CN213771194U - Synchronous lifting device for top cover of water pump turbine - Google Patents
Synchronous lifting device for top cover of water pump turbine Download PDFInfo
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- CN213771194U CN213771194U CN202022976072.3U CN202022976072U CN213771194U CN 213771194 U CN213771194 U CN 213771194U CN 202022976072 U CN202022976072 U CN 202022976072U CN 213771194 U CN213771194 U CN 213771194U
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- top cover
- lifting device
- pump turbine
- hydraulic
- synchronous lifting
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a synchronous lifting device for a water pump turbine top cover, which comprises four sets of hydraulic lifting components arranged on the top cover, a pump station, a control valve group, a displacement sensor, a pressure sensor and a controller; each set of hydraulic lifting assembly comprises a hydraulic oil cylinder, a fixed suspension rod, a movable suspension rod, a supporting rod and a supporting seat; the supporting rod is detachably connected below the top cover; the supporting seat is detachably connected below the supporting rod. The utility model is integrated by a hydraulic lifting component, a pump station, a control valve group, a displacement sensor, a pressure sensor and a controller; by using the utility model, generator components such as a generator rotor and the like do not need to be dismounted and hung, equipment involved in unit maintenance is greatly reduced, and the workload of top cover lifting is reduced; need not to dismantle the generator, reduce the harm to the generator, just the utility model discloses a controller control, synchronous promotion precision is far above the bridge crane and lifts by crane, can fall to minimum with the damage of equipment such as generators.
Description
Technical Field
The utility model relates to a hydraulic turbine operation maintenance device, especially a hydraulic turbine top cap synchronous lifting device.
Background
In the process of installing and overhauling a water pump turbine of a pumped storage power station, part of work needs to integrally lift the top cover to a certain height. The top cover is arranged in a machine pit of the water turbine, the upper part of the top cover is provided with a water turbine rotor which is also arranged in the machine pit, and a certain distance is arranged between the water turbine rotor and the water turbine rotor, so that the top cover can be conveniently lifted for maintenance.
However, the traditional top cover lifting method needs to lift the top cover by using a bridge crane and then suspend the top cover in a machine pit through a screw; because the rotor (the rotor of the water turbine) is arranged on the upper part of the top cover, the rotor must be firstly lifted out of a machine pit to carry out top cover lifting operation by using a bridge crane. When the mode is adopted for maintenance, generator components such as a generator hood, an upper frame, a rotor and the like need to be disassembled and hoisted out (because the generator components are positioned above the top cover, the top cover is prevented from being hoisted by a bridge crane), the related equipment is many, and the workload is large; by adopting the mode, the generator needs to be disassembled, the influence on the performance and the service life of the generator is large, and the generator is easy to damage; by adopting the mode, a large amount of manpower and material resources are needed, the overhaul period is long, and the economic benefit is poor.
Therefore, the traditional water pump turbine top cover lifting method has the problems of more related equipment, easy damage to the generator and poor economic benefit, and is difficult to meet the requirements of modern unit maintenance on equipment safety, civilized construction and strict control of the construction period.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a synchronous hoisting device of pump turbine top cap. The utility model has the advantages of it is few to relate to equipment, is difficult for causing the generator impaired, and economic benefits is better, can satisfy the needs that modernized unit overhauld equipment safety, civilized construction, strict control time limit for a project.
The technical scheme of the utility model: a synchronous lifting device for a water pump turbine top cover comprises four sets of hydraulic lifting components arranged on the top cover, a set of pump station providing a hydraulic power source, a set of control valve bank realizing system logic control and precision control, four sets of displacement sensors for acquiring displacement signals, four sets of pressure sensors for acquiring pressure signals and a set of controller for realizing data acquisition, processing, instruction output and human-computer interaction; each set of hydraulic lifting assembly comprises a hydraulic oil cylinder arranged on the top cover, a fixed suspension rod, two movable suspension rods, one or more support rods and one or more support seats, wherein the two movable suspension rods are sequentially connected and respectively connected with the fixed suspension rod and the hydraulic oil cylinder; the supporting rod is detachably connected below the top cover; the supporting seat is detachably connected below the supporting rod.
In the synchronous lifting device for the top cover of the pump turbine, the four sets of hydraulic lifting components are arranged on four symmetrical points of the top cover.
In the synchronous lifting device for the water pump turbine top cover, the pump station provides a hydraulic power source; the control valve group, the displacement sensor, the pressure sensor and the controller are used as a system control part; the hydraulic oil cylinder is used as an actuating mechanism to lift the whole top cover.
