Modularized pumped storage power station capable of synchronously cleaning deposited silt

Abstract

The invention discloses a modular pumped storage power station capable of synchronously cleaning deposited silt, which comprises an upper reservoir built at a high position and a lower reservoir built at a low position, the upper reservoir is provided with a reservoir dam body, and the reservoir dam body of the upper reservoir is communicated with the lower reservoir through a drainage conveying pipe; a synchronous desilting mechanism is arranged at the position, located at the reservoir dam body, of the upper reservoir and comprises a synchronous desilting containing pipe which is horizontally arranged in an extending mode, a synchronous desilting driving shaft is rotationally connected into the synchronous desilting containing pipe, and a desilting driving spiral blade is arranged on the synchronous desilting driving shaft; a sludge input communicating shell which communicates with the interior of the synchronous desilting containing pipe and extends horizontally is fixed to the lower side of the synchronous desilting containing pipe; in the process that water in the upper reservoir flows into the lower reservoir through the drainage conveying pipe for power generation, sludge in the upper reservoir is synchronously cleaned, and the dredging driving spiral blades are driven by water flow flowing into the drainage conveying pipe to rotate, so that sludge entering the synchronous dredging containing pipe is cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pumped storage power stations, in particular to a modular pumped storage power station capable of synchronously cleaning accumulated silt. BACKGROUND

[0002] A pumped storage power station is a special type of hydropower station that stores and releases energy through the processes of "pumping water" and "generating electricity". It is an important peak shaving, valley filling, energy storage and stabilizing device in the power system. Its working principle consists of two steps: low valley pumping, during periods of low power load (such as night), using excess electricity to drive a water pump to pump water from a lower reservoir to an upper reservoir for storage, converting electrical energy into potential energy of water; high peak power generation, during periods of high power load (such as daytime), releasing water from the upper reservoir to drive a turbine to generate electricity, converting potential energy back into electrical energy to supplement the power grid.

[0003] This mode not only solves the problem of "surplus renewable energy generation" in the power grid, but also quickly responds to peak electricity demand, improving the stability of the power grid, so it is widely used in power systems with high new energy proportion.

[0004] However, the upper reservoir of a pumped storage power station is usually formed by artificial damming in mountainous areas. If the surrounding vegetation is damaged or rainfall is concentrated, soil erosion is easily triggered, and silt enters the reservoir with rainwater. If the lower reservoir is close to a river, it may be filled with silt due to backflow of floodwater. The upper reservoir has the problem of silt accumulation that is difficult to clean. SUMMARY

[0005] The present application aims to provide a modular pumped storage power station capable of synchronously cleaning accumulated silt, which can timely clean and discharge silt from the upper reservoir, avoiding silt from blocking the power generation equipment.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A modular pumped storage power station capable of synchronously cleaning accumulated silt, comprising an upper reservoir constructed at a high place and a lower reservoir constructed at a low place, the upper reservoir having a reservoir dam body, the reservoir dam body of the upper reservoir being connected in communication with the lower reservoir through a drainage conveying pipe;

[0008] The section of the drainage conveying pipe close to the lower reservoir is a power generation impact section, and the power generation impact section has a hydraulic generator set;

[0009] The upper reservoir is provided with a synchronous silt cleaning mechanism at the reservoir dam body, and a silt buffer slope is constructed at the bottom of the upper reservoir at the reservoir dam body, one side of the silt buffer slope close to the reservoir dam body is lower, and a silt collection groove is formed between the lower side of the silt buffer slope and the reservoir dam body;

[0010] The synchronous dredging mechanism comprises a synchronous dredging accommodating pipe fixed in the silt collecting groove and arranged in a horizontally extending manner, a synchronous dredging driving shaft rotatably connected in the synchronous dredging accommodating pipe, and a dredging driving spiral blade provided on the synchronous dredging driving shaft;

[0011] The lower side of the synchronous dredging accommodating pipe is fixed with a silt input communicating shell which is communicated with the interior of the synchronous dredging accommodating pipe and extends horizontally.

[0012] The two ends of the synchronous dredging accommodating pipe are respectively fixed with silt collecting shells which are communicated with the interior of the synchronous dredging accommodating pipe.

[0013] Preferably, a filter supporting cover shell is fixed at the end of the silt collecting shell which is away from the synchronous dredging accommodating pipe, the silt collecting shell and the filter supporting cover shell are communicated with each other, the sidewall of the filter supporting cover shell is a porous hollow structure with through holes on both sides, and a silt intercepting filter cloth is fixed on the outer side of the filter supporting cover shell.

[0014] It is specified that the filter supporting cover shell can buffer the silt entering the silt collecting shell, avoid the excessive silt from being concentrated in the silt collecting shell, and avoid the overload work of the silt discharge conveying pump.

