Steam Turbine Foundation Design Method Based on PDMS

Abstract

This invention provides a turbine foundation design method based on PDMS, comprising the following steps: establishing a support platform model in a PDMS model based on the external dimensions of the upper components located at the top of the turbine unit, the support platform model being used to support the upper components; establishing a support column model based on the height of the lower components located below the upper components and the operating level elevation of the turbine unit, the support column model being used to support the support platform model; establishing an upper component model on the support platform model, and establishing a lower component model below the support platform model; adjusting the shape and dimensions of the support platform model and the support column model through collision checks; and determining the actual shape and dimensions of the turbine foundation based on the adjusted shape and dimensions of the support platform model and the support column model. The turbine foundation layout designed by this invention is reasonable and accurate.

Description

Technical Field

[0001] This invention relates to the technical field of power plant design thermal engines, and more specifically, to a steam turbine foundation design method based on PDMS. Background Technology

[0002] PDMS (Plant Design Management System) is a 3D layout design and management system for factories. The steam turbine foundation is the foundation for the steam turbine and generator. A steam turbine, also known as a steam turbine engine, is a high-speed rotating steam power unit. It converts the thermal energy of steam into mechanical energy, which is then converted into electrical energy by the generator for the power plant. Steam turbines and generators are crucial mechanical equipment in power plants. In the construction and design of small and medium-sized power plants, the design of the steam turbine foundation is one of the first issues to be addressed by the thermal engine specialists, and its design quality directly affects the project's progress. However, steam turbine foundation design is a combined effort of thermal engine and architectural specialties, requiring a rational layout. The unit structure is complex, with numerous piping components, and the steam turbine foundation is enormous, making precise layout difficult. Often, discrepancies arise between the installed components and the actual on-site steam turbine foundation, leading to rework. Summary of the Invention

[0003] In view of the above problems, the purpose of this invention is to provide a steam turbine foundation design method based on PDMS, which uses PDMS model to establish steam turbine foundation model and unit model, finds interference points, and designs a reasonable and accurate steam turbine foundation layout.

[0004] This invention provides a steam turbine foundation design method based on PDMS, comprising the following steps:

[0005] A support platform model is established in the PDMS model based on the external dimensions of the upper component located at the top of the unit. The support platform model is used to support the upper component.

[0006] Based on the height of the lower component located below the upper component and the operating level elevation of the unit, a support column model is established, which is used to support the support platform model.

[0007] An upper component model is built on the support platform model, and a lower component model is built on the lower part of the support platform model.

[0008] The shape and size of the support platform model and the support column model are adjusted through collision testing;

[0009] Based on the adjusted shape and dimensions of the support platform model and the support column model, the actual shape and dimensions of the turbine foundation are determined.

[0010] Before establishing the support platform model, the process also includes: establishing a house model for placing the support platform model and the support column model, adjusting the position points of the support platform model and the support column model in the house model, and determining the actual position of the turbine foundation based on the adjusted position points.

[0011] The upper component model includes a steam turbine model and a generator model, and the lower component model includes a condenser model, a steam turbine bearing housing model, and a generator bearing housing model. The model of each device is established according to the actual installation sequence of the equipment in each model.

[0012] Before establishing the turbine model and the generator model, a turbine mounting slot model and a generator mounting slot model are opened on the upper part of the support platform model.

[0013] After the model of each device is created, a collision test is performed. If a collision point is found, the shape and size of the support platform model and the support column model are adjusted according to the collision point until the collision point disappears.

[0014] After establishing the upper component model and the lower component model, the process further includes: establishing each valve model, performing collision checks, and if a collision point occurs, adjusting the shape and size of the support platform model and the support column model according to the collision point until the collision point disappears.

[0015] After establishing the upper component model and the lower component model, the method further includes: establishing each pipe model, performing collision checks, and if a collision point occurs, adjusting the shape and size of the support platform model and the support column model according to the collision point until the collision point disappears.

[0016] After establishing the upper component model and the lower component model, the method further includes: establishing a reserved hole model and an embedded part model on both the support platform model and the support column model, and determining the actual positions of the reserved holes and embedded parts based on the reserved hole model and the embedded part model.

