A welding monitoring and measuring system and method for a nuclear power evaporator main pump casing

Abstract

The present invention discloses a welding monitoring and measuring system for a nuclear power evaporator main pump casing, comprising: a displacement sensing module, arranged on the main pump casing; an inclination sensing module, arranged on the main pump casing; a controller, a first input end connected to the output end of the displacement sensing module, and a second input end connected to the output end of the inclination sensing module; a monitoring and display module, an input end connected to the first output end of the controller; a data analysis module, an input end connected to the second output end of the controller; a welding arc starting module, an input end connected to the output end of the data analysis module, and an output end connected to the main pump casing. This invention solves the problems of low traditional welding efficiency and low welding measurement accuracy. Through an automated welding monitoring and measuring system, the deformation of the main pump casing during welding is accurately and real-time monitored, the change of the arc starting point is automatically displayed, and the adjustment of the welding position and the welding amount are guided, thereby improving welding accuracy and welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power evaporator welding, and in particular to a welding monitoring and measuring system and method for a pump casing of a nuclear power evaporator main pump. Background Art

[0002] The main pump casing is a nuclear-level equipment, used for direct welding with the steam generator (SG); the joint used for thick-walled welding of dissimilar rigid joints is a dissimilar metal welding joint with full penetration thickness of 156 mm.

[0003] The stainless steel on the main pump casing side and the nickel-based alloy on the pre-stack side of the SG outlet nozzle have low thermal conductivity and large thermal expansion coefficient, which leads to large and difficult to control deformation of the main pump casing during welding, causing the position tolerance of the main pump casing to exceed the tolerance, which is mainly manifested in: lateral shrinkage deformation of the main pump casing, causing the inclination of the main flange surface of the main pump casing and the vertical support reference on the SG, as well as longitudinal deformation in the welding direction, causing angular displacement of the main pump casing discharge nozzle.

[0004] During the dozens of days of welding process, the steam generator main pump casing must be deformed in real time during the welding process, and the welding process must be appropriately adjusted according to the deformation data to control the deformation of the main pump casing to ensure that the finished welded product meets the design requirements.

[0005] At present, the key point of the welding process for real-time monitoring of the welding process is to use a laser tracker to measure the position relationship of the reactor coolant pump (RCP) pump casing and manually formulate an adjustment plan. The measurement process takes up a lot of welding time, cannot be monitored in real time, and cannot ensure that the design requirements are always met during the welding process. Secondly, due to the limitations of on-site welding stations, the laser tracker needs to be measured by transferring stations and transferring benchmarks, which has a great impact on the measurement accuracy. Summary of the invention

[0006] The purpose of the present invention is to provide a welding monitoring and measuring system and method for the pump casing of the main pump of a nuclear power evaporator. This system and method are intended to solve the problems of low efficiency and low welding measurement accuracy of traditional welding. Through the automated welding monitoring and measuring system, the deformation of the main pump casing during welding can be accurately monitored in real time, the change of the arc starting point can be automatically displayed, and the adjustment of the welding position and the welding amount can be guided, so as to ensure that the deformation of the main pump casing is always controlled within a reasonable range during long-term welding, thereby improving welding accuracy and welding efficiency.

[0007] To achieve the above object, the present invention provides a welding monitoring and measuring system for a nuclear power evaporator main pump casing, comprising:

[0008] A displacement sensing module is provided on the pump housing of the main pump and is used to collect displacement information of the pump housing of the main pump;

[0009] The inclination sensor module is arranged on the pump housing of the main pump and is used to collect the inclination information of the pump housing of the main pump;

[0010] A controller, wherein a first input end is connected to an output end of a displacement sensing module, and a second input end is connected to an output end of an inclination sensing module, and performs real-time monitoring and control on displacement information and inclination information of a pump housing of a main pump to obtain monitoring data information;

[0011] A monitoring display module, the input end of which is connected to the first output end of the controller, and the monitoring data information is directly displayed through the monitoring display module, so that the staff can directly read the monitoring data information;

[0012] The data analysis module has an input end connected to the second output end of the controller, and performs welding analysis on the pump casing of the main pump according to the monitoring data information to obtain welding instructions;

[0013] The welding arc starting module has an input end connected to the output end of the data analysis module, and an output end connected to the welding port of the main pump casing. The main pump casing is welded according to the welding instruction to realize the welding monitoring and measurement of the nuclear power evaporator main pump casing.

