A pipeline heating control system and method thereof

Abstract

The present invention discloses a pipeline heating control system and a method thereof, which relates to the technical field of temperature control. The pipeline heating control system includes an information acquisition module, a medium heating control module, a pipeline heating module and a medium conveying module. The pipeline heating module is arranged on the medium conveying module, and the information acquisition module is arranged in the medium conveying module. The medium heating control module includes a data receiving unit, an outlet liquid temperature prediction unit, a power output calculation unit and a heating control unit. By the medium heating control module, according to the temperature parameter and flow parameter of the medium, the output power of the pipeline heating module is controlled, and further the control of the medium output temperature is realized. While improving the temperature control accuracy, the medium temperature can also be maintained within a preset range, and the output medium does not need to spend a lot of time, or even does not need to spend time to melt and heat the medium to the preset temperature, which greatly improves the processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control, and particularly to a pipeline heating control system and method thereof. Background Art

[0002] In the raw material frying process, usually, cooking oil is first heated to a preset temperature, and then raw materials are put into the frying pan one by one in a specific order and time interval. However, this method has a significant defect: every time after a frying is completed, cold oil needs to be re-injected and waited to be heated to the preset temperature before the next frying can be carried out. This process not only takes a long time but also seriously affects the overall frying efficiency.

[0003] To solve this problem, an improved solution has been proposed in the prior art. This solution adds an oil storage tank and a temporary storage tank and connects the two with a pipeline. Heaters are set in some sections of the pipeline so that when the cooking oil is transported to the temporary storage tank, the oil can be heated during the flowing process. In this way, after the previous frying work is completed, the preheated hot oil in the temporary storage tank can be quickly input into the frying pan, thus greatly shortening the heating time and improving the frying efficiency.

[0004] Although the above technical solution solves the problem of long heating time to a certain extent, it still has the defect of unstable oil temperature control. Specifically, since heat loss inevitably occurs during the storage of cooking oil in the temporary storage tank and the transportation in the pipeline. Therefore, when the oil is output to the frying pan, its temperature is often lower than the preset value. This means that the frying pan still needs to further heat the oil temperature to reach the ideal frying temperature. Summary of the Invention

[0005] Therefore, to solve the above deficiencies, the present invention provides a pipeline heating control system and method thereof here, so that the medium temperature can be maintained within a preset range, and the output medium does not need to spend a large amount of time, or even does not need to spend time to melt and heat the medium to the preset temperature, greatly improving the processing efficiency.

[0006] On the one hand, the present invention provides a pipeline heating control system here, including: an information acquisition module, a medium heating control module, a pipeline heating module, and a medium transportation module. The medium transportation module is used to store and transport the medium. The pipeline heating module is arranged on the medium transportation module, and the medium flowing in the medium transportation module is heated through the pipeline heating module. The information acquisition module is arranged in the medium transportation module, and the temperature parameter and flow parameter of the medium in the medium transportation module are acquired through the information acquisition module. The temperature parameter includes a second temperature parameter, and the flow parameter includes a second flow parameter and a third flow parameter;

[0007] The medium heating control module includes:

[0008] A data receiving unit that can obtain temperature parameters and flow parameters;

[0009] An outlet liquid temperature prediction unit that predicts the outlet liquid temperature based on the second temperature parameter, the second flow parameter, and the third flow parameter to obtain an outlet liquid temperature prediction result;

[0010] A power output calculation unit that calculates a second output power based on the temperature prediction result and the second preset temperature parameter to obtain a second output power calculation result;

[0011] A heating control unit that generates a second power output control signal according to the second output power calculation result and sends the second power output control signal to the pipeline heating module so that the pipeline heating module outputs power according to the second power output control signal.

[0012] Further, the predicting the outlet liquid temperature based on the second temperature parameter, the second flow parameter, and the third flow parameter to obtain an outlet liquid temperature prediction result includes:

[0013] Calculating heat loss based on the second temperature parameter to obtain a heat loss calculation result;

[0014] Predicting the outlet liquid temperature of the medium based on the second flow parameter, the third flow parameter, and the heat loss calculation result to obtain an outlet liquid temperature prediction result.

