CN111220041A - Nuclear power plant primary loop system installation process attitude monitoring system and method - Google Patents
Nuclear power plant primary loop system installation process attitude monitoring system and method Download PDFInfo
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- CN111220041A CN111220041A CN201911263190.5A CN201911263190A CN111220041A CN 111220041 A CN111220041 A CN 111220041A CN 201911263190 A CN201911263190 A CN 201911263190A CN 111220041 A CN111220041 A CN 111220041A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
The invention relates to a system and a method for monitoring the installation process attitude of a loop system of a nuclear power plant, which adopts a positioner, a signal generator, a data monitoring component and a controller to determine a datum point and a positioning point by establishing a standard model and a standard monitoring network; arranging a signal generator on the datum point, arranging a locator on the locating point, and establishing a space monitoring network to enable the measuring points of the two networks to be overlapped and connected through signals; after welding, positioning each measuring point, sending data to a controller, and establishing a process model; and comparing the process model with the standard model to reflect the attitude change of the loop system. The invention is simple, efficient and visual, and reflects the absolute change of the equipment attitude and the relative change of the equipment attitude in the installation/welding process of the system in real time; the installation is carried out once, reading is not required to be checked manually in the process, automatic calculation and modeling are carried out, and calculation time and labor are saved; the measurement precision is high, data can be obtained instantly, and software records can reflect the process change trend of any point.
Description
Technical Field
The invention relates to the field of nuclear power equipment, in particular to a system and a method for monitoring the installation process attitude of a loop system of a nuclear power plant.
Background
A nuclear power plant loop system is the core of whole nuclear power plant, and nuclear reactor fuel carries out controllable chain reaction release heat in a loop system reactor pressure vessel, and a loop system medium circulation flow takes the heat to carry out the heat exchange in the steam generator, and the stabiliser guarantees that medium pressure is in safety range in the system, and the main pump guarantees that system medium circulation flows, and trunk line and surge pipe couple together each equipment and form the return circuit.
The primary loop system equipment of the nuclear power plant is large in size and heavy in mass, and for a certain three-generation nuclear power example, a main pipeline of the nuclear power plant is 5.7m in single-section straight line length, 94mm in wall thickness and 13t heavy, and is difficult to adjust in posture. The system installation generally is that after these equipment are put in place, main pipeline and surge pipe and these equipment welded connection together are put into place to reactor pressure vessel, steam generator, stabiliser, main pump, and steam generator generally has 3, and every steam generator all has two main pipeline welding seams of hot leg import, cold leg export, and corresponding reactor pressure vessel then has 6 welding seams and links to each other with the main pipeline. Because the main pipeline and the surge pipe are thick in wall thickness and made of austenitic stainless steel, great welding deformation can be generated during installation welding. This causes a change in the absolute position of the system devices and the relative position between the devices, and once a change in position occurs, the attitude adjustment work becomes difficult.
At present, a loop system of a nuclear power plant is installed, and in a main pipeline and a corrugated pipe welding process, dial indicators are erected on the two sides of a welding seam all around before welding, and in the welding process, the reading of the dial indicators is checked and recorded manually at regular time, and the deformation condition is comprehensively judged according to direction data around the welding seam.
Usually, a loop main device generally has two or more pipe interfaces for the inlet and outlet of a system medium, when the whole loop is installed and welded, a plurality of welding seams are welded at the same time, and the dial indicator reading of a single welding seam can only judge the change condition of the periphery of the welding seam, the position change condition of a device area containing two or more welding seams cannot be judged, and the change condition of the posture of a device body cannot be judged.
Welding deformation causes the dial indicator reading to change, the field is at present regularly to observe and record data, every welding seam both sides all have four at least dial indicators, have a plurality of craters to weld simultaneously in the installation welding process moreover, personnel's reading, record are gathered after returning again and are calculated the difference and change, such operating efficiency is very slow.