[0017] After establishing the upper component model and the lower component model, the method further includes: establishing instrument measurement point simulation points, equipment interface simulation points, and electrical connection models; and determining the positions of the instrument measurement points, equipment interfaces, and electrical connections on the turbine foundation based on the instrument measurement point simulation points, equipment interface simulation points, and electrical connection models.

[0018] The support platform model includes a cuboid platform model, and the support column model includes eight support columns disposed below the support platform model.

[0019] The turbine foundation design method based on PDMS according to the present invention includes the following steps: A support platform model is established in the PDMS model based on the external dimensions of the upper components located at the top of the unit. The support platform model supports the upper components. A support column model is established based on the height of the lower components located below the upper components and the operating floor elevation of the unit. The support column model supports the support platform model. An upper component model is established on the support platform model, and a lower component model is established below the support platform model. Collision testing is performed, and the shape and dimensions of the support platform model and the support column model are adjusted. Based on the adjusted shape and dimensions of the support platform model and the support column model, the actual shape and dimensions of the turbine foundation are determined. This invention establishes a complete turbine foundation model and unit model in the PDMS model, enabling early detection of interference points between various components and the turbine foundation. This allows for timely modifications to the turbine foundation design, making the design more reasonable, accurate, fast, and intuitive. It avoids potential errors, losses, and rework during the installation and construction phases, facilitates communication and coordination among designers from various disciplines, improves the accuracy of on-site construction, and shortens the construction period.

[0020] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below and particularly pointed out in the claims. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0021] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings and the contents of the claims, and with a more complete understanding of the invention. In the drawings:

[0022] Figure 1 A flowchart of a steam turbine foundation design method based on PDMS according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a steam turbine foundation model according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the unit model according to an embodiment of the present invention;

[0025] Among them, 1-support platform model, 2-support column model, 3-upper component model, 4-lower component model, 5-steam turbine model, 6-generator model, 7-condenser model, 8-steam turbine mounting slot model, 9-generator mounting slot model, 10-steam valve model, and 11-pipeline model.

[0026] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0027] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0028] This invention can be modified and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this particular implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0029] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this invention, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0030] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0031] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0032] The terminology used in this application is for illustrative purposes only and is not intended to limit the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0033] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0034] To more clearly illustrate the technical solution of the present invention, the following is a brief explanation of some of the technical terms involved in the present invention.

[0035] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] Figure 1 A flowchart of a steam turbine foundation design method based on PDMS according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a steam turbine foundation model according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the unit model according to an embodiment of the present invention;

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the PDMS-based steam turbine foundation design method proposed in this embodiment can be used to design steam turbine foundations, as well as other building foundation structures.

[0038] Steam turbine foundations are used to support the equipment in a generating unit. They are often very large, and the unit contains numerous pieces of equipment; therefore, the foundation's structure must be suitable for the installation of each piece of equipment. However, steam turbine foundations constructed according to design drawings are often unsuitable for equipment installation, requiring rework and causing project losses. This PDMS-based steam turbine foundation design method can accurately design steam turbine foundations and improve construction efficiency.

[0039] This PDMS-based steam turbine foundation design method includes the following steps:

[0040] The first step is to establish a support platform model 1 in the PDMS model based on the external dimensions of the upper component located at the top of the unit. The support platform model 1 is used to support the upper component.

[0041] Most of the equipment in the turbine unit is purchased prefabricated, and the turbine foundation is designed based on the dimensions and installation locations of these prefabricated components. The main equipment in the unit can be broadly divided into upper and lower components. The upper components are located on the support platform of the turbine foundation, which is supported by support columns. The lower components are located below the support platform. The support platform and support columns constitute the main part of the turbine foundation.

[0042] In the PDMS model, a preliminary support platform model 1 is first established based on the external dimensions of the equipment in the upper component. In this embodiment, the upper component mainly includes a steam turbine and a generator. The generator needs to be driven by the steam turbine, and the turbine rotor and the generator rotor are connected through a coupling. The steam turbine and the generator are both located on the support platform. The support platform model 1 can be a cuboid platform model. The required position points for the steam turbine and generator are established along the centerline of the length direction of the support platform model 1. At these position points, steam turbine mounting slot model 8 and generator mounting slot model 9 are established. Installation structure models for other equipment can also be established.

