Three-dimensional design method and system for water turbine pipeline of hydropower station, electronic equipment and storage medium

Abstract

The invention discloses a three-dimensional design method for a water turbine pipeline of a hydropower station. The method comprises the steps that a pipeline object database and a pipeline object parameterized three-dimensional model are constructed; according to the port information of the parameterized three-dimensional model of the pipeline object and the pipeline design flow direction, the connection logic of the pipeline object is designed; designing an arrangement method of the pipeline objects according to the connection logic of the pipeline objects, and completing preliminary design of a water machine pipeline network according to the arrangement method of the pipeline objects; and adjusting specification parameters and paths of the pipeline objects of the water machine pipeline network according to the connection logic of the pipeline objects and actual hydropower station building structure adjustment changes. According to the technical scheme, the accuracy and efficiency of water machine pipeline design are improved, and powerful technical support is provided for construction and maintenance of a hydropower station.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional design of hydropower stations, and in particular to a three-dimensional design method and system for hydraulic pipelines of hydropower stations, electronic equipment and storage media. The technical method is applicable to the three-dimensional design of hydraulic pipelines of hydropower stations. Background Art

[0002] The three-dimensional design of the water machine pipeline of a hydropower station is a technically complex field with extremely high precision requirements. During the pipeline design process, the nominal diameter, pressure level, type and material of the pipeline object must be comprehensively considered to ensure the efficient and stable operation of the entire hydropower station system. At present, when designing the water machine pipeline of a hydropower station, designers need to spend a lot of time planning the pipeline route on the building structure model, considering the connection logic of different water machine pipeline equipment, and arranging water machine pipeline equipment such as pipe fittings, valves, and instruments on the pipeline route. After the design is completed, it is also necessary to perform collision detection with other disciplines, and the design needs to be repeatedly adjusted and optimized. When the internal structure of the building is complex, it will seriously affect the design efficiency and the accuracy of the layout. After the layout is completed, it is not easy to verify the layout standardization, and it is not conducive to later adjustments. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the present invention proposes a three-dimensional design method and system for water turbine pipelines in a hydropower station. It builds a database of various pipeline objects, parametrically generates three-dimensional models of pipeline objects such as steel pipes, pipe fittings, valves, etc. according to their size specifications, and provides a method for designing and generating pipeline objects and an adjustment plan to improve the efficiency of water turbine pipeline modeling by designers.

[0004] The three-dimensional design method and system of the hydraulic pipeline of a hydropower station of the present invention comprises:

[0005] Constructing a pipeline object database, wherein the pipeline object database includes basic modeling specification parameters and material information of pipeline objects;

[0006] Constructing a parameterized three-dimensional model of a pipeline object according to a pipeline object database, wherein the parameterized three-dimensional model of the pipeline object includes a three-dimensional model body and port information;

[0007] Design the connection logic of the pipeline object according to the port information of the parametric 3D model of the pipeline object and the pipeline design flow direction;

[0008] Design the layout method of pipeline objects according to the connection logic of pipeline objects, and complete the preliminary design of water machine pipeline network according to the pipeline object layout method;

[0009] According to the connection logic of the pipeline object and the actual changes in the building structure of the hydropower station, the specification parameters and paths of the pipeline objects in the water machine pipeline network are adjusted.

[0010] Preferably, the construction of the pipeline object parametric three-dimensional model based on the pipeline object database includes parametric modeling of steel pipe pipeline objects, parametric modeling of pipe fitting pipeline objects, and parametric modeling of valve objects.

[0011] Preferably, the connection logic of the designed pipeline object includes pipeline turning design, pipeline connection design and pipeline branching design.

[0012] Preferably, the method for designing the arrangement of pipeline objects according to the connection logic of the pipeline objects comprises:

[0013] Design individual layout methods for pipeline objects, including port layout or insertion layout based on the layout points of pipe fittings on the steel pipe;

[0014] Design a batch layout method for pipeline objects, plan the pipeline network path according to the actual hydropower station building structure, and arrange pipeline objects freely or along the pipeline network path.

[0015] Preferably, the path adjustment of the pipeline object includes local and batch adjustment of the position direction of the pipe fitting pipeline object on the steel pipe pipeline object, and modification of the position direction of the steel pipe pipeline object and the length of the steel pipe.

[0016] The beneficial effects of the present invention are as follows:

[0017] The three-dimensional design method for water turbine pipelines of a hydropower station in an embodiment of the present invention is a brand-new three-dimensional design method for water turbine pipelines of a hydropower station. The technical solution of the present invention can be used to quickly create a parameterized model of pipeline objects by constructing a pipeline object database and using the basic modeling parameters in the database. These models and parameters all meet the requirements of national standards and specifications. The layout and connection logic of pipeline objects are summarized in combination with actual design scenarios, and a method for quickly designing water turbine pipelines of a hydropower station is proposed, which reduces the process of manual design of water turbine pipeline modeling and adjustment. Through the technical solution of the present invention, the accuracy and efficiency of water turbine pipeline design are improved, providing strong technical support for the construction and maintenance of hydropower stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flow chart of a three-dimensional design method for a hydraulic pipeline of a hydropower station according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram showing the comparison of pipe diameters of water turbine pipes in a hydropower station according to an embodiment of the present invention;

[0020] Figure 3 A schematic diagram showing the calculation and comparison of the pipe wall thickness of a water machine pipe in a hydropower station according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a steel pipe database of a water turbine pipeline of a hydropower station according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a pipe fitting database of a water machine pipeline of a hydropower station according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of parametric modeling of a water machine pipeline object in a hydropower station according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of parametric modeling of a pipe fitting with a different diameter for a hydraulic pipeline of a hydropower station according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of parametric modeling of a spur gear gate valve of a water turbine pipeline of a hydropower station according to an embodiment of the present invention;

