Simulation test method and device for plunger pump housing and base, and electronic equipment

Abstract

The application discloses a kind of plunger pump shell and base simulation test method, device and electronic equipment.Therein, the method includes: obtaining the plunger pump corresponding plunger pump model, wherein the plunger pump model includes multiple weld sub-models;Obtain the load application time and load application type determined in advance;Based on load application time and load application type, plunger pump model is simulated and tested, and multiple weld sub-models respectively corresponding stress value are obtained;Based on multiple weld sub-models respectively corresponding stress value, the simulation test result of the shell and base of plunger pump is determined.The present application solves the technical problems of poor test result accuracy and poor product quality reliability caused by the incomplete plunger pump test in the related art.

Description

Technical Field

[0001] This invention relates to the field of petroleum equipment, and more specifically, to a simulation testing method, apparatus, and electronic equipment for a plunger pump housing and base. Background Technology

[0002] The vibration performance of the piston pump housing and base plays an important role in the quality assessment of piston pumps. However, in the current field of piston pump design and development, vibration simulation tests are mainly conducted on individual equipment or components such as pump bodies, motors, or piston pump crankshafts. There is no systematic simulation test method for piston pump housings and bases. As a result, there is a lack of effective and cost-effective evaluation methods for piston pumps before trial production, which leads to incomplete piston pump testing and has a certain impact on the production quality of piston pumps.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a simulation testing method, apparatus, and electronic device for a plunger pump housing and base, to at least solve the technical problems of poor test results and poor product quality reliability caused by incomplete testing of plunger pumps in related technologies.

[0005] According to one aspect of the present invention, a simulation test method for a plunger pump housing and base is provided, comprising: obtaining a plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; obtaining a predetermined load application time and load application type; performing a simulation test on the plunger pump model based on the load application time and load application type to obtain stress values ​​corresponding to the multiple weld sub-models respectively; and determining the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively.

[0006] According to another aspect of the present invention, a simulation testing device for a plunger pump housing and base is also provided, comprising: a first acquisition module for acquiring a plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; a second acquisition module for acquiring a predetermined load application time and load application type; a simulation testing module for performing simulation testing on the plunger pump model based on the load application time and load application type to obtain stress values ​​corresponding to the multiple weld sub-models respectively; and a determination module for determining the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively.

[0007] According to another aspect of the present invention, a non-volatile storage medium is also provided, which stores a plurality of instructions adapted for loading and executing any one of the above-described simulation test methods for the plunger pump housing and base by a processor.

[0008] According to another aspect of the present invention, an electronic device is also provided, including one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement any one of the above-described simulation test methods for the plunger pump housing and base.

[0009] In this embodiment of the invention, by obtaining a plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; obtaining a predetermined load application time and load application type; performing simulation tests on the plunger pump model based on the load application time and load application type to obtain stress values ​​corresponding to the multiple weld sub-models respectively; and determining the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively, the invention achieves the goal of comprehensively and accurately testing the plunger pump housing and base by constructing a simulation test model. This improves the comprehensiveness of plunger pump testing, thereby enhancing the accuracy of plunger pump testing and the quality of the plunger pump. Furthermore, it solves the technical problem of poor test result accuracy and poor product quality reliability caused by incomplete plunger pump testing in related technologies. Attached Figure Description

[0010] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0011] Figure 1 This is a schematic diagram of a simulation test method for a plunger pump housing and base according to an embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of an optional simulation test method for a plunger pump housing and base according to an embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of an optional load application time (i.e., state characteristics) according to an embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of a simulation test device for a plunger pump housing and base according to an embodiment of the present invention. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0016] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0017] First, to facilitate understanding of the embodiments of the present invention, some terms or nouns involved in the present invention will be explained below:

