Multi-stage flow channel power generation pump water circulation device and method

Abstract

The invention belongs to the field of water conservancy and hydropower engineering equipment, and particularly provides a multi-stage flow channel power generation pump water circulation device and method.The device comprises a descending multi-stage gate and an ascending multi-stage gate, the inlet end and the outlet end of a gate chamber are each provided with a herringbone gate, a middle pier platform is arranged between the descending multi-stage gate and the ascending multi-stage gate, and a flow channel mechanism is arranged in the middle pier platform; the flow channel mechanism comprises a main flow channel, two sets of side piers are arranged in the main flow channel and divide the main flow channel into three sets of branch flow channels, namely a left flow channel, a middle flow channel and a right flow channel, and a plurality of transverse piers are arranged in the branch flow channels and divide the branch flow channels into a plurality of water storage bins. The water storage bins of the left flow channel and the right flow channel correspond to the lock chamber of the downward multi-stage gate and the lock chamber of the upward multi-stage gate respectively, communicated power generation channels are arranged between the water storage bins of the left flow channel and the corresponding lock chambers and between the water storage bins of the right flow channel and the corresponding lock chambers, and branch power generator mechanisms are arranged in the power generation channels. According to the device, the flow channel structure is optimized, drainage kinetic energy and potential energy in the navigation operation process of the ship lock are utilized for power generation, and the power generation and water utilization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of water conservancy and hydropower engineering, and in particular to a multi-stage flow channel power generation pump water circulation device and method. Background Art

[0002] The ship lock is the most widely used navigation structure for water transport. By opening and closing the filling and discharging gates, the water level in the lock chamber can be adjusted, and the ships in the lock chamber can be raised and lowered in a step-like manner, thus overcoming the navigation difficulties caused by the water level difference in the waterway. In the process of ships passing through the lock, a large amount of water is directly discharged to the downstream through the lock water transfer corridor, resulting in the energy contained in this part of the water being lost. This is especially true for high-head ship locks, which have high channel grades, large lock sizes, and large water level differences upstream and downstream. When the lock is discharged downstream during navigation operation, a large amount of water stored in the reservoir dam will be consumed, resulting in a huge waste of water resources, and also affecting the power generation efficiency of the reservoir power station.

[0003] For hydropower projects, multi-stage ship locks generally only have the function of navigation. However, at the same time, a large amount of water is needed from upstream to balance the water level elevation of each lock chamber. This large amount of water loses the potential energy and kinetic energy of the water, resulting in great waste. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multi-stage flow channel power generation pump water circulation device and method, optimize the flow channel structure, utilize the kinetic energy and potential energy of water discharge during the navigation operation of the lock to generate electricity, and improve the efficiency of power generation and water utilization.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-stage flow channel power generation pump water circulation device, including a ship lock mechanism, the ship lock mechanism includes a downward multi-stage lock and an upward multi-stage lock, the downward multi-stage lock and the upward multi-stage lock both include a multi-stage lock chamber, the inlet and outlet ends of the lock chamber are both provided with a miter door, a middle pier platform is provided between the downward multi-stage lock and the upward multi-stage lock, a flow channel mechanism is provided in the middle pier platform, the flow channel mechanism includes a main flow channel, two groups of side piers are provided in the main flow channel to divide the main flow channel into three groups of branch flow channels, namely a left flow channel, a middle flow channel and a right flow channel, a plurality of cross piers are provided in the branch flow channels to divide the branch flow channels into a plurality of water storage tanks, the water storage tanks of the left flow channel and the right flow channel are respectively arranged corresponding to the lock chamber of the downward multi-stage lock and the lock chamber of the upward multi-stage lock, a connected power generation channel is provided between the water storage tanks of the left flow channel and the right flow channel and the corresponding lock chamber, a generator support mechanism is provided in the power generation channel, maintenance valves are provided at both ends of the power generation channel, and gates are provided in the cross piers and the side piers corresponding to the water storage tanks.

[0006] In the preferred scheme, the downstream multi-stage lock and the upstream multi-stage lock are both five-stage ship locks. The downstream multi-stage lock is, from upstream to downstream, a level one right lock, a level two right lock, a level three right lock, a level four right lock and a level five right lock, and the upstream multi-stage lock is, from upstream to downstream, a level one left lock, a level two left lock, a level three left lock, a level four left lock and a level five left lock.

[0007] In a preferred embodiment, a water supply channel is arranged on one side of the power generation channel, both ends of the water supply channel are connected to the power generation channel and are arranged at both ends of the supporting generator, and swing valves are arranged at both ends of the water supply channel, the swing valve includes a valve seat arranged at the end of the water supply channel, and also includes a hinge rod, the hinge rod is rotatably installed on the embedded part, the hinge rod is driven by a motor, the valve body is installed on the hinge rod, and the valve body is driven by the hinge rod to swing to realize the opening or closing of the water supply channel and the closing or opening of the power generation channel.

[0008] In a preferred solution, a sealing gasket is provided on the circumference of the valve body, and the sealing gasket is installed on the outside of the valve body by countersunk bolts.

[0009] In a preferred solution, one side of the valve body close to the water supply channel is configured to be arc-shaped, and the other side is an arc surface or a plane that is consistent with the side wall of the power generation channel.

[0010] In a preferred embodiment, the generator support mechanism includes a first support arm arranged in the power generation channel, a first rotating shaft is rotatably mounted on the first support arm, a support impeller is provided at one end of the first rotating shaft, and the other end is mounted on the generator support.

[0011] In a preferred solution, an inspection opening is provided on the top of the power generation channel, and the inspection opening is closed by an inspection plate.

[0012] In a preferred solution, the inspection valve is a gate valve, which is arranged in the first gate grooves at both ends of the power generation channel.

[0013] In a preferred solution, a first trash rack is provided at one end of the power generation channel close to the lock chamber.

[0014] In a preferred solution, a bottom plate is provided in the lock chamber, a plurality of support columns are provided at the bottom of the bottom plate, a water inlet bin is provided below the bottom plate, a plurality of water inlets and outlets connected to the water inlet bin are provided on the bottom plate, and the power generation channel is connected to the water inlet bin.

[0015] In a preferred solution, the gate is a flat gate installed in the second gate groove of the cross pier and the side pier, side water seals are arranged on both sides of the gate, a bottom water seal is arranged at the bottom, and a lifting ring is arranged on the top of the gate.

[0016] In a preferred solution, an inlet gate is provided at the upstream port of the main channel, and a tailwater gate is provided at the downstream port.

[0017] In a preferred solution, a second trash rack is arranged at the upstream opening of the main channel, and the second trash rack is arranged upstream of the water inlet gate.

[0018] In a preferred solution, a main channel power generation device is arranged at the downstream end of the main channel, and the main channel power generation device comprises a second support arm, a second rotating shaft is rotatably mounted on the second support arm, a main impeller is arranged at one end of the second rotating shaft, and the other end is mounted on the main generator.

