Method, system and device for determining repair parameters of boss head overlay welding of nuclear power plant and medium

Abstract

The present application relates to the technical field of nuclear power plant maintenance optimization, and particularly relates to a nuclear power plant BOSS head surfacing repair parameter determination method, system, device and medium, which receives a surfacing repair instruction for repairing a preset surface of a nuclear power plant BOSS head; performs surfacing operation on a simulated surface of a BOSS head simulated pipe fitting according to surfacing repair parameters, to obtain a surfacing repair result corresponding to each group of surfacing repair parameters; the simulated surface refers to a surface on the BOSS head simulated pipe fitting that is consistent with the size and material of the preset surface; each BOSS head simulated pipe fitting is subjected to surfacing operation by a group of surfacing repair parameters and obtains a surfacing repair result; from all surfacing repair results corresponding to the same surfacing repair parameter set, an optimal repair parameter corresponding to a variable repair parameter of the surfacing repair parameter set is determined; and a target repair parameter is determined according to the optimal repair parameters corresponding to each surfacing repair parameter set. The present application improves the safety of BOSS head surfacing repair.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear power plant maintenance optimization, and in particular to a nuclear power plant BOSS head surfacing repair parameter determination method, system, device and medium. BACKGROUND

[0002] At present, a large number of BOSS heads (nuclear power plant special nozzle seats) for reinforcing transition design are used in nuclear power plants. The branch pipe and the parent pipe of the BOSS head are full penetration fillet welds. Such welds are easily affected by temperature or external pressure, and thus the welds are prone to failure and leakage during the operation of the nuclear power plant equipment, reducing the safety of the operation of the nuclear power plant equipment.

[0003] In the prior art, the BOSS head weld leakage is often repaired by manual repair. However, the BOSS head is often arranged in the main loop and the secondary and tertiary component pipeline system of the nuclear power plant, and the primary loop system contains radioactive medium. The leakage of the radioactive medium increases the difficulty of BOSS head maintenance and has a high contamination risk, thereby resulting in low BOSS head maintenance efficiency and low safety of the maintenance personnel during the maintenance process. SUMMARY

[0004] The embodiments of the present application provide a nuclear power plant BOSS head surfacing repair parameter determination method, system, device and medium to solve the problems of low BOSS head maintenance efficiency and low maintenance safety.

[0005] A nuclear power plant BOSS head surfacing repair parameter determination method, comprising:

[0006] receiving a surfacing repair instruction for repairing a preset surface of a nuclear power plant BOSS head; the surfacing repair instruction includes a plurality of surfacing repair parameter sets, and each surfacing repair parameter set includes a plurality of groups of surfacing repair parameters; each group of surfacing repair parameters in the same surfacing repair parameter set includes at least one same fixed repair parameter and at least one different variable repair parameter; and the variable repair parameters in different surfacing repair parameter sets are all different; the nuclear power plant BOSS head includes a parent pipe and a branch pipe connected to the parent pipe at a preset angle; and the preset surface refers to the surface of the joint between the parent pipe and the branch pipe;

[0007] surfacing the simulation surface of the BOSS head simulation pipe according to the surfacing repair parameters to obtain a surfacing repair result corresponding to each group of surfacing repair parameters; the simulation surface refers to a surface on the BOSS head simulation pipe that is consistent with the size and material of the preset surface; each BOSS head simulation pipe is surfaced by one group of surfacing repair parameters and obtains a surfacing repair result;

[0008] determining the optimal repair parameter corresponding to the variable repair parameter of the surfacing repair parameter set from all the surfacing repair results corresponding to the same surfacing repair parameter set;

[0009] determining the target repair parameter according to the optimal repair parameter corresponding to each surfacing repair parameter set.

[0010] A surfacing repair parameter determination system for a BOSS head of a nuclear power plant, comprising a controller for executing the surfacing repair parameter determination method for the BOSS head of the nuclear power plant.

[0011] A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the surfacing repair parameter determination method for the BOSS head of the nuclear power plant when executing the computer program.

[0012] A computer readable storage medium, which stores a computer program, wherein the computer program is executable by a processor to implement the surfacing repair parameter determination method for the BOSS head of the nuclear power plant.

[0013] The surfacing repair parameter determination method, system, device, and medium for the BOSS head of the nuclear power plant, which simulates the surface of the BOSS head pipe fitting by using multiple surfacing repair parameter sets, and then obtains the optimal repair parameter corresponding to the variable repair parameter of the surfacing repair parameter set, so as to determine the target repair parameter according to the optimal repair parameter corresponding to each surfacing repair parameter set. The target repair parameter is used as the parameter for surfacing repair of the preset surface of the BOSS head, which can improve the accuracy and efficiency of the surfacing repair of the BOSS head, and can replace the manual repair mode to improve the safety of the surfacing repair of the BOSS head. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is an application environment diagram of the surfacing repair parameter determination method for the BOSS head of the nuclear power plant in an embodiment of the present application;

[0016] Figure 2 is a flowchart of the surfacing repair parameter determination method for the BOSS head of the nuclear power plant in an embodiment of the present application;

[0017] Figure 3is a schematic diagram of a computer device in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0019] The nuclear power plant BOSS head surfacing repair parameter determination method provided by the embodiments of the present application can be applied in an application environment as shown in Figure 1 . Specifically, the nuclear power plant BOSS head surfacing repair parameter determination method is applied in a nuclear power plant BOSS head surfacing repair parameter determination system, which includes a client and a server as shown in Figure 1 . The client and the server communicate through a network, and are used to solve the problems of low maintenance efficiency and low maintenance safety of the BOSS head. The client, also known as the user end, is a program that provides local services for the client corresponding to the server. The client can be installed on, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices. The server can be implemented by an independent server or a server cluster composed of multiple servers.