[0018] A plunger pump comprises numerous assemblies and components, including a gearbox, crankshaft, bearings, housing, spacer, and hydraulic end. Its working principle involves power being reduced and increased in torque by the gearbox, then transmitted to the crankshaft. The crankshaft drives the connecting rod, crosshead, and plunger in a reciprocating motion, pressurizing and discharging the liquid in the hydraulic end. A typical product design process can be summarized as structural design → process design → testing and verification → market feedback. When encountering failures in testing or after-sales feedback, a complete overhaul of the structural design is necessary, requiring further verification. However, plunger pumps involve numerous raw materials, components, and manufacturing processes. Design changes often incur significant material costs and personnel time, while verifying optimized solutions demands even greater resources. All of these factors increase a company's investment in product research and development and production. More importantly, they impact market confidence in the product, reducing its competitiveness.

[0019] The vibration performance of the piston pump housing and base plays an important role in the quality assessment of piston pumps. However, in the current field of piston pump design and development, vibration simulation tests are mainly conducted on individual equipment or components such as pump bodies, motors, or piston pump crankshafts. There is no systematic simulation test method for piston pump housings and bases. As a result, there is a lack of effective and cost-effective evaluation methods for piston pumps before trial production, which leads to incomplete piston pump testing and has a certain impact on the production quality of piston pumps.

[0020] According to an embodiment of the present invention, a method embodiment for simulation testing of a plunger pump housing and base is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0021] Figure 1 This is a flowchart of a simulation test method for a plunger pump housing and base according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes the following steps:

[0022] Step S102: Obtain the plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models.

[0023] Optionally, the above-mentioned plunger pump model includes at least the following structures: power end housing and window cover, crankshaft, bearing, slide rail, crosshead, long bolts and nuts, spacer, valve box, valve box cap, base, and bottom skid, wherein the constraint boundary of the above-mentioned plunger pump model is located at the bottom skid.

[0024] Optionally, the above-mentioned multiple weld sub-models include at least one of the following: shell support weld model, shell stiffener weld model, cover plate and vertical plate weld model, first observation window weld model, slide rail support weld model, and base key weld model.

[0025] Step S104: Obtain the predetermined load application time and load application type.

[0026] In an optional embodiment, the load application time includes at least the following: a first moment when the bolts in the piston pump model are tightened and have not yet started working; a second moment when the crankshaft of the cylinder included in the piston pump model changes from doing no work to starting to do work; a third moment when the crankshaft of the cylinder included in the piston pump model starts to do work and the load no longer increases, maintaining the same load level; a fourth moment when the load on the crankshaft of the cylinder included in the piston pump model maintains the same load level and subsequently begins to decrease; a fifth moment when the crankshaft of the cylinder included in the piston pump model changes from doing work to doing no work; and a sixth moment when the load on the slide rail of the crankshaft included in the piston pump model is the greatest.

[0027] It should be noted that the different load application times mentioned above correspond to different operating conditions. Due to the different performance of the components in the plunger pump, the test results of different operating condition settings will vary to some extent. Based on the characteristics of the plunger pump housing and base, the embodiments of the present invention set the above 6 operating conditions. Among them, the operating conditions at the second, third, fourth, fifth, and sixth moments are set for the crankshafts of the cylinders included in the plunger pump model, and the number of corresponding operating conditions is determined based on the crankshafts of the cylinders included in the plunger pump model. Taking a 5-cylinder plunger pump as an example, there are a total of 26 operating conditions (i.e., load application times): 1 static operating condition and 5 characteristic operating conditions per cylinder.

[0028] In one optional embodiment, the load application types include at least: crankshaft load, slide rail load, valve box load, and bolt preload. The crankshaft load, after modifying the crankshaft in the plunger pump model to a concentric shaft, is applied to the center point of the crank pin in the plunger pump model. The crankshaft load is divided into axial force and vertical force. The slide rail load is applied to the crosshead position in the plunger pump model. The valve box load is applied to the inner end face of the suction cap in the plunger pump model. The bolt preload is applied to the bolt cross-section position in the plunger pump model.