[0015] Further, the medium transportation module includes:

[0016] An oil storage tank that stores a limited amount of medium;

[0017] A temporary storage tank that is connected to the oil storage tank through a first liquid delivery pipeline;

[0018] A first delivery pump that is arranged at the connection of the first liquid delivery pipeline and the oil storage tank and is respectively connected to the oil storage tank and the first liquid delivery pipeline;

[0019] A second liquid delivery pipeline that is connected to the temporary storage tank, and a second delivery pump is arranged at the connection of the second liquid delivery pipeline and the temporary storage tank. The second delivery pump is respectively connected to the temporary storage tank and the second liquid delivery pipeline;

[0020] Outlet pipelines, at least one group of the outlet pipelines is connected to the second liquid delivery pipeline, a valve is arranged on the outlet pipeline, and the outlet pipeline is connected to the processing equipment;

[0021] The pipeline heating module includes a first heating unit disposed on the first infusion pipeline and a second heating unit disposed on the liquid outlet pipeline. The second heating unit obtains a second power output control signal and outputs power according to the second power output signal.

[0022] In this embodiment, the medium heating control module controls the output power of the pipeline heating module according to the temperature parameter and flow parameter of the medium, thereby controlling the output temperature of the medium. While improving the temperature control accuracy, the medium temperature can also be maintained within a preset range, and the output medium does not need to spend a large amount of time, or even any time, to melt and heat the medium to the preset temperature, which greatly improves the processing efficiency.

[0023] Further, the temperature parameter further includes a first temperature parameter, and the flow parameter further includes a first flow parameter.

[0024] The power output calculation unit also obtains the first temperature parameter and the first flow parameter, calculates the first output power according to the first temperature parameter and the first flow parameter, and obtains the first output power calculation result.

[0025] The heating control unit generates a first power output control signal according to the first output power calculation result, and sends the first power output control signal to the first heating unit, so that the first heating unit outputs power according to the first power output control signal.

[0026] The medium heated by the medium heating control controls the first heating unit to heat the medium output from the storage tank to the temporary storage tank, thereby preheating the medium, and further shortening the heating time of the second heating unit for the medium.

[0027] Further, before generating the second power output control signal according to the second output power calculation result, the heating control unit verifies the second output power calculation result to obtain an output power verification result.

[0028] When the verification is passed, a second power output control signal is generated according to the second output power calculation result.

[0029] If the verification fails, the second output flow rate and the third output flow rate are calculated according to the rated power to obtain the second output flow rate and the third output flow rate.

[0030] The heating control unit generates a flow control signal according to the second output flow rate and the third output flow rate and sends it to the medium conveying module, so that the medium conveying module adjusts the medium flow rate according to the flow control signal.

[0031] Further, the method of output power verification is:

[0032] ;

[0033] Wherein, P is the rated power, with the unit of kilowatt, is the second output power of the second heating unit on the liquid outlet pipe numbered y with the unit of kilowatt; y is the number of the liquid outlet pipe with the valve opened;

[0034] If the above relationship holds, the verification fails; otherwise, the verification passes.

[0035] Furthermore, the calculation methods of the second output flow rate and the third output flow rate are as follows:

[0036] ;

[0037] Wherein, is the third output flow rate of the medium in the liquid outlet pipe numbered y with the unit of cubic millimeters per hour; is the second output flow rate, with the unit of cubic millimeters per hour; ρ is the medium density, with the unit of kilograms per cubic millimeter; c is the specific heat capacity of the medium, with the unit of kilowatt-hours per kilogram per degree Celsius; η is the heating efficiency; T 3 is the second preset temperature, with the unit of degree Celsius; t 3 is the predicted result of the liquid outlet temperature, with the unit of degree Celsius.

[0038] Furthermore, the relationship between the second output flow rate and the third output flow rate is as follows:

[0039] ;

[0040] Wherein, is the third flow rate parameter of the medium in the liquid outlet pipe with the x th group of valves opened, with the unit of cubic millimeters per hour; x is the number of the liquid outlet pipes with the valves opened other than the liquid outlet pipe numbered y .

[0041] By verifying the output power of the second heating unit, it is avoided that after the calculated result of the output power exceeds the rated power, the second heating unit reports an error or operates incorrectly at the rated power, resulting in a decrease in the liquid outlet medium, and the control accuracy of the medium heating temperature is improved.

