Installation method of discharge pipeline of granulation tower system

Abstract

The invention discloses an installation method of a discharge pipeline of a granulation tower system, which realizes modular installation by pre-manufacturing fiber reinforced plastic pipe sections, reduces the time of field processing and assembling, adopts hoisting equipment to hoist and connect all pipe sections step by step, avoids interference of large-scale construction on normal operation of the granulation tower system, and improves the production efficiency. The downtime caused by construction is shortened, the whole installation process is systematized, standardized and easy to operate and manage, replacement pipeline installation and original pipeline cooperative dismantling are achieved, the difficulty in the dismantling process is lowered, the stability of the damaged pipeline dismantling process is improved, compared with integral original pipeline dismantling, part of pipeline supporting can be provided, and the construction efficiency is improved. And the replacement pipeline is accurately positioned between the granulation tower and the blast furnace, so that the installation efficiency, the construction safety and the system performance of the discharge pipeline of the granulation tower system are remarkably improved, meanwhile, the construction process is optimized, the maintenance cost is reduced, and high environmental adaptability and compatibility are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of blast furnace system installation and replacement, and particularly relates to an installation method for the discharge pipeline of a granulation tower system. Background Art

[0002] The information provided in this part is for the purpose of generally presenting the background of the present disclosure. To the extent described in this part, the work of the currently named inventors and aspects that may not constitute prior art descriptions at the time of filing are neither explicitly nor implicitly considered to be prior art to the present disclosure.

[0003] Currently, for the steel chimney of the granulation tower in the blast furnace slag treatment system, when replacing the fiberglass pipe and removing the original pipeline, the pipeline base material is made of steel. Due to long-term use, the exhaust pipe is severely corroded, the gaps at each connection gradually increase, and water vapor leaks from the welding joints and the main body part, resulting in loss of function and potential safety hazards.

[0004] During the replacement and installation of the fiberglass pipe and the removal of the exhaust pipe, the construction area belongs to the blast furnace top operation area. The construction hoisting height is extremely high, and there is a risk of gas leakage during hoisting operations in the area. Especially, the corrosion at the blast furnace structure is severe, resulting in poor structural strength. Especially for ultra-high and long-distance hoisting, it further increases the difficulty or safety risk of hoisting operations. Under abnormal production conditions, construction must be stopped to make way for the slag pit and production, and it is difficult to coordinate the operations of replacing the fiberglass pipe and removing the original pipeline. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the present application provides an installation method for the discharge pipeline of a granulation tower system to solve the problems of difficult removal of the discharge pipeline and affecting production operations in the prior art.

[0006] The above object of the present application is mainly achieved through the following technical solutions:

[0007] An installation method for the discharge pipeline of a granulation tower system, the installation method comprising:

[0008] Using fiber-reinforced plastics to fabricate a replacement horizontal pipe section, a replacement first vertical pipe section, and a replacement second vertical pipe section in the granulation tower area;

[0009] Setting up a first working platform on the granulation tower and arranging a first support member for supporting the original horizontal pipe section on the first working platform;

[0010] Connecting and fixing the original first vertical pipe section with a hoisting device, cutting at the elbows at both ends of the original horizontal pipe section, plugging the disconnected part of the original horizontal pipe section, and lifting the original first vertical pipe section away by the hoisting device;

[0011] Lift the replacement first vertical pipe section to the granulation tower by a lifting device and connect and fix the replacement first vertical pipe section on the granulation tower through a connecting flange;

[0012] The lifting device connects and removes the original second vertical pipe section;

[0013] Distribute multiple second support members at intervals on the original horizontal pipe section. The lifting device lifts the replacement horizontal pipe section to the second support members and connects the replacement horizontal pipe section and the replacement first vertical pipe section through a connecting flange;

[0014] The lifting device lifts the replacement second vertical pipe section and connects the replacement second vertical pipe section to one end of the replacement horizontal pipe away from the replacement first vertical pipe section through a connecting flange, and arranges multiple fixing members to connect the replacement second vertical pipe section and the blast furnace;

[0015] The lifting device lifts and removes the original horizontal pipe section and the second support members to complete the installation of the discharge pipeline.

[0016] In an alternative embodiment, when arranging the fixing members and installing the second vertical pipe section, build multiple working platforms on the blast furnace, and the operators can move to the working platforms to perform the fixing operation of the lifting ropes or the operation of installing the connecting pipe sections.

