Steam turbine generator stator hoisting device

Abstract

This utility model relates to the field of hoisting device technology, specifically a hoisting device for a steam turbine generator stator, including a trolley, a spreader beam, and a hook set at the bottom of the spreader beam. Distribution beams are fixedly connected to both ends of the spreader beam, forming an I-shape. Sliding holes are provided at both ends of the distribution beams, with steel strands slidably connected within the holes. The top of the steel strands is fixedly connected to the trolley, and a hydraulic lifting device is also connected to the steel strands, located below the distribution beams. The spreader beam and distribution beams form an I-shape, with steel strands and hydraulic lifting devices positioned at the four corners of the I-shape, lifting the spreader beam from four directions, resulting in greater stability, reduced swaying during ascent, and prevention of the generator stator falling.

Description

Technical Field

[0001] This utility model relates to the field of hoisting device technology, specifically a hoisting device for a steam turbine generator stator. Background Technology

[0002] Driven by the national energy strategy, three 80 GW coal-fired power projects have been planned in China. The accelerated approval and construction of these projects will play an important role in my country's energy security and transformation. Thermal power units have formed a development pattern of large capacity, high parameters, and high efficiency, and are gradually developing towards high efficiency, energy saving, cleanliness, environmental protection, and intelligence. The weight and size of large equipment such as generator stators have also increased, and the width of turbine hall space has gradually narrowed.

[0003] The increased weight and size of the generator stator, coupled with the narrowing of the turbine hall space, makes the installation of the generator stator difficult. The challenge lies in how to stably control the rise of the generator stator, reduce swaying during the rise, and prevent the generator stator from falling. Utility Model Content

[0004] The main objective of this invention is to provide a turbine generator stator hoisting device to solve the problem in the prior art of how to stably control the rise of the generator stator during hoisting, reduce swaying during the rise, and prevent the generator stator from falling.

[0005] To achieve the above objectives, this utility model provides a turbine generator stator hoisting device, including a trolley, a spreader beam, and a hook set at the bottom of the spreader beam. Distribution beams are fixedly connected to both ends of the spreader beam, and the spreader beam and distribution beams form an I-shape. Sliding holes are provided at both ends of the distribution beam, and steel strands are slidably connected in the sliding holes. The trolley is fixedly connected to the top of the steel strands, and a hydraulic lifting device is also connected to the steel strands, which is located below the distribution beam.

[0006] Furthermore, the hydraulic lifting device includes a hydraulic jack, a lower clamp fixedly connected to the bottom of the hydraulic jack cylinder, and an upper clamp connected to the top of the piston rod of the hydraulic jack.

[0007] Furthermore, a pointer-type level and an arc-shaped indicator strip are fixedly connected to the front side of the spreader beam. The arc-shaped indicator strip is located above the pointer-type level; the middle of the arc-shaped indicator strip is green, and the two ends are red.

[0008] Furthermore, both ends of the spreader beam are provided with U-shaped grooves with upward openings, and connectors are inserted into the U-shaped grooves. Locking pins are inserted into the connectors and the spreader beam. A second U-shaped groove is provided on the top of the connector, and a distribution beam is inserted into the second U-shaped groove. Locking pins are inserted into the connector and the distribution beam.

[0009] Furthermore, an anti-disengagement plate is hinged to the hook shank, and a torsion spring is installed between the anti-disengagement plate and the hook shank.

[0010] This utility model uses a spreader beam and a distribution beam to form an I-shape. Steel strands and hydraulic lifting devices are set at the four corners of the I-shape to lift the spreader beam from four directions, which enhances stability, reduces swaying during the ascent, and prevents the generator stator from falling off.

[0011] This invention places a hydraulic lifting device below the distribution beam. The hydraulic lifting device pushes the distribution beam from below, and the hydraulic lifting device moves upward gradually while the steel strand remains stationary, thus occupying less space and saving more space.