[0015] Preferably, a silt drainage channel is built on the mountain outside the reservoir dam body, a silt temporary storage pool is arranged in communication with the lower end of the silt drainage channel, and the output end of the silt discharge conveying pump is communicated with the upper end of the silt drainage channel through a silt discharge conveying pipe.

[0016] It is specified that the silt collected in the silt collecting shell is discharged into the silt drainage channel through the silt discharge conveying pump and the silt discharge conveying pipe, and the silt in the silt drainage channel gradually flows into the silt temporary storage pool under the action of gravity and is stored, so as to facilitate the unified recycling.

[0017] Preferably, an upper reservoir water body is stored in the upper reservoir, a silt flushing communicating pipe is fixed in communication with the silt discharge conveying pipe, the other end of the silt flushing communicating pipe is communicated with the upper reservoir water body, and a flushing control valve is provided on the silt flushing communicating pipe.

[0018] It is specified that when the silt discharge conveying pump stops working, the flushing control valve is opened, the upper reservoir water body flows into the silt discharge conveying pipe through the silt flushing communicating pipe, the residual silt in the silt discharge conveying pipe is flushed, the silt in the silt discharge conveying pipe is prevented from being dried and causing blockage, and the water flow after the flushing is discharged into the silt temporary storage pool through the silt drainage channel, so as to flush the silt drainage channel.

[0019] Preferably, the water reservoir dam body inside is provided with a dredging drive mechanism at the drainage conveying pipe, the dredging drive mechanism comprises a dredging drive support ring fixed at the water reservoir dam body inside and located at the drainage conveying pipe, the axis of the dredging drive support ring is horizontally arranged, a primary drive containing shell coaxially arranged with the dredging drive support ring is fixed inside the dredging drive support ring, a primary drive shaft coaxially extended with the dredging drive support ring is rotatably connected to the primary drive containing shell, one end of the primary drive shaft outside the primary drive containing shell extends into the inside of the drainage conveying pipe, a plurality of passive drive paddles are fixed to one end of the primary drive shaft extending into the drainage conveying pipe, and a first bevel gear is fixed to one end of the primary drive shaft inside the primary drive containing shell.

[0020] A vertically extending intermediate transmission shaft is rotatably connected to the lower side of the primary drive containing shell, a second bevel gear is fixed to one end of the intermediate transmission shaft inside the primary drive containing shell, and the first bevel gear is meshingly connected with the second bevel gear.

[0021] A synchronous dredging containing pipe is fixed with a synchronous drive containing shell coaxially arranged therein, a synchronous dredging drive shaft is rotatably connected to the synchronous drive containing shell, a third bevel gear is fixed to one end of the synchronous dredging drive shaft inside the synchronous drive containing shell, the lower end of the intermediate transmission shaft extends downward into the inside of the synchronous drive containing shell, a fourth bevel gear is fixed to one end of the intermediate transmission shaft inside the synchronous drive containing shell, and the third bevel gear is meshingly connected with the fourth bevel gear.

[0022] Explanation: The water flow flowing into the drainage conveying pipe will drive the plurality of passive drive paddles to rotate, thereby driving the primary drive shaft to rotate, the primary drive shaft drives the intermediate transmission shaft to rotate through the meshing connection of the first bevel gear and the second bevel gear, the intermediate transmission shaft drives the two sections of the synchronous dredging drive shaft to rotate through the meshing connection of the third bevel gear and the fourth bevel gear, the synchronous dredging drive shaft drives the dredging drive helical blade to rotate with it, under the drive of the dredging drive helical blade, the sludge entering the inside of the synchronous dredging containing pipe will move from the middle to the two ends, gradually pushing the sludge into the inside of the sludge collection shell.

[0023] Preferably, the synchronous dredging drive shaft penetrates the synchronous drive containing shell along the axis direction of the synchronous dredging containing pipe, and the synchronous dredging drive shaft is divided into two sections along the axis direction of the synchronous dredging containing pipe with the synchronous drive containing shell as a separation point, one dredging drive helical blade is fixed on each of the two sections of the synchronous dredging drive shaft, and the rotation directions of the two dredging drive helical blades are opposite.

[0024] One third bevel gear is fixed to one end of each of the two sections of the synchronous dredging drive shaft inside the synchronous drive containing shell, and the two third bevel gears are meshingly connected with the fourth bevel gear.

[0025] Description: The synchronous dredging drive shaft is divided into two sections, which can cover a wider area along the extension direction of the reservoir dam body, and avoid the blockage of the synchronous dredging containing pipe caused by the long-distance transportation and accumulation of silt to one end at the same time.