[0029] It should be noted that due to the different performance characteristics of the components in the plunger pump, the response states of each component will differ depending on the location and method of load application. This embodiment of the invention, considering the characteristics of the plunger pump housing and base, identifies four load application types: crankshaft load, slide rail load, valve box load, and bolt preload, and provides specific load application methods to make the vibration simulation of the plunger pump housing and base more realistic.

[0030] Step S106: Based on the above load application time and the above load application type, the above plunger pump model is simulated and tested to obtain the stress values ​​corresponding to the above multiple weld sub-models.

[0031] In an optional embodiment, the above-mentioned simulation test of the plunger pump model based on the above-mentioned load application time and load application type to obtain the stress values ​​corresponding to the above-mentioned multiple weld sub-models includes: meshing the plunger pump model to obtain the meshing result corresponding to the plunger pump model, wherein the meshing result includes the sub-model mesh corresponding to the above-mentioned multiple weld sub-models, and other meshes corresponding to other predetermined components included in the plunger pump model, wherein the mesh type included in the meshing result corresponding to the plunger pump model includes at least second-order tetrahedral elements and first-order hexahedral elements; when the sub-model mesh corresponding to the above-mentioned multiple weld sub-models and the other meshes corresponding to other predetermined components included in the plunger pump model all meet the preset mesh quality conditions, the simulation test of the plunger pump model is performed based on the above-mentioned load application time and load application type to obtain the stress values ​​corresponding to the above-mentioned multiple weld sub-models.

[0032] Using the above method, before conducting simulation tests on the plunger pump model, it is necessary to determine the mesh quality, that is, to determine whether the meshes corresponding to the sub-models of the multiple weld sub-models, as well as the meshes corresponding to other predetermined components included in the plunger pump model, meet the preset mesh quality conditions. If the mesh quality check passes, the plunger pump model can be simulated and tested.

[0033] Optionally, other predetermined components included in the above-mentioned plunger pump model may include, but are not limited to, components such as vertical plates, cover plates, and end plates.

[0034] Optionally, the above-mentioned preset mesh quality conditions may be, but are not limited to, mesh size quality conditions. For example, the mesh size of other components such as upright plates, cover plates, and end plates may be set to 8-20 mm; the mesh size of the sub-models corresponding to the multiple weld sub-models included in the plunger pump model may be set to 1-2 mm; the mesh growth rate may be set to 1.5-2.5; after all the meshes included in the plunger pump model have been sized, it is determined whether the size of each mesh meets the following mesh size quality conditions: (1) The minimum mesh size of each mesh type included in the plunger pump model is ≥0.5 mm and ≤25 mm; (2) The minimum angle of the triangular mesh included in the plunger pump model is ≥10° and the maximum angle is ≤140°; (3) The collapse degree of the tetrahedral mesh included in the plunger pump model is ≥0.1. If these conditions are met, the simulation test of the plunger pump model will begin.

[0035] In an optional embodiment, before performing simulation tests on the plunger pump model based on the load application time and the load application type to obtain the stress values ​​corresponding to the plurality of weld sub-models, the method further includes: determining the connection relationships included in the plunger pump model.

[0036] Optionally, the connection relationships included in the above-mentioned plunger pump model include at least the following: the connection relationship between the bearing and the housing, the connection relationship between the spacer and the housing, the connection relationship between the base and the housing, the connection relationship between the spacer and the housing, the connection relationship between the spacer and the base, the connection relationship between the spacer and the valve box, the connection relationship between the long bolt and the housing, the connection relationship between the crankshaft and the bearing, the connection relationship between the valve box and the valve box gland, the connection relationship between the long bolt nut and the valve box, the connection relationship between the housing and the valve box, the connection relationship between the housing and the base, the connection relationship between the housing and the spacer, the connection relationship between the base and the spacer, the connection relationship between the base and the skid, and the connection relationship between the slide rail and the housing.

[0037] Optionally, the connection methods corresponding to the connection relationships included in the above plunger pump model include at least: contact connection, binding connection, and rigid coupling connection.

