CN111948121A - Method and system for aging metal material of solar start-stop unit - Google Patents
Method and system for aging metal material of solar start-stop unit Download PDFInfo
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- 239000007769 metal material Substances 0.000 title claims abstract description 42
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- 238000010438 heat treatment Methods 0.000 claims description 38
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Abstract
The invention discloses a method for aging a metal material of a day start-stop unit, which comprises the following steps: acquiring temperature change data of the unit during operation; controlling the temperature change of the material to be tested according to the temperature change data; and acquiring performance data generated by the material to be tested in the temperature change process. The invention provides a method and a system for aging a metal material of a day start-stop unit, which can be used for performing aging simulation on the metal material of a power station unit and providing experimental data for the aging research on the metal material related to the power station unit.
Description
Technical Field
The invention relates to the technical field of material mechanics, in particular to a method and a system for aging a metal material of a day start-stop unit.
Background
With the development of the power industry in China, the performance test of the power station unit is concerned. The structural strength, safety, reliability and service life of the metal parts of the power station unit are always important concerns of design, manufacture, operation, overhaul and supervision and inspection personnel at home and abroad. As the power station unit runs for a long time, the aging problem of metal parts is increasingly prominent. The aging damage quantification rule of the metal material is researched and mastered, and the method has important value and practical significance for ensuring the safe operation of the power station.
With the continuous improvement of the temperature and pressure parameters of the power station unit in China, the specification of the used metal material is also increased. However, the new materials introduced from abroad, such as Super304H, TP347H, HR3C, T/P91, T/P92, T/P122 and the like, have short service life at present, do not form mature and reliable standard data to guide production in some aspects, and especially have more difficult mastery of performance change after long-term operation. In addition, the power station boiler has few shutdown and overhaul opportunities, even if overhaul is mainly performed by spot check, performance data which can be collected are few, and inspection and service life evaluation are performed basically in a nondestructive inspection mode, and the accuracy is inevitably reduced in the condition, so that an aging simulation system is needed, the health condition and the aging trend of metal parts can be predicted, the service life state of the metal parts can be mastered, and powerful guidance is provided for metal supervision.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method and a system for aging of a metal material of a day start-stop unit, which can perform aging simulation on the metal material of a power station unit and provide experimental data for the aging research of the metal material related to the power station unit. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a method for aging a metal material of a day start-stop unit, including:
acquiring temperature change data of the unit during operation;
controlling the temperature change of the material to be tested according to the temperature change data;
and acquiring performance data generated by the material to be tested in the temperature change process.
In a first possible implementation manner of the first aspect of the present invention, the temperature change data at least includes a working time length from start-up to shutdown of the unit, and a temperature change interval; the temperature change of the material to be tested is controlled according to the temperature change data, and the method further comprises the following steps:
according to the working duration and the temperature change interval, heating the material to be tested to a target working temperature in a period, and then cooling;
the cycle is repeated to heat and cool the material to be tested and counts once per completed cycle.
In a second possible implementation manner of the first aspect of the present invention, after the counting is completed, the method further includes:
and multiplying the recorded times by the approximate aging coefficient of the material to be tested to obtain a product which is the running days.
In a third possible implementation manner of the first aspect of the present invention, the step of heating the material to be tested to the target working temperature in a cycle and then cooling the material to be tested according to the working duration and the temperature variation interval specifically includes:
heating the material to be tested at a starting-up time point according to a preset temperature change rate, and maintaining the target working temperature to a shutdown time point after heating to the target working temperature;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
In a second aspect, an embodiment of the invention provides a metal material aging system for a day start-stop unit, which comprises a heating and constant temperature device, a cooling and constant temperature device and a main controller;
the heating and constant temperature device is used for heating the material to be tested and maintaining the temperature of the material to be tested;
the cooling and constant temperature device is used for cooling the material to be tested and maintaining the temperature of the material to be tested;
the main controller includes:
the data input module is used for acquiring temperature change data of the unit during operation;
the control module is used for controlling the temperature change of the material to be tested according to the temperature change data;
and the data acquisition module is used for acquiring performance data generated by the material to be tested in the temperature change process.
In a first possible implementation manner of the second aspect of the present invention, the metal material aging system of the day start-stop unit further includes a transmission device;
the transfer device is used for transferring the material to be tested between the heating and constant temperature device and the cooling and constant temperature device.
