CN112362184A - Remote temperature monitoring system of spent fuel dry-type storage concrete storage module - Google Patents
Remote temperature monitoring system of spent fuel dry-type storage concrete storage module Download PDFInfo
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- CN112362184A CN112362184A CN202011312002.6A CN202011312002A CN112362184A CN 112362184 A CN112362184 A CN 112362184A CN 202011312002 A CN202011312002 A CN 202011312002A CN 112362184 A CN112362184 A CN 112362184A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/022—Means for indicating or recording specially adapted for thermometers for recording
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
Abstract
The invention discloses a remote temperature monitoring system of a spent fuel dry-type storage concrete storage module, which belongs to the field of spent fuel post-treatment in a nuclear power station and comprises the following components: the device comprises a temperature detection module, an analog input conversion module, a PLC (programmable logic controller) and an upper computer; the temperature detection module comprises a temperature detection sensor I and a temperature detection sensor II; one end of the temperature detection sensor I and one end of the temperature detection sensor II are respectively connected with one end of the analog quantity input conversion module; the other end of the analog quantity input conversion module is connected with one end of the PLC; the other end of the PLC is connected with an upper computer, and the system realizes centralized processing on dispersed temperature signals; the intelligent temperature monitoring system has the advantages of high safety and reliability, stable and reliable operation, capability of quickly judging and recording various faults, realization of remote real-time monitoring of the temperature in the high-radiation environment in the storage module, realization of informatization management of the temperature value in the storage module, and long-term and comprehensive alarm information and data recording.
Description
Technical Field
The invention relates to the field of spent fuel post-treatment in nuclear power stations, in particular to a remote temperature monitoring system of a spent fuel dry-type storage concrete storage module.
Background
The dry storage of spent fuel is a necessary choice for future development of spent fuel reprocessing. Because the spent fuel has decay heat for a long time after being unloaded from the reactor core, thereby influencing the storage safety, as a concrete module of a container for storing the spent fuel in a dry storage treatment mode, the internal radiation dose is higher, the remote temperature monitoring and recording are required to be carried out during the storage period, and the method adopting the temperature of the manual module patrol has the following problems: the radiation dose is large, and the personal safety is harmed; the actual temperature inside the concrete cannot be accurately measured; the data are recorded and counted, and the workload is large; the temperature data inside each module cannot be monitored in real time.
The temperature monitoring system of the spent fuel dry-type storage concrete storage module is used as a core technology of the auxiliary equipment of a spent fuel dry-type storage project, and the same project and equipment are not available at home before.
Disclosure of Invention
According to the problems existing in the prior art, the invention discloses a remote temperature monitoring system of a spent fuel dry type storage concrete storage module, which comprises:
the temperature detection modules comprise a temperature detection sensor I and a temperature detection sensor II which are used for detecting the temperature of the distributed spent fuel dry type storage concrete storage modules to obtain a resistance signal I and a resistance signal II;
the analog quantity input conversion module is used for receiving the resistance signal I and the resistance signal II transmitted by the temperature detection sensor I and the temperature detection sensor II and respectively converting the resistance signal I and the resistance signal II into a digital signal I and a digital signal II;
the PLC is used for receiving the digital signal I and the digital signal II transmitted by the analog input conversion module and respectively converting the digital signal I and the digital signal II into a temperature signal I and a temperature signal II; the PLC respectively judges whether the temperature signal I and the temperature signal II exceed a threshold value, when the digital signal I or the digital signal II exceeds the threshold value I, a threshold value alarm signal is sent out, the temperature signal I and the temperature signal II are subjected to difference to obtain a difference value I, and when the difference value I is larger than the threshold value II, an out-of-tolerance alarm signal is sent out;
the upper computer receives the temperature signal I, the temperature signal II, the threshold value alarm signal and the out-of-tolerance alarm signal transmitted by the PLC, displays the temperature values of the temperature detection sensor I and the temperature detection sensor II, records and displays the threshold value alarm signal, the out-of-tolerance alarm signal, positions the position of the spent fuel storage module with the out-of-temperature fault, and displays the temperature curves of the temperature detection sensor I and the temperature detection sensor II installed in each module in real time.
Further, the temperature detection module also comprises a protective sleeve arranged outside the temperature detection sensor I and the temperature detection sensor II.
Furthermore, the system also comprises a UPS, and the UPS is used for providing power for the temperature detection module, the analog input conversion module, the PLC and the upper computer.
