Massive concrete temperature control system and method

Abstract

The application discloses a mass concrete temperature control system and method, comprising a plurality of cooling water pipes, a plurality of pre-buried temperature sensors, a plurality of outlet water temperature sensors, an external temperature sensor, and a control unit configured to input a first temperature, a second temperature and a third temperature into a temperature control model and control the water flow of each cooling water pipe according to the output result of the temperature control model. The mass concrete temperature control system and method effectively improve the heat dissipation efficiency of the mass concrete, ensure the temperature balance of the mass concrete, reduce the temperature difference in the mass concrete, and in turn reduce the probability of temperature cracks, and improve the construction and maintenance quality of the mass concrete.

Description

Technical Field

[0001] This invention relates to automatic temperature control technology for concrete, specifically to a temperature control system and method for large-volume concrete. Background Technology

[0002] The "Code for Construction of Mass Concrete (GB50496-2009)" defines mass concrete as follows: large-volume concrete structures with a minimum geometric dimension of not less than 1 meter, or concrete expected to develop harmful cracks due to temperature changes and shrinkage caused by the hydration of cementitious materials. Mass concrete structures have large cross-sectional dimensions, typically being extra-long, extra-wide, and extra-thick. Due to their massive volume, cement releases a large amount of heat of hydration during the hydration process. Concrete itself has poor thermal conductivity, making it difficult for this accumulated heat to dissipate, resulting in a very high internal temperature. At this point, the concrete's elastic modulus is not high, and creep is significant; the temperature rise primarily causes compressive stress. As the temperature decreases over time, the concrete's elastic modulus becomes relatively large, while creep remains relatively small. When the internal temperature of the concrete differs significantly from the external temperature (i.e., a steep temperature gradient), the internal and external constraints create substantial temperature stress in the mass concrete, easily leading to cracking. Summary of the Invention

[0003] In order to at least overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide.

[0004] In a first aspect, embodiments of this application provide a temperature control system for large-volume concrete, including:

[0005] Multiple cooling water pipes are installed inside a large volume of concrete;

[0006] Multiple pre-embedded temperature sensors are configured inside the large-volume concrete and detect the internal temperature of the large-volume concrete as a first temperature; the positions of the pre-embedded temperature sensors correspond to the cooling water pipes.

[0007] Multiple outlet water temperature sensors are configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and outlet water, and detect the temperature of the outlet water end of the cooling water pipe as a second temperature.

[0008] An external temperature sensor is configured in the external environment and detects the temperature of the external environment as a third temperature.

[0009] The control unit is configured to input the first temperature, the second temperature, and the third temperature into a temperature control model, and control the water flow rate of each of the cooling water pipes according to the output of the temperature control model.

[0010] In existing technologies, embedding cooling water pipes is a common method for temperature control of large-volume concrete to ensure project quality and accelerate construction progress. However, different construction conditions, air temperature conditions, and different materials of cooling water pipes can all affect the effect on reducing the internal temperature of large-volume concrete. Furthermore, parameters such as the flow rate of the cooling water pipes are rarely precisely controlled. This can lead to uneven temperature distribution inside the large-volume concrete during the cooling process, causing thermal stress and cracks, thus reducing the construction and curing quality of the large-volume concrete.

[0011] In this embodiment, multiple temperatures are monitored by temperature sensors located at different positions. The pre-embedded temperature sensors are embedded in the large-volume concrete, corresponding to the positions of the cooling water pipes. The outlet water temperature sensor detects the outlet water temperature of the cooling water pipes. The external temperature sensor detects the external air or water temperature. A pre-set temperature control model integrates the three temperature data to control the water flow rate of each cooling water pipe, effectively ensuring temperature uniformity within the large-volume concrete. This embodiment, by detecting temperatures at multiple locations and independently controlling the temperature of each cooling water pipe, effectively improves the heat dissipation efficiency of the large-volume concrete, ensures temperature uniformity, reduces internal temperature differences, lowers the probability of temperature cracks, and improves the construction and curing quality of the large-volume concrete.

[0012] In one possible implementation, the plurality of cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge.

[0013] The temperature control model is configured as follows:

[0014] The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature.

[0015] Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature.

[0016] The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value;

[0017] The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value;

[0018] The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group;

[0019] The flow rate adjustment value of each cooling water pipe is used as the output of the model.

