Construction method of water delivery valve model

Abstract

The invention relates to the field of ship locks, in particular to a construction method of a water delivery valve model, which comprises the following steps of: selecting a valve with the most unfavorable working condition as a research object, constructing the model through a similarity principle, providing support for a flat plate type valve through a first guide wheel and a second guide wheel, and being capable of bearing pressure in two directions; non-constant flowing water characteristics and cavitation characteristics during valve operation are detected, valve model resistance is corrected by introducing hydraulic parameters of a ship lock water delivery system overall model, the model can be locally optimized based on a corrected model resistance coefficient, and the resistance coefficient is reduced.

Description

Technical Field

[0001] The present invention relates to the field of ship locks, and particularly to a method for constructing a water conveyance valve model. Background Art

[0002] A ship lock is a device used to allow ships to pass between river channels or canals with different water levels. Its working principle is similar to a water-filled gate, which controls the water flow to raise or lower the position of the ship, enabling it to move safely from one water level to another. When adjusting the water level in the ship lock, water is conveyed into (raising the water level) or drained from (lowering the water level) the ship lock.

[0003] The water conveyance valve is one of the key components for controlling water flow in a ship lock. During the operation of the ship lock, the function of the water conveyance valve is to allow water to flow into or out of the lock chamber when the water level in the lock chamber needs to be adjusted. The water conveyance valve is large in design size and fast in opening and closing speed. To ensure the safe operation of the water conveyance valve in the ship lock, it is necessary to conduct a comprehensive study on the non-steady flow water characteristics and cavitation characteristics under normal operation and accident conditions of the valve.

[0004] Therefore, a water conveyance valve model is constructed to simulate and optimize the water flow control mechanism in the ship lock system. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for constructing a water conveyance valve model for the problem that the existing water conveyance valve is one of the key components for controlling water flow in a ship lock, the water conveyance valve is large in design size and fast in opening and closing speed, and to ensure the safe operation of the water conveyance valve in the ship lock, it is necessary to construct a water conveyance valve model to simulate and optimize the water flow control mechanism in the ship lock system.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, the present invention provides a method for constructing a water conveyance valve model, including the following steps:

[0008] Determine the connecting valve of the surge tank under the most unfavorable working condition as the research object, and the model test range;

[0009] The model includes a surge tank, an upstream connecting corridor, a connecting valve test working section, a downstream connecting corridor, and a lock chamber connected in sequence. The connecting valve test working section includes a gooseneck pipe turning section, a pre-valve corridor, a valve, and a post-valve corridor. The model adopts geometric boundary similarity of the valve working section, valve movement similarity, inertial conversion length similarity of the pre-valve and post-valve corridors of the valve, water flow resistance similarity before and after the valve, and adjustable system resistance coefficient;

[0010] Determine the scale of the non-steady flow atmospheric pressure model of the valve hydraulics;

[0011] The valve adopts a flat valve with double-sided water stop, which can withstand bidirectional water heads. The first guide wheel is installed in the gate slot in the direction perpendicular to the water flow, and the second guide wheel is installed in the direction along the water flow.

[0012] Several pressure sensors are provided in the connecting valve test working section.

[0013] Taking the hydraulic parameters of the overall model of the lock water conveyance system applied by this water conveyance valve as the reference basis, the resistance of the valve model is corrected by adjusting the opening of the resistance regulating valve in the downstream water conveyance corridor.

[0014] Based on the corrected model resistance coefficient, the model is optimized, and the inner turning radius and outer turning radius of the bend section of the gooseneck pipe are adjusted.

[0015] Adopting the construction method of a water conveyance valve model described in the present invention, selecting the valve under the most unfavorable working conditions as the research object, constructing the model through the similarity principle, providing support for the flat valve through the first guide wheel and the second guide wheel, being able to bear pressure in both directions, detecting the non-steady flow water characteristics and cavitation characteristics during the operation of the valve by setting pressure sensors on the model, correcting the resistance of the valve model by introducing the hydraulic parameters of the overall model of the lock water conveyance system, and locally optimizing the model based on the corrected model resistance coefficient to reduce the resistance coefficient.