[0020] In an embodiment, as shown in Figure 2 , a nuclear power plant BOSS head surfacing repair parameter determination method is provided. Taking the server in Figure 1 as an example, the method includes the following steps:

[0021] S10: receiving a surfacing repair instruction for repairing a preset surface of a nuclear power plant BOSS head; the surfacing repair instruction includes a plurality of surfacing repair parameter sets, and each surfacing repair parameter set includes a plurality of groups of surfacing repair parameters; each group of surfacing repair parameters in the same surfacing repair parameter set includes at least one fixed repair parameter which is the same and at least one variable repair parameter which is different; and the variable repair parameters in different surfacing repair parameter sets are all different; the nuclear power plant BOSS head includes a main pipe and a branch pipe connected to the main pipe at a preset angle; and the preset surface refers to the surface at the joint of the main pipe and the branch pipe;

[0022] It can be understood that the overlay repair instruction can be sent by the nuclear power plant worker, or can be automatically generated when the worker inputs the repair information of the nuclear power plant BOSS head. The overlay repair parameter set includes a plurality of groups of overlay repair parameters, and the overlay repair parameters are used for overlay operation on the BOSS head; the overlay repair parameters include but are not limited to interpass temperature, welding mode, internal medium and welding speed; wherein the temperature range of the interpass temperature is 50-250℃; the welding mode includes drag welding and oscillating welding; the internal medium includes water-free medium and water-containing medium; and the welding speed ranges from 20mm / min to 40mm / min.

[0023] Further, the variable repair parameters in the overlay repair parameter set are all different. For example, assuming that the variable repair parameter in one of the overlay repair parameter sets is the interpass temperature, the interpass temperatures of the overlay repair parameters in this overlay repair parameter set are all different, and the variable repair parameters in other overlay repair parameter sets are not the interpass temperature, but may be the welding mode, the internal medium or the welding speed. Further, the variable repair parameter in the overlay repair parameter set can also be a combination of two parameters such as the welding mode and the internal medium. That is, the fixed repair parameter and the variable repair parameter in one of the overlay repair parameter sets are at least one of the interpass temperature, the welding mode, the internal medium and the welding speed; and the fixed repair parameter and the variable repair parameter in the same group of overlay repair parameters are different.

[0024] Further, the nuclear power plant BOSS head includes a main pipe and a branch pipe connected to the main pipe at a preset angle, and the center axis of the main pipe and the center axis of the branch pipe are in the same plane, and the preset angle is an acute angle or a right angle; the preset surface of the nuclear power plant BOSS head is the surface at the junction of the main pipe and the branch pipe.

[0025] S20: overlaying the simulation surface of the BOSS head simulation pipe according to the overlay repair parameters to obtain an overlay repair result corresponding to each group of overlay repair parameters; the simulation surface refers to the surface on the BOSS head simulation pipe which is consistent with the size and material of the preset surface; each BOSS head simulation pipe is overlaid by one group of overlay repair parameters and obtains an overlay repair result;

[0026] It can be understood that the simulation surface is a surface on the BOSS head simulation pipe fitting which is consistent with the size and material of the preset surface, that is, the BOSS head simulation pipe fitting is the same as the BOSS head of the nuclear power plant, and the simulation mother pipe and the simulation branch pipe connected to the simulation mother pipe at a preset angle are also provided on the BOSS head simulation pipe fitting. The simulation surface is the surface at the joint of the simulation mother pipe and the simulation branch pipe, so that the simulation surface is the same as the preset surface of the BOSS head, and the accuracy of the BOSS head overlay repair parameter determination of the nuclear power plant is improved. Further, a plurality of BOSS head simulation pipe fittings are provided in the embodiment, and each BOSS head simulation pipe fitting is subjected to overlay operation by a set of the overlay repair parameters and obtains an overlay repair result. The base material of the simulation surface of the BOSS head simulation pipe fitting can be a stainless steel base material or a carbon steel base material.

[0027] In a specific embodiment, in step S20, that is, the overlay operation on the simulation surface of the BOSS head simulation pipe fitting according to the overlay repair parameters to obtain the overlay repair result corresponding to each set of the overlay repair parameters includes:

[0028] According to the overlay repair parameters, a preset overlay processing equipment is controlled to weld a welding rod backing layer on the simulation surface; the size of the welding rod backing layer is a first preset length and a first preset width.