In the installation process of a loop system, a plurality of welding lines are often welded simultaneously, only a single welding line part can be seen in the existing method for reading the welding line dial indicator, the posture change of the whole system equipment can be judged only by integrally fitting data, a large amount of time is needed, and the method is unrealistic for the construction period.
When a loop pipeline welds, used position detects percentage table quantity is many, just needs more manual work to observe the reading, gathers after the reading is accomplished again, gathers single welding seam variable quantity earlier, gathers the variable quantity on same pipe or the equipment again, and it is more to need record personnel and data processing personnel.
Therefore, the method can only reflect the posture change of the positions at two sides of the welding line, and when more than two craters are welded on the equipment at the same time, the method cannot reflect the whole posture change of the equipment; the efficiency is low, the change condition cannot be reflected in real time, and the change of the measuring point position can be judged only by calculating and comparing after the reading is finished; when a plurality of welding seams are welded simultaneously in the installation process, the relative position change of the whole system cannot be reflected; a plurality of workers are needed, when a plurality of craters are welded simultaneously, a plurality of recording personnel are needed to observe the reading of the dial indicator, and a plurality of personnel process data; the change situation of the position of the equipment body and the change situation of the relative position of the system equipment cannot be accurately judged in real time.
Disclosure of Invention
The invention aims to provide an installation process attitude monitoring system of a primary loop system of a nuclear power plant, which is suitable for being used in nuclear energy and large key facility installation during construction and installation of the nuclear power plant.
In order to achieve the purpose, the invention adopts the technical scheme that:
a nuclear power plant primary loop system installation process attitude monitoring system includes:
a positioner: the system comprises a loop system, a positioning device and a control device, wherein the loop system is used for positioning the actual position point of each device in the loop system and sending a positioning signal;
a signal generator: the positioning device is connected with the positioning devices through signals and used for receiving positioning signals sent by the positioning devices and sending the positioning signals;
a data monitoring component: the device is used for monitoring the radial offset of the pipeline at the position of the welding line and sending monitoring data;
a controller: the positioning signal generator is used for receiving the positioning signal sent by the signal generator, receiving the monitoring data sent by the data monitoring component, and carrying out data analysis, modeling and attitude monitoring on the positioning signal and the monitoring data.
Preferably, the locator laser locator.
Preferably, the signal generator is a laser generator.
Preferably, the data monitoring component is a wireless communication type digital dial indicator. The wireless communication type digital dial indicator regularly acquires the reading of the measuring point, sends the monitoring data to the controller, and automatically calculates the variation by the controller, so that the change condition of the welding area can be monitored in real time.
Preferably, the signal generator is arranged on the axis of the reactor pressure vessel stack.
Preferably, each of the equipment in the loop system includes a reactor pressure vessel stack, a steam generator, and a main pump.
The invention further aims to provide a method for monitoring the installation process attitude of the primary loop system of the nuclear power plant.
In order to achieve the purpose, the invention adopts the technical scheme that:
a nuclear power plant primary loop system installation process attitude monitoring method comprises the following steps:
preparing a positioner, a signal generator, a data monitoring component and a controller, wherein the controller establishes a standard model according to the design size of a loop system and establishes a standard monitoring network on the basis of the standard model;
the standard monitoring network takes a certain point on the axis of the reactor pressure vessel as a reference point, the equipment surface of a loop system as a positioning point, a data monitoring part is arranged at a welding line, and a controller calculates the spatial relationship between the measuring points in a standard model;
arranging a signal generator on the datum point, arranging a positioner on a positioning point of equipment of a loop system, establishing a space monitoring network, enabling each measuring point in the space monitoring network to coincide with each measuring point in a standard monitoring network, carrying out signal connection on the positioner and the signal generator, and carrying out signal connection on the signal generator and a data monitoring component and a controller;
after welding is started, a positioner and a data monitoring component monitor positioning signals and monitoring data of each measuring point and send the positioning signals and the monitoring data to a controller, a space monitoring network receives the positioning signals in real time, the monitoring data are converted into digital signals, and a process model is established through the controller;
the controller compares the process model with the standard model to reflect the attitude change of the loop system.