[0017] In an alternative embodiment, when cutting at the elbows at both ends of the original horizontal pipe section, keep the elbow between the original horizontal pipe section and the original first vertical pipe section on the original first vertical pipe section, and the elbow between the original horizontal pipe section and the original second vertical pipe section on the original horizontal pipe section.

[0018] In an alternative embodiment, after lifting the original first vertical pipe section away, install multiple first positioning members for positioning the replacement first vertical pipe section on the first support member.

[0019] In an alternative embodiment, when removing the original second vertical pipe section, cut and remove the original second vertical pipe section sequentially from top to bottom.

[0020] In an alternative embodiment, when removing the original second vertical pipe section, before performing a segmented circumcision on the original second vertical pipe section, confirm that the weight after cutting is within the lifting range of the lifting device.

[0021] In an alternative embodiment, there are two arc-shaped grooves on the second support member. One arc-shaped groove corresponds to and positions the original horizontal pipe section, and the other arc-shaped groove corresponds to and positions the replacement horizontal pipe section.

[0022] In an alternative embodiment, sealing gaskets are respectively arranged between the replacement horizontal pipe section and the replacement first vertical pipe section and the replacement second vertical pipe section.

[0023] In an alternative embodiment, before lifting the original first vertical pipe section, a baffle is arranged at the outlet of the relief pipe of the granulation tower to isolate the emissions at the outlet.

[0024] In an alternative embodiment, before cutting the original horizontal pipe section, a temperature measurement is performed on the outer wall of the original horizontal pipe section. When the temperature is higher than the construction temperature threshold, a heat insulation protection layer is laid on the outer wall of the original horizontal pipe section.

[0025] Compared with the prior art, the advantages of the present application are as follows:

[0026] The installation method in the present application is applied to the installation operation of the discharge pipeline of the granulation tower system. The installation method includes: fabricating a replacement horizontal pipe section, a replacement first vertical pipe section, and a replacement second vertical pipe section using fiber-reinforced plastics in the granulation tower area; erecting a first working platform on the granulation tower and arranging a first support member for supporting the original horizontal pipe section on the first working platform; connecting and fixing the original first vertical pipe section with a hoisting device, cutting at the elbows at both ends of the original horizontal pipe section, and blocking the disconnected part of the original horizontal pipe section, and lifting the original first vertical pipe section away by the hoisting device; hoisting the replacement first vertical pipe section to the granulation tower by the hoisting device and connecting and fixing the replacement first vertical pipe section on the granulation tower through a connecting flange; connecting and removing the original second vertical pipe section with the hoisting device; distributing a plurality of second support members at intervals on the original horizontal pipe section, hoisting the replacement horizontal pipe section to the second support members by the hoisting device, and connecting the replacement horizontal pipe section and the replacement first vertical pipe section through a connecting flange; hoisting the replacement second vertical pipe section by the hoisting device and connecting the replacement second vertical pipe section to one end of the replacement horizontal pipe away from the replacement first vertical pipe section through a connecting flange, and arranging a plurality of fixing members to connect the replacement second vertical pipe section and the blast furnace; hoisting and removing the original horizontal pipe section and the second support members by the hoisting device to complete the installation of the discharge pipeline.

[0027] Modular installation is achieved by prefabricating fiber-reinforced plastic pipe sections, reducing the time for on-site processing and assembly, significantly improving the installation efficiency. The hoisting device is used to hoist and connect each pipe section step by step, avoiding complex on-site welding and assembly operations, reducing the installation difficulty, shortening the installation cycle. A first working platform is erected on the granulation tower, and the first support member and the second support member are arranged to provide a stable working environment for construction workers and reduce the risk of high-altitude operations. The installation of the replacement pipeline and the coordinated removal of the original pipeline reduce the difficulty during the disassembly and installation process, as well as the stability during the removal of the damaged pipeline. Compared with the integral removal of the original pipeline, partial pipeline support can be provided, and precise positioning of the replacement pipeline between the granulation tower and the blast furnace can be achieved.