[0019] In a preferred solution, a guide vane device is provided at the downstream end of the main channel, and the guide vane device is arranged upstream of the main channel power generation device. The guide vane device includes a guide vane frame arranged in the main channel, and guide vane mechanisms are provided in the guide vane frame corresponding to the left channel, the middle channel and the right channel. The guide vane mechanism includes a plurality of guide vane shafts arranged in the guide vane frame, and guide vane blades are provided on the guide vane shafts. Each group of guide vane mechanisms is provided with a driving mechanism for driving the guide vane shaft.

[0020] In a preferred embodiment, the driving mechanism includes a guide vane motor arranged on the guide vane frame, the guide vane motor is connected to one of the guide vane shafts, and two adjacent groups of guide vane blades are connected by a connecting rod pulling mechanism, the connecting rod pulling mechanism includes a pull rod and connecting rods hingedly arranged at both ends of the pull rod, and the ends of the two groups of connecting rods away from the pull rods are respectively hingedly installed on the ends of the two groups of guide vane blades. When the guide vane blades are rotated to a vertical state, the two connecting rods of each group of connecting rod pulling mechanisms are respectively hinged to the downstream end and upstream end of the two adjacent groups of guide vane blades.

[0021] In a preferred solution, the guide vane frame is an arc-shaped structure arched upstream.

[0022] In a preferred solution, the middle pier platform is a stepped structure including multiple platforms.

[0023] In a preferred solution, a factory building is provided on the middle pier platform, and accessories required for power generation and pumping operations are provided in the factory building, including batteries, which are used to store electricity generated by the generator mechanism.

[0024] In the preferred solution, each level of the middle pier platform is provided with a track, which is arranged parallel to the water flow direction. The maintenance gantry moves along the track for maintenance or installation operations. The maintenance gantry is provided with a mobile lifting winch that moves laterally along the maintenance gantry, and a hook is provided at the lower end of the lifting wire rope of the mobile lifting winch.

[0025] In a preferred solution, a plurality of inspection doors are provided on the top of the middle pier platform corresponding to the left flow channel, the middle flow channel and the right flow channel.

[0026] The present invention also provides an operating method of a multi-stage flow channel power generation pump water circulation device, comprising: 1) Navigation When a ship passes through the ship lock from upstream to downstream, firstly, the inspection valves of the power channel on one side of the lock chamber corresponding to the first ship lock and the second ship lock of the upstream multi-stage lock are opened, and the two-stage power channels are in an open state. At the same time, the gates on the transverse piers between the water storage tanks of the left flow channel corresponding to the two-stage power channels are opened, and the water in the lock chamber of the first ship lock flows into the corresponding water storage tank through the upstream power channel in turn, and then flows into the water storage tank of the next level through the gates on the transverse piers, and then flows into the lock chamber corresponding to the second ship lock through the power channel of the next level, until the water in the lock chamber corresponding to the second ship lock is flush with the water level in the lock chamber of the first ship lock. At this time, all the inspection valves and gates of the power channel are closed, and the miter gates between the lock chambers corresponding to the first ship lock and the second ship lock are opened, and the ship in the first ship lock is driven into the second ship lock, and the above operations are repeated until the ship drives out of the ship lock; When a ship passes through a ship lock from downstream to upstream, firstly, the inspection valves of the power channel on one side of the lock chamber corresponding to the last ship lock of the downstream multi-stage lock and the penultimate ship lock are opened, and the two-stage power channels are in an open state. At the same time, the gates on the transverse piers between the water storage tanks of the right flow channel corresponding to the two-stage power channels are opened, and the water in the lock chamber of the penultimate ship lock flows into the corresponding water storage tank through the power channel in turn, and then flows into the water storage tank of the last stage through the gates on the transverse piers, and then flows into the lock chamber corresponding to the last ship lock through the power channel of the last stage, until the water in the lock chamber corresponding to the penultimate stage is flush with the middle water level of the lock chamber of the last ship lock. At this time, all the inspection valves and gates of the power channel are closed, and the miter gates between the lock chambers corresponding to the last ship lock and the penultimate ship lock are opened, and the ship lock in the last ship lock is driven into the penultimate ship lock, and the above operations are repeated until the ship sails out of the ship lock; 2) Power generation During navigation, when water flows through the power channel, the corresponding generator mechanism generates electricity.

[0027] In the preferred scheme, when a ship passes through the lock from upstream to downstream, after the water level of the last lock of the upstream multi-stage lock is the same as the penultimate lock, after the ship sails to the last lock, the water in the lock chamber of the last lock is discharged into the lock chamber of the first lock. If there is a ship working in the first lock of the upstream multi-stage lock, the water in the lock chamber of the last lock is discharged into the other lock chambers of the upstream multi-stage lock, and the selection is made from low to high according to the elevation until the water elevation in the lock chamber of the last lock of the upstream multi-stage lock is flush with the downstream, and the ship sails out of the lock.

[0028] In the preferred scheme, when the water in the lock chamber of the last ship lock of the upward multi-stage lock is discharged into the other lock chambers of the upward multi-stage lock, if all the ship locks of the upward multi-stage lock are in working condition, the inspection valve of the power generation channel corresponding to the last ship lock of the upward multi-stage lock is opened, and the gates on the most downstream side piers of the left flow channel, the middle flow channel and the right flow channel are opened, and the water inlet gate and the tail water gate of the main flow channel are closed at the same time, the inspection valve of the power generation channel corresponding to the last ship lock of the downward multi-stage lock is opened, and the swing valves at both ends of the corresponding water supply channel are opened at the same time, and the water in the last ship lock of the upward multi-stage lock flows through the power generation channel, the left flow channel, the middle flow channel, the right flow channel corresponding to the last ship lock of the downward multi-stage lock and the water supply channel corresponding to the last ship lock of the downward multi-stage lock in sequence, until the water elevation in the lock chamber of the last ship lock of the upward multi-stage lock is flush with the downstream, and the ship sails out of the lock.

[0029] In a preferred solution, when the middle channel of the main channel is not adjusting the water flow between the left channel and the right channel, the water inlet gate and the tailwater gate are opened, and the main channel power generation device generates electricity.

[0030] The present invention provides a multi-stage flow channel power generation pump water circulation device and method, which has the following beneficial effects: 1. Through the innovative parallel design of multiple branch flow channels, power generation channels and water supply channels, as well as the installation of generator devices in the power generation channel and meeting the use requirements of various working conditions, it can generate electricity while navigating, which is very innovative.

[0031] 2. While meeting the normal functions of the ship lock, it can also use the kinetic energy and potential energy of water to generate electricity, and can also recycle water, saving water while saving electricity. Because the ship locks are mostly equipped with power stations or water supply systems, less use of upstream water can generate more electricity or more water conservancy irrigation benefits. It is particularly valuable for ship locks in areas with power and water shortages, and generates more additional benefits.

