Pipeline heating control system and method thereof

Abstract

The invention discloses a pipeline heating control system and method, and relates to the technical field of temperature control, the pipeline heating control system comprises 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 medium conveying module is arranged on the pipeline heating module. The information acquisition module is arranged in the medium conveying module, the medium heating control module comprises a data receiving unit, a liquid outlet temperature prediction unit, a power output calculation unit and a heating control unit, and control over the output power of the pipeline heating module is achieved through the medium heating control module according to temperature parameters and flow parameters of a medium. Therefore, the output temperature of the medium is controlled, the temperature control precision is improved, the temperature of the medium can be kept within the preset range, the output medium does not need to spend a lot of time, even does not need to spend time to melt the medium and heat the medium to the preset temperature, and the processing efficiency is greatly improved.

Description

Technical Field

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

[0002] In the process of frying raw materials, the cooking oil is usually heated to a preset temperature first, and then the raw materials are put into the wok one by one in a specific order and time interval. However, this method has a significant drawback: after each frying, cold oil needs to be refilled and wait for it to heat to the preset temperature before the next frying can be carried out. This process is not only time-consuming, but also seriously affects the overall efficiency of frying.

[0003] In order to solve this problem, the prior art proposes an improved solution. 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 edible oil is transported to the temporary storage tank, the oil can be heated during the flow. 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 wok, thereby 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 the edible oil will inevitably lose heat during storage in the temporary storage tank and transportation in the pipeline, when the oil is output to the wok, its temperature is often lower than the preset value. This means that the wok still needs to further heat the oil temperature to reach the ideal frying temperature. Summary of the invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a pipeline heating control system and method thereof, so that the medium temperature can be maintained within a preset range, and the output medium no longer needs to spend a lot of time, or even no time, to melt and heat the medium to the preset temperature, thereby greatly improving the processing efficiency.

[0006] On the one hand, the present invention provides a pipeline heating control system, comprising: 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 a 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 parameter and flow parameter of the medium in the medium conveying module are collected by 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; The medium heating control module includes: A data receiving unit, which can obtain temperature parameters and flow parameters; The liquid outlet temperature prediction unit predicts 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, which 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; The heating control unit 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.

[0007] Further, the liquid outlet temperature prediction is performed according to the second temperature parameter, the second flow parameter and the third flow parameter to obtain the liquid outlet temperature prediction result, including: 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.

[0008] Furthermore, the medium delivery module includes: 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 communicated with 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.

[0009] 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, thereby controlling the output temperature of the medium. While improving the temperature control accuracy, the medium temperature can also be kept within a preset range. The output medium no longer needs to spend a lot of time, or even no time, to melt and heat the medium to the preset temperature, thereby greatly improving the processing efficiency.

[0010] Furthermore, 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.

[0011] The first heating unit is controlled by the medium heating control to heat the medium output from the oil storage tank to the temporary storage tank, thereby preheating the medium, thereby shortening the time for the second heating unit to heat the medium.

[0012] Further, 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 passes, a second power output control signal is generated according to the second output power calculation result.

[0013] 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.

[0014] Furthermore, 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.

[0015] Furthermore, the second output flow rate and the third output flow rate are calculated 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.

[0016] Furthermore, 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.

[0017] By verifying the output power of the second heating unit, it is possible to avoid the second heating unit reporting an error or operating at the rated power incorrectly due to the failure to reach the preset power when the calculated output power exceeds the rated power, resulting in a decrease in the outlet liquid medium, thereby improving the control accuracy of the medium heating temperature.

[0018] On the other hand, the present invention further provides a pipeline heating control method, which is executed using the above-mentioned pipeline heating control system, 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.

