A two-way self-circulating water system for intake and outlet test of pumped storage power station

Abstract

The application discloses a kind of pumping storage power station hydraulic model test technical field for pumping storage power station intake and outlet test two-way self-circulation water system, to solve the pumping storage power station intake and outlet test in prior art, its system is more miscellaneous, structure is more complex, input is larger, and stability is difficult to guarantee.The problem of it includes model outer wall, self-circulation pipeline system, pump valve joint control system and measurement system;Model outer wall is equipped with intake and outlet;The application is applicable to pumping storage power station hydraulic model test, using common pump valve device, only one-way mixed flow pump and flowmeter are needed to realize the two-way flow of water flow in pumping storage power station intake and outlet test, and the structure is simple, the stability is high, the functionality is strong, optimizes and improves the hydraulic model test scheme of pumping storage power station intake and outlet, effectively reduces input cost, reduces test processing and implementation difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of for pumped storage power station intake and outlet test two-way self-circulation water system, belong to pumped storage power station hydraulic model test technical field. BACKGROUND

[0002] Pumped storage power station uses electric energy at the low load of electric power to draw water from lower reservoir to upper reservoir, and generates electricity by releasing water from upper reservoir to lower reservoir at the peak load of electric power, which is beneficial to efficient use of new energy resources, is the most mature and cost-effective energy storage technology for large-scale power storage technology, plays an important role in frequency modulation, peak shaving, phase modulation and power system stabilization. Intake and outlet, as the throat of pumped storage power station, are important hydraulic structures connecting reservoir area and power station units, with the characteristics of two-way flow. The hydraulic characteristics of intake and outlet are crucial and have a significant impact on the safe operation and economic benefits of pumped storage power station.

[0003] The common method for studying the hydraulic characteristics of pumped storage power station intake and outlet is hydraulic model test. According to the geometric similarity, motion similarity and dynamic similarity of fluid mechanics, the complex large-scale prototype reservoir area and intake and outlet can be scaled, simplified and reduced to laboratory for test research according to certain proportional relationship. The research method has strong implementability, and the test results have strong reliability.

[0004] The current traditional pumped storage power station intake and outlet test has certain limitations. Firstly, the model test reservoir basin structure is often local and scaled down, with water quantity much smaller than the prototype reservoir. The change of water level in a certain working condition of the prototype is negligible, while the test water level will rise or fall with the test, which cannot guarantee the stability of the test working condition water level. The common solution is to increase test investment and set multiple water tanks, reservoirs or overflow weirs on the upstream and downstream to ensure the stability of test conditions. Secondly, pumped storage power station intake and outlet has the characteristics of two-way flow. Currently, multiple independent pipe systems are used in combination with the above water storage and water measurement measures, with multiple water pumps and measurement equipment to complete the complete test of intake and outlet of the same intake and outlet. The system is complex, the structure is complex, the investment is large, and the stability is difficult to guarantee. Therefore, based on the characteristics of two-way flow of pumped storage power station intake and outlet test, an optimized, efficient, stable, simple and economical intake and outlet hydraulic model test system is urgently needed. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a two-way self-circulation water system for pumped storage power station intake and outlet test, which solves the problem of the current pumped storage power station intake and outlet test, which has a complex system, a complex structure, a large investment, and a difficult stability guarantee.

[0006] To solve the above technical problems, the present application is realized by using the following technical solutions:

[0007] In a first aspect, the present application provides a bidirectional self-circulation water system for intake and outlet test of pumped storage power station, comprising a model outer wall, a self-circulation pipeline system, a pump-valve joint control system and a measurement system.

[0008] The model outer wall is provided with an intake and outlet, one end of which is connected with the model outer wall and the other end of which extends to the outside of the model outer wall.

[0009] The self-circulation pipeline system comprises an outflow condition valve and an inflow condition valve, one end of each of the outflow condition valve and the inflow condition valve extending to the inside of the model outer wall.

[0010] The pump-valve joint control system comprises a unidirectional mixed flow pump, which is connected with valve one, valve two, valve three and valve four, the valve one and the valve two being connected with the intake and outlet, and the valve three and the valve four being connected with the outflow condition valve and the inflow condition valve.

