A dismounting tool for a vertical pipe pump

Abstract

A kind of dismounting tool of vertical pipeline pump, it is related to a pump dismounting tool, the lifting lug and lifting bar of the dismounting tool adopt welded connection;Lifting bar and stand adopt welded connection;Lifting bar is installed with stand at 120 ° angle;One end of gusset plate is welded on lifting bar, the other end is welded on stand;Bracket and stand are connected by folding link;Sliding bearing is arranged in folding link;The lower part of folding link is provided with stop block, and bracket and stop block adopt welded connection;Pump body and independent motor support are bolted, motor and independent motor support are bolted;Rotor string and pump body are bolted.The design of the dismounting tool of the utility model can ensure that there is no one-sided weight condition in hoisting process, rotor string has no risk of falling off in hoisting process, and the stress condition of the overall structure of the dismounting tool fully meets the use requirements after finite element analysis.

Description

Technical Field

[0001] This utility model relates to a pump disassembly and assembly tool, and more particularly to a disassembly and assembly tool for a vertical pipeline pump. Background Technology

[0002] In traditional vertical inline centrifugal pumps, the motor bracket is mounted on the bearing housing. When disassembling and repairing the pump, the motor must be removed first, which is a relatively complicated operation, resulting in high maintenance costs and low maintenance efficiency.

[0003] According to API 610-12th standard, OH3 type vertical pipeline centrifugal pumps (hereinafter referred to as vertical pipeline pumps) must use independent motor brackets. When repairing vertical pipeline pumps with independent motor brackets on site, it is required that the repairs be carried out without removing the motor in order to reduce costs and increase repair efficiency.

[0004] When repairing and disassembling a vertical pipeline pump with an independent motor bracket, the rotor string (mainly including rotor components, pump cover, bearing components, mechanical seal, etc.) cannot be directly lifted and pulled out because the pump has a motor on top. Therefore, during disassembly, the rotor string needs to be lifted up and completely pulled out of the pump body before being moved horizontally from the side of the independent motor bracket. If traditional disassembly and assembly methods are used, the rotor string needs to be hoisted multiple times and more people are required. There is also a certain degree of danger in the disassembly process, which is time-consuming and labor-intensive and does not achieve the effect of saving costs and increasing efficiency. Summary of the Invention

[0005] The purpose of this utility model is to provide a disassembly and assembly tool for a vertical pipeline pump. The lifting position of the tool bracket and the pump bearing body is blocked by a stop block to ensure that there is no risk of the rotor string falling off during the lifting process, whether it is moved vertically or horizontally. This can effectively avoid a series of problems caused by uneven weight distribution. The rotor string of the vertical pipeline pump with an independent motor bracket can be lifted upwards in one lifting operation, completely removed from the pump body, and then moved out from the side of the independent bracket.

[0006] The objective of this utility model is achieved through the following technical solution: A disassembly and assembly tool for a vertical pipeline pump, wherein the lifting lugs and lifting rod of the disassembly and assembly tool are welded together; the lifting rod and the upright frame are welded together; the lifting rod and the upright frame are installed at a 120° angle; one end of the stiffening plate is welded to the lifting rod, and the other end is welded to the upright frame; the bracket and the upright frame are connected by a folding connecting rod, with one bracket on each side, and the brackets on both sides are inserted into the rotor string; a sliding bearing is provided in the folding connecting rod; a stop block is provided at the lower part of the folding connecting rod, and the stop block and the bracket are welded together; the pump body is bolted to the independent motor bracket, and the motor is bolted to the independent motor bracket; the rotor string and the pump body are bolted together.

[0007] The disassembly and assembly tool for a vertical pipeline pump, wherein the lifting lug is welded to the head of the lifting rod.

[0008] The disassembly and assembly tool for a vertical pipeline pump has a handle welded to the middle of the upright frame, with one handle on each side.

[0009] The disassembly and assembly tool for a vertical pipeline pump, wherein the stop block is welded to the end of the bracket.

[0010] The advantages and effects of this utility model are: This invention improves the on-site maintenance efficiency of vertical pipeline pumps with independent motor supports and saves maintenance costs. It allows the rotor of the vertical pipeline pump with independent motor supports to be lifted upwards and completely removed from the pump body in a single hoisting operation, and then moved out from the side of the independent support.

[0011] Before lifting, the rear end of the disassembly and assembly tool bracket and the lifting position on the pump bearing body are secured with blocks to ensure that there is no risk of the rotor string falling off during lifting, whether it is moved vertically or horizontally.

[0012] The disassembly tool ensures that the position of the hoist hook and the pump shaft are on the same vertical line, effectively avoiding a series of problems caused by uneven weight distribution. The stress condition of the overall structure of the disassembly tool has been verified through finite element analysis to ensure it meets practical requirements. The disassembly tool is small in size and the bracket is foldable, making it convenient for storage, transportation, and use.

[0013] This utility model has the following features: 1. This disassembly and assembly tool can remove the rotor of a vertical pipeline pump with an independent motor bracket in a single hoisting operation, eliminating the need for multiple hoisting attempts and requiring only two people. It offers high efficiency and low cost.

[0014] 2. The design of this disassembly and assembly tool ensures that there will be no one-sided weight distribution during the hoisting process, and there is no risk of the rotor string falling off during the hoisting process. The stress condition of the overall structure of the disassembly and assembly tool has been fully met by finite element analysis.

