CN114857501A - Water pipeline heat tracing band temperature control and monitoring system and method thereof - Google Patents
Water pipeline heat tracing band temperature control and monitoring system and method thereof Download PDFInfo
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- CN114857501A CN114857501A CN202210446438.7A CN202210446438A CN114857501A CN 114857501 A CN114857501 A CN 114857501A CN 202210446438 A CN202210446438 A CN 202210446438A CN 114857501 A CN114857501 A CN 114857501A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/35—Ohmic-resistance heating
- F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a temperature control and monitoring system and a temperature control and monitoring method for a heat tracing band of a water pipeline, wherein the temperature control and monitoring system comprises a power supply module, a signal acquisition module, a microprocessor module and a load output module, wherein the output end of the signal acquisition module is connected to the input end of the microprocessor module and is used for acquiring two-way temperature values of the heat tracing band and the water pipeline; the load output module is connected to two ends of the heat tracing band and is used for controlling the heating of the heat tracing band; the microprocessor module comprises an embedded microprocessor, a GPRS module and a man-machine interaction unit, wherein the embedded microprocessor is used for processing two-way temperature value data of the signal acquisition module, issuing commands and communicating data with the GPRS module; the GPRS module is used for remotely transmitting data and transmitting the data to the cloud server; the human-computer interaction unit is used for manual operation and field data reading; the power supply module is connected to the power supply input ends of the signal acquisition module, the microprocessor module and the load output module and used for providing working power supply for the modules.
Description
Technical Field
The invention relates to the field of industrial detection and control, in particular to a system and a method for controlling and monitoring the temperature of a heat tracing band of a water pipeline.
Background
In the process of pipeline water delivery, if the temperature is too low, the pipeline can be condensed, so that the water delivery is stopped, and especially in winter and northern areas, the pipeline can be even frozen and cracked in severe cases.
At present, the most common pipeline heat preservation measure is to wrap heat preservation cotton outside a pipeline, and the method is simple, but has a plurality of defects, such as overlarge material consumption, incomplete heat preservation, difficulty in troubleshooting and the like. The heat tracing band is used for unfreezing in a small number of places, but the precise control is mostly lacked, the temperature of the heat tracing band and the temperature of a water pipe cannot be accurately and timely controlled, the heat tracing band can be damaged in serious situations, a large-range pipeline detection technology is lacked, and the precise position of a fault place cannot be accurately known when the fault occurs.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a temperature control and monitoring system and a temperature control and monitoring method for a heat tracing band of a water pipeline. Data in the single-point range are uploaded to the cloud end through the GPRS module, the cloud end receives data of all detection points, data analysis is carried out, the working state of the whole system is detected, faults are found in time, the fault risk is reduced automatically, and the safe conveying efficiency of the water conveying pipeline can be guaranteed to the maximum extent.
In order to achieve the above purpose, the technical solution for solving the technical problem is as follows:
the invention discloses a temperature control and monitoring system for a heat tracing band of a water pipeline, which comprises: power module, signal acquisition module, microprocessor module and load output module, wherein:
the output end of the signal acquisition module is connected to the input end of the ADC of the microprocessor module and is used for acquiring a two-way temperature value of the heat tracing band and the water conveying pipeline;
the load output module is connected to two ends of the heat tracing band and is used for controlling the heating of the heat tracing band;
the microprocessor module comprises an embedded microprocessor, a GPRS module and a man-machine interaction unit, wherein the embedded microprocessor is used for processing double-path temperature value data of the signal acquisition module, issuing commands and communicating data with the GPRS module; the GPRS module is used for remotely transmitting data and transmitting the data to the cloud server; the human-computer interaction unit is used for manual operation and field data reading;
the power supply module is connected to the power supply input ends of the signal acquisition module, the microprocessor module and the load output module and used for providing working power supplies for the signal acquisition module, the microprocessor module and the load output module.
Furthermore, the man-machine interaction unit comprises a key circuit and a display circuit, and the driving ends of the key circuit and the display circuit are connected to the IO pin of the embedded microprocessor.
Further, the load output module is controlled by a large-capacity relay, and a heat tracing band is connected to an output interface of the relay.