[0042] On the other hand, the present invention also provides a pipeline heating control method, which is executed by using the above pipeline heating control system. The pipeline heating control method includes:

[0043] Obtain the second temperature parameter, the second flow rate parameter, and the third flow rate parameter, and perform outlet liquid temperature prediction based on the second temperature parameter, the second flow rate parameter, and the third flow rate parameter to obtain the outlet liquid temperature prediction result;

[0044] According to the temperature prediction result and the second preset temperature parameter, perform the second output power calculation to obtain the second output power calculation result;

[0045] Generate a second power output control signal according to the second output power calculation result, and send the second power output control signal to the pipeline heating module so that the pipeline heating module outputs power according to the second power output signal.

[0046] The present invention has the following advantages:

[0047] In the present invention, the medium heating control module controls the output power of the pipeline heating module according to the temperature parameter and the flow rate parameter of the medium, thereby realizing the control of the outlet temperature of the medium. While improving the temperature control accuracy, the medium temperature can be maintained within the preset range, and the output medium does not need to spend a lot of time, or even does not need to spend time to melt and heat the medium to the preset temperature, which greatly improves the processing efficiency. Description of the Drawings

[0048] Figure 1 is a schematic logical structure diagram of a pipeline heating control system;

[0049] Figure 2 is Figure 1 a schematic logical structure diagram of the medium heating control module in the pipeline heating control system shown;

[0050] Figure 3 is Figure 1 a schematic cooperation diagram of the medium delivery module and the pipeline heating module in the pipeline heating control system shown;

[0051] In the figure:

[0052] 100, information acquisition module;

[0053] 200, pipeline heating module; 210, first heating unit; 220, second heating unit;

[0054] 300, medium heating control module; 310, data receiving unit; 320, power output calculation unit; 330, outlet liquid temperature prediction unit; 340, heating control unit;

[0055] 400, Medium transportation module; 410, Oil storage tank; 420, First transfer pump; 430, First liquid delivery pipeline; 440, Temporary storage tank; 450, Second transfer pump; 460, Liquid outlet pipeline; 470, Second liquid delivery pipeline; 480, Valve; 490, Processing equipment. Detailed implementation manners

[0056] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0057] In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device.

[0058] As described in the background art, during the storage of edible oil in the temporary storage tank and the transportation in the pipeline, heat dissipation will inevitably occur. Therefore, when the oil is output to the wok, its temperature is often already lower than the preset value. This means that the wok still needs to further heat the oil temperature to reach the ideal frying temperature; for this reason, the present invention provides the following embodiments.

[0059] Embodiment 1:

[0060] Therefore, in order to solve the above technical problems of the prior art, the present embodiment provides a pipeline heating control system as Figure 1 shown. The pipeline heating control system includes an information acquisition module 100, a medium heating control module 300, a pipeline heating module 200, and a medium transportation module 400. The medium transportation module is used to store and transport the medium. The pipeline heating module is arranged on the medium transportation module to heat the medium flowing in the medium transportation module through this pipeline heating module. The information acquisition module is arranged in the medium transportation module to collect the temperature parameters and flow parameters of the medium in the medium transportation module through this information acquisition module. The temperature parameters include a first temperature parameter and a second temperature parameter, and the flow parameters include a first flow parameter, a second flow parameter, and a third flow parameter;

[0061] As Figure 2As shown, the medium heating control module includes:

[0062] A data receiving unit 310, which can obtain temperature parameters and flow parameters;

[0063] An outlet liquid temperature prediction unit 330, which predicts the outlet liquid temperature according to the second temperature parameter, the second flow parameter and the third flow parameter to obtain an outlet liquid temperature prediction result;

[0064] A power output calculation unit 320, which calculates a second output power according to the temperature prediction result and the second preset temperature parameter to obtain a second output power calculation result;

[0065] A heating control unit 340, which generates a second power output control signal according to the second output power calculation result and sends the second power output control signal to the second heating unit so that the second heating unit outputs power according to the second power output control signal;

[0066] In this embodiment, the information acquisition module can use a temperature sensor to collect the medium temperature and a flow sensor to collect the medium flow rate data.

[0067] In this embodiment, the medium heating control module controls the output power of the pipeline heating module according to the temperature parameters and flow parameters of the medium, and further controls the output temperature of the medium. While improving the temperature control accuracy, the medium temperature can be kept within the preset range, and the output medium does not need to spend a lot of time, or even any time, to melt and heat the medium to the preset temperature, which greatly improves the processing efficiency.