[0011] The measurement system comprises a flow meter, which is arranged between the outflow condition valve and the valve four and simultaneously between the valve three and the inflow condition valve, and a water level gauge is arranged on the inner wall of the model outer wall at the side of the intake and outlet.

[0012] Further, a steady flow flower wall is arranged on the side of the inner wall of the model outer wall, the steady flow flower wall is provided with a reservoir, and the reservoir is in communication with the model outer wall through the steady flow flower wall.

[0013] One end of the intake and outlet is connected with the reservoir, and one end of each of the outflow condition valve and the inflow condition valve extends to between the model outer wall and the steady flow flower wall.

[0014] Further, the material of the intake and outlet is organic glass, and one end of the intake and outlet is connected with the inner wall bottom of the reservoir.

[0015] Further, a plurality of through holes are arranged at the bottom of the steady flow flower wall.

[0016] Further, one end of the outflow condition valve penetrates through the model outer wall and extends to the inner wall bottom of the model outer wall, and one end of the inflow condition valve extends to the inside of the model outer wall by crossing the top of the model outer wall.

[0017] Further, the unidirectional mixed flow pump is located at the center of the pump-valve combined control system, and the valve one, the valve two, the valve three and the valve four are distributed around the unidirectional mixed flow pump and connected with the unidirectional mixed flow pump.

[0018] In a second aspect, the application provides an operating method of the bidirectional self-circulating water system for the water inlet and outlet test of the pumped storage power station, which adopts the bidirectional self-circulating water system for the water inlet and outlet test of the pumped storage power station in the first aspect, and the method comprises the method steps in any one of method A and method B:

[0019] Method A:

[0020] The initial water level in the outer wall of the model is determined, the water level data is collected and monitored by using the water level gauge, and the water filling and discharging is stopped when the water level in the outer wall of the model is stabilized to the working water level;

[0021] The outflow working condition valve is opened, the valve one and the valve four are opened, the inflow working condition valve is closed, the valve two and the valve three are closed, the unidirectional mixed flow pump is opened, the opening degrees of the outflow working condition valve, the valve one and the valve four are adjusted, and the collected values of the flowmeter are observed and recorded until the flowmeter reading is stabilized to the required flow of the working condition;

[0022] After the water flow is stable and the water level in the outer wall of the model is stable, the observation of the water inlet and outlet test phenomenon and the measurement of the data are carried out, and after the test is completed, the unidirectional mixed flow pump, the outflow working condition valve, the inflow working condition valve, the valve one, the valve two, the valve three, the valve four, the water level gauge and the flowmeter are closed to restore the original state;

[0023] Method B:

[0024] The initial water level in the outer wall of the model is determined, the water level data is collected and monitored by using the water level gauge, and the water filling and discharging is stopped when the water level in the outer wall of the model is stabilized to the working water level;

[0025] The inflow working condition valve is opened, the valve two and the valve three are opened, the outflow working condition valve is closed, the valve one and the valve four are closed, the unidirectional mixed flow pump is opened, the opening degrees of the inflow working condition valve, the valve two and the valve three are adjusted, and the collected values of the flowmeter are observed and recorded until the flowmeter reading is stabilized to the required flow of the working condition;

[0026] After the water flow is stable and the water level in the outer wall of the model is stable, the observation of the water inlet and outlet test phenomenon and the measurement of the data are carried out, and after the test is completed, the unidirectional mixed flow pump, the outflow working condition valve, the inflow working condition valve, the valve one, the valve two, the valve three, the valve four, the water level gauge and the flowmeter are closed to restore the original state.

