Constant temperature control method and device for hollow cooling screw rod

Abstract

The invention discloses a constant temperature control method and device for a hollow cooling screw rod. The method comprises the steps that the inlet temperature and the outlet temperature of a cooling medium flowing through a hollow cooling lead screw are obtained according to a preset time interval; under the condition that the outlet temperature and the inlet temperature are different, the difference value between the outlet temperature and the inlet temperature is calculated, and a temperature difference value is obtained; the temperature difference value is processed through a flow velocity prediction model, and a flow velocity adjusting strategy for adjusting the flow velocity of the cooling medium is obtained; and adjusting the flow velocity of the cooling medium from the current flow velocity to the target flow velocity according to the flow velocity adjusting strategy to enable the outlet temperature and the inlet temperature to be the same. According to the invention, the technical problem that the precision requirement is difficult to meet when the temperature of the hollow screw rod is controlled by a traditional method due to the sensitivity of the hollow screw rod to the temperature in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision temperature control, and in particular to a constant temperature control method and device for a hollow cooling screw rod. Background Art

[0002] Cooling machines are commonly used cooling equipment in industry to ensure the normal operation of related machines. The current mainstream technology is to use frequency conversion technology to adjust the cooling capacity of the water cooler in real time according to the feedback from the temperature sensor to achieve precise temperature control of related equipment; in machine tools, although this technology can ensure the normal operation of equipment such as electric spindles and linear motors, it cannot ensure the precise temperature control of hollow cooling screws that are more sensitive to temperature; the accuracy of the screw is an important guarantee for the positioning accuracy of machine tools. Thermal changes will cause the screw to thermally elongate and contract. For precision machine tools, hollow cooling is often used to precisely control its temperature in real time; the accuracy is affected by the heat of the screw, and to ensure the accuracy, the screw often uses central cooling, and it is unrealistic to use the cooling capacity of the water cooler to control the temperature of the screw in real time to keep it constant.

[0003] With regard to the problem in the above-mentioned related technologies that the hollow screw is sensitive to temperature and it is difficult to meet the accuracy requirements when controlling the temperature of the hollow screw using traditional methods, no effective solution has been proposed so far. Summary of the invention

[0004] The embodiments of the present invention provide a constant temperature control method and device for a hollow cooling screw rod, so as to at least solve the technical problem in the related art that it is difficult to meet the accuracy requirements when using traditional methods to control the temperature of the hollow screw rod due to the sensitivity of the hollow screw rod to temperature.

[0005] According to one aspect of an embodiment of the present invention, a constant temperature control method for a hollow cooling screw is provided, comprising: obtaining an inlet temperature and an outlet temperature of a cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; when the outlet temperature is different from the inlet temperature, calculating the difference between the outlet temperature and the inlet temperature to obtain a temperature difference; processing the temperature difference using a flow rate prediction model to obtain a flow rate for adjusting the flow rate of the cooling medium. Regulation strategy, wherein the flow rate prediction model is trained by machine learning using multiple sets of training data, each of the multiple sets of training data includes: a sample temperature difference, a sample flow rate regulation strategy corresponding to the sample temperature difference; according to the flow rate regulation strategy, the flow rate of the cooling medium is adjusted from the current flow rate to the target flow rate so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate regulation strategy.

[0006] Optionally, the temperature difference is processed using a flow rate prediction model to obtain a flow rate regulation strategy for adjusting the current flow rate of the cooling medium, including: using the flow rate prediction model to process the temperature difference to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; when the outlet temperature is greater than the inlet temperature, determining the flow rate regulation strategy as: increasing the flow rate change value based on the current flow rate of the cooling medium; when the outlet temperature is less than the inlet temperature, determining the flow rate regulation strategy as: reducing the flow rate of the cooling medium based on the current flow rate by the flow rate change value.

[0007] Optionally, the constant temperature control method of the hollow cooling screw also includes: determining that the cooling medium flowing out of the hollow cooling screw is the target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; transferring the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to use the cooling area to perform recovery treatment on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; transferring the treated target cooling medium in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium at the predetermined temperature.

[0008] Optionally, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so that the target cooling medium is restored to a predetermined temperature by using the cooling area, including: obtaining the current temperature of the target cooling medium in the cooling area; when the current temperature is greater than the predetermined temperature, controlling the variable frequency cooling device to increase the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to start, so as to restore the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to restore the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to restore the target cooling medium; when the current temperature is less than the predetermined temperature, controlling the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to restore the target cooling medium to the predetermined temperature.

[0009] Optionally, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so that the target cooling medium is restored to a predetermined temperature by using the cooling area, including: obtaining a first amount of cold liquid of the target cooling medium in the collection area and a second amount of cold liquid of the cooling medium in the constant temperature area; when the first amount of cold liquid is greater than the second amount of cold liquid, controlling the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to restore the target cooling medium in the cooling area to the predetermined temperature; when the first amount of cold liquid is less than the second amount of cold liquid, controlling the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to restore the target cooling medium in the cooling area to the predetermined temperature.

