Research method and system for hydraulic performance during operation of single-side valve of double-line ship lock

Abstract

The invention discloses a research method and system for hydraulic performance during operation of a unilateral valve of a double-line ship lock. The research method comprises the following steps: establishing a hydraulic physical model of a water delivery system according to structural parameters of the water delivery system of the double-line ship lock; determining a valve opening mode when a single-side valve of the ship lock water delivery system operates; based on a water delivery system hydraulic physical model, simulating water filling and draining processes in a double-line ship lock chamber valve opening mode when water heads are different, and testing to obtain water delivery time, water delivery hydraulic characteristics, ship mooring force and water flow conditions of a water inlet and a water outlet when a single-side valve operates; and analyzing the simulation result, and judging whether the hydraulic performance of the single-side valve of the water delivery system meets the design requirement or not for guiding the design of the water delivery system. According to the method, the reliability of research results is improved, the hydraulic characteristics of the single-side valve of the double-line ship lock during operation can be accurately mastered, and the operation efficiency of the double-line ship lock is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship lock water delivery system analysis, and in particular to a method and system for studying the hydraulic performance of a double-line ship lock single-side valve during operation. Background Art

[0002] The water delivery system of the ship lock is one of the cores of the ship lock structure design. The water delivery system of the ship lock is divided into a centralized water delivery system or a decentralized water delivery system. The more commonly used decentralized water delivery system is to disperse the water delivery system in the lock head and the lock chamber. When filling or draining water, the water flows through a series of outlet branches or outlet holes set on the longitudinal water delivery corridor at the bottom of the lock chamber or in the wall of the lock chamber, and the water flows into (out) the lock chamber in a decentralized manner. In some projects, the ship lock adopts a double-line ship lock. The double-line ship lock consists of an upper lock head, a lower lock head, a lock chamber, an upstream pilot channel, a downstream pilot channel, and upstream and downstream anchorages. The double-line ship locks are arranged in parallel and share the upstream and downstream pilot channels. According to the conditions of the double-line ship lock, the water delivery system adopts a decentralized water delivery system, and the outlet corridors of the two-line ship lock bottom are connected through two connecting corridors. Valve control is set to transfer water between the two-line ship locks to achieve the purpose of water saving.

[0003] The hydraulic performance of the lock water delivery system directly affects the safe operation of the lock. Usually, the hydraulic performance design of the lock water delivery system should meet the following requirements during the design of the water delivery structure: (1) The lock water delivery system should ensure that water filling or water discharge is completed within the designed water delivery time, so as to meet the lock capacity requirements; (2) When filling and discharging water within the specified time, good water flow conditions in the lock chamber and the pilot channel should be obtained to meet the berthing and navigation safety of ships passing through the lock; (3) When the lock chamber is filled and discharged, the various components of the lock shall not be damaged by the water flow, such as scouring of the lock chamber bottom and the pilot channel bottom, cavitation, erosion and vibration of the water delivery valve and the corridor. Therefore, the hydraulic performance should be fully considered during the design of the water delivery structure to meet the requirements of the design specifications. In order to analyze the hydraulic performance of the water delivery system of the double-line ship lock, it is necessary to perform hydraulic analysis on both lock chambers. However, in the actual operation of the double-line ship lock, there is a special situation where one side of the valve is under maintenance. At this time, if the ship lock is to be able to operate, the single-side valve can be opened to deliver water. Therefore, it is necessary to analyze the hydraulic performance of the single-side valve when it is running. The existing hydraulic performance analysis is to establish a physical model for different working conditions for simulation analysis. The existing method for analyzing the hydraulic performance of the double-line ship lock water delivery system when the single-side valve is running has low accuracy and complex steps, and is not suitable for the analysis of the hydraulic performance of the double-line ship lock water delivery system when the single-side valve is running. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of low precision and complicated steps in the existing method of studying the hydraulic performance of the single-side valve of a double-line ship lock water supply system when it is in operation, and to provide a method and system for studying the hydraulic performance of the single-side valve of a double-line ship lock when it is in operation.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A method for studying the hydraulic performance of a double-line ship lock single-side valve during operation comprises the following steps:

[0007] Step S1, establishing a hydraulic physical model of the water delivery system according to the structural parameters of the double-line ship lock water delivery system, wherein the scope of the hydraulic physical model of the water delivery system includes an upstream pilot channel, a double-line ship lock, a water delivery system and a downstream pilot channel, and the water delivery system includes a water inlet, an upper lock head, a lock chamber and a lower lock head;

[0008] Step S2, determining the valve opening mode when the unilateral valve of the ship lock water delivery system is in operation;

[0009] Step S3, based on the hydraulic physical model of the water delivery system, simulating the filling and draining process of the double-line ship lock chamber valve opening mode at different water heads, and testing the water delivery time, water delivery hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation;

[0010] Step S4: Analyze the simulation results to determine whether the hydraulic performance of the unilateral valve of the water delivery system meets the design requirements when in operation, so as to guide the design of the water delivery system.

[0011] In the above technical scheme, a hydraulic physical model of the water conveyance system is established and the valve opening mode when the single-side valve of the ship lock water conveyance system is in operation is determined. Then, the filling and draining process under the valve opening mode of the double-line ship lock chamber at different water heads is simulated, and the water conveyance time, water conveyance hydraulic characteristics, ship mooring force, water flow conditions at the water inlet and outlet when the single-side valve is in operation are tested. The hydraulic performance results are analyzed to determine whether the hydraulic characteristics when the single-side valve is in operation meet the design requirements and adjust the water conveyance system structure according to the results so that the water conveyance system meets the hydraulic characteristics requirements. The present invention uses a physical model to simulate the water conveyance process, obtains hydraulic performance data, improves the reliability of the research results, can accurately grasp the hydraulic characteristics when the single-side valve of the double-line ship lock is in operation, and analyzes whether the hydraulic performance of the water conveyance system meets the specification requirements, thereby optimizing the design of the double-line ship lock water conveyance system and ensuring its efficient operation under different working conditions; simulation analysis can also help identify potential safety hazards, effectively avoid accidents, and improve the operating efficiency of the double-line ship lock.

[0012] As a preferred embodiment of the present invention, the scope of the hydraulic physical model of the water conveyance system includes an upstream pilot channel, a double-line ship lock, a water conveyance system and a downstream pilot channel. The water conveyance system includes a water inlet, an upper lock head, a lock chamber and a lower lock head. The hydraulic physical model of the water conveyance system is designed according to gravity similarity, with a geometric scale of 30. The conversion relationship between the physical quantities of the model and the prototype is that the weight and force scale is 27000, the velocity and time scale is 5.48, and the flow scale is 4929.5.

[0013] As a preferred embodiment of the present invention, the water head includes the design head, the minimum navigable head and the common head. The design head is 10.32m, the normal water storage level of the design head is 8.7m, and the downstream minimum navigable water level is -1.62m; the minimum navigable head is 9.62m, the upstream minimum navigable water level of the minimum navigable head is 8.0m, and the downstream minimum navigable water level is -1.62m; the common head is 8.04m, the normal water storage level of the common head is 8.7m, and the downstream average tide level is 0.66m.

[0014] As a preferred solution of the present invention, when the single-side valve of the ship lock is in operation, the opening and closing time of the gallery valve is 5 minutes.

[0015] As a more preferred embodiment of the present invention, when the single-side valve of the ship lock is in operation, the water delivery time is required to be controlled within 15 minutes.

[0016] As a preferred embodiment of the present invention, based on the hydraulic physical model of the water delivery system, the water delivery hydraulic characteristics of the water delivery system valve opening and closing time are tested under different water heads. The water delivery hydraulic characteristics include the maximum filling / discharging flow, the maximum flow rate of the filling / discharging valve section, and the super filling / discharging height.

[0017] As a preferred embodiment of the present invention, in the process of simulating the ship mooring force, the ship type is a 3000-ton to 6000-ton inland river ship, and further, the ship type is a 5000-ton bulk carrier with a total length of 88.0-90.0m, a total width of 15.5-15.8m, a full load draft of 4.8-5.2m, a height above the waterline of 15.8m, and a height above the waterline of 12.8m when the mast is inverted; the safe berthing requirements of the ship are: the maximum longitudinal mooring force of a 5000t ship is not more than 58kN, and the maximum transverse mooring force is not more than 29.0kN.