[0027] Compared with the prior art, the application has the following beneficial effects:

[0028] The bidirectional self-circulating water system for the water intake and outlet test of the pumped storage power station utilizes common pump valve devices, only needs a single-way mixed flow pump and a flow meter to realize the bidirectional flow of water in the water intake and outlet test of the pumped storage power station, does not need a water tank, a water storage pool and an overflow weir and the like to achieve the test condition of water level stability through the self-circulating water system, has simple structure, high stability and strong functionality, optimizes and improves the hydraulic model test scheme of the water intake and outlet of the pumped storage power station, effectively reduces the input cost and the test processing and implementation difficulty, and guarantees the practicability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a system schematic diagram of a bidirectional self-circulating water system for a water intake and outlet test of a pumped storage power station according to an embodiment of the present application;

[0030] Fig. 2 It is a water flow direction schematic diagram when the water intake and outlet is in an inflow working condition and an outflow working condition according to an embodiment of the present application.

[0031] In the figure: 1, water intake and outlet; 2, pool basin; 3, steady flow wall; 4, model outer wall; 5, outflow working condition valve; 6, inflow working condition valve; 7, flow meter; 8, valve one; 9, valve two; 10, valve three; 11, valve four; 12, single-way mixed flow pump; 13, water level instrument. DETAILED DESCRIPTION

[0032] The present application will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0033] In the description of the present application, it needs to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1:

[0035] like Figs. 1-2 As shown, this invention provides a bidirectional self-circulating water system for inlet and outlet tests of a pumped storage power station, including a model outer wall 4, a self-circulating pipeline system, a pump and valve joint control system, and a measurement system. The model outer wall 4 has inlet and outlet ports 1, one end of which is connected to the model outer wall 4, and the other end extends to the outside of the model outer wall 4. The self-circulating pipeline system includes an outflow valve 5 and an inflow valve 6, one end of which extends to the inside of the model outer wall 4. The pump and valve joint control system includes a unidirectional mixed-flow pump 12, which is simultaneously connected to valve 8, valve 9, valve 10, and valve 11. Valve 8 and valve 9 are both connected to the inlet and outlet ports 1. The valves 10 and 11 are connected to the outflow valve 5 and the inflow valve 6, respectively. The measurement system includes a flow meter 7, which is located between the outflow valve 5 and the valve 11. The flow meter 7 is also located between the valve 10 and the inflow valve 6. A water level gauge 13 is provided on the inner wall of the model outer wall 4 on one side of the inlet / outlet 1. A flow stabilizing wall 3 is provided on one side of the inner wall of the model outer wall 4. A reservoir 2 is provided inside the flow stabilizing wall 3. The reservoir 2 is connected to the model outer wall 4 through the flow stabilizing wall 3. One end of the inlet / outlet 1 is connected to the reservoir 2. One end of both the outflow valve 5 and the inflow valve 6 extends to the space between the model outer wall 4 and the flow stabilizing wall 3.

[0036] Specifically, first, the working condition is pre-set, water is added to the reservoir basin 2 in the model outer wall 4, and the initial water level is determined, the water level data is collected and monitored by the water level gauge 13, and the water filling / discharging is stopped when the water level in the reservoir basin 2 is stable to the working condition water level, at this time, the water inlet / outlet 1 working condition test is carried out; in the water inlet / outlet 1 inflow working condition, the water flow direction is from the water inlet / outlet 1 to the pump valve combined control system to the self-circulation pipeline system to the model outer wall 4, and then the water in the model outer wall 4 enters the reservoir basin 2 through the flow stabilizing flower wall 3 until the water levels in the model outer wall 4 and the reservoir basin 2 are equal, at this time, the inflow working condition valve 6 is opened, the valve two 9 and the valve three 10 are opened, the outflow working condition valve 5 is closed, the valve one 8 and the valve four 11 are closed, the one-way mixed flow pump 12 is opened, the opening degrees of the inflow working condition valve 6, the valve two 9 and the valve three 10 are adjusted and the collected values of the flowmeter 7 are observed and recorded until the reading of the flowmeter 7 is stable to the required flow of the working condition, when the water flow is stable and the water level in the model outer wall 4 is stable, the observation of the water inlet / outlet 1 test phenomenon and the measurement of the data are carried out, after the test, all the structures in the bidirectional self-circulation water system are closed, and the original state of the model is restored for the next test; in the water inlet / outlet 1 outflow working condition, the water flow direction is from the model outer wall 4 to the self-circulation pipeline system to the pump valve combined control system to the water inlet / outlet 1, and then the water in the reservoir basin 2 enters the model outer wall 4 through the flow stabilizing flower wall 3 until the water levels in the model outer wall 4 and the reservoir basin 2 are equal, when the water flow is stable and the water level in the model outer wall 4 is stable, the observation of the water inlet / outlet 1 test phenomenon and the measurement of the data are carried out, after the test, all the structures in the bidirectional self-circulation water system are closed, and the original state of the model is restored for the next test; wherein, the flow stabilizing flower wall 3 is used to buffer the water flow between the model outer wall 4 and the reservoir basin 2, to avoid that when the water inlet / outlet 1 is in the inflow or outflow state, the water flow in the reservoir basin 2 and the model outer wall 4 is too turbulent, thereby ensuring the stability of the device during operation and facilitating the experiment; wherein, the inflow and outflow design of the self-circulation pipeline system adopts a cross broken line shape, without multiple independent pipelines and only one flowmeter 7, which can meet the requirement that the flowmeter 7 is unidirectional in each working condition of bidirectional flow.