[0016] As a preferred technical solution of the present invention, the lock adopts a three-stage pool-saving layout, and the pool-saving pools are all arranged on one side of the lock chamber. Among them, the first-stage and third-stage pool-saving pools are overlapped, the second-stage pool-saving pool is arranged separately, and the connecting valve of the third-stage pool-saving pool has the smallest initial submergence depth and the worst working conditions during filling. The connecting valve of the third-stage pool-saving pool is taken as the research object.

[0017] As a preferred technical solution of the present invention, after determining the scale ratio λ of the non-steady flow normal pressure model of the valve hydraulics L the scale ratios of various physical quantities are calculated, where:

[0018] Time scale ratio λ t =λ L 1 / 2

[0019] Velocity scale ratio λ v =λ L 1 / 2

[0020] Flow rate scale ratio λ Q =λ L 5 / 2

[0021] Pressure scale ratio λ P =λ L

[0022] Force scale ratio λ F= λ L 3 。

[0023] As a preferred technical solution of the present invention, the water storage pool and the lock chamber are simulated by a steel plate reservoir, the upstream connecting corridor is simulated by a steel box, and the working section of the connecting valve test is made of plexiglass for observing the water flow pattern.

[0024] As a preferred technical solution of the present invention, the working section of the connecting valve test is provided with a main valve, and first guide wheels are respectively arranged at the top and bottom on both sides of the main valve, and a plurality of second guide wheels are arranged between the first guide wheels at the top and bottom.

[0025] As a further preferred technical solution of the present invention, the working section of the connecting valve test is provided with a standby valve, the main valve is located on the side of the water storage pool, and the standby valve is located on the side of the lock chamber.

[0026] As a preferred technical solution of the present invention, in the model test, a pressure sensor and a tension and compression sensor are respectively used to measure the non-steady flow pressure in the corridor and the valve opening and closing force characteristics, and a dynamic signal test and analysis system is used to complete the acquisition and analysis of the non-steady flow signals of the pressure in the corridor section before and after the valve, the water levels in the lock chamber and the water storage pool, and the valve opening and closing force.

[0027] As a further preferred technical solution of the present invention, a #1 pressure sensor is provided at the inner turning midpoint of the top surface center line of the turning section of the gooseneck pipe. At the outer turning of the bottom surface center line of the turning section of the gooseneck pipe, #15, #16, #17, and #18 pressure sensors are sequentially arranged. On the top surface center line of the valve-front corridor section, #2, #3, #4, and #5 pressure sensors are sequentially arranged. On the bottom surface center line of the valve-front corridor section, #19, #20, #21, and #22 pressure sensors are sequentially arranged. On the vertical center line of the main valve, #40, #41, and #42 pressure sensors are sequentially arranged from bottom to top, and on the side close to the water storage tank. On the vertical center line of the standby valve, #43, #44, and #45 pressure sensors are sequentially arranged from bottom to top, and on the side close to the water storage tank. On the top surface center line and the bottom surface center line of the corridor between the main valve and the standby valve, #6 and #23 pressure sensors are respectively provided. On the top surface center line and the bottom surface center line of the corridor behind the standby valve, #7 and #24 pressure sensors are respectively provided. In the valve-rear Y-shaped branch corridor section, the inner side wall is short and the outer side wall is long. On the top surface center line, #8, #9, #10, #11, #12, #13, and #14 pressure sensors are sequentially arranged. On the bottom surface center line, #25, #26, #27, #28, #29, #30, and #31 pressure sensors are sequentially arranged. On the outer side wall, #32, #33, #34, #35, and #36 pressure sensors are sequentially arranged. On the inner side wall, #37, #38, and #39 pressure sensors are sequentially arranged. Among them, the positions of the #8, #25, #32, and #37 pressure sensors correspond to each other, the positions of the #10, #27, #33, and #38 pressure sensors correspond to each other, the positions of the #12, #29, #34, and #39 pressure sensors correspond to each other, the positions of the #13, #30, and #35 pressure sensors correspond to each other, the positions of the #14, #31, and #36 pressure sensors correspond to each other. A #46 tension-compression sensor is provided on the suspension rod of the main valve, and a #47 tension-compression sensor is provided on the suspension rod of the standby valve.