[0038] Step S108: Based on the stress values ​​corresponding to the above-mentioned multiple weld sub-models, determine the simulation test results of the above-mentioned plunger pump housing and base.

[0039] It should be noted that the overall calculation results of the plunger pump model cannot be directly read and evaluated due to mesh convergence issues. Therefore, it is necessary to conduct sub-model analysis on the locations of interest and output the Mises stress values ​​for these locations. These locations include, but are not limited to, the following: the periphery of the shell support weld, the periphery of the shell stiffener weld, the periphery of the cover plate and vertical plate weld, the periphery of the first observation window weld, the periphery of the slide rail support weld, and the periphery of the key weld of the base. This will improve the accuracy of the test results for the plunger pump shell and base.

[0040] Through the above steps S102 to S108, the goal of comprehensively and accurately testing the plunger pump housing and base can be achieved by constructing a simulation test model. This improves the comprehensiveness of plunger pump testing, thereby enhancing the accuracy of plunger pump testing and the quality of the plunger pump. It also solves the technical problem of poor test result accuracy and poor product quality reliability caused by incomplete plunger pump testing in related technologies.

[0041] Based on the embodiments and optional embodiments, this invention proposes an optional implementation method. This embodiment is based on the finite element method, combined with the working principle of a plunger pump, to comprehensively develop a plunger pump simulation method. This method constructs a plunger pump model including components such as the power end housing and window cover, crankshaft, bearings, slide rails, crosshead, long bolts and nuts, spacers, valve box, valve box cap, base, and bottom skid. The overall plunger pump model must include weld seams; therefore, multiple weld seam sub-models are constructed within the plunger pump model (i.e., housing support weld seam model, housing stiffener weld seam model, cover plate and vertical plate weld seam model, first observation window weld seam model, slide rail support weld seam model, and base key weld seam model). The analysis process mainly includes: mesh generation, working condition definition, connection relationships, analysis boundaries, and result output. Figure 2 This is a flowchart of an optional simulation test method for a plunger pump housing and base according to an embodiment of the present invention, such as... Figure 2 As shown, the method includes:

[0042] Step S1, Mesh Generation: A comprehensive mesh generation is performed based on the plunger pump model, and sub-model mesh generation is performed on multiple weld sub-models to obtain the mesh generation result corresponding to the plunger pump model. The mesh generation result includes the sub-model meshes corresponding to each of the multiple weld sub-models (corresponding to the sub-model mesh generation result), as well as other meshes corresponding to other predetermined components included in the plunger pump model (corresponding to the overall mesh generation). Because the plunger pump has a large overall size, the mesh generation must simultaneously consider the accuracy of the calculation results and the computational timeliness. Therefore, the mesh generation method is as follows:

[0043] Step S11: The overall plunger pump model must include the weld seam. The weld seam needs to be provided as a 3D digital model with a mesh size of 5-8mm and at least 2 layers.

[0044] Step S12: Set the other predetermined components included in the plunger pump model, such as vertical plate, cover plate, end plate and other parts, to other grid sizes of 8-20mm. The materials, bolt preload and other parameters are calculated and added according to the design requirements.

[0045] Step S13: Set the mesh size of the sub-models corresponding to the multiple weld sub-models included in the plunger pump model to 1-2mm;

[0046] Step S14: Set the grid growth rate to 1.5-2.5;

[0047] Step S15: Set the mesh type to second-order tetrahedral elements and first-order hexahedral elements.

[0048] Step S2, Mesh quality assessment, determines whether the sub-model meshes corresponding to the multiple weld sub-models, and other meshes corresponding to other predetermined components included in the plunger pump model, meet the preset mesh quality conditions. The preset mesh quality conditions include, but are not limited to:

[0049] (1) The minimum size of each mesh type included in the plunger pump model is ≥0.5mm and ≤25mm;

[0050] (2) The minimum angle of the triangular mesh included in the plunger pump model is ≥10° and the maximum angle is ≤140°;

[0051] (3) The collapse degree of the tetrahedral mesh included in the plunger pump model is ≥0.1.