[0028] By demolishing the original pipeline (the original first vertical pipe section, the original second vertical pipe section, and the original horizontal pipe section) in sections, the risk of structural instability caused by overall demolition is avoided, and at the same time, the interference to surrounding equipment is reduced; through step-by-step hoisting and demolition, the interference of large-scale construction to the normal operation of the granulation tower system is avoided, and the downtime caused by construction is reduced. The entire installation process is systematic and standardized, making it easy to operate and manage.

[0029] Through modular design, step-by-step hoisting, material upgrade, and systematic construction process, the installation efficiency, construction safety, and system performance of the discharge pipeline of the granulation tower system are significantly improved. At the same time, the construction process is optimized, the maintenance cost is reduced, and it has high environmental adaptability and compatibility. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 It is a schematic flow chart of the installation method provided by the embodiment of the present application;

[0032] Figure 2 It is a schematic diagram after cutting the original horizontal pipe section provided by the embodiment of the present application;

[0033] Figure 3 It is a cross-sectional view at the second support provided by the embodiment of the present application;

[0034] In the figure: 101, replacement horizontal pipe section; 102, replacement first vertical pipe section; 103, replacement second vertical pipe section; 104, original horizontal pipe section; 201, first operation platform; 202, first support; 203, second support; 204, first positioning member; 205, fixing member; 206, arc-shaped groove. Detailed Embodiments

[0035] The present invention will be further described below in conjunction with the drawings and specific embodiments. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention. The specific structural and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0036] As Figure 1 shown, Figure 1 It is a schematic flow chart of the installation method provided by the embodiment of the present application.

[0037] An installation method for the discharge pipeline of a granulation tower system, the installation method comprising:

[0038] In the granulation tower area, use fiber reinforced plastic to fabricate a replacement horizontal pipe section 101, a replacement first vertical pipe section 102, and a replacement second vertical pipe section 103;

[0039] In the granulation tower area, according to the design requirements of the discharge pipeline, use fiber reinforced plastic (FRP) to pre-fabricate the following pipe sections:

[0040] Replacement horizontal pipe section 101: The length is customized according to the actual size of the original horizontal pipe section 104 to ensure that the connection interface with the original pipeline matches.

[0041] Replacement first vertical pipe section 102: The height is the same as that of the original first vertical pipe section, used to replace the original first vertical pipeline and connect to the granulation tower.

[0042] Replacement second vertical pipe section 103: The height is the same as that of the original second vertical pipe section, used to replace the original second vertical pipeline and connect to the blast furnace.

[0043] All replacement pipe sections are made of fiber reinforced plastic (FRP) material, which has the characteristics of high strength, corrosion resistance, and light weight to adapt to the working environment of the granulation tower system.

[0044] Build a first working platform 201 on the granulation tower, and arrange a first support member 202 on the first working platform 201 for supporting the original horizontal pipe section 104;

[0045] As Figure 1 、 Figure 2 shown, Figure 2 is a schematic diagram after cutting the original horizontal pipe section 104 provided by the embodiment of the present application. According to the construction height and operation space requirements, build a stable first working platform 201 for supporting construction personnel and equipment to ensure construction safety.

[0046] On the first working platform 201, arrange a first support member 202 for supporting the original horizontal pipe section 104. The first support member 202 can be made of high-strength steel and fixed to the working platform by bolts to ensure that the original horizontal pipe section 104 remains stable during construction and avoid shaking or deformation caused by cutting and hoisting operations.

[0047] And the first support member 202 is arranged on the first working platform 201 and provides reliable support for one end of the original horizontal pipe section 104. In the support state of the first support member 202, the other end of the original horizontal pipe section 104 is supported and positioned on a positioning frame based on the blast furnace.

[0048] As Figure 1 、 Figure 2As shown, the hoisting equipment connects and fixes the original first vertical pipe section, cuts at the elbows at both ends of the original horizontal pipe section 104, plugs the disconnected part of the original horizontal pipe section 104, and hoists away the original first vertical pipe section by the hoisting equipment;

[0049] Use hoisting equipment (such as a crane or a hoist) to connect and fix the original first vertical pipe section. At the elbows at both ends of the original horizontal pipe section 104, use professional cutting tools (such as a plasma cutting machine) to perform cutting operations to separate the original horizontal pipe section 104 from the original first vertical pipe section.

[0050] After cutting, install a plugging device (such as a flange blind plate or a welded head) at the disconnected part of the original horizontal pipe section 104 to ensure that no medium leaks inside the pipeline when the original first vertical pipe section is removed.

