Bulb tubular unit runner chamber disassembling and assembling tool

Abstract

The utility model discloses a bulb tubular unit runner chamber disassembling and assembling tool which comprises an auxiliary hoisting device and a main hoisting device. The auxiliary lifting device comprises an auxiliary lifting assembly and an auxiliary lifting rope, the auxiliary lifting assembly is used for winding and unwinding the auxiliary lifting rope, and the auxiliary lifting rope is connected with an auxiliary lifting lug in the center of the flange face on one side of the top of the lower half body; the main hoisting device moves in the transverse and longitudinal directions above the runner chamber, the main hoisting device comprises a main hoisting assembly and a main hoisting rope, the main hoisting device is used for winding and unwinding the main hoisting rope, and the main hoisting rope is used for hoisting the upper half body or being matched with the auxiliary hoisting device to turn over and hoisting the lower half body. According to the utility model, the main hoisting device and the auxiliary hoisting device are designed, the auxiliary lifting lug, the first lifting lug and the second lifting lug on the lower half body of the runner chamber are matched for use, so that the lower half body can be quickly overturned, the paddles and the runner do not need to be disassembled when the lower half body is disassembled, the overall workload is small, and the used time is shorter.

Description

Technical Field

[0001] This utility model belongs to the field of water turbine maintenance technology, specifically a disassembly and assembly tool for the runner chamber of a bulb-type turbine unit. Background Technology

[0002] A bulb turbine is a horizontal-shaft turbine, meaning the water flows essentially along a horizontal axis within the flow channel. It is primarily suitable for heads of 1–25 m and is a specialized type of turbine for low-head, high-flow-rate hydropower stations. Because the water flows almost axially within the flow channel without turning, the unit's water throughput and hydraulic efficiency are improved.

[0003] During operation, bulb turbine runners are prone to cavitation erosion. To ensure safe and stable operation, severely damaged bulb turbine runners require runner replacement. Conventional methods for replacing the runner of a bulb turbine runner involve removing the blades and runner before replacement. This process requires depressurization, oil drainage, removal of blades and runner body, and replacement of blade seals, resulting in a large workload and lengthy operation time.

[0004] A method for dismantling the turbine chamber of a generator set is disclosed in patent publication number CN116876888B. This method combines manual dismantling technology and high-pressure water jet technology. The turbine chamber is divided into three layers. Based on the mutual constraints between each dismantling unit, object, and unit, the dismantling steps for each layer are proposed according to different technologies. This construction method can improve the construction safety to a certain extent compared with the traditional construction method. However, the dismantling and replacement of the turbine chamber using this method requires the removal of the turbine body and blades, which results in a large workload and a long time. Utility Model Content

[0005] The purpose of this utility model is to provide a disassembly and assembly tooling for the turbine chamber of a bulb-type turbine generator set, so as to solve the following technical problems mentioned in the background art:

[0006] In the existing technology, replacing the bulb in a cross-flow turbine unit requires removing the blades and the turbine itself before replacing the turbine chamber, which involves a large workload and takes a long time.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A bulb turbine runner disassembly and assembly fixture is provided for disassembling and assembling the upper and lower halves of the runner chamber. The fixture includes an auxiliary hoisting device and a main hoisting device. The auxiliary hoisting device includes an auxiliary hoisting assembly and an auxiliary hoisting rope. The auxiliary hoisting assembly is used to raise and lower the auxiliary hoisting rope, and the auxiliary hoisting rope is connected to an auxiliary lifting lug at the center of the flange face on one side of the top of the lower half. The main hoisting device moves in the horizontal and vertical directions above the runner chamber. The main hoisting device includes a main hoisting assembly and a main hoisting rope. The main hoisting device is used to raise and lower the main hoisting rope, and the main hoisting rope is used to hoist the upper half or, in conjunction with the auxiliary hoisting device, to rotate and hoist the lower half.

[0009] Furthermore, the auxiliary lifting assembly includes a winch, an auxiliary beam, a guide pulley, and a pulley block; wherein, the auxiliary beam is located directly above the auxiliary lifting lug, the guide pulley is located at the bottom of the auxiliary beam, the auxiliary lifting rope is connected to the pulley block, and the winch's pull rope passes around the guide pulley and is connected to the pulley block.

[0010] Furthermore, the auxiliary beams include several I-beams, which are welded together.