[0029] Specifically, after receiving the overlay repair instruction for repairing the preset surface of the BOSS head of the nuclear power plant, the overlay repair parameters are input to a preset overlay processing equipment to control the preset overlay processing equipment to weld a welding rod backing layer on the simulation surface, wherein the welding rod backing layer includes a first welding rod backing layer and a second welding rod backing layer, that is, the preset overlay processing equipment is controlled to weld the first welding rod backing layer on the simulation surface in a preset welding direction, and the preset overlay processing equipment is controlled to weld the second welding rod backing layer on the first welding rod backing layer in the same preset welding direction. Further, the size of the first welding rod backing layer and the second welding rod backing layer is a first preset length and a first preset width. For example, the first preset length can be set to 150 mm, and the first preset width can be set to 15 mm.

[0030] The preset overlay processing equipment is controlled to weld a machining layer on the welding rod backing layer; the size of the machining layer is a second preset length and a second preset width; the second preset length is equal to the first preset length; and the second preset width is less than the first preset width.

[0031] Specifically, after controlling the preset build-up welding processing device to weld the welding rod primer layer on the simulated surface, the preset build-up welding processing device is controlled to weld the machining layer on the welding rod primer layer. In the embodiment, the size of the machining layer is limited to the second preset length and the second preset width, which is only an example. The size of the machining layer can be adjusted according to specific processing requirements. In the embodiment, the second preset length is equal to the first preset length of the welding rod primer layer, and the second preset width is less than the first preset width of the welding rod primer layer. For example, the second preset length can be set to 150 mm, and the second preset width can be set to 8 mm.

[0032] The preset build-up welding processing device is controlled to weld the wire build-up welding layer on the machining layer. The size of the wire build-up welding layer is a third preset length and a third preset width. The third preset length is less than the first preset length. The third preset width is greater than the second preset width and less than the first preset width.

[0033] Specifically, after controlling the preset build-up welding processing device to weld the machining layer on the welding rod primer layer, the preset build-up welding processing device is controlled to weld the wire build-up welding layer on the machining layer. The wire build-up welding layer includes a first wire build-up welding layer, a second wire build-up welding layer, and a third wire build-up welding layer. That is, after controlling the preset build-up welding processing device to weld the machining layer on the welding rod primer layer, the preset build-up welding processing device is controlled to weld the first wire build-up welding layer on the machining layer, and then weld the second wire build-up welding layer on the first wire build-up welding layer, and then weld the third wire build-up welding layer on the second wire build-up welding layer. Further, the third preset length includes a first wire length corresponding to the first wire build-up welding layer, a second wire length corresponding to the second wire build-up welding layer, and a third wire length corresponding to the third wire build-up welding layer. The first wire length is greater than the second wire length, and the second wire length is greater than the third wire length. The widths of the first wire build-up welding layer, the second wire build-up welding layer, and the third wire build-up welding layer are the third preset width. For example, the first wire length of the first wire build-up welding layer can be set to 120 mm, the second wire length of the second wire build-up welding layer can be set to 80 mm, and the third wire length of the third wire build-up welding layer can be set to 50 mm. The widths of the first wire build-up welding layer, the second wire build-up welding layer, and the third wire build-up welding layer are all set to the third preset width, which can be set to 12 mm.

[0034] A plurality of metallographic observation devices are arranged on the wire build-up welding layer, and the build-up welding repair result is determined by the metallographic observation devices.

[0035] It can be understood that the metallographic observation device refers to a device set on different wire cladding layers and used for observing the metallograph of each wire cladding layer. Further, the metallographic observation device can be moved by a preset controller, so that the metallographic observation device can observe the cladding repair result through different fields of view, thereby improving the accuracy of the cladding repair result.

[0036] Specifically, after the preset cladding processing device is controlled to weld the wire cladding layer on the machined layer, two metallographic observation devices are arranged on the first wire cladding layer, two metallographic observation devices are arranged on the second wire cladding layer, and two metallographic observation devices are arranged on the third wire cladding layer, so as to determine the cladding repair result through each metallographic observation device. It should be noted that the two metallographic observation devices arranged on each wire cladding layer in the embodiment are preferred experience values. If one metallographic observation device is arranged on each wire cladding layer, the cladding repair result may be deviated due to the difference in the observation field of view. If more than two metallographic observation devices are arranged on each wire cladding layer, the size of each wire cladding layer needs to be expanded, which leads to waste of welding resources and long welding time.

[0037] S30: determining an optimal repair parameter corresponding to the variable repair parameter of the same set of cladding repair parameters from all the cladding repair results corresponding to the set of cladding repair parameters;

[0038] It can be understood that the optimal repair parameter refers to the best cladding repair effect of the preset surface of the BOSS head under the optimal repair parameter.

[0039] Specifically, after the simulated surface of the BOSS head pipe is cladded according to the cladding repair parameters, the optimal repair parameter corresponding to the variable repair parameter of the same set of cladding repair parameters is determined from all the cladding repair results corresponding to the set of cladding repair parameters.

[0040] S40: determining a target repair parameter according to the optimal repair parameter corresponding to each set of cladding repair parameters.

[0041] Specifically, the optimal repair parameter corresponding to the variable repair parameter of the same set of overlay repair parameters is determined from all the overlay repair results corresponding to the set of overlay repair parameters, and the target repair parameter is determined according to the optimal repair parameter corresponding to each set of overlay repair parameters, that is, after the optimal repair parameter corresponding to each set of overlay repair parameters is determined, the optimal value of each variable repair parameter in the overlay repair parameter can be determined, and then the target repair parameter can be determined according to the optimal repair parameter corresponding to each set of overlay repair parameters, so as to use the target repair parameter as the overlay repair parameter for repairing the preset surface of the BOSS head of the nuclear power plant, thereby improving the accuracy and efficiency of the overlay repair of the BOSS head.