[0018] Another aspect of the present invention provides a system for studying the hydraulic performance of a double-line ship lock single-side valve during operation, the system comprising:

[0019] A modeling module is used to establish a hydraulic physical model of the water conveyance system according to the structural parameters of the double-line ship lock water conveyance system. The scope of the hydraulic physical model of the water conveyance system includes an upstream pilot channel, a double-line ship lock, a water conveyance system and a downstream pilot channel. The water conveyance system includes a water inlet, an upper lock head, a lock chamber and a lower lock head;

[0020] Parameter determination numerical model, used to determine the valve opening mode when the single-side valve of the lock water delivery system is in operation;

[0021] A simulation module is used to simulate the filling and discharge process of the double-line ship lock chamber valve opening mode under different water heads based on the hydraulic physical model of the water conveyance system, and to test the water conveyance time, water conveyance hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation;

[0022] The result analysis module is used to analyze the simulation results and determine whether the hydraulic performance of the single-side valve of the water delivery system meets the design requirements when it is in operation.

[0023] The present invention also provides an electronic device, comprising at least one processor, and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation.

[0024] The present invention also provides a computer-readable storage medium, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the above-mentioned method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a method for studying the hydraulic performance of a double-line ship lock when a single-side valve is in operation, establishes a hydraulic physical model of a water delivery system, determines the valve opening mode when the single-side valve of the ship lock water delivery system is in operation, and then simulates the filling and draining process of the double-line ship lock chamber valve opening mode at different water heads, tests the water delivery time, water delivery hydraulic characteristics, ship mooring force, water flow conditions at the water inlet and outlet when the single-side valve is in operation, analyzes the hydraulic performance results, determines whether the hydraulic characteristics when the single-side valve is in operation meet the design requirements, and adjusts the water delivery system structure according to the results, so that the water delivery system meets the hydraulic characteristics requirements. The present invention uses a physical model to simulate the water delivery process, obtains hydraulic performance data, improves the reliability of the research results, can accurately grasp the hydraulic characteristics when the single-side valve of the double-line ship lock is in operation, and analyzes whether the hydraulic performance of the water delivery system meets the specification requirements, thereby optimizing the design of the double-line ship lock water delivery system and ensuring its efficient operation under different working conditions; through simulation analysis, it can also help identify potential safety hazards, effectively avoid accidents, and improve the operating efficiency of the double-line ship lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of the method for studying the hydraulic performance of the single-side valve of the double-line ship lock when the valve is in operation according to the present invention;

[0028] Figure 2 This is the plan view of the water delivery system of the side branch holes of the long corridor at the bottom of the gate;

[0029] Figure 3 This is a plan view of the corridor connecting the side branch hole water supply system of the long corridor at the bottom of the gate;

[0030] Figure 4 This is the general layout of the water outlet section of the sluice chamber of the lateral branch hole water delivery system of the sluice bottom long gallery;

[0031] Figure 5 When the flow rate and water level process line are H = 10.32m when the valve is opened for 5 minutes, water is filled or drained when the valve is opened for 5 minutes.

[0032] Figure 6 When the flow rate and water level process line are H = 9.62m when the valve is opened for 5 minutes, water is filled or drained when the valve is opened for 5 minutes.

[0033] Figure 7 When the flow rate and water level process line are H=8.04m when the valve is opened for 5 minutes, water is filled or drained when the valve is opened for 5 minutes.

[0034] Figure 8 The mooring force process line of a 5000t single ship moored in the upper lock chamber at H = 10.32m, filled with water, and the valve opening time is 5 minutes;

[0035] Fig. 9 It is the mooring force process line of a 5000t single ship moored in the upper lock chamber at H=10.32m, with water released and the valve opening time of 5min.

[0036] Markings in the figure: 1-upstream pilot channel, 2-lock chamber, 3-water transfer system, 4-downstream pilot channel, 5-connecting corridor. DETAILED DESCRIPTION

[0037] In order to more clearly describe the invention purpose, technical scheme and technical effect advantages in the specific implementation case of the present invention, the scheme in the specific embodiment will be described in detail in combination with the drawings of the specification of the present invention. The specific technical scheme involved in the following specific embodiments is only for a clear and complete description of the innovative technical scheme of the present invention. It is only a part of the specific implementation scheme that can be adopted by the present invention, not all embodiments, and should not be understood as a limitation on the innovative scheme of the present invention. Any scheme adopting the same inventive concept of the present invention should be included in the protection scope of the present invention.