[0051] Through the hoisting equipment, hoist the original first vertical pipe section smoothly away from the granulation tower area and place it in a designated safe area for subsequent processing or recycling.

[0052] The hoisting equipment hoists and replaces the first vertical pipe section 102 onto the granulation tower and connects and fixes the replaced first vertical pipe section 102 on the granulation tower through a connecting flange;

[0053] Use the hoisting equipment to hoist the prefabricated replaced first vertical pipe section 102 to the installation position of the granulation tower. Through the connecting flange, connect the replaced first vertical pipe section 102 to the granulation tower and fix it with high-strength bolts to ensure the reliability and tightness of the connection.

[0054] During the connection process, sealing gaskets and sealants can be used to ensure the sealing performance of the flange connection and prevent gas or liquid leakage.

[0055] The hoisting equipment connects and removes the original second vertical pipe section;

[0056] Use the hoisting equipment to connect the original second vertical pipe section. During the removal process, ensure smooth operation to avoid damaging the surrounding equipment and structures. The removed original second vertical pipe section is also placed in a designated safe area for subsequent processing.

[0057] Distribute multiple second support members 203 at intervals on the original horizontal pipe section 104. The hoisting equipment hoists and replaces the horizontal pipe section 101 onto the second support members 203 and connects the replaced horizontal pipe section 101 to the replaced first vertical pipe section 102 through a connecting flange;

[0058] As Figure 2 、 Figure 3 shown, Figure 3Cross-sectional view of the second support provided in the embodiment of the present application; on the original horizontal pipe section 104, a plurality of second supports 203 are distributed at intervals according to design requirements. The second support 203 is used to temporarily support the replacement horizontal pipe section 101 to ensure its stability during hoisting and connection, and to maintain the installation accuracy of the replacement horizontal pipe section 101.

[0059] Use a hoisting device to hoist the replacement horizontal pipe section 101 onto the second support 203, and connect the replacement horizontal pipe section 101 to the replacement first vertical pipe section 102 through a connecting flange. When connecting, high-strength bolts and sealing gaskets can be used to ensure the firmness and tightness of the connection.

[0060] The hoisting device hoists the replacement second vertical pipe section 103, and connects the replacement second vertical pipe section 103 to one end of the replacement horizontal pipe away from the replacement first vertical pipe section 102 through a connecting flange, and arranges a plurality of fixing members 205 to connect the replacement second vertical pipe section 103 to the blast furnace;

[0061] Use a hoisting device to hoist the replacement second vertical pipe section 103 onto the granulation tower and connect it to one end of the replacement horizontal pipe away from the first vertical pipe section through a connecting flange.

[0062] At the connection between the replacement second vertical pipe section 103 and the blast furnace, arrange a plurality of fixing members 205 (such as brackets or clamps) to firmly connect the second vertical pipe section to the blast furnace structure to ensure the overall stability of the pipeline system.

[0063] The hoisting device hoists and removes the original horizontal pipe section 104 and the second support 203 to complete the installation of the discharge pipeline. During the removal process, ensure smooth operation to avoid damaging the newly installed pipeline system. The removed original horizontal pipe section 104 and the second support 203 are placed in a designated safe area for subsequent processing or recycling.

[0064] Furthermore, after the installation operation of the granulation tower system discharge pipeline is completed, the construction personnel check the entire pipeline system to ensure that all connection points are firm, have good tightness, the pipeline system meets the design requirements, and can be put into normal use, which is applicable to pipeline replacement or upgrade operations in complex industrial environments such as blast furnaces and granulation towers.

