Method and system for checking operation load of hydraulic cylinder of double-lifting-point radial gate hoist

Abstract

The invention belongs to the technical field of hydraulic cylinders of gate hoists, and provides a method and a system for checking operation load of a hydraulic cylinder of a double-lifting-point radial gate hoist. The method comprises the following steps: constructing a dynamic model of the double-lifting-point radial gate hoist by combining an initial model of the double-lifting-point radial gate hoist according to the dynamic safety opening degree of a gate and different heights and speeds of water flow, and further determining a fluid domain and a solid domain and performing grid division respectively; carrying out coupling analysis calculation on a fluid domain and a solid domain according to preset boundary conditions of the double-lifting-point radial gate hoist and grid division conditions of the fluid domain and the solid domain, and constructing an environment parameter and hoist hydraulic cylinder load distribution model; according to the environmental parameters and the hoist hydraulic cylinder load distribution model, stress-strain simulation data of all parts of the double-lifting-point radial gate hoist hydraulic cylinder under different flow velocities are obtained so as to check stress-strain ranges corresponding to different part type selection and structural design of the double-lifting-point radial gate hoist hydraulic cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic cylinders for gate hoists, and in particular relates to a method and system for checking the operating load of a hydraulic cylinder for a double-hanging-point arc gate hoist. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The main body of the double-hanging point radial gate includes a curved panel, a hydraulic hoist, and two arms, which are composed of gate leaf welded parts, arm assembly, hinge assembly, water stop assembly, side wheel assembly, etc. Bolts are used to connect the arm and the gate leaf, and the arm and hinge. The connection point between the hydraulic cylinder and the gate is located at the top of the gate panel. Figure 1 As shown. The hydraulic gate hoist is a new type of gate hoist that integrates machinery, electricity, hydraulics and instruments. It uses a hydraulic cylinder as the main moving body. Its working principle is to use the drive motor as the power source to drive the bidirectional hydraulic oil pump to output pressure oil, drive the hydraulic cylinder through components such as the hydraulic oil circuit integrated block, and use the telescopic movement of the hydraulic cylinder to control the opening and closing of the radial gate. The safety and reliability of the gate hoist hydraulic cylinder are crucial to the normal operation of the entire water conservancy hub.

[0004] At present, the problems of hydraulic system failure to build pressure, jitter during movement, and piston rod creep of hydraulic gate hoists can be solved by strictly controlling the production, manufacturing, and debugging of the hydraulic system and hydraulic cylinder. However, due to the variable load environment and complex influencing factors of the hydraulic gate hoist, its asynchronous operation problem cannot be solved by structural regulation. In the existing calibration of double-hanging-point radial gates, there is a problem of insufficient consideration of the calibration scheme for the hydraulic cylinder of the gate hoist. Traditional gate calibration schemes usually only focus on evaluating the bearing capacity of the gate body, but often ignore the asynchronous operation problem of the hydraulic cylinder of the gate hoist under working conditions with complex hydrological conditions, which may cause gate operation failures. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method and system for verifying the operating load of the hydraulic cylinder of a double-hanging-point arc gate hoist. Based on the gate water flow movement and sediment distribution law under harsh environments, parameters such as water level, flow velocity, gate deadweight, and friction are set. The load distribution state on the hydraulic cylinder of the hoist under harsh environments is analyzed through the fluid-solid coupling module of finite element simulation, and an environmental parameter-hoist hydraulic cylinder load distribution model is constructed to provide a basis for setting the gate synchronous start-up parameters.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist.

[0008] In one or more embodiments, a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist is provided, comprising:

[0009] According to the dynamic safety opening of the gate, different heights and speeds of water flow, and combined with the initial model of the double-hanging-point radial gate hoist, the dynamic model of the double-hanging-point radial gate hoist is constructed;

[0010] Based on the dynamic model of the double-hanging-point radial gate hoist, the fluid domain and solid domain are determined and meshed separately.

[0011] According to the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid domain and the solid domain, the coupling analysis and calculation of the fluid domain and the solid domain are carried out to construct the environmental parameters and the load distribution model of the hydraulic cylinder of the gate hoist;

[0012] According to the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, the stress-strain simulation data of each part of the hydraulic cylinder of the double-hanging-point radial gate hoist at different flow rates are obtained to verify the stress-strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0013] As an implementation method, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0014] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0015] According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

[0016] As an implementation method, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0017] As an implementation method, in the fluid domain, materials are set, the fluid inlet, outlet and fluid-solid coupling surface boundary are determined, surface expansion is set, and the fluid domain is meshed.