[0028] In this way, by arranging pressure sensors on the top surface and the bottom surface of each section in the test section of the connecting valve, and on the side walls of the sections with complex shapes, the water pressure at each section and each time node is accurately measured, and then the pressure change process line is calculated and drawn for the analysis of the water pressure characteristics of the corridor.

[0029] As a preferred technical solution of the present invention, after the calibration of the resistance coefficient of the water conveyance valve model, the original design structures of the valve-front corridor section, the valve chamber, the maintenance valve chamber, and the valve-rear corridor section in the test section of the connecting valve do not need to be adjusted. Only the inner and outer turning radii of the original design of the turning section of the gooseneck pipe are increased to reduce the resistance of the turning section of the gooseneck pipe.

[0030] In the second aspect, the present invention also provides a water conveyance valve model constructed by the construction method of the water conveyance valve model as described in any one of the above.

[0031] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0032] A method for constructing a water conveyance valve model according to the present invention selects the most unfavorable working condition valve as the research object, constructs the model through the similarity principle, provides support for the flat valve through the first guide wheel and the second guide wheel, can bear pressure in both directions, detects the non-constant flow water characteristics and cavitation characteristics during the operation of the valve by setting pressure sensors on the model, corrects the resistance of the valve model by introducing the hydraulic parameters of the overall model of the lock water conveyance system, and can locally optimize the model based on the corrected model resistance coefficient to reduce the resistance coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the test range of the water conveyance valve model in the lock system;

[0034] Figure 2 Schematic three-dimensional structure diagram of the water conveyance valve model;

[0035] Figure 3 Schematic two-dimensional elevation diagram of the water conveyance valve model;

[0036] Figure 4 Schematic two-dimensional plan diagram of the water conveyance valve model;

[0037] Figure 5 For Figure 3 Schematic diagram of the local structure in;

[0038] Figure 6 Schematic diagram of the test physical object of the water conveyance valve model Figure 1 ;

[0039] Figure 7 Schematic diagram of the test physical object of the water conveyance valve model Figure 2 ;

[0040] Figure 8 Schematic diagram of the structure of the main valve;

[0041] Figure 9 For Figure 8 A-A cross-sectional view in;

[0042] Figure 10 Schematic diagram of the test physical object of the main valve;

[0043] Figure 11 Schematic diagram of the measuring point layout of the water conveyance valve model;

[0044] Figure 12 Schematic diagram of the water level process line of the water-saving pool and the lock chamber;

[0045] Figure 13 Schematic diagram of the flow rate process line of the water-saving pool and the lock chamber;

[0046] Figure 14 It is a schematic diagram of the pressure process line at the measuring point in front of the valve of the water-saving pool and the gate chamber;

[0047] Figure 15 It is a schematic diagram of the pressure process line at the measuring point behind the valve of the water-saving pool and the gate chamber;

[0048] Figure 16 It is a schematic structural diagram of the partial optimization of the water conveyance valve model.

[0049] Markings in the figure:

[0050] 1 - Three - level water - saving pool;

[0051] 2 - Upstream connection corridor;

[0052] 3 - Three - level connection valve test working section, 31 - Main valve, 311 - First guide wheel, 312 - Second guide wheel, 32 - Spare valve;

[0053] 4 - Downstream connection corridor;

[0054] 5 - Gate chamber. Specific implementation manner

[0055] The present invention will be further described in detail below in combination with test examples and specific implementation manners. However, it should not be understood that the scope of the above - mentioned subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0056] In the description of the specific embodiments of the present invention, without special explanation, the expression terms of the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / equipment / device is commonly used and placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0057] In addition, when terms such as "horizontal", "vertical", "hanging", and "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0058] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0059] In addition, in the description of the embodiments of the present invention, "several", "multiple", and "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation of more than 9.

[0060] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "linked", "provided with", "laid", "arranged" appear, they 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 connection means commonly used in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0061] In the related art, the water conveyance valve is one of the key components for controlling the water flow in the lock. The water conveyance valve has a large design size and a fast opening and closing speed. To ensure the safe operation of the water conveyance valve in the lock, it is necessary to construct a water conveyance valve model to simulate and optimize the water flow control mechanism in the lock system. For this reason, the technical solution of this application is generated. The following will be described in conjunction with Figures 1 to 16 be elaborated.