[0068] Taking the stir-frying of hot pot base as an example, the medium can be rapeseed oil or beef tallow or other edible oils.

[0069] Specifically, the predicting the outlet liquid temperature according to the second temperature parameter, the second flow parameter and the third flow parameter to obtain an outlet liquid temperature prediction result includes:

[0070] Calculating heat loss according to the second temperature parameter to obtain a heat loss calculation result;

[0071] The calculation method of the heat loss is as follows:

[0072] ;

[0073] Wherein, q is the heat loss calculation result, with the unit of kilowatt-hour; D is the pipeline diameter, with the unit of millimeter; L is the pipeline length, with the unit of millimeter; Uis the total transfer coefficient of the pipeline, with the unit of kilowatt-hour per square millimeter per degree Celsius; T 2 is the second temperature parameter, with the unit of degree Celsius; t 2 is the ambient temperature parameter, with the unit of degree Celsius.

[0074] The heat dissipated by the medium through the second infusion pipeline is obtained through the above calculation method and the heat dissipated through the liquid outlet pipeline ;

[0075] According to the second flow parameter, the third flow parameter, and the dissipated heat, the liquid outlet temperature of the medium is predicted and calculated to obtain the predicted result of the liquid outlet temperature;

[0076] Specifically, the calculation method of the predicted calculation of the liquid outlet temperature of the medium is as follows:

[0077] ;

[0078] Among them, is the predicted result of the liquid outlet temperature of the medium discharged from the liquid outlet pipeline numbered y , with the unit of degree Celsius; L 1 is the length of the second infusion pipeline, with the unit of millimeter; D 1 is the diameter of the second infusion pipeline, with the unit of millimeter; L 2y is the length of the liquid outlet pipeline numbered y , with the unit of millimeter; is the diameter of the liquid outlet pipeline numbered y , with the unit of millimeter; y is the number of the liquid outlet pipeline with the valve open.

[0079] The predicted result of the liquid outlet temperature of the medium is obtained through the above calculation method, and then the second power calculation is performed. The calculation method of the second output power is as follows:

[0080] ;

[0081] Among them, is the second output power of the second heating unit on the liquid outlet pipeline numbered y , with the unit of kilowatt; Q 2 is the second flow parameter, with the unit of cubic millimeter per hour; is the third flow parameter of the medium in the liquid outlet pipeline numbered y , with the unit of cubic millimeter per hour; T 3 is the second preset temperature, with the unit of degree Celsius; t 3 is the predicted result of the liquid outlet temperature, with the unit of degree Celsius; ρ is the medium density, with the unit of kilogram per cubic millimeter; cis the specific heat capacity of the medium, with the unit of kilowatt-hour per kilogram per degree Celsius; η is the heating efficiency; T 3 is the second preset temperature, with the unit of degree Celsius; t 3 is the predicted result of the liquid outlet temperature, with the unit of degree Celsius.

[0082] Exemplarily, the solutions of the medium transportation module and the pipeline heating module are as follows. As Figure 3 shown, the medium transportation module includes:

[0083] An oil storage tank 410, in which the medium is stored in a limited amount;

[0084] A temporary storage tank 440, which is connected to the oil storage tank through a first liquid delivery pipeline 430;

[0085] A first delivery pump 420, which is arranged at the connection of the first liquid delivery pipeline and the oil storage tank and is respectively connected to the oil storage tank and the first liquid delivery pipeline;

[0086] A second liquid delivery pipeline 470, which is connected to the temporary storage tank. A second delivery pump 450 is arranged at the connection of the second liquid delivery pipeline and the temporary storage tank, and the second delivery pump is respectively connected to the temporary storage tank and the second liquid delivery pipeline;

[0087] A liquid outlet pipeline 460, at least one group of the liquid outlet pipelines is provided, at least one group of the liquid outlet pipelines is connected to the second liquid delivery pipeline, a valve 480 is arranged on the liquid outlet pipeline, and the liquid outlet pipeline is connected to a processing device 490.

