CN-122015178-A - Intelligent operation system and method of electric heating pipeline and industrial fluid conveying pipe network

CN122015178ACN 122015178 ACN122015178 ACN 122015178ACN-122015178-A

Abstract

The intelligent operation system comprises a pipeline, an electric heating unit, a distributed temperature monitoring unit, a power supply and communication interface, a pipeline heat management controller and a power distribution and switch execution module, wherein the electric heating unit is used for heating medium in the pipeline, the distributed temperature monitoring unit is used for collecting real-time data of the medium temperature in the pipeline, the pipeline heat management controller is used for receiving processing temperature data and comparing the processing temperature data with a target temperature range to send out a temperature regulation instruction, and the power distribution and switch execution module is connected with the pipeline heat management controller to execute the temperature regulation instruction.

Inventors

ZHANG TAO
LI YONGWU
YANG MIN

Assignees

光之科技(宁波)有限公司

Dates

Publication Date: 20260512
Application Date: 20260126

Claims (10)

1. An intelligent operation system of an electric heating pipeline, which is characterized by comprising: a conduit for transporting a target medium; The electric heating unit is integrated in the pipe wall or attached to the outer wall or the inner wall of the pipeline body and is used for heating the pipeline and/or the medium inside the pipeline; The distributed temperature monitoring units are arranged at intervals along the length direction of the pipeline body and are used for collecting real-time data of the temperature of the outer wall of the pipeline and/or the temperature of a medium in the pipeline; the power supply and communication interface is connected with at least one of an external power supply network, a standby generator and an energy storage device and is used for providing electric energy and a data communication link; The pipeline thermal management controller is in communication connection with the distributed temperature monitoring units and is used for receiving and processing temperature data; The power distribution and switch execution module is connected with the pipeline heat management controller and is respectively and electrically connected with the power supply and communication interface and the electric heating unit; the pipeline heat management controller is used for setting a target temperature range maintained by the pipeline according to physical property parameters and process requirements of a target medium, wherein the target temperature range comprises a first lower-limit temperature threshold value for preventing a coagulation pipe or maintaining fluidity and a second upper-limit temperature threshold value for preventing medium overheating or energy waste; the pipeline thermal management controller is used for comparing the real-time temperature acquired by the distributed temperature monitoring unit with the first temperature threshold and the second temperature threshold; When the real-time temperature of any monitoring point is lower than the first temperature threshold value, the pipeline heat management controller is used for generating a heating instruction aiming at a corresponding pipeline section or the whole world, and the power distribution and switch execution module is used for receiving the heating instruction to start or enhance the power output of the electric heating unit; When the real-time temperature of any monitoring point is higher than the second temperature threshold, the pipeline heat management controller is used for generating a power-reducing or heating-stopping instruction for the corresponding pipeline section or the whole world, and the power distribution and switch execution module is used for receiving the power-reducing or heating-stopping instruction to reduce or cut off the power output of the electric heating unit; When the temperature is between the first temperature threshold and the second temperature threshold, the pipeline heat management controller is used for generating a heat preservation maintaining instruction, and the power distribution and switch execution module is used for receiving the heat preservation maintaining instruction to control the electric heating unit to maintain power operation.
2. The intelligent operation system of an electric heating pipeline according to claim 1, wherein: the electric heating unit is a heat tracing belt, an electric heating wire layer or an electric heating film which are arranged and controlled in a sectionalized way along the length direction of the pipeline, and each sectionalized way is connected with a corresponding switch submodule in the power distribution and switch execution module; And the pipeline heat management controller is used for independently controlling the start and stop and the heating power of each segmented electric heating unit according to the segmented temperature data fed back by the distributed temperature monitoring unit.
3. The intelligent operation system of an electric heating pipeline according to claim 1, further comprising a flow detection unit, which is communicatively connected to the pipeline thermal management controller, and is disposed on the pipeline, and is configured to detect a real-time flow rate or flow of a medium; the pipeline heat management controller is used for dynamically calculating theoretical heat load required by maintaining target temperature of the pipeline according to the medium flow rate or flow rate, specific heat capacity and inlet temperature detected by the flow detection unit, and accordingly correcting a power control instruction of the electric heating unit, adaptively increasing heating power compensation when the flow rate is high, and reducing power or switching to an anti-condensation mode when the flow is stagnation or cutoff.
4. The intelligent operation system of an electrically heated conduit according to claim 1, further comprising an ambient temperature sensor disposed in the conduit external environment in communication with the conduit thermal management controller; The pipeline heat management controller is used for evaluating the natural heat dissipation rate of the pipeline by combining the environmental temperature data and the thermal resistance parameters of the pipeline heat preservation layer, and predictively adjusting the heating strategy according to the natural heat dissipation rate, and increasing the temperature of the pipeline in advance before the environmental temperature suddenly drops or reducing the heating power in advance when the environmental temperature rises.
5. The intelligent operation system of an electric heating pipeline according to claim 1 or 4, wherein: The pipeline heat management controller stores pipeline heat preservation structure information; The controller is used for integrating the real-time medium temperature, the target temperature, the environment temperature and the heat loss coefficient of the heat preservation structure when calculating the heating power, and realizing closed-loop feedback and feedforward composite control based on a heat balance model so as to minimize the total energy consumption of the system.
6. The intelligent operation system of an electric heating pipeline according to claim 1, wherein: The pipeline heat management controller is provided with a multi-stage temperature threshold, wherein the multi-stage temperature threshold comprises a first temperature threshold used for starting conventional heating, a lower emergency threshold used for triggering intensified heating, a second temperature threshold used for switching to a heat preservation mode and a higher safety threshold used for triggering overtemperature alarm; The controller executes control and alarm strategies with different priorities and intensities according to the triggered different thresholds.
7. The intelligent operation system of an electric heating pipeline according to claim 1, wherein: The pipeline heat management controller is also used for executing a preheating program before the system is started or the medium is conveyed in a recovery mode, the preheating program comprises the steps of calculating the energy and time required by preheating based on the initial temperature, the target temperature and the pipeline heat capacity, and controlling the electric heating unit to uniformly heat the pipeline to a starting temperature range allowed by the process at a safe rate.
8. The intelligent operation system of an electric heating pipeline according to claim 1, wherein: The system also comprises an equipment state monitoring and communication module, wherein the equipment state monitoring and communication module is used for monitoring the current, insulation resistance and grounding state of each section of the electric heating unit and the contact state of the switch executing module; The pipeline thermal management controller is used for diagnosing abnormal states and reporting fault positioning information, energy consumption data and running states to the remote monitoring center through the power supply and communication interface.
9. An intelligent operation method of an electric heating pipeline applied to the system of any one of claims 1 to 8, characterized by comprising the following steps: s1, setting a target temperature in a controller to be maintained within a safety threshold between a first temperature threshold and a second temperature threshold according to the characteristics of a conveying medium and process requirements; s2, continuously acquiring temperature data through distributed temperature sensors along the pipeline, and acquiring related parameters through a flowmeter and an environment temperature sensor; S3, the controller synthesizes all input parameters and judges whether heating and required heat load are needed or not; s4, if heating is needed, starting or closing an electric heating unit of the corresponding pipe section according to the position of the temperature abnormal point, and dynamically adjusting heating power based on a heat balance model; S5, continuously monitoring the temperature change trend and the electrical parameters of the equipment in the heating process to realize closed-loop control; and S6, when the temperature is stabilized within the target range, adjusting the heating power to a maintenance level matched with the current heat loss, and if the temperature exceeds the temperature or fails, executing power reduction, shutdown or alarm operation.
10. An industrial fluid conveying pipe network, which is characterized by comprising the intelligent operation system of the electric heating pipeline as claimed in any one of claims 1-8, wherein the conveying pipe network is used for guaranteeing that a medium in the pipeline is always in a safe and economic temperature range under a complex environment and variable working conditions, preventing condensation, freezing or overheating, and realizing operation energy efficiency optimization.