[0026] Fig. 9 This is a schematic diagram of the steel pipe connection logic of the water machine pipeline of the hydropower station according to an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of the arrangement of a single pipeline object of a water machine pipeline of a hydropower station according to an embodiment of the present invention;

[0028] Fig.11 This is a schematic diagram of batch arrangement of water machine pipeline objects in a hydropower station according to an embodiment of the present invention;

[0029] Fig.12 This is a schematic diagram of the specification adjustment of the water machine pipeline object of the hydropower station according to the embodiment of the present invention;

[0030] Fig.13 It is a schematic diagram of local adjustment of a water machine pipeline object in a hydropower station according to an embodiment of the present invention;

[0031] Fig.14 This is a schematic diagram of batch adjustment of water machine pipeline objects in a hydropower station according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0033] The embodiment of the present invention realizes pipeline object database construction, three-dimensional model parameterization generation, pipeline design and pipeline adjustment based on Microstation software.

[0034] Example 1

[0035] The following is a specific example to further illustrate how the three-dimensional design method for hydraulic pipelines of a hydropower station of the present invention is implemented.

[0036] Step S1: constructing a pipeline object database and a parametric three-dimensional model;

[0037] S101: Construct a pipeline object database. According to the water machine pipeline standard specification, construct a pipeline object database, which contains basic modeling specification parameters and material information of pipeline objects, and is used for later pipeline object parametric modeling and material statistics.

[0038] The basic modeling specification parameter information of the pipeline object includes nominal diameter, type, pressure level, etc. Among them:

[0039] The nominal diameter is a standardized size series for water pipes, ranging from DN6 to DN2500. The numerical part represents a round integer for reference in the water pipe, and does not represent the actual outer diameter of the water pipe.

[0040] Type is the unit type for measuring the outer diameter of the water machine pipe, which is divided into metric millimeters and imperial inches. The outer diameter of the pipe is uniquely matched according to the nominal diameter and type. Figure 2 As shown in the figure, the outer diameter of series I is in English units, and the outer diameter of series II is in metric units. For example, when the nominal diameter is DN32, the outer diameter of series I pipe is 42.4mm, and the outer diameter of series II pipe is 38mm. The outer diameter of series I has been converted from inches to millimeters for the convenience of calculation.

[0041] The pressure grade is the maximum water pressure grade that the water machine pipeline can withstand, ranging from PN10 to PN160. For example, PN10 means that the maximum water pressure that the current water machine pipeline can withstand is 1.0MPa, and PN63 means that the maximum water pressure that the current water machine pipeline can withstand is 6.3MPa.

[0042] The material information of the pipeline object includes wall thickness, material, connection method, etc. Among them:

[0043] Wall thickness is the physical thickness of the water machine pipe wall;

[0044] The material can be divided into carbon steel, stainless steel, etc.

[0045] The connection methods can be divided into butt welding seamless, internal thread and socket welding.

[0046] The wall thickness of the pipe object is related to the nominal diameter, pressure level, and material of the pipe. It is generally calculated by the formula The calculation results show that: S represents the pipe wall thickness in millimeters; P is the pressure level in MPa; D is the outer diameter of the pipe in millimeters; σ is the allowable stress of the pipe at the working temperature in MPa; η is the longitudinal weld coefficient of the pipe, for seamless steel pipes η=1, for welded steel pipes η=0.8; C is the additional value of the pipe wall thickness deviation. According to the specification, the negative deviation of low-pressure fluid transport welded steel pipes is -10%, the negative deviation of stainless steel welded steel pipes is -10%, and the negative deviation of seamless steel pipes is -15%. If the current pipeline is a low-pressure fluid transport welded steel pipe, the deviation value C=0.1D; a is the corrosion allowance, for stainless steel pipes, a=1.0mm, and for non-stainless steel pipes, a=1.5mm.

[0047] Figure 3 The wall thickness of the metric outer diameter series pipes is calculated, where the wall thickness calculation value S matches the above formula. The wall thickness value will add a certain margin based on the calculated value to improve its pressure resistance. The margin varies according to the actual engineering design.

[0048] According to the above specification parameter information, the nominal diameter, type, and pressure level are arranged and combined to preliminarily determine the specification range of the water machine pipeline, and further divided according to the characteristics of different pipeline objects. For example:

[0049] Steel pipes can be divided into four types according to material type and manufacturing process: welded steel pipes for low-pressure fluid transportation, seamless steel pipes for fluid transportation, stainless steel welded steel pipes for fluid transportation, and stainless steel seamless steel pipes for fluid transportation. The steel pipe part database generated after arrangement is as follows Figure 4 shown.

[0050] Pipe fittings can be divided into three connection modes: seamless butt welding, internal thread and socket welding according to the working pressure, temperature and medium characteristics of the pipeline environment. The pipe fittings database generated after arrangement is as follows: Figure 5 As shown, Figure 5 The upper side is the database of the elbow part, and the lower side is the database of the branch part.

[0051] The above information belongs to the terms commonly used in the professional design process. Figure 3 , Figure 4 and Figure 5 The partial contents used in this embodiment are listed, but not all the water machine pipeline information is listed. The pipeline object may also include other items such as instruments.

[0052] S102: Construct a parametric three-dimensional model of the pipeline object according to the pipeline object database. The water machine pipeline objects include steel pipes, pipe fittings, valves and other types. The parametric three-dimensional model of the pipeline objects such as steel pipes, pipe fittings, valves, etc. includes the parametric three-dimensional model body of the pipeline object and port information, wherein the three-dimensional model body is the geometric representation of the pipeline object, and the port information is the interface connecting the current pipeline object with other pipeline objects, including the port coordinates, docking direction and connection method in the local coordinate system.