[0052] Step S3, defining the working condition of the plunger pump model. This analysis type is a static simulation calculation. To fully reflect the motion process of the plunger pump and its vibration characteristics' impact on the load, all loads are input from dynamic simulation. The dynamic simulation must use a three-dimensional flexible body model and run multiple complete plunger pump reciprocating cycles. Referring to the operating principle of the plunger pump, a suitable load application time is selected, which is the working condition: taking the crankshaft of the first cylinder in the plunger pump model at the front dead center as the angle zero point, and selecting state characteristic points within one counterclockwise rotation cycle (360°), to simultaneously cover both extreme and variable load values, the following positions are selected (for the load application time of one cylinder):

[0053] State characteristic 1: The moment of stillness before work begins (i.e., the first moment) after the bolts are tightened.

[0054] State characteristic 2: The minimum value is taken at the second moment when the state changes from doing no work to starting to do work (e.g., ...). Figure 3 (as shown);

[0055] State characteristic 3: Work begins and the load no longer increases. At the third moment, maintaining the same load level, take its maximum value (e.g., ...). Figure 3 (as shown);

[0056] State characteristic 4: When the load maintains the same load level and then begins to decrease, take its maximum value at the fourth moment (e.g., ...). Figure 3 (as shown);

[0057] State characteristic 5: The fifth moment when the work transitions to no work, take its minimum value (e.g., Figure 3 (as shown);

[0058] State characteristic 6: The sixth moment when the load on the slide rail is the greatest.

[0059] In summary, taking a 5-cylinder plunger pump as an example, there are a total of 26 operating conditions (i.e., load application time): 1 static operating condition and 5 characteristic operating conditions per cylinder.

[0060] Step S4: Determine the connection relationships included in the plunger pump model. These connections mainly include: the connection between the bearing and the housing; the connection between the spacer and the housing; the connection between the base and the housing; the connection between the spacer and the housing; the connection between the spacer and the base; the connection between the spacer and the valve box; the connection between the long bolt and the housing; the connection between the crankshaft and the bearing; the connection between the valve box and the valve box gland; the connection between the long bolt nut and the valve box; the connection between the housing and the valve box; the connection between the housing and the base; the connection between the housing and the spacer; the connection between the base and the spacer; the connection between the base and the skid; and the connection between the slide rail and the housing. Connection methods include, but are not limited to, contact connection, binding connection, and rigid coupling connection. The bolt model is simplified, and other models are used to demonstrate the load and displacement transfer relationship between the two components.

[0061] Step S5, determining the analysis boundaries in the plunger pump model, including the application of loads and the determination of constraints in the plunger pump model. Specifically, it includes the following sub-steps:

[0062] Step S51 involves applying loads to the piston pump model, including crankshaft load, slide rail load, valve box load, and bolt preload. For crankshaft load application, since the crankshaft is an eccentric shaft, direct loading would cause the housing to bear additional torque (this torque is borne by the power output end). Therefore, the crankshaft needs to be modified to a concentric shaft first. The crankshaft load is applied to the center point of the crank pin, decomposed into axial and vertical forces. For slide rail load application, the slide rail load is applied to the crosshead and transmitted to the slide rail through the connection between the crosshead and the slide rail. For valve box load application, only axial force is considered in the valve box, applied directly to the inner end face of the suction cap. For bolt preload application, the bolt preload is applied directly to the bolt cross-section.

[0063] Step S52: Use the symmetrical degree of freedom of the bottom skid section and the full degree of freedom of the bottom surface as the constraint boundaries of the plunger pump model.

[0064] Step S6: After completing the settings of steps S1 to S5 and passing the mesh quality check (i.e., the meshes corresponding to the sub-models of the multiple weld sub-models and the meshes corresponding to other predetermined components included in the plunger pump model meet the preset mesh quality conditions), the plunger pump model is simulated and tested based on the load application time and load application type to obtain the stress values ​​corresponding to the multiple weld sub-models. Based on the stress values ​​corresponding to the multiple weld sub-models, the simulation test results of the plunger pump housing and base are determined.