[0019] The present invention has the following advantages: The present invention controls the output power of the pipeline heating module according to the temperature parameters and flow parameters of the medium through the medium heating control module, thereby controlling the output temperature of the medium, improving the temperature control accuracy while maintaining the medium temperature within a preset range. The output medium does not need to spend a lot of time, or even time, to melt and heat the medium to the preset temperature, thereby greatly improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a logical structure diagram of the pipeline heating control system; Figure 2 yes Figure 1 The schematic diagram of the logical structure of the medium heating control module in the pipeline heating control system shown; Figure 3 yes Figure 1 A schematic diagram of the coordination between the medium delivery module and the pipeline heating module in the pipeline heating control system shown; In the figure: 100. Information collection module; 200, pipeline heating module; 210, first heating unit; 220, second heating unit; 300, medium heating control module; 310, data receiving unit; 320, power output calculation unit; 330, liquid outlet temperature prediction unit; 340, heating control unit; 400, medium delivery module; 410, oil storage tank; 420, first delivery pump; 430, first liquid infusion pipeline; 440, temporary storage tank; 450, second delivery pump; 460, liquid outlet pipeline; 470, second liquid infusion pipeline; 480, valve; 490, processing equipment. DETAILED DESCRIPTION

[0021] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0022] In this document, relational terms such as first and second, etc., are used only 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 "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0023] As described in the background technology, since the edible oil will inevitably lose heat during storage in the temporary storage tank and transportation in the pipeline, when the oil is output to the wok, its temperature is often 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.

[0024] Embodiment 1: Therefore, in order to solve the above technical problems of the prior art, this embodiment provides a pipeline heating control system, such as Figure 1 As 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 conveying module 400, 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 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; like Figure 2 As shown, the medium heating control module includes: A data receiving unit 310, which can obtain temperature parameters and flow parameters; The liquid outlet temperature prediction unit 330 predicts 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 320, which performs a second output power calculation according to the temperature prediction result and the second preset temperature parameter to obtain a second output power calculation result; The heating control unit 340 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; In this embodiment, the information acquisition module may use a temperature sensor to acquire medium temperature, and use a flow sensor to acquire medium flow data.

[0025] 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, thereby controlling the output temperature of the medium. While improving the temperature control accuracy, the medium temperature can also be kept within a preset range. The output medium no longer needs to spend a lot of time, or even no time, to melt and heat the medium to the preset temperature, thereby greatly improving the processing efficiency.

[0026] Taking the frying of hot pot base as an example, the medium may be rapeseed oil or butter or other edible oils.

[0027] Specifically, 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 heat loss is calculated as follows: ; in, q is the calculation result of heat loss, in kilowatt-hours; D is the pipe diameter in millimeters; L is the pipe length in millimeters; U is the total transfer coefficient of the pipeline, expressed in kilowatt-hours per square millimeter degrees Celsius; T 2 is the second temperature parameter, in degrees Celsius; t 2 is the ambient temperature parameter, in degrees Celsius.

[0028] The heat dissipated by the medium through the second fluid delivery pipeline is obtained by the above calculation method. The heat lost through the outlet pipe ; Perform medium outlet temperature prediction calculation according to the second flow parameter, the third flow parameter, and the dissipated heat to obtain an outlet temperature prediction result; Specifically, the calculation method for predicting the medium outlet temperature is as follows: ; in, From number y The predicted result of the outlet temperature of the medium discharged from the outlet pipe of the medium, in degrees Celsius; L 1 is the length of the second infusion pipeline, in millimeters; D 1 is the diameter of the second infusion pipeline, in millimeters; L 2y For the number y The length of the liquid outlet pipe, in millimeters; For the number yThe diameter of the liquid outlet pipe, in millimeters; y The number of the outlet pipe opened by the valve.

[0029] The predicted result of the medium outlet temperature is obtained by the above calculation method, and then the second power calculation is performed. The calculation method of the second output power is 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; T 3 is the second preset temperature, in degrees Celsius; t 3 is the predicted result of the outlet liquid temperature, in degrees Celsius.

[0030] Exemplarily, the scheme of the medium conveying module and the pipeline heating module is as follows: Figure 3 As shown, the medium delivery module includes: An oil storage tank 410, in which a limited amount of medium is stored; A temporary storage tank 440, which is connected to the oil storage tank via a first liquid infusion pipeline 430; A first delivery pump 420, which is disposed 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 liquid infusion pipeline 470, the second liquid infusion pipeline 470 is connected to the temporary storage tank, and a second delivery pump 450 is provided at the connection between the second liquid infusion pipeline and the temporary storage tank, and the second delivery pump is respectively connected to the temporary storage tank and the second liquid infusion pipeline; A liquid outlet pipeline 460 is provided with at least one group of liquid outlet pipelines, at least one group of liquid outlet pipelines is connected to the second liquid infusion pipeline, a valve 480 is provided on the liquid outlet pipeline, and the liquid outlet pipeline is connected to the processing equipment 490.