[0037] The present application uses common pump valve devices, only one one-way mixed flow pump 12 and flowmeter 7 are needed to realize the bidirectional flow of water in the water inlet / outlet 1 test of pumped storage power station, without water tank, reservoir and overflow weir, etc. to achieve the test conditions of water level stability through the self-circulation water system, the structure is simple, the stability is high, the functionality is strong, the water engineering model test scheme of the water inlet / outlet 1 of pumped storage power station is optimized and improved, the input cost is effectively reduced, the test processing and implementation difficulty is reduced, and an optimized, efficient, stable, simple and economical water engineering model test system of water inlet / outlet 1 is proposed, which ensures the practicability of the system.

[0038] In one embodiment, the inlet / outlet 1 is made of plexiglass. One end of the inlet / outlet 1 is connected to the bottom of the inner wall of the reservoir 2. The bottom of the flow stabilizing flower wall 3 has multiple through holes. The use of plexiglass for the inlet / outlet 1 facilitates manufacturing and observation of experimental phenomena. Its leading edge is connected to the bottom of the reservoir 2. Optionally, the reservoir 2 may have a certain topography. The bottom of the flow stabilizing flower wall 3 has a porous structure. In the absence of complex measures such as water tanks, reservoirs, or overflow weirs, it can ensure stable inflow or outflow conditions of the reservoir 2 and the inlet / outlet 1 in the test area, providing a stable test environment for the circulation system.

[0039] In one embodiment, one end of the outflow valve 5 penetrates through the outer wall 4 of the model and extends to the bottom of the inner wall of the outer wall 4; one end of the inflow valve 6 crosses the top of the outer wall 4 of the model and extends to the inner side of the outer wall 4 of the model, so that the only unidirectional mixed flow pump 12 in the system of this application can ensure reasonable pressure and normal operation on both sides of the pumping in bidirectional flow, thus ensuring the stability of the device during operation.

[0040] In one embodiment, the unidirectional mixed-flow pump 12 is located at the center of the pump-valve combined control system, and the valve 1 8, the valve 2 9, the valve 3 10 and the valve 4 11 are respectively distributed around the unidirectional mixed-flow pump 12 and connected to the unidirectional mixed-flow pump 12.

[0041] Specifically, in the pump-valve combined control system, the relative positions of the pumps and valves are arranged in an "I" shape, with the unidirectional mixed flow pump 12 located in the center and the pumping direction being from bottom to top. Valve 1 8, valve 2 9, valve 3 10 and valve 4 11 are connected to the water pump on all four sides. The direction and flow rate of the system water can be adjusted by adjusting the opening and closing of each valve. Example 2:

[0042] This invention provides an operating method for a bidirectional self-circulating water system used in inlet and outlet tests of a pumped storage power station. The method is characterized by employing the bidirectional self-circulating water system described in claim 1, and includes the steps of either method A or method B.