[0015] 3. This disassembly and assembly tool has a simple structure, solid materials, and a foldable bracket, making it very convenient for storage, transportation, and use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly and disassembly tool of this utility model. Figure 2 This is a schematic diagram of the disassembly tool structure of this utility model.

[0017] Components in the diagram: 1. Crane, 2. Lifting lug, 3. Lifting rod, 4. Rib plate, 5. Frame, 6. Handle, 7. Folding connecting rod, 8. Bracket, 9. Motor, 10. Independent motor bracket, 11. Stop block, 12. Rotor string, 13. Pump body. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings.

[0019] like Figure 2 As shown, the lifting lug 2 and lifting rod 3 of this utility model are connected by welding. The lifting lug 2 is welded to the head of the lifting rod to ensure sufficient space under the disassembly tool. The lifting rod 3 and the upright frame 5 are also connected by welding. The upright frame 5 is placed vertically during use, and the lifting rod 3 forms a 120° angle with the upright frame 5 to avoid the upper motor 9. One end of the stiffening plate 4 is welded to the lifting rod 3, and the other end is welded to the upright frame 5. The stiffening plate 4 is welded at the connection point between the lifting rod 3 and the upright frame 5, at 1 / 4 of the total length of the lifting rod 3 and the upright frame 5. This allows the lifting rod 3 of the disassembly tool to withstand greater force without deformation during lifting, ensuring the strength of the disassembly tool and improving the safety factor. Handles 6 are welded to the middle of the upright frame 5, one on each side, for convenient use during transportation. The bracket 8 and the upright frame 5 are connected by a folding connecting rod 7. There is one bracket 8 on each side, and the spacing between the two brackets 8 ensures that the bracket 8 can be smoothly inserted into the corresponding position of the rotor string 12. The folding connecting rod 7 is equipped with a sliding bearing to allow the bracket 8 to fold. A stop is provided at the bottom of the folding connecting rod 7. When the disassembly and assembly tool is in use, the stop can stop the bracket 8 when it is unfolded to 90°. After the disassembly and assembly tool is used, the bracket 8 is folded upward to the handle 6. This can reduce the space occupied by the disassembly and assembly tool when it is not in use, so as to facilitate transportation and storage. The stop 11 and the bracket 8 are connected by welding. One stop 11 is welded to each side of the bracket 8, and the stop 11 is welded to the end of the bracket, so that the center of gravity is on the same vertical line as the lifting lug 2 during hoisting.

[0020] like Figure 1As shown, during disassembly and assembly, the independent motor bracket 10 is vertically installed on the foundation. The pump body 13 is bolted to the independent motor bracket 10, and the motor 9 is bolted to the independent motor bracket 10. When disassembling the vertical pipeline pump, the independent motor bracket 10, pump body 13, and motor 9 do not need to be disassembled. The rotor string 12 is bolted to the pump body 13; these bolts need to be removed when disassembling the vertical pipeline pump. The hook of the crane 1 is directly connected to the lifting lug 2 when using the disassembly and assembly tools. The lateral width design of the bracket 8 should ensure that it can be pulled out from the side of the independent motor bracket 10. When using the disassembly and assembly tools, after the bracket 8 is inserted into the corresponding position of the rotor string 12, the position of the stop block 11 is manually adjusted to prevent unilateral imbalance during hoisting and to prevent the rotor string 12 from shifting back and forth. Before dismantling the vertical pipeline pump, remove all connecting bolts between the rotor string 12 and the pump body 13. Extend the support 8 of the dismantling tool to 90°, and then connect the hook of the crane 1 to the lifting lug 2 of the dismantling tool. During pump dismantling, the crane 1, in coordination with on-site personnel, places the support 8 in the lifting position of the rotor string 12. Adjust the stop block 11 to ensure that the rotor string 12 does not become unbalanced, slide back and forth, or even fall off during the lifting process. Figure 1 The first step involves controlling the crane 1 to pull the rotor string 12 out of the pump body 13 until the lower part is completely detached from the pump body 13 in the vertical direction, as shown below. Figure 1 The second step involves controlling crane 1 to horizontally move rotor string 12 from the side of independent motor bracket 10, and then placing the rotor string in the designated position to complete disassembly. After maintenance, the pump disassembly process is reversed to reassemble the pump.

Claims

1. A disassembly and assembly tool for a vertical pipeline pump, characterized in that, The lifting lug (2) and the lifting rod (3) are connected by welding; the lifting rod (3) and the upright frame (5) are connected by welding; the lifting rod (3) and the upright frame (5) are installed at a 120° angle; one end of the stiffening plate (4) is welded to the lifting rod (3) and the other end is welded to the upright frame (5); the bracket (8) and the upright frame (5) are connected by the folding connecting rod (7), and the bracket (8) is set on each side. The brackets (8) on both sides are inserted into the rotor string (12); the folding connecting rod (7) is provided with a sliding bearing; the lower part of the folding connecting rod (7) is provided with a stop block, and the stop block (11) and the bracket (8) are connected by welding; the pump body (13) is bolted to the independent motor bracket (10), and the motor (9) is bolted to the independent motor bracket (10); the rotor string (12) and the pump body (13) are bolted together; the handle (6) is welded to the middle of the upright frame (5), and one handle is provided on each side.

2. The disassembly and assembly tool for a vertical pipeline pump according to claim 1, characterized in that, The lifting lug (2) is welded to the head of the lifting rod.

3. The disassembly and assembly tool for a vertical pipeline pump according to claim 1, characterized in that, The stop (11) is welded to the end of the bracket.

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