[0043] The second step is to establish a support column model 2 based on the height of the lower component located below the upper component and the elevation of the unit's operating level. The support column model 2 is used to support the support platform model 1.

[0044] Support column model 2 includes four support columns installed on both sides along the length of support platform model 1. These support columns must avoid the lower components to be located below support platform model 1, and their height must be suitable for the unit's operation. The design of the support columns must consider the positions of the turbine's front and rear bearing housings, the generator's front and rear bearing housings, and the condenser's position. At this point, a preliminary model of the turbine foundation has been established in the PDMS model.

[0045] The third step is to build the upper component model 3 on the support platform model 1, and build the lower component model 4 on the lower part of the support platform model 1.

[0046] After the initial model of the steam turbine foundation is established, the model of the generating unit needs to be built on the model of the steam turbine foundation so that the models of the steam turbine foundation and the generating unit can be initially matched.

[0047] The upper component model 3 is built upon the support platform model 1. Each piece of equipment in the upper component model 3 is built within the corresponding installation structure model of the support platform model 1. The equipment in the lower component model 4 is arranged and installed at the lower part of the support platform model 1. The turbine model 5 and generator model 6 in the upper component model 3 are respectively installed in the turbine mounting slot model 8 and the generator mounting slot model 9. The lower component model 4 includes the condenser model 7, the turbine bearing housing model, and the generator bearing housing model, arranged between the support column models 2. Each piece of equipment is initially integrated with the turbine foundation model.

[0048] To simulate real construction and better design the turbine foundation, a model of each piece of equipment was created according to the actual installation sequence of the equipment in each model.

[0049] Thus, a preliminary model of the steam turbine foundation and the unit has been established in the PDMS model.

[0050] The fourth step is to conduct a collision test and adjust the shape and size of the support platform model 1 and the support column model 2.

[0051] To identify design flaws, a collision check was performed in the PDMS model to find the interference points between each device model and the support platform model 1 and support column model 2. The shape and size of the support platform model and support column model 2 were then adjusted until there was no interference.

[0052] To reduce the number of interference points in the overall model and prevent excessive interference points from hindering adjustments, collision checks were performed after each device model was built. If a collision point was found, the shape and dimensions of the support platform model 1 and support column model 2 were adjusted according to the collision point until the collision point disappeared. Each part of the turbine foundation was designed step by step to ensure that each piece of equipment was installed correctly.

[0053] Finally, based on the adjusted shape and dimensions of the support platform model 1 and support column model 2, the actual shape and dimensions of the turbine foundation are determined.

[0054] The absence of collision points in the PDMS model indicates that the turbine foundation model design is reasonable, and plan drawings can be generated based on the turbine foundation model for construction.

[0055] In this embodiment, the order of the first and second steps can be reversed.

[0056] To ensure the turbine foundation is properly positioned within the plant, a building model can be created in the PDMS model before establishing the support platform model. Support platform model 1 and support column model 2 are placed within the building model. The positions of support platform model 1 and support column model 2 within the building model can be adjusted as needed, and the actual position of the turbine foundation is determined based on these adjusted positions. This facilitates the rational placement of the turbine foundation within the plant.

[0057] The turbine unit also uses numerous auxiliary components, such as main steam valves, intermediate-pressure combined steam valves, main steam pipes of the turbine body, reheat pipes, extraction steam pipes, and steam sealing pipes. The turbine foundation must be rationally designed according to the arrangement of these components, leaving sufficient space for their placement. In the PDMS model, after establishing the upper and lower component models, models of each component can be further established, such as models of each steam valve (model 10) and each pipe (model 11). Then, collision checks are performed. If collision points are found, the shape and size of the support platform model (model 1) and support column model (model 2) are adjusted according to the collision points until the collision points disappear. Intuitively setting up the models of each component on the turbine foundation model is beneficial for the detailed design of the turbine foundation structure.