[0018] As an implementation method, in the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, fixed supports are set for the hydraulic cylinder fixed bearings, radial gate panel bearings and concrete matrix, and the surface corresponding to the fluid-solid coupling surface and all solid surfaces are selected in the fluid-solid interface to perform surface expansion settings and perform meshing.

[0019] A second aspect of the present invention provides a double-hanging-point radial gate hoist hydraulic cylinder operation load verification system.

[0020] In one or more embodiments, a double-hanging-point radial gate hoist hydraulic cylinder operation load verification system includes:

[0021] The dynamic model building module is used to build a dynamic model of the double-hanging-point radial gate hoist according to the dynamic safety opening of the gate, different heights and speeds of the water flow, and the initial model of the double-hanging-point radial gate hoist;

[0022] The fluid-solid meshing module is used to determine the fluid domain and solid domain based on the dynamic model of the double-hanging-point radial gate hoist and perform meshing respectively;

[0023] The fluid-solid coupling analysis module is used to perform coupling analysis and calculation on the fluid domain and the solid domain according to the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid domain and the solid domain, and to construct a model of environmental parameters and load distribution of the hydraulic cylinder of the hoist;

[0024] The load distribution verification module is used to obtain the stress and strain simulation data of each part of the double-hanging-point radial gate hoist hydraulic cylinder under different flow rates according to the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, so as to verify the stress and strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0025] As an implementation mode, in the dynamic model building module, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0026] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0027] According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

[0028] As an implementation mode, in the fluid-solid grid division module, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0029] A third aspect of the present invention provides a computer-readable storage medium.

[0030] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps in the above-mentioned method for calibrating the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist.

[0031] A fourth aspect of the present invention provides an electronic device.

[0032] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps in the method for verifying the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist as described above are implemented.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The present invention constructs a dynamic model of a double-hanging-point radial gate hoist, determines the fluid domain and the solid domain and performs mesh division respectively, and then adopts a fluid-solid coupling analysis method to perform a finite element coupling analysis on the fluid domain and the solid domain, thereby achieving accurate calculation of the interaction force between the fluid and the solid structure, and being able to more accurately simulate the operating state of the hydraulic cylinder of the radial gate hoist under actual working conditions, thereby improving the accuracy of the analysis.

[0035] (2) The present invention fully considers the influence of different working conditions such as gate opening (gate door panel lifting height), inlet water level, water velocity and gate panel metal material, constructs the environmental parameter and gate hoist hydraulic cylinder load distribution model, and obtains the stress and strain simulation data of each part of the double-hanging point arc gate hoist hydraulic cylinder under different flow rates, providing more reliable reference data for safety assessment and solving the synchronous control problem of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0037] Figure 1 2 is a schematic structural diagram of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0038] Figure 2 It is a simulation model of a radial gate hydraulic hoist according to an embodiment of the present invention;

[0039] Figure 3 It is a schematic flow chart of a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0040] Figure 4 It is a simulation flow chart of a method for checking the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0041] Figure 5 It is a connection principle diagram of a simulation model of a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0042] Figure 6 It is the deformation curve of the hydraulic cylinder of the hanging point radial gate hoist under different water flow velocities;

[0043] Figure 7 It is the strain curve of the hydraulic cylinder of the hanging point radial gate hoist under different water flow velocities;

[0044] Figure 8 It is the stress curve of the hydraulic cylinder of the hanging point radial gate hoist under different water flow velocities;

[0045] Fig. 9 It is the simulation result of strain of hydraulic cylinder of hanging point radial gate hoist under different water flow velocities;

[0046] Fig.10 It is the stress simulation result of the hydraulic cylinder of the hanging point radial gate hoist under different water flow velocities;

[0047] Fig.11 It is the stress variation trend during the 5s simulation process;

[0048] Fig.12 It is a schematic diagram of the structure of the double-hanging-point radial gate hoist hydraulic cylinder operating load verification system of an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Combination Figure 3 and Figure 4The method for checking the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist in this embodiment may include:

[0053] S100, based on the dynamic safety opening of the gate, different heights and speeds of water flow, combined with the initial model of the double-hanging-point radial gate hoist, constructs a dynamic model of the double-hanging-point radial gate hoist.

[0054] S200, based on the dynamic model of the double-hanging-point radial gate hoist, determines the fluid domain and solid domain and performs mesh division respectively.

[0055] S300, based on the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid domain and the solid domain, performs coupling analysis and calculation on the fluid domain and the solid domain, and constructs a model of environmental parameters and load distribution of the hydraulic cylinder of the hoist.