[0014] Most preferably, the monitoring and measuring system further comprises an alarm module connected to the controller for real-time monitoring of monitoring data information of the pump casing of the main pump.

[0015] Most preferably, the data analysis module includes:

[0016] Parameter setting module, used for workers to manually set welding parameters;

[0017] The welding adjustment and analysis module has a first input end connected to the output end of the parameter setting module, and a second input end connected to the second output end of the controller. The welding parameters are adjusted in real time according to the monitoring data information of the controller to obtain welding instructions.

[0018] Most preferably, the monitoring data information includes: pitch angle information, yaw angle information, displacement information, arc starting point information and contraction amount information.

[0019] Most preferably, the displacement sensing module is a displacement sensor; there are several groups of displacement sensing modules, which are evenly distributed on the flange surface of the main pump casing along the circumference of the main pump casing.

[0020] Most preferably, the displacement sensing module is arranged on the pump casing of the main pump via a displacement sensor fixing fixture.

[0021] Most preferably, the inclination sensor module is arranged on the pump casing of the main pump via an inclination sensor fixing fixture.

[0022] Most preferably, the tilt sensing module is a tilt sensor.

[0023] The present invention also provides a method for monitoring and measuring the welding of a pump casing of a nuclear power evaporator main pump. The method is implemented based on the above-mentioned welding monitoring and measuring system for the pump casing of a nuclear power evaporator main pump. The method comprises the following steps:

[0024] Step 1: Install the displacement sensing module and the inclination sensing module on the pump housing of the main pump respectively, and collect the displacement information and inclination information of the pump housing of the main pump in real time;

[0025] Step 2: The collected displacement information and inclination angle information of the main pump casing are transmitted to the controller in real time for real-time monitoring and regulation to obtain monitoring data information, and the monitoring data information is divided into two paths;

[0026] Step 3: The first channel of monitoring data information is directly transmitted to the monitoring display module and is directly displayed through the monitoring display module, so that the staff can directly read it;

[0027] Step 4: The second monitoring data information is transmitted to the data analysis module, and the welding analysis of the main pump casing is performed according to the second monitoring data information to obtain the welding instruction;

[0028] Step 5: Transmit the welding instruction to the welding arc starting module, perform welding processing on the pump casing of the main pump, and realize the welding monitoring and measurement of the pump casing of the nuclear power evaporator main pump.

[0029] Most preferably, the welding analysis further comprises the following steps:

[0030] Step 4.1: The staff manually sets the welding parameters through the parameter setting module;

[0031] Step 4.2: The second monitoring data information and welding parameters are transmitted to the welding adjustment analysis module, and the welding parameters are adjusted in real time according to the second monitoring data information to obtain welding instructions.

[0032] The use of this invention solves the problems of low traditional welding efficiency and low welding measurement accuracy. Through the automated welding monitoring and measurement system, the deformation of the main pump casing during welding can be accurately monitored in real time, the changes in the arc starting point can be automatically displayed, and the adjustment of the welding position and the welding amount can be guided, ensuring that the deformation of the main pump casing is always controlled within a reasonable range during long-term welding, thereby improving welding accuracy and efficiency.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The welding monitoring and measuring system provided by the present invention can accurately monitor the deformation of the main pump casing during welding in real time, automatically display the changes in the arc starting point, and guide the adjustment of the welding position and the welding amount, ensuring that the deformation of the main pump casing is always controlled within a reasonable range during long-term welding.

[0035] 2. The welding monitoring and measuring system provided by the present invention can conveniently, efficiently and accurately monitor and measure the positional relationship between the outlet pipe of the nuclear power steam generator and the main pump casing during welding; it can measure and monitor in real time without occupying additional welding time; the data detected by the monitoring system can guide the welding position and welding amount in real time; it can issue prompts in time when the warning value is exceeded; the data is saved in real time to provide complete technical analysis data.