[0010] Optionally, the constant temperature control method of the hollow cooling screw also includes: controlling the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

[0011] Optionally, the constant temperature control method of the hollow cooling screw also includes: when using multiple hollow cooling screws in parallel for constant temperature control, using different flow rate regulators to control the flow rate of the cooling medium flowing into each hollow cooling screw, so that the outlet temperature and the inlet temperature of each hollow cooling screw are the same.

[0012] According to another aspect of an embodiment of the present invention, a constant temperature control device for a hollow cooling screw is further provided, comprising: a first acquisition unit, for acquiring an inlet temperature and an outlet temperature of a cooling medium flowing through the hollow cooling screw at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; a second acquisition unit, for calculating the difference between the outlet temperature and the inlet temperature when the outlet temperature is different from the inlet temperature to obtain a temperature difference; a third acquisition unit, for processing the temperature difference using a flow rate prediction model to obtain a prediction of the cooling medium A flow rate regulation strategy for regulating the flow rate of the quality, wherein the flow rate prediction model is trained by machine learning using multiple groups of training data, and each of the multiple groups of training data includes: a sample temperature difference, a sample flow rate regulation strategy corresponding to the sample temperature difference; an adjustment unit, used to adjust the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate regulation strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate regulation strategy.

[0013] Optionally, the third acquisition unit includes: a first acquisition module, used to process the temperature difference using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; a first determination module, used to determine, when the outlet temperature is greater than the inlet temperature, that the flow rate adjustment strategy is: increasing the flow rate change value on the basis of the current flow rate of the cooling medium; and a second determination module, used to determine, when the outlet temperature is lower than the inlet temperature, that the flow rate adjustment strategy is: reducing the flow rate change value on the basis of the current flow rate of the cooling medium.

[0014] Optionally, the constant temperature control device of the hollow cooling screw also includes: a determination unit, used to determine that the cooling medium flowing out of the hollow cooling screw is a target cooling medium; a first storage unit, used to store the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; a processing unit, used to transfer the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to use the cooling area to perform recovery treatment on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; a second storage unit, used to transfer the processed target cooling medium in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium at the predetermined temperature.

[0015] Optionally, the processing unit includes: a second acquisition module, used to acquire the current temperature of the target cooling medium in the cooling zone; a first control module, used to control the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to start, so as to recover the target cooling medium so that the temperature of the target cooling medium is restored to the predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to recover the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to recover the target cooling medium; a second control module, used to control the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to stop running or reduce the running time, so as to recover the target cooling medium so that the temperature of the target cooling medium is restored to the predetermined temperature, when the current temperature is lower than the predetermined temperature.

[0016] Optionally, the processing unit includes: a third acquisition module, used to obtain a first amount of cold liquid of the target cooling medium in the collection area and a second amount of cold liquid of the cooling medium in the constant temperature area; a third control module, used to control the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to start, so as to recover the target cooling medium in the cooling zone and restore the temperature of the target cooling medium to the predetermined temperature, when the first amount of cold liquid is greater than the second amount of cold liquid; a fourth control module, used to control the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to stop running or reduce the running time, so as to recover the target cooling medium in the cooling zone and restore the temperature of the target cooling medium to the predetermined temperature, when the first amount of cold liquid is less than the second amount of cold liquid.

[0017] Optionally, the constant temperature control device of the hollow cooling screw also includes: a first control unit, used to control the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate regulation strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

[0018] Optionally, the constant temperature control device of the hollow cooling screw also includes: a second control unit, which is used to control the flow rate of the cooling medium flowing into each of the hollow cooling screws using different flow rate regulators when using multiple hollow cooling screws in parallel for constant temperature control, so that the outlet temperature and the inlet temperature of each hollow cooling screw are the same.

[0019] According to another aspect of an embodiment of the present invention, a constant temperature control system for a hollow cooling screw is further provided. The constant temperature control system for the hollow cooling screw uses any of the above-mentioned constant temperature control methods for the hollow cooling screw.

[0020] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes any one of the above-mentioned constant temperature control methods for a hollow cooling screw.

[0021] According to another aspect of an embodiment of the present invention, a processor is further provided, the processor being used to run a program, wherein when the program is run, any one of the above-mentioned constant temperature control methods for a hollow cooling screw is executed.

[0022] According to another aspect of an embodiment of the present invention, a computer program product is further provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, any one of the above-mentioned constant temperature control methods for a hollow cooling screw is executed.

[0023] In an embodiment of the present invention, the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw are obtained at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; when the outlet temperature is different from the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain the temperature difference; the temperature difference is processed using a flow rate prediction model to obtain a flow rate regulation strategy for regulating the flow rate of the cooling medium, wherein the flow rate prediction model is trained using multiple sets of training data by machine learning, and each set of the multiple sets of training data includes: a sample temperature difference, and a sample flow rate regulation strategy corresponding to the sample temperature difference; according to the flow rate regulation strategy, the flow rate of the cooling medium is adjusted from the current flow rate to the target flow rate so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate regulation strategy. Through the above technical scheme, the purpose of adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into the hollow cooling screw and flowing out of the screw to control the temperature of the hollow cooling screw is achieved, and the technical effect of controlling the flow rate of the cooling medium by real-time monitoring the temperature of the cooling medium to accurately control the temperature of the hollow cooling screw is achieved, thereby improving the accuracy of temperature control of the hollow cooling screw, thereby solving the technical problem in the related technology that it is difficult to meet the precision requirements when using traditional methods to control the temperature of the hollow screw due to the sensitivity of the hollow screw to temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a hardware structure block diagram of a mobile terminal of a method for controlling a constant temperature of a hollow cooling screw rod according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of a constant temperature control method for a hollow cooling screw according to an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of temperature control of a single hollow cooling screw according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of temperature control of multiple hollow cooling screw rods according to an embodiment of the present invention;

