Processing method and device for valve disc of wedge gate valve in nuclear power plant

Abstract

This application relates to a method for machining a valve disc of a wedge gate valve in a nuclear power plant and a valve disc machining device, belonging to the field of machining. The method includes: determining the valve disc mid-plane of the valve disc corresponding to the valve disc three-dimensional model to be machined, and the seat mid-plane of the target valve seat corresponding to the valve seat three-dimensional model; determining at least one candidate machining plan corresponding to the valve disc to be machined according to the valve disc mid-plane and the seat mid-plane; determining the target machining plan from each candidate machining plan; wherein, the target machining plan is used to instruct the valve disc machining equipment to machine the valve disc to be machined. This application can achieve precise machining of the valve disc of the wedge gate valve in the nuclear power plant, improve the maintenance efficiency, and save human resources and time resources.

Description

Technical Field

[0001] This application relates to the field of machining, and particularly to a method for machining a valve disc of a wedge gate valve in a nuclear power plant and a valve disc machining device. Background Art

[0002] The sealing pair structure of a wedge gate valve is simple and reliable. Therefore, as an important system isolation boundary, the wedge gate valve is widely used in the nuclear power plant system; the valve disc of the wedge gate valve is designed with a "V" - shaped structure to achieve a tight fit between the sealing surface of the valve disc and the sealing surface of the valve seat.

[0003] However, for the reliable sealing performance of the valve, it is necessary to manually grind and correct the valve disc angle to be consistent with the valve seat angle to ensure a tight fit between the sealing surface of the valve disc and the sealing surface of the valve seat. This process requires a large amount of manpower and time. Summary of the Invention

[0004] Based on this, in view of the above - mentioned technical problems, it is necessary to provide a method for machining a valve disc of a wedge gate valve in a nuclear power plant and a valve disc machining device that can improve the maintenance and machining efficiency of the gate valve.

[0005] In a first aspect, this application provides a method for machining a valve disc of a wedge gate valve in a nuclear power plant, and the method includes:

[0006] Determine the valve disc mid - plane of the valve disc three - dimensional model corresponding to the valve disc to be machined, and the valve seat mid - plane of the valve seat three - dimensional model corresponding to the target valve seat;

[0007] According to the valve disc mid - plane and the valve seat mid - plane, determine at least one candidate machining plan corresponding to the valve disc to be machined;

[0008] Determine a target machining plan from each candidate machining plan; wherein, the target machining plan is used to instruct the valve disc machining equipment to machine the valve disc to be machined.

[0009] In one embodiment, according to the valve disc mid - plane and the valve seat mid - plane, determining at least one candidate machining plan corresponding to the valve disc to be machined includes: performing model assembly on the valve disc three - dimensional model and the valve seat three - dimensional model to obtain a combined model; according to the relative mid - plane positions of the valve disc mid - plane and the valve seat mid - plane in the combined model, determine at least one candidate machining plan corresponding to the valve disc to be machined.

[0010] In one embodiment, according to the relative mid - plane positions of the valve disc mid - plane and the valve seat mid - plane in the combined model, determining at least one candidate machining plan corresponding to the valve disc to be machined includes: determining the abnormal overlapping area and the abnormal cavity area in the combined model; according to the relative mid - plane position, the abnormal overlapping area and the abnormal cavity area, determine at least one candidate machining plan corresponding to the valve disc to be machined.

[0011] In one embodiment, determining the target machining solution from each candidate machining solution includes: determining the machining amount of the valve flap corresponding to each candidate machining solution; and taking the candidate machining solution with the smallest machining amount of the valve flap as the target machining solution.

[0012] In one embodiment, determining the middle split surface of the valve seat corresponding to the valve seat three-dimensional model of the target valve seat includes: determining the reference plane of the target valve seat; and determining the middle split surface of the valve seat corresponding to the valve seat three-dimensional model of the target valve seat according to the reference plane.

[0013] In a second aspect, the present application further provides a valve flap machining device. The device includes: a first rotating bracket, a second rotating bracket, a machining device, and a bearing base; the first rotating bracket is arranged on the upper surface of the second rotating bracket, and both the second rotating bracket and the machining device are arranged on the upper surface of the bearing base;

[0014] The first rotating bracket is used to clamp the valve flap to be machined and control the valve flap to be machined to rotate longitudinally;

[0015] The second rotating bracket is used to control the first rotating bracket to rotate horizontally;

[0016] The machining device is used to machine the valve flap to be machined;

[0017] The bearing base is used to bear the second rotating bracket and the machining device.

[0018] In a third aspect, the present application further provides a valve flap machining device for a nuclear power plant wedge gate valve. The device includes:

[0019] A first determination module, configured to determine the middle split surface of the valve flap corresponding to the valve flap three-dimensional model of the valve flap to be machined, and the middle split surface of the valve seat corresponding to the valve seat three-dimensional model of the target valve seat;

[0020] A second determination module, configured to determine at least one candidate machining solution corresponding to the valve flap to be machined according to the middle split surface of the valve flap and the middle split surface of the valve seat;

[0021] A third determination module, configured to determine a target machining solution from each candidate machining solution; wherein, the target machining solution is used to instruct the valve flap machining device to machine the valve flap to be machined.

