CN219031505U - Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station - Google Patents
Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station Download PDFInfo
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- CN219031505U CN219031505U CN202223269021.2U CN202223269021U CN219031505U CN 219031505 U CN219031505 U CN 219031505U CN 202223269021 U CN202223269021 U CN 202223269021U CN 219031505 U CN219031505 U CN 219031505U
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Abstract
The utility model belongs to the technical field of overhauling of large-scale rotating equipment of a nuclear power station, and particularly relates to a special lifting appliance for lifting a large-scale vertical centrifugal pump of the nuclear power station. The utility model can provide a fixed and reliable lifting point for equipment, eliminate the risk of cutting and breaking of the hanging strip and improve the safety of equipment lifting and transferring work; meanwhile, the functions of equipment hoisting, overturning, loading and the like can be realized, the hoisting process steps are effectively simplified, and the implementation difficulty of hoisting work is reduced.
Description
Technical Field
The utility model belongs to the technical field of overhauling of large-scale rotating equipment of a nuclear power station, and particularly relates to a special lifting appliance for lifting a large-scale vertical centrifugal pump of the nuclear power station.
Background
The condensate pump of the nuclear power station is two-loop important equipment and mainly plays a role in conveying condensate water of a condenser hot trap to the deaerator. Rated flow 2079t/h, lift 266m, total weight 19.6t.
The condensate pump is of a vertical centrifugal pump structure and is 10.2 meters in the whole process. According to the design planning of the power station, the condenser is arranged at the bottommost layer of the conventional island, and the elevation position of the lower part of the condenser is measured.
When the equipment is overhauled, the coagulation pump is required to be integrally pulled out from the pump shell and transported to an overhauling factory building, and the disassembly overhauling work is carried out. The hoisting of the equipment involves the work of hoisting, overturning and loading.
In the actual operation process, more risk points exist, and the method mainly comprises the following steps:
1. the edge of the motor bracket is sharp, the weight of the equipment body is large, the requirement on the hanging strip protection measure is high in the hoisting process, and the hanging strip is extremely easy to cut and break;
2. the edges of the condensate pump equipment are sharp and lack protection. If the suspender is adopted for binding and hoisting, the risk of scratching and splitting of the suspender exists.
3. The condensate pump lacks fixed hoisting points, and high-risk operations such as equipment overturning are difficult to develop.
Therefore, a special lifting appliance for lifting the condensate pump needs to be developed, and the problem in the current lifting operation process can be effectively solved.
Disclosure of Invention
The utility model aims to provide a special lifting appliance for lifting a large vertical centrifugal pump of a nuclear power station, which can provide a fixed and reliable lifting point for equipment, eliminate the risk of cutting and breaking of a hanging strip and improve the safety of equipment lifting and transferring work; meanwhile, the functions of equipment hoisting, overturning, loading and the like can be realized, the hoisting process steps are effectively simplified, and the implementation difficulty of hoisting work is reduced.
The technical scheme for realizing the purpose of the utility model comprises the following steps:
the utility model provides a large-scale vertical centrifugal pump hoist and mount special lifting appliance of nuclear power station, the hoist includes base, support and hoisting point, and the support is located the base top, support and base fixed connection, space and the pump group up end phase-match that base and support formed, support upper portion central point position is equipped with a hoisting point.
The support comprises a main frame and an auxiliary frame, wherein the main frame and the auxiliary frame are mutually perpendicular, the main frame is fixedly connected with the auxiliary frame, and the main frame and the auxiliary frame are fixedly connected with the base.
The number of the auxiliary frames is one, and the auxiliary frames are vertically arranged at the center of the main frame.
The number of the auxiliary frames is even, and the auxiliary frames are symmetrically arranged relative to the center position of the main frame and are respectively connected with the main frame.
The lifting appliance further comprises a shackle, the shackle is matched with the lifting point, and the shackle is arranged on the lifting point.
The shackle is an arcuate shackle.
The lifting appliance further comprises a nut and a bolt, the nut is matched with the bolt, the bolt penetrates through the through holes uniformly formed in the base along the circumferential direction, the nut is in threaded connection with the bolt, and the base of the lifting appliance is connected and fastened with the condensate pump core bag.
The lifting appliance further comprises a gasket, the gasket is located between the bolts and is matched with the bolts, and the gasket is tightly propped against the nuts and the base respectively through threaded connection of the nuts and the bolts.
The main frame is fixedly connected with the auxiliary frame through welding.
The main frame and the auxiliary frame are fixedly connected with the base through welding.
The beneficial technical effects of the utility model are as follows:
1. the special lifting tool for lifting the large vertical centrifugal pump of the nuclear power station is simple in structure and convenient to operate.
2. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station can directly lift the condensate pump, avoid arranging lifting points at two sides of the motor peep hole during lifting, reduce the time for packaging and protecting the two sides of the motor peep hole, and avoid the situation of cutting and cutting the two sides of the motor peep hole and cracking and damaging the hanging strip during maintenance work.
3. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station provided by the utility model optimizes the lifting point problem of lifting operation, and greatly reduces the difficulty of lifting operation and the risk of personnel and equipment.
4. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station can effectively ensure the safety and reliability of the lifting operation of the condensing pump.
5. The lifting appliance special for lifting the large vertical centrifugal pump of the nuclear power station can effectively improve the overhaul process of the operation of the pump, improve the overhaul efficiency of the pump and shorten the overhaul period of the pump during overhaul.
Drawings
Fig. 1 is a mounting structure diagram of a lifting appliance special for lifting a large vertical centrifugal pump of a nuclear power station, which is provided by the utility model, mounted on a condensate pump core bag;
fig. 2 is a cross-sectional view of a special lifting appliance for lifting a large vertical centrifugal pump of a nuclear power station, which is provided by the utility model, mounted on a condensate pump core bag;
fig. 3 is a perspective view of a lifting appliance special for lifting a large vertical centrifugal pump of a nuclear power station;
fig. 4 is a cross-sectional view of a special lifting appliance for lifting a large vertical centrifugal pump of a nuclear power station;
fig. 5 is a top view of a lifting appliance special for lifting a large vertical centrifugal pump of a nuclear power station;
in the figure: 1-a condensate pump core bag; 2-lifting appliance; 3-a base; 4-a bracket; 5-hanging points; 6-shackle; 7-a nut; 8-a bolt; 9-a gasket; 41-a main frame; 42-subframe.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1, the special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station provided by the utility model comprises a base 3, a bracket 4, a lifting point 5, a shackle 6, a nut 7, a bolt 8 and a gasket 9, wherein the bracket 4 is positioned above the base 3, and the bracket 4 is fixedly connected with the base 3 through welding. The base 3 is circular ring shape, and the space formed by the base 3 and the bracket 4 is matched with the upper end face of the pump set.
The bracket 4 includes a main frame 41 and a sub-frame 42, the main frame 41 and the sub-frame 42 are disposed perpendicular to each other, and the main frame 41 and the sub-frame 42 are fixedly connected by welding. In the embodiment, one sub-frame 42 may be welded perpendicularly to the center of the main frame 41, or an even number of sub-frames 42 may be symmetrically disposed with respect to the center of the main frame 41 and welded to the main frame 41, for example, as shown in fig. 3, two sub-frames 42 are symmetrically welded to one main frame 41.
The main frame 41 and the sub-frame 42 are positioned above the base 3, and the main frame 41 and the sub-frame 42 are fixedly connected with the base 3 by welding.
The center position of the upper part of the main frame 41 is provided with a lifting point 5, a shackle 6 is matched with the lifting point 5, the shackle 6 is arranged on the lifting point 5, and the lifting point 5 is matched with the shackle 6 to carry out lifting and transferring work of the condensate pump. And the lifting appliance 2 is connected with the crane through the shackle and the chain block, so as to carry out the equipment lifting, overturning, loading and other works. The shackle 6 is in this embodiment an arcuate shackle. Because the whole pump set is only provided with one hanging point 5, no additional chain block is needed to be hung for adjusting the perpendicularity of the pump set.
The base 3 evenly is equipped with the through-hole along the circumferencial direction, and the through-hole is passed to bolt 8, and packing ring 9 and nut 7 and bolt 8 assorted, packing ring 9 are located between bolt 8 and the nut 7, through the threaded connection of bolt 8 and nut 7, with the base 3 of hoist 2 and condensate pump core package 1 connection fastening. In this embodiment the bolts 8 are hex head bolts, the nuts 7 are hex nuts and the washers 9 are plain washers.
The lifting appliance 2 is rigidly connected with the pump set, no additional protective measures are needed, and the connecting bolts of the lifting appliance 2 and the pump set are fastened in place.
The utility model provides a special lifting appliance for lifting a large vertical centrifugal pump of a nuclear power station, which comprises the following specific steps:
step 1, operating a 250T crane to a condensed pump hoisting area, hanging one end of a 20T x 6M sling in a crane hook (an auxiliary hook 40T) after the sling is folded in half, connecting the other end of the sling with a special hoisting tool through an arch shackle 6, hoisting the special hoisting tool to the upper part of a pump body, adjusting the center of the crane and a hoisted pump body, placing the special hoisting tool on a pump body bracket, fastening through threaded connection of an M24 hexagon head bolt 8, a hexagon nut 7 and a plain washer 9, and confirming that all hexagon head bolts 8 are fastened;
step 2, a lifting commander below commands a lifting driver to slowly lift, after confirming that the lifting hook can be quickly lifted to a maintenance platform after the stable lifting process, the lifting commander loosens the chain block to a natural vertical state (the lifting hook is not stressed or can be removed according to the specific situation), and the pump body is stably lifted into a rotating turning-over area.