[0011] Furthermore, the bottom of the auxiliary lifting rope is connected to an unloading port, and the auxiliary lifting rope is connected to the auxiliary lifting lug through the unloading port.

[0012] Furthermore, the auxiliary lugs are detachably connected to the lower body.

[0013] Furthermore, there are two auxiliary lugs.

[0014] Furthermore, the main lifting components include a bridge crane.

[0015] Furthermore, the lower half of the body has a first lug fixed to the front two sides and a second lug fixed to the rear two sides.

[0016] Furthermore, there are two main lifting ropes. One main lifting rope is connected to the first lifting lug by a single double strand, and the other main lifting rope is connected to the second lifting lug by a single double strand.

[0017] Furthermore, an auxiliary hoist is also installed between the main hoisting device and the auxiliary hoisting device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model is designed with a main hoisting device and an auxiliary hoisting device. By using the auxiliary lifting lugs, the first lifting lug and the second lifting lug on the lower half of the wheel chamber, the lower half can be quickly rotated. When disassembling and assembling the lower half, it is not necessary to remove the blades and the wheel. The overall workload is small and the time is short. Attached Figure Description

[0020] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0021] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0022] Figure 3 This is the third schematic diagram of the overall structure of this utility model;

[0023] Figure 4 This is one of the schematic diagrams of the lower half structure of this utility model;

[0024] Figure 5 This is the second schematic diagram of the lower half structure of this utility model.

[0025] The markings in the diagram are: 1-Main hoisting assembly, 2-Auxiliary hoist, 3-Auxiliary beam, 4-Auxiliary hoisting assembly, 5-Wind, 6-Guide pulley, 7-Pulley block, 8-Auxiliary hoisting rope, 9-Auxiliary lifting lug, 10-Lower body, 11-First lifting lug, 12-Main hoisting rope, 13-Second lifting lug. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] A bulb turbine runner disassembly and assembly fixture is provided for disassembling and assembling the upper and lower halves 10 of the runner chamber. The fixture includes an auxiliary hoisting device and a main hoisting device. The auxiliary hoisting device includes an auxiliary hoisting assembly 4 and an auxiliary hoisting rope 8. The auxiliary hoisting assembly 4 is used to raise and lower the auxiliary hoisting rope 8. The auxiliary hoisting rope 8 is connected to an auxiliary lifting lug 9 at the center of the flange face on one side of the top of the lower half 10. The main hoisting device moves in the horizontal and vertical directions above the runner chamber. The main hoisting device includes a main hoisting assembly 1 and a main hoisting rope 12. The main hoisting device is used to raise and lower the main hoisting rope 12. The main hoisting rope 12 is used to hoist the upper half or, in conjunction with the auxiliary hoisting device, to flip and hoist the lower half 10.

[0029] The upper and lower halves of the turbine chamber 10 are detachably connected. When assembling and hoisting the upper and lower halves 10, the connecting parts between them must first be removed. Specifically, the upper half is lifted directly upwards using the main hoisting assembly 1 and the main hoisting rope 12. The lower half 10 cannot be lifted directly upwards; doing so would be obstructed by the intermediate rotating blades. Therefore, the lower half 10 needs to be moved to the original position of the upper half before hoisting. Specifically, during use, the auxiliary hoisting rope 8 is connected to the auxiliary lifting lug 9 on the lower half 10; the main hoisting rope 12 is connected to the first lifting lug 11 and the second lifting lug 13 on the lower half 10. At this time, the auxiliary hoisting device is used to pull the left side of the lower half 10, and the main hoisting device is used to pull the right side of the lower half 10. In actual operation, the left and right sides are not fixed; it is sufficient to ensure that the auxiliary hoisting device and the main hoisting device are located on opposite sides of the lower half 10. Subsequently, the auxiliary lifting assembly 4 works synchronously with the main lifting assembly 1. The main lifting assembly 1 winds up the main lifting rope 12, while the auxiliary lifting assembly 4 simultaneously releases the auxiliary lifting rope 8. During this process, the lower half 10 will tilt and flip. In actual operation, this step needs to be repeated multiple times. Each time, the main lifting assembly 1 winds up only 5-10cm of the main lifting rope 12, and the auxiliary lifting assembly 4 releases only 5-10cm of the auxiliary lifting rope 8. By repeating this operation multiple times, the lower half 10 is flipped, ensuring its stable flip and preventing it from impacting the components inside the wheel chamber during the flipping process. For the main lifting device, during the winding of the main lifting rope 12, the main lifting assembly 1 needs to move towards the auxiliary lifting assembly 4 to ensure that the center position of the lower half 10 does not change during the flipping process, thus preventing the lower half 10 from impacting the components inside the wheel chamber. Furthermore, in a preferred embodiment, during the flipping of the lower half 10, an auxiliary hoist 2 can be connected externally. The auxiliary hoist 2 pulls the lower half 10 to fine-tune its position, thereby ensuring the stability of the lower half 10 and enabling it to flip stably. After flipping the lower half 10, the auxiliary lifting rope 8 is removed. The steps for loading the new lower half 10 are the reverse of the steps for disassembling the lower half 10. This design allows for stable and rapid disassembly and assembly of the upper and lower halves 10 of the impeller chamber, solving the problems of traditional methods that require disassembling the impeller body and blades, depressurizing, draining oil, and replacing blade seals. This results in a smaller overall workload and shorter time.