[0042] Further, in step S30, the optimal repair parameter corresponding to the variable repair parameter of each set of overlay repair parameters is obtained. For example, it is assumed that the obtained optimal repair parameter includes an interpass temperature range of 50-100℃, a welding method of drag welding, an internal medium of water medium, and a welding speed of 40mm / min. Therefore, the finally determined target repair parameter is the integration of the interpass temperature range of 50-100℃, the welding method of drag welding, the internal medium of water medium, and the welding speed of 40mm / min.

[0043] In the embodiment, the simulated surface of the BOSS head simulation pipe is subjected to overlay operation by using a plurality of sets of overlay repair parameters, and then the optimal repair parameter corresponding to the variable repair parameter of the set of overlay repair parameters can be simulated, so as to determine the target repair parameter according to the optimal repair parameter corresponding to each set of overlay repair parameters. Using the target repair parameter as the parameter for overlay repair of the preset surface of the BOSS head can improve the accuracy and efficiency of the overlay repair of the BOSS head, and can replace the manual repair method to improve the safety of the overlay repair of the BOSS head.

[0044] In an embodiment, the overlay repair result includes a first repair result;

[0045] In step S20, that is, the simulated surface of the BOSS head simulation pipe is subjected to overlay operation according to the overlay repair parameter, and the overlay repair result corresponding to each set of overlay repair parameters is obtained, which includes:

[0046] When the variable repair parameter of the set of overlay repair parameters is the interpass temperature, and the fixed repair parameter is the welding method, the internal medium, and the welding speed, the simulated surface of the BOSS head simulation pipe is subjected to overlay operation according to the overlay repair parameter, and the first repair result corresponding to each set of overlay repair parameters in the set of overlay repair parameters is determined by using a metallographic observation device; the range of the interpass temperature is 50-250℃.

[0047] It can be understood that, assuming that the variable repair parameter in one of the sets of surfacing repair parameters is only the interpass temperature, the corresponding fixed repair parameters include the welding mode, the internal medium and the welding speed, that is, each of the sets of surfacing repair parameters in the set of surfacing repair parameters contains different interpass temperature parameters, and the welding mode, the internal medium and the welding speed are the same, and then the simulated surface of the BOSS head simulation pipe is subjected to surfacing operation according to each of the sets of surfacing repair parameters in the set of surfacing repair parameters, and the first repair result corresponding to each of the sets of surfacing repair parameters in the set of surfacing repair parameters is determined by the metallographic observation device arranged on the surfacing layer.

[0048] In step S30, that is, the optimal repair parameter corresponding to the variable repair parameter of the set of surfacing repair parameters is determined from all the surfacing repair results corresponding to the same set of surfacing repair parameters, including:

[0049] The first maximum penetration value in the first repair result corresponding to each of the sets of surfacing repair parameters in the set of surfacing repair parameters is obtained.

[0050] It can be understood that the maximum penetration value refers to the maximum weld depth of the first layer welded on the simulated surface and the simulated surface of the base parent material of the BOSS head simulation pipe (such as the stainless steel parent material or the carbon steel parent material indicated in the above description).

[0051] Specifically, when the variable repair parameter of the set of surfacing repair parameters is the interpass temperature and the fixed repair parameter is the welding mode, the internal medium and the welding speed, after the simulated surface of the BOSS head simulation pipe is subjected to surfacing operation according to the set of surfacing repair parameters and the first repair result corresponding to each of the sets of surfacing repair parameters in the set of surfacing repair parameters is determined by the metallographic observation device, the first maximum penetration value in the first repair result corresponding to each of the sets of surfacing repair parameters in the set of surfacing repair parameters is obtained, and the first maximum penetration value can be detected by the metallographic observation device.

[0052] Each of the first maximum penetration values is compared with a preset penetration threshold value, and the interpass temperature corresponding to the first maximum penetration value less than or equal to the preset penetration threshold value is recorded as a target interpass temperature.

[0053] The interpass temperature range is determined according to each of the target interpass temperatures, and the interpass temperature range is recorded as the optimal repair parameter corresponding to the variable repair parameter of the set of surfacing repair parameters.

[0054] Optionally, the preset penetration threshold value can be selected according to different base parent materials of the BOSS head simulation pipe or welding requirements, and the preset penetration threshold value can be set to 1.11 mm, for example.

[0055] Specifically, after obtaining the first maximum penetration value in the first repair result corresponding to each set of overlay repair parameters in the overlay repair parameter set, the first maximum penetration value is compared with the preset penetration threshold value, the first maximum penetration value less than or equal to the preset penetration threshold value is recorded as the target interpass temperature, and the interpass temperature range is determined according to the minimum value and the maximum value in each target interpass temperature, so as to record the interpass temperature range as the optimal repair parameter corresponding to the variable repair parameter of the overlay repair parameter set.

[0056] For example, when the interpass temperature is 50℃, the first maximum penetration value in the first repair result corresponding thereto is 1.00mm; when the interpass temperature is 250℃, the first maximum penetration value in the first repair result corresponding thereto is 1.53mm; if the preset penetration threshold value is set to 1.11mm, 50℃ is recorded as the target interpass temperature.