[0065] It should be noted that the overall calculation results of the plunger pump model cannot be directly read and evaluated due to mesh convergence issues. Therefore, it is necessary to conduct sub-model analysis on the locations of interest and output the Mises stress values ​​for these locations. These locations include, but are not limited to, the following: the periphery of the shell support weld, the periphery of the shell stiffener weld, the periphery of the cover plate and vertical plate weld, the periphery of the first observation window weld, the periphery of the slide rail support weld, and the periphery of the key weld of the base. This will improve the accuracy of the test results for the plunger pump shell and base.

[0066] This embodiment also provides a simulation testing device for a plunger pump housing and base. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the terms "module" and "device" can refer to a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0067] According to an embodiment of the present invention, an apparatus embodiment for implementing the above-described simulation testing method for the plunger pump housing and base is also provided. Figure 4 This is a schematic diagram of the structure of a simulation testing device for a plunger pump housing and base according to an embodiment of the present invention, as shown below. Figure 4 As shown, the simulation testing device for the plunger pump housing and base includes: a first acquisition module 400, a second acquisition module 402, a simulation testing module 404, and a determination module 406, wherein:

[0068] The first acquisition module 400 is used to acquire the plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models.

[0069] The second acquisition module 402 mentioned above is connected to the first acquisition module 400 and is used to acquire the predetermined load application time and load application type;

[0070] The simulation test module 404 is connected to the second acquisition module 402 and is used to perform simulation tests on the plunger pump model based on the load application time and the load application type to obtain the stress values ​​corresponding to the multiple weld sub-models.

[0071] The aforementioned determining module 406 is connected to the aforementioned simulation test module 404 and is used to determine the simulation test results of the aforementioned plunger pump housing and base based on the stress values ​​corresponding to the aforementioned multiple weld sub-models.

[0072] In this embodiment of the invention, by setting up the first acquisition module 400, which is used to acquire the plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; the second acquisition module 402, connected to the first acquisition module 400, is used to acquire the predetermined load application time and load application type; the simulation test module 404, connected to the second acquisition module 402, is used to perform simulation tests on the plunger pump model based on the load application time and load application type, and obtain the stress values ​​corresponding to the multiple weld sub-models respectively; the determination module 406, connected to the simulation test module 404, is used to determine the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively. This achieves the goal of comprehensively and accurately testing the plunger pump housing and base by constructing a simulation test model, thereby improving the comprehensiveness of plunger pump testing, and thus improving the accuracy of plunger pump testing and the quality of plunger pump. This solves the technical problem of poor test result accuracy and poor product quality reliability caused by incomplete plunger pump testing in related technologies.

[0073] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0074] It should be noted that the first acquisition module 400, the second acquisition module 402, the simulation test module 404, and the determination module 406 mentioned above correspond to steps S102 to S108 in the embodiments. The instances and application scenarios implemented by the above modules and their corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should be noted that the above modules, as part of the device, can run on a computer terminal.

[0075] It should be noted that the optional or preferred implementation methods of this embodiment can be found in the relevant descriptions in the embodiments, and will not be repeated here.

[0076] The aforementioned simulation testing device for the plunger pump housing and base may also include a processor and a memory. The first acquisition module 400, the second acquisition module 402, the simulation testing module 404, the determination module 406, etc., are all stored in the memory as program modules, and the processor executes the aforementioned program modules stored in the memory to realize the corresponding functions.

[0077] The processor contains cores, and the cores are used to retrieve corresponding program modules from the memory. One or more cores can be set. The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM), and / or non-volatile memory in the form of, for example, read-only memory (ROM) or flash RAM. The memory includes at least one memory chip.