[0036] 3. The welding monitoring and measuring system provided by the present invention automatically analyzes and calculates based on the welding adjustment analysis module, and automatically adjusts the welding parameters, thereby improving the welding efficiency and accuracy.

[0037] 4. The welding monitoring and measuring system provided by the present invention performs welding monitoring and welding measurement together, which saves welding measurement time and improves welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of the welding monitoring and measuring system provided by the present invention;

[0039] Figure 2 This is a schematic diagram of the relationship between the main pump housing, the displacement sensing module and the inclination sensing module provided by the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the protection scope of the present invention.

[0041] The present invention relates to a welding monitoring and measuring system for a nuclear power evaporator main pump casing. The welding time between a steam generator outlet pipe and the main pump casing K is as long as two months. During the welding process, the shrinkage at the welding point between the main pump casing K and the steam generator is large. Real-time monitoring of the welding process is required to ensure the size requirements of the welded product.

[0042] Among them, Figure 1 As shown, it includes: a displacement sensing module 1, a tilt sensing module 3, a controller 5, a monitoring and display module 6, a data analysis module 7 and a welding arc starting module 8.

[0043] like Figure 2 As shown, the displacement sensing module 1 is arranged on the flange surface of the main pump casing K along the circumference of the main pump casing K, and is used to collect the displacement information of the main pump casing.

[0044] In this embodiment, if Figure 2 As shown, there are several groups of displacement sensing modules 1, which are evenly distributed on the flange surface of the main pump casing K along the circumference of the main pump casing K.

[0045] In this embodiment, the displacement sensing module 1 is arranged on the pump housing K of the main pump through the displacement sensor fixing fixture 2; the displacement sensing module 1 is a displacement sensor; there are four displacement sensors 1; in this embodiment, the displacement sensor fixing fixture 2 is a gantry bracket.

[0046] like Figure 2 As shown, the inclination sensor module 3 is arranged on the pump housing K of the main pump and is used to collect the inclination information of the pump housing K of the main pump.

[0047] In this embodiment, the inclination sensor module 3 is arranged at the threaded hole position of the main pump casing K; the inclination sensor module 3 is arranged on the main pump casing K through the inclination sensor fixing tool 4; the inclination sensor module 3 is an inclination sensor.

[0048] like Figure 1 As shown, the controller 5 has a first input end connected to the output end of the displacement sensing module 1, and a second input end connected to the output end of the inclination sensing module 3, so as to monitor and control the displacement information and inclination information of the main pump housing K in real time and obtain monitoring data information.

[0049] The monitoring display module 6 has an input end connected to the first output end of the controller 5 , and the monitoring data information is directly displayed through the monitoring display module 6 , so that the staff can directly read the monitoring data information.

[0050] In this embodiment, the monitoring display module 6 is a display; the monitoring data information includes: pitch angle information, yaw angle information, displacement information, arc starting point information and contraction amount information.

[0051] Among them, in this embodiment, the arc starting point information is calculated based on four displacement sensors 1: when only one data among the four displacement sensors is the maximum value, the position point of the displacement sensor is the welding arc starting point; when there are two data of the same size as the maximum value among the four displacement sensors, the midpoint of the two displacement sensor position points is selected as the welding arc starting point.

[0052] The data analysis module 7 has an input end connected to the second output end of the controller 5, and analyzes the welding of the main pump casing K according to the monitoring data information to obtain a welding instruction.

[0053] Among them, Figure 1 As shown, the data analysis module 7 includes: a parameter setting module 701 and a welding adjustment analysis module 702 .

[0054] The parameter setting module 701 is used for the staff to manually set the welding parameters; wherein, in this embodiment, the manually set welding parameters include: the initial position of the main pump casing K, and the measurement and monitoring tolerance requirements of the main pump casing K.

[0055] The welding adjustment and analysis module 702 has a first input end connected to the output end of the parameter setting module 701 and a second input end connected to the second output end of the controller 5. The welding parameters are adjusted in real time according to the monitoring data information of the controller 5 to obtain welding instructions.