[0026] Preferably, a floating and sinking type dredging mechanism is arranged in the upper reservoir, and the floating and sinking type dredging mechanism comprises a floating and sinking type dredging containing shell with an upward opening, and the floating and sinking type dredging containing shell is provided with a dredging input opening in communication with the outside at a position close to the bottom of the side surface of the floating and sinking type dredging containing shell.

[0027] A slidingly connected opening sealing baffle is arranged in the floating and sinking type dredging containing shell at the dredging input opening, and the opening sealing baffle is slidingly connected to the inner side wall of the floating and sinking type dredging containing shell in the vertical direction.

[0028] A downward opening baffle lifting fixing cylinder is fixed in the floating and sinking type dredging containing shell, a upward opening baffle lifting sliding cylinder is slidingly connected in the baffle lifting fixing cylinder, and the opening sealing baffle is fixedly connected to the lower end of the baffle lifting sliding cylinder.

[0029] The baffle lifting fixing cylinder is provided with a baffle lifting driving rod for driving the baffle lifting sliding cylinder to move up and down.

[0030] Description: Due to the fact that the water body in the upper reservoir is collected at the reservoir dam body and then discharged through the drainage delivery pipe for a long time, the silt in the upper reservoir will be concentrated and accumulated at the silt buffer slope and the silt collection groove under the influence of the water flow trend, and the floating and sinking type dredging mechanism is used for auxiliary dredging work of the upper reservoir.

[0031] Preferably, a plurality of floating and sinking control cylinder shells are fixed to the outside of the floating and sinking type dredging containing shell, a floating and sinking control piston is slidingly connected in the floating and sinking control cylinder shell, and the floating and sinking control piston divides the floating and sinking control cylinder shell into a ballast water chamber and an air chamber.

[0032] A floating and sinking control input pipe in communication with the ballast water chamber is fixed to the outside of the floating and sinking control cylinder shell.

[0033] A piston driving containing shell is fixed to the end of the floating and sinking control cylinder shell, a piston pushing rod is fixed to one end of the floating and sinking control piston in the air chamber, the piston pushing rod extends into the piston driving containing shell, and the piston driving containing shell is provided with a floating and sinking control driving rod for driving the piston pushing rod to move.

[0034] Description: The self-weight of the entire floating and sinking type dredging mechanism is greater than the buoyancy received by the floating and sinking type dredging mechanism through the floating and sinking control cylinder shell, and under the action of gravity, the entire floating and sinking type dredging mechanism will sink into the bottom of the upper reservoir, or the self-weight of the entire floating and sinking type dredging mechanism is smaller than the buoyancy received by the floating and sinking type dredging mechanism, and under the action of the buoyancy, the entire floating and sinking type dredging mechanism will float out of the water surface from the bottom of the upper reservoir.

[0035] Compared with the prior art, the beneficial effects of the present application are embodied in the following aspects:

[0036] 1. The application has reasonable structure design, during the period of low power load, the surplus electric energy is used to drive the water pump to pump the water in the lower reservoir to the upper reservoir to store, and the electric energy is converted into the potential energy of water; then during the period of high power load, the water in the upper reservoir is released, and the water in the upper reservoir flows into the lower reservoir through the drainage delivery pipe, in the process, the water flow impacts the turbine blades of the water turbine generator set to generate electricity, and the potential energy of water is converted into electric energy again to supplement the power gap of the power grid.

[0037] 2. The application is easy to operate, during the process that the water in the upper reservoir flows into the lower reservoir through the drainage delivery pipe to generate electricity, the sludge in the upper reservoir is cleaned synchronously, the water flow flowing into the drainage delivery pipe is used to drive, and finally drives the synchronous dredging drive shaft and the dredging drive spiral blade to rotate together, the sludge entering the inside of the synchronous dredging containing pipe is pushed from the middle to both ends, and then the sludge in the sludge collection shell is discharged through the sludge discharge delivery pump.

[0038] 3. In the technical scheme of the application, the water body in the upper reservoir is long-term collected at the reservoir dam body and then discharged through the drainage delivery pipe, under the influence of the water flow trend, the sludge in the upper reservoir is concentrated and accumulated at the sludge buffer slope and the sludge collection groove, the floating and sinking type dredging mechanism is arranged at the bottom of the upper reservoir and close to the top of the sludge buffer slope, and the dredging input opening faces away from the reservoir dam body, so that under the action of the water flow trend, the sludge enters the inside of the floating and sinking dredging containing shell through the dredging input opening. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is the front view of the application;

[0040] Figure 2 is the structure schematic view of the synchronous dredging mechanism of the application;

[0041] Figure 3 is the top view of the synchronous dredging mechanism of the application;

[0042] Figure 4 is the structure schematic view of the sludge drainage channel of the application;

[0043] Figure 5 is the structure schematic view of the floating and sinking type dredging mechanism of the application.