[0032] 3. This device can be used not only on newly built ship locks, but also on already built ship locks after renovation, greatly improving the efficiency of power generation and water utilization through minor renovations. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2A top view of the present invention; Figure 3 is a structural schematic diagram of the main channel; Figure 4 The schematic diagram of the connection mechanism between the power generation channel and the water supply channel; Figure 5 It is a schematic diagram of the three-dimensional structure of the connection between the power generation channel and the water supply channel; Figure 6 It is a structural schematic diagram of the swing valve; Figure 7 Schematic diagram of the installation structure of the sealing gasket; Figure 8 for Figure 7 Schematic diagram of the structure along the AA surface in the middle; Fig. 9 It is the structural schematic diagram of the lock chamber; Fig.10 The schematic diagram of the installation structure of the gate is shown in FIG. Fig.11 is a schematic diagram of the structure of the guide vane device; Fig.12 It is a schematic diagram of the installation structure of the connecting rod pulling mechanism when the guide vane device is closed; Fig.13 It is a schematic diagram of the installation structure of the connecting rod pulling mechanism when the guide vane device is opened; Fig.14 This is a schematic diagram of the installation structure of the maintenance door machine; In the figure: a ship lock mechanism 100, a downstream multi-stage lock 110, a first-stage right lock 111, a second-stage right lock 112, a third-stage right lock 113, a fourth-stage right lock 114, a fifth-stage right lock 115, an upstream multi-stage lock 120, a first-stage left lock 121, a second-stage left lock 122, a third-stage left lock 123, a fourth-stage left lock 124, and a fifth-stage left lock 125; Lock chamber 130, bottom plate 131, support column 132, water inlet chamber 133, water inlet and outlet 134, miter door 135; Middle pier platform 200, plant 210, battery 220, track 230, maintenance door machine 240, platform 250, mobile hoisting winch 260, hook 270; Flow channel mechanism 300, main flow channel 310, left flow channel 311, middle flow channel 312, right flow channel 313, water storage tank 314, water inlet gate 315, tailwater gate 316, second trash rack 317, power generation channel 320, inspection valve 321, first door groove 322, inspection port 323, inspection plate 324, side pier 330, cross pier 340, second door groove 350, water supply channel 360, swing valve 370, valve seat 371, hinge rod 372, embedded part 373, motor 374, valve body 375, sealing gasket 376, countersunk bolt 377, first trash rack 380, gate 390, side water seal 391, bottom water seal 392, lifting ring 393; A supporting generator mechanism 400, a first supporting arm 410, a first rotating shaft 420, a supporting impeller 430, and a supporting generator 440; Main channel power generation device 500, second support arm 510, second rotating shaft 520, main impeller 530, main generator 540; Guide vane device 600 , guide vane frame 610 , guide vane shaft 620 , guide vane blades 630 , guide vane motor 640 , connecting rod 650 , and pull rod 660 . DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Embodiment 1: like Figures 1 to 5 As shown, a multi-stage flow channel power generation pump water circulation device includes a ship lock mechanism 100, a middle pier platform 200 and a flow channel mechanism 300.

[0041] The ship lock mechanism 100 includes a downstream multi-stage lock 110 and an upstream multi-stage lock 120. The number of stages is reasonably set according to the water level difference between the upstream and downstream of the dam. The downstream multi-stage lock 110 and the upstream multi-stage lock 120 both include multi-stage lock chambers 130. Each stage of the lock chamber 130 of the downstream multi-stage lock 110 and the upstream multi-stage lock 120 is an independent chamber with upper and lower miter doors 135. The miter doors are set to be one-way opening and closing according to the ship passing direction of the multi-stage lock.

[0042] Preferably, Figure 2 and 9 As shown, a bottom plate 131 is provided in the lock chamber 130, a plurality of support columns 132 are provided at the bottom of the bottom plate 131, a water inlet bin 133 is provided below the bottom plate 131, a plurality of water inlets and outlets 134 connected to the water inlet bin 133 are provided on the bottom plate 131, the power generation channel 320 is connected to the water inlet bin 133, and independent small water inlet bins connected to each other are formed through a plurality of support columns 132, the support columns 132 are supported on the bottom of the bottom plate 131, the bottom plate 131 is reliably set on the rock surface, and a plurality of water inlets and outlets 134 are provided on the bottom plate.

[0043] In this embodiment, if Figure 2 As shown, the downstream multi-stage lock 110 and the upstream multi-stage lock 120 are both five-stage ship locks. The downstream multi-stage lock 110 is composed of a first-stage right lock 111, a second-stage right lock 112, a third-stage right lock 113, a fourth-stage right lock 114 and a fifth-stage right lock 115 from upstream to downstream, and the upstream multi-stage lock 120 is composed of a first-stage left lock 121, a second-stage left lock 122, a third-stage left lock 123, a fourth-stage left lock 124 and a fifth-stage left lock 125 from upstream to downstream.

[0044] A middle platform 200 is provided between the downward multi-stage gate 110 and the upward multi-stage gate 120. Fig.14 As shown, the middle pier platform 200 is provided with a plant 210 and other auxiliary equipment, and a storage battery 220 is provided in the plant 210 for storing the electricity generated by the branch generator mechanism 400. The plant 210 is matched with the power generation and pumping equipment. In addition to the various accessories required for power generation and pumping, the plant 210 is also provided with a storage battery 220 for storing the electricity generated by the main generator and the branch generator for use in pumping water or plant system operation.

[0045] The middle pier platform 200 is a stepped structure, including multiple platforms 250. A maintenance gantry 240 is provided on each platform 250, and the maintenance gantry 240 reciprocates on a track 230, which is arranged on the platform along a parallel water flow direction, and the maintenance gantry 240 is used for installation, disassembly and maintenance of the plant, flow channel and various power generation devices.

[0046] Wind and solar power generation devices can also be installed in areas that do not affect the operation of the maintenance door crane 240, such as the middle pier platform 200 and the top of the factory building 210, so as to maximize the comprehensive power generation efficiency with the generator. The electricity generated by the wind and solar power generation devices is also stored in the battery 220 for standby use after inversion and convergence.

[0047] A plurality of inspection doors 280 are arranged on the top of the middle pier platform 200 corresponding to the left flow channel 311, the middle flow channel 312 and the right flow channel 313. They are normally closed and opened during inspection so that they can be hoisted and inspected by the inspection door crane when inspection is needed.

[0048] A flow channel mechanism 300 is provided in the middle pier platform 200 , that is, the flow channel mechanism 300 is provided in the concrete or rock structure of the middle pier platform 200 , and the flow channel mechanism 300 includes a main flow channel 310 , and the main flow channel 310 is provided from upstream to downstream along the water flow direction. Two groups of side piers 330 are arranged in the main channel 310 to divide the main channel 310 into three groups of branch channels, namely the left channel 311, the middle channel 312 and the right channel 313. Several cross piers 340 are arranged in the branch channels to divide the branch channels into multiple water storage tanks 314. The water storage tanks 314 of the left channel 311 correspond to the lock chambers 130 of the downstream multi-stage gate 110, and the water storage tanks 314 of the right channel 313 correspond to the lock chambers 130 of the upstream multi-stage gate 120. A connected power generation channel 320 is arranged between the water storage tanks 314 and the corresponding lock chambers 130 of the left channel 311 and the right channel 313. A generator support mechanism 400 is arranged in the power generation channel 320. Inspection valves 321 are arranged at both ends of the power generation channel 320. Gates 390 are arranged on the cross piers 340 and the side piers 330 corresponding to the water storage tanks 314.