[0058] The turbine foundation also contains many reserved openings and embedded parts for installing equipment components. After establishing the upper and lower component models, models of reserved holes and embedded parts can be created in the support platform model 1 and support column model 2 according to the required locations of the reserved openings and embedded parts. The position points of the reserved hole and embedded part models can be adjusted as needed, and the actual positions of the reserved holes and embedded parts on the turbine foundation can be determined based on the reserved hole and embedded part models. Intuitively setting up models of reserved holes and embedded parts on the turbine foundation model is beneficial for the rational design of installation points in the turbine foundation.

[0059] The turbine foundation also involves the layout of instrument measuring points, equipment interfaces, and electrical connections. After establishing the upper and lower component models, simulated instrument measuring points, equipment interface simulation points, and electrical connection models can be created in the support platform model 1 and support column model 2. These models can be adjusted as needed, and their actual positions on the turbine foundation can be determined based on them. Intuitively setting up instrument measuring points, equipment interfaces, and electrical connections on the turbine foundation model facilitates further rational design of the turbine foundation.

[0060] This PDMS-based steam turbine foundation design method allows for the intuitive creation of models of the steam turbine foundation, unit, auxiliary components, installation components, instruments, interfaces, and electrical connections within PDMS. This facilitates multi-disciplinary collaborative design of the steam turbine foundation, realistically recreates the on-site environment of a thermal power plant steam turbine foundation, and results in high design accuracy and a high success rate in subsequent construction.

[0061] The PDMS-based steam turbine foundation design method according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the PDMS-based steam turbine foundation design method proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A steam turbine foundation design method based on PDMS, wherein the turbine unit includes an upper component and a lower component, the steam turbine foundation to be designed includes a support platform and support columns supporting the support platform, the upper component is located above the support platform, and the lower component is located below the support platform, characterized in that, Includes the following steps: A support platform model is established in the PDMS model based on the external dimensions of the upper component. The support platform model is used to support the upper component. Based on the height of the lower component and the operating level elevation of the unit, a support column model is established, which is used to support the support platform model. An upper component model is built on the support platform model, and a lower component model is built on the lower part of the support platform model. The shape and size of the support platform model and the support column model are adjusted through collision testing; Based on the adjusted shape and dimensions of the support platform model and the support column model, the actual shape and dimensions of the turbine foundation are determined.

2. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, Before establishing the aforementioned support platform model, the following is also included: A house model is created to place the support platform model and the support column model. The position points of the support platform model and the support column model in the house model are adjusted. The actual position of the turbine foundation is determined based on the adjusted position points.

3. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, The upper component model includes a steam turbine model and a generator model, and the lower component model includes a condenser model, a steam turbine bearing housing model, and a generator bearing housing model. The model of each device is established according to the actual installation sequence of the equipment in each model.

4. The steam turbine foundation design method based on PDMS as described in claim 3, characterized in that, Before establishing the turbine model and the generator model, a turbine mounting slot model and a generator mounting slot model are opened on the upper part of the support platform model.

5. The steam turbine foundation design method based on PDMS as described in claim 3, characterized in that, After the model of each device is created, a collision test is performed. If a collision point is found, the shape and size of the support platform model and the support column model are adjusted according to the collision point until the collision point disappears.

6. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, After establishing the upper component model and the lower component model, the following is also included: Establish models for each steam valve and conduct collision tests. If a collision point is found, adjust the shape and size of the support platform model and the support column model according to the collision point until the collision point disappears.

7. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, After establishing the upper component model and the lower component model, the following is also included: Establish models for each pipeline and conduct collision checks. If a collision point is found, adjust the shape and size of the support platform model and the support column model according to the collision point until the collision point disappears.

8. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, After establishing the upper component model and the lower component model, the following is also included: Pre-reserved hole models and embedded part models are established on both the support platform model and the support column model. The actual positions of the pre-reserved holes and embedded parts are determined based on the pre-reserved hole models and the embedded part models.

9. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, After establishing the upper component model and the lower component model, the following is also included: Establish instrument measurement point simulation points, equipment interface simulation points, and electrical connection models. Based on the instrument measurement point simulation points, equipment interface simulation points, and electrical connection models, determine the positions of the instrument measurement points, equipment interfaces, and electrical connections on the turbine foundation.

10. The steam turbine foundation design method based on PDMS as described in claim 1, characterized in that, The support platform model includes a cuboid platform model, and the support column model includes eight support columns disposed below the support platform model.

Images