[0053] S1021: Construct parametric modeling of steel pipe objects. The basic modeling parameters of steel pipes include outer diameter, length, and wall thickness. According to the material type, they are divided into welded steel pipes for low-pressure fluid transportation, seamless steel pipes for fluid transportation, stainless steel welded steel pipes for fluid transportation, and stainless steel seamless steel pipes for fluid transportation. The inner diameter of the steel pipe is calculated by the difference between the outer diameter and the wall thickness.

[0054] This embodiment uses Figure 4 The steel pipe named as welded steel pipe for low-pressure fluid transportation, with a nominal diameter of DN10, a pressure level of PN10, a type of I, and a material of carbon steel is used as an example to create a parametric model of the steel pipe pipeline object. According to the selected steel pipe data, the outer diameter of the steel pipe is determined to be 14mm, the wall thickness is 2.5mm, the inner diameter of the steel pipe is calculated to be 11.5mm, and the length of the steel pipe is set to 200mm. The steel pipe model is generated through the above modeling basic information. Figure 6 As shown in (a) welded steel pipe for low-pressure fluid transportation, serial numbers 1 and 2 in the figure represent ports 1 and 2 of the steel pipe. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (200mm, 0mm, 0mm). The port connection method of the steel pipe is not limited and automatically matches the connected pipe fittings. The connecting line between port 1 and port 2 is the pipe axis of the steel pipe.

[0055] S1022: Construct parametric modeling of pipe fittings and pipeline objects. Pipe fittings can be divided into elbows, tees, crosses, threaded connectors, joints, flanges, etc., and are divided into three connection methods according to the connection method: butt-welded seamless, internal threaded, and socket-welded. Among them, butt-welded seamless pipe fittings achieve seamless connection between pipe fittings and pipelines through high-temperature butt welding, which is suitable for high-pressure and high-temperature environments; internal threaded pipe fittings achieve connection between pipelines and pipe fittings through internal threads, which is suitable for small-diameter pipeline systems and occasions that require frequent maintenance or replacement; socket-welded pipe fittings achieve pipeline connection through sockets and welding, which is suitable for a variety of installation environments. Different modeling strategies are adopted according to different connection methods. The parametric modeling of elbows in pipe fittings is the most representative. This embodiment takes the 90° elbow as an example to illustrate the modeling process of pipe fittings and pipeline objects with different connection methods.

[0056] The basic modeling parameters of the 90° elbow include the outer diameter, port to center length, insertion depth, and outer diameter of the main pipe end. The outer diameter is the outermost diameter of the elbow pipe; the port to center is the straight-line distance from the port of the elbow to the center point of its curved part, that is, the radius of curvature of the elbow, where the radius of curvature of the long radius elbow is usually 1.5 times the outer diameter of the pipe, and the radius of curvature of the short radius elbow is usually 1 times the outer diameter of the pipe; the insertion depth and the outer diameter of the main pipe end are unique parameters for internal threaded or socket welded pipe fittings. The insertion depth indicates the depth of the inserted pipe fitting into another pipe fitting, and the outer diameter of the main pipe end is the outer diameter of the pipe where the pipe fitting is inserted, to ensure the continuity and sealing of the pipeline system.

[0057] The basic modeling parameters of the 90° seamless butt-welded elbow include the outer diameter and the length from the port to the center. Figure 5 In the example of the pipe fitting named 90° butt-welded seamless short radius elbow, with a nominal diameter of DN25, a pressure level of PN10, and a type I, a parametric model of the elbow pipe object is created. According to the selected elbow data, the outer diameter of the elbow is determined to be 33.7mm, and the length from the port to the center is 25mm. The elbow model generated by the above modeling basic information is as follows Figure 6 (b) shows a 90° butt-welded seamless short radius elbow. Figure 6 In (b), serial number 0 represents the center point of the butt-welded seamless elbow, and its local coordinates are (25mm, 0mm, 0mm). Serial numbers 1 and 2 represent ports 1 and 2 of the 90° butt-welded seamless elbow. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (25mm, 25mm, 0mm). Both ports are connected by butt-welded seamless connection.

[0058] The basic modeling parameters of the 90° internal thread elbow include the outer diameter, the port to center length, the insertion depth and the outer diameter of the main pipe end. Figure 5 In the example of the pipe fitting named 90° internal thread elbow, with a nominal diameter of DN25, a pressure level of PN63, and a type of I, a parametric model of the elbow pipe object is created. According to the selected data, the outer diameter of the 90° internal thread elbow is 33.7mm, the length from the port to the center is 38.5mm, the insertion depth is 14.7mm, and the outer diameter of the main pipe end is 46mm. The elbow model is generated through the above modeling basic information. Figure 6 As shown in (c) of the figure, the 90° internal thread elbow. Figure 6 In (c), serial number 0 represents the center point of the butt-welded seamless elbow, and its local coordinates are (28.3mm, 0mm, 0mm). Serial numbers 1 and 2 represent ports 1 and 2 of the 90° internal thread elbow. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (28.3mm, 28.3mm, 0mm). Both ports are connected by internal threads.

[0059] The basic modeling parameters of the 90° socket weld elbow include the outer diameter, the port to center length, the insertion depth and the outer diameter of the main pipe end. Figure 5 Take the pipe fitting named 90° socket weld elbow, with a nominal diameter of DN25, a pressure level of PN10, and a type I as an example to create a parametric model of the elbow pipe object. According to the selected data, the outer diameter of the 90° socket weld elbow is 33.7mm, the length from the port to the center is 35mm, the insertion depth is 12.5mm, and the outer diameter of the main pipe end is 45.7mm. The elbow model is generated through the above modeling basic information. Figure 6 The 90° socket weld elbow is shown in (d). Figure 6 In (d), serial number 0 represents the center point of the butt-welded seamless elbow, and its local coordinates are (22.5mm, 0mm, 0mm). Serial numbers 1 and 2 represent ports 1 and 2 of the 90° socket-welded elbow. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (22.5mm, 22.5mm, 0mm). Both ports are connected by socket welding.