[0031] The pipeline heating module includes a first heating unit 210 disposed on the first liquid infusion pipeline and a second heating unit 220 disposed on the liquid outlet pipeline; In this embodiment, raw materials are put into the oil storage tank, and the first delivery pump works to pump out the raw materials in the oil storage tank. The raw materials are pumped into the temporary storage tank through the first infusion pipeline. During this process, the first heating unit arranged in the second infusion pipeline heats the flowing medium to heat the medium to a 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 to send a medium delivery module to enable the second delivery pump of the medium delivery module to work, and pump out the medium in the temporary storage tank at a preset flow rate, and enter the liquid outlet pipeline through the second infusion pipeline. During this process, the temperature sensor in the information acquisition module detects the temperature of the medium in the current temporary storage tank, and the flow sensor in the information acquisition module detects the flow parameters of the medium in the second infusion pipeline and the liquid outlet pipeline, and the above parameters are The data is uploaded to the medium heating control module, the outlet liquid temperature prediction unit in the medium heating control module predicts the outlet liquid temperature according to the second temperature parameter, the second flow parameter and the third flow parameter, the power output calculation unit calculates the output power of the second heating unit according to the outlet liquid 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, and the real-time adjustment of the heating power and the outlet liquid temperature is achieved, which can ensure that the outlet liquid medium is kept within the preset temperature range, and the output medium does not need to spend a lot of time, or even time, to melt and heat the medium to the preset temperature, thereby greatly improving the processing efficiency.

[0032] In addition, the information acquisition module can also collect a first temperature parameter of the medium in the oil storage tank and a first flow parameter of the medium in the first liquid infusion pipeline, and the power output calculation unit performs a first output power calculation according to the first temperature parameter and the first flow parameter to obtain a first output power calculation result; The first output power calculation is calculated as follows: ; in, P 1 is the first output power, in kilowatts; Q 1 is the first flow parameter, in cubic millimeters per hour; T 1 is the first preset temperature, in degrees Celsius; t 1 is the first temperature parameter, in degrees Celsius.

[0033] The power to be output by the first heating unit, ie, the first output power, is obtained through the above calculation method.

[0034] 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.

[0035] The first heating unit is controlled by the medium heating control to heat the medium output from the oil storage tank to the temporary storage tank, thereby preheating the medium, thereby shortening the time for the second heating unit to heat the medium.

[0036] In addition, before the heating control unit generates the second power output control signal according to the second output power calculation result, the second output power calculation result is also subjected to output power verification to obtain an output power verification result; Specifically, the output power verification method is: ; Where P is the rated power in kilowatts.

[0037] If the above relationship holds, the verification fails; otherwise, the verification passes.

[0038] When the verification passes, a second power output control signal is generated according to the second output power calculation result.

[0039] 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; Specifically, the second output flow rate and the third output flow rate are calculated as follows: ; in, For the y The third output flow rate of the medium in the outlet pipe with the valve group opened, in cubic millimeters per hour; is the second output flow rate, in cubic millimeters per hour; y The number of the outlet pipe opened by the valve.

[0040] 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.

[0041] By verifying the output power of the second heating unit, it is possible to avoid the second heating unit failing to reach the preset power or operating at the rated power due to an error when the calculated output power exceeds the rated power, which results in a decrease in the outlet medium, thereby improving the control accuracy of the medium heating temperature. When the rated power is reached, the heating control unit controls the outlet flow rate, and by controlling the outlet flow rate, the medium can be fully heated by the second heating unit, so that the medium is heated to the preset temperature.

[0042] Embodiment 2: This embodiment is based on a pipeline heating control system provided in Example 1, and proposes a pipeline heating control method. The control method includes: S100: Acquire a first temperature parameter and a first flow parameter, perform a first output power calculation according to the first temperature parameter and the first flow parameter, and obtain a first output power calculation result; Specifically, the first temperature parameter is the temperature of the medium in the storage tank, and the first flow parameter is the flow of the medium in the first liquid delivery pipeline; In this embodiment, the first output power is calculated as follows: ; in, P 1 is the first output power, in kilowatts; Q 1 is the first flow parameter, 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; T 1 is the first preset temperature, in degrees Celsius; t 1 is the first temperature parameter, in degrees Celsius; η For heating efficiency.