Furthermore, the signal acquisition module comprises a temperature acquisition unit and a signal conversion circuit, wherein the output end of the temperature acquisition unit is connected to the input end of the signal conversion circuit, and the output end of the signal conversion circuit is connected to the input end of the ADC pin of the embedded microprocessor.
Furthermore, the GPRS module is provided with a plurality of working points, and each working point is used for uploading local temperature data to the cloud server and forming a networking structure so as to ensure that the working state of the heat tracing band is monitored in real time and then the multipoint state analysis of the whole system is achieved.
Further, the temperature acquisition unit adopts a two-way temperature sensor and is used for detecting and acquiring the temperatures of the heat tracing band and the water pipeline, sending the detection data to the cloud server, further analyzing the temperature data through the central console, comparing the temperature data with a threshold set by a user, judging the temperature data to be a driving mark when the temperature data is lower than or higher than the threshold, sending driving mark information and carrying out output operation;
when the temperature value is lower than a set threshold value, the load output module is driven to enable the heat tracing band to work and start heating;
and when the temperature value is higher than the set threshold value, the load output module is disconnected, the energy-losing tracing band is disabled, the heating is stopped, and the natural cooling is started.
Further, double-circuit temperature detection sensor, it is digital temperature sensor all the way, another way is liquid temperature transmitter, wherein:
the temperature detection end of the digital temperature sensor is closely attached to the surface of the heat tracing band and used for detecting the temperature of the heat tracing band, and the digital output end is connected with a temperature sensor interface reserved in the core unit;
the liquid temperature transmitter is arranged in the water conveying pipeline and used for detecting the temperature of water in the water conveying pipeline, the signal output end is connected to the reserved interface of the other temperature sensor, and the signal is acquired and amplified through the hardware circuit and then sent to the microprocessor for analysis and processing.
Further, the power module includes a rectifying circuit and a voltage-reducing circuit, wherein:
the input end of the rectifying circuit is connected to the mains supply, and the output end of the rectifying circuit is connected to the input end of the voltage reduction circuit;
the input end of the voltage reduction circuit is connected to the output end of the rectification circuit, and the output end of the voltage reduction circuit is connected to the power input ends of the microprocessor module and the signal acquisition module.
The invention also discloses a method for controlling and monitoring the temperature of the heat tracing band of the water pipeline, which utilizes the system for controlling and monitoring the temperature of the heat tracing band of the water pipeline to control and detect and comprises the following steps:
the method comprises the following steps: the temperature of the heat tracing band and the temperature of the water delivery pipeline are collected in real time through a double-path temperature sensor and are displayed through a nixie tube;
step two: judging whether the temperature values of the two paths reach a set threshold value, if so, executing a third step, otherwise, executing a fourth step;
step three: the relay is driven to disconnect the heat tracing band, and the heating of the water pipeline is stopped;
step four: the driving relay is communicated with the heat tracing band to start heating the water pipeline;
step five: the embedded microprocessor transmits the temperature data and the system information to the GPRS module through a serial port, and the GPRS module packs the data and remotely transmits the data to the cloud server;
step six: and returning to the first step.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
according to the water pipe heat tracing band temperature control and monitoring system, heat tracing band temperature information of each node and water pipe internal temperature information can be displayed in real time, networking technology can be used, node state information is transmitted to the cloud end, data are analyzed at the cloud end, normal operation of the water pipe in a cold environment can be protected, normal operation of the heat tracing band can be guaranteed, and therefore water delivery efficiency and economic benefits are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a temperature control and monitoring system for a heat tracing band of a water pipeline according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of each sub-module in the water pipe heat tracing band temperature control and monitoring system of the present invention;
FIG. 3 is a schematic diagram of a multi-working-point networking in a water pipe tracing band temperature control and monitoring system according to the present invention;
fig. 4 is a schematic diagram of a driving decision process of the temperature control and monitoring method for the heat tracing band of the water pipe.
[ description of main symbols ]
1-a power supply module; 11-a rectifier circuit; 12-a voltage step-down circuit;
2-a signal acquisition module; 21-a temperature acquisition unit; 22-a signal conversion circuit;
3-a microprocessor module; 31-an embedded microprocessor; 32-a GPRS module; 33-a human-computer interaction unit; 331-a key circuit; 332-display circuitry;
4-a load output module; 41-a relay; 42-heat tracing band;
5-a cloud server;
6-center console.