[0020] In one possible implementation, the temperature control model is further configured as follows:

[0021] The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

[0022] In one possible implementation, the temperature control model is further configured as follows:

[0023] The first difference value and the second difference value are weighted and summed to generate traffic reference data;

[0024] The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

[0025] In one possible implementation, the temperature control model is further configured as follows:

[0026] The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete.

[0027] The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

[0028] Secondly, embodiments of this application provide a method for temperature control of mass concrete, including:

[0029] The internal temperature of the large-volume concrete is detected by multiple temperature sensors embedded inside the concrete as a first temperature; the position of the embedded temperature sensors corresponds to the cooling water pipe.

[0030] The temperature of the outlet end of the cooling water pipe is detected by multiple outlet temperature sensors configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and discharge water, and is used as a second temperature.

[0031] The temperature of the external environment is detected by an external temperature sensor configured in the external environment and used as a third temperature.

[0032] The first temperature, the second temperature, and the third temperature are input into the temperature control model, and the water flow rate of each cooling water pipe is controlled according to the output of the temperature control model.

[0033] In one possible implementation, the plurality of cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge.

[0034] Inputting the first temperature, the second temperature, and the third temperature into the temperature control model, and controlling the water flow rate of each cooling water pipe according to the output of the temperature control model includes:

[0035] The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature.

[0036] Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature.

[0037] The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value;

[0038] The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value;

[0039] The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group;

[0040] The flow rate adjustment value of each cooling water pipe is used as the output of the model.

[0041] In one possible implementation, calculating the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach as the first expected temperature based on the third temperature, and calculating the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach as the second expected temperature includes:

[0042] The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

[0043] In one possible implementation, calculating the flow adjustment value of the reference water pipe as the reference adjustment value based on the first difference value and the second difference value includes:

[0044] The first difference value and the second difference value are weighted and summed to generate traffic reference data;

[0045] The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

[0046] In one possible implementation, calculating the flow rate adjustment value of the cooling water pipe based on the baseline adjustment value and the gradient corresponding to the cooling water pipes in the same group includes:

[0047] The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete.

[0048] The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

[0049] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0050] The present invention relates to a temperature control system and method for large-volume concrete. By detecting the temperature at multiple locations and independently controlling the temperature of each cooling water pipe, the heat dissipation efficiency of large-volume concrete is effectively improved. At the same time, the temperature of large-volume concrete is kept uniform, reducing the temperature difference inside the large-volume concrete, thereby reducing the probability of temperature cracks and improving the construction and maintenance quality of large-volume concrete. Attached Figure Description

[0051] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0052] Figure 1 This is a schematic diagram of the system architecture of an embodiment of this application;

[0053] Figure 2 This is a schematic diagram of the method steps in an embodiment of this application;

[0054] Figure 3 This is a schematic diagram illustrating a specific implementation scheme of an embodiment of this application. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0056] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0057] For a clearer explanation of the above-mentioned temperature control system for large-volume concrete, please refer to the references. Figure 1 The present invention provides a schematic diagram of the communication architecture of the temperature control system for large-volume concrete disclosed in the embodiments of the present invention.

[0058] This includes:

[0059] Multiple cooling water pipes are installed inside a large volume of concrete;

[0060] Multiple pre-embedded temperature sensors are configured inside the large-volume concrete and detect the internal temperature of the large-volume concrete as a first temperature; the positions of the pre-embedded temperature sensors correspond to the cooling water pipes.

[0061] Multiple outlet water temperature sensors are configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and outlet water, and detect the temperature of the outlet water end of the cooling water pipe as a second temperature.

[0062] An external temperature sensor is configured in the external environment and detects the temperature of the external environment as a third temperature.

[0063] The control unit is configured to input the first temperature, the second temperature, and the third temperature into a temperature control model, and control the water flow rate of each of the cooling water pipes according to the output of the temperature control model.

[0064] In existing technologies, embedding cooling water pipes is a common method for temperature control of large-volume concrete to ensure project quality and accelerate construction progress. However, different construction conditions, air temperature conditions, and different materials of cooling water pipes can all affect the effect on reducing the internal temperature of large-volume concrete. Furthermore, parameters such as the flow rate of the cooling water pipes are rarely precisely controlled. This can lead to uneven temperature distribution inside the large-volume concrete during the cooling process, causing thermal stress and cracks, thus reducing the construction and curing quality of the large-volume concrete.

