Intelligent online monitoring of heat tracing systems

Abstract

The application discloses an intelligent online monitoring heat tracing system and relates to the technical field of electric heat tracing.The application comprises a hardware system and a software system; the hardware system is used for collecting the temperature of a pipeline, and then connecting the temperature data to a temperature controller with data storage and transmission functions; the temperature controller demodulates the optical signal with information to obtain the distributed temperature along the pipeline; the application can monitor the temperature of the whole pipeline in real time, and the long-distance temperature signals of multiple measuring points are transmitted to a monitoring end; a configuration screen picture can display the signals of multiple measuring points of the whole pipeline; a smart air switch is used for the heat tracing power supply; the smart air switch can monitor the current, power, overload and other data of the heat tracing band in real time, and transmit the data to the monitoring end; an on-line inspection personnel can monitor the parameters of the heat tracing, remotely control the switch of the heat tracing, prevent the pipeline fluid from freezing or boiling, and greatly reduce the workload of the inspection personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric heat tracing, in particular to an intelligent online monitoring heat tracing system. BACKGROUND

[0002] Electric heat tracing is widely used as an effective pipeline heat preservation and anti-freezing scheme. Its working principle is to emit a certain amount of heat through heat tracing media, and to supplement the loss of the heat tracing pipeline through direct or indirect heat exchange to achieve the normal working requirements of temperature rise, heat preservation or anti-freezing. In China, the heat tracing of process pipelines and tank containers mostly adopts traditional steam or hot water heat tracing. Electric heat tracing uses electric heat energy to supplement the heat loss of the heat tracing body in the process to maintain the most reasonable process temperature of the flowing medium, and it is a high-tech product. Electric heat tracing is uniform heat release along the length direction of the pipeline or the large area of the tank volume, which is different from electric heat tracing with high heat load concentrated in a point or a small area; electric heat tracing has a small temperature gradient and a long heat stable time, and is suitable for long-term use, and the required heat (electric power) is much lower than that of electric heating. Electric heat tracing has the advantages of high heat efficiency, energy saving, simple design, convenient installation, no pollution, long service life, remote control and automatic control, etc., and is the technical development direction to replace steam and hot water heat tracing, and is a national key energy-saving project.

[0003] Most of the existing pipeline heat tracing uses a single temperature sensing probe to detect temperature, which has great limitations and can only detect the temperature of the heat tracing pipeline in a small range near a single measuring point. When the temperature of the measuring point reaches the preset value, the entire heat tracing band stops working, resulting in many pipelines being frozen due to non-working heat tracing during the severe winter period, and the inspection personnel need to regularly check the pipeline conditions, greatly increasing the workload of the personnel. Therefore, an intelligent online monitoring heat tracing system is proposed to solve the above problems. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that most pipeline heat tracing uses a single temperature sensing probe to detect temperature, which has great limitations and can only detect the temperature of the heat tracing pipeline in a small range near a single measuring point. When the temperature of the measuring point reaches the preset value, the entire heat tracing band stops working, resulting in many pipelines being frozen due to non-working heat tracing during the severe winter period, and the inspection personnel need to regularly check the pipeline conditions, greatly increasing the workload of the personnel, and an intelligent online monitoring heat tracing system is proposed.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] An intelligent online monitoring heat tracing system includes a hardware system and a software system.

[0007] The hardware system is used for collecting the temperature of the pipeline, and then connecting the temperature data to the temperature controller with data storage and transmission function, the temperature controller demodulates the optical signal with information to obtain the distributed temperature along the pipeline, and transmits the data to the monitoring end through the communication port to generate intuitive picture text screen for user query and browsing.

[0008] The software system is used for converting various source programs written by the user in software language into target programs that can be recognized and run by the computer, collecting the data of the pipeline temperature, and alarming according to the threshold set by the system.

[0009] Preferably, the hardware system comprises a monitoring end, a smart switch, a temperature controller and a distributed temperature sensing cable.

[0010] The monitoring end is used for receiving the data transmitted by the temperature controller and processing the data into a table form for display.

[0011] The smart switch is used for real-time monitoring of the current, power, overload and other data of the heat tracing band, and transmitting the data to the monitoring end.

[0012] The temperature controller is used for receiving the signal detected by the distributed temperature sensing cable, demodulating the optical signal with information to display the distributed temperature of the pipeline.

[0013] The distributed temperature sensing cable is used for real-time monitoring of the temperature of the whole pipeline, and transmitting the temperature signals of long distance and multiple measuring points to the monitoring end.

[0014] Preferably, the software system comprises a central control module, an alarm module, a software monitoring module, a detection module and a display module.

[0015] The central control module is used for setting each module of the whole system and processing the data sent by each module.