[0044] In the figure, 10-upper reservoir, 11-lower reservoir, 101-reservoir dam, 102-silt buffer slope, 103-silt collection ditch, 104-upper reservoir water body, 12-drainage delivery pipe, 121-power generation impact section, 13-hydroelectric generator set, 20-synchronous dredging mechanism, 21-synchronous dredging storage pipe, 211-synchronous dredging drive shaft, 212-dredging drive spiral blade, 213-silt input connecting shell, 22-silt collection shell, 221-silt efflux delivery pump, 222-silt efflux delivery pipe, 223-filter support cover, 224-silt intercepting filter cloth, 23-silt diversion channel, 231-silt temporary storage tank, 232-silt flushing connecting pipe, 2320-flushing control valve, 24-silt clearing drive mechanism, 240-silt clearing drive support ring , 241-initial drive accommodating shell, 242-initial drive shaft, 243-passive drive blade, 244-first bevel gear, 245-intermediate transmission shaft, 246-second bevel gear, 247-synchronous drive accommodating shell, 248-third bevel gear, 249-fourth bevel gear, 30-floating and sinking dredging mechanism, 31-floating and sinking dredging accommodating shell, 311-dredging input opening, 32-opening sealed baffle, 331-baffle lifting and fixing cylinder, 332-baffle lifting and sliding cylinder, 333-baffle lifting drive rod, 34-floating and sinking control cylinder shell, 341-floating and sinking control piston, 3401-ballast water chamber, 3402-air chamber, 342-floating and sinking control input pipe, 343-piston drive accommodating shell, 344-piston push rod, 345-floating and sinking control drive rod. DETAILED DESCRIPTION

[0045] The following combination Figures 1-5 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are consistent with the up, down, left, right, front and back directions of the projection relationship of each main view or structural schematic diagram itself.

[0046] Example 1:

[0047] A modular pumped storage power station that can simultaneously clear silt deposits, such as Figure 1 As shown, it includes an upper reservoir 10 built at a high place and a lower reservoir 11 built at a low place. The upper reservoir 10 has a reservoir dam body 101. The reservoir dam body 101 of the upper reservoir 10 is connected to the lower reservoir 11 through a drainage and delivery pipe 12.

[0048] A section of the drainage and delivery pipe 12 close to the lower reservoir 11 is a power generation impact section 121 , on which a hydroelectric generator set 13 is provided;

[0049] The hydroelectric generator set 13 is a water turbine generator set in the prior art;

[0050] The upper reservoir 10 is provided with a synchronous dredging mechanism 20 at the reservoir dam body 101. The bottom of the upper reservoir 10 is provided with a silt buffer slope 102 at the reservoir dam body 101. The silt buffer slope 102 is lower near the reservoir dam body 101. The lower side of the silt buffer slope 102 and the reservoir dam body 101 form a silt collection groove 103.

[0051] As shown in Figure 2 , the synchronous dredging mechanism 20 includes a synchronous dredging containing pipe 21 fixed in the silt collection groove 103 and arranged horizontally. The synchronous dredging containing pipe 21 is rotatably connected with a synchronous dredging drive shaft 211. As shown in Figure 3 , the synchronous dredging drive shaft 211 is provided with a dredging drive spiral blade 212.

[0052] As shown in Figure 2 , the lower side of the synchronous dredging containing pipe 21 is fixed with a silt input communication shell 213 which is in communication with the inside of the synchronous dredging containing pipe 21 and extends horizontally.

[0053] As shown in Figure 3 , the two ends of the synchronous dredging containing pipe 21 are each fixed with a silt collection shell 22 which is in communication with the inside of the synchronous dredging containing pipe 21. The silt collection shell 22 is fixed with a silt discharge conveying pump 221.

[0054] As shown in Figure 2 , the inside of the reservoir dam body 101 is provided with a dredging drive mechanism 24 at the drainage conveying pipe 12. The dredging drive mechanism 24 includes a dredging drive support ring 240 fixed to the inside of the reservoir dam body 101 and located at the drainage conveying pipe 12. The axis of the dredging drive support ring 240 is arranged horizontally. The inside of the dredging drive support ring 240 is fixed with an initial drive containing shell 241 which is arranged coaxially. The initial drive containing shell 241 is rotatably connected with an initial drive shaft 242 which extends coaxially with the dredging drive support ring 240. The end of the initial drive shaft 242 which is outside the initial drive containing shell 241 extends to the inside of the drainage conveying pipe 12. The end of the initial drive shaft 242 which extends to the inside of the drainage conveying pipe 12 is fixed with a plurality of passive drive paddles 243. The end of the initial drive shaft 242 which is inside the initial drive containing shell 241 is fixed with a first bevel gear 244.