In a second possible implementation manner of the second aspect of the present invention, the temperature change data at least includes a working time length from start-up to shutdown of the unit, and a temperature change interval;
the control module is further used for controlling the heating and constant temperature device to heat the material to be tested to a target working temperature according to the working duration and the temperature change interval, and then controlling the transfer device to transfer the material to be tested to the cooling and constant temperature device to be cooled.
In a third possible implementation manner of the second aspect of the present invention, the control module is further configured to:
heating the material to be tested at a starting-up time point according to a preset temperature change rate, and maintaining the target working temperature to a shutdown time point after heating to the target working temperature;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
In a fourth possible implementation manner of the second aspect of the present invention, the metal material aging system of the day start-stop unit further includes a counter;
the counter is used for taking the process from heating to cooling of the material to be tested as a period, recording the times of repeatedly operating the period, and counting once every time one period is finished.
In a fifth possible implementation manner of the second aspect of the present invention, the metal material aging system of the day start-stop unit further includes a calculation module;
and the calculating module is used for multiplying the times of recording the period by the approximate aging coefficient of the material to be tested, and the obtained product is the number of running days.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the invention provides a method and a system for aging a metal material of a daily start-stop unit, which are used for obtaining a real temperature time rule when the unit operates by acquiring temperature change data when the unit operates; on the basis, the temperature change of the material to be tested is controlled according to the temperature change data, and the performance data of the material to be tested in the temperature change process is collected, so that the performance data of the material to be tested to be used in the unit is detected under the actual temperature change condition, the aging simulation closer to the real operation condition of the unit is realized, and the experimental data are provided for the aging research of the metal material related to the power station unit.
Drawings
FIG. 1 is a flowchart illustrating steps of a method for aging a metal material of a day start-stop unit according to an embodiment of the present invention;
FIG. 2 is a temperature curve diagram obtained by the method and system for aging a metal material of a day start-stop unit in the embodiment of the invention;
FIG. 3 is a temperature-time graph of a complete cycle of a method and system for aging a metal material of a day start-stop unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a metal material aging system of a day start-stop unit in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, the present invention provides an exemplary embodiment of a method for aging a metal material of a day start-stop unit, including the steps of:
s101, acquiring temperature change data of a unit during operation;
referring to fig. 2, it can be understood that the temperature change data is generally presented in a temperature graph mode, a temperature graph of the unit in normal operation is extracted, and a temperature change rule of the unit is researched;
s102, controlling the temperature change of the material to be tested according to the temperature change data;
s103, collecting performance data generated by the material to be tested in the temperature change process.
The temperature change data of the unit during operation is acquired, and at least comprises the working time of the unit from startup to shutdown and the temperature change interval.
According to the working duration and the temperature change interval, heating the material to be tested to a target working temperature in a period, and then cooling;
the cycle is repeated to heat and cool the material to be tested and counts once per completed cycle.
Preferably, after the counting is completed, the method further comprises:
and multiplying the recorded times by the approximate aging coefficient of the material to be tested to obtain a product which is the running days.
According to the working duration and the temperature change interval, the material to be tested is heated to the target working temperature in the period and then cooled, and the method specifically comprises the following steps:
heating the material to be tested at a starting-up time point according to a preset temperature change rate, and maintaining the target working temperature to a shutdown time point after heating to the target working temperature;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
Referring to fig. 3, the present invention provides a specific embodiment, in which the material to be tested is T/P91. Starting to heat the T/P91 at the startup time point, rising from normal temperature to about 565 ℃ at 300 ℃/h, then keeping 565 ℃ until the shutdown time point according to the operation requirement, then reducing to about 300 ℃ at the speed of 300 ℃/h for standby, rising from the standby temperature of 300 ℃ to 565 ℃ at the same speed, then keeping the temperature constant, and then reducing to 300 ℃ at each startup and shutdown, and the process is circulated. The number of times is accumulated once each time the above-mentioned cycle is completed.
It can be understood that different materials have close relations with different factors such as temperature rising rate, operation temperature, constant temperature duration, temperature lowering rate, minimum standby temperature and the like, and the temperature time point is set strictly according to actual conditions, so that the simulation degree is improved, and the accuracy of life prediction is improved.