By adopting the technical scheme, the remote temperature monitoring system of the spent fuel dry-type storage concrete storage module provided by the invention realizes remote reading and recording of temperature information in a high-radiation environment in the spent fuel storage module and fault alarm of overtemperature and the like of the module, and an operator can remotely read the temperature and alarm information of each storage module through an industrial personal computer of a main operation console and can also perform operations such as limit temperature alarm value modification, current temperature detection sensor fault information, historical data of module temperature and the like; temperature signals in the spent fuel concrete storage modules in different area positions are measured in real time through temperature detection sensors arranged in the modules, are collected to a local PLC (programmable logic controller) in the system through connecting cables, and temperature values are transmitted by adopting a Profinet network technology after being processed by a PLC logic program and are stored in a database carried by an upper computer monitoring picture program to realize centralized processing of dispersed temperature signals; the intelligent temperature monitoring system has the advantages of high safety and reliability, stable and reliable operation, capability of quickly judging and recording various faults, realization of remote real-time monitoring of the temperature in the high-radiation environment in the storage module, realization of informatization management of the temperature value in the storage module, and long-term and comprehensive alarm information and data recording.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of the system;
FIG. 2 is a view of the outline of a temperature detecting sensor;
FIG. 3 is an outline view of an analog input module;
FIG. 4 is a hardware configuration diagram of a PLC controller circuit;
FIG. 5 is a functional diagram of a PLC monitoring program;
FIG. 6 is a flow chart of the main process of the monitoring function;
FIG. 7 is a diagram of real-time temperature monitoring of an upper computer;
FIG. 8 is a diagram of upper computer data input;
FIG. 9 is an alarm diagram of the temperature detecting sensor measuring temperature difference exceeding 10 deg.C.
In the figure: 1. the device comprises a temperature detection module, 2, an analog input conversion module, 3, an upper computer, 4, a UPS (uninterrupted power supply), 5 and a PLC (programmable logic controller).
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
FIG. 1 is a block diagram of the system; a remote temperature monitoring system for a spent fuel dry storage concrete storage module, comprising: the device comprises a temperature detection module 1, an analog input conversion module 2, an upper computer 3, a UPS (uninterrupted power supply) 4 and a PLC (programmable logic controller) 5.
The method comprises the following steps that a plurality of temperature detection modules 1 are adopted to detect the temperature of a distributed spent fuel dry-type storage concrete storage module, wherein each temperature detection module 1 comprises a temperature detection sensor I and a temperature detection sensor II which are used for detecting the temperature of the spent fuel dry-type storage concrete storage module to obtain a resistance signal I and a resistance signal II;
two stainless steel thermal resistance sleeves are arranged at the top of each concrete module and used as protective sleeves, a temperature sensor enters and exits the sleeves, the sleeves play an anti-corrosion protection role for the temperature detection sensor, the sleeves are pre-embedded in advance when the modules are manufactured, the temperature detection sensor adopts a master-slave dual-redundancy design, and the two sensors are respectively arranged in the sleeves at the top of the concrete modules;
the system is provided with three temperature alarm faults, wherein when the temperature value detected by a certain temperature detection sensor is higher than 30C/24 h, the rising speed is higher; secondly, when the temperature monitored by one sensor exceeds a preset limit value, the system displays an alarm; thirdly, comparing the temperatures measured by the two sensors in the same module, and triggering temperature difference alarm when the temperature difference exceeds 10 ℃.
The outline of the temperature detecting sensor is shown in figure 2. The specification and technical requirement parameters of the temperature detection sensor are as follows: the graduation number is Pt 100; precision grade: a tolerance is: + - (0.15+0.002| t |); measurement range: -50 to 400 ℃; the structure is as follows: an armored type; the diameter of the temperature measuring rod is as follows: phi 6 mm; the protection tube is made of materials: 316 SS; the installation and fixation form is as follows: fixed threads 1/2 "npt (m); the thread material is 316 SS.