[0065] The installation method in this application is applied to the installation operation of the discharge pipeline of the granulation tower system. The operating principle of the installation method is as follows: The installation method includes: First, in the granulation tower area, fiber-reinforced plastics are used to fabricate a replacement horizontal pipe section 101, a replacement first vertical pipe section 102, and a replacement second vertical pipe section 103; a first working platform 201 is erected on the granulation tower, and a first support member 202 for supporting the original horizontal pipe section 104 is arranged on the first working platform 201; the hoisting equipment is connected and fixed to the original first vertical pipe section, cutting is carried out at the elbows at both ends of the original horizontal pipe section 104, and the disconnection point of the original horizontal pipe section 104 is blocked, and the original first vertical pipe section is lifted away by the hoisting equipment; the hoisting equipment hoists the replacement first vertical pipe section 102 onto the granulation tower, and the replacement first vertical pipe section 102 is connected and fixed on the granulation tower through a connecting flange; the hoisting equipment is connected and the original second vertical pipe section is removed; a plurality of second support members 203 are distributed at intervals on the original horizontal pipe section 104, the hoisting equipment hoists the replacement horizontal pipe section 101 onto the second support members 203, and the replacement horizontal pipe section 101 is connected to the replacement first vertical pipe section 102 through a connecting flange; the hoisting equipment hoists the replacement second vertical pipe section 103, and the replacement second vertical pipe section 103 is connected through a connecting flange to one end of the replacement horizontal pipe away from the replacement first vertical pipe section 102, and a plurality of fixing members 205 are arranged to connect the replacement second vertical pipe section 103 to the blast furnace; the hoisting equipment hoists and removes the original horizontal pipe section 104 and the second support members 203 to complete the installation of the discharge pipeline.

[0066] Modular installation is achieved by prefabricating fiber-reinforced plastic pipe sections, reducing the time for on-site processing and assembly, significantly improving the installation efficiency. The hoisting equipment is used to hoist and connect each pipe section step by step, avoiding complex on-site welding and assembly operations, reducing the installation difficulty, shortening the installation cycle. A first working platform 201 is erected on the granulation tower, and the first support member 202 and the second support member 203 are arranged, providing a stable working environment for construction personnel, reducing the risk of high-altitude operations. The installation of replacement pipelines and the coordinated removal of the original pipelines reduce the difficulty during the disassembly and installation process, as well as the stability during the removal of damaged pipelines. Compared with the integral removal of the original pipeline, partial pipeline support can be provided, and precise positioning of the replacement pipeline between the granulation tower and the blast furnace can be achieved.

[0067] By segmentally removing the original pipelines (the original first vertical pipe section, the original second vertical pipe section, the original horizontal pipe section 104), the risk of structural instability caused by integral removal is avoided, and at the same time, the interference to surrounding equipment is reduced; through step-by-step hoisting and removal, the interference to the normal operation of the granulation tower system caused by large-scale construction is avoided, and the downtime caused by construction is reduced. The entire installation process is systematic and standardized, and is easy to operate and manage.

[0068] Through modular design, step-by-step hoisting, material upgrade and systematic construction process, the installation efficiency, construction safety and system performance of the discharge pipeline of the granulation tower system have been significantly improved. At the same time, the construction process has been optimized, the maintenance cost has been reduced, and it has high environmental adaptability and compatibility.

[0069] In an alternative embodiment, when arranging the fixing member 205 and installing the second vertical pipe section, a plurality of working platforms are erected on the blast furnace, and the operators can move to the working platforms to fix the hoisting ropes or install the connecting pipe sections.

[0070] When arranging the fixing member 205 and installing the second vertical pipe section, in order to improve the construction efficiency and safety, a plurality of working platforms are erected on the blast furnace. These working platforms are distributed at different heights of the blast furnace to meet the construction requirements at different positions. The operators can move to the corresponding working platforms to fix the hoisting ropes or install the connecting pipe sections. Each working platform is equipped with guardrails and anti-slip measures to ensure the safety of the construction personnel.

[0071] As Figure 1 、 Figure 2 shown, in an alternative embodiment, when cutting at the elbows at both ends of the original horizontal pipe section 104, keep the elbow between the original horizontal pipe section 104 and the original first vertical pipe section on the original first vertical pipe section, and the elbow between the original horizontal pipe section 104 and the original second vertical pipe section on the original horizontal pipe section 104.

[0072] When cutting at the elbows at both ends of the original horizontal pipe section 104, adopt the cutting strategy: keep the elbow between the original horizontal pipe section 104 and the original first vertical pipe section on the original first vertical pipe section, and the elbow between the original horizontal pipe section 104 and the original second vertical pipe section on the original horizontal pipe section 104. This cutting method can reduce the cutting amount, avoid the difficulty of replacement operation at the elbow, and save time and cost.

[0073] As Figure 1 、 Figure 2 shown, in an alternative embodiment, after lifting off the original first vertical pipe section, a plurality of first positioning members 204 for positioning and replacing the first vertical pipe section 102 are installed on the first support member 202.

