Gas turbine assembly assessment method based on virtual reality

Abstract

The invention aims to provide a gas turbine assembly assessment method based on virtual reality, and belongs to the field of virtual assembly. The method comprises the following steps: establishing a system typical part assembly process database; establishing a system three-dimensional model database; building a system hardware environment by using virtual reality head-mounted display equipment; performing assembly checking on the virtual assembly checking process of the gas turbine; generating a three-dimensional model with a collision detection function; setting a gas turbine assembly process as an assessment reference standard, and outputting a system assessment model; performing system integration on the three-dimensional model and the assessment model, and designing and developing an assessment system; designing and developing a human-computer interaction interface, and integrating the human-computer interaction interface with an assessment system to obtain a gas turbine assembly assessment system based on virtual reality; and testing by using the assessment model, completing assembly assessment, and outputting an assessment result. According to the invention, students can learn and master the maintenance and assembly operation of the gas turbine in a virtual reality examination mode.

Description

Technical Field

[0001] The invention relates to a virtual assembly method. Background Art

[0002] As a key component in the power system, the gas turbine has a high degree of system integration and automation, and the corresponding operation, maintenance, inspection and repair technology requirements are high. Before maintenance personnel and assembly workers perform on-site operations, they need to practice disassembly, inspection, maintenance and other operations and evaluate the results. However, building physical prototypes for trainees to practice and evaluate is not only costly and inefficient, but also accompanied by many safety hazards, which brings considerable challenges to trainee evaluation. By using virtual reality technology to simulate the real assembly scene of equipment in a real environment, trainees can be evaluated for gas turbine assembly in a virtual scene. It has a highly immersive experience and a lightweight virtual reality interactive operation environment, providing a full-factor, full-process virtual assembly evaluation solution. After searching the existing technical literature, it was found that the patent "A Virtual Reality Industrial Simulation Training System" applied by Chen Xuewen et al. integrates virtual reality technology and industrial simulation training into a general method suitable for large-space operations, and has achieved good results. However, this method cannot be applied to the professional field of gas turbines, including the problem of realizing gas turbine assembly in a limited space, and there is also a lack of logical control methods for gas turbine assembly process evaluation. Summary of the invention

[0003] The purpose of the present invention is to provide a gas turbine assembly assessment method based on virtual reality, which can realize immersive assembly process assessment of key parts of a gas turbine in a virtual environment.

[0004] The object of the present invention is achieved in that:

[0005] The present invention provides a gas turbine assembly assessment method based on virtual reality, which is characterized by comprising the following steps:

[0006] (1) Analyze the assembly process of typical parts of gas turbine system and establish a database of assembly process of typical parts of the system;

[0007] (2) using 3D Max technology to classify and model typical parts, tooling and workshops of the gas turbine system in the assembly process database of step (1), prefabricate and render three-dimensional models based on geometric size parameters and material performance parameters of the gas turbine, tooling and workshop, and establish a system three-dimensional model database;

[0008] (3) Using a virtual reality head mounted display device to build a system hardware environment, using the three-dimensional simulation model prefabricated in step (2) to build a system virtual environment, and further lightweighting the three-dimensional simulation model;

[0009] (4) compiling a gas turbine maintenance and assembly process flow based on the assembly process database in step (1), importing the compiled gas turbine maintenance and assembly process flow into the system environment built in step (3), and performing assembly verification on the gas turbine virtual assembly assessment process;

[0010] (5) Deepen the 3D model of typical gas turbine system components, including loading rigid body components and collision body components to generate a 3D model with collision detection function;

[0011] (6) setting the gas turbine assembly process written in step (4) as the assessment benchmark standard, integrating it into the system as key input information, and outputting the system assessment model;

[0012] (7) integrating the three-dimensional model generated in step (5) with the assessment model generated in step (6) to design and develop an assessment system;

[0013] (8) Designing and developing a human-computer interaction interface, integrating it with the assessment system developed in step (7), and obtaining a gas turbine assembly assessment system based on virtual reality;

[0014] (9) The trainees use the assessment model in the system after integration in step (8) to conduct the test. The trainees complete the assembly assessment by themselves, and the system outputs the assessment results.

[0015] The present invention may also include:

[0016] 1. The step (1) of establishing a gas turbine system assembly process database comprises the following steps:

[0017] A. Write the assembly process plan for the gas turbine and build the framework of the system assembly process database;

[0018] B. Collect typical parts assembly process data, clean, organize and classify the collected data;

[0019] C. Establish typical parts assembly process method module;

[0020] D. Establish a general description language standard for typical parts assembly processes;

[0021] E. Integrate the typical parts assembly process data method module and the general assembly process description language into the system assembly process database.

[0022] 2. Step (2) Establishing a three-dimensional model database of a gas turbine system includes the following steps:

[0023] a. Count, sort and classify the three-dimensional models that need to be modeled;

[0024] b. Use 3d Max technology to create a three-dimensional model and render the material of the three-dimensional model;

[0025] c. Perform parametric curve and surface triangulation on the 3D model, and use triangle network to approximate the accurate 3D model;

[0026] d. Design the framework of the system 3D model database and establish the system 3D model database.