[0043] Method A:

[0044] Predetermine the required working conditions, determine the initial water level inside the outer wall 4 of the model, collect and monitor the water level data using the water level gauge 13, and stop filling / draining water when the water level inside the outer wall 4 of the model stabilizes to the working condition water level. Then start the bidirectional self-circulating water system to conduct the working condition test of the inlet and outlet 1.

[0045] In the outflow condition of the inlet and outlet 1, the water flow direction is the model outer wall 4 - the self-circulation pipeline system - the pump and valve combined control system - the inlet and outlet 1, the outflow condition valve 5 is opened, the valve one 8 and the valve four 11 are opened, the inflow condition valve 6 is closed, the valve two 9 and the valve three 10 are closed, the unidirectional mixed flow pump 12 is opened at the same time to prevent the water pump from pumping water with air, the opening degrees of the outflow condition valve 5, the valve one 8 and the valve four 11 are adjusted, and the collected values of the flowmeter 7 are observed and recorded until the reading of the flowmeter 7 is stable to the required flow of the condition;

[0046] When the water flow is stable and the water level in the model outer wall 4 is stable, the observation of the test phenomenon of the inlet and outlet 1 and the measurement of the data are carried out, and after the test is completed, the unidirectional mixed flow pump 12, the outflow condition valve 5, the inflow condition valve 6, the valve one 8, the valve two 9, the valve three 10, the valve four 11, the water level instrument 13 and the flowmeter 7 are closed to restore the original state.

[0047] Method B:

[0048] The required condition is determined in advance, the initial water level in the model outer wall 4 is determined, the water level data is collected and monitored by using the water level instrument 13, the water is stopped when the water level in the model outer wall 4 is stable to the condition water level, the bidirectional self-circulation water system is opened to carry out the condition test of the inlet and outlet 1.

[0049] In the inflow condition of the inlet and outlet 1, the water flow direction is the inlet and outlet 1 - the pump and valve combined control system - the self-circulation pipeline system - the model outer wall 4, the inflow condition valve 6 is opened, the valve two 9 and the valve three 10 are opened, the outflow condition valve 5 is closed, the valve one 8 and the valve four 11 are closed, the unidirectional mixed flow pump 12 is opened at the same time to prevent the water pump from pumping water with air, the opening degrees of the inflow condition valve 6, the valve two 9 and the valve three 10 are adjusted, and the collected values of the flowmeter 7 are observed and recorded until the reading of the flowmeter 7 is stable to the required flow of the condition.

[0050] When the water flow is stable and the water level in the model outer wall 4 is stable, the observation of the test phenomenon of the inlet and outlet 1 and the measurement of the data are carried out, and after the test is completed, the unidirectional mixed flow pump 12, the outflow condition valve 5, the inflow condition valve 6, the valve one 8, the valve two 9, the valve three 10, the valve four 11, the water level instrument 13 and the flowmeter 7 are closed to restore the original state.

[0051] As can be seen from the above, the bidirectional self-circulation water system can provide a stable test environment and realize bidirectional flow.