Detailed Description
While the embodiments of the present invention will be described and illustrated in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.
Example one
As shown in fig. 1-3, the invention discloses a temperature control and monitoring system for a heat tracing band of a water pipeline, which comprises: power module 1, signal acquisition module 2, microprocessor module 3 and load output module 4, wherein:
the output end of the signal acquisition module 2 is connected to the ADC input end of the microprocessor module 3 and is used for acquiring a two-way temperature value of the heat tracing band 42 and the water pipeline;
the load output module 4 is connected to two ends of the heat tracing band 42 and is used for controlling the heating of the heat tracing band 42;
the microprocessor module 3 comprises an embedded microprocessor 31, a GPRS module 32 and a man-machine interaction unit 33, wherein the embedded microprocessor 31 is used for processing two-way temperature value data of the signal acquisition module 2, issuing commands and carrying out data communication with the GPRS module 32; the GPRS module 32 is configured to remotely transmit data and transmit the data to the cloud server 5; the human-computer interaction unit 33 is used for manual operation and field data reading;
the power supply module 1 is connected to the power supply input ends of the signal acquisition module 2, the microprocessor module 3 and the load output module 4, and is used for providing working power supplies for the signal acquisition module 2, the microprocessor module 3 and the load output module 4.
In this embodiment, the heat tracing band 42 has a width of 14mm and a length of 100m as a detection point, the heat tracing band 42 is wound on the water pipeline in a serpentine winding manner, and a heat preservation measure can be added to the outside.
Further, the human-computer interaction unit 33 includes a key circuit 331 and a display circuit 332, and driving terminals of the key circuit 331 and the display circuit 332 are connected to an IO pin of the embedded microprocessor 31.
Further, the load output module 4 is controlled by using a large-capacity relay 41, and a heat tracing band 42 is connected to an output interface of the relay 41.
Further, the power module 1 includes a rectifying circuit 11 and a voltage-reducing circuit 12, an input end of the rectifying circuit 11 is connected to the commercial power, and an output end of the rectifying circuit is connected to an input end of the voltage-reducing circuit 12; the input end of the voltage reduction circuit 12 is connected to the output end of the rectification circuit 11, and the output end is connected to the power input ends of the microprocessor module 3 and the signal acquisition module 2.
Further, the signal acquisition module 2 includes a temperature acquisition unit 21 and a signal conversion circuit 22, an output end of the temperature acquisition unit 21 is connected to an input end of the signal conversion circuit 22, and an output end of the signal conversion circuit 22 is connected to an input end of an ADC pin of the embedded microprocessor 31.
Further, the GPRS module 32 has a plurality of operating points, and each of the operating points is configured to upload local temperature data to the cloud server 5, so as to form a networking structure and further ensure real-time monitoring of the operating state of the heat tracing band 42, thereby performing multipoint state analysis of the entire system. In this embodiment, the single-point GPRS module 32 sends the temperature data to the cloud server 5, and the cloud server 5 sends the temperature data to the central console 6 again, so as to display the system state and the temperature information in real time.
Further, the temperature acquisition unit 21 adopts a two-way temperature sensor, and is configured to detect and acquire the temperatures of the heat tracing band 42 and the water pipeline, send the detection data to the cloud server 5, further perform temperature data analysis through the central console 6, compare the detection data with a threshold set by a user, determine that a driving mark is determined when the detection data is lower than or higher than the set threshold, send driving mark information, and perform output operation;
when the temperature value is lower than the set threshold value, the load output module 4 is driven, the heat tracing band 42 is enabled to work, and heating is started;
and when the temperature value is higher than the set threshold value, the load output module 4 is disconnected, the heat tracing band 42 is disabled, heating is stopped, and natural cooling is started.