[0027] 3. The gas turbine assembly process flow in step (4) includes the following steps:

[0028] Ⅰ. Sort out the assembly process of gas turbines according to the assembly process database;

[0029] Ⅱ. Sort out the logical relationship between all method modules and design the logical process of gas turbine assembly process;

[0030] III. Draw a flow chart to standardize the gas turbine assembly process;

[0031] IV. Use the standard maintenance and assembly general description language to write the gas turbine maintenance and assembly process flow.

[0032] 4. The specific steps of step (5) are:

[0033] ① Load the model of the key components of the gas turbine with Rigidbody and BoxCollider in the Unity 3D engine;

[0034] ② Check Use Gravity in the Rigidbody;

[0035] ③Set the Edit Collider option in the Box Collider collision body and edit it to the appropriate size;

[0036] ④In addition to methods ①, ②, and ③, write C# language logic GetComponent <boxcollider>().isTrigger function's bool value to switch the model's collision detection state.

[0037] 5. The development of the assessment model in step (6) includes the following steps:

[0038] ⅰ. Write the assessment function module plan and design the technical framework of the assessment function module;

[0039] ⅱ. Design and develop assembly verification function modules based on the gas turbine maintenance and assembly process;

[0040] ⅲ. Write the elements of the assessment process and develop the assessment function module;

[0041] ⅳ. The assembly verification function module is integrated with the assessment function module to generate an assessment model.

[0042] The advantages of the present invention are:

[0043] 1. The present invention can be used by trainees in gas turbine maintenance and assembly assessment scenarios;

[0044] 2. Trainees can learn and master gas turbine maintenance and assembly operations through virtual reality assessment;

[0045] 3. For some smaller spaces, the system simulates the real assembly environment and calculates the operating space required by the personnel, their own spatial position and the accuracy of the assembly position to automatically decide whether the assembly can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the assessment system architecture of the present invention;

[0047] Figure 2 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0048] The present invention is described in more detail below with reference to the accompanying drawings:

[0049] Combination Figure 1-2 A gas turbine assembly assessment method based on virtual reality in the present invention comprises the following steps:

[0050] Step 1: Analyze the typical parts assembly process of the gas turbine system and establish a typical parts assembly process database for the system. (1) Write the gas turbine assembly process plan and build the framework of the system assembly process database; (2) Collect typical parts assembly process data, clean, organize and classify the collected data; (3) Establish a typical parts assembly process method module; (4) Establish a typical parts assembly process general description language standard; (5) Integrate the typical parts assembly process data method module and the assembly process general description language into the system assembly process database.

[0051] Step 2: Use 3dMax technology to classify and model typical parts, tooling and workshops of the gas turbine system in the assembly process database of step 1. Prefabricate and render three-dimensional models based on the precise geometric size parameters and material performance parameters of the gas turbine, tooling and workshop, and establish a system three-dimensional model database. (1) Count, sort and classify the three-dimensional models that need to be modeled; (2) Use 3d Max technology to make three-dimensional models and render the materials of the three-dimensional models; (3) Perform parametric curve and surface triangulation on a large number of three-dimensional models, and use triangle networks to approximate the precise three-dimensional models; (4) Design the functional structure of the system three-dimensional model database and establish the system three-dimensional model database.

[0052] Step 3: Use a virtual reality head mounted display device to build the system hardware environment, build the system virtual environment with the 3D simulation model prefabricated in step 2, and further lightweight the 3D simulation model. (1) Integrate the 3D model into the system virtual environment; (2) Simplify the internal structure of the 3D model, hide or delete unnecessary structural models; (3) Reduce the rendering effects of light, shadow, material, etc. of the components in the internal structure of the 3D model to generate a lightweight 3D model.

[0053] Step 4: Based on the assembly process database in step 1, compile the gas turbine maintenance and assembly process flow, import the compiled gas turbine maintenance and assembly process flow into the system environment built in step 3, and perform precise assembly verification on the gas turbine virtual assembly assessment process. (1) According to the assembly process database, sort out the gas turbine assembly process; (2) Sort out the logical relationship between all method modules and design the gas turbine maintenance and assembly process logic flow; (3) Draw a flowchart to standardize the gas turbine maintenance and assembly process; (4) Use the standard maintenance and assembly general description language to compile the gas turbine maintenance and assembly process flow.

[0054] Step 5: Deepen the 3D model of typical parts of the gas turbine system, including loading rigid body components and collider components to generate a 3D model with collision detection function. (1) In the Unity 3D engine, load the model of the key parts of the gas turbine with Rigidbody and Box Collider; (2) Check the UseGravity in the Rigidbody; (3) Set the Edit Collider option in the Box Collider to edit it to the appropriate size; (4) In addition to methods (1), (2), and (3), write the C# language logic GetComponent <boxcollider>().isTrigger function's bool value to switch the model's collision detection state.