[0057] In an embodiment, the overlay repair result further includes a second repair result; and the overlay operation on the simulation surface of the BOSS head simulation pipe according to the overlay repair parameter to obtain the overlay repair result corresponding to each set of overlay repair parameters includes:

[0058] When the variable repair parameter of the overlay repair parameter set is the welding mode, and the fixed repair parameter is the interpass temperature, the internal medium and the welding speed, the overlay operation is performed on the simulation surface of the BOSS head simulation pipe according to the overlay repair parameter, and the second repair result corresponding to each set of overlay repair parameters in the overlay repair parameter set is determined by the metallographic observation device; the welding mode includes the drag welding mode and the oscillation welding mode;

[0059] Understandably, the welding oscillation amplitude of the drag welding mode is smaller than that of the oscillation welding mode, so that different welding modes of the preset welding equipment will also produce different overlay repair results. Specifically, when the variable repair parameter of the overlay repair parameter set is the welding mode, and the fixed repair parameter is the interpass temperature, the internal medium and the welding speed, that is, the overlay repair parameter set includes two sets of overlay repair parameters, the welding mode in one set of overlay repair parameters is the drag welding mode, and the welding mode in the other set of overlay repair parameters is the oscillation welding mode, and other parameters are the same, and then the overlay operation is performed on the simulation surface of the BOSS head simulation pipe according to the overlay repair parameter, and the second repair result corresponding to each set of overlay repair parameters in the overlay repair parameter set is determined by the metallographic observation device.

[0060] The optimal repair parameter corresponding to the variable repair parameter of the overlay repair parameter set is determined from all the overlay repair results corresponding to the same overlay repair parameter set.

[0061] obtaining a second maximum penetration value in a second repair result corresponding to each set of the surfacing repair parameters in the set of surfacing repair parameters;

[0062] record the minimum second maximum penetration value corresponding to the drag welding mode or the weaving welding mode as the optimal repair parameter corresponding to the variable repair parameter of the set of surfacing repair parameters.

[0063] Specifically, when the variable repair parameter of the set of surfacing repair parameters is the welding mode, the fixed repair parameter is the interpass temperature, the internal medium, and the welding speed, the simulated surface of the BOSS head simulated pipe is surfacing operated according to the surfacing repair parameters, and the second repair result corresponding to each set of the surfacing repair parameters in the set of surfacing repair parameters is determined by the metallographic observation equipment, the second maximum penetration value in the second repair result corresponding to the drag welding mode is obtained, the second maximum penetration value in the second repair result corresponding to the weaving welding mode is obtained, and the minimum second maximum penetration value corresponding to the drag welding mode or the weaving welding mode is recorded as the optimal repair parameter corresponding to the variable repair parameter of the set of surfacing repair parameters. For example, when the welding mode is the drag welding mode, the second maximum penetration value is 0.89 mm, and when the welding mode is the weaving welding mode, the second maximum penetration value is 1.11 mm, it is indicated that the surfacing repair effect of the drag welding mode is better, and then the drag welding mode is recorded as the optimal repair parameter of the welding mode.

[0064] In an embodiment, the surfacing repair result further includes a third repair result; the surfacing operation of the simulated surface of the BOSS head simulated pipe according to the surfacing repair parameters to obtain the surfacing repair result corresponding to each set of the surfacing repair parameters includes:

[0065] when the variable repair parameter of the set of surfacing repair parameters is the internal medium, the fixed repair parameter is the interpass temperature, the welding mode, and the welding speed, the simulated surface of the BOSS head simulated pipe is surfacing operated according to the surfacing repair parameters, and the third repair result corresponding to each set of the surfacing repair parameters in the set of surfacing repair parameters is determined by the metallographic observation equipment; the internal medium includes the anhydrous medium and the aqueous medium;

[0066] It can be understood that the water-free medium refers to not injecting the water medium in the simulation pipe fitting, and the water medium refers to injecting the water medium in the simulation pipe fitting. Specifically, when the variable repair parameter of the set of hardfacing repair parameters is the internal medium, and the fixed repair parameter is the interpass temperature, the welding method and the welding speed, that is, the internal medium in one group of hardfacing repair parameters is the water-free medium, the internal medium in another group of hardfacing repair parameters is the water medium, and other parameters in the two groups of hardfacing repair parameters are the same, then the simulation surface of the BOSS head simulation pipe fitting is subjected to the hardfacing operation according to the hardfacing repair parameters, and the third repair result corresponding to each group of hardfacing repair parameters in the set of hardfacing repair parameters is determined by the metallographic observation equipment.

[0067] The optimal repair parameter corresponding to the variable repair parameter of the set of hardfacing repair parameters is determined from all the hardfacing repair results corresponding to the same set of hardfacing repair parameters, and includes:

[0068] The third maximum penetration value in the third repair result corresponding to each group of hardfacing repair parameters in the set of hardfacing repair parameters is obtained.

[0069] The water-free medium or the water medium corresponding to the smallest third maximum penetration value is recorded as the optimal repair parameter corresponding to the variable repair parameter of the set of hardfacing repair parameters.