[0029] Figure 5Schematic diagram of a thermostatic control device for a hollow cooling screw according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] As described in the background technology, due to the sensitivity of the hollow screw to temperature, it is difficult to meet the accuracy requirements when using traditional methods to control the temperature of the hollow screw. In view of the above defects, a constant temperature control method and device for a hollow cooling screw are provided in an embodiment of the present invention.

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] The method embodiments provided in the embodiments of the present invention can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a method for controlling the constant temperature of a hollow cooling screw rod according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0035] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the constant temperature control method of the hollow cooling screw in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is realized. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The above-mentioned specific network example may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0036] According to an embodiment of the present invention, a method embodiment of a constant temperature control method for a hollow cooling screw is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0037] Figure 2 : is a flow chart of a constant temperature control method for a hollow cooling screw rod according to an embodiment of the present invention, such as Figure 2 As shown, the method comprises the following steps:

[0038] Step S202, obtaining the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw.

[0039] Specifically, in industrial equipment that requires high-precision positioning and motion control, such as precision machine tools (e.g. CNC machine tools, machining centers), positioning devices on automated production lines, linear drive units of robot arms, high-end testing equipment (e.g. coordinate measuring machines), etc., the hollow screw (i.e. the hollow cooling screw in the embodiment of the present invention) is a key linear motion transmission component, and precise control of its temperature is crucial to ensuring the accuracy, stability and service life of the equipment.

[0040] In this embodiment, the current temperature change of the hollow cooling screw can be monitored by real-time monitoring of the inlet temperature of the cooling medium when it flows into the hollow cooling screw and the outlet temperature of the cooling medium when it flows out of the hollow cooling screw, so as to facilitate temperature control thereof.

[0041] It should be noted that the cooling medium is generally stored in a cooler before flowing into the hollow cooling screw. Therefore, the inlet temperature of the cooling medium when flowing into the hollow cooling screw should be consistent at all times. In order to save monitoring costs, it is not necessary to monitor the inlet temperature of the cooling medium when it flows into the hollow cooling screw in real time. It is only necessary to clarify the temperature of the cooling medium when it flows out of the cooler. Of course, in order to ensure the accuracy of the monitoring data, a temperature collection point can be arranged on the side of the hollow cooling screw where the cooling medium flows in to measure the inlet temperature of the cooling medium when it flows into the hollow cooling screw in real time to ensure the accuracy of the monitoring data. At the same time, it is also possible to monitor whether there is a large temperature change when the cooling medium flows out of the cooler and then flows into the hollow cooling screw, so as to monitor whether there is a fault. Of course, whether to monitor the inlet temperature of the cooling medium when it flows into the hollow cooling screw in real time by arranging temperature collection points can be selected in combination with actual conditions, and no specific restrictions are made here.

[0042] It should be noted that the technical solution provided in the embodiment of the present invention is to adjust the flow rate of the cooling medium by monitoring the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw under the premise that the temperature of the cooling medium is consistent (i.e., the inlet temperature of the cooling medium flowing into the hollow cooling screw), so as to control the flow rate of the cooling medium flowing into the hollow cooling screw, thereby achieving precise temperature control.

[0043] Step S204, when the outlet temperature is different from the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain a temperature difference.

[0044] In this embodiment, if it is monitored that the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw are different, the temperature difference between the two temperatures can be determined to provide a data basis for subsequently formulating a strategy to adjust the situation.

[0045] Step S206, using the flow rate prediction model to process the temperature difference to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is trained using multiple sets of training data through machine learning, and each of the multiple sets of training data includes: a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference.

[0046] In this embodiment, the temperature of the hollow cooling screw can be controlled by adjusting the flow rate of the cooling medium. When it is monitored that the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw are different, the temperature difference obtained in the above step S204 can be analyzed and processed using the corresponding flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium.

[0047] Step S208, adjust the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate adjustment strategy so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy.

[0048] In this embodiment, the flow rate of the cooling medium when it flows out of the cooling machine can be adjusted according to the flow rate adjustment strategy obtained in the above step S206 to adjust it to the desired target flow rate, thereby controlling the temperature of the hollow cooling screw and keeping the temperature of the hollow cooling screw as constant as possible, thereby achieving precise temperature control.