[0022] In a fourth aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0023] Determine the middle split surface of the valve flap corresponding to the valve flap three-dimensional model of the valve flap to be machined, and the middle split surface of the valve seat corresponding to the valve seat three-dimensional model of the target valve seat;

[0024] Determine at least one candidate processing scheme corresponding to the valve flap to be processed according to the middle dividing surface of the valve flap and the middle dividing surface of the valve seat;

[0025] Determine the target processing scheme from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0026] In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0027] Determine the middle dividing surface of the valve flap corresponding to the valve flap three-dimensional model of the valve flap to be processed, and the middle dividing surface of the valve seat corresponding to the target valve seat corresponding to the valve seat three-dimensional model;

[0028] Determine at least one candidate processing scheme corresponding to the valve flap to be processed according to the middle dividing surface of the valve flap and the middle dividing surface of the valve seat;

[0029] Determine the target processing scheme from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0030] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0031] Determine the middle dividing surface of the valve flap corresponding to the valve flap three-dimensional model of the valve flap to be processed, and the middle dividing surface of the valve seat corresponding to the target valve seat corresponding to the valve seat three-dimensional model;

[0032] Determine at least one candidate processing scheme corresponding to the valve flap to be processed according to the middle dividing surface of the valve flap and the middle dividing surface of the valve seat;

[0033] Determine the target processing scheme from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0034] The above-mentioned processing method and device for the valve disc of the wedge gate valve in a nuclear power plant provide a reference benchmark for the matching of the valve disc to be processed and the target valve seat by determining the valve disc mid-plane of the valve disc three-dimensional model corresponding to the valve disc to be processed and the valve seat mid-plane of the valve seat three-dimensional model corresponding to the target valve seat. Furthermore, according to the valve disc mid-plane and the valve seat mid-plane, at least one candidate processing scheme corresponding to the valve disc to be processed is determined, ensuring that after the valve disc to be processed is processed according to the candidate processing scheme, the valve disc to be processed and the target valve seat can be mutually matched; furthermore, the target processing scheme is determined from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve disc processing equipment to perform valve disc processing on the valve disc to be processed, ensuring that the valve disc to be processed after being processed according to the target processing scheme can be closely attached to the target valve seat. Compared with the process of relying on manual grinding and correction of the valve disc angle to be the same as the valve seat angle in the prior art, the present application improves the maintenance efficiency of the wedge gate valve in the nuclear power plant. Description of the Drawings

[0035] Figure 1 It is a flowchart of a method for processing the valve disc of a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0036] Figure 2 It is a scanning example diagram of a target valve seat provided by an embodiment of the present application;

[0037] Figure 3 It is an example diagram of a valve disc mid-plane provided by an embodiment of the present application;

[0038] Figure 4 It is an example diagram of a valve seat mid-plane provided by an embodiment of the present application;

[0039] Figure 5 It is a flowchart of the steps for determining a candidate processing scheme provided by an embodiment of the present application;

[0040] Figure 6 It is an example diagram of a combined model provided by an embodiment of the present application;

[0041] Figure 7 It is an example diagram of the relative position of the mid-planes provided by an embodiment of the present application;

[0042] Figure 8 It is a flowchart of the steps for determining the target processing scheme provided by an embodiment of the present application;

[0043] Figure 9 It is a flowchart of the steps for determining the valve seat mid-plane provided by an embodiment of the present application;

[0044] Figure 10 It is a flowchart of another method for processing the valve disc of a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0045] Figure 11Schematic diagram of a valve flap processing device provided by an embodiment of the present application;

[0046] Figure 12 Structural block diagram of the first valve flap processing device for a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0047] Figure 13 Structural block diagram of the second valve flap processing device for a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0048] Figure 14 Structural block diagram of the third valve flap processing device for a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0049] Figure 15 Structural block diagram of the fourth valve flap processing device for a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0050] Figure 16 Structural block diagram of the fifth valve flap processing device for a wedge gate valve in a nuclear power plant provided by an embodiment of the present application;

[0051] Figure 17 Internal structure diagram of a computer device in an embodiment.

[0052] Reference numerals

[0053] 1. First rotating bracket; 2. Second rotating bracket; 3. Processing device; 4. Bearing base. Detailed implementation manners

[0054] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. In the description of the present application, the description of reference terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] In one embodiment, Figure 1The figure is a flowchart of a method for machining the valve disc of a wedge gate valve in a nuclear power plant provided by an embodiment of the present application. In this embodiment, an example is given in which this method is applied to a terminal. It can be understood that this method can also be applied to a server, or to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. Among them, the terminal can be, but is not limited to, various personal computers, laptop computers, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, etc. The portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The server can be implemented by an independent server or a server cluster composed of multiple servers. In this embodiment, the method includes the following steps:

[0057] In an exemplary embodiment, as Figure 1 shown, the method for machining the valve disc of a wedge gate valve in a nuclear power plant includes:

[0058] S101, determine the valve disc middle plane of the valve disc three-dimensional model corresponding to the valve disc to be machined, and the valve seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat.