[0062] Embodiment 1

[0063] A method for constructing a water conveyance valve model according to the present invention includes the following steps:

[0064] A double-line ship lock adopts a three-stage water-saving pool layout. The water-saving pools are all arranged on one side of the lock chamber. Among them, the first-stage and third-stage water-saving pools are arranged overlappingly, and the second-stage water-saving pool is arranged separately. The water area of each water-saving pool of the ship lock is larger than that of the lock chamber water area, and the water-saving rate is high. According to the design water level data, the first-stage water-saving pool adapts to the water level change of 49.15 - 57.76m, the second-stage water-saving pool has a water level change of 44.10 - 51.88m, and the third-stage water-saving pool has a water level change of 39.05 - 46.00m. When the ship lock saves water, the initial water heads of each water conveyance valve are equal. The connecting valve of the third-stage water-saving pool has the smallest initial submerged depth during filling, and the working conditions are the worst. Therefore, the connecting valve of the third-stage water-saving pool is taken as the research object to carry out the research on the hydrodynamic problems of the water conveyance valve. In the actual project, the water-saving pool enters the lock chamber through two water inlets. The test simulates one of the water inlets and its downstream flow path, as Figure 1 shown.

[0065] As Figure 2 shown, the main components of the model include three-stage water-saving pools 1, upstream connecting corridors 2, three-stage connecting valve test working sections 3, downstream connecting corridors 4, and lock chambers 5 connected in sequence. The model satisfies the geometric boundary similarity of the valve working section, valve movement similarity, inertial conversion length similarity of the corridors before and after the valve, water flow resistance similarity before and after the valve, and adjustable system resistance coefficient.

[0066] According to the basic design parameters of the ship lock and the on-site conditions of the test hall, the scale of the hydrodynamic unsteady flow normal pressure model of the water conveyance valve is determined. In this embodiment, the scale is 1:13.35. The overall layout of the model is as Figures 3 to 5 shown. The design of the water conveyance valve model satisfies the gravity similarity criterion. The relationship between the scale of each physical quantity and the geometric scale is as follows:

[0067]

[0068] The three-stage water-saving pools 1 and lock chambers 5 are simulated by steel plate reservoirs. The model area is obtained by converting half of the prototype area according to the scale. The area ratio of the three-stage water-saving pools 1 to the lock chambers 5 is 1.4:1.0. In order to accurately reflect the incoming flow conditions and the water flow characteristics in the valve area, the area from the water inlet to the first-stage diversion port of the model is geometrically similar to the prototype. The upstream connecting corridor 2 is simulated by a steel box; the three-stage connecting valve test working section 3 includes a gooseneck pipe turning section, a pre-valve corridor section, a valve well, a maintenance valve well, and a post-valve corridor section, all made of plexiglass materials to observe the water flow pattern, as Figure 6 and Figure 7 shown. The main valve 31 is installed in the valve well, and the standby valve 32 is installed in the maintenance valve well, as Figure 5As shown in the figure; the downstream connecting corridor 4 includes a four-way section and a steel pipe section. The four-way section is used to connect the steel pipe section with the valve sections of the first-stage water-saving pool, the second-stage water-saving pool, and the third-stage water-saving pool 1. Among them, the ports connecting the valve sections of the first-stage water-saving pool and the second-stage water-saving pool are blocked; the top of the gooseneck pipe turning section is connected to the bottom of the upstream connecting corridor 2, the post-valve corridor section is connected to the four-way section of the downstream connecting corridor 4, and the steel pipe section of the downstream connecting corridor 4 is connected to the lock chamber 5.

[0069] Both the main valve 31 and the standby valve 32 are made of red plexiglass. The valves are flat-panel valves, and the valves are geometrically similar to the prototype in shape. In the gate slot, the first guide wheel 311 is installed in the direction perpendicular to the water flow, and the second guide wheel 312 is installed in the direction along the water flow, as Figures 8 to 10 shown. The weight of the valve is 38.5 kg, and the converted gravity of the prototype is 897.7 kN. The opening and closing rods of the valve model are made of stainless steel pipes.