The analog input conversion module 2 receives a resistance signal I and a resistance signal II transmitted by the temperature detection sensor I and the temperature detection sensor II, and respectively converts the resistance signal I and the resistance signal II into a digital signal I and a digital signal II, the analog input conversion module 2 adopts a plurality of Siemens S7-1500 series ET 200MP series AI (can support 8-channel RTDs at most, the analog input conversion module has high performance and is isolated by channels) modules to form a thermal resistance temperature signal acquisition part, the analog input conversion module 2 has 16-bit resolution ratio, and the conversion time of each channel is as follows: a fast mode: 4/18/22/102 ms; standard mode: 9/52/62/302 ms; the length of the shielded cable can reach 200 meters at most when the shielded cable is connected with the RTD. The device has the functions of overrun and disconnection diagnosis. The analog input conversion module 2 converts the resistance value of the connected thermal resistor into digital value through A/D conversion in each channel, a storage address is stored correspondingly, a monitoring master station PLC system obtains a temperature signal through program calculation, and the temperature signal is sent to the upper computer 3 for display and recording. The outline of the analog input module is shown in figure 3.
The PLC 5 receives the digital signal I and the digital signal II transmitted by the analog input conversion module 2 and respectively converts the digital signal I and the digital signal II into a temperature signal I and a temperature signal II, a logic control program loaded by the PLC 5 respectively judges whether the temperature signal I and the temperature signal II exceed a threshold value, when the digital signal I or the digital signal II exceed the threshold value I, a threshold value alarm signal is sent out, the temperature signal I and the temperature signal II are subjected to difference to obtain a difference value I, and when the difference value I is larger than the threshold value II, an over-difference alarm signal is sent out;
the PLC controller 5 is used as a control core of the whole monitoring system, a logic measurement and control program is loaded in the CPU to finish the functions of temperature data acquisition and processing, overtemperature alarm measurement and calculation, transmission of data required by system monitoring picture display and the like, the PLC controller 5 can calculate the temperature signal of the temperature detection module 1, run a temperature alarm calculation program and finish the operations of activating and canceling the measurement function of a single module and the like. A remote ethernet interface may also be provided to facilitate viewing of the information of the monitoring system via a remote computer. FIG. 4 is a hardware configuration diagram of a PLC controller circuit; FIG. 5 is a functional diagram of a monitoring program of the PLC controller, and FIG. 6 is a flow chart of a main program of the monitoring function;
the upper computer 3 receives the temperature signal I, the temperature signal II, the threshold value alarm signal and the out-of-tolerance alarm signal transmitted by the PLC 5, the upper computer 3 forms a display picture of an editing configuration monitoring system through human-computer interface configuration software, and the display picture of a human-computer interface (HMI) of the monitoring system can display the temperature values of the temperature detection sensor I and the temperature detection sensor II, record and display the threshold value alarm signal and the out-of-tolerance alarm signal, position the spent fuel storage module with the out-of-temperature fault and display the temperature curves of the temperature detection sensor I and the temperature detection sensor II installed in each module in real time.
The upper computer 3 is a computer or an industrial personal computer which can directly send out control commands, the change of various signals can be displayed on a screen, the numerical value of the temperature detection sensor corresponding to each measurement channel can be displayed on the monitoring picture of the touch screen of the industrial personal computer of the upper computer 3 in real time, an operator can check the historical record information and the curve trend graph of the temperature of each sensor, check the temperature measurement deviation early warning information and the over-temperature warning information of the temperature detection sensor of each module and position the position of the warning module. The upper computer 3 (industrial personal computer) monitors a database in a picture to store the temperature value of each sensor, and the human-computer interface configuration software can configure and generate temperature trend graphs of the temperature detection sensor I and the temperature detection sensor II according to the historical data value of the temperature of each temperature detection sensor stored in the database, so as to display the curves in real time. And can complete the operations of setting the temperature alarm value, canceling the module monitoring function and the like. FIG. 7 is a real-time temperature monitoring diagram of a human-machine interface monitoring picture of the upper computer 3; FIG. 8 is a diagram of upper computer data input; FIG. 9 is an alarm diagram of the temperature detecting sensor measuring temperature difference exceeding 10 deg.C.
The system is provided with an industrial UPS (uninterrupted power supply) 4, wherein the UPS 4 is used for supplying power to the temperature detection module 1, the analog input conversion module 2, the PLC 5 and the upper computer 3.
The storage battery is integrated in the system, and the system equipment which converts direct current into commercial power through the integrated inverter and other module circuits can continuously supply power under the condition of short power failure of a commercial power supply system, so that the monitoring system can continuously work.
When the power supply outside the system has a short fault, the UPS 4 can ensure the system to continuously operate in a short time and send power failure alarm information.