In the synchronous lifting device for the top cover of the pump turbine, the two ends of each hydraulic oil cylinder are provided with safety valves, and the safety valves can be used for single-point mechanical protection of overload caused by uneven stress.
In the synchronous lifting device for the water pump turbine top cover, the pump station comprises a radiator, a sub-control box and a three-position four-way electromagnetic directional valve; the three-position four-way electromagnetic directional valve can lift and lower the full-scale hydraulic oil cylinder; the sub-control box can realize remote synchronous operation and local manual operation, when the normal synchronous jacking is carried out, the remote upper computer control is adopted, the whole system is synchronously operated, when the single-point sub-control system needs to move, the local operation is selected, and the independent action of the control area can be realized through the button; the radiator can avoid performance influence caused by overhigh temperature in long-term work.
In the synchronous lifting device for the top cover of the water pump turbine, the control valve group comprises an electromagnetic two-position two-way ball valve group, a throttle valve, a balance valve and four two-position three-way electromagnetic valves; the electromagnetic two-position two-way ball valve group and the throttle valve are controlled together to control the action of the hydraulic oil cylinder, and the action of the hydraulic oil cylinder is always controlled by high-frequency opening and closing of the two-position two-way valve, so that synchronous action is realized; the throttle valve can ensure that the hydraulic flow has a stable and proper flow rate and can properly adjust the descending speed; the balance valve is arranged, so that the same hydraulic oil cylinders with different quantities can be synchronized in the same system by adjusting the pressure of the balance valve, and the descending synchronization precision and stability can be further improved; the control valve group adopts a modular design, and is extremely convenient to expand and maintain.
In the synchronous lifting device for the water pump turbine top cover, the controller, the pressure sensor and the displacement sensor form double closed-loop control.
In the synchronous lifting device for the pump turbine top cover, the fixed hanger rod and the movable hanger rod are connected in a locking mode of the turnbuckles and the nuts.
In the synchronous lifting device for the top cover of the water pump turbine, the fixed suspender penetrates through the unit foundation, and a fastening nut positioned above the unit foundation is arranged at the top of the fixed suspender; and a base plate is arranged between the handle nut and the unit foundation.
In the synchronous lifting device for the top cover of the water pump turbine, a plurality of thread grooves are uniformly formed in the bottom of the top cover; and the top of each support rod is provided with an external thread corresponding to the thread groove.
In the synchronous lifting device for the water pump turbine top cover, the bottom of each hydraulic oil cylinder is connected with a connecting plate through a connecting pin; the bottom of the connecting plate is connected with the top cover; a plurality of connecting bolts which penetrate through the connecting plate and are connected with the top cover are arranged on the connecting plate; and the upper part of each connecting bolt is provided with a connecting nut.
Compared with the prior art, the top cover is lifted along the movable suspender by the hydraulic oil cylinder through the four sets of hydraulic lifting components arranged on the top cover and the matched pump station, control valve group, displacement sensor, pressure sensor and controller, and the lifted top cover is supported by the supporting rod and the supporting seat; by using the utility model, generator parts such as generator rotors do not need to be dismounted and hung when the top cover of the unit maintenance is lifted, thereby greatly lightening the equipment involved in the unit maintenance and reducing the workload of lifting the top cover; adopt the utility model discloses promote the top cap, need not to dismantle the generator, reduce the harm to the generator, just the utility model discloses a controller control promotes the precision in step and far above the bridge crane and lifts by crane, can fall to minimum with the damage of equipment such as generators.
Therefore, the utility model has the advantages of it is few to relate to equipment, is difficult for causing the generator impaired, and economic benefits is better, can satisfy the needs that modernized unit overhauld equipment safety, civilized construction, strict control time limit for a project.
Further, the utility model discloses an adoption between fixed jib and the activity jib and between activity jib and the activity jib revolves the mode of cover and nut locking screw and is connected, and it is connected reliably, convenient, and when hydraulic cylinder promoted, the combination that promotes high accessible screw rod and nut and revolve the cover was adjusted.
The utility model discloses a pump station, valve unit, controller, pressure sensor and displacement sensor control hydraulic pressure jointly and promote the function of subassembly, it promotes process safe and reliable, the synchronism is good.
The utility model discloses a all adopt conventional connected mode such as screw thread between the hydraulic lifting subassembly, its installation is simple, and is with low costs.