[0056] S400, based on environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, obtains the stress-strain simulation data of each part of the hydraulic cylinder of the double-hanging-point radial gate hoist at different flow rates to verify the stress-strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0057] In some specific implementation processes, the System Coupling module used in Ansys Workbench belongs to the fluid-solid coupling method. The solver is used to perform time-domain integration on the fluid domain solid, and then data is exchanged to keep the grid nodes of the fluid part and the solid structure part coincident. The data transmission needs to be completed through the grid nodes.

[0058] The invention also fully considers different working conditions such as gate opening, inlet water level, water speed and metal material of gate plate, and provides two solutions for simulating the hydraulic cylinder of the gate hoist when the two hydraulic cylinders are unevenly loaded: modifying the velocity direction of the fluid simulation inlet to simulate the influence of water flow in a random direction or applying different damping on both sides of the gate plate of the transient structure to simulate the influence of silt accumulation in the gate slideway, providing important reference data for the calibration of the hydraulic cylinder of the gate hoist.

[0059] In the specific implementation process of step S100, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0060] According to the design drawings of the double-hanging-point radial gate hoist, Figure 1 As shown, the gate panel data, gate beam grid structure data, and gate support arm and hydraulic cylinder data are obtained;

[0061] According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

[0062] According to the dynamic safety opening of the gate, different heights and speeds of water flow, the initial model was modified to obtain several groups of models with gate openings distributed in the range of 1-3m, namely the dynamic model of the double-hanging-point radial gate hoist that needs to be simulated.

[0063] according to Figure 2 The dynamic model of the double-hanging-point radial gate hoist includes a simulation fluid domain 1, a water-facing concrete wall 2, a hydraulic cylinder 3, a radial gate 4, a gate support shaft 5, and a water flow bottom concrete wall 6.

[0064] Specifically, the process of establishing the dynamic model of the double-hanging-point radial gate hoist includes:

[0065] Firstly, a gate panel simulation model is established to characterize the gate curved panel;

[0066] At the same time, a gate arm simulation model for characterizing the gate arm is established; contact constraints are imposed on the gate arm simulation model and the gate leaf simulation model to form a gate body simulation model;

[0067] Secondly, a simulation model for representing the hydraulic cylinder of the gate hoist is established; contact constraints are imposed on the gate panel simulation model and the hydraulic cylinder simulation model to form a simulation model of the hydraulic cylinder of the gate hoist;

[0068] Finally, a liquid-water-filled space at the inlet is created to represent the fluid portion.

[0069] In step S200, according to the water level data, the model is imported into the Geometry geometric model module to construct the fluid and solid areas; wherein the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0070] In the fluid domain, set the material, determine the fluid inlet, outlet and fluid-solid coupling surface boundaries, set surface expansion, and mesh the fluid domain.

[0071] Specifically, according to the water flow velocity in the working area of ​​the hydraulic cylinder of the gate hoist and the Geometry model, the material is set in the FluidFlow fluid part meshing and related parameter setting module, the boundaries such as the fluid inlet (inlet), outlet (outlet), fluid-solid coupling surface (fsi-fluid) are named, the surface expansion is set, and the fluid domain is meshed.

[0072] For example, set the fluid material to water-liquid and the Y-axis gravity to -9.8m / s 2, select transient calculation method and PISO calculation scheme, set different fluid inlet velocity distributions in 1-5m, outlet water pressure 0Mpa and suppress backflow.

[0073] In the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, fixed supports are set for the fixed bearings of the hydraulic cylinder, the radial gate panel bearings and the concrete matrix, and the surfaces corresponding to the fluid-solid coupling surfaces and all solid surfaces are selected in the fluid-solid interface for surface expansion settings and meshing.

[0074] Specifically, according to the Geometry geometric model, in the Transient Structural solid part meshing and related parameter setting module, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, fixed supports are set for the fixed bearings of the hydraulic cylinder, the radial gate panel bearings and the concrete matrix, the surface corresponding to fsi-fluid is selected in the fluid-solid interface, the surface expansion is set for all solid surfaces, and meshing is performed.

[0075] For example, set the density, Young's modulus and Poisson's ratio of the structural steel material to 7895kg / m 3 , 2×10 11 Pa and 0.3; set the density, Young's modulus and Poisson's ratio of the concrete material to 2600kg / m 3 , 3×10 9 Pa and 0.2; keep the unit length of fluid and transient structure grid divisions the same as 0.25m.

[0076] In step S300, the solver, turbulence model, algorithm selection, boundary conditions and time step are also preset.