Preferably, the centre point of the signal generator coincides with a reference point on the axis of the reactor pressure vessel.
Preferably, the locator is disposed on the reactor pressure vessel stack, the steam generator, and the primary pump surface, which includes the periphery, the top, and the bottom.
Preferably, the data monitoring components are arranged on two sides and/or the periphery of the welding seam.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
the method is simple, efficient and visual, and can reflect absolute change of equipment postures and relative change between system equipment in the installation/welding process of the loop system in real time; the installation is completed once, manual checking and reading are not needed in the process, data are automatically calculated and modeled by computer software, and a large amount of calculation time and manpower are saved; the laser measurement precision is high, wireless signal transmission can obtain data in real time, and software records can reflect the process change trend of any point.
Drawings
Fig. 1 is a schematic monitoring diagram of the present embodiment.
Fig. 2 is a schematic diagram of an arrangement of a data monitoring unit in the present embodiment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows an installation process attitude monitoring system for a loop system of a nuclear power plant, which includes a positioner 1, a signal generator 2, a data monitoring unit 3 and a controller 4. Wherein:
the positioner 1 adopts a laser positioner and is used for positioning the actual position points of all devices in a loop system and sending positioning signals. The signal generator 2 is connected with the locators 1 through signals by adopting a laser generator, and is used for receiving the positioning signals sent by the locators 1 and sending the positioning signals. The data monitoring part 3 is a wireless communication type digital dial indicator and is used for monitoring the radial change of the pipe at the position of a welding seam, specifically the radial offset of the pipeline, and sending monitoring data. The controller 4 is used for receiving the positioning signals sent by the signal generator, receiving the monitoring data sent by the data monitoring component, and performing data analysis, modeling and attitude monitoring on the positioning signals and the monitoring data.
The following describes in detail the method of monitoring using the present detection system: the method comprises the following steps:
the controller 4 establishes a standard model according to the design size of a loop system, and establishes a standard monitoring network based on the standard model; the standard monitoring network takes a certain point on the axis of the reactor pressure vessel 5 as a datum point, the equipment surface of a loop system is a positioning point, the equipment specifically comprises the reactor pressure vessel 5, a steam generator 6 and a main pump 7, the surface comprises the periphery, the top and the bottom, data monitoring parts 3 are arranged on two sides and the periphery of a welding line, and the controller 4 calculates the spatial relationship among the measuring points in a standard model; arranging a signal generator 2 on a reference point, wherein the center point of the signal generator 2 coincides with the reference point on the axis of a reactor pressure vessel 5, arranging a positioner 1 on a positioning point of equipment of a loop system, establishing a space monitoring network, enabling each measuring point in the space monitoring network to coincide with each measuring point in a standard monitoring network, carrying out signal connection on the positioner 1 and the signal generator 2, and connecting the signal generator 2, a data monitoring component 3 and a controller 4 through signals; after welding is started, the positioner 1 and the data monitoring part 3 monitor positioning signals and monitoring data of various measuring points and send the positioning signals and the monitoring data to the controller 4, and the space monitoring network receives the positioning signals and the monitoring data in real time, converts the positioning signals and the monitoring data into digital signals through the controller 4 and establishes a process model; the controller 4 compares the process model with the standard model to reflect the attitude change of the loop system.