[0049] The left channel 311, the middle channel 312, the right channel 313 and other branch channels of the main channel 310 are provided with hoisting objects and inlets for maintenance at appropriate positions, and are provided with sealed maintenance doors which are normally closed and opened during maintenance so that they can be lifted and maintained through the maintenance door crane when maintenance is needed.

[0050] Preferably, the gate 390 is a flat gate, which is installed in the second gate slot 350 of the cross pier 340 or the side pier 330. The cross pier 340 and the side pier 330 are provided with a plurality of independent second gate slots 350, in which the gate 390 is installed. The gate 390 is arranged in the second gate slot 350. Fig.10 As shown, the gate 390 is also provided with a side water seal 390 and a bottom water seal 392 to prevent water leakage when the gate is closed, and a lifting ring 393 is provided on the top of the gate 390. The gate is opened and closed by the maintenance door machine 240 provided on the middle pier platform 200 at each level. The gate 390 can also be opened and closed in other forms such as hydraulic cylinders, winches or motor screws according to specific circumstances. The setting of multiple gates in one flow channel is to perform multi-linear water flow regulation between the flow channels without affecting each other.

[0051] An inlet gate 315 is disposed at the upstream end of the main channel 310 , and a tailwater gate 316 is disposed at the downstream end. A second trash rack 317 is disposed at the upstream end of the main channel 310 , and the second trash rack 317 is disposed upstream of the inlet gate 315 .

[0052] The second trash rack 317 is used to block floating objects outside the flow channel or other debris that affects the operation of the generator. The water inlet gate 315 and the tailwater gate 316 are both arranged close to the main flow channel 310. When the flow channel needs to be repaired, the water inlet gate 315 and the tailwater gate 316 can be closed for personnel to enter for maintenance.

[0053] A generator support mechanism 400 is provided in the power generation channel 320 , and inspection valves 321 are provided at both ends of the power generation channel 320 . The side of the power generation channel 320 close to the main channel 310 is called the water inlet, and the side close to each gate chamber is called the water outlet. Inspection valves 321 are provided at both the inlet and outlet of the power generation channel 320 .

[0054] The inspection valve 321 is a gate valve, and can also be set as a butterfly valve or a ball valve as needed. The gate valve is set in the first gate groove 322 at both ends of the power generation channel 320, which is convenient for cooperating with the inspection door machine to open and close the inspection valve 321.

[0055] A first trash rack 380 is disposed at one end of the power generation channel 320 close to the lock chamber 130 to block floating objects outside the power generation channel 320 or other debris that may affect the operation of the power generation mechanism 400 .

[0056] Preferably, Fig.10 As shown, the top of the power channel 320 is provided with an inspection port 323, and the inspection port 323 is closed with an inspection panel 324. The inspection panel 324 is normally closed and opened during inspection, so that when inspection is required, the inspection door machine 240 can be used for lifting and inspection to prevent water leakage when the power channel 320 is overcurrent. In the power generation state, the inspection panel 324 is closed to seal and waterproof, and can be opened to lift the equipment out for inspection during inspection.

[0057] In this embodiment, the generator mechanism 400 includes a first arm 410 disposed in the power generation channel 320, a first shaft 420 is rotatably mounted on the first arm 410 through a bearing, a first shaft 420 is provided with a branch impeller 430 at one end, and the other end is mounted on the generator 440. The generator 440 can not only generate electricity by using water flow, but also has a water pumping function, so that the water in each lock chamber can be adjusted and used by pumping water.

[0058] This device also includes a system master control device. The plant is equipped with an on-site master control device, which can also be controlled remotely, manually or automatically. Through the control hardware and built-in logic calculation system, plus various sensors such as water level, flow, flow rate, pressure, leakage, etc. set on each device, the working status of each flow channel and gate chamber and the estimated working time of this cycle are detected, so as to reasonably predict and select the optimal working strategy according to the working principle, provide reference for manual control or perform automatic control under the set automatic control conditions.

[0059] Embodiment 2: Different from Example 1, Figures 4 to 8 As shown, a water supply channel 360 is arranged on one side of the power generation channel 320. The water supply channel 360 can be arranged as an arc-shaped water channel. Both ends of the water supply channel 360 are connected with the power generation channel 320 and are arranged at both ends of the support generator 350. Both ends of the water supply channel 360 are provided with swing valves 370. The swing valve 370 includes a valve seat 371 arranged at the end of the water supply channel 360, a hinge rod 372 is rotatably installed on an embedded part 373 through a bearing, the hinge rod 372 is driven by a motor 374, and a valve body 375 is installed on the hinge rod 372. The valve body 375 is driven by the hinge rod 372 to swing to realize the opening or closing of the water supply channel 360 and the closing or opening of the power generation channel 320.

[0060] Preferably, Figure 7 and 8 As shown, a sealing gasket 376 is provided on the circumference of the valve body 375 , and the sealing gasket 376 is installed on the outside of the valve body 375 through a countersunk bolt 377 to ensure that no water leakage occurs when the swing valve 370 is in a closed state.

[0061] The side of the valve body 375 close to the water supply channel 360 is set in an arc shape so that when the swing valve 370 is open, the water flows through the water supply channel 360 to form a normal water flow pattern through the arc surface, avoiding a large amount of water energy loss or negative pressure causing abnormal damage to the flow channel.

[0062] The back of the valve body 375 is an arc or plane that is consistent with the power generation channel 320. In this way, when the swing valve 370 is in a closed state on the water supply channel 360, it is smooth and flush with the side wall of the power generation channel 320, avoiding negative pressure or cavitation damage on the back of the water flow passing through the power generation channel 320.

[0063] By setting up the water supply channel 360, when the inspection valves 321 at both ends of the power generation channel 320 are opened, the corresponding swing valves 370 at both ends of the water supply channel 360 are opened, and the water inlets at both ends of the water supply channel 360 are in an open state. At the same time, the valve body 375 of the swing valve 370 swings to the power generation channel 320 to close the power generation channel 320. Water flows into the power generation channel 320 from the end, flows through the water supply channel 360, and flows out from the other end of the power generation channel 320, so that the water does not flow through the branch generator mechanism 400. In some cases, when the water flow is mobilized, it can be achieved without passing through the branch generator mechanism 400.

[0064] Embodiment 3: Different from Example 1, Figure 3 and Figures 11 to 13 As shown, a main channel power generation device 500 is provided at the downstream end of the main channel 310 and is provided upstream of the tailwater gate 316. Preferably, a main channel power generation device 500 is integrally arranged in a manner that the three branch channels of the left channel 311, the middle channel 312, and the right channel 313 are connected. Alternatively, the three branch channels of the left channel 311, the middle channel 312, and the right channel 313 are not connected, and three main channel power generation devices 500 are arranged in a manner that the three branch channels are independent of each other.