[0077] Specifically, the pressure-based solver is selected according to the water conditions and the applicable scope, and the SST k-ω model of the turbulence model is selected as the turbulence model;

[0078] Set the liquid material in the Fluent material library; set the materials for the concrete and structural steel in the Engineering Data library in Transient Structural;

[0079] According to the water conditions, the inlet velocity, the turbulent intensity I of the initial turbulence parameters and the turbulent viscosity ratio μ t / μ, (Turbulent viscosity Ratio) is set; and the grid setting is started for the fluid-solid coupling surface;

[0080] Select the PISO (Pressure-Implicit with Splitting of Operators) algorithm in the Solution Method module of Fluent. This algorithm has a higher degree of approximation for the relationship between pressure and velocity correction, and keeps the adjacent correction coefficient and the skew correction coefficient at the default value of 1.

[0081] According to the settings of the fluid module and transient module, set the solution scheme in the System Coupling fluid-structure coupling calculation module and the Results post-processing module, and set the time step, data transmission, solution order and data storage;

[0082] For example, set the calculation time to 5s, the step size to 0.01 / 0.02s, the minimum number of iterations to 1, and the maximum number of iterations to 5; set the data transmission to fluid flow to transient structure.

[0083] In step S400, the simulation analysis results are analyzed and reliability verification is performed, and the specific process is as follows:

[0084] Select the required solution in the Transient Structural module to create the total deformation and equivalent stress results required for settlement;

[0085] After the solution update is completed, the stress and strain range of each part of the double-hanging point gate hoist hydraulic cylinder is recorded, and the change law of stress and strain under different simulation conditions is statistically analyzed;

[0086] Compare the stress-strain simulation data patterns obtained under the simulation parameters of various environmental parameter combinations with the theoretical calculation values ​​to verify the reliability of the simulation;

[0087] The obtained data is statistically analyzed and the environmental parameter-hoist hydraulic cylinder load distribution model is established to optimize the parts selection and structural design of the hoist hydraulic cylinder, providing a basis for setting the gate synchronous starting parameters.

[0088] Combination Figure 5 The simulation results of hydraulic cylinder stress and strain are as follows: Figure 6-Figure 11 As shown, the instantaneous maximum strain is 0.2%, the average strain is less than 0.1%, and the maximum equivalent stress is about 200MPa, which is much smaller than the upper limit of the bearing capacity of the hydraulic cylinder, that is, the hydraulic gate hoist can operate normally and smoothly.

[0089] Depend on Fig.11It is known that the instantaneous maximum stress on the hydraulic cylinder of the gate hoist model during the simulation process is greater than the stress on the hydraulic cylinder after stabilization. It is necessary to perform statistics on the simulation design of the h1_v5 group with the largest theoretical load value. It is found that the instantaneous maximum equivalent stress during the startup process can reach 280MPa, but it is still less than the stress limit of the hydraulic gate hoist steel Q355C.

[0090] However, if the hydraulic gate hoist is to be used in more severe water conditions, it is necessary to strengthen the weak parts of the hydraulic cylinder according to the load distribution of the simulation results. Rigidity-strengthening materials can be used. By improving the deformation of the hydraulic cylinder under stress, the influence of the deformation of the hydraulic cylinder on the sealing system is reduced, the strength of the hydraulic cylinder and its ability to bear lateral forces are improved, and the problems of shaking and creeping that may occur in the hydraulic cylinder of the hydraulic gate hoist during movement are solved, thereby improving the stability and reliability of the operation of the hydraulic gate hoist.

[0091] Fig.12 Schematic diagram of the load verification system structure of the hydraulic cylinder of the double-hanging-point radial gate hoist according to the embodiment of the present invention. Fig.12 As shown, a double-hanging-point radial gate hoist hydraulic cylinder operation load verification system is provided, comprising:

[0092] The dynamic model building module 1201 is used to build a dynamic model of the double-hanging-point radial gate hoist according to the dynamic safety opening of the gate, different heights and speeds of the water flow, and the initial model of the double-hanging-point radial gate hoist;

[0093] A fluid-solid meshing module 1202 is used to determine the fluid domain and the solid domain based on the dynamic model of the double-hanging-point radial gate hoist and perform meshing on them respectively;

[0094] The fluid-solid coupling analysis module 1203 is used to perform coupling analysis and calculation on the fluid domain and the solid domain according to the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing conditions of the fluid domain and the solid domain, and to construct a model of environmental parameters and load distribution of the hydraulic cylinder of the hoist;

[0095] The load distribution verification module 1204 is used to obtain the stress-strain simulation data of each part of the double-hanging-point radial gate hoist hydraulic cylinder under different flow rates according to the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, so as to verify the stress-strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0096] In the specific implementation process, in the dynamic model building module 1201, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0097] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0098] According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

[0099] In the fluid-solid grid division module 1202, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0100] It should be noted that the various modules in this embodiment are Figure 3 The various steps in correspond to each other, and the specific implementation process is the same, which will not be described in detail here.