[0059] Among them, the valve disc to be machined refers to the valve disc of the wedge gate valve in the nuclear power plant; the valve disc three-dimensional model refers to the three-dimensional model obtained by modeling the valve disc to be machined through simulation software; the valve disc middle plane is used to represent a plane perpendicular to the horizontal plane and parallel to the valve disc guide groove, and can make both sides of the valve disc symmetrical to each other; the target valve seat refers to the valve seat of the wedge gate valve in the nuclear power plant; the valve seat three-dimensional model refers to the three-dimensional model obtained by modeling the target valve seat through simulation software; the valve seat middle plane is used to represent a plane perpendicular to the horizontal plane and parallel to the target valve seat guide, and can make both sides of the valve seat symmetrical to each other.

[0060] In an embodiment of the present application, the valve disc to be machined and the target valve seat can be scanned and measured by a high-precision three-dimensional scanner to obtain the valve disc scan data of the valve disc to be machined and the valve seat scan data of the target valve seat; further, according to the valve disc scan data and the valve seat scan data, the valve disc to be machined and the target valve seat are modeled through simulation software to obtain the valve disc three-dimensional model corresponding to the valve disc to be machined and the valve seat three-dimensional model corresponding to the target valve seat; furthermore, symmetry analysis is performed on the valve disc three-dimensional model to determine at least one axisymmetric plane of the valve disc to be machined; from the axisymmetric planes of each valve disc to be machined, select the axisymmetric plane that satisfies being perpendicular to the horizontal plane and parallel to the valve disc guide groove as the valve disc middle plane of the valve disc three-dimensional model corresponding to the valve disc to be machined; similarly, symmetry analysis is performed on the valve seat three-dimensional model to determine at least one axisymmetric plane of the target valve seat; from the axisymmetric planes of each target valve seat, select the axisymmetric plane that satisfies being perpendicular to the horizontal plane and parallel to the target valve seat guide as the valve seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat.

[0061] Among them, the scanning example diagram of the high-precision three-dimensional scanner scanning and measuring the target valve seat is as Figure 2 shown; the example diagram of the middle split surface of the valve flap corresponding to the valve flap three-dimensional model of the valve flap to be machined is as Figure 3 shown; the example diagram of the middle split surface of the valve seat corresponding to the valve seat three-dimensional model of the target valve seat is as Figure 4 shown.

[0062] It should be noted that the valve flap scanning data may include: the spatial angle of the sealing surface of the valve flap to be machined, the guide groove characteristic parameters of the valve flap to be machined, the inner and outer diameter dimensions of the sealing surface of the valve flap to be machined, etc.; the valve seat scanning data may include: the spatial angle of the sealing surface of the target valve seat, the surface shape parameters of the sealing surface of the target valve seat, the guide characteristic parameters of the target valve seat, etc.

[0063] Furthermore, the spatial angle of the sealing surface of the valve flap to be machined can be determined by the included angle between the plane where the sealing surface of the valve flap to be machined is located and the plane where the upper flange surface of the target valve seat is located; the spatial angle of the sealing surface of the target valve seat can also be determined by the included angle between the plane where the sealing surface of the target valve seat is located and the plane where the upper flange surface of the target valve seat is located.

[0064] S102. Determine at least one candidate machining plan corresponding to the valve flap to be machined according to the middle split surface of the valve flap and the middle split surface of the valve seat.

[0065] In an embodiment of the present application, the process of determining at least one candidate machining plan corresponding to the valve flap to be machined may specifically include the following content: the plane distance between the middle split surface of the valve flap and the middle split surface of the valve seat in the combined model can be obtained through the relative position of the middle split surfaces of the valve flap and the valve seat; further, according to the plane distance between the middle split surface of the valve flap and the middle split surface of the valve seat, the machining amount of the valve flap to be machined and the interference amount between the valve flap to be machined and the target valve seat are determined; according to the machining amount of the valve flap to be machined and the interference amount between the valve flap to be machined and the target valve seat, at least one candidate machining plan corresponding to the valve flap to be machined is determined.

[0066] In another embodiment of the present application, the process of determining at least one candidate machining plan corresponding to the valve flap to be machined may specifically include the following content: the angle difference between the middle split surface of the valve flap and the middle split surface of the valve seat in the combined model can be obtained through the relative angle of the middle split surfaces of the valve flap and the valve seat; further, according to the angle difference between the middle split surface of the valve flap and the middle split surface of the valve seat, the machining amount of the valve flap to be machined and the interference amount between the valve flap to be machined and the target valve seat are determined; according to the machining amount of the valve flap to be machined and the interference amount between the valve flap to be machined and the target valve seat, at least one candidate machining plan corresponding to the valve flap to be machined is determined.

[0067] S103. Determine the target machining plan from each candidate machining plan.

[0068] Among them, the target processing plan is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0069] It should be noted that since there are differences in the valve flap processing amount and interference amount corresponding to each candidate processing plan, correspondingly, when the valve flap to be processed is processed according to each candidate processing plan, there are also differences in the matching accuracy between the valve flap to be processed and the target valve seat. In order to ensure the precise matching between the valve flap to be processed and the target valve seat, it is necessary to screen each candidate processing plan to obtain the target processing plan.