[0088] The pipeline heating module includes a first heating unit 210 arranged on the first liquid delivery pipeline and a second heating unit 220 arranged on the liquid outlet pipeline;

[0089] In this embodiment, raw materials are put into the storage oil tank, and the first transfer pump works to pump out the raw materials in the storage oil tank. The raw materials are pumped into the temporary storage tank through the first liquid delivery pipeline. During this process, the first heating unit arranged on the first liquid delivery pipeline heats the flowing medium to the first preset temperature. When the heating control unit receives the liquid outlet signal sent by the processing equipment, the heating control unit generates a control signal and sends it to the medium delivery module, so that the second transfer pump of the medium delivery module works to pump out the medium in the temporary storage tank at a preset flow rate and enter the liquid outlet pipeline through the second liquid delivery pipeline. During this process, the temperature sensor in the information acquisition module detects the temperature of the medium in the temporary storage tank at present, and the flow sensor in the information acquisition module detects the flow parameters of the medium in the second liquid delivery pipeline and the liquid outlet pipeline, and uploads the above parameters to the medium heating control module. The liquid outlet temperature prediction unit in the medium heating control module predicts the liquid outlet temperature according to the second temperature parameter, the second flow parameter and the third flow parameter. The power output calculation unit then calculates the output power of the second heating unit according to the liquid outlet temperature prediction result. The heating control unit generates a control signal according to the calculation result of the output power of the second heating unit and sends it to the second heating unit, so that the second heating unit outputs power according to the calculation result of the output power of the second heating unit. By adjusting the heating power in real time, the liquid outlet temperature can be adjusted in real time, which can ensure that the liquid outlet medium is kept within the preset temperature range. The output medium does not need to spend a lot of time, or even any time, to melt and heat the medium to the preset temperature, thus greatly improving the processing efficiency.

[0090] In addition, the information acquisition module can also collect the first temperature parameter of the medium in the storage oil tank and the first flow parameter of the medium in the first liquid delivery pipeline. The power output calculation unit calculates the first output power according to the first temperature parameter and the first flow parameter, and obtains the first output power calculation result;

[0091] The calculation method of the first output power calculation is as follows:

[0092] ;

[0093] Among them, P 1 is the first output power, and the unit is kilowatt; Q 1 is the first flow parameter, and the unit is cubic millimeters per hour; T 1 is the first preset temperature, and the unit is degree Celsius; t 1 is the first temperature parameter, and the unit is degree Celsius.

[0094] The power to be output by the first heating unit, that is, the first output power, is obtained through the above calculation method.

[0095] The heating control unit then generates a first power output control signal according to the first output power calculation result, and sends the first power output control signal to the first heating unit, so that the first heating unit outputs power according to the first power output control signal.

[0096] Control the first heating unit to heat the medium output from the storage oil tank to the temporary storage tank through medium heating control, so as to preheat the medium, and then shorten the heating time of the second heating unit for the medium.

[0097] In addition, before the heating control unit generates a second power output control signal according to the second output power calculation result, it will also perform an output power verification on the second output power calculation result to obtain an output power verification result;

[0098] Specifically, the method of the output power verification is as follows:

[0099] ;

[0100] Among them, P is the rated power, and the unit is kilowatt.

[0101] If the above relationship holds, the verification fails, otherwise, the verification passes.

[0102] When the verification passes, a second power output control signal is generated according to the second output power calculation result.

[0103] If the verification fails, then according to the rated power, calculate the second output flow rate and the third output flow rate to obtain the second output flow rate and the third output flow rate;

[0104] Specifically, the calculation methods of the second output flow rate and the third output flow rate are as follows:

[0105] ;

[0106] Among them, is the third output flow rate of the medium in the liquid outlet pipeline with the y th group of valves opened, and the unit is cubic millimeters per hour; is the second output flow rate, and the unit is cubic millimeters per hour; y is the number of the liquid outlet pipeline with the valve opened.

[0107] The relationship between the second output flow rate and the third output flow rate is as follows:

[0108] ;

[0109] Among them, is the third flow rate parameter of the medium in the liquid outlet pipeline with the x th group of valves opened, and the unit is cubic millimeters per hour; x is except for the numbery The number of liquid outlet pipes with the remaining valves other than the liquid outlet pipe of

[0110] By verifying the output power of the second heating unit, it is avoided that after the calculated result of the output power exceeds the rated power, the second heating unit reports an error or operates at the rated power by mistake because it cannot reach the preset power, resulting in a decrease in the liquid outlet medium, and the control accuracy of the medium heating temperature is improved. When the rated power is reached, the heating control unit controls the liquid outlet flow rate. By controlling the liquid outlet flow rate, the medium can be fully heated under the action of the second heating unit so that the medium is heated to the preset temperature.