[0016] The alarm module is used for comparing the threshold set by the system and the received data, and alarming according to the comparison result.

[0017] The software monitoring module is used for directly depicting the required report and graphical form to realize each function of the process monitoring occasion scheme.

[0018] The detection module is used for patrolling and collecting all power consumption parameters of the power circuit, making accurate early warning and accurate protection of power failure according to the collected data, and combining remote control, timing control technology and electric power big data.

[0019] The display module is used for displaying the data detected by the software system and the received data in the form of chart.

[0020] Preferably, the software system further comprises a sensor module, a signal transmission module and a data acquisition module;

[0021] The sensor module is used for distributed detection of pipe temperature and converting the detected temperature into point signals;

[0022] The signal transmission module is used for transmitting the point signals detected by the sensor module;

[0023] The data acquisition module is used for remote transmission of the electrical signals generated by the sensor module through cables, transmission of the signals to the temperature controller, direct digital quantity recognition by the temperature controller and conversion into physical quantities.

[0024] Preferably, the software system further comprises a software management module, a database and a real-time monitoring module;

[0025] The software management module is used for storing various types of data through appropriate organization according to the characteristics of each monitoring project, obtaining data from the data system and providing the right of calling data for different users;

[0026] The database is used for defining various data and providing data support for signal acquisition and conversion, alarm, display and other tasks in the online running software;

[0027] The real-time monitoring module is used for monitoring the running of the whole software system, providing the right of calling various pictures and starting print records for personnel and providing the right of parameter setting and modification for personnel.

[0028] Preferably, the software system further has an automatic correction function;

[0029] The automatic correction function provides real-time self-checking function for the equipment, and when the equipment is damaged, the software system controls the alarm module to work to remind the staff to locate and repair, in addition, the built-in data correction unit can correct the returned temperature data in real time and can be interconnected with other control systems.

[0030] Preferably, the software monitoring module comprises database configuration, graphic configuration and report configuration software, and the basic functions are as follows:

[0031] The database configuration is used to define various data, and signal acquisition and conversion, alarm, display and other tasks in the online running software rely on this part of data for running;

[0032] The graphic configuration: the graphic configuration tool software can conveniently draw various general layout diagrams, flowcharts and working condition diagrams required by the application system, and the graphic configuration software can generate various dynamic display modes.

[0033] The report configuration tool provides a graphical report generation tool that offers static table creation and dynamic printing functions. The report configuration process adopts a "what you see is what you get" approach, which can easily generate Chinese class reports, daily reports, monthly reports, annual reports and other statistical reports.

[0034] Preferably, the formula for calculating the pipeline heat tracing power of the software system is as follows:

[0035]

[0036] In the formula: q n c is the mass flow rate of the fluid inside the pipe; p t1 is the specific isobaric heat capacity of the fluid inside the pipe; t2 is the terminal temperature of the fluid inside the pipe; t1 is the initial temperature of the fluid inside the pipe; K is the compensation coefficient; l is the length of the pipe being heated; t f t represents the temperature of the fluid inside the pipe. a λ is the temperature of the air surrounding the pipe; D1 is the outer diameter of the pipe insulation layer; D0 is the outer diameter of the pipe; λ is the thermal conductivity of the insulation material; α1 is the surface heat transfer coefficient between the insulation layer surface and the surrounding air; P is the heat tracing power.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] 1. This invention can monitor the temperature of the entire pipeline in real time, and transmit temperature signals from multiple measuring points over a long distance to the monitoring terminal. The configuration screen can display the signals from multiple measuring points of the entire pipeline. The heat tracing power supply adopts a smart air switch, which can monitor the current, power, and overload status of the heat tracing cable in real time and transmit the data to the monitoring terminal. Inspection personnel can monitor the parameters of the heat tracing cable online and remotely control the switch of the heat tracing cable to prevent the fluid in the pipeline from freezing or boiling, greatly reducing the workload of inspection personnel.

[0039] 2. The present invention has two outstanding advantages for long-distance measurement and suitability for remote monitoring cables: large data transmission capacity and low loss. It can achieve long-distance remote monitoring without the need for repeaters. It has a long lifespan and low cost. Considering the cost of the sensor itself and future maintenance costs, the use of distributed anti-interference sensors can greatly reduce the final operating cost of the entire project. The system has a self-testing function, which can monitor its own operation in real time and output fault alarm audible and visual signals. Attached Figure Description

[0040] Fig. 1 This is a schematic diagram of the hardware system of an intelligent online monitoring heat tracing system proposed in this invention;

[0041] Fig. 2 This is a schematic diagram of the software system of an intelligent online monitoring heat tracing system proposed in this invention. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0043] Referring to Figs. 1-2 An intelligent online monitoring tracing system comprises a hardware system and a software system.