[0049] It can be seen from the above that, through the technical solution provided by the above embodiment of the present invention, the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw can be obtained at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; when the outlet temperature is different from the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain the temperature difference; the temperature difference is processed using a flow rate prediction model to obtain a flow rate regulation strategy for regulating the flow rate of the cooling medium, wherein the flow rate prediction model is trained using multiple sets of training data by machine learning, and each of the multiple sets of training data includes: sample temperature difference , a sample flow rate adjustment strategy corresponding to the sample temperature difference; according to the flow rate adjustment strategy, the flow rate of the cooling medium is adjusted from the current flow rate to the target flow rate so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy, thereby achieving the purpose of adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into the hollow cooling screw and flowing out of the screw to control the temperature of the hollow cooling screw, achieving the technical effect of controlling the flow rate of the cooling medium by real-time monitoring of the temperature of the cooling medium to accurately control the temperature of the hollow cooling screw, thereby improving the accuracy of temperature control of the hollow cooling screw.

[0050] Therefore, the technical solution provided by the above-mentioned embodiment of the present invention solves the technical problem in the related art that it is difficult to meet the accuracy requirements when controlling the temperature of the hollow screw by the traditional method due to the sensitivity of the hollow screw to temperature.

[0051] According to the above-mentioned embodiment of the present invention, the temperature difference is processed by using the flow rate prediction model to obtain the flow rate regulation strategy for adjusting the current flow rate of the cooling medium, including: using the flow rate prediction model to process the temperature difference to obtain the flow rate change value for adjusting the current flow rate of the cooling medium; when the outlet temperature is greater than the inlet temperature, the flow rate regulation strategy is determined as: increasing the flow rate change value of the cooling medium on the basis of the current flow rate; when the outlet temperature is less than the inlet temperature, the flow rate regulation strategy is determined as: reducing the flow rate change value of the cooling medium on the basis of the current flow rate.

[0052] Specifically, when it is monitored that the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw are different, the absolute value of the temperature difference between the outlet temperature and the inlet temperature can be determined by calculation; then the flow rate prediction model can be used to analyze and process the absolute value of the temperature difference to obtain the amount that needs to be changed when adjusting the flow rate of the cooling medium (i.e., the flow rate change value). The adjustment here can increase the flow rate change value or decrease the flow rate change value based on the current flow rate of the cooling medium.

[0053] It should be noted that, under normal circumstances, an increase in the heat of the hollow cooling screw itself or an increase in the ambient temperature may cause the temperature of the hollow cooling screw to rise. At this time, the temperature of the cooling medium flowing out of the hollow cooling screw (i.e., the outlet temperature) may be higher than the inlet temperature, and the flow rate of the cooling medium needs to be increased (i.e., increasing the flow rate change value on the basis of the current flow rate of the cooling medium to increase the flow rate), which is equivalent to increasing the flow rate of the cooling medium flowing into the hollow cooling screw in the latter time period, thereby accelerating the cooling of the hollow cooling screw to keep the temperature of the hollow cooling screw as constant as possible.

[0054] Although theoretically speaking, the temperature of the cooling medium at the outlet of the hollow cooling screw should not be lower than the temperature at its inlet, because under normal working conditions, the main function of the cooling medium is to absorb the heat generated by the hollow screw during operation, thereby keeping the temperature of the screw within the ideal range. When the cooling medium passes through the hollow screw, it will exchange heat with the inside of the screw and absorb the heat generated by the screw due to friction, load, etc., so the temperature of the cooling medium at the outlet is usually higher than that at the inlet; however, in some special cases, the cooling medium temperature at the outlet of the hollow cooling screw may be temporarily lower than the inlet temperature. At this time, it is necessary to reduce the flow rate of the cooling medium (that is, reduce the flow rate change value based on the current flow rate of the cooling medium to increase the flow rate), which is equivalent to reducing the flow rate of the cooling medium flowing into the hollow cooling screw in the latter period of time, so as to weaken the cooling capacity of the cooling medium on the hollow cooling screw and keep the temperature of the hollow cooling screw as constant as possible.

[0055] According to the above-mentioned embodiment of the present invention, the constant temperature control method of the hollow cooling screw also includes: determining that the cooling medium flowing out of the hollow cooling screw is the target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; transferring the target cooling medium stored in the collection area to the cooling area according to a predetermined time period, so as to use the cooling area to perform recovery treatment on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; transferring the processed target cooling medium in the cooling area to the constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium at a predetermined temperature.

[0056] Combine the following Figure 3 The above embodiments of the present invention are described in detail. Figure 3 Schematic diagram of temperature control of a single hollow cooling screw according to an embodiment of the present invention. Figure 3 As shown, temperature collection points can be arranged on the left and right sides of the hollow cooling screw, that is, on the side where the cooling medium flows into the hollow cooling screw and on the side where the cooling medium flows out of the hollow cooling screw, respectively, and corresponding temperature collection equipment (such as temperature sensors, inductors, etc.) is used to monitor the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw in real time; the cooling machine also adopts a partition setting, which is specifically divided into: an inlet collection area (i.e. the above-mentioned collection area), a cooling area and an outlet constant temperature area (i.e. the above-mentioned constant temperature area); the outlet constant temperature area is used to store constant temperature cooling medium to ensure that the inlet temperature of the cooling medium flowing into the hollow cooling screw is constant; the cooling area is used to cool the cooling medium pumped to the area, and when it is cooled to a set temperature (i.e. the above-mentioned predetermined temperature), the cooling medium in the area can be pumped to the outlet constant temperature area; the inlet collection area is used to temporarily store the cooling medium flowing out of the hollow cooling screw (which can be understood as cooling return water, i.e. the above-mentioned target cooling medium), mainly to prevent the cooling return water with a higher temperature from suddenly entering the cooling area and affecting the refrigeration of the cooling area.