[0030] In a preferred embodiment, the auxiliary lifting assembly 4 includes a winch 5, an auxiliary beam 3, a guide pulley 6, and a pulley block 7. The auxiliary beam 3 is located directly above the auxiliary lifting lug 9, the guide pulley 6 is located at the bottom of the auxiliary beam 3, the auxiliary lifting rope 8 is connected to the pulley block 7, and the winch 5's pull rope passes over the guide pulley 6 and connects to the pulley block 7. The winch 5 is the core device of the auxiliary lifting assembly 4, and its main function is to adjust the length of the auxiliary lifting rope 8 by winding and releasing the rope, thereby controlling the lifting and tilting process of the lower body 10. Through electric or manual control, the winch 5 can precisely control the winding and releasing of the rope, ensuring that the lower body 10 tilts at a stable and controllable speed and angle. The auxiliary beam 3 is located directly above the auxiliary lifting lug 9, serving as the support structure for the entire system. It effectively disperses the pressure applied to the lifting lug during the lifting process, enhances lifting stability, and provides support for the guide pulley 6, ensuring the normal operation of other components. The pulley block 7 is connected to the auxiliary lifting rope 8, utilizing mechanical advantages to improve lifting efficiency. The use of pulley block 7 reduces the required pulling force, thus reducing the force required for the operator to use winch 5 to reel in and release the rope, thereby improving the convenience and safety of the work. Through this design, the auxiliary lifting assembly 4 not only achieves precise control of the lower body 10, but also improves the overall lifting efficiency and safety, significantly reduces the burden of manual operation, ensures the stability of the lower body 10 during disassembly and assembly, and avoids collisions with components inside the wheel chamber.

[0031] In a preferred embodiment, the auxiliary beam 3 comprises several I-beams welded together. I-beams are stable structural profiles with excellent load-bearing capacity and stability. The use of multiple I-beams in the design of the auxiliary beam 3 increases the overall strength and stiffness, effectively supporting the weight and power applied by the hoisting device. The combination of multiple I-beams allows the structure to distribute the load evenly in different directions, effectively preventing deformation or damage due to excessive local pressure. The welded connections between the I-beams enhance the integrity of the overall structure and effectively improve the overall load-bearing capacity.

[0032] In a preferred embodiment, the bottom of the auxiliary lifting rope 8 is connected to an unloading port, through which the auxiliary lifting lug 9 is connected. The unloading port at the bottom of the auxiliary lifting rope 8 allows for easy connection and disconnection of the rope to the auxiliary lifting lug 9 of the lower body 10 structure. The unloading port provides a quick attachment point for the auxiliary lifting rope 8, enabling rapid connection or disconnection during lifting and dismantling operations, significantly improving operational efficiency.

[0033] In a preferred embodiment, the auxiliary lifting lug 9 is detachably connected to the lower body 10. This design allows the auxiliary lifting lug 9 to be easily connected to or disconnected from the lower body 10 when needed, without the need for special tools or complex operations. This detachable connection allows operators to quickly perform corresponding lifting or dismantling work, improving work efficiency. Specifically, the auxiliary lifting lug 9 is connected to the lower body 10 via a screw.