[0070] Both the main valve 31 and the standby valve 32 adopt double-sided water stop and can withstand bidirectional water heads. Under normal circumstances, the standby valve 32 is fully open and used as a maintenance gate, and the main valve 31 undertakes the functions of filling and discharging water. In case of a failure of the main valve 31, the standby valve 32 undertakes the functions of filling and discharging water. The main valve 31 is located on the side of the water-saving pool, and the standby valve 32 is located on the side of the lock chamber 5.

[0071] In order to ensure that the opening and closing characteristics of the valve are similar to those of the prototype, a stepping motor is used in the model to control the opening and closing of the valve, and a special automatic control system for valve opening and closing is developed, which can adjust the valve stroke, opening and closing speed, and acceleration.

[0072] In the atmospheric pressure model test, high-precision pulsating pressure sensors and tension and compression sensors are used to measure the non-steady flow pressure in the corridor and the opening and closing force characteristics of the valve respectively. The dynamic signal test and analysis system is used to complete the acquisition and analysis of the non-steady flow signals of the pressure in the corridor sections before and after the valve, the water levels in the lock chamber and the water-saving pool, and the opening and closing force of the valve.

[0073] In order to obtain the pressure distribution characteristics of the valve section corridor, a total of 47 pulsating pressure sensors are arranged at the top of the valve section corridor, the bottom of the corridor, the gooseneck pipe turning section, the maintenance gate slot and other parts. Measuring points are arranged along the top, bottom of the upstream / downstream corridor of the water conveyance valve and inside the valve gate slot. In addition, pressure sensors are also installed in the post-valve bifurcated pipe section to assist in judging the flow uniformity of the bifurcated pipe section, as Figure 11 shown.

[0074] Among them, a #1 pressure sensor is set at the inner turning midpoint of the top surface center line of the gooseneck pipe turning section, and #15, #16, #17, and #18 pressure sensors are sequentially set at the outer turning of the bottom surface center line of the gooseneck pipe turning section. #2, #3, #4, and #5 pressure sensors are sequentially set on the top surface center line of the valve front corridor section, and #19, #20, #21, and #22 pressure sensors are sequentially set on the bottom surface center line of the valve front corridor section. #40, #41, and #42 pressure sensors are sequentially set from bottom to top on the vertical center line of the main valve 31, and close to the side of the water storage tank. #43, #44, and #45 pressure sensors are sequentially set from bottom to top on the vertical center line of the standby valve 32, and close to the side of the water storage tank. #6 and #23 pressure sensors are respectively arranged on the top surface center line and the bottom surface center line of the corridor between the main valve 31 and the standby valve 32. #7 and #24 pressure sensors are respectively arranged on the top surface center line and the bottom surface center line of the corridor behind the standby valve 32. In the valve rear Y-shaped branch corridor section, the inner wall is short and the outer wall is long. #8, #9, #10, #11, #12, #13, and #14 pressure sensors are sequentially set on the top surface center line, and #25, #26, #27, #28, #29, #30, and #31 pressure sensors are sequentially set on the bottom surface center line. #32, #33, #34, #35, and #36 pressure sensors are sequentially arranged on the outer wall, and #37, #38, and #39 pressure sensors are sequentially arranged on the inner wall. Among them, the positions of the #8, #25, #32, and #37 pressure sensors correspond, the positions of the #10, #27, #33, and #38 pressure sensors correspond, the positions of the #12, #29, #34, and #39 pressure sensors correspond, the positions of the #13, #30, #35 pressure sensors correspond, and the positions of the #14, #31, and #36 pressure sensors correspond.

[0075] The opening and closing force of the valve is measured by a high-precision tension and compression sensor, which is directly connected to the suspension rod. A #46 tension and compression sensor is set on the suspension rod of the main valve 31, and a #47 tension and compression sensor is set on the suspension rod of the standby valve 32.

[0076] Taking the hydraulic parameters of the 1:30 overall model of the ship lock water conveyance system as the reference basis, the resistance of the valve hydraulic normal pressure model is corrected by adjusting the opening of the resistance regulating valve in the downstream water conveyance corridor.