[0078] According to an embodiment of the present application, an embodiment of a non-volatile storage medium is further provided. Optionally, in this embodiment, the non-volatile storage medium includes a stored program, and when the program runs, it controls the device where the non-volatile storage medium is located to execute any one of the simulation test methods for the plunger pump housing and base.

[0079] Optionally, in this embodiment, the non-volatile storage medium can be located in any one of the computer terminals in a computer terminal group in a computer network or in any one of the mobile terminals in a mobile terminal group. The non-volatile storage medium includes a stored program.

[0080] Optionally, when the program runs, it controls the device where the non-volatile storage medium is located to execute the following functions: obtaining a plunger pump model corresponding to the plunger pump, where the plunger pump model includes a plurality of weld sub-models; obtaining a pre-determined load application time and load application type; based on the load application time and the load application type, performing a simulation test on the plunger pump model to obtain stress values corresponding to the plurality of weld sub-models respectively; based on the stress values corresponding to the plurality of weld sub-models respectively, determining the simulation test results of the housing and base of the plunger pump.

[0081] According to an embodiment of the present application, an embodiment of a processor is further provided. Optionally, in this embodiment, the processor is used to run a program, and when the program runs, it executes any one of the simulation test methods for the plunger pump housing and base.

[0082] According to an embodiment of the present application, an embodiment of a computer program product is further provided. When executed on a data processing device, it is adapted to execute a program initialized with the steps of any one of the simulation test methods for the plunger pump housing and base.

[0083] Optionally, when the aforementioned computer program product is executed on a data processing device, it is suitable to execute an initialization program with the following method steps: obtaining a plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; obtaining a predetermined load application time and load application type; performing simulation tests on the plunger pump model based on the load application time and load application type to obtain stress values ​​corresponding to the multiple weld sub-models respectively; and determining the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively.

[0084] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: obtaining a plunger pump model corresponding to a plunger pump, wherein the plunger pump model includes multiple weld sub-models; obtaining a predetermined load application time and load application type; performing simulation tests on the plunger pump model based on the load application time and load application type to obtain stress values ​​corresponding to the multiple weld sub-models respectively; and determining the simulation test results of the plunger pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models respectively.

[0085] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0086] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of modules described above can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules, and may be electrical or other forms.

[0088] The modules described above as separate components may or may not be physically separate. Similarly, the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0089] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0090] If the aforementioned integrated modules are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable non-volatile storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a non-volatile storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned non-volatile storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0091] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A simulation test method for a plunger pump housing and base, characterized in that, include: Obtain the plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; Obtain the predetermined load application time and load application type; Based on the load application time and the load application type, the plunger pump model is simulated and tested to obtain the stress values ​​corresponding to the multiple weld sub-models respectively; wherein, the load application time corresponds to different working conditions, the load application type corresponds to different load application positions and application methods, and the load application type includes at least: crankshaft load, slide rail load, valve box load and bolt preload. Based on the stress values ​​corresponding to the multiple weld sub-models, the simulation test results of the piston pump housing and base are determined. The time at which the load is applied includes at least: The bolts in the plunger pump model are tightened, and it is the first moment before it starts working; The piston pump model includes the second moment when the cylinder crankshaft changes from doing no work to starting to do work. The piston pump model includes a third moment in which the cylinder crankshaft begins to do work and the load no longer increases, maintaining the same load level. The piston pump model includes a crankshaft whose load remains at the same level until the fourth moment when it begins to decrease. The fifth moment in the piston pump model when the cylinder crankshaft transitions from doing work to not doing work; The sixth moment in the piston pump model where the slide rail experiences the greatest load.

2. The method according to claim 1, characterized in that, The crankshaft load is applied to the center point of the crank pin in the piston pump model after the crankshaft in the piston pump model is modified to a concentric shaft. The slide rail load is applied to the crosshead position in the plunger pump model; The valve box load is applied to the inner end face of the suction cap in the plunger pump model; The bolt preload is applied at the bolt cross-section position in the plunger pump model.