[0038] Secondly, the description of the drawings in the specific embodiments of the present invention is only for the convenience of technical personnel to understand the solution of the present invention. The partial details in the drawings are for the convenience of clearly presenting the technical solution. It should not be considered that all technical features in the drawings must be included in the specific implementation cases, and the detailed features in the drawings should not be identified as additional limitations on the innovative technical solution of the present invention. The components in the various embodiments described and shown in the drawings can be combined and arranged according to different configurations, and these changes in combination and arrangement should be identified as part of the entire embodiment of the innovative solution of the present invention and included in the scope of protection of the present invention.

[0039] In summary, the schemes or descriptions presented in the specific embodiments and drawings of the present invention are not intended to limit the scope of protection claimed, but are merely selected embodiments / cases to help technicians understand the relevant innovative solutions. Based on these embodiments, all other equivalent or parallel embodiments obtained by those skilled in the art without creative work are within the scope of protection claimed by the present invention.

[0040] Example 1

[0041] In actual operation, there is a special situation where one side of the double-line ship lock needs to be repaired. In this case, if the ship lock is to be able to operate, the single-side valve can be opened to transfer water. The experimental study of the hydraulic performance of the single-side valve of the ship lock during operation can be used for the structural design of the water transfer system and provide support for the actual operation of the double-line ship lock project in the future.

[0042] This embodiment provides a method for studying the hydraulic performance of a double-line ship lock with a single-side valve when in operation. Figure 1 , including the following steps:

[0043] Step S1, establishing a hydraulic physical model of the water delivery system according to the structural parameters of the double-line ship lock water delivery system, wherein the scope of the hydraulic physical model of the water delivery system includes an upstream pilot channel, a double-line ship lock, a water delivery system and a downstream pilot channel, and the water delivery system includes a water inlet, an upper lock head, a lock chamber and a lower lock head;

[0044] Step S2, determining the valve opening mode when the unilateral valve of the ship lock water delivery system is in operation;

[0045] Step S3, based on the hydraulic physical model of the water delivery system, simulating the filling and draining process of the double-line ship lock chamber valve opening mode at different water heads, and testing the water delivery time, water delivery hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation;

[0046] Step S4: Analyze the simulation results to determine whether the hydraulic performance of the unilateral valve of the water delivery system meets the design requirements, which is used to guide the design of the water delivery system.

[0047] The water delivery system of the double-line ship lock in this embodiment adopts the side branch hole water delivery system of the long gallery at the bottom of the lock. Figure 2 The upstream navigation channel 1, the lock chamber 2, the water delivery system 3 (including the water inlet, the upper lock head, the lock chamber, the lower lock head) and the downstream navigation channel 4 of the double-line ship lock are displayed. Since the ship lock has high requirements for saving water resources and improving water delivery efficiency, and the ship lock adopts a double-line ship lock arranged in parallel and shares the upstream and downstream navigation channels, the two-line ship lock bottom outlet corridors are connected through two connecting corridors 5, and valves are set to control the water delivery between the two-line ship locks to achieve the purpose of water saving. The cross-sectional dimensions of the corridor at the water delivery valve are 4.5m×6.0m, and the total cross-sectional area of ​​the corridor at the valve section is 54m 2 The cross-sectional area of ​​the main corridor at the bottom of the gate is 67.0m 2 A 1.0m thick partition wall is set in the middle of the main corridor, and about 50% of the area is interconnected to ensure uniform outflow during unilateral water delivery. The water delivery system adopts a side branch hole water discharge and open ditch energy dissipation arrangement with better energy dissipation effect. 64 water outlets are set in the water outlet section of the main corridor at the bottom of the gate, divided into 2 groups. The size of the orifice (width × height) from upstream to downstream is 0.75m × 1.4m (32 holes) and 0.7m × 1.4m (32 holes), with a total area of ​​64.96m 2 , the values ​​of α, β and γ are 1.24, 0.97 and 1.20. The arrangement of the outlet holes in groups and equal spacing is determined according to the specific conditions of the double-line ship lock chamber. The spacing between the outlet holes is 5.6m, and the total length of the outlet hole section is 168m, accounting for 59.80% of the effective length of the lock chamber. Figure 4 shown.