[0044] The hardware system is used for collecting the temperature of the pipeline, and then connecting the temperature data to the temperature controller with data storage and transmission functions. The temperature controller demodulates the optical signal with information to obtain the distributed temperature along the pipeline, and transmits the data to the monitoring end through the communication port to generate intuitive picture and text images for user query and browsing.

[0045] The software system is used for converting various source programs written by the user in software language into target programs that can be recognized and run by the computer, collecting the data of the pipeline temperature, and alarming according to the threshold set by the system.

[0046] The hardware system comprises a monitoring end, a smart switch, a temperature controller and a distributed temperature sensing cable.

[0047] The monitoring end is used for receiving the data transmitted by the temperature controller, and processing the data into a table form for display.

[0048] The smart switch is used for real-time monitoring of the current, power, overload and other data of the tracing band, and transmitting the data to the monitoring end.

[0049] The temperature controller is used for receiving the signals detected by the distributed temperature sensing cable, demodulating the optical signal with information to display the distributed temperature of the pipeline.

[0050] The distributed temperature sensing cable is used for real-time monitoring of the temperature of the whole pipeline, and transmitting the temperature signals of long-distance and multiple measuring points to the monitoring end.

[0051] The software system comprises a central control module, an alarm module, a software monitoring module, a detection module and a display module.

[0052] The central control module is used for setting each module of the whole system, and processing the data sent by each module.

[0053] The alarm module is used for comparing the threshold set by the system and the received data, and alarming according to the comparison result.

[0054] The software monitoring module is used for directly depicting the required report and graphic form to realize each function of the process monitoring occasion scheme.

[0055] The detection module is used for inspection and collection of all power consumption parameters of the power circuit, and makes accurate early warning and accurate protection of power consumption failure according to the collected data, and also utilizes remote control, timing control technology and power big data;

[0056] The display module is used for displaying the data detected by the software system and the received data in the form of a chart.

[0057] The software system further comprises a sensor module, a signal transmission module and a data acquisition module.

[0058] The sensor module is used for distributed detection of the pipe temperature and converting the measured temperature into a point signal.

[0059] The signal transmission module is used for transmitting the point signal detected by the sensor module.

[0060] The data acquisition module is used for remote transmission of the electric signal generated by the sensor module through a cable, and transmitting the signal to a temperature controller, which directly identifies the digital quantity and converts it into a physical quantity.

[0061] The software system further comprises a software management module, a database and a real-time monitoring module.

[0062] The software management module is used for storing different types of data through appropriate organization according to the characteristics of each monitoring project, and obtaining data from the data system, and providing different users with the right to call data.

[0063] The database is used for defining various data, and providing data support for signal acquisition and conversion, alarm, display and other tasks in the online running software.

[0064] The real-time monitoring module is used for monitoring the operation of the entire software system, and providing corresponding permissions for personnel to call various pictures and start printing records, and also providing personnel with the permission to set and modify parameters.

[0065] The software system further has an automatic correction function.

[0066] The automatic correction function provides real-time self-checking function for the equipment, and when the equipment is damaged, the software system controls the alarm module to work to remind the staff to locate and repair, in addition, the built-in data correction unit can correct the temperature data collected in real time, and can also be interconnected with other control systems.

[0067] The software monitoring module comprises database configuration, graphic configuration and report configuration software, and the basic functions are as follows:

[0068] Database configuration: used to define the data, the signal acquisition and conversion, alarm, display and other tasks in the online running software depend on the data running;

[0069] Graphic configuration: graphic configuration tool software can easily draw various general view, flow chart and working condition chart required by application system, and graphic configuration software can generate various dynamic display modes.

[0070] Report configuration: report configuration provides a graphical report generation tool software, provides static tabulation and dynamic printing functions, and the configuration process of the report adopts "what you see is what you get" mode, so that Chinese class report, daily report, monthly report, annual report and other statistical reports can be easily generated.

[0071] Among them, the pipeline heat tracing power calculation formula of the software system is as follows:

[0072]

[0073] In the formula: q n is the mass flow of the fluid in the pipe; c p is the specific constant pressure heat capacity of the fluid in the pipe; t2 is the terminal temperature of the fluid in the pipe; t1 is the initial temperature of the fluid in the pipe; K is the compensation coefficient; l is the length of the heated pipe; t f is the temperature of the fluid in the pipe; t a is the temperature of the pipe surrounding air; D1 is the outer diameter of the pipe insulation layer; D0 is the outer diameter of the pipe; λ is the thermal conductivity of the insulation material; α1 is the surface heat transfer coefficient between the surface of the insulation layer and the surrounding air; P is the heat tracing power.