[0065] In this embodiment, multiple temperatures are monitored by temperature sensors located at different positions. The pre-embedded temperature sensors are embedded in the large-volume concrete, corresponding to the positions of the cooling water pipes. The outlet water temperature sensor detects the outlet water temperature of the cooling water pipes. The external temperature sensor detects the external air or water temperature. A pre-set temperature control model integrates the three temperature data to control the water flow rate of each cooling water pipe, effectively ensuring temperature uniformity within the large-volume concrete. This embodiment, by detecting temperatures at multiple locations and independently controlling the temperature of each cooling water pipe, effectively improves the heat dissipation efficiency of the large-volume concrete, ensures temperature uniformity, reduces internal temperature differences, lowers the probability of temperature cracks, and improves the construction and curing quality of the large-volume concrete.

[0066] In one possible implementation, the plurality of cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge.

[0067] The temperature control model is configured as follows:

[0068] The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature.

[0069] Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature.

[0070] The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value;

[0071] The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value;

[0072] The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group;

[0073] The flow rate adjustment value of each cooling water pipe is used as the output of the model.

[0074] In the implementation of this application embodiment, to facilitate individual control of each cooling water pipe, the cooling water pipes are divided into multiple groups, and each group is controlled independently. The cooling water pipes in each group are arranged along the same gradient, meaning that the cooling water pipes in the same group are arranged at equal arithmetic distances from the center of the large-volume concrete. Preferably, each group of cooling water pipes is located in the same plane; more preferably, the plane containing each group of cooling water pipes passes through the center of the large-volume concrete. For example, one group of cooling water pipes includes three pipes: the first cooling water pipe is 20cm from the center of the large-volume concrete, the second is 40cm, and the third is 60cm. This method minimizes the influence of each cooling water pipe in each group on the temperature field, thereby improving temperature control efficiency.

[0075] To control the cooling water pipes in the same group, the pipe with the highest temperature is selected as the benchmark for control. This pipe, being closest to the center of the large-volume concrete, typically requires the largest adjustment range in water flow and the most timely control. Therefore, using this pipe as the benchmark maximizes the uniformity of the internal temperature of the large-volume concrete. During temperature control, the third temperature is the external ambient temperature. Based on this temperature, we can roughly calculate the desired temperature reduction level of the large-volume concrete at the benchmark pipe (the first desired temperature) and the outlet water temperature of the benchmark pipe when the large-volume concrete reaches the first desired temperature (the second desired temperature).

[0076] By comparing the calculated desired temperature with the collected reference temperature, the appropriate adjustment to the water flow in the reference water pipe can be determined. In this embodiment, the first difference value represents how much the internal temperature of the large-volume concrete needs to be reduced, while the second difference value represents whether the cooling rate meets the requirements, i.e., whether significant temperature fluctuations will occur subsequently. The flow adjustment value of the reference water pipe can be calculated using the first and second difference values. It should be understood that in this embodiment, the internal temperature of the large-volume concrete will initially be higher than expected, so the first difference value is the first reference temperature minus the first desired temperature, and the second difference value is the second reference temperature minus the second desired temperature; both are positive values. After obtaining the reference adjustment value, the required flow rate of the cooling water pipes in the same group can be calculated according to the corresponding gradient, thereby completing the corresponding flow control. The calculation according to the corresponding gradient can be performed using linear interpolation or gradient weighting.

[0077] In one possible implementation, the temperature control model is further configured as follows:

[0078] The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

[0079] When implementing the embodiments of this application, the desired temperature can be determined according to the relevant concrete curing specifications, such as the "Technical Specification for Temperature Measurement and Control of Mass Concrete" in GB / T51028-2015, which stipulates that "the temperature difference between the inlet water and the high temperature of the concrete should be controlled by adjusting the inlet water flow rate and water temperature, and the temperature difference should be 15℃~25℃; the temperature difference between the outlet water and the inlet water should be 3℃~6℃; the cooling rate should not be greater than 2℃ / d, and should not be greater than 1℃ / 4h."

