Boiler barrel mounting method

Abstract

The invention relates to the technical field of boiler installation, and discloses a boiler barrel installation device and method.The device comprises a supporting system, a hoisting assembly arranged at the top of the supporting system, a free beam wound around the supporting system and a crane arranged on one side of the free beam; wherein the hoisting assembly is arranged in the center of the top of the supporting system; the hoisting assembly is used for driving the boiler barrel to move along the supporting system; the free beam is used for providing supporting force for the supporting system; and the crane is used for driving the free beam to move along the supporting system. According to the invention, the hoisting precision and safety can be effectively controlled.

Description

Technical Field

[0001] The invention relates to the technical field of boiler installation, and in particular to a boiler drum installation method. Background Art

[0002] In the installation practice of boiler systems in thermal power plants today, most manufacturers follow the established installation process and construction schedule, starting from the boiler's steel frame system and gradually installing core components such as the top drum, heating surface and flue. In general, the front steel frame of the boiler is installed first. The drum is longer and heavier, and is installed at the front and below the top plate beam. The position of each layer of connecting secondary beams between the positions overlaps with the projection position of the top drum. In order to ensure that the drum can be smoothly and safely in place, it is often necessary to adopt an inclined lifting method when installing the drum, which will make the force more complicated; or a larger-level crane is used for the top peripheral lifting operation, which brings safety and economic burdens to the on-site construction. Summary of the invention

[0003] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a boiler drum installation method that can solve the problem of complex boiler drum installation methods and effectively control the accuracy and safety of boiler drum hoisting.

[0004] In order to achieve the above-mentioned object, the present invention provides a boiler drum installation device, comprising: a support system, a hoisting assembly arranged on the top of the support system, a free beam arranged around the support system, and a crane arranged on one side of the free beam; wherein,

[0005] The hoisting assembly is arranged at the center of the top of the support system;

[0006] The hoisting assembly is used to drive the drum to be installed to move along the support system to the installation position;

[0007] The free beam is used to provide support force for the support system;

[0008] The crane is used to drive the free beam to move along the support system.

[0009] Preferably, the support system comprises: a main beam frame, a top plate beam arranged on the top of the main beam frame, and secondary beams evenly arranged on the main beam frame; wherein,

[0010] The secondary beam is vertically arranged inside the main beam frame;

[0011] The secondary beam is used to reinforce the main beam frame.

[0012] Preferably, the free beam comprises: a long plate, fixing members arranged on both sides of the long plate, a fixing plate arranged in the fixing members, and an adjusting bolt arranged on the fixing plate, wherein:

[0013] One end of the adjusting bolt is arranged in the middle of the fixing plate, and the middle of the adjusting bolt is penetrated on the side wall of the fixing member;

[0014] The long board is wound around the support system, and the fixing piece is sleeved on the main beam;

[0015] The adjusting bolt is used to adjust the distance between the fixing plate and the fixing member.

[0016] Preferably, buffer pads are respectively provided on the side walls of the fixing member and the fixing plate facing each other;

[0017] A reinforcing plate is arranged in the fixing member, and the reinforcing plate is used to balance the force on the fixing plate.

[0018] Preferably, a hoisting assembly is arranged on the top of the roof beam, and the hoisting assembly comprises: a hoisting frame, a hoisting lug arranged at the bottom of the hoisting frame, a drum hoisting rod arranged under the hoisting frame, and driving members respectively arranged on both sides of the hoisting frame, wherein:

[0019] The drum suspension rod is inserted into the lifting ear, and two ends of the drum suspension rod are respectively wound around the driving member;

[0020] The lifting lug is used to limit the boiler drum hanging rod;

[0021] The driving member is used to control the movement of the drum suspension rod;

[0022] The boiler drum hanging rod is used to hang the boiler drum to be installed.

[0023] Preferably, a pull rod is provided on the hanging frame, and the pull rod is used to reinforce the hanging frame;

[0024] A base is arranged at the lower end of the hanging frame.

[0025] Preferably, a clamp is provided on the boiler drum to be installed, and the clamp is connected to the boiler drum suspension rod.