[0055] Step 6: Set the gas turbine maintenance and assembly process written in step 4 as the assessment benchmark, integrate it into the system as input, and output the system assessment model. (1) Write the assessment function module plan and design the technical framework of the assessment function module; (2) Based on the gas turbine maintenance and assembly process flow, design and develop the assembly verification function module; (3) Write the assessment process elements and develop the assessment function module; (4) Integrate the assembly verification function module with the assessment function module to generate the assessment model.

[0056] Step 7: Integrate it with the 3D model generated in step 5 and the system assessment model generated in step 6 to design and develop a training system.

[0057] Step 8: Design and develop a human-computer interaction interface and integrate it with the assessment system developed in step 7 to obtain a gas turbine assembly assessment system based on virtual reality. (1) Sort out the names of training scenario tasks and design a human-computer interaction interface; (2) Write a system manual and develop a system usage guidance function; (3) Develop a human-computer interaction function.

[0058] Step 9: Trainees use the assessment model in the system integrated in step 8 for testing. Trainees complete the assembly assessment by themselves, and the system automatically outputs the assessment results.< / boxcollider> < / boxcollider>

Claims

1. A gas turbine assembly assessment method based on virtual reality, characterized by: The steps include: (1) Analyze the assembly process of typical parts of gas turbine system and establish a database of assembly process of typical parts of the system; (2) using 3dMax technology to classify and model typical parts, tooling and workshops of the gas turbine system in the assembly process database of step (1), prefabricate and render three-dimensional models based on geometric size parameters and material performance parameters of the gas turbine, tooling and workshop, and establish a three-dimensional model database of the system; (3) Using a virtual reality head mounted display device to build a system hardware environment, using the three-dimensional simulation model prefabricated in step (2) to build a system virtual environment, and further lightweighting the three-dimensional simulation model; (4) compiling a gas turbine maintenance and assembly process flow based on the assembly process database in step (1), importing the compiled gas turbine maintenance and assembly process flow into the system environment built in step (3), and performing assembly verification on the gas turbine virtual assembly assessment process; (5) Deepen the 3D model of typical gas turbine system components, including loading rigid body components and collision body components to generate a 3D model with collision detection function; (6) setting the gas turbine assembly process written in step (4) as the assessment benchmark standard, integrating it into the system as key input information, and outputting the system assessment model; (7) integrating the three-dimensional model generated in step (5) with the assessment model generated in step (6) to design and develop an assessment system; (8) Designing and developing a human-computer interaction interface, integrating it with the assessment system developed in step (7), and obtaining a gas turbine assembly assessment system based on virtual reality; (9) The trainees use the assessment model in the system after integration in step (8) to conduct the test. The trainees complete the assembly assessment by themselves, and the system outputs the assessment results.

2. The gas turbine assembly assessment method based on virtual reality according to claim 1 is characterized by: The step (1) of establishing a gas turbine system assembly process database includes the following steps: A. Write the assembly process plan for the gas turbine and build the framework of the system assembly process database; B. Collect typical parts assembly process data, clean, organize and classify the collected data; C. Establish typical parts assembly process method module; D. Establish a general description language standard for typical parts assembly processes; E. Integrate the typical parts assembly process data method module and the general assembly process description language into the system assembly process database.

3. The gas turbine assembly assessment method based on virtual reality according to claim 1 is characterized by: Step (2) of establishing a three-dimensional model database of a gas turbine system comprises the following steps: a. Count, sort and classify the three-dimensional models that need to be modeled; b. Use 3dMax technology to create a 3D model and render the material of the 3D model; c. Perform parametric curve and surface triangulation on the 3D model, and use triangle network to approximate the accurate 3D model; d. Design the framework of the system 3D model database and establish the system 3D model database.

4. The gas turbine assembly assessment method based on virtual reality according to claim 1 is characterized by: The gas turbine assembly process flow in writing step (4) includes the following steps: Ⅰ. Sort out the assembly process of gas turbines according to the assembly process database; Ⅱ. Sort out the logical relationship between all method modules and design the logical process of gas turbine assembly process; III. Draw a flow chart to standardize the gas turbine assembly process; IV. Use the standard maintenance and assembly general description language to write the gas turbine maintenance and assembly process flow.

5. The gas turbine assembly assessment method based on virtual reality according to claim 1 is characterized by: step( The specific steps of 5) are: ① Load the model of the key components of the gas turbine with Rigidbody and Box Collider in the Unity 3D engine; ② Check Use Gravity in the Rigidbody; ③Set the Edit Collider option in the Box Collider collision body and edit it to the appropriate size; ④In addition to methods ①, ②, and ③, write C# language logic GetComponent <boxcollider> ().isTrigger function's bool value to switch the model's collision detection state.< / boxcollider> 6. The gas turbine assembly assessment method based on virtual reality according to claim 1 is characterized by: The development of the assessment model in step (6) includes the following steps: ⅰ. Write the assessment function module plan and design the technical framework of the assessment function module; ⅱ. Design and develop assembly verification function module based on gas turbine maintenance and assembly process flow; ⅲ. Write assessment process elements and develop assessment function module; ⅳ. The assembly verification function module is integrated with the assessment function module to generate an assessment model.

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