[0070] In an embodiment of the present application, each candidate processing plan can be screened according to the valve flap processing amount, and the candidate processing plan with the smallest valve flap processing amount is selected as the target processing plan.

[0071] As an example, if there are 3 candidate processing plans, namely candidate processing plan 1, candidate processing plan 2, and candidate processing plan 3; among them, the valve flap processing amount of candidate processing plan 1 is 30 mm, the valve flap processing amount of candidate processing plan 2 is 50 mm, and the valve flap processing amount of candidate processing plan 3 is 25 mm; since 25 mm < 30 mm < 50 mm, it can be seen that candidate processing plan 3 has the smallest valve flap processing amount. Therefore, candidate processing plan 3 is used as the target processing plan.

[0072] The above-mentioned method for processing the valve flap of the nuclear power plant wedge gate valve provides a reference benchmark for the matching between the valve flap to be processed and the target valve seat by determining the valve flap middle split surface of the valve flap three-dimensional model corresponding to the valve flap to be processed and the valve seat middle split surface of the valve seat three-dimensional model corresponding to the target valve seat. Furthermore, according to the valve flap middle split surface and the valve seat middle split surface, at least one candidate processing plan corresponding to the valve flap to be processed is determined, ensuring that after the valve flap to be processed is processed according to the candidate processing plan, the valve flap to be processed and the target valve seat can match each other; furthermore, the target processing plan is determined from each candidate processing plan; among them, the target processing plan is used to instruct the valve flap processing equipment to process the valve flap to be processed, ensuring that the valve flap to be processed and the target valve seat can be closely attached after being processed according to the target processing plan. Compared with the process of relying on manual grinding and correcting the valve flap angle to be the same as the valve seat angle in the prior art, the present application improves the maintenance efficiency of the nuclear power plant wedge gate valve.

[0073] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, the determination step of the candidate processing plan is optimized and improved, and the relative position of the middle split surface in the combined model of the valve flap middle split surface and the valve seat middle split surface is used as the reference basis for determining the candidate processing plan, ensuring the mutual matching between the valve flap to be processed and the target valve seat and improving the sealing performance between the valve flap to be processed and the target valve seat.

[0074] Such as Figure 5The candidate machining plan determination steps shown include the following steps:

[0075] S501, perform model assembly on the three-dimensional model of the valve disc and the three-dimensional model of the valve seat to obtain a combined model.

[0076] In an embodiment of the present application, the three-dimensional model of the valve disc and the three-dimensional model of the valve seat can be simulated and combined through simulation software. Specifically, according to the valve seat guide rail of the three-dimensional model of the valve seat, the valve disc guide rail groove of the three-dimensional model of the valve disc is installed into the three-dimensional model of the valve seat to achieve model assembly and obtain a combined model.

[0077] Exemplarily, if the three-dimensional model of the valve disc is the three-dimensional model of the wedge gate valve disc in a nuclear power plant, and the three-dimensional model of the valve seat is the three-dimensional model of the wedge gate valve seat in a nuclear power plant, then after model assembly, an example diagram of the combined model is as shown in Figure 6 shown.

[0078] S502, determine at least one candidate machining plan corresponding to the valve disc to be machined according to the relative position of the middle planes of the valve disc and the valve seat in the combined model.

[0079] Exemplarily, the relative position of the middle planes of the valve disc and the valve seat in the combined model is as shown in Figure 7 shown, where Figure 7 plane a in represents the middle plane of the valve disc, Figure 7 plane b in represents the middle plane of the valve seat.

[0080] In an embodiment of the present application, the process of determining at least one candidate machining plan corresponding to the valve disc to be machined may specifically include the following content: determining the abnormal overlapping area and the abnormal cavity area in the combined model; determining at least one candidate machining plan corresponding to the valve disc to be machined according to the relative position of the middle planes, the abnormal overlapping area and the abnormal cavity area.

[0081] Specifically, the combined model can be subjected to matching analysis through simulation software to obtain the abnormal overlapping area and the abnormal cavity area in the combined model; according to the relative position of the middle planes, the abnormal overlapping area and the abnormal cavity area, determine the machining amount of the valve disc to be machined and the interference amount between the valve disc to be machined and the target valve seat; furthermore, according to the machining amount of the valve disc and the interference amount, determine at least one candidate machining plan corresponding to the valve disc to be machined.

[0082] The above-mentioned machining method for the wedge gate valve disc in a nuclear power plant provides a reference basis for determining the machining amount of the valve disc through the relative position of the middle planes of the valve disc and the valve seat in the combined model, ensures the accuracy of the machining amount of the valve disc, and further enables the candidate machining plan to meet the matching requirements between the valve disc to be machined and the target valve seat.

[0083] Based on the technical solutions of the above embodiments, the present application also provides an alternative embodiment. In this alternative embodiment, the steps for determining the target machining plan are optimized and improved to achieve the effect of improving machining efficiency. Refer to Figure 8 The method shown includes the following steps:

[0084] S801, determine the machining amount of the valve disc corresponding to each candidate machining plan.