[0070] Specifically, when the variable repair parameter of the set of hardfacing repair parameters is the internal medium, and the fixed repair parameter is the interpass temperature, the welding method and the welding speed, the simulation surface of the BOSS head simulation pipe fitting is subjected to the hardfacing operation according to the hardfacing repair parameters, the third repair result corresponding to each group of hardfacing repair parameters in the set of hardfacing repair parameters is determined by the metallographic observation equipment, the third maximum penetration value corresponding to the water-free medium is obtained, the third maximum penetration value corresponding to the water medium is obtained, and the water-free medium or the water medium corresponding to the smallest third maximum penetration value is recorded as the optimal repair parameter corresponding to the variable repair parameter of the set of hardfacing repair parameters.

[0071] Further, in this embodiment, the variable repair parameter can also be set as the internal medium and the welding method, that is, the internal medium and the welding method in the set of hardfacing repair parameters are different, and other parameters are the same; for example, it is assumed that the internal medium is the water medium, and the welding method is the drag welding method, the corresponding third maximum penetration value is 0.89 mm, the internal medium is the water-free medium, and the welding method is the oscillation welding method, the corresponding third maximum penetration is 1.11 mm, and the like, then it can be determined that the internal medium is the water medium, and the welding method is the drag welding method as the optimal repair parameter.

[0072] In an embodiment, the overlay repair result further comprises a fourth repair result; and the overlay operation on the simulated surface of the BOSS head simulated pipe according to the overlay repair parameters to obtain the overlay repair result corresponding to each set of the overlay repair parameters comprises:

[0073] When the variable repair parameter of the set of overlay repair parameters is the welding speed, and the fixed repair parameters are the interpass temperature, the welding mode, and the internal medium, the overlay operation on the simulated surface of the BOSS head simulated pipe according to the overlay repair parameters is performed, and the fourth repair result corresponding to each set of the overlay repair parameters in the set of overlay repair parameters is determined by a metallographic observation device; the welding speed range is 20 mm / min to 40 mm / min.

[0074] Specifically, when the variable repair parameter of the set of overlay repair parameters is the welding speed, and the fixed repair parameters are the interpass temperature, the welding mode, and the internal medium, that is, the welding speed between each set of overlay repair parameters is different, and the welding speed range is 20 mm / min to 40 mm / min, the overlay operation on the simulated surface of the BOSS head simulated pipe according to the overlay repair parameters is performed, and the fourth repair result corresponding to each set of the overlay repair parameters in the set of overlay repair parameters is determined by a metallographic observation device.

[0075] The optimal repair parameter corresponding to the variable repair parameter of the set of overlay repair parameters is determined from all the overlay repair results corresponding to the same set of overlay repair parameters, comprising:

[0076] The fourth maximum penetration value in the fourth repair result corresponding to each set of the overlay repair parameters in the set of overlay repair parameters is obtained.

[0077] Specifically, when the variable repair parameter of the set of overlay repair parameters is the welding speed, and the fixed repair parameters are the interpass temperature, the welding mode, and the internal medium, that is, the welding speed between each set of overlay repair parameters is different, and the welding speed range is 20 mm / min to 40 mm / min, the overlay operation on the simulated surface of the BOSS head simulated pipe according to the overlay repair parameters is performed, and the fourth repair result corresponding to each set of the overlay repair parameters in the set of overlay repair parameters is determined by a metallographic observation device.

[0078] The fourth maximum penetration value in the fourth repair result corresponding to each set of the overlay repair parameters in the set of overlay repair parameters is obtained. The welding speed corresponding to the fourth maximum penetration value less than or equal to the preset penetration threshold value is recorded as the target welding speed.

[0079] determining a welding speed range according to each target welding speed, and recording the welding speed range as the optimal repair parameter corresponding to the variable repair parameter of the hardfacing repair parameter set.

[0080] Specifically, after obtaining the fourth maximum penetration value in the fourth repair result corresponding to each group of hardfacing repair parameters in the hardfacing repair parameter set, comparing each fourth maximum penetration value with a preset penetration threshold, recording the welding speed corresponding to the fourth maximum penetration value less than or equal to the preset penetration threshold as a target welding speed, and determining a welding speed range according to the minimum value and the maximum value in each target welding speed, recording the welding speed range as the optimal repair parameter corresponding to the variable repair parameter of the hardfacing repair parameter set.

[0081] Exemplarily, when the welding speed is 20 mm / min, the fourth maximum penetration value in the fourth repair result corresponding thereto is 1.02 mm; when the welding speed is 40 mm / min, the first maximum penetration value in the first repair result corresponding thereto is 0.73 mm; if the preset penetration threshold is set to 1.00 mm, 40 mm / min is recorded as the target welding speed.

[0082] It should be understood that the size of the serial number of each step in the above-mentioned embodiments does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0083] In an embodiment, a hardfacing repair parameter determination system for a BOSS head of a nuclear power plant is provided, which comprises a controller for executing the hardfacing repair parameter determination method for a BOSS head of a nuclear power plant in the above-mentioned embodiments.