[0065] The main channel power generation device 500 includes a second arm 510, a second shaft 520 is rotatably mounted on the second arm 510, a main impeller 530 is provided at one end of the second shaft 520, and the other end is mounted on a main generator 540. The main generator 540 can be a generator only, or a generator with a water pumping function can be installed.

[0066] A guide vane device 600 is provided at the downstream end of the main channel 310. The guide vane device 600 is arranged upstream of the main channel power generation device 500 to block water when the main channel power generation device 500 is not in operation, so as to protect the main generator and facilitate maintenance.

[0067] The guide vane device 600 includes a guide vane frame 610 disposed in the main flow channel 310, and guide vane mechanisms are disposed in the guide vane frame 610 corresponding to the left flow channel 311, the middle flow channel 312 and the right flow channel 313. The guide vane mechanism includes a plurality of guide vane shafts 620 disposed in the guide vane frame 610, and the guide vane shafts 620 are rotatably mounted in the guide vane frame 610 through bearings. Guide vane blades 630 are disposed on the guide vane shafts 620, and the guide vane blades 630 are in a horizontally unfolded water-blocking state, and adjacent guide vane blades 630 partially overlap, thereby achieving a water-blocking effect. Each set of guide vane mechanisms is provided with a driving mechanism for driving the guide vane shafts 620, and the driving mechanism is a guide vane motor 640 disposed above one or more of the guide vane shafts.

[0068] Taking the preferred connection of the three branch flow channels of the left flow channel 311, the middle flow channel 312, and the right flow channel 313 as an example, the guide vane frame 610 is also arranged as a whole in the main flow channel 310, but three groups of guide vane mechanisms are set corresponding to the left flow channel 311, the middle flow channel 312 and the right flow channel 313, and an independent drive opening and closing method is adopted to facilitate the overall control of the flow direction of the flow channel water. As long as more than one guide vane mechanism of the three branch flow channels is opened, the normal power generation of the main flow channel power generation device 500 can be guaranteed, and it will not affect the separate scheduling and use of the branch flow of the branch flow channel with the guide vane mechanism closed.

[0069] In this embodiment, if Figures 11 to 13 The driving mechanism includes a guide vane motor 640 disposed on the guide vane frame 610, the guide vane motor 640 is connected to one of the guide vane shafts 620, and two adjacent groups of guide vane blades 630 are connected through a connecting rod pulling mechanism, the connecting rod pulling mechanism includes a pull rod 660 and a connecting rod 650 hingedly disposed at both ends of the pull rod 660, and one end of the two groups of connecting rods 650 away from the pull rod 660 is respectively hingedly installed at the ends of the two adjacent groups of guide vane blades 630, when the guide vane blades 630 rotate to a vertical state, the two connecting rods 650 of each group of connecting rod pulling mechanisms are respectively hinged to the downstream end and the upstream end of the two adjacent groups of guide vane blades 630. In this way, when the guide vane motor 640 drives one group of guide vane shafts 620 to rotate, it can be pulled through the connecting rod pulling mechanism to form the effect of opening and closing all the guide vane blades 630 at the same time.

[0070] Preferably, the guide vane frame 610 is an arc-shaped structure arched upstream. In this way, on the one hand, when closed to meet the impact of water flow, a lighter structure can be used to form a higher strength, and on the other hand, water can be guided to the power generation channels 320 on both sides through the arc gate in the closed state to maximize the use of water kinetic energy.

[0071] Embodiment 4: The working mode and principle of the original ship lock in the prior art are as follows: Taking the ship from upstream to downstream as an example, the working principle of a general ship lock is introduced. In the figure of this patent, the upstream multi-stage lock 120 is the upstream channel of the ship lock. Because the ship passed in the previous working cycle, the water level in the first-level left lock 121 is lower than the upstream water level. First, the upstream water is replenished into the first-level left lock 121 through the water replenishment facility to be flush with it. Then, the first-level left lock 121 opens its upstream miter gate 135, and the ship enters the first-level left lock 121. The upstream miter gate 135 is closed; then the water level in the second-level left lock 122, which was originally lower than the first-level left lock 121, is replenished to the same level through the water replenishment facility. The ship enters the second level left lock 122 and closes the upstream miter gate 135. Similarly, the ship enters the fifth level left lock 125 and closes its corresponding upstream miter gate 135. At this time, the water level in the fifth level left lock 125 is obviously higher than the downstream water level. Generally, the ship lock will drain the water in the fifth level left lock 125 to the downstream by gravity through drainage facilities, and then open the downstream miter gate of the fifth level left lock 125, and the ship will sail out of the ship lock, ending this working cycle. However, a large amount of water will be discharged from the upstream to the downstream in each working cycle. Not only is the water not recycled, but the kinetic and potential energy of the water cannot be fully utilized. The working principle and operation method of the present invention are described below: An operating method of a multi-stage flow channel power generation pump water circulation device, comprising: 1) Navigation When a ship passes through the ship lock from upstream to downstream, firstly, the inspection valve 321 of the power generation channel 320 on one side of the lock chamber 130 corresponding to the first-level left lock 121 and the second-level left lock 122 of the upstream multi-stage lock 120 is opened, and the two-stage power generation channels 320 are in an open state. At the same time, the gate 390 on the cross pier 340 between the water storage tank 314 of the left flow channel 311 corresponding to the two-stage power generation channels 320 is opened, and the water in the lock chamber 130 of the first-level left lock 121 flows into the corresponding water storage tank 314 through the upstream power generation channel 320 in turn, and then flows into the water storage tank 314 of the next level through the gate 390 on the cross pier 340, and then flows into the lock chamber 130 corresponding to the second-level left lock 122 through the next-level power generation channel 320, until the second-level left lock 122 The water in the corresponding lock chamber 130 is flush with the center level of the lock chamber 130 of the first-level left lock 121. At this time, the inspection valves 321 and the gates 390 of all the power generation channels 320 are closed, and the miter gates 135 between the lock chambers 130 corresponding to the first-level left lock 121 and the second-level left lock 122 are opened, and the ship in the first-level left lock 121 is driven into the second-level left lock 122. The above operation is repeated. When the water levels of the fifth-level left lock 125 and the fourth-level left lock 124 of the upstream multi-stage lock 120 are the same, the ship is driven to the fifth-level left lock 125. The water in the lock chamber 130 of the fifth-level left lock 125 is discharged to other lock chambers 130 of the upstream multi-stage lock 120 through the corresponding power generation channel 320 and the left flow channel 311. At this time, the branch generator of the power generation channel 320 is converted into a water pump working condition.