[0074] After lifting off the original first vertical pipe section, a plurality of first positioning members 204 for positioning and replacing the first vertical pipe section 102 are installed on the first support member 202. These first positioning members 204 are made of high-strength materials and can be fixed on the first support member 202 by bolts. The extended position of the first positioning member 204 matches the installation position of the replaced first vertical pipe section 102, which can ensure that the replaced first vertical pipe section 102 remains stable during hoisting and avoid shaking or misalignment.

[0075] In an alternative embodiment, when removing the original second vertical pipe section, the original second vertical pipe section is cut and removed sequentially from top to bottom.

[0076] When removing the original second vertical pipe section, it is removed by cutting sequentially from top to bottom. The construction workers use professional cutting tools on the working platform to cut the original second vertical pipe section section by section and lift it off smoothly through a hoisting device. This can effectively reduce the weight of a single hoisting, reduce the burden on the hoisting device, and improve the safety of construction at the same time.

[0077] In an alternative embodiment, when removing the original second vertical pipe section, before segmentally circumferentially cutting the original second vertical pipe section, it is confirmed that the weight after cutting is within the lifting range of the hoisting device.

[0078] Before segmentally circumferentially cutting the original second vertical pipe section, the construction workers need to estimate the weight of the pipe section after cutting and confirm that the weight is within the lifting range of the hoisting device. By calculating the volume and material density of the pipe section and combining with the rated lifting capacity of the hoisting device, the safety and reliability of each hoisting operation are ensured. If the weight of the pipe section exceeds the lifting range of the hoisting device, further segmental cutting is required to ensure safety.

[0079] In an alternative embodiment, two arc-shaped grooves 206 are provided on the second support member 203. One arc-shaped groove 206 corresponds to and positions the original horizontal pipe section 104, and the other arc-shaped groove 206 corresponds to and positions the replacement horizontal pipe section 101.

[0080] Two arc-shaped grooves 206 are provided on the second support member 203. One arc-shaped groove 206 corresponds to and positions the original horizontal pipe section 104, and the other arc-shaped groove 206 corresponds to and positions the replacement horizontal pipe section 101. This enables the second support member 203 to reliably support both the original horizontal pipe section 104 and the replacement horizontal pipe section 101 at the same time, ensuring that the pipeline remains stable during hoisting and installation. The inner surface of the arc-shaped groove 206 is treated with an anti-slip material to prevent the pipeline from sliding during support.

[0081] In an alternative embodiment, gaskets are respectively provided between the replacement horizontal pipe section 101 and the replacement first vertical pipe section 102 and the replacement second vertical pipe section 103.

[0082] Gaskets are respectively provided between the replacement horizontal pipe section 101 and the replacement first vertical pipe section 102 and the replacement second vertical pipe section 103. This ensures the firmness and tightness of the connection. It can adapt to thermal expansion and contraction to a certain extent and is also convenient for subsequent maintenance and replacement.

[0083] In an alternative embodiment, before lifting off the original first vertical pipe section, a baffle is arranged at the outlet of the discharge pipe of the granulation tower to isolate the emissions at the outlet.

[0084] Before lifting the original first vertical pipe section, a baffle is arranged at the outlet of the relief pipe of the granulation tower to isolate the emissions at the outlet. The baffle is made of high-temperature resistant and corrosion-resistant materials and is fixed to the outlet of the relief pipe by bolts. This can prevent the emissions from polluting or harming the construction personnel and equipment during the construction process and ensure the safety of the construction environment.

[0085] In an alternative embodiment, before cutting the original horizontal pipe section 104, a temperature measurement and detection is carried out on the outer wall of the original horizontal pipe section 104. When the temperature is higher than the construction temperature threshold, a heat insulation protective layer is laid on the outer wall of the original horizontal pipe section 104.

[0086] Before cutting the original horizontal pipe section 104, a temperature measurement and detection is carried out on the outer wall of the original horizontal pipe section 104. If the temperature is higher than the construction temperature threshold (for example, exceeding 45 °C), a heat insulation protective layer is laid on the outer wall of the original horizontal pipe section 104. The heat insulation protective layer is made of high-temperature resistant heat insulation materials such as rock wool or ceramic fiber and is fixed to the outer wall of the pipe section by tying or pasting. This measure can prevent the high temperature from harming the construction personnel and equipment, and at the same time avoid the deformation or damage of the pipeline caused by the high temperature.