[0080] In one possible implementation, the temperature control model is further configured as follows:

[0081] The first difference value and the second difference value are weighted and summed to generate traffic reference data;

[0082] The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

[0083] In the implementation of this application embodiment, as described in the above embodiment, the first difference value and the second difference value can be used as the main basis for flow adjustment. In order to simplify the calculation, the first difference value and the second difference value can be processed by linear weighting, and then the flow adjustment value can be calculated by the flow-temperature difference function. The flow-temperature difference function can be obtained based on thermodynamic calculations, and this application embodiment will not be repeated.

[0084] In one possible implementation, the temperature control model is further configured as follows:

[0085] The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete.

[0086] The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

[0087] In the implementation of this application embodiment, since the required flow rate and adjustment range generally decrease with increasing distance from the center of the large-volume concrete, a gradient is used to calculate the adjustment coefficient. For example, a set of cooling water pipes includes three pipes: the first pipe is 20cm from the center of the large-volume concrete, the second pipe is 40cm, and the third pipe is 60cm. Using the first pipe as the reference pipe, the adjustment coefficient for the second pipe is 0.5, and the adjustment coefficient for the third pipe is 0.33.

[0088] Please see Figure 3 This illustrates a more specific implementation of an embodiment of this application, in which the outlet water temperature sensor, the pre-embedded temperature sensor, and the external temperature sensor are all connected to the control unit and send corresponding temperature data. The control unit calculates the flow rate change, and the frequency converter box controls the water pumps corresponding to different cooling water pipes to achieve automatic control of cooling of large-volume concrete.

[0089] Based on the above, please refer to the following: Figure 2 This is a schematic flowchart of a method for controlling the temperature of large-volume concrete provided in an embodiment of the present invention. This method can be applied to... Figure 1 The temperature control system for large-volume concrete, further, the temperature control method for large-volume concrete may specifically include the contents described in steps S1-S4.

[0090] S1: The internal temperature of the large-volume concrete is detected by multiple pre-embedded temperature sensors configured inside the large-volume concrete as a first temperature; the position of the pre-embedded temperature sensors corresponds to the cooling water pipe.

[0091] S2: The temperature of the outlet end of the cooling water pipe is detected by multiple outlet water temperature sensors configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and discharge water, as a second temperature.

[0092] S3: The temperature of the external environment is detected by an external temperature sensor configured in the external environment as a third temperature;

[0093] S4: Input the first temperature, the second temperature and the third temperature into the temperature control model, and control the water flow rate of each cooling water pipe according to the output result of the temperature control model.

[0094] In one possible implementation, the plurality of cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge.

[0095] Inputting the first temperature, the second temperature, and the third temperature into the temperature control model, and controlling the water flow rate of each cooling water pipe according to the output of the temperature control model includes:

[0096] The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature.

[0097] Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature.

[0098] The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value;

[0099] The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value;

[0100] The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group;

[0101] The flow rate adjustment value of each cooling water pipe is used as the output of the model.

[0102] In one possible implementation, calculating the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach as the first expected temperature based on the third temperature, and calculating the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach as the second expected temperature includes:

[0103] The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

[0104] In one possible implementation, calculating the flow adjustment value of the reference water pipe as the reference adjustment value based on the first difference value and the second difference value includes:

[0105] The first difference value and the second difference value are weighted and summed to generate traffic reference data;

[0106] The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

[0107] In one possible implementation, calculating the flow rate adjustment value of the cooling water pipe based on the baseline adjustment value and the gradient corresponding to the cooling water pipes in the same group includes:

[0108] The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete.

[0109] The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

[0110] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0111] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, or may be electrical, mechanical or other forms of connection.

[0112] The units described as separate components may or may not be physically separate. As will be apparent to those skilled in the art, the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0113] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0114] If the integrated unit is implemented as 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or grid device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0115] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A temperature control system for large-volume concrete, characterized in that, include: Multiple cooling water pipes are installed inside a large volume of concrete; Multiple pre-embedded temperature sensors are configured inside the large-volume concrete and detect the internal temperature of the large-volume concrete as a first temperature; the positions of the pre-embedded temperature sensors correspond to the cooling water pipes. Multiple outlet water temperature sensors are configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and outlet water, and detect the temperature of the outlet water end of the cooling water pipe as a second temperature. An external temperature sensor is configured in the external environment and detects the temperature of the external environment as a third temperature. The control unit is configured to input the first temperature, the second temperature and the third temperature into a temperature control model, and control the water flow rate of each of the cooling water pipes according to the output of the temperature control model. The cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge. The temperature control model is configured as follows: The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature. Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature. The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value; The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value; The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group; The flow rate adjustment value of each cooling water pipe is used as the output of the model.