Referring to fig. 4, the present invention further provides an exemplary embodiment of a metal material aging system for a day start-stop unit, which includes a heating and thermostat device 201, a cooling and thermostat device 202, and a main controller 203;
the heating and constant temperature device 201 is used for heating the material to be tested and maintaining the temperature of the material to be tested;
the heating and constant temperature device can be used for heating by flexible ceramic resistance, far infrared radiation, flame, induction and the like;
the cooling and constant temperature device 202 is used for cooling the material to be tested and maintaining the temperature of the material to be tested;
the cooling and constant temperature device can be used for cooling by air, water, warm and cold, liquid nitrogen cooling and the like;
the main controller 203 includes:
the data input module is used for acquiring temperature change data of the unit during operation;
the control module is used for controlling the temperature change of the material to be tested according to the temperature change data;
and the data acquisition module is used for acquiring performance data generated by the material to be tested in the temperature change process.
Preferably, the metal material aging system of the day start-stop unit further comprises a transmission device;
the transfer device is used for transferring the material to be tested between the heating and constant temperature device and the cooling and constant temperature device.
The temperature change data of the unit during operation is acquired, and at least comprises the working time of the unit from startup to shutdown and a temperature change interval;
the control module is further used for controlling the heating and constant temperature device to heat the material to be tested to a target working temperature according to the working duration and the temperature change interval, and then controlling the transfer device to transfer the material to be tested to the cooling and constant temperature device to be cooled.
Specifically, according to a preset temperature change rate, heating the material to be tested at a starting time point, and after heating to a target working temperature, maintaining the target working temperature to a shutdown time point;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
Preferably, the metal material aging system of the day start-stop unit further comprises a counter;
the counter is used for taking the process from heating to cooling of the material to be tested as a period, recording the times of repeatedly operating the period, and counting once every time one period is finished.
Preferably, the metal material aging system of the day start-stop unit further comprises a calculation module;
and the calculating module is used for multiplying the recorded times by the approximate aging coefficient of the material to be tested, and the obtained product is the running days.
The present invention provides a specific embodiment, in this embodiment, the material to be tested is T/P91. Controlling the heating and constant temperature device to start heating the T/P91 at a starting time point, increasing the temperature from normal temperature to about 565 ℃ at 300 ℃/h, and then keeping 565 ℃ until a stopping time point according to the operation requirement; and (3) transferring the material to be tested to the temperature reduction and constant temperature device by using a transfer device, reducing the temperature to about 300 ℃ at the speed of 300 ℃/h for standby, then increasing the standby temperature from 300 ℃ to 565 ℃ at the same speed every start-stop, then keeping the temperature, reducing the temperature to 300 ℃, and repeating the steps. The counter is incremented each time the above cycle is completed.
The invention provides an exemplary embodiment, a storage medium of a metal material aging method of a day-start-stop unit, which is used for storing one or more computer programs, wherein the one or more computer programs comprise program codes, and when the computer programs run on a computer, the program codes are used for executing the metal material aging method of the day-start-stop unit.
The computer readable media of the embodiments of the present application may be computer readable signal media or computer readable storage media or any combination of the two. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable read-only memory (CDROM). Additionally, the computer-readable storage medium may even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The invention provides a method and a system for aging a metal material of a daily start-stop unit, which are used for obtaining a real temperature time rule when the unit operates by acquiring temperature change data when the unit operates; on the basis, the temperature change of the material to be tested is controlled according to the temperature change data, and the performance data of the material to be tested in the temperature change process is collected, so that the performance data of the material to be tested to be used in the unit is detected under the actual temperature change condition, the aging simulation closer to the real operation condition of the unit is realized, and the experimental data are provided for the aging research of the metal material related to the power station unit.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for aging a metal material of a day start-stop unit is characterized by comprising the following steps:
acquiring temperature change data of the unit during operation;
controlling the temperature change of the material to be tested according to the temperature change data;
and acquiring performance data generated by the material to be tested in the temperature change process.
2. The aging method for the metal materials of the day start-stop unit according to claim 1, wherein the temperature change data at least comprises the working time length from start-up to shutdown of the unit and a temperature change interval; the temperature change of the material to be tested is controlled according to the temperature change data, and the method further comprises the following steps:
according to the working duration and the temperature change interval, heating the material to be tested to a target working temperature in a period, and then cooling;
the cycle is repeated to heat and cool the material to be tested and counts once per completed cycle.