[0048] In order to save water consumption of the ship lock, considering the characteristics of the double-line ship lock layout, the two-line ship lock bottom water outlet corridors are connected through two connecting corridors, and valves are set to control the water transfer between the two-line ship locks. The area of ​​the connecting corridor valve section is 54.0m 2 , which is consistent with the corridor of the water delivery valve section. The dimensions of each part of the water delivery system are shown in Table 1, and the layout of the connecting corridor is shown in Figure 3 The water inlet of the upper sluice gallery adopts a vertical multi-branch hole arrangement on the sluice wall. According to the specification requirements, the inlet flow rate of the decentralized water supply system should not be greater than 2.5m / s, so the water inlet (width × height) is taken as 2×6×4.5×6.0m 2 , total area 324.0m 2. The top elevation of the water inlet is -7.5m, the corresponding bottom elevation is -13.5m, and the minimum flooding depth of the inlet is 15.5m, which is greater than the requirement of 0.4 times the head. The water inlet and the outlet corridor of the gate chamber are connected by a vertical turn, with a height of 6.0m. The working valve is arranged below the vertical turn. The top elevation of the corridor at the valve is -11.2m, and the bottom elevation of the corridor is -17.2m. The minimum flooding depth is 9.58m, which is 0.93 times the head. After the valve, the top of the corridor remains unchanged, and the bottom is raised, reducing the corridor height from 6.0m to 5.0m. The corridor behind the valve is connected to the main corridor at the bottom of the gate through two horizontal turns and slopes, raising the bottom of the corridor to -16.2m, and the corridor height remains unchanged at 5.0m. At the same time, the corridor width is adjusted from 4.5m to 6.7m.

[0049] The corridor of the discharge valve section of the lower gate is connected to the outlet corridor at the bottom of the gate through a slope and a horizontal turn. The slope section reduces the corridor bottom elevation from -16.2m to -17.2m, and the corridor height is raised from 5.0m to 6.0m. The minimum flooding depth of the discharge valve top is 9.58m, and the horizontal turn adjusts the corridor width from 6.7m to 4.5m; after the discharge valve, it is connected to the energy dissipation chamber of the lower gate outlet through another horizontal turn, and the cross-sectional area of ​​the outlet is 132m 2 In order to make the water flow at the outlet as uniform as possible, a middle pier is set at the horizontal turn behind the discharge valve. A water outlet grille is arranged on the top of the energy dissipation chamber at the outlet of the lower gate. The area of ​​the water outlet holes of the grille decreases in 9 levels, with a total area of ​​178.2m 2 .

[0050] Table 1 Characteristic dimensions of the water delivery system of the side branch holes in the long corridor at the bottom of the gate

[0051]

[0052]

[0053] The physical model of the side branch hole water delivery system of the long corridor at the bottom of the gate is designed according to gravity similarity, and the geometric scale L=30 is selected. The conversion relationship between the physical quantities of the model and the prototype is as follows:

[0054] Weight and force ratio: (L r ) 3 =27000,

[0055] The flow rate and time scale is (L r ) 1 / 2 =5.48,

[0056] Flow rate scale (L r ) 5 / 2 =4929.5.

[0057] The side walls of the lock chamber are made of steel plates, and the water delivery corridor and the upstream and downstream pilot channels are made of polyethylene plastic plates. For easy observation, the water delivery valve section and part of the lock chamber section are made of plexiglass. The scope of the hydraulic model includes the upstream pilot channel, the ship lock chamber, the water delivery system (including the water inlet, the upper gate head, the lock chamber, the lower gate head) and the downstream pilot channel. The upstream and downstream water levels are controlled by overflow flat water tanks, and the water delivery valve is controlled by a stepper motor driven hoist with stepless speed regulation. The lock chamber filling and discharge curves and the non-constant flow pressure of the corridor behind the valve are measured by resistive point pressure sensors. The ship mooring tension is measured by a dynamometer. A rectangular water measuring weir is connected to the outlet of the downstream reservoir of the model to measure the constant flow of the lock chamber filling and discharge.