[0057] It should be noted that the cooling medium flows out from the outlet constant temperature zone of the cooler and flows into the hollow cooling screw. After flowing out through the hollow cooling screw, it flows into the inlet collection area of ​​the cooler for temporary storage. It will then be pumped to the cooling area for cooling, and after it recovers to the set temperature, it will be pumped to the outlet constant temperature zone for storage. Then it will flow out from the outlet constant temperature zone of the cooler and flow into the hollow cooling screw. This cycle is a dynamic cycle process and will not end until the equipment stops. Similarly, the above-mentioned embodiment of the present invention provides a process of adjusting the flow rate of the cooling medium by monitoring the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw to control the flow rate of the cooling medium flowing into the hollow cooling screw, thereby achieving precise temperature control. It is also a dynamic cycle process. During the operation of the equipment, the hollow cooling screw must be continuously temperature controlled until the equipment stops.

[0058] In a specific embodiment of the present invention, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so that the target cooling medium is restored to the predetermined temperature by using the cooling area, including: obtaining the current temperature of the target cooling medium in the cooling area; when the current temperature is greater than the predetermined temperature, controlling the variable frequency cooling device to increase the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to start, so as to restore the target cooling medium and restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to restore the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to restore the target cooling medium; when the current temperature is less than the predetermined temperature, controlling the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to restore the target cooling medium and restore the temperature of the target cooling medium to the predetermined temperature.

[0059] It should be noted that the above-mentioned variable frequency cooling equipment and fixed frequency cooling equipment are both cooling machines. The difference lies in whether the cooling machine uses variable frequency technology for cooling or fixed frequency technology for cooling. The inlet collection area, cooling area and outlet constant temperature area are three different partitions in the cooling machine. Different technologies can be used here to realize cooling return water in the cooling area of ​​the cooler.

[0060] On the one hand, the processing efficiency of the cooling medium in the cooling zone can be adjusted by comparing the temperature of the cooling return water with the preset temperature of the cooling medium. For example, if the temperature of the cooling return water is higher than the preset temperature, it means that the processing efficiency of the cooling medium in the cooling zone needs to be accelerated. The processing efficiency can be accelerated by increasing the frequency of the variable frequency cooling device or starting the fixed frequency cooling device. Conversely, the processing efficiency can be slowed down by reducing the frequency of the variable frequency cooling device, or controlling the fixed frequency cooling device to stop running or reducing the running time, so that the cooling return water can be restored to the set temperature after being processed in the cooling zone.

[0061] It should be noted that, in the case where the temperature of the cooling return water is exactly the same as the preset temperature of the cooling medium, the cooling machine can be controlled to perform normal processing according to the current state.

[0062] In another specific embodiment of the present invention, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so that the target cooling medium is restored to a predetermined temperature by using the cooling area, including: obtaining a first amount of cold liquid of the target cooling medium in the collection area and a second amount of cold liquid of the cooling medium in the constant temperature area; when the first amount of cold liquid is greater than the second amount of cold liquid, controlling the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to restore the target cooling medium in the cooling area to a predetermined temperature; when the first amount of cold liquid is less than the second amount of cold liquid, controlling the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to restore the target cooling medium in the cooling area to a predetermined temperature.

[0063] On the other hand, the processing efficiency of the cooling medium in the cooling zone can be adjusted by comparing the cold night volume of the cooling return water in the inlet collection zone and the cold night volume of the cooling medium in the outlet constant temperature zone. For example, if the cold night volume of the cooling return water in the inlet collection zone is greater than the cold night volume of the cooling medium in the outlet constant temperature zone, it means that the current cooling demand is high, and the processing efficiency can be accelerated by increasing the frequency of the variable frequency cooling device or starting the fixed frequency cooling device. Otherwise, it means that the current cooling demand is low, and the processing efficiency can be slowed down by reducing the frequency of the variable frequency cooling device, or controlling the fixed frequency cooling device to stop running or reducing the running time, so that the cooling return water can be restored to the set temperature after treatment in the cooling zone.

[0064] It should be noted that, when the cooling night amount of the cooling return water in the inlet collection area and the cooling night amount of the cooling medium in the outlet constant temperature area are exactly the same, the cooling machine can be controlled to process normally according to the current state.

[0065] In addition, in the process of using fixed frequency technology or variable frequency technology to utilize the cooling zone to recover the target cooling medium, it is necessary to comprehensively consider multiple factors to adjust the frequency or start and stop of the cooler, rather than simply considering a single factor to control it.