The specific sub-modules are explained by combining fig. 2, the temperature acquisition unit 21 has two data connection terminals, one is connected with the data output end of the digital temperature sensor, and the other is connected with the data output end of the liquid temperature transmitter, the temperature detection end of the digital temperature sensor is installed on the surface close to the heat tracing band 42 and used for detecting the temperature of the heat tracing band 42, the digital output end is connected with the temperature sensor interface reserved in the core unit, the liquid temperature transmitter is installed in the water pipeline and used for detecting the temperature of water in the water pipeline, the signal output end is connected with the other reserved temperature sensor interface, and the signals are acquired and amplified through the hardware circuit and sent to the microprocessor for analysis and processing. The signal conversion circuit 22 serves as a signal intermediary and transmits temperature information to the embedded microprocessor 31, the embedded microprocessor 31 processes data and sends a command to the relay 41 to control the on-off of the heat tracing band 42 so as to control the temperature of the heat tracing band 42, the display circuit 332 is used for displaying the temperature information in real time, 4 paths of digital tubes are adopted and display the temperature of the heat tracing band 42 and the temperature in the water pipeline in turn, the tail positions of the digital tubes are distinguished by letters 'A' and 'B' (the letters can be set as required, if the last letter 'A' represents the temperature of the heat tracing band 42, and the letter 'B' represents the temperature of water in the water pipeline), the GPRS module 32 is in real-time communication with the embedded microprocessor 31 and transmits single-point information to be finally transmitted to the cloud server 5.
Example two
As shown in fig. 4, the invention further discloses a temperature control and monitoring method for the heat tracing band 42 of the water pipeline, which utilizes the temperature control and monitoring system for the heat tracing band 42 of the water pipeline to control and detect, and comprises the following steps:
the method comprises the following steps: the temperature of the heat tracing band 42 and the temperature of the water pipeline are collected in real time through a double-path temperature sensor and are displayed through a nixie tube;
step two: judging whether the temperature values of the two paths reach a set threshold value, if so, executing a third step, otherwise, executing a fourth step;
step three: the relay 41 is driven to disconnect the heat tracing band 42, and the heating of the water pipeline is stopped;
step four: the driving relay 41 is communicated with the heat tracing band 42 to start heating the water pipeline;
step five: the embedded microprocessor 31 transmits the temperature data and the system information to the GPRS module 32 through a serial port, and the GPRS module 32 packs the data and remotely transmits the data to the cloud server 5;
step six: and returning to the first step.
The invention provides a temperature control and monitoring technology for a heat tracing band of a water delivery pipeline, which achieves the aim of controlling the temperature of the water delivery pipeline by controlling the working state of the heat tracing band 42 enveloped on the water delivery pipeline. The problem of frost cracking of water pipes in cold regions can be solved, water conveying pipelines are protected, and water conveying efficiency is improved. And a networking technology is provided, so that a fault point can be monitored and judged in real time aiming at a large-area water conveying pipeline, the fault can be eliminated accurately and quickly, the fault diagnosis rate of the water conveying pipeline can be improved, and the safe use of the heat tracing band 42 can be guaranteed.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A temperature control and monitoring system for a water pipeline heat tracing band is characterized by comprising: power module, signal acquisition module, microprocessor module and load output module, wherein:
the output end of the signal acquisition module is connected to the input end of the ADC of the microprocessor module and is used for acquiring a two-way temperature value of the heat tracing band and the water conveying pipeline;
the load output module is connected to two ends of the heat tracing band and is used for controlling the heating of the heat tracing band;
the microprocessor module comprises an embedded microprocessor, a GPRS module and a man-machine interaction unit, wherein the embedded microprocessor is used for processing double-path temperature value data of the signal acquisition module, issuing commands and communicating data with the GPRS module; the GPRS module is used for remotely transmitting data and transmitting the data to the cloud server; the human-computer interaction unit is used for manual operation and field data reading;
the power supply module is connected to the power supply input ends of the signal acquisition module, the microprocessor module and the load output module and used for providing working power supplies for the signal acquisition module, the microprocessor module and the load output module.
2. The water pipeline heat tracing band temperature control and monitoring system as claimed in claim 1, wherein the human-computer interaction unit comprises a key circuit and a display circuit, and the driving ends of the key circuit and the display circuit are connected to the IO pin of the embedded microprocessor.
3. The water pipe heat tracing band temperature control and monitoring system as claimed in claim 1, wherein the load output module is controlled by using a large capacity relay, and the heat tracing band is connected to an output interface of the relay.
4. The water pipeline heat tracing band temperature control and monitoring system according to claim 1, wherein the signal acquisition module comprises a temperature acquisition unit and a signal conversion circuit, an output end of the temperature acquisition unit is connected to an input end of the signal conversion circuit, and an output end of the signal conversion circuit is connected to an input end of an ADC pin of the embedded microprocessor.