[0072] There are several options for discharging into other lock chambers 130: the optimal path is: discharging into the lock chamber 130 of the first-level left lock 121; the suboptimal path is: but if a ship is working in the first-level left lock 121 and cannot be discharged, you can choose the suboptimal path, and you can first discharge into other non-working lock chambers 130 of the upstream multi-stage lock 120, and select from low to high according to the elevation, until the water elevation in the lock chamber 130 of the fifth-level left lock 125 of the upstream multi-stage lock 120 is flush with the downstream, and the ship sails out of the lock. Because the low-elevation lock chamber 130 has a small water level difference with the five-stage left lock 125, the water pump has a higher drainage flow and higher efficiency under the condition of a certain rated power, that is, each lock chamber 130 also serves as a water storage chamber, and the excess water discharged into other non-working lock chambers 130 will be transferred to the first-stage left lock 121 after the first-stage left lock 121 is idle; the optimal path again is: if in extreme cases there are ships passing through the lock chambers 130 of the first-stage left lock 121, and all are in working state, the water can be discharged to the non-working lock chamber 130 corresponding to the right flow channel 313, and the inspection valve 321 of the power generation channel 320 corresponding to the five-stage left lock 125 of the upstream multi-stage lock 120 is opened, and the most downstream side piers 33 of the left flow channel 311, the middle flow channel 312, and the right flow channel 313 are opened. 0, and at the same time close the water inlet gate 315 and the tailwater gate 316 of the main channel 310, open the inspection valve 321 of the power generation channel 320 corresponding to the five-level right gate 115 of the downstream multi-stage lock 110, and at the same time open the swing valves 370 at both ends of the corresponding water replenishment channel 360. Because the water in the middle channel is in a full water state for a long time, under the action of water pressure, the water in the five-level left gate 125 of the upstream multi-stage lock 120 flows through the power generation channel 320, the left channel 311, the middle channel 312, the right channel 313 corresponding to the five-level left gate 125 of the downstream multi-stage lock 110, and the water replenishment channel 360 corresponding to the five-level right gate 115 of the downstream multi-stage lock 110 in sequence, until the water level in the lock chamber 130 of the last ship lock of the upstream multi-stage lock 120 is flush with the downstream, and the ship sails out of the ship lock.

[0073] The reason for using the water replenishment channel 360 is that the water comes from the pumping operation of the upward multi-stage gate 120, and then using this water to drive the branch generator in the power generation channel 320 corresponding to the downward multi-stage gate 110 will cause the pumping operation to consume more electricity due to energy loss, which is not worth the loss. Through these options, it can be ensured that the normal operation of each gate and the water circulation can be guaranteed.

[0074] When a ship passes through the ship lock from downstream to upstream, the miter gate 135 on the downstream side of the last ship lock is first opened. After the ship enters the last ship lock, the miter gate 135 is closed. The inspection valve 321 of the power generation channel 320 on one side of the lock chamber 130 corresponding to the last ship lock of the downstream multi-stage lock 110 and the second-last ship lock is opened. The two-stage power generation channels 320 are in an open state. At the same time, the gate 390 on the cross pier 340 between the water storage tank 314 of the right flow channel 313 corresponding to the two-stage power generation channels 320 is opened. The water in the lock chamber 130 of the second-last ship lock flows out through the power generation channel 320 in sequence. The water flows into the corresponding water storage tank 314, then flows into the water storage tank 314 of the last level through the gate 390 on the cross pier 340, and then flows into the lock chamber 130 corresponding to the last level ship lock through the last level power generation channel 320, until the water in the lock chamber 130 corresponding to the penultimate level is flush with the lock chamber 130 of the last level ship lock, at this time, close the inspection valves 321 and gates 390 of all power generation channels 320, open the miter gate 135 between the lock chambers 130 corresponding to the last level ship lock and the penultimate level ship lock, and drive the lock in the last level ship lock into the penultimate level ship lock. Repeat the above operation until the ship sails out of the lock.

[0075] Specifically, in this embodiment, for the case where the downstream multi-stage lock 110 is a five-stage ship lock: First, the miter gate 135 on the downstream side of the five-stage right lock 115 is opened. After the ship enters the five-stage right lock 115, the miter gate 135 is closed, and the inspection valve 321 of the power generation channel 320 on one side of the lock chamber 130 corresponding to the five-stage right lock 115 and the four-stage right lock 114 is opened. The two-stage power generation channels 320 are in an open state. At the same time, the gate 390 on the cross pier 340 between the water storage tank 314 of the right flow channel 313 corresponding to the two-stage power generation channels 320 is opened. The water in the lock chamber 130 of the four-stage right lock 114 flows into the corresponding water storage tank 314 through the power generation channel 320 in turn, and then flows into the corresponding water storage tank 314 through the power generation channel 320. The water flows through the gate 390 on the transverse pier 340 into the last-stage water storage tank 314, and then flows into the lock chamber 130 corresponding to the last-stage ship lock through the last-stage power generation channel 320, until the water in the lock chamber 130 corresponding to the fourth-stage right lock 114 is flush with the water in the lock chamber 130 of the fifth-stage right lock 115. At this time, all the inspection valves 321 and gates 390 of the power generation channels 320 are closed, and the miter gate 135 between the fifth-stage right lock 115 and the fourth-stage right lock 114 is opened, and the ship lock in the fifth-stage right lock 115 is driven into the fourth-stage right lock 114, and the above operation is repeated until the ship sails out of the ship lock.

[0076] After the miter gate 135 on the downstream side of the fourth-level right gate 114 is closed, because the water level of the fifth-level right gate 115 is higher than the downstream water level, in order to avoid water loss, the water in the fifth-level right gate 115 is pumped into other gate chambers 130. The principles and steps for selecting the drainage path in other gate chambers 130 are the same as those for discharging water from the fifth-level left gate 125 into other gate chambers.

[0077] 2) Power generation During navigation, when water flows through the power generation channel 320, the corresponding generator mechanism 400 generates electricity.

[0078] When the middle channel 312 of the main channel 310 is not adjusting the water flow across the left channel 311 and the right channel 313, the water inlet gate 315 and the tail water gate 316 are opened, and the main channel power generation device 500 generates electricity.

[0079] The maintenance process of this device includes the following aspects: 1) Maintenance of the branch generator mechanism 400. In addition to being used in the above-mentioned manner under the condition of cross-regional water transfer, each power generation channel 320 can also be used when each branch generator or its power generation channel needs maintenance. The maintenance is carried out by hoisting with the maintenance door crane 240. First, the swing valves 370 at both ends of the water supply channel 360 are set to the closed condition of the power generation channel 320, and then the maintenance plate 324 on the branch generator 440 is opened, and the branch generator 440 is hoisted out for maintenance and then reinstalled.

[0080] 2) Maintenance of the water supply channel 360, the left flow channel 311, and the right flow channel 313. When the water in the corresponding lock chamber 130 is drained and the maintenance valve 321 is open, personnel can enter the water inlet tank 133 from the water inlet and outlet 134 on the bottom plate 131 of the lock chamber 130, and then enter the water supply channel 360, the left flow channel 311, and the right flow channel 313 from the power generation channel 320 for maintenance. This maintenance condition does not require stopping the operation of all the lock chambers 130 of the left flow channel 311 or the right flow channel 313 for maintenance. It only needs to close the gates 390 upstream and downstream of the corresponding water storage tank 314, and maintenance can be carried out when other lock chambers 130 can be used as water storage chambers or do not need to be drained.