[0085] As a way of implementation, the planar distance between the middle split surface of the valve disc and the middle split surface of the valve seat can be obtained through the relative position of the middle split surfaces of the valve disc and the valve seat in the combined model; furthermore, based on the planar distance between the middle split surface of the valve disc and the middle split surface of the valve seat, this planar distance is used as the machining thickness of the valve disc to be machined, and this machining thickness is the machining amount of the valve disc corresponding to each candidate machining plan.

[0086] As another way of implementation, the angular difference between the middle split surface of the valve disc and the middle split surface of the valve seat can be obtained through the relative angle of the middle split surfaces of the valve disc and the valve seat in the combined model; furthermore, based on the angular difference between the middle split surface of the valve disc and the middle split surface of the valve seat, this angular difference is used as the machining angle value of the valve disc to be machined, and this machining angle value is the machining amount of the valve disc corresponding to each candidate machining plan.

[0087] S802, take the candidate machining plan with the smallest valve disc machining amount as the target machining plan.

[0088] As an example, if there are 3 candidate machining plans, namely candidate machining plan 4, candidate machining plan 5, and candidate machining plan 6; among them, the valve disc machining amount of candidate machining plan 4 is 25 mm, the valve disc machining amount of candidate machining plan 5 is 28 mm, and the valve disc machining amount of candidate machining plan 6 is 26 mm; since 25 mm < 26 mm < 28 mm, it can be seen that candidate machining plan 4 has the smallest valve disc machining amount. Therefore, candidate machining plan 4 is taken as the target machining plan.

[0089] The above method for machining the valve disc of the nuclear power plant wedge gate valve machines the valve disc to be machined through the machining amount of the valve disc corresponding to each candidate machining plan, ensuring that the valve disc to be machined can match the target valve seat. By taking the candidate machining plan with the smallest valve disc machining amount as the target machining plan, the machining efficiency is further improved and the maintenance cycle is shortened.

[0090] Based on the technical solutions of the above embodiments, the present application also provides an alternative embodiment. In this alternative embodiment, the steps for determining the middle split surface of the valve seat corresponding to the three-dimensional valve seat model of the target valve seat are optimized and improved, improving the accuracy of the middle split surface of the valve seat. Refer to Figure 9 The method shown includes the following:

[0091] S901. Determine the reference plane of the target valve seat.

[0092] S902. Determine the valve seat mid-plane of the valve seat 3D model corresponding to the target valve seat according to the reference plane.

[0093] It should be noted that due to the manufacturing process limitations of the wedge gate valve in nuclear power plants, the target valve seat guide rail is welded to the target valve seat inside the gate valve after being machined inside the wedge gate valve. Therefore, the positioning accuracy is low and it cannot be used as a reference. Since the gasket installation surface of the upper flange surface of the target valve seat is obtained by precision machining, with high precision and parallel to the horizontal plane, the gasket installation surface of the upper flange surface of the target valve seat can be used as the reference plane.

[0094] In an embodiment of the present application, the gasket installation surface of the upper flange surface of the target valve seat can be scanned by a 3D scanner first and used as the reference plane of the target valve seat; further, the middle vertical plane of the reference plane is calculated, which is the valve seat mid-plane of the valve seat 3D model corresponding to the target valve seat.

[0095] The above-mentioned method for machining the valve flap of the wedge gate valve in nuclear power plants determines the valve seat mid-plane of the valve seat 3D model corresponding to the target valve seat by using the reference plane as the reference. Since the reference plane has high precision and is parallel to the horizontal plane, the accuracy of the valve seat mid-plane of the valve seat 3D model corresponding to the target valve seat is ensured.

[0096] Based on the technical solutions of the above embodiments, the present application also provides an alternative embodiment, in which the machining process of the valve flap of the wedge gate valve in nuclear power plants is described in detail. See Figure 10 The method for machining the valve flap of the wedge gate valve in nuclear power plants shown, includes:

[0097] S1001. Determine the valve flap mid-plane of the valve flap 3D model corresponding to the valve flap to be machined.

[0098] S1002. Determine the reference plane of the target valve seat.

[0099] S1003. Determine the valve seat mid-plane of the valve seat 3D model corresponding to the target valve seat according to the reference plane.

[0100] S1004. Assemble the valve flap 3D model and the valve seat 3D model to obtain a combined model.

[0101] S1005. Determine the abnormal overlapping area and abnormal cavity area in the combined model.

[0102] S1006. Determine at least one candidate machining plan corresponding to the valve flap to be machined according to the relative position of the mid-plane, the abnormal overlapping area and the abnormal cavity area.

[0103] S1007, determine the machining allowance of the valve flap corresponding to each candidate machining plan.

[0104] S1008, take the candidate machining plan with the smallest machining allowance of the valve flap as the target machining plan.

[0105] In an alternative embodiment of the present application, it is possible to use a valve flap machining device as shown in Figure 11 to automatically machine the valve flap to be machined, so that the valve flap to be machined after machining matches the target valve seat. Among them, the valve flap machining device includes: a first rotating bracket, a second rotating bracket, a machining device, and a bearing base; the first rotating bracket is arranged on the upper surface of the second rotating bracket, and both the second rotating bracket and the machining device are arranged on the upper surface of the bearing base; the first rotating bracket is used to clamp the valve flap to be machined and control the longitudinal rotation of the valve flap to be machined; the second rotating bracket is used to control the transverse rotation of the first rotating bracket; the machining device is used to machine the valve flap to be machined; the bearing base is used to bear the second rotating bracket and the machining device.