[0058] According to the characteristic water levels upstream and downstream of the double-line ship lock, combined with comprehensive engineering analysis, three water level combinations are determined: 1. Design head 10.32m (normal water level 8.7m ~ downstream minimum navigable water level -1.62m); 2. Minimum navigable head 9.62m (upstream minimum navigable water level 8.0m ~ downstream minimum navigable water level -1.62m); 3. Common head 8.04m (normal water level 8.7m ~ downstream average tidal level 0.66m). Under different heads, the hydraulic characteristics of the single-sided corridor valve under the condition of opening for 5 minutes are mainly considered. Based on the hydraulic physics model of the water conveyance system, the hydraulic characteristics of the water conveyance system valve opening and closing time are tested under different heads.

[0059] (1) Water delivery time

[0060] The single-sided corridor of the ship lock is operated, and the valve is opened and closed for 5 minutes. The water delivery time of the operating conditions obtained from the test is shown in Table 2. The filling and discharge times under the design head (10.32m) are 12.78min and 14.60min respectively; the filling and discharge times under the 9.62 head are 12.45min and 13.93min respectively; the filling and discharge times under the normal head (8.04m) are 11.68min and 12.78min respectively. When the single-sided valve of the ship lock is in operation, the water delivery time is required to be controlled within 15min. The water delivery time meets the requirements of the specification.

[0061] Table 2 Water delivery time of single-side valve under normal operating conditions

[0062]

[0063] (2) Hydraulic characteristics of water delivery

[0064] The ship lock is operated in a single-side corridor, and the valve is opened and closed for 5 minutes. The hydraulic characteristics of water delivery under typical water head under normal operating conditions obtained from the test are shown in Table 3 and Figure 5 to Figure 7 The maximum flow rates of flooding and discharge under the design head (10.32m) are 372m 3 / s and 312m 3 / s, the maximum flow rate of the valve section corridor is 5.78m / s~6.89m / s; the maximum flow rate of flooding and discharge under the lowest navigation head (9.62m) is 350m 3 / s and 294m 3 / s; the maximum flow rate of flooding and discharge under the common head (8.04m) is 341m 3 / s and 285m 3 / s, the maximum flow velocity in the valve section gallery is between 5.45m / s and 6.48m / s, and the maximum flow velocity in the valve section gallery is between 5.29m / s and 6.32m / s.

[0065] Table 3 Hydraulic characteristics of water delivery under normal operation of single-side valve

[0066]

[0067] (3) Lock chamber ship berthing conditions

[0068] In the process of simulating the filling or draining of the lock, the ship berthing condition test condition is determined to be a 5,000-ton ship, and the ship berthing positions are: the upper lock chamber, the middle of the lock chamber and the lower lock chamber. Considering that the main factors affecting the ship berthing conditions in the lock chamber are the lock working head, the ship berthing position and the valve operation mode, the test mainly uses the above three factors as control conditions to carry out research. The test will focus on the ship berthing conditions at the maximum design head of the single-line water delivery operation mode, and only a small number of verification tests will be carried out under other conditions.

[0069] When the valve is opened for 5 minutes during the flooding process with the designed water head (10.32m), the test results are shown in Tables 4 and 5, and the mooring force measurement results are shown in Tables 4 and 5. Figure 8 and Fig. 9 The maximum longitudinal mooring force is 16.78kN, the maximum rear transverse mooring force is 13.50kN, the allowable longitudinal mooring force for a 5000t ship is 58.0kN, and the allowable transverse mooring force is 29.0kN. It can be seen that under the design head (10.32m), when the double-line ship lock is operating in a single-sided corridor, the ship mooring force meets the requirements of the specification.

[0070] Table 4 Maximum mooring force of ships when the lock chamber is filled with water at the design water head (10.32m)

[0071]

[0072] Table 5 Maximum mooring force of ships when the lock chamber is discharged with design water head (10.32m)

[0073]

[0074] When the valve is opened for 5 minutes during the flooding process with a water head of 9.62m, the test results are shown in Tables 6 and 7. The maximum longitudinal mooring force is 13.50kN, and the maximum rear transverse mooring force is 11.79kN, both of which meet the requirements of the specification.