[0060] The parametric modeling process of other angle elbows, tees, crosses, threaded connectors, joints and other pipe fittings is similar to that of 90° elbows. The main difference lies in their respective geometric structures and connection methods. For example, the bending angle of other angle elbows ranges from 0° to 90°; a tee has three ports, one of which is the main port and the other two are branch ports, which are used to divert the fluid to two different directions; a cross has four ports, one of which is the main port and the other three are branch ports, which are used to divert the fluid to three different directions and are usually used as the central node of the pipeline system. Threaded connectors have two ports, which connect two steel pipes through internal and external threads; joints have one or two ports, which are used to connect two pipes or as transition pieces for connecting pipes to other equipment; flanges are generally generated in pairs, each with one port, which are used to connect pipes, valves and other equipment.

[0061] The above pipeline objects are all equal-diameter pipe fittings. In addition to equal-diameter pipe fittings, reducing pipe fittings are also an indispensable component in pipeline design. The difference between them and equal-diameter pipe fittings is that the nominal diameters of the ports of equal-diameter pipe fittings are consistent, while the nominal diameters of the ports of reducing pipe fittings vary. This example takes a different-diameter straight pipe as an example to illustrate the modeling process of a reducing pipe fitting pipeline object.

[0062] The basic modeling parameters of the reducing straight pipe include the outer diameter of the main pipe, the outer diameter of the branch pipe, and the pipe length. The characteristic of the concentric reducing pipe is that the centers of the pipe openings at both ends are on the same axis, while the centers of the pipe openings at both ends of the eccentric reducing pipe are not on the same axis. Figure 7In (a), the name is butt-welded seamless concentric reducer, the nominal diameter of the main pipe is DN25, the nominal diameter of the branch pipe is DN15, the pressure level is PN10, and the type is I pipe fitting. Create a parametric model of the different-diameter straight pipe pipeline object. According to the selected different-diameter straight pipe data, the outer diameter of the different-diameter straight pipe main pipe is 33.7mm, the outer diameter of the branch pipe is 21.3mm, and the pipe length is 51mm. The different-diameter straight pipe model generated by the above modeling basic information is as follows Figure 7 As shown in (b) in the butt-welded seamless concentric reducer. Figure 7 In (b), serial numbers 1 and 2 represent ports 1 and 2 of the butt-welded seamless concentric reducer. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (51mm, 0mm, 0mm). Both ports are butt-welded seamless. The modeling parameters of the butt-welded seamless eccentric reducer are the same as those of the butt-welded seamless concentric reducer. The difference is that the centers of the two ends of the pipe are not on the same axis. The data specification selection will not be repeated. The parameterized model is as follows: Figure 7 As shown in (c) above, the welded seamless eccentric reducer. Figure 7 In (c), serial numbers 1 and 2 represent port 1 and port 2 of the butt-welded seamless eccentric reducer. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (51mm, 6.2mm, 0mm). Both ports are connected by butt-welded seamless connection.

[0063] S1023: Construct valve object parametric modeling.

[0064] Valves are key devices for controlling fluid direction, pressure, and flow, and are mainly composed of a valve body and an operating mechanism. The valve body is the basic part of the valve, usually referring to the outer shell of the valve, which contains the fluid channel; the operating mechanism is a mechanical device used to drive the valve to open and close, and is generally divided into manual, electric, pneumatic, hydraulic, electro-hydraulic, gas-liquid and other types. The valve designs of different manufacturers are different, but the overall structure is basically the same, so the parametric modeling of the valve pipeline object only needs to retain the main features of the valve. The basic modeling parameters of the valve include valve body length, valve body width, valve body height, and operating mechanism characteristic parameters. This embodiment takes the spur gear gate valve as an example to illustrate the modeling process of the valve object.

[0065] The basic modeling parameters of the spur gear gate valve include valve body length, valve body width, valve body height, and operating mechanism characteristic parameters. The operating mechanism of the gate valve is a spur gear, and its characteristic parameter is the hand wheel width. Figure 8In (a), the valve named gate valve, with a nominal diameter of DN50 and a pressure level of PN10 is used as an example to create a parametric model of a spur gear gate valve object. According to the selected valve data, the valve body length is 250mm, the valve body width is 250mm, the valve body height is 358mm, and the handwheel width is 240mm. In addition to the above basic parameters, the detailed modeling parameters of other valves are all referenced to the actual manufacturer's valve model. The top view and side view of the spur gear gate valve model generated by the above basic modeling information are as follows: Figure 8 (b) and Figure 8 As shown in (c), serial numbers 1 and 2 in the figure represent ports 1 and 2 of the spur gear gate valve. The local coordinates of port 1 are (0mm, 0mm, 0mm), and the local coordinates of port 2 are (250mm, 0mm, 0mm). The connection method of the two ports is flange connection.

[0066] S2. Design the connection logic of the pipeline object. According to the parametric three-dimensional model of the pipeline object constructed in step S1, design the connection logic of the pipeline object.

[0067] In the 3D design of the water machine pipeline, the steel pipe is the main part of the pipeline system. According to the designed flow direction, pipe fittings are used to achieve turning, connection and branching. According to the port information of the parametric 3D model of the pipeline object in step S1 and the designed flow direction of the pipeline, the connection logic of the pipeline is designed.

[0068] In this embodiment, a welded steel pipe for low-pressure fluid transportation with a nominal diameter of DN25, a pressure level of PN10, and a type of I is selected as the main part of the pipeline system, and pipe fittings with a nominal diameter, pressure level, and type matching the welded steel pipe for low-pressure fluid transportation and a connection method of butt welding seamless are selected, including elbows, tees, crosses, flanges, etc.