[0056] The input end of the welding arc starting module 8 is connected to the output end of the data analysis module 7, and the output end is connected to the welding port of the main pump casing K. The main pump casing K is welded according to the welding instruction to realize the welding monitoring and measurement of the nuclear power evaporator main pump casing K.

[0057] In this embodiment, the modules in the welding monitoring and measuring system are connected via data lines.

[0058] like Figure 1 As shown, the monitoring and measuring system further includes an alarm module 9 connected to the controller 5 for monitoring the monitoring data information of the pump housing K of the main pump in real time.

[0059] In this embodiment, an alarm tolerance band is set in the alarm module 9; the alarm tolerance band satisfies: the roll angle is 20°±0.5°, and the pitch angle is greater than 0.5°.

[0060] The present invention also provides a method for monitoring and measuring the welding of a pump casing of a nuclear power evaporator main pump. The method is implemented based on the above-mentioned welding monitoring and measuring system for the pump casing of a nuclear power evaporator main pump. The method comprises the following steps:

[0061] Step 1: The displacement sensing module 1 and the inclination sensing module 3 are respectively mounted on the pump housing K of the main pump through the displacement sensor fixing fixture 2 and the inclination sensor fixing fixture 4, and the displacement information and inclination information of the pump housing K of the main pump are collected in real time;

[0062] Step 2: The collected displacement information and inclination angle information of the pump housing K of the main pump are transmitted to the controller 5 in real time for real-time monitoring and regulation to obtain monitoring data information, and the monitoring data information is divided into two paths;

[0063] Step 3: The first monitoring data information is directly transmitted to the monitoring display module 6 and is directly displayed by the monitoring display module 6, so that the staff can read it directly;

[0064] Step 4: The second monitoring data information is transmitted to the data analysis module 7. According to the second monitoring data information, the welding analysis of the main pump casing K is performed to obtain the welding instruction; wherein the welding analysis also includes the following steps:

[0065] Step 4.1: The staff manually sets the welding parameters through the parameter setting module 701;

[0066] Step 4.2: The second monitoring data information and welding parameters are transmitted to the welding adjustment analysis module 702, and the welding parameters are adjusted in real time according to the second monitoring data information to obtain welding instructions.

[0067] Step 5: Transmit the welding instruction to the welding arc starting module 8, perform welding processing on the main pump casing K, and realize welding monitoring and measurement of the nuclear power evaporator main pump casing K.

[0068] Working principle of the present invention:

[0069] The displacement sensing module and the inclination sensing module are respectively installed on the pump casing of the main pump to collect the displacement information and inclination information of the pump casing of the main pump in real time; the collected displacement information and inclination information of the pump casing of the main pump are transmitted to the controller in real time for real-time monitoring and regulation to obtain monitoring data information, and the monitoring data information is divided into two paths; the first path of monitoring data information is directly transmitted to the monitoring display module and directly displayed through the monitoring display module to facilitate direct reading by the staff; the second path of monitoring data information is transmitted to the data analysis module, and the welding analysis of the pump casing of the main pump is performed according to the second path of monitoring data information to obtain the welding instruction; the welding instruction is transmitted to the welding arc starting module to weld the pump casing of the main pump to realize the welding monitoring and measurement of the pump casing of the nuclear power evaporator main pump.

[0070] In summary, the welding monitoring and measuring system and method of the nuclear power evaporator main pump casing of the present invention solves the problems of low traditional welding efficiency and low welding measurement accuracy. Through the automated welding monitoring and measuring system, the deformation of the main pump casing during welding can be accurately monitored in real time, the changes in the arc starting point can be automatically displayed, and the adjustment of the welding position and the welding amount can be guided, thereby ensuring that the deformation of the main pump casing is always controlled within a reasonable range during long-term welding, thereby improving welding accuracy and welding efficiency.