[0066] According to the above embodiment of the present invention, the constant temperature control method of the hollow cooling screw also includes: controlling the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

[0067] In this embodiment, a flow rate regulator can be set in the outlet constant temperature zone so that the flow rate regulator can adjust the flow rate of the cooling medium flowing out of the outlet constant temperature zone according to the flow rate adjustment strategy, so that the cooling medium can flow into the hollow cooling screw at the desired target flow rate.

[0068] According to the above-mentioned embodiment of the present invention, the constant temperature control method of the hollow cooling screw also includes: when using multiple hollow cooling screws in parallel for constant temperature control, different flow rate regulators are used to control the flow rate of the cooling medium flowing into each hollow cooling screw, so that the outlet temperature and inlet temperature of each hollow cooling screw are the same.

[0069] Combine the following Figure 4 The above embodiments of the present invention are described in detail. Figure 4 is a schematic diagram of temperature control of multiple hollow cooling screw rods according to an embodiment of the present invention, such as Figure 4 As shown, when one cooling machine is used to control the temperature of multiple cooling points (i.e., hollow cooling screws), multiple flow rate regulators can be set in the outlet constant temperature zone, and each flow rate regulator individually adjusts the flow rate of the cooling medium flowing into a certain hollow cooling screw. In this way, the problem of uneven cooling capacity of multi-channel temperature control of traditional water coolers is solved by individually adjusting each flow rate.

[0070] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0071] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0072] According to an embodiment of the present invention, a thermostatic control device for a hollow cooling screw rod is provided for implementing the thermostatic control method for the hollow cooling screw rod. Figure 5Schematic diagram of a thermostatic control device for a hollow cooling screw according to an embodiment of the present invention. Figure 5 As shown, the device comprises: a first acquisition unit 51, a second acquisition unit 53, a third acquisition unit 55 and an adjustment unit 57. The constant temperature control device of the hollow cooling screw rod is described in detail below.

[0073] The first acquisition unit 51 is used to acquire the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw.

[0074] The second acquisition unit 53 is used to calculate the difference between the outlet temperature and the inlet temperature to obtain the temperature difference when the outlet temperature is different from the inlet temperature.

[0075] The third acquisition unit 55 is used to process the temperature difference using the flow rate prediction model to obtain a flow rate regulation strategy for regulating the flow rate of the cooling medium, wherein the flow rate prediction model is trained using multiple sets of training data through machine learning, and each set of the multiple sets of training data includes: a sample temperature difference and a sample flow rate regulation strategy corresponding to the sample temperature difference.

[0076] The regulating unit 57 is used to regulate the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate regulation strategy so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after regulating the current flow rate of the cooling medium according to the flow rate regulation strategy.

[0077] It should be noted here that the above-mentioned first acquisition unit 51, second acquisition unit 53, third acquisition unit 55 and adjustment unit 57 correspond to steps S202 to S208 in the above-mentioned embodiments, and the four units and the corresponding steps have the same instances and application scenarios, but are not limited to the contents disclosed in the above-mentioned embodiments.

[0078] From the above, it can be seen that in the scheme recorded in the above-mentioned embodiment of the present invention, the first acquisition unit can be used to obtain the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; then, the second acquisition unit is used to calculate the difference between the outlet temperature and the inlet temperature when the outlet temperature is different from the inlet temperature, so as to obtain the temperature difference; then, the third acquisition unit is used to process the temperature difference using the flow rate prediction model, so as to obtain a flow rate regulation strategy for regulating the flow rate of the cooling medium, wherein the flow rate prediction model is trained by machine learning using multiple sets of training data, and each set of the multiple sets of training data includes The invention discloses a method for controlling the temperature of the hollow cooling screw by adjusting the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate adjustment strategy, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy. The method achieves the purpose of controlling the temperature of the hollow cooling screw by adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into the hollow cooling screw and flowing out of the screw, and realizes the technical effect of controlling the flow rate of the cooling medium by real-time monitoring the temperature of the cooling medium to accurately control the temperature of the hollow cooling screw, thereby improving the accuracy of temperature control of the hollow cooling screw.

[0079] Therefore, the technical solution provided by the above-mentioned embodiment of the present invention solves the technical problem in the related art that it is difficult to meet the accuracy requirements when controlling the temperature of the hollow screw by the traditional method due to the sensitivity of the hollow screw to temperature.

[0080] In an optional embodiment, the third acquisition unit includes: a first acquisition module, which is used to process the temperature difference using a flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; a first determination module, which is used to determine the flow rate adjustment strategy when the outlet temperature is greater than the inlet temperature: increasing the flow rate change value based on the current flow rate of the cooling medium; and a second determination module, which is used to determine the flow rate adjustment strategy when the outlet temperature is lower than the inlet temperature: reducing the flow rate change value based on the current flow rate of the cooling medium.

[0081] In an optional embodiment, the constant temperature control device of the hollow cooling screw further includes: a determination unit, used to determine that the cooling medium flowing out of the hollow cooling screw is the target cooling medium; a first storage unit, used to store the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; a processing unit, used to transfer the target cooling medium stored in the collection area to the cooling area according to a predetermined time period, so as to use the cooling area to perform recovery treatment on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; a second storage unit, used to transfer the processed target cooling medium in the cooling area to the constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium at a predetermined temperature.