[0069] S201: Pipeline steering design

[0070] Starting from port 1 of the welded steel pipe for low-pressure fluid transportation, if the pipeline needs to turn, calculate the angle of the pipeline turning. When the turning angle is greater than 0° and less than or equal to 90°, it is necessary to generate an elbow at port 2 of the steel pipe, and the port 1 or port 2 of the elbow is connected and aligned with the port 2 of the steel pipe. In this embodiment, according to step S1, a parametric three-dimensional model of a 90° butt-welded seamless short radius elbow with a nominal diameter of DN25, a pressure level of PN10, a type of I, and a radius type of short radius is selected. The subsequent parameterized three-dimensional model acquisition method follows the process of step S1 and will not be repeated here. Connect and align port 1 of the elbow with port 2 of the steel pipe to realize the turning of the steel pipe with a 90° elbow, such as Fig. 9 As shown in (a1) in . Similarly, Fig. 9 As shown in Figure (a2) in the figure, the steel pipe is turned using a 45° elbow in the same way.

[0071] S202: Pipeline connection design

[0072] Starting from port 1 of the welded steel pipe for low-pressure fluid transportation, if the pipeline needs to be connected by a connection type pipe fitting, it is necessary to generate a connection pipe fitting at port 2 of the steel pipe, and continue to generate a steel pipe at the unconnected port of the connection pipe fitting. In this embodiment, a parametric three-dimensional model of a flange pipe fitting with a nominal diameter of DN25, a pressure level of PN10, and a type I is selected. Usually, flanges are generated in pairs to ensure the accuracy and sealing of the pipeline connection. The port 1 of the flange pair is connected and aligned with the port 2 of the steel pipe, and then a new steel pipe is generated from the port 2 of the flange pair to realize the connection of the steel pipe through the flange, such as Fig. 9 Similarly, the steel pipes are connected by welding straight pipe joints in the same way, as shown in (b1) in FIG. Fig. 9 As shown in (b2) in .

[0073] S203: Pipeline branch design

[0074] Starting from port 1 of the welded steel pipe for low-pressure fluid transportation, if the pipeline needs to branch, a connecting branch pipe fitting needs to be generated at port 2 of the steel pipe. In this embodiment, a parametric 3D model of a tee pipe fitting with a nominal diameter of DN25, a pressure level of PN10, and a type of I is selected, and port 1 of the tee is aligned with port 2 of the steel pipe to realize the branching of the steel pipe through the tee. Fig. 9 Similarly, the steel pipe is realized through the four-way branch in the same way as shown in (c1) in FIG. Fig. 9 As shown in (c2) in .

[0075] If the connection method is internal thread or socket welding pipe fittings, the process of turning, connecting and branching the pipeline is basically the same as that of butt welding seamless pipe fittings. The difference is that the steel pipe needs to be inserted into the internal thread or socket welding pipe fittings. The port of the internal thread or socket welding pipe fitting has been designed inside in step S1, and it can be directly connected and aligned with the port. Fig. 9 B in the figure is a schematic diagram of the connection between a steel pipe and an internally threaded or socket-welded pipe fitting: Fig. 9 (a3) and Fig. 9 (a4) is a pipeline diversion design, where the steel pipe is diverted through 90° elbows and 45° elbows respectively, where the elbows include both internal thread type and socket welding type; Fig. 9 (b3) and Fig. 9 (b4) is a pipeline connection design, where the steel pipes are connected by external joints and concentric double-screw pipe clamps, respectively, where the external joints and concentric double-screw pipe clamps only include internal thread types; Fig. 9 (c3) and Fig. 9(c4) is a pipeline branch design, where the steel pipe is branched through tees and crosses, where the tees and crosses include both internal thread type and socket welding type.

[0076] S3: Designing a layout method of pipeline objects according to the connection logic of pipeline objects. Designing a single or batch layout method of pipeline object components according to the connection logic of pipeline objects in step S2 to complete the preliminary design of the water machine pipeline network.

[0077] S301: Design a single layout method for a pipeline object. The layout of a single pipeline object is divided into port layout and insertion layout according to the layout points of the pipe fittings on the steel pipe.

[0078] (1) Port layout: Select any port of the steel pipe, select any pipe fitting pipeline object parametric 3D model that matches the current steel pipe nominal diameter, type, and pressure grade, align any port of the pipe fitting with the connection of the steel pipe, and some pipe fittings need to be rotated around the axis of the steel pipe.

[0079] In this embodiment, a welded steel pipe for low-pressure fluid transportation with a nominal diameter of DN25, a pressure level of PN10, and a type I is selected. Starting from the coordinate point (0mm, 0mm, 0mm), a welded steel pipe for low-pressure fluid transportation with a length of 500mm is placed along the positive direction of X, and a 90° butt-welded seamless short-radius elbow pipeline object model of the same specification is constructed. The coordinates of port 2 of the steel pipe are (500mm, 0mm, 0mm). The port 1 of the elbow is connected and aligned with the port 2 of the steel pipe. At this time, the coordinates of the port 1 of the elbow are (500mm, 0mm, 0mm). The elbow model is rotated around the axis of the steel pipe to rotate the port 2 of the elbow. If the rotation angle is 0°, the coordinates of the port 2 of the elbow are (528.3mm, 28.3mm, 0mm). If the rotation angle is 180°, the coordinates of the port 2 of the elbow are (528.3mm, -28.3mm, 0mm). Fig.10 The A elbow port arrangement is shown as a1 and a2.

[0080] (2) Insertion layout: Select any position between the two ports of the steel pipe as the insertion point, select any pipe fitting pipeline object parametric 3D model that matches the current steel pipe nominal diameter, type, and pressure grade, connect and align the main port of the pipe fitting with the insertion point of the steel pipe. Some pipe fittings need to be rotated around the axis of the steel pipe.