[0026] Preferably, a method for installing a boiler drum comprises the following steps:

[0027] S1: Building a support system, and installing free beams and hoisting components on the support system;

[0028] S2: transporting the boiler drum to be installed to a target position away from the support system;

[0029] S3: pre-treating the boiler drum to be installed that is transported to the target location, and hanging the pre-treated boiler drum to be installed on the hoisting assembly;

[0030] S4: hoisting the boiler drum to be installed to the installation position of the boiler drum to be installed by the hoisting assembly.

[0031] Preferably, in step S4, hoisting the drum to be installed to the installation position of the drum to be installed by the hoisting assembly comprises the following steps:

[0032] S41: Hanging the boiler drum to be installed on the boiler drum hanging rod of the hanging assembly;

[0033] S42: driving the boiler drum to be installed to move along the main beam of the support system through the boiler drum suspension rod, and driving the free beam to move along the main beam along with the boiler drum to be installed through the crane;

[0034] S43: when the boiler drum to be installed is moving along the main beam, and the boiler drum to be installed encounters the secondary beam perpendicular to the moving direction, the secondary beam is removed and the free beam is fixed at the same time;

[0035] S44: the boiler drum suspension rod drives the boiler drum to be installed to move and passes through the original position of the removed secondary beam;

[0036] S45: re-fixing the removed secondary beam to the main beam, and at the same time releasing the free beam from the main beam and continuing to move along the main beam following the boiler drum to be installed;

[0037] S46: Repeat steps S43-S45 until the drum to be installed reaches the installation position.

[0038] Preferably, pre-treating the drum to be installed comprises the following steps:

[0039] Check the longitudinal center line, transverse center line and four corner horizontal marks of the drum to be installed;

[0040] According to the longitudinal center line, transverse center line and four corner horizontal marks, the horizontal degree and direction angle of the boiler drum to be installed are determined.

[0041] According to the above description and practice, the drum installation method of the present invention adopts an adjustable, fitted frame free beam to support and protect the support system, ensuring the integrity of the support system, thereby achieving the functionality of horizontal drum hoisting and replacing the secondary beam; the addition of the top hoisting assembly ensures the space and functionality of various hoists. It enables the smooth hoisting and lifting operation, and is simple, fast, safe and reliable, ensuring the structurality, effectiveness and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The present invention is a flowchart of a boiler drum installation method according to an embodiment of the present invention.

[0043] Figure 2 It is a top view of a support system involved in one embodiment of the present invention.

[0044] Figure 3 It is a schematic diagram of the operation of the hoisting assembly driving the boiler drum to move in one embodiment of the present invention.

[0045] Figure 4 It is a schematic diagram of the structure of a free beam involved in an embodiment of the present invention.

[0046] Figure 5 It is a front view of a lifting assembly involved in one embodiment of the present invention.

[0047] Figure 6 It is a side view of a lifting assembly involved in one embodiment of the present invention.

[0048] The reference numerals in the figure are:

[0049] 1. Support system; 11. Secondary beam; 2. Free beam; 21. Long board; 22. Fixing parts; 23. Fixing plate; 24. Adjusting bolts; 25. Reinforcement plate; 26. Buffer pad; 3. Lifting assembly; 31. Lifting frame; 311. Lifting ear; 32. Driving part; 33. Boiler drum hanging rod; 34. Base; 35. Pull rod; 4. Boiler drum. DETAILED DESCRIPTION

[0050] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0051] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which 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 cannot be understood as a limitation on the present invention.

[0052] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In this embodiment, a method for installing a boiler drum is disclosed. Figure 1 The whole process of the drum installation method is shown; Figure 2 The structure of the support system is shown from different top-down angles; Figure 3 The working process of the hoisting assembly driving the drum to move is shown; Figure 4 The structure of the free beam is shown; Figure 5 and Figure 6 The structure of the lifting assembly is shown from different perspectives.

[0054] In view of the problem in the above-mentioned prior art that the construction space is small and cannot meet the requirements of horizontal lifting, and large equipment such as the boiler drum needs to be tilted at a certain angle, resulting in uneven force, the present invention proposes a boiler drum installation method.