[0106] In an alternative embodiment of the present application, a valve flap machining device equipped with a scanning device is also provided. The origin and spatial positioning of the scanning device are consistent with those of the machining device, so that the machining device can accurately locate the position of the valve flap to be machined. Among them, the scanning device can accurately measure the three-dimensional features of the valve flap to be machined, the angle of the sealing surface of the valve flap to be machined, and the surface shape of the sealing surface of the valve flap to be machined, and the measurement accuracy of the scanning device is better than 5 microns.

[0107] The above-mentioned method for machining the valve flap of the nuclear power plant wedge gate valve provides a reference benchmark for the matching of the valve flap to be machined and the target valve seat by determining the valve flap mid-plane of the valve flap three-dimensional model corresponding to the valve flap to be machined and the valve seat mid-plane of the valve seat three-dimensional model corresponding to the target valve seat. Furthermore, according to the valve flap mid-plane and the valve seat mid-plane, at least one candidate machining plan corresponding to the valve flap to be machined is determined, ensuring that after machining the valve flap to be machined according to the candidate machining plan, the valve flap to be machined and the target valve seat can match each other; furthermore, the target machining plan is determined from each candidate machining plan; among them, the target machining plan is used to instruct the valve flap machining device to machine the valve flap to be machined, ensuring that the valve flap to be machined after machining according to the target machining plan can be closely attached to the target valve seat. Compared with the prior art process of relying on manual grinding and correcting the valve flap angle to be the same as the valve seat angle, the present application improves the maintenance efficiency of the nuclear power plant wedge gate valve.

[0108] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless specifically stated herein, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least some of the steps or stages in other steps or other steps.

[0109] Based on the same inventive concept, an embodiment of the present application also provides a processing device for a wedge gate valve flap of a nuclear power plant for implementing the above-mentioned wedge gate valve flap processing method of a nuclear power plant. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the following processing device for a wedge gate valve flap of a nuclear power plant can refer to the limitations on the wedge gate valve flap processing method of a nuclear power plant in the above text, and will not be repeated here.

[0110] In one embodiment, as Figure 12 shown, a processing device for a wedge gate valve flap of a nuclear power plant is provided, including: a first determination module 10, a second determination module 20, and a third determination module 30, where:

[0111] The first determination module 10 is configured to determine the middle split surface of the valve flap corresponding to the three-dimensional model of the valve flap to be processed, and the middle split surface of the valve seat corresponding to the three-dimensional model of the target valve seat.

[0112] The second determination module 20 is configured to determine at least one candidate processing scheme corresponding to the valve flap to be processed according to the middle split surface of the valve flap and the middle split surface of the valve seat.

[0113] The third determination module 30 is configured to determine a target processing scheme from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0114] The above-mentioned processing device for the wedge gate valve flap of a nuclear power plant provides a reference benchmark for the matching of the to-be-processed valve flap and the target valve seat by determining the valve flap middle plane of the valve flap three-dimensional model corresponding to the to-be-processed valve flap and the valve seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat. Furthermore, according to the valve flap middle plane and the valve seat middle plane, at least one candidate processing scheme corresponding to the to-be-processed valve flap is determined, ensuring that after the to-be-processed valve flap is processed according to the candidate processing scheme, the to-be-processed valve flap and the target valve seat can be mutually matched. Furthermore, a target processing scheme is determined from each candidate processing scheme. Among them, the target processing scheme is used to instruct the valve flap processing equipment to process the to-be-processed valve flap, ensuring that the to-be-processed valve flap and the target valve seat can be closely fitted after being processed according to the target processing scheme. Compared with the process of manually grinding and correcting the valve flap angle to be the same as the valve seat angle in the prior art, the present application improves the maintenance efficiency of the wedge gate valve in the nuclear power plant.

[0115] In one embodiment, as Figure 13 shown, a processing device for the wedge gate valve flap of a nuclear power plant is provided. The second determination module 20 in the processing device for the wedge gate valve flap of a nuclear power plant includes: a model assembly unit 21 and a candidate scheme determination unit 22, where:

[0116] The model assembly unit 21 is configured to perform model assembly on the valve flap three-dimensional model and the valve seat three-dimensional model to obtain a combined model.

[0117] The candidate scheme determination unit 22 is configured to determine at least one candidate processing scheme corresponding to the to-be-processed valve flap according to the relative position of the middle planes of the valve flap middle plane and the valve seat middle plane in the combined model.

[0118] In one embodiment, as Figure 14 shown, a processing device for the wedge gate valve flap of a nuclear power plant is provided. The candidate scheme determination unit 22 in the processing device for the wedge gate valve flap of a nuclear power plant includes: a first determination subunit 221 and a second determination subunit 222, where:

[0119] The first determination subunit 221 is configured to determine the abnormal overlapping area and the abnormal cavity area in the combined model.