3. The method according to claim 1, characterized in that, Before performing simulation tests on the plunger pump model based on the load application time and the load application type to obtain the stress values ​​corresponding to the multiple weld sub-models, the method further includes: The connection relationships included in the plunger pump model are determined, wherein the connection relationships included in the plunger pump model include at least the following: the connection relationship between the bearing and the housing, the connection relationship between the base and the housing, the connection relationship between the spacer and the housing, the connection relationship between the spacer and the base, the connection relationship between the spacer and the valve box, the connection relationship between the long bolt and the housing, the connection relationship between the crankshaft and the bearing, the connection relationship between the valve box and the valve box gland, the connection relationship between the long bolt nut and the valve box, the connection relationship between the housing and the valve box, the connection relationship between the base and the skid, and the connection relationship between the slide rail and the housing. The connection methods corresponding to the connection relationships included in the plunger pump model include at least the following: contact connection, binding connection, and rigid coupling connection.

4. The method according to claim 1, characterized in that, The plunger pump model is simulated and tested based on the load application time and the load application type to obtain the stress values ​​corresponding to the multiple weld sub-models, including: The plunger pump model is meshed to obtain the meshing result corresponding to the plunger pump model. The meshing result includes the sub-model mesh corresponding to the multiple weld sub-models, as well as other meshes corresponding to other predetermined components included in the plunger pump model. The mesh types included in the meshing result corresponding to the plunger pump model include at least second-order tetrahedral elements and first-order hexahedral elements. When the sub-model meshes corresponding to the multiple weld sub-models and the other meshes corresponding to other predetermined components included in the plunger pump model all meet the preset mesh quality conditions, the plunger pump model is simulated and tested based on the load application time and the load application type to obtain the stress values ​​corresponding to the multiple weld sub-models.

5. The method according to any one of claims 1 to 4, characterized in that, The plunger pump model includes at least the following structures: power end housing and window cover, crankshaft, bearing, slide rail, crosshead, long bolts and nuts, spacer, valve box, valve box cap, base, and bottom skid, wherein the constraint boundary of the plunger pump model is located at the bottom skid.

6. The method according to any one of claims 1 to 4, characterized in that, The plurality of weld sub-models include at least one of the following: shell support weld model, shell stiffener weld model, cover plate and vertical plate weld model, first observation window weld model, slide rail support weld model, and base key weld model.

7. A simulation testing device for a plunger pump housing and base, characterized in that, include: The first acquisition module is used to acquire the plunger pump model corresponding to the plunger pump, wherein the plunger pump model includes multiple weld sub-models; The second acquisition module is used to acquire the predetermined load application time and load application type; The simulation test module is used to perform simulation tests on the plunger pump model based on the load application time and the load application type, and obtain the stress values ​​corresponding to the multiple weld sub-models respectively; wherein, the load application time corresponds to different working conditions, the load application type corresponds to different load application positions and application methods, and the load application type includes at least: crankshaft load, slide rail load, valve box load and bolt preload. The determination module is used to determine the simulation test results of the piston pump housing and base based on the stress values ​​corresponding to the multiple weld sub-models. The time at which the load is applied includes at least: The bolts in the plunger pump model are tightened, and it is the first moment before it starts working; The piston pump model includes the second moment when the cylinder crankshaft changes from doing no work to starting to do work. The piston pump model includes a third moment in which the cylinder crankshaft begins to do work and the load no longer increases, maintaining the same load level. The piston pump model includes a crankshaft whose load remains at the same level until the fourth moment when it begins to decrease. The fifth moment in the piston pump model when the cylinder crankshaft transitions from doing work to not doing work; The sixth moment in the piston pump model where the slide rail experiences the greatest load.

8. A non-volatile storage medium, characterized in that, The non-volatile storage medium stores multiple instructions, which are adapted to be loaded by a processor and executed by the simulation test method for the plunger pump housing and base as described in any one of claims 1 to 6.

9. An electronic device, characterized in that, It includes one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the simulation test method for the plunger pump housing and base as described in any one of claims 1 to 6.

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