[0101] The present invention aims at the specific working characteristics of the hydraulic cylinder of the double-hanging-point radial gate hoist, constructs a finite element model of the interaction between the fluid and the hydraulic cylinder, uses fluid-solid coupling technology to accurately calculate the interaction force between the fluid and the solid, and fully considers the influence of complex hydrological conditions on the uneven load of the hydraulic cylinder of the hoist. It can effectively calibrate the load of the hydraulic cylinder and construct an environmental parameter-load distribution model of the hydraulic cylinder of the hoist, providing more reliable reference data for safety assessment and solving the synchronous control problem of the hydraulic cylinder.

[0102] In one or more embodiments, a schematic diagram of an electronic device is provided. The electronic device includes a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM). In the RAM, various programs and data required for system operation are also stored. The central processing unit, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0103] The following components are connected to the I / O interface: an input section including a keyboard, a mouse, etc.; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a local area network (LAN) card, a modem, etc. The communication section performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that a computer program read therefrom is installed into the storage section as needed.

[0104] When the central processing unit in the electronic device of this embodiment executes the program, the following is achieved: Figure 3 The steps in the method for verifying the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist are shown.

[0105] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer readable medium, the computer program including a computer program for executing Figure 3 In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit, various functions defined in the device of the present application are executed.

[0106] in, Figure 3 The computer program instructions corresponding to the method shown may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0107] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for checking the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist, characterized in that: include: According to the dynamic safety opening of the gate, different heights and speeds of water flow, and combined with the initial model of the double-hanging-point radial gate hoist, the dynamic model of the double-hanging-point radial gate hoist is constructed; Based on the dynamic model of the double-hanging-point radial gate hoist, the fluid domain and solid domain are determined and meshed separately. According to the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid domain and the solid domain, the coupling analysis and calculation of the fluid domain and the solid domain are carried out to construct the environmental parameters and the load distribution model of the hydraulic cylinder of the gate hoist; According to the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, the stress-strain simulation data of each part of the hydraulic cylinder of the double-hanging-point radial gate hoist at different flow rates are obtained to verify the stress-strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

2. The method for checking the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: The construction process of the initial model of the double-hanging-point radial gate hoist is as follows: According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data; According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

3. The method for checking the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist as claimed in claim 1 is characterized in that: The grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

4. The method for checking the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist as claimed in claim 1 is characterized in that: In the fluid domain, set the material, determine the fluid inlet, outlet and fluid-solid coupling surface boundaries, set surface expansion, and mesh the fluid domain.

5. The method for checking the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: In the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, fixed supports are set for the fixed bearings of the hydraulic cylinder, the radial gate panel bearings and the concrete matrix, and the surfaces corresponding to the fluid-solid coupling surfaces and all solid surfaces are selected in the fluid-solid interface for surface expansion settings and meshing.

6. A double-hanging-point radial gate hoist hydraulic cylinder operation load verification system, characterized in that: include: The dynamic model building module is used to build a dynamic model of the double-hanging-point radial gate hoist according to the dynamic safety opening of the gate, different heights and speeds of the water flow, and the initial model of the double-hanging-point radial gate hoist; The fluid-solid meshing module is used to determine the fluid domain and solid domain based on the dynamic model of the double-hanging-point radial gate hoist and perform meshing respectively; The fluid-solid coupling analysis module is used to perform coupling analysis and calculation on the fluid domain and the solid domain according to the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid domain and the solid domain, and to construct a model of environmental parameters and load distribution of the hydraulic cylinder of the hoist; The load distribution verification module is used to obtain the stress and strain simulation data of each part of the double-hanging-point radial gate hoist hydraulic cylinder under different flow rates according to the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, so as to verify the stress and strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

7. The double-hanging-point radial gate hoist hydraulic cylinder operation load verification system according to claim 6 is characterized in that: In the dynamic model building module, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows: According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data; According to the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist is established, which can characterize the constraints between the various parts of the radial gate.

8. The double-hanging-point radial gate hoist hydraulic cylinder operation load verification system according to claim 6 is characterized in that: In the fluid-solid grid division module, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in the method for verifying the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist as described in any one of claims 1 to 5 are implemented.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps in the method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist as described in any one of claims 1 to 5 are implemented.

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