[0111] Embodiment 2:

[0112] Based on the pipeline heating control system provided in Embodiment 1, a pipeline heating control method is proposed in this embodiment. The control method includes:

[0113] S100: Obtain the first temperature parameter and the first flow rate parameter, perform the first output power calculation according to the first temperature parameter and the first flow rate parameter, and obtain the first output power calculation result;

[0114] Specifically, the first temperature parameter is the temperature of the medium in the storage tank, and the first flow rate parameter is the medium flow rate in the first liquid delivery pipeline;

[0115] In this embodiment, the calculation method of the first output power is as follows:

[0116] ;

[0117] Wherein, P 1 is the first output power, with the unit of kilowatt; Q 1 is the first flow rate parameter, with the unit of cubic millimeters per hour; ρ is the medium density, with the unit of kilograms per cubic millimeter; c is the specific heat capacity of the medium, with the unit of kilowatt-hours per kilogram degree Celsius‌‌; T 1 is the first preset temperature, with the unit of degree Celsius; t 1 is the first temperature parameter, with the unit of degree Celsius; η is the heating efficiency.

[0118] The power to be output by the first heating unit, that is, the first output power, is obtained through the above calculation method.

[0119] S200: Generate a first power output control signal according to the first output power calculation result, and send the first power output control signal to the first heating unit so that the first heating unit outputs power according to the first power output control signal;

[0120] Specifically, after the heating control unit obtains the first output power calculation result, it generates a first power output control signal that can adjust the working current of the first heating unit according to the first output power calculation result, so that the first heating unit controls the working current according to the first power output control signal. The control methods include, but are not limited to, controlling a variable resistor, a potentiometer, and PWM (pulse width modulation).

[0121] S300: Obtain the second temperature parameter, the second flow rate parameter, and the third flow rate parameter, and perform a liquid outlet temperature prediction based on the second temperature parameter, the second flow rate parameter, and the third flow rate parameter to obtain a liquid outlet temperature prediction result;

[0122] Specifically, the second temperature parameter is the real-time temperature of the medium in the temporary storage tank when the heating control unit obtains the liquid outlet signal; the second flow rate parameter is the actual flow rate of the medium in the second liquid delivery pipeline; the third flow rate parameter is the actual flow rate of the medium in the liquid outlet pipeline;

[0123] In this embodiment, the method for predicting the liquid outlet temperature based on the second temperature parameter, the second flow rate parameter, and the third flow rate parameter includes:

[0124] S310: Calculate the heat loss based on the second temperature parameter to obtain a heat loss calculation result;

[0125] Specifically, the calculation method of the heat loss is as follows:

[0126] ;

[0127] where, q is the heat loss calculation result, with the unit of kilowatt-hour; D is the pipe diameter, with the unit of millimeter; L is the pipe length, with the unit of millimeter; U is the total transfer coefficient of the pipe, with the unit of kilowatt-hour per square millimeter degree Celsius; T 2 is the second temperature parameter, with the unit of degree Celsius; t 2 is the ambient temperature parameter, with the unit of degree Celsius.

[0128] The heat dissipated by the medium through the second liquid delivery pipeline is obtained through the above calculation method and the heat dissipated through the liquid outlet pipeline numbered y ; ;

[0129] S320: Obtain the second flow rate parameter and the third flow rate parameter, and perform a liquid outlet temperature prediction calculation of the medium based on the second flow rate parameter, the third flow rate parameter, and the dissipated heat to obtain a liquid outlet temperature prediction result;

[0130] Specifically, the calculation method for predicting the medium outlet temperature is as follows:

[0131] ;

[0132] Among them, is the predicted result of the medium outlet temperature of the medium discharged from the outlet pipeline numbered y , with the unit of degree Celsius; L 1 is the length of the second infusion pipeline, with the unit of millimeter; D 1 is the diameter of the second infusion pipeline, with the unit of millimeter; is the length of the outlet pipeline numbered y , with the unit of millimeter; is the diameter of the outlet pipeline numbered y, with the unit of millimeter; y is the number of the outlet pipeline with the valve opened.

[0133] The predicted result of the medium outlet temperature is obtained through the above calculation method.