[0034] In a preferred embodiment, two auxiliary lifting lugs 9 are provided. By providing two auxiliary lifting lugs 9, a more balanced and symmetrical force transmission system can be formed during the lifting process. The two auxiliary lifting lugs 9 can distribute the weight of the lower half 10 more evenly, thereby reducing tilting or instability that may be caused by excessive force on one side. The bridge crane can move freely within the working area and can quickly change the lifting position to adapt to different work requirements.

[0035] In a preferred embodiment, the main lifting assembly 1 includes a bridge crane. The bridge crane is designed to withstand heavy loads, making it suitable for lifting heavy equipment, such as the upper and lower halves 10 of a bulb-type air conditioning unit. During assembly and disassembly, it can safely and stably lift large weights, ensuring smooth operation. Typically, the bridge crane used is a workpiece-mounted crane.

[0036] In a preferred embodiment, the lower half 10 has a first lifting lug 11 fixed to the front two sides and a second lifting lug 13 fixed to the rear two sides.

[0037] In a preferred embodiment, two main lifting ropes 12 are provided. One main lifting rope 12 is connected to the first lifting lug 11 via a single double strand, and the other main lifting rope 12 is connected to the second lifting lug 13 via a single double strand. The design of the first lifting lug 11 and the second lifting lug 13 increases the connection points between the main lifting device and the lower body 10, ensuring the stability of the lower body 10 during the lifting process and ensuring that the lower body 10 can be stably rotated.

[0038] In a preferred embodiment, an auxiliary hoist 2 is also provided between the main hoisting device and the auxiliary hoisting device. During the hoisting of the lower half 10, the position of the lower half 10 may need to be fine-tuned due to various factors such as center of gravity shift and accessory interference. The auxiliary hoist 2 can provide fine lifting adjustments, allowing operators to precisely control the height and angle of the lower half 10 to ensure its correct position during hoisting. This function is particularly important during installation and docking, effectively avoiding assembly difficulties or damage risks caused by improper positioning.

[0039] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for disassembling and assembling the runner chamber of a bulb-type turbine generator set, used for disassembling and assembling the upper half and lower half (10) of the runner chamber respectively, characterized in that: The disassembly and assembly tooling for the runner chamber of the bulb turbine includes auxiliary hoisting equipment and main hoisting equipment; The auxiliary hoisting device includes an auxiliary hoisting assembly (4) and an auxiliary hoisting rope (8). The auxiliary hoisting assembly (4) is used to retract and extend the auxiliary hoisting rope (8). The auxiliary hoisting rope (8) is connected to the auxiliary lifting lug (9) at the center of the flange face on one side of the top of the lower half (10). The main hoisting device moves in the horizontal and vertical directions above the wheel chamber. The main hoisting device includes a main hoisting assembly (1) and a main hoisting rope (12). The main hoisting device is used to raise and lower the main hoisting rope (12). The main hoisting rope (12) is used to hoist the upper half or to cooperate with the auxiliary hoisting device to flip and hoist the lower half (10).

2. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: The auxiliary hoisting assembly (4) includes a winch (5), an auxiliary beam (3), a guide pulley (6), and a trolley block (7); wherein, the auxiliary beam (3) is located directly above the auxiliary lifting lug (9), the guide pulley (6) is located at the bottom of the auxiliary beam (3), the auxiliary hoisting rope (8) is connected to the trolley block (7), and the pull rope of the winch (5) passes around the guide pulley (6) and is connected to the trolley block (7).

3. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 2, characterized in that: The auxiliary beam (3) includes several I-beams, which are welded together.

4. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: The bottom of the auxiliary lifting rope (8) is connected to the unloading port, and the auxiliary lifting rope (8) is connected to the auxiliary lifting lug (9) through the unloading port.

5. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: The auxiliary lug (9) is detachably connected to the lower body (10).

6. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: There are two auxiliary lugs (9).

7. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: The main hoisting assembly (1) includes a bridge crane.

8. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 7, characterized in that: The lower half (10) has a first lug (11) fixed to the front two sides and a second lug (13) fixed to the rear two sides.

9. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 8, characterized in that: There are two main lifting ropes (12). One main lifting rope (12) is connected to the first lifting lug (11) by a single double strand, and the other main lifting rope (12) is connected to the second lifting lug (13) by a single double strand.

10. The disassembly and assembly fixture for the runner chamber of a bulb-type turbine generator set according to claim 1, characterized in that: An auxiliary hoist (2) is also installed between the main hoisting device and the auxiliary hoisting device.

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