[0082] In an optional embodiment, the processing unit includes: a second acquisition module, used to acquire the current temperature of the target cooling medium in the cooling zone; a first control module, used to control the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to start, so as to recover the target cooling medium so that the temperature of the target cooling medium is restored to the predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to recover the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to recover the target cooling medium; the second control module is used to control the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to stop running or reduce the running time, so as to recover the target cooling medium so that the temperature of the target cooling medium is restored to the predetermined temperature, when the current temperature is lower than the predetermined temperature.

[0083] In an optional embodiment, the processing unit includes: a third acquisition module, which is used to obtain a first amount of cold liquid in the target cooling medium in the collection area and a second amount of cold liquid in the cooling medium in the constant temperature area; a third control module, which is used to control the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to start, so as to recover the target cooling medium in the cooling zone and restore the temperature of the target cooling medium to a predetermined temperature when the first amount of cold liquid is greater than the second amount of cold liquid; a fourth control module, which is used to control the variable frequency cooling device to reduce a predetermined frequency based on the current frequency, or to control the fixed frequency cooling device to stop running or reduce the running time, so as to recover the target cooling medium in the cooling zone and restore the temperature of the target cooling medium to a predetermined temperature when the first amount of cold liquid is less than the second amount of cold liquid.

[0084] In an optional embodiment, the constant temperature control device of the hollow cooling screw also includes: a first control unit, used to control the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate regulation strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

[0085] In an optional embodiment, the constant temperature control device of the hollow cooling screw also includes: a second control unit, which is used to control the flow rate of the cooling medium flowing into each hollow cooling screw using different flow rate regulators when using multiple hollow cooling screws in parallel for constant temperature control, so that the outlet temperature and inlet temperature of each hollow cooling screw are the same.

[0086] According to another aspect of an embodiment of the present invention, a constant temperature control system for a hollow cooling screw is further provided. The constant temperature control system for the hollow cooling screw uses any of the above-mentioned constant temperature control methods for the hollow cooling screw.

[0087] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, the computer-readable storage medium comprising a stored program, wherein the program executes any one of the above-mentioned constant temperature control methods for a hollow cooling screw.

[0088] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the communication devices in a communication device group.

[0089] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: obtaining the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; when the outlet temperature is different from the inlet temperature, calculating the difference between the outlet temperature and the inlet temperature to obtain the temperature difference; processing the temperature difference using a flow rate prediction model to obtain a flow rate regulation strategy for regulating the flow rate of the cooling medium, wherein the flow rate prediction model is trained using multiple sets of training data by machine learning, and each set of the multiple sets of training data includes: a sample temperature difference, and a sample flow rate regulation strategy corresponding to the sample temperature difference; adjusting the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate regulation strategy so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate regulation strategy.

[0090] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: processing the temperature difference using a flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; when the outlet temperature is greater than the inlet temperature, determining the flow rate adjustment strategy as: increasing the flow rate change value of the cooling medium on the basis of the current flow rate; when the outlet temperature is less than the inlet temperature, determining the flow rate adjustment strategy as: reducing the flow rate change value of the cooling medium on the basis of the current flow rate.

[0091] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for performing the following steps: determining that the cooling medium flowing out of the hollow cooling screw is the target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; transferring the target cooling medium stored in the collection area to the cooling area according to a predetermined time period, so as to use the cooling area to perform recovery treatment on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; transferring the processed target cooling medium in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store cooling medium at a predetermined temperature.

[0092] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: obtaining the current temperature of the target cooling medium in the cooling zone; when the current temperature is greater than a predetermined temperature, controlling the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to perform recovery processing on the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to perform recovery processing on the target cooling medium; when the current temperature is less than a predetermined temperature, controlling the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to perform recovery processing on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature.

[0093] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: obtaining a first amount of cold liquid of the target cooling medium in the collection area and a second amount of cold liquid of the cooling medium in the constant temperature area; when the first amount of cold liquid is greater than the second amount of cold liquid, controlling the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling area so that the temperature of the target cooling medium is restored to a predetermined temperature; when the first amount of cold liquid is less than the second amount of cold liquid, controlling the variable frequency cooling device to reduce a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to perform recovery processing on the target cooling medium in the cooling area so that the temperature of the target cooling medium is restored to a predetermined temperature.

[0094] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for performing the following steps: controlling the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate regulation strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

[0095] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for performing the following steps: when using multiple parallel hollow cooling screws for constant temperature control, different flow rate regulators are used to control the flow rate of the cooling medium flowing into each hollow cooling screw so that the outlet temperature and inlet temperature of each hollow cooling screw are the same.

[0096] According to another aspect of an embodiment of the present invention, a processor is further provided, and the processor is used to run a program, wherein when the program is run, any one of the above-mentioned constant temperature control methods for a hollow cooling screw is executed.

[0097] According to another aspect of an embodiment of the present invention, a computer program product is further provided, comprising computer instructions, and when the computer instructions are executed by a processor, any one of the above-mentioned constant temperature control methods for a hollow cooling screw is executed.