[0055] The lower side of the initial drive containing shell 241 is rotatably connected with a vertically extending intermediate transmission shaft 245. The end of the intermediate transmission shaft 245 which is inside the initial drive containing shell 241 is fixed with a second bevel gear 246. The first bevel gear 244 is meshingly connected with the second bevel gear 246.

[0056] The synchronous dredging accommodating pipe 21 is fixed with a synchronous driving accommodating shell 247 coaxially arranged therein, the synchronous dredging driving shaft 211 is rotationally connected to the synchronous driving accommodating shell 247, the third bevel gear 248 is fixed to a section of the synchronous dredging driving shaft 211 inside the synchronous driving accommodating shell 247, the intermediate transmission shaft 245 extends downward to the inside of the synchronous driving accommodating shell 247 at the lower end, the fourth bevel gear 249 is fixed to one end of the intermediate transmission shaft 245 inside the synchronous driving accommodating shell 247, and the third bevel gear 248 is in meshing connection with the fourth bevel gear 249.

[0057] Embodiment 2:

[0058] Based on the embodiment 1, as shown in the figure, Figure 3 the silt collecting shell 22 is fixed with a filter support cover 223 away from one end of the synchronous dredging accommodating pipe 21, the silt collecting shell 22 is in communication with the inside of the filter support cover 223, the sidewall of the filter support cover 223 is a porous openwork structure with through holes on both sides, and the silt collecting shell 22 is fixed with a silt interception filter cloth 224 on the outside.

[0059] Embodiment 3:

[0060] Based on the embodiment 2, as shown in the figure, Figure 4 the mountain outside the reservoir dam 101 is built with a silt drainage channel 23, the silt drainage channel 23 is connected with a silt temporary storage pool 231 at the lower end, and the output end of the silt discharge conveying pump 221 is connected with the upper end of the silt drainage channel 23 through the silt discharge conveying pipe 222.

[0061] Embodiment 4:

[0062] Based on the embodiment 3, as shown in the figure, Figure 4 the upper reservoir 10 stores the upper reservoir water body 104, the silt discharge conveying pipe 222 is fixed with a silt flushing communication pipe 232 in communication therewith, the other end of the silt flushing communication pipe 232 is connected with the upper reservoir water body 104, and the silt flushing communication pipe 232 is provided with a flushing control valve 2320.

[0063] Embodiment 5:

[0064] Based on the embodiment 4, as shown in the figure, Figure 3 the synchronous dredging driving shaft 211 penetrates the synchronous driving accommodating shell 247 along the axis direction of the synchronous dredging accommodating pipe 21, the synchronous dredging driving shaft 211 is divided into two sections along the axis direction of the synchronous dredging accommodating pipe 21 with the synchronous driving accommodating shell 247 as the division point, one piece of dredging driving spiral blade 212 is fixed to each of the two sections of the synchronous dredging driving shaft 211, and the rotation directions of the two pieces of dredging driving spiral blade 212 are opposite;

[0065] The two-stage synchronous dredging drive shaft 211 is fixed with a third bevel gear 248 at one end in the synchronous drive containing shell 247, and the two third bevel gears 248 are in meshing connection with a fourth bevel gear 249.

[0066] Embodiment 6:

[0067] Based on embodiment 5, as shown in the drawings, the upper reservoir 10 is provided with a floating and sinking type dredging mechanism 30, as shown in the drawings, the floating and sinking type dredging mechanism 30 includes a floating and sinking dredging containing shell 31 with an opening upward, and the floating and sinking dredging containing shell 31 has a dredging input opening 311 near the bottom on the side surface and in communication with the inside and outside. Figure 1 Figure 5

[0068] The floating and sinking dredging containing shell 31 is provided with an opening downward baffle lifting fixing cylinder 331 inside, and the opening downward baffle lifting fixing cylinder 331 is slidably connected with an opening upward baffle lifting sliding cylinder 332 inside, and the opening closed baffle 32 is fixedly connected with the lower end of the baffle lifting sliding cylinder 332.

[0069] The opening downward baffle lifting fixing cylinder 331 is provided with a baffle lifting driving rod 333 for driving the baffle lifting sliding cylinder 332 to move up and down, the baffle lifting driving rod 333 is an existing technology of an electric control telescopic rod driven by a servo motor, the outer rod end of the baffle lifting driving rod 333 is fixedly connected with the top inside of the baffle lifting fixing cylinder 331, and the inner rod end of the baffle lifting driving rod 333 is fixedly connected with the bottom inside of the baffle lifting sliding cylinder 332.