[0012] This utility model, by setting a pointer-type level and an arc-shaped indicator strip, can conveniently and quickly confirm whether the spreader beam is level; by setting a connector, it can quickly realize the installation and disassembly of the spreader beam and the distribution beam, and facilitate the transportation of the spreader beam and the distribution beam after disassembly; by setting an anti-detachment plate, it can prevent the lifting rope from falling off the hook during the transportation process. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0014] Figure 1 This is a schematic diagram of the turbine generator stator hoisting device in the embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of the spreader beam and the distribution beam in the embodiment;

[0016] Figure 3 This is a schematic diagram of the hydraulic lifting device in the embodiment;

[0017] Figure 4 This is a schematic diagram of the pointer-type level and hook in the embodiment;

[0018] Figure 5 This is a schematic diagram of the structure at the connector in the embodiment;

[0019] Figure 6 This is a schematic diagram of the generator stator structure in the embodiment;

[0020] In the diagram: 1. Crane; 2. Spreader beam; 201. U-shaped channel one; 3. Hook; 4. Distribution beam; 401. Sliding hole; 5. Steel strand; 6. Hydraulic lifting device; 601. Hydraulic jack; 602. Lower clamp; 603. Upper clamp; 7. Pointer level; 8. Arc-shaped indicator strip; 801. Green indicator strip; 802. Red indicator strip; 9. Connecting parts; 10. Locking pin one; 11. Locking pin two; 12. Anti-disengagement plate; 13. Torsion spring; 14. Generator stator; 15. Connecting column. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a turbine generator stator hoisting device is provided, including two trolleys 1, one spreader beam 2, and a hook 3 set at the bottom of the spreader beam 2. The two ends of the spreader beam 2 are fixedly connected to the distribution beam 4, and the spreader beam 2 and the distribution beam 4 form an I-shape. The two ends of the distribution beam 4 are provided with sliding holes 401, and steel strands 5 are slidably connected in the sliding holes 401. The top of the steel strands 5 is hooked to the hanging plate on the trolley 1, and a hydraulic lifting device 6 is also connected to the steel strands 5. The hydraulic lifting device 6 is located below the distribution beam 4.

[0023] like Figure 6 As shown, two lifting posts 15 are provided on each of the left and right sides of the generator stator 14. The wire rope is attached to the hook 3, and then the wire rope is tied to each lifting post 15 to achieve the connection of the generator stator 14.

[0024] The spreader beam and distribution beam form an I-shape. Steel strands and hydraulic lifting devices are installed at the four corners of the I-shape to lift the spreader beam from four directions, which enhances stability, reduces swaying during the ascent, and prevents the generator stator from falling.

[0025] By placing the hydraulic lifting device below the distribution beam, the hydraulic lifting device pushes the distribution beam upward from below, and the hydraulic lifting device gradually moves upward while the steel strands remain stationary, thus occupying less space and saving more space.

[0026] The hydraulic lifting device 6 includes a hydraulic jack 601, a lower clamp 602 fixedly connected to the bottom of the cylinder of the hydraulic jack 601, and an upper clamp 603 fixedly connected to the top of the piston rod of the hydraulic jack 601.

[0027] The lifting steps of the hydraulic lifting device 6 are as follows:

[0028] S1. The lower clamp 602 clamps the steel strand 5, the upper clamp 603 releases the steel strand 5, and the piston rod of the hydraulic jack 601 drives the upper clamp 603 to lift upward, which lifts the distribution beam 4 upward, so that the spreader beam 2 drives the generator stator 14 to lift upward.

[0029] S2, the upper clamp 603 clamps the steel strand 5, the lower clamp 602 releases the steel strand 5, and the cylinder of the hydraulic jack 601 moves upward, causing the piston rod to retract back into the cylinder.

[0030] S3. Repeat steps S1 and S2 to gradually lift the distribution beam 4 upwards, so that the spreader beam 2 drives the generator stator 14 to gradually rise upwards.

[0031] like Figure 4 As shown, in some embodiments, a pointer-type level 7 and an arc-shaped indicator strip 8 are fixedly connected to the front side of the carrying pole beam 2. The arc-shaped indicator strip 8 is located above the pointer-type level 7. The middle of the arc-shaped indicator strip 8 is a green indicator strip 801, and the two ends are red indicator strips 802. By setting the pointer-type level 7 and the arc-shaped indicator strip 8, it is possible to conveniently and quickly confirm whether the carrying pole beam 2 is horizontal. When the pointer of the pointer-type level 7 points to the green indicator strip 801, it indicates that the carrying pole beam 2 is in a horizontal state.