3. The aging method for metal materials of the day start-stop unit according to claim 2, further comprising, after the counting is completed:
and multiplying the recorded times by the approximate aging coefficient of the material to be tested to obtain a product which is the running days.
4. The aging method for the metal material of the day start-stop unit according to claim 2, wherein the material to be tested is heated to the target working temperature and then cooled down in a period according to the working duration and the temperature change interval, and specifically comprises the following steps:
heating the material to be tested at a starting-up time point according to a preset temperature change rate, and maintaining the target working temperature to a shutdown time point after heating to the target working temperature;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
5. A metal material aging system of a day start-stop unit is characterized by comprising a heating and constant temperature device, a cooling and constant temperature device and a main controller;
the heating and constant temperature device is used for heating the material to be tested and maintaining the temperature of the material to be tested;
the cooling and constant temperature device is used for cooling the material to be tested and maintaining the temperature of the material to be tested;
the main controller includes:
the data input module is used for acquiring temperature change data of the unit during operation;
the control module is used for controlling the temperature change of the material to be tested according to the temperature change data;
and the data acquisition module is used for acquiring performance data generated by the material to be tested in the temperature change process.
6. The aging system for metal materials of the day start-stop unit of claim 5, further comprising a transmission device;
the transfer device is used for transferring the material to be tested between the heating and constant temperature device and the cooling and constant temperature device.
7. The aging system for the metal materials of the day start-stop unit according to claim 6, wherein the temperature change data at least comprises the working time length and the temperature change interval from start-up to stop-up of the unit;
the control module is further used for controlling the heating and constant temperature device to heat the material to be tested to a target working temperature according to the working duration and the temperature change interval, and then controlling the transfer device to transfer the material to be tested to the cooling and constant temperature device to be cooled.
8. The day start-stop unit metal material aging system of claim 7, wherein the control module is further configured to:
heating the material to be tested at a starting-up time point according to a preset temperature change rate, and maintaining the target working temperature to a shutdown time point after heating to the target working temperature;
and cooling the material to be tested according to the temperature change rate at the shutdown time point.
9. The aging system for metal materials of the day start-stop unit of claim 7, further comprising a counter;
the counter is used for taking the process from heating to cooling of the material to be tested as a period, recording the times of repeatedly operating the period, and counting once every time one period is finished.
10. The aging system for metal materials of the day start-stop unit of claim 9, further comprising a calculation module;
and the calculating module is used for multiplying the times of recording the period by the approximate aging coefficient of the material to be tested, and the obtained product is the number of running days.
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| CN202010780902.7A CN111948121A (en) | 2020-08-05 | 2020-08-05 | Method and system for aging metal material of solar start-stop unit |
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| CN202010780902.7A CN111948121A (en) | 2020-08-05 | 2020-08-05 | Method and system for aging metal material of solar start-stop unit |
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| CN101858957A (en) * | 2010-05-27 | 2010-10-13 | 北京新润泰思特测控技术有限公司 | Ageing test box |
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| CN109142362A (en) * | 2018-09-10 | 2019-01-04 | 中国大唐集团科学技术研究院有限公司华中分公司 | It is a kind of based on the power plant of BP neural network service life of metal material appraisal procedure |
| CN110567866A (en) * | 2019-09-20 | 2019-12-13 | 浙江晶科能源有限公司 | photovoltaic module aging test system and method |
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2020
- 2020-08-05 CN CN202010780902.7A patent/CN111948121A/en active Pending
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| CN101858957A (en) * | 2010-05-27 | 2010-10-13 | 北京新润泰思特测控技术有限公司 | Ageing test box |
| US20160334462A1 (en) * | 2015-05-14 | 2016-11-17 | SK Hynix Inc. | Burn-in test system and method |
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| CN108318349A (en) * | 2018-02-01 | 2018-07-24 | 嘉兴市特种设备检验检测院 | A kind of thermoelectricity station-service ferrite type heat resisting steel is based on creep experiments under high temperature method |
| CN109142362A (en) * | 2018-09-10 | 2019-01-04 | 中国大唐集团科学技术研究院有限公司华中分公司 | It is a kind of based on the power plant of BP neural network service life of metal material appraisal procedure |
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