[0081] In this embodiment, a low-pressure fluid transport welded steel pipe with a nominal diameter of DN25, a pressure level of PN10, and a type I is selected. Starting from the coordinate point (0mm, 0mm, 0mm), a low-pressure fluid transport welded steel pipe with a length of 500mm is placed along the positive direction of X to construct a butt-welded seamless equal-diameter tee pipe object model of the same specification. The coordinates of port 2 of the steel pipe are (500mm, 0mm, 0mm), and the insertion point is set to (250mm, 0mm, 0mm). In order to align the port 1 of the tee with the insertion point of the steel pipe, the coordinates of port 1 of the tee are (250mm, 0mm, 0mm), and the coordinates of port 2 are (326mm, 0mm, 0mm). Rotate the tee model around the axis of the steel pipe to rotate port 3 of the tee. If the rotation angle is 0°, the coordinates of port 3 of the tee are (288mm, 38mm, 0mm). If the rotation angle is 180°, the coordinates of port 2 of the elbow are (288mm, -38mm, 0mm). Fig.10 The B tee is inserted into the arrangement b1 and b2 as shown.

[0082] S302: Design a batch layout method for pipeline objects. Set pipeline object specifications, such as nominal diameter, type, pressure level, steel pipe type, connection method, elbow radius type specification and other parameters, and perform batch layout of pipeline objects. According to the actual design scenario, that is, the pipeline network path planned by the hydropower station building structure, the pipeline objects are freely or along the pipeline network path.

[0083] (1) Free layout: According to the set pipe object specification parameters, pipe objects can be freely placed in three-dimensional space in the form of polylines, without being restricted by fixed paths, and corresponding pipe connectors are automatically generated at the corners or intersections of the pipelines. The connectors are conventional elbows, tees, and crosses.

[0084] This embodiment selects a pipe object with a nominal diameter of DN25, a pressure level of PN10, and a type of I, where the steel pipe is a welded steel pipe for low-pressure fluid transportation, the pipe connection method is butt welding seamless, and the elbow radius type is short radius. According to the connection logic of step S2, if the pipeline turns, an elbow is generated at the corner, and if the pipeline crosses, a tee or a cross is generated at the intersection. Fig.11 As shown, three steel pipes A, B, and C are drawn in three-dimensional space, where:

[0085] The coordinates of port 1 and port 2 of steel pipe A are (0mm, 300mm, 0mm) and (500mm, 300mm, 0mm), respectively; the coordinates of port 1 and port 2 of steel pipe B are (0mm, 150mm, 0mm) and (1000mm, 150mm, 0mm), respectively; the coordinates of port 1 and port 2 of steel pipe C are (0mm, 0mm, 0mm) and (1000mm, 0mm, 0mm), respectively. Fig.11 As shown in (a) in .

[0086] Starting from port 2 of steel pipe A toward the negative direction of Y axis, the pipeline turns with a turning angle of 90°, and a 90° butt-welded seamless short radius elbow is constructed; it continues to extend along the negative direction of Y axis, intersects with steel pipe B and passes through steel pipe B, and a butt-welded seamless equal-diameter cross is constructed at the intersection, intersects with steel pipe C but does not pass through steel pipe C, and a butt-welded seamless equal-diameter tee is constructed at the intersection, such as Fig.11 As shown in (b) in .

[0087] (2) Along-line layout: According to the set pipeline object specification parameters, pipeline objects are placed along the specified line in the three-dimensional space, and corresponding pipeline connectors are automatically generated at the intersection of the lines. The logic of pipeline generation along the line is basically the same as that of free layout, except that the route for placing the pipeline is planned in advance, which will not be elaborated here.

[0088] S4. According to the connection logic of the pipeline object and the actual changes in the building structure of the hydropower station, the specification parameters and paths of the pipeline objects in the water machine pipeline network are adjusted.

[0089] S401: Adjustment of pipe object specification parameters. Adjustment of pipe object specification parameters such as nominal diameter, type, pressure level, steel pipe type, connection method, and elbow radius type.

[0090] The adjustment of pipeline object specification parameters is generally divided into adjustment without change and adjustment with change of the pipeline object 3D model. Among them, the modification of pipeline object pressure level and steel pipe type will not change the pipeline object 3D model. The original pipeline object 3D model will be directly replaced with the pipeline object 3D model based on the new pressure level and steel pipe type. If the nominal diameter, type, connection method, elbow radius type of the pipeline object is modified, the port coordinates of the pipe fitting pipeline object will change. In order to ensure the sealing and continuity of the pipeline, the port position of the steel pipe around the pipe fitting needs to be adjusted.

[0091] In this embodiment, according to the three-dimensional model of the water machine designed in step S302, the nominal diameter of the pipeline object is modified from DN25 to DN32. After the modification, the outer diameter of all pipeline objects is converted from 33.7mm to 42.4mm, wherein the center point coordinates of the pipe fittings remain unchanged, and the port-to-center length of each pipe fitting changes, such as the 90° butt-welded seamless short radius elbow port 1 is converted from (500mm, 300mm, 0) to (490mm, 300mm, 0). Fig.12As shown in (a) in the figure. Before modification, the adjacent port of elbow port 1 is port 2 of steel pipe A. At this time, the length of steel pipe A is modified, port 1 remains unchanged, and the coordinates of port 2 are modified to (490mm, 300mm, 0) to ensure that the port of steel pipe A is connected and aligned with port 1 of the elbow. In the same way, the ports of other pipe fittings are realigned with the adjacent steel pipe ports to complete the modification of the nominal diameter of the pipe object. Fig.12 If you modify the pipe object type, connection method, elbow radius type, the modification method is basically the same as the modification of the pipe object nominal diameter, so it will not be described here.

[0092] S402: Pipeline object path adjustment: Locally and batchly adjust the position and direction of the pipe fittings on the steel pipe object, and modify the position and direction of the steel pipe object and the length of the steel pipe.

[0093] S4021: Local adjustment of pipe objects is used to adjust a single pipe object and port-related pipe objects, which is divided into steel pipe adjustment and pipe fitting adjustment. Steel pipe adjustment is the position, direction, and length adjustment of a single steel pipe in three-dimensional space. Fig.13 shown.