[0055] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0056] Please refer to Figures 1 to 5The boiler drum installation device of the present invention comprises: a support system 1, a hoisting assembly 3 arranged on the top of the branch system 1, a free beam 2 arranged around the support system, and a crane arranged on one side of the free beam 2; wherein the hoisting assembly 3 is arranged at the center of the top of the support system 1; the hoisting assembly 3 is used to drive the boiler drum 4 to be installed to move along the support system 1 to the installation position; the free beam 2 is used to provide support force for the support system 1; and the crane is used to drive the free beam 2 to move along the support system 1. The secondary beam 11 is closely connected with the main beam to form a stable support frame. The free beam 2 is arranged around the support system 1 to provide necessary flexibility and support in the subsequent hoisting process of the boiler drum 4. During the construction process, the free beam 2 is driven by the crane to move along the support system 1. The secondary beam 11 of the support system 1 will hinder the hanging of the boiler drum 4. Therefore, before the boiler drum 4 arrives, the secondary beam 11 is disassembled. After the secondary beam 11 is disassembled, the free beam 2 is fixed. The free beam 2 replaces the secondary beam 11 to ensure the integrity of the support system 1.

[0057] The support system includes: a main beam frame, a top beam arranged on the top of the main beam frame, and secondary beams 11 evenly arranged on the main beam frame; wherein the secondary beams 11 are vertically arranged inside the main beam frame; and the secondary beams 11 are used to strengthen the supporting force of the main beam frame. The main beam frame and the secondary beams 11 are both made of steel, which has high strength, high elastic modulus, light weight, and is easy to transport and install, and is suitable for structures with large spans, high heights, and heavy loads.

[0058] The free beam 2 includes: a long plate 21, a fixing member 22, a fixing plate 23 and an adjusting bolt 24. The fixing member 22 is arranged on both sides of the long plate 21, the fixing plate 23 is arranged inside the fixing member 22, the adjusting bolt 24 is arranged on the fixing plate 23, one end of the adjusting bolt 24 is arranged in the middle of the fixing plate 23, and the middle of the adjusting bolt 24 is penetrated on the side wall of the fixing member 22; the long plate 21 is arranged around the support system, and the fixing member 22 is sleeved on the main beam frame, wherein the adjusting bolt 24 can adjust the distance between the fixing plate 23 and the fixing member 22. By rotating the adjusting bolt 24, the fixing member 22 and the fixing plate 23 are abutted against the main beam frame, thereby realizing the fixation of the free beam 2, and the free beam 2 is flexibly adjusted in position with the movement of the drum 4, providing the necessary support and guidance for the drum 4.

[0059] Among them, buffer pads 26 are respectively arranged on the side walls facing the fixing member 22 and the fixing plate 23, which effectively improves the durability and safety of the system. In this embodiment, the buffer pads 26 are rubber pads, which can increase the friction between the fixing member 22, the fixing plate 23 and the main beam, and connect the free beam 2 more firmly to the main beam to prevent the free beam 2 from falling off.

[0060] A reinforcing plate 25 is provided in the fixing member 22 , and the reinforcing plate 25 can balance the force on the fixing plate 23 , so that the force exerted by the adjusting bolt 24 on the fixing plate 23 is more uniform, further enhancing the adjusting ability of the adjusting bolt 24 .

[0061] The hoisting assembly 3 includes: a hoisting frame 31, a lifting ear 311 arranged at the bottom of the hoisting frame, a drum suspension rod 33 arranged under the hoisting frame 31, and a driving member 32 arranged on both sides of the hoisting frame 31, wherein the drum suspension rod is inserted into the lifting ear 311, and the driving member 32 is electrically connected to the drum suspension rod 33. The drum suspension rod 33 is inserted into the lifting ear 311, and the two ends of the drum suspension rod 33 are respectively wound on the driving member 32; the lifting ear 311 is used to limit the drum suspension rod 33; the driving member 32 is used to control the movement of the drum suspension rod 33; the drum suspension rod 33 is used to hang the drum 4 to be installed. In this embodiment, the driving member 32 is a winch, which has a simple structure, convenient operation, and stable and reliable hoisting. The lifting ropes at both ends of the drum suspension rod 33 are respectively wound on the driving members 32 on both sides of the hoisting frame 31, and the driving member 32 is started to retract the lifting ropes, thereby driving the drum suspension rod 33 to hoist the drum 4. Transport the boiler drum 4 to the bottom of the boiler steel frame, that is, transport the boiler drum 4 to 0 meters from the projection of the center of the boiler steel frame. In order to ensure that the boiler drum 4 can move along the shortest path and rise smoothly during the lifting process, it is necessary to avoid collision with surrounding obstacles. The boiler drum 4 is slowly lifted up by the boiler drum lifting rod 33. During the whole process, the technicians need to closely monitor the lifting speed and status of the boiler drum 4 to ensure that all operations are carried out within a safe and controllable range. A pull rod 35 is provided on the lifting frame 31. The pull rod 35 is used to reinforce the lifting frame 31, which effectively prevents shaking or deformation that may occur during the lifting process. Figure 5 As shown, in this embodiment, one end of the pull rod 35 is placed at the bottom of the top plate of the hanging frame 31, and the other end is placed on the support leg of the hanging frame 31, thereby strengthening the supporting force between the support leg and the top plate and ensuring the stability of the hanging frame 31.