[0077] The test conditions are the highest water head and the valve running at the designed speed. The measured process curves of the chamber water level, calculated flow rate, pressure at the valve front measuring point, and pressure at the valve rear measuring point of the valve hydraulic model and the overall model of the water conveyance system are compared as Figures 12 to 15 shown.

[0078] Through Figures 12 to 15 the calibration of the resistance coefficient of the water conveyance valve model shown, the model is locally optimized. In this embodiment, the original designed structures at positions such as the valve front corridor section, valve chamber, maintenance valve chamber, and valve rear corridor section of the three-stage connected valve test working section 3 do not need to be adjusted, asFigure 16 As shown in the figure, the original designed inner turning radius R1 of the gooseneck pipe turning section in front of the valve of the three - stage connected valve test working section 3 is 2 m, and the outer turning radius R2 is 8 m. The discharge resistance coefficient after calibration is 0.804. In order to further improve the water conveyance efficiency and reduce the resistance of the gooseneck pipe turning section, R1 is optimized and adjusted to 4 m, and R2 is optimized and adjusted to 14 m. The discharge resistance coefficient after optimization is 0.701, which can achieve the optimization purpose.

[0079] For a method for constructing a water conveyance valve model in this embodiment, the most unfavorable condition valve is selected as the research object, and the model is constructed through the similarity principle. The first guide wheel 311 and the second guide wheel 312 provide support for the flat valve, which can bear pressure in both directions. By setting pressure sensors on the model, the non - steady flow water characteristics and cavitation characteristics during the operation of the valve are detected. By introducing the hydraulic parameters of the overall model of the lock water conveyance system to correct the resistance of the valve model, based on the corrected model resistance coefficient, the model can be locally optimized to reduce the resistance coefficient.

[0080] Embodiment 2

[0081] As Figures 1 to 16 shown, a water conveyance valve model of the present invention is constructed by the method for constructing a water conveyance valve model as described in Embodiment 1.

[0082] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for constructing a water delivery valve model, characterized in that: The following steps are involved: Determine the connecting valve of the water-saving tank under the most unfavorable working condition as the research object, as well as the scope of the model test; The model includes a water-saving tank, an upstream connecting corridor (2), a connecting valve test working section, a downstream connecting corridor (4), and a gate chamber (5) connected in sequence. The connecting valve test working section includes a gooseneck pipe turning section, a corridor before the valve, a valve, and a corridor after the valve. The model adopts similar geometric boundaries of the valve working section, similar valve movements, similar inertia conversion lengths of the corridors before and after the valve, similar water flow resistance before and after the valve, and an adjustable system resistance coefficient. Determine the scale of the valve hydraulics non-steady flow constant pressure model; The valve adopts a flat valve, double-sided water stop, and can withstand bidirectional water head. A first guide wheel (311) is installed in the gate groove in the direction perpendicular to the water flow, and a second guide wheel (312) is installed in the direction along the water flow. Several pressure sensors are provided in the test working section of the Unicom valve; The hydraulic parameters of the overall model of the ship lock water delivery system used by the water delivery valve are used as a reference, and the valve model resistance is corrected by adjusting the opening of the downstream water delivery gallery resistance regulating valve. The model is optimized based on the corrected model drag coefficient, and the inner turning radius and outer turning radius of the gooseneck turning section are adjusted.

2. The method for constructing a water delivery valve model according to claim 1, characterized in that: The ship lock adopts a three-level water-saving tank arrangement, and the water-saving tanks are all arranged on one side of the lock chamber. The first and third level water-saving tanks are arranged overlappingly, and the second level water-saving tank is arranged separately. The connecting valve of the third level water-saving tank has the smallest initial submergence depth when filled with water and the worst working conditions. The connecting valve of the third level water-saving tank is taken as the research object.

3. The method for constructing a water delivery valve model according to claim 1, characterized in that: Determine the scale λ of the valve hydraulics non-steady flow constant pressure model L After that, the scales of various physical quantities are calculated, where: Time scale λ t =λ L 1 / 2 Speed ​​scale λ v =λ L 1 / 2 Flow rate scale λ Q =λ L 5 / 2 Pressure scale λ P =λ L Force scale λ F =λ L 3 .