[0043] The power to be output by the first heating unit, ie, the first output power, is obtained through the above calculation method.

[0044] S200: generating a first power output control signal according to a first output power calculation result, and sending the first power output control signal to a first heating unit, so that the first heating unit outputs power according to the first power output control signal; Specifically, after the heating control unit obtains the first output power calculation result, it will generate 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 controller. The control method includes but is not limited to controlling by controlling variable resistors, potentiometers, and pulse width modulation (WM).

[0045] S300: Acquire a second temperature parameter, a second flow parameter, and a third flow parameter, and perform 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; 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 parameter is the actual flow of the medium in the second infusion pipeline; the third flow parameter is the actual flow of the medium in the liquid outlet pipeline; In this embodiment, the method of predicting the outlet liquid temperature according to the second temperature parameter, the second flow parameter and the third flow parameter includes: S310: performing heat loss calculation according to the second temperature parameter to obtain a heat loss calculation result; Specifically, the heat loss is calculated as follows: ; in, q is the calculation result of heat loss, in kilowatt-hours; D is the pipe diameter in millimeters; L is the pipe length in millimeters; U is the total transfer coefficient of the pipeline, expressed in kilowatt-hours per square millimeter degrees Celsius; T 2 is the second temperature parameter, in degrees Celsius; t 2 is the ambient temperature parameter, in degrees Celsius.

[0046] The heat dissipated by the medium through the second fluid delivery pipeline is obtained by the above calculation method. With the number y The heat lost in the liquid outlet pipe ; S320: Obtain the second flow parameter and the third flow parameter, and perform a prediction calculation of the medium outlet temperature according to the second flow parameter, the third flow parameter, and the dissipated heat to obtain a prediction result of the outlet temperature; Specifically, the calculation method for predicting the medium outlet temperature is as follows: ; in, From number y The predicted result of the outlet temperature of the medium discharged from the outlet pipe of the medium, in degrees Celsius; L 1 is the length of the second infusion pipeline, in millimeters; D 1 is the diameter of the second infusion pipeline, in millimeters; For the number y The length of the liquid outlet pipe, in millimeters; is the diameter of the outlet pipe numbered y, in millimeters; y The number of the outlet pipe opened by the valve.

[0047] The predicted result of the medium outlet temperature is obtained through the above calculation method.

[0048] S400: 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; Specifically, the second preset temperature parameter is a predetermined temperature parameter when the medium is output, and 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 liquid temperature, in degrees Celsius.

[0049] S500: Performing output power verification on the second output power calculation result to obtain an output power verification result; Specifically, the output power verification method is: ; Where P is the rated power in kilowatts.

[0050] If the above relationship holds, the verification fails; otherwise, the verification passes.

[0051] S600: When the verification passes, 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 second heating unit, so that the second heating unit outputs power according to the second power output signal.

[0052] S700: 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; Specifically, the second output flow rate and the third output flow rate are calculated as follows: ; in, For the y The third output flow rate of the medium in the outlet pipe with the valve group opened, in cubic millimeters per hour; is the second output flow rate, in cubic millimeters per hour; y The number of the outlet pipe opened by the valve.

[0053] 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.

[0054] 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 controller. The control method includes but is not limited to using a variable resistor or potentiometer and using PWM (pulse width modulation) control.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may 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 rather to 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; The power output calculation unit performs a second output power calculation according to the temperature prediction result and the second preset temperature parameter to obtain a second output power calculation result; The heating control unit is used to 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 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 temperature is predicted and calculated based on the second flow parameter, the third flow parameter and the heat loss calculation result to obtain the outlet 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 communicated with 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: 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.

6. A pipeline heating control system according to claim 5, 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.

7. A pipeline heating control system according to claim 6, 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.

8. A pipeline heating control system according to claim 7, 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.

9. 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 8, and the pipeline heating control method comprises: 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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