Description

Intelligent operation system and method of electric heating pipeline and industrial fluid conveying pipe network Technical Field The invention relates to the technical field of pipeline heating, in particular to an intelligent operation system and method of an electric heating pipeline and an industrial fluid conveying pipe network. Background The traditional pipeline is generally used for conveying liquid medium, the traditional floor heating pipeline is used for conveying steam or hot water heat, but the steam or hot water heat depends on a boiler, the loss of the heat medium in the conveying process is large, the energy utilization rate is often lower than 30%, and serious waste is caused. The pipeline is damaged due to the problem of uneven temperature heating, the environment is polluted due to damage and leakage of the pipeline, the high-temperature pipeline has scalding risk, the maintenance cost is high, and the pipeline is blocked due to condensation or freezing of petroleum crude oil due to low temperature. In addition, in order to maintain the temperature of the pipeline, a boiler, an external circulation pipeline and the like are required to be matched, the construction period is long, and the flexibility is poor. Disclosure of Invention The embodiment of the invention provides an intelligent operation system and method of an electric heating pipeline and an industrial fluid conveying pipe network, which are used for solving one or more technical problems in the prior art. In a first aspect, an embodiment of the present invention provides an intelligent operation system for an electric heating pipeline, including: a conduit for transporting a target medium; The electric heating unit is integrated in the pipe wall or attached to the outer wall or the inner wall of the pipeline body and is used for heating the pipeline and/or the medium inside the pipeline; The distributed temperature monitoring units are arranged at intervals along the length direction of the pipeline body and are used for collecting real-time data of the temperature of the outer wall of the pipeline and/or the temperature of a medium in the pipeline; the power supply and communication interface is connected with at least one of an external power supply network, a standby generator and an energy storage device and is used for providing electric energy and a data communication link; The pipeline thermal management controller is in communication connection with the distributed temperature monitoring units and is used for receiving and processing temperature data; The power distribution and switch execution module is connected with the pipeline heat management controller and is respectively and electrically connected with the power supply and communication interface and the electric heating unit; the pipeline heat management controller is used for setting a target temperature range maintained by the pipeline according to physical property parameters and process requirements of a target medium, wherein the target temperature range comprises a first lower-limit temperature threshold value for preventing a coagulation pipe or maintaining fluidity and a second upper-limit temperature threshold value for preventing medium overheating or energy waste; the pipeline thermal management controller is used for comparing the real-time temperature acquired by the distributed temperature monitoring unit with the first temperature threshold and the second temperature threshold; When the real-time temperature of any monitoring point is lower than the first temperature threshold value, the pipeline heat management controller is used for generating a heating instruction aiming at a corresponding pipeline section or the whole world, and the power distribution and switch execution module is used for receiving the heating instruction to start or enhance the power output of the electric heating unit; When the real-time temperature of any monitoring point is higher than the second temperature threshold, the pipeline heat management controller is used for generating a power-reducing or heating-stopping instruction for the corresponding pipeline section or the whole world, and the power distribution and switch execution module is used for receiving the power-reducing or heating-stopping instruction to reduce or cut off the power output of the electric heating unit; When the temperature is between the first temperature threshold and the second temperature threshold, the pipeline heat management controller is used for generating a heat preservation maintaining instruction, and the power distribution and switch execution module is used for receiving the heat preservation maintaining instruction to control the electric heating unit to maintain power operation. In a preferred embodiment, the electric heating unit is a heat tracing belt, an electric heating wire layer or an electric heating film which are arranged and controlled in a sectional manner along the le