Dredging device for water collecting well of pumped storage power station
By introducing air supply and sewage discharge systems into the water collection well of the pumped storage power station, using air blowing ring pipes and submersible sewage discharge pumps combined with the compressed air of the mobile air compressor, the time-consuming and labor-intensive problem of manually cleaning silt is solved, achieving efficient and convenient The dredging effect.
Patent Information
- Application Number
- CN202420627134.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-29
AI Technical Summary
When cleaning up silt at the bottom of the water collection well, existing pumped storage power stations rely on manual processing, which is time-consuming and labor-intensive and inefficient, affecting the normal operation of the leakage drain pump.
A water collection well silt device including air supply system, air blowing system and sewage discharge system is designed, using pre-embedded air blowing ring pipe and submersible sewage pump, combined with a mobile air compressor to provide compressed air, through purge and discharge of sewage. Efficient way to clean up silt.
Efficient and convenient water collection well dredging is achieved, ensuring the normal operation of the leakage drainage pump, and avoiding the time and labor consumption of manual cleaning.
Smart Images
Figure CN222206732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydropower engineering, in particular to a silt-clearing device for a water collection well of a pumped storage power station. Background Art
[0002] As a key building in the leakage drainage system of a pumped-storage power station, the leakage collection well plays a vital role in collecting leaked water in underground plant buildings and preventing plant flooding accidents.
[0003] Since the leaking water often contains many impurities such as mud and sand, it is inevitable that a lot of sediment will accumulate at the bottom of the leaking water collection well, especially in the early stage of the power station. Usually, a pumped storage power station will install several seepage drainage pumps in the water collection well to pump out the water in the water collection well to avoid flooding accidents caused by excessive water levels. If there are too many sediments in the water collection well, it will inevitably affect the normal operation of the seepage drainage pump, and in severe cases, it may even cause damage to the water pump. Therefore, it is necessary to regularly clean the sediment at the bottom of the water collection well.
[0004] At present, pumped storage power stations generally use manual processing to clear the silt at the bottom of the water collection well. This method is not only time-consuming and labor-intensive, but also has low silt removal efficiency. Utility Model Content
[0005] The utility model aims to provide an efficient and convenient silt removal device for a water collection well of a pumped storage power station.
[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0007] A silt removal device for a water collection well in a pumped storage power station comprises a water collection well, an inspection platform laid flat in the water collection well, and a drainage gallery arranged on one side of the water collection well, wherein the inspection platform is connected to the drainage gallery, and further comprises an air supply system, an air blowing system, and a sewage discharge system; the air blowing system comprises an air blowing ring pipe and a plurality of air blowing ports, wherein the air blowing ring pipe is pre-buried in the wall at the bottom of the water collection well, and the air blowing ring pipe is provided with a plurality of air blowing ports at equal intervals, and the air blowing ports extend out of the wall of the water collection well and are exposed in the water collection well; the air supply system comprises an air supply branch pipe 1 and an air supply branch pipe 2, wherein the air supply branch pipe 1 and the air supply branch pipe 2 are connected to the water collection well; The two air branches are pre-buried in the wall of the water collection well and one end is connected to the blowing ring pipe, and the other end is led upward to the inspection platform elevation and then exposed from the wall of the water collection well, and the exposed part is connected to the exhaust port of the mobile air compressor through a quick-release joint; the sewage system includes a submersible sewage pump, a sewage hose and a sewage pipe, the submersible sewage pump is arranged at the bottom of the water collection well, one end of the sewage hose is connected to the submersible sewage pump, and the other end is led upward to the inspection platform elevation and connected to the sewage pipe through a quick-release joint, and the sewage pipe is led to the sewage collection tank along the inspection platform and the drainage corridor.
[0008] Specifically, the blowing ring pipe is pre-buried in the wall at the bottom edge of the water collection well, in the wall at a height of about 500mm from the bottom of the water collection well. The spacing of the blowing ports can be adjusted according to the size of the water collection well. When the area of the water collection well is large, the spacing of the blowing ports is reduced and the number of the blowing ports is increased accordingly. The length of the exposed part of the blowing port extending out of the water collection well wall should not be too long to avoid deformation of the pipeline affecting the blowing effect. Preferably, a filter screen is provided at the end of the blowing port to prevent large pieces of mud and sand from blocking its outlet.
[0009] When the water collection well area of a pumped storage power station is large, two submersible sewage pumps are usually set up to work simultaneously.
[0010] The connection between the sewage hose and the sewage pipe is as follows: the end of the sewage hose is provided with a flange female end quick connector, and the beginning of the sewage pipe is provided with a flange male end quick connector of the same model, and the two are matched in yin and yang, which can realize temporary connection or disconnection operation, and are relatively flexible. Preferably, the sewage pipe is arranged at a suitable height of the inspection platform, and the beginning of the sewage pipe is also provided with an isolation valve, the function of which is to prevent the sediment-containing sewage in the sewage pipe from flowing back into the water collection well.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] The utility model discloses a dredging device for a water collection well of a pumped storage power station, which has high efficiency and convenient operation. By adding a submersible sewage pump and an air blowing pipeline and using a mobile air compressor equipped in a compressed air system of the pumped storage power station to provide an air source, a good dredging effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structural arrangement of the utility model.