[0120] The second determination subunit 222 is configured to determine at least one candidate processing scheme corresponding to the to-be-processed valve flap according to the relative position of the middle planes, the abnormal overlapping area, and the abnormal cavity area.

[0121] In one embodiment, as Figure 15 shown, a processing device for the wedge gate valve flap of a nuclear power plant is provided. The third determination module 30 in the processing device for the wedge gate valve flap of a nuclear power plant includes: a processing amount determination unit 31 and a target scheme determination unit 32, where:

[0122] The machining amount determination unit 31 is configured to determine the machining amount of the valve flap corresponding to each candidate machining plan.

[0123] The target plan determination unit 32 is configured to use the candidate machining plan with the smallest machining amount of the valve flap as the target machining plan.

[0124] In one embodiment, as Figure 16 shown, a machining device for a wedge gate valve flap in a nuclear power plant is provided. The first determination module 10 in the machining device for the wedge gate valve flap in the nuclear power plant includes: a reference plane determination unit 11 and a middle split plane determination unit 12, where:

[0125] The reference plane determination unit 11 is configured to determine the reference plane of the target valve seat.

[0126] The middle split plane determination unit 12 is configured to determine the middle split plane of the valve seat corresponding to the three-dimensional model of the valve seat of the target valve seat according to the reference plane.

[0127] Each module in the above-mentioned machining device for the wedge gate valve flap in the nuclear power plant can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in the processor in the computer device in the form of hardware or be independent of it, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0128] In one embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 17As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it realizes a method for machining the valve disc of a wedge gate valve in a nuclear power plant. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0129] Those skilled in the art can understand that Figure 17 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0130] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the following steps are implemented:

[0131] Determine the valve disc middle plane of the valve disc three-dimensional model corresponding to the valve disc to be machined, and the valve seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat;

[0132] According to the valve disc middle plane and the valve seat middle plane, determine at least one candidate machining plan corresponding to the valve disc to be machined;

[0133] Determine the target machining plan from each candidate machining plan; wherein, the target machining plan is used to instruct the valve disc machining device to machine the valve disc to be machined.

[0134] In one embodiment, when the processor executes a computer program, the following steps are further implemented: assembling the valve flap three-dimensional model and the valve seat three-dimensional model to obtain a combined model; determining at least one candidate processing scheme corresponding to the valve flap to be processed according to the relative position of the middle dividing planes of the valve flap and the valve seat in the combined model.

[0135] In one embodiment, when the processor executes a computer program, the following steps are further implemented: determining the abnormal overlapping region and the abnormal cavity region in the combined model; determining at least one candidate processing scheme corresponding to the valve flap to be processed according to the relative position of the middle dividing planes, the abnormal overlapping region, and the abnormal cavity region.

[0136] In one embodiment, when the processor executes a computer program, the following steps are further implemented: determining the machining amount of the valve flap corresponding to each candidate processing scheme; taking the candidate processing scheme with the smallest valve flap machining amount as the target processing scheme.

[0137] In one embodiment, when the processor executes a computer program, the following steps are further implemented: determining the reference plane of the target valve seat; determining the middle dividing plane of the valve seat three-dimensional model corresponding to the target valve seat according to the reference plane.

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0139] Determining the middle dividing plane of the valve flap three-dimensional model corresponding to the valve flap to be processed and the middle dividing plane of the valve seat three-dimensional model corresponding to the target valve seat;

[0140] Determining at least one candidate processing scheme corresponding to the valve flap to be processed according to the middle dividing plane of the valve flap and the middle dividing plane of the valve seat;

[0141] Determining a target processing scheme from each candidate processing scheme; wherein, the target processing scheme is used to instruct the valve flap processing equipment to process the valve flap to be processed.

[0142] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: assembling the valve flap three-dimensional model and the valve seat three-dimensional model to obtain a combined model; determining at least one candidate processing scheme corresponding to the valve flap to be processed according to the relative position of the middle dividing planes of the valve flap and the valve seat in the combined model.

[0143] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the abnormal overlapping region and the abnormal cavity region in the combined model; determining at least one candidate processing scheme corresponding to the valve flap to be processed according to the relative position of the middle dividing planes, the abnormal overlapping region, and the abnormal cavity region.

[0144] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the machining amount of the valve flap corresponding to each candidate machining scheme; and taking the candidate machining scheme with the smallest machining amount of the valve flap as the target machining scheme.

[0145] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the reference plane of the target valve seat; and determining the middle split plane of the valve seat three-dimensional model corresponding to the target valve seat according to the reference plane.

[0146] In one embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the following steps:

[0147] determining the middle split plane of the valve flap three-dimensional model corresponding to the valve flap to be machined and the middle split plane of the valve seat three-dimensional model corresponding to the target valve seat;

[0148] determining at least one candidate machining scheme corresponding to the valve flap to be machined according to the middle split plane of the valve flap and the middle split plane of the valve seat;

[0149] determining a target machining scheme from each candidate machining scheme; wherein the target machining scheme is used to instruct the valve flap machining equipment to machine the valve flap to be machined.

