforcing ribs. That is, in this solution, reinforcing ribs are provided on the hanger to increase its supporting strength. The number and arrangement of the reinforcing ribs are not specifically limited. For example, the reinforcing ribs can be plate-like structures, extending along the height direction of the hanger.

[0043] In one specific implementation, the crossbeam has a plurality of spaced-apart mounting holes, and the hanger adjusts its position on the crossbeam by connecting to different mounting holes.

[0044] In this design, multiple mounting holes are provided on the crossbeam to allow for adjustable distance between the two hangers. During assembly of the crossbeam and hangers, the hanger's specific position on the crossbeam can be determined by connecting different mounting holes. This design enables the device to flexibly adapt to different specifications of riser pipes and various working environment requirements.

[0045] To enable those skilled in the art to better understand the solution of this application, the specific process of replacing the lower pipe section 203 and the upper pipe section 201 will be described in detail below.

[0046] When replacing the lower pipe section 203, securely install the dedicated bridge support frame onto the steel structure support of the riser pipe 200 platform using bolts. Suspend a 3-ton chain hoist 105 on each of the lifting lugs on both sides of the bridge support frame, and suspend another 3-ton chain hoist 105 on the bridge pipe 205. Disconnect and isolate gas, ammonia, and other pipelines associated with the lower pipe section 203, and remove the fixed base 208 at the bottom of the lower pipe section 203. Connect the hooks of the two 3T chain hoists 105 on the bridge support frame to the lifting lugs on both sides of the lower pipe section 203, slightly tighten the chain hoists 105 to transfer part of the weight of the lower pipe section 203 to the hanger 102, maintaining its stable position. Then completely remove all connecting bolts and flanges between the lower pipe section 203 and the upper pipe section 201, as well as surrounding pipelines. The operator moves away from the lower pipe section 203 and slowly and steadily operates the two 3T chain hoists 105 on the bridge support frame to release the old lower pipe section 203 vertically downwards, removing it from the installation position. If necessary, the operator can use the chain hoists 105 on the bridge pipe 205 to make minor adjustments to prevent the lower pipe section 203 from swinging. Finally, the old lower pipe section 203 is lowered to the safe area of ​​the furnace top 207 or removed by a transfer device.

[0047] Next, using the two 3T chain hoists 105 on the bridge support frame, lift the new lower pipe section 203 below the installation position. Slowly operate the chain hoists 105 to vertically lift it to the designed installation height. Fine-tune the chain hoists 105, using the chain hoists 105 on the bridge pipe 205 as needed, to ensure that the new lower pipe section 203 is precisely aligned with the upper connecting flange and the bottom base 208 installation point. Install and initially tighten the connecting bolts, then reinstall and secure the bottom base 208 of the lower pipe section 203. Tighten all flange connecting bolts completely to the specified torque, restore the gas, ammonia, and other pipelines connected to the new lower pipe section 203, and gradually release the load on the chain hoists 105 completely, allowing the weight of the new lower pipe section 203 to be fully transferred to its own structure and the support of the base 208.

[0048] Those skilled in the art will understand that the bridge pipe 205, as the necessary passage for gas after passing through the riser pipe 200, is a critical node in the gas system, connecting multiple pipelines. When replacing the upper pipe section 201, if the upper pipe section 201 and the bridge pipe 205 are removed, the bottom opening of the bridge pipe 205 will be exposed. At this point, gas supply must be stopped and the opening sealed; otherwise, work cannot proceed. Even after sealing, the operational risk of precisely aligning the tee flange when reinstalling the new upper pipe section 201 remains extremely high. Therefore, the solution in this application adopts a method of simultaneously disassembling and assembling the tee and the upper pipe section 201 as a single unit when replacing the upper pipe section 201. Specifically, the steps for replacing the upper pipe section 201 are largely the same as those for replacing the lower pipe section 203, but special care must be taken to treat the upper pipe section 201 and the bridge pipe 205 above it as a single unit for disassembly.

[0049] When replacing the riser pipe 200 using the device provided in this application, operators can move the pipe section away from the riser pipe 200 by operating the chain hoist 105, significantly reducing the risk of injury from falling parts or leaking media. At the same time, this device avoids the need for large crane rentals, complex site approvals, and prolonged downtime, effectively shortening replacement time and reducing maintenance costs.

[0050] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A device for replacing the riser pipe of a coke oven, characterized in that, include: A bridge-type support frame is fixed on the riser platform support; the bridge-type support frame includes a horizontally arranged crossbeam (101) and two vertically arranged hangers (102), wherein the crossbeam (101) has two first lifting lugs (103) symmetrically arranged along the vertical line of the crossbeam (101). Two second lifting lugs (202) are respectively fixedly installed on both sides of the upper pipe section (201) of the riser pipe (200); Two third lifting lugs (204) are respectively fixedly installed on both sides of the lower pipe section (203) of the riser pipe (200); and Two chain hoists are suspended on two first lugs (103) respectively, and are used to connect the second lug (202) or the third lug (204) to connect and replace the upper pipe section (201) or the lower pipe section (203).

2. The apparatus for replacing the coke oven riser pipe according to claim 1, characterized in that, It also includes two mounting pieces (104), which are detachably mounted on the bottom of the hanger (102).

3. The apparatus for replacing the coke oven riser pipe according to claim 2, characterized in that, The two mounting pieces (104) are detachably connected to the riser platform support by bolts.

4. The apparatus for replacing the coke oven riser pipe according to claim 1, characterized in that, The bridge support frame is a U-shaped frame welded from channel steel, and the height of the hanger (102) is 2.5-3 meters.

5. The apparatus for replacing the coke oven riser pipe according to claim 1, characterized in that, A bridge pipe (205) is provided above the upper pipe section (201), and a chain hoist is hung on the bridge pipe (205).

6. The apparatus for replacing the coke oven riser pipe according to claim 5, characterized in that, The hanger (102) includes a telescopic structure and a sleeve structure, and both the telescopic structure and the sleeve structure have multiple through holes spaced apart along the height direction. The height of the hanger is adjusted by connecting different through holes with locking components.

7. The apparatus for replacing the coke oven riser pipe according to claim 6, characterized in that, The hanger (102) is provided with reinforcing ribs.

8. The apparatus for replacing the coke oven riser pipe according to claim 5, characterized in that, The crossbeam (101) has a plurality of spaced mounting holes, and the hanger (102) adjusts its position on the crossbeam by connecting to different mounting holes.

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