[0084] In an embodiment, a computer device is provided, which can be a server, and its internal structure diagram can be as shown in Figure 3 The computer device comprises a processor, a memory, a network interface and a database connected through a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the data used by the hardfacing repair parameter determination method for a BOSS head of a nuclear power plant in the above-mentioned embodiments. The network interface of the computer device is used to communicate with external terminals through network connection. The computer program is executed by the processor to implement a hardfacing repair parameter determination method for a BOSS head of a nuclear power plant.

[0085] In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for determining the BOSS head overlay repair parameters of a nuclear power plant in the above embodiment when executing the computer program.

[0086] In one embodiment, a computer readable storage medium is provided, which stores a computer program, wherein the computer program is executable on a processor to implement the method for determining the BOSS head overlay repair parameters of a nuclear power plant in the above embodiment.

[0087] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0088] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, i.e. the internal structure of the device is divided into different functional units or modules to complete all or part of the above-mentioned functions.

[0089] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method for determining parameters for welding repair of BOSS head in nuclear power plants, characterized in that, The method comprises the following steps: receiving a surfacing repair instruction for repairing a preset surface of a nuclear power plant BOSS head; the surfacing repair instruction comprises a plurality of surfacing repair parameter sets, each of the surfacing repair parameter sets comprises a plurality of surfacing repair parameters, each of the surfacing repair parameters in the same surfacing repair parameter set comprises at least one fixed repair parameter and at least one variable repair parameter, the variable repair parameters in different surfacing repair parameter sets are different, the nuclear power plant BOSS head comprises a main pipe and a branch pipe connected to the main pipe at a preset angle, and the preset surface is a surface at a joint between the main pipe and the branch pipe; surfacing is performed on a simulation surface of a BOSS head simulation pipe according to the surfacing repair parameters, and a surfacing repair result corresponding to each of the surfacing repair parameters is obtained; the simulation surface is a surface on the BOSS head simulation pipe that is consistent with the size and material of the preset surface; each of the BOSS head simulation pipes is subjected to surfacing by one of the surfacing repair parameters and obtains a surfacing repair result; from all the surfacing repair results corresponding to the same surfacing repair parameter set, an optimal repair parameter corresponding to the variable repair parameter of the surfacing repair parameter set is determined; a target repair parameter is determined according to the optimal repair parameters corresponding to each of the surfacing repair parameter sets; the surfacing operation on the simulation surface of the BOSS head simulation pipe according to the surfacing repair parameters to obtain a surfacing repair result corresponding to each of the surfacing repair parameters comprises the following steps: controlling a preset surfacing processing device to weld a welding rod base layer on the simulation surface according to the surfacing repair parameters; the size of the welding rod base layer is a first preset length and a first preset width; controlling the preset surfacing processing device to weld a machining layer on the welding rod base layer; the size of the machining layer is a second preset length and a second preset width; the second preset length is equal to the first preset length; and the second preset width is smaller than the first preset width; controlling the preset surfacing processing device to weld a welding wire surfacing layer on the machining layer; the size of the welding wire surfacing layer is a third preset length and a third preset width; the third preset length is smaller than the first preset length; the third preset width is larger than the second preset width and smaller than the first preset width; a plurality of metallographic observation devices are arranged on the welding wire surfacing layer, and the surfacing repair result is determined by the metallographic observation devices.

2. The method of claim 1, wherein the BOSS head overlay repair parameter determination method of a nuclear power plant is characterized by, the welding rod base layer comprises a first welding rod base layer and a second welding rod base layer; the first welding rod base layer is welded on the nuclear power plant BOSS head; and the second welding rod base layer is welded on the first welding rod base layer; the welding wire surfacing layer comprises a first welding wire surfacing layer, a second welding wire surfacing layer, and a third welding wire surfacing layer; the first welding wire surfacing layer is welded on the machining layer; the second welding wire surfacing layer is welded on the first welding wire surfacing layer; and the third welding wire surfacing layer is welded on the second welding wire surfacing layer. The third preset length includes a first wire length corresponding to the first wire cladding layer, a second wire length corresponding to the second wire cladding layer, and a third wire length corresponding to the third wire cladding layer; the first wire length is greater than the second wire length, and the second wire length is greater than the third wire length; the first wire cladding layer, the second wire cladding layer, and the third wire cladding layer have the third preset width.

3. The method of claim 1, wherein the BOSS head overlay repair parameter determination method is characterized by, The fixed repair parameter and the variable repair parameter are at least one of interpass temperature, welding mode, internal medium, and welding speed; and the fixed repair parameter and the variable repair parameter in the same set of cladding repair parameters are different.

4. The method of claim 3, wherein the BOSS head overlay repair parameter determination method is for a nuclear power plant, The cladding repair result includes a first repair result; the cladding operation on the simulated surface of the BOSS head simulation pipe according to the cladding repair parameter obtains a cladding repair result corresponding to each set of cladding repair parameters, including: When the variable repair parameter of the cladding repair parameter set is the interpass temperature, and the fixed repair parameter is the welding mode, the internal medium, and the welding speed, the cladding operation on the simulated surface of the BOSS head simulation pipe according to the cladding repair parameter determines a first repair result corresponding to each set of cladding repair parameters in the cladding repair parameter set through a metallographic observation device; the interpass temperature ranges from 50°C to 250°C; Determining the optimal repair parameter corresponding to the variable repair parameter of the same cladding repair parameter set from all the cladding repair results corresponding to the cladding repair parameter set, including: Obtaining a first maximum penetration value in the first repair result corresponding to each set of cladding repair parameters in the cladding repair parameter set; Comparing each first maximum penetration value with a preset penetration threshold, and recording the interpass temperature corresponding to the first maximum penetration value less than or equal to the preset penetration threshold as a target interpass temperature; Determining an interpass temperature range according to each target interpass temperature, and recording the interpass temperature range as the optimal repair parameter corresponding to the variable repair parameter of the cladding repair parameter set.