[0081] 3) Flow channel maintenance. The maintenance of the left flow channel 311, the middle flow channel 312, and the right flow channel 313 requires closing the maintenance valve 321 on the power generation channel 320 corresponding to the branch flow channel, the gate 390 on the side pier 330, the water inlet gate 315, and the tailwater gate 316, opening the gate 390 on the cross pier 340 of the branch flow channel that needs maintenance, and then performing maintenance through the maintenance door 280 set above the branch flow channel that needs maintenance.

[0082] As an alternative embodiment, multiple sets of impellers may be provided for each power generation device of the main channel power generation device 500 or the branch generator mechanism 400 as required to improve the power generation efficiency.

[0083] As an alternative embodiment, depending on the specific water quality and environmental conditions, the second trash rack 317 and some of the inspection valves 321 may be eliminated if necessary because the first trash rack 380 is provided, so as to simplify the structure and improve the efficiency.

[0084] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here, that is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A multi-stage flow channel power generation pump water circulation device, characterized in that: The invention comprises a ship lock mechanism (100), wherein the ship lock mechanism (100) comprises a descending multi-stage lock (110) and an ascending multi-stage lock (120), wherein the descending multi-stage lock (110) and the ascending multi-stage lock (120) both comprise a multi-stage lock chamber (130), wherein the inlet and outlet ends of the lock chamber (130) are both provided with a miter door (135), wherein a middle pier platform (200) is provided between the descending multi-stage lock (110) and the ascending multi-stage lock (120), wherein a flow channel mechanism (300) is provided in the middle pier platform (200), wherein the flow channel mechanism (300) comprises a main flow channel (310), wherein two groups of side piers (330) are provided in the main flow channel (310) to separate the main flow channel (310) into three groups of branch flow channels, namely a left flow channel (311), a middle flow channel (312) and a right flow channel. (313), a plurality of transverse piers (340) are provided in the branch flow channels to divide the branch flow channels into a plurality of water storage tanks (314), the water storage tanks (314) of the left flow channel (311) and the right flow channel (313) are respectively arranged corresponding to the lock chambers (130) of the downstream multi-stage lock (110) and the lock chambers (130) of the upstream multi-stage lock (120), a power generation channel (320) is arranged between the water storage tanks (314) of the left flow channel (311) and the right flow channel (313) and the corresponding lock chambers (130), a power generation channel (320) is arranged in communication, a generator support mechanism (400) is arranged in the power generation channel (320), and inspection valves (321) are arranged at both ends of the power generation channel (320), and gates (390) are arranged corresponding to the water storage tanks (314) on the transverse piers (340) and the side piers (330).

2. A multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The downstream multi-stage lock (110) and the upstream multi-stage lock (120) are both five-stage ship locks. The downstream multi-stage lock (110) is composed of a first-stage right lock (111), a second-stage right lock (112), a third-stage right lock (113), a fourth-stage right lock (114), and a fifth-stage right lock (115) from upstream to downstream, and the upstream multi-stage lock (120) is composed of a first-stage left lock (121), a second-stage left lock (122), a third-stage left lock (123), a fourth-stage left lock (124), and a fifth-stage left lock (125) from upstream to downstream.

3. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A water supply channel (360) is provided on one side of the power generation channel (320), both ends of the water supply channel (360) are connected to the power generation channel (320) and are provided at both ends of the support generator (350), and swing valves (370) are provided on both ends of the water supply channel (360), the swing valve (370) comprising a valve seat (371) provided at the end of the water supply channel (360), and also comprising a hinge rod (372), the hinge rod (372) being rotatably mounted on an embedded part (373), the hinge rod (372) being driven by a motor (374), the valve body (375) being mounted on the hinge rod (372), and the valve body (375) being driven by the hinge rod (372) to swing to realize opening or closing of the water supply channel (360) and closing or opening of the power generation channel (320).

4. A multi-stage flow channel power generation pump water circulation device according to claim 3, characterized in that: A sealing gasket (376) is provided on the circumference of the valve body (375), and the sealing gasket (376) is installed on the outside of the valve body (375) by means of countersunk bolts (377).

5. The multi-stage flow channel power generation pump water circulation device according to claim 3, characterized in that: The valve body (375) is configured to have an arc-shaped side close to the water supply channel (360), and the other side is a curved surface or a flat surface consistent with the side wall of the power generation channel (320).

6. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The generator support mechanism (400) comprises a first support arm (410) arranged in a power generation channel (320), a first rotating shaft (420) rotatably mounted on the first support arm (410), a support impeller (430) being provided at one end of the first rotating shaft (420), and the other end being mounted on the generator support (440).

7. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The top of the power generation channel (320) is provided with an inspection opening (323), and the inspection opening (323) is provided with an inspection plate (324) for sealing.

8. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The inspection valve (321) is a gate valve, which is arranged in the first gate grooves (322) at both ends of the power generation channel (320).

9. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A first trash rack (380) is provided at one end of the power generation channel (320) close to the lock chamber (130).

10. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A bottom plate (131) is provided in the lock chamber (130), a plurality of support columns (132) are provided at the bottom of the bottom plate (131), a water inlet bin (133) is provided below the bottom plate (131), a plurality of water inlets and outlets (134) in communication with the water inlet bin (133) are provided on the bottom plate (131), and the power generation channel (320) is in communication with the water inlet bin (133).

11. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The gate (390) is a flat gate installed in the second gate slot (350) of the transverse pier (340) and the side pier (330). Side water seals (391) are arranged on both sides of the gate (390), a bottom water seal (392) is arranged at the bottom, and a lifting ring (393) is arranged at the top of the gate (390).

12. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: An inlet gate (315) is provided at the upstream port of the main flow channel (310), and a tailwater gate (316) is provided at the downstream port.

13. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A second trash rack (317) is disposed at the upstream port of the main channel (310), and the second trash rack (317) is disposed upstream of the water inlet gate (315).

14. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A main channel power generation device (500) is arranged at the downstream end of the main channel (310), and the main channel power generation device (500) comprises a second support arm (510), a second rotating shaft (520) is rotatably mounted on the second support arm (510), a main impeller (530) is arranged at one end of the second rotating shaft (520), and the other end is mounted on a main generator (540).

15. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A guide vane device (600) is provided at the downstream end of the main flow channel (310), the guide vane device (600) being arranged upstream of the main flow channel power generation device (500), the guide vane device (600) comprising a guide vane frame (610) arranged in the main flow channel (310), guide vane mechanisms corresponding to the left flow channel (311), the middle flow channel (312) and the right flow channel (313) are all provided in the guide vane frame (610), the guide vane mechanisms comprising a plurality of guide vane shafts (620) arranged in the guide vane frame (610), guide vane blades (630) being provided on the guide vane shafts (620), and each group of guide vane mechanisms is provided with a driving mechanism for driving the guide vane shafts (620).