According to the invention, the distance between the positioner and the reference point is changed, the measurement precision is high, and the measurement result is converted into a wireless digital signal and transmitted to the controller, so that the attitude change of the local area or the whole of the detection device is detected in the welding process. And fitting a current system process model according to the size information fed back from the equipment and the size information fed back from the two sides of the welding line, and comparing the current system process model with the standard model, so as to reflect the relative position change of the whole system. The distance change conditions of the measuring points are all converted into digital signals, the digital signals are collected and processed by the controller, manual work is needed only when the position measuring points are installed and disassembled, and in the whole welding process, a person does not need to observe readings on site, and only one or two computer operators are needed, so that the labor cost is greatly saved.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a nuclear power plant's a loop system installation gesture monitoring system which characterized in that: the method comprises the following steps:
a positioner: the system comprises a loop system, a positioning device and a control device, wherein the loop system is used for positioning the actual position point of each device in the loop system and sending a positioning signal;
a signal generator: the positioning device is connected with the positioning devices through signals and used for receiving positioning signals sent by the positioning devices and sending the positioning signals;
a data monitoring component: the device is used for monitoring the radial offset of the pipeline at the position of the welding line and sending monitoring data;
a controller: the positioning signal generator is used for receiving the positioning signal sent by the signal generator, receiving the monitoring data sent by the data monitoring component, and carrying out data analysis, modeling and attitude monitoring on the positioning signal and the monitoring data.
2. The system for monitoring the installation process attitude of the nuclear power plant primary loop system as recited in claim 1, wherein: the locator laser locator.
3. The system for monitoring the installation process attitude of the nuclear power plant primary loop system as recited in claim 1, wherein: the signal generator is a laser generator.
4. The system for monitoring the installation process attitude of the nuclear power plant primary loop system as recited in claim 1, wherein: the data monitoring part is a wireless communication type digital dial indicator.
5. The system for monitoring the installation process attitude of the nuclear power plant primary loop system as recited in claim 1, wherein: the signal generator is arranged on the axis of the reaction pressure vessel stack.
6. The system for monitoring the installation process attitude of the nuclear power plant primary loop system as recited in claim 1, wherein: each device in the loop system comprises a reaction pressure vessel stack, a steam generator and a main pump.
7. A nuclear power plant primary loop system installation process attitude monitoring method is characterized by comprising the following steps: the method comprises the following steps:
preparing a positioner, a signal generator, a data monitoring component and a controller, wherein the controller establishes a standard model according to the design size of a loop system and establishes a standard monitoring network on the basis of the standard model;
the standard monitoring network takes a certain point on the axis of the reactor pressure vessel as a reference point, the equipment surface of a loop system as a positioning point, a data monitoring part is arranged at a welding line, and a controller calculates the spatial relationship between the measuring points in a standard model;
arranging a signal generator on the datum point, arranging a positioner on a positioning point of equipment of a loop system, establishing a space monitoring network, enabling each measuring point in the space monitoring network to coincide with each measuring point in a standard monitoring network, carrying out signal connection on the positioner and the signal generator, and carrying out signal connection on the signal generator and a data monitoring component and a controller;
after welding is started, a positioner and a data monitoring component monitor positioning signals and monitoring data of each measuring point and send the positioning signals and the monitoring data to a controller, a space monitoring network receives the positioning signals in real time, the monitoring data are converted into digital signals, and a process model is established through the controller;
the controller compares the process model with the standard model to reflect the attitude change of the loop system.
8. The loop system installation process attitude monitoring method of claim 7, wherein: the center point of the signal generator is coincident with the datum point on the axis of the reactor pressure vessel.
9. The loop system installation process attitude monitoring method of claim 7, wherein: the positioner is arranged on the surfaces of the reaction pressure vessel stack, the steam generator and the main pump, and the surfaces comprise the periphery, the top and the bottom.
10. The loop system installation process attitude monitoring method of claim 7, wherein: the data monitoring components are arranged on two sides and/or the periphery of the welding seam.
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Cited By (1)
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|---|---|---|---|---|
| CN112629355A (en) * | 2020-12-04 | 2021-04-09 | 南京信息职业技术学院 | Intelligent detection system and method based on dial indicator |
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Application publication date: 20200602 |