[0032] like Figure 5 As shown, in some embodiments, both ends of the spreader beam 2 are provided with U-shaped grooves 201 with openings facing upwards. A connector 9 is inserted into the U-shaped groove 201. Locking pins 10 are inserted into the connector 9 and the spreader beam 2, and the locking pins 10 can lock the connector 9 onto the spreader beam 2. A second U-shaped groove is provided at the top of the connector 9. A distribution beam 4 is inserted into the second U-shaped groove. Locking pins 21 are inserted into the connector 9 and the distribution beam 4, and the locking pins 211 can lock the connector 9 and the distribution beam 4. By setting the connectors, the installation and disassembly of the spreader beam and the distribution beam can be quickly realized, and it is also beneficial to the transportation of the spreader beam and the distribution beam after disassembly.

[0033] like Figure 6 As shown, in some embodiments, an anti-detachment plate 12 is hinged to the hook shank of the hook 3, and a torsion spring 13 is provided between the anti-detachment plate 12 and the hook shank of the hook 3; by providing the anti-detachment plate, the lifting rope can be prevented from falling off the hook during the transportation process.

[0034] The process of hoisting the turbine generator stator is as follows:

[0035] First, connect the two 130t overhead cranes for hoisting in parallel, and install the steel strand 5, hydraulic lifting device 6, and distribution beam 4 in place;

[0036] Next, install the spreader beam 2 and the distribution beam 4, and use the hydraulic lifting device 6 to slowly lift the spreader beam 2;

[0037] Then, after the hook 3 is about 500mm off the ground, adjust the height of both sides of the spreader beam 2 to keep it horizontal;

[0038] Next, a φ96mm steel wire rope is suspended on the hook 3 to continue lifting the spreader beam 2; after the generator stator 14 enters through the hoisting hole of the turbine hall, the center position of the generator stator 14 is adjusted by the transport vehicle to be in the hoisting center position, and the φ96mm steel wire rope is looped on the four hoisting columns 15 of the generator stator 14 respectively.

[0039] Finally, after all preparations are completed, a comprehensive inspection is carried out. It is required that the overhead crane 1 is safe and reliable, the spreader beam 2 is level, and each important part is monitored by a dedicated person, and all monitoring personnel are in place. Trial lifting begins. During the trial lifting, the levelness of the spreader beam 2 is confirmed to ensure that the spreader beam 2 is lifted horizontally. After everything is correct, the generator stator 14 is officially lifted into place.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hoisting device for a steam turbine generator stator, comprising a travelling crane (1), a pole beam (2) and a hook (3) arranged at the bottom of the pole beam (2), characterized in that, The two ends of the spreader beam (2) are fixedly connected to the distribution beam (4), and the spreader beam (2) and the distribution beam (4) form an I-shape; the two ends of the distribution beam (4) are provided with sliding holes (401), and steel strands (5) are slidably connected in the sliding holes (401); the top of the steel strands (5) is fixedly connected to the crane (1), and a hydraulic lifting device (6) is also connected to the steel strands (5), and the hydraulic lifting device (6) is located below the distribution beam (4).

2. The steam turbine generator stator hoisting apparatus of claim 1 wherein, The hydraulic lifting device (6) includes a hydraulic jack (601), a lower clamp (602) fixedly connected to the bottom of the cylinder of the hydraulic jack (601), and an upper clamp (603) connected to the top of the piston rod of the hydraulic jack (601).

3. The steam turbine generator stator hoisting apparatus of claim 1 wherein, The front side of the flat beam (2) is fixedly connected to a pointer level (7) and an arc-shaped indicator strip (8). The arc-shaped indicator strip (8) is located above the pointer level (7). The middle of the arc-shaped indicator strip (8) is a green indicator strip (801), and the two ends are red indicator strips (802).

4. The steam turbine generator stator hoist of claim 1 wherein, The two ends of the flat beam (2) are provided with U-shaped grooves (201) with openings facing upwards. A connector (9) is inserted into the U-shaped groove (201). A locking pin (10) is inserted into the connector (9) and the flat beam (2). A U-shaped groove (2) is provided at the top of the connector (9). A distribution beam (4) is inserted into the U-shaped groove (2). A locking pin (11) is inserted into the connector (9) and the distribution beam (4).

5. The turbine generator stator hoisting device as described in claim 1, characterized in that, The hook (3) has an anti-detachment plate (12) hinged at the hook handle, and a torsion spring (13) is provided between the anti-detachment plate (12) and the hook handle of the hook (3).

Images