[0014] Figure 2 It is a schematic diagram of the three-dimensional structural arrangement of the pipeline of the utility model.
[0015] Figure 3 It is a schematic diagram of the bottom plan structure of the water collection well of the utility model.
[0016] Figure 4 It is a top view of the structural arrangement of the utility model.
[0017] Figure 5 It is a side view of the structural arrangement of the utility model.
[0018] Figure numerals: 1. water collection well; 2. air blowing ring pipe; 21. air blowing port; 3. air supply branch pipe 1; 4. air supply branch pipe 2; 5. inspection platform; 6. quick-release joint 1; 7. submersible sewage pump; 8. sewage hose; 9. quick-release joint 2; 10. sewage pipe; 101. isolation valve; 11. drainage gallery. DETAILED DESCRIPTION
[0019] The embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings.
[0020] like Figures 1 to 5 As shown, in this embodiment, three water collection wells 1 are arranged side by side, and a blowing ring pipe 2 is arranged in the bottom wall of each water collection well 1. The air supply branch pipe 1 3 and the air supply branch pipe 2 4 are respectively arranged in the side wall of the water collection well 1 on the outside. The air supply branch pipe 1 3 is vertically led upward to the inspection platform 5, and the air supply branch pipe 2 4 is first vertically led upward to the inspection platform 5 and then horizontally led to the end of the air supply branch pipe 1 3. The two ends are respectively connected to the mobile air compressor through the quick-release joint 1 6. There are two submersible sewage pumps 7 and they are respectively arranged at the bottom of two adjacent water collection wells 1. The sewage hoses 8 led out of the submersible sewage pumps 7 are respectively connected to the sewage pipe 10 through the quick-release joint 2 9. The sewage pipe 10 is led to the sewage collection tank along the inspection platform 5 and the drainage corridor 11.
[0021] First, the mobile air compressor equipped in the compressed air system of the pumped storage power station is transported to a suitable position near the inspection platform 5 of the water collection well 1 through the drainage corridor 11, and the quick connector at one end of the exhaust hose of the mobile air compressor is connected to the exhaust port of the mobile air compressor, and the quick connector at the other end is connected to the DN50 air supply quick connector 6 set on the wall of the inspection platform 5. Then, the mobile air compressor is turned on to deliver compressed air with a pressure level of 1.0MPa to the blowing pipeline. The compressed air passes through the exhaust hose-DN50 quick connector 6-DN50 air supply branch pipe 3, DN50 air supply branch pipe 4-DN50 blowing ring pipe 2- The DN25 air port 21 enters the bottom of the leaking water collection well 1, and blows away the silt and other debris accumulated at the bottom of the water collection well 1; at the same time, the end of the DN80 sewage hose 8 at the outlet of the submersible sewage pump 7 is connected to the DN80 quick-release joint 2 9 set on the inspection platform 5, and the isolation valve 101 at the beginning of the DN80 sewage pipe 10 is opened; when the air blowing pipeline works for about 5 minutes, the silt accumulated at the bottom of the water collection well 1 is blown away and mixed in the water, the submersible sewage pump 7 is turned on to carry out silt removal, and the silt at the bottom of the water collection well 1 will be discharged along the submersible sewage pump 7- DN80 sewage hose 8- DN80 quick-release joint 2 9- DN80 isolation valve 101- DN80 sewage pipe 10 to the sewage collection pool specially set up in the drainage corridor 11 to wait for subsequent cleaning; at this point, the dredging work of the leaking water collection well 1 is completed.
[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A silt removal device for a water collection well of a pumped storage power station, comprising a water collection well, a patrol platform laid flat in the water collection well, and a drainage gallery arranged on one side of the water collection well, wherein the patrol platform is connected to the drainage gallery, and is characterized in that: It also includes an air supply system, an air blowing system and a sewage discharge system; the air blowing system includes an air blowing ring pipe and a plurality of air blowing ports, the air blowing ring pipe is pre-buried in the wall at the bottom of the water collecting well, and the air blowing ring pipe is provided with a plurality of air blowing ports at equal intervals, and the air blowing ports extend out from the wall of the water collecting well and are exposed in the water collecting well; the air supply system includes an air supply branch pipe 1 and an air supply branch pipe 2, the air supply branch pipe 1 and the air supply branch pipe 2 are respectively pre-buried in the wall of the water collecting well and one end is connected to the air blowing ring pipe, and the other end is led upward to the inspection platform elevation and then emerges from the wall of the water collecting well, and the exposed part is connected to the exhaust port of the mobile air compressor through a quick flexible joint; the sewage discharge system includes a submersible sewage pump, a sewage hose and a sewage pipe, the submersible sewage pump is arranged at the bottom of the water collecting well, one end of the sewage hose is connected to the submersible sewage pump, and the other end is led upward to the inspection platform elevation and is connected to the sewage pipe through a quick flexible joint, and the sewage pipe is led to the sewage collecting tank along the inspection platform and the drainage corridor.
2. A pumped storage power station water collection well desilting device according to claim 1, characterized in that: A filter screen is arranged at the end of the air outlet to prevent the outlet from being blocked by large pieces of mud and sand.
3. A pumped storage power station water collection well desilting device according to claim 1, characterized in that: An isolation valve is provided at the beginning of the sewage pipe to prevent the sewage containing mud and sand in the sewage pipe from flowing back into the water collection well.