[0062] A base 34 is provided at the lower end of the hanging frame 31, and the base 34 is closely connected with the support system 1, providing a solid support foundation for the entire hanging system. The base 34 is fixed to the bottom of the support leg of the hanging frame 31 by welding, and the base 34 is conducive to the fixation between the hanging frame 31 and the support system 1.

[0063] Among them, a clamp is arranged on the boiler drum 4 to be installed, and the clamp can better connect the boiler drum 4 with the boiler drum suspension rod, ensuring that the boiler drum suspension rod can better fix the boiler drum.

[0064] Please refer to Figure 6 , the drum installation method of the present invention comprises the following steps: S1: constructing a support system, and installing a free beam and a hoisting assembly on the support system;

[0065] S2: transporting the boiler drum to be installed to a target position away from the support system;

[0066] S3: pre-treating the boiler drum to be installed that is transported to the target location, and hanging the pre-treated boiler drum to be installed on the hoisting assembly;

[0067] S4: hoisting the boiler drum to be installed to the installation position of the boiler drum to be installed by the hoisting assembly.

[0068] In step S1, the technicians accurately measure and mark the positions of the main beam frame and the secondary beam 11 according to the design drawings, and then assemble the main beam frame and the secondary beam 11. The main beam frame is the main load-bearing component of the support structure to ensure the stability of the entire support system 1.

[0069] In step S3, the inspection of the boiler drum 4 includes: checking and verifying the longitudinal and transverse center lines and the horizontal marks at the four corners of the boiler drum 4 when it leaves the factory; finding the positive line includes: finding the horizontal and directional angles of the installation after hoisting.

[0070] In step S4, the boiler drum to be installed is hoisted to the installation position of the boiler drum to be installed by the hoisting assembly, including the following steps:

[0071] S41: Hanging the boiler drum to be installed on the boiler drum hanging rod of the hanging assembly;

[0072] S42: driving the boiler drum to be installed to move along the main beam of the support system through the boiler drum suspension rod, and driving the free beam to move along the main beam along with the boiler drum to be installed through the crane;

[0073] S43: when the boiler drum to be installed is moving along the main beam, and the boiler drum to be installed encounters the secondary beam perpendicular to the moving direction, the secondary beam is removed and the free beam is fixed at the same time;

[0074] S44: the boiler drum suspension rod drives the boiler drum to be installed to move and passes through the original position of the removed secondary beam;

[0075] S45: re-fixing the removed secondary beam to the main beam, and at the same time releasing the free beam from the main beam and continuing to move along the main beam following the drum to be installed;

[0076] S46: Repeat steps S43-S45 until the drum to be installed reaches the installation position.

[0077] In step S4, the driving member 32 is started to drive the boiler drum suspension rod to start moving, and the boiler drum 4 begins to slowly rise along the support system 1. In this process, the free beam 2 flexibly adjusts its position as the boiler drum 4 moves, providing the necessary support and guidance for the boiler drum 4. When the boiler drum 4 meets the secondary beam 11, the technician will quickly dismantle the secondary beam 11 to avoid collision with the boiler drum 4. After disassembly, the boiler drum suspension rod continues to drive the boiler drum 4 to rise until the boiler drum 4 is lifted to a position higher than the original position of the secondary beam 11, and then the secondary beam 11 is restored to its original position. This process requires a high degree of coordination and cooperation to ensure that each step of the operation is accurate. As the boiler drum 4 continues to rise, the technician needs to repeatedly perform the operations in step S5 until the boiler drum 4 is hoisted to the required position for construction.