[0075] Table 6 Maximum mooring force of ships when the lock chamber is filled with water at the design water head (9.62m)

[0076]

[0077] Table 7 Maximum mooring force of ships when the lock chamber is discharged with design water head (9.62m)

[0078]

[0079] When the valve is opened for 5 minutes during the flooding process with a common water head (8.04m), the test results are shown in Tables 8 and 9. The maximum longitudinal mooring force is 13.48kN and the maximum rear transverse mooring force is 9.24kN, both of which meet the requirements of the specification.

[0080] Table 8 Maximum mooring force for ships when the lock chamber is flooded with water head (8.04m)

[0081]

[0082] Table 9 Maximum mooring force for ships when the lock chamber is discharged due to the common water head (8.04m)

[0083]

[0084] (4) Inlet and outlet water flow conditions

[0085] Since the water flow rate is greatly reduced when the unilateral valve is in operation, the water flow conditions at the upstream and downstream inlets and outlets and the pilot channel under this working condition can meet the regulatory requirements.

[0086] Example 2

[0087] This embodiment provides a system for studying the hydraulic performance of a double-line ship lock single-side valve when in operation, the system comprising:

[0088] A modeling module is used to establish a hydraulic physical model of the water conveyance system according to the structural parameters of the double-line ship lock water conveyance system. The scope of the hydraulic physical model of the water conveyance system includes an upstream pilot channel, a double-line ship lock, a water conveyance system and a downstream pilot channel. The water conveyance system includes a water inlet, an upper lock head, a lock chamber and a lower lock head;

[0089] Parameter determination numerical model, used to determine the valve opening mode when the single-side valve of the lock water delivery system is in operation;

[0090] A simulation module is used to simulate the filling and discharge process of the double-line ship lock chamber valve opening mode under different water heads based on the hydraulic physical model of the water conveyance system, and to test the water conveyance time, water conveyance hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation;

[0091] The result analysis module is used to analyze the simulation results and determine whether the hydraulic performance of the single-side valve of the water delivery system meets the design requirements when it is in operation.

[0092] The systems or modules described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. For the convenience of description, the above devices are described in various modules according to their functions. Of course, when implementing this application, the functions of each module can be implemented in the same or multiple software and / or hardware, or the module that implements the same function can be implemented by a combination of multiple sub-modules.

[0093] This embodiment also provides an electronic device, including at least one processor, a memory connected to the at least one processor, and at least one input / output interface connected to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the method for studying the hydraulic performance of a double-line ship lock single-side valve in operation in the aforementioned embodiment 1. The input / output interface may include a display, a keyboard, a mouse, and a USB interface for inputting and outputting data.

[0094] The electronic device can be an electronic device for a client, such as a mobile phone, a laptop computer, a tablet computer, a desktop computer, etc., to execute a method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation in Example 1.

[0095] Those skilled in the art can understand that: all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), disks or optical disks, etc. Various media that can store program codes.

[0096] When the above-mentioned integrated unit of the present invention is implemented in the form of a software functional unit and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0097] This embodiment also provides a computer-readable storage medium, in which at least one instruction, at least one program, code set or instruction set is stored. The at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement the above-mentioned method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation.

[0098] Computer readable storage media can be tangible devices that hold and store instructions used by instruction execution devices. Computer readable storage media can be, for example, but not limited to, electronic storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any combination thereof.

[0099] For those skilled in the art, when understanding the solutions described in the specific embodiments of the present invention, they can refer to the conventional technical manuals in the field. At the same time, for the places where the above-mentioned terms appear, they can make appropriate understandings or adjustments for reference, and deduce the implementation of the same or similar technical solutions without paying any creative work.

[0100] The above embodiments describe only the basic principles, main features and / or advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the invention content of the specification only describe the principles or specific cases of the present invention. Without departing from the essence of the innovative idea of ​​the present invention, the innovative scheme of the present invention may be subject to various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention.