[0134] S400: According to the temperature prediction result and the second preset temperature parameter, calculate the second output power to obtain the second output power calculation result;

[0135] Specifically, the second preset temperature parameter is the predetermined temperature parameter during medium output, and the calculation method of the second output power is as follows:

[0136] ;

[0137] Among them, is the second output power of the second heating unit on the outlet pipeline numbered y , with the unit of kilowatt; Q 2 is the second flow parameter, with the unit of cubic millimeter per hour; is the third flow parameter of the medium in the outlet pipeline numbered y , with the unit of cubic millimeter per hour; T 3 is the second preset temperature, with the unit of degree Celsius; t 3 is the predicted result of the outlet temperature, with the unit of degree Celsius.

[0138] S500: Verify the second output power calculation result to obtain the output power verification result;

[0139] Specifically, the method of output power verification is:

[0140] ;

[0141] Among them, P is the rated power, with the unit of kilowatt.

[0142] If the above relationship holds, the verification fails; otherwise, the verification passes.

[0143] S600: When the verification passes, generate a second power output control signal according to the second output power calculation result, and send the second power output control signal to the second heating unit, so that the second heating unit outputs power according to the second power output signal.

[0144] S700: If the verification fails, calculate the second output flow rate and the third output flow rate according to the rated power to obtain the second output flow rate and the third output flow rate;

[0145] Specifically, the calculation methods of the second output flow rate and the third output flow rate are as follows:

[0146] ;

[0147] Among them, is the third output flow rate of the medium in the liquid outlet pipeline where the y th group of valves are opened, with the unit of cubic millimeters per hour; is the second output flow rate, with the unit of cubic millimeters per hour; y is the number of the liquid outlet pipeline where the valves are opened.

[0148] The relationship between the second output flow rate and the third output flow rate is as follows:

[0149] ;

[0150] Among them, is the third flow rate parameter of the medium in the liquid outlet pipeline where the x th group of valves are opened, with the unit of cubic millimeters per hour; x is the number of the liquid outlet pipelines where the valves other than the pipeline numbered y are opened.

[0151] Specifically, after the heating control unit obtains the second output power calculation result, it will generate a second power output control signal that can adjust the working current of the second heating unit according to the second output power calculation result, so that the second heating unit controls the working current according to the second power output control signal. The control methods include but are not limited to using variable resistors or potentiometers, and adopting PWM (pulse width modulation) control.

[0152] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipeline heating control system, characterized in that: include: An information acquisition module, a medium heating control module, a pipeline heating module and a medium conveying module, wherein the medium conveying module is used to store and convey the medium, the pipeline heating module is arranged on the medium conveying module, and the medium flowing in the medium conveying module is heated by the pipeline heating module, the information acquisition module is arranged in the medium conveying module, and the temperature parameters and flow parameters of the medium in the medium conveying module are collected by the information acquisition module, the temperature parameters include a second temperature parameter, and the flow parameters include a second flow parameter and a third flow parameter; The medium heating control module includes: A data receiving unit, used to obtain temperature parameters and flow parameters; The liquid outlet temperature prediction unit is used to predict the liquid outlet temperature according to the second temperature parameter, the second flow parameter and the third flow parameter to obtain a liquid outlet temperature prediction result; A power output calculation unit performs a second output power calculation according to the temperature prediction result and a second preset temperature parameter to obtain a second output power calculation result; A heating control unit, used to generate a second power output control signal according to a second output power calculation result, and send the second power output control signal to the pipeline heating module so that the pipeline heating module outputs power according to the second power output control signal; The second output power is calculated as follows: ； in, For the number y a second output power of the second heating unit on the liquid outlet pipe, in kilowatts; Q 2 is the second flow parameter, in cubic millimeters per hour; For the number y The third flow parameter of the medium in the outlet pipe, in cubic millimeters per hour; T 3 is the second preset temperature, in degrees Celsius; t 3 is the predicted result of the outlet temperature, in degrees Celsius; ρ is the medium density, in kilograms per cubic millimeter; c is the specific heat capacity of the medium, expressed in kilowatt-hours per kilogram degrees Celsius; η For heating efficiency; Before generating the second power output control signal according to the second output power calculation result, the heating control unit performs output power verification on the second output power calculation result to obtain an output power verification result; When the verification is passed, generating a second power output control signal according to the second output power calculation result; If the verification fails, the second output flow rate and the third output flow rate are calculated according to the rated power to obtain the second output flow rate and the third output flow rate; The heating control unit generates a flow control signal according to the second output flow rate and the third output flow rate and sends the signal to the medium delivery module, so that the medium delivery module adjusts the medium flow rate according to the flow control signal.