[0070] As shown in the drawings, the floating and sinking dredging containing shell 31 is fixed with a plurality of floating and sinking control cylinder shells 34 outside, the floating and sinking control cylinder shells 34 are slidably connected with floating and sinking control pistons 341 inside, and the floating and sinking control pistons 341 divide the floating and sinking control cylinder shells 34 into ballast water chambers 3401 and air chambers 3402.

[0071] As shown in the drawings, the floating and sinking control cylinder shells 34 are fixed with floating and sinking control input pipes 342 outside in communication with the ballast water chambers 3401. Figure 5

[0072] The floating and sinking control input pipes 342 are connected with the ballast water chambers 3401.

[0073] ​​​The end of the floating and sinking control cylinder shell 34 is fixed with a piston drive containing shell 343, and the floating and sinking control piston 341 is fixed at one end of the air chamber 3402 with a piston push rod 344 extending into the piston drive containing shell 343. The piston drive containing shell 343 is provided with a floating and sinking control drive rod 345 for driving the piston push rod 344 to move. The floating and sinking control drive rod 345 is an existing technology of an electric control telescopic rod driven by a servo motor. The outer rod end of the floating and sinking control drive rod 345 is fixedly connected with the piston drive containing shell 343, and the inner rod end of the floating and sinking control drive rod 345 is fixedly connected with the piston push rod 344.

[0074] In the actual application process, when the power load is low, the excess electric energy is used to drive the water pump to pump the water in the lower reservoir 11 to the upper reservoir 10 for storage, and the electric energy is converted into the potential energy of water; then during the period of high power load, the water in the upper reservoir 10 is released, and the water in the upper reservoir 10 flows into the lower reservoir 11 through the drainage delivery pipe 12, and in this process, the water flow impacts the turbine blades of the hydroelectric generator set 13 to generate electricity, and the potential energy of water is converted into electric energy again to supplement the power gap of the power grid.

[0075] In the process of the water in the upper reservoir 10 flowing into the lower reservoir 11 through the drainage delivery pipe 12 to generate electricity, the silt in the upper reservoir 10 is cleaned synchronously. The water flow flowing into the drainage delivery pipe 12 drives multiple passive driving paddles 243 and then drives the initial driving shaft 242 to rotate. The initial driving shaft 242 drives the intermediate transmission shaft 245 to rotate through the meshing connection of the first bevel gear 244 and the second bevel gear 246. The intermediate transmission shaft 245 drives the two sections of the synchronous desilting driving shaft 211 to rotate through the meshing connection of the third bevel gear 248 and the fourth bevel gear 249. The synchronous desilting driving shaft 211 drives the desilting driving spiral blade 212 to rotate with it.

[0076] Due to the fact that the water body 104 in the upper reservoir 10 is long-term collected at the reservoir dam body 101 and then discharged through the drainage delivery pipe 12, under the influence of the water flow trend, the silt in the upper reservoir 10 will be concentrated and accumulated at the silt buffer slope 102 and the silt collection groove 103.

[0077] The silt enters the inside of the synchronous desilting containing pipe 21 through the silt input communication shell 213, and then under the driving of the desilting driving spiral blade 212, the silt in the inside of the synchronous desilting containing pipe 21 moves from the middle to the two ends, gradually pushing the silt to the inside of the silt collection shell 22, and then the silt collected in the inside of the silt collection shell 22 is discharged to the silt drainage channel 23 through the silt discharge conveying pump 221 and the silt discharge conveying pipe 222. The silt in the silt drainage channel 23 gradually flows into the silt temporary storage pool 231 under the action of gravity and is stored for unified recycling.

[0078] When the sludge discharge conveying pump 221 stops working, the flushing control valve 2320 is opened, so that the water body 104 in the upper reservoir flows into the sludge discharge conveying pipe 222 through the sludge flushing communication pipe 232, thereby flushing the residual sludge in the sludge discharge conveying pipe 222, avoiding the blockage of the sludge discharge conveying pipe 222 caused by the drying of the sludge, and the water flow after flushing is also discharged into the sludge temporary storage pool 231 through the sludge drainage channel 23, thereby playing a certain flushing effect on the sludge drainage channel 23;

[0079] The floating and sinking dredging mechanism 30 is arranged at the bottom of the upper reservoir 10 and close to the top of the sludge buffer slope 102, and the dredging input opening 311 faces away from the reservoir dam 101, so that the sludge enters the floating and sinking dredging mechanism 30 through the dredging input opening 311 under the action of the water flow trend;