5. The system for controlling and monitoring the temperature of the heat tracing band of the water conveying pipeline according to claim 4, wherein the GPRS module is provided with a plurality of working points, each working point is used for uploading local temperature data to the cloud server, and the working points are used for forming a networking structure so as to ensure that the working state of the heat tracing band is monitored in real time, and thus multi-point state analysis of the whole system is achieved.
6. The system for controlling and monitoring the temperature of the heat tracing band of the water pipeline according to claim 5, wherein the temperature acquisition unit adopts a two-way temperature sensor and is used for detecting and acquiring the temperatures of the heat tracing band and the water pipeline, sending detection data to a cloud server so as to analyze the temperature data through a central console, comparing the temperature data with a set threshold of a user, judging the temperature data to be a driving mark when the temperature data is lower than or higher than the set threshold, sending driving mark information, and performing output operation;
when the temperature value is lower than a set threshold value, the load output module is driven to enable the heat tracing band to work and start heating;
and when the temperature value is higher than the set threshold value, the load output module is disconnected, the energy-losing tracing band is disabled, the heating is stopped, and the natural cooling is started.
7. The water pipe heat tracing band temperature control and monitoring system according to claim 1, wherein one path of the two paths of temperature detection sensors is a digital temperature sensor, and the other path of the two paths of temperature detection sensors is a liquid temperature transmitter, wherein:
the temperature detection end of the digital temperature sensor is closely attached to the surface of the heat tracing band and used for detecting the temperature of the heat tracing band, and the digital output end is connected with a temperature sensor interface reserved in the core unit;
the liquid temperature transmitter is arranged in the water conveying pipeline and used for detecting the temperature of water in the water conveying pipeline, the signal output end is connected to the reserved interface of the other temperature sensor, and the signal is acquired and amplified through the hardware circuit and then sent to the microprocessor for analysis and processing.
8. The water pipe heat tracing band temperature control and monitoring system according to claim 1, wherein the power supply module comprises a rectification circuit and a voltage reduction circuit, wherein:
the input end of the rectifying circuit is connected to the mains supply, and the output end of the rectifying circuit is connected to the input end of the voltage reduction circuit;
the input end of the voltage reduction circuit is connected to the output end of the rectification circuit, and the output end of the voltage reduction circuit is connected to the power input ends of the microprocessor module and the signal acquisition module.
9. A method for controlling and monitoring the temperature of the heat tracing band of the water pipeline, which is characterized in that the system for controlling and monitoring the temperature of the heat tracing band of the water pipeline according to any one of the claims 1 to 8 is used for controlling and detecting, and comprises the following steps:
the method comprises the following steps: the temperature of the heat tracing band and the temperature of the water delivery pipeline are collected in real time through a double-path temperature sensor and are displayed through a nixie tube;
step two: judging whether the temperature values of the two paths reach a set threshold value, if so, executing a third step, otherwise, executing a fourth step;
step three: the relay is driven to disconnect the heat tracing band, and the heating of the water pipeline is stopped;
step four: the driving relay is communicated with the heat tracing band to start heating the water pipeline;
step five: the embedded microprocessor transmits the temperature data and the system information to the GPRS module through a serial port, and the GPRS module packs the data and remotely transmits the data to the cloud server;
step six: and returning to the step one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210446438.7A CN114857501A (en) | 2022-04-26 | 2022-04-26 | Water pipeline heat tracing band temperature control and monitoring system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210446438.7A CN114857501A (en) | 2022-04-26 | 2022-04-26 | Water pipeline heat tracing band temperature control and monitoring system and method thereof |
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2022
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| CN204731657U (en) * | 2015-05-14 | 2015-10-28 | 东莞市光为电器有限公司 | For the constant temperature control circuit of electric calorifie installation |
| US20160334815A1 (en) * | 2015-05-14 | 2016-11-17 | Dongguan City Sinoshine Technology Co., Ltd. | Constant-temperature controlled circuit for an electric heating device |
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| CN209911843U (en) * | 2019-01-18 | 2020-01-07 | 广东铂尼因节能设备有限公司 | Accompany tropical detection control device |
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| CN112731991A (en) * | 2020-12-15 | 2021-04-30 | 南京熊猫电子股份有限公司 | Power station water pipeline temperature control method |
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