[0087] It should be understood that the terms first, second, etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, the first unit may be called the second unit, and similarly, the second unit may be called the first unit, without departing from the scope of the exemplary embodiments of the present invention.

[0088] It should be understood that the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" herein is a description of another association object relationship, indicating that two relationships may exist. For example, A / and B may represent: A exists alone, and A and B exist alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0089] It should be understood that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "vertical", "inner", "outer", etc. is the orientation or positional relationship in which the disclosed product is habitually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0090] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement", "installation", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0091] The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, 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 terms "include", "include(s)", "comprise", and / or "comprise(s)" when used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not preclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0092] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, those of ordinary skill in the art should understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and technologies may not be shown in unnecessary detail to avoid obscuring the exemplary embodiments.

[0093] The above are only specific implementation manners of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the broadest scope consistent with the principles and novel features claimed herein.

[0094] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art.

Claims

1. A method for installing a discharge pipe of a granulation tower system, characterized in that: The installation method comprises: In the granulating tower area, a replacement horizontal pipe section, a replacement first vertical pipe section, and a replacement second vertical pipe section are made of fiber reinforced plastic; A first working platform is set up on the granulating tower, and a first supporting member for supporting the original horizontal pipe section is arranged on the first working platform; The hoisting equipment is connected and fixed to the original first vertical pipe section, the elbows at both ends of the original horizontal pipe section are cut, and the disconnection of the original horizontal pipe section is sealed, and the original first vertical pipe section is lifted away by the hoisting equipment; The lifting equipment lifts the replaced first vertical pipe section to the granulating tower, and connects and fixes the replaced first vertical pipe section on the granulating tower through the connecting flange; The hoisting equipment connects and removes the original second vertical pipe section; A plurality of second supporting members are distributed at intervals on the original horizontal pipe section, and the lifting equipment lifts the replacement horizontal pipe section onto the second supporting members, and connects the replacement horizontal pipe section with the replacement first vertical pipe section through a connecting flange; The lifting equipment lifts and replaces the second vertical pipe section, and connects the replaced second vertical pipe section to an end of the replaced horizontal pipe away from the replaced first vertical pipe section through a connecting flange, and arranges a plurality of fixings to connect the replaced second vertical pipe section and the blast furnace; The hoisting equipment hoists and removes the original horizontal pipe section and the second support to complete the installation of the discharge pipeline.

2. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: When arranging the fixings and installing the second vertical pipe section, a plurality of working platforms are set up on the blast furnace, and the operating personnel can move to the working platforms to fix the lifting ropes or install the connecting pipe sections.

3. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: When cutting at the elbows at both ends of the original horizontal pipe section, keep the elbow between the original horizontal pipe section and the original first vertical pipe section on the original first vertical pipe section, and keep the elbow between the original horizontal pipe section and the original second vertical pipe section on the original horizontal pipe section.

4. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: After the original first vertical pipe section is lifted off, a plurality of first positioning members for positioning the replacement first vertical pipe section are installed on the first support member.

5. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: When dismantling the original second vertical pipe section, cut and dismantle the original second vertical pipe section from top to bottom.

6. The method for installing the discharge pipe of the granulation tower system according to claim 5, characterized in that: When dismantling the original second vertical pipe section, before performing segmented circular cutting of the original second vertical pipe section, confirm that the weight after cutting is within the lifting range of the lifting equipment.

7. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: The second support member is provided with two arc-shaped grooves, one of which corresponds to and positions the original horizontal pipe section, and the other of which corresponds to and positions the replacement horizontal pipe section.

8. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: Sealing gaskets are respectively arranged between the replacement horizontal pipe section and the replacement first vertical pipe section and the replacement second vertical pipe section.

9. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: Before lifting away from the original first vertical pipe section, a baffle is arranged at the outlet of the discharge pipe of the granulation tower to isolate the discharge at the outlet.

10. The method for installing the discharge pipe of the granulation tower system according to claim 1, characterized in that: Before cutting the original horizontal pipe section, the outer wall of the original horizontal pipe section is temperature-measured and tested. When the temperature is greater than the construction temperature threshold, a thermal insulation protective layer is laid on the outer wall of the original horizontal pipe section.

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