The invention can be popularized and applied to other devices with the requirement of temperature monitoring function.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The utility model provides a remote temperature monitoring system of spent fuel dry-type storage concrete storage module which characterized in that: the method comprises the following steps:
the temperature detection modules comprise a temperature detection sensor I and a temperature detection sensor II which are used for detecting the temperature of the distributed spent fuel dry type storage concrete storage modules to obtain a resistance signal I and a resistance signal II;
the analog quantity input conversion module is used for receiving the resistance signal I and the resistance signal II transmitted by the temperature detection sensor I and the temperature detection sensor II and respectively converting the resistance signal I and the resistance signal II into a digital signal I and a digital signal II;
the PLC is used for receiving the digital signal I and the digital signal II transmitted by the analog input conversion module and respectively converting the digital signal I and the digital signal II into a temperature signal I and a temperature signal II; the PLC respectively judges whether the temperature signal I and the temperature signal II exceed a threshold value, when the digital signal I or the digital signal II exceeds the threshold value I, a threshold value alarm signal is sent out, the temperature signal I and the temperature signal II are subjected to difference to obtain a difference value I, and when the difference value I is larger than the threshold value II, an out-of-tolerance alarm signal is sent out;
the upper computer receives the temperature signal I, the temperature signal II, the threshold value alarm signal and the out-of-tolerance alarm signal transmitted by the PLC, displays the temperature values of the temperature detection sensor I and the temperature detection sensor II, records and displays the threshold value alarm signal, the out-of-tolerance alarm signal, positions the position of the spent fuel storage module with the out-of-temperature fault, and displays the temperature curves of the temperature detection sensor I and the temperature detection sensor II installed in each module in real time.
2. The remote temperature monitoring system of the spent fuel dry storage concrete storage module according to claim 1, wherein: the temperature detection module further comprises a protective sleeve arranged outside the temperature detection sensor I and the temperature detection sensor II.
3. The remote temperature monitoring system of the spent fuel dry storage concrete storage module according to claim 1, wherein: the system further comprises a UPS, and the UPS is used for providing power for the temperature detection module, the analog quantity input conversion module, the PLC and the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312002.6A CN112362184A (en) | 2020-11-20 | 2020-11-20 | Remote temperature monitoring system of spent fuel dry-type storage concrete storage module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011312002.6A CN112362184A (en) | 2020-11-20 | 2020-11-20 | Remote temperature monitoring system of spent fuel dry-type storage concrete storage module |
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| CN112362184A true CN112362184A (en) | 2021-02-12 |
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| CN202011312002.6A Pending CN112362184A (en) | 2020-11-20 | 2020-11-20 | Remote temperature monitoring system of spent fuel dry-type storage concrete storage module |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1306198A (en) * | 1970-06-11 | 1973-02-07 | ||
| CN1327148A (en) * | 2000-06-07 | 2001-12-19 | 上海市住安建设发展总公司 | Large volume concrete radio temperature measuring and temperature forcecast system |
| US20130063269A1 (en) * | 2011-09-08 | 2013-03-14 | Kepco Nuclear Fuel Co., Ltd. | Real time monitoring system of spent fuel pool and method thereof |
| CN206725115U (en) * | 2017-04-18 | 2017-12-08 | 海正化工南通股份有限公司 | A kind of double temperature measuring equipments of single-point in chemical process automation production |
| CN109725588A (en) * | 2018-11-28 | 2019-05-07 | 中国科学院近代物理研究所 | A kind of temperature monitoring system and method |
| CN111780888A (en) * | 2020-07-17 | 2020-10-16 | 安徽徽宁电器仪表集团有限公司 | Thermal resistance |
-
2020
- 2020-11-20 CN CN202011312002.6A patent/CN112362184A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1306198A (en) * | 1970-06-11 | 1973-02-07 | ||
| CN1327148A (en) * | 2000-06-07 | 2001-12-19 | 上海市住安建设发展总公司 | Large volume concrete radio temperature measuring and temperature forcecast system |
| US20130063269A1 (en) * | 2011-09-08 | 2013-03-14 | Kepco Nuclear Fuel Co., Ltd. | Real time monitoring system of spent fuel pool and method thereof |
| CN206725115U (en) * | 2017-04-18 | 2017-12-08 | 海正化工南通股份有限公司 | A kind of double temperature measuring equipments of single-point in chemical process automation production |
| CN109725588A (en) * | 2018-11-28 | 2019-05-07 | 中国科学院近代物理研究所 | A kind of temperature monitoring system and method |
| CN111780888A (en) * | 2020-07-17 | 2020-10-16 | 安徽徽宁电器仪表集团有限公司 | Thermal resistance |
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