[0071] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A welding monitoring and measuring system for the pump casing of a nuclear power evaporator main pump, characterized in that: include: A displacement sensing module is provided on the pump housing of the main pump and is used to collect displacement information of the pump housing of the main pump; The inclination sensor module is arranged on the pump housing of the main pump and is used to collect the inclination information of the pump housing of the main pump; A controller, wherein a first input end of the controller is connected to an output end of the displacement sensing module, and a second input end of the controller is connected to an output end of the inclination sensing module, and the displacement information and the inclination information are monitored and regulated in real time to obtain monitoring data information; A monitoring display module, the input end of which is connected to the first output end of the controller, and the monitoring data information is directly displayed through the monitoring display module, so that the staff can directly read the monitoring data information; A data analysis module, the input end of which is connected to the second output end of the controller, performs welding analysis on the pump casing of the main pump according to the monitoring data information to obtain welding instructions; A welding arc starting module, the input end of which is connected to the output end of the data analysis module, and the output end of which is connected to the welding port of the main pump casing, performs welding processing on the main pump casing according to the welding instruction, and realizes welding monitoring and measurement of the nuclear power evaporator main pump casing; The data analysis module includes: Parameter setting module, used for workers to manually set welding parameters; A welding adjustment and analysis module, wherein a first input end of the welding adjustment and analysis module is connected to an output end of the parameter setting module, and a second input end of the welding adjustment and analysis module is connected to a second output end of the controller, and the welding parameters are adjusted in real time according to monitoring data information of the controller to obtain welding instructions; The monitoring data information includes: Pitch angle information, yaw angle information, displacement information, arc starting point information and contraction amount information.

2. The welding monitoring and measuring system for the pump casing of the nuclear power evaporator main pump according to claim 1 is characterized in that: The monitoring and measuring system also includes an alarm module, which is connected to the controller and is used to monitor the monitoring data information of the pump casing of the main pump in real time.

3. The welding monitoring and measuring system for the pump casing of the nuclear power evaporator main pump according to claim 1 is characterized in that: The displacement sensing module is a displacement sensor; there are several groups of displacement sensing modules, which are evenly distributed on the flange surface of the main pump casing along the circumference of the main pump casing.

4. The welding monitoring and measuring system for the pump casing of the nuclear power evaporator main pump according to claim 1 is characterized in that: The displacement sensor module is arranged on the pump housing of the main pump through a displacement sensor fixing device.

5. The welding monitoring and measuring system for the pump casing of the nuclear power evaporator main pump according to claim 1, characterized in that: The inclination sensor module is arranged on the pump housing of the main pump through an inclination sensor fixing device.

6. The welding monitoring and measuring system for the pump casing of the nuclear power evaporator main pump according to claim 1, characterized in that: The tilt sensing module is a tilt sensor.

7. A welding monitoring and measuring method for a nuclear power evaporator main pump casing, the welding monitoring and measuring method is implemented based on the welding monitoring and measuring system for a nuclear power evaporator main pump casing according to any one of claims 1 to 6, and the welding monitoring and measuring method comprises the following steps: Step 1: Install the displacement sensing module and the inclination sensing module on the pump housing of the main pump respectively, and collect the displacement information and inclination information of the pump housing of the main pump in real time; Step 2: Transmitting the displacement information and the inclination angle information to the controller in real time, performing real-time monitoring and regulation, obtaining monitoring data information, and dividing the monitoring data information into two paths; Step 3: The first channel of monitoring data information is directly transmitted to the monitoring display module and is directly displayed through the monitoring display module, so that the staff can directly read it; Step 4: The second monitoring data information is transmitted to the data analysis module, and the welding analysis of the main pump casing is performed according to the second monitoring data information to obtain the welding instruction; Step 5: Transmit the welding instruction to the welding arc starting module, perform welding processing on the pump casing of the main pump, and realize welding monitoring and measurement of the pump casing of the nuclear power evaporator main pump.

8. The welding monitoring and measuring method for the pump casing of the nuclear power evaporator main pump as claimed in claim 7 is characterized in that: The welding analysis further comprises the following steps: Step 4.1: The staff manually sets the welding parameters through the parameter setting module; Step 4.2: The second monitoring data information and the welding parameters are transmitted to the welding adjustment and analysis module, and the welding parameters are adjusted in real time according to the second monitoring data information to obtain the welding instructions.

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