2. The temperature control system for large-volume concrete according to claim 1, characterized in that, The temperature control model is also configured as follows: The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

3. The temperature control system for large-volume concrete according to claim 1, characterized in that, The temperature control model is also configured as follows: The first difference value and the second difference value are weighted and summed to generate traffic reference data; The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

4. The temperature control system for large-volume concrete according to claim 1, characterized in that, The temperature control model is also configured as follows: The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete. The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

5. A method for controlling the temperature of large-volume concrete using the system described in any one of claims 1 to 4, characterized in that, include: The internal temperature of the large-volume concrete is detected by multiple temperature sensors embedded inside the concrete as a first temperature; the position of the embedded temperature sensors corresponds to the cooling water pipe. The temperature of the outlet end of the cooling water pipe is detected by multiple outlet temperature sensors configured at the corresponding ends of the cooling water pipes that extend from the large volume concrete and discharge water, and is used as a second temperature. The temperature of the external environment is detected by an external temperature sensor configured in the external environment and used as a third temperature. The first temperature, the second temperature, and the third temperature are input into the temperature control model, and the water flow rate of each cooling water pipe is controlled according to the output of the temperature control model.

6. The method for temperature control of large-volume concrete according to claim 5, characterized in that, The cooling water pipes are divided into multiple groups, and each group of cooling water pipes is arranged along the same gradient inside the large volume concrete; the gradient is the distance gradient from the center inside the large volume concrete to the outer edge. Inputting the first temperature, the second temperature, and the third temperature into the temperature control model, and controlling the water flow rate of each cooling water pipe according to the output of the temperature control model includes: The cooling water pipe closest to the center of the large-volume concrete in the same group is taken as the reference water pipe, and the first temperature of the reference water pipe is taken as the first reference temperature, and the second temperature of the reference water pipe is taken as the second reference temperature. Based on the third temperature, the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach is calculated as the first expected temperature, and the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is calculated as the second expected temperature. The difference between the first desired temperature and the first reference temperature is taken as the first difference value, and the difference between the second desired temperature and the second reference temperature is taken as the second difference value; The flow adjustment value of the reference water pipe is calculated based on the first difference value and the second difference value and used as the reference adjustment value; The flow rate adjustment value of the cooling water pipe is calculated based on the baseline adjustment value and the gradient corresponding to the cooling water pipe in the same group; The flow rate adjustment value of each cooling water pipe is used as the output of the model.

7. The method for temperature control of large-volume concrete according to claim 6, characterized in that, The calculation of the expected temperature that the pre-embedded temperature sensor corresponding to the reference water pipe should reach, based on the third temperature, is taken as the first expected temperature, and the calculation of the expected temperature that the outlet water temperature sensor corresponding to the reference water pipe should reach is taken as the second expected temperature includes: The first desired temperature is calculated by superimposing the third temperature on the first temperature rise data, and the second desired temperature is calculated by superimposing the third temperature on the second temperature rise data; both the first temperature rise data and the second temperature rise data are obtained according to concrete curing standards.

8. The method for temperature control of large-volume concrete according to claim 6, characterized in that, The calculation of the flow adjustment value of the reference water pipe as the reference adjustment value based on the first difference value and the second difference value includes: The first difference value and the second difference value are weighted and summed to generate traffic reference data; The flow rate reference data is input into the flow rate temperature difference function to generate the flow rate adjustment value of the reference water pipe; the flow rate temperature difference function is a nonlinear monotonically increasing function with the temperature difference value as the independent variable and the flow rate adjustment value as the dependent variable.

9. The method for temperature control of large-volume concrete according to claim 6, characterized in that, The flow rate adjustment value of the cooling water pipe is calculated based on the aforementioned benchmark adjustment value and the gradient corresponding to the cooling water pipes in the same group, including: The adjustment coefficient is calculated based on the gradient corresponding to the cooling water pipe; the adjustment coefficient is the ratio of the reference distance to the distance from the cooling water pipe to the center of the interior of the large-volume concrete; the reference distance is the distance from the reference water pipe to the center of the interior of the large-volume concrete. The product of the adjustment coefficient and the benchmark adjustment value is used as the flow adjustment value for the corresponding cooling water pipe.

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