[0052] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A method of operating a bi-directional self-circulating water system for pump storage power plant intake test, characterized in that, The model outer wall (4), a self-circulation pipeline system, a pump-valve combined control system and a measurement system are included. The model outer wall (4) is internally provided with an inlet and outlet water port (1), one end of the inlet and outlet water port (1) is connected with the model outer wall (4), and the other end extends to the outside of the model outer wall (4). The self-circulation pipeline system includes an outflow working condition valve (5) and an inflow working condition valve (6), one end of the outflow working condition valve (5) and the inflow working condition valve (6) extends to the inside of the model outer wall (4). The pump-valve combined control system includes a one-way mixed flow pump (12), the one-way mixed flow pump (12) is simultaneously connected with a valve one (8), a valve two (9), a valve three (10) and a valve four (11), the valve one (8) and the valve two (9) are connected with the inlet and outlet water port (1), the valve three (10) and the valve four (11) are connected with the outflow working condition valve (5) and the inflow working condition valve (6). The measurement system includes a flowmeter (7), the flowmeter (7) is arranged between the outflow working condition valve (5) and the valve four (11), the flowmeter (7) is simultaneously located between the valve three (10) and the inflow working condition valve (6), and an internal wall of the model outer wall (4) is provided with a water level gauge (13) on one side of the inlet and outlet water port (1). The one-way mixed flow pump (12) is located at the central position of the pump-valve combined control system, the valve one (8), the valve two (9), the valve three (10) and the valve four (11) are respectively distributed around the one-way mixed flow pump (12) and connected with the one-way mixed flow pump (12). The operation method includes any one of method A and method B: Method A: The initial water level in the model outer wall (4) is determined, the water level data is collected and monitored by using the water level gauge (13), and the water filling and discharging is stopped when the water level in the model outer wall (4) is stable to the working condition water level; The outflow working condition valve (5) is opened, the valve one (8) and the valve four (11) are opened, the inflow working condition valve (6) is closed, the valve two (9) and the valve three (10) are closed, the one-way mixed flow pump (12) is opened, the opening degrees of the outflow working condition valve (5), the valve one (8) and the valve four (11) are adjusted, and the flowmeter (7) collection value is observed and recorded until the flowmeter (7) reading is stable to the working condition required flow; After the water flow is stable and the water level in the model outer wall (4) is stable, the observation of the inlet and outlet water port (1) test phenomenon and the measurement of the data are carried out, and after the test is completed, the one-way mixed flow pump (12), the outflow working condition valve (5), the inflow working condition valve (6), the valve one (8), the valve two (9), the valve three (10), the valve four (11), the water level gauge (13) and the flowmeter (7) are closed, and the original state is restored; Method B: The initial water level in the model outer wall (4) is determined, the water level data is collected and monitored by using the water level gauge (13), and the water filling and discharging is stopped when the water level in the model outer wall (4) is stable to the working condition water level; Open the inlet flow condition valve (6), open valve two (9) and valve three (10), close the outlet flow condition valve (5), close valve one (8) and valve four (11), open the one-way mixed flow pump (12), adjust the opening of the inlet flow condition valve (6), valve two (9) and valve three (10) and observe and record the flow meter (7) acquisition value until the flow meter (7) reading is stable to the required flow of the working condition; When the water flow is stable and the water level in the model outer wall (4) is stable, the observation of the inlet and outlet water inlet (1) test phenomenon and the measurement of the data are carried out, after the test, the one-way mixed flow pump (12), the outlet flow condition valve (5), the inlet flow condition valve (6), the valve one (8), the valve two (9), the valve three (10), the valve four (11), the water level instrument (13) and the flow meter (7) are closed, and the original state is restored.

2. The method of operating a bidirectional self-circulating water system for pumped storage power plant intake test according to claim 1, characterized in that, The inner wall of the model outer wall (4) is provided with a steady flow flower wall (3), the steady flow flower wall (3) is provided with a library basin (2), and the library basin (2) is communicated with the model outer wall (4) through the steady flow flower wall (3). One end of the inlet and outlet water inlet (1) is connected with the library basin (2), and one end of the outlet flow condition valve (5) and the inlet flow condition valve (6) extends between the model outer wall (4) and the steady flow flower wall (3).

3. The method of operating a bidirectional self-circulating water system for pumped storage power plant intake test according to claim 2, characterized in that, The material of the inlet and outlet water inlet (1) is organic glass, and one end of the inlet and outlet water inlet (1) is connected with the inner wall bottom of the library basin (2).

4. The method of operating a bidirectional self-circulating water system for pumped storage power plant intake test according to claim 2, wherein, A plurality of through holes are formed in the bottom of the steady flow flower wall (3).

5. The method of operating a bidirectional self-circulating water system for pumped storage power plant intake test of claim 1, wherein, One end of the outlet flow condition valve (5) penetrates the model outer wall (4) and extends to the inner wall bottom of the model outer wall (4); one end of the inlet flow condition valve (6) crosses the top of the model outer wall (4) and extends to the inner side of the model outer wall (4).

Images