[0078] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A drum installation device, characterized in that: include: A support system, a hoisting assembly arranged on the top of the support system, a free beam arranged around the support system, and a crane arranged on one side of the free beam; wherein, The hoisting assembly is arranged at the center of the top of the support system; The hoisting assembly is used to drive the drum to be installed to move along the support system to the installation position; The free beam is used to provide support force for the support system; The crane is used to drive the free beam to move along the support system.

2. The drum installation device according to claim 1, characterized in that: The support system includes: a main beam frame, a top plate beam arranged on the top of the main beam frame, and secondary beams evenly arranged on the main beam frame; wherein, The secondary beam is vertically arranged inside the main beam frame; The secondary beam is used to reinforce the main beam frame.

3. The drum installation device according to claim 2, characterized in that: The free beam includes: a long plate, fixing members arranged on both sides of the long plate, a fixing plate arranged in the fixing members, and an adjusting bolt arranged on the fixing plate, wherein: One end of the adjusting bolt is arranged in the middle of the fixing plate, and the middle of the adjusting bolt is penetrated on the side wall of the fixing member; The long board is wound around the support system, and the fixing piece is sleeved on the main beam; The adjusting bolt is used to adjust the distance between the fixing plate and the fixing member.

4. The drum installation device according to claim 3, characterized in that: Buffer pads are respectively arranged on the side walls of the fixing member and the fixing plate facing each other; A reinforcing plate is arranged in the fixing member, and the reinforcing plate is used to balance the force on the fixing plate.

5. The drum installation device according to claim 2, characterized in that: A hoisting assembly is arranged on the top of the top beam, and the hoisting assembly includes: a hoisting frame, a lifting lug arranged at the bottom of the hoisting frame, a drum hoisting rod arranged under the hoisting, and driving members respectively arranged on both sides of the hoisting frame, wherein: The drum suspension rod is inserted into the lifting ear, and two ends of the drum suspension rod are respectively wound around the driving member; The lifting lug is used to limit the position of the drum hanging rod; The driving member is used to control the movement of the drum suspension rod; The boiler drum hanging rod is used to hang the boiler drum to be installed.

6. The drum installation device according to claim 5, characterized in that: A pull rod is provided on the hanging frame, and the pull rod is used to reinforce the hanging frame; A base is arranged at the lower end of the hanging frame.

7. The drum installation device according to claim 1, characterized in that: A clamp is arranged on the boiler drum to be installed, and the clamp is connected to the boiler drum suspension rod.

8. A method for installing a boiler drum, characterized in that: The boiler drum to be installed is installed using the boiler drum installation device according to any one of claims 1 to 7, and the method comprises the following steps: S1: Building a support system, and installing free beams and hoisting components on the support system; S2: transporting the boiler drum to be installed to a target position away from the support system; S3: pre-treating the boiler drum to be installed that is transported to the target location, and hanging the pre-treated boiler drum to be installed on the hoisting assembly; S4: hoisting the boiler drum to be installed to the installation position of the boiler drum to be installed by the hoisting assembly.

9. The drum installation method according to claim 8, characterized in that: Pre-treating the drum to be installed comprises the following steps: Check the longitudinal center line, transverse center line and four corner horizontal marks of the drum to be installed; According to the longitudinal center line, transverse center line and four corner horizontal marks, the horizontal degree and direction angle of the boiler drum to be installed are determined.

10. The drum installation method according to claim 8, characterized in that: In step S4, the process of hoisting the drum to be installed to the installation position of the drum to be installed by the hoisting assembly includes the following steps: S41: Hanging the boiler drum to be installed on the boiler drum hanging rod of the hanging assembly; S42: driving the boiler drum to be installed to move along the main beam of the support system through the boiler drum suspension rod, and driving the free beam to move along the main beam along with the boiler drum to be installed through the crane; S43: when the boiler drum to be installed is moving along the main beam, and the boiler drum to be installed encounters the secondary beam perpendicular to the moving direction, the secondary beam is removed and the free beam is fixed at the same time; S44: the boiler drum suspension rod drives the boiler drum to be installed to move and passes through the original position of the removed secondary beam; S45: re-fixing the removed secondary beam to the main beam, and at the same time releasing the free beam from the main beam and continuing to move along the main beam following the drum to be installed; S46: Repeat steps S43-S45 until the drum to be installed reaches the installation position.

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