[0080] The inner rod of the floating and sinking control driving rod 345 is retracted to drive the piston pushing rod 344 and the floating and sinking control piston 341 to move upward, so that the volume of the ballast water chamber 3401 increases and the volume of the air chamber 3402 decreases, and the water body 104 in the upper reservoir 104 enters the ballast water chamber 3401 through the floating and sinking control input pipe 342, so that the overall weight of the floating and sinking dredging mechanism 30 increases and the buoyancy decreases. At this time, the weight of the entire floating and sinking dredging mechanism 30 is greater than the buoyancy it receives, and under the action of gravity, the entire floating and sinking dredging mechanism 30 sinks into the bottom of the upper reservoir 10;

[0081] After the upper reservoir 10 completes 10 power generation cycles, the inner rod of the baffle lifting driving rod 333 is extended to drive the baffle lifting sliding cylinder 332 and the opening sealing baffle 32 to move downward, so that the opening sealing baffle 32 is tightly fitted in the dredging input opening 311, thereby sealing the dredging input opening 311, and preventing the sludge collected in the floating and sinking dredging mechanism 31 from leaking out of the dredging input opening 311;

[0082] Then the inner rod of the floating and sinking control driving rod 345 is extended to drive the piston pushing rod 344 and the floating and sinking control piston 341 to move downward, so that the volume of the ballast water chamber 3401 decreases and the volume of the air chamber 3402 increases, and the water body 104 in the ballast water chamber 3401 is discharged through the floating and sinking control input pipe 342, so that the overall weight of the floating and sinking dredging mechanism 30 decreases and the buoyancy it receives increases. At this time, the weight of the entire floating and sinking dredging mechanism 30 is less than the buoyancy it receives, and under the action of the buoyancy, the entire floating and sinking dredging mechanism 30 floats out of the water from the bottom of the upper reservoir 10. The sludge in the floating and sinking dredging mechanism 31 can be cleaned and discharged by manually pulling the entire floating and sinking dredging mechanism 30 to the shore.

Claims

1. A modular pumped storage power plant capable of synchronized sediment dredging, characterized by, The upper reservoir (10) is provided with a reservoir dam body (101), and the reservoir dam body (101) of the upper reservoir (10) is connected with the lower reservoir (11) through a drainage conveying pipe (12); The drainage conveying pipe (12) is provided with a power generation impact section (121) near the lower reservoir (11), and the power generation impact section (121) is provided with a hydraulic generator set (13); The upper reservoir (10) is provided with a synchronous dredging mechanism (20) at the reservoir dam body (101), and a silt buffer slope (102) is built at the bottom of the upper reservoir (10) at the reservoir dam body (101); one side of the silt buffer slope (102) near the reservoir dam body (101) is lower, and a silt collection groove (103) is formed between the lower side of the silt buffer slope (102) and the reservoir dam body (101); The synchronous dredging mechanism (20) comprises a synchronous dredging containing pipe (21) fixed in the silt collection groove (103) and arranged in a horizontal extension mode, a synchronous dredging driving shaft (211) rotatably connected in the synchronous dredging containing pipe (21), and a dredging driving spiral blade (212) on the synchronous dredging driving shaft (211); The synchronous dredging containing pipe (21) is fixed with a silt input communication shell (213) in communication with the inside of the synchronous dredging containing pipe (21) and extending horizontally; The synchronous dredging containing pipe (21) is fixed with a silt collection shell (22) in communication with the inside of the synchronous dredging containing pipe (21) at both ends, and the silt collection shell (22) is fixed with a silt discharge conveying pump (221).

2. The modular pumped storage plant of claim 1, wherein, The silt collection shell (22) is fixed with a filter support cover shell (223) away from the synchronous dredging containing pipe (21), the silt collection shell (22) and the filter support cover shell (223) are in communication with each other, the side wall of the filter support cover shell (223) is a porous hollow structure with both sides through, and the filter support cover shell (223) is fixed with a silt interception filter cloth (224) on the outer side.

3. The modular pumped storage plant of claim 1, wherein, A silt drainage channel (23) is built on the mountain outside the reservoir dam body (101), a silt temporary storage pool (231) is connected to the lower end of the silt drainage channel (23), and the output end of the silt discharge conveying pump (221) is connected to the upper end of the silt drainage channel (23) through a silt discharge conveying pipe (222).

4. The modular pumped storage plant of claim 1, wherein, The upper reservoir (10) is provided with an upper reservoir water body (104), the silt discharge conveying pipe (222) is fixed with a silt flushing communication pipe (232) in communication therewith, the other end of the silt flushing communication pipe (232) is connected to the upper reservoir water body (104), and the silt flushing communication pipe (232) is provided with a flushing control valve (2320).