5. The method of claim 3, wherein the BOSS head overlay repair parameter determination method of a nuclear power plant is characterized by, The cladding repair result also includes a second repair result; the cladding operation on the simulated surface of the BOSS head simulation pipe according to the cladding repair parameter obtains a cladding repair result corresponding to each set of cladding repair parameters, including: When the variable repair parameter of the cladding repair parameter set is the welding mode, and the fixed repair parameter is the interpass temperature, the internal medium, and the welding speed, the cladding operation on the simulated surface of the BOSS head simulation pipe according to the cladding repair parameter determines a second repair result corresponding to each set of cladding repair parameters in the cladding repair parameter set through a metallographic observation device; the welding mode includes a drag welding mode and a weaving welding mode; Determining the optimal repair parameter corresponding to the variable repair parameter of the same cladding repair parameter set from all the cladding repair results corresponding to the cladding repair parameter set, including: Obtain the second maximum penetration value from the second repair result corresponding to each group of weld overlay repair parameters in the weld overlay repair parameter set; The drag welding method or oscillating welding method corresponding to the smallest second maximum penetration value is recorded as the optimal repair parameter corresponding to the variable repair parameter in the set of weld overlay repair parameters.

6. The method of claim 3, wherein the BOSS head overlay repair parameter determination method of a nuclear power plant is characterized by, The weld overlay repair result also includes a third repair result; the step of performing weld overlay operation on the simulated surface of the BOSS head simulated pipe fitting according to the weld overlay repair parameters to obtain the weld overlay repair result corresponding to each set of the weld overlay repair parameters includes: When the variable repair parameter in the set of weld overlay repair parameters is the internal medium, and the fixed repair parameters are interpass temperature, welding method, and welding speed, weld overlay operation is performed on the simulated surface of the BOSS head simulated pipe fitting according to the weld overlay repair parameters. The third repair result corresponding to each set of weld overlay repair parameters in the set of weld overlay repair parameters is determined by metallographic observation equipment. The internal medium includes anhydrous medium and aqueous medium. The optimal repair parameter corresponding to the variable repair parameter of the same weld repair parameter set is determined from all weld repair results corresponding to the same weld repair parameter set, including: Obtain the third maximum penetration value in the third repair result corresponding to each group of weld overlay repair parameters in the set of weld overlay repair parameters; The anhydrous or aqueous medium corresponding to the smallest third maximum penetration value is recorded as the optimal repair parameter corresponding to the variable repair parameter in the set of weld overlay repair parameters.

7. The method of claim 3, wherein the BOSS head overlay repair parameter determination method of a nuclear power plant is characterized by, The weld overlay repair result also includes a fourth repair result; the step of performing weld overlay operation on the simulated surface of the BOSS head simulated pipe fitting according to the weld overlay repair parameters to obtain the weld overlay repair result corresponding to each set of weld overlay repair parameters includes: When the variable repair parameter in the set of weld overlay repair parameters is the welding speed, and the fixed repair parameters are the interpass temperature, welding method, and internal medium, weld overlay operation is performed on the simulated surface of the BOSS head simulated pipe fitting according to the weld overlay repair parameters. The fourth repair result corresponding to each set of weld overlay repair parameters in the set of weld overlay repair parameters is determined by metallographic observation equipment. The welding speed range is 20 mm / min to 40 mm / min. The optimal repair parameter corresponding to the variable repair parameter of the same weld repair parameter set is determined from all weld repair results corresponding to the same weld repair parameter set, including: Obtain the fourth maximum penetration value from the fourth repair result corresponding to each group of weld overlay repair parameters in the weld overlay repair parameter set; Each of the fourth maximum penetration values ​​is compared with a preset penetration threshold, and the welding speed corresponding to the fourth maximum penetration value that is less than or equal to the preset penetration threshold is recorded as the target welding speed. The welding speed range is determined based on each target welding speed, and the welding speed range is recorded as the optimal repair parameter corresponding to the variable repair parameter in the set of weld overlay repair parameters.

8. The method of claim 1, wherein, The central axis of the main pipe of the BOSS head of the nuclear power plant and the central axis of the branch pipe are on the same plane; the preset angle is an acute angle or a right angle.

9. A nuclear power plant BOSS head overlay repair parameter determination system characterized by, A controller for performing the method of determining repair parameters for a nuclear power plant BOSS head overlay weld as claimed in any one of claims 1 to 8.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor implements the method of determining repair parameters for a nuclear power plant BOSS head overlay weld as claimed in any one of claims 1 to 8 when executing the computer program.

11. A computer-readable storage medium storing a computer program, wherein the computer program comprises the following steps of: The computer program, which when executed by a processor implements the method of determining repair parameters for a nuclear power plant BOSS head overlay weld as claimed in any one of claims 1 to 8.

Images