2. A pipeline heating control system according to claim 1, characterized in that: The method of predicting the outlet liquid temperature according to the second temperature parameter, the second flow parameter and the third flow parameter to obtain the outlet liquid temperature prediction result includes: Performing heat loss calculation according to the second temperature parameter to obtain a heat loss calculation result; The medium outlet liquid temperature prediction calculation is performed according to the second flow parameter, the third flow parameter and the heat loss calculation result to obtain the outlet liquid temperature prediction result.

3. A pipeline heating control system according to claim 1, characterized in that: The medium delivery module comprises: Oil storage tanks, in which a limited amount of medium is stored; A temporary storage tank, which is connected to the oil storage tank through a first liquid infusion pipeline; a first delivery pump, which is arranged at the connection between the first infusion pipeline and the oil storage tank, and is connected to the oil storage tank and the first infusion pipeline respectively; A second infusion pipeline, the second infusion pipeline is connected to the temporary storage tank, a second delivery pump is provided at the connection between the second infusion pipeline and the temporary storage tank, and the second delivery pump is respectively connected to the temporary storage tank and the second infusion pipeline; A liquid outlet pipeline, wherein at least one group of the liquid outlet pipelines is provided, at least one group of the liquid outlet pipelines is connected to the second liquid infusion pipeline, a valve is provided on the liquid outlet pipeline, and the liquid outlet pipeline is connected to the processing equipment; The pipeline heating module includes a first heating unit arranged on the first infusion pipeline and a second heating unit arranged on the liquid outlet pipeline, and the second heating unit obtains a second power output control signal and outputs power according to the second power output signal.

4. A pipeline heating control system according to claim 3, characterized in that: The temperature parameter further includes a first temperature parameter, and the flow parameter further includes a first flow parameter; The power output calculation unit also obtains a first temperature parameter and a first flow parameter, performs a first output power calculation according to the first temperature parameter and the first flow parameter, and obtains a first output power calculation result; The heating control unit generates a first power output control signal according to the first output power calculation result, and sends the first power output control signal to the first heating unit, so that the first heating unit outputs power according to the first power output control signal.

5. A pipeline heating control system according to claim 1, characterized in that: The output power verification method is: ； Where P is the rated power in kilowatts. For the number y a second output power of the second heating unit on the liquid outlet pipe, in kilowatts; y The number of the outlet pipe opened by the valve; If the above relationship holds, the verification fails; otherwise, the verification passes.

6. A pipeline heating control system according to claim 5, characterized in that: The calculation method of the second output flow and the third output flow is as follows: ； in, For the number y The third output flow rate of the medium in the outlet pipe, in cubic millimeters per hour; is the second output flow rate, in cubic millimeters per hour; ρ is the medium density, in kilograms per cubic millimeter; c is the specific heat capacity of the medium, expressed in kilowatt-hours per kilogram degrees Celsius; η For heating efficiency; T 3 is the second preset temperature, in degrees Celsius; t 3 is the predicted result of the outlet liquid temperature, in degrees Celsius.

7. A pipeline heating control system according to claim 6, characterized in that: The relationship between the second output flow and the third output flow is as follows: ； in, For the x The third flow parameter of the medium in the outlet pipe when the valve group is open, in cubic millimeters per hour; x To divide the number y The number of liquid outlet pipelines whose valves are opened except for the liquid outlet pipeline.

8. A pipeline heating control method, characterized in that: The pipeline heating control method is executed using the pipeline heating control system according to any one of claims 1 to 7, and the pipeline heating control method includes: Obtaining a second temperature parameter, a second flow parameter, and a third flow parameter, and performing a liquid outlet temperature prediction according to the second temperature parameter, the second flow parameter, and the third flow parameter to obtain a liquid outlet temperature prediction result; Performing a second output power calculation according to the temperature prediction result and a second preset temperature parameter to obtain a second output power calculation result; A second power output control signal is generated according to the second output power calculation result, and the second power output control signal is sent to the pipeline heating module so that the pipeline heating module outputs power according to the second power output signal.

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