5. The modular pumped storage power station capable of simultaneously clearing silt according to claim 1, characterized in that: The inside of the reservoir dam body (101) is provided with a dredging driving mechanism (24) at the drainage conveying pipe (12), the dredging driving mechanism (24) comprises a dredging driving support ring (240) fixed inside the reservoir dam body (101) and located at the drainage conveying pipe (12), the axis of the dredging driving support ring (240) is arranged horizontally, a primary driving containing shell (241) is fixed inside the dredging driving support ring (240) and coaxially arranged with the dredging driving support ring (240), a primary driving shaft (242) is rotatably connected to the primary driving containing shell (241) and coaxially extends with the dredging driving support ring (240), one end of the primary driving shaft (242) outside the primary driving containing shell (241) extends into the inside of the drainage conveying pipe (12), a plurality of passive driving paddles (243) are fixed to one end of the primary driving shaft (242) extending into the drainage conveying pipe (12), and a first bevel gear (244) is fixed to one end of the primary driving shaft (242) inside the primary driving containing shell (241). A vertically extending intermediate transmission shaft (245) is rotatably connected to the lower side of the primary driving containing shell (241), a second bevel gear (246) is fixed to one end of the intermediate transmission shaft (245) inside the primary driving containing shell (241), and the first bevel gear (244) is meshingly connected with the second bevel gear (246). A synchronous driving containing shell (247) is fixed inside the synchronous dredging containing pipe (21) and coaxially arranged with the synchronous dredging containing pipe (21), the synchronous dredging driving shaft (211) is rotatably connected to the synchronous driving containing shell (247), a third bevel gear (248) is fixed to one end of the synchronous dredging driving shaft (211) inside the synchronous driving containing shell (247), the lower end of the intermediate transmission shaft (245) extends downward into the inside of the synchronous driving containing shell (247), a fourth bevel gear (249) is fixed to one end of the intermediate transmission shaft (245) inside the synchronous driving containing shell (247), and the third bevel gear (248) is meshingly connected with the fourth bevel gear (249).

6. The modular pumped storage plant of claim 1, wherein, The synchronous dredging driving shaft (211) penetrates the synchronous driving containing shell (247) along the axis direction of the synchronous dredging containing pipe (21), the synchronous dredging driving shaft (211) is divided into two sections along the axis direction of the synchronous dredging containing pipe (21) with the synchronous driving containing shell (247) as a dividing point, one piece of the dredging driving spiral blade (212) is fixed to each of the two sections of the synchronous dredging driving shaft (211), and the rotation directions of the two pieces of the dredging driving spiral blade (212) are opposite. One of the third bevel gears (248) is fixed to one end of each of the two sections of the synchronous dredging driving shaft (211) inside the synchronous driving containing shell (247), and the two third bevel gears (248) are meshingly connected with the fourth bevel gear (249).

7. The modular pumped storage plant of claim 1, wherein, The upper reservoir (10) is provided with a floating and sinking dredging mechanism (30), which comprises a floating and sinking dredging containing shell (31) with an upward opening, and a dredging input opening (311) is arranged on the side of the floating and sinking dredging containing shell (31) near the bottom and communicates with the outside; An opening sealing baffle (32) is slidably connected to the floating and sinking dredging containing shell (31) at the dredging input opening (311); An opening downward baffle lifting fixing cylinder (331) is fixed in the floating and sinking dredging containing shell (31), an opening upward baffle lifting sliding cylinder (332) is slidably connected in the opening downward baffle lifting fixing cylinder (331), and the opening sealing baffle (32) is fixedly connected to the lower end of the baffle lifting sliding cylinder (332); The baffle lifting fixing cylinder (331) is provided with a baffle lifting driving rod (333) for driving the baffle lifting sliding cylinder (332) to move up and down.

8. The modular pumped storage plant of claim 7, wherein, A plurality of floating and sinking control cylinder shells (34) are fixed outside the floating and sinking dredging containing shell (31), a floating and sinking control piston (341) is slidably connected in the floating and sinking control cylinder shell (34), and the floating and sinking control piston (341) divides the floating and sinking control cylinder shell (34) into a ballast water chamber (3401) and an air chamber (3402); A floating and sinking control input pipe (342) is fixed outside the floating and sinking control cylinder shell (34) and communicates with the ballast water chamber (3401); A piston driving containing shell (343) is fixed at the end of the floating and sinking control cylinder shell (34), a piston pushing rod (344) is fixed at one end of the floating and sinking control piston (341) in the air chamber (3402), the piston pushing rod (344) extends into the piston driving containing shell (343), and the piston driving containing shell (343) is provided with a floating and sinking control driving rod (345) for driving the piston pushing rod (344) to move.

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