Drawings
Fig. 1 is a schematic structural view of the top cover of the utility model when lifting is completed;
fig. 2 is a schematic structural diagram in the lifting of the top cover of the utility model;
fig. 3 is a schematic structural view of the top cover of the utility model at the beginning of lifting;
FIG. 4 is an enlarged view of FIG. 3 at A (a schematic view of the attachment of the upper portion of the fixed boom);
FIG. 5 is an enlarged view of FIG. 2 at B (a schematic view of the support rod supporting the top cover);
FIG. 6 is an enlarged view of the support base at C of FIG. 1 (a schematic view of the support base supporting the top cover);
FIG. 7 is a schematic view of the connection between the hydraulic cylinder and the top cover of the present invention;
FIG. 8 is a schematic view of the distribution position of the hydraulic cylinder on the top cover of the present invention;
FIG. 9 is a schematic diagram of the synchronous closed-loop control of the present invention;
fig. 10 is a hydraulic schematic diagram of the present invention.
The labels in the figures are: 1-hydraulic oil cylinder, 11-connecting pin, 12-connecting bolt, 13-connecting nut, 14-connecting plate, 2-movable suspender, 3-fixed suspender, 31-clamping nut, 32-backing plate, 33-unit foundation, 4-top cover, 5-supporting rod and 6-supporting seat.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. A synchronous lifting device for a water pump turbine top cover is shown in figures 1-10 and comprises four sets of hydraulic lifting components arranged on a top cover 4, a set of pump station providing a hydraulic power source, a set of control valve bank realizing system logic control and precision control, four sets of displacement sensors for acquiring displacement signals, four sets of pressure sensors for acquiring pressure signals and a set of controller for realizing data acquisition, processing, instruction output and man-machine interaction; each set of hydraulic lifting assembly comprises a hydraulic oil cylinder 1 arranged on a top cover 4, a fixed suspension rod 3, two movable suspension rods 2 which are sequentially connected and respectively connected with the fixed suspension rod 3 and the hydraulic oil cylinder 1, one or more support rods 5 and one or more support seats 6; the supporting rod 5 is detachably connected below the top cover 4; the supporting seat 6 is detachably connected below the supporting rod 5.
The four sets of hydraulic lifting components are arranged on four symmetrical points of the top cover 4, see the attached figure 8.
The pump station provides a hydraulic power source; the control valve group, the displacement sensor, the pressure sensor and the controller are used as a system control part; the hydraulic oil cylinder 1 is used as an actuating mechanism to lift the whole top cover 4.
Safety valves are arranged at two ends of each hydraulic oil cylinder 1, and the safety valves can be used for mechanical protection of overload caused by uneven stress of a single point.
The pump station comprises a radiator, a sub-control box and a three-position four-way electromagnetic reversing valve.
The control valve group comprises an electromagnetic two-position two-way ball valve group, a throttle valve, a balance valve and four electromagnetic valves with two positions and three ways.
The controller, the pressure sensor and the displacement sensor form double closed loop control, and see the attached figure 9.
The fixed suspender 3 is connected with the movable suspender 2 and the movable suspender 2 is connected with the movable suspender 2 by adopting a mode of locking by a turnbuckle and a nut.
The fixed suspender 3 penetrates through the unit foundation 33, and the top of the fixed suspender is provided with a handle nut 31 positioned above the unit foundation 33; a backing plate 32 is arranged between the handle nut 31 and the unit foundation 33.
A plurality of thread grooves are uniformly formed in the bottom of the top cover 4; and the top of each support rod 5 is provided with an external thread corresponding to the thread groove.
The bottom of each hydraulic oil cylinder 1 is connected with a connecting plate 14 through a connecting pin 11; the bottom of the connecting plate 14 is connected with the top cover 4; a plurality of connecting bolts 12 which penetrate through the connecting plate 14 and are connected with the top cover 4 are arranged on the connecting plate 14; the upper part of each connecting bolt 12 is provided with a connecting nut 13.
The working principle is as follows: as shown in fig. 1 to 10, the hydraulic cylinders 1 are distributed on four phases of the top cover 4, and four points are symmetrically distributed. The hydraulic oil cylinder 1 is connected with the top cover 4 through a connecting pin 11, a connecting plate 14, a connecting bolt 12 and a connecting nut 13. The top of the fixed suspension rod 3 is connected with a unit foundation 33 through a nut 31 and a backing plate 32.