[0098] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0099] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0101] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0102] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0103] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0104] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling the constant temperature of a hollow cooling screw, characterized in that: include: Acquire the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw at predetermined time intervals, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; When the outlet temperature is different from the inlet temperature, calculating the difference between the outlet temperature and the inlet temperature to obtain a temperature difference; The temperature difference is processed by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is trained by using multiple sets of training data through machine learning, and each of the multiple sets of training data includes: a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; According to the flow rate regulation strategy, the flow rate of the cooling medium is adjusted from the current flow rate to the target flow rate so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after adjusting the current flow rate of the cooling medium according to the flow rate regulation strategy.

2. The constant temperature control method for a hollow cooling screw according to claim 1, characterized in that: The temperature difference is processed by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the current flow rate of the cooling medium, including: Processing the temperature difference using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; In the case where the outlet temperature is greater than the inlet temperature, determining the flow rate adjustment strategy is: increasing the flow rate change value on the basis of the current flow rate of the cooling medium; In the case where the outlet temperature is lower than the inlet temperature, the flow rate adjustment strategy is determined as: reducing the flow rate of the cooling medium by the flow rate change value based on the current flow rate.

3. The constant temperature control method for a hollow cooling screw according to claim 1, characterized in that: Also includes: Determining the cooling medium flowing out of the hollow cooling screw as a target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period when the cooling medium flows out of the hollow cooling screw; Transferring the target cooling medium stored in the collection area to the cooling area according to a predetermined time period, so as to use the cooling area to perform a recovery process on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature; The target cooling medium that has been processed in the cooling zone is transferred to a constant temperature zone for storage, wherein the constant temperature zone is used to store the cooling medium at the predetermined temperature.

4. The constant temperature control method for a hollow cooling screw according to claim 3, characterized in that: The target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so as to use the cooling area to perform a recovery process on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature, including: Acquiring a current temperature of the target cooling medium in the cooling zone; In the case where the current temperature is greater than the predetermined temperature, the variable frequency cooling device is controlled to increase the predetermined frequency based on the current frequency, or the fixed frequency cooling device is controlled to start, so as to perform recovery processing on the target cooling medium so that the temperature of the target cooling medium is restored to the predetermined temperature, wherein the variable frequency cooling device is a device that uses variable frequency technology to perform recovery processing on the target cooling medium, and the fixed frequency cooling device is a device that uses fixed frequency technology to perform recovery processing on the target cooling medium; When the current temperature is lower than the predetermined temperature, the variable frequency cooling device is controlled to reduce the predetermined frequency based on the current frequency, or the fixed frequency cooling device is controlled to stop running or reduce the running time, so as to recover the target cooling medium and restore the temperature of the target cooling medium to the predetermined temperature.

5. The constant temperature control method for a hollow cooling screw according to claim 3, characterized in that: The target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so as to use the cooling area to perform a recovery process on the target cooling medium so that the temperature of the target cooling medium is restored to a predetermined temperature, including: Acquire a first cold liquid amount of the target cooling medium in the collection area and a second cold liquid amount of the cooling medium in the constant temperature area; When the first cooling liquid amount is greater than the second cooling liquid amount, controlling the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling zone so that the temperature of the target cooling medium is restored to the predetermined temperature; When the first amount of cold liquid is less than the second amount of cold liquid, the variable frequency cooling device is controlled to reduce the predetermined frequency based on the current frequency, or the fixed frequency cooling device is controlled to stop running or reduce the running time, so as to recover the target cooling medium in the cooling zone and restore the temperature of the target cooling medium to the predetermined temperature.

6. The constant temperature control method for a hollow cooling screw according to claim 3, characterized in that: Also includes: The flow rate regulator is controlled to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature zone flows into the hollow cooling screw at the target flow rate.

7. The constant temperature control method for a hollow cooling screw according to claim 1, characterized in that: Also includes: When multiple hollow cooling screws connected in parallel are used for constant temperature control, different flow rate regulators are used to control the flow rate of the cooling medium flowing into each hollow cooling screw so that the outlet temperature and the inlet temperature of each hollow cooling screw are the same.

8. A constant temperature control device for a hollow cooling screw, characterized in that: include: A first acquisition unit is used to acquire an inlet temperature and an outlet temperature of a cooling medium flowing through the hollow cooling screw at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when it flows into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when it flows out of the hollow cooling screw; A second acquisition unit is used to calculate the difference between the outlet temperature and the inlet temperature to obtain a temperature difference when the outlet temperature is different from the inlet temperature; A third acquisition unit is used to process the temperature difference using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is trained by machine learning using multiple sets of training data, and each of the multiple sets of training data includes: a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; A regulating unit is used to regulate the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate regulation strategy so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium when it currently flows through the hollow cooling screw, and the target flow rate is the flow rate obtained after regulating the current flow rate of the cooling medium according to the flow rate regulation strategy.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the constant temperature control method for the hollow cooling screw according to any one of claims 1 to 7.

10. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by the processor, the constant temperature control method for the hollow cooling screw rod according to any one of claims 1 to 7 is executed.

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