4. The method for constructing a water delivery valve model according to claim 1, characterized in that: The water-saving pool and the lock chamber (5) are simulated by steel plate reservoirs, the upstream connecting corridor (2) is simulated by a steel box, and the connecting valve test working section is simulated by organic glass.

5. The method for constructing a water delivery valve model according to claim 1, characterized in that: The connecting valve test working section is provided with a main valve (31), the top and bottom ends of both sides of the main valve (31) are respectively provided with first guide wheels (311), and a plurality of second guide wheels (312) are provided between the first guide wheels (311) at the top and bottom ends.

6. The method for constructing a water delivery valve model according to claim 5, characterized in that: The connecting valve test working section is provided with a spare valve (32), the main valve (31) is located on the water saving tank side, and the spare valve (32) is located on the gate chamber (5) side.

7. The method for constructing a water delivery valve model according to claim 1, characterized in that: In the model test, pressure sensors and tension and compression sensors are used to measure the non-constant flow pressure of the corridor and the valve opening and closing force characteristics respectively, and a dynamic signal test and analysis system is used to complete the collection and analysis of the pressure of the corridor section before and after the valve, the water level of the gate chamber (5) and the water-saving pool, and the non-constant flow signal of the valve opening and closing force.

8. The method for constructing a water delivery valve model according to claim 7, characterized in that: A 1# pressure sensor is arranged at the inner turning midpoint of the top centerline of the gooseneck turning section, 15#, 16#, 17#, 18# pressure sensors are arranged in sequence at the outer turning of the bottom centerline of the gooseneck turning section, 2#, 3#, 4#, 5# pressure sensors are arranged in sequence on the top centerline of the corridor section in front of the valve, 19#, 20#, 21#, 22# pressure sensors are arranged in sequence on the bottom centerline of the corridor section in front of the valve, and 40#, 41#, 42# pressure sensors are arranged in sequence from bottom to top on the vertical centerline of the main valve (31). #, 42# pressure sensors are arranged on the middle line of the spare valve (32) from bottom to top, and near the side of the water-saving tank, 43#, 44#, 45# pressure sensors are arranged in sequence, and near the side of the water-saving tank, 6# and 23# pressure sensors are arranged on the middle line of the top and bottom of the corridor between the main valve (31) and the spare valve (32), 7# and 24# pressure sensors are arranged on the middle line of the top and bottom of the corridor behind the spare valve (32), and a Y-shaped branch corridor behind the valve is arranged. The track section has a short inner wall and a long outer wall. Pressure sensors 8#, 9#, 10#, 11#, 12#, 13#, and 14# are arranged in sequence on the center line of the top surface. Pressure sensors 25#, 26#, 27#, 28#, 29#, 30#, and 31# are arranged in sequence on the center line of the bottom surface. Pressure sensors 32#, 33#, 34#, 35#, and 36# are arranged in sequence on the outer wall. Pressure sensors 37#, 38#, and 39# are arranged in sequence on the inner wall. The positions of the #, 32#, and 37# pressure sensors correspond to each other; the positions of the 10#, 27#, 33#, and 38# pressure sensors correspond to each other; the positions of the 12#, 29#, 34#, and 39# pressure sensors correspond to each other; the positions of the 13#, 30#, and 35# pressure sensors correspond to each other; the positions of the 14#, 31#, and 36# pressure sensors correspond to each other; a 46# tension and compression sensor is arranged on the suspension rod of the main valve (31); a 47# tension and compression sensor is arranged on the suspension rod of the standby valve (32).

9. The method for constructing a water delivery valve model according to any one of claims 1 to 8, characterized in that: After the resistance coefficient of the water supply valve model is calibrated, the original design structures of the corridor section before the valve, the valve well, the maintenance valve well, and the corridor section after the valve that connects the valve test working section do not need to be adjusted. Only the original inner and outer turning radii of the gooseneck pipe turning section are increased to reduce the resistance of the gooseneck pipe turning section.

10. A water delivery valve model, characterized in that: The water delivery valve model is constructed by the construction method of the water delivery valve model as described in any one of claims 1 to 9.

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