16. A multi-stage flow channel power generation pump water circulation device according to claim 15, characterized in that: The driving mechanism comprises a guide vane motor (640) arranged on the guide vane frame (610), the guide vane motor (640) is connected to one of the guide vane shafts (620), two adjacent groups of guide vane blades (630) are connected via a connecting rod pulling mechanism, the connecting rod pulling mechanism comprises a pull rod (660) and connecting rods (650) hingedly arranged at both ends of the pull rod (660), one end of the two groups of connecting rods (650) away from the pull rod (660) is respectively hingedly installed at the ends of the two groups of guide vane blades (630), when the guide vane blades (630) are rotated to a vertical state, the two connecting rods (650) of each group of connecting rod pulling mechanisms are respectively hinged to the downstream end and the upstream end of the two adjacent groups of guide vane blades (630).

17. The multi-stage flow channel power generation pump water circulation device according to claim 15, characterized in that: The guide vane frame (610) is an arc-shaped structure arched upstream.

18. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: The middle pier platform (200) is a stepped structure, comprising a multi-level platform (250).

19. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A plant (210) is provided on the middle pier platform (200), and accessories required for power generation and water pumping operations are provided in the plant (210), including a storage battery (220), and the storage battery (220) is used to store electricity generated by the generator mechanism (400).

20. The multi-stage flow channel power generation pump water circulation device according to claim 18, characterized in that: Each platform (250) of the middle pier platform (200) is provided with a track (230), the track (230) being arranged parallel to the direction of the water flow, the maintenance door machine (240) moving along the track (230) for maintenance or installation and removal operations, the maintenance door machine (240) being provided with a mobile hoisting winch (260) moving laterally along the maintenance door machine (240), the lower end of the hoisting wire rope of the mobile hoisting winch (260) being provided with a hook (270).

21. The multi-stage flow channel power generation pump water circulation device according to claim 1, characterized in that: A plurality of inspection doors (280) are provided on the top of the middle pier platform (200) corresponding to the left flow channel (311), the middle flow channel (312) and the right flow channel (313).

22. An operating method of a multi-stage flow channel power generation pump water circulation device, characterized in that: include: 1) Navigation When a ship passes through a ship lock from upstream to downstream, the inspection valves (321) of the power generation channel (320) on one side of the lock chamber (130) corresponding to the first-stage ship lock and the second-stage ship lock of the upstream multi-stage lock (120) are first opened, and the two-stage power generation channels (320) are in an open state. At the same time, the gate (390) on the transverse pier (340) between the water storage tank (314) of the left flow channel (311) corresponding to the two-stage power generation channels (320) is opened, and the water in the lock chamber (130) of the first-stage ship lock flows into the corresponding water storage tank (314) through the most upstream power generation channel (320) in turn, and then flows through the transverse pier ( The water flows through the gate (390) on the power channel (340) into the water storage tank (314) of the next level, and then flows into the lock chamber (130) corresponding to the second-level ship lock through the power channel (320) of the next level, until the water in the lock chamber (130) corresponding to the second-level ship lock is flush with the water in the lock chamber (130) of the first-level ship lock. At this time, the inspection valves (321) and gates (390) of all power channels (320) are closed, and the miter gates (135) between the lock chambers (130) corresponding to the first-level ship lock and the second-level ship lock are opened, and the ship in the first-level ship lock is driven into the second-level ship lock. The above operation is repeated until the ship drives out of the lock; When a ship passes through a ship lock from downstream to upstream, firstly, the inspection valve (321) of the power generation channel (320) on one side of the lock chamber (130) corresponding to the last ship lock of the downstream multi-stage lock (110) and the second-last ship lock is opened, and the two-stage power generation channel (320) is in an open state. At the same time, the gate (390) on the cross pier (340) between the water storage tank (314) of the right flow channel (313) corresponding to the two-stage power generation channel (320) is opened, and the water in the lock chamber (130) of the second-last ship lock sequentially flows through the power generation channel (320) into the corresponding water storage tank (314), and then flows through the gate on the cross pier (340). (390) flows into the last-stage water storage tank (314), and then flows into the lock chamber (130) corresponding to the last-stage ship lock through the last-stage power generation channel (320), until the water in the lock chamber (130) corresponding to the penultimate stage is flush with the water level in the lock chamber (130) of the last-stage ship lock. At this time, all the inspection valves (321) and the gate (390) of the power generation channel (320) are closed, and the miter gate (135) between the lock chambers (130) corresponding to the last-stage ship lock and the penultimate-stage ship lock is opened, and the lock in the last-stage ship lock is driven into the penultimate-stage ship lock, and the above operation is repeated until the ship sails out of the lock; 2) Power generation During navigation, when water flows through the power generation channel (320), the corresponding power generation mechanism (400) generates electricity.

23. The method for operating a multi-stage flow channel power generation pump water circulation device according to claim 22, characterized in that: When a ship passes through a ship lock from upstream to downstream, after the water level of the last ship lock of the upward multi-stage lock (120) is equal to the water level of the second to last ship lock, the ship sails to the last ship lock, and the water in the lock chamber (130) of the last ship lock is discharged into the lock chamber (130) of the first ship lock. If there is a ship working in the first ship lock of the upward multi-stage lock (120), the water in the lock chamber (130) of the last ship lock is discharged into other lock chambers (130) of the upward multi-stage lock (120), and the selection is performed from low to high until the water level in the lock chamber (130) of the last ship lock of the upward multi-stage lock (120) is equal to that of the downstream, and the ship sails out of the ship lock.

24. The method for operating a multi-stage flow channel power generation pump water circulation device according to claim 23, characterized in that: When the water in the lock chamber (130) of the last ship lock of the upward multi-stage lock (120) is discharged into the other lock chambers (130) of the upward multi-stage lock (120), if all ship locks of the upward multi-stage lock (120) are in working state, the inspection valve (321) of the power generation channel (320) corresponding to the last ship lock of the upward multi-stage lock (120) is opened, and the gates (390) on the most downstream side piers (330) of the left flow channel (311), the middle flow channel (312), and the right flow channel (313) are opened, and the water inlet gate (315) and the tailwater gate (316) of the main flow channel (310) are closed at the same time, and the downward multi-stage lock (110) is opened. ) is opened, and at the same time, the swing valves (370) at both ends of the corresponding water supply channel (360) are opened, and the water in the last ship lock of the upward multi-stage lock (120) flows in sequence through the power supply channel (320), the left flow channel (311), the middle flow channel (312), the right flow channel (313) and the water supply channel (360) corresponding to the last ship lock of the downward multi-stage lock (110), until the water level in the lock chamber (130) of the last ship lock of the upward multi-stage lock (120) is flush with that of the downstream, and the ship sails out of the lock.

25. The method for operating a multi-stage flow channel power generation pump water circulation device according to claim 22, characterized in that: When the middle flow channel (312) of the main flow channel (310) is not performing cross-region water adjustment between the left flow channel (311) and the right flow channel (313), the water inlet gate (315) and the tail water gate (316) are opened, and the main flow channel power generation device (500) generates electricity.

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