[0094] In this embodiment, a low-pressure fluid transport welded steel pipe with a nominal diameter of DN25, a pressure level of PN10, and a type I is selected. A steel pipe model with a length of 1000 mm is placed, and the coordinates of the steel pipe port 1 are (0mm, 0mm, 0mm), and the coordinates of the port 2 are (1000mm, 0mm, 0mm). The steel pipe is offset 400mm in the positive Y direction as a whole. After the position is adjusted, the coordinates of the steel pipe port 1 are (0mm, 400mm, 0mm), and the coordinates of the port 2 are (1000mm, 400mm, 0mm), so as to realize the position adjustment of the steel pipe. Fig.13 As shown in (a) in .

[0095] Restore the steel pipe and rotate port 1 45° in the XOY plane. After the direction is adjusted, the coordinates of port 1 are (0mm, 0mm, 0mm) and the coordinates of port 2 are (707mm, 707mm, 0mm). The direction of the steel pipe is adjusted. Fig.13 As shown in (b) in .

[0096] Restore the steel pipe, keep port 1 unchanged, and adjust the length of the steel pipe to 500mm. After the length is adjusted, the coordinates of port 1 are (0mm, 0mm, 0mm), and the coordinates of port 2 are (500mm, 0mm, 0mm), so as to achieve the length adjustment of the steel pipe. Fig.13 As shown in (c) in .

[0097] Restore the steel pipe, select a butt-welded seamless equal-diameter tee with a nominal diameter of DN25, a pressure level of PN10, a type of I, and a connection type of butt-welded seamless, insert a tee at the coordinates (500mm, 0mm, 0mm) as the initial state of the tee pipe fitting according to step S301, move the tee to the positive X direction by 200mm, and after the movement, the coordinates of port 1 of the tee are converted from (500mm, 0mm, 0mm) to (700mm, 0mm, 0mm), and then adjust the adjacent steel pipes of port 1 and port 2 of the tee to align them with port 1 and port 2 of the tee, respectively, to achieve the position adjustment of the tee pipe fitting, such as Fig.13 As shown in (d) in .

[0098] Restore the tee, rotate the tee model around the axis of the steel pipe, and rotate the tee port 3 180°. After the direction is adjusted, the coordinates of the tee port 3 are converted from (538mm, 38mm, 0mm) to (538mm, -38mm, 0mm), realizing the direction adjustment of the tee pipe fitting. The local adjustments of other elbows and cross pipe fittings are basically the same as the tee, so they will not be described here. Fig.13 As shown in (e) in .

[0099] S4022: Batch adjustment of pipeline objects is used to adjust multiple pipeline objects in the entire pipeline network, and the relative position and connectivity of each pipeline object are maintained during the adjustment process. The pipeline object batch adjustment process is to first construct the pipeline network, and then synchronously adjust the associated pipeline objects according to the mobile pipeline objects.

[0100] (1) Constructing a pipeline network: Select a pipeline object A to be moved, and traverse each port from pipeline object A to see if there are other pipeline objects. If the currently traversed port A1 has a connected pipeline object B, the connected port is B1, mark port A1 and port B1 as traversed and do not traverse them again; continue to traverse other ports from the connected pipeline object B until all associated pipeline objects are found.

[0101] Move the pipeline object and adjust the associated pipeline objects synchronously. The pipeline object movement is divided into overall movement and local movement:

[0102] If the pipeline object is to be moved as a whole, select any point on the pipeline object A to be moved as the moving base point, use vector P to represent the moving direction and distance, move the pipeline object A, obtain the associated pipeline object of pipeline object A according to the constructed pipeline network and move it, and the moving direction and distance are consistent with pipeline object A.

[0103] If a local move is performed, any port coordinate point on the pipe object A to be moved is selected as the moving base point, and the docking direction of the port is used as the moving direction to move the pipe A. After the move, the position and direction of the associated pipes are individually adjusted according to step S401. Fig.14 (a) in the figure shows the initial state of the pipeline network. Pipe fitting A is selected to move 300mm in the positive X direction. After the movement, the associated pipeline objects of the pipe fitting are steel pipe A and steel pipe D. The coordinates of port 2 of steel pipe A are adjusted to move 300mm in the positive X direction. Port 1 and port 2 of steel pipe D are adjusted to move 300mm in the positive X direction to complete the movement of steel pipe A and steel pipe B. Port 2 of steel pipe D is connected to pipe fitting B before the movement, and the connected port is port 3. Pipe fitting B is moved 300mm in the positive X direction as a whole. The associated pipeline objects of pipe fitting B are steel pipe B, steel pipe D, steel pipe F and steel pipe E. Steel pipe D has been moved and will not be adjusted. Refer to the adjustment method of steel pipe A and steel pipe D to move steel pipe B, steel pipe F and steel pipe E. The subsequent adjustment method of steel pipe C, steel pipe G and pipe fitting C will not be repeated. After pipe fitting A moves 300mm in the positive X direction, as shown in the figure Fig.14 In the same way, adjust the steel pipe A to move 300mm in the positive direction of Y, as shown in (b) in the figure. Fig.14 As shown in (c) in the figure, adjust the steel pipe C to move 300mm in the negative direction of Y. Fig.14 As shown in (d) in .

[0104] At this point, the construction, parametric modeling and adjustment of the pipeline object database for the three-dimensional design of the hydropower station pipeline have been completed.