[0074] In the application, when in use, first, multiple temperature overrun alarms are set, then the intelligent switch is turned on, the distributed temperature sensing cable starts to collect the pipeline temperature, the collected temperature signal is sent to the temperature controller, the temperature controller converts the signal into physical quantity for display, when the monitored temperature signal exceeds the set temperature threshold, the alarm module starts to work and displays on the monitoring end.

[0075] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An intelligent online monitoring heat tracing system, characterized in that, The hardware system and the software system are comprised; The hardware system is used for collecting the temperature of the pipeline, and then connecting the temperature data to the temperature controller with data storage and transmission function, the temperature controller demodulates the optical signal with information to obtain the distributed temperature along the pipeline, and transmits the data to the monitoring end through the communication port to generate intuitive picture and text screen for user to query and browse; The software system is used for converting various source programs written by user in software language into target programs that can be recognized and run by computer, collecting the data of the pipeline temperature, and alarming according to the threshold value set by the system; The software system comprises a central control module, an alarm module, a software monitoring module, a detection module and a display module; The central control module is used for setting each module of the whole system and processing the data sent by each module; The alarm module is used for comparing the threshold value set by the system and the received data, and alarming according to the comparison result; The software monitoring module is used for directly depicting the required report and graphic form to realize each function of the process monitoring occasion scheme; The detection module is used for patrolling and collecting all power consumption parameters of the power circuit, making accurate early warning and accurate protection for power failure according to the collected data, and combining remote control and timing control technology with power big data; The display module is used for displaying the data detected by the software system and the received data in the form of chart; The software system also has an automatic correction function; The automatic correction function provides real-time self-checking function for the equipment, when the equipment is damaged, the software system controls the alarm module to work to remind the staff to locate and repair, in addition, the built-in data correction unit can correct the collected temperature data in real time, and can also be interconnected with other control systems; The software monitoring module comprises database configuration, graphic configuration and report configuration software, and the basic functions are as follows: The database configuration is used to define various data, and the signal collection and conversion, alarm, display and other tasks in the online running software depend on the operation of this part of data; The graphic configuration: the graphic configuration tool software can conveniently draw various general view, flow chart and working condition chart required by the application system, and the graphic configuration software can generate various dynamic display modes; The report configuration: the report configuration provides a graphical report generation tool software, which provides static tabulation and dynamic printing function, and the configuration process of the report adopts "what you see is what you get" mode, which can conveniently generate Chinese class report, daily report, monthly report, annual report and other statistical reports; The pipeline heat tracing power calculation formula of the software system is as follows: ; wherein: is the mass flow rate of the fluid in the pipe; is the specific constant pressure heat capacity of the fluid in the pipe; is the terminal temperature of the fluid in the pipe; is the initial temperature of the fluid in the pipe; K is the compensation factor; l is the length of the pipe being traced; is the temperature of the fluid in the pipe; is the ambient air temperature around the pipe; is the outer diameter of the pipe insulation; is the outer diameter of the pipe; λ is the thermal conductivity of the insulation material; is the surface heat transfer coefficient between the surface of the insulation and the ambient air; P is the tracing power.

2. The intelligent online monitoring heat tracing system of claim 1, wherein, The hardware system comprises a monitoring end, a smart switch, a temperature controller and a distributed temperature sensing cable; The monitoring end is used for receiving the data transmitted by the temperature controller and processing the data into table form for display; The smart switch is used for real-time monitoring of the current, power and overload data of the heat tracing band, and transmitting the data to the monitoring end; The temperature controller is used for receiving the signals detected by the distributed temperature sensing cable, demodulating the optical signal with information to display the distributed temperature of the pipeline; The distributed temperature sensing cable is used for monitoring temperature of the whole pipeline in real time, and sending temperature signals of long distance and multiple measuring points to the monitoring end.

3. The intelligent online monitoring heat tracing system of claim 2, wherein, The software system further comprises a sensor module, a signal transmission module and a data acquisition module. The sensor module is used for distributed detection of pipeline temperature and conversion of measured temperature quantity into point signals. The signal transmission module is used for transmission of point signals detected by the sensor module. The data acquisition module is used for remote transmission of electric signals generated by the sensor module through a cable, transmission of the signals to the temperature controller, direct digital quantity identification by the temperature controller and conversion into physical quantity.

4. The intelligent online monitoring heat tracing system of claim 1, wherein, The software system further comprises a software management module, a database and a real-time monitoring module. The software management module is used for storage of various types of data through appropriate organization according to characteristics of various monitoring projects, acquisition of data from the data system, provision of calling data permission for different users, definition of various data and provision of data support for signal acquisition and conversion, alarm, display tasks in the online running software. The real-time monitoring module is used for monitoring of running of the whole software system, provision of corresponding permission for calling various pictures and starting printing records by personnel, provision of permission for parameter setting and modification by personnel. ​

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