And 3, after the pump body is fallen to a proper position, a 120T auxiliary crane hook (30T) is fallen, a rubber skin is used between a first-stage impeller and a second-stage impeller of the pump body for wrapping, a sling is tightly tied, the other end of the sling is hung on the 120T auxiliary crane hook, the 120T auxiliary crane hook (30T) is slowly lifted, and meanwhile, the 250T auxiliary crane hook (40T) is slowly fallen back for leveling until the horizontal state of the pump body is suspended. The pump body is then lowered to the ground.
And 4, removing one end of a 10T 4m hanging belt in a lifting hook of a 120T crane (auxiliary hook 30T), connecting one end of a 10T 6m chain block with the other end of the 10T 4m hanging belt connected between a first-stage impeller and a second-stage impeller of a pump body, and then hanging the other end of the 10T 6m chain block on a 250T crane auxiliary hook. Slowly lifting the pump body to a certain height, and leveling the pump body through the chain block. After the pump body is leveled and stabilized, the pump body is put down to a transport vehicle and transported to a maintenance site.
And 5, reversely operating the equipment in the equipment reloading process according to the steps. In the process of reloading, in order to ensure that the equipment steadily falls to the equipment foundation, the requirement on the levelness of the flange of the pump seat is higher. At the moment, the two side hanging holes of the special lifting appliance can be used for installing and leveling the chain block. When the pump body is lifted to the upper part of the foundation, the pump body is adjusted through the chain blocks at the two sides, and after the levelness of the flange of the pump seat meets the installation requirement, the pump body is placed to the equipment foundation through a travelling crane.
The present utility model has been described in detail with reference to the drawings and the embodiments, but the present utility model is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model. The utility model may be practiced otherwise than as specifically described.
Claims (10)
1. The utility model provides a large-scale vertical centrifugal pump hoist and mount special lifting device of nuclear power station, its characterized in that, the lifting device includes base (3), support (4) and hoisting point (5), and support (4) are located base (3) top, support (4) and base (3) fixed connection, and space and pump group up end phase-match that base (3) and support (4) formed are equipped with a hoisting point (5) in support (4) upper portion central point.
2. The lifting appliance special for lifting the large vertical centrifugal pump of the nuclear power station according to claim 1, wherein the bracket (4) comprises a main frame (41) and an auxiliary frame (42), the main frame (41) and the auxiliary frame (42) are mutually perpendicular, the main frame (41) is fixedly connected with the auxiliary frame (42), and the main frame (41) and the auxiliary frame (42) are fixedly connected with the base (3).
3. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 2, wherein the number of the auxiliary frames (42) is one, and the auxiliary frames (42) are vertically arranged at the center position of the main frame (41).
4. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 2, wherein the number of the auxiliary frames (42) is even, and the auxiliary frames (42) are symmetrically arranged relative to the central position of the main frame (41) and are respectively connected with the main frame (41).
5. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 1, wherein the lifting appliance further comprises a shackle (6), the shackle (6) is matched with the lifting point (5), and the shackle (6) is arranged on the lifting point (5).
6. The special lifting appliance for lifting a large vertical centrifugal pump of a nuclear power station according to claim 5, wherein the shackle (6) is an arc shackle.
7. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 1, wherein the lifting appliance further comprises a nut (7) and a bolt (8), the nut (7) is matched with the bolt (8), the bolt (8) penetrates through holes uniformly formed in the base (3) along the circumferential direction, the nut (7) is in threaded connection with the bolt (8), and the base (3) of the lifting appliance (2) is connected and fastened with the condensate pump core bag (1).
8. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 7, wherein the lifting appliance further comprises a gasket (9), the gasket (9) is positioned between the bolt (8) and the nut (7), the gasket (9) is matched with the bolt (8), the gasket (9) is respectively tightly propped against the nut (7) and the base (3) through threaded connection between the nut (7) and the bolt (8).
9. The lifting appliance special for lifting a large vertical centrifugal pump of a nuclear power station according to claim 2, wherein the main frame (41) and the auxiliary frame (42) are fixedly connected through welding.
10. The special lifting appliance for lifting the large vertical centrifugal pump of the nuclear power station according to claim 2, wherein the main frame (41) and the auxiliary frame (42) are fixedly connected with the base (3) through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223269021.2U CN219031505U (en) | 2022-12-07 | 2022-12-07 | Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223269021.2U CN219031505U (en) | 2022-12-07 | 2022-12-07 | Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219031505U true CN219031505U (en) | 2023-05-16 |
Family
ID=86284096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223269021.2U Active CN219031505U (en) | 2022-12-07 | 2022-12-07 | Special lifting appliance for lifting large vertical centrifugal pump of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219031505U (en) |
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2022
- 2022-12-07 CN CN202223269021.2U patent/CN219031505U/en active Active
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