[0105] Example 2

[0106] This embodiment provides a three-dimensional design system for hydraulic pipelines in a hydropower station, which is characterized by comprising:

[0107] A pipeline object database construction module is used to construct a pipeline object database; the pipeline object database includes basic modeling specification parameters and material information of pipeline objects;

[0108] A pipeline object parameterized three-dimensional model construction module is used to construct a pipeline object parameterized three-dimensional model according to a pipeline object database; the pipeline object parameterized three-dimensional model includes a three-dimensional model body and port information;

[0109] The pipeline object connection logic design module is used to design the connection logic of the pipeline object according to the port information of the pipeline object parameterized three-dimensional model and the pipeline design flow direction;

[0110] A pipeline object layout method design module is used to design a pipeline object layout method according to the connection logic of the pipeline object, and complete the preliminary design of the water machine pipeline network according to the pipeline object layout method;

[0111] The pipeline object adjustment module is used to adjust the specification parameters and paths of the pipeline objects in the water machine pipeline network according to the connection logic of the pipeline objects and the actual changes in the building structure of the hydropower station.

[0112] Preferably, the pipeline object parametric three-dimensional model includes a steel pipe pipeline object parametric three-dimensional model, a pipe fitting pipeline object parametric three-dimensional model, and a valve object parametric three-dimensional model.

[0113] Preferably, the connection logic of the designed pipeline object includes pipeline turning design, pipeline connection design and pipeline branching design.

[0114] Example 3

[0115] This embodiment provides an electronic device, including:

[0116] Memory for storing computer programs;

[0117] The processor is used to execute the program stored in the memory to implement the steps of the above-mentioned embodiment of the three-dimensional design method for water turbine pipelines of a hydropower station.

[0118] For the specific implementation of each step and related explanations, please refer to the aforementioned embodiment of the three-dimensional design method for water turbine pipelines of a hydropower station, which will not be elaborated here.

[0119] The memory of the electronic device mentioned in this embodiment may include a random access memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory.

[0120] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0121] Example 4

[0122] The embodiment of the present invention further proposes a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, each step of the aforementioned three-dimensional design method for water turbine pipelines of a hydropower station is implemented.

[0123] For the specific implementation of each step and related explanations, please refer to the aforementioned embodiment of the three-dimensional design method for water turbine pipelines of a hydropower station, which will not be elaborated here.

Claims

1. A three-dimensional design method for water pipes in a hydropower station, characterized in that include: Constructing a pipeline object database, wherein the pipeline object database includes basic modeling specification parameters and material information of pipeline objects; Constructing a parameterized three-dimensional model of a pipeline object according to a pipeline object database, wherein the parameterized three-dimensional model of the pipeline object includes a three-dimensional model body and port information; Design the connection logic of the pipeline object according to the port information of the parametric 3D model of the pipeline object and the pipeline design flow direction; Design the layout method of pipeline objects according to the connection logic of pipeline objects, and complete the preliminary design of water machine pipeline network according to the pipeline object layout method; According to the connection logic of the pipeline object and the actual changes in the building structure of the hydropower station, the specification parameters and paths of the pipeline objects in the water machine pipeline network are adjusted.

2. The three-dimensional design method for hydraulic pipelines of a hydropower station according to claim 1, characterized in that: The construction of the pipeline object parametric three-dimensional model based on the pipeline object database includes parametric modeling of steel pipe pipeline objects, parametric modeling of pipe fitting pipeline objects, and parametric modeling of valve objects.

3. The three-dimensional design method for hydraulic pipelines of a hydropower station according to claim 1, characterized in that: The connection logic of the designed pipeline object includes pipeline turning design, pipeline connection design and pipeline branch design.

4. The three-dimensional design method for hydraulic pipelines of a hydropower station according to claim 1, characterized in that: The method for designing the arrangement of pipeline objects according to the connection logic of the pipeline objects comprises: Design individual layout methods for pipeline objects, including port layout or insertion layout based on the layout points of pipe fittings on the steel pipe; Design a batch layout method for pipeline objects, plan the pipeline network path according to the actual hydropower station building structure, and arrange pipeline objects freely or along the pipeline network path.

5. The three-dimensional design method for hydraulic pipelines of a hydropower station according to claim 1, characterized in that: The path adjustment of the pipeline object includes local and batch adjustment of the position direction of the pipe fitting pipeline object on the steel pipe pipeline object, and modification of the position direction of the steel pipe pipeline object and the length of the steel pipe.

6. A three-dimensional design system for water pipes in a hydropower station, characterized in that include: A pipeline object database construction module is used to construct a pipeline object database; the pipeline object database includes basic modeling specification parameters and material information of pipeline objects; A pipeline object parameterized three-dimensional model construction module is used to construct a pipeline object parameterized three-dimensional model according to a pipeline object database; the pipeline object parameterized three-dimensional model includes a three-dimensional model body and port information; The pipeline object connection logic design module is used to design the connection logic of the pipeline object according to the port information of the pipeline object parameterized three-dimensional model and the pipeline design flow direction; A pipeline object layout method design module is used to design a pipeline object layout method according to the connection logic of the pipeline object, and complete the preliminary design of the water machine pipeline network according to the pipeline object layout method; The pipeline object adjustment module is used to adjust the specification parameters and paths of the pipeline objects in the water machine pipeline network according to the connection logic of the pipeline objects and the actual changes in the building structure of the hydropower station.

7. The three-dimensional design system for hydraulic pipelines of a hydropower station according to claim 6, characterized in that: The pipeline object parametric three-dimensional model includes a steel pipe pipeline object parametric three-dimensional model, a pipe fitting pipeline object parametric three-dimensional model, and a valve object parametric three-dimensional model.

8. The three-dimensional design system for hydraulic pipelines of a hydropower station according to claim 6, characterized in that: The connection logic of the designed pipeline object includes pipeline turning design, pipeline connection design and pipeline branch design.

9. An electronic device, comprising: Memory for storing computer programs; A processor is used to execute the program stored in the memory to implement each step of the three-dimensional design method of the water turbine pipeline of a hydropower station according to any one of claims 1 to 5.

10. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, each step of the three-dimensional design method of a hydraulic pipeline of a hydropower station according to any one of claims 1 to 5 is implemented.

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