A pump station is used for providing a hydraulic power source, a control valve group, a displacement sensor, a pressure sensor and a controller are used as a system control part, and a hydraulic oil cylinder 1 is used as an actuating mechanism to integrally lift a top cover 4.
And in the stage 1, the bottom of the fixed suspender 3 is connected with the hydraulic oil cylinder 1 on the top cover 4 through two movable suspenders 2. The hydraulic ram 1 lifts the top cover 4 along the movable boom 2.
Claims (8)
1. The utility model provides a synchronous hoisting device of pump turbine top cap which characterized in that: the hydraulic lifting device comprises four sets of hydraulic lifting components arranged on a top cover (4), a set of pump station, a set of control valve group, four sets of displacement sensors, four sets of pressure sensors and a set of controller; each set of hydraulic lifting assembly comprises a hydraulic oil cylinder (1) arranged on a top cover (4), a fixed suspender (3), two movable suspenders (2) which are sequentially connected and respectively connected with the fixed suspender (3) and the hydraulic oil cylinder (1), one or more supporting rods (5) and one or more supporting seats (6); the supporting rod (5) is detachably connected below the top cover (4); the supporting seat (6) is detachably connected and arranged below the supporting rod (5).
2. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: safety valves are arranged at two ends of each hydraulic oil cylinder (1).
3. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: the pump station comprises a radiator, a sub-control box and a three-position four-way electromagnetic reversing valve.
4. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: the control valve group comprises an electromagnetic two-position two-way ball valve group, a throttle valve, a balance valve and four electromagnetic valves with two positions and three ways.
5. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: the fixed suspender (3) is connected with the movable suspender (2) and the movable suspender (2) is connected with the movable suspender (2) in a mode of locking by a rotary sleeve and a nut.
6. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: the fixed suspension rod (3) penetrates through the unit foundation (33), and the top of the fixed suspension rod is provided with a handle nut (31) positioned above the unit foundation (33); a backing plate (32) is arranged between the handle nut (31) and the unit foundation (33).
7. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: a plurality of thread grooves are uniformly formed in the bottom of the top cover (4); the top of each support rod (5) is provided with an external thread corresponding to the thread groove.
8. The synchronous lifting device of a pump turbine top cover according to claim 1, characterized in that: the bottom of each hydraulic oil cylinder (1) is connected with a connecting plate (14) through a connecting pin (11); the bottom of the connecting plate (14) is connected with the top cover (4); a plurality of connecting bolts (12) which penetrate through the connecting plate (14) and are connected with the top cover (4) are arranged on the connecting plate (14); and the upper part of each connecting bolt (12) is provided with a connecting nut (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022976072.3U CN213771194U (en) | 2020-12-08 | 2020-12-08 | Synchronous lifting device for top cover of water pump turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022976072.3U CN213771194U (en) | 2020-12-08 | 2020-12-08 | Synchronous lifting device for top cover of water pump turbine |
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| Publication Number | Publication Date |
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| CN213771194U true CN213771194U (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022976072.3U Active CN213771194U (en) | 2020-12-08 | 2020-12-08 | Synchronous lifting device for top cover of water pump turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367665A (en) * | 2022-09-02 | 2022-11-22 | 国网新源控股有限公司 | Operation and maintenance device based on high-voltage power distribution cabinet |
| CN117963769A (en) * | 2024-04-02 | 2024-05-03 | 国能大渡河枕头坝发电有限公司 | Hydraulic turbine lifting system and use method |
| CN117963769B (en) * | 2024-04-02 | 2024-06-21 | 国能大渡河枕头坝发电有限公司 | Hydraulic turbine lifting system and use method |
-
2020
- 2020-12-08 CN CN202022976072.3U patent/CN213771194U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367665A (en) * | 2022-09-02 | 2022-11-22 | 国网新源控股有限公司 | Operation and maintenance device based on high-voltage power distribution cabinet |
| CN115367665B (en) * | 2022-09-02 | 2023-09-26 | 国网新源控股有限公司 | Operation and maintenance device based on high-voltage power distribution cabinet |
| CN117963769A (en) * | 2024-04-02 | 2024-05-03 | 国能大渡河枕头坝发电有限公司 | Hydraulic turbine lifting system and use method |
| CN117963769B (en) * | 2024-04-02 | 2024-06-21 | 国能大渡河枕头坝发电有限公司 | Hydraulic turbine lifting system and use method |
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