[0150] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: performing model assembly on the valve flap three-dimensional model and the valve seat three-dimensional model to obtain a combined model; and determining at least one candidate machining scheme corresponding to the valve flap to be machined according to the relative position of the middle split planes in the combined model of the middle split plane of the valve flap and the middle split plane of the valve seat.

[0151] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the abnormal overlapping area and the abnormal cavity area in the combined model; and determining at least one candidate machining scheme corresponding to the valve flap to be machined according to the relative position of the middle split planes, the abnormal overlapping area and the abnormal cavity area.

[0152] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the machining amount of the valve flap corresponding to each candidate machining scheme; and taking the candidate machining scheme with the smallest machining amount of the valve flap as the target machining scheme.

[0153] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: determining the reference plane of the target valve seat; and determining the middle split plane of the valve seat three-dimensional model corresponding to the target valve seat according to the reference plane.

[0154] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions.

[0155] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. This computer program can be stored in a non-volatile computer-readable storage medium. When this computer program is executed, it can include the processes of the embodiments of the above various methods. Among them, any reference to a memory, data block, or other medium used in the various embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The data blocks involved in the various embodiments provided in this application can include at least one of relational data blocks and non-relational data blocks. Non-relational data blocks can include distributed data blocks based on blockchain, etc., without limitation. The processors involved in the various embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0156] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0157] The above embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A processing method for the valve disc of a wedge gate valve in a nuclear power plant, characterized in that, The method includes: Determining the valve disc middle plane of the valve disc corresponding to the valve disc three-dimensional model, and the seat middle plane of the target valve seat corresponding to the valve seat three-dimensional model; Performing model assembly on the valve disc three-dimensional model and the valve seat three-dimensional model to obtain a combined model; Determining the abnormal overlapping area and the abnormal cavity area in the combined model; Determining at least one candidate processing plan corresponding to the valve disc to be processed according to the relative position of the middle planes of the valve disc middle plane and the valve seat middle plane in the combined model, the abnormal overlapping area, and the abnormal cavity area; Determining a target processing plan from each of the candidate processing plans; wherein, the target processing plan is used to instruct the valve disc processing device to perform valve disc processing on the valve disc to be processed.

2. The method according to claim 1, wherein The performing model assembly on the valve disc three-dimensional model and the valve seat three-dimensional model to obtain a combined model includes: Installing the valve disc guide groove of the valve disc three-dimensional model into the valve seat three-dimensional model according to the valve seat guide of the valve seat three-dimensional model to obtain a combined model.

3. The method according to claim 1, wherein The determining at least one candidate processing plan corresponding to the valve disc to be processed according to the relative position of the middle planes of the valve disc middle plane and the valve seat middle plane in the combined model, the abnormal overlapping area, and the abnormal cavity area includes: Determining the valve disc processing amount of the valve disc to be processed, and the interference amount between the valve disc to be processed and the target valve seat according to the relative position of the middle planes of the valve disc middle plane and the valve seat middle plane in the combined model, the abnormal overlapping area, and the abnormal cavity area; Determining at least one candidate processing plan corresponding to the valve disc to be processed according to the valve disc processing amount and the interference amount.

4. The method according to any one of claims 1 to 3, characterized in that, The determining a target processing plan from each of the candidate processing plans includes: Determining the valve disc processing amount corresponding to each of the candidate processing plans; Taking the candidate processing plan with the smallest valve disc processing amount as the target processing plan.

5. The method according to any one of claims 1 to 3, characterized in that, Determining the seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat includes: Determining the reference plane of the target valve seat; Determining the seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat according to the reference plane.

6. A valve flap processing device, characterized in that, The valve disc processing device includes: a first rotating bracket, a second rotating bracket, a processing device, and a bearing base; the first rotating bracket is arranged on the upper surface of the second rotating bracket, and both the second rotating bracket and the processing device are arranged on the upper surface of the bearing base; The first rotating bracket is used for clamping the valve disc to be processed and controlling the valve disc to be processed to perform longitudinal rotation; The second rotating bracket is used for controlling the first rotating bracket to perform lateral rotation; The processing device is used for processing the valve disc to be processed according to the target processing plan; wherein, the target processing plan is determined based on the valve disc processing method of the nuclear power plant wedge gate valve according to any one of claims 1-5; The bearing base is used for bearing the second rotating bracket and the processing device.

7. A processing device for the valve disc of a wedge gate valve in a nuclear power plant, characterized in that, The device includes: A first determination module, configured to determine the valve disc middle plane of the valve disc corresponding to the valve disc to be processed, and the seat middle plane of the valve seat three-dimensional model corresponding to the target valve seat; A second determination module, configured to perform model assembly on the three-dimensional model of the valve flap and the three-dimensional model of the valve seat to obtain a combined model; determine abnormal overlapping regions and abnormal cavity regions in the combined model; and determine at least one candidate processing plan corresponding to the valve flap to be processed according to the relative positions of the middle planes of the valve flap and the valve seat in the combined model, the abnormal overlapping regions, and the abnormal cavity regions. A third determination module, configured to determine a target processing plan from each of the candidate processing plans; wherein the target processing plan is used to instruct a valve flap processing device to perform valve flap processing on the valve flap to be processed.

8. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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