Claims

1. A method for studying the hydraulic performance of a double-line ship lock single-side valve during operation, characterized in that: The following steps are involved: Step S1, establishing a hydraulic physical model of the water delivery system according to the structural parameters of the double-line ship lock water delivery system, wherein the scope of the hydraulic physical model of the water delivery system includes an upstream pilot channel, a double-line ship lock, a water delivery system and a downstream pilot channel, and the water delivery system includes a water inlet, an upper lock head, a lock chamber and a lower lock head; Step S2, determining the valve opening mode when the unilateral valve of the ship lock water delivery system is in operation; Step S3, based on the hydraulic physical model of the water delivery system, simulating the filling and draining process of the double-line ship lock chamber valve opening mode at different water heads, and testing the water delivery time, water delivery hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation; Step S4: Analyze the simulation results to determine whether the hydraulic performance of the unilateral valve of the water delivery system meets the design requirements when in operation, so as to guide the design of the water delivery system.

2. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to claim 1 is characterized in that: The hydraulic physical model of the water delivery system is designed according to gravity similarity, with a geometric scale of 30. The conversion relationship between the model and the prototype physical quantities is that the weight and force scale is 27000, the flow velocity and time scale is 5.48, and the flow scale is 4929.

5.

3. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to claim 1 is characterized in that: The water head includes the design head, the minimum navigable head and the common head. The design head is 10.32m, the normal water storage level of the design head is 8.7m, and the downstream minimum navigable water level is -1.62m; the minimum navigable head is 9.62m, the upstream minimum navigable water level of the minimum navigable head is 8.0m, and the downstream minimum navigable water level is -1.62m; the common head is 8.04m, the normal water storage level of the common head is 8.7m, and the downstream average tide level is 0.66m.

4. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to claim 1 is characterized in that: When the single-side valve of the ship lock is in operation, the opening and closing time of the gallery valve includes 5 minutes.

5. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to any one of claims 1 to 4, characterized in that: When the single-side valve of the ship lock is in operation, the water delivery time is required to be controlled within 15 minutes.

6. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to any one of claims 1 to 4, characterized in that: Based on the hydraulic physical model of the water delivery system, the hydraulic characteristics of the water delivery system valve opening and closing time are tested under different water heads. The hydraulic characteristics of the water delivery include the maximum filling / discharging flow, the maximum flow rate of the filling / discharging valve section, and the excess filling / discharging height.

7. The method for studying the hydraulic performance of a double-line ship lock single-side valve during operation according to any one of claims 1 to 4, characterized in that: During the ship mooring force simulation process, the ship type is a 5000-ton bulk carrier with a total length of 88.0-90.0m, a total width of 15.5-15.8m, and a full-load draft of 4.8-5.2m; the safe berthing requirements for ships are: the maximum longitudinal mooring force of a 5000t ship is not more than 58kN, and the maximum transverse mooring force is not more than 29.0kN.

8. A system for studying the hydraulic performance of a double-line ship lock single-side valve during operation, characterized in that: The system comprises: A modeling module is used to establish a hydraulic physical model of the water conveyance system according to the structural parameters of the double-line ship lock water conveyance system. The scope of the hydraulic physical model of the water conveyance system includes an upstream pilot channel, a double-line ship lock, a water conveyance system and a downstream pilot channel. The water conveyance system includes a water inlet, an upper lock head, a lock chamber and a lower lock head; Parameter determination numerical model, used to determine the valve opening mode when the single-side valve of the lock water delivery system is in operation; A simulation module is used to simulate the filling and discharge process of the double-line ship lock chamber valve opening mode under different water heads based on the hydraulic physical model of the water conveyance system, and to test the water conveyance time, water conveyance hydraulic characteristics, ship mooring force, and water flow conditions of the water inlet and outlet when the unilateral valve is in operation; The result analysis module is used to analyze the simulation results and determine whether the hydraulic performance of the unilateral valve of the water delivery system meets the design requirements when it is in operation.

9. An electronic device comprising at least one processor and a memory in communication with the at least one processor; the memory stores instructions executable by the at least one processor, characterized in that: The instructions are executed by the at least one processor so that the at least one processor can execute the method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation as described in any one of claims 1-7.

10. A computer-readable storage medium, wherein at least one instruction, at least one program, code set or instruction set is stored in the computer-readable storage medium, characterized in that: The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method for studying the hydraulic performance of a single-